forked from OSchip/llvm-project
4747 lines
165 KiB
C++
4747 lines
165 KiB
C++
//===--- ParseDecl.cpp - Declaration Parsing ------------------------------===//
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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/ParseDiagnostic.h"
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#include "clang/Basic/OpenCL.h"
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#include "clang/Sema/Scope.h"
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#include "clang/Sema/ParsedTemplate.h"
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#include "clang/Sema/PrettyDeclStackTrace.h"
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#include "RAIIObjectsForParser.h"
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#include "llvm/ADT/SmallSet.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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Declarator::TheContext Context,
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AccessSpecifier AS,
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Decl **OwnedType) {
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// Parse the common declaration-specifiers piece.
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DeclSpec DS(AttrFactory);
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ParseSpecifierQualifierList(DS, AS);
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if (OwnedType)
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*OwnedType = DS.isTypeSpecOwned() ? DS.getRepAsDecl() : 0;
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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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/// 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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return llvm::StringSwitch<bool>(II.getName())
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#include "clang/Parse/AttrLateParsed.inc"
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.Default(false);
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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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/// FIXME: The GCC grammar/code for this construct implies we need two
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/// token lookahead. Comment from gcc: "If they start with an identifier
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/// which is followed by a comma or close parenthesis, then the arguments
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/// start with that identifier; otherwise they are an expression list."
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///
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/// GCC does not require the ',' between attribs in an attribute-list.
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///
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/// At the moment, I am not doing 2 token lookahead. I am also unaware of
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/// any attributes that don't work (based on my limited testing). Most
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/// attributes are very simple in practice. Until we find a bug, I don't see
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/// a pressing need to implement the 2 token lookahead.
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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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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, true); // 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, true); // 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 (Tok.is(tok::identifier) || isDeclarationSpecifier() ||
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Tok.is(tok::comma)) {
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if (Tok.is(tok::comma)) {
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// allows for empty/non-empty attributes. ((__vector_size__(16),,,,))
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ConsumeToken();
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continue;
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}
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// we have an identifier or declaration specifier (const, int, etc.)
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IdentifierInfo *AttrName = Tok.getIdentifierInfo();
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SourceLocation AttrNameLoc = ConsumeToken();
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if (Tok.is(tok::l_paren)) {
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// handle "parameterized" attributes
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if (LateAttrs && !ClassStack.empty() &&
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isAttributeLateParsed(*AttrName)) {
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// Delayed parsing is only available for attributes that occur
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// in certain locations within a class scope.
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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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getCurrentClass().LateParsedDeclarations.push_back(LA);
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// consume everything up to and including the matching right parens
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ConsumeAndStoreUntil(tok::r_paren, LA->Toks, true, false);
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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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} else {
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ParseGNUAttributeArgs(AttrName, AttrNameLoc, attrs, endLoc);
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}
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} else {
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attrs.addNew(AttrName, AttrNameLoc, 0, AttrNameLoc,
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0, SourceLocation(), 0, 0);
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}
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}
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if (ExpectAndConsume(tok::r_paren, diag::err_expected_rparen))
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SkipUntil(tok::r_paren, false);
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SourceLocation Loc = Tok.getLocation();
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if (ExpectAndConsume(tok::r_paren, diag::err_expected_rparen)) {
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SkipUntil(tok::r_paren, false);
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}
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if (endLoc)
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*endLoc = Loc;
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}
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}
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/// Parse the arguments to a parameterized GNU attribute
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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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assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
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// Availability attributes have their own grammar.
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if (AttrName->isStr("availability")) {
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ParseAvailabilityAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc);
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return;
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}
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// Thread safety attributes fit into the FIXME case above, so we
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// just parse the arguments as a list of expressions
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if (IsThreadSafetyAttribute(AttrName->getName())) {
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ParseThreadSafetyAttribute(*AttrName, AttrNameLoc, Attrs, EndLoc);
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return;
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}
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ConsumeParen(); // ignore the left paren loc for now
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IdentifierInfo *ParmName = 0;
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SourceLocation ParmLoc;
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bool BuiltinType = false;
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switch (Tok.getKind()) {
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case tok::kw_char:
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case tok::kw_wchar_t:
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case tok::kw_char16_t:
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case tok::kw_char32_t:
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case tok::kw_bool:
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case tok::kw_short:
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case tok::kw_int:
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case tok::kw_long:
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case tok::kw___int64:
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case tok::kw_signed:
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case tok::kw_unsigned:
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case tok::kw_float:
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case tok::kw_double:
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case tok::kw_void:
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case tok::kw_typeof:
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// __attribute__(( vec_type_hint(char) ))
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// FIXME: Don't just discard the builtin type token.
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ConsumeToken();
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BuiltinType = true;
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break;
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case tok::identifier:
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ParmName = Tok.getIdentifierInfo();
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ParmLoc = ConsumeToken();
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break;
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default:
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break;
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}
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ExprVector ArgExprs(Actions);
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if (!BuiltinType &&
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(ParmLoc.isValid() ? Tok.is(tok::comma) : Tok.isNot(tok::r_paren))) {
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// Eat the comma.
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if (ParmLoc.isValid())
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ConsumeToken();
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// Parse the non-empty comma-separated list of expressions.
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while (1) {
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ExprResult ArgExpr(ParseAssignmentExpression());
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if (ArgExpr.isInvalid()) {
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SkipUntil(tok::r_paren);
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return;
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}
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ArgExprs.push_back(ArgExpr.release());
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if (Tok.isNot(tok::comma))
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break;
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ConsumeToken(); // Eat the comma, move to the next argument
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}
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}
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else if (Tok.is(tok::less) && AttrName->isStr("iboutletcollection")) {
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if (!ExpectAndConsume(tok::less, diag::err_expected_less_after, "<",
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tok::greater)) {
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while (Tok.is(tok::identifier)) {
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ConsumeToken();
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if (Tok.is(tok::greater))
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break;
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if (Tok.is(tok::comma)) {
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ConsumeToken();
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continue;
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}
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}
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if (Tok.isNot(tok::greater))
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Diag(Tok, diag::err_iboutletcollection_with_protocol);
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SkipUntil(tok::r_paren, false, true); // skip until ')'
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}
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}
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SourceLocation RParen = Tok.getLocation();
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if (!ExpectAndConsume(tok::r_paren, diag::err_expected_rparen)) {
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AttributeList *attr =
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Attrs.addNew(AttrName, SourceRange(AttrNameLoc, RParen), 0, AttrNameLoc,
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ParmName, ParmLoc, ArgExprs.take(), ArgExprs.size());
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if (BuiltinType && attr->getKind() == AttributeList::AT_IBOutletCollection)
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Diag(Tok, diag::err_iboutletcollection_builtintype);
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}
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}
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/// ParseMicrosoftDeclSpec - Parse an __declspec construct
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///
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/// [MS] decl-specifier:
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/// __declspec ( extended-decl-modifier-seq )
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///
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/// [MS] extended-decl-modifier-seq:
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/// extended-decl-modifier[opt]
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/// extended-decl-modifier extended-decl-modifier-seq
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void Parser::ParseMicrosoftDeclSpec(ParsedAttributes &attrs) {
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assert(Tok.is(tok::kw___declspec) && "Not a declspec!");
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ConsumeToken();
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if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after,
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"declspec")) {
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SkipUntil(tok::r_paren, true); // skip until ) or ;
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return;
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}
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while (Tok.getIdentifierInfo()) {
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IdentifierInfo *AttrName = Tok.getIdentifierInfo();
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SourceLocation AttrNameLoc = ConsumeToken();
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// FIXME: Remove this when we have proper __declspec(property()) support.
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// Just skip everything inside property().
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if (AttrName->getName() == "property") {
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ConsumeParen();
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SkipUntil(tok::r_paren);
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}
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if (Tok.is(tok::l_paren)) {
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ConsumeParen();
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// FIXME: This doesn't parse __declspec(property(get=get_func_name))
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// correctly.
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ExprResult ArgExpr(ParseAssignmentExpression());
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if (!ArgExpr.isInvalid()) {
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Expr *ExprList = ArgExpr.take();
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attrs.addNew(AttrName, AttrNameLoc, 0, AttrNameLoc, 0,
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SourceLocation(), &ExprList, 1, true);
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}
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if (ExpectAndConsume(tok::r_paren, diag::err_expected_rparen))
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SkipUntil(tok::r_paren, false);
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} else {
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attrs.addNew(AttrName, AttrNameLoc, 0, AttrNameLoc,
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0, SourceLocation(), 0, 0, true);
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}
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}
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if (ExpectAndConsume(tok::r_paren, diag::err_expected_rparen))
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SkipUntil(tok::r_paren, false);
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return;
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}
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void Parser::ParseMicrosoftTypeAttributes(ParsedAttributes &attrs) {
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// Treat these like attributes
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// FIXME: Allow Sema to distinguish between these and real attributes!
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while (Tok.is(tok::kw___fastcall) || Tok.is(tok::kw___stdcall) ||
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Tok.is(tok::kw___thiscall) || Tok.is(tok::kw___cdecl) ||
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Tok.is(tok::kw___ptr64) || Tok.is(tok::kw___w64) ||
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Tok.is(tok::kw___ptr32) ||
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Tok.is(tok::kw___unaligned)) {
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IdentifierInfo *AttrName = Tok.getIdentifierInfo();
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SourceLocation AttrNameLoc = ConsumeToken();
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if (Tok.is(tok::kw___ptr64) || Tok.is(tok::kw___w64) ||
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Tok.is(tok::kw___ptr32))
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// FIXME: Support these properly!
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continue;
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attrs.addNew(AttrName, AttrNameLoc, 0, AttrNameLoc, 0,
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SourceLocation(), 0, 0, true);
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}
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}
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void Parser::ParseBorlandTypeAttributes(ParsedAttributes &attrs) {
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// Treat these like attributes
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while (Tok.is(tok::kw___pascal)) {
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IdentifierInfo *AttrName = Tok.getIdentifierInfo();
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SourceLocation AttrNameLoc = ConsumeToken();
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attrs.addNew(AttrName, AttrNameLoc, 0, AttrNameLoc, 0,
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SourceLocation(), 0, 0, true);
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}
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}
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void Parser::ParseOpenCLAttributes(ParsedAttributes &attrs) {
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// Treat these like attributes
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while (Tok.is(tok::kw___kernel)) {
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SourceLocation AttrNameLoc = ConsumeToken();
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attrs.addNew(PP.getIdentifierInfo("opencl_kernel_function"),
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AttrNameLoc, 0, AttrNameLoc, 0,
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SourceLocation(), 0, 0, false);
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}
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}
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void Parser::ParseOpenCLQualifiers(DeclSpec &DS) {
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SourceLocation Loc = Tok.getLocation();
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switch(Tok.getKind()) {
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// OpenCL qualifiers:
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case tok::kw___private:
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case tok::kw_private:
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DS.getAttributes().addNewInteger(
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Actions.getASTContext(),
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PP.getIdentifierInfo("address_space"), Loc, 0);
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break;
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case tok::kw___global:
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DS.getAttributes().addNewInteger(
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Actions.getASTContext(),
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PP.getIdentifierInfo("address_space"), Loc, LangAS::opencl_global);
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break;
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case tok::kw___local:
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DS.getAttributes().addNewInteger(
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Actions.getASTContext(),
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PP.getIdentifierInfo("address_space"), Loc, LangAS::opencl_local);
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break;
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case tok::kw___constant:
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DS.getAttributes().addNewInteger(
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Actions.getASTContext(),
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PP.getIdentifierInfo("address_space"), Loc, LangAS::opencl_constant);
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break;
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case tok::kw___read_only:
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DS.getAttributes().addNewInteger(
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Actions.getASTContext(),
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PP.getIdentifierInfo("opencl_image_access"), Loc, CLIA_read_only);
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break;
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case tok::kw___write_only:
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DS.getAttributes().addNewInteger(
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Actions.getASTContext(),
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PP.getIdentifierInfo("opencl_image_access"), Loc, CLIA_write_only);
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break;
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case tok::kw___read_write:
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DS.getAttributes().addNewInteger(
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Actions.getASTContext(),
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PP.getIdentifierInfo("opencl_image_access"), Loc, CLIA_read_write);
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break;
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default: break;
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}
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}
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/// \brief Parse a version number.
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///
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/// version:
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/// simple-integer
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/// simple-integer ',' simple-integer
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/// simple-integer ',' simple-integer ',' simple-integer
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VersionTuple Parser::ParseVersionTuple(SourceRange &Range) {
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Range = Tok.getLocation();
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if (!Tok.is(tok::numeric_constant)) {
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Diag(Tok, diag::err_expected_version);
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SkipUntil(tok::comma, tok::r_paren, true, true, true);
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return VersionTuple();
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}
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// Parse the major (and possibly minor and subminor) versions, which
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// are stored in the numeric constant. We utilize a quirk of the
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// lexer, which is that it handles something like 1.2.3 as a single
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// numeric constant, rather than two separate tokens.
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llvm::SmallString<512> Buffer;
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Buffer.resize(Tok.getLength()+1);
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const char *ThisTokBegin = &Buffer[0];
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// Get the spelling of the token, which eliminates trigraphs, etc.
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bool Invalid = false;
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unsigned ActualLength = PP.getSpelling(Tok, ThisTokBegin, &Invalid);
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if (Invalid)
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return VersionTuple();
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// Parse the major version.
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unsigned AfterMajor = 0;
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unsigned Major = 0;
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while (AfterMajor < ActualLength && isdigit(ThisTokBegin[AfterMajor])) {
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Major = Major * 10 + ThisTokBegin[AfterMajor] - '0';
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++AfterMajor;
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}
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if (AfterMajor == 0) {
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Diag(Tok, diag::err_expected_version);
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SkipUntil(tok::comma, tok::r_paren, true, true, true);
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return VersionTuple();
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}
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if (AfterMajor == ActualLength) {
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ConsumeToken();
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// We only had a single version component.
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if (Major == 0) {
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Diag(Tok, diag::err_zero_version);
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return VersionTuple();
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}
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return VersionTuple(Major);
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}
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if (ThisTokBegin[AfterMajor] != '.' || (AfterMajor + 1 == ActualLength)) {
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Diag(Tok, diag::err_expected_version);
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SkipUntil(tok::comma, tok::r_paren, true, true, true);
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return VersionTuple();
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}
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// Parse the minor version.
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unsigned AfterMinor = AfterMajor + 1;
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unsigned Minor = 0;
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while (AfterMinor < ActualLength && isdigit(ThisTokBegin[AfterMinor])) {
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Minor = Minor * 10 + ThisTokBegin[AfterMinor] - '0';
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++AfterMinor;
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}
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if (AfterMinor == ActualLength) {
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ConsumeToken();
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// We had major.minor.
