forked from OSchip/llvm-project
1681 lines
55 KiB
C++
1681 lines
55 KiB
C++
//===--- ParseObjC.cpp - Objective C 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 Objective-C portions of the Parser interface.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Parse/Parser.h"
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#include "clang/Parse/DeclSpec.h"
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#include "clang/Parse/Scope.h"
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#include "clang/Basic/Diagnostic.h"
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#include "llvm/ADT/SmallVector.h"
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using namespace clang;
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/// ParseExternalDeclaration:
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/// external-declaration: [C99 6.9]
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/// [OBJC] objc-class-definition
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/// [OBJC] objc-class-declaration
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/// [OBJC] objc-alias-declaration
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/// [OBJC] objc-protocol-definition
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/// [OBJC] objc-method-definition
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/// [OBJC] '@' 'end'
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Parser::DeclTy *Parser::ParseObjCAtDirectives() {
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SourceLocation AtLoc = ConsumeToken(); // the "@"
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switch (Tok.getObjCKeywordID()) {
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case tok::objc_class:
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return ParseObjCAtClassDeclaration(AtLoc);
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case tok::objc_interface:
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return ParseObjCAtInterfaceDeclaration(AtLoc);
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case tok::objc_protocol:
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return ParseObjCAtProtocolDeclaration(AtLoc);
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case tok::objc_implementation:
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return ParseObjCAtImplementationDeclaration(AtLoc);
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case tok::objc_end:
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return ParseObjCAtEndDeclaration(AtLoc);
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case tok::objc_compatibility_alias:
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return ParseObjCAtAliasDeclaration(AtLoc);
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case tok::objc_synthesize:
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return ParseObjCPropertySynthesize(AtLoc);
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case tok::objc_dynamic:
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return ParseObjCPropertyDynamic(AtLoc);
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default:
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Diag(AtLoc, diag::err_unexpected_at);
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SkipUntil(tok::semi);
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return 0;
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}
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}
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///
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/// objc-class-declaration:
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/// '@' 'class' identifier-list ';'
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///
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Parser::DeclTy *Parser::ParseObjCAtClassDeclaration(SourceLocation atLoc) {
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ConsumeToken(); // the identifier "class"
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llvm::SmallVector<IdentifierInfo *, 8> ClassNames;
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while (1) {
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if (Tok.isNot(tok::identifier)) {
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Diag(Tok, diag::err_expected_ident);
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SkipUntil(tok::semi);
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return 0;
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}
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ClassNames.push_back(Tok.getIdentifierInfo());
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ConsumeToken();
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if (Tok.isNot(tok::comma))
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break;
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ConsumeToken();
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}
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// Consume the ';'.
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if (ExpectAndConsume(tok::semi, diag::err_expected_semi_after, "@class"))
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return 0;
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return Actions.ActOnForwardClassDeclaration(atLoc,
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&ClassNames[0], ClassNames.size());
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}
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///
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/// objc-interface:
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/// objc-class-interface-attributes[opt] objc-class-interface
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/// objc-category-interface
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///
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/// objc-class-interface:
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/// '@' 'interface' identifier objc-superclass[opt]
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/// objc-protocol-refs[opt]
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/// objc-class-instance-variables[opt]
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/// objc-interface-decl-list
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/// @end
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///
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/// objc-category-interface:
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/// '@' 'interface' identifier '(' identifier[opt] ')'
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/// objc-protocol-refs[opt]
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/// objc-interface-decl-list
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/// @end
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///
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/// objc-superclass:
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/// ':' identifier
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///
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/// objc-class-interface-attributes:
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/// __attribute__((visibility("default")))
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/// __attribute__((visibility("hidden")))
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/// __attribute__((deprecated))
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/// __attribute__((unavailable))
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/// __attribute__((objc_exception)) - used by NSException on 64-bit
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///
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Parser::DeclTy *Parser::ParseObjCAtInterfaceDeclaration(
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SourceLocation atLoc, AttributeList *attrList) {
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assert(Tok.isObjCAtKeyword(tok::objc_interface) &&
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"ParseObjCAtInterfaceDeclaration(): Expected @interface");
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ConsumeToken(); // the "interface" identifier
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if (Tok.isNot(tok::identifier)) {
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Diag(Tok, diag::err_expected_ident); // missing class or category name.
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return 0;
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}
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// We have a class or category name - consume it.
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IdentifierInfo *nameId = Tok.getIdentifierInfo();
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SourceLocation nameLoc = ConsumeToken();
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if (Tok.is(tok::l_paren)) { // we have a category.
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SourceLocation lparenLoc = ConsumeParen();
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SourceLocation categoryLoc, rparenLoc;
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IdentifierInfo *categoryId = 0;
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// For ObjC2, the category name is optional (not an error).
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if (Tok.is(tok::identifier)) {
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categoryId = Tok.getIdentifierInfo();
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categoryLoc = ConsumeToken();
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} else if (!getLang().ObjC2) {
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Diag(Tok, diag::err_expected_ident); // missing category name.
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return 0;
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}
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if (Tok.isNot(tok::r_paren)) {
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Diag(Tok, diag::err_expected_rparen);
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SkipUntil(tok::r_paren, false); // don't stop at ';'
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return 0;
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}
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rparenLoc = ConsumeParen();
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// Next, we need to check for any protocol references.
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SourceLocation EndProtoLoc;
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llvm::SmallVector<DeclTy *, 8> ProtocolRefs;
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if (Tok.is(tok::less) &&
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ParseObjCProtocolReferences(ProtocolRefs, true, EndProtoLoc))
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return 0;
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if (attrList) // categories don't support attributes.
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Diag(Tok, diag::err_objc_no_attributes_on_category);
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DeclTy *CategoryType = Actions.ActOnStartCategoryInterface(atLoc,
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nameId, nameLoc, categoryId, categoryLoc,
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&ProtocolRefs[0], ProtocolRefs.size(),
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EndProtoLoc);
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ParseObjCInterfaceDeclList(CategoryType, tok::objc_not_keyword);
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return CategoryType;
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}
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// Parse a class interface.
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IdentifierInfo *superClassId = 0;
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SourceLocation superClassLoc;
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if (Tok.is(tok::colon)) { // a super class is specified.
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ConsumeToken();
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if (Tok.isNot(tok::identifier)) {
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Diag(Tok, diag::err_expected_ident); // missing super class name.
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return 0;
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}
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superClassId = Tok.getIdentifierInfo();
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superClassLoc = ConsumeToken();
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}
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// Next, we need to check for any protocol references.
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llvm::SmallVector<Action::DeclTy*, 8> ProtocolRefs;
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SourceLocation EndProtoLoc;
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if (Tok.is(tok::less) &&
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ParseObjCProtocolReferences(ProtocolRefs, true, EndProtoLoc))
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return 0;
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DeclTy *ClsType =
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Actions.ActOnStartClassInterface(atLoc, nameId, nameLoc,
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superClassId, superClassLoc,
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&ProtocolRefs[0], ProtocolRefs.size(),
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EndProtoLoc, attrList);
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if (Tok.is(tok::l_brace))
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ParseObjCClassInstanceVariables(ClsType, atLoc);
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ParseObjCInterfaceDeclList(ClsType, tok::objc_interface);
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return ClsType;
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}
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/// constructSetterName - Return the setter name for the given
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/// identifier, i.e. "set" + Name where the initial character of Name
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/// has been capitalized.
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static IdentifierInfo *constructSetterName(IdentifierTable &Idents,
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const IdentifierInfo *Name) {
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unsigned N = Name->getLength();
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char *SelectorName = new char[3 + N];
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memcpy(SelectorName, "set", 3);
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memcpy(&SelectorName[3], Name->getName(), N);
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SelectorName[3] = toupper(SelectorName[3]);
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IdentifierInfo *Setter =
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&Idents.get(SelectorName, &SelectorName[3 + N]);
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delete[] SelectorName;
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return Setter;
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}
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/// objc-interface-decl-list:
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/// empty
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/// objc-interface-decl-list objc-property-decl [OBJC2]
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/// objc-interface-decl-list objc-method-requirement [OBJC2]
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/// objc-interface-decl-list objc-method-proto ';'
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/// objc-interface-decl-list declaration
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/// objc-interface-decl-list ';'
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///
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/// objc-method-requirement: [OBJC2]
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/// @required
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/// @optional
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///
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void Parser::ParseObjCInterfaceDeclList(DeclTy *interfaceDecl,
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tok::ObjCKeywordKind contextKey) {
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llvm::SmallVector<DeclTy*, 32> allMethods;
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llvm::SmallVector<DeclTy*, 16> allProperties;
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tok::ObjCKeywordKind MethodImplKind = tok::objc_not_keyword;
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SourceLocation AtEndLoc;
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while (1) {
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// If this is a method prototype, parse it.
