| //===--- ParseObjc.cpp - Objective C Parsing ------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file was developed by Steve Naroff and is distributed under |
| // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the Objective-C portions of the Parser interface. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Parse/Parser.h" |
| #include "clang/Parse/DeclSpec.h" |
| #include "clang/Parse/Scope.h" |
| #include "clang/Basic/Diagnostic.h" |
| #include "llvm/ADT/SmallVector.h" |
| using namespace clang; |
| |
| |
| /// ParseExternalDeclaration: |
| /// external-declaration: [C99 6.9] |
| /// [OBJC] objc-class-definition |
| /// [OBJC] objc-class-declaration |
| /// [OBJC] objc-alias-declaration |
| /// [OBJC] objc-protocol-definition |
| /// [OBJC] objc-method-definition |
| /// [OBJC] '@' 'end' |
| Parser::DeclTy *Parser::ParseObjCAtDirectives() { |
| SourceLocation AtLoc = ConsumeToken(); // the "@" |
| |
| switch (Tok.getObjCKeywordID()) { |
| case tok::objc_class: |
| return ParseObjCAtClassDeclaration(AtLoc); |
| case tok::objc_interface: |
| return ParseObjCAtInterfaceDeclaration(AtLoc); |
| case tok::objc_protocol: |
| return ParseObjCAtProtocolDeclaration(AtLoc); |
| case tok::objc_implementation: |
| return ParseObjCAtImplementationDeclaration(AtLoc); |
| case tok::objc_end: |
| return ParseObjCAtEndDeclaration(AtLoc); |
| case tok::objc_compatibility_alias: |
| return ParseObjCAtAliasDeclaration(AtLoc); |
| case tok::objc_synthesize: |
| return ParseObjCPropertySynthesize(AtLoc); |
| case tok::objc_dynamic: |
| return ParseObjCPropertyDynamic(AtLoc); |
| default: |
| Diag(AtLoc, diag::err_unexpected_at); |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| } |
| |
| /// |
| /// objc-class-declaration: |
| /// '@' 'class' identifier-list ';' |
| /// |
| Parser::DeclTy *Parser::ParseObjCAtClassDeclaration(SourceLocation atLoc) { |
| ConsumeToken(); // the identifier "class" |
| llvm::SmallVector<IdentifierInfo *, 8> ClassNames; |
| |
| while (1) { |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| ClassNames.push_back(Tok.getIdentifierInfo()); |
| ConsumeToken(); |
| |
| if (Tok.isNot(tok::comma)) |
| break; |
| |
| ConsumeToken(); |
| } |
| |
| // Consume the ';'. |
| if (ExpectAndConsume(tok::semi, diag::err_expected_semi_after, "@class")) |
| return 0; |
| |
| return Actions.ActOnForwardClassDeclaration(atLoc, |
| &ClassNames[0], ClassNames.size()); |
| } |
| |
| /// |
| /// objc-interface: |
| /// objc-class-interface-attributes[opt] objc-class-interface |
| /// objc-category-interface |
| /// |
| /// objc-class-interface: |
| /// '@' 'interface' identifier objc-superclass[opt] |
| /// objc-protocol-refs[opt] |
| /// objc-class-instance-variables[opt] |
| /// objc-interface-decl-list |
| /// @end |
| /// |
| /// objc-category-interface: |
| /// '@' 'interface' identifier '(' identifier[opt] ')' |
| /// objc-protocol-refs[opt] |
| /// objc-interface-decl-list |
| /// @end |
| /// |
| /// objc-superclass: |
| /// ':' identifier |
| /// |
| /// objc-class-interface-attributes: |
| /// __attribute__((visibility("default"))) |
| /// __attribute__((visibility("hidden"))) |
| /// __attribute__((deprecated)) |
| /// __attribute__((unavailable)) |
| /// __attribute__((objc_exception)) - used by NSException on 64-bit |
| /// |
| Parser::DeclTy *Parser::ParseObjCAtInterfaceDeclaration( |
| SourceLocation atLoc, AttributeList *attrList) { |
| assert(Tok.isObjCAtKeyword(tok::objc_interface) && |
| "ParseObjCAtInterfaceDeclaration(): Expected @interface"); |
| ConsumeToken(); // the "interface" 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(); |
| |
