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5dafebc89f
Explictly defaultedness is correctly reflected on the AST, but there are no changes to how that affects the definition of functions or much else really. llvm-svn: 130974
2477 lines
87 KiB
C++
2477 lines
87 KiB
C++
//===--- ParseDeclCXX.cpp - C++ Declaration Parsing -----------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the C++ Declaration portions of the Parser interfaces.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Basic/OperatorKinds.h"
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#include "clang/Parse/Parser.h"
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#include "clang/Parse/ParseDiagnostic.h"
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#include "clang/Sema/DeclSpec.h"
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#include "clang/Sema/Scope.h"
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#include "clang/Sema/ParsedTemplate.h"
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#include "clang/Sema/PrettyDeclStackTrace.h"
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#include "RAIIObjectsForParser.h"
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using namespace clang;
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/// ParseNamespace - We know that the current token is a namespace keyword. This
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/// may either be a top level namespace or a block-level namespace alias. If
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/// there was an inline keyword, it has already been parsed.
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///
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/// namespace-definition: [C++ 7.3: basic.namespace]
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/// named-namespace-definition
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/// unnamed-namespace-definition
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///
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/// unnamed-namespace-definition:
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/// 'inline'[opt] 'namespace' attributes[opt] '{' namespace-body '}'
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///
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/// named-namespace-definition:
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/// original-namespace-definition
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/// extension-namespace-definition
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///
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/// original-namespace-definition:
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/// 'inline'[opt] 'namespace' identifier attributes[opt]
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/// '{' namespace-body '}'
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///
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/// extension-namespace-definition:
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/// 'inline'[opt] 'namespace' original-namespace-name
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/// '{' namespace-body '}'
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///
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/// namespace-alias-definition: [C++ 7.3.2: namespace.alias]
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/// 'namespace' identifier '=' qualified-namespace-specifier ';'
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///
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Decl *Parser::ParseNamespace(unsigned Context,
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SourceLocation &DeclEnd,
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SourceLocation InlineLoc) {
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assert(Tok.is(tok::kw_namespace) && "Not a namespace!");
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SourceLocation NamespaceLoc = ConsumeToken(); // eat the 'namespace'.
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if (Tok.is(tok::code_completion)) {
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Actions.CodeCompleteNamespaceDecl(getCurScope());
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ConsumeCodeCompletionToken();
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}
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SourceLocation IdentLoc;
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IdentifierInfo *Ident = 0;
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Token attrTok;
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if (Tok.is(tok::identifier)) {
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Ident = Tok.getIdentifierInfo();
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IdentLoc = ConsumeToken(); // eat the identifier.
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}
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// Read label attributes, if present.
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ParsedAttributes attrs(AttrFactory);
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if (Tok.is(tok::kw___attribute)) {
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attrTok = Tok;
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ParseGNUAttributes(attrs);
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}
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if (Tok.is(tok::equal)) {
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if (!attrs.empty())
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Diag(attrTok, diag::err_unexpected_namespace_attributes_alias);
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if (InlineLoc.isValid())
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Diag(InlineLoc, diag::err_inline_namespace_alias)
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<< FixItHint::CreateRemoval(InlineLoc);
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return ParseNamespaceAlias(NamespaceLoc, IdentLoc, Ident, DeclEnd);
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}
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if (Tok.isNot(tok::l_brace)) {
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Diag(Tok, Ident ? diag::err_expected_lbrace :
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diag::err_expected_ident_lbrace);
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return 0;
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}
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SourceLocation LBrace = ConsumeBrace();
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if (getCurScope()->isClassScope() || getCurScope()->isTemplateParamScope() ||
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getCurScope()->isInObjcMethodScope() || getCurScope()->getBlockParent() ||
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getCurScope()->getFnParent()) {
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Diag(LBrace, diag::err_namespace_nonnamespace_scope);
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SkipUntil(tok::r_brace, false);
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return 0;
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}
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// If we're still good, complain about inline namespaces in non-C++0x now.
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if (!getLang().CPlusPlus0x && InlineLoc.isValid())
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Diag(InlineLoc, diag::ext_inline_namespace);
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// Enter a scope for the namespace.
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ParseScope NamespaceScope(this, Scope::DeclScope);
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Decl *NamespcDecl =
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Actions.ActOnStartNamespaceDef(getCurScope(), InlineLoc, NamespaceLoc,
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IdentLoc, Ident, LBrace, attrs.getList());
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PrettyDeclStackTraceEntry CrashInfo(Actions, NamespcDecl, NamespaceLoc,
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"parsing namespace");
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while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) {
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ParsedAttributesWithRange attrs(AttrFactory);
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MaybeParseCXX0XAttributes(attrs);
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MaybeParseMicrosoftAttributes(attrs);
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ParseExternalDeclaration(attrs);
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}
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// Leave the namespace scope.