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if (Tok.is(tok::minus) || Tok.is(tok::plus)) {
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DeclTy *methodPrototype =
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ParseObjCMethodPrototype(interfaceDecl, MethodImplKind);
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allMethods.push_back(methodPrototype);
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// Consume the ';' here, since ParseObjCMethodPrototype() is re-used for
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// method definitions.
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ExpectAndConsume(tok::semi, diag::err_expected_semi_after,"method proto");
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continue;
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}
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// Ignore excess semicolons.
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if (Tok.is(tok::semi)) {
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ConsumeToken();
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continue;
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}
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// If we got to the end of the file, exit the loop.
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if (Tok.is(tok::eof))
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break;
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// If we don't have an @ directive, parse it as a function definition.
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if (Tok.isNot(tok::at)) {
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// FIXME: as the name implies, this rule allows function definitions.
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// We could pass a flag or check for functions during semantic analysis.
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ParseDeclarationOrFunctionDefinition();
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continue;
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}
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// Otherwise, we have an @ directive, eat the @.
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SourceLocation AtLoc = ConsumeToken(); // the "@"
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tok::ObjCKeywordKind DirectiveKind = Tok.getObjCKeywordID();
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if (DirectiveKind == tok::objc_end) { // @end -> terminate list
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AtEndLoc = AtLoc;
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break;
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}
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// Eat the identifier.
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ConsumeToken();
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switch (DirectiveKind) {
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default:
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// FIXME: If someone forgets an @end on a protocol, this loop will
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// continue to eat up tons of stuff and spew lots of nonsense errors. It
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// would probably be better to bail out if we saw an @class or @interface
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// or something like that.
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Diag(AtLoc, diag::err_objc_illegal_interface_qual);
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// Skip until we see an '@' or '}' or ';'.
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SkipUntil(tok::r_brace, tok::at);
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break;
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case tok::objc_required:
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case tok::objc_optional:
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// This is only valid on protocols.
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// FIXME: Should this check for ObjC2 being enabled?
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if (contextKey != tok::objc_protocol)
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Diag(AtLoc, diag::err_objc_directive_only_in_protocol);
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else
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MethodImplKind = DirectiveKind;
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break;
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case tok::objc_property:
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if (!getLang().ObjC2)
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Diag(AtLoc, diag::err_objc_propertoes_require_objc2);
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ObjCDeclSpec OCDS;
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// Parse property attribute list, if any.
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if (Tok.is(tok::l_paren))
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ParseObjCPropertyAttribute(OCDS);
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// Parse all the comma separated declarators.
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DeclSpec DS;
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llvm::SmallVector<FieldDeclarator, 8> FieldDeclarators;
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ParseStructDeclaration(DS, FieldDeclarators);
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ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list, "",
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tok::at);
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// Convert them all to property declarations.
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for (unsigned i = 0, e = FieldDeclarators.size(); i != e; ++i) {
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FieldDeclarator &FD = FieldDeclarators[i];
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if (FD.D.getIdentifier() == 0) {
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Diag(AtLoc, diag::err_objc_property_requires_field_name,
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FD.D.getSourceRange());
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continue;
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}
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// Install the property declarator into interfaceDecl.
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IdentifierInfo *SelName =
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OCDS.getGetterName() ? OCDS.getGetterName() : FD.D.getIdentifier();
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Selector GetterSel =
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PP.getSelectorTable().getNullarySelector(SelName);
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IdentifierInfo *SetterName = OCDS.getSetterName();
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if (!SetterName)
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SetterName = constructSetterName(PP.getIdentifierTable(),
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FD.D.getIdentifier());
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Selector SetterSel =
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PP.getSelectorTable().getUnarySelector(SetterName);
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DeclTy *Property = Actions.ActOnProperty(CurScope, AtLoc, FD, OCDS,
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GetterSel, SetterSel,
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MethodImplKind);
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allProperties.push_back(Property);
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}
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break;
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}
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}
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// We break out of the big loop in two cases: when we see @end or when we see
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// EOF. In the former case, eat the @end. In the later case, emit an error.
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if (Tok.isObjCAtKeyword(tok::objc_end))
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ConsumeToken(); // the "end" identifier
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else
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Diag(Tok, diag::err_objc_missing_end);
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// Insert collected methods declarations into the @interface object.
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// This passes in an invalid SourceLocation for AtEndLoc when EOF is hit.
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Actions.ActOnAtEnd(AtEndLoc, interfaceDecl,
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allMethods.empty() ? 0 : &allMethods[0],
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allMethods.size(),
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allProperties.empty() ? 0 : &allProperties[0],
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allProperties.size());
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}
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/// Parse property attribute declarations.
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///
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/// property-attr-decl: '(' property-attrlist ')'
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/// property-attrlist:
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/// property-attribute
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/// property-attrlist ',' property-attribute
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/// property-attribute:
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/// getter '=' identifier
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/// setter '=' identifier ':'
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/// readonly
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/// readwrite
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/// assign
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/// retain
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/// copy
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/// nonatomic
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///
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void Parser::ParseObjCPropertyAttribute(ObjCDeclSpec &DS) {
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assert(Tok.getKind() == tok::l_paren);
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SourceLocation LHSLoc = ConsumeParen(); // consume '('
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while (1) {
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const IdentifierInfo *II = Tok.getIdentifierInfo();
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// If this is not an identifier at all, bail out early.
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if (II == 0) {
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MatchRHSPunctuation(tok::r_paren, LHSLoc);
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return;
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}
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SourceLocation AttrName = ConsumeToken(); // consume last attribute name
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if (!strcmp(II->getName(), "readonly"))
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DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_readonly);
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else if (!strcmp(II->getName(), "assign"))
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DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_assign);
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else if (!strcmp(II->getName(), "readwrite"))
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DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_readwrite);
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else if (!strcmp(II->getName(), "retain"))
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DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_retain);
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else if (!strcmp(II->getName(), "copy"))
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DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_copy);
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else if (!strcmp(II->getName(), "nonatomic"))
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DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_nonatomic);
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else if (!strcmp(II->getName(), "getter") ||
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!strcmp(II->getName(), "setter")) {
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// getter/setter require extra treatment.
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if (ExpectAndConsume(tok::equal, diag::err_objc_expected_equal, "",
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tok::r_paren))
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return;
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if (Tok.isNot(tok::identifier)) {
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Diag(Tok, diag::err_expected_ident);
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SkipUntil(tok::r_paren);
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return;
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}
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if (II->getName()[0] == 's') {
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DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_setter);
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DS.setSetterName(Tok.getIdentifierInfo());
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ConsumeToken(); // consume method name
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if (ExpectAndConsume(tok::colon, diag::err_expected_colon, "",
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tok::r_paren))
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return;
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} else {
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DS.setPropertyAttributes(ObjCDeclSpec::DQ_PR_getter);
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DS.setGetterName(Tok.getIdentifierInfo());
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ConsumeToken(); // consume method name
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}
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} else {
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Diag(AttrName, diag::err_objc_expected_property_attr) << II->getName();
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SkipUntil(tok::r_paren);
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return;
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}
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if (Tok.isNot(tok::comma))
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break;
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ConsumeToken();
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}
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MatchRHSPunctuation(tok::r_paren, LHSLoc);
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}
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/// objc-method-proto:
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/// objc-instance-method objc-method-decl objc-method-attributes[opt]
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/// objc-class-method objc-method-decl objc-method-attributes[opt]
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///
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/// objc-instance-method: '-'
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/// objc-class-method: '+'
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///
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/// objc-method-attributes: [OBJC2]
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/// __attribute__((deprecated))
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///
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Parser::DeclTy *Parser::ParseObjCMethodPrototype(DeclTy *IDecl,
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tok::ObjCKeywordKind MethodImplKind) {
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assert((Tok.is(tok::minus) || Tok.is(tok::plus)) && "expected +/-");
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tok::TokenKind methodType = Tok.getKind();
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SourceLocation mLoc = ConsumeToken();
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DeclTy *MDecl = ParseObjCMethodDecl(mLoc, methodType, IDecl, MethodImplKind);
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// Since this rule is used for both method declarations and definitions,
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// the caller is (optionally) responsible for consuming the ';'.