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if (Major == 0 && Minor == 0) {
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Diag(Tok, diag::err_zero_version);
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return VersionTuple();
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}
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return VersionTuple(Major, Minor);
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}
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|
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// If what follows is not a '.', we have a problem.
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if (ThisTokBegin[AfterMinor] != '.') {
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Diag(Tok, diag::err_expected_version);
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SkipUntil(tok::comma, tok::r_paren, true, true, true);
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return VersionTuple();
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}
|
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|
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// Parse the subminor version.
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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, true, true, true);
|
|
return VersionTuple();
|
|
}
|
|
ConsumeToken();
|
|
return VersionTuple(Major, Minor, Subminor);
|
|
}
|
|
|
|
/// \brief Parse the contents of the "availability" attribute.
|
|
///
|
|
/// availability-attribute:
|
|
/// 'availability' '(' platform ',' version-arg-list ')'
|
|
///
|
|
/// platform:
|
|
/// identifier
|
|
///
|
|
/// version-arg-list:
|
|
/// version-arg
|
|
/// version-arg ',' version-arg-list
|
|
///
|
|
/// version-arg:
|
|
/// 'introduced' '=' version
|
|
/// 'deprecated' '=' version
|
|
/// 'removed' = version
|
|
/// 'unavailable'
|
|
void Parser::ParseAvailabilityAttribute(IdentifierInfo &Availability,
|
|
SourceLocation AvailabilityLoc,
|
|
ParsedAttributes &attrs,
|
|
SourceLocation *endLoc) {
|
|
SourceLocation PlatformLoc;
|
|
IdentifierInfo *Platform = 0;
|
|
|
|
enum { Introduced, Deprecated, Obsoleted, Unknown };
|
|
AvailabilityChange Changes[Unknown];
|
|
|
|
// Opening '('.
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.consumeOpen()) {
|
|
Diag(Tok, diag::err_expected_lparen);
|
|
return;
|
|
}
|
|
|
|
// Parse the platform name,
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_availability_expected_platform);
|
|
SkipUntil(tok::r_paren);
|
|
return;
|
|
}
|
|
Platform = Tok.getIdentifierInfo();
|
|
PlatformLoc = ConsumeToken();
|
|
|
|
// Parse the ',' following the platform name.
|
|
if (ExpectAndConsume(tok::comma, diag::err_expected_comma, "", tok::r_paren))
|
|
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");
|
|
}
|
|
|
|
// Parse the set of introductions/deprecations/removals.
|
|
SourceLocation UnavailableLoc;
|
|
do {
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_availability_expected_change);
|
|
SkipUntil(tok::r_paren);
|
|
return;
|
|
}
|
|
IdentifierInfo *Keyword = Tok.getIdentifierInfo();
|
|
SourceLocation KeywordLoc = ConsumeToken();
|
|
|
|
if (Keyword == Ident_unavailable) {
|
|
if (UnavailableLoc.isValid()) {
|
|
Diag(KeywordLoc, diag::err_availability_redundant)
|
|
<< Keyword << SourceRange(UnavailableLoc);
|
|
}
|
|
UnavailableLoc = KeywordLoc;
|
|
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
|
|
ConsumeToken();
|
|
continue;
|
|
}
|
|
|
|
if (Tok.isNot(tok::equal)) {
|
|
Diag(Tok, diag::err_expected_equal_after)
|
|
<< Keyword;
|
|
SkipUntil(tok::r_paren);
|
|
return;
|
|
}
|
|
ConsumeToken();
|
|
|
|
SourceRange VersionRange;
|
|
VersionTuple Version = ParseVersionTuple(VersionRange);
|
|
|
|
if (Version.empty()) {
|
|
SkipUntil(tok::r_paren);
|
|
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;
|
|
}
|
|
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
|
|
ConsumeToken();
|
|
} while (true);
|
|
|
|
// 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()),
|
|
0, SourceLocation(),
|
|
Platform, PlatformLoc,
|
|
Changes[Introduced],
|
|
Changes[Deprecated],
|
|
Changes[Obsoleted],
|
|
UnavailableLoc, false, false);
|
|
}
|
|
|
|
|
|
// 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);
|
|
}
|
|
|
|
/// 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 to include Scope::ThisScope.
|
|
bool AlreadyHasClassScope = Class.TopLevelClass;
|
|
unsigned ScopeFlags = Scope::ClassScope|Scope::DeclScope|Scope::ThisScope;
|
|
ParseScope ClassScope(this, ScopeFlags, !AlreadyHasClassScope);
|
|
ParseScopeFlags ClassScopeFlags(this, ScopeFlags, AlreadyHasClassScope);
|
|
|
|
for (unsigned i = 0, ni = Class.LateParsedDeclarations.size(); i < ni; ++i) {
|
|
Class.LateParsedDeclarations[i]->ParseLexedAttributes();
|
|
}
|
|
}
|
|
|
|
/// \brief 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) {
|
|
// Save the current token position.
|
|
SourceLocation OrigLoc = Tok.getLocation();
|
|
|
|
// 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.data(), LA.Toks.size(), true, false);
|
|
// Consume the previously pushed token.
|
|
ConsumeAnyToken();
|
|
|
|
ParsedAttributes Attrs(AttrFactory);
|
|
SourceLocation endLoc;
|
|
|
|
// If the Decl is templatized, add template parameters to scope.
|
|
bool HasTemplateScope = LA.D && LA.D->isTemplateDecl();
|
|
ParseScope TempScope(this, Scope::TemplateParamScope, HasTemplateScope);
|
|
if (HasTemplateScope)
|
|
Actions.ActOnReenterTemplateScope(Actions.CurScope, LA.D);
|
|
|
|
// If the Decl is on a function, add function parameters to the scope.
|
|
bool HasFunctionScope = LA.D && LA.D->isFunctionOrFunctionTemplate();
|
|
ParseScope FnScope(this, Scope::FnScope|Scope::DeclScope, HasFunctionScope);
|
|
if (HasFunctionScope)
|
|
Actions.ActOnReenterFunctionContext(Actions.CurScope, LA.D);
|
|
|
|
ParseGNUAttributeArgs(&LA.AttrName, LA.AttrNameLoc, Attrs, &endLoc);
|
|
|
|
if (HasFunctionScope) {
|
|
Actions.ActOnExitFunctionContext();
|
|
FnScope.Exit(); // Pop scope, and remove Decls from IdResolver
|
|
}
|
|
if (HasTemplateScope) {
|
|
TempScope.Exit();
|
|
}
|
|
|
|
// Late parsed attributes must be attached to Decls by hand. If the
|
|
// LA.D is not set, then this was not done properly.
|
|
assert(LA.D && "No decl attached to late parsed attribute");
|
|
Actions.ActOnFinishDelayedAttribute(getCurScope(), LA.D, Attrs);
|
|
|
|
if (Tok.getLocation() != OrigLoc) {
|
|
// 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.
|
|
// Since this is an uncommon situation that should be avoided, use the
|
|
// expensive isBeforeInTranslationUnit call.
|
|
if (PP.getSourceManager().isBeforeInTranslationUnit(Tok.getLocation(),
|
|
OrigLoc))
|
|
while (Tok.getLocation() != OrigLoc && Tok.isNot(tok::eof))
|
|
ConsumeAnyToken();
|
|
}
|
|
}
|
|
|
|
/// \brief Wrapper around a case statement checking if AttrName is
|
|
/// one of the thread safety attributes
|
|
bool Parser::IsThreadSafetyAttribute(llvm::StringRef AttrName){
|
|
return llvm::StringSwitch<bool>(AttrName)
|
|
.Case("guarded_by", true)
|
|
.Case("guarded_var", true)
|
|
.Case("pt_guarded_by", true)
|
|
.Case("pt_guarded_var", true)
|
|
.Case("lockable", true)
|
|
.Case("scoped_lockable", true)
|
|
.Case("no_thread_safety_analysis", true)
|
|
.Case("acquired_after", true)
|
|
.Case("acquired_before", true)
|
|
.Case("exclusive_lock_function", true)
|
|
.Case("shared_lock_function", true)
|
|
.Case("exclusive_trylock_function", true)
|
|
.Case("shared_trylock_function", true)
|
|
.Case("unlock_function", true)
|
|
.Case("lock_returned", true)
|
|
.Case("locks_excluded", true)
|
|
.Case("exclusive_locks_required", true)
|
|
.Case("shared_locks_required", true)
|
|
.Default(false);
|
|
}
|
|
|
|
/// \brief Parse the contents of thread safety attributes. These
|
|
/// should always be parsed as an expression list.
|
|
///
|
|
/// We need to special case the parsing due to the fact that if the first token
|
|
/// of the first argument is an identifier, the main parse loop will store
|
|
/// that token as a "parameter" and the rest of
|
|
/// the arguments will be added to a list of "arguments". However,
|
|
/// subsequent tokens in the first argument are lost. We instead parse each
|
|
/// argument as an expression and add all arguments to the list of "arguments".
|
|
/// In future, we will take advantage of this special case to also
|
|
/// deal with some argument scoping issues here (for example, referring to a
|
|
/// function parameter in the attribute on that function).
|
|
void Parser::ParseThreadSafetyAttribute(IdentifierInfo &AttrName,
|
|
SourceLocation AttrNameLoc,
|
|
ParsedAttributes &Attrs,
|
|
SourceLocation *EndLoc) {
|
|
assert(Tok.is(tok::l_paren) && "Attribute arg list not starting with '('");
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
T.consumeOpen();
|
|
|
|
ExprVector ArgExprs(Actions);
|
|
bool ArgExprsOk = true;
|
|
|
|
// now parse the list of expressions
|
|
while (1) {
|
|
ExprResult ArgExpr(ParseAssignmentExpression());
|
|
if (ArgExpr.isInvalid()) {
|
|
ArgExprsOk = false;
|
|
T.consumeClose();
|
|
break;
|
|
} else {
|
|
ArgExprs.push_back(ArgExpr.release());
|
|
}
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
ConsumeToken(); // Eat the comma, move to the next argument
|
|
}
|
|
// Match the ')'.
|
|
if (ArgExprsOk && !T.consumeClose()) {
|
|
Attrs.addNew(&AttrName, AttrNameLoc, 0, AttrNameLoc, 0, SourceLocation(),
|
|
ArgExprs.take(), ArgExprs.size());
|
|
}
|
|
if (EndLoc)
|
|
*EndLoc = T.getCloseLocation();
|
|
}
|
|
|
|
void Parser::DiagnoseProhibitedAttributes(ParsedAttributesWithRange &attrs) {
|
|
Diag(attrs.Range.getBegin(), diag::err_attributes_not_allowed)
|
|
<< attrs.Range;
|
|
}
|
|
|
|
/// ParseDeclaration - Parse a full 'declaration', which consists of
|
|
/// declaration-specifiers, some number of declarators, and a semicolon.
|
|
/// 'Context' should be a Declarator::TheContext 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++0x/C1X] static_assert-declaration
|
|
/// others... [FIXME]
|
|
///
|
|
Parser::DeclGroupPtrTy Parser::ParseDeclaration(StmtVector &Stmts,
|
|
unsigned 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 = 0;
|
|
Decl *OwnedType = 0;
|
|
switch (Tok.getKind()) {
|
|
case tok::kw_template:
|
|
case tok::kw_export:
|
|
ProhibitAttributes(attrs);
|
|
SingleDecl = ParseDeclarationStartingWithTemplate(Context, DeclEnd);
|
|
break;
|
|
case tok::kw_inline:
|
|
// Could be the start of an inline namespace. Allowed as an ext in C++03.
|
|
if (getLang().CPlusPlus && NextToken().is(tok::kw_namespace)) {
|
|
ProhibitAttributes(attrs);
|
|
SourceLocation InlineLoc = ConsumeToken();
|
|
SingleDecl = ParseNamespace(Context, DeclEnd, InlineLoc);
|
|
break;
|
|
}
|
|
return ParseSimpleDeclaration(Stmts, Context, DeclEnd, attrs,
|
|
true);
|
|
case tok::kw_namespace:
|
|
ProhibitAttributes(attrs);
|
|
SingleDecl = ParseNamespace(Context, DeclEnd);
|
|
break;
|
|
case tok::kw_using:
|
|
SingleDecl = ParseUsingDirectiveOrDeclaration(Context, ParsedTemplateInfo(),
|
|
DeclEnd, attrs, &OwnedType);
|
|
break;
|
|
case tok::kw_static_assert:
|
|
case tok::kw__Static_assert:
|
|
ProhibitAttributes(attrs);
|
|
SingleDecl = ParseStaticAssertDeclaration(DeclEnd);
|
|
break;
|
|
default:
|
|
return ParseSimpleDeclaration(Stmts, Context, DeclEnd, attrs, true);
|
|
}
|
|
|
|
// This routine returns a DeclGroup, if the thing we parsed only contains a
|
|
// single decl, convert it now. Alias declarations can also declare a type;
|
|
// include that too if it is present.
|
|
return Actions.ConvertDeclToDeclGroup(SingleDecl, OwnedType);
|
|
}
|
|
|
|
/// simple-declaration: [C99 6.7: declaration] [C++ 7p1: dcl.dcl]
|
|
/// declaration-specifiers init-declarator-list[opt] ';'
|
|
///[C90/C++]init-declarator-list ';' [TODO]
|
|
/// [OMP] threadprivate-directive [TODO]
|
|
///
|
|
/// for-range-declaration: [C++0x 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(StmtVector &Stmts,
|
|
unsigned Context,
|
|
SourceLocation &DeclEnd,
|
|
ParsedAttributes &attrs,
|
|
bool RequireSemi,
|
|
ForRangeInit *FRI) {
|
|
// Parse the common declaration-specifiers piece.
|
|
ParsingDeclSpec DS(*this);
|
|
DS.takeAttributesFrom(attrs);
|
|
|
|
ParseDeclarationSpecifiers(DS, ParsedTemplateInfo(), AS_none,
|
|
getDeclSpecContextFromDeclaratorContext(Context));
|
|
StmtResult R = Actions.ActOnVlaStmt(DS);
|
|
if (R.isUsable())
|
|
Stmts.push_back(R.release());
|
|
|
|
// C99 6.7.2.3p6: Handle "struct-or-union identifier;", "enum { X };"
|
|
// declaration-specifiers init-declarator-list[opt] ';'
|
|
if (Tok.is(tok::semi)) {
|
|
if (RequireSemi) ConsumeToken();
|
|
Decl *TheDecl = Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none,
|
|
DS);
|
|
DS.complete(TheDecl);
|
|
return Actions.ConvertDeclToDeclGroup(TheDecl);
|
|
}
|
|
|
|
return ParseDeclGroup(DS, Context, /*FunctionDefs=*/ false, &DeclEnd, FRI);
|
|
}
|
|
|
|
/// Returns true if this might be the start of a declarator, or a common typo
|
|
/// for a declarator.
|
|
bool Parser::MightBeDeclarator(unsigned 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:
|
|
case tok::colon: // Might be a typo for '::'.