| if (Tok.is(tok::l_paren)) { // we have a category. |
| SourceLocation lparenLoc = ConsumeParen(); |
| SourceLocation categoryLoc, rparenLoc; |
| IdentifierInfo *categoryId = 0; |
| llvm::SmallVector<IdentifierInfo *, 8> ProtocolRefs; |
| |
| // For ObjC2, the category name is optional (not an error). |
| if (Tok.is(tok::identifier)) { |
| categoryId = Tok.getIdentifierInfo(); |
| categoryLoc = ConsumeToken(); |
| } else if (!getLang().ObjC2) { |
| 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(); |
| SourceLocation endProtoLoc; |
| // Next, we need to check for any protocol references. |
| if (Tok.is(tok::less)) { |
| if (ParseObjCProtocolReferences(ProtocolRefs, endProtoLoc)) |
| return 0; |
| } |
| if (attrList) // categories don't support attributes. |
| Diag(Tok, diag::err_objc_no_attributes_on_category); |
| |
| DeclTy *CategoryType = Actions.ActOnStartCategoryInterface(atLoc, |
| nameId, nameLoc, categoryId, categoryLoc, |
| &ProtocolRefs[0], ProtocolRefs.size(), |
| endProtoLoc); |
| |
| ParseObjCInterfaceDeclList(CategoryType, tok::objc_not_keyword); |
| |
| // The @ sign was already consumed by ParseObjCInterfaceDeclList(). |
| if (Tok.isObjCAtKeyword(tok::objc_end)) { |
| ConsumeToken(); // the "end" identifier |
| return CategoryType; |
| } |
| Diag(Tok, diag::err_objc_missing_end); |
| return 0; |
| } |
| // Parse a class interface. |
| IdentifierInfo *superClassId = 0; |
| SourceLocation superClassLoc; |
| |
| if (Tok.is(tok::colon)) { // a super class is specified. |
| ConsumeToken(); |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); // missing super class name. |
| return 0; |
| } |
| superClassId = Tok.getIdentifierInfo(); |
| superClassLoc = ConsumeToken(); |
| } |
| // Next, we need to check for any protocol references. |
| llvm::SmallVector<IdentifierInfo *, 8> ProtocolRefs; |
| SourceLocation endProtoLoc; |
| if (Tok.is(tok::less)) { |
| if (ParseObjCProtocolReferences(ProtocolRefs, endProtoLoc)) |
| return 0; |
| } |
| DeclTy *ClsType = Actions.ActOnStartClassInterface( |
| atLoc, nameId, nameLoc, |
| superClassId, superClassLoc, &ProtocolRefs[0], |
| ProtocolRefs.size(), endProtoLoc, attrList); |
| |
| if (Tok.is(tok::l_brace)) |
| ParseObjCClassInstanceVariables(ClsType, atLoc); |
| |
| ParseObjCInterfaceDeclList(ClsType, tok::objc_interface); |
| |
| // The @ sign was already consumed by ParseObjCInterfaceDeclList(). |
| if (Tok.isObjCAtKeyword(tok::objc_end)) { |
| ConsumeToken(); // the "end" identifier |
| return ClsType; |
| } |
| Diag(Tok, diag::err_objc_missing_end); |
| return 0; |
| } |
| |
| /// objc-interface-decl-list: |
| /// empty |
| /// objc-interface-decl-list objc-property-decl [OBJC2] |
| /// objc-interface-decl-list objc-method-requirement [OBJC2] |
| /// objc-interface-decl-list objc-method-proto ';' |
| /// objc-interface-decl-list declaration |
| /// objc-interface-decl-list ';' |
| /// |
| /// objc-method-requirement: [OBJC2] |
| /// @required |
| /// @optional |
| /// |
| void Parser::ParseObjCInterfaceDeclList(DeclTy *interfaceDecl, |
| tok::ObjCKeywordKind contextKey) { |
| llvm::SmallVector<DeclTy*, 32> allMethods; |
| llvm::SmallVector<DeclTy*, 16> allProperties; |
| tok::ObjCKeywordKind MethodImplKind = tok::objc_not_keyword; |
| SourceLocation AtEndLoc; |
| |
| while (1) { |
| if (Tok.is(tok::at)) { |
| SourceLocation AtLoc = ConsumeToken(); // the "@" |
| tok::ObjCKeywordKind ocKind = Tok.getObjCKeywordID(); |
| |
| if (ocKind == tok::objc_end) { // terminate list |
| AtEndLoc = AtLoc; |
| break; |
| } else if (ocKind == tok::objc_required) { // protocols only |
| ConsumeToken(); |
| MethodImplKind = ocKind; |
| if (contextKey != tok::objc_protocol) |