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return MDecl;
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}
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/// objc-selector:
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/// identifier
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/// one of
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/// enum struct union if else while do for switch case default
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/// break continue return goto asm sizeof typeof __alignof
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/// unsigned long const short volatile signed restrict _Complex
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/// in out inout bycopy byref oneway int char float double void _Bool
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///
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IdentifierInfo *Parser::ParseObjCSelector(SourceLocation &SelectorLoc) {
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switch (Tok.getKind()) {
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default:
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return 0;
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case tok::identifier:
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case tok::kw_asm:
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case tok::kw_auto:
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case tok::kw_bool:
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case tok::kw_break:
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case tok::kw_case:
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case tok::kw_catch:
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case tok::kw_char:
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case tok::kw_class:
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case tok::kw_const:
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case tok::kw_const_cast:
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case tok::kw_continue:
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case tok::kw_default:
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case tok::kw_delete:
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case tok::kw_do:
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case tok::kw_double:
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case tok::kw_dynamic_cast:
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case tok::kw_else:
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case tok::kw_enum:
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case tok::kw_explicit:
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case tok::kw_export:
|
|
case tok::kw_extern:
|
|
case tok::kw_false:
|
|
case tok::kw_float:
|
|
case tok::kw_for:
|
|
case tok::kw_friend:
|
|
case tok::kw_goto:
|
|
case tok::kw_if:
|
|
case tok::kw_inline:
|
|
case tok::kw_int:
|
|
case tok::kw_long:
|
|
case tok::kw_mutable:
|
|
case tok::kw_namespace:
|
|
case tok::kw_new:
|
|
case tok::kw_operator:
|
|
case tok::kw_private:
|
|
case tok::kw_protected:
|
|
case tok::kw_public:
|
|
case tok::kw_register:
|
|
case tok::kw_reinterpret_cast:
|
|
case tok::kw_restrict:
|
|
case tok::kw_return:
|
|
case tok::kw_short:
|
|
case tok::kw_signed:
|
|
case tok::kw_sizeof:
|
|
case tok::kw_static:
|
|
case tok::kw_static_cast:
|
|
case tok::kw_struct:
|
|
case tok::kw_switch:
|
|
case tok::kw_template:
|
|
case tok::kw_this:
|
|
case tok::kw_throw:
|
|
case tok::kw_true:
|
|
case tok::kw_try:
|
|
case tok::kw_typedef:
|
|
case tok::kw_typeid:
|
|
case tok::kw_typename:
|
|
case tok::kw_typeof:
|
|
case tok::kw_union:
|
|
case tok::kw_unsigned:
|
|
case tok::kw_using:
|
|
case tok::kw_virtual:
|
|
case tok::kw_void:
|
|
case tok::kw_volatile:
|
|
case tok::kw_wchar_t:
|
|
case tok::kw_while:
|
|
case tok::kw__Bool:
|
|
case tok::kw__Complex:
|
|
case tok::kw___alignof:
|
|
IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
SelectorLoc = ConsumeToken();
|
|
return II;
|
|
}
|
|
}
|
|
|
|
/// objc-for-collection-in: 'in'
|
|
///
|
|
bool Parser::isTokIdentifier_in() const {
|
|
// FIXME: May have to do additional look-ahead to only allow for
|
|
// valid tokens following an 'in'; such as an identifier, unary operators,
|
|
// '[' etc.
|
|
return (getLang().ObjC2 && Tok.is(tok::identifier) &&
|
|
Tok.getIdentifierInfo() == ObjCTypeQuals[objc_in]);
|
|
}
|
|
|
|
/// ParseObjCTypeQualifierList - This routine parses the objective-c's type
|
|
/// qualifier list and builds their bitmask representation in the input
|
|
/// argument.
|
|
///
|
|
/// objc-type-qualifiers:
|
|
/// objc-type-qualifier
|
|
/// objc-type-qualifiers objc-type-qualifier
|
|
///
|
|
void Parser::ParseObjCTypeQualifierList(ObjCDeclSpec &DS) {
|
|
while (1) {
|
|
if (Tok.isNot(tok::identifier))
|
|
return;
|
|
|
|
const IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
for (unsigned i = 0; i != objc_NumQuals; ++i) {
|
|
if (II != ObjCTypeQuals[i])
|
|
continue;
|
|
|
|
ObjCDeclSpec::ObjCDeclQualifier Qual;
|
|
switch (i) {
|
|
default: assert(0 && "Unknown decl qualifier");
|
|
case objc_in: Qual = ObjCDeclSpec::DQ_In; break;
|
|
case objc_out: Qual = ObjCDeclSpec::DQ_Out; break;
|
|
case objc_inout: Qual = ObjCDeclSpec::DQ_Inout; break;
|
|
case objc_oneway: Qual = ObjCDeclSpec::DQ_Oneway; break;
|
|
case objc_bycopy: Qual = ObjCDeclSpec::DQ_Bycopy; break;
|
|
case objc_byref: Qual = ObjCDeclSpec::DQ_Byref; break;
|
|
}
|
|
DS.setObjCDeclQualifier(Qual);
|
|
ConsumeToken();
|
|
II = 0;
|
|
break;
|
|
}
|
|
|
|
// If this wasn't a recognized qualifier, bail out.
|
|
if (II) return;
|
|
}
|
|
}
|
|
|
|
/// objc-type-name:
|
|
/// '(' objc-type-qualifiers[opt] type-name ')'
|
|
/// '(' objc-type-qualifiers[opt] ')'
|
|
///
|
|
Parser::TypeTy *Parser::ParseObjCTypeName(ObjCDeclSpec &DS) {
|
|
assert(Tok.is(tok::l_paren) && "expected (");
|
|
|
|
SourceLocation LParenLoc = ConsumeParen();
|
|
SourceLocation TypeStartLoc = Tok.getLocation();
|
|
|
|
// Parse type qualifiers, in, inout, etc.
|
|
ParseObjCTypeQualifierList(DS);
|
|
|
|
TypeTy *Ty = 0;
|
|
if (isTypeSpecifierQualifier())
|
|
Ty = ParseTypeName();
|
|
|
|
if (Tok.is(tok::r_paren))
|
|
ConsumeParen();
|
|
else if (Tok.getLocation() == TypeStartLoc) {
|
|
// If we didn't eat any tokens, then this isn't a type.
|
|
Diag(Tok, diag::err_expected_type);
|
|
SkipUntil(tok::r_paren);
|
|
} else {
|
|
// Otherwise, we found *something*, but didn't get a ')' in the right
|
|
// place. Emit an error then return what we have as the type.
|
|
MatchRHSPunctuation(tok::r_paren, LParenLoc);
|
|
}
|
|
return Ty;
|
|
}
|
|
|
|
/// objc-method-decl:
|
|
/// objc-selector
|
|
/// objc-keyword-selector objc-parmlist[opt]
|
|
/// objc-type-name objc-selector
|
|
/// objc-type-name objc-keyword-selector objc-parmlist[opt]
|
|
///
|
|
/// objc-keyword-selector:
|
|
/// objc-keyword-decl
|
|
/// objc-keyword-selector objc-keyword-decl
|
|
///
|
|
/// objc-keyword-decl:
|
|
/// objc-selector ':' objc-type-name objc-keyword-attributes[opt] identifier
|
|
/// objc-selector ':' objc-keyword-attributes[opt] identifier
|
|
/// ':' objc-type-name objc-keyword-attributes[opt] identifier
|
|
/// ':' objc-keyword-attributes[opt] identifier
|
|
///
|
|
/// objc-parmlist:
|
|
/// objc-parms objc-ellipsis[opt]
|
|
///
|
|
/// objc-parms:
|
|
/// objc-parms , parameter-declaration
|
|
///
|
|
/// objc-ellipsis:
|
|
/// , ...
|
|
///
|
|
/// objc-keyword-attributes: [OBJC2]
|
|
/// __attribute__((unused))
|
|
///
|
|
Parser::DeclTy *Parser::ParseObjCMethodDecl(SourceLocation mLoc,
|
|
tok::TokenKind mType,
|
|
DeclTy *IDecl,
|
|
tok::ObjCKeywordKind MethodImplKind)
|
|
{
|
|
// Parse the return type if present.
|
|
TypeTy *ReturnType = 0;
|
|
ObjCDeclSpec DSRet;
|
|
if (Tok.is(tok::l_paren))
|
|
ReturnType = ParseObjCTypeName(DSRet);
|
|
|
|
SourceLocation selLoc;
|
|
IdentifierInfo *SelIdent = ParseObjCSelector(selLoc);
|
|
|
|
if (!SelIdent) { // missing selector name.
|
|
Diag(Tok, diag::err_expected_selector_for_method)
|
|
<< SourceRange(mLoc, Tok.getLocation());
|
|
// Skip until we get a ; or {}.
|
|
SkipUntil(tok::r_brace);
|
|
return 0;
|
|
}
|
|
|
|
if (Tok.isNot(tok::colon)) {
|
|
// If attributes exist after the method, parse them.