|
|
return getLang().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.
|
|
return getLang().CPlusPlus && Context == Declarator::FileContext;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/// 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,
|
|
unsigned Context,
|
|
bool AllowFunctionDefinitions,
|
|
SourceLocation *DeclEnd,
|
|
ForRangeInit *FRI) {
|
|
// Parse the first declarator.
|
|
ParsingDeclarator D(*this, DS, static_cast<Declarator::TheContext>(Context));
|
|
ParseDeclarator(D);
|
|
|
|
// Bail out if the first declarator didn't seem well-formed.
|
|
if (!D.hasName() && !D.mayOmitIdentifier()) {
|
|
// Skip until ; or }.
|
|
SkipUntil(tok::r_brace, true, true);
|
|
if (Tok.is(tok::semi))
|
|
ConsumeToken();
|
|
return DeclGroupPtrTy();
|
|
}
|
|
|
|
// Check to see if we have a function *definition* which must have a body.
|
|
if (AllowFunctionDefinitions && 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()) {
|
|
|
|
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);
|
|
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 DeclGroupPtrTy();
|
|
}
|
|
}
|
|
|
|
if (ParseAttributesAfterDeclarator(D))
|
|
return DeclGroupPtrTy();
|
|
|
|
// 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.
|
|
if (FRI && Tok.is(tok::colon)) {
|
|
FRI->ColonLoc = ConsumeToken();
|
|
if (Tok.is(tok::l_brace))
|
|
FRI->RangeExpr = ParseBraceInitializer();
|
|
else
|
|
FRI->RangeExpr = ParseExpression();
|
|
Decl *ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
|
|
Actions.ActOnCXXForRangeDecl(ThisDecl);
|
|
Actions.FinalizeDeclaration(ThisDecl);
|
|
return Actions.FinalizeDeclaratorGroup(getCurScope(), DS, &ThisDecl, 1);
|
|
}
|
|
|
|
SmallVector<Decl *, 8> DeclsInGroup;
|
|
Decl *FirstDecl = ParseDeclarationAfterDeclaratorAndAttributes(D);
|
|
D.complete(FirstDecl);
|
|
if (FirstDecl)
|
|
DeclsInGroup.push_back(FirstDecl);
|
|
|
|
bool ExpectSemi = Context != Declarator::ForContext;
|
|
|
|
// If we don't have a comma, it is either the end of the list (a ';') or an
|
|
// error, bail out.
|
|
while (Tok.is(tok::comma)) {
|
|
SourceLocation CommaLoc = ConsumeToken();
|
|
|
|
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();
|
|
|
|
// 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);
|
|
|
|
ParseDeclarator(D);
|
|
|
|
Decl *ThisDecl = ParseDeclarationAfterDeclarator(D);
|
|
D.complete(ThisDecl);
|
|
if (ThisDecl)
|
|
DeclsInGroup.push_back(ThisDecl);
|
|
}
|
|
|
|
if (DeclEnd)
|
|
*DeclEnd = Tok.getLocation();
|
|
|
|
if (ExpectSemi &&
|
|
ExpectAndConsume(tok::semi,
|
|
Context == Declarator::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, true, true);
|
|
if (Tok.is(tok::semi))
|
|
ConsumeToken();
|
|
}
|
|
}
|
|
|
|
return Actions.FinalizeDeclaratorGroup(getCurScope(), DS,
|
|
DeclsInGroup.data(),
|
|
DeclsInGroup.size());
|
|
}
|
|
|
|
/// Parse an optional simple-asm-expr and attributes, and attach them to a
|
|
/// declarator. Returns true on an error.
|
|
bool Parser::ParseAttributesAfterDeclarator(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, true, true);
|
|
return true;
|
|
}
|
|
|
|
D.setAsmLabel(AsmLabel.release());
|
|
D.SetRangeEnd(Loc);
|
|
}
|
|
|
|
MaybeParseGNUAttributes(D);
|
|
return false;
|
|
}
|
|
|
|
/// \brief 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 (ParseAttributesAfterDeclarator(D))
|
|
return 0;
|
|
|
|
return ParseDeclarationAfterDeclaratorAndAttributes(D, TemplateInfo);
|
|
}
|
|
|
|
Decl *Parser::ParseDeclarationAfterDeclaratorAndAttributes(Declarator &D,
|
|
const ParsedTemplateInfo &TemplateInfo) {
|
|
// Inform the current actions module that we just parsed this declarator.
|
|
Decl *ThisDecl = 0;
|
|
switch (TemplateInfo.Kind) {
|
|
case ParsedTemplateInfo::NonTemplate:
|
|
ThisDecl = Actions.ActOnDeclarator(getCurScope(), D);
|
|
break;
|
|
|
|
case ParsedTemplateInfo::Template:
|
|
case ParsedTemplateInfo::ExplicitSpecialization:
|
|
ThisDecl = Actions.ActOnTemplateDeclarator(getCurScope(),
|
|
MultiTemplateParamsArg(Actions,
|
|
TemplateInfo.TemplateParams->data(),
|
|
TemplateInfo.TemplateParams->size()),
|
|
D);
|
|
break;
|
|
|
|
case ParsedTemplateInfo::ExplicitInstantiation: {
|
|
DeclResult ThisRes
|
|
= Actions.ActOnExplicitInstantiation(getCurScope(),
|
|
TemplateInfo.ExternLoc,
|
|
TemplateInfo.TemplateLoc,
|
|
D);
|
|
if (ThisRes.isInvalid()) {
|
|
SkipUntil(tok::semi, true, true);
|
|
return 0;
|
|
}
|
|
|
|
ThisDecl = ThisRes.get();
|
|
break;
|
|
}
|
|
}
|
|
|
|
bool TypeContainsAuto =
|
|
D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto;
|
|
|
|
// Parse declarator '=' initializer.
|
|
if (isTokenEqualOrMistypedEqualEqual(
|
|
diag::err_invalid_equalequal_after_declarator)) {
|
|
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(Tok, diag::err_default_delete_in_multiple_declaration)
|
|
<< 1 /* delete */;
|
|
else
|
|
Diag(ConsumeToken(), diag::err_default_special_members);
|
|
} else {
|
|
if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) {
|
|
EnterScope(0);
|
|
Actions.ActOnCXXEnterDeclInitializer(getCurScope(), ThisDecl);
|
|
}
|
|
|
|
if (Tok.is(tok::code_completion)) {
|
|
Actions.CodeCompleteInitializer(getCurScope(), ThisDecl);
|
|
cutOffParsing();
|
|
return 0;
|
|
}
|
|
|
|
ExprResult Init(ParseInitializer());
|
|
|
|
if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) {
|
|
Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl);
|
|
ExitScope();
|
|
}
|
|
|
|
if (Init.isInvalid()) {
|
|
SkipUntil(tok::comma, true, true);
|
|
Actions.ActOnInitializerError(ThisDecl);
|
|
} else
|
|
Actions.AddInitializerToDecl(ThisDecl, Init.take(),
|
|
/*DirectInit=*/false, TypeContainsAuto);
|
|
}
|
|
} else if (Tok.is(tok::l_paren)) {
|
|
// Parse C++ direct initializer: '(' expression-list ')'
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
T.consumeOpen();
|
|
|
|
ExprVector Exprs(Actions);
|
|
CommaLocsTy CommaLocs;
|
|
|
|
if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) {
|
|
EnterScope(0);
|
|
Actions.ActOnCXXEnterDeclInitializer(getCurScope(), ThisDecl);
|
|
}
|
|
|
|
if (ParseExpressionList(Exprs, CommaLocs)) {
|
|
SkipUntil(tok::r_paren);
|
|
|
|
if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) {
|
|
Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl);
|
|
ExitScope();
|
|
}
|
|
} else {
|
|
// Match the ')'.
|
|
T.consumeClose();
|
|
|
|
assert(!Exprs.empty() && Exprs.size()-1 == CommaLocs.size() &&
|
|
"Unexpected number of commas!");
|
|
|
|
if (getLang().CPlusPlus && D.getCXXScopeSpec().isSet()) {
|
|
Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl);
|
|
ExitScope();
|
|
}
|
|
|
|
Actions.AddCXXDirectInitializerToDecl(ThisDecl, T.getOpenLocation(),
|
|
move_arg(Exprs),
|
|
T.getCloseLocation(),
|
|
TypeContainsAuto);
|
|
}
|
|
} else if (getLang().CPlusPlus0x && Tok.is(tok::l_brace)) {
|
|
// Parse C++0x braced-init-list.
|
|
Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
|
|
|
|
if (D.getCXXScopeSpec().isSet()) {
|
|
EnterScope(0);
|
|
Actions.ActOnCXXEnterDeclInitializer(getCurScope(), ThisDecl);
|
|
}
|
|
|
|
ExprResult Init(ParseBraceInitializer());
|
|
|
|
if (D.getCXXScopeSpec().isSet()) {
|
|
Actions.ActOnCXXExitDeclInitializer(getCurScope(), ThisDecl);
|
|
ExitScope();
|
|
}
|
|
|
|
if (Init.isInvalid()) {
|
|
Actions.ActOnInitializerError(ThisDecl);
|
|
} else
|
|
Actions.AddInitializerToDecl(ThisDecl, Init.take(),
|
|
/*DirectInit=*/true, TypeContainsAuto);
|
|
|
|
} else {
|
|
Actions.ActOnUninitializedDecl(ThisDecl, TypeContainsAuto);
|
|
}
|
|
|
|
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) {
|
|
/// 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);
|
|
|
|
// Validate declspec for type-name.
|
|
unsigned Specs = DS.getParsedSpecifiers();
|
|
if (Specs == DeclSpec::PQ_None && !DS.getNumProtocolQualifiers() &&
|
|
!DS.hasAttributes())
|
|
Diag(Tok, diag::err_typename_requires_specqual);
|
|
|
|
// 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.getThreadSpecLoc(), diag::err_typename_invalid_storageclass);
|
|
DS.ClearStorageClassSpecs();
|
|
}
|
|
|
|
// Issue diagnostic and remove function specfier 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();
|
|
}
|
|
}
|
|
|
|
/// 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.is(tok::l_square) || T.is(tok::l_paren) || T.is(tok::r_paren) ||
|
|
T.is(tok::semi) || T.is(tok::comma) || T.is(tok::equal) ||
|
|
T.is(tok::kw_asm) || T.is(tok::l_brace) || T.is(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) {
|
|
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 identifer 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, we'd do lookahead to try to do better recovery.
|
|
if (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;
|
|
}
|
|
|
|
// 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 == 0) {
|
|
const char *TagName = 0, *FixitTagName = 0;
|
|
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_class:
|
|
TagName="class" ; FixitTagName = "class " ;TagKind=tok::kw_class ;break;
|
|
}
|
|
|
|
if (TagName) {
|
|
Diag(Loc, diag::err_use_of_tag_name_without_tag)
|
|
<< Tok.getIdentifierInfo() << TagName << getLang().CPlusPlus
|
|
<< FixItHint::CreateInsertion(Tok.getLocation(),FixitTagName);
|
|
|
|
// Parse this as a tag as if the missing tag were present.
|
|
if (TagKind == tok::kw_enum)
|
|
ParseEnumSpecifier(Loc, DS, TemplateInfo, AS);
|
|
else
|
|
ParseClassSpecifier(TagKind, Loc, DS, TemplateInfo, AS);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// This is almost certainly an invalid type name. Let the action emit a
|
|
// diagnostic and attempt to recover.
|
|
ParsedType T;
|
|
if (Actions.DiagnoseUnknownTypeName(*Tok.getIdentifierInfo(), Loc,
|
|
getCurScope(), SS, T)) {
|
|
// The action emitted a diagnostic, so we don't have to.
|
|
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);
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken();
|
|
|
|
// There may be other declaration specifiers after this.
|
|
return true;
|
|
}
|
|
|
|
// Fall through; the action had no suggestion for us.
|
|
} else {
|
|
// The action did not emit a diagnostic, so emit one now.
|
|
SourceRange R;
|
|
if (SS) R = SS->getRange();
|
|
Diag(Loc, diag::err_unknown_typename) << Tok.getIdentifierInfo() << R;
|
|
}
|
|
|
|
// Mark this as an error.
|
|
const char *PrevSpec;
|
|
unsigned DiagID;
|
|
DS.SetTypeSpecType(DeclSpec::TST_error, Loc, PrevSpec, DiagID);
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken();
|
|
|
|
// 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;
|
|
}
|
|
|
|
/// \brief Determine the declaration specifier context from the declarator
|
|
/// context.
|
|
///
|
|
/// \param Context the declarator context, which is one of the
|
|
/// Declarator::TheContext enumerator values.
|
|
Parser::DeclSpecContext
|
|
Parser::getDeclSpecContextFromDeclaratorContext(unsigned Context) {
|
|
if (Context == Declarator::MemberContext)
|
|
return DSC_class;
|
|
if (Context == Declarator::FileContext)
|
|
return DSC_top_level;
|
|
return 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.
|
|
///
|
|
/// [C1X] type-id
|
|
/// [C1X] 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 (getLang().CPlusPlus0x && Tok.is(tok::ellipsis))
|
|
EllipsisLoc = ConsumeToken();
|
|
|
|
return ER;
|
|
}
|
|
|
|
/// ParseAlignmentSpecifier - Parse an alignment-specifier, and add the
|
|
/// attribute to Attrs.
|
|
///
|
|
/// alignment-specifier:
|
|
/// [C1X] '_Alignas' '(' type-id ')'
|
|
/// [C1X] '_Alignas' '(' constant-expression ')'
|
|
/// [C++0x] 'alignas' '(' type-id ...[opt] ')'
|
|
/// [C++0x] 'alignas' '(' assignment-expression ...[opt] ')'
|
|
void Parser::ParseAlignmentSpecifier(ParsedAttributes &Attrs,
|
|
SourceLocation *endLoc) {
|
|
assert((Tok.is(tok::kw_alignas) || Tok.is(tok::kw__Alignas)) &&
|
|
"Not an alignment-specifier!");
|
|
|
|
SourceLocation KWLoc = Tok.getLocation();
|
|
ConsumeToken();
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.expectAndConsume(diag::err_expected_lparen))
|
|
return;
|
|
|
|
SourceLocation EllipsisLoc;
|
|
ExprResult ArgExpr = ParseAlignArgument(T.getOpenLocation(), EllipsisLoc);
|
|
if (ArgExpr.isInvalid()) {
|
|
SkipUntil(tok::r_paren);
|
|
return;
|
|
}
|
|
|
|
T.consumeClose();
|
|
if (endLoc)
|
|
*endLoc = T.getCloseLocation();
|
|
|
|
// FIXME: Handle pack-expansions here.
