forked from OSchip/llvm-project
6930 lines
251 KiB
C++
6930 lines
251 KiB
C++
//===--- ParseDecl.cpp - Declaration Parsing --------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the Declaration portions of the Parser interfaces.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Parse/Parser.h"
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#include "clang/Parse/RAIIObjectsForParser.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/DeclTemplate.h"
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#include "clang/AST/PrettyDeclStackTrace.h"
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#include "clang/Basic/AddressSpaces.h"
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#include "clang/Basic/Attributes.h"
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#include "clang/Basic/CharInfo.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Parse/ParseDiagnostic.h"
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#include "clang/Sema/Lookup.h"
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#include "clang/Sema/ParsedTemplate.h"
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#include "clang/Sema/Scope.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SmallSet.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringSwitch.h"
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using namespace clang;
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//===----------------------------------------------------------------------===//
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// C99 6.7: Declarations.
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//===----------------------------------------------------------------------===//
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/// ParseTypeName
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/// type-name: [C99 6.7.6]
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/// specifier-qualifier-list abstract-declarator[opt]
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///
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/// Called type-id in C++.
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TypeResult Parser::ParseTypeName(SourceRange *Range,
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DeclaratorContext Context,
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AccessSpecifier AS,
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Decl **OwnedType,
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ParsedAttributes *Attrs) {
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DeclSpecContext DSC = getDeclSpecContextFromDeclaratorContext(Context);
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if (DSC == DeclSpecContext::DSC_normal)
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DSC = DeclSpecContext::DSC_type_specifier;
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// Parse the common declaration-specifiers piece.
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DeclSpec DS(AttrFactory);
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if (Attrs)
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DS.addAttributes(*Attrs);
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ParseSpecifierQualifierList(DS, AS, DSC);
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if (OwnedType)
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*OwnedType = DS.isTypeSpecOwned() ? DS.getRepAsDecl() : nullptr;
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// Parse the abstract-declarator, if present.
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Declarator DeclaratorInfo(DS, Context);
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ParseDeclarator(DeclaratorInfo);
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if (Range)
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*Range = DeclaratorInfo.getSourceRange();
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if (DeclaratorInfo.isInvalidType())
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return true;
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return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
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}
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/// Normalizes an attribute name by dropping prefixed and suffixed __.
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static StringRef normalizeAttrName(StringRef Name) {
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if (Name.size() >= 4 && Name.startswith("__") && Name.endswith("__"))
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return Name.drop_front(2).drop_back(2);
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return Name;
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}
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/// isAttributeLateParsed - Return true if the attribute has arguments that
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/// require late parsing.
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static bool isAttributeLateParsed(const IdentifierInfo &II) {
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#define CLANG_ATTR_LATE_PARSED_LIST
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return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
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#include "clang/Parse/AttrParserStringSwitches.inc"
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.Default(false);
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#undef CLANG_ATTR_LATE_PARSED_LIST
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}
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/// ParseGNUAttributes - Parse a non-empty attributes list.
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///
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/// [GNU] attributes:
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/// attribute
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/// attributes attribute
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///
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/// [GNU] attribute:
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/// '__attribute__' '(' '(' attribute-list ')' ')'
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///
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/// [GNU] attribute-list:
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/// attrib
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/// attribute_list ',' attrib
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///
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/// [GNU] attrib:
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/// empty
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/// attrib-name
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/// attrib-name '(' identifier ')'
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/// attrib-name '(' identifier ',' nonempty-expr-list ')'
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/// attrib-name '(' argument-expression-list [C99 6.5.2] ')'
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///
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/// [GNU] attrib-name:
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/// identifier
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/// typespec
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/// typequal
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/// storageclass
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///
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/// Whether an attribute takes an 'identifier' is determined by the
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/// attrib-name. GCC's behavior here is not worth imitating:
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///
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/// * In C mode, if the attribute argument list starts with an identifier
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/// followed by a ',' or an ')', and the identifier doesn't resolve to
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/// a type, it is parsed as an identifier. If the attribute actually
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/// wanted an expression, it's out of luck (but it turns out that no
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/// attributes work that way, because C constant expressions are very
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/// limited).
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/// * In C++ mode, if the attribute argument list starts with an identifier,
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/// and the attribute *wants* an identifier, it is parsed as an identifier.
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/// At block scope, any additional tokens between the identifier and the
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/// ',' or ')' are ignored, otherwise they produce a parse error.
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///
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/// We follow the C++ model, but don't allow junk after the identifier.
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void Parser::ParseGNUAttributes(ParsedAttributes &attrs,
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SourceLocation *endLoc,
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LateParsedAttrList *LateAttrs,
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Declarator *D) {
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assert(Tok.is(tok::kw___attribute) && "Not a GNU attribute list!");
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while (Tok.is(tok::kw___attribute)) {
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ConsumeToken();
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if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after,
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"attribute")) {
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SkipUntil(tok::r_paren, StopAtSemi); // skip until ) or ;
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return;
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}
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if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after, "(")) {
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SkipUntil(tok::r_paren, StopAtSemi); // skip until ) or ;
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return;
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}
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// Parse the attribute-list. e.g. __attribute__(( weak, alias("__f") ))
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while (true) {
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// Allow empty/non-empty attributes. ((__vector_size__(16),,,,))
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if (TryConsumeToken(tok::comma))
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continue;
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// Expect an identifier or declaration specifier (const, int, etc.)
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if (Tok.isAnnotation())
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break;
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IdentifierInfo *AttrName = Tok.getIdentifierInfo();
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if (!AttrName)
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break;
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SourceLocation AttrNameLoc = ConsumeToken();
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if (Tok.isNot(tok::l_paren)) {
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attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
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ParsedAttr::AS_GNU);
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continue;
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}
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// Handle "parameterized" attributes
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if (!LateAttrs || !isAttributeLateParsed(*AttrName)) {
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ParseGNUAttributeArgs(AttrName, AttrNameLoc, attrs, endLoc, nullptr,
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SourceLocation(), ParsedAttr::AS_GNU, D);
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continue;
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}
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// Handle attributes with arguments that require late parsing.
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LateParsedAttribute *LA =
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new LateParsedAttribute(this, *AttrName, AttrNameLoc);
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LateAttrs->push_back(LA);
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// Attributes in a class are parsed at the end of the class, along
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// with other late-parsed declarations.
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if (!ClassStack.empty() && !LateAttrs->parseSoon())
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getCurrentClass().LateParsedDeclarations.push_back(LA);
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// Be sure ConsumeAndStoreUntil doesn't see the start l_paren, since it
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// recursively consumes balanced parens.
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LA->Toks.push_back(Tok);
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ConsumeParen();
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// Consume everything up to and including the matching right parens.
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ConsumeAndStoreUntil(tok::r_paren, LA->Toks, /*StopAtSemi=*/true);
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Token Eof;
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Eof.startToken();
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Eof.setLocation(Tok.getLocation());
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LA->Toks.push_back(Eof);
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}
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if (ExpectAndConsume(tok::r_paren))
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SkipUntil(tok::r_paren, StopAtSemi);
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SourceLocation Loc = Tok.getLocation();
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if (ExpectAndConsume(tok::r_paren))
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SkipUntil(tok::r_paren, StopAtSemi);
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if (endLoc)
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*endLoc = Loc;
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}
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}
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/// Determine whether the given attribute has an identifier argument.
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static bool attributeHasIdentifierArg(const IdentifierInfo &II) {
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#define CLANG_ATTR_IDENTIFIER_ARG_LIST
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return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
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#include "clang/Parse/AttrParserStringSwitches.inc"
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.Default(false);
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#undef CLANG_ATTR_IDENTIFIER_ARG_LIST
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}
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/// Determine whether the given attribute has a variadic identifier argument.
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static bool attributeHasVariadicIdentifierArg(const IdentifierInfo &II) {
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#define CLANG_ATTR_VARIADIC_IDENTIFIER_ARG_LIST
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return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
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#include "clang/Parse/AttrParserStringSwitches.inc"
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.Default(false);
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#undef CLANG_ATTR_VARIADIC_IDENTIFIER_ARG_LIST
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}
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/// Determine whether the given attribute parses a type argument.
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static bool attributeIsTypeArgAttr(const IdentifierInfo &II) {
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#define CLANG_ATTR_TYPE_ARG_LIST
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return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
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#include "clang/Parse/AttrParserStringSwitches.inc"
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.Default(false);
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#undef CLANG_ATTR_TYPE_ARG_LIST
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}
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/// Determine whether the given attribute requires parsing its arguments
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/// in an unevaluated context or not.
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static bool attributeParsedArgsUnevaluated(const IdentifierInfo &II) {
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#define CLANG_ATTR_ARG_CONTEXT_LIST
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return llvm::StringSwitch<bool>(normalizeAttrName(II.getName()))
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#include "clang/Parse/AttrParserStringSwitches.inc"
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.Default(false);
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#undef CLANG_ATTR_ARG_CONTEXT_LIST
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}
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IdentifierLoc *Parser::ParseIdentifierLoc() {
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assert(Tok.is(tok::identifier) && "expected an identifier");
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IdentifierLoc *IL = IdentifierLoc::create(Actions.Context,
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Tok.getLocation(),
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Tok.getIdentifierInfo());
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ConsumeToken();
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return IL;
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}
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void Parser::ParseAttributeWithTypeArg(IdentifierInfo &AttrName,
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SourceLocation AttrNameLoc,
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ParsedAttributes &Attrs,
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SourceLocation *EndLoc,
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IdentifierInfo *ScopeName,
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SourceLocation ScopeLoc,
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ParsedAttr::Syntax Syntax) {
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BalancedDelimiterTracker Parens(*this, tok::l_paren);
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Parens.consumeOpen();
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TypeResult T;
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if (Tok.isNot(tok::r_paren))
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T = ParseTypeName();
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if (Parens.consumeClose())
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return;
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if (T.isInvalid())
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return;
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if (T.isUsable())
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Attrs.addNewTypeAttr(&AttrName,
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SourceRange(AttrNameLoc, Parens.getCloseLocation()),
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ScopeName, ScopeLoc, T.get(), Syntax);
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else
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Attrs.addNew(&AttrName, SourceRange(AttrNameLoc, Parens.getCloseLocation()),
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ScopeName, ScopeLoc, nullptr, 0, Syntax);
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}
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unsigned Parser::ParseAttributeArgsCommon(
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IdentifierInfo *AttrName, SourceLocation AttrNameLoc,
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ParsedAttributes &Attrs, SourceLocation *EndLoc, IdentifierInfo *ScopeName,
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SourceLocation ScopeLoc, ParsedAttr::Syntax Syntax) {
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// Ignore the left paren location for now.
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ConsumeParen();
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ArgsVector ArgExprs;
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if (Tok.is(tok::identifier)) {
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// If this attribute wants an 'identifier' argument, make it so.
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bool IsIdentifierArg = attributeHasIdentifierArg(*AttrName) ||
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attributeHasVariadicIdentifierArg(*AttrName);
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ParsedAttr::Kind AttrKind =
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ParsedAttr::getKind(AttrName, ScopeName, Syntax);
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// If we don't know how to parse this attribute, but this is the only
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// token in this argument, assume it's meant to be an identifier.
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if (AttrKind == ParsedAttr::UnknownAttribute ||
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AttrKind == ParsedAttr::IgnoredAttribute) {
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const Token &Next = NextToken();
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IsIdentifierArg = Next.isOneOf(tok::r_paren, tok::comma);
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}
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if (IsIdentifierArg)
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ArgExprs.push_back(ParseIdentifierLoc());
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}
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if (!ArgExprs.empty() ? Tok.is(tok::comma) : Tok.isNot(tok::r_paren)) {
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// Eat the comma.
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if (!ArgExprs.empty())
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ConsumeToken();
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// Parse the non-empty comma-separated list of expressions.
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do {
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ExprResult ArgExpr;
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if (Tok.is(tok::identifier) &&
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attributeHasVariadicIdentifierArg(*AttrName)) {
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ArgExprs.push_back(ParseIdentifierLoc());
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} else {
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bool Uneval = attributeParsedArgsUnevaluated(*AttrName);
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EnterExpressionEvaluationContext Unevaluated(
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Actions,
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Uneval ? Sema::ExpressionEvaluationContext::Unevaluated
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: Sema::ExpressionEvaluationContext::ConstantEvaluated);
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ExprResult ArgExpr(
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Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression()));
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if (ArgExpr.isInvalid()) {
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SkipUntil(tok::r_paren, StopAtSemi);
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return 0;
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}
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ArgExprs.push_back(ArgExpr.get());
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}
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// Eat the comma, move to the next argument
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} while (TryConsumeToken(tok::comma));
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}
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SourceLocation RParen = Tok.getLocation();
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if (!ExpectAndConsume(tok::r_paren)) {
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SourceLocation AttrLoc = ScopeLoc.isValid() ? ScopeLoc : AttrNameLoc;
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Attrs.addNew(AttrName, SourceRange(AttrLoc, RParen), ScopeName, ScopeLoc,
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ArgExprs.data(), ArgExprs.size(), Syntax);
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}
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if (EndLoc)
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*EndLoc = RParen;
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return static_cast<unsigned>(ArgExprs.size());
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}
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/// Parse the arguments to a parameterized GNU attribute or
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/// a C++11 attribute in "gnu" namespace.
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void Parser::ParseGNUAttributeArgs(IdentifierInfo *AttrName,
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SourceLocation AttrNameLoc,
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ParsedAttributes &Attrs,
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SourceLocation *EndLoc,
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IdentifierInfo *ScopeName,
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SourceLocation ScopeLoc,
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ParsedAttr::Syntax Syntax,
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Declarator *D) {
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assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
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ParsedAttr::Kind AttrKind =
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ParsedAttr::getKind(AttrName, ScopeName, Syntax);
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if (AttrKind == ParsedAttr::AT_Availability) {
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ParseAvailabilityAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
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ScopeLoc, Syntax);
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return;
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} else if (AttrKind == ParsedAttr::AT_ExternalSourceSymbol) {
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ParseExternalSourceSymbolAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
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ScopeName, ScopeLoc, Syntax);
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return;
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} else if (AttrKind == ParsedAttr::AT_ObjCBridgeRelated) {
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ParseObjCBridgeRelatedAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
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ScopeName, ScopeLoc, Syntax);
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return;
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} else if (AttrKind == ParsedAttr::AT_TypeTagForDatatype) {
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ParseTypeTagForDatatypeAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
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ScopeName, ScopeLoc, Syntax);
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return;
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} else if (attributeIsTypeArgAttr(*AttrName)) {
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ParseAttributeWithTypeArg(*AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
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ScopeLoc, Syntax);
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return;
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}
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// These may refer to the function arguments, but need to be parsed early to
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// participate in determining whether it's a redeclaration.
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llvm::Optional<ParseScope> PrototypeScope;
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if (normalizeAttrName(AttrName->getName()) == "enable_if" &&
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D && D->isFunctionDeclarator()) {
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DeclaratorChunk::FunctionTypeInfo FTI = D->getFunctionTypeInfo();
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PrototypeScope.emplace(this, Scope::FunctionPrototypeScope |
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Scope::FunctionDeclarationScope |
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Scope::DeclScope);
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for (unsigned i = 0; i != FTI.NumParams; ++i) {
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ParmVarDecl *Param = cast<ParmVarDecl>(FTI.Params[i].Param);
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Actions.ActOnReenterCXXMethodParameter(getCurScope(), Param);
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}
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}
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ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
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ScopeLoc, Syntax);
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}
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unsigned Parser::ParseClangAttributeArgs(
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IdentifierInfo *AttrName, SourceLocation AttrNameLoc,
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ParsedAttributes &Attrs, SourceLocation *EndLoc, IdentifierInfo *ScopeName,
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SourceLocation ScopeLoc, ParsedAttr::Syntax Syntax) {
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assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
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ParsedAttr::Kind AttrKind =
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ParsedAttr::getKind(AttrName, ScopeName, Syntax);
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switch (AttrKind) {
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default:
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return ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, EndLoc,
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ScopeName, ScopeLoc, Syntax);
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case ParsedAttr::AT_ExternalSourceSymbol:
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ParseExternalSourceSymbolAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
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ScopeName, ScopeLoc, Syntax);
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break;
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case ParsedAttr::AT_Availability:
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ParseAvailabilityAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc, ScopeName,
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ScopeLoc, Syntax);
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break;
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case ParsedAttr::AT_ObjCBridgeRelated:
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ParseObjCBridgeRelatedAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
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ScopeName, ScopeLoc, Syntax);
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break;
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case ParsedAttr::AT_TypeTagForDatatype:
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ParseTypeTagForDatatypeAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc,
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ScopeName, ScopeLoc, Syntax);
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break;
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}
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return !Attrs.empty() ? Attrs.begin()->getNumArgs() : 0;
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}
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bool Parser::ParseMicrosoftDeclSpecArgs(IdentifierInfo *AttrName,
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SourceLocation AttrNameLoc,
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ParsedAttributes &Attrs) {
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// If the attribute isn't known, we will not attempt to parse any
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// arguments.
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if (!hasAttribute(AttrSyntax::Declspec, nullptr, AttrName,
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getTargetInfo(), getLangOpts())) {
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// Eat the left paren, then skip to the ending right paren.
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ConsumeParen();
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SkipUntil(tok::r_paren);
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return false;
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}
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SourceLocation OpenParenLoc = Tok.getLocation();
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if (AttrName->getName() == "property") {
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// The property declspec is more complex in that it can take one or two
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// assignment expressions as a parameter, but the lhs of the assignment
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// must be named get or put.
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BalancedDelimiterTracker T(*this, tok::l_paren);
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T.expectAndConsume(diag::err_expected_lparen_after,
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AttrName->getNameStart(), tok::r_paren);
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enum AccessorKind {
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AK_Invalid = -1,
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AK_Put = 0,
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AK_Get = 1 // indices into AccessorNames
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};
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IdentifierInfo *AccessorNames[] = {nullptr, nullptr};
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bool HasInvalidAccessor = false;
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|
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// Parse the accessor specifications.
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while (true) {
|
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// Stop if this doesn't look like an accessor spec.
|
|
if (!Tok.is(tok::identifier)) {
|
|
// If the user wrote a completely empty list, use a special diagnostic.
|
|
if (Tok.is(tok::r_paren) && !HasInvalidAccessor &&
|
|
AccessorNames[AK_Put] == nullptr &&
|
|
AccessorNames[AK_Get] == nullptr) {
|
|
Diag(AttrNameLoc, diag::err_ms_property_no_getter_or_putter);
|
|
break;
|
|
}
|
|
|
|
Diag(Tok.getLocation(), diag::err_ms_property_unknown_accessor);
|
|
break;
|
|
}
|
|
|
|
AccessorKind Kind;
|
|
SourceLocation KindLoc = Tok.getLocation();
|
|
StringRef KindStr = Tok.getIdentifierInfo()->getName();
|
|
if (KindStr == "get") {
|
|
Kind = AK_Get;
|
|
} else if (KindStr == "put") {
|
|
Kind = AK_Put;
|
|
|
|
// Recover from the common mistake of using 'set' instead of 'put'.
|
|
} else if (KindStr == "set") {
|
|
Diag(KindLoc, diag::err_ms_property_has_set_accessor)
|
|
<< FixItHint::CreateReplacement(KindLoc, "put");
|
|
Kind = AK_Put;
|
|
|
|
// Handle the mistake of forgetting the accessor kind by skipping
|
|
// this accessor.
|
|
} else if (NextToken().is(tok::comma) || NextToken().is(tok::r_paren)) {
|
|
Diag(KindLoc, diag::err_ms_property_missing_accessor_kind);
|
|
ConsumeToken();
|
|
HasInvalidAccessor = true;
|
|
goto next_property_accessor;
|
|
|
|
// Otherwise, complain about the unknown accessor kind.
|
|
} else {
|
|
Diag(KindLoc, diag::err_ms_property_unknown_accessor);
|
|
HasInvalidAccessor = true;
|
|
Kind = AK_Invalid;
|
|
|
|
// Try to keep parsing unless it doesn't look like an accessor spec.
|
|
if (!NextToken().is(tok::equal))
|
|
break;
|
|
}
|
|
|
|
// Consume the identifier.
|
|
ConsumeToken();
|
|
|
|
// Consume the '='.
|
|
if (!TryConsumeToken(tok::equal)) {
|
|
Diag(Tok.getLocation(), diag::err_ms_property_expected_equal)
|
|
<< KindStr;
|
|
break;
|
|
}
|
|
|
|
// Expect the method name.
|
|
if (!Tok.is(tok::identifier)) {
|
|
Diag(Tok.getLocation(), diag::err_ms_property_expected_accessor_name);
|
|
break;
|
|
}
|
|
|
|
if (Kind == AK_Invalid) {
|
|
// Just drop invalid accessors.
|
|
} else if (AccessorNames[Kind] != nullptr) {
|
|
// Complain about the repeated accessor, ignore it, and keep parsing.
|
|
Diag(KindLoc, diag::err_ms_property_duplicate_accessor) << KindStr;
|
|
} else {
|
|
AccessorNames[Kind] = Tok.getIdentifierInfo();
|
|
}
|
|
ConsumeToken();
|
|
|
|
next_property_accessor:
|
|
// Keep processing accessors until we run out.
|
|
if (TryConsumeToken(tok::comma))
|
|
continue;
|
|
|
|
// If we run into the ')', stop without consuming it.
|
|
if (Tok.is(tok::r_paren))
|
|
break;
|
|
|
|
Diag(Tok.getLocation(), diag::err_ms_property_expected_comma_or_rparen);
|
|
break;
|
|
}
|
|
|
|
// Only add the property attribute if it was well-formed.
|
|
if (!HasInvalidAccessor)
|
|
Attrs.addNewPropertyAttr(AttrName, AttrNameLoc, nullptr, SourceLocation(),
|
|
AccessorNames[AK_Get], AccessorNames[AK_Put],
|
|
ParsedAttr::AS_Declspec);
|
|
T.skipToEnd();
|
|
return !HasInvalidAccessor;
|
|
}
|
|
|
|
unsigned NumArgs =
|
|
ParseAttributeArgsCommon(AttrName, AttrNameLoc, Attrs, nullptr, nullptr,
|
|
SourceLocation(), ParsedAttr::AS_Declspec);
|
|
|
|
// If this attribute's args were parsed, and it was expected to have
|
|
// arguments but none were provided, emit a diagnostic.
|
|
if (!Attrs.empty() && Attrs.begin()->getMaxArgs() && !NumArgs) {
|
|
Diag(OpenParenLoc, diag::err_attribute_requires_arguments) << AttrName;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/// [MS] decl-specifier:
|
|
/// __declspec ( extended-decl-modifier-seq )
|
|
///
|
|
/// [MS] extended-decl-modifier-seq:
|
|
/// extended-decl-modifier[opt]
|
|
/// extended-decl-modifier extended-decl-modifier-seq
|
|
void Parser::ParseMicrosoftDeclSpecs(ParsedAttributes &Attrs,
|
|
SourceLocation *End) {
|
|
assert(getLangOpts().DeclSpecKeyword && "__declspec keyword is not enabled");
|
|
assert(Tok.is(tok::kw___declspec) && "Not a declspec!");
|
|
|
|
while (Tok.is(tok::kw___declspec)) {
|
|
ConsumeToken();
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.expectAndConsume(diag::err_expected_lparen_after, "__declspec",
|
|
tok::r_paren))
|
|
return;
|
|
|
|
// An empty declspec is perfectly legal and should not warn. Additionally,
|
|
// you can specify multiple attributes per declspec.
|
|
while (Tok.isNot(tok::r_paren)) {
|
|
// Attribute not present.
|
|
if (TryConsumeToken(tok::comma))
|
|
continue;
|
|
|
|
// We expect either a well-known identifier or a generic string. Anything
|
|
// else is a malformed declspec.
|
|
bool IsString = Tok.getKind() == tok::string_literal;
|
|
if (!IsString && Tok.getKind() != tok::identifier &&
|
|
Tok.getKind() != tok::kw_restrict) {
|
|
Diag(Tok, diag::err_ms_declspec_type);
|
|
T.skipToEnd();
|
|
return;
|
|
}
|
|
|
|
IdentifierInfo *AttrName;
|
|
SourceLocation AttrNameLoc;
|
|
if (IsString) {
|
|
SmallString<8> StrBuffer;
|
|
bool Invalid = false;
|
|
StringRef Str = PP.getSpelling(Tok, StrBuffer, &Invalid);
|
|
if (Invalid) {
|
|
T.skipToEnd();
|
|
return;
|
|
}
|
|
AttrName = PP.getIdentifierInfo(Str);
|
|
AttrNameLoc = ConsumeStringToken();
|
|
} else {
|
|
AttrName = Tok.getIdentifierInfo();
|
|
AttrNameLoc = ConsumeToken();
|
|
}
|
|
|
|
bool AttrHandled = false;
|
|
|
|
// Parse attribute arguments.
|
|
if (Tok.is(tok::l_paren))
|
|
AttrHandled = ParseMicrosoftDeclSpecArgs(AttrName, AttrNameLoc, Attrs);
|
|
else if (AttrName->getName() == "property")
|
|
// The property attribute must have an argument list.
|
|
Diag(Tok.getLocation(), diag::err_expected_lparen_after)
|
|
<< AttrName->getName();
|
|
|
|
if (!AttrHandled)
|
|
Attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
|
|
ParsedAttr::AS_Declspec);
|
|
}
|
|
T.consumeClose();
|
|
if (End)
|
|
*End = T.getCloseLocation();
|
|
}
|
|
}
|
|
|
|
void Parser::ParseMicrosoftTypeAttributes(ParsedAttributes &attrs) {
|
|
// Treat these like attributes
|
|
while (true) {
|
|
switch (Tok.getKind()) {
|
|
case tok::kw___fastcall:
|
|
case tok::kw___stdcall:
|
|
case tok::kw___thiscall:
|
|
case tok::kw___regcall:
|
|
case tok::kw___cdecl:
|
|
case tok::kw___vectorcall:
|
|
case tok::kw___ptr64:
|
|
case tok::kw___w64:
|
|
case tok::kw___ptr32:
|
|
case tok::kw___sptr:
|
|
case tok::kw___uptr: {
|
|
IdentifierInfo *AttrName = Tok.getIdentifierInfo();
|
|
SourceLocation AttrNameLoc = ConsumeToken();
|
|
attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
|
|
ParsedAttr::AS_Keyword);
|
|
break;
|
|
}
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Parser::DiagnoseAndSkipExtendedMicrosoftTypeAttributes() {
|
|
SourceLocation StartLoc = Tok.getLocation();
|
|
SourceLocation EndLoc = SkipExtendedMicrosoftTypeAttributes();
|
|
|
|
if (EndLoc.isValid()) {
|
|
SourceRange Range(StartLoc, EndLoc);
|
|
Diag(StartLoc, diag::warn_microsoft_qualifiers_ignored) << Range;
|
|
}
|
|
}
|
|
|
|
SourceLocation Parser::SkipExtendedMicrosoftTypeAttributes() {
|
|
SourceLocation EndLoc;
|
|
|
|
while (true) {
|
|
switch (Tok.getKind()) {
|
|
case tok::kw_const:
|
|
case tok::kw_volatile:
|
|
case tok::kw___fastcall:
|
|
case tok::kw___stdcall:
|
|
case tok::kw___thiscall:
|
|
case tok::kw___cdecl:
|
|
case tok::kw___vectorcall:
|
|
case tok::kw___ptr32:
|
|
case tok::kw___ptr64:
|
|
case tok::kw___w64:
|
|
case tok::kw___unaligned:
|
|
case tok::kw___sptr:
|
|
case tok::kw___uptr:
|
|
EndLoc = ConsumeToken();
|
|
break;
|
|
default:
|
|
return EndLoc;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Parser::ParseBorlandTypeAttributes(ParsedAttributes &attrs) {
|
|
// Treat these like attributes
|
|
while (Tok.is(tok::kw___pascal)) {
|
|
IdentifierInfo *AttrName = Tok.getIdentifierInfo();
|
|
SourceLocation AttrNameLoc = ConsumeToken();
|
|
attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
|
|
ParsedAttr::AS_Keyword);
|
|
}
|
|
}
|
|
|
|
void Parser::ParseOpenCLKernelAttributes(ParsedAttributes &attrs) {
|
|
// Treat these like attributes
|
|
while (Tok.is(tok::kw___kernel)) {
|
|
IdentifierInfo *AttrName = Tok.getIdentifierInfo();
|
|
SourceLocation AttrNameLoc = ConsumeToken();
|
|
attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
|
|
ParsedAttr::AS_Keyword);
|
|
}
|
|
}
|
|
|
|
void Parser::ParseOpenCLQualifiers(ParsedAttributes &Attrs) {
|
|
IdentifierInfo *AttrName = Tok.getIdentifierInfo();
|
|
SourceLocation AttrNameLoc = Tok.getLocation();
|
|
Attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
|
|
ParsedAttr::AS_Keyword);
|
|
}
|
|
|
|
void Parser::ParseNullabilityTypeSpecifiers(ParsedAttributes &attrs) {
|
|
// Treat these like attributes, even though they're type specifiers.
|
|
while (true) {
|
|
switch (Tok.getKind()) {
|
|
case tok::kw__Nonnull:
|
|
case tok::kw__Nullable:
|
|
case tok::kw__Null_unspecified: {
|
|
IdentifierInfo *AttrName = Tok.getIdentifierInfo();
|
|
SourceLocation AttrNameLoc = ConsumeToken();
|
|
if (!getLangOpts().ObjC)
|
|
Diag(AttrNameLoc, diag::ext_nullability)
|
|
<< AttrName;
|
|
attrs.addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc, nullptr, 0,
|
|
ParsedAttr::AS_Keyword);
|
|
break;
|
|
}
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool VersionNumberSeparator(const char Separator) {
|
|
return (Separator == '.' || Separator == '_');
|
|
}
|
|
|
|
/// Parse a version number.
|
|
///
|
|
/// version:
|
|
/// simple-integer
|
|
/// simple-integer '.' simple-integer
|
|
/// simple-integer '_' simple-integer
|
|
/// simple-integer '.' simple-integer '.' simple-integer
|
|
/// simple-integer '_' simple-integer '_' simple-integer
|
|
VersionTuple Parser::ParseVersionTuple(SourceRange &Range) {
|
|
Range = SourceRange(Tok.getLocation(), Tok.getEndLoc());
|
|
|
|
if (!Tok.is(tok::numeric_constant)) {
|
|
Diag(Tok, diag::err_expected_version);
|
|
SkipUntil(tok::comma, tok::r_paren,
|
|
StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
|
|
return VersionTuple();
|
|
}
|
|
|
|
// Parse the major (and possibly minor and subminor) versions, which
|
|
// are stored in the numeric constant. We utilize a quirk of the
|
|
// lexer, which is that it handles something like 1.2.3 as a single
|
|
// numeric constant, rather than two separate tokens.
|
|
SmallString<512> Buffer;
|
|
Buffer.resize(Tok.getLength()+1);
|
|
const char *ThisTokBegin = &Buffer[0];
|
|
|
|
// Get the spelling of the token, which eliminates trigraphs, etc.
|
|
bool Invalid = false;
|
|
unsigned ActualLength = PP.getSpelling(Tok, ThisTokBegin, &Invalid);
|
|
if (Invalid)
|
|
return VersionTuple();
|
|
|
|
// Parse the major version.
|
|
unsigned AfterMajor = 0;
|
|
unsigned Major = 0;
|
|
while (AfterMajor < ActualLength && isDigit(ThisTokBegin[AfterMajor])) {
|
|
Major = Major * 10 + ThisTokBegin[AfterMajor] - '0';
|
|
++AfterMajor;
|
|
}
|
|
|
|
if (AfterMajor == 0) {
|
|
Diag(Tok, diag::err_expected_version);
|
|
SkipUntil(tok::comma, tok::r_paren,
|
|
StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
|
|
return VersionTuple();
|
|
}
|
|
|
|
if (AfterMajor == ActualLength) {
|
|
ConsumeToken();
|
|
|
|
// We only had a single version component.
|
|
if (Major == 0) {
|
|
Diag(Tok, diag::err_zero_version);
|
|
return VersionTuple();
|
|
}
|
|
|
|
return VersionTuple(Major);
|
|
}
|
|
|
|
const char AfterMajorSeparator = ThisTokBegin[AfterMajor];
|
|
if (!VersionNumberSeparator(AfterMajorSeparator)
|
|
|| (AfterMajor + 1 == ActualLength)) {
|
|
Diag(Tok, diag::err_expected_version);
|
|
SkipUntil(tok::comma, tok::r_paren,
|
|
StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
|
|
return VersionTuple();
|
|
}
|
|
|
|
// Parse the minor version.
|
|
unsigned AfterMinor = AfterMajor + 1;
|
|
unsigned Minor = 0;
|
|
while (AfterMinor < ActualLength && isDigit(ThisTokBegin[AfterMinor])) {
|
|
Minor = Minor * 10 + ThisTokBegin[AfterMinor] - '0';
|
|
++AfterMinor;
|
|
}
|
|
|
|
if (AfterMinor == ActualLength) {
|
|
ConsumeToken();
|
|
|
|
// We had major.minor.
|
|
if (Major == 0 && Minor == 0) {
|
|
Diag(Tok, diag::err_zero_version);
|
|
return VersionTuple();
|
|
}
|
|
|
|
return VersionTuple(Major, Minor);
|
|
}
|
|
|
|
const char AfterMinorSeparator = ThisTokBegin[AfterMinor];
|
|
// If what follows is not a '.' or '_', we have a problem.
|
|
if (!VersionNumberSeparator(AfterMinorSeparator)) {
|
|
Diag(Tok, diag::err_expected_version);
|
|
SkipUntil(tok::comma, tok::r_paren,
|
|
StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
|
|
return VersionTuple();
|
|
}
|
|
|
|
// Warn if separators, be it '.' or '_', do not match.
|
|
if (AfterMajorSeparator != AfterMinorSeparator)
|
|
Diag(Tok, diag::warn_expected_consistent_version_separator);
|
|
|
|
// Parse the subminor version.
|
|
unsigned AfterSubminor = AfterMinor + 1;
|
|
unsigned Subminor = 0;
|
|
while (AfterSubminor < ActualLength && isDigit(ThisTokBegin[AfterSubminor])) {
|
|
Subminor = Subminor * 10 + ThisTokBegin[AfterSubminor] - '0';
|
|
++AfterSubminor;
|
|
}
|
|
|
|
if (AfterSubminor != ActualLength) {
|
|
Diag(Tok, diag::err_expected_version);
|
|
SkipUntil(tok::comma, tok::r_paren,
|
|
StopAtSemi | StopBeforeMatch | StopAtCodeCompletion);
|
|
return VersionTuple();
|
|
}
|
|
ConsumeToken();
|
|
return VersionTuple(Major, Minor, Subminor);
|
|
}
|
|
|
|
/// Parse the contents of the "availability" attribute.
|
|
///
|
|
/// availability-attribute:
|
|
/// 'availability' '(' platform ',' opt-strict version-arg-list,
|
|
/// opt-replacement, opt-message')'
|
|
///
|
|
/// platform:
|
|
/// identifier
|
|
///
|
|
/// opt-strict:
|
|
/// 'strict' ','
|
|
///
|
|
/// version-arg-list:
|
|
/// version-arg
|
|
/// version-arg ',' version-arg-list
|
|
///
|
|
/// version-arg:
|
|
/// 'introduced' '=' version
|
|
/// 'deprecated' '=' version
|
|
/// 'obsoleted' = version
|
|
/// 'unavailable'
|
|
/// opt-replacement:
|
|
/// 'replacement' '=' <string>
|
|
/// opt-message:
|
|
/// 'message' '=' <string>
|
|
void Parser::ParseAvailabilityAttribute(IdentifierInfo &Availability,
|
|
SourceLocation AvailabilityLoc,
|
|
ParsedAttributes &attrs,
|
|
SourceLocation *endLoc,
|
|
IdentifierInfo *ScopeName,
|
|
SourceLocation ScopeLoc,
|
|
ParsedAttr::Syntax Syntax) {
|
|
enum { Introduced, Deprecated, Obsoleted, Unknown };
|
|
AvailabilityChange Changes[Unknown];
|
|
ExprResult MessageExpr, ReplacementExpr;
|
|
|
|
// Opening '('.
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.consumeOpen()) {
|
|
Diag(Tok, diag::err_expected) << tok::l_paren;
|
|
return;
|
|
}
|
|
|
|
// Parse the platform name.