|
|
AttributeList *MethodAttrs = 0;
|
|
if (getLang().ObjC2 && Tok.is(tok::kw___attribute))
|
|
MethodAttrs = ParseAttributes();
|
|
|
|
Selector Sel = PP.getSelectorTable().getNullarySelector(SelIdent);
|
|
return Actions.ActOnMethodDeclaration(mLoc, Tok.getLocation(),
|
|
mType, IDecl, DSRet, ReturnType, Sel,
|
|
0, 0, 0, MethodAttrs, MethodImplKind);
|
|
}
|
|
|
|
llvm::SmallVector<IdentifierInfo *, 12> KeyIdents;
|
|
llvm::SmallVector<Action::TypeTy *, 12> KeyTypes;
|
|
llvm::SmallVector<ObjCDeclSpec, 12> ArgTypeQuals;
|
|
llvm::SmallVector<IdentifierInfo *, 12> ArgNames;
|
|
|
|
Action::TypeTy *TypeInfo;
|
|
while (1) {
|
|
KeyIdents.push_back(SelIdent);
|
|
|
|
// Each iteration parses a single keyword argument.
|
|
if (Tok.isNot(tok::colon)) {
|
|
Diag(Tok, diag::err_expected_colon);
|
|
break;
|
|
}
|
|
ConsumeToken(); // Eat the ':'.
|
|
ObjCDeclSpec DSType;
|
|
if (Tok.is(tok::l_paren)) // Parse the argument type.
|
|
TypeInfo = ParseObjCTypeName(DSType);
|
|
else
|
|
TypeInfo = 0;
|
|
KeyTypes.push_back(TypeInfo);
|
|
ArgTypeQuals.push_back(DSType);
|
|
|
|
// If attributes exist before the argument name, parse them.
|
|
if (getLang().ObjC2 && Tok.is(tok::kw___attribute))
|
|
ParseAttributes(); // FIXME: pass attributes through.
|
|
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident); // missing argument name.
|
|
break;
|
|
}
|
|
ArgNames.push_back(Tok.getIdentifierInfo());
|
|
ConsumeToken(); // Eat the identifier.
|
|
|
|
// Check for another keyword selector.
|
|
SourceLocation Loc;
|
|
SelIdent = ParseObjCSelector(Loc);
|
|
if (!SelIdent && Tok.isNot(tok::colon))
|
|
break;
|
|
// We have a selector or a colon, continue parsing.
|
|
}
|
|
|
|
bool isVariadic = false;
|
|
|
|
// Parse the (optional) parameter list.
|
|
while (Tok.is(tok::comma)) {
|
|
ConsumeToken();
|
|
if (Tok.is(tok::ellipsis)) {
|
|
isVariadic = true;
|
|
ConsumeToken();
|
|
break;
|
|
}
|
|
// FIXME: implement this...
|
|
// Parse the c-style argument declaration-specifier.
|
|
DeclSpec DS;
|
|
ParseDeclarationSpecifiers(DS);
|
|
// Parse the declarator.
|
|
Declarator ParmDecl(DS, Declarator::PrototypeContext);
|
|
ParseDeclarator(ParmDecl);
|
|
}
|
|
|
|
// FIXME: Add support for optional parmameter list...
|
|
// If attributes exist after the method, parse them.
|
|
AttributeList *MethodAttrs = 0;
|
|
if (getLang().ObjC2 && Tok.is(tok::kw___attribute))
|
|
MethodAttrs = ParseAttributes();
|
|
|
|
Selector Sel = PP.getSelectorTable().getSelector(KeyIdents.size(),
|
|
&KeyIdents[0]);
|
|
return Actions.ActOnMethodDeclaration(mLoc, Tok.getLocation(),
|
|
mType, IDecl, DSRet, ReturnType, Sel,
|
|
&ArgTypeQuals[0], &KeyTypes[0],
|
|
&ArgNames[0], MethodAttrs,
|
|
MethodImplKind, isVariadic);
|
|
}
|
|
|
|
/// objc-protocol-refs:
|
|
/// '<' identifier-list '>'
|
|
///
|
|
bool Parser::
|
|
ParseObjCProtocolReferences(llvm::SmallVectorImpl<Action::DeclTy*> &Protocols,
|
|
bool WarnOnDeclarations, SourceLocation &EndLoc) {
|
|
assert(Tok.is(tok::less) && "expected <");
|
|
|
|
ConsumeToken(); // the "<"
|
|
|
|
llvm::SmallVector<IdentifierLocPair, 8> ProtocolIdents;
|
|
|
|
while (1) {
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
SkipUntil(tok::greater);
|
|
return true;
|
|
}
|
|
ProtocolIdents.push_back(std::make_pair(Tok.getIdentifierInfo(),
|
|
Tok.getLocation()));
|
|
ConsumeToken();
|
|
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
ConsumeToken();
|
|
}
|
|
|
|
// Consume the '>'.
|
|
if (Tok.isNot(tok::greater)) {
|
|
Diag(Tok, diag::err_expected_greater);
|
|
return true;
|
|
}
|
|
|
|
EndLoc = ConsumeAnyToken();
|
|
|
|
// Convert the list of protocols identifiers into a list of protocol decls.
|
|
Actions.FindProtocolDeclaration(WarnOnDeclarations,
|
|
&ProtocolIdents[0], ProtocolIdents.size(),
|
|
Protocols);
|
|
return false;
|
|
}
|
|
|
|
/// objc-class-instance-variables:
|
|
/// '{' objc-instance-variable-decl-list[opt] '}'
|
|
///
|
|
/// objc-instance-variable-decl-list:
|
|
/// objc-visibility-spec
|
|
/// objc-instance-variable-decl ';'
|
|
/// ';'
|
|
/// objc-instance-variable-decl-list objc-visibility-spec
|
|
/// objc-instance-variable-decl-list objc-instance-variable-decl ';'
|
|
/// objc-instance-variable-decl-list ';'
|
|
///
|
|
/// objc-visibility-spec:
|
|
/// @private
|
|
/// @protected
|
|
/// @public
|
|
/// @package [OBJC2]
|
|
///
|
|
/// objc-instance-variable-decl:
|
|
/// struct-declaration
|
|
///
|
|
void Parser::ParseObjCClassInstanceVariables(DeclTy *interfaceDecl,
|
|
SourceLocation atLoc) {
|
|
assert(Tok.is(tok::l_brace) && "expected {");
|
|
llvm::SmallVector<DeclTy*, 32> AllIvarDecls;
|
|
llvm::SmallVector<FieldDeclarator, 8> FieldDeclarators;
|
|
|
|
SourceLocation LBraceLoc = ConsumeBrace(); // the "{"
|
|
|
|
tok::ObjCKeywordKind visibility = tok::objc_protected;
|
|
// While we still have something to read, read the instance variables.
|
|
while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) {
|
|
// Each iteration of this loop reads one objc-instance-variable-decl.
|
|
|
|
// Check for extraneous top-level semicolon.
|
|
if (Tok.is(tok::semi)) {
|
|
Diag(Tok, diag::ext_extra_struct_semi);
|
|
ConsumeToken();
|
|
continue;
|
|
}
|
|
|
|
// Set the default visibility to private.
|
|
if (Tok.is(tok::at)) { // parse objc-visibility-spec
|
|
ConsumeToken(); // eat the @ sign
|
|
switch (Tok.getObjCKeywordID()) {
|
|
case tok::objc_private:
|
|
case tok::objc_public:
|
|
case tok::objc_protected:
|
|
case tok::objc_package:
|
|
visibility = Tok.getObjCKeywordID();
|
|
ConsumeToken();
|
|
continue;
|
|
default:
|
|
Diag(Tok, diag::err_objc_illegal_visibility_spec);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
// Parse all the comma separated declarators.
|
|
DeclSpec DS;
|
|
FieldDeclarators.clear();
|
|
ParseStructDeclaration(DS, FieldDeclarators);
|
|
|
|
// Convert them all to fields.
|
|
for (unsigned i = 0, e = FieldDeclarators.size(); i != e; ++i) {
|
|
FieldDeclarator &FD = FieldDeclarators[i];
|
|
// Install the declarator into interfaceDecl.
|
|
DeclTy *Field = Actions.ActOnIvar(CurScope,
|
|
DS.getSourceRange().getBegin(),
|
|
FD.D, FD.BitfieldSize, visibility);
|
|
AllIvarDecls.push_back(Field);
|
|
}
|
|
|
|
if (Tok.is(tok::semi)) {
|
|
ConsumeToken();
|
|
} else {
|
|
Diag(Tok, diag::err_expected_semi_decl_list);
|
|
// Skip to end of block or statement
|
|
SkipUntil(tok::r_brace, true, true);
|
|
}
|
|
}
|
|
SourceLocation RBraceLoc = MatchRHSPunctuation(tok::r_brace, LBraceLoc);
|
|
// Call ActOnFields() even if we don't have any decls. This is useful
|
|
// for code rewriting tools that need to be aware of the empty list.