|
|
if (EllipsisLoc.isValid()) {
|
|
Diag(EllipsisLoc, diag::err_alignas_pack_exp_unsupported);
|
|
return;
|
|
}
|
|
|
|
ExprVector ArgExprs(Actions);
|
|
ArgExprs.push_back(ArgExpr.release());
|
|
Attrs.addNew(PP.getIdentifierInfo("aligned"), KWLoc, 0, KWLoc,
|
|
0, T.getOpenLocation(), ArgExprs.take(), 1, false, true);
|
|
}
|
|
|
|
/// ParseDeclarationSpecifiers
|
|
/// declaration-specifiers: [C99 6.7]
|
|
/// storage-class-specifier declaration-specifiers[opt]
|
|
/// type-specifier declaration-specifiers[opt]
|
|
/// [C99] function-specifier declaration-specifiers[opt]
|
|
/// [C1X] alignment-specifier declaration-specifiers[opt]
|
|
/// [GNU] attributes declaration-specifiers[opt]
|
|
/// [Clang] '__module_private__' declaration-specifiers[opt]
|
|
///
|
|
/// storage-class-specifier: [C99 6.7.1]
|
|
/// 'typedef'
|
|
/// 'extern'
|
|
/// 'static'
|
|
/// 'auto'
|
|
/// 'register'
|
|
/// [C++] 'mutable'
|
|
/// [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) {
|
|
if (DS.getSourceRange().isInvalid()) {
|
|
DS.SetRangeStart(Tok.getLocation());
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
}
|
|
|
|
bool EnteringContext = (DSContext == DSC_class || DSContext == DSC_top_level);
|
|
while (1) {
|
|
bool isInvalid = false;
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID = 0;
|
|
|
|
SourceLocation Loc = Tok.getLocation();
|
|
|
|
switch (Tok.getKind()) {
|
|
default:
|
|
DoneWithDeclSpec:
|
|
// [C++0x] decl-specifier-seq: decl-specifier attribute-specifier-seq[opt]
|
|
MaybeParseCXX0XAttributes(DS.getAttributes());
|
|
|
|
// If this is not a declaration specifier token, we're done reading decl
|
|
// specifiers. First verify that DeclSpec's are consistent.
|
|
DS.Finish(Diags, PP);
|
|
return;
|
|
|
|
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 == DSC_top_level ||
|
|
(DSContext == 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 == DSC_class? Sema::PCC_MemberTemplate
|
|
: Sema::PCC_Template;
|
|
else if (DSContext == DSC_class)
|
|
CCC = Sema::PCC_Class;
|
|
else if (ObjCImpDecl)
|
|
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(true)) {
|
|
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())
|
|
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>
|
|
|
|
// C++ [class.qual]p2:
|
|
// In a lookup in which the constructor is an acceptable lookup
|
|
// result and the nested-name-specifier nominates a class C:
|
|
//
|
|
// - if the name specified after the
|
|
// nested-name-specifier, when looked up in C, is the
|
|
// injected-class-name of C (Clause 9), or
|
|
//
|
|
// - if the name specified after the nested-name-specifier
|
|
// is the same as the identifier or the
|
|
// simple-template-id's template-name in the last
|
|
// component of the nested-name-specifier,
|
|
//
|
|
// the name is instead considered to name the constructor of
|
|
// class C.
|
|
//
|
|
// Thus, if the template-name is actually the constructor
|
|
// name, then the code is ill-formed; this interpretation is
|
|
// reinforced by the NAD status of core issue 635.
|
|
TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Next);
|
|
if ((DSContext == DSC_top_level ||
|
|
(DSContext == DSC_class && DS.isFriendSpecified())) &&
|
|
TemplateId->Name &&
|
|
Actions.isCurrentClassName(*TemplateId->Name, getCurScope(), &SS)) {
|
|
if (isConstructorDeclarator()) {
|
|
// 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;
|
|
}
|
|
|
|
// The user meant this to name a type, but it actually names
|
|
// a constructor with some extraneous template
|
|
// arguments. Complain, then parse it as a type as the user
|
|
// intended.
|
|
Diag(TemplateId->TemplateNameLoc,
|
|
diag::err_out_of_line_template_id_names_constructor)
|
|
<< TemplateId->Name;
|
|
}
|
|
|
|
DS.getTypeSpecScope() = SS;
|
|
ConsumeToken(); // The C++ scope.
|
|
assert(Tok.is(tok::annot_template_id) &&
|
|
"ParseOptionalCXXScopeSpecifier not working");
|
|
AnnotateTemplateIdTokenAsType();
|
|
continue;
|
|
}
|
|
|
|
if (Next.is(tok::annot_typename)) {
|
|
DS.getTypeSpecScope() = SS;
|
|
ConsumeToken(); // The C++ scope.
|
|
if (Tok.getAnnotationValue()) {
|
|
ParsedType T = getTypeAnnotation(Tok);
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename,
|
|
Tok.getAnnotationEndLoc(),
|
|
PrevSpec, DiagID, T);
|
|
}
|
|
else
|
|
DS.SetTypeSpecError();
|
|
DS.SetRangeEnd(Tok.getAnnotationEndLoc());
|
|
ConsumeToken(); // The typename
|
|
}
|
|
|
|
if (Next.isNot(tok::identifier))
|
|
goto DoneWithDeclSpec;
|
|
|
|
// If we're in a context where the identifier could be a class name,
|
|
// check whether this is a constructor declaration.
|
|
if ((DSContext == DSC_top_level ||
|
|
(DSContext == DSC_class && DS.isFriendSpecified())) &&
|
|
Actions.isCurrentClassName(*Next.getIdentifierInfo(), getCurScope(),
|
|
&SS)) {
|
|
if (isConstructorDeclarator())
|
|
goto DoneWithDeclSpec;
|
|
|
|
// As noted in C++ [class.qual]p2 (cited above), when the name
|
|
// of the class is qualified in a context where it could name
|
|
// a constructor, its a constructor name. However, we've
|
|
// looked at the declarator, and the user probably meant this
|
|
// to be a type. Complain that it isn't supposed to be treated
|
|
// as a type, then proceed to parse it as a type.
|
|
Diag(Next.getLocation(), diag::err_out_of_line_type_names_constructor)
|
|
<< Next.getIdentifierInfo();
|
|
}
|
|
|
|
ParsedType TypeRep = Actions.getTypeName(*Next.getIdentifierInfo(),
|
|
Next.getLocation(),
|
|
getCurScope(), &SS,
|
|
false, false, ParsedType(),
|
|
/*NonTrivialSourceInfo=*/true);
|
|
|
|
// 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 == 0) {
|
|
ConsumeToken(); // Eat the scope spec so the identifier is current.
|
|
if (ParseImplicitInt(DS, &SS, TemplateInfo, AS)) continue;
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
|
|
DS.getTypeSpecScope() = SS;
|
|
ConsumeToken(); // The C++ scope.
|
|
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
|
|
DiagID, TypeRep);
|
|
if (isInvalid)
|
|
break;
|
|
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken(); // The typename.
|
|
|
|
continue;
|
|
}
|
|
|
|
case tok::annot_typename: {
|
|
if (Tok.getAnnotationValue()) {
|
|
ParsedType T = getTypeAnnotation(Tok);
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
|
|
DiagID, T);
|
|
} else
|
|
DS.SetTypeSpecError();
|
|
|
|
if (isInvalid)
|
|
break;
|
|
|
|
DS.SetRangeEnd(Tok.getAnnotationEndLoc());
|
|
ConsumeToken(); // The typename
|
|
|
|
// Objective-C supports syntax of the form 'id<proto1,proto2>' where 'id'
|
|
// is a specific typedef and 'itf<proto1,proto2>' where 'itf' is an
|
|
// Objective-C interface.
|
|
if (Tok.is(tok::less) && getLang().ObjC1)
|
|
ParseObjCProtocolQualifiers(DS);
|
|
|
|
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) {
|
|
Tok.getIdentifierInfo()->RevertTokenIDToIdentifier();
|
|
Tok.setKind(tok::identifier);
|
|
}
|
|
|
|
// We're done with the declaration-specifiers.
|
|
goto DoneWithDeclSpec;
|
|
|
|
// typedef-name
|
|
case tok::identifier: {
|
|
// 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 (getLang().CPlusPlus) {
|
|
if (TryAnnotateCXXScopeToken(true)) {
|
|
if (!DS.hasTypeSpecifier())
|
|
DS.SetTypeSpecError();
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
if (!Tok.is(tok::identifier))
|
|
continue;
|
|
}
|
|
|
|
// 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;
|
|
|
|
// Check for need to substitute AltiVec keyword tokens.
|
|
if (TryAltiVecToken(DS, Loc, PrevSpec, DiagID, isInvalid))
|
|
break;
|
|
|
|
// It has to be available as a typedef too!
|
|
ParsedType TypeRep =
|
|
Actions.getTypeName(*Tok.getIdentifierInfo(),
|
|
Tok.getLocation(), getCurScope());
|
|
|
|
// 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) {
|
|
if (ParseImplicitInt(DS, 0, TemplateInfo, AS)) continue;
|
|
goto DoneWithDeclSpec;
|
|
}
|
|
|
|
// If we're in a context where the identifier could be a class name,
|
|
// check whether this is a constructor declaration.
|
|
if (getLang().CPlusPlus && DSContext == DSC_class &&
|
|
Actions.isCurrentClassName(*Tok.getIdentifierInfo(), getCurScope()) &&
|
|
isConstructorDeclarator())
|
|
goto DoneWithDeclSpec;
|
|
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename, Loc, PrevSpec,
|
|
DiagID, TypeRep);
|
|
if (isInvalid)
|
|
break;
|
|
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken(); // The identifier
|
|
|
|
// Objective-C supports syntax of the form 'id<proto1,proto2>' where 'id'
|
|
// is a specific typedef and 'itf<proto1,proto2>' where 'itf' is an
|
|
// Objective-C interface.
|
|
if (Tok.is(tok::less) && getLang().ObjC1)
|
|
ParseObjCProtocolQualifiers(DS);
|
|
|
|
// 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 (getLang().CPlusPlus && DSContext == DSC_class &&
|
|
Actions.isCurrentClassName(*TemplateId->Name, getCurScope()) &&
|
|
isConstructorDeclarator())
|
|
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());
|
|
continue;
|
|
|
|
// Microsoft declspec support.
|
|
case tok::kw___declspec:
|
|
ParseMicrosoftDeclSpec(DS.getAttributes());
|
|
continue;
|
|
|
|
// Microsoft single token adornments.
|
|
case tok::kw___forceinline:
|
|
// FIXME: Add handling here!
|
|
break;
|
|
|
|
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___unaligned:
|
|
ParseMicrosoftTypeAttributes(DS.getAttributes());
|
|
continue;
|
|
|
|
// Borland single token adornments.
|
|
case tok::kw___pascal:
|
|
ParseBorlandTypeAttributes(DS.getAttributes());
|
|
continue;
|
|
|
|
// OpenCL single token adornments.
|
|
case tok::kw___kernel:
|
|
ParseOpenCLAttributes(DS.getAttributes());
|
|
continue;
|
|
|
|
// storage-class-specifier
|
|
case tok::kw_typedef:
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_typedef, Loc,
|
|
PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_extern:
|
|
if (DS.isThreadSpecified())
|
|
Diag(Tok, diag::ext_thread_before) << "extern";
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_extern, Loc,
|
|
PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw___private_extern__:
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_private_extern,
|
|
Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_static:
|
|
if (DS.isThreadSpecified())
|
|
Diag(Tok, diag::ext_thread_before) << "static";
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_static, Loc,
|
|
PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_auto:
|
|
if (getLang().CPlusPlus0x) {
|
|
if (isKnownToBeTypeSpecifier(GetLookAheadToken(1))) {
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_auto, Loc,
|
|
PrevSpec, DiagID);
|
|
if (!isInvalid)
|
|
Diag(Tok, diag::ext_auto_storage_class)
|
|
<< FixItHint::CreateRemoval(DS.getStorageClassSpecLoc());
|
|
} else
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto, Loc, PrevSpec,
|
|
DiagID);
|
|
} else
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_auto, Loc,
|
|
PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_register:
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_register, Loc,
|
|
PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_mutable:
|
|
isInvalid = DS.SetStorageClassSpec(Actions, DeclSpec::SCS_mutable, Loc,
|
|
PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw___thread:
|
|
isInvalid = DS.SetStorageClassSpecThread(Loc, PrevSpec, DiagID);
|
|
break;
|
|
|
|
// function-specifier
|
|
case tok::kw_inline:
|
|
isInvalid = DS.SetFunctionSpecInline(Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_virtual:
|
|
isInvalid = DS.SetFunctionSpecVirtual(Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_explicit:
|
|
isInvalid = DS.SetFunctionSpecExplicit(Loc, PrevSpec, DiagID);
|
|
break;
|
|
|
|
// alignment-specifier
|
|
case tok::kw__Alignas:
|
|
if (!getLang().C1X)
|
|
Diag(Tok, diag::ext_c1x_alignas);
|
|
ParseAlignmentSpecifier(DS.getAttributes());
|
|
continue;
|
|
|
|
// friend
|
|
case tok::kw_friend:
|
|
if (DSContext == 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);
|
|
break;
|
|
case tok::kw_long:
|
|
if (DS.getTypeSpecWidth() != DeclSpec::TSW_long)
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_long, Loc, PrevSpec,
|
|
DiagID);
|
|
else
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw___int64:
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
|
|
DiagID);
|
|
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);
|
|
break;
|
|
case tok::kw_char:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw_int:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw_half:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_half, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw_float:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw_double:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_double, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw_wchar_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_wchar, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw_char16_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char16, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw_char32_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char32, Loc, PrevSpec,
|
|
DiagID);
|
|
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);
|
|
}
|
|
break;
|
|
case tok::kw__Decimal32:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal32, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw__Decimal64:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal64, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw__Decimal128:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal128, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw___vector:
|
|
isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw___pixel:
|
|
isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw___unknown_anytype:
|
|
isInvalid = DS.SetTypeSpecType(TST_unknown_anytype, Loc,
|
|
PrevSpec, DiagID);
|
|
break;
|
|
|
|
// class-specifier:
|
|
case tok::kw_class:
|
|
case tok::kw_struct:
|
|
case tok::kw_union: {
|
|
tok::TokenKind Kind = Tok.getKind();
|
|
ConsumeToken();
|
|
ParseClassSpecifier(Kind, Loc, DS, TemplateInfo, AS, EnteringContext);
|
|
continue;
|
|
}
|
|
|
|
// enum-specifier:
|
|
case tok::kw_enum:
|
|
ConsumeToken();
|
|
ParseEnumSpecifier(Loc, DS, TemplateInfo, AS);
|
|
continue;
|
|
|
|
// cv-qualifier:
|
|
case tok::kw_const:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_const, Loc, PrevSpec, DiagID,
|
|
getLang());
|
|
break;
|
|
case tok::kw_volatile:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
|
|
getLang());
|
|
break;
|
|
case tok::kw_restrict:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
|
|
getLang());
|
|
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::kw_decltype:
|
|
ParseDecltypeSpecifier(DS);
|
|
continue;
|
|
|
|
case tok::kw___underlying_type:
|
|
ParseUnderlyingTypeSpecifier(DS);
|
|
continue;
|
|
|
|
case tok::kw__Atomic:
|
|
ParseAtomicSpecifier(DS);
|
|
continue;
|
|
|
|
// OpenCL qualifiers:
|
|
case tok::kw_private:
|
|
if (!getLang().OpenCL)
|
|
goto DoneWithDeclSpec;
|
|
case tok::kw___private:
|
|
case tok::kw___global:
|
|
case tok::kw___local:
|
|
case tok::kw___constant:
|
|
case tok::kw___read_only:
|
|
case tok::kw___write_only:
|
|
case tok::kw___read_write:
|
|
ParseOpenCLQualifiers(DS);
|
|
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() || !getLang().ObjC1)
|
|
goto DoneWithDeclSpec;
|
|
|
|
if (!ParseObjCProtocolQualifiers(DS))
|
|
Diag(Loc, diag::warn_objc_protocol_qualifier_missing_id)
|
|
<< FixItHint::CreateInsertion(Loc, "id")
|
|
<< SourceRange(Loc, DS.getSourceRange().getEnd());
|
|
|
|
// 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)
|
|
Diag(Tok, DiagID)
|
|
<< PrevSpec << FixItHint::CreateRemoval(Tok.getLocation());
|
|
else
|
|
Diag(Tok, DiagID) << PrevSpec;
|
|
}
|
|
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
if (DiagID != diag::err_bool_redeclaration)
|
|
ConsumeToken();
|
|
}
|
|
}
|
|
|
|
/// ParseOptionalTypeSpecifier - Try to parse a single type-specifier. We
|
|
/// primarily follow the C++ grammar with additions for C99 and GNU,
|
|
/// which together subsume the C grammar. Note that the C++
|
|
/// type-specifier also includes the C type-qualifier (for const,
|
|
/// volatile, and C99 restrict). Returns true if a type-specifier was
|
|
/// found (and parsed), false otherwise.