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NamespaceScope.Exit();
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SourceLocation RBraceLoc = MatchRHSPunctuation(tok::r_brace, LBrace);
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Actions.ActOnFinishNamespaceDef(NamespcDecl, RBraceLoc);
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DeclEnd = RBraceLoc;
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return NamespcDecl;
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}
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/// ParseNamespaceAlias - Parse the part after the '=' in a namespace
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/// alias definition.
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///
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Decl *Parser::ParseNamespaceAlias(SourceLocation NamespaceLoc,
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SourceLocation AliasLoc,
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IdentifierInfo *Alias,
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SourceLocation &DeclEnd) {
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assert(Tok.is(tok::equal) && "Not equal token");
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ConsumeToken(); // eat the '='.
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if (Tok.is(tok::code_completion)) {
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Actions.CodeCompleteNamespaceAliasDecl(getCurScope());
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ConsumeCodeCompletionToken();
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}
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CXXScopeSpec SS;
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// Parse (optional) nested-name-specifier.
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ParseOptionalCXXScopeSpecifier(SS, ParsedType(), false);
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if (SS.isInvalid() || Tok.isNot(tok::identifier)) {
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Diag(Tok, diag::err_expected_namespace_name);
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// Skip to end of the definition and eat the ';'.
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SkipUntil(tok::semi);
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return 0;
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}
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// Parse identifier.
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IdentifierInfo *Ident = Tok.getIdentifierInfo();
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SourceLocation IdentLoc = ConsumeToken();
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// Eat the ';'.
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DeclEnd = Tok.getLocation();
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ExpectAndConsume(tok::semi, diag::err_expected_semi_after_namespace_name,
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"", tok::semi);
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return Actions.ActOnNamespaceAliasDef(getCurScope(), NamespaceLoc, AliasLoc, Alias,
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SS, IdentLoc, Ident);
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}
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/// ParseLinkage - We know that the current token is a string_literal
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/// and just before that, that extern was seen.
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///
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/// linkage-specification: [C++ 7.5p2: dcl.link]
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/// 'extern' string-literal '{' declaration-seq[opt] '}'
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/// 'extern' string-literal declaration
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///
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Decl *Parser::ParseLinkage(ParsingDeclSpec &DS, unsigned Context) {
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assert(Tok.is(tok::string_literal) && "Not a string literal!");
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llvm::SmallString<8> LangBuffer;
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bool Invalid = false;
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llvm::StringRef Lang = PP.getSpelling(Tok, LangBuffer, &Invalid);
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if (Invalid)
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return 0;
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SourceLocation Loc = ConsumeStringToken();
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ParseScope LinkageScope(this, Scope::DeclScope);
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Decl *LinkageSpec
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= Actions.ActOnStartLinkageSpecification(getCurScope(),
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DS.getSourceRange().getBegin(),
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Loc, Lang,
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Tok.is(tok::l_brace) ? Tok.getLocation()
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: SourceLocation());
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ParsedAttributesWithRange attrs(AttrFactory);
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MaybeParseCXX0XAttributes(attrs);
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MaybeParseMicrosoftAttributes(attrs);
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if (Tok.isNot(tok::l_brace)) {
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// Reset the source range in DS, as the leading "extern"
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// does not really belong to the inner declaration ...
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DS.SetRangeStart(SourceLocation());
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DS.SetRangeEnd(SourceLocation());
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// ... but anyway remember that such an "extern" was seen.
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DS.setExternInLinkageSpec(true);
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ParseExternalDeclaration(attrs, &DS);
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return Actions.ActOnFinishLinkageSpecification(getCurScope(), LinkageSpec,
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SourceLocation());
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}
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DS.abort();
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ProhibitAttributes(attrs);
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SourceLocation LBrace = ConsumeBrace();
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while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) {
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ParsedAttributesWithRange attrs(AttrFactory);
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MaybeParseCXX0XAttributes(attrs);
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MaybeParseMicrosoftAttributes(attrs);
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ParseExternalDeclaration(attrs);
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}
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SourceLocation RBrace = MatchRHSPunctuation(tok::r_brace, LBrace);
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return Actions.ActOnFinishLinkageSpecification(getCurScope(), LinkageSpec,
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RBrace);
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}
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/// ParseUsingDirectiveOrDeclaration - Parse C++ using using-declaration or
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/// using-directive. Assumes that current token is 'using'.
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Decl *Parser::ParseUsingDirectiveOrDeclaration(unsigned Context,
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const ParsedTemplateInfo &TemplateInfo,
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SourceLocation &DeclEnd,
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ParsedAttributesWithRange &attrs) {
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assert(Tok.is(tok::kw_using) && "Not using token");
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// Eat 'using'.
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SourceLocation UsingLoc = ConsumeToken();
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if (Tok.is(tok::code_completion)) {
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Actions.CodeCompleteUsing(getCurScope());
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ConsumeCodeCompletionToken();
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}
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// 'using namespace' means this is a using-directive.
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if (Tok.is(tok::kw_namespace)) {
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// Template parameters