| Diag(AtLoc, diag::err_objc_protocol_required); |
| } else if (ocKind == tok::objc_optional) { // protocols only |
| ConsumeToken(); |
| MethodImplKind = ocKind; |
| if (contextKey != tok::objc_protocol) |
| Diag(AtLoc, diag::err_objc_protocol_optional); |
| } else if (ocKind == tok::objc_property) { |
| allProperties.push_back(ParseObjCPropertyDecl(interfaceDecl, AtLoc)); |
| continue; |
| } else { |
| Diag(Tok, diag::err_objc_illegal_interface_qual); |
| ConsumeToken(); |
| } |
| } |
| if (Tok.is(tok::minus) || Tok.is(tok::plus)) { |
| DeclTy *methodPrototype = |
| ParseObjCMethodPrototype(interfaceDecl, MethodImplKind); |
| allMethods.push_back(methodPrototype); |
| // Consume the ';' here, since ParseObjCMethodPrototype() is re-used for |
| // method definitions. |
| ExpectAndConsume(tok::semi, diag::err_expected_semi_after,"method proto"); |
| continue; |
| } |
| else if (Tok.is(tok::at)) |
| continue; |
| |
| if (Tok.is(tok::semi)) |
| ConsumeToken(); |
| else if (Tok.is(tok::eof)) |
| break; |
| else { |
| // FIXME: as the name implies, this rule allows function definitions. |
| // We could pass a flag or check for functions during semantic analysis. |
| ParseDeclarationOrFunctionDefinition(); |
| } |
| } |
| /// Insert collected methods declarations into the @interface object. |
| Actions.ActOnAtEnd(AtEndLoc, interfaceDecl, &allMethods[0], allMethods.size(), |
| &allProperties[0], allProperties.size()); |
| } |
| |
| /// Parse property attribute declarations. |
| /// |
| /// property-attr-decl: '(' property-attrlist ')' |
| /// property-attrlist: |
| /// property-attribute |
| /// property-attrlist ',' property-attribute |
| /// property-attribute: |
| /// getter '=' identifier |
| /// setter '=' identifier ':' |
| /// readonly |
| /// readwrite |
| /// assign |
| /// retain |
| /// copy |
| /// nonatomic |
| /// |
| void Parser::ParseObjCPropertyAttribute (ObjcDeclSpec &DS) { |
| SourceLocation loc = ConsumeParen(); // consume '(' |
| while (isObjCPropertyAttribute()) { |
| const IdentifierInfo *II = Tok.getIdentifierInfo(); |
| // getter/setter require extra treatment. |
| if (II == ObjcPropertyAttrs[objc_getter] || |
| II == ObjcPropertyAttrs[objc_setter]) { |
| // skip getter/setter part. |
| SourceLocation loc = ConsumeToken(); |
| if (Tok.is(tok::equal)) { |
| loc = ConsumeToken(); |
| if (Tok.is(tok::identifier)) { |
| if (II == ObjcPropertyAttrs[objc_setter]) { |
| DS.setPropertyAttributes(ObjcDeclSpec::DQ_PR_setter); |
| DS.setSetterName(Tok.getIdentifierInfo()); |
| loc = ConsumeToken(); // consume method name |
| if (Tok.isNot(tok::colon)) { |
| Diag(loc, diag::err_expected_colon); |
| SkipUntil(tok::r_paren,true,true); |
| break; |
| } |
| } |
| else { |
| DS.setPropertyAttributes(ObjcDeclSpec::DQ_PR_getter); |
| DS.setGetterName(Tok.getIdentifierInfo()); |
| } |
| } |
| else { |
| Diag(loc, diag::err_expected_ident); |
| SkipUntil(tok::r_paren,true,true); |
| break; |
| } |
| } |
| else { |
| Diag(loc, diag::err_objc_expected_equal); |
| SkipUntil(tok::r_paren,true,true); |
| break; |
| } |
| } |
| |
| else if (II == ObjcPropertyAttrs[objc_readonly]) |
| DS.setPropertyAttributes(ObjcDeclSpec::DQ_PR_readonly); |
| else if (II == ObjcPropertyAttrs[objc_assign]) |
| DS.setPropertyAttributes(ObjcDeclSpec::DQ_PR_assign); |
| else if (II == ObjcPropertyAttrs[objc_readwrite]) |
| DS.setPropertyAttributes(ObjcDeclSpec::DQ_PR_readwrite); |
| else if (II == ObjcPropertyAttrs[objc_retain]) |
| DS.setPropertyAttributes(ObjcDeclSpec::DQ_PR_retain); |
| else if (II == ObjcPropertyAttrs[objc_copy]) |
| DS.setPropertyAttributes(ObjcDeclSpec::DQ_PR_copy); |