|
|
///
|
|
/// type-specifier: [C++ 7.1.5]
|
|
/// simple-type-specifier
|
|
/// class-specifier
|
|
/// enum-specifier
|
|
/// elaborated-type-specifier [TODO]
|
|
/// cv-qualifier
|
|
///
|
|
/// cv-qualifier: [C++ 7.1.5.1]
|
|
/// 'const'
|
|
/// 'volatile'
|
|
/// [C99] 'restrict'
|
|
///
|
|
/// simple-type-specifier: [ C++ 7.1.5.2]
|
|
/// '::'[opt] nested-name-specifier[opt] type-name [TODO]
|
|
/// '::'[opt] nested-name-specifier 'template' template-id [TODO]
|
|
/// 'char'
|
|
/// 'wchar_t'
|
|
/// 'bool'
|
|
/// 'short'
|
|
/// 'int'
|
|
/// 'long'
|
|
/// 'signed'
|
|
/// 'unsigned'
|
|
/// 'float'
|
|
/// 'double'
|
|
/// 'void'
|
|
/// [C99] '_Bool'
|
|
/// [C99] '_Complex'
|
|
/// [C99] '_Imaginary' // Removed in TC2?
|
|
/// [GNU] '_Decimal32'
|
|
/// [GNU] '_Decimal64'
|
|
/// [GNU] '_Decimal128'
|
|
/// [GNU] typeof-specifier
|
|
/// [OBJC] class-name objc-protocol-refs[opt] [TODO]
|
|
/// [OBJC] typedef-name objc-protocol-refs[opt] [TODO]
|
|
/// [C++0x] 'decltype' ( expression )
|
|
/// [AltiVec] '__vector'
|
|
bool Parser::ParseOptionalTypeSpecifier(DeclSpec &DS, bool& isInvalid,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID,
|
|
const ParsedTemplateInfo &TemplateInfo,
|
|
bool SuppressDeclarations) {
|
|
SourceLocation Loc = Tok.getLocation();
|
|
|
|
switch (Tok.getKind()) {
|
|
case tok::identifier: // foo::bar
|
|
// If we already have a type specifier, this identifier is not a type.
|
|
if (DS.getTypeSpecType() != DeclSpec::TST_unspecified ||
|
|
DS.getTypeSpecWidth() != DeclSpec::TSW_unspecified ||
|
|
DS.getTypeSpecSign() != DeclSpec::TSS_unspecified)
|
|
return false;
|
|
// Check for need to substitute AltiVec keyword tokens.
|
|
if (TryAltiVecToken(DS, Loc, PrevSpec, DiagID, isInvalid))
|
|
break;
|
|
// Fall through.
|
|
case tok::kw_typename: // typename foo::bar
|
|
// Annotate typenames and C++ scope specifiers. If we get one, just
|
|
// recurse to handle whatever we get.
|
|
if (TryAnnotateTypeOrScopeToken(/*EnteringContext=*/false,
|
|
/*NeedType=*/true))
|
|
return true;
|
|
if (Tok.is(tok::identifier))
|
|
return false;
|
|
return ParseOptionalTypeSpecifier(DS, isInvalid, PrevSpec, DiagID,
|
|
TemplateInfo, SuppressDeclarations);
|
|
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(/*EnteringContext=*/false,
|
|
/*NeedType=*/true))
|
|
return true;
|
|
return ParseOptionalTypeSpecifier(DS, isInvalid, PrevSpec, DiagID,
|
|
TemplateInfo, SuppressDeclarations);
|
|
|
|
// simple-type-specifier:
|
|
case tok::annot_typename: {
|
|
if (ParsedType T = getTypeAnnotation(Tok)) {
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_typename,
|
|
Tok.getAnnotationEndLoc(), PrevSpec,
|
|
DiagID, T);
|
|
} else
|
|
DS.SetTypeSpecError();
|
|
DS.SetRangeEnd(Tok.getAnnotationEndLoc());
|
|
ConsumeToken(); // The typename
|
|
|
|
// Objective-C supports syntax of the form 'id<proto1,proto2>' where 'id'
|
|
// is a specific typedef and 'itf<proto1,proto2>' where 'itf' is an
|
|
// Objective-C interface. If we don't have Objective-C or a '<', this is
|
|
// just a normal reference to a typedef name.
|
|
if (Tok.is(tok::less) && getLang().ObjC1)
|
|
ParseObjCProtocolQualifiers(DS);
|
|
|
|
return true;
|
|
}
|
|
|
|
case tok::kw_short:
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_short, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_long:
|
|
if (DS.getTypeSpecWidth() != DeclSpec::TSW_long)
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_long, Loc, PrevSpec,
|
|
DiagID);
|
|
else
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw___int64:
|
|
isInvalid = DS.SetTypeSpecWidth(DeclSpec::TSW_longlong, Loc, PrevSpec,
|
|
DiagID);
|
|
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);
|
|
break;
|
|
case tok::kw_char:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_int:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_int, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_half:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_half, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_float:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_float, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_double:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_double, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_wchar_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_wchar, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_char16_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char16, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_char32_t:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_char32, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw_bool:
|
|
case tok::kw__Bool:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_bool, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw__Decimal32:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal32, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw__Decimal64:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal64, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw__Decimal128:
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_decimal128, Loc, PrevSpec,
|
|
DiagID);
|
|
break;
|
|
case tok::kw___vector:
|
|
isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID);
|
|
break;
|
|
case tok::kw___pixel:
|
|
isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID);
|
|
break;
|
|
|
|
// class-specifier:
|
|
case tok::kw_class:
|
|
case tok::kw_struct:
|
|
case tok::kw_union: {
|
|
tok::TokenKind Kind = Tok.getKind();
|
|
ConsumeToken();
|
|
ParseClassSpecifier(Kind, Loc, DS, TemplateInfo, AS_none,
|
|
/*EnteringContext=*/false,
|
|
SuppressDeclarations);
|
|
return true;
|
|
}
|
|
|
|
// enum-specifier:
|
|
case tok::kw_enum:
|
|
ConsumeToken();
|
|
ParseEnumSpecifier(Loc, DS, TemplateInfo, AS_none);
|
|
return true;
|
|
|
|
// cv-qualifier:
|
|
case tok::kw_const:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_const , Loc, PrevSpec,
|
|
DiagID, getLang());
|
|
break;
|
|
case tok::kw_volatile:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec,
|
|
DiagID, getLang());
|
|
break;
|
|
case tok::kw_restrict:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec,
|
|
DiagID, getLang());
|
|
break;
|
|
|
|
// GNU typeof support.
|
|
case tok::kw_typeof:
|
|
ParseTypeofSpecifier(DS);
|
|
return true;
|
|
|
|
// C++0x decltype support.
|
|
case tok::kw_decltype:
|
|
ParseDecltypeSpecifier(DS);
|
|
return true;
|
|
|
|
// C++0x type traits support.
|
|
case tok::kw___underlying_type:
|
|
ParseUnderlyingTypeSpecifier(DS);
|
|
return true;
|
|
|
|
case tok::kw__Atomic:
|
|
ParseAtomicSpecifier(DS);
|
|
return true;
|
|
|
|
// OpenCL qualifiers:
|
|
case tok::kw_private:
|
|
if (!getLang().OpenCL)
|
|
return false;
|
|
case tok::kw___private:
|
|
case tok::kw___global:
|
|
case tok::kw___local:
|
|
case tok::kw___constant:
|
|
case tok::kw___read_only:
|
|
case tok::kw___write_only:
|
|
case tok::kw___read_write:
|
|
ParseOpenCLQualifiers(DS);
|
|
break;
|
|
|
|
// C++0x auto support.
|
|
case tok::kw_auto:
|
|
// This is only called in situations where a storage-class specifier is
|
|
// illegal, so we can assume an auto type specifier was intended even in
|
|
// C++98. In C++98 mode, DeclSpec::Finish will produce an appropriate
|
|
// extension diagnostic.
|
|
if (!getLang().CPlusPlus)
|
|
return false;
|
|
|
|
isInvalid = DS.SetTypeSpecType(DeclSpec::TST_auto, Loc, PrevSpec, DiagID);
|
|
break;
|
|
|
|
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___unaligned:
|
|
ParseMicrosoftTypeAttributes(DS.getAttributes());
|
|
return true;
|
|
|
|
case tok::kw___pascal:
|
|
ParseBorlandTypeAttributes(DS.getAttributes());
|
|
return true;
|
|
|
|
default:
|
|
// Not a type-specifier; do nothing.
|
|
return false;
|
|
}
|
|
|
|
// If the specifier combination wasn't legal, issue a diagnostic.
|
|
if (isInvalid) {
|
|
assert(PrevSpec && "Method did not return previous specifier!");
|
|
// Pick between error or extwarn.
|
|
Diag(Tok, DiagID) << PrevSpec;
|
|
}
|
|
DS.SetRangeEnd(Tok.getLocation());
|
|
ConsumeToken(); // whatever we parsed above.
|
|
return true;
|
|
}
|
|
|
|
/// ParseStructDeclaration - Parse a struct declaration without the terminating
|
|
/// semicolon.
|
|
///
|
|
/// struct-declaration:
|
|
/// 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(DeclSpec &DS, FieldCallback &Fields) {
|
|
|
|
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, Fields);
|
|
}
|
|
|
|
// 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)) {
|
|
Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS_none, DS);
|
|
return;
|
|
}
|
|
|
|
// Read struct-declarators until we find the semicolon.
|
|
bool FirstDeclarator = true;
|
|
while (1) {
|
|
ParsingDeclRAIIObject PD(*this);
|
|
FieldDeclarator DeclaratorInfo(DS);
|
|
|
|
// 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);
|
|
}
|
|
|
|
if (Tok.is(tok::colon)) {
|
|
ConsumeToken();
|
|
ExprResult Res(ParseConstantExpression());
|
|
if (Res.isInvalid())
|
|
SkipUntil(tok::semi, true, true);
|
|
else
|
|
DeclaratorInfo.BitfieldSize = Res.release();
|
|
}
|
|
|
|
// If attributes exist after the declarator, parse them.
|
|
MaybeParseGNUAttributes(DeclaratorInfo.D);
|
|
|
|
// We're done with this declarator; invoke the callback.
|
|
Decl *D = Fields.invoke(DeclaratorInfo);
|
|
PD.complete(D);
|
|
|
|
// If we don't have a comma, it is either the end of the list (a ';')
|
|
// or an error, bail out.
|
|
if (Tok.isNot(tok::comma))
|
|
return;
|
|
|
|
// Consume the comma.
|
|
ConsumeToken();
|
|
|
|
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, TagDecl, RecordLoc,
|
|
"parsing struct/union body");
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_brace);
|
|
if (T.consumeOpen())
|
|
return;
|
|
|
|
ParseScope StructScope(this, Scope::ClassScope|Scope::DeclScope);
|
|
Actions.ActOnTagStartDefinition(getCurScope(), TagDecl);
|
|
|
|
// Empty structs are an extension in C (C99 6.7.2.1p7), but are allowed in
|
|
// C++.
|
|
if (Tok.is(tok::r_brace) && !getLang().CPlusPlus)
|
|
Diag(Tok, diag::ext_empty_struct_union)
|
|
<< (TagType == TST_union);
|
|
|
|
SmallVector<Decl *, 32> FieldDecls;
|
|
|
|
// While we still have something to read, read the declarations in the struct.
|
|
while (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)) {
|
|
Diag(Tok, diag::ext_extra_struct_semi)
|
|
<< DeclSpec::getSpecifierName((DeclSpec::TST)TagType)
|
|
<< FixItHint::CreateRemoval(Tok.getLocation());
|
|
ConsumeToken();
|
|
continue;
|
|
}
|
|
|
|
// Parse all the comma separated declarators.
|
|
DeclSpec DS(AttrFactory);
|
|
|
|
if (!Tok.is(tok::at)) {
|
|
struct CFieldCallback : FieldCallback {
|
|
Parser &P;
|
|
Decl *TagDecl;
|
|
SmallVectorImpl<Decl *> &FieldDecls;
|
|
|
|
CFieldCallback(Parser &P, Decl *TagDecl,
|
|
SmallVectorImpl<Decl *> &FieldDecls) :
|
|
P(P), TagDecl(TagDecl), FieldDecls(FieldDecls) {}
|
|
|
|
virtual Decl *invoke(FieldDeclarator &FD) {
|
|
// Install the declarator into the current TagDecl.