|
|
Actions.ActOnFields(CurScope, atLoc, interfaceDecl,
|
|
&AllIvarDecls[0], AllIvarDecls.size(),
|
|
LBraceLoc, RBraceLoc, 0);
|
|
return;
|
|
}
|
|
|
|
/// objc-protocol-declaration:
|
|
/// objc-protocol-definition
|
|
/// objc-protocol-forward-reference
|
|
///
|
|
/// objc-protocol-definition:
|
|
/// @protocol identifier
|
|
/// objc-protocol-refs[opt]
|
|
/// objc-interface-decl-list
|
|
/// @end
|
|
///
|
|
/// objc-protocol-forward-reference:
|
|
/// @protocol identifier-list ';'
|
|
///
|
|
/// "@protocol identifier ;" should be resolved as "@protocol
|
|
/// identifier-list ;": objc-interface-decl-list may not start with a
|
|
/// semicolon in the first alternative if objc-protocol-refs are omitted.
|
|
Parser::DeclTy *Parser::ParseObjCAtProtocolDeclaration(SourceLocation AtLoc,
|
|
AttributeList *attrList) {
|
|
assert(Tok.isObjCAtKeyword(tok::objc_protocol) &&
|
|
"ParseObjCAtProtocolDeclaration(): Expected @protocol");
|
|
ConsumeToken(); // the "protocol" identifier
|
|
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident); // missing protocol name.
|
|
return 0;
|
|
}
|
|
// Save the protocol name, then consume it.
|
|
IdentifierInfo *protocolName = Tok.getIdentifierInfo();
|
|
SourceLocation nameLoc = ConsumeToken();
|
|
|
|
if (Tok.is(tok::semi)) { // forward declaration of one protocol.
|
|
IdentifierLocPair ProtoInfo(protocolName, nameLoc);
|
|
ConsumeToken();
|
|
return Actions.ActOnForwardProtocolDeclaration(AtLoc, &ProtoInfo, 1);
|
|
}
|
|
|
|
if (Tok.is(tok::comma)) { // list of forward declarations.
|
|
llvm::SmallVector<IdentifierLocPair, 8> ProtocolRefs;
|
|
ProtocolRefs.push_back(std::make_pair(protocolName, nameLoc));
|
|
|
|
// Parse the list of forward declarations.
|
|
while (1) {
|
|
ConsumeToken(); // the ','
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
SkipUntil(tok::semi);
|
|
return 0;
|
|
}
|
|
ProtocolRefs.push_back(IdentifierLocPair(Tok.getIdentifierInfo(),
|
|
Tok.getLocation()));
|
|
ConsumeToken(); // the identifier
|
|
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
}
|
|
// Consume the ';'.
|
|
if (ExpectAndConsume(tok::semi, diag::err_expected_semi_after, "@protocol"))
|
|
return 0;
|
|
|
|
return Actions.ActOnForwardProtocolDeclaration(AtLoc,
|
|
&ProtocolRefs[0],
|
|
ProtocolRefs.size());
|
|
}
|
|
|
|
// Last, and definitely not least, parse a protocol declaration.
|
|
SourceLocation EndProtoLoc;
|
|
|
|
llvm::SmallVector<DeclTy *, 8> ProtocolRefs;
|
|
if (Tok.is(tok::less) &&
|
|
ParseObjCProtocolReferences(ProtocolRefs, true, EndProtoLoc))
|
|
return 0;
|
|
|
|
DeclTy *ProtoType =
|
|
Actions.ActOnStartProtocolInterface(AtLoc, protocolName, nameLoc,
|
|
&ProtocolRefs[0], ProtocolRefs.size(),
|
|
EndProtoLoc, attrList);
|
|
ParseObjCInterfaceDeclList(ProtoType, tok::objc_protocol);
|
|
return ProtoType;
|
|
}
|
|
|
|
/// objc-implementation:
|
|
/// objc-class-implementation-prologue
|
|
/// objc-category-implementation-prologue
|
|
///
|
|
/// objc-class-implementation-prologue:
|
|
/// @implementation identifier objc-superclass[opt]
|
|
/// objc-class-instance-variables[opt]
|
|
///
|
|
/// objc-category-implementation-prologue:
|
|
/// @implementation identifier ( identifier )
|
|
|
|
Parser::DeclTy *Parser::ParseObjCAtImplementationDeclaration(
|
|
SourceLocation atLoc) {
|
|
assert(Tok.isObjCAtKeyword(tok::objc_implementation) &&
|
|
"ParseObjCAtImplementationDeclaration(): Expected @implementation");
|
|
ConsumeToken(); // the "implementation" identifier
|
|
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident); // missing class or category name.
|
|
return 0;
|
|
}
|
|
// We have a class or category name - consume it.
|
|
IdentifierInfo *nameId = Tok.getIdentifierInfo();
|
|
SourceLocation nameLoc = ConsumeToken(); // consume class or category name
|
|
|
|
if (Tok.is(tok::l_paren)) {
|
|
// we have a category implementation.
|
|
SourceLocation lparenLoc = ConsumeParen();
|
|
SourceLocation categoryLoc, rparenLoc;
|
|
IdentifierInfo *categoryId = 0;
|
|
|
|
if (Tok.is(tok::identifier)) {
|
|
categoryId = Tok.getIdentifierInfo();
|
|
categoryLoc = ConsumeToken();
|
|
} else {
|
|
Diag(Tok, diag::err_expected_ident); // missing category name.
|
|
return 0;
|
|
}
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
Diag(Tok, diag::err_expected_rparen);
|
|
SkipUntil(tok::r_paren, false); // don't stop at ';'
|
|
return 0;
|
|
}
|
|
rparenLoc = ConsumeParen();
|
|
DeclTy *ImplCatType = Actions.ActOnStartCategoryImplementation(
|
|
atLoc, nameId, nameLoc, categoryId,
|
|
categoryLoc);
|
|
ObjCImpDecl = ImplCatType;
|
|
return 0;
|
|
}
|
|
// We have a class implementation
|
|
SourceLocation superClassLoc;
|
|
IdentifierInfo *superClassId = 0;
|
|
if (Tok.is(tok::colon)) {
|
|
// We have a super class
|
|
ConsumeToken();
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident); // missing super class name.