| else if (II == ObjcPropertyAttrs[objc_nonatomic]) |
| DS.setPropertyAttributes(ObjcDeclSpec::DQ_PR_nonatomic); |
| |
| ConsumeToken(); // consume last attribute token |
| if (Tok.is(tok::comma)) { |
| loc = ConsumeToken(); |
| continue; |
| } |
| if (Tok.is(tok::r_paren)) |
| break; |
| Diag(loc, diag::err_expected_rparen); |
| SkipUntil(tok::semi); |
| return; |
| } |
| if (Tok.is(tok::r_paren)) |
| ConsumeParen(); |
| else { |
| Diag(loc, diag::err_objc_expected_property_attr); |
| SkipUntil(tok::r_paren); // recover from error inside attribute list |
| } |
| } |
| |
| /// Main routine to parse property declaration. |
| /// |
| /// @property property-attr-decl[opt] property-component-decl ';' |
| /// |
| Parser::DeclTy *Parser::ParseObjCPropertyDecl(DeclTy *interfaceDecl, |
| SourceLocation AtLoc) { |
| assert(Tok.isObjCAtKeyword(tok::objc_property) && |
| "ParseObjCPropertyDecl(): Expected @property"); |
| ObjcDeclSpec DS; |
| ConsumeToken(); // the "property" identifier |
| // Parse property attribute list, if any. |
| if (Tok.is(tok::l_paren)) { |
| // property has attribute list. |
| ParseObjCPropertyAttribute(DS); |
| } |
| // Parse declaration portion of @property. |
| llvm::SmallVector<DeclTy*, 8> PropertyDecls; |
| ParseStructDeclaration(interfaceDecl, PropertyDecls); |
| if (Tok.is(tok::semi)) |
| ConsumeToken(); |
| else { |
| Diag(Tok, diag::err_expected_semi_decl_list); |
| SkipUntil(tok::r_brace, true, true); |
| } |
| return Actions.ActOnAddObjcProperties(AtLoc, |
| &PropertyDecls[0], PropertyDecls.size(), DS); |
| } |
| |
| /// objc-method-proto: |
| /// objc-instance-method objc-method-decl objc-method-attributes[opt] |
| /// objc-class-method objc-method-decl objc-method-attributes[opt] |
| /// |
| /// objc-instance-method: '-' |
| /// objc-class-method: '+' |
| /// |
| /// objc-method-attributes: [OBJC2] |
| /// __attribute__((deprecated)) |
| /// |
| Parser::DeclTy *Parser::ParseObjCMethodPrototype(DeclTy *IDecl, |
| tok::ObjCKeywordKind MethodImplKind) { |
| assert((Tok.is(tok::minus) || Tok.is(tok::plus)) && "expected +/-"); |
| |
| tok::TokenKind methodType = Tok.getKind(); |
| SourceLocation mLoc = ConsumeToken(); |
| |
| DeclTy *MDecl = ParseObjCMethodDecl(mLoc, methodType, IDecl, MethodImplKind); |
| // Since this rule is used for both method declarations and definitions, |
| // the caller is (optionally) responsible for consuming the ';'. |
| return MDecl; |
| } |
| |
| /// objc-selector: |
| /// identifier |
| /// one of |
| /// enum struct union if else while do for switch case default |
| /// break continue return goto asm sizeof typeof __alignof |
| /// unsigned long const short volatile signed restrict _Complex |
| /// in out inout bycopy byref oneway int char float double void _Bool |
| /// |
| IdentifierInfo *Parser::ParseObjCSelector(SourceLocation &SelectorLoc) { |
| switch (Tok.getKind()) { |
| default: |
| return 0; |
| case tok::identifier: |
| case tok::kw_typeof: |
| case tok::kw___alignof: |
| case tok::kw_auto: |
| case tok::kw_break: |
| case tok::kw_case: |
| case tok::kw_char: |
| case tok::kw_const: |
| case tok::kw_continue: |
| case tok::kw_default: |
| case tok::kw_do: |
| case tok::kw_double: |
| case tok::kw_else: |
| case tok::kw_enum: |
| case tok::kw_extern: |
| case tok::kw_float: |
| case tok::kw_for: |
| case tok::kw_goto: |
| case tok::kw_if: |
| case tok::kw_inline: |
| case tok::kw_int: |
| case tok::kw_long: |
| case tok::kw_register: |
| 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_struct: |
| case tok::kw_switch: |
| case tok::kw_typedef: |
| case tok::kw_union: |
| case tok::kw_unsigned: |
| case tok::kw_void: |
| case tok::kw_volatile: |