|
|
Decl *Field = P.Actions.ActOnField(P.getCurScope(), TagDecl,
|
|
FD.D.getDeclSpec().getSourceRange().getBegin(),
|
|
FD.D, FD.BitfieldSize);
|
|
FieldDecls.push_back(Field);
|
|
return Field;
|
|
}
|
|
} Callback(*this, TagDecl, FieldDecls);
|
|
|
|
ParseStructDeclaration(DS, Callback);
|
|
} else { // Handle @defs
|
|
ConsumeToken();
|
|
if (!Tok.isObjCAtKeyword(tok::objc_defs)) {
|
|
Diag(Tok, diag::err_unexpected_at);
|
|
SkipUntil(tok::semi, true);
|
|
continue;
|
|
}
|
|
ConsumeToken();
|
|
ExpectAndConsume(tok::l_paren, diag::err_expected_lparen);
|
|
if (!Tok.is(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
SkipUntil(tok::semi, true);
|
|
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, diag::err_expected_rparen);
|
|
}
|
|
|
|
if (Tok.is(tok::semi)) {
|
|
ConsumeToken();
|
|
} else if (Tok.is(tok::r_brace)) {
|
|
ExpectAndConsume(tok::semi, diag::ext_expected_semi_decl_list);
|
|
break;
|
|
} else {
|
|
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, true, true);
|
|
// If we stopped at a ';', eat it.
|
|
if (Tok.is(tok::semi)) ConsumeToken();
|
|
}
|
|
}
|
|
|
|
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.getList());
|
|
StructScope.Exit();
|
|
Actions.ActOnTagFinishDefinition(getCurScope(), TagDecl,
|
|
T.getCloseLocation());
|
|
}
|
|
|
|
/// 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]
|
|
/// 'enum' identifier
|
|
/// [GNU] 'enum' attributes[opt] identifier
|
|
///
|
|
/// [C++0x] enum-head '{' enumerator-list[opt] '}'
|
|
/// [C++0x] enum-head '{' enumerator-list ',' '}'
|
|
///
|
|
/// enum-head: [C++0x]
|
|
/// enum-key attributes[opt] identifier[opt] enum-base[opt]
|
|
/// enum-key attributes[opt] nested-name-specifier identifier enum-base[opt]
|
|
///
|
|
/// enum-key: [C++0x]
|
|
/// 'enum'
|
|
/// 'enum' 'class'
|
|
/// 'enum' 'struct'
|
|
///
|
|
/// enum-base: [C++0x]
|
|
/// ':' 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) {
|
|
// 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();
|
|
}
|
|
|
|
bool IsScopedEnum = false;
|
|
bool IsScopedUsingClassTag = false;
|
|
|
|
if (getLang().CPlusPlus0x &&
|
|
(Tok.is(tok::kw_class) || Tok.is(tok::kw_struct))) {
|
|
Diag(Tok, diag::warn_cxx98_compat_scoped_enum);
|
|
IsScopedEnum = true;
|
|
IsScopedUsingClassTag = Tok.is(tok::kw_class);
|
|
ConsumeToken();
|
|
}
|
|
|
|
// If attributes exist after tag, parse them.
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseGNUAttributes(attrs);
|
|
|
|
bool AllowFixedUnderlyingType
|
|
= getLang().CPlusPlus0x || getLang().MicrosoftExt || getLang().ObjC2;
|
|
|
|
CXXScopeSpec &SS = DS.getTypeSpecScope();
|
|
if (getLang().CPlusPlus) {
|
|
// "enum foo : bar;" is not a potential typo for "enum foo::bar;"
|
|
// if a fixed underlying type is allowed.
|
|
ColonProtectionRAIIObject X(*this, AllowFixedUnderlyingType);
|
|
|
|
if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(),
|
|
/*EnteringContext=*/false))
|
|
return;
|
|
|
|
if (SS.isSet() && Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
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, true);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Must have either 'enum name' or 'enum {...}'.
|
|
if (Tok.isNot(tok::identifier) && Tok.isNot(tok::l_brace) &&
|
|
(AllowFixedUnderlyingType && Tok.isNot(tok::colon))) {
|
|
Diag(Tok, diag::err_expected_ident_lbrace);
|
|
|
|
// Skip the rest of this declarator, up until the comma or semicolon.
|
|
SkipUntil(tok::comma, true);
|
|
return;
|
|
}
|
|
|
|
// If an identifier is present, consume and remember it.
|
|
IdentifierInfo *Name = 0;
|
|
SourceLocation NameLoc;
|
|
if (Tok.is(tok::identifier)) {
|
|
Name = Tok.getIdentifierInfo();
|
|
NameLoc = ConsumeToken();
|
|
}
|
|
|
|
if (!Name && IsScopedEnum) {
|
|
// 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);
|
|
IsScopedEnum = false;
|
|
IsScopedUsingClassTag = false;
|
|
}
|
|
|
|
TypeResult BaseType;
|
|
|
|
// Parse the fixed underlying type.
|
|
if (AllowFixedUnderlyingType && Tok.is(tok::colon)) {
|
|
bool PossibleBitfield = false;
|
|
if (getCurScope()->getFlags() & Scope::ClassScope) {
|
|
// 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.
|
|
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 ((getLang().CPlusPlus &&
|
|
isCXXDeclarationSpecifier() != TPResult::True()) ||
|
|
(!getLang().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 (!getLang().CPlusPlus0x && !getLang().ObjC2)
|
|
Diag(StartLoc, diag::ext_ms_enum_fixed_underlying_type)
|
|
<< Range;
|
|
if (getLang().CPlusPlus0x)
|
|
Diag(StartLoc, diag::warn_cxx98_compat_enum_fixed_underlying_type);
|
|
}
|
|
}
|
|
|
|
// There are three options here. 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 (Tok.is(tok::l_brace))
|
|
TUK = Sema::TUK_Definition;
|
|
else if (Tok.is(tok::semi))
|
|
TUK = Sema::TUK_Declaration;
|
|
else
|
|
TUK = Sema::TUK_Reference;
|
|
|
|
// enums cannot be templates, although they can be referenced from a
|
|
// template.
|
|
if (TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate &&
|
|
TUK != Sema::TUK_Reference) {
|
|
Diag(Tok, diag::err_enum_template);
|
|
|
|
// Skip the rest of this declarator, up until the comma or semicolon.
|
|
SkipUntil(tok::comma, true);
|
|
return;
|
|
}
|
|
|
|
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, true);
|
|
return;
|
|
}
|
|
|
|
bool Owned = false;
|
|
bool IsDependent = false;
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID;
|
|
Decl *TagDecl = Actions.ActOnTag(getCurScope(), DeclSpec::TST_enum, TUK,
|
|
StartLoc, SS, Name, NameLoc, attrs.getList(),
|
|
AS, DS.getModulePrivateSpecLoc(),
|
|
MultiTemplateParamsArg(Actions),
|
|
Owned, IsDependent, IsScopedEnum,
|
|
IsScopedUsingClassTag, BaseType);
|
|
|
|
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()))
|
|
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)) {
|
|
ConsumeBrace();
|
|
SkipUntil(tok::r_brace);
|
|
}
|
|
|
|
DS.SetTypeSpecError();
|
|
return;
|
|
}
|
|
|
|
if (Tok.is(tok::l_brace))
|
|
ParseEnumBody(StartLoc, TagDecl);
|
|
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_enum, StartLoc,
|
|
NameLoc.isValid() ? NameLoc : StartLoc,
|
|
PrevSpec, DiagID, TagDecl, Owned))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
}
|
|
|
|
/// ParseEnumBody - Parse a {} enclosed enumerator-list.
|
|
/// enumerator-list:
|
|
/// enumerator
|
|
/// enumerator-list ',' enumerator
|
|
/// enumerator:
|
|
/// enumeration-constant
|
|
/// enumeration-constant '=' 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);
|
|
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) && !getLang().CPlusPlus)
|
|
Diag(Tok, diag::error_empty_enum);
|
|
|
|
SmallVector<Decl *, 32> EnumConstantDecls;
|
|
|
|
Decl *LastEnumConstDecl = 0;
|
|
|
|
// Parse the enumerator-list.
|
|
while (Tok.is(tok::identifier)) {
|
|
IdentifierInfo *Ident = Tok.getIdentifierInfo();
|
|
SourceLocation IdentLoc = ConsumeToken();
|
|
|
|
// If attributes exist after the enumerator, parse them.
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseGNUAttributes(attrs);
|
|
|
|
SourceLocation EqualLoc;
|
|
ExprResult AssignedVal;
|
|
if (Tok.is(tok::equal)) {
|
|
EqualLoc = ConsumeToken();
|
|
AssignedVal = ParseConstantExpression();
|
|
if (AssignedVal.isInvalid())
|
|
SkipUntil(tok::comma, tok::r_brace, true, true);
|
|
}
|
|
|
|
// Install the enumerator constant into EnumDecl.
|
|
Decl *EnumConstDecl = Actions.ActOnEnumConstant(getCurScope(), EnumDecl,
|
|
LastEnumConstDecl,
|
|
IdentLoc, Ident,
|
|
attrs.getList(), EqualLoc,
|
|
AssignedVal.release());
|
|
EnumConstantDecls.push_back(EnumConstDecl);
|
|
LastEnumConstDecl = EnumConstDecl;
|
|
|
|
if (Tok.is(tok::identifier)) {
|
|
// We're missing a comma between enumerators.
|
|
SourceLocation Loc = PP.getLocForEndOfToken(PrevTokLocation);
|
|
Diag(Loc, diag::err_enumerator_list_missing_comma)
|
|
<< FixItHint::CreateInsertion(Loc, ", ");
|
|
continue;
|
|
}
|
|
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
SourceLocation CommaLoc = ConsumeToken();
|
|
|
|
if (Tok.isNot(tok::identifier)) {
|
|
if (!getLang().C99 && !getLang().CPlusPlus0x)
|
|
Diag(CommaLoc, diag::ext_enumerator_list_comma)
|
|
<< getLang().CPlusPlus
|
|
<< FixItHint::CreateRemoval(CommaLoc);
|
|
else if (getLang().CPlusPlus0x)
|
|
Diag(CommaLoc, diag::warn_cxx98_compat_enumerator_list_comma)
|
|
<< FixItHint::CreateRemoval(CommaLoc);
|
|
}
|
|
}
|
|
|
|
// Eat the }.
|
|
T.consumeClose();
|
|
|
|
// If attributes exist after the identifier list, parse them.
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseGNUAttributes(attrs);
|
|
|
|
Actions.ActOnEnumBody(StartLoc, T.getOpenLocation(), T.getCloseLocation(),
|
|
EnumDecl, EnumConstantDecls.data(),
|
|
EnumConstantDecls.size(), getCurScope(),
|
|
attrs.getList());
|
|
|
|
EnumScope.Exit();
|
|
Actions.ActOnTagFinishDefinition(getCurScope(), EnumDecl,
|
|
T.getCloseLocation());
|
|
}
|
|
|
|
/// isTypeSpecifierQualifier - Return true if the current token could be the
|
|
/// start of a type-qualifier-list.
|
|
bool Parser::isTypeQualifier() const {
|
|
switch (Tok.getKind()) {
|
|
default: return false;
|
|
|
|
// type-qualifier only in OpenCL
|
|
case tok::kw_private:
|
|
return getLang().OpenCL;
|
|
|
|
// type-qualifier
|
|
case tok::kw_const:
|
|
case tok::kw_volatile:
|
|
case tok::kw_restrict:
|
|
case tok::kw___private:
|
|
case tok::kw___local:
|
|
case tok::kw___global:
|
|
case tok::kw___constant:
|
|
case tok::kw___read_only:
|
|
case tok::kw___read_write:
|
|
case tok::kw___write_only:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/// 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_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_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_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:
|
|
// 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;
|
|
// Fall through.
|
|
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_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_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_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:
|
|
// enum-specifier
|
|
case tok::kw_enum:
|
|
|
|
// type-qualifier
|
|
case tok::kw_const:
|
|
case tok::kw_volatile:
|
|
case tok::kw_restrict:
|
|
|
|
// typedef-name
|
|
case tok::annot_typename:
|
|
return true;
|
|
|
|
// GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'.
|
|
case tok::less:
|
|
return getLang().ObjC1;
|
|
|
|
case tok::kw___cdecl:
|
|
case tok::kw___stdcall:
|
|
case tok::kw___fastcall:
|
|
case tok::kw___thiscall:
|
|
case tok::kw___w64:
|
|
case tok::kw___ptr64:
|
|
case tok::kw___ptr32:
|
|
case tok::kw___pascal:
|
|
case tok::kw___unaligned:
|
|
|
|
case tok::kw___private:
|
|
case tok::kw___local:
|
|
case tok::kw___global:
|
|
case tok::kw___constant:
|
|
case tok::kw___read_only:
|
|
case tok::kw___read_write:
|
|
case tok::kw___write_only:
|
|
|
|
return true;
|
|
|
|
case tok::kw_private:
|
|
return getLang().OpenCL;
|
|
|
|
// C1x _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_private:
|
|
return getLang().OpenCL;
|
|
|
|
case tok::identifier: // foo::bar
|
|
// Unfortunate hack to support "Class.factoryMethod" notation.
|
|
if (getLang().ObjC1 && NextToken().is(tok::period))
|
|
return false;
|
|
if (TryAltiVecVectorToken())
|
|
return true;
|
|
// Fall through.
|
|
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_register:
|
|
case tok::kw___thread:
|
|
|
|
// Modules
|
|
case tok::kw___module_private__:
|
|
|
|
// type-specifiers
|
|
case tok::kw_short:
|
|
case tok::kw_long:
|
|
case tok::kw___int64:
|
|
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_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_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:
|
|
// enum-specifier
|
|
case tok::kw_enum:
|
|
|
|
// type-qualifier
|
|
case tok::kw_const:
|
|
case tok::kw_volatile:
|
|
case tok::kw_restrict:
|
|
|
|
// function-specifier
|
|
case tok::kw_inline:
|
|
case tok::kw_virtual:
|
|
case tok::kw_explicit:
|
|
|
|
// static_assert-declaration
|
|
case tok::kw__Static_assert:
|
|
|
|
// GNU typeof support.
|
|
case tok::kw_typeof:
|
|
|
|
// GNU attributes.
|
|
case tok::kw___attribute:
|
|
return true;
|
|
|
|
// C++0x decltype.
|
|
case tok::kw_decltype:
|
|
return true;
|
|
|
|
// C1x _Atomic()
|
|
case tok::kw__Atomic:
|
|
return true;
|
|
|
|
// GNU ObjC bizarre protocol extension: <proto1,proto2> with implicit 'id'.
|
|
case tok::less:
|
|
return getLang().ObjC1;
|
|
|
|
// 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___w64:
|
|
case tok::kw___ptr64:
|
|
case tok::kw___ptr32:
|
|
case tok::kw___forceinline:
|
|
case tok::kw___pascal:
|
|
case tok::kw___unaligned:
|
|
|
|
case tok::kw___private:
|
|
case tok::kw___local:
|
|
case tok::kw___global:
|
|
case tok::kw___constant:
|
|
case tok::kw___read_only:
|
|
case tok::kw___read_write:
|
|
case tok::kw___write_only:
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
bool Parser::isConstructorDeclarator() {
|
|
TentativeParsingAction TPA(*this);
|
|
|
|
// Parse the C++ scope specifier.
|
|
CXXScopeSpec SS;
|
|
if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(),
|
|
/*EnteringContext=*/true)) {
|
|
TPA.Revert();
|
|
return false;
|
|
}
|
|
|
|
// Parse the constructor name.
|
|
if (Tok.is(tok::identifier) || Tok.is(tok::annot_template_id)) {
|
|
// We already know that we have a constructor name; just consume
|
|
// the token.
|
|
ConsumeToken();
|
|
} else {
|
|
TPA.Revert();
|
|
return false;
|
|
}
|
|
|
|
// Current class name must be followed by a left parentheses.