|
|
return 0;
|
|
}
|
|
superClassId = Tok.getIdentifierInfo();
|
|
superClassLoc = ConsumeToken(); // Consume super class name
|
|
}
|
|
DeclTy *ImplClsType = Actions.ActOnStartClassImplementation(
|
|
atLoc, nameId, nameLoc,
|
|
superClassId, superClassLoc);
|
|
|
|
if (Tok.is(tok::l_brace)) // we have ivars
|
|
ParseObjCClassInstanceVariables(ImplClsType/*FIXME*/, atLoc);
|
|
ObjCImpDecl = ImplClsType;
|
|
|
|
return 0;
|
|
}
|
|
|
|
Parser::DeclTy *Parser::ParseObjCAtEndDeclaration(SourceLocation atLoc) {
|
|
assert(Tok.isObjCAtKeyword(tok::objc_end) &&
|
|
"ParseObjCAtEndDeclaration(): Expected @end");
|
|
ConsumeToken(); // the "end" identifier
|
|
if (ObjCImpDecl)
|
|
Actions.ActOnAtEnd(atLoc, ObjCImpDecl);
|
|
else
|
|
Diag(atLoc, diag::warn_expected_implementation); // missing @implementation
|
|
return ObjCImpDecl;
|
|
}
|
|
|
|
/// compatibility-alias-decl:
|
|
/// @compatibility_alias alias-name class-name ';'
|
|
///
|
|
Parser::DeclTy *Parser::ParseObjCAtAliasDeclaration(SourceLocation atLoc) {
|
|
assert(Tok.isObjCAtKeyword(tok::objc_compatibility_alias) &&
|
|
"ParseObjCAtAliasDeclaration(): Expected @compatibility_alias");
|
|
ConsumeToken(); // consume compatibility_alias
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
return 0;
|
|
}
|
|
IdentifierInfo *aliasId = Tok.getIdentifierInfo();
|
|
SourceLocation aliasLoc = ConsumeToken(); // consume alias-name
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
return 0;
|
|
}
|
|
IdentifierInfo *classId = Tok.getIdentifierInfo();
|
|
SourceLocation classLoc = ConsumeToken(); // consume class-name;
|
|
if (Tok.isNot(tok::semi)) {
|
|
Diag(Tok, diag::err_expected_semi_after) << "@compatibility_alias";
|
|
return 0;
|
|
}
|
|
DeclTy *ClsType = Actions.ActOnCompatiblityAlias(atLoc,
|
|
aliasId, aliasLoc,
|
|
classId, classLoc);
|
|
return ClsType;
|
|
}
|
|
|
|
/// property-synthesis:
|
|
/// @synthesize property-ivar-list ';'
|
|
///
|
|
/// property-ivar-list:
|
|
/// property-ivar
|
|
/// property-ivar-list ',' property-ivar
|
|
///
|
|
/// property-ivar:
|
|
/// identifier
|
|
/// identifier '=' identifier
|
|
///
|
|
Parser::DeclTy *Parser::ParseObjCPropertySynthesize(SourceLocation atLoc) {
|
|
assert(Tok.isObjCAtKeyword(tok::objc_synthesize) &&
|
|
"ParseObjCPropertyDynamic(): Expected '@synthesize'");
|
|
SourceLocation loc = ConsumeToken(); // consume synthesize
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
return 0;
|
|
}
|
|
while (Tok.is(tok::identifier)) {
|
|
IdentifierInfo *propertyIvar = 0;
|
|
IdentifierInfo *propertyId = Tok.getIdentifierInfo();
|
|
SourceLocation propertyLoc = ConsumeToken(); // consume property name
|
|
if (Tok.is(tok::equal)) {
|
|
// property '=' ivar-name
|
|
ConsumeToken(); // consume '='
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
break;
|
|
}
|
|
propertyIvar = Tok.getIdentifierInfo();
|
|
ConsumeToken(); // consume ivar-name
|
|
}
|
|
Actions.ActOnPropertyImplDecl(atLoc, propertyLoc, true, ObjCImpDecl,
|
|
propertyId, propertyIvar);
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
ConsumeToken(); // consume ','
|
|
}
|
|
if (Tok.isNot(tok::semi))
|
|
Diag(Tok, diag::err_expected_semi_after) << "@synthesize";
|
|
return 0;
|
|
}
|
|
|
|
/// property-dynamic:
|
|
/// @dynamic property-list
|
|
///
|
|
/// property-list:
|
|
/// identifier
|
|
/// property-list ',' identifier
|
|
///
|
|
Parser::DeclTy *Parser::ParseObjCPropertyDynamic(SourceLocation atLoc) {
|
|
assert(Tok.isObjCAtKeyword(tok::objc_dynamic) &&
|
|
"ParseObjCPropertyDynamic(): Expected '@dynamic'");
|
|
SourceLocation loc = ConsumeToken(); // consume dynamic
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_ident);
|
|
return 0;
|
|
}
|
|
while (Tok.is(tok::identifier)) {
|
|
IdentifierInfo *propertyId = Tok.getIdentifierInfo();
|
|
SourceLocation propertyLoc = ConsumeToken(); // consume property name
|
|
Actions.ActOnPropertyImplDecl(atLoc, propertyLoc, false, ObjCImpDecl,
|
|
propertyId, 0);
|
|
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
ConsumeToken(); // consume ','
|
|
}
|
|
if (Tok.isNot(tok::semi))
|
|
Diag(Tok, diag::err_expected_semi_after) << "@dynamic";
|
|
return 0;
|
|
}
|
|
|
|
/// objc-throw-statement:
|
|
/// throw expression[opt];
|
|
///
|
|
Parser::StmtResult Parser::ParseObjCThrowStmt(SourceLocation atLoc) {
|
|
ExprResult Res;
|
|
ConsumeToken(); // consume throw
|
|
if (Tok.isNot(tok::semi)) {
|
|
Res = ParseExpression();
|
|
if (Res.isInvalid) {
|
|
SkipUntil(tok::semi);
|
|
return true;
|
|
}
|
|
}
|
|
ConsumeToken(); // consume ';'
|
|
return Actions.ActOnObjCAtThrowStmt(atLoc, Res.Val);
|
|
}
|
|
|
|
/// objc-synchronized-statement:
|
|
/// @synchronized '(' expression ')' compound-statement
|
|
///
|
|
Parser::StmtResult Parser::ParseObjCSynchronizedStmt(SourceLocation atLoc) {
|
|
ConsumeToken(); // consume synchronized
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
Diag(Tok, diag::err_expected_lparen_after) << "@synchronized";
|
|
return true;
|
|
}
|
|
ConsumeParen(); // '('
|
|
ExprResult Res = ParseExpression();
|
|
if (Res.isInvalid) {
|
|
SkipUntil(tok::semi);
|
|
return true;
|
|
}
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
Diag(Tok, diag::err_expected_lbrace);
|
|
return true;
|
|
}
|
|
ConsumeParen(); // ')'
|
|
if (Tok.isNot(tok::l_brace)) {
|
|
Diag(Tok, diag::err_expected_lbrace);
|
|
return true;
|
|
}
|
|
// Enter a scope to hold everything within the compound stmt. Compound
|
|
// statements can always hold declarations.
|
|
EnterScope(Scope::DeclScope);
|
|
|
|
StmtResult SynchBody = ParseCompoundStatementBody();
|
|
|
|
ExitScope();
|
|
if (SynchBody.isInvalid)
|
|
SynchBody = Actions.ActOnNullStmt(Tok.getLocation());
|
|
return Actions.ActOnObjCAtSynchronizedStmt(atLoc, Res.Val, SynchBody.Val);
|
|
}
|
|
|
|
/// objc-try-catch-statement:
|
|
/// @try compound-statement objc-catch-list[opt]
|
|
/// @try compound-statement objc-catch-list[opt] @finally compound-statement
|
|
///
|
|
/// objc-catch-list:
|
|
/// @catch ( parameter-declaration ) compound-statement
|
|
/// objc-catch-list @catch ( catch-parameter-declaration ) compound-statement
|
|
/// catch-parameter-declaration:
|
|
/// parameter-declaration
|
|
/// '...' [OBJC2]
|
|
///
|
|
Parser::StmtResult Parser::ParseObjCTryStmt(SourceLocation atLoc) {
|
|
bool catch_or_finally_seen = false;
|
|
|
|
ConsumeToken(); // consume try
|
|
if (Tok.isNot(tok::l_brace)) {
|
|
Diag(Tok, diag::err_expected_lbrace);
|
|
return true;
|
|
}
|
|
StmtResult CatchStmts;
|
|
StmtResult FinallyStmt;
|
|
EnterScope(Scope::DeclScope);
|
|
StmtResult TryBody = ParseCompoundStatementBody();
|
|
ExitScope();
|
|
if (TryBody.isInvalid)
|
|
TryBody = Actions.ActOnNullStmt(Tok.getLocation());
|
|
|
|
while (Tok.is(tok::at)) {
|
|
// At this point, we need to lookahead to determine if this @ is the start
|
|
// of an @catch or @finally. We don't want to consume the @ token if this
|
|
// is an @try or @encode or something else.
|
|
Token AfterAt = GetLookAheadToken(1);
|
|
if (!AfterAt.isObjCAtKeyword(tok::objc_catch) &&
|
|
!AfterAt.isObjCAtKeyword(tok::objc_finally))
|
|
break;
|
|
|
|
SourceLocation AtCatchFinallyLoc = ConsumeToken();
|
|
if (Tok.isObjCAtKeyword(tok::objc_catch)) {
|
|
StmtTy *FirstPart = 0;
|
|
ConsumeToken(); // consume catch
|
|
if (Tok.is(tok::l_paren)) {
|
|
ConsumeParen();
|
|
EnterScope(Scope::DeclScope);
|
|
if (Tok.isNot(tok::ellipsis)) {
|
|
DeclSpec DS;
|
|
ParseDeclarationSpecifiers(DS);
|
|
// For some odd reason, the name of the exception variable is
|
|
// optional. As a result, we need to use PrototypeContext.
|
|
Declarator DeclaratorInfo(DS, Declarator::PrototypeContext);
|
|
ParseDeclarator(DeclaratorInfo);
|
|
if (DeclaratorInfo.getIdentifier()) {
|
|
DeclTy *aBlockVarDecl = Actions.ActOnDeclarator(CurScope,
|
|
DeclaratorInfo, 0);
|
|
StmtResult stmtResult =
|
|
Actions.ActOnDeclStmt(aBlockVarDecl,
|
|
DS.getSourceRange().getBegin(),
|
|
DeclaratorInfo.getSourceRange().getEnd());
|
|
FirstPart = stmtResult.isInvalid ? 0 : stmtResult.Val;
|
|
}
|
|
} else
|
|
ConsumeToken(); // consume '...'