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_availability_expected_platform);
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
IdentifierLoc *Platform = ParseIdentifierLoc();
|
|
if (const IdentifierInfo *const Ident = Platform->Ident) {
|
|
// Canonicalize platform name from "macosx" to "macos".
|
|
if (Ident->getName() == "macosx")
|
|
Platform->Ident = PP.getIdentifierInfo("macos");
|
|
// Canonicalize platform name from "macosx_app_extension" to
|
|
// "macos_app_extension".
|
|
else if (Ident->getName() == "macosx_app_extension")
|
|
Platform->Ident = PP.getIdentifierInfo("macos_app_extension");
|
|
else
|
|
Platform->Ident = PP.getIdentifierInfo(
|
|
AvailabilityAttr::canonicalizePlatformName(Ident->getName()));
|
|
}
|
|
|
|
// Parse the ',' following the platform name.
|
|
if (ExpectAndConsume(tok::comma)) {
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
// If we haven't grabbed the pointers for the identifiers
|
|
// "introduced", "deprecated", and "obsoleted", do so now.
|
|
if (!Ident_introduced) {
|
|
Ident_introduced = PP.getIdentifierInfo("introduced");
|
|
Ident_deprecated = PP.getIdentifierInfo("deprecated");
|
|
Ident_obsoleted = PP.getIdentifierInfo("obsoleted");
|
|
Ident_unavailable = PP.getIdentifierInfo("unavailable");
|
|
Ident_message = PP.getIdentifierInfo("message");
|
|
Ident_strict = PP.getIdentifierInfo("strict");
|
|
Ident_replacement = PP.getIdentifierInfo("replacement");
|
|
}
|
|
|
|
// Parse the optional "strict", the optional "replacement" and the set of
|
|
// introductions/deprecations/removals.
|
|
SourceLocation UnavailableLoc, StrictLoc;
|
|
do {
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_availability_expected_change);
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
IdentifierInfo *Keyword = Tok.getIdentifierInfo();
|
|
SourceLocation KeywordLoc = ConsumeToken();
|
|
|
|
if (Keyword == Ident_strict) {
|
|
if (StrictLoc.isValid()) {
|
|
Diag(KeywordLoc, diag::err_availability_redundant)
|
|
<< Keyword << SourceRange(StrictLoc);
|
|
}
|
|
StrictLoc = KeywordLoc;
|
|
continue;
|
|
}
|
|
|
|
if (Keyword == Ident_unavailable) {
|
|
if (UnavailableLoc.isValid()) {
|
|
Diag(KeywordLoc, diag::err_availability_redundant)
|
|
<< Keyword << SourceRange(UnavailableLoc);
|
|
}
|
|
UnavailableLoc = KeywordLoc;
|
|
continue;
|
|
}
|
|
|
|
if (Keyword == Ident_deprecated && Platform->Ident &&
|
|
Platform->Ident->isStr("swift")) {
|
|
// For swift, we deprecate for all versions.
|
|
if (Changes[Deprecated].KeywordLoc.isValid()) {
|
|
Diag(KeywordLoc, diag::err_availability_redundant)
|
|
<< Keyword
|
|
<< SourceRange(Changes[Deprecated].KeywordLoc);
|
|
}
|
|
|
|
Changes[Deprecated].KeywordLoc = KeywordLoc;
|
|
// Use a fake version here.
|
|
Changes[Deprecated].Version = VersionTuple(1);
|
|
continue;
|
|
}
|
|
|
|
if (Tok.isNot(tok::equal)) {
|
|
Diag(Tok, diag::err_expected_after) << Keyword << tok::equal;
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
ConsumeToken();
|
|
if (Keyword == Ident_message || Keyword == Ident_replacement) {
|
|
if (Tok.isNot(tok::string_literal)) {
|
|
Diag(Tok, diag::err_expected_string_literal)
|
|
<< /*Source='availability attribute'*/2;
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
if (Keyword == Ident_message)
|
|
MessageExpr = ParseStringLiteralExpression();
|
|
else
|
|
ReplacementExpr = ParseStringLiteralExpression();
|
|
// Also reject wide string literals.
|
|
if (StringLiteral *MessageStringLiteral =
|
|
cast_or_null<StringLiteral>(MessageExpr.get())) {
|
|
if (MessageStringLiteral->getCharByteWidth() != 1) {
|
|
Diag(MessageStringLiteral->getSourceRange().getBegin(),
|
|
diag::err_expected_string_literal)
|
|
<< /*Source='availability attribute'*/ 2;
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
}
|
|
if (Keyword == Ident_message)
|
|
break;
|
|
else
|
|
continue;
|
|
}
|
|
|
|
// Special handling of 'NA' only when applied to introduced or
|
|
// deprecated.
|
|
if ((Keyword == Ident_introduced || Keyword == Ident_deprecated) &&
|
|
Tok.is(tok::identifier)) {
|
|
IdentifierInfo *NA = Tok.getIdentifierInfo();
|
|
if (NA->getName() == "NA") {
|
|
ConsumeToken();
|
|
if (Keyword == Ident_introduced)
|
|
UnavailableLoc = KeywordLoc;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
SourceRange VersionRange;
|
|
VersionTuple Version = ParseVersionTuple(VersionRange);
|
|
|
|
if (Version.empty()) {
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
unsigned Index;
|
|
if (Keyword == Ident_introduced)
|
|
Index = Introduced;
|
|
else if (Keyword == Ident_deprecated)
|
|
Index = Deprecated;
|
|
else if (Keyword == Ident_obsoleted)
|
|
Index = Obsoleted;
|
|
else
|
|
Index = Unknown;
|
|
|
|
if (Index < Unknown) {
|
|
if (!Changes[Index].KeywordLoc.isInvalid()) {
|
|
Diag(KeywordLoc, diag::err_availability_redundant)
|
|
<< Keyword
|
|
<< SourceRange(Changes[Index].KeywordLoc,
|
|
Changes[Index].VersionRange.getEnd());
|
|
}
|
|
|
|
Changes[Index].KeywordLoc = KeywordLoc;
|
|
Changes[Index].Version = Version;
|
|
Changes[Index].VersionRange = VersionRange;
|
|
} else {
|
|
Diag(KeywordLoc, diag::err_availability_unknown_change)
|
|
<< Keyword << VersionRange;
|
|
}
|
|
|
|
} while (TryConsumeToken(tok::comma));
|
|
|
|
// Closing ')'.
|
|
if (T.consumeClose())
|
|
return;
|
|
|
|
if (endLoc)
|
|
*endLoc = T.getCloseLocation();
|
|
|
|
// The 'unavailable' availability cannot be combined with any other
|
|
// availability changes. Make sure that hasn't happened.
|
|
if (UnavailableLoc.isValid()) {
|
|
bool Complained = false;
|
|
for (unsigned Index = Introduced; Index != Unknown; ++Index) {
|
|
if (Changes[Index].KeywordLoc.isValid()) {
|
|
if (!Complained) {
|
|
Diag(UnavailableLoc, diag::warn_availability_and_unavailable)
|
|
<< SourceRange(Changes[Index].KeywordLoc,
|
|
Changes[Index].VersionRange.getEnd());
|
|
Complained = true;
|
|
}
|
|
|
|
// Clear out the availability.
|
|
Changes[Index] = AvailabilityChange();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Record this attribute
|
|
attrs.addNew(&Availability,
|
|
SourceRange(AvailabilityLoc, T.getCloseLocation()),
|
|
ScopeName, ScopeLoc,
|
|
Platform,
|
|
Changes[Introduced],
|
|
Changes[Deprecated],
|
|
Changes[Obsoleted],
|
|
UnavailableLoc, MessageExpr.get(),
|
|
Syntax, StrictLoc, ReplacementExpr.get());
|
|
}
|
|
|
|
/// Parse the contents of the "external_source_symbol" attribute.
|
|
///
|
|
/// external-source-symbol-attribute:
|
|
/// 'external_source_symbol' '(' keyword-arg-list ')'
|
|
///
|
|
/// keyword-arg-list:
|
|
/// keyword-arg
|
|
/// keyword-arg ',' keyword-arg-list
|
|
///
|
|
/// keyword-arg:
|
|
/// 'language' '=' <string>
|
|
/// 'defined_in' '=' <string>
|
|
/// 'generated_declaration'
|
|
void Parser::ParseExternalSourceSymbolAttribute(
|
|
IdentifierInfo &ExternalSourceSymbol, SourceLocation Loc,
|
|
ParsedAttributes &Attrs, SourceLocation *EndLoc, IdentifierInfo *ScopeName,
|
|
SourceLocation ScopeLoc, ParsedAttr::Syntax Syntax) {
|
|
// Opening '('.
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.expectAndConsume())
|
|
return;
|
|
|
|
// Initialize the pointers for the keyword identifiers when required.
|
|
if (!Ident_language) {
|
|
Ident_language = PP.getIdentifierInfo("language");
|
|
Ident_defined_in = PP.getIdentifierInfo("defined_in");
|
|
Ident_generated_declaration = PP.getIdentifierInfo("generated_declaration");
|
|
}
|
|
|
|
ExprResult Language;
|
|
bool HasLanguage = false;
|
|
ExprResult DefinedInExpr;
|
|
bool HasDefinedIn = false;
|
|
IdentifierLoc *GeneratedDeclaration = nullptr;
|
|
|
|
// Parse the language/defined_in/generated_declaration keywords
|
|
do {
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_external_source_symbol_expected_keyword);
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
SourceLocation KeywordLoc = Tok.getLocation();
|
|
IdentifierInfo *Keyword = Tok.getIdentifierInfo();
|
|
if (Keyword == Ident_generated_declaration) {
|
|
if (GeneratedDeclaration) {
|
|
Diag(Tok, diag::err_external_source_symbol_duplicate_clause) << Keyword;
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
GeneratedDeclaration = ParseIdentifierLoc();
|
|
continue;
|
|
}
|
|
|
|
if (Keyword != Ident_language && Keyword != Ident_defined_in) {
|
|
Diag(Tok, diag::err_external_source_symbol_expected_keyword);
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
ConsumeToken();
|
|
if (ExpectAndConsume(tok::equal, diag::err_expected_after,
|
|
Keyword->getName())) {
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
bool HadLanguage = HasLanguage, HadDefinedIn = HasDefinedIn;
|
|
if (Keyword == Ident_language)
|
|
HasLanguage = true;
|
|
else
|
|
HasDefinedIn = true;
|
|
|
|
if (Tok.isNot(tok::string_literal)) {
|
|
Diag(Tok, diag::err_expected_string_literal)
|
|
<< /*Source='external_source_symbol attribute'*/ 3
|
|
<< /*language | source container*/ (Keyword != Ident_language);
|
|
SkipUntil(tok::comma, tok::r_paren, StopAtSemi | StopBeforeMatch);
|
|
continue;
|
|
}
|
|
if (Keyword == Ident_language) {
|
|
if (HadLanguage) {
|
|
Diag(KeywordLoc, diag::err_external_source_symbol_duplicate_clause)
|
|
<< Keyword;
|
|
ParseStringLiteralExpression();
|
|
continue;
|
|
}
|
|
Language = ParseStringLiteralExpression();
|
|
} else {
|
|
assert(Keyword == Ident_defined_in && "Invalid clause keyword!");
|
|
if (HadDefinedIn) {
|
|
Diag(KeywordLoc, diag::err_external_source_symbol_duplicate_clause)
|
|
<< Keyword;
|
|
ParseStringLiteralExpression();
|
|
continue;
|
|
}
|
|
DefinedInExpr = ParseStringLiteralExpression();
|
|
}
|
|
} while (TryConsumeToken(tok::comma));
|
|
|
|
// Closing ')'.
|
|
if (T.consumeClose())
|
|
return;
|
|
if (EndLoc)
|
|
*EndLoc = T.getCloseLocation();
|
|
|
|
ArgsUnion Args[] = {Language.get(), DefinedInExpr.get(),
|
|
GeneratedDeclaration};
|
|
Attrs.addNew(&ExternalSourceSymbol, SourceRange(Loc, T.getCloseLocation()),
|
|
ScopeName, ScopeLoc, Args, llvm::array_lengthof(Args), Syntax);
|
|
}
|
|
|
|
/// Parse the contents of the "objc_bridge_related" attribute.
|
|
/// objc_bridge_related '(' related_class ',' opt-class_method ',' opt-instance_method ')'
|
|
/// related_class:
|
|
/// Identifier
|
|
///
|
|
/// opt-class_method:
|
|
/// Identifier: | <empty>
|
|
///
|
|
/// opt-instance_method:
|
|
/// Identifier | <empty>
|
|
///
|
|
void Parser::ParseObjCBridgeRelatedAttribute(IdentifierInfo &ObjCBridgeRelated,
|
|
SourceLocation ObjCBridgeRelatedLoc,
|
|
ParsedAttributes &attrs,
|
|
SourceLocation *endLoc,
|
|
IdentifierInfo *ScopeName,
|
|
SourceLocation ScopeLoc,
|
|
ParsedAttr::Syntax Syntax) {
|
|
// Opening '('.
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.consumeOpen()) {
|
|
Diag(Tok, diag::err_expected) << tok::l_paren;
|
|
return;
|
|
}
|
|
|
|
// Parse the related class name.
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_objcbridge_related_expected_related_class);
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
IdentifierLoc *RelatedClass = ParseIdentifierLoc();
|
|
if (ExpectAndConsume(tok::comma)) {
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
// Parse class method name. It's non-optional in the sense that a trailing
|
|
// comma is required, but it can be the empty string, and then we record a
|
|
// nullptr.
|
|
IdentifierLoc *ClassMethod = nullptr;
|
|
if (Tok.is(tok::identifier)) {
|
|
ClassMethod = ParseIdentifierLoc();
|
|
if (!TryConsumeToken(tok::colon)) {
|
|
Diag(Tok, diag::err_objcbridge_related_selector_name);
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
}
|
|
if (!TryConsumeToken(tok::comma)) {
|
|
if (Tok.is(tok::colon))
|
|
Diag(Tok, diag::err_objcbridge_related_selector_name);
|
|
else
|
|
Diag(Tok, diag::err_expected) << tok::comma;
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
// Parse instance method name. Also non-optional but empty string is
|
|
// permitted.
|
|
IdentifierLoc *InstanceMethod = nullptr;
|
|
if (Tok.is(tok::identifier))
|
|
InstanceMethod = ParseIdentifierLoc();
|
|
else if (Tok.isNot(tok::r_paren)) {
|
|
Diag(Tok, diag::err_expected) << tok::r_paren;
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
// Closing ')'.
|
|
if (T.consumeClose())
|
|
return;
|
|
|
|
if (endLoc)
|
|
*endLoc = T.getCloseLocation();
|
|
|
|
// Record this attribute
|
|
attrs.addNew(&ObjCBridgeRelated,
|
|
SourceRange(ObjCBridgeRelatedLoc, T.getCloseLocation()),
|
|
ScopeName, ScopeLoc,
|
|
RelatedClass,
|
|
ClassMethod,
|
|
InstanceMethod,
|
|
Syntax);
|
|
}
|
|
|
|
// Late Parsed Attributes:
|
|
// See other examples of late parsing in lib/Parse/ParseCXXInlineMethods
|
|
|
|
void Parser::LateParsedDeclaration::ParseLexedAttributes() {}
|
|
|
|
void Parser::LateParsedClass::ParseLexedAttributes() {
|
|
Self->ParseLexedAttributes(*Class);
|
|
}
|
|
|
|
void Parser::LateParsedAttribute::ParseLexedAttributes() {
|
|
Self->ParseLexedAttribute(*this, true, false);
|
|
}
|
|
|
|
/// Wrapper class which calls ParseLexedAttribute, after setting up the
|
|
/// scope appropriately.
|
|
void Parser::ParseLexedAttributes(ParsingClass &Class) {
|
|
// Deal with templates
|
|
// FIXME: Test cases to make sure this does the right thing for templates.
|
|
bool HasTemplateScope = !Class.TopLevelClass && Class.TemplateScope;
|
|
ParseScope ClassTemplateScope(this, Scope::TemplateParamScope,
|
|
HasTemplateScope);
|
|
if (HasTemplateScope)
|
|
Actions.ActOnReenterTemplateScope(getCurScope(), Class.TagOrTemplate);
|
|
|
|
// Set or update the scope flags.
|
|
bool AlreadyHasClassScope = Class.TopLevelClass;
|
|
unsigned ScopeFlags = Scope::ClassScope|Scope::DeclScope;
|
|
ParseScope ClassScope(this, ScopeFlags, !AlreadyHasClassScope);
|
|
ParseScopeFlags ClassScopeFlags(this, ScopeFlags, AlreadyHasClassScope);
|
|
|
|
// Enter the scope of nested classes
|
|
if (!AlreadyHasClassScope)
|
|
Actions.ActOnStartDelayedMemberDeclarations(getCurScope(),
|
|
Class.TagOrTemplate);
|
|
if (!Class.LateParsedDeclarations.empty()) {
|
|
for (unsigned i = 0, ni = Class.LateParsedDeclarations.size(); i < ni; ++i){
|
|
Class.LateParsedDeclarations[i]->ParseLexedAttributes();
|
|
}
|
|
}
|
|
|
|
if (!AlreadyHasClassScope)
|
|
Actions.ActOnFinishDelayedMemberDeclarations(getCurScope(),
|
|
Class.TagOrTemplate);
|
|
}
|
|
|
|
/// Parse all attributes in LAs, and attach them to Decl D.
|
|
void Parser::ParseLexedAttributeList(LateParsedAttrList &LAs, Decl *D,
|
|
bool EnterScope, bool OnDefinition) {
|
|
assert(LAs.parseSoon() &&
|
|
"Attribute list should be marked for immediate parsing.");
|
|
for (unsigned i = 0, ni = LAs.size(); i < ni; ++i) {
|
|
if (D)
|
|
LAs[i]->addDecl(D);
|
|
ParseLexedAttribute(*LAs[i], EnterScope, OnDefinition);
|
|
delete LAs[i];
|
|
}
|
|
LAs.clear();
|
|
}
|
|
|
|
/// Finish parsing an attribute for which parsing was delayed.
|
|
/// This will be called at the end of parsing a class declaration
|
|
/// for each LateParsedAttribute. We consume the saved tokens and
|
|
/// create an attribute with the arguments filled in. We add this
|
|
/// to the Attribute list for the decl.
|
|
void Parser::ParseLexedAttribute(LateParsedAttribute &LA,
|
|
bool EnterScope, bool OnDefinition) {
|
|
// Create a fake EOF so that attribute parsing won't go off the end of the
|
|
// attribute.
|
|
Token AttrEnd;
|
|
AttrEnd.startToken();
|
|
AttrEnd.setKind(tok::eof);
|
|
AttrEnd.setLocation(Tok.getLocation());
|
|
AttrEnd.setEofData(LA.Toks.data());
|
|
LA.Toks.push_back(AttrEnd);
|
|
|
|
// Append the current token at the end of the new token stream so that it
|
|
// doesn't get lost.
|
|
LA.Toks.push_back(Tok);
|
|
PP.EnterTokenStream(LA.Toks, true);
|
|
// Consume the previously pushed token.
|
|
ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
|
|
|
|
ParsedAttributes Attrs(AttrFactory);
|
|
SourceLocation endLoc;
|
|
|
|
if (LA.Decls.size() > 0) {
|
|
Decl *D = LA.Decls[0];
|
|
NamedDecl *ND = dyn_cast<NamedDecl>(D);
|
|
RecordDecl *RD = dyn_cast_or_null<RecordDecl>(D->getDeclContext());
|
|
|
|
// Allow 'this' within late-parsed attributes.
|
|
Sema::CXXThisScopeRAII ThisScope(Actions, RD, Qualifiers(),
|
|
ND && ND->isCXXInstanceMember());
|
|
|
|
if (LA.Decls.size() == 1) {
|
|
// If the Decl is templatized, add template parameters to scope.
|
|
bool HasTemplateScope = EnterScope && D->isTemplateDecl();
|
|
ParseScope TempScope(this, Scope::TemplateParamScope, HasTemplateScope);
|
|
if (HasTemplateScope)
|
|
Actions.ActOnReenterTemplateScope(Actions.CurScope, D);
|
|
|
|
// If the Decl is on a function, add function parameters to the scope.
|
|
bool HasFunScope = EnterScope && D->isFunctionOrFunctionTemplate();
|
|
ParseScope FnScope(
|
|
this, Scope::FnScope | Scope::DeclScope | Scope::CompoundStmtScope,
|
|
HasFunScope);
|
|
if (HasFunScope)
|
|
Actions.ActOnReenterFunctionContext(Actions.CurScope, D);
|
|
|
|
ParseGNUAttributeArgs(&LA.AttrName, LA.AttrNameLoc, Attrs, &endLoc,
|
|
nullptr, SourceLocation(), ParsedAttr::AS_GNU,
|
|
nullptr);
|
|
|
|
if (HasFunScope) {
|
|
Actions.ActOnExitFunctionContext();
|
|
FnScope.Exit(); // Pop scope, and remove Decls from IdResolver
|
|
}
|
|
if (HasTemplateScope) {
|
|
TempScope.Exit();
|
|
}
|
|
} else {
|
|
// If there are multiple decls, then the decl cannot be within the
|
|
// function scope.
|
|
ParseGNUAttributeArgs(&LA.AttrName, LA.AttrNameLoc, Attrs, &endLoc,
|
|
nullptr, SourceLocation(), ParsedAttr::AS_GNU,
|
|
nullptr);
|
|
}
|
|
} else {
|
|
Diag(Tok, diag::warn_attribute_no_decl) << LA.AttrName.getName();
|
|
}
|
|
|
|
if (OnDefinition && !Attrs.empty() && !Attrs.begin()->isCXX11Attribute() &&
|
|
Attrs.begin()->isKnownToGCC())
|
|
Diag(Tok, diag::warn_attribute_on_function_definition)
|
|
<< &LA.AttrName;
|
|
|
|
for (unsigned i = 0, ni = LA.Decls.size(); i < ni; ++i)
|
|
Actions.ActOnFinishDelayedAttribute(getCurScope(), LA.Decls[i], Attrs);
|
|
|
|
// Due to a parsing error, we either went over the cached tokens or
|
|
// there are still cached tokens left, so we skip the leftover tokens.
|
|
while (Tok.isNot(tok::eof))
|
|
ConsumeAnyToken();
|
|
|
|
if (Tok.is(tok::eof) && Tok.getEofData() == AttrEnd.getEofData())
|
|
ConsumeAnyToken();
|
|
}
|
|
|
|
void Parser::ParseTypeTagForDatatypeAttribute(IdentifierInfo &AttrName,
|
|
SourceLocation AttrNameLoc,
|
|
ParsedAttributes &Attrs,
|
|
SourceLocation *EndLoc,
|
|
IdentifierInfo *ScopeName,
|
|
SourceLocation ScopeLoc,
|
|
ParsedAttr::Syntax Syntax) {
|
|
assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
T.consumeOpen();
|
|
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected) << tok::identifier;
|
|
T.skipToEnd();
|
|
return;
|
|
}
|
|
IdentifierLoc *ArgumentKind = ParseIdentifierLoc();
|
|
|
|
if (ExpectAndConsume(tok::comma)) {
|
|
T.skipToEnd();
|
|
return;
|
|
}
|
|
|
|
SourceRange MatchingCTypeRange;
|
|
TypeResult MatchingCType = ParseTypeName(&MatchingCTypeRange);
|
|
if (MatchingCType.isInvalid()) {
|
|
T.skipToEnd();
|
|
return;
|
|
}
|
|
|
|
bool LayoutCompatible = false;
|
|
bool MustBeNull = false;
|
|
while (TryConsumeToken(tok::comma)) {
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected) << tok::identifier;
|
|
T.skipToEnd();
|
|
return;
|
|
}
|
|
IdentifierInfo *Flag = Tok.getIdentifierInfo();
|
|
if (Flag->isStr("layout_compatible"))
|
|
LayoutCompatible = true;
|
|
else if (Flag->isStr("must_be_null"))
|
|
MustBeNull = true;
|
|
else {
|
|
Diag(Tok, diag::err_type_safety_unknown_flag) << Flag;
|
|
T.skipToEnd();
|
|
return;
|
|
}
|
|
ConsumeToken(); // consume flag
|
|
}
|
|
|
|
if (!T.consumeClose()) {
|
|
Attrs.addNewTypeTagForDatatype(&AttrName, AttrNameLoc, ScopeName, ScopeLoc,
|
|
ArgumentKind, MatchingCType.get(),
|
|
LayoutCompatible, MustBeNull, Syntax);
|
|
}
|
|
|
|
if (EndLoc)
|
|
*EndLoc = T.getCloseLocation();
|
|
}
|
|
|
|
/// DiagnoseProhibitedCXX11Attribute - We have found the opening square brackets
|
|
/// of a C++11 attribute-specifier in a location where an attribute is not
|
|
/// permitted. By C++11 [dcl.attr.grammar]p6, this is ill-formed. Diagnose this
|
|
/// situation.
|
|
///
|
|
/// \return \c true if we skipped an attribute-like chunk of tokens, \c false if
|
|
/// this doesn't appear to actually be an attribute-specifier, and the caller
|
|
/// should try to parse it.
|
|
bool Parser::DiagnoseProhibitedCXX11Attribute() {
|
|
assert(Tok.is(tok::l_square) && NextToken().is(tok::l_square));
|
|
|
|
switch (isCXX11AttributeSpecifier(/*Disambiguate*/true)) {
|
|
case CAK_NotAttributeSpecifier:
|
|
// No diagnostic: we're in Obj-C++11 and this is not actually an attribute.
|
|
return false;
|
|
|
|
case CAK_InvalidAttributeSpecifier:
|
|
Diag(Tok.getLocation(), diag::err_l_square_l_square_not_attribute);
|
|
return false;
|
|
|
|
case CAK_AttributeSpecifier:
|
|
// Parse and discard the attributes.
|
|
SourceLocation BeginLoc = ConsumeBracket();
|
|
ConsumeBracket();
|
|
SkipUntil(tok::r_square);
|
|
assert(Tok.is(tok::r_square) && "isCXX11AttributeSpecifier lied");
|
|
SourceLocation EndLoc = ConsumeBracket();
|
|
Diag(BeginLoc, diag::err_attributes_not_allowed)
|
|
<< SourceRange(BeginLoc, EndLoc);
|
|
return true;
|
|
}
|
|
llvm_unreachable("All cases handled above.");
|
|
}
|
|
|
|
/// We have found the opening square brackets of a C++11
|
|
/// attribute-specifier in a location where an attribute is not permitted, but
|
|
/// we know where the attributes ought to be written. Parse them anyway, and
|
|
/// provide a fixit moving them to the right place.
|
|
void Parser::DiagnoseMisplacedCXX11Attribute(ParsedAttributesWithRange &Attrs,
|
|
SourceLocation CorrectLocation) {
|
|
assert((Tok.is(tok::l_square) && NextToken().is(tok::l_square)) ||
|
|
Tok.is(tok::kw_alignas));
|
|
|
|
// Consume the attributes.
|
|
SourceLocation Loc = Tok.getLocation();
|
|
ParseCXX11Attributes(Attrs);
|
|
CharSourceRange AttrRange(SourceRange(Loc, Attrs.Range.getEnd()), true);
|
|
// FIXME: use err_attributes_misplaced
|
|
Diag(Loc, diag::err_attributes_not_allowed)
|
|
<< FixItHint::CreateInsertionFromRange(CorrectLocation, AttrRange)
|
|
<< FixItHint::CreateRemoval(AttrRange);
|
|
}
|
|
|
|
void Parser::DiagnoseProhibitedAttributes(
|
|
const SourceRange &Range, const SourceLocation CorrectLocation) {
|
|
if (CorrectLocation.isValid()) {
|
|
CharSourceRange AttrRange(Range, true);
|
|
Diag(CorrectLocation, diag::err_attributes_misplaced)
|
|
<< FixItHint::CreateInsertionFromRange(CorrectLocation, AttrRange)
|
|
<< FixItHint::CreateRemoval(AttrRange);
|
|
} else
|
|
Diag(Range.getBegin(), diag::err_attributes_not_allowed) << Range;
|
|
}
|
|
|
|
void Parser::ProhibitCXX11Attributes(ParsedAttributesWithRange &Attrs,
|
|
unsigned DiagID) {
|
|
for (const ParsedAttr &AL : Attrs) {
|
|
if (!AL.isCXX11Attribute() && !AL.isC2xAttribute())
|
|
continue;
|
|
if (AL.getKind() == ParsedAttr::UnknownAttribute)
|
|
Diag(AL.getLoc(), diag::warn_unknown_attribute_ignored) << AL.getName();
|
|
else {
|
|
Diag(AL.getLoc(), DiagID) << AL.getName();
|
|
AL.setInvalid();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Usually, `__attribute__((attrib)) class Foo {} var` means that attribute
|
|
// applies to var, not the type Foo.
|
|
// As an exception to the rule, __declspec(align(...)) before the
|
|
// class-key affects the type instead of the variable.
|
|
// Also, Microsoft-style [attributes] seem to affect the type instead of the
|
|
// variable.
|
|
// This function moves attributes that should apply to the type off DS to Attrs.
|
|
void Parser::stripTypeAttributesOffDeclSpec(ParsedAttributesWithRange &Attrs,
|
|
DeclSpec &DS,
|
|
Sema::TagUseKind TUK) {
|
|
if (TUK == Sema::TUK_Reference)
|
|
return;
|
|
|
|
llvm::SmallVector<ParsedAttr *, 1> ToBeMoved;
|
|
|
|
for (ParsedAttr &AL : DS.getAttributes()) {
|
|
if ((AL.getKind() == ParsedAttr::AT_Aligned &&
|
|
AL.isDeclspecAttribute()) ||
|
|
AL.isMicrosoftAttribute())
|
|
ToBeMoved.push_back(&AL);
|
|
}
|
|
|
|
for (ParsedAttr *AL : ToBeMoved) {
|
|
DS.getAttributes().remove(AL);
|
|
Attrs.addAtEnd(AL);
|
|
}
|
|
}
|
|
|
|
/// ParseDeclaration - Parse a full 'declaration', which consists of
|
|
/// declaration-specifiers, some number of declarators, and a semicolon.
|
|
/// 'Context' should be a DeclaratorContext value. This returns the
|
|
/// location of the semicolon in DeclEnd.
|
|
///
|
|
/// declaration: [C99 6.7]
|
|
/// block-declaration ->
|
|
/// simple-declaration
|
|
/// others [FIXME]
|
|
/// [C++] template-declaration
|
|
/// [C++] namespace-definition
|
|
/// [C++] using-directive
|
|
/// [C++] using-declaration
|
|
/// [C++11/C11] static_assert-declaration
|
|
/// others... [FIXME]
|
|
///
|
|
Parser::DeclGroupPtrTy Parser::ParseDeclaration(DeclaratorContext Context,
|
|
SourceLocation &DeclEnd,
|
|
ParsedAttributesWithRange &attrs) {
|
|
ParenBraceBracketBalancer BalancerRAIIObj(*this);
|
|
// Must temporarily exit the objective-c container scope for
|
|
// parsing c none objective-c decls.
|
|
ObjCDeclContextSwitch ObjCDC(*this);
|
|
|
|
Decl *SingleDecl = nullptr;
|
|
switch (Tok.getKind()) {
|
|
case tok::kw_template:
|
|
case tok::kw_export:
|
|
ProhibitAttributes(attrs);
|
|
SingleDecl = ParseDeclarationStartingWithTemplate(Context, DeclEnd, attrs);
|
|
break;
|
|
case tok::kw_inline:
|
|
// Could be the start of an inline namespace. Allowed as an ext in C++03.
|
|
if (getLangOpts().CPlusPlus && NextToken().is(tok::kw_namespace)) {
|
|
ProhibitAttributes(attrs);
|
|
SourceLocation InlineLoc = ConsumeToken();
|
|
return ParseNamespace(Context, DeclEnd, InlineLoc);
|
|
}
|
|
return ParseSimpleDeclaration(Context, DeclEnd, attrs,
|
|
true);
|
|
case tok::kw_namespace:
|
|
ProhibitAttributes(attrs);
|
|
return ParseNamespace(Context, DeclEnd);
|
|
case tok::kw_using:
|
|
return ParseUsingDirectiveOrDeclaration(Context, ParsedTemplateInfo(),
|
|
DeclEnd, attrs);
|
|
case tok::kw_static_assert:
|
|
case tok::kw__Static_assert:
|
|
ProhibitAttributes(attrs);
|
|
SingleDecl = ParseStaticAssertDeclaration(DeclEnd);
|
|
break;
|
|
default:
|
|
return ParseSimpleDeclaration(Context, DeclEnd, attrs, true);
|
|
}
|
|
|
|
// This routine returns a DeclGroup, if the thing we parsed only contains a
|
|
// single decl, convert it now.
|
|
return Actions.ConvertDeclToDeclGroup(SingleDecl);
|
|
}
|
|
|
|
/// simple-declaration: [C99 6.7: declaration] [C++ 7p1: dcl.dcl]
|
|
/// declaration-specifiers init-declarator-list[opt] ';'
|
|
/// [C++11] attribute-specifier-seq decl-specifier-seq[opt]
|
|
/// init-declarator-list ';'
|
|
///[C90/C++]init-declarator-list ';' [TODO]
|
|
/// [OMP] threadprivate-directive [TODO]
|
|
///
|
|
/// for-range-declaration: [C++11 6.5p1: stmt.ranged]
|
|
/// attribute-specifier-seq[opt] type-specifier-seq declarator
|
|
///
|
|
/// If RequireSemi is false, this does not check for a ';' at the end of the
|
|
/// declaration. If it is true, it checks for and eats it.
|
|
///
|
|
/// If FRI is non-null, we might be parsing a for-range-declaration instead
|
|
/// of a simple-declaration. If we find that we are, we also parse the
|
|
/// for-range-initializer, and place it here.
|
|
Parser::DeclGroupPtrTy
|
|
Parser::ParseSimpleDeclaration(DeclaratorContext Context,
|
|
SourceLocation &DeclEnd,
|
|
ParsedAttributesWithRange &Attrs,
|
|
bool RequireSemi, ForRangeInit *FRI) {
|
|
// Parse the common declaration-specifiers piece.
|
|
ParsingDeclSpec DS(*this);
|
|
|
|
DeclSpecContext DSContext = getDeclSpecContextFromDeclaratorContext(Context);
|
|
ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS_none, DSContext);
|
|
|
|
// If we had a free-standing type definition with a missing semicolon, we
|
|
// may get this far before the problem becomes obvious.
|
|
if (DS.hasTagDefinition() &&
|
|
DiagnoseMissingSemiAfterTagDefinition(DS, AS_none, DSContext))
|
|
return nullptr;
|
|
|
|
// C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };"
|
|
// declaration-specifiers init-declarator-list[opt] ';'
|
|
if (Tok.is(tok::semi)) {
|
|
ProhibitAttributes(Attrs);
|
|
DeclEnd = Tok.getLocation();
|
|
if (RequireSemi) ConsumeToken();
|
|
RecordDecl *AnonRecord = nullptr;
|
|
Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none,
|
|
DS, AnonRecord);
|
|
DS.complete(TheDecl);
|
|
if (AnonRecord) {
|
|
Decl* decls[] = {AnonRecord, TheDecl};
|
|
return Actions.BuildDeclaratorGroup(decls);
|
|
}
|
|
return Actions.ConvertDeclToDeclGroup(TheDecl);
|
|
}
|
|
|
|
DS.takeAttributesFrom(Attrs);
|
|
return ParseDeclGroup(DS, Context, &DeclEnd, FRI);
|
|
}
|
|
|
|
/// Returns true if this might be the start of a declarator, or a common typo
|
|
/// for a declarator.
|
|
bool Parser::MightBeDeclarator(DeclaratorContext Context) {
|
|
switch (Tok.getKind()) {
|
|
case tok::annot_cxxscope:
|
|
case tok::annot_template_id:
|
|
case tok::caret:
|
|
case tok::code_completion:
|
|
case tok::coloncolon:
|
|
case tok::ellipsis:
|
|
case tok::kw___attribute:
|
|
case tok::kw_operator:
|
|
case tok::l_paren:
|
|
case tok::star:
|
|
return true;
|
|
|
|
case tok::amp:
|
|
case tok::ampamp:
|
|
return getLangOpts().CPlusPlus;
|
|
|
|
case tok::l_square: // Might be an attribute on an unnamed bit-field.
|
|
return Context == DeclaratorContext::MemberContext &&
|
|
getLangOpts().CPlusPlus11 && NextToken().is(tok::l_square);
|
|
|
|
case tok::colon: // Might be a typo for '::' or an unnamed bit-field.
|
|
return Context == DeclaratorContext::MemberContext ||
|
|
getLangOpts().CPlusPlus;
|
|
|
|
case tok::identifier:
|
|
switch (NextToken().getKind()) {
|
|
case tok::code_completion:
|
|
case tok::coloncolon:
|
|
case tok::comma:
|
|
case tok::equal:
|
|
case tok::equalequal: // Might be a typo for '='.
|
|
case tok::kw_alignas:
|
|
case tok::kw_asm:
|
|
case tok::kw___attribute:
|
|
case tok::l_brace:
|
|
case tok::l_paren:
|
|
case tok::l_square:
|
|
case tok::less:
|
|
case tok::r_brace:
|
|
case tok::r_paren:
|
|
case tok::r_square:
|
|
case tok::semi:
|
|
return true;
|
|
|
|
case tok::colon:
|
|
// At namespace scope, 'identifier:' is probably a typo for 'identifier::'
|
|
// and in block scope it's probably a label. Inside a class definition,
|
|
// this is a bit-field.
|
|
return Context == DeclaratorContext::MemberContext ||
|
|
(getLangOpts().CPlusPlus &&
|
|
Context == DeclaratorContext::FileContext);
|
|
|
|
case tok::identifier: // Possible virt-specifier.