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
TPA.Revert();
|
|
return false;
|
|
}
|
|
ConsumeParen();
|
|
|
|
// A right parentheses or ellipsis signals that we have a constructor.
|
|
if (Tok.is(tok::r_paren) || Tok.is(tok::ellipsis)) {
|
|
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 = isDeclarationSpecifier();
|
|
TPA.Revert();
|
|
return IsConstructor;
|
|
}
|
|
|
|
/// ParseTypeQualifierListOpt
|
|
/// type-qualifier-list: [C99 6.7.5]
|
|
/// type-qualifier
|
|
/// [vendor] attributes
|
|
/// [ only if VendorAttributesAllowed=true ]
|
|
/// type-qualifier-list type-qualifier
|
|
/// [vendor] type-qualifier-list attributes
|
|
/// [ only if VendorAttributesAllowed=true ]
|
|
/// [C++0x] attribute-specifier[opt] is allowed before cv-qualifier-seq
|
|
/// [ only if CXX0XAttributesAllowed=true ]
|
|
/// Note: vendor can be GNU, MS, etc.
|
|
///
|
|
void Parser::ParseTypeQualifierListOpt(DeclSpec &DS,
|
|
bool VendorAttributesAllowed,
|
|
bool CXX0XAttributesAllowed) {
|
|
if (getLang().CPlusPlus0x && isCXX0XAttributeSpecifier()) {
|
|
SourceLocation Loc = Tok.getLocation();
|
|
ParsedAttributesWithRange attrs(AttrFactory);
|
|
ParseCXX0XAttributes(attrs);
|
|
if (CXX0XAttributesAllowed)
|
|
DS.takeAttributesFrom(attrs);
|
|
else
|
|
Diag(Loc, diag::err_attributes_not_allowed);
|
|
}
|
|
|
|
SourceLocation EndLoc;
|
|
|
|
while (1) {
|
|
bool isInvalid = false;
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID = 0;
|
|
SourceLocation Loc = Tok.getLocation();
|
|
|
|
switch (Tok.getKind()) {
|
|
case tok::code_completion:
|
|
Actions.CodeCompleteTypeQualifiers(DS);
|
|
return cutOffParsing();
|
|
|
|
case tok::kw_const:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_const , Loc, PrevSpec, DiagID,
|
|
getLang());
|
|
break;
|
|
case tok::kw_volatile:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_volatile, Loc, PrevSpec, DiagID,
|
|
getLang());
|
|
break;
|
|
case tok::kw_restrict:
|
|
isInvalid = DS.SetTypeQual(DeclSpec::TQ_restrict, Loc, PrevSpec, DiagID,
|
|
getLang());
|
|
break;
|
|
|
|
// OpenCL qualifiers:
|
|
case tok::kw_private:
|
|
if (!getLang().OpenCL)
|
|
goto DoneWithTypeQuals;
|
|
case tok::kw___private:
|
|
case tok::kw___global:
|
|
case tok::kw___local:
|
|
case tok::kw___constant:
|
|
case tok::kw___read_only:
|
|
case tok::kw___write_only:
|
|
case tok::kw___read_write:
|
|
ParseOpenCLQualifiers(DS);
|
|
break;
|
|
|
|
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___unaligned:
|
|
if (VendorAttributesAllowed) {
|
|
ParseMicrosoftTypeAttributes(DS.getAttributes());
|
|
continue;
|
|
}
|
|
goto DoneWithTypeQuals;
|
|
case tok::kw___pascal:
|
|
if (VendorAttributesAllowed) {
|
|
ParseBorlandTypeAttributes(DS.getAttributes());
|
|
continue;
|
|
}
|
|
goto DoneWithTypeQuals;
|
|
case tok::kw___attribute:
|
|
if (VendorAttributesAllowed) {
|
|
ParseGNUAttributes(DS.getAttributes());
|
|
continue; // do *not* consume the next token!
|
|
}
|
|
// otherwise, FALL THROUGH!
|
|
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(Diags, PP);
|
|
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);
|
|
}
|
|
|
|
/// 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.
|
|
///
|
|
/// 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 (getLang().CPlusPlus &&
|
|
(Tok.is(tok::coloncolon) || Tok.is(tok::identifier) ||
|
|
Tok.is(tok::annot_cxxscope))) {
|
|
bool EnteringContext = D.getContext() == Declarator::FileContext ||
|
|
D.getContext() == Declarator::MemberContext;
|
|
CXXScopeSpec SS;
|
|
ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext);
|
|
|
|
if (SS.isNotEmpty()) {
|
|
if (Tok.isNot(tok::star)) {
|
|
// The scope spec really belongs to the direct-declarator.
|
|
D.getCXXScopeSpec() = SS;
|
|
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(),
|
|
Loc),
|
|
DS.getAttributes(),
|
|
/* Don't replace range end. */SourceLocation());
|
|
return;
|
|
}
|
|
}
|
|
|
|
tok::TokenKind Kind = Tok.getKind();
|
|
// Not a pointer, C++ reference, or block.
|
|
if (Kind != tok::star && Kind != tok::caret &&
|
|
(Kind != tok::amp || !getLang().CPlusPlus) &&
|
|
// We parse rvalue refs in C++03, because otherwise the errors are scary.
|
|
(Kind != tok::ampamp || !getLang().CPlusPlus)) {
|
|
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);
|
|
|
|
ParseTypeQualifierListOpt(DS);
|
|
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.getAttributes(),
|
|
SourceLocation());
|
|
else
|
|
// Remember that we parsed a Block type, and remember the type-quals.
|
|
D.AddTypeInfo(DeclaratorChunk::getBlockPointer(DS.getTypeQualifiers(),
|
|
Loc),
|
|
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, getLang().CPlusPlus0x ?
|
|
diag::warn_cxx98_compat_rvalue_reference :
|
|
diag::ext_rvalue_reference);
|
|
|
|
// 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.
|
|
//
|
|
// [GNU] Retricted references are allowed.
|
|
// [GNU] Attributes on references are allowed.
|
|
// [C++0x] Attributes on references are not allowed.
|
|
ParseTypeQualifierListOpt(DS, true, false);
|
|
D.ExtendWithDeclSpec(DS);
|
|
|
|
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";
|
|
}
|
|
|
|
// 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. It doesn't have type-quals.
|
|
D.AddTypeInfo(DeclaratorChunk::getReference(DS.getTypeQualifiers(), Loc,
|
|
Kind == tok::amp),
|
|
DS.getAttributes(),
|
|
SourceLocation());
|
|
}
|
|
}
|
|
|
|
/// 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] '*' ']'
|
|
/// 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++] declarator-id
|
|
///
|
|
/// 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
|
|
///
|
|
void Parser::ParseDirectDeclarator(Declarator &D) {
|
|
DeclaratorScopeObj DeclScopeObj(*this, D.getCXXScopeSpec());
|
|
|
|
if (getLang().CPlusPlus && D.mayHaveIdentifier()) {
|
|
// ParseDeclaratorInternal might already have parsed the scope.
|
|
if (D.getCXXScopeSpec().isEmpty()) {
|
|
bool EnteringContext = D.getContext() == Declarator::FileContext ||
|
|
D.getContext() == Declarator::MemberContext;
|
|
ParseOptionalCXXScopeSpecifier(D.getCXXScopeSpec(), ParsedType(),
|
|
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();
|
|
}
|
|
|
|
// 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 names a template
|
|
// parameter pack that has not been expanded; otherwise, it is parsed
|
|
// as part of the parameter-declaration-clause.
|
|
if (Tok.is(tok::ellipsis) &&
|
|
!((D.getContext() == Declarator::PrototypeContext ||
|
|
D.getContext() == Declarator::BlockLiteralContext) &&
|
|
NextToken().is(tok::r_paren) &&
|
|
!Actions.containsUnexpandedParameterPacks(D)))
|
|
D.setEllipsisLoc(ConsumeToken());
|
|
|
|
if (Tok.is(tok::identifier) || Tok.is(tok::kw_operator) ||
|
|
Tok.is(tok::annot_template_id) || Tok.is(tok::tilde)) {
|
|
// We found something that indicates the start of an unqualified-id.
|
|
// Parse that unqualified-id.
|
|
bool AllowConstructorName;
|
|
if (D.getDeclSpec().hasTypeSpecifier())
|
|
AllowConstructorName = false;
|
|
else if (D.getCXXScopeSpec().isSet())
|
|
AllowConstructorName =
|
|
(D.getContext() == Declarator::FileContext ||
|
|
(D.getContext() == Declarator::MemberContext &&
|
|
D.getDeclSpec().isFriendSpecified()));
|
|
else
|
|
AllowConstructorName = (D.getContext() == Declarator::MemberContext);
|
|
|
|
if (ParseUnqualifiedId(D.getCXXScopeSpec(),
|
|
/*EnteringContext=*/true,
|
|
/*AllowDestructorName=*/true,
|
|
AllowConstructorName,
|
|
ParsedType(),
|
|
D.getName()) ||
|
|
// Once we're past the identifier, if the scope was bad, mark the
|
|
// whole declarator bad.
|
|
D.getCXXScopeSpec().isInvalid()) {
|
|
D.SetIdentifier(0, Tok.getLocation());
|
|
D.setInvalidType(true);
|
|
} else {
|
|
// 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;
|
|
}
|
|
} else if (Tok.is(tok::identifier) && D.mayHaveIdentifier()) {
|
|
assert(!getLang().CPlusPlus &&
|
|
"There's a C++-specific check for tok::identifier above");
|
|
assert(Tok.getIdentifierInfo() && "Not an identifier?");
|
|
D.SetIdentifier(Tok.getIdentifierInfo(), Tok.getLocation());
|
|
ConsumeToken();
|
|
goto PastIdentifier;
|
|
}
|
|
|
|
if (Tok.is(tok::l_paren)) {
|
|
// 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 enterred 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(0, Tok.getLocation());
|
|
} else {
|
|
if (D.getContext() == Declarator::MemberContext)
|
|
Diag(Tok, diag::err_expected_member_name_or_semi)
|
|
<< D.getDeclSpec().getSourceRange();
|
|
else if (getLang().CPlusPlus)
|
|
Diag(Tok, diag::err_expected_unqualified_id) << getLang().CPlusPlus;
|
|
else
|
|
Diag(Tok, diag::err_expected_ident_lparen);
|
|
D.SetIdentifier(0, 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 an identifier.
|
|
if (D.getIdentifier())
|
|
MaybeParseCXX0XAttributes(D);
|
|
|
|
while (1) {
|
|
if (Tok.is(tok::l_paren)) {
|
|
// 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.
|
|
if (getLang().CPlusPlus && D.mayBeFollowedByCXXDirectInit()) {
|
|
// When not in file scope, warn for ambiguous function declarators, just
|
|
// in case the author intended it as a variable definition.
|
|
bool warnIfAmbiguous = D.getContext() != Declarator::FileContext;
|
|
if (!isCXXFunctionDeclarator(warnIfAmbiguous))
|
|
break;
|
|
}
|
|
ParsedAttributes attrs(AttrFactory);
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
T.consumeOpen();
|
|
ParseFunctionDeclarator(D, attrs, T);
|
|
} else if (Tok.is(tok::l_square)) {
|
|
ParseBracketDeclarator(D);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// 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.
|
|
if (Tok.is(tok::kw___cdecl) || Tok.is(tok::kw___stdcall) ||
|
|
Tok.is(tok::kw___thiscall) || Tok.is(tok::kw___fastcall) ||
|
|
Tok.is(tok::kw___w64) || Tok.is(tok::kw___ptr64) ||
|
|
Tok.is(tok::kw___ptr32) || Tok.is(tok::kw___unaligned)) {
|
|
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.
|
|
(getLang().CPlusPlus && Tok.is(tok::ellipsis)) || // C++ int(...)
|
|
isDeclarationSpecifier()) { // '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) {
|
|
bool hadGroupingParens = D.hasGroupingParens();
|
|
D.setGroupingParens(true);
|
|
|
|
ParseDeclaratorInternal(D, &Parser::ParseDirectDeclarator);
|
|
// Match the ')'.
|
|
T.consumeClose();
|
|
D.AddTypeInfo(DeclaratorChunk::getParen(T.getOpenLocation(),
|
|
T.getCloseLocation()),
|
|
attrs, T.getCloseLocation());
|
|
|
|
D.setGroupingParens(hadGroupingParens);
|
|
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(0, Tok.getLocation());
|
|
|
|
ParseFunctionDeclarator(D, attrs, T, RequiresArg);
|
|
}
|
|
|
|
/// 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 attrs 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 cv-qualifier-seq[opt],
|
|
/// (C++0x) ref-qualifier[opt], exception-specification[opt], and
|
|
/// (C++0x) trailing-return-type[opt].
|
|
///
|
|
/// [C++0x] exception-specification:
|
|
/// dynamic-exception-specification
|
|
/// noexcept-specification
|
|
///
|
|
void Parser::ParseFunctionDeclarator(Declarator &D,
|
|
ParsedAttributes &attrs,
|
|
BalancedDelimiterTracker &Tracker,
|
|
bool RequiresArg) {
|
|
// 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;
|
|
SourceLocation ConstQualifierLoc;
|
|
SourceLocation VolatileQualifierLoc;
|
|
ExceptionSpecificationType ESpecType = EST_None;
|
|
SourceRange ESpecRange;
|
|
SmallVector<ParsedType, 2> DynamicExceptions;
|
|
SmallVector<SourceRange, 2> DynamicExceptionRanges;
|
|
ExprResult NoexceptExpr;
|
|
ParsedType TrailingReturnType;
|
|
|
|
SourceLocation EndLoc;
|
|
if (isFunctionDeclaratorIdentifierList()) {
|
|
if (RequiresArg)
|
|
Diag(Tok, diag::err_argument_required_after_attribute);
|
|
|
|
ParseFunctionDeclaratorIdentifierList(D, ParamInfo);
|
|
|
|
Tracker.consumeClose();
|
|
EndLoc = Tracker.getCloseLocation();
|
|
} else {
|
|
// Enter function-declaration scope, limiting any declarators to the
|
|
// function prototype scope, including parameter declarators.
|
|
ParseScope PrototypeScope(this,
|
|
Scope::FunctionPrototypeScope|Scope::DeclScope);
|
|
|
|
if (Tok.isNot(tok::r_paren))
|
|
ParseParameterDeclarationClause(D, attrs, ParamInfo, EllipsisLoc);
|
|
else if (RequiresArg)
|
|
Diag(Tok, diag::err_argument_required_after_attribute);
|
|
|
|
HasProto = ParamInfo.size() || getLang().CPlusPlus;
|
|
|
|
// If we have the closing ')', eat it.
|
|
Tracker.consumeClose();
|
|
EndLoc = Tracker.getCloseLocation();
|
|
|
|
if (getLang().CPlusPlus) {
|
|
MaybeParseCXX0XAttributes(attrs);
|
|
|
|
// Parse cv-qualifier-seq[opt].
|
|
ParseTypeQualifierListOpt(DS, false /*no attributes*/);
|
|
if (!DS.getSourceRange().getEnd().isInvalid()) {
|
|
EndLoc = DS.getSourceRange().getEnd();
|
|
ConstQualifierLoc = DS.getConstSpecLoc();
|
|
VolatileQualifierLoc = DS.getVolatileSpecLoc();
|
|
}
|
|
|
|
// Parse ref-qualifier[opt].
|
|
if (Tok.is(tok::amp) || Tok.is(tok::ampamp)) {
|
|
Diag(Tok, getLang().CPlusPlus0x ?
|
|
diag::warn_cxx98_compat_ref_qualifier :
|
|
diag::ext_ref_qualifier);
|
|
|
|
RefQualifierIsLValueRef = Tok.is(tok::amp);
|
|
RefQualifierLoc = ConsumeToken();
|
|
EndLoc = RefQualifierLoc;
|
|
}
|
|
|
|
// Parse exception-specification[opt].
|
|
ESpecType = MaybeParseExceptionSpecification(ESpecRange,
|
|
DynamicExceptions,
|
|
DynamicExceptionRanges,
|
|
NoexceptExpr);
|
|
if (ESpecType != EST_None)
|
|
EndLoc = ESpecRange.getEnd();
|
|
|
|
// Parse trailing-return-type[opt].
|
|
if (getLang().CPlusPlus0x && Tok.is(tok::arrow)) {
|
|
Diag(Tok, diag::warn_cxx98_compat_trailing_return_type);
|
|
SourceRange Range;
|
|
TrailingReturnType = ParseTrailingReturnType(Range).get();
|
|
if (Range.getEnd().isValid())
|
|
EndLoc = Range.getEnd();
|
|
}
|
|
}
|
|
|
|
// Leave prototype scope.
|
|
PrototypeScope.Exit();
|
|
}
|
|
|
|
// Remember that we parsed a function type, and remember the attributes.
|
|
D.AddTypeInfo(DeclaratorChunk::getFunction(HasProto,
|
|
/*isVariadic=*/EllipsisLoc.isValid(),
|
|
EllipsisLoc,
|
|
ParamInfo.data(), ParamInfo.size(),
|
|
DS.getTypeQualifiers(),
|
|
RefQualifierIsLValueRef,
|
|
RefQualifierLoc, ConstQualifierLoc,
|
|
VolatileQualifierLoc,
|
|
/*MutableLoc=*/SourceLocation(),
|
|
ESpecType, ESpecRange.getBegin(),
|
|
DynamicExceptions.data(),
|
|
DynamicExceptionRanges.data(),
|
|
DynamicExceptions.size(),
|
|
NoexceptExpr.isUsable() ?
|
|
NoexceptExpr.get() : 0,
|
|
Tracker.getOpenLocation(),
|
|
EndLoc, D,
|
|
TrailingReturnType),
|
|
attrs, EndLoc);
|
|
}
|
|
|
|
/// 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 !getLang().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.
|
|
&& (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,
|
|
SmallVector<DeclaratorChunk::ParamInfo, 16> &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;
|
|
|
|
while (1) {
|
|
// If this isn't an identifier, report the error and skip until ')'.
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
SkipUntil(tok::r_paren, /*StopAtSemi=*/true, /*DontConsume=*/true);
|
|
// 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)) {
|
|
Diag(Tok, diag::err_param_redefinition) << ParmII;
|
|
} else {
|
|
// Remember this identifier in ParamInfo.
|
|
ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII,
|
|
Tok.getLocation(),
|
|
0));
|
|
}
|
|
|
|
// Eat the identifier.
|
|
ConsumeToken();
|
|
|
|
// The list continues if we see a comma.
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
ConsumeToken();
|
|
}
|
|
}
|
|
|
|
/// 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 attrs 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.
|
|
///
|
|
/// 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
|
|
/// [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
|
|
///
|
|
void Parser::ParseParameterDeclarationClause(
|
|
Declarator &D,
|
|
ParsedAttributes &attrs,
|
|
SmallVector<DeclaratorChunk::ParamInfo, 16> &ParamInfo,
|
|
SourceLocation &EllipsisLoc) {
|
|
|
|
while (1) {
|
|
if (Tok.is(tok::ellipsis)) {
|
|
EllipsisLoc = ConsumeToken(); // Consume the ellipsis.
|
|
break;
|
|
}
|
|
|
|
// Parse the declaration-specifiers.
|
|
// Just use the ParsingDeclaration "scope" of the declarator.
|
|
DeclSpec DS(AttrFactory);
|
|
|
|
// Skip any Microsoft attributes before a param.
|
|
if (getLang().MicrosoftExt && Tok.is(tok::l_square))
|
|
ParseMicrosoftAttributes(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 saw an ellipsis first, this code is not reached. Are the
|
|
// attributes lost? Should they even be allowed?
|
|
// FIXME: If we can leave the attributes in the token stream somehow, we can
|
|
// get rid of a parameter (attrs) and this statement. It might be too much
|
|
// hassle.
|
|
DS.takeAttributesFrom(attrs);
|
|
|
|
ParseDeclarationSpecifiers(DS);
|
|
|
|
// Parse the declarator. This is "PrototypeContext", because we must
|
|
// accept either 'declarator' or 'abstract-declarator' here.
|
|
Declarator ParmDecl(DS, Declarator::PrototypeContext);
|
|
ParseDeclarator(ParmDecl);
|
|
|
|
// Parse GNU attributes, if present.
|
|
MaybeParseGNUAttributes(ParmDecl);
|
|
|
|
// Remember this parsed parameter in ParamInfo.
|
|
IdentifierInfo *ParmII = ParmDecl.getIdentifier();
|
|
|
|
// DefArgToks is used when the parsing of default arguments needs
|
|
// to be delayed.
|
|
CachedTokens *DefArgToks = 0;
|
|
|
|
// If no parameter was specified, verify that *something* was specified,
|
|
// otherwise we have a missing type and identifier.
|
|
if (DS.isEmpty() && ParmDecl.getIdentifier() == 0 &&
|
|
ParmDecl.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.
|
|
|
|
// Inform the actions module about the parameter declarator, so it gets
|
|
// added to the current scope.
|
|
Decl *Param = Actions.ActOnParamDeclarator(getCurScope(), ParmDecl);
|
|
|
|
// 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() == Declarator::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.
|
|
// FIXME: Templates will require something similar.
|
|
// FIXME: Can we use a smart pointer for Toks?
|
|
DefArgToks = new CachedTokens;
|
|
|
|
if (!ConsumeAndStoreUntil(tok::comma, tok::r_paren, *DefArgToks,
|
|
/*StopAtSemi=*/true,
|
|
/*ConsumeFinalToken=*/false)) {
|
|
delete DefArgToks;
|
|
DefArgToks = 0;
|
|
Actions.ActOnParamDefaultArgumentError(Param);
|
|
} else {
|
|
// Mark the end of the default argument so that we know when to
|
|
// stop when we parse it later on.
|
|
Token DefArgEnd;
|
|
DefArgEnd.startToken();
|
|
DefArgEnd.setKind(tok::cxx_defaultarg_end);
|
|
DefArgEnd.setLocation(Tok.getLocation());
|
|
DefArgToks->push_back(DefArgEnd);
|
|
Actions.ActOnParamUnparsedDefaultArgument(Param, EqualLoc,
|
|
(*DefArgToks)[1].getLocation());
|
|
}
|
|
} else {
|
|
// Consume the '='.
|
|
ConsumeToken();
|
|
|
|
// The argument isn't actually potentially evaluated unless it is
|
|
// used.
|
|
EnterExpressionEvaluationContext Eval(Actions,
|
|
Sema::PotentiallyEvaluatedIfUsed);
|
|
|
|
ExprResult DefArgResult(ParseAssignmentExpression());
|
|
if (DefArgResult.isInvalid()) {
|
|
Actions.ActOnParamDefaultArgumentError(Param);
|
|
SkipUntil(tok::comma, tok::r_paren, true, true);
|
|
} else {
|
|
// Inform the actions module about the default argument
|
|
Actions.ActOnParamDefaultArgument(Param, EqualLoc,
|
|
DefArgResult.take());
|
|
}
|
|
}
|
|
}
|
|
|
|
ParamInfo.push_back(DeclaratorChunk::ParamInfo(ParmII,
|
|
ParmDecl.getIdentifierLoc(), Param,
|
|
DefArgToks));
|
|
}
|
|
|
|
// If the next token is a comma, consume it and keep reading arguments.
|
|
if (Tok.isNot(tok::comma)) {
|
|
if (Tok.is(tok::ellipsis)) {
|
|
EllipsisLoc = ConsumeToken(); // Consume the ellipsis.
|
|
|
|
if (!getLang().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, ", ");
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
// Consume the comma.
|
|
ConsumeToken();
|
|
}
|
|
|
|
}
|
|
|
|
/// [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] '*' ']'
|
|
void Parser::ParseBracketDeclarator(Declarator &D) {
|
|
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);
|
|
MaybeParseCXX0XAttributes(attrs);
|
|
|
|
// Remember that we parsed the empty array type.
|
|
ExprResult NumElements;
|
|
D.AddTypeInfo(DeclaratorChunk::getArray(0, false, false, 0,
|
|
T.getOpenLocation(),
|
|
T.getCloseLocation()),
|
|
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));
|
|
ConsumeToken();
|
|
|
|
T.consumeClose();
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseCXX0XAttributes(attrs);
|
|
|
|
// Remember that we parsed a array type, and remember its features.
|
|
D.AddTypeInfo(DeclaratorChunk::getArray(0, false, 0,
|
|
ExprRes.release(),
|
|
T.getOpenLocation(),
|
|
T.getCloseLocation()),
|
|
attrs, T.getCloseLocation());
|
|
return;
|
|
}
|
|
|
|
// If valid, this location is the position where we read the 'static' keyword.
|
|
SourceLocation StaticLoc;
|
|
if (Tok.is(tok::kw_static))
|
|
StaticLoc = ConsumeToken();
|
|
|
|
// 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, false /*no attributes*/);
|
|
|
|
// If we haven't already read 'static', check to see if there is one after the
|
|
// type-qualifier-list.
|
|
if (!StaticLoc.isValid() && Tok.is(tok::kw_static))
|
|
StaticLoc = ConsumeToken();
|
|
|
|
// 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 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 (getLang().CPlusPlus)
|
|
NumElements = ParseConstantExpression();
|
|
else
|
|
NumElements = ParseAssignmentExpression();
|
|
}
|
|
|
|
// 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);
|
|
return;
|
|
}
|
|
|
|
T.consumeClose();
|
|
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseCXX0XAttributes(attrs);
|
|
|
|
// Remember that we parsed a array type, and remember its features.
|
|
D.AddTypeInfo(DeclaratorChunk::getArray(DS.getTypeQualifiers(),
|
|
StaticLoc.isValid(), isStar,
|
|
NumElements.release(),
|
|
T.getOpenLocation(),
|
|
T.getCloseLocation()),
|
|
attrs, T.getCloseLocation());
|
|
}
|
|
|
|
/// [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);
|
|
|
|
bool isCastExpr;
|
|
ParsedType CastTy;
|
|
SourceRange CastRange;
|
|
ExprResult Operand = 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 = 0;
|
|
unsigned DiagID;
|
|
// Check for duplicate type specifiers (e.g. "int typeof(int)").
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_typeofType, StartLoc, PrevSpec,
|
|
DiagID, CastTy))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
return;
|
|
}
|
|
|
|
// If we get here, the operand to the typeof was an expresion.
|
|
if (Operand.isInvalid()) {
|
|
DS.SetTypeSpecError();
|
|
return;
|
|
}
|
|
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID;
|
|
// Check for duplicate type specifiers (e.g. "int typeof(int)").
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_typeofExpr, StartLoc, PrevSpec,
|
|
DiagID, Operand.get()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
}
|
|
|
|
/// [C1X] atomic-specifier:
|
|
/// _Atomic ( type-name )
|
|
///
|
|
void Parser::ParseAtomicSpecifier(DeclSpec &DS) {
|
|
assert(Tok.is(tok::kw__Atomic) && "Not an atomic specifier");
|
|
|
|
SourceLocation StartLoc = ConsumeToken();
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.expectAndConsume(diag::err_expected_lparen_after, "_Atomic")) {
|
|
SkipUntil(tok::r_paren);
|
|
return;
|
|
}
|
|
|
|
TypeResult Result = ParseTypeName();
|
|
if (Result.isInvalid()) {
|
|
SkipUntil(tok::r_paren);
|
|
return;
|
|
}
|
|
|
|
// Match the ')'
|
|
T.consumeClose();
|
|
|
|
if (T.getCloseLocation().isInvalid())
|
|
return;
|
|
|
|
DS.setTypeofParensRange(T.getRange());
|
|
DS.SetRangeEnd(T.getCloseLocation());
|
|
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID;
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_atomic, StartLoc, PrevSpec,
|
|
DiagID, Result.release()))
|
|
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___pixel:
|
|
Tok.setKind(tok::kw___vector);
|
|
return true;
|
|
case tok::identifier:
|
|
if (Next.getIdentifierInfo() == Ident_pixel) {
|
|
Tok.setKind(tok::kw___vector);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool Parser::TryAltiVecTokenOutOfLine(DeclSpec &DS, SourceLocation Loc,
|
|
const char *&PrevSpec, unsigned &DiagID,
|
|
bool &isInvalid) {
|
|
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___pixel:
|
|
isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID);
|
|
return true;
|
|
case tok::identifier:
|
|
if (Next.getIdentifierInfo() == Ident_pixel) {
|
|
isInvalid = DS.SetTypeAltiVecVector(true, Loc, PrevSpec, DiagID);
|
|
return true;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else if ((Tok.getIdentifierInfo() == Ident_pixel) &&
|
|
DS.isTypeAltiVecVector()) {
|
|
isInvalid = DS.SetTypeAltiVecPixel(true, Loc, PrevSpec, DiagID);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|