|
|
SourceLocation RParenLoc = ConsumeParen();
|
|
|
|
StmtResult CatchBody(true);
|
|
if (Tok.is(tok::l_brace))
|
|
CatchBody = ParseCompoundStatementBody();
|
|
else
|
|
Diag(Tok, diag::err_expected_lbrace);
|
|
if (CatchBody.isInvalid)
|
|
CatchBody = Actions.ActOnNullStmt(Tok.getLocation());
|
|
CatchStmts = Actions.ActOnObjCAtCatchStmt(AtCatchFinallyLoc, RParenLoc,
|
|
FirstPart, CatchBody.Val, CatchStmts.Val);
|
|
ExitScope();
|
|
} else {
|
|
Diag(AtCatchFinallyLoc, diag::err_expected_lparen_after)
|
|
<< "@catch clause";
|
|
return true;
|
|
}
|
|
catch_or_finally_seen = true;
|
|
} else {
|
|
assert(Tok.isObjCAtKeyword(tok::objc_finally) && "Lookahead confused?");
|
|
ConsumeToken(); // consume finally
|
|
EnterScope(Scope::DeclScope);
|
|
|
|
|
|
StmtResult FinallyBody(true);
|
|
if (Tok.is(tok::l_brace))
|
|
FinallyBody = ParseCompoundStatementBody();
|
|
else
|
|
Diag(Tok, diag::err_expected_lbrace);
|
|
if (FinallyBody.isInvalid)
|
|
FinallyBody = Actions.ActOnNullStmt(Tok.getLocation());
|
|
FinallyStmt = Actions.ActOnObjCAtFinallyStmt(AtCatchFinallyLoc,
|
|
FinallyBody.Val);
|
|
catch_or_finally_seen = true;
|
|
ExitScope();
|
|
break;
|
|
}
|
|
}
|
|
if (!catch_or_finally_seen) {
|
|
Diag(atLoc, diag::err_missing_catch_finally);
|
|
return true;
|
|
}
|
|
return Actions.ActOnObjCAtTryStmt(atLoc, TryBody.Val, CatchStmts.Val,
|
|
FinallyStmt.Val);
|
|
}
|
|
|
|
/// objc-method-def: objc-method-proto ';'[opt] '{' body '}'
|
|
///
|
|
Parser::DeclTy *Parser::ParseObjCMethodDefinition() {
|
|
DeclTy *MDecl = ParseObjCMethodPrototype(ObjCImpDecl);
|
|
// parse optional ';'
|
|
if (Tok.is(tok::semi))
|
|
ConsumeToken();
|
|
|
|
// We should have an opening brace now.
|
|
if (Tok.isNot(tok::l_brace)) {
|
|
Diag(Tok, diag::err_expected_method_body);
|
|
|
|
// Skip over garbage, until we get to '{'. Don't eat the '{'.
|
|
SkipUntil(tok::l_brace, true, true);
|
|
|
|
// If we didn't find the '{', bail out.
|
|
if (Tok.isNot(tok::l_brace))
|
|
return 0;
|
|
}
|
|
SourceLocation BraceLoc = Tok.getLocation();
|
|
|
|
// Enter a scope for the method body.
|
|
EnterScope(Scope::FnScope|Scope::DeclScope);
|
|
|
|
// Tell the actions module that we have entered a method definition with the
|
|
// specified Declarator for the method.
|
|
Actions.ObjCActOnStartOfMethodDef(CurScope, MDecl);
|
|
|
|
StmtResult FnBody = ParseCompoundStatementBody();
|
|
|
|
// If the function body could not be parsed, make a bogus compoundstmt.
|
|
if (FnBody.isInvalid)
|
|
FnBody = Actions.ActOnCompoundStmt(BraceLoc, BraceLoc, 0, 0, false);
|
|
|
|
// Leave the function body scope.
|
|
ExitScope();
|
|
|
|
// TODO: Pass argument information.
|
|
Actions.ActOnFinishFunctionBody(MDecl, FnBody.Val);
|
|
return MDecl;
|
|
}
|
|
|
|
Parser::StmtResult Parser::ParseObjCAtStatement(SourceLocation AtLoc) {
|
|
if (Tok.isObjCAtKeyword(tok::objc_try)) {
|
|
return ParseObjCTryStmt(AtLoc);
|
|
} else if (Tok.isObjCAtKeyword(tok::objc_throw))
|
|
return ParseObjCThrowStmt(AtLoc);
|
|
else if (Tok.isObjCAtKeyword(tok::objc_synchronized))
|
|
return ParseObjCSynchronizedStmt(AtLoc);
|
|
ExprResult Res = ParseExpressionWithLeadingAt(AtLoc);
|
|
if (Res.isInvalid) {
|
|
// If the expression is invalid, skip ahead to the next semicolon. Not
|
|
// doing this opens us up to the possibility of infinite loops if
|
|
// ParseExpression does not consume any tokens.
|
|
SkipUntil(tok::semi);
|
|
return true;
|
|
}
|
|
// Otherwise, eat the semicolon.
|
|
ExpectAndConsume(tok::semi, diag::err_expected_semi_after_expr);
|
|
return Actions.ActOnExprStmt(Res.Val);
|
|
}
|
|
|
|
Parser::ExprResult Parser::ParseObjCAtExpression(SourceLocation AtLoc) {
|
|
switch (Tok.getKind()) {
|
|
case tok::string_literal: // primary-expression: string-literal
|
|
case tok::wide_string_literal:
|
|
return ParsePostfixExpressionSuffix(ParseObjCStringLiteral(AtLoc));
|
|
default:
|
|
if (Tok.getIdentifierInfo() == 0)
|
|
return Diag(AtLoc, diag::err_unexpected_at);
|
|
|
|
switch (Tok.getIdentifierInfo()->getObjCKeywordID()) {
|
|
case tok::objc_encode:
|
|
return ParsePostfixExpressionSuffix(ParseObjCEncodeExpression(AtLoc));
|
|
case tok::objc_protocol:
|
|
return ParsePostfixExpressionSuffix(ParseObjCProtocolExpression(AtLoc));
|
|
case tok::objc_selector:
|
|
return ParsePostfixExpressionSuffix(ParseObjCSelectorExpression(AtLoc));
|
|
default:
|
|
return Diag(AtLoc, diag::err_unexpected_at);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// objc-message-expr:
|
|
/// '[' objc-receiver objc-message-args ']'
|
|
///
|
|
/// objc-receiver:
|
|
/// expression
|
|
/// class-name
|
|
/// type-name
|
|
Parser::ExprResult Parser::ParseObjCMessageExpression() {
|
|
assert(Tok.is(tok::l_square) && "'[' expected");
|
|
SourceLocation LBracLoc = ConsumeBracket(); // consume '['
|
|
|
|
// Parse receiver
|
|
if (isTokObjCMessageIdentifierReceiver()) {
|
|
IdentifierInfo *ReceiverName = Tok.getIdentifierInfo();
|
|
ConsumeToken();
|
|
return ParseObjCMessageExpressionBody(LBracLoc, ReceiverName, 0);
|
|
}
|
|
|
|
ExprResult Res = ParseExpression();
|
|
if (Res.isInvalid) {
|
|
SkipUntil(tok::r_square);
|
|
return Res;
|
|
}
|
|
|
|
return ParseObjCMessageExpressionBody(LBracLoc, 0, Res.Val);
|
|
}
|
|
|
|
/// ParseObjCMessageExpressionBody - Having parsed "'[' objc-receiver", parse
|
|
/// the rest of a message expression.
|
|
///
|
|
/// objc-message-args:
|
|
/// objc-selector
|
|
/// objc-keywordarg-list
|
|
///
|
|
/// objc-keywordarg-list:
|
|
/// objc-keywordarg
|
|
/// objc-keywordarg-list objc-keywordarg
|
|
///
|
|
/// objc-keywordarg:
|
|
/// selector-name[opt] ':' objc-keywordexpr
|
|
///
|
|
/// objc-keywordexpr:
|
|
/// nonempty-expr-list
|
|
///
|
|
/// nonempty-expr-list:
|
|
/// assignment-expression
|
|
/// nonempty-expr-list , assignment-expression
|
|
///
|
|
Parser::ExprResult
|
|
Parser::ParseObjCMessageExpressionBody(SourceLocation LBracLoc,
|
|
IdentifierInfo *ReceiverName,
|
|
ExprTy *ReceiverExpr) {
|
|
// Parse objc-selector
|
|
SourceLocation Loc;
|
|
IdentifierInfo *selIdent = ParseObjCSelector(Loc);
|
|
|
|
llvm::SmallVector<IdentifierInfo *, 12> KeyIdents;
|
|
llvm::SmallVector<Action::ExprTy *, 12> KeyExprs;
|
|
|
|
if (Tok.is(tok::colon)) {
|
|
while (1) {
|
|
// Each iteration parses a single keyword argument.
|
|
KeyIdents.push_back(selIdent);
|
|
|
|
if (Tok.isNot(tok::colon)) {
|
|
Diag(Tok, diag::err_expected_colon);
|
|
// We must manually skip to a ']', otherwise the expression skipper will
|
|
// stop at the ']' when it skips to the ';'. We want it to skip beyond
|
|
// the enclosing expression.