|
|
return getLangOpts().CPlusPlus11 && isCXX11VirtSpecifier(NextToken());
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/// Skip until we reach something which seems like a sensible place to pick
|
|
/// up parsing after a malformed declaration. This will sometimes stop sooner
|
|
/// than SkipUntil(tok::r_brace) would, but will never stop later.
|
|
void Parser::SkipMalformedDecl() {
|
|
while (true) {
|
|
switch (Tok.getKind()) {
|
|
case tok::l_brace:
|
|
// Skip until matching }, then stop. We've probably skipped over
|
|
// a malformed class or function definition or similar.
|
|
ConsumeBrace();
|
|
SkipUntil(tok::r_brace);
|
|
if (Tok.isOneOf(tok::comma, tok::l_brace, tok::kw_try)) {
|
|
// This declaration isn't over yet. Keep skipping.
|
|
continue;
|
|
}
|
|
TryConsumeToken(tok::semi);
|
|
return;
|
|
|
|
case tok::l_square:
|
|
ConsumeBracket();
|
|
SkipUntil(tok::r_square);
|
|
continue;
|
|
|
|
case tok::l_paren:
|
|
ConsumeParen();
|
|
SkipUntil(tok::r_paren);
|
|
continue;
|
|
|
|
case tok::r_brace:
|
|
return;
|
|
|
|
case tok::semi:
|
|
ConsumeToken();
|
|
return;
|
|
|
|
case tok::kw_inline:
|
|
// 'inline namespace' at the start of a line is almost certainly
|
|
// a good place to pick back up parsing, except in an Objective-C
|
|
// @interface context.
|
|
if (Tok.isAtStartOfLine() && NextToken().is(tok::kw_namespace) &&
|
|
(!ParsingInObjCContainer || CurParsedObjCImpl))
|
|
return;
|
|
break;
|
|
|
|
case tok::kw_namespace:
|
|
// 'namespace' at the start of a line is almost certainly a good
|
|
// place to pick back up parsing, except in an Objective-C
|
|
// @interface context.
|
|
if (Tok.isAtStartOfLine() &&
|
|
(!ParsingInObjCContainer || CurParsedObjCImpl))
|
|
return;
|
|
break;
|
|
|
|
case tok::at:
|
|
// @end is very much like } in Objective-C contexts.
|
|
if (NextToken().isObjCAtKeyword(tok::objc_end) &&
|
|
ParsingInObjCContainer)
|
|
return;
|
|
break;
|
|
|
|
case tok::minus:
|
|
case tok::plus:
|
|
// - and + probably start new method declarations in Objective-C contexts.
|
|
if (Tok.isAtStartOfLine() && ParsingInObjCContainer)
|
|
return;
|
|
break;
|
|
|
|
case tok::eof:
|
|
case tok::annot_module_begin:
|
|
case tok::annot_module_end:
|
|
case tok::annot_module_include:
|
|
return;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ConsumeAnyToken();
|
|
}
|
|
}
|
|
|
|
/// ParseDeclGroup - Having concluded that this is either a function
|
|
/// definition or a group of object declarations, actually parse the
|
|
/// result.
|
|
Parser::DeclGroupPtrTy Parser::ParseDeclGroup(ParsingDeclSpec &DS,
|
|
DeclaratorContext Context,
|
|
SourceLocation *DeclEnd,
|
|
ForRangeInit *FRI) {
|
|
// Parse the first declarator.
|
|
ParsingDeclarator D(*this, DS, Context);
|
|
ParseDeclarator(D);
|
|
|
|
// Bail out if the first declarator didn't seem well-formed.
|
|
if (!D.hasName() && !D.mayOmitIdentifier()) {
|
|
SkipMalformedDecl();
|
|
return nullptr;
|
|
}
|
|
|
|
// Save late-parsed attributes for now; they need to be parsed in the
|
|
// appropriate function scope after the function Decl has been constructed.
|
|
// These will be parsed in ParseFunctionDefinition or ParseLexedAttrList.
|
|
LateParsedAttrList LateParsedAttrs(true);
|
|
if (D.isFunctionDeclarator()) {
|
|
MaybeParseGNUAttributes(D, &LateParsedAttrs);
|
|
|
|
// The _Noreturn keyword can't appear here, unlike the GNU noreturn
|
|
// attribute. If we find the keyword here, tell the user to put it
|
|
// at the start instead.
|
|
if (Tok.is(tok::kw__Noreturn)) {
|
|
SourceLocation Loc = ConsumeToken();
|
|
const char *PrevSpec;
|
|
unsigned DiagID;
|
|
|
|
// We can offer a fixit if it's valid to mark this function as _Noreturn
|
|
// and we don't have any other declarators in this declaration.
|
|
bool Fixit = !DS.setFunctionSpecNoreturn(Loc, PrevSpec, DiagID);
|
|
MaybeParseGNUAttributes(D, &LateParsedAttrs);
|
|
Fixit &= Tok.isOneOf(tok::semi, tok::l_brace, tok::kw_try);
|
|
|
|
Diag(Loc, diag::err_c11_noreturn_misplaced)
|
|
<< (Fixit ? FixItHint::CreateRemoval(Loc) : FixItHint())
|
|
<< (Fixit ? FixItHint::CreateInsertion(D.getBeginLoc(), "_Noreturn ")
|
|
: FixItHint());
|
|
}
|
|
}
|
|
|
|
// Check to see if we have a function *definition* which must have a body.
|
|
if (D.isFunctionDeclarator() &&
|
|
// Look at the next token to make sure that this isn't a function
|
|
// declaration. We have to check this because __attribute__ might be the
|
|
// start of a function definition in GCC-extended K&R C.
|
|
!isDeclarationAfterDeclarator()) {
|
|
|
|
// Function definitions are only allowed at file scope and in C++ classes.
|
|
// The C++ inline method definition case is handled elsewhere, so we only
|
|
// need to handle the file scope definition case.
|
|
if (Context == DeclaratorContext::FileContext) {
|
|
if (isStartOfFunctionDefinition(D)) {
|
|
if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
|
|
Diag(Tok, diag::err_function_declared_typedef);
|
|
|
|
// Recover by treating the 'typedef' as spurious.
|
|
DS.ClearStorageClassSpecs();
|
|
}
|
|
|
|
Decl *TheDecl =
|
|
ParseFunctionDefinition(D, ParsedTemplateInfo(), &LateParsedAttrs);
|
|
return Actions.ConvertDeclToDeclGroup(TheDecl);
|
|
}
|
|
|
|
if (isDeclarationSpecifier()) {
|
|
// If there is an invalid declaration specifier right after the
|
|
// function prototype, then we must be in a missing semicolon case
|
|
// where this isn't actually a body. Just fall through into the code
|
|
// that handles it as a prototype, and let the top-level code handle
|
|
// the erroneous declspec where it would otherwise expect a comma or
|
|
// semicolon.
|
|
} else {
|
|
Diag(Tok, diag::err_expected_fn_body);
|
|
SkipUntil(tok::semi);
|
|
return nullptr;
|
|
}
|
|
} else {
|
|
if (Tok.is(tok::l_brace)) {
|
|
Diag(Tok, diag::err_function_definition_not_allowed);
|
|
SkipMalformedDecl();
|
|
return nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ParseAsmAttributesAfterDeclarator(D))
|
|
return nullptr;
|
|
|
|
// C++0x [stmt.iter]p1: Check if we have a for-range-declarator. If so, we
|
|
// must parse and analyze the for-range-initializer before the declaration is
|
|
// analyzed.
|
|
//
|
|
// Handle the Objective-C for-in loop variable similarly, although we
|
|
// don't need to parse the container in advance.
|
|
if (FRI && (Tok.is(tok::colon) || isTokIdentifier_in())) {
|
|
bool IsForRangeLoop = false;
|
|
if (TryConsumeToken(tok::colon, FRI->ColonLoc)) {
|
|
IsForRangeLoop = true;
|
|
if (Tok.is(tok::l_brace))
|
|
FRI->RangeExpr = ParseBraceInitializer();
|
|
else
|
|
FRI->RangeExpr = ParseExpression();
|
|
}
|
|
|
|
Decl *ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
|
|
if (IsForRangeLoop) {
|
|
Actions.ActOnCXXForRangeDecl(ThisDecl);
|
|
} else {
|
|
// Obj-C for loop
|
|
if (auto *VD = dyn_cast_or_null<VarDecl>(ThisDecl))
|
|
VD->setObjCForDecl(true);
|
|
}
|
|
Actions.FinalizeDeclaration(ThisDecl);
|
|
D.complete(ThisDecl);
|
|
return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, ThisDecl);
|
|
}
|
|
|
|
SmallVector<Decl *, 8> DeclsInGroup;
|
|
Decl *FirstDecl = ParseDeclarationAfterDeclaratorAndAttributes(
|
|
D, ParsedTemplateInfo(), FRI);
|
|
if (LateParsedAttrs.size() > 0)
|
|
ParseLexedAttributeList(LateParsedAttrs, FirstDecl, true, false);
|
|
D.complete(FirstDecl);
|
|
if (FirstDecl)
|
|
DeclsInGroup.push_back(FirstDecl);
|
|
|
|
bool ExpectSemi = Context != DeclaratorContext::ForContext;
|
|
|
|
// If we don't have a comma, it is either the end of the list (a ';') or an
|
|
// error, bail out.
|
|
SourceLocation CommaLoc;
|
|
while (TryConsumeToken(tok::comma, CommaLoc)) {
|
|
if (Tok.isAtStartOfLine() && ExpectSemi && !MightBeDeclarator(Context)) {
|
|
// This comma was followed by a line-break and something which can't be
|
|
// the start of a declarator. The comma was probably a typo for a
|
|
// semicolon.
|
|
Diag(CommaLoc, diag::err_expected_semi_declaration)
|
|
<< FixItHint::CreateReplacement(CommaLoc, ";");
|
|
ExpectSemi = false;
|
|
break;
|
|
}
|
|
|
|
// Parse the next declarator.
|
|
D.clear();
|
|
D.setCommaLoc(CommaLoc);
|
|
|
|
// Accept attributes in an init-declarator. In the first declarator in a
|
|
// declaration, these would be part of the declspec. In subsequent
|
|
// declarators, they become part of the declarator itself, so that they
|
|
// don't apply to declarators after *this* one. Examples:
|
|
// short __attribute__((common)) var; -> declspec
|
|
// short var __attribute__((common)); -> declarator
|
|
// short x, __attribute__((common)) var; -> declarator
|
|
MaybeParseGNUAttributes(D);
|
|
|
|
// MSVC parses but ignores qualifiers after the comma as an extension.
|
|
if (getLangOpts().MicrosoftExt)
|
|
DiagnoseAndSkipExtendedMicrosoftTypeAttributes();
|
|
|
|
ParseDeclarator(D);
|
|
if (!D.isInvalidType()) {
|
|
Decl *ThisDecl = ParseDeclarationAfterDeclarator(D);
|
|
D.complete(ThisDecl);
|
|
if (ThisDecl)
|
|
DeclsInGroup.push_back(ThisDecl);
|
|
}
|
|
}
|
|
|
|
if (DeclEnd)
|
|
*DeclEnd = Tok.getLocation();
|
|
|
|
if (ExpectSemi &&
|
|
ExpectAndConsumeSemi(Context == DeclaratorContext::FileContext
|
|
? diag::err_invalid_token_after_toplevel_declarator
|
|
: diag::err_expected_semi_declaration)) {
|
|
// Okay, there was no semicolon and one was expected. If we see a
|
|
// declaration specifier, just assume it was missing and continue parsing.
|
|
// Otherwise things are very confused and we skip to recover.
|
|
if (!isDeclarationSpecifier()) {
|
|
SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
|
|
TryConsumeToken(tok::semi);
|
|
}
|
|
}
|
|
|
|
return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, DeclsInGroup);
|
|
}
|
|
|
|
/// Parse an optional simple-asm-expr and attributes, and attach them to a
|
|
/// declarator. Returns true on an error.
|
|
bool Parser::ParseAsmAttributesAfterDeclarator(Declarator &D) {
|
|
// If a simple-asm-expr is present, parse it.
|
|
if (Tok.is(tok::kw_asm)) {
|
|
SourceLocation Loc;
|
|
ExprResult AsmLabel(ParseSimpleAsm(&Loc));
|
|
if (AsmLabel.isInvalid()) {
|
|
SkipUntil(tok::semi, StopBeforeMatch);
|
|
return true;
|
|
}
|
|
|
|
D.setAsmLabel(AsmLabel.get());
|
|
D.SetRangeEnd(Loc);
|
|
}
|
|
|
|
MaybeParseGNUAttributes(D);
|
|
return false;
|
|
}
|
|
|
|
/// Parse 'declaration' after parsing 'declaration-specifiers
|
|
/// declarator'. This method parses the remainder of the declaration
|
|
/// (including any attributes or initializer, among other things) and
|
|
/// finalizes the declaration.
|
|
///
|
|
/// init-declarator: [C99 6.7]
|
|
/// declarator
|
|
/// declarator '=' initializer
|
|
/// [GNU] declarator simple-asm-expr[opt] attributes[opt]
|
|
/// [GNU] declarator simple-asm-expr[opt] attributes[opt] '=' initializer
|
|
/// [C++] declarator initializer[opt]
|
|
///
|
|
/// [C++] initializer:
|
|
/// [C++] '=' initializer-clause
|
|
/// [C++] '(' expression-list ')'
|
|
/// [C++0x] '=' 'default' [TODO]
|
|
/// [C++0x] '=' 'delete'
|
|
/// [C++0x] braced-init-list
|
|
///
|
|
/// According to the standard grammar, =default and =delete are function
|
|
/// definitions, but that definitely doesn't fit with the parser here.
|
|
///
|
|
Decl *Parser::ParseDeclarationAfterDeclarator(
|
|
Declarator &D, const ParsedTemplateInfo &TemplateInfo) {
|
|
if (ParseAsmAttributesAfterDeclarator(D))
|
|
return nullptr;
|
|
|
|
return ParseDeclarationAfterDeclaratorAndAttributes(D, TemplateInfo);
|
|
}
|
|
|
|
Decl *Parser::ParseDeclarationAfterDeclaratorAndAttributes(
|
|
Declarator &D, const ParsedTemplateInfo &TemplateInfo, ForRangeInit *FRI) {
|
|
// RAII type used to track whether we're inside an initializer.
|
|
struct InitializerScopeRAII {
|
|
Parser &P;
|
|
Declarator &D;
|
|
Decl *ThisDecl;
|
|
|
|
InitializerScopeRAII(Parser &P, Declarator &D, Decl *ThisDecl)
|
|
: P(P), D(D), ThisDecl(ThisDecl) {
|
|
if (ThisDecl && P.getLangOpts().CPlusPlus) {
|
|
Scope *S = nullptr;
|
|
if (D.getCXXScopeSpec().isSet()) {
|
|
P.EnterScope(0);
|
|
S = P.getCurScope();
|
|
}
|
|
P.Actions.ActOnCXXEnterDeclInitializer(S, ThisDecl);
|
|
}
|
|
}
|
|
~InitializerScopeRAII() { pop(); }
|
|
void pop() {
|
|
if (ThisDecl && P.getLangOpts().CPlusPlus) {
|
|
Scope *S = nullptr;
|
|
if (D.getCXXScopeSpec().isSet())
|
|
S = P.getCurScope();
|
|
P.Actions.ActOnCXXExitDeclInitializer(S, ThisDecl);
|
|
if (S)
|
|
P.ExitScope();
|
|
}
|
|
ThisDecl = nullptr;
|
|
}
|
|
};
|
|
|
|
// Inform the current actions module that we just parsed this declarator.
|
|
Decl *ThisDecl = nullptr;
|
|
switch (TemplateInfo.Kind) {
|
|
case ParsedTemplateInfo::NonTemplate:
|
|
ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
|
|
break;
|
|
|
|
case ParsedTemplateInfo::Template:
|
|
case ParsedTemplateInfo::ExplicitSpecialization: {
|
|
ThisDecl = Actions.ActOnTemplateDeclarator(getCurScope(),
|
|
*TemplateInfo.TemplateParams,
|
|
D);
|
|
if (VarTemplateDecl *VT = dyn_cast_or_null<VarTemplateDecl>(ThisDecl))
|
|
// Re-direct this decl to refer to the templated decl so that we can
|
|
// initialize it.
|
|
ThisDecl = VT->getTemplatedDecl();
|
|
break;
|
|
}
|
|
case ParsedTemplateInfo::ExplicitInstantiation: {
|
|
if (Tok.is(tok::semi)) {
|
|
DeclResult ThisRes = Actions.ActOnExplicitInstantiation(
|
|
getCurScope(), TemplateInfo.ExternLoc, TemplateInfo.TemplateLoc, D);
|
|
if (ThisRes.isInvalid()) {
|
|
SkipUntil(tok::semi, StopBeforeMatch);
|
|
return nullptr;
|
|
}
|
|
ThisDecl = ThisRes.get();
|
|
} else {
|
|
// FIXME: This check should be for a variable template instantiation only.
|
|
|
|
// Check that this is a valid instantiation
|
|
if (D.getName().getKind() != UnqualifiedIdKind::IK_TemplateId) {
|
|
// If the declarator-id is not a template-id, issue a diagnostic and
|
|
// recover by ignoring the 'template' keyword.
|
|
Diag(Tok, diag::err_template_defn_explicit_instantiation)
|
|
<< 2 << FixItHint::CreateRemoval(TemplateInfo.TemplateLoc);
|
|
ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
|
|
} else {
|
|
SourceLocation LAngleLoc =
|
|
PP.getLocForEndOfToken(TemplateInfo.TemplateLoc);
|
|
Diag(D.getIdentifierLoc(),
|
|
diag::err_explicit_instantiation_with_definition)
|
|
<< SourceRange(TemplateInfo.TemplateLoc)
|
|
<< FixItHint::CreateInsertion(LAngleLoc, "<>");
|
|
|
|
// Recover as if it were an explicit specialization.
|
|
TemplateParameterLists FakedParamLists;
|
|
FakedParamLists.push_back(Actions.ActOnTemplateParameterList(
|
|
0, SourceLocation(), TemplateInfo.TemplateLoc, LAngleLoc, None,
|
|
LAngleLoc, nullptr));
|
|
|
|
ThisDecl =
|
|
Actions.ActOnTemplateDeclarator(getCurScope(), FakedParamLists, D);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Parse declarator '=' initializer.
|
|
// If a '==' or '+=' is found, suggest a fixit to '='.
|
|
if (isTokenEqualOrEqualTypo()) {
|
|
SourceLocation EqualLoc = ConsumeToken();
|
|
|
|
if (Tok.is(tok::kw_delete)) {
|
|
if (D.isFunctionDeclarator())
|
|
Diag(ConsumeToken(), diag::err_default_delete_in_multiple_declaration)
|
|
<< 1 /* delete */;
|
|
else
|
|
Diag(ConsumeToken(), diag::err_deleted_non_function);
|
|
} else if (Tok.is(tok::kw_default)) {
|
|
if (D.isFunctionDeclarator())
|
|
Diag(ConsumeToken(), diag::err_default_delete_in_multiple_declaration)
|
|
<< 0 /* default */;
|
|
else
|
|
Diag(ConsumeToken(), diag::err_default_special_members);
|
|
} else {
|
|
InitializerScopeRAII InitScope(*this, D, ThisDecl);
|
|
|
|
if (Tok.is(tok::code_completion)) {
|
|
Actions.CodeCompleteInitializer(getCurScope(), ThisDecl);
|
|
Actions.FinalizeDeclaration(ThisDecl);
|
|
cutOffParsing();
|
|
return nullptr;
|
|
}
|
|
|
|
ExprResult Init(ParseInitializer());
|
|
|
|
// If this is the only decl in (possibly) range based for statement,
|
|
// our best guess is that the user meant ':' instead of '='.
|
|
if (Tok.is(tok::r_paren) && FRI && D.isFirstDeclarator()) {
|
|
Diag(EqualLoc, diag::err_single_decl_assign_in_for_range)
|
|
<< FixItHint::CreateReplacement(EqualLoc, ":");
|
|
// We are trying to stop parser from looking for ';' in this for
|
|
// statement, therefore preventing spurious errors to be issued.
|
|
FRI->ColonLoc = EqualLoc;
|
|
Init = ExprError();
|
|
FRI->RangeExpr = Init;
|
|
}
|
|
|
|
InitScope.pop();
|
|
|
|
if (Init.isInvalid()) {
|
|
SmallVector<tok::TokenKind, 2> StopTokens;
|
|
StopTokens.push_back(tok::comma);
|
|
if (D.getContext() == DeclaratorContext::ForContext ||
|
|
D.getContext() == DeclaratorContext::InitStmtContext)
|
|
StopTokens.push_back(tok::r_paren);
|
|
SkipUntil(StopTokens, StopAtSemi | StopBeforeMatch);
|
|
Actions.ActOnInitializerError(ThisDecl);
|
|
} else
|
|
Actions.AddInitializerToDecl(ThisDecl, Init.get(),
|
|
/*DirectInit=*/false);
|
|
}
|
|
} else if (Tok.is(tok::l_paren)) {
|
|
// Parse C++ direct initializer: '(' expression-list ')'
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
T.consumeOpen();
|
|
|
|
ExprVector Exprs;
|
|
CommaLocsTy CommaLocs;
|
|
|
|
InitializerScopeRAII InitScope(*this, D, ThisDecl);
|
|
|
|
llvm::function_ref<void()> ExprListCompleter;
|
|
auto ThisVarDecl = dyn_cast_or_null<VarDecl>(ThisDecl);
|
|
auto ConstructorCompleter = [&, ThisVarDecl] {
|
|
QualType PreferredType = Actions.ProduceConstructorSignatureHelp(
|
|
getCurScope(), ThisVarDecl->getType()->getCanonicalTypeInternal(),
|
|
ThisDecl->getLocation(), Exprs, T.getOpenLocation());
|
|
CalledSignatureHelp = true;
|
|
Actions.CodeCompleteExpression(getCurScope(), PreferredType);
|
|
};
|
|
if (ThisVarDecl) {
|
|
// ParseExpressionList can sometimes succeed even when ThisDecl is not
|
|
// VarDecl. This is an error and it is reported in a call to
|
|
// Actions.ActOnInitializerError(). However, we call
|
|
// ProduceConstructorSignatureHelp only on VarDecls, falling back to
|
|
// default completer in other cases.
|
|
ExprListCompleter = ConstructorCompleter;
|
|
}
|
|
|
|
if (ParseExpressionList(Exprs, CommaLocs, ExprListCompleter)) {
|
|
if (ThisVarDecl && PP.isCodeCompletionReached() && !CalledSignatureHelp) {
|
|
Actions.ProduceConstructorSignatureHelp(
|
|
getCurScope(), ThisVarDecl->getType()->getCanonicalTypeInternal(),
|
|
ThisDecl->getLocation(), Exprs, T.getOpenLocation());
|
|
CalledSignatureHelp = true;
|
|
}
|
|
Actions.ActOnInitializerError(ThisDecl);
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
} else {
|
|
// Match the ')'.
|
|
T.consumeClose();
|
|
|
|
assert(!Exprs.empty() && Exprs.size()-1 == CommaLocs.size() &&
|
|
"Unexpected number of commas!");
|
|
|
|
InitScope.pop();
|
|
|
|
ExprResult Initializer = Actions.ActOnParenListExpr(T.getOpenLocation(),
|
|
T.getCloseLocation(),
|
|
Exprs);
|
|
Actions.AddInitializerToDecl(ThisDecl, Initializer.get(),
|
|
/*DirectInit=*/true);
|
|
}
|
|
} else if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace) &&
|
|
(!CurParsedObjCImpl || !D.isFunctionDeclarator())) {
|
|
// Parse C++0x braced-init-list.
|
|
Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
|
|
|
|
InitializerScopeRAII InitScope(*this, D, ThisDecl);
|
|
|
|
ExprResult Init(ParseBraceInitializer());
|
|
|
|
InitScope.pop();
|
|
|
|
if (Init.isInvalid()) {
|
|
Actions.ActOnInitializerError(ThisDecl);
|
|
} else
|
|
Actions.AddInitializerToDecl(ThisDecl, Init.get(), /*DirectInit=*/true);
|
|
|
|
} else {
|
|
Actions.ActOnUninitializedDecl(ThisDecl);
|
|
}
|
|
|
|
Actions.FinalizeDeclaration(ThisDecl);
|
|
|
|
return ThisDecl;
|
|
}
|
|
|
|
/// ParseSpecifierQualifierList
|
|
/// specifier-qualifier-list:
|
|
/// type-specifier specifier-qualifier-list[opt]
|
|
/// type-qualifier specifier-qualifier-list[opt]
|
|
/// [GNU] attributes specifier-qualifier-list[opt]
|
|
///
|
|
void Parser::ParseSpecifierQualifierList(DeclSpec &DS, AccessSpecifier AS,
|
|
DeclSpecContext DSC) {
|
|
/// specifier-qualifier-list is a subset of declaration-specifiers. Just
|
|
/// parse declaration-specifiers and complain about extra stuff.
|
|
/// TODO: diagnose attribute-specifiers and alignment-specifiers.
|
|
ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS, DSC);
|
|
|
|
// Validate declspec for type-name.
|
|
unsigned Specs = DS.getParsedSpecifiers();
|
|
if (isTypeSpecifier(DSC) && !DS.hasTypeSpecifier()) {
|
|
Diag(Tok, diag::err_expected_type);
|
|
DS.SetTypeSpecError();
|
|
} else if (Specs == DeclSpec::PQ_None && !DS.hasAttributes()) {
|
|
Diag(Tok, diag::err_typename_requires_specqual);
|
|
if (!DS.hasTypeSpecifier())
|
|
DS.SetTypeSpecError();
|
|
}
|
|
|
|
// Issue diagnostic and remove storage class if present.
|
|
if (Specs & DeclSpec::PQ_StorageClassSpecifier) {
|
|
if (DS.getStorageClassSpecLoc().isValid())
|
|
Diag(DS.getStorageClassSpecLoc(),diag::err_typename_invalid_storageclass);
|
|
else
|
|
Diag(DS.getThreadStorageClassSpecLoc(),
|
|
diag::err_typename_invalid_storageclass);
|
|
DS.ClearStorageClassSpecs();
|
|
}
|
|
|
|
// Issue diagnostic and remove function specifier if present.
|
|
if (Specs & DeclSpec::PQ_FunctionSpecifier) {
|
|
if (DS.isInlineSpecified())
|
|
Diag(DS.getInlineSpecLoc(), diag::err_typename_invalid_functionspec);
|
|
if (DS.isVirtualSpecified())
|
|
Diag(DS.getVirtualSpecLoc(), diag::err_typename_invalid_functionspec);
|
|
if (DS.isExplicitSpecified())
|
|
Diag(DS.getExplicitSpecLoc(), diag::err_typename_invalid_functionspec);
|
|
DS.ClearFunctionSpecs();
|
|
}
|
|
|
|
// Issue diagnostic and remove constexpr specfier if present.
|
|
if (DS.isConstexprSpecified() && DSC != DeclSpecContext::DSC_condition) {
|
|
Diag(DS.getConstexprSpecLoc(), diag::err_typename_invalid_constexpr);
|
|
DS.ClearConstexprSpec();
|
|
}
|
|
}
|
|
|
|
/// isValidAfterIdentifierInDeclaratorAfterDeclSpec - Return true if the
|
|
/// specified token is valid after the identifier in a declarator which
|
|
/// immediately follows the declspec. For example, these things are valid:
|
|
///
|
|
/// int x [ 4]; // direct-declarator
|
|
/// int x ( int y); // direct-declarator
|
|
/// int(int x ) // direct-declarator
|
|
/// int x ; // simple-declaration
|
|
/// int x = 17; // init-declarator-list
|
|
/// int x , y; // init-declarator-list
|
|
/// int x __asm__ ("foo"); // init-declarator-list
|
|
/// int x : 4; // struct-declarator
|
|
/// int x { 5}; // C++'0x unified initializers
|
|
///
|
|
/// This is not, because 'x' does not immediately follow the declspec (though
|
|
/// ')' happens to be valid anyway).
|
|
/// int (x)
|
|
///
|
|
static bool isValidAfterIdentifierInDeclarator(const Token &T) {
|
|
return T.isOneOf(tok::l_square, tok::l_paren, tok::r_paren, tok::semi,
|
|
tok::comma, tok::equal, tok::kw_asm, tok::l_brace,
|
|
tok::colon);
|
|
}
|
|
|
|
/// ParseImplicitInt - This method is called when we have an non-typename
|
|
/// identifier in a declspec (which normally terminates the decl spec) when
|
|
/// the declspec has no type specifier. In this case, the declspec is either
|
|
/// malformed or is "implicit int" (in K&R and C89).
|
|
///
|
|
/// This method handles diagnosing this prettily and returns false if the
|
|
/// declspec is done being processed. If it recovers and thinks there may be
|
|
/// other pieces of declspec after it, it returns true.
|
|
///
|
|
bool Parser::ParseImplicitInt(DeclSpec &DS, CXXScopeSpec *SS,
|
|
const ParsedTemplateInfo &TemplateInfo,
|
|
AccessSpecifier AS, DeclSpecContext DSC,
|
|
ParsedAttributesWithRange &Attrs) {
|
|
assert(Tok.is(tok::identifier) && "should have identifier");
|
|
|
|
SourceLocation Loc = Tok.getLocation();
|
|
// If we see an identifier that is not a type name, we normally would
|
|
// parse it as the identifier being declared. However, when a typename
|
|
// is typo'd or the definition is not included, this will incorrectly
|
|
// parse the typename as the identifier name and fall over misparsing
|
|
// later parts of the diagnostic.
|
|
//
|
|
// As such, we try to do some look-ahead in cases where this would
|
|
// otherwise be an "implicit-int" case to see if this is invalid. For
|
|
// example: "static foo_t x = 4;" In this case, if we parsed foo_t as
|
|
// an identifier with implicit int, we'd get a parse error because the
|
|
// next token is obviously invalid for a type. Parse these as a case
|
|
// with an invalid type specifier.
|
|
assert(!DS.hasTypeSpecifier() && "Type specifier checked above");
|
|
|
|
// Since we know that this either implicit int (which is rare) or an
|
|
// error, do lookahead to try to do better recovery. This never applies
|
|
// within a type specifier. Outside of C++, we allow this even if the
|
|
// language doesn't "officially" support implicit int -- we support
|
|
// implicit int as an extension in C99 and C11.
|
|
if (!isTypeSpecifier(DSC) && !getLangOpts().CPlusPlus &&
|
|
isValidAfterIdentifierInDeclarator(NextToken())) {
|
|
// If this token is valid for implicit int, e.g. "static x = 4", then
|
|
// we just avoid eating the identifier, so it will be parsed as the
|
|
// identifier in the declarator.
|
|
return false;
|
|
}
|
|
|
|
if (getLangOpts().CPlusPlus &&
|
|
DS.getStorageClassSpec() == DeclSpec::SCS_auto) {
|
|
// Don't require a type specifier if we have the 'auto' storage class
|
|
// specifier in C++98 -- we'll promote it to a type specifier.
|
|
if (SS)
|
|
AnnotateScopeToken(*SS, /*IsNewAnnotation*/false);
|
|
return false;
|
|
}
|
|
|
|
if (getLangOpts().CPlusPlus && (!SS || SS->isEmpty()) &&
|
|
getLangOpts().MSVCCompat) {
|
|
// Lookup of an unqualified type name has failed in MSVC compatibility mode.
|
|
// Give Sema a chance to recover if we are in a template with dependent base
|
|
// classes.
|
|
if (ParsedType T = Actions.ActOnMSVCUnknownTypeName(
|
|
*Tok.getIdentifierInfo(), Tok.getLocation(),
|
|
DSC == DeclSpecContext::DSC_template_type_arg)) {
|
|
const char *PrevSpec;
|
|
unsigned DiagID;
|
|
DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, DiagID, T,
|
|
Actions.getASTContext().getPrintingPolicy());
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Otherwise, if we don't consume this token, we are going to emit an
|
|
// error anyway. Try to recover from various common problems. Check
|
|
// to see if this was a reference to a tag name without a tag specified.
|
|
// This is a common problem in C (saying 'foo' instead of 'struct foo').
|
|
//
|
|
// C++ doesn't need this, and isTagName doesn't take SS.
|
|
if (SS == nullptr) {
|
|
const char *TagName = nullptr, *FixitTagName = nullptr;
|
|
tok::TokenKind TagKind = tok::unknown;
|
|
|
|
switch (Actions.isTagName(*Tok.getIdentifierInfo(), getCurScope())) {
|
|
default: break;
|
|
case DeclSpec::TST_enum:
|
|
TagName="enum" ; FixitTagName = "enum " ; TagKind=tok::kw_enum ;break;
|
|
case DeclSpec::TST_union:
|
|
TagName="union" ; FixitTagName = "union " ;TagKind=tok::kw_union ;break;
|
|
case DeclSpec::TST_struct:
|
|
TagName="struct"; FixitTagName = "struct ";TagKind=tok::kw_struct;break;
|
|
case DeclSpec::TST_interface:
|
|
TagName="__interface"; FixitTagName = "__interface ";
|
|
TagKind=tok::kw___interface;break;
|
|
case DeclSpec::TST_class:
|
|
TagName="class" ; FixitTagName = "class " ;TagKind=tok::kw_class ;break;
|
|
}
|
|
|
|
if (TagName) {
|
|
IdentifierInfo *TokenName = Tok.getIdentifierInfo();
|
|
LookupResult R(Actions, TokenName, SourceLocation(),
|
|
Sema::LookupOrdinaryName);
|
|
|
|
Diag(Loc, diag::err_use_of_tag_name_without_tag)
|
|
<< TokenName << TagName << getLangOpts().CPlusPlus
|
|
<< FixItHint::CreateInsertion(Tok.getLocation(), FixitTagName);
|
|
|
|
if (Actions.LookupParsedName(R, getCurScope(), SS)) {
|
|
for (LookupResult::iterator I = R.begin(), IEnd = R.end();
|
|
I != IEnd; ++I)
|
|
Diag((*I)->getLocation(), diag::note_decl_hiding_tag_type)
|
|
<< TokenName << TagName;
|
|
}
|
|
|
|
// Parse this as a tag as if the missing tag were present.
|
|
if (TagKind == tok::kw_enum)
|
|
ParseEnumSpecifier(Loc, DS, TemplateInfo, AS,
|
|
DeclSpecContext::DSC_normal);
|
|
else
|
|
ParseClassSpecifier(TagKind, Loc, DS, TemplateInfo, AS,
|
|
/*EnteringContext*/ false,
|
|
DeclSpecContext::DSC_normal, Attrs);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Determine whether this identifier could plausibly be the name of something
|
|
// being declared (with a missing type).
|
|
if (!isTypeSpecifier(DSC) && (!SS || DSC == DeclSpecContext::DSC_top_level ||
|
|
DSC == DeclSpecContext::DSC_class)) {
|
|
// Look ahead to the next token to try to figure out what this declaration
|
|
// was supposed to be.
|
|
switch (NextToken().getKind()) {
|
|
case tok::l_paren: {
|
|
// static x(4); // 'x' is not a type
|
|
// x(int n); // 'x' is not a type
|
|
// x (*p)[]; // 'x' is a type
|
|
//
|
|
// Since we're in an error case, we can afford to perform a tentative
|
|
// parse to determine which case we're in.
|
|
TentativeParsingAction PA(*this);
|
|
ConsumeToken();
|
|
TPResult TPR = TryParseDeclarator(/*mayBeAbstract*/false);
|
|
PA.Revert();
|
|
|
|
if (TPR != TPResult::False) {
|
|
// The identifier is followed by a parenthesized declarator.
|
|
// It's supposed to be a type.
|
|
break;
|
|
}
|
|
|
|
// If we're in a context where we could be declaring a constructor,
|
|
// check whether this is a constructor declaration with a bogus name.
|
|
if (DSC == DeclSpecContext::DSC_class ||
|
|
(DSC == DeclSpecContext::DSC_top_level && SS)) {
|
|
IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
if (Actions.isCurrentClassNameTypo(II, SS)) {
|
|
Diag(Loc, diag::err_constructor_bad_name)
|
|
<< Tok.getIdentifierInfo() << II
|
|
<< FixItHint::CreateReplacement(Tok.getLocation(), II->getName());
|
|
Tok.setIdentifierInfo(II);
|
|
}
|
|
}
|
|
// Fall through.
|
|
LLVM_FALLTHROUGH;
|
|
}
|
|
case tok::comma:
|
|
case tok::equal:
|
|
case tok::kw_asm:
|
|
case tok::l_brace:
|
|
case tok::l_square:
|
|
case tok::semi:
|
|
// This looks like a variable or function declaration. The type is
|
|
// probably missing. We're done parsing decl-specifiers.
|
|
if (SS)
|
|
AnnotateScopeToken(*SS, /*IsNewAnnotation*/false);
|
|
return false;
|
|
|
|
default:
|
|
// This is probably supposed to be a type. This includes cases like:
|
|
// int f(itn);
|
|
// struct S { unsinged : 4; };
|
|
break;
|
|
}
|
|
}
|
|
|
|
// This is almost certainly an invalid type name. Let Sema emit a diagnostic
|
|
// and attempt to recover.