| case tok::kw_while: |
| case tok::kw_bool: |
| case tok::kw__Bool: |
| case tok::kw__Complex: |
| IdentifierInfo *II = Tok.getIdentifierInfo(); |
| SelectorLoc = ConsumeToken(); |
| return II; |
| } |
| } |
| |
| /// property-attrlist: one of |
| /// readonly getter setter assign retain copy nonatomic |
| /// |
| bool Parser::isObjCPropertyAttribute() { |
| if (Tok.is(tok::identifier)) { |
| const IdentifierInfo *II = Tok.getIdentifierInfo(); |
| for (unsigned i = 0; i < objc_NumAttrs; ++i) |
| if (II == ObjcPropertyAttrs[i]) return true; |
| } |
| return false; |
| } |
| |
| /// 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.is(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(), RParenLoc; |
| TypeTy *Ty = 0; |
| |
| // Parse type qualifiers, in, inout, etc. |
| ParseObjcTypeQualifierList(DS); |
| |
| if (isTypeSpecifierQualifier()) { |
| Ty = ParseTypeName(); |
| // FIXME: back when Sema support is in place... |
| // assert(Ty && "Parser::ParseObjCTypeName(): missing type"); |
| } |
| if (Tok.isNot(tok::r_paren)) { |
| MatchRHSPunctuation(tok::r_paren, LParenLoc); |
| return 0; // FIXME: decide how we want to handle this error... |
| } |
| RParenLoc = ConsumeParen(); |
| 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. |
| TypeTy *ReturnType = 0; |
| ObjcDeclSpec DSRet; |
| if (Tok.is(tok::l_paren)) |
| ReturnType = ParseObjCTypeName(DSRet); |
| SourceLocation selLoc; |
| IdentifierInfo *SelIdent = ParseObjCSelector(selLoc); |
| if (Tok.isNot(tok::colon)) { |
| if (!SelIdent) { |
| Diag(Tok, diag::err_expected_ident); // missing selector name. |
| // FIXME: this creates a unary selector with a null identifier, is this |
| // ok?? Maybe we should skip to the next semicolon or something. |
| } |
| |
| // 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); |
| } |
| |
| /// CmpProtocolVals - Comparison predicate for sorting protocols. |
| static bool CmpProtocolVals(const IdentifierInfo* const& lhs, |
| const IdentifierInfo* const& rhs) { |
| return strcmp(lhs->getName(), rhs->getName()) < 0; |
| } |
| |
| /// objc-protocol-refs: |
| /// '<' identifier-list '>' |
| /// |
| bool Parser::ParseObjCProtocolReferences( |
| llvm::SmallVectorImpl<IdentifierInfo*> &ProtocolRefs, SourceLocation &endLoc) |
| { |
| assert(Tok.is(tok::less) && "expected <"); |
| |
| ConsumeToken(); // the "<" |
| |
| while (1) { |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| SkipUntil(tok::greater); |
| return true; |
| } |
| ProtocolRefs.push_back(Tok.getIdentifierInfo()); |
| ConsumeToken(); |
| |
| if (Tok.isNot(tok::comma)) |
| break; |
| ConsumeToken(); |
| } |
| |
| // Sort protocols, keyed by name. |
| // Later on, we remove duplicates. |
| std::stable_sort(ProtocolRefs.begin(), ProtocolRefs.end(), CmpProtocolVals); |
| |
| // Make protocol names unique. |
| ProtocolRefs.erase(std::unique(ProtocolRefs.begin(), ProtocolRefs.end()), |
| ProtocolRefs.end()); |
| // Consume the '>'. |
| if (Tok.is(tok::greater)) { |
| endLoc = ConsumeAnyToken(); |
| return false; |
| } |
| Diag(Tok, diag::err_expected_greater); |
| return true; |
| } |
| |
| /// 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*, 16> IvarDecls; |
| llvm::SmallVector<DeclTy*, 32> AllIvarDecls; |
| llvm::SmallVector<tok::ObjCKeywordKind, 32> AllVisibilities; |
| |
| SourceLocation LBraceLoc = ConsumeBrace(); // the "{" |
| |
| tok::ObjCKeywordKind visibility = tok::objc_private; |
| // 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); |
| ConsumeToken(); |
| continue; |
| } |
| } |
| ParseStructDeclaration(interfaceDecl, IvarDecls); |
| for (unsigned i = 0; i < IvarDecls.size(); i++) { |
| AllIvarDecls.push_back(IvarDecls[i]); |