|
|
SkipUntil(tok::r_square);
|
|
return true;
|
|
}
|
|
|
|
ConsumeToken(); // Eat the ':'.
|
|
/// Parse the expression after ':'
|
|
ExprResult Res = ParseAssignmentExpression();
|
|
if (Res.isInvalid) {
|
|
// We must manually skip to a ']', otherwise the expression skipper will
|
|
// stop at the ']' when it skips to the ';'. We want it to skip beyond
|
|
// the enclosing expression.
|
|
SkipUntil(tok::r_square);
|
|
return Res;
|
|
}
|
|
|
|
// We have a valid expression.
|
|
KeyExprs.push_back(Res.Val);
|
|
|
|
// Check for another keyword selector.
|
|
selIdent = ParseObjCSelector(Loc);
|
|
if (!selIdent && Tok.isNot(tok::colon))
|
|
break;
|
|
// We have a selector or a colon, continue parsing.
|
|
}
|
|
// Parse the, optional, argument list, comma separated.
|
|
while (Tok.is(tok::comma)) {
|
|
ConsumeToken(); // Eat the ','.
|
|
/// Parse the expression after ','
|
|
ExprResult Res = ParseAssignmentExpression();
|
|
if (Res.isInvalid) {
|
|
// We must manually skip to a ']', otherwise the expression skipper will
|
|
// stop at the ']' when it skips to the ';'. We want it to skip beyond
|
|
// the enclosing expression.
|
|
SkipUntil(tok::r_square);
|
|
return Res;
|
|
}
|
|
|
|
// We have a valid expression.
|
|
KeyExprs.push_back(Res.Val);
|
|
}
|
|
} else if (!selIdent) {
|
|
Diag(Tok, diag::err_expected_ident); // missing selector name.
|
|
|
|
// We must manually skip to a ']', otherwise the expression skipper will
|
|
// stop at the ']' when it skips to the ';'. We want it to skip beyond
|
|
// the enclosing expression.
|
|
SkipUntil(tok::r_square);
|
|
return true;
|
|
}
|
|
|
|
if (Tok.isNot(tok::r_square)) {
|
|
Diag(Tok, diag::err_expected_rsquare);
|
|
// We must manually skip to a ']', otherwise the expression skipper will
|
|
// stop at the ']' when it skips to the ';'. We want it to skip beyond
|
|
// the enclosing expression.
|
|
SkipUntil(tok::r_square);
|
|
return true;
|
|
}
|
|
|
|
SourceLocation RBracLoc = ConsumeBracket(); // consume ']'
|
|
|
|
unsigned nKeys = KeyIdents.size();
|
|
if (nKeys == 0)
|
|
KeyIdents.push_back(selIdent);
|
|
Selector Sel = PP.getSelectorTable().getSelector(nKeys, &KeyIdents[0]);
|
|
|
|
// We've just parsed a keyword message.
|
|
if (ReceiverName)
|
|
return Actions.ActOnClassMessage(CurScope,
|
|
ReceiverName, Sel, LBracLoc, RBracLoc,
|
|
&KeyExprs[0], KeyExprs.size());
|
|
return Actions.ActOnInstanceMessage(ReceiverExpr, Sel, LBracLoc, RBracLoc,
|
|
&KeyExprs[0], KeyExprs.size());
|
|
}
|
|
|
|
Parser::ExprResult Parser::ParseObjCStringLiteral(SourceLocation AtLoc) {
|
|
ExprResult Res = ParseStringLiteralExpression();
|
|
if (Res.isInvalid) return Res;
|
|
|
|
// @"foo" @"bar" is a valid concatenated string. Eat any subsequent string
|
|
// expressions. At this point, we know that the only valid thing that starts
|
|
// with '@' is an @"".
|
|
llvm::SmallVector<SourceLocation, 4> AtLocs;
|
|
llvm::SmallVector<ExprTy*, 4> AtStrings;
|
|
AtLocs.push_back(AtLoc);
|
|
AtStrings.push_back(Res.Val);
|
|
|
|
while (Tok.is(tok::at)) {
|
|
AtLocs.push_back(ConsumeToken()); // eat the @.
|
|
|
|
ExprResult Res(true); // Invalid unless there is a string literal.
|
|
if (isTokenStringLiteral())
|
|
Res = ParseStringLiteralExpression();
|
|
else
|
|
Diag(Tok, diag::err_objc_concat_string);
|
|
|
|
if (Res.isInvalid) {
|
|
while (!AtStrings.empty()) {
|
|
Actions.DeleteExpr(AtStrings.back());
|
|
AtStrings.pop_back();
|
|
}
|
|
return Res;
|
|
}
|
|
|
|
AtStrings.push_back(Res.Val);
|
|
}
|
|
|
|
return Actions.ParseObjCStringLiteral(&AtLocs[0], &AtStrings[0],
|
|
AtStrings.size());
|
|
}
|
|
|
|
/// objc-encode-expression:
|
|
/// @encode ( type-name )
|
|
Parser::ExprResult Parser::ParseObjCEncodeExpression(SourceLocation AtLoc) {
|
|
assert(Tok.isObjCAtKeyword(tok::objc_encode) && "Not an @encode expression!");
|
|
|
|
SourceLocation EncLoc = ConsumeToken();
|
|
|
|
if (Tok.isNot(tok::l_paren))
|
|
return Diag(Tok, diag::err_expected_lparen_after) << "@encode";
|
|
|
|
SourceLocation LParenLoc = ConsumeParen();
|
|
|
|
TypeTy *Ty = ParseTypeName();
|
|
|
|
SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc);
|
|
|
|
return Actions.ParseObjCEncodeExpression(AtLoc, EncLoc, LParenLoc, Ty,
|
|
RParenLoc);
|
|
}
|
|
|
|
/// objc-protocol-expression
|
|
/// @protocol ( protocol-name )
|
|
|
|
Parser::ExprResult Parser::ParseObjCProtocolExpression(SourceLocation AtLoc) {
|
|
SourceLocation ProtoLoc = ConsumeToken();
|
|
|
|
if (Tok.isNot(tok::l_paren))
|
|
return Diag(Tok, diag::err_expected_lparen_after) << "@protocol";
|
|
|
|
SourceLocation LParenLoc = ConsumeParen();
|
|
|
|
if (Tok.isNot(tok::identifier))
|
|
return Diag(Tok, diag::err_expected_ident);
|
|
|
|
IdentifierInfo *protocolId = Tok.getIdentifierInfo();
|
|
ConsumeToken();
|
|
|
|
SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc);
|
|
|
|
return Actions.ParseObjCProtocolExpression(protocolId, AtLoc, ProtoLoc,
|
|
LParenLoc, RParenLoc);
|
|
}
|
|
|
|
/// objc-selector-expression
|
|
/// @selector '(' objc-keyword-selector ')'
|
|
Parser::ExprResult Parser::ParseObjCSelectorExpression(SourceLocation AtLoc) {
|
|
SourceLocation SelectorLoc = ConsumeToken();
|
|
|
|
if (Tok.isNot(tok::l_paren))
|
|
return Diag(Tok, diag::err_expected_lparen_after) << "@selector";
|
|
|
|
llvm::SmallVector<IdentifierInfo *, 12> KeyIdents;
|
|
SourceLocation LParenLoc = ConsumeParen();
|
|
SourceLocation sLoc;
|
|
IdentifierInfo *SelIdent = ParseObjCSelector(sLoc);
|
|
if (!SelIdent && Tok.isNot(tok::colon))
|
|
return Diag(Tok, diag::err_expected_ident); // missing selector name.
|
|
|
|
KeyIdents.push_back(SelIdent);
|
|
unsigned nColons = 0;
|
|
if (Tok.isNot(tok::r_paren)) {
|
|
while (1) {
|
|
if (Tok.isNot(tok::colon))
|
|
return Diag(Tok, diag::err_expected_colon);
|
|
|
|
nColons++;
|
|
ConsumeToken(); // Eat the ':'.
|
|
if (Tok.is(tok::r_paren))
|
|
break;
|
|
// Check for another keyword selector.
|
|
SourceLocation Loc;
|
|
SelIdent = ParseObjCSelector(Loc);
|
|
KeyIdents.push_back(SelIdent);
|
|
if (!SelIdent && Tok.isNot(tok::colon))
|
|
break;
|
|
}
|
|
}
|
|
SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc);
|
|
Selector Sel = PP.getSelectorTable().getSelector(nColons, &KeyIdents[0]);
|
|
return Actions.ParseObjCSelectorExpression(Sel, AtLoc, SelectorLoc, LParenLoc,
|
|
RParenLoc);
|
|
}
|