|
|
ParsedType T;
|
|
IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
bool IsTemplateName = getLangOpts().CPlusPlus && NextToken().is(tok::less);
|
|
Actions.DiagnoseUnknownTypeName(II, Loc, getCurScope(), SS, T,
|
|
IsTemplateName);
|
|
if (T) {
|
|
// The action has suggested that the type T could be used. Set that as
|
|
// the type in the declaration specifiers, consume the would-be type
|
|
// name token, and we're done.
|
|
const char *PrevSpec;
|
|
unsigned DiagID;
|
|
DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec, DiagID, T,
|
|
Actions.getASTContext().getPrintingPolicy());
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken();
|
|
// There may be other declaration specifiers after this.
|
|
return true;
|
|
} else if (II != Tok.getIdentifierInfo()) {
|
|
// If no type was suggested, the correction is to a keyword
|
|
Tok.setKind(II->getTokenID());
|
|
// There may be other declaration specifiers after this.
|
|
return true;
|
|
}
|
|
|
|
// Otherwise, the action had no suggestion for us. Mark this as an error.
|
|
DS.SetTypeSpecError();
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken();
|
|
|
|
// Eat any following template arguments.
|
|
if (IsTemplateName) {
|
|
SourceLocation LAngle, RAngle;
|
|
TemplateArgList Args;
|
|
ParseTemplateIdAfterTemplateName(true, LAngle, Args, RAngle);
|
|
}
|
|
|
|
// TODO: Could inject an invalid typedef decl in an enclosing scope to
|
|
// avoid rippling error messages on subsequent uses of the same type,
|
|
// could be useful if #include was forgotten.
|
|
return false;
|
|
}
|
|
|
|
/// Determine the declaration specifier context from the declarator
|
|
/// context.
|
|
///
|
|
/// \param Context the declarator context, which is one of the
|
|
/// DeclaratorContext enumerator values.
|
|
Parser::DeclSpecContext
|
|
Parser::getDeclSpecContextFromDeclaratorContext(DeclaratorContext Context) {
|
|
if (Context == DeclaratorContext::MemberContext)
|
|
return DeclSpecContext::DSC_class;
|
|
if (Context == DeclaratorContext::FileContext)
|
|
return DeclSpecContext::DSC_top_level;
|
|
if (Context == DeclaratorContext::TemplateParamContext)
|
|
return DeclSpecContext::DSC_template_param;
|
|
if (Context == DeclaratorContext::TemplateArgContext ||
|
|
Context == DeclaratorContext::TemplateTypeArgContext)
|
|
return DeclSpecContext::DSC_template_type_arg;
|
|
if (Context == DeclaratorContext::TrailingReturnContext ||
|
|
Context == DeclaratorContext::TrailingReturnVarContext)
|
|
return DeclSpecContext::DSC_trailing;
|
|
if (Context == DeclaratorContext::AliasDeclContext ||
|
|
Context == DeclaratorContext::AliasTemplateContext)
|
|
return DeclSpecContext::DSC_alias_declaration;
|
|
return DeclSpecContext::DSC_normal;
|
|
}
|
|
|
|
/// ParseAlignArgument - Parse the argument to an alignment-specifier.
|
|
///
|
|
/// FIXME: Simply returns an alignof() expression if the argument is a
|
|
/// type. Ideally, the type should be propagated directly into Sema.
|
|
///
|
|
/// [C11] type-id
|
|
/// [C11] constant-expression
|
|
/// [C++0x] type-id ...[opt]
|
|
/// [C++0x] assignment-expression ...[opt]
|
|
ExprResult Parser::ParseAlignArgument(SourceLocation Start,
|
|
SourceLocation &EllipsisLoc) {
|
|
ExprResult ER;
|
|
if (isTypeIdInParens()) {
|
|
SourceLocation TypeLoc = Tok.getLocation();
|
|
ParsedType Ty = ParseTypeName().get();
|
|
SourceRange TypeRange(Start, Tok.getLocation());
|
|
ER = Actions.ActOnUnaryExprOrTypeTraitExpr(TypeLoc, UETT_AlignOf, true,
|
|
Ty.getAsOpaquePtr(), TypeRange);
|
|
} else
|
|
ER = ParseConstantExpression();
|
|
|
|
if (getLangOpts().CPlusPlus11)
|
|
TryConsumeToken(tok::ellipsis, EllipsisLoc);
|
|
|
|
return ER;
|
|
}
|
|
|
|
/// ParseAlignmentSpecifier - Parse an alignment-specifier, and add the
|
|
/// attribute to Attrs.
|
|
///
|
|
/// alignment-specifier:
|
|
/// [C11] '_Alignas' '(' type-id ')'
|
|
/// [C11] '_Alignas' '(' constant-expression ')'
|
|
/// [C++11] 'alignas' '(' type-id ...[opt] ')'
|
|
/// [C++11] 'alignas' '(' assignment-expression ...[opt] ')'
|
|
void Parser::ParseAlignmentSpecifier(ParsedAttributes &Attrs,
|
|
SourceLocation *EndLoc) {
|
|
assert(Tok.isOneOf(tok::kw_alignas, tok::kw__Alignas) &&
|
|
"Not an alignment-specifier!");
|
|
|
|
IdentifierInfo *KWName = Tok.getIdentifierInfo();
|
|
SourceLocation KWLoc = ConsumeToken();
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.expectAndConsume())
|
|
return;
|
|
|
|
SourceLocation EllipsisLoc;
|
|
ExprResult ArgExpr = ParseAlignArgument(T.getOpenLocation(), EllipsisLoc);
|
|
if (ArgExpr.isInvalid()) {
|
|
T.skipToEnd();
|
|
return;
|
|
}
|
|
|
|
T.consumeClose();
|
|
if (EndLoc)
|
|
*EndLoc = T.getCloseLocation();
|
|
|
|
ArgsVector ArgExprs;
|
|
ArgExprs.push_back(ArgExpr.get());
|
|
Attrs.addNew(KWName, KWLoc, nullptr, KWLoc, ArgExprs.data(), 1,
|
|
ParsedAttr::AS_Keyword, EllipsisLoc);
|
|
}
|
|
|
|
/// Determine whether we're looking at something that might be a declarator
|
|
/// in a simple-declaration. If it can't possibly be a declarator, maybe
|
|
/// diagnose a missing semicolon after a prior tag definition in the decl
|
|
/// specifier.
|
|
///
|
|
/// \return \c true if an error occurred and this can't be any kind of
|
|
/// declaration.
|
|
bool
|
|
Parser::DiagnoseMissingSemiAfterTagDefinition(DeclSpec &DS, AccessSpecifier AS,
|
|
DeclSpecContext DSContext,
|
|
LateParsedAttrList *LateAttrs) {
|
|
assert(DS.hasTagDefinition() && "shouldn't call this");
|
|
|
|
bool EnteringContext = (DSContext == DeclSpecContext::DSC_class ||
|
|
DSContext == DeclSpecContext::DSC_top_level);
|
|
|
|
if (getLangOpts().CPlusPlus &&
|
|
Tok.isOneOf(tok::identifier, tok::coloncolon, tok::kw_decltype,
|
|
tok::annot_template_id) &&
|
|
TryAnnotateCXXScopeToken(EnteringContext)) {
|
|
SkipMalformedDecl();
|
|
return true;
|
|
}
|
|
|
|
bool HasScope = Tok.is(tok::annot_cxxscope);
|
|
// Make a copy in case GetLookAheadToken invalidates the result of NextToken.
|
|
Token AfterScope = HasScope ? NextToken() : Tok;
|
|
|
|
// Determine whether the following tokens could possibly be a
|
|
// declarator.
|
|
bool MightBeDeclarator = true;
|
|
if (Tok.isOneOf(tok::kw_typename, tok::annot_typename)) {
|
|
// A declarator-id can't start with 'typename'.
|
|
MightBeDeclarator = false;
|
|
} else if (AfterScope.is(tok::annot_template_id)) {
|
|
// If we have a type expressed as a template-id, this cannot be a
|
|
// declarator-id (such a type cannot be redeclared in a simple-declaration).
|
|
TemplateIdAnnotation *Annot =
|
|
static_cast<TemplateIdAnnotation *>(AfterScope.getAnnotationValue());
|
|
if (Annot->Kind == TNK_Type_template)
|
|
MightBeDeclarator = false;
|
|
} else if (AfterScope.is(tok::identifier)) {
|
|
const Token &Next = HasScope ? GetLookAheadToken(2) : NextToken();
|
|
|
|
// These tokens cannot come after the declarator-id in a
|
|
// simple-declaration, and are likely to come after a type-specifier.
|
|
if (Next.isOneOf(tok::star, tok::amp, tok::ampamp, tok::identifier,
|
|
tok::annot_cxxscope, tok::coloncolon)) {
|
|
// Missing a semicolon.
|
|
MightBeDeclarator = false;
|
|
} else if (HasScope) {
|
|
// If the declarator-id has a scope specifier, it must redeclare a
|
|
// previously-declared entity. If that's a type (and this is not a
|
|
// typedef), that's an error.
|
|
CXXScopeSpec SS;
|
|
Actions.RestoreNestedNameSpecifierAnnotation(
|
|
Tok.getAnnotationValue(), Tok.getAnnotationRange(), SS);
|
|
IdentifierInfo *Name = AfterScope.getIdentifierInfo();
|
|
Sema::NameClassification Classification = Actions.ClassifyName(
|
|
getCurScope(), SS, Name, AfterScope.getLocation(), Next,
|
|
/*IsAddressOfOperand*/false);
|
|
switch (Classification.getKind()) {
|
|
case Sema::NC_Error:
|
|
SkipMalformedDecl();
|
|
return true;
|
|
|
|
case Sema::NC_Keyword:
|
|
case Sema::NC_NestedNameSpecifier:
|
|
llvm_unreachable("typo correction and nested name specifiers not "
|
|
"possible here");
|
|
|
|
case Sema::NC_Type:
|
|
case Sema::NC_TypeTemplate:
|
|
// Not a previously-declared non-type entity.
|
|
MightBeDeclarator = false;
|
|
break;
|
|
|
|
case Sema::NC_Unknown:
|
|
case Sema::NC_Expression:
|
|
case Sema::NC_VarTemplate:
|
|
case Sema::NC_FunctionTemplate:
|
|
// Might be a redeclaration of a prior entity.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (MightBeDeclarator)
|
|
return false;
|
|
|
|
const PrintingPolicy &PPol = Actions.getASTContext().getPrintingPolicy();
|
|
Diag(PP.getLocForEndOfToken(DS.getRepAsDecl()->getEndLoc()),
|
|
diag::err_expected_after)
|
|
<< DeclSpec::getSpecifierName(DS.getTypeSpecType(), PPol) << tok::semi;
|
|
|
|
// Try to recover from the typo, by dropping the tag definition and parsing
|
|
// the problematic tokens as a type.
|
|
//
|
|
// FIXME: Split the DeclSpec into pieces for the standalone
|
|
// declaration and pieces for the following declaration, instead
|
|
// of assuming that all the other pieces attach to new declaration,
|
|
// and call ParsedFreeStandingDeclSpec as appropriate.
|
|
DS.ClearTypeSpecType();
|
|
ParsedTemplateInfo NotATemplate;
|
|
ParseDeclarationSpecifiers(DS, NotATemplate, AS, DSContext, LateAttrs);
|
|
return false;
|
|
}
|
|
|
|
// Choose the apprpriate diagnostic error for why fixed point types are
|
|
// disabled, set the previous specifier, and mark as invalid.
|
|
static void SetupFixedPointError(const LangOptions &LangOpts,
|
|
const char *&PrevSpec, unsigned &DiagID,
|
|
bool &isInvalid) {
|
|
assert(!LangOpts.FixedPoint);
|
|
DiagID = diag::err_fixed_point_not_enabled;
|
|
PrevSpec = ""; // Not used by diagnostic
|
|
isInvalid = true;
|
|
}
|
|
|
|
/// ParseDeclarationSpecifiers
|
|
/// declaration-specifiers: [C99 6.7]
|
|
/// storage-class-specifier declaration-specifiers[opt]
|
|
/// type-specifier declaration-specifiers[opt]
|
|
/// [C99] function-specifier declaration-specifiers[opt]
|
|
/// [C11] alignment-specifier declaration-specifiers[opt]
|
|
/// [GNU] attributes declaration-specifiers[opt]
|
|
/// [Clang] '__module_private__' declaration-specifiers[opt]
|
|
/// [ObjC1] '__kindof' declaration-specifiers[opt]
|
|
///
|
|
/// storage-class-specifier: [C99 6.7.1]
|
|
/// 'typedef'
|
|
/// 'extern'
|
|
/// 'static'
|
|
/// 'auto'
|
|
/// 'register'
|
|
/// [C++] 'mutable'
|
|
/// [C++11] 'thread_local'
|
|
/// [C11] '_Thread_local'
|
|
/// [GNU] '__thread'
|
|
/// function-specifier: [C99 6.7.4]
|
|
/// [C99] 'inline'
|
|
/// [C++] 'virtual'
|
|
/// [C++] 'explicit'
|
|
/// [OpenCL] '__kernel'
|
|
/// 'friend': [C++ dcl.friend]
|
|
/// 'constexpr': [C++0x dcl.constexpr]
|
|
void Parser::ParseDeclarationSpecifiers(DeclSpec &DS,
|
|
const ParsedTemplateInfo &TemplateInfo,
|
|
AccessSpecifier AS,
|
|
DeclSpecContext DSContext,
|
|
LateParsedAttrList *LateAttrs) {
|
|
if (DS.getSourceRange().isInvalid()) {
|
|
// Start the range at the current token but make the end of the range
|
|
// invalid. This will make the entire range invalid unless we successfully
|
|
// consume a token.
|
|
DS.SetRangeStart(Tok.getLocation());
|
|
DS.SetRangeEnd(SourceLocation());
|
|
}
|
|
|
|
bool EnteringContext = (DSContext == DeclSpecContext::DSC_class ||
|
|
DSContext == DeclSpecContext::DSC_top_level);
|
|
bool AttrsLastTime = false;
|
|
ParsedAttributesWithRange attrs(AttrFactory);
|
|
// We use Sema's policy to get bool macros right.
|
|
PrintingPolicy Policy = Actions.getPrintingPolicy();
|
|
while (1) {
|
|
bool isInvalid = false;
|
|
bool isStorageClass = false;
|
|
const char *PrevSpec = nullptr;
|
|
unsigned DiagID = 0;
|
|
|
|
// HACK: MSVC doesn't consider _Atomic to be a keyword and its STL
|
|
// implementation for VS2013 uses _Atomic as an identifier for one of the
|
|
// classes in <atomic>.
|
|
//
|
|
// A typedef declaration containing _Atomic<...> is among the places where
|
|
// the class is used. If we are currently parsing such a declaration, treat
|
|
// the token as an identifier.
|
|
if (getLangOpts().MSVCCompat && Tok.is(tok::kw__Atomic) &&
|
|
DS.getStorageClassSpec() == clang::DeclSpec::SCS_typedef &&
|
|
!DS.hasTypeSpecifier() && GetLookAheadToken(1).is(tok::less))
|
|
Tok.setKind(tok::identifier);
|
|
|
|
SourceLocation Loc = Tok.getLocation();
|
|
|
|
switch (Tok.getKind()) {
|
|
default:
|
|
DoneWithDeclSpec:
|
|
if (!AttrsLastTime)
|
|
ProhibitAttributes(attrs);
|
|
else {
|
|
// Reject C++11 attributes that appertain to decl specifiers as
|
|
// we don't support any C++11 attributes that appertain to decl
|
|
// specifiers. This also conforms to what g++ 4.8 is doing.
|
|
ProhibitCXX11Attributes(attrs, diag::err_attribute_not_type_attr);
|
|
|
|
DS.takeAttributesFrom(attrs);
|
|
}
|
|
|
|
// If this is not a declaration specifier token, we're done reading decl
|
|
// specifiers. First verify that DeclSpec's are consistent.
|
|
DS.Finish(Actions, Policy);
|
|
return;
|
|
|
|
case tok::l_square:
|
|
case tok::kw_alignas:
|
|
if (!standardAttributesAllowed() || !isCXX11AttributeSpecifier())
|
|
goto DoneWithDeclSpec;
|
|
|
|
ProhibitAttributes(attrs);
|
|
// FIXME: It would be good to recover by accepting the attributes,
|
|
// but attempting to do that now would cause serious
|
|
// madness in terms of diagnostics.
|
|
attrs.clear();
|
|
attrs.Range = SourceRange();
|
|
|
|
ParseCXX11Attributes(attrs);
|
|
AttrsLastTime = true;
|
|
continue;
|
|
|
|
case tok::code_completion: {
|
|
Sema::ParserCompletionContext CCC = Sema::PCC_Namespace;
|
|
if (DS.hasTypeSpecifier()) {
|
|
bool AllowNonIdentifiers
|
|
= (getCurScope()->getFlags() & (Scope::ControlScope |
|
|
Scope::BlockScope |
|
|
Scope::TemplateParamScope |
|
|
Scope::FunctionPrototypeScope |
|
|
Scope::AtCatchScope)) == 0;
|
|
bool AllowNestedNameSpecifiers
|
|
= DSContext == DeclSpecContext::DSC_top_level ||
|
|
(DSContext == DeclSpecContext::DSC_class && DS.isFriendSpecified());
|
|
|
|
Actions.CodeCompleteDeclSpec(getCurScope(), DS,
|
|
AllowNonIdentifiers,
|
|
AllowNestedNameSpecifiers);
|
|
return cutOffParsing();
|
|
}
|
|
|
|
if (getCurScope()->getFnParent() || getCurScope()->getBlockParent())
|
|
CCC = Sema::PCC_LocalDeclarationSpecifiers;
|
|
else if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate)
|
|
CCC = DSContext == DeclSpecContext::DSC_class ? Sema::PCC_MemberTemplate
|
|
: Sema::PCC_Template;
|
|
else if (DSContext == DeclSpecContext::DSC_class)
|
|
CCC = Sema::PCC_Class;
|
|
else if (CurParsedObjCImpl)
|
|
CCC = Sema::PCC_ObjCImplementation;
|
|
|
|
Actions.CodeCompleteOrdinaryName(getCurScope(), CCC);
|
|
return cutOffParsing();
|
|
}
|
|
|
|
case tok::coloncolon: // ::foo::bar
|
|
// C++ scope specifier. Annotate and loop, or bail out on error.
|
|
if (TryAnnotateCXXScopeToken(EnteringContext)) {
|
|
if (!DS.hasTypeSpecifier())
|
|
DS.SetTypeSpecError();
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
if (Tok.is(tok::coloncolon)) // ::new or ::delete
|
|
goto DoneWithDeclSpec;
|
|
continue;
|
|
|
|
case tok::annot_cxxscope: {
|
|
if (DS.hasTypeSpecifier() || DS.isTypeAltiVecVector())
|
|
goto DoneWithDeclSpec;
|
|
|
|
CXXScopeSpec SS;
|
|
Actions.RestoreNestedNameSpecifierAnnotation(Tok.getAnnotationValue(),
|
|
Tok.getAnnotationRange(),
|
|
SS);
|
|
|
|
// We are looking for a qualified typename.
|
|
Token Next = NextToken();
|
|
if (Next.is(tok::annot_template_id) &&
|
|
static_cast<TemplateIdAnnotation *>(Next.getAnnotationValue())
|
|
->Kind == TNK_Type_template) {
|
|
// We have a qualified template-id, e.g., N::A<int>
|
|
|
|
// If this would be a valid constructor declaration with template
|
|
// arguments, we will reject the attempt to form an invalid type-id
|
|
// referring to the injected-class-name when we annotate the token,
|
|
// per C++ [class.qual]p2.
|
|
//
|
|
// To improve diagnostics for this case, parse the declaration as a
|
|
// constructor (and reject the extra template arguments later).
|
|
TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Next);
|
|
if ((DSContext == DeclSpecContext::DSC_top_level ||
|
|
DSContext == DeclSpecContext::DSC_class) &&
|
|
TemplateId->Name &&
|
|
Actions.isCurrentClassName(*TemplateId->Name, getCurScope(), &SS) &&
|
|
isConstructorDeclarator(/*Unqualified*/ false)) {
|
|
// The user meant this to be an out-of-line constructor
|
|
// definition, but template arguments are not allowed
|
|
// there. Just allow this as a constructor; we'll
|
|
// complain about it later.
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
|
|
DS.getTypeSpecScope() = SS;
|
|
ConsumeAnnotationToken(); // The C++ scope.
|
|
assert(Tok.is(tok::annot_template_id) &&
|
|
"ParseOptionalCXXScopeSpecifier not working");
|
|
AnnotateTemplateIdTokenAsType();
|
|
continue;
|
|
}
|
|
|
|
if (Next.is(tok::annot_typename)) {
|
|
DS.getTypeSpecScope() = SS;
|
|
ConsumeAnnotationToken(); // The C++ scope.
|
|
if (Tok.getAnnotationValue()) {
|
|
ParsedType T = getTypeAnnotation(Tok);
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename,
|
|
Tok.getAnnotationEndLoc(),
|
|
PrevSpec, DiagID, T, Policy);
|
|
if (isInvalid)
|
|
break;
|
|
}
|
|
else
|
|
DS.SetTypeSpecError();
|
|
DS.SetRangeEnd(Tok.getAnnotationEndLoc());
|
|
ConsumeAnnotationToken(); // The typename
|
|
}
|
|
|
|
if (Next.isNot(tok::identifier))
|
|
goto DoneWithDeclSpec;
|
|
|
|
// Check whether this is a constructor declaration. If we're in a
|
|
// context where the identifier could be a class name, and it has the
|
|
// shape of a constructor declaration, process it as one.
|
|
if ((DSContext == DeclSpecContext::DSC_top_level ||
|
|
DSContext == DeclSpecContext::DSC_class) &&
|
|
Actions.isCurrentClassName(*Next.getIdentifierInfo(), getCurScope(),
|
|
&SS) &&
|
|
isConstructorDeclarator(/*Unqualified*/ false))
|
|
goto DoneWithDeclSpec;
|
|
|
|
ParsedType TypeRep =
|
|
Actions.getTypeName(*Next.getIdentifierInfo(), Next.getLocation(),
|
|
getCurScope(), &SS, false, false, nullptr,
|
|
/*IsCtorOrDtorName=*/false,
|
|
/*WantNonTrivialSourceInfo=*/true,
|
|
isClassTemplateDeductionContext(DSContext));
|
|
|
|
// If the referenced identifier is not a type, then this declspec is
|
|
// erroneous: We already checked about that it has no type specifier, and
|
|
// C++ doesn't have implicit int. Diagnose it as a typo w.r.t. to the
|
|
// typename.
|
|
if (!TypeRep) {
|
|
// Eat the scope spec so the identifier is current.
|
|
ConsumeAnnotationToken();
|
|
ParsedAttributesWithRange Attrs(AttrFactory);
|
|
if (ParseImplicitInt(DS, &SS, TemplateInfo, AS, DSContext, Attrs)) {
|
|
if (!Attrs.empty()) {
|
|
AttrsLastTime = true;
|
|
attrs.takeAllFrom(Attrs);
|
|
}
|
|
continue;
|
|
}
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
|
|
DS.getTypeSpecScope() = SS;
|
|
ConsumeAnnotationToken(); // The C++ scope.
|
|
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
|
|
DiagID, TypeRep, Policy);
|
|
if (isInvalid)
|
|
break;
|
|
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken(); // The typename.
|
|
|
|
continue;
|
|
}
|
|
|
|
case tok::annot_typename: {
|
|
// If we've previously seen a tag definition, we were almost surely
|
|
// missing a semicolon after it.
|
|
if (DS.hasTypeSpecifier() && DS.hasTagDefinition())
|
|
goto DoneWithDeclSpec;
|
|
|
|
if (Tok.getAnnotationValue()) {
|
|
ParsedType T = getTypeAnnotation(Tok);
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
|
|
DiagID, T, Policy);
|
|
} else
|
|
DS.SetTypeSpecError();
|
|
|
|
if (isInvalid)
|
|
break;
|
|
|
|
DS.SetRangeEnd(Tok.getAnnotationEndLoc());
|
|
ConsumeAnnotationToken(); // The typename
|
|
|
|
continue;
|
|
}
|
|
|
|
case tok::kw___is_signed:
|
|
// GNU libstdc++ 4.4 uses __is_signed as an identifier, but Clang
|
|
// typically treats it as a trait. If we see __is_signed as it appears
|
|
// in libstdc++, e.g.,
|
|
//
|
|
// static const bool __is_signed;
|
|
//
|
|
// then treat __is_signed as an identifier rather than as a keyword.
|
|
if (DS.getTypeSpecType() == TST_bool &&
|
|
DS.getTypeQualifiers() == DeclSpec::TQ_const &&
|
|
DS.getStorageClassSpec() == DeclSpec::SCS_static)
|
|
TryKeywordIdentFallback(true);
|
|
|
|
// We're done with the declaration-specifiers.
|
|
goto DoneWithDeclSpec;
|
|
|
|
// typedef-name
|
|
case tok::kw___super:
|
|
case tok::kw_decltype:
|
|
case tok::identifier: {
|
|
// This identifier can only be a typedef name if we haven't already seen
|
|
// a type-specifier. Without this check we misparse:
|
|
// typedef int X; struct Y { short X; }; as 'short int'.
|
|
if (DS.hasTypeSpecifier())
|
|
goto DoneWithDeclSpec;
|
|
|
|
// If the token is an identifier named "__declspec" and Microsoft
|
|
// extensions are not enabled, it is likely that there will be cascading
|
|
// parse errors if this really is a __declspec attribute. Attempt to
|
|
// recognize that scenario and recover gracefully.
|
|
if (!getLangOpts().DeclSpecKeyword && Tok.is(tok::identifier) &&
|
|
Tok.getIdentifierInfo()->getName().equals("__declspec")) {
|
|
Diag(Loc, diag::err_ms_attributes_not_enabled);
|
|
|
|
// The next token should be an open paren. If it is, eat the entire
|
|
// attribute declaration and continue.
|
|
if (NextToken().is(tok::l_paren)) {
|
|
// Consume the __declspec identifier.
|
|
ConsumeToken();
|
|
|
|
// Eat the parens and everything between them.
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.consumeOpen()) {
|
|
assert(false && "Not a left paren?");
|
|
return;
|
|
}
|
|
T.skipToEnd();
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// In C++, check to see if this is a scope specifier like foo::bar::, if
|
|
// so handle it as such. This is important for ctor parsing.
|
|
if (getLangOpts().CPlusPlus) {
|
|
if (TryAnnotateCXXScopeToken(EnteringContext)) {
|
|
DS.SetTypeSpecError();
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
if (!Tok.is(tok::identifier))
|
|
continue;
|
|
}
|
|
|
|
// Check for need to substitute AltiVec keyword tokens.
|
|
if (TryAltiVecToken(DS, Loc, PrevSpec, DiagID, isInvalid))
|
|
break;
|
|
|
|
// [AltiVec] 2.2: [If the 'vector' specifier is used] The syntax does not
|
|
// allow the use of a typedef name as a type specifier.
|
|
if (DS.isTypeAltiVecVector())
|
|
goto DoneWithDeclSpec;
|
|
|
|
if (DSContext == DeclSpecContext::DSC_objc_method_result &&
|
|
isObjCInstancetype()) {
|
|
ParsedType TypeRep = Actions.ActOnObjCInstanceType(Loc);
|
|
assert(TypeRep);
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
|
|
DiagID, TypeRep, Policy);
|
|
if (isInvalid)
|
|
break;
|
|
|
|
DS.SetRangeEnd(Loc);
|
|
ConsumeToken();
|
|
continue;
|
|
}
|
|
|
|
// If we're in a context where the identifier could be a class name,
|
|
// check whether this is a constructor declaration.
|
|
if (getLangOpts().CPlusPlus && DSContext == DeclSpecContext::DSC_class &&
|
|
Actions.isCurrentClassName(*Tok.getIdentifierInfo(), getCurScope()) &&
|
|
isConstructorDeclarator(/*Unqualified*/true))
|
|
goto DoneWithDeclSpec;
|
|
|
|
ParsedType TypeRep = Actions.getTypeName(
|
|
*Tok.getIdentifierInfo(), Tok.getLocation(), getCurScope(), nullptr,
|
|
false, false, nullptr, false, false,
|
|
isClassTemplateDeductionContext(DSContext));
|
|
|
|
// If this is not a typedef name, don't parse it as part of the declspec,
|
|
// it must be an implicit int or an error.
|
|
if (!TypeRep) {
|
|
ParsedAttributesWithRange Attrs(AttrFactory);
|
|
if (ParseImplicitInt(DS, nullptr, TemplateInfo, AS, DSContext, Attrs)) {
|
|
if (!Attrs.empty()) {
|
|
AttrsLastTime = true;
|
|
attrs.takeAllFrom(Attrs);
|
|
}
|
|
continue;
|
|
}
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
|
|
// Likewise, if this is a context where the identifier could be a template
|
|
// name, check whether this is a deduction guide declaration.
|
|
if (getLangOpts().CPlusPlus17 &&
|
|
(DSContext == DeclSpecContext::DSC_class ||
|
|
DSContext == DeclSpecContext::DSC_top_level) &&
|
|
Actions.isDeductionGuideName(getCurScope(), *Tok.getIdentifierInfo(),
|
|
Tok.getLocation()) &&
|
|
isConstructorDeclarator(/*Unqualified*/ true,
|
|
/*DeductionGuide*/ true))
|
|
goto DoneWithDeclSpec;
|
|
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
|
|
DiagID, TypeRep, Policy);
|
|
if (isInvalid)
|
|
break;
|
|
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken(); // The identifier
|
|
|
|
// Objective-C supports type arguments and protocol references
|
|
// following an Objective-C object or object pointer
|
|
// type. Handle either one of them.
|
|
if (Tok.is(tok::less) && getLangOpts().ObjC) {
|
|
SourceLocation NewEndLoc;
|
|
TypeResult NewTypeRep = parseObjCTypeArgsAndProtocolQualifiers(
|
|
Loc, TypeRep, /*consumeLastToken=*/true,
|
|
NewEndLoc);
|
|
if (NewTypeRep.isUsable()) {
|
|
DS.UpdateTypeRep(NewTypeRep.get());
|
|
DS.SetRangeEnd(NewEndLoc);
|
|
}
|
|
}
|
|
|
|
// Need to support trailing type qualifiers (e.g. "id<p> const").
|
|
// If a type specifier follows, it will be diagnosed elsewhere.
|
|
continue;
|
|
}
|
|
|
|
// type-name
|
|
case tok::annot_template_id: {
|
|
TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
|
|
if (TemplateId->Kind != TNK_Type_template) {
|
|
// This template-id does not refer to a type name, so we're
|
|
// done with the type-specifiers.
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
|
|
// If we're in a context where the template-id could be a
|
|
// constructor name or specialization, check whether this is a
|
|
// constructor declaration.
|
|
if (getLangOpts().CPlusPlus && DSContext == DeclSpecContext::DSC_class &&
|
|
Actions.isCurrentClassName(*TemplateId->Name, getCurScope()) &&
|
|
isConstructorDeclarator(TemplateId->SS.isEmpty()))
|
|
goto DoneWithDeclSpec;
|
|
|
|
// Turn the template-id annotation token into a type annotation
|
|
// token, then try again to parse it as a type-specifier.
|
|
AnnotateTemplateIdTokenAsType();
|
|
continue;
|
|
}
|
|
|
|
// GNU attributes support.
|
|
case tok::kw___attribute:
|
|
ParseGNUAttributes(DS.getAttributes(), nullptr, LateAttrs);
|
|
continue;
|
|
|
|
// Microsoft declspec support.
|
|
case tok::kw___declspec:
|
|
ParseMicrosoftDeclSpecs(DS.getAttributes());
|
|
continue;
|
|
|
|
// Microsoft single token adornments.
|
|
case tok::kw___forceinline: {
|
|
isInvalid = DS.setFunctionSpecForceInline(Loc, PrevSpec, DiagID);
|
|
IdentifierInfo *AttrName = Tok.getIdentifierInfo();
|
|
SourceLocation AttrNameLoc = Tok.getLocation();
|
|
DS.getAttributes().addNew(AttrName, AttrNameLoc, nullptr, AttrNameLoc,
|
|
nullptr, 0, ParsedAttr::AS_Keyword);
|
|
break;
|
|
}
|
|
|
|
case tok::kw___unaligned:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_unaligned, Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
|
|
case tok::kw___sptr:
|
|
case tok::kw___uptr:
|
|
case tok::kw___ptr64:
|
|
case tok::kw___ptr32:
|
|
case tok::kw___w64:
|
|
case tok::kw___cdecl:
|
|
case tok::kw___stdcall:
|
|
case tok::kw___fastcall:
|
|
case tok::kw___thiscall:
|
|
case tok::kw___regcall:
|
|
case tok::kw___vectorcall:
|
|
ParseMicrosoftTypeAttributes(DS.getAttributes());
|
|
continue;
|
|
|
|
// Borland single token adornments.
|
|
case tok::kw___pascal:
|
|
ParseBorlandTypeAttributes(DS.getAttributes());
|
|
continue;
|
|
|
|
// OpenCL single token adornments.
|
|
case tok::kw___kernel:
|
|
ParseOpenCLKernelAttributes(DS.getAttributes());
|
|
continue;
|
|
|
|
// Nullability type specifiers.
|
|
case tok::kw__Nonnull:
|
|
case tok::kw__Nullable:
|
|
case tok::kw__Null_unspecified:
|
|
ParseNullabilityTypeSpecifiers(DS.getAttributes());
|
|
continue;
|
|
|
|
// Objective-C 'kindof' types.
|
|
case tok::kw___kindof:
|
|
DS.getAttributes().addNew(Tok.getIdentifierInfo(), Loc, nullptr, Loc,
|
|
nullptr, 0, ParsedAttr::AS_Keyword);
|
|
(void)ConsumeToken();
|
|
continue;
|
|
|
|
// storage-class-specifier
|
|
case tok::kw_typedef:
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_typedef, Loc,
|
|
PrevSpec, DiagID, Policy);
|
|
isStorageClass = true;
|
|
break;
|
|
case tok::kw_extern:
|
|
if (DS.getThreadStorageClassSpec() == DeclSpec::TSCS___thread)
|
|
Diag(Tok, diag::ext_thread_before) << "extern";
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_extern, Loc,
|
|
PrevSpec, DiagID, Policy);
|
|
isStorageClass = true;
|
|
break;
|
|
case tok::kw___private_extern__:
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_private_extern,
|
|
Loc, PrevSpec, DiagID, Policy);
|
|
isStorageClass = true;
|
|
break;
|
|
case tok::kw_static:
|
|
if (DS.getThreadStorageClassSpec() == DeclSpec::TSCS___thread)
|
|
Diag(Tok, diag::ext_thread_before) << "static";
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_static, Loc,
|
|
PrevSpec, DiagID, Policy);
|
|
isStorageClass = true;
|
|
break;
|
|
case tok::kw_auto:
|
|
if (getLangOpts().CPlusPlus11) {
|
|
if (isKnownToBeTypeSpecifier(GetLookAheadToken(1))) {
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_auto, Loc,
|
|
PrevSpec, DiagID, Policy);
|
|
if (!isInvalid)
|
|
Diag(Tok, diag::ext_auto_storage_class)
|
|
<< FixItHint::CreateRemoval(DS.getStorageClassSpecLoc());
|
|
} else
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
} else
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_auto, Loc,
|
|
PrevSpec, DiagID, Policy);
|
|
isStorageClass = true;
|
|
break;
|
|
case tok::kw___auto_type:
|
|
Diag(Tok, diag::ext_auto_type);
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto_type, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_register:
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_register, Loc,
|
|
PrevSpec, DiagID, Policy);
|
|
isStorageClass = true;
|
|
break;
|
|
case tok::kw_mutable:
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_mutable, Loc,
|
|
PrevSpec, DiagID, Policy);
|
|
isStorageClass = true;
|
|
break;
|
|
case tok::kw___thread:
|
|
isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS___thread, Loc,
|
|
PrevSpec, DiagID);
|
|
isStorageClass = true;
|
|
break;
|
|
case tok::kw_thread_local:
|
|
isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS_thread_local, Loc,
|
|
PrevSpec, DiagID);
|
|
isStorageClass = true;
|
|
break;
|
|
case tok::kw__Thread_local:
|
|
isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS__Thread_local,
|
|
Loc, PrevSpec, DiagID);
|
|
isStorageClass = true;
|
|
break;
|
|
|
|
// function-specifier
|
|
case tok::kw_inline:
|
|
isInvalid = DS.setFunctionSpecInline(Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_virtual:
|
|
// OpenCL C++ v1.0 s2.9: the virtual function qualifier is not supported.