| AllVisibilities.push_back(visibility); |
| } |
| IvarDecls.clear(); |
| |
| if (Tok.is(tok::semi)) { |
| ConsumeToken(); |
| } else if (Tok.is(tok::r_brace)) { |
| Diag(Tok.getLocation(), diag::ext_expected_semi_decl_list); |
| break; |
| } 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, &AllVisibilities[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) { |
| 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(); |
| |
| llvm::SmallVector<IdentifierInfo *, 8> ProtocolRefs; |
| if (Tok.is(tok::semi)) { // forward declaration of one protocol. |
| ConsumeToken(); |
| ProtocolRefs.push_back(protocolName); |
| } |
| if (Tok.is(tok::comma)) { // list of forward declarations. |
| // Parse the list of forward declarations. |
| ProtocolRefs.push_back(protocolName); |
| |
| while (1) { |
| ConsumeToken(); // the ',' |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| ProtocolRefs.push_back(Tok.getIdentifierInfo()); |
| ConsumeToken(); // the identifier |
| |
| if (Tok.isNot(tok::comma)) |
| break; |
| } |
| // Consume the ';'. |
| if (ExpectAndConsume(tok::semi, diag::err_expected_semi_after, "@protocol")) |
| return 0; |
| } |
| if (ProtocolRefs.size() > 0) |
| return Actions.ActOnForwardProtocolDeclaration(AtLoc, |
| &ProtocolRefs[0], |
| ProtocolRefs.size()); |
| // Last, and definitely not least, parse a protocol declaration. |
| SourceLocation endProtoLoc; |
| if (Tok.is(tok::less)) { |
| if (ParseObjCProtocolReferences(ProtocolRefs, endProtoLoc)) |
| return 0; |
| } |
| |
| DeclTy *ProtoType = Actions.ActOnStartProtocolInterface(AtLoc, |
| protocolName, nameLoc, |
| &ProtocolRefs[0], |
| ProtocolRefs.size(), endProtoLoc); |
| ParseObjCInterfaceDeclList(ProtoType, tok::objc_protocol); |
| |
| // The @ sign was already consumed by ParseObjCInterfaceDeclList(). |
| if (Tok.isObjCAtKeyword(tok::objc_end)) { |
| ConsumeToken(); // the "end" identifier |
| return ProtoType; |
| } |
| Diag(Tok, diag::err_objc_missing_end); |
| return 0; |
| } |
| |
| /// 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) { |
| // Checking is not necessary except that a parse error might have caused |
| // @implementation not to have been parsed to completion and ObjcImpDecl |
| // could be 0. |
| Actions.ActOnAtEnd(atLoc, ObjcImpDecl); |
| } |
| |
| 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 dynamic |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| return 0; |
| } |
| while (Tok.is(tok::identifier)) { |
| 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; |
| } |
| ConsumeToken(); // consume ivar-name |
| } |
| 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)) { |
| ConsumeToken(); // consume property name |
| 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-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; |
| StmtResult TryBody = ParseCompoundStatementBody(); |
| if (TryBody.isInvalid) |
| TryBody = Actions.ActOnNullStmt(Tok.getLocation()); |
| while (Tok.is(tok::at)) { |
| SourceLocation AtCatchFinallyLoc = ConsumeToken(); |
| if (Tok.getIdentifierInfo()->getObjCKeywordID() == 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); |
| // FIXME: Is BlockContext right? |
| Declarator DeclaratorInfo(DS, Declarator::BlockContext); |
| ParseDeclarator(DeclaratorInfo); |
| DeclTy * aBlockVarDecl = Actions.ActOnDeclarator(CurScope, |
| DeclaratorInfo, 0); |
| StmtResult stmtResult = Actions.ActOnDeclStmt(aBlockVarDecl); |
| FirstPart = stmtResult.isInvalid ? 0 : stmtResult.Val; |
| } |
| else |
| ConsumeToken(); // consume '...' |
| SourceLocation RParenLoc = ConsumeParen(); |
| StmtResult CatchBody = ParseCompoundStatementBody(); |