|
|
if (getLangOpts().OpenCLCPlusPlus) {
|
|
DiagID = diag::err_openclcxx_virtual_function;
|
|
PrevSpec = Tok.getIdentifierInfo()->getNameStart();
|
|
isInvalid = true;
|
|
}
|
|
else {
|
|
isInvalid = DS.setFunctionSpecVirtual(Loc, PrevSpec, DiagID);
|
|
}
|
|
break;
|
|
case tok::kw_explicit:
|
|
isInvalid = DS.setFunctionSpecExplicit(Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw__Noreturn:
|
|
if (!getLangOpts().C11)
|
|
Diag(Loc, diag::ext_c11_noreturn);
|
|
isInvalid = DS.setFunctionSpecNoreturn(Loc, PrevSpec, DiagID);
|
|
break;
|
|
|
|
// alignment-specifier
|
|
case tok::kw__Alignas:
|
|
if (!getLangOpts().C11)
|
|
Diag(Tok, diag::ext_c11_alignment) << Tok.getName();
|
|
ParseAlignmentSpecifier(DS.getAttributes());
|
|
continue;
|
|
|
|
// friend
|
|
case tok::kw_friend:
|
|
if (DSContext == DeclSpecContext::DSC_class)
|
|
isInvalid = DS.SetFriendSpec(Loc, PrevSpec, DiagID);
|
|
else {
|
|
PrevSpec = ""; // not actually used by the diagnostic
|
|
DiagID = diag::err_friend_invalid_in_context;
|
|
isInvalid = true;
|
|
}
|
|
break;
|
|
|
|
// Modules
|
|
case tok::kw___module_private__:
|
|
isInvalid = DS.setModulePrivateSpec(Loc, PrevSpec, DiagID);
|
|
break;
|
|
|
|
// constexpr
|
|
case tok::kw_constexpr:
|
|
isInvalid = DS.SetConstexprSpec(Loc, PrevSpec, DiagID);
|
|
break;
|
|
|
|
// type-specifier
|
|
case tok::kw_short:
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_short, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_long:
|
|
if (DS.getTypeSpecWidth() != DeclSpec::TSW_long)
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_long, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
else
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw___int64:
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_signed:
|
|
isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_signed, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw_unsigned:
|
|
isInvalid = DS.SetTypeSpecSign(DeclSpec::TSS_unsigned, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw__Complex:
|
|
isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_complex, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw__Imaginary:
|
|
isInvalid = DS.SetTypeSpecComplex(DeclSpec::TSC_imaginary, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw_void:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_void, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_char:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_int:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw___int128:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int128, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_half:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_half, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_float:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_double:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_double, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw__Float16:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float16, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw__Accum:
|
|
if (!getLangOpts().FixedPoint) {
|
|
SetupFixedPointError(getLangOpts(), PrevSpec, DiagID, isInvalid);
|
|
} else {
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_accum, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
}
|
|
break;
|
|
case tok::kw__Fract:
|
|
if (!getLangOpts().FixedPoint) {
|
|
SetupFixedPointError(getLangOpts(), PrevSpec, DiagID, isInvalid);
|
|
} else {
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_fract, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
}
|
|
break;
|
|
case tok::kw__Sat:
|
|
if (!getLangOpts().FixedPoint) {
|
|
SetupFixedPointError(getLangOpts(), PrevSpec, DiagID, isInvalid);
|
|
} else {
|
|
isInvalid = DS.SetTypeSpecSat(Loc, PrevSpec, DiagID);
|
|
}
|
|
break;
|
|
case tok::kw___float128:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float128, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_wchar_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_wchar, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_char8_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char8, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_char16_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char16, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_char32_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char32, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw_bool:
|
|
case tok::kw__Bool:
|
|
if (Tok.is(tok::kw_bool) &&
|
|
DS.getTypeSpecType() != DeclSpec::TST_unspecified &&
|
|
DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
|
|
PrevSpec = ""; // Not used by the diagnostic.
|
|
DiagID = diag::err_bool_redeclaration;
|
|
// For better error recovery.
|
|
Tok.setKind(tok::identifier);
|
|
isInvalid = true;
|
|
} else {
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_bool, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
}
|
|
break;
|
|
case tok::kw__Decimal32:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal32, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw__Decimal64:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal64, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw__Decimal128:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal128, Loc, PrevSpec,
|
|
DiagID, Policy);
|
|
break;
|
|
case tok::kw___vector:
|
|
isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID, Policy);
|
|
break;
|
|
case tok::kw___pixel:
|
|
isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID, Policy);
|
|
break;
|
|
case tok::kw___bool:
|
|
isInvalid = DS.SetTypeAltiVecBool(true, Loc, PrevSpec, DiagID, Policy);
|
|
break;
|
|
case tok::kw_pipe:
|
|
if (!getLangOpts().OpenCL || (getLangOpts().OpenCLVersion < 200)) {
|
|
// OpenCL 2.0 defined this keyword. OpenCL 1.2 and earlier should
|
|
// support the "pipe" word as identifier.
|
|
Tok.getIdentifierInfo()->revertTokenIDToIdentifier();
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
isInvalid = DS.SetTypePipe(true, Loc, PrevSpec, DiagID, Policy);
|
|
break;
|
|
#define GENERIC_IMAGE_TYPE(ImgType, Id) \
|
|
case tok::kw_##ImgType##_t: \
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_##ImgType##_t, Loc, PrevSpec, \
|
|
DiagID, Policy); \
|
|
break;
|
|
#include "clang/Basic/OpenCLImageTypes.def"
|
|
case tok::kw___unknown_anytype:
|
|
isInvalid = DS.SetTypeSpecType(TST_unknown_anytype, Loc,
|
|
PrevSpec, DiagID, Policy);
|
|
break;
|
|
|
|
// class-specifier:
|
|
case tok::kw_class:
|
|
case tok::kw_struct:
|
|
case tok::kw___interface:
|
|
case tok::kw_union: {
|
|
tok::TokenKind Kind = Tok.getKind();
|
|
ConsumeToken();
|
|
|
|
// These are attributes following class specifiers.
|
|
// To produce better diagnostic, we parse them when
|
|
// parsing class specifier.
|
|
ParsedAttributesWithRange Attributes(AttrFactory);
|
|
ParseClassSpecifier(Kind, Loc, DS, TemplateInfo, AS,
|
|
EnteringContext, DSContext, Attributes);
|
|
|
|
// If there are attributes following class specifier,
|
|
// take them over and handle them here.
|
|
if (!Attributes.empty()) {
|
|
AttrsLastTime = true;
|
|
attrs.takeAllFrom(Attributes);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// enum-specifier:
|
|
case tok::kw_enum:
|
|
ConsumeToken();
|
|
ParseEnumSpecifier(Loc, DS, TemplateInfo, AS, DSContext);
|
|
continue;
|
|
|
|
// cv-qualifier:
|
|
case tok::kw_const:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_const, Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
case tok::kw_volatile:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
case tok::kw_restrict:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
|
|
// C++ typename-specifier:
|
|
case tok::kw_typename:
|
|
if (TryAnnotateTypeOrScopeToken()) {
|
|
DS.SetTypeSpecError();
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
if (!Tok.is(tok::kw_typename))
|
|
continue;
|
|
break;
|
|
|
|
// GNU typeof support.
|
|
case tok::kw_typeof:
|
|
ParseTypeofSpecifier(DS);
|
|
continue;
|
|
|
|
case tok::annot_decltype:
|
|
ParseDecltypeSpecifier(DS);
|
|
continue;
|
|
|
|
case tok::annot_pragma_pack:
|
|
HandlePragmaPack();
|
|
continue;
|
|
|
|
case tok::annot_pragma_ms_pragma:
|
|
HandlePragmaMSPragma();
|
|
continue;
|
|
|
|
case tok::annot_pragma_ms_vtordisp:
|
|
HandlePragmaMSVtorDisp();
|
|
continue;
|
|
|
|
case tok::annot_pragma_ms_pointers_to_members:
|
|
HandlePragmaMSPointersToMembers();
|
|
continue;
|
|
|
|
case tok::kw___underlying_type:
|
|
ParseUnderlyingTypeSpecifier(DS);
|
|
continue;
|
|
|
|
case tok::kw__Atomic:
|
|
// C11 6.7.2.4/4:
|
|
// If the _Atomic keyword is immediately followed by a left parenthesis,
|
|
// it is interpreted as a type specifier (with a type name), not as a
|
|
// type qualifier.
|
|
if (NextToken().is(tok::l_paren)) {
|
|
ParseAtomicSpecifier(DS);
|
|
continue;
|
|
}
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_atomic, Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
|
|
// OpenCL access qualifiers:
|
|
case tok::kw___read_only:
|
|
case tok::kw___write_only:
|
|
case tok::kw___read_write:
|
|
// OpenCL C++ 1.0 s2.2: access qualifiers are reserved keywords.
|
|
if (Actions.getLangOpts().OpenCLCPlusPlus) {
|
|
DiagID = diag::err_openclcxx_reserved;
|
|
PrevSpec = Tok.getIdentifierInfo()->getNameStart();
|
|
isInvalid = true;
|
|
}
|
|
ParseOpenCLQualifiers(DS.getAttributes());
|
|
break;
|
|
|
|
// OpenCL address space qualifiers:
|
|
case tok::kw___generic:
|
|
// generic address space is introduced only in OpenCL v2.0
|
|
// see OpenCL C Spec v2.0 s6.5.5
|
|
if (Actions.getLangOpts().OpenCLVersion < 200 &&
|
|
!Actions.getLangOpts().OpenCLCPlusPlus) {
|
|
DiagID = diag::err_opencl_unknown_type_specifier;
|
|
PrevSpec = Tok.getIdentifierInfo()->getNameStart();
|
|
isInvalid = true;
|
|
break;
|
|
};
|
|
LLVM_FALLTHROUGH;
|
|
case tok::kw___private:
|
|
case tok::kw___global:
|
|
case tok::kw___local:
|
|
case tok::kw___constant:
|
|
ParseOpenCLQualifiers(DS.getAttributes());
|
|
break;
|
|
|
|
case tok::less:
|
|
// GCC ObjC supports types like "<SomeProtocol>" as a synonym for
|
|
// "id<SomeProtocol>". This is hopelessly old fashioned and dangerous,
|
|
// but we support it.
|
|
if (DS.hasTypeSpecifier() || !getLangOpts().ObjC)
|
|
goto DoneWithDeclSpec;
|
|
|
|
SourceLocation StartLoc = Tok.getLocation();
|
|
SourceLocation EndLoc;
|
|
TypeResult Type = parseObjCProtocolQualifierType(EndLoc);
|
|
if (Type.isUsable()) {
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_typename, StartLoc, StartLoc,
|
|
PrevSpec, DiagID, Type.get(),
|
|
Actions.getASTContext().getPrintingPolicy()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
|
|
DS.SetRangeEnd(EndLoc);
|
|
} else {
|
|
DS.SetTypeSpecError();
|
|
}
|
|
|
|
// Need to support trailing type qualifiers (e.g. "id<p> const").
|
|
// If a type specifier follows, it will be diagnosed elsewhere.
|
|
continue;
|
|
}
|
|
// If the specifier wasn't legal, issue a diagnostic.
|
|
if (isInvalid) {
|
|
assert(PrevSpec && "Method did not return previous specifier!");
|
|
assert(DiagID);
|
|
|
|
if (DiagID == diag::ext_duplicate_declspec ||
|
|
DiagID == diag::ext_warn_duplicate_declspec)
|
|
Diag(Tok, DiagID)
|
|
<< PrevSpec << FixItHint::CreateRemoval(Tok.getLocation());
|
|
else if (DiagID == diag::err_opencl_unknown_type_specifier) {
|
|
Diag(Tok, DiagID) << getLangOpts().OpenCLCPlusPlus
|
|
<< getLangOpts().getOpenCLVersionTuple().getAsString()
|
|
<< PrevSpec << isStorageClass;
|
|
} else
|
|
Diag(Tok, DiagID) << PrevSpec;
|
|
}
|
|
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
if (DiagID != diag::err_bool_redeclaration)
|
|
// After an error the next token can be an annotation token.
|
|
ConsumeAnyToken();
|
|
|
|
AttrsLastTime = false;
|
|
}
|
|
}
|
|
|
|
/// ParseStructDeclaration - Parse a struct declaration without the terminating
|
|
/// semicolon.
|
|
///
|
|
/// struct-declaration:
|
|
/// [C2x] attributes-specifier-seq[opt]
|
|
/// specifier-qualifier-list struct-declarator-list
|
|
/// [GNU] __extension__ struct-declaration
|
|
/// [GNU] specifier-qualifier-list
|
|
/// struct-declarator-list:
|
|
/// struct-declarator
|
|
/// struct-declarator-list ',' struct-declarator
|
|
/// [GNU] struct-declarator-list ',' attributes[opt] struct-declarator
|
|
/// struct-declarator:
|
|
/// declarator
|
|
/// [GNU] declarator attributes[opt]
|
|
/// declarator[opt] ':' constant-expression
|
|
/// [GNU] declarator[opt] ':' constant-expression attributes[opt]
|
|
///
|
|
void Parser::ParseStructDeclaration(
|
|
ParsingDeclSpec &DS,
|
|
llvm::function_ref<void(ParsingFieldDeclarator &)> FieldsCallback) {
|
|
|
|
if (Tok.is(tok::kw___extension__)) {
|
|
// __extension__ silences extension warnings in the subexpression.
|
|
ExtensionRAIIObject O(Diags); // Use RAII to do this.
|
|
ConsumeToken();
|
|
return ParseStructDeclaration(DS, FieldsCallback);
|
|
}
|
|
|
|
// Parse leading attributes.
|
|
ParsedAttributesWithRange Attrs(AttrFactory);
|
|
MaybeParseCXX11Attributes(Attrs);
|
|
DS.takeAttributesFrom(Attrs);
|
|
|
|
// Parse the common specifier-qualifiers-list piece.
|
|
ParseSpecifierQualifierList(DS);
|
|
|
|
// If there are no declarators, this is a free-standing declaration
|
|
// specifier. Let the actions module cope with it.
|
|
if (Tok.is(tok::semi)) {
|
|
RecordDecl *AnonRecord = nullptr;
|
|
Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none,
|
|
DS, AnonRecord);
|
|
assert(!AnonRecord && "Did not expect anonymous struct or union here");
|
|
DS.complete(TheDecl);
|
|
return;
|
|
}
|
|
|
|
// Read struct-declarators until we find the semicolon.
|
|
bool FirstDeclarator = true;
|
|
SourceLocation CommaLoc;
|
|
while (1) {
|
|
ParsingFieldDeclarator DeclaratorInfo(*this, DS);
|
|
DeclaratorInfo.D.setCommaLoc(CommaLoc);
|
|
|
|
// Attributes are only allowed here on successive declarators.
|
|
if (!FirstDeclarator)
|
|
MaybeParseGNUAttributes(DeclaratorInfo.D);
|
|
|
|
/// struct-declarator: declarator
|
|
/// struct-declarator: declarator[opt] ':' constant-expression
|
|
if (Tok.isNot(tok::colon)) {
|
|
// Don't parse FOO:BAR as if it were a typo for FOO::BAR.
|
|
ColonProtectionRAIIObject X(*this);
|
|
ParseDeclarator(DeclaratorInfo.D);
|
|
} else
|
|
DeclaratorInfo.D.SetIdentifier(nullptr, Tok.getLocation());
|
|
|
|
if (TryConsumeToken(tok::colon)) {
|
|
ExprResult Res(ParseConstantExpression());
|
|
if (Res.isInvalid())
|
|
SkipUntil(tok::semi, StopBeforeMatch);
|
|
else
|
|
DeclaratorInfo.BitfieldSize = Res.get();
|
|
}
|
|
|
|
// If attributes exist after the declarator, parse them.
|
|
MaybeParseGNUAttributes(DeclaratorInfo.D);
|
|
|
|
// We're done with this declarator; invoke the callback.
|
|
FieldsCallback(DeclaratorInfo);
|
|
|
|
// If we don't have a comma, it is either the end of the list (a ';')
|
|
// or an error, bail out.
|
|
if (!TryConsumeToken(tok::comma, CommaLoc))
|
|
return;
|
|
|
|
FirstDeclarator = false;
|
|
}
|
|
}
|
|
|
|
/// ParseStructUnionBody
|
|
/// struct-contents:
|
|
/// struct-declaration-list
|
|
/// [EXT] empty
|
|
/// [GNU] "struct-declaration-list" without terminatoring ';'
|
|
/// struct-declaration-list:
|
|
/// struct-declaration
|
|
/// struct-declaration-list struct-declaration
|
|
/// [OBC] '@' 'defs' '(' class-name ')'
|
|
///
|
|
void Parser::ParseStructUnionBody(SourceLocation RecordLoc,
|
|
unsigned TagType, Decl *TagDecl) {
|
|
PrettyDeclStackTraceEntry CrashInfo(Actions.Context, TagDecl, RecordLoc,
|
|
"parsing struct/union body");
|
|
assert(!getLangOpts().CPlusPlus && "C++ declarations not supported");
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_brace);
|
|
if (T.consumeOpen())
|
|
return;
|
|
|
|
ParseScope StructScope(this, Scope::ClassScope|Scope::DeclScope);
|
|
Actions.ActOnTagStartDefinition(getCurScope(), TagDecl);
|
|
|
|
SmallVector<Decl *, 32> FieldDecls;
|
|
|
|
// While we still have something to read, read the declarations in the struct.
|
|
while (!tryParseMisplacedModuleImport() && Tok.isNot(tok::r_brace) &&
|
|
Tok.isNot(tok::eof)) {
|
|
// Each iteration of this loop reads one struct-declaration.
|
|
|
|
// Check for extraneous top-level semicolon.
|
|
if (Tok.is(tok::semi)) {
|
|
ConsumeExtraSemi(InsideStruct, TagType);
|
|
continue;
|
|
}
|
|
|
|
// Parse _Static_assert declaration.
|
|
if (Tok.is(tok::kw__Static_assert)) {
|
|
SourceLocation DeclEnd;
|
|
ParseStaticAssertDeclaration(DeclEnd);
|
|
continue;
|
|
}
|
|
|
|
if (Tok.is(tok::annot_pragma_pack)) {
|
|
HandlePragmaPack();
|
|
continue;
|
|
}
|
|
|
|
if (Tok.is(tok::annot_pragma_align)) {
|
|
HandlePragmaAlign();
|
|
continue;
|
|
}
|
|
|
|
if (Tok.is(tok::annot_pragma_openmp)) {
|
|
// Result can be ignored, because it must be always empty.
|
|
AccessSpecifier AS = AS_none;
|
|
ParsedAttributesWithRange Attrs(AttrFactory);
|
|
(void)ParseOpenMPDeclarativeDirectiveWithExtDecl(AS, Attrs);
|
|
continue;
|
|
}
|
|
|
|
if (!Tok.is(tok::at)) {
|
|
auto CFieldCallback = [&](ParsingFieldDeclarator &FD) {
|
|
// Install the declarator into the current TagDecl.
|
|
Decl *Field =
|
|
Actions.ActOnField(getCurScope(), TagDecl,
|
|
FD.D.getDeclSpec().getSourceRange().getBegin(),
|
|
FD.D, FD.BitfieldSize);
|
|
FieldDecls.push_back(Field);
|
|
FD.complete(Field);
|
|
};
|
|
|
|
// Parse all the comma separated declarators.
|
|
ParsingDeclSpec DS(*this);
|
|
ParseStructDeclaration(DS, CFieldCallback);
|
|
} else { // Handle @defs
|
|
ConsumeToken();
|
|
if (!Tok.isObjCAtKeyword(tok::objc_defs)) {
|
|
Diag(Tok, diag::err_unexpected_at);
|
|
SkipUntil(tok::semi);
|
|
continue;
|
|
}
|
|
ConsumeToken();
|
|
ExpectAndConsume(tok::l_paren);
|
|
if (!Tok.is(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected) << tok::identifier;
|
|
SkipUntil(tok::semi);
|
|
continue;
|
|
}
|
|
SmallVector<Decl *, 16> Fields;
|
|
Actions.ActOnDefs(getCurScope(), TagDecl, Tok.getLocation(),
|
|
Tok.getIdentifierInfo(), Fields);
|
|
FieldDecls.insert(FieldDecls.end(), Fields.begin(), Fields.end());
|
|
ConsumeToken();
|
|
ExpectAndConsume(tok::r_paren);
|
|
}
|
|
|
|
if (TryConsumeToken(tok::semi))
|
|
continue;
|
|
|
|
if (Tok.is(tok::r_brace)) {
|
|
ExpectAndConsume(tok::semi, diag::ext_expected_semi_decl_list);
|
|
break;
|
|
}
|
|
|
|
ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list);
|
|
// Skip to end of block or statement to avoid ext-warning on extra ';'.
|
|
SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
|
|
// If we stopped at a ';', eat it.
|
|
TryConsumeToken(tok::semi);
|
|
}
|
|
|
|
T.consumeClose();
|
|
|
|
ParsedAttributes attrs(AttrFactory);
|
|
// If attributes exist after struct contents, parse them.
|
|
MaybeParseGNUAttributes(attrs);
|
|
|
|
Actions.ActOnFields(getCurScope(), RecordLoc, TagDecl, FieldDecls,
|
|
T.getOpenLocation(), T.getCloseLocation(), attrs);
|
|
StructScope.Exit();
|
|
Actions.ActOnTagFinishDefinition(getCurScope(), TagDecl, T.getRange());
|
|
}
|
|
|
|
/// ParseEnumSpecifier
|
|
/// enum-specifier: [C99 6.7.2.2]
|
|
/// 'enum' identifier[opt] '{' enumerator-list '}'
|
|
///[C99/C++]'enum' identifier[opt] '{' enumerator-list ',' '}'
|
|
/// [GNU] 'enum' attributes[opt] identifier[opt] '{' enumerator-list ',' [opt]
|
|
/// '}' attributes[opt]
|
|
/// [MS] 'enum' __declspec[opt] identifier[opt] '{' enumerator-list ',' [opt]
|
|
/// '}'
|
|
/// 'enum' identifier
|
|
/// [GNU] 'enum' attributes[opt] identifier
|
|
///
|
|
/// [C++11] enum-head '{' enumerator-list[opt] '}'
|
|
/// [C++11] enum-head '{' enumerator-list ',' '}'
|
|
///
|
|
/// enum-head: [C++11]
|
|
/// enum-key attribute-specifier-seq[opt] identifier[opt] enum-base[opt]
|
|
/// enum-key attribute-specifier-seq[opt] nested-name-specifier
|
|
/// identifier enum-base[opt]
|
|
///
|
|
/// enum-key: [C++11]
|
|
/// 'enum'
|
|
/// 'enum' 'class'
|
|
/// 'enum' 'struct'
|
|
///
|
|
/// enum-base: [C++11]
|
|
/// ':' type-specifier-seq
|
|
///
|
|
/// [C++] elaborated-type-specifier:
|
|
/// [C++] 'enum' '::'[opt] nested-name-specifier[opt] identifier
|
|
///
|
|
void Parser::ParseEnumSpecifier(SourceLocation StartLoc, DeclSpec &DS,
|
|
const ParsedTemplateInfo &TemplateInfo,
|
|
AccessSpecifier AS, DeclSpecContext DSC) {
|
|
// Parse the tag portion of this.
|
|
if (Tok.is(tok::code_completion)) {
|
|
// Code completion for an enum name.
|
|
Actions.CodeCompleteTag(getCurScope(), DeclSpec::TST_enum);
|
|
return cutOffParsing();
|
|
}
|
|
|
|
// If attributes exist after tag, parse them.
|
|
ParsedAttributesWithRange attrs(AttrFactory);
|
|
MaybeParseGNUAttributes(attrs);
|
|
MaybeParseCXX11Attributes(attrs);
|
|
MaybeParseMicrosoftDeclSpecs(attrs);
|
|
|
|
SourceLocation ScopedEnumKWLoc;
|
|
bool IsScopedUsingClassTag = false;
|
|
|
|
// In C++11, recognize 'enum class' and 'enum struct'.
|
|
if (Tok.isOneOf(tok::kw_class, tok::kw_struct)) {
|
|
Diag(Tok, getLangOpts().CPlusPlus11 ? diag::warn_cxx98_compat_scoped_enum
|
|
: diag::ext_scoped_enum);
|
|
IsScopedUsingClassTag = Tok.is(tok::kw_class);
|
|
ScopedEnumKWLoc = ConsumeToken();
|
|
|
|
// Attributes are not allowed between these keywords. Diagnose,
|
|
// but then just treat them like they appeared in the right place.
|
|
ProhibitAttributes(attrs);
|
|
|
|
// They are allowed afterwards, though.
|
|
MaybeParseGNUAttributes(attrs);
|
|
MaybeParseCXX11Attributes(attrs);
|
|
MaybeParseMicrosoftDeclSpecs(attrs);
|
|
}
|
|
|
|
// C++11 [temp.explicit]p12:
|
|
// The usual access controls do not apply to names used to specify
|
|
// explicit instantiations.
|
|
// We extend this to also cover explicit specializations. Note that
|
|
// we don't suppress if this turns out to be an elaborated type
|
|
// specifier.
|
|
bool shouldDelayDiagsInTag =
|
|
(TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
|
|
TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
|
|
SuppressAccessChecks diagsFromTag(*this, shouldDelayDiagsInTag);
|
|
|
|
// Enum definitions should not be parsed in a trailing-return-type.
|
|
bool AllowDeclaration = DSC != DeclSpecContext::DSC_trailing;
|
|
|
|
CXXScopeSpec &SS = DS.getTypeSpecScope();
|
|
if (getLangOpts().CPlusPlus) {
|
|
// "enum foo : bar;" is not a potential typo for "enum foo::bar;"
|
|
// if a fixed underlying type is allowed.
|
|
ColonProtectionRAIIObject X(*this, AllowDeclaration);
|
|
|
|
CXXScopeSpec Spec;
|
|
if (ParseOptionalCXXScopeSpecifier(Spec, nullptr,
|
|
/*EnteringContext=*/true))
|
|
return;
|
|
|
|
if (Spec.isSet() && Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected) << tok::identifier;
|
|
if (Tok.isNot(tok::l_brace)) {
|
|
// Has no name and is not a definition.
|
|
// Skip the rest of this declarator, up until the comma or semicolon.
|
|
SkipUntil(tok::comma, StopAtSemi);
|
|
return;
|
|
}
|
|
}
|
|
|
|
SS = Spec;
|
|
}
|
|
|
|
// Must have either 'enum name' or 'enum {...}'.
|
|
if (Tok.isNot(tok::identifier) && Tok.isNot(tok::l_brace) &&
|
|
!(AllowDeclaration && Tok.is(tok::colon))) {
|
|
Diag(Tok, diag::err_expected_either) << tok::identifier << tok::l_brace;
|
|
|
|
// Skip the rest of this declarator, up until the comma or semicolon.
|
|
SkipUntil(tok::comma, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
// If an identifier is present, consume and remember it.
|
|
IdentifierInfo *Name = nullptr;
|
|
SourceLocation NameLoc;
|
|
if (Tok.is(tok::identifier)) {
|
|
Name = Tok.getIdentifierInfo();
|
|
NameLoc = ConsumeToken();
|
|
}
|
|
|
|
if (!Name && ScopedEnumKWLoc.isValid()) {
|
|
// C++0x 7.2p2: The optional identifier shall not be omitted in the
|
|
// declaration of a scoped enumeration.
|
|
Diag(Tok, diag::err_scoped_enum_missing_identifier);
|
|
ScopedEnumKWLoc = SourceLocation();
|
|
IsScopedUsingClassTag = false;
|
|
}
|
|
|
|
// Okay, end the suppression area. We'll decide whether to emit the
|
|
// diagnostics in a second.
|
|
if (shouldDelayDiagsInTag)
|
|
diagsFromTag.done();
|
|
|
|
TypeResult BaseType;
|
|
|
|
// Parse the fixed underlying type.
|
|
bool CanBeBitfield = getCurScope()->getFlags() & Scope::ClassScope;
|
|
if (AllowDeclaration && Tok.is(tok::colon)) {
|
|
bool PossibleBitfield = false;
|
|
if (CanBeBitfield) {
|
|
// If we're in class scope, this can either be an enum declaration with
|
|
// an underlying type, or a declaration of a bitfield member. We try to
|
|
// use a simple disambiguation scheme first to catch the common cases
|
|
// (integer literal, sizeof); if it's still ambiguous, we then consider
|
|
// anything that's a simple-type-specifier followed by '(' as an
|
|
// expression. This suffices because function types are not valid
|
|
// underlying types anyway.
|
|
EnterExpressionEvaluationContext Unevaluated(
|
|
Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
|
|
TPResult TPR = isExpressionOrTypeSpecifierSimple(NextToken().getKind());
|
|
// If the next token starts an expression, we know we're parsing a
|
|
// bit-field. This is the common case.
|
|
if (TPR == TPResult::True)
|
|
PossibleBitfield = true;
|
|
// If the next token starts a type-specifier-seq, it may be either a
|
|
// a fixed underlying type or the start of a function-style cast in C++;
|
|
// lookahead one more token to see if it's obvious that we have a
|
|
// fixed underlying type.
|
|
else if (TPR == TPResult::False &&
|
|
GetLookAheadToken(2).getKind() == tok::semi) {
|
|
// Consume the ':'.
|
|
ConsumeToken();
|
|
} else {
|
|
// We have the start of a type-specifier-seq, so we have to perform
|
|
// tentative parsing to determine whether we have an expression or a
|
|
// type.
|
|
TentativeParsingAction TPA(*this);
|
|
|
|
// Consume the ':'.
|
|
ConsumeToken();
|
|
|
|
// If we see a type specifier followed by an open-brace, we have an
|
|
// ambiguity between an underlying type and a C++11 braced
|
|
// function-style cast. Resolve this by always treating it as an
|
|
// underlying type.
|
|
// FIXME: The standard is not entirely clear on how to disambiguate in
|
|
// this case.
|
|
if ((getLangOpts().CPlusPlus &&
|
|
isCXXDeclarationSpecifier(TPResult::True) != TPResult::True) ||
|
|
(!getLangOpts().CPlusPlus && !isDeclarationSpecifier(true))) {
|
|
// We'll parse this as a bitfield later.
|
|
PossibleBitfield = true;
|
|
TPA.Revert();
|
|
} else {
|
|
// We have a type-specifier-seq.
|
|
TPA.Commit();
|
|
}
|
|
}
|
|
} else {
|
|
// Consume the ':'.
|
|
ConsumeToken();
|
|
}
|
|
|
|
if (!PossibleBitfield) {
|
|
SourceRange Range;
|
|
BaseType = ParseTypeName(&Range);
|
|
|
|
if (!getLangOpts().ObjC) {
|
|
if (getLangOpts().CPlusPlus11)
|
|
Diag(StartLoc, diag::warn_cxx98_compat_enum_fixed_underlying_type);
|
|
else if (getLangOpts().CPlusPlus)
|
|
Diag(StartLoc, diag::ext_cxx11_enum_fixed_underlying_type);
|
|
else if (getLangOpts().MicrosoftExt)
|
|
Diag(StartLoc, diag::ext_ms_c_enum_fixed_underlying_type);
|
|
else
|
|
Diag(StartLoc, diag::ext_clang_c_enum_fixed_underlying_type);
|
|
}
|
|
}
|
|
}
|
|
|
|
// There are four options here. If we have 'friend enum foo;' then this is a
|
|
// friend declaration, and cannot have an accompanying definition. If we have
|
|
// 'enum foo;', then this is a forward declaration. If we have
|
|
// 'enum foo {...' then this is a definition. Otherwise we have something
|
|
// like 'enum foo xyz', a reference.
|
|
//
|
|
// This is needed to handle stuff like this right (C99 6.7.2.3p11):
|
|
// enum foo {..}; void bar() { enum foo; } <- new foo in bar.
|
|
// enum foo {..}; void bar() { enum foo x; } <- use of old foo.
|
|
//
|
|
Sema::TagUseKind TUK;
|
|
if (!AllowDeclaration) {
|
|
TUK = Sema::TUK_Reference;
|
|
} else if (Tok.is(tok::l_brace)) {
|
|
if (DS.isFriendSpecified()) {
|
|
Diag(Tok.getLocation(), diag::err_friend_decl_defines_type)
|
|
<< SourceRange(DS.getFriendSpecLoc());
|
|
ConsumeBrace();
|
|
SkipUntil(tok::r_brace, StopAtSemi);
|
|
TUK = Sema::TUK_Friend;
|
|
} else {
|
|
TUK = Sema::TUK_Definition;
|
|
}
|
|
} else if (!isTypeSpecifier(DSC) &&
|
|
(Tok.is(tok::semi) ||
|
|
(Tok.isAtStartOfLine() &&
|
|
!isValidAfterTypeSpecifier(CanBeBitfield)))) {
|
|
TUK = DS.isFriendSpecified() ? Sema::TUK_Friend : Sema::TUK_Declaration;
|
|
if (Tok.isNot(tok::semi)) {
|
|
// A semicolon was missing after this declaration. Diagnose and recover.
|
|
ExpectAndConsume(tok::semi, diag::err_expected_after, "enum");
|
|
PP.EnterToken(Tok);
|
|
Tok.setKind(tok::semi);
|
|
}
|
|
} else {
|
|
TUK = Sema::TUK_Reference;
|
|
}
|
|
|
|
// If this is an elaborated type specifier, and we delayed
|
|
// diagnostics before, just merge them into the current pool.
|
|
if (TUK == Sema::TUK_Reference && shouldDelayDiagsInTag) {
|
|
diagsFromTag.redelay();
|
|
}
|
|
|
|
MultiTemplateParamsArg TParams;
|
|
if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate &&
|
|
TUK != Sema::TUK_Reference) {
|
|
if (!getLangOpts().CPlusPlus11 || !SS.isSet()) {
|
|
// Skip the rest of this declarator, up until the comma or semicolon.
|
|
Diag(Tok, diag::err_enum_template);
|
|
SkipUntil(tok::comma, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
|
|
// Enumerations can't be explicitly instantiated.
|
|
DS.SetTypeSpecError();
|
|
Diag(StartLoc, diag::err_explicit_instantiation_enum);
|
|
return;
|
|
}
|
|
|
|
assert(TemplateInfo.TemplateParams && "no template parameters");
|
|
TParams = MultiTemplateParamsArg(TemplateInfo.TemplateParams->data(),
|
|
TemplateInfo.TemplateParams->size());
|
|
}
|
|
|
|
if (TUK == Sema::TUK_Reference)
|
|
ProhibitAttributes(attrs);
|
|
|
|
if (!Name && TUK != Sema::TUK_Definition) {
|
|
Diag(Tok, diag::err_enumerator_unnamed_no_def);
|
|
|
|
// Skip the rest of this declarator, up until the comma or semicolon.
|
|
SkipUntil(tok::comma, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
stripTypeAttributesOffDeclSpec(attrs, DS, TUK);
|
|
|
|
Sema::SkipBodyInfo SkipBody;
|
|
if (!Name && TUK == Sema::TUK_Definition && Tok.is(tok::l_brace) &&
|
|
NextToken().is(tok::identifier))
|
|
SkipBody = Actions.shouldSkipAnonEnumBody(getCurScope(),
|
|
NextToken().getIdentifierInfo(),
|
|
NextToken().getLocation());
|
|
|
|
bool Owned = false;
|
|
bool IsDependent = false;
|
|
const char *PrevSpec = nullptr;
|
|
unsigned DiagID;
|
|
Decl *TagDecl = Actions.ActOnTag(
|
|
getCurScope(), DeclSpec::TST_enum, TUK, StartLoc, SS, Name, NameLoc,
|
|
attrs, AS, DS.getModulePrivateSpecLoc(), TParams, Owned, IsDependent,
|
|
ScopedEnumKWLoc, IsScopedUsingClassTag, BaseType,
|
|
DSC == DeclSpecContext::DSC_type_specifier,
|
|
DSC == DeclSpecContext::DSC_template_param ||
|
|
DSC == DeclSpecContext::DSC_template_type_arg,
|
|
&SkipBody);
|
|
|
|
if (SkipBody.ShouldSkip) {
|
|
assert(TUK == Sema::TUK_Definition && "can only skip a definition");
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_brace);
|
|
T.consumeOpen();
|
|
T.skipToEnd();
|
|
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_enum, StartLoc,
|
|
NameLoc.isValid() ? NameLoc : StartLoc,
|
|
PrevSpec, DiagID, TagDecl, Owned,
|
|
Actions.getASTContext().getPrintingPolicy()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
return;
|
|
}
|
|
|
|
if (IsDependent) {
|
|
// This enum has a dependent nested-name-specifier. Handle it as a
|
|
// dependent tag.
|
|
if (!Name) {
|
|
DS.SetTypeSpecError();
|
|
Diag(Tok, diag::err_expected_type_name_after_typename);
|
|
return;
|
|
}
|
|
|
|
TypeResult Type = Actions.ActOnDependentTag(
|
|
getCurScope(), DeclSpec::TST_enum, TUK, SS, Name, StartLoc, NameLoc);
|
|
if (Type.isInvalid()) {
|
|
DS.SetTypeSpecError();
|
|
return;
|
|
}
|
|
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_typename, StartLoc,
|
|
NameLoc.isValid() ? NameLoc : StartLoc,
|
|
PrevSpec, DiagID, Type.get(),
|
|
Actions.getASTContext().getPrintingPolicy()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
|
|
return;
|
|
}
|
|
|
|
if (!TagDecl) {
|
|
// The action failed to produce an enumeration tag. If this is a
|
|
// definition, consume the entire definition.
|
|
if (Tok.is(tok::l_brace) && TUK != Sema::TUK_Reference) {
|
|
ConsumeBrace();
|
|
SkipUntil(tok::r_brace, StopAtSemi);
|
|
}
|
|
|
|
DS.SetTypeSpecError();
|
|
return;
|
|
}
|
|
|
|
if (Tok.is(tok::l_brace) && TUK != Sema::TUK_Reference) {
|
|
Decl *D = SkipBody.CheckSameAsPrevious ? SkipBody.New : TagDecl;
|
|
ParseEnumBody(StartLoc, D);
|
|
if (SkipBody.CheckSameAsPrevious &&
|
|
!Actions.ActOnDuplicateDefinition(DS, TagDecl, SkipBody)) {
|
|
DS.SetTypeSpecError();
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_enum, StartLoc,
|
|
NameLoc.isValid() ? NameLoc : StartLoc,
|
|
PrevSpec, DiagID, TagDecl, Owned,
|
|
Actions.getASTContext().getPrintingPolicy()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
}
|
|
|
|
/// ParseEnumBody - Parse a {} enclosed enumerator-list.
|
|
/// enumerator-list:
|
|
/// enumerator
|
|
/// enumerator-list ',' enumerator
|
|
/// enumerator:
|
|
/// enumeration-constant attributes[opt]
|
|
/// enumeration-constant attributes[opt] '=' constant-expression
|
|
/// enumeration-constant:
|
|
/// identifier
|
|
///
|
|
void Parser::ParseEnumBody(SourceLocation StartLoc, Decl *EnumDecl) {
|
|
// Enter the scope of the enum body and start the definition.
|
|
ParseScope EnumScope(this, Scope::DeclScope | Scope::EnumScope);
|
|
Actions.ActOnTagStartDefinition(getCurScope(), EnumDecl);
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_brace);
|
|
T.consumeOpen();
|
|
|
|
// C does not allow an empty enumerator-list, C++ does [dcl.enum].
|
|
if (Tok.is(tok::r_brace) && !getLangOpts().CPlusPlus)
|
|
Diag(Tok, diag::err_empty_enum);
|
|
|
|
SmallVector<Decl *, 32> EnumConstantDecls;
|
|
SmallVector<SuppressAccessChecks, 32> EnumAvailabilityDiags;
|
|
|
|
Decl *LastEnumConstDecl = nullptr;
|
|
|
|
// Parse the enumerator-list.
|
|
while (Tok.isNot(tok::r_brace)) {
|
|
// Parse enumerator. If failed, try skipping till the start of the next
|
|
// enumerator definition.
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok.getLocation(), diag::err_expected) << tok::identifier;
|
|
if (SkipUntil(tok::comma, tok::r_brace, StopBeforeMatch) &&
|
|
TryConsumeToken(tok::comma))
|
|
continue;
|
|
break;
|
|
}
|
|
IdentifierInfo *Ident = Tok.getIdentifierInfo();
|
|
SourceLocation IdentLoc = ConsumeToken();
|
|
|
|
// If attributes exist after the enumerator, parse them.
|
|
ParsedAttributesWithRange attrs(AttrFactory);
|
|
MaybeParseGNUAttributes(attrs);
|
|
ProhibitAttributes(attrs); // GNU-style attributes are prohibited.
|
|
if (standardAttributesAllowed() && isCXX11AttributeSpecifier()) {
|
|
if (getLangOpts().CPlusPlus)
|
|
Diag(Tok.getLocation(), getLangOpts().CPlusPlus17
|
|
? diag::warn_cxx14_compat_ns_enum_attribute
|
|
: diag::ext_ns_enum_attribute)
|
|
<< 1 /*enumerator*/;
|
|
ParseCXX11Attributes(attrs);
|
|
}
|
|
|
|
SourceLocation EqualLoc;
|
|
ExprResult AssignedVal;
|
|
EnumAvailabilityDiags.emplace_back(*this);
|
|
|
|
if (TryConsumeToken(tok::equal, EqualLoc)) {
|
|
AssignedVal = ParseConstantExpression();
|
|
if (AssignedVal.isInvalid())
|
|
SkipUntil(tok::comma, tok::r_brace, StopBeforeMatch);
|
|
}
|
|
|
|
// Install the enumerator constant into EnumDecl.
|
|
Decl *EnumConstDecl = Actions.ActOnEnumConstant(
|
|
getCurScope(), EnumDecl, LastEnumConstDecl, IdentLoc, Ident, attrs,
|
|
EqualLoc, AssignedVal.get());
|
|
EnumAvailabilityDiags.back().done();
|
|
|
|
EnumConstantDecls.push_back(EnumConstDecl);
|
|
LastEnumConstDecl = EnumConstDecl;
|
|
|
|
if (Tok.is(tok::identifier)) {
|
|
// We're missing a comma between enumerators.
|
|
SourceLocation Loc = getEndOfPreviousToken();
|
|
Diag(Loc, diag::err_enumerator_list_missing_comma)
|
|
<< FixItHint::CreateInsertion(Loc, ", ");
|
|
continue;
|
|
}
|
|
|
|
// Emumerator definition must be finished, only comma or r_brace are
|
|
// allowed here.
|
|
SourceLocation CommaLoc;
|
|
if (Tok.isNot(tok::r_brace) && !TryConsumeToken(tok::comma, CommaLoc)) {
|
|
if (EqualLoc.isValid())
|
|
Diag(Tok.getLocation(), diag::err_expected_either) << tok::r_brace
|
|
<< tok::comma;
|
|
else
|
|
Diag(Tok.getLocation(), diag::err_expected_end_of_enumerator);
|
|
if (SkipUntil(tok::comma, tok::r_brace, StopBeforeMatch)) {
|
|
if (TryConsumeToken(tok::comma, CommaLoc))
|
|
continue;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// If comma is followed by r_brace, emit appropriate warning.
|
|
if (Tok.is(tok::r_brace) && CommaLoc.isValid()) {
|
|
if (!getLangOpts().C99 && !getLangOpts().CPlusPlus11)
|
|
Diag(CommaLoc, getLangOpts().CPlusPlus ?
|
|
diag::ext_enumerator_list_comma_cxx :
|
|
diag::ext_enumerator_list_comma_c)
|
|
<< FixItHint::CreateRemoval(CommaLoc);
|
|
else if (getLangOpts().CPlusPlus11)
|
|
Diag(CommaLoc, diag::warn_cxx98_compat_enumerator_list_comma)
|
|
<< FixItHint::CreateRemoval(CommaLoc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Eat the }.
|
|
T.consumeClose();
|
|
|
|
// If attributes exist after the identifier list, parse them.
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseGNUAttributes(attrs);
|
|
|
|
Actions.ActOnEnumBody(StartLoc, T.getRange(), EnumDecl, EnumConstantDecls,
|
|
getCurScope(), attrs);
|
|
|
|
// Now handle enum constant availability diagnostics.
|
|
assert(EnumConstantDecls.size() == EnumAvailabilityDiags.size());
|
|
for (size_t i = 0, e = EnumConstantDecls.size(); i != e; ++i) {
|
|
ParsingDeclRAIIObject PD(*this, ParsingDeclRAIIObject::NoParent);
|
|
EnumAvailabilityDiags[i].redelay();
|
|
PD.complete(EnumConstantDecls[i]);
|
|
}
|
|
|
|
EnumScope.Exit();
|
|
Actions.ActOnTagFinishDefinition(getCurScope(), EnumDecl, T.getRange());
|
|
|
|
// The next token must be valid after an enum definition. If not, a ';'
|
|
// was probably forgotten.
|
|
bool CanBeBitfield = getCurScope()->getFlags() & Scope::ClassScope;
|
|
if (!isValidAfterTypeSpecifier(CanBeBitfield)) {
|
|
ExpectAndConsume(tok::semi, diag::err_expected_after, "enum");
|
|
// Push this token back into the preprocessor and change our current token
|
|
// to ';' so that the rest of the code recovers as though there were an
|
|
// ';' after the definition.
|
|
PP.EnterToken(Tok);
|
|
Tok.setKind(tok::semi);
|
|
}
|
|
}
|
|
|
|
/// isKnownToBeTypeSpecifier - Return true if we know that the specified token
|
|
/// is definitely a type-specifier. Return false if it isn't part of a type
|
|
/// specifier or if we're not sure.
|
|
bool Parser::isKnownToBeTypeSpecifier(const Token &Tok) const {
|
|
switch (Tok.getKind()) {
|
|
default: return false;
|
|
// type-specifiers
|
|
case tok::kw_short:
|
|
case tok::kw_long:
|
|
case tok::kw___int64:
|
|
case tok::kw___int128:
|
|
case tok::kw_signed:
|
|
case tok::kw_unsigned:
|
|
case tok::kw__Complex:
|
|
case tok::kw__Imaginary:
|
|
case tok::kw_void:
|
|
case tok::kw_char:
|
|
case tok::kw_wchar_t:
|
|
case tok::kw_char8_t:
|
|
case tok::kw_char16_t:
|
|
case tok::kw_char32_t:
|
|
case tok::kw_int:
|
|
case tok::kw_half:
|
|
case tok::kw_float:
|
|
case tok::kw_double:
|
|
case tok::kw__Accum:
|
|
case tok::kw__Fract:
|
|
case tok::kw__Float16:
|
|
case tok::kw___float128:
|
|
case tok::kw_bool:
|
|
case tok::kw__Bool:
|
|
case tok::kw__Decimal32:
|
|
case tok::kw__Decimal64:
|
|
case tok::kw__Decimal128:
|
|
case tok::kw___vector:
|
|
#define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
|
|
#include "clang/Basic/OpenCLImageTypes.def"
|
|
|
|
// struct-or-union-specifier (C99) or class-specifier (C++)
|
|
case tok::kw_class:
|
|
case tok::kw_struct:
|
|
case tok::kw___interface:
|
|
case tok::kw_union:
|
|
// enum-specifier
|
|
case tok::kw_enum:
|
|
|
|
// typedef-name
|
|
case tok::annot_typename:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/// isTypeSpecifierQualifier - Return true if the current token could be the
|
|
/// start of a specifier-qualifier-list.
|
|
bool Parser::isTypeSpecifierQualifier() {
|
|
switch (Tok.getKind()) {
|
|
default: return false;
|
|
|
|
case tok::identifier: // foo::bar
|
|
if (TryAltiVecVectorToken())
|
|
return true;
|
|
LLVM_FALLTHROUGH;
|
|
case tok::kw_typename: // typename T::type
|
|
// Annotate typenames and C++ scope specifiers. If we get one, just
|
|
// recurse to handle whatever we get.
|
|
if (TryAnnotateTypeOrScopeToken())
|
|
return true;
|
|
if (Tok.is(tok::identifier))
|
|
return false;
|
|
return isTypeSpecifierQualifier();
|
|
|
|
case tok::coloncolon: // ::foo::bar
|
|
if (NextToken().is(tok::kw_new) || // ::new
|
|
NextToken().is(tok::kw_delete)) // ::delete
|
|
return false;
|
|
|
|
if (TryAnnotateTypeOrScopeToken())
|
|
return true;
|
|
return isTypeSpecifierQualifier();
|
|
|
|
// GNU attributes support.
|
|
case tok::kw___attribute:
|
|
// GNU typeof support.
|
|
case tok::kw_typeof:
|
|
|
|
// type-specifiers
|
|
case tok::kw_short:
|
|
case tok::kw_long:
|
|
case tok::kw___int64:
|
|
case tok::kw___int128:
|
|
case tok::kw_signed:
|
|
case tok::kw_unsigned:
|
|
case tok::kw__Complex:
|
|
case tok::kw__Imaginary:
|
|
case tok::kw_void:
|
|
case tok::kw_char:
|
|
case tok::kw_wchar_t:
|
|
case tok::kw_char8_t:
|
|
case tok::kw_char16_t:
|
|
case tok::kw_char32_t:
|
|
case tok::kw_int:
|
|
case tok::kw_half:
|
|
case tok::kw_float:
|
|
case tok::kw_double:
|
|
case tok::kw__Accum:
|
|
case tok::kw__Fract:
|
|
case tok::kw__Float16:
|
|
case tok::kw___float128:
|
|
case tok::kw_bool:
|
|
case tok::kw__Bool:
|
|
case tok::kw__Decimal32:
|
|
case tok::kw__Decimal64:
|
|
case tok::kw__Decimal128:
|
|
case tok::kw___vector:
|
|
#define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
|
|
#include "clang/Basic/OpenCLImageTypes.def"
|
|
|
|
// struct-or-union-specifier (C99) or class-specifier (C++)
|
|
case tok::kw_class:
|
|
case tok::kw_struct:
|
|
case tok::kw___interface:
|
|
case tok::kw_union:
|
|
// enum-specifier
|
|
case tok::kw_enum:
|
|
|
|
// type-qualifier
|
|
case tok::kw_const:
|
|
case tok::kw_volatile:
|
|
case tok::kw_restrict:
|
|
case tok::kw__Sat:
|
|
|
|
// Debugger support.
|
|
case tok::kw___unknown_anytype:
|
|
|
|
// typedef-name
|
|
case tok::annot_typename:
|
|
return true;
|
|
|
|
// GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'.
|
|
case tok::less:
|
|
return getLangOpts().ObjC;
|
|
|
|
case tok::kw___cdecl:
|
|
case tok::kw___stdcall:
|
|
case tok::kw___fastcall:
|
|
case tok::kw___thiscall:
|
|
case tok::kw___regcall:
|
|
case tok::kw___vectorcall:
|
|
case tok::kw___w64:
|
|
case tok::kw___ptr64:
|
|
case tok::kw___ptr32:
|
|
case tok::kw___pascal:
|
|
case tok::kw___unaligned:
|
|
|
|
case tok::kw__Nonnull:
|
|
case tok::kw__Nullable:
|
|
case tok::kw__Null_unspecified:
|
|
|
|
case tok::kw___kindof:
|
|
|
|
case tok::kw___private:
|
|
case tok::kw___local:
|
|
case tok::kw___global:
|
|
case tok::kw___constant:
|
|
case tok::kw___generic:
|
|
case tok::kw___read_only:
|
|
case tok::kw___read_write:
|
|
case tok::kw___write_only:
|
|
|
|
return true;
|
|
|
|
// C11 _Atomic
|
|
case tok::kw__Atomic:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/// isDeclarationSpecifier() - Return true if the current token is part of a
|
|
/// declaration specifier.
|
|
///
|
|
/// \param DisambiguatingWithExpression True to indicate that the purpose of
|
|
/// this check is to disambiguate between an expression and a declaration.
|
|
bool Parser::isDeclarationSpecifier(bool DisambiguatingWithExpression) {
|
|
switch (Tok.getKind()) {
|
|
default: return false;
|
|
|
|
case tok::kw_pipe:
|
|
return getLangOpts().OpenCL && (getLangOpts().OpenCLVersion >= 200);
|
|
|
|
case tok::identifier: // foo::bar
|
|
// Unfortunate hack to support "Class.factoryMethod" notation.
|
|
if (getLangOpts().ObjC && NextToken().is(tok::period))
|
|
return false;
|
|
if (TryAltiVecVectorToken())
|
|
return true;
|
|
LLVM_FALLTHROUGH;
|
|
case tok::kw_decltype: // decltype(T())::type
|
|
case tok::kw_typename: // typename T::type
|
|
// Annotate typenames and C++ scope specifiers. If we get one, just
|
|
// recurse to handle whatever we get.
|
|
if (TryAnnotateTypeOrScopeToken())
|
|
return true;
|
|
if (Tok.is(tok::identifier))
|
|
return false;
|
|
|
|
// If we're in Objective-C and we have an Objective-C class type followed
|
|
// by an identifier and then either ':' or ']', in a place where an
|
|
// expression is permitted, then this is probably a class message send
|
|
// missing the initial '['. In this case, we won't consider this to be
|
|
// the start of a declaration.
|
|
if (DisambiguatingWithExpression &&
|
|
isStartOfObjCClassMessageMissingOpenBracket())
|
|
return false;
|
|
|
|
return isDeclarationSpecifier();
|
|
|
|
case tok::coloncolon: // ::foo::bar
|
|
if (NextToken().is(tok::kw_new) || // ::new
|
|
NextToken().is(tok::kw_delete)) // ::delete
|
|
return false;
|
|
|
|
// Annotate typenames and C++ scope specifiers. If we get one, just
|
|
// recurse to handle whatever we get.
|
|
if (TryAnnotateTypeOrScopeToken())
|
|
return true;
|
|
return isDeclarationSpecifier();
|
|
|
|
// storage-class-specifier
|
|
case tok::kw_typedef:
|
|
case tok::kw_extern:
|
|
case tok::kw___private_extern__:
|
|
case tok::kw_static:
|
|
case tok::kw_auto:
|
|
case tok::kw___auto_type:
|
|
case tok::kw_register:
|
|
case tok::kw___thread:
|
|
case tok::kw_thread_local:
|
|
case tok::kw__Thread_local:
|
|
|
|
// Modules
|
|
case tok::kw___module_private__:
|
|
|
|
// Debugger support
|
|
case tok::kw___unknown_anytype:
|
|
|
|
// type-specifiers
|
|
case tok::kw_short:
|
|
case tok::kw_long:
|
|
case tok::kw___int64:
|
|
case tok::kw___int128:
|
|
case tok::kw_signed:
|
|
case tok::kw_unsigned:
|
|
case tok::kw__Complex:
|
|
case tok::kw__Imaginary:
|
|
case tok::kw_void:
|
|
case tok::kw_char:
|
|
case tok::kw_wchar_t:
|
|
case tok::kw_char8_t:
|
|
case tok::kw_char16_t:
|
|
case tok::kw_char32_t:
|
|
|
|
case tok::kw_int:
|
|
case tok::kw_half:
|
|
case tok::kw_float:
|
|
case tok::kw_double:
|
|
case tok::kw__Accum:
|
|
case tok::kw__Fract:
|
|
case tok::kw__Float16:
|
|
case tok::kw___float128:
|
|
case tok::kw_bool:
|
|
case tok::kw__Bool:
|
|
case tok::kw__Decimal32:
|
|
case tok::kw__Decimal64:
|
|
case tok::kw__Decimal128:
|
|
case tok::kw___vector:
|
|
|
|
// struct-or-union-specifier (C99) or class-specifier (C++)
|
|
case tok::kw_class:
|
|
case tok::kw_struct:
|
|
case tok::kw_union:
|
|
case tok::kw___interface:
|
|
// enum-specifier
|
|
case tok::kw_enum:
|
|
|
|
// type-qualifier
|
|
case tok::kw_const:
|
|
case tok::kw_volatile:
|
|
case tok::kw_restrict:
|
|
case tok::kw__Sat:
|
|
|
|
// function-specifier
|
|
case tok::kw_inline:
|
|
case tok::kw_virtual:
|
|
case tok::kw_explicit:
|
|
case tok::kw__Noreturn:
|
|
|
|
// alignment-specifier
|
|
case tok::kw__Alignas:
|
|
|
|
// friend keyword.
|
|
case tok::kw_friend:
|
|
|
|
// static_assert-declaration
|
|
case tok::kw__Static_assert:
|
|
|
|
// GNU typeof support.
|
|
case tok::kw_typeof:
|
|
|
|
// GNU attributes.
|
|
case tok::kw___attribute:
|
|
|
|
// C++11 decltype and constexpr.
|
|
case tok::annot_decltype:
|
|
case tok::kw_constexpr:
|
|
|
|
// C11 _Atomic
|
|
case tok::kw__Atomic:
|
|
return true;
|
|
|
|
// GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'.
|
|
case tok::less:
|
|
return getLangOpts().ObjC;
|
|
|
|
// typedef-name
|
|
case tok::annot_typename:
|
|
return !DisambiguatingWithExpression ||
|
|
!isStartOfObjCClassMessageMissingOpenBracket();
|
|
|
|
case tok::kw___declspec:
|
|
case tok::kw___cdecl:
|
|
case tok::kw___stdcall:
|
|
case tok::kw___fastcall:
|
|
case tok::kw___thiscall:
|
|
case tok::kw___regcall:
|
|
case tok::kw___vectorcall:
|
|
case tok::kw___w64:
|
|
case tok::kw___sptr:
|
|
case tok::kw___uptr:
|
|
case tok::kw___ptr64:
|
|
case tok::kw___ptr32:
|
|
case tok::kw___forceinline:
|
|
case tok::kw___pascal:
|
|
case tok::kw___unaligned:
|
|
|
|
case tok::kw__Nonnull:
|
|
case tok::kw__Nullable:
|
|
case tok::kw__Null_unspecified:
|
|
|
|
case tok::kw___kindof:
|
|
|
|
case tok::kw___private:
|
|
case tok::kw___local:
|
|
case tok::kw___global:
|
|
case tok::kw___constant:
|
|
case tok::kw___generic:
|
|
case tok::kw___read_only:
|
|
case tok::kw___read_write:
|
|
case tok::kw___write_only:
|
|
#define GENERIC_IMAGE_TYPE(ImgType, Id) case tok::kw_##ImgType##_t:
|
|
#include "clang/Basic/OpenCLImageTypes.def"
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
bool Parser::isConstructorDeclarator(bool IsUnqualified, bool DeductionGuide) {
|
|
TentativeParsingAction TPA(*this);
|
|
|
|
// Parse the C++ scope specifier.
|
|
CXXScopeSpec SS;
|
|
if (ParseOptionalCXXScopeSpecifier(SS, nullptr,
|
|
/*EnteringContext=*/true)) {
|
|
TPA.Revert();
|
|
return false;
|
|
}
|
|
|
|
// Parse the constructor name.
|
|
if (Tok.is(tok::identifier)) {
|
|
// We already know that we have a constructor name; just consume
|
|
// the token.
|
|
ConsumeToken();
|
|
} else if (Tok.is(tok::annot_template_id)) {
|
|
ConsumeAnnotationToken();
|
|
} else {
|
|
TPA.Revert();
|
|
return false;
|
|
}
|
|
|
|
// There may be attributes here, appertaining to the constructor name or type
|
|
// we just stepped past.
|
|
SkipCXX11Attributes();
|
|
|
|
// Current class name must be followed by a left parenthesis.
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
TPA.Revert();
|
|
return false;
|
|
}
|
|
ConsumeParen();
|
|
|
|
// A right parenthesis, or ellipsis followed by a right parenthesis signals
|
|
// that we have a constructor.
|
|
if (Tok.is(tok::r_paren) ||
|
|
(Tok.is(tok::ellipsis) && NextToken().is(tok::r_paren))) {
|
|
TPA.Revert();
|
|
return true;
|
|
}
|
|
|
|
// A C++11 attribute here signals that we have a constructor, and is an
|
|
// attribute on the first constructor parameter.
|
|
if (getLangOpts().CPlusPlus11 &&
|
|
isCXX11AttributeSpecifier(/*Disambiguate*/ false,
|
|
/*OuterMightBeMessageSend*/ true)) {
|
|
TPA.Revert();
|
|
return true;
|
|
}
|
|
|
|
// If we need to, enter the specified scope.
|
|
DeclaratorScopeObj DeclScopeObj(*this, SS);
|
|
if (SS.isSet() && Actions.ShouldEnterDeclaratorScope(getCurScope(), SS))
|
|
DeclScopeObj.EnterDeclaratorScope();
|
|
|
|
// Optionally skip Microsoft attributes.
|
|
ParsedAttributes Attrs(AttrFactory);
|
|
MaybeParseMicrosoftAttributes(Attrs);
|
|
|
|
// Check whether the next token(s) are part of a declaration
|
|
// specifier, in which case we have the start of a parameter and,
|
|
// therefore, we know that this is a constructor.
|
|
bool IsConstructor = false;
|
|
if (isDeclarationSpecifier())
|
|
IsConstructor = true;
|
|
else if (Tok.is(tok::identifier) ||
|
|
(Tok.is(tok::annot_cxxscope) && NextToken().is(tok::identifier))) {
|
|
// We've seen "C ( X" or "C ( X::Y", but "X" / "X::Y" is not a type.
|
|
// This might be a parenthesized member name, but is more likely to
|
|
// be a constructor declaration with an invalid argument type. Keep
|
|
// looking.
|
|
if (Tok.is(tok::annot_cxxscope))
|
|
ConsumeAnnotationToken();
|
|
ConsumeToken();
|
|
|
|
// If this is not a constructor, we must be parsing a declarator,
|
|
// which must have one of the following syntactic forms (see the
|
|
// grammar extract at the start of ParseDirectDeclarator):
|
|
switch (Tok.getKind()) {
|
|
case tok::l_paren:
|
|
// C(X ( int));
|
|
case tok::l_square:
|
|
// C(X [ 5]);
|
|
// C(X [ [attribute]]);
|
|
case tok::coloncolon:
|
|
// C(X :: Y);
|
|
// C(X :: *p);
|
|
// Assume this isn't a constructor, rather than assuming it's a
|
|
// constructor with an unnamed parameter of an ill-formed type.
|
|
break;
|
|
|
|
case tok::r_paren:
|
|
// C(X )
|
|
|
|
// Skip past the right-paren and any following attributes to get to
|
|
// the function body or trailing-return-type.
|
|
ConsumeParen();
|
|
SkipCXX11Attributes();
|
|
|
|
if (DeductionGuide) {
|
|
// C(X) -> ... is a deduction guide.
|
|
IsConstructor = Tok.is(tok::arrow);
|
|
break;
|
|
}
|
|
if (Tok.is(tok::colon) || Tok.is(tok::kw_try)) {
|
|
// Assume these were meant to be constructors:
|
|
// C(X) : (the name of a bit-field cannot be parenthesized).
|
|
// C(X) try (this is otherwise ill-formed).
|
|
IsConstructor = true;
|
|
}
|
|
if (Tok.is(tok::semi) || Tok.is(tok::l_brace)) {
|
|
// If we have a constructor name within the class definition,
|
|
// assume these were meant to be constructors:
|
|
// C(X) {
|
|
// C(X) ;
|
|
// ... because otherwise we would be declaring a non-static data
|
|
// member that is ill-formed because it's of the same type as its
|
|
// surrounding class.
|
|
//
|
|
// FIXME: We can actually do this whether or not the name is qualified,
|
|
// because if it is qualified in this context it must be being used as
|
|
// a constructor name.
|
|
// currently, so we're somewhat conservative here.
|
|
IsConstructor = IsUnqualified;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
IsConstructor = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
TPA.Revert();
|
|
return IsConstructor;
|
|
}
|
|
|
|
/// ParseTypeQualifierListOpt
|
|
/// type-qualifier-list: [C99 6.7.5]
|
|
/// type-qualifier
|
|
/// [vendor] attributes
|
|
/// [ only if AttrReqs & AR_VendorAttributesParsed ]
|
|
/// type-qualifier-list type-qualifier
|
|
/// [vendor] type-qualifier-list attributes
|
|
/// [ only if AttrReqs & AR_VendorAttributesParsed ]
|
|
/// [C++0x] attribute-specifier[opt] is allowed before cv-qualifier-seq
|
|
/// [ only if AttReqs & AR_CXX11AttributesParsed ]
|
|
/// Note: vendor can be GNU, MS, etc and can be explicitly controlled via
|
|
/// AttrRequirements bitmask values.
|
|
void Parser::ParseTypeQualifierListOpt(
|
|
DeclSpec &DS, unsigned AttrReqs, bool AtomicAllowed,
|
|
bool IdentifierRequired,
|
|
Optional<llvm::function_ref<void()>> CodeCompletionHandler) {
|
|
if (standardAttributesAllowed() && (AttrReqs & AR_CXX11AttributesParsed) &&
|
|
isCXX11AttributeSpecifier()) {
|
|
ParsedAttributesWithRange attrs(AttrFactory);
|
|
ParseCXX11Attributes(attrs);
|
|
DS.takeAttributesFrom(attrs);
|
|
}
|
|
|
|
SourceLocation EndLoc;
|
|
|
|
while (1) {
|
|
bool isInvalid = false;
|
|
const char *PrevSpec = nullptr;
|
|
unsigned DiagID = 0;
|
|
SourceLocation Loc = Tok.getLocation();
|
|
|
|
switch (Tok.getKind()) {
|
|
case tok::code_completion:
|
|
if (CodeCompletionHandler)
|
|
(*CodeCompletionHandler)();
|
|
else
|
|
Actions.CodeCompleteTypeQualifiers(DS);
|
|
return cutOffParsing();
|
|
|
|
case tok::kw_const:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_const , Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
case tok::kw_volatile:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
case tok::kw_restrict:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
case tok::kw__Atomic:
|
|
if (!AtomicAllowed)
|
|
goto DoneWithTypeQuals;
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_atomic, Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
|
|
// OpenCL qualifiers:
|
|
case tok::kw___private:
|
|
case tok::kw___global:
|
|
case tok::kw___local:
|
|
case tok::kw___constant:
|
|
case tok::kw___generic:
|
|
case tok::kw___read_only:
|
|
case tok::kw___write_only:
|
|
case tok::kw___read_write:
|
|
ParseOpenCLQualifiers(DS.getAttributes());
|
|
break;
|
|
|
|
case tok::kw___unaligned:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_unaligned, Loc, PrevSpec, DiagID,
|
|
getLangOpts());
|
|
break;
|
|
case tok::kw___uptr:
|
|
// GNU libc headers in C mode use '__uptr' as an identifier which conflicts
|
|
// with the MS modifier keyword.
|
|
if ((AttrReqs & AR_DeclspecAttributesParsed) && !getLangOpts().CPlusPlus &&
|
|
IdentifierRequired && DS.isEmpty() && NextToken().is(tok::semi)) {
|
|
if (TryKeywordIdentFallback(false))
|
|
continue;
|
|
}
|
|
LLVM_FALLTHROUGH;
|
|
case tok::kw___sptr:
|
|
case tok::kw___w64:
|
|
case tok::kw___ptr64:
|
|
case tok::kw___ptr32:
|
|
case tok::kw___cdecl:
|
|
case tok::kw___stdcall:
|
|
case tok::kw___fastcall:
|
|
case tok::kw___thiscall:
|
|
case tok::kw___regcall:
|
|
case tok::kw___vectorcall:
|
|
if (AttrReqs & AR_DeclspecAttributesParsed) {
|
|
ParseMicrosoftTypeAttributes(DS.getAttributes());
|
|
continue;
|
|
}
|
|
goto DoneWithTypeQuals;
|
|
case tok::kw___pascal:
|
|
if (AttrReqs & AR_VendorAttributesParsed) {
|
|
ParseBorlandTypeAttributes(DS.getAttributes());
|
|
continue;
|
|
}
|
|
goto DoneWithTypeQuals;
|
|
|
|
// Nullability type specifiers.
|
|
case tok::kw__Nonnull:
|
|
case tok::kw__Nullable:
|
|
case tok::kw__Null_unspecified:
|
|
ParseNullabilityTypeSpecifiers(DS.getAttributes());
|
|
continue;
|
|
|
|
// Objective-C 'kindof' types.
|
|
case tok::kw___kindof:
|
|
DS.getAttributes().addNew(Tok.getIdentifierInfo(), Loc, nullptr, Loc,
|
|
nullptr, 0, ParsedAttr::AS_Keyword);
|
|
(void)ConsumeToken();
|
|
continue;
|
|
|
|
case tok::kw___attribute:
|
|
if (AttrReqs & AR_GNUAttributesParsedAndRejected)
|
|
// When GNU attributes are expressly forbidden, diagnose their usage.
|
|
Diag(Tok, diag::err_attributes_not_allowed);
|
|
|
|
// Parse the attributes even if they are rejected to ensure that error
|
|
// recovery is graceful.
|
|
if (AttrReqs & AR_GNUAttributesParsed ||
|
|
AttrReqs & AR_GNUAttributesParsedAndRejected) {
|
|
ParseGNUAttributes(DS.getAttributes());
|
|
continue; // do *not* consume the next token!
|
|
}
|
|
// otherwise, FALL THROUGH!
|
|
LLVM_FALLTHROUGH;
|
|
default:
|
|
DoneWithTypeQuals:
|
|
// If this is not a type-qualifier token, we're done reading type
|
|
// qualifiers. First verify that DeclSpec's are consistent.
|
|
DS.Finish(Actions, Actions.getASTContext().getPrintingPolicy());
|
|
if (EndLoc.isValid())
|
|
DS.SetRangeEnd(EndLoc);
|
|
return;
|
|
}
|
|
|
|
// If the specifier combination wasn't legal, issue a diagnostic.
|
|
if (isInvalid) {
|
|
assert(PrevSpec && "Method did not return previous specifier!");
|
|
Diag(Tok, DiagID) << PrevSpec;
|
|
}
|
|
EndLoc = ConsumeToken();
|
|
}
|
|
}
|
|
|
|
/// ParseDeclarator - Parse and verify a newly-initialized declarator.
|
|
///
|
|
void Parser::ParseDeclarator(Declarator &D) {
|
|
/// This implements the 'declarator' production in the C grammar, then checks
|
|
/// for well-formedness and issues diagnostics.
|
|
ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
|
|
}
|
|
|
|
static bool isPtrOperatorToken(tok::TokenKind Kind, const LangOptions &Lang,
|
|
DeclaratorContext TheContext) {
|
|
if (Kind == tok::star || Kind == tok::caret)
|
|
return true;
|
|
|
|
if ((Kind == tok::kw_pipe) && Lang.OpenCL && (Lang.OpenCLVersion >= 200))
|
|
return true;
|
|
|
|
if (!Lang.CPlusPlus)
|
|
return false;
|
|
|
|
if (Kind == tok::amp)
|
|
return true;
|
|
|
|
// We parse rvalue refs in C++03, because otherwise the errors are scary.
|
|
// But we must not parse them in conversion-type-ids and new-type-ids, since
|
|
// those can be legitimately followed by a && operator.
|
|
// (The same thing can in theory happen after a trailing-return-type, but
|
|
// since those are a C++11 feature, there is no rejects-valid issue there.)
|
|
if (Kind == tok::ampamp)
|
|
return Lang.CPlusPlus11 ||
|
|
(TheContext != DeclaratorContext::ConversionIdContext &&
|
|
TheContext != DeclaratorContext::CXXNewContext);
|
|
|
|
return false;
|
|
}
|
|
|
|
// Indicates whether the given declarator is a pipe declarator.
|
|
static bool isPipeDeclerator(const Declarator &D) {
|
|
const unsigned NumTypes = D.getNumTypeObjects();
|
|
|
|
for (unsigned Idx = 0; Idx != NumTypes; ++Idx)
|
|
if (DeclaratorChunk::Pipe == D.getTypeObject(Idx).Kind)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/// ParseDeclaratorInternal - Parse a C or C++ declarator. The direct-declarator
|
|
/// is parsed by the function passed to it. Pass null, and the direct-declarator
|
|
/// isn't parsed at all, making this function effectively parse the C++
|
|
/// ptr-operator production.
|
|
///
|
|
/// If the grammar of this construct is extended, matching changes must also be
|
|
/// made to TryParseDeclarator and MightBeDeclarator, and possibly to
|
|
/// isConstructorDeclarator.
|
|
///
|
|
/// declarator: [C99 6.7.5] [C++ 8p4, dcl.decl]
|
|
/// [C] pointer[opt] direct-declarator
|
|
/// [C++] direct-declarator
|
|
/// [C++] ptr-operator declarator
|
|
///
|
|
/// pointer: [C99 6.7.5]
|
|
/// '*' type-qualifier-list[opt]
|
|
/// '*' type-qualifier-list[opt] pointer
|
|
///
|
|
/// ptr-operator:
|
|
/// '*' cv-qualifier-seq[opt]
|
|
/// '&'
|
|
/// [C++0x] '&&'
|
|
/// [GNU] '&' restrict[opt] attributes[opt]
|
|
/// [GNU?] '&&' restrict[opt] attributes[opt]
|
|
/// '::'[opt] nested-name-specifier '*' cv-qualifier-seq[opt]
|
|
void Parser::ParseDeclaratorInternal(Declarator &D,
|
|
DirectDeclParseFunction DirectDeclParser) {
|
|
if (Diags.hasAllExtensionsSilenced())
|
|
D.setExtension();
|
|
|
|
// C++ member pointers start with a '::' or a nested-name.
|
|
// Member pointers get special handling, since there's no place for the
|
|
// scope spec in the generic path below.
|
|
if (getLangOpts().CPlusPlus &&
|
|
(Tok.is(tok::coloncolon) || Tok.is(tok::kw_decltype) ||
|
|
(Tok.is(tok::identifier) &&
|
|
(NextToken().is(tok::coloncolon) || NextToken().is(tok::less))) ||
|
|
Tok.is(tok::annot_cxxscope))) {
|
|
bool EnteringContext =
|
|
D.getContext() == DeclaratorContext::FileContext ||
|
|
D.getContext() == DeclaratorContext::MemberContext;
|
|
CXXScopeSpec SS;
|
|
ParseOptionalCXXScopeSpecifier(SS, nullptr, EnteringContext);
|
|
|
|
if (SS.isNotEmpty()) {
|
|
if (Tok.isNot(tok::star)) {
|
|
// The scope spec really belongs to the direct-declarator.
|
|
if (D.mayHaveIdentifier())
|
|
D.getCXXScopeSpec() = SS;
|
|
else
|
|
AnnotateScopeToken(SS, true);
|
|
|
|
if (DirectDeclParser)
|
|
(this->*DirectDeclParser)(D);
|
|
return;
|
|
}
|
|
|
|
SourceLocation Loc = ConsumeToken();
|
|
D.SetRangeEnd(Loc);
|
|
DeclSpec DS(AttrFactory);
|
|
ParseTypeQualifierListOpt(DS);
|
|
D.ExtendWithDeclSpec(DS);
|
|
|
|
// Recurse to parse whatever is left.
|
|
ParseDeclaratorInternal(D, DirectDeclParser);
|
|
|
|
// Sema will have to catch (syntactically invalid) pointers into global
|
|
// scope. It has to catch pointers into namespace scope anyway.
|
|
D.AddTypeInfo(DeclaratorChunk::getMemberPointer(
|
|
SS, DS.getTypeQualifiers(), DS.getEndLoc()),
|
|
std::move(DS.getAttributes()),
|
|
/* Don't replace range end. */ SourceLocation());
|
|
return;
|
|
}
|
|
}
|
|
|
|
tok::TokenKind Kind = Tok.getKind();
|
|
|
|
if (D.getDeclSpec().isTypeSpecPipe() && !isPipeDeclerator(D)) {
|
|
DeclSpec DS(AttrFactory);
|
|
ParseTypeQualifierListOpt(DS);
|
|
|
|
D.AddTypeInfo(
|
|
DeclaratorChunk::getPipe(DS.getTypeQualifiers(), DS.getPipeLoc()),
|
|
std::move(DS.getAttributes()), SourceLocation());
|
|
}
|
|
|
|
// Not a pointer, C++ reference, or block.
|
|
if (!isPtrOperatorToken(Kind, getLangOpts(), D.getContext())) {
|
|
if (DirectDeclParser)
|
|
(this->*DirectDeclParser)(D);
|
|
return;
|
|
}
|
|
|
|
// Otherwise, '*' -> pointer, '^' -> block, '&' -> lvalue reference,
|
|
// '&&' -> rvalue reference
|
|
SourceLocation Loc = ConsumeToken(); // Eat the *, ^, & or &&.
|
|
D.SetRangeEnd(Loc);
|
|
|
|
if (Kind == tok::star || Kind == tok::caret) {
|
|
// Is a pointer.
|
|
DeclSpec DS(AttrFactory);
|
|
|
|
// GNU attributes are not allowed here in a new-type-id, but Declspec and
|
|
// C++11 attributes are allowed.
|
|
unsigned Reqs = AR_CXX11AttributesParsed | AR_DeclspecAttributesParsed |
|
|
((D.getContext() != DeclaratorContext::CXXNewContext)
|
|
? AR_GNUAttributesParsed
|
|
: AR_GNUAttributesParsedAndRejected);
|
|
ParseTypeQualifierListOpt(DS, Reqs, true, !D.mayOmitIdentifier());
|
|
D.ExtendWithDeclSpec(DS);
|
|
|
|
// Recursively parse the declarator.
|
|
ParseDeclaratorInternal(D, DirectDeclParser);
|
|
if (Kind == tok::star)
|
|
// Remember that we parsed a pointer type, and remember the type-quals.
|
|
D.AddTypeInfo(DeclaratorChunk::getPointer(
|
|
DS.getTypeQualifiers(), Loc, DS.getConstSpecLoc(),
|
|
DS.getVolatileSpecLoc(), DS.getRestrictSpecLoc(),
|
|
DS.getAtomicSpecLoc(), DS.getUnalignedSpecLoc()),
|
|
std::move(DS.getAttributes()), SourceLocation());
|
|
else
|
|
// Remember that we parsed a Block type, and remember the type-quals.
|
|
D.AddTypeInfo(
|
|
DeclaratorChunk::getBlockPointer(DS.getTypeQualifiers(), Loc),
|
|
std::move(DS.getAttributes()), SourceLocation());
|
|
} else {
|
|
// Is a reference
|
|
DeclSpec DS(AttrFactory);
|
|
|
|
// Complain about rvalue references in C++03, but then go on and build
|
|
// the declarator.
|
|
if (Kind == tok::ampamp)
|
|
Diag(Loc, getLangOpts().CPlusPlus11 ?
|
|
diag::warn_cxx98_compat_rvalue_reference :
|
|
diag::ext_rvalue_reference);
|
|
|
|
// GNU-style and C++11 attributes are allowed here, as is restrict.
|
|
ParseTypeQualifierListOpt(DS);
|
|
D.ExtendWithDeclSpec(DS);
|
|
|
|
// C++ 8.3.2p1: cv-qualified references are ill-formed except when the
|
|
// cv-qualifiers are introduced through the use of a typedef or of a
|
|
// template type argument, in which case the cv-qualifiers are ignored.
|
|
if (DS.getTypeQualifiers() != DeclSpec::TQ_unspecified) {
|
|
if (DS.getTypeQualifiers() & DeclSpec::TQ_const)
|
|
Diag(DS.getConstSpecLoc(),
|
|
diag::err_invalid_reference_qualifier_application) << "const";
|
|
if (DS.getTypeQualifiers() & DeclSpec::TQ_volatile)
|
|
Diag(DS.getVolatileSpecLoc(),
|
|
diag::err_invalid_reference_qualifier_application) << "volatile";
|
|
// 'restrict' is permitted as an extension.
|
|
if (DS.getTypeQualifiers() & DeclSpec::TQ_atomic)
|
|
Diag(DS.getAtomicSpecLoc(),
|
|
diag::err_invalid_reference_qualifier_application) << "_Atomic";
|
|
}
|
|
|
|
// Recursively parse the declarator.
|
|
ParseDeclaratorInternal(D, DirectDeclParser);
|
|
|
|
if (D.getNumTypeObjects() > 0) {
|
|
// C++ [dcl.ref]p4: There shall be no references to references.
|
|
DeclaratorChunk& InnerChunk = D.getTypeObject(D.getNumTypeObjects() - 1);
|
|
if (InnerChunk.Kind == DeclaratorChunk::Reference) {
|
|
if (const IdentifierInfo *II = D.getIdentifier())
|
|
Diag(InnerChunk.Loc, diag::err_illegal_decl_reference_to_reference)
|
|
<< II;
|
|
else
|
|
Diag(InnerChunk.Loc, diag::err_illegal_decl_reference_to_reference)
|
|
<< "type name";
|
|
|
|
// Once we've complained about the reference-to-reference, we
|
|
// can go ahead and build the (technically ill-formed)
|
|
// declarator: reference collapsing will take care of it.
|
|
}
|
|
}
|
|
|
|
// Remember that we parsed a reference type.
|
|
D.AddTypeInfo(DeclaratorChunk::getReference(DS.getTypeQualifiers(), Loc,
|
|
Kind == tok::amp),
|
|
std::move(DS.getAttributes()), SourceLocation());
|
|
}
|
|
}
|
|
|
|
// When correcting from misplaced brackets before the identifier, the location
|
|
// is saved inside the declarator so that other diagnostic messages can use
|
|
// them. This extracts and returns that location, or returns the provided
|
|
// location if a stored location does not exist.
|
|
static SourceLocation getMissingDeclaratorIdLoc(Declarator &D,
|
|
SourceLocation Loc) {
|
|
if (D.getName().StartLocation.isInvalid() &&
|
|
D.getName().EndLocation.isValid())
|
|
return D.getName().EndLocation;
|
|
|
|
return Loc;
|
|
}
|
|
|
|
/// ParseDirectDeclarator
|
|
/// direct-declarator: [C99 6.7.5]
|
|
/// [C99] identifier
|
|
/// '(' declarator ')'
|
|
/// [GNU] '(' attributes declarator ')'
|
|
/// [C90] direct-declarator '[' constant-expression[opt] ']'
|
|
/// [C99] direct-declarator '[' type-qual-list[opt] assignment-expr[opt] ']'
|
|
/// [C99] direct-declarator '[' 'static' type-qual-list[opt] assign-expr ']'
|
|
/// [C99] direct-declarator '[' type-qual-list 'static' assignment-expr ']'
|
|
/// [C99] direct-declarator '[' type-qual-list[opt] '*' ']'
|
|
/// [C++11] direct-declarator '[' constant-expression[opt] ']'
|
|
/// attribute-specifier-seq[opt]
|
|
/// direct-declarator '(' parameter-type-list ')'
|
|
/// direct-declarator '(' identifier-list[opt] ')'
|
|
/// [GNU] direct-declarator '(' parameter-forward-declarations
|
|
/// parameter-type-list[opt] ')'
|
|
/// [C++] direct-declarator '(' parameter-declaration-clause ')'
|
|
/// cv-qualifier-seq[opt] exception-specification[opt]
|
|
/// [C++11] direct-declarator '(' parameter-declaration-clause ')'
|
|
/// attribute-specifier-seq[opt] cv-qualifier-seq[opt]
|
|
/// ref-qualifier[opt] exception-specification[opt]
|
|
/// [C++] declarator-id
|
|
/// [C++11] declarator-id attribute-specifier-seq[opt]
|
|
///
|
|
/// declarator-id: [C++ 8]
|
|
/// '...'[opt] id-expression
|
|
/// '::'[opt] nested-name-specifier[opt] type-name
|
|
///
|
|
/// id-expression: [C++ 5.1]
|
|
/// unqualified-id
|
|
/// qualified-id
|
|
///
|
|
/// unqualified-id: [C++ 5.1]
|
|
/// identifier
|
|
/// operator-function-id
|
|
/// conversion-function-id
|
|
/// '~' class-name
|
|
/// template-id
|
|
///
|
|
/// C++17 adds the following, which we also handle here:
|
|
///
|
|
/// simple-declaration:
|
|
/// <decl-spec> '[' identifier-list ']' brace-or-equal-initializer ';'
|
|
///
|
|
/// Note, any additional constructs added here may need corresponding changes
|
|
/// in isConstructorDeclarator.
|
|
void Parser::ParseDirectDeclarator(Declarator &D) {
|
|
DeclaratorScopeObj DeclScopeObj(*this, D.getCXXScopeSpec());
|
|
|
|
if (getLangOpts().CPlusPlus && D.mayHaveIdentifier()) {
|
|
// This might be a C++17 structured binding.
|
|
if (Tok.is(tok::l_square) && !D.mayOmitIdentifier() &&
|
|
D.getCXXScopeSpec().isEmpty())
|
|
return ParseDecompositionDeclarator(D);
|
|
|
|
// Don't parse FOO:BAR as if it were a typo for FOO::BAR inside a class, in
|
|
// this context it is a bitfield. Also in range-based for statement colon
|
|
// may delimit for-range-declaration.
|
|
ColonProtectionRAIIObject X(
|
|
*this, D.getContext() == DeclaratorContext::MemberContext ||
|
|
(D.getContext() == DeclaratorContext::ForContext &&
|
|
getLangOpts().CPlusPlus11));
|
|
|
|
// ParseDeclaratorInternal might already have parsed the scope.
|
|
if (D.getCXXScopeSpec().isEmpty()) {
|
|
bool EnteringContext =
|
|
D.getContext() == DeclaratorContext::FileContext ||
|
|
D.getContext() == DeclaratorContext::MemberContext;
|
|
ParseOptionalCXXScopeSpecifier(D.getCXXScopeSpec(), nullptr,
|
|
EnteringContext);
|
|
}
|
|
|
|
if (D.getCXXScopeSpec().isValid()) {
|
|
if (Actions.ShouldEnterDeclaratorScope(getCurScope(),
|
|
D.getCXXScopeSpec()))
|
|
// Change the declaration context for name lookup, until this function
|
|
// is exited (and the declarator has been parsed).
|
|
DeclScopeObj.EnterDeclaratorScope();
|
|
else if (getObjCDeclContext()) {
|
|
// Ensure that we don't interpret the next token as an identifier when
|
|
// dealing with declarations in an Objective-C container.
|
|
D.SetIdentifier(nullptr, Tok.getLocation());
|
|
D.setInvalidType(true);
|
|
ConsumeToken();
|
|
goto PastIdentifier;
|
|
}
|
|
}
|
|
|
|
// C++0x [dcl.fct]p14:
|
|
// There is a syntactic ambiguity when an ellipsis occurs at the end of a
|
|
// parameter-declaration-clause without a preceding comma. In this case,
|
|
// the ellipsis is parsed as part of the abstract-declarator if the type
|
|
// of the parameter either names a template parameter pack that has not
|
|
// been expanded or contains auto; otherwise, it is parsed as part of the
|
|
// parameter-declaration-clause.
|
|
if (Tok.is(tok::ellipsis) && D.getCXXScopeSpec().isEmpty() &&
|
|
!((D.getContext() == DeclaratorContext::PrototypeContext ||
|
|
D.getContext() == DeclaratorContext::LambdaExprParameterContext ||
|
|
D.getContext() == DeclaratorContext::BlockLiteralContext) &&
|
|
NextToken().is(tok::r_paren) &&
|
|
!D.hasGroupingParens() &&
|
|
!Actions.containsUnexpandedParameterPacks(D) &&
|
|
D.getDeclSpec().getTypeSpecType() != TST_auto)) {
|
|
SourceLocation EllipsisLoc = ConsumeToken();
|
|
if (isPtrOperatorToken(Tok.getKind(), getLangOpts(), D.getContext())) {
|
|
// The ellipsis was put in the wrong place. Recover, and explain to
|
|
// the user what they should have done.
|
|
ParseDeclarator(D);
|
|
if (EllipsisLoc.isValid())
|
|
DiagnoseMisplacedEllipsisInDeclarator(EllipsisLoc, D);
|
|
return;
|
|
} else
|
|
D.setEllipsisLoc(EllipsisLoc);
|
|
|
|
// The ellipsis can't be followed by a parenthesized declarator. We
|
|
// check for that in ParseParenDeclarator, after we have disambiguated
|
|
// the l_paren token.
|
|
}
|
|
|
|
if (Tok.isOneOf(tok::identifier, tok::kw_operator, tok::annot_template_id,
|
|
tok::tilde)) {
|
|
// We found something that indicates the start of an unqualified-id.
|
|
// Parse that unqualified-id.
|
|
bool AllowConstructorName;
|
|
bool AllowDeductionGuide;
|
|
if (D.getDeclSpec().hasTypeSpecifier()) {
|
|
AllowConstructorName = false;
|
|
AllowDeductionGuide = false;
|
|
} else if (D.getCXXScopeSpec().isSet()) {
|
|
AllowConstructorName =
|
|
(D.getContext() == DeclaratorContext::FileContext ||
|
|
D.getContext() == DeclaratorContext::MemberContext);
|
|
AllowDeductionGuide = false;
|
|
} else {
|
|
AllowConstructorName =
|
|
(D.getContext() == DeclaratorContext::MemberContext);
|
|
AllowDeductionGuide =
|
|
(D.getContext() == DeclaratorContext::FileContext ||
|
|
D.getContext() == DeclaratorContext::MemberContext);
|
|
}
|
|
|
|
bool HadScope = D.getCXXScopeSpec().isValid();
|
|
if (ParseUnqualifiedId(D.getCXXScopeSpec(),
|
|
/*EnteringContext=*/true,
|
|
/*AllowDestructorName=*/true, AllowConstructorName,
|
|
AllowDeductionGuide, nullptr, nullptr,
|
|
D.getName()) ||
|
|
// Once we're past the identifier, if the scope was bad, mark the
|
|
// whole declarator bad.
|
|
D.getCXXScopeSpec().isInvalid()) {
|
|
D.SetIdentifier(nullptr, Tok.getLocation());
|
|
D.setInvalidType(true);
|
|
} else {
|
|
// ParseUnqualifiedId might have parsed a scope specifier during error
|
|
// recovery. If it did so, enter that scope.
|
|
if (!HadScope && D.getCXXScopeSpec().isValid() &&
|
|
Actions.ShouldEnterDeclaratorScope(getCurScope(),
|
|
D.getCXXScopeSpec()))
|
|
DeclScopeObj.EnterDeclaratorScope();
|
|
|
|
// Parsed the unqualified-id; update range information and move along.
|
|
if (D.getSourceRange().getBegin().isInvalid())
|
|
D.SetRangeBegin(D.getName().getSourceRange().getBegin());
|
|
D.SetRangeEnd(D.getName().getSourceRange().getEnd());
|
|
}
|
|
goto PastIdentifier;
|
|
}
|
|
|
|
if (D.getCXXScopeSpec().isNotEmpty()) {
|
|
// We have a scope specifier but no following unqualified-id.
|
|
Diag(PP.getLocForEndOfToken(D.getCXXScopeSpec().getEndLoc()),
|
|
diag::err_expected_unqualified_id)
|
|
<< /*C++*/1;
|
|
D.SetIdentifier(nullptr, Tok.getLocation());
|
|
goto PastIdentifier;
|
|
}
|
|
} else if (Tok.is(tok::identifier) && D.mayHaveIdentifier()) {
|
|
assert(!getLangOpts().CPlusPlus &&
|
|
"There's a C++-specific check for tok::identifier above");
|
|
assert(Tok.getIdentifierInfo() && "Not an identifier?");
|
|
D.SetIdentifier(Tok.getIdentifierInfo(), Tok.getLocation());
|
|
D.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken();
|
|
goto PastIdentifier;
|
|
} else if (Tok.is(tok::identifier) && !D.mayHaveIdentifier()) {
|
|
// We're not allowed an identifier here, but we got one. Try to figure out
|
|
// if the user was trying to attach a name to the type, or whether the name
|
|
// is some unrelated trailing syntax.
|
|
bool DiagnoseIdentifier = false;
|
|
if (D.hasGroupingParens())
|
|
// An identifier within parens is unlikely to be intended to be anything
|
|
// other than a name being "declared".
|
|
DiagnoseIdentifier = true;
|
|
else if (D.getContext() == DeclaratorContext::TemplateArgContext)
|
|
// T<int N> is an accidental identifier; T<int N indicates a missing '>'.
|
|
DiagnoseIdentifier =
|
|
NextToken().isOneOf(tok::comma, tok::greater, tok::greatergreater);
|
|
else if (D.getContext() == DeclaratorContext::AliasDeclContext ||
|
|
D.getContext() == DeclaratorContext::AliasTemplateContext)
|
|
// The most likely error is that the ';' was forgotten.
|
|
DiagnoseIdentifier = NextToken().isOneOf(tok::comma, tok::semi);
|
|
else if ((D.getContext() == DeclaratorContext::TrailingReturnContext ||
|
|
D.getContext() == DeclaratorContext::TrailingReturnVarContext) &&
|
|
!isCXX11VirtSpecifier(Tok))
|
|
DiagnoseIdentifier = NextToken().isOneOf(
|
|
tok::comma, tok::semi, tok::equal, tok::l_brace, tok::kw_try);
|
|
if (DiagnoseIdentifier) {
|
|
Diag(Tok.getLocation(), diag::err_unexpected_unqualified_id)
|
|
<< FixItHint::CreateRemoval(Tok.getLocation());
|
|
D.SetIdentifier(nullptr, Tok.getLocation());
|
|
ConsumeToken();
|
|
goto PastIdentifier;
|
|
}
|
|
}
|
|
|
|
if (Tok.is(tok::l_paren)) {
|
|
// If this might be an abstract-declarator followed by a direct-initializer,
|
|
// check whether this is a valid declarator chunk. If it can't be, assume
|
|
// that it's an initializer instead.
|
|
if (D.mayOmitIdentifier() && D.mayBeFollowedByCXXDirectInit()) {
|
|
RevertingTentativeParsingAction PA(*this);
|
|
if (TryParseDeclarator(true, D.mayHaveIdentifier(), true) ==
|
|
TPResult::False) {
|
|
D.SetIdentifier(nullptr, Tok.getLocation());
|
|
goto PastIdentifier;
|
|
}
|
|
}
|
|
|
|
// direct-declarator: '(' declarator ')'
|
|
// direct-declarator: '(' attributes declarator ')'
|
|
// Example: 'char (*X)' or 'int (*XX)(void)'
|
|
ParseParenDeclarator(D);
|
|
|
|
// If the declarator was parenthesized, we entered the declarator
|
|
// scope when parsing the parenthesized declarator, then exited
|
|
// the scope already. Re-enter the scope, if we need to.
|
|
if (D.getCXXScopeSpec().isSet()) {
|
|
// If there was an error parsing parenthesized declarator, declarator
|
|
// scope may have been entered before. Don't do it again.
|
|
if (!D.isInvalidType() &&
|
|
Actions.ShouldEnterDeclaratorScope(getCurScope(),
|
|
D.getCXXScopeSpec()))
|
|
// Change the declaration context for name lookup, until this function
|
|
// is exited (and the declarator has been parsed).
|
|
DeclScopeObj.EnterDeclaratorScope();
|
|
}
|
|
} else if (D.mayOmitIdentifier()) {
|
|
// This could be something simple like "int" (in which case the declarator
|
|
// portion is empty), if an abstract-declarator is allowed.
|
|
D.SetIdentifier(nullptr, Tok.getLocation());
|
|
|
|
// The grammar for abstract-pack-declarator does not allow grouping parens.
|
|
// FIXME: Revisit this once core issue 1488 is resolved.
|
|
if (D.hasEllipsis() && D.hasGroupingParens())
|
|
Diag(PP.getLocForEndOfToken(D.getEllipsisLoc()),
|
|
diag::ext_abstract_pack_declarator_parens);
|
|
} else {
|
|
if (Tok.getKind() == tok::annot_pragma_parser_crash)
|
|
LLVM_BUILTIN_TRAP;
|
|
if (Tok.is(tok::l_square))
|
|
return ParseMisplacedBracketDeclarator(D);
|
|
if (D.getContext() == DeclaratorContext::MemberContext) {
|
|
// Objective-C++: Detect C++ keywords and try to prevent further errors by
|
|
// treating these keyword as valid member names.
|
|
if (getLangOpts().ObjC && getLangOpts().CPlusPlus &&
|
|
Tok.getIdentifierInfo() &&
|
|
Tok.getIdentifierInfo()->isCPlusPlusKeyword(getLangOpts())) {
|
|
Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
|
|
diag::err_expected_member_name_or_semi_objcxx_keyword)
|
|
<< Tok.getIdentifierInfo()
|
|
<< (D.getDeclSpec().isEmpty() ? SourceRange()
|
|
: D.getDeclSpec().getSourceRange());
|
|
D.SetIdentifier(Tok.getIdentifierInfo(), Tok.getLocation());
|
|
D.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken();
|
|
goto PastIdentifier;
|
|
}
|
|
Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
|
|
diag::err_expected_member_name_or_semi)
|
|
<< (D.getDeclSpec().isEmpty() ? SourceRange()
|
|
: D.getDeclSpec().getSourceRange());
|
|
} else if (getLangOpts().CPlusPlus) {
|
|
if (Tok.isOneOf(tok::period, tok::arrow))
|
|
Diag(Tok, diag::err_invalid_operator_on_type) << Tok.is(tok::arrow);
|
|
else {
|
|
SourceLocation Loc = D.getCXXScopeSpec().getEndLoc();
|
|
if (Tok.isAtStartOfLine() && Loc.isValid())
|
|
Diag(PP.getLocForEndOfToken(Loc), diag::err_expected_unqualified_id)
|
|
<< getLangOpts().CPlusPlus;
|
|
else
|
|
Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
|
|
diag::err_expected_unqualified_id)
|
|
<< getLangOpts().CPlusPlus;
|
|
}
|
|
} else {
|
|
Diag(getMissingDeclaratorIdLoc(D, Tok.getLocation()),
|
|
diag::err_expected_either)
|
|
<< tok::identifier << tok::l_paren;
|
|
}
|
|
D.SetIdentifier(nullptr, Tok.getLocation());
|
|
D.setInvalidType(true);
|
|
}
|
|
|
|
PastIdentifier:
|
|
assert(D.isPastIdentifier() &&
|
|
"Haven't past the location of the identifier yet?");
|
|
|
|
// Don't parse attributes unless we have parsed an unparenthesized name.
|
|
if (D.hasName() && !D.getNumTypeObjects())
|
|
MaybeParseCXX11Attributes(D);
|
|
|
|
while (1) {
|
|
if (Tok.is(tok::l_paren)) {
|
|
// Enter function-declaration scope, limiting any declarators to the
|
|
// function prototype scope, including parameter declarators.
|
|
ParseScope PrototypeScope(this,
|
|
Scope::FunctionPrototypeScope|Scope::DeclScope|
|
|
(D.isFunctionDeclaratorAFunctionDeclaration()
|
|
? Scope::FunctionDeclarationScope : 0));
|
|
|
|
// The paren may be part of a C++ direct initializer, eg. "int x(1);".
|
|
// In such a case, check if we actually have a function declarator; if it
|
|
// is not, the declarator has been fully parsed.
|
|
bool IsAmbiguous = false;
|
|
if (getLangOpts().CPlusPlus && D.mayBeFollowedByCXXDirectInit()) {
|
|
// The name of the declarator, if any, is tentatively declared within
|
|
// a possible direct initializer.
|
|
TentativelyDeclaredIdentifiers.push_back(D.getIdentifier());
|
|
bool IsFunctionDecl = isCXXFunctionDeclarator(&IsAmbiguous);
|
|
TentativelyDeclaredIdentifiers.pop_back();
|
|
if (!IsFunctionDecl)
|
|
break;
|
|
}
|
|
ParsedAttributes attrs(AttrFactory);
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
T.consumeOpen();
|
|
ParseFunctionDeclarator(D, attrs, T, IsAmbiguous);
|
|
PrototypeScope.Exit();
|
|
} else if (Tok.is(tok::l_square)) {
|
|
ParseBracketDeclarator(D);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Parser::ParseDecompositionDeclarator(Declarator &D) {
|
|
assert(Tok.is(tok::l_square));
|
|
|
|
// If this doesn't look like a structured binding, maybe it's a misplaced
|
|
// array declarator.
|
|
// FIXME: Consume the l_square first so we don't need extra lookahead for
|
|
// this.
|
|
if (!(NextToken().is(tok::identifier) &&
|
|
GetLookAheadToken(2).isOneOf(tok::comma, tok::r_square)) &&
|
|
!(NextToken().is(tok::r_square) &&
|
|
GetLookAheadToken(2).isOneOf(tok::equal, tok::l_brace)))
|
|
return ParseMisplacedBracketDeclarator(D);
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_square);
|
|
T.consumeOpen();
|
|
|
|
SmallVector<DecompositionDeclarator::Binding, 32> Bindings;
|
|
while (Tok.isNot(tok::r_square)) {
|
|
if (!Bindings.empty()) {
|
|
if (Tok.is(tok::comma))
|
|
ConsumeToken();
|
|
else {
|
|
if (Tok.is(tok::identifier)) {
|
|
SourceLocation EndLoc = getEndOfPreviousToken();
|
|
Diag(EndLoc, diag::err_expected)
|
|
<< tok::comma << FixItHint::CreateInsertion(EndLoc, ",");
|
|
} else {
|
|
Diag(Tok, diag::err_expected_comma_or_rsquare);
|
|
}
|
|
|
|
SkipUntil(tok::r_square, tok::comma, tok::identifier,
|
|
StopAtSemi | StopBeforeMatch);
|
|
if (Tok.is(tok::comma))
|
|
ConsumeToken();
|
|
else if (Tok.isNot(tok::identifier))
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected) << tok::identifier;
|
|
break;
|
|
}
|
|
|
|
Bindings.push_back({Tok.getIdentifierInfo(), Tok.getLocation()});
|
|
ConsumeToken();
|
|
}
|
|
|
|
if (Tok.isNot(tok::r_square))
|
|
// We've already diagnosed a problem here.
|
|
T.skipToEnd();
|
|
else {
|
|
// C++17 does not allow the identifier-list in a structured binding
|
|
// to be empty.
|
|
if (Bindings.empty())
|
|
Diag(Tok.getLocation(), diag::ext_decomp_decl_empty);
|
|
|
|
T.consumeClose();
|
|
}
|
|
|
|
return D.setDecompositionBindings(T.getOpenLocation(), Bindings,
|
|
T.getCloseLocation());
|
|
}
|
|
|
|
/// ParseParenDeclarator - We parsed the declarator D up to a paren. This is
|
|
/// only called before the identifier, so these are most likely just grouping
|
|
/// parens for precedence. If we find that these are actually function
|
|
/// parameter parens in an abstract-declarator, we call ParseFunctionDeclarator.
|
|
///
|
|
/// direct-declarator:
|
|
/// '(' declarator ')'
|
|
/// [GNU] '(' attributes declarator ')'
|
|
/// direct-declarator '(' parameter-type-list ')'
|
|
/// direct-declarator '(' identifier-list[opt] ')'
|
|
/// [GNU] direct-declarator '(' parameter-forward-declarations
|
|
/// parameter-type-list[opt] ')'
|
|
///
|
|
void Parser::ParseParenDeclarator(Declarator &D) {
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
T.consumeOpen();
|
|
|
|
assert(!D.isPastIdentifier() && "Should be called before passing identifier");
|
|
|
|
// Eat any attributes before we look at whether this is a grouping or function
|
|
// declarator paren. If this is a grouping paren, the attribute applies to
|
|
// the type being built up, for example:
|
|
// int (__attribute__(()) *x)(long y)
|
|
// If this ends up not being a grouping paren, the attribute applies to the
|
|
// first argument, for example:
|
|
// int (__attribute__(()) int x)
|
|
// In either case, we need to eat any attributes to be able to determine what
|
|
// sort of paren this is.
|
|
//
|
|
ParsedAttributes attrs(AttrFactory);
|
|
bool RequiresArg = false;
|
|
if (Tok.is(tok::kw___attribute)) {
|
|
ParseGNUAttributes(attrs);
|
|
|
|
// We require that the argument list (if this is a non-grouping paren) be
|
|
// present even if the attribute list was empty.
|
|
RequiresArg = true;
|
|
}
|
|
|
|
// Eat any Microsoft extensions.
|
|
ParseMicrosoftTypeAttributes(attrs);
|
|
|
|
// Eat any Borland extensions.
|
|
if (Tok.is(tok::kw___pascal))
|
|
ParseBorlandTypeAttributes(attrs);
|
|
|
|
// If we haven't past the identifier yet (or where the identifier would be
|
|
// stored, if this is an abstract declarator), then this is probably just
|
|
// grouping parens. However, if this could be an abstract-declarator, then
|
|
// this could also be the start of function arguments (consider 'void()').
|
|
bool isGrouping;
|
|
|
|
if (!D.mayOmitIdentifier()) {
|
|
// If this can't be an abstract-declarator, this *must* be a grouping
|
|
// paren, because we haven't seen the identifier yet.
|
|
isGrouping = true;
|
|
} else if (Tok.is(tok::r_paren) || // 'int()' is a function.
|
|
(getLangOpts().CPlusPlus && Tok.is(tok::ellipsis) &&
|
|
NextToken().is(tok::r_paren)) || // C++ int(...)
|
|
isDeclarationSpecifier() || // 'int(int)' is a function.
|
|
isCXX11AttributeSpecifier()) { // 'int([[]]int)' is a function.
|
|
// This handles C99 6.7.5.3p11: in "typedef int X; void foo(X)", X is
|
|
// considered to be a type, not a K&R identifier-list.
|
|
isGrouping = false;
|
|
} else {
|
|
// Otherwise, this is a grouping paren, e.g. 'int (*X)' or 'int(X)'.
|
|
isGrouping = true;
|
|
}
|
|
|
|
// If this is a grouping paren, handle:
|
|
// direct-declarator: '(' declarator ')'
|
|
// direct-declarator: '(' attributes declarator ')'
|
|
if (isGrouping) {
|
|
SourceLocation EllipsisLoc = D.getEllipsisLoc();
|
|
D.setEllipsisLoc(SourceLocation());
|
|
|
|
bool hadGroupingParens = D.hasGroupingParens();
|
|
D.setGroupingParens(true);
|
|
ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
|
|
// Match the ')'.
|
|
T.consumeClose();
|
|
D.AddTypeInfo(
|
|
DeclaratorChunk::getParen(T.getOpenLocation(), T.getCloseLocation()),
|
|
std::move(attrs), T.getCloseLocation());
|
|
|
|
D.setGroupingParens(hadGroupingParens);
|
|
|
|
// An ellipsis cannot be placed outside parentheses.
|
|
if (EllipsisLoc.isValid())
|
|
DiagnoseMisplacedEllipsisInDeclarator(EllipsisLoc, D);
|
|
|
|
return;
|
|
}
|
|
|
|
// Okay, if this wasn't a grouping paren, it must be the start of a function
|
|
// argument list. Recognize that this declarator will never have an
|
|
// identifier (and remember where it would have been), then call into
|
|
// ParseFunctionDeclarator to handle of argument list.
|
|
D.SetIdentifier(nullptr, Tok.getLocation());
|
|
|
|
// Enter function-declaration scope, limiting any declarators to the
|
|
// function prototype scope, including parameter declarators.
|
|
ParseScope PrototypeScope(this,
|
|
Scope::FunctionPrototypeScope | Scope::DeclScope |
|
|
(D.isFunctionDeclaratorAFunctionDeclaration()
|
|
? Scope::FunctionDeclarationScope : 0));
|
|
ParseFunctionDeclarator(D, attrs, T, false, RequiresArg);
|
|
PrototypeScope.Exit();
|
|
}
|
|
|
|
/// ParseFunctionDeclarator - We are after the identifier and have parsed the
|
|
/// declarator D up to a paren, which indicates that we are parsing function
|
|
/// arguments.
|
|
///
|
|
/// If FirstArgAttrs is non-null, then the caller parsed those arguments
|
|
/// immediately after the open paren - they should be considered to be the
|
|
/// first argument of a parameter.
|
|
///
|
|
/// If RequiresArg is true, then the first argument of the function is required
|
|
/// to be present and required to not be an identifier list.
|
|
///
|
|
/// For C++, after the parameter-list, it also parses the cv-qualifier-seq[opt],
|
|
/// (C++11) ref-qualifier[opt], exception-specification[opt],
|
|
/// (C++11) attribute-specifier-seq[opt], and (C++11) trailing-return-type[opt].
|
|
///
|
|
/// [C++11] exception-specification:
|
|
/// dynamic-exception-specification
|
|
/// noexcept-specification
|
|
///
|
|
void Parser::ParseFunctionDeclarator(Declarator &D,
|
|
ParsedAttributes &FirstArgAttrs,
|
|
BalancedDelimiterTracker &Tracker,
|
|
bool IsAmbiguous,
|
|
bool RequiresArg) {
|
|
assert(getCurScope()->isFunctionPrototypeScope() &&
|
|
"Should call from a Function scope");
|
|
// lparen is already consumed!
|
|
assert(D.isPastIdentifier() && "Should not call before identifier!");
|
|
|
|
// This should be true when the function has typed arguments.
|
|
// Otherwise, it is treated as a K&R-style function.
|
|
bool HasProto = false;
|
|
// Build up an array of information about the parsed arguments.
|
|
SmallVector<DeclaratorChunk::ParamInfo, 16> ParamInfo;
|
|
// Remember where we see an ellipsis, if any.
|
|
SourceLocation EllipsisLoc;
|
|
|
|
DeclSpec DS(AttrFactory);
|
|
bool RefQualifierIsLValueRef = true;
|
|
SourceLocation RefQualifierLoc;
|
|
ExceptionSpecificationType ESpecType = EST_None;
|
|
SourceRange ESpecRange;
|
|
SmallVector<ParsedType, 2> DynamicExceptions;
|
|
SmallVector<SourceRange, 2> DynamicExceptionRanges;
|
|
ExprResult NoexceptExpr;
|
|
CachedTokens *ExceptionSpecTokens = nullptr;
|
|
ParsedAttributesWithRange FnAttrs(AttrFactory);
|
|
TypeResult TrailingReturnType;
|
|
|
|
/* LocalEndLoc is the end location for the local FunctionTypeLoc.
|
|
EndLoc is the end location for the function declarator.
|
|
They differ for trailing return types. */
|
|
SourceLocation StartLoc, LocalEndLoc, EndLoc;
|
|
SourceLocation LParenLoc, RParenLoc;
|
|
LParenLoc = Tracker.getOpenLocation();
|
|
StartLoc = LParenLoc;
|
|
|
|
if (isFunctionDeclaratorIdentifierList()) {
|
|
if (RequiresArg)
|
|
Diag(Tok, diag::err_argument_required_after_attribute);
|
|
|
|
ParseFunctionDeclaratorIdentifierList(D, ParamInfo);
|
|
|
|
Tracker.consumeClose();
|
|
RParenLoc = Tracker.getCloseLocation();
|
|
LocalEndLoc = RParenLoc;
|
|
EndLoc = RParenLoc;
|
|
|
|
// If there are attributes following the identifier list, parse them and
|
|
// prohibit them.
|
|
MaybeParseCXX11Attributes(FnAttrs);
|
|
ProhibitAttributes(FnAttrs);
|
|
} else {
|
|
if (Tok.isNot(tok::r_paren))
|
|
ParseParameterDeclarationClause(D, FirstArgAttrs, ParamInfo,
|
|
EllipsisLoc);
|
|
else if (RequiresArg)
|
|
Diag(Tok, diag::err_argument_required_after_attribute);
|
|
|
|
HasProto = ParamInfo.size() || getLangOpts().CPlusPlus
|
|
|| getLangOpts().OpenCL;
|
|
|
|
// If we have the closing ')', eat it.
|
|
Tracker.consumeClose();
|
|
RParenLoc = Tracker.getCloseLocation();
|
|
LocalEndLoc = RParenLoc;
|
|
EndLoc = RParenLoc;
|
|
|
|
if (getLangOpts().CPlusPlus) {
|
|
// FIXME: Accept these components in any order, and produce fixits to
|
|
// correct the order if the user gets it wrong. Ideally we should deal
|
|
// with the pure-specifier in the same way.
|
|
|
|
// Parse cv-qualifier-seq[opt].
|
|
ParseTypeQualifierListOpt(DS, AR_NoAttributesParsed,
|
|
/*AtomicAllowed*/ false,
|
|
/*IdentifierRequired=*/false,
|
|
llvm::function_ref<void()>([&]() {
|
|
Actions.CodeCompleteFunctionQualifiers(DS, D);
|
|
}));
|
|
if (!DS.getSourceRange().getEnd().isInvalid()) {
|
|
EndLoc = DS.getSourceRange().getEnd();
|
|
}
|
|
|
|
// Parse ref-qualifier[opt].
|
|
if (ParseRefQualifier(RefQualifierIsLValueRef, RefQualifierLoc))
|
|
EndLoc = RefQualifierLoc;
|
|
|
|
// C++11 [expr.prim.general]p3:
|
|
// If a declaration declares a member function or member function
|
|
// template of a class X, the expression this is a prvalue of type
|
|
// "pointer to cv-qualifier-seq X" between the optional cv-qualifer-seq
|
|
// and the end of the function-definition, member-declarator, or
|
|
// declarator.
|
|
// FIXME: currently, "static" case isn't handled correctly.
|
|
bool IsCXX11MemberFunction =
|
|
getLangOpts().CPlusPlus11 &&
|
|
D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_typedef &&
|
|
(D.getContext() == DeclaratorContext::MemberContext
|
|
? !D.getDeclSpec().isFriendSpecified()
|
|
: D.getContext() == DeclaratorContext::FileContext &&
|
|
D.getCXXScopeSpec().isValid() &&
|
|
Actions.CurContext->isRecord());
|
|
|
|
Qualifiers Q = Qualifiers::fromCVRUMask(DS.getTypeQualifiers());
|
|
if (D.getDeclSpec().isConstexprSpecified() && !getLangOpts().CPlusPlus14)
|
|
Q.addConst();
|
|
|
|
Sema::CXXThisScopeRAII ThisScope(
|
|
Actions, dyn_cast<CXXRecordDecl>(Actions.CurContext), Q,
|
|
IsCXX11MemberFunction);
|
|
|
|
// Parse exception-specification[opt].
|
|
bool Delayed = D.isFirstDeclarationOfMember() &&
|
|
D.isFunctionDeclaratorAFunctionDeclaration();
|
|
if (Delayed && Actions.isLibstdcxxEagerExceptionSpecHack(D) &&
|
|
GetLookAheadToken(0).is(tok::kw_noexcept) &&
|
|
GetLookAheadToken(1).is(tok::l_paren) &&
|
|
GetLookAheadToken(2).is(tok::kw_noexcept) &&
|
|
GetLookAheadToken(3).is(tok::l_paren) &&
|
|
GetLookAheadToken(4).is(tok::identifier) &&
|
|
GetLookAheadToken(4).getIdentifierInfo()->isStr("swap")) {
|
|
// HACK: We've got an exception-specification
|
|
// noexcept(noexcept(swap(...)))
|
|
// or
|
|
// noexcept(noexcept(swap(...)) && noexcept(swap(...)))
|
|
// on a 'swap' member function. This is a libstdc++ bug; the lookup
|
|
// for 'swap' will only find the function we're currently declaring,
|
|
// whereas it expects to find a non-member swap through ADL. Turn off
|
|
// delayed parsing to give it a chance to find what it expects.
|
|
Delayed = false;
|
|
}
|
|
ESpecType = tryParseExceptionSpecification(Delayed,
|
|
ESpecRange,
|
|
DynamicExceptions,
|
|
DynamicExceptionRanges,
|
|
NoexceptExpr,
|
|
ExceptionSpecTokens);
|
|
if (ESpecType != EST_None)
|
|
EndLoc = ESpecRange.getEnd();
|
|
|
|
// Parse attribute-specifier-seq[opt]. Per DR 979 and DR 1297, this goes
|
|
// after the exception-specification.
|
|
MaybeParseCXX11Attributes(FnAttrs);
|
|
|
|
// Parse trailing-return-type[opt].
|
|
LocalEndLoc = EndLoc;
|
|
if (getLangOpts().CPlusPlus11 && Tok.is(tok::arrow)) {
|
|
Diag(Tok, diag::warn_cxx98_compat_trailing_return_type);
|
|
if (D.getDeclSpec().getTypeSpecType() == TST_auto)
|
|
StartLoc = D.getDeclSpec().getTypeSpecTypeLoc();
|
|
LocalEndLoc = Tok.getLocation();
|
|
SourceRange Range;
|
|
TrailingReturnType =
|
|
ParseTrailingReturnType(Range, D.mayBeFollowedByCXXDirectInit());
|
|
EndLoc = Range.getEnd();
|
|
}
|
|
} else if (standardAttributesAllowed()) {
|
|
MaybeParseCXX11Attributes(FnAttrs);
|
|
}
|
|
}
|
|
|
|
// Collect non-parameter declarations from the prototype if this is a function
|
|
// declaration. They will be moved into the scope of the function. Only do
|
|
// this in C and not C++, where the decls will continue to live in the
|
|
// surrounding context.
|
|
SmallVector<NamedDecl *, 0> DeclsInPrototype;
|
|
if (getCurScope()->getFlags() & Scope::FunctionDeclarationScope &&
|
|
!getLangOpts().CPlusPlus) {
|
|
for (Decl *D : getCurScope()->decls()) {
|
|
NamedDecl *ND = dyn_cast<NamedDecl>(D);
|
|
if (!ND || isa<ParmVarDecl>(ND))
|
|
continue;
|
|
DeclsInPrototype.push_back(ND);
|
|
}
|
|
}
|
|
|
|
// Remember that we parsed a function type, and remember the attributes.
|
|
D.AddTypeInfo(DeclaratorChunk::getFunction(
|
|
HasProto, IsAmbiguous, LParenLoc, ParamInfo.data(),
|
|
ParamInfo.size(), EllipsisLoc, RParenLoc,
|
|
RefQualifierIsLValueRef, RefQualifierLoc,
|
|
/*MutableLoc=*/SourceLocation(),
|
|
ESpecType, ESpecRange, DynamicExceptions.data(),
|
|
DynamicExceptionRanges.data(), DynamicExceptions.size(),
|
|
NoexceptExpr.isUsable() ? NoexceptExpr.get() : nullptr,
|
|
ExceptionSpecTokens, DeclsInPrototype, StartLoc,
|
|
LocalEndLoc, D, TrailingReturnType, &DS),
|
|
std::move(FnAttrs), EndLoc);
|
|
}
|
|
|
|
/// ParseRefQualifier - Parses a member function ref-qualifier. Returns
|
|
/// true if a ref-qualifier is found.
|
|
bool Parser::ParseRefQualifier(bool &RefQualifierIsLValueRef,
|
|
SourceLocation &RefQualifierLoc) {
|
|
if (Tok.isOneOf(tok::amp, tok::ampamp)) {
|
|
Diag(Tok, getLangOpts().CPlusPlus11 ?
|
|
diag::warn_cxx98_compat_ref_qualifier :
|
|
diag::ext_ref_qualifier);
|
|
|
|
RefQualifierIsLValueRef = Tok.is(tok::amp);
|
|
RefQualifierLoc = ConsumeToken();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// isFunctionDeclaratorIdentifierList - This parameter list may have an
|
|
/// identifier list form for a K&R-style function: void foo(a,b,c)
|
|
///
|
|
/// Note that identifier-lists are only allowed for normal declarators, not for
|
|
/// abstract-declarators.
|
|
bool Parser::isFunctionDeclaratorIdentifierList() {
|
|
return !getLangOpts().CPlusPlus
|
|
&& Tok.is(tok::identifier)
|
|
&& !TryAltiVecVectorToken()
|
|
// K&R identifier lists can't have typedefs as identifiers, per C99
|
|
// 6.7.5.3p11.
|
|
&& (TryAnnotateTypeOrScopeToken() || !Tok.is(tok::annot_typename))
|
|
// Identifier lists follow a really simple grammar: the identifiers can
|
|
// be followed *only* by a ", identifier" or ")". However, K&R
|
|
// identifier lists are really rare in the brave new modern world, and
|
|
// it is very common for someone to typo a type in a non-K&R style
|
|
// list. If we are presented with something like: "void foo(intptr x,
|
|
// float y)", we don't want to start parsing the function declarator as
|
|
// though it is a K&R style declarator just because intptr is an
|
|
// invalid type.
|
|
//
|
|
// To handle this, we check to see if the token after the first
|
|
// identifier is a "," or ")". Only then do we parse it as an
|
|
// identifier list.
|
|
&& (!Tok.is(tok::eof) &&
|
|
(NextToken().is(tok::comma) || NextToken().is(tok::r_paren)));
|
|
}
|
|
|
|
/// ParseFunctionDeclaratorIdentifierList - While parsing a function declarator
|
|
/// we found a K&R-style identifier list instead of a typed parameter list.
|
|
///
|
|
/// After returning, ParamInfo will hold the parsed parameters.
|
|
///
|
|
/// identifier-list: [C99 6.7.5]
|
|
/// identifier
|
|
/// identifier-list ',' identifier
|
|
///
|
|
void Parser::ParseFunctionDeclaratorIdentifierList(
|
|
Declarator &D,
|
|
SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo) {
|
|
// If there was no identifier specified for the declarator, either we are in
|
|
// an abstract-declarator, or we are in a parameter declarator which was found
|
|
// to be abstract. In abstract-declarators, identifier lists are not valid:
|
|
// diagnose this.
|
|
if (!D.getIdentifier())
|
|
Diag(Tok, diag::ext_ident_list_in_param);
|
|
|
|
// Maintain an efficient lookup of params we have seen so far.
|
|
llvm::SmallSet<const IdentifierInfo*, 16> ParamsSoFar;
|
|
|
|
do {
|
|
// If this isn't an identifier, report the error and skip until ')'.
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected) << tok::identifier;
|
|
SkipUntil(tok::r_paren, StopAtSemi | StopBeforeMatch);
|
|
// Forget we parsed anything.
|
|
ParamInfo.clear();
|
|
return;
|
|
}
|
|
|
|
IdentifierInfo *ParmII = Tok.getIdentifierInfo();
|
|
|
|
// Reject 'typedef int y; int test(x, y)', but continue parsing.
|
|
if (Actions.getTypeName(*ParmII, Tok.getLocation(), getCurScope()))
|
|
Diag(Tok, diag::err_unexpected_typedef_ident) << ParmII;
|
|
|
|
// Verify that the argument identifier has not already been mentioned.
|
|
if (!ParamsSoFar.insert(ParmII).second) {
|
|
Diag(Tok, diag::err_param_redefinition) << ParmII;
|
|
} else {
|
|
// Remember this identifier in ParamInfo.
|
|
ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII,
|
|
Tok.getLocation(),
|
|
nullptr));
|
|
}
|
|
|
|
// Eat the identifier.
|
|
ConsumeToken();
|
|
// The list continues if we see a comma.
|
|
} while (TryConsumeToken(tok::comma));
|
|
}
|
|
|
|
/// ParseParameterDeclarationClause - Parse a (possibly empty) parameter-list
|
|
/// after the opening parenthesis. This function will not parse a K&R-style
|
|
/// identifier list.
|
|
///
|
|
/// D is the declarator being parsed. If FirstArgAttrs is non-null, then the
|
|
/// caller parsed those arguments immediately after the open paren - they should
|
|
/// be considered to be part of the first parameter.
|
|
///
|
|
/// After returning, ParamInfo will hold the parsed parameters. EllipsisLoc will
|
|
/// be the location of the ellipsis, if any was parsed.
|
|
///
|
|
/// parameter-type-list: [C99 6.7.5]
|
|
/// parameter-list
|
|
/// parameter-list ',' '...'
|
|
/// [C++] parameter-list '...'
|
|
///
|
|
/// parameter-list: [C99 6.7.5]
|
|
/// parameter-declaration
|
|
/// parameter-list ',' parameter-declaration
|
|
///
|
|
/// parameter-declaration: [C99 6.7.5]
|
|
/// declaration-specifiers declarator
|
|
/// [C++] declaration-specifiers declarator '=' assignment-expression
|
|
/// [C++11] initializer-clause
|
|
/// [GNU] declaration-specifiers declarator attributes
|
|
/// declaration-specifiers abstract-declarator[opt]
|
|
/// [C++] declaration-specifiers abstract-declarator[opt]
|
|
/// '=' assignment-expression
|
|
/// [GNU] declaration-specifiers abstract-declarator[opt] attributes
|
|
/// [C++11] attribute-specifier-seq parameter-declaration
|
|
///
|
|
void Parser::ParseParameterDeclarationClause(
|
|
Declarator &D,
|
|
ParsedAttributes &FirstArgAttrs,
|
|
SmallVectorImpl<DeclaratorChunk::ParamInfo> &ParamInfo,
|
|
SourceLocation &EllipsisLoc) {
|
|
do {
|
|
// FIXME: Issue a diagnostic if we parsed an attribute-specifier-seq
|
|
// before deciding this was a parameter-declaration-clause.
|
|
if (TryConsumeToken(tok::ellipsis, EllipsisLoc))
|
|
break;
|
|
|
|
// Parse the declaration-specifiers.
|
|
// Just use the ParsingDeclaration "scope" of the declarator.
|
|
DeclSpec DS(AttrFactory);
|
|
|
|
// Parse any C++11 attributes.
|
|
MaybeParseCXX11Attributes(DS.getAttributes());
|
|
|
|
// Skip any Microsoft attributes before a param.
|
|
MaybeParseMicrosoftAttributes(DS.getAttributes());
|
|
|
|
SourceLocation DSStart = Tok.getLocation();
|
|
|
|
// If the caller parsed attributes for the first argument, add them now.
|
|
// Take them so that we only apply the attributes to the first parameter.
|
|
// FIXME: If we can leave the attributes in the token stream somehow, we can
|
|
// get rid of a parameter (FirstArgAttrs) and this statement. It might be
|
|
// too much hassle.
|
|
DS.takeAttributesFrom(FirstArgAttrs);
|
|
|
|
ParseDeclarationSpecifiers(DS);
|
|
|
|
|
|
// Parse the declarator. This is "PrototypeContext" or
|
|
// "LambdaExprParameterContext", because we must accept either
|
|
// 'declarator' or 'abstract-declarator' here.
|
|
Declarator ParmDeclarator(
|
|
DS, D.getContext() == DeclaratorContext::LambdaExprContext
|
|
? DeclaratorContext::LambdaExprParameterContext
|
|
: DeclaratorContext::PrototypeContext);
|
|
ParseDeclarator(ParmDeclarator);
|
|
|
|
// Parse GNU attributes, if present.
|
|
MaybeParseGNUAttributes(ParmDeclarator);
|
|
|
|
// Remember this parsed parameter in ParamInfo.
|
|
IdentifierInfo *ParmII = ParmDeclarator.getIdentifier();
|
|
|
|
// DefArgToks is used when the parsing of default arguments needs
|
|
// to be delayed.
|
|
std::unique_ptr<CachedTokens> DefArgToks;
|
|
|
|
// If no parameter was specified, verify that *something* was specified,
|
|
// otherwise we have a missing type and identifier.
|
|
if (DS.isEmpty() && ParmDeclarator.getIdentifier() == nullptr &&
|
|
ParmDeclarator.getNumTypeObjects() == 0) {
|
|
// Completely missing, emit error.
|
|
Diag(DSStart, diag::err_missing_param);
|
|
} else {
|
|
// Otherwise, we have something. Add it and let semantic analysis try
|
|
// to grok it and add the result to the ParamInfo we are building.
|
|
|
|
// Last chance to recover from a misplaced ellipsis in an attempted
|
|
// parameter pack declaration.
|
|
if (Tok.is(tok::ellipsis) &&
|
|
(NextToken().isNot(tok::r_paren) ||
|
|
(!ParmDeclarator.getEllipsisLoc().isValid() &&
|
|
!Actions.isUnexpandedParameterPackPermitted())) &&
|
|
Actions.containsUnexpandedParameterPacks(ParmDeclarator))
|
|
DiagnoseMisplacedEllipsisInDeclarator(ConsumeToken(), ParmDeclarator);
|
|
|
|
// Inform the actions module about the parameter declarator, so it gets
|
|
// added to the current scope.
|
|
Decl *Param = Actions.ActOnParamDeclarator(getCurScope(), ParmDeclarator);
|
|
// Parse the default argument, if any. We parse the default
|
|
// arguments in all dialects; the semantic analysis in
|
|
// ActOnParamDefaultArgument will reject the default argument in
|
|
// C.
|
|
if (Tok.is(tok::equal)) {
|
|
SourceLocation EqualLoc = Tok.getLocation();
|
|
|
|
// Parse the default argument
|
|
if (D.getContext() == DeclaratorContext::MemberContext) {
|
|
// If we're inside a class definition, cache the tokens
|
|
// corresponding to the default argument. We'll actually parse
|
|
// them when we see the end of the class definition.
|
|
DefArgToks.reset(new CachedTokens);
|
|
|
|
SourceLocation ArgStartLoc = NextToken().getLocation();
|
|
if (!ConsumeAndStoreInitializer(*DefArgToks, CIK_DefaultArgument)) {
|
|
DefArgToks.reset();
|
|
Actions.ActOnParamDefaultArgumentError(Param, EqualLoc);
|
|
} else {
|
|
Actions.ActOnParamUnparsedDefaultArgument(Param, EqualLoc,
|
|
ArgStartLoc);
|
|
}
|
|
} else {
|
|
// Consume the '='.
|
|
ConsumeToken();
|
|
|
|
// The argument isn't actually potentially evaluated unless it is
|
|
// used.
|
|
EnterExpressionEvaluationContext Eval(
|
|
Actions,
|
|
Sema::ExpressionEvaluationContext::PotentiallyEvaluatedIfUsed,
|
|
Param);
|
|
|
|
ExprResult DefArgResult;
|
|
if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
|
|
Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
|
|
DefArgResult = ParseBraceInitializer();
|
|
} else
|
|
DefArgResult = ParseAssignmentExpression();
|
|
DefArgResult = Actions.CorrectDelayedTyposInExpr(DefArgResult);
|
|
if (DefArgResult.isInvalid()) {
|
|
Actions.ActOnParamDefaultArgumentError(Param, EqualLoc);
|
|
SkipUntil(tok::comma, tok::r_paren, StopAtSemi | StopBeforeMatch);
|
|
} else {
|
|
// Inform the actions module about the default argument
|
|
Actions.ActOnParamDefaultArgument(Param, EqualLoc,
|
|
DefArgResult.get());
|
|
}
|
|
}
|
|
}
|
|
|
|
ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII,
|
|
ParmDeclarator.getIdentifierLoc(),
|
|
Param, std::move(DefArgToks)));
|
|
}
|
|
|
|
if (TryConsumeToken(tok::ellipsis, EllipsisLoc)) {
|
|
if (!getLangOpts().CPlusPlus) {
|
|
// We have ellipsis without a preceding ',', which is ill-formed
|
|
// in C. Complain and provide the fix.
|
|
Diag(EllipsisLoc, diag::err_missing_comma_before_ellipsis)
|
|
<< FixItHint::CreateInsertion(EllipsisLoc, ", ");
|
|
} else if (ParmDeclarator.getEllipsisLoc().isValid() ||
|
|
Actions.containsUnexpandedParameterPacks(ParmDeclarator)) {
|
|
// It looks like this was supposed to be a parameter pack. Warn and
|
|
// point out where the ellipsis should have gone.
|
|
SourceLocation ParmEllipsis = ParmDeclarator.getEllipsisLoc();
|
|
Diag(EllipsisLoc, diag::warn_misplaced_ellipsis_vararg)
|
|
<< ParmEllipsis.isValid() << ParmEllipsis;
|
|
if (ParmEllipsis.isValid()) {
|
|
Diag(ParmEllipsis,
|
|
diag::note_misplaced_ellipsis_vararg_existing_ellipsis);
|
|
} else {
|
|
Diag(ParmDeclarator.getIdentifierLoc(),
|
|
diag::note_misplaced_ellipsis_vararg_add_ellipsis)
|
|
<< FixItHint::CreateInsertion(ParmDeclarator.getIdentifierLoc(),
|
|
"...")
|
|
<< !ParmDeclarator.hasName();
|
|
}
|
|
Diag(EllipsisLoc, diag::note_misplaced_ellipsis_vararg_add_comma)
|
|
<< FixItHint::CreateInsertion(EllipsisLoc, ", ");
|
|
}
|
|
|
|
// We can't have any more parameters after an ellipsis.
|
|
break;
|
|
}
|
|
|
|
// If the next token is a comma, consume it and keep reading arguments.
|
|
} while (TryConsumeToken(tok::comma));
|
|
}
|
|
|
|
/// [C90] direct-declarator '[' constant-expression[opt] ']'
|
|
/// [C99] direct-declarator '[' type-qual-list[opt] assignment-expr[opt] ']'
|
|
/// [C99] direct-declarator '[' 'static' type-qual-list[opt] assign-expr ']'
|
|
/// [C99] direct-declarator '[' type-qual-list 'static' assignment-expr ']'
|
|
/// [C99] direct-declarator '[' type-qual-list[opt] '*' ']'
|
|
/// [C++11] direct-declarator '[' constant-expression[opt] ']'
|
|
/// attribute-specifier-seq[opt]
|
|
void Parser::ParseBracketDeclarator(Declarator &D) {
|
|
if (CheckProhibitedCXX11Attribute())
|
|
return;
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_square);
|
|
T.consumeOpen();
|
|
|
|
// C array syntax has many features, but by-far the most common is [] and [4].
|
|
// This code does a fast path to handle some of the most obvious cases.
|
|
if (Tok.getKind() == tok::r_square) {
|
|
T.consumeClose();
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseCXX11Attributes(attrs);
|
|
|
|
// Remember that we parsed the empty array type.
|
|
D.AddTypeInfo(DeclaratorChunk::getArray(0, false, false, nullptr,
|
|
T.getOpenLocation(),
|
|
T.getCloseLocation()),
|
|
std::move(attrs), T.getCloseLocation());
|
|
return;
|
|
} else if (Tok.getKind() == tok::numeric_constant &&
|
|
GetLookAheadToken(1).is(tok::r_square)) {
|
|
// [4] is very common. Parse the numeric constant expression.
|
|
ExprResult ExprRes(Actions.ActOnNumericConstant(Tok, getCurScope()));
|
|
ConsumeToken();
|
|
|
|
T.consumeClose();
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseCXX11Attributes(attrs);
|
|
|
|
// Remember that we parsed a array type, and remember its features.
|
|
D.AddTypeInfo(DeclaratorChunk::getArray(0, false, false, ExprRes.get(),
|
|
T.getOpenLocation(),
|
|
T.getCloseLocation()),
|
|
std::move(attrs), T.getCloseLocation());
|
|
return;
|
|
} else if (Tok.getKind() == tok::code_completion) {
|
|
Actions.CodeCompleteBracketDeclarator(getCurScope());
|
|
return cutOffParsing();
|
|
}
|
|
|
|
// If valid, this location is the position where we read the 'static' keyword.
|
|
SourceLocation StaticLoc;
|
|
TryConsumeToken(tok::kw_static, StaticLoc);
|
|
|
|
// If there is a type-qualifier-list, read it now.
|
|
// Type qualifiers in an array subscript are a C99 feature.
|
|
DeclSpec DS(AttrFactory);
|
|
ParseTypeQualifierListOpt(DS, AR_CXX11AttributesParsed);
|
|
|
|
// If we haven't already read 'static', check to see if there is one after the
|
|
// type-qualifier-list.
|
|
if (!StaticLoc.isValid())
|
|
TryConsumeToken(tok::kw_static, StaticLoc);
|
|
|
|
// Handle "direct-declarator [ type-qual-list[opt] * ]".
|
|
bool isStar = false;
|
|
ExprResult NumElements;
|
|
|
|
// Handle the case where we have '[*]' as the array size. However, a leading
|
|
// star could be the start of an expression, for example 'X[*p + 4]'. Verify
|
|
// the token after the star is a ']'. Since stars in arrays are
|
|
// infrequent, use of lookahead is not costly here.
|
|
if (Tok.is(tok::star) && GetLookAheadToken(1).is(tok::r_square)) {
|
|
ConsumeToken(); // Eat the '*'.
|
|
|
|
if (StaticLoc.isValid()) {
|
|
Diag(StaticLoc, diag::err_unspecified_vla_size_with_static);
|
|
StaticLoc = SourceLocation(); // Drop the static.
|
|
}
|
|
isStar = true;
|
|
} else if (Tok.isNot(tok::r_square)) {
|
|
// Note, in C89, this production uses the constant-expr production instead
|
|
// of assignment-expr. The only difference is that assignment-expr allows
|
|
// things like '=' and '*='. Sema rejects these in C89 mode because they
|
|
// are not i-c-e's, so we don't need to distinguish between the two here.
|
|
|
|
// Parse the constant-expression or assignment-expression now (depending
|
|
// on dialect).
|
|
if (getLangOpts().CPlusPlus) {
|
|
NumElements = ParseConstantExpression();
|
|
} else {
|
|
EnterExpressionEvaluationContext Unevaluated(
|
|
Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
|
|
NumElements =
|
|
Actions.CorrectDelayedTyposInExpr(ParseAssignmentExpression());
|
|
}
|
|
} else {
|
|
if (StaticLoc.isValid()) {
|
|
Diag(StaticLoc, diag::err_unspecified_size_with_static);
|
|
StaticLoc = SourceLocation(); // Drop the static.
|
|
}
|
|
}
|
|
|
|
// If there was an error parsing the assignment-expression, recover.
|
|
if (NumElements.isInvalid()) {
|
|
D.setInvalidType(true);
|
|
// If the expression was invalid, skip it.
|
|
SkipUntil(tok::r_square, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
T.consumeClose();
|
|
|
|
MaybeParseCXX11Attributes(DS.getAttributes());
|
|
|
|
// Remember that we parsed a array type, and remember its features.
|
|
D.AddTypeInfo(
|
|
DeclaratorChunk::getArray(DS.getTypeQualifiers(), StaticLoc.isValid(),
|
|
isStar, NumElements.get(), T.getOpenLocation(),
|
|
T.getCloseLocation()),
|
|
std::move(DS.getAttributes()), T.getCloseLocation());
|
|
}
|
|
|
|
/// Diagnose brackets before an identifier.
|
|
void Parser::ParseMisplacedBracketDeclarator(Declarator &D) {
|
|
assert(Tok.is(tok::l_square) && "Missing opening bracket");
|
|
assert(!D.mayOmitIdentifier() && "Declarator cannot omit identifier");
|
|
|
|
SourceLocation StartBracketLoc = Tok.getLocation();
|
|
Declarator TempDeclarator(D.getDeclSpec(), D.getContext());
|
|
|
|
while (Tok.is(tok::l_square)) {
|
|
ParseBracketDeclarator(TempDeclarator);
|
|
}
|
|
|
|
// Stuff the location of the start of the brackets into the Declarator.
|
|
// The diagnostics from ParseDirectDeclarator will make more sense if
|
|
// they use this location instead.
|
|
if (Tok.is(tok::semi))
|
|
D.getName().EndLocation = StartBracketLoc;
|
|
|
|
SourceLocation SuggestParenLoc = Tok.getLocation();
|
|
|
|
// Now that the brackets are removed, try parsing the declarator again.
|
|
ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
|
|
|
|
// Something went wrong parsing the brackets, in which case,
|
|
// ParseBracketDeclarator has emitted an error, and we don't need to emit
|
|
// one here.
|
|
if (TempDeclarator.getNumTypeObjects() == 0)
|
|
return;
|
|
|
|
// Determine if parens will need to be suggested in the diagnostic.
|
|
bool NeedParens = false;
|
|
if (D.getNumTypeObjects() != 0) {
|
|
switch (D.getTypeObject(D.getNumTypeObjects() - 1).Kind) {
|
|
case DeclaratorChunk::Pointer:
|
|
case DeclaratorChunk::Reference:
|
|
case DeclaratorChunk::BlockPointer:
|
|
case DeclaratorChunk::MemberPointer:
|
|
case DeclaratorChunk::Pipe:
|
|
NeedParens = true;
|
|
break;
|
|
case DeclaratorChunk::Array:
|
|
case DeclaratorChunk::Function:
|
|
case DeclaratorChunk::Paren:
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (NeedParens) {
|
|
// Create a DeclaratorChunk for the inserted parens.
|
|
SourceLocation EndLoc = PP.getLocForEndOfToken(D.getEndLoc());
|
|
D.AddTypeInfo(DeclaratorChunk::getParen(SuggestParenLoc, EndLoc),
|
|
SourceLocation());
|
|
}
|
|
|
|
// Adding back the bracket info to the end of the Declarator.
|
|
for (unsigned i = 0, e = TempDeclarator.getNumTypeObjects(); i < e; ++i) {
|
|
const DeclaratorChunk &Chunk = TempDeclarator.getTypeObject(i);
|
|
D.AddTypeInfo(Chunk, SourceLocation());
|
|
}
|
|
|
|
// The missing identifier would have been diagnosed in ParseDirectDeclarator.
|
|
// If parentheses are required, always suggest them.
|
|
if (!D.getIdentifier() && !NeedParens)
|
|
return;
|
|
|
|
SourceLocation EndBracketLoc = TempDeclarator.getEndLoc();
|
|
|
|
// Generate the move bracket error message.
|
|
SourceRange BracketRange(StartBracketLoc, EndBracketLoc);
|
|
SourceLocation EndLoc = PP.getLocForEndOfToken(D.getEndLoc());
|
|
|
|
if (NeedParens) {
|
|
Diag(EndLoc, diag::err_brackets_go_after_unqualified_id)
|
|
<< getLangOpts().CPlusPlus
|
|
<< FixItHint::CreateInsertion(SuggestParenLoc, "(")
|
|
<< FixItHint::CreateInsertion(EndLoc, ")")
|
|
<< FixItHint::CreateInsertionFromRange(
|
|
EndLoc, CharSourceRange(BracketRange, true))
|
|
<< FixItHint::CreateRemoval(BracketRange);
|
|
} else {
|
|
Diag(EndLoc, diag::err_brackets_go_after_unqualified_id)
|
|
<< getLangOpts().CPlusPlus
|
|
<< FixItHint::CreateInsertionFromRange(
|
|
EndLoc, CharSourceRange(BracketRange, true))
|
|
<< FixItHint::CreateRemoval(BracketRange);
|
|
}
|
|
}
|
|
|
|
/// [GNU] typeof-specifier:
|
|
/// typeof ( expressions )
|
|
/// typeof ( type-name )
|
|
/// [GNU/C++] typeof unary-expression
|
|
///
|
|
void Parser::ParseTypeofSpecifier(DeclSpec &DS) {
|
|
assert(Tok.is(tok::kw_typeof) && "Not a typeof specifier");
|
|
Token OpTok = Tok;
|
|
SourceLocation StartLoc = ConsumeToken();
|
|
|
|
const bool hasParens = Tok.is(tok::l_paren);
|
|
|
|
EnterExpressionEvaluationContext Unevaluated(
|
|
Actions, Sema::ExpressionEvaluationContext::Unevaluated,
|
|
Sema::ReuseLambdaContextDecl);
|
|
|
|
bool isCastExpr;
|
|
ParsedType CastTy;
|
|
SourceRange CastRange;
|
|
ExprResult Operand = Actions.CorrectDelayedTyposInExpr(
|
|
ParseExprAfterUnaryExprOrTypeTrait(OpTok, isCastExpr, CastTy, CastRange));
|
|
if (hasParens)
|
|
DS.setTypeofParensRange(CastRange);
|
|
|
|
if (CastRange.getEnd().isInvalid())
|
|
// FIXME: Not accurate, the range gets one token more than it should.
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
else
|
|
DS.SetRangeEnd(CastRange.getEnd());
|
|
|
|
if (isCastExpr) {
|
|
if (!CastTy) {
|
|
DS.SetTypeSpecError();
|
|
return;
|
|
}
|
|
|
|
const char *PrevSpec = nullptr;
|
|
unsigned DiagID;
|
|
// Check for duplicate type specifiers (e.g. "int typeof(int)").
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_typeofType, StartLoc, PrevSpec,
|
|
DiagID, CastTy,
|
|
Actions.getASTContext().getPrintingPolicy()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
return;
|
|
}
|
|
|
|
// If we get here, the operand to the typeof was an expression.
|
|
if (Operand.isInvalid()) {
|
|
DS.SetTypeSpecError();
|
|
return;
|
|
}
|
|
|
|
// We might need to transform the operand if it is potentially evaluated.
|
|
Operand = Actions.HandleExprEvaluationContextForTypeof(Operand.get());
|
|
if (Operand.isInvalid()) {
|
|
DS.SetTypeSpecError();
|
|
return;
|
|
}
|
|
|
|
const char *PrevSpec = nullptr;
|
|
unsigned DiagID;
|
|
// Check for duplicate type specifiers (e.g. "int typeof(int)").
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_typeofExpr, StartLoc, PrevSpec,
|
|
DiagID, Operand.get(),
|
|
Actions.getASTContext().getPrintingPolicy()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
}
|
|
|
|
/// [C11] atomic-specifier:
|
|
/// _Atomic ( type-name )
|
|
///
|
|
void Parser::ParseAtomicSpecifier(DeclSpec &DS) {
|
|
assert(Tok.is(tok::kw__Atomic) && NextToken().is(tok::l_paren) &&
|
|
"Not an atomic specifier");
|
|
|
|
SourceLocation StartLoc = ConsumeToken();
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.consumeOpen())
|
|
return;
|
|
|
|
TypeResult Result = ParseTypeName();
|
|
if (Result.isInvalid()) {
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
// Match the ')'
|
|
T.consumeClose();
|
|
|
|
if (T.getCloseLocation().isInvalid())
|
|
return;
|
|
|
|
DS.setTypeofParensRange(T.getRange());
|
|
DS.SetRangeEnd(T.getCloseLocation());
|
|
|
|
const char *PrevSpec = nullptr;
|
|
unsigned DiagID;
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_atomic, StartLoc, PrevSpec,
|
|
DiagID, Result.get(),
|
|
Actions.getASTContext().getPrintingPolicy()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
}
|
|
|
|
/// TryAltiVecVectorTokenOutOfLine - Out of line body that should only be called
|
|
/// from TryAltiVecVectorToken.
|
|
bool Parser::TryAltiVecVectorTokenOutOfLine() {
|
|
Token Next = NextToken();
|
|
switch (Next.getKind()) {
|
|
default: return false;
|
|
case tok::kw_short:
|
|
case tok::kw_long:
|
|
case tok::kw_signed:
|
|
case tok::kw_unsigned:
|
|
case tok::kw_void:
|
|
case tok::kw_char:
|
|
case tok::kw_int:
|
|
case tok::kw_float:
|
|
case tok::kw_double:
|
|
case tok::kw_bool:
|
|
case tok::kw___bool:
|
|
case tok::kw___pixel:
|
|
Tok.setKind(tok::kw___vector);
|
|
return true;
|
|
case tok::identifier:
|
|
if (Next.getIdentifierInfo() == Ident_pixel) {
|
|
Tok.setKind(tok::kw___vector);
|
|
return true;
|
|
}
|
|
if (Next.getIdentifierInfo() == Ident_bool) {
|
|
Tok.setKind(tok::kw___vector);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool Parser::TryAltiVecTokenOutOfLine(DeclSpec &DS, SourceLocation Loc,
|
|
const char *&PrevSpec, unsigned &DiagID,
|
|
bool &isInvalid) {
|
|
const PrintingPolicy &Policy = Actions.getASTContext().getPrintingPolicy();
|
|
if (Tok.getIdentifierInfo() == Ident_vector) {
|
|
Token Next = NextToken();
|
|
switch (Next.getKind()) {
|
|
case tok::kw_short:
|
|
case tok::kw_long:
|
|
case tok::kw_signed:
|
|
case tok::kw_unsigned:
|
|
case tok::kw_void:
|
|
case tok::kw_char:
|
|
case tok::kw_int:
|
|
case tok::kw_float:
|
|
case tok::kw_double:
|
|
case tok::kw_bool:
|
|
case tok::kw___bool:
|
|
case tok::kw___pixel:
|
|
isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID, Policy);
|
|
return true;
|
|
case tok::identifier:
|
|
if (Next.getIdentifierInfo() == Ident_pixel) {
|
|
isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID,Policy);
|
|
return true;
|
|
}
|
|
if (Next.getIdentifierInfo() == Ident_bool) {
|
|
isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID,Policy);
|
|
return true;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else if ((Tok.getIdentifierInfo() == Ident_pixel) &&
|
|
DS.isTypeAltiVecVector()) {
|
|
isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID, Policy);
|
|
return true;
|
|
} else if ((Tok.getIdentifierInfo() == Ident_bool) &&
|
|
DS.isTypeAltiVecVector()) {
|
|
isInvalid = DS.SetTypeAltiVecBool(true, Loc, PrevSpec, DiagID, Policy);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|