| 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 if (Tok.getIdentifierInfo()->getObjCKeywordID() == tok::objc_finally) { |
| ConsumeToken(); // consume finally |
| StmtResult FinallyBody = ParseCompoundStatementBody(); |
| if (FinallyBody.isInvalid) |
| FinallyBody = Actions.ActOnNullStmt(Tok.getLocation()); |
| FinallyStmt = Actions.ActOnObjcAtFinallyStmt(AtCatchFinallyLoc, |
| FinallyBody.Val); |
| catch_or_finally_seen = true; |
| 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_fn_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::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: |
| break; |
| } |
| |
| 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: |
| Diag(AtLoc, diag::err_unexpected_at); |
| SkipUntil(tok::semi); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /// objc-message-expr: |
| /// '[' objc-receiver objc-message-args ']' |
| /// |
| /// objc-receiver: |
| /// expression |
| /// class-name |
| /// type-name |
| /// |
| /// 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::ParseObjCMessageExpression() { |
| assert(Tok.is(tok::l_square) && "'[' expected"); |
| SourceLocation LBracloc = ConsumeBracket(); // consume '[' |
| IdentifierInfo *ReceiverName = 0; |
| ExprTy *ReceiverExpr = 0; |
| // Parse receiver |
| if (Tok.is(tok::identifier) && |
| (Actions.isTypeName(*Tok.getIdentifierInfo(), CurScope) |
| || !strcmp(Tok.getIdentifierInfo()->getName(), "super"))) { |
| ReceiverName = Tok.getIdentifierInfo(); |
| ConsumeToken(); |
| } else { |
| ExprResult Res = ParseAssignmentExpression(); |
| if (Res.isInvalid) { |
| Diag(Tok, diag::err_invalid_receiver_to_message); |
| SkipUntil(tok::identifier); |
| return Res; |
| } |
| ReceiverExpr = Res.Val; |
| } |
| // 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); |
| SkipUntil(tok::semi); |
| return true; |
| } |
| ConsumeToken(); // Eat the ':'. |
| /// Parse the expression after ':' |
| ExprResult Res = ParseAssignmentExpression(); |
| if (Res.isInvalid) { |
| SkipUntil(tok::identifier); |
| 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) { |
| SkipUntil(tok::identifier); |
| return Res; |
| } |
| // We have a valid expression. |
| KeyExprs.push_back(Res.Val); |
| } |
| } else if (!selIdent) { |
| Diag(Tok, diag::err_expected_ident); // missing selector name. |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| |
| if (Tok.isNot(tok::r_square)) { |
| Diag(Tok, diag::err_expected_rsquare); |
| SkipUntil(tok::semi); |
| return 0; |
| } |
| 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)) { |
| Diag(Tok, diag::err_expected_lparen_after, "@encode"); |
| return true; |
| } |
| |
| 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)) { |
| Diag(Tok, diag::err_expected_lparen_after, "@protocol"); |
| return true; |
| } |
| |
| SourceLocation LParenLoc = ConsumeParen(); |
| |
| if (Tok.isNot(tok::identifier)) { |
| Diag(Tok, diag::err_expected_ident); |
| return true; |
| } |
| 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)) { |
| Diag(Tok, diag::err_expected_lparen_after, "@selector"); |
| return 0; |
| } |
| |
| llvm::SmallVector<IdentifierInfo *, 12> KeyIdents; |
| SourceLocation LParenLoc = ConsumeParen(); |
| SourceLocation sLoc; |
| IdentifierInfo *SelIdent = ParseObjCSelector(sLoc); |
| if (!SelIdent && Tok.isNot(tok::colon)) { |
| Diag(Tok, diag::err_expected_ident); // missing selector name. |
| return 0; |
| } |
| KeyIdents.push_back(SelIdent); |
| unsigned nColons = 0; |
| if (Tok.isNot(tok::r_paren)) { |
| while (1) { |
| if (Tok.isNot(tok::colon)) { |
| Diag(Tok, diag::err_expected_colon); |
| break; |
| } |
| 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); |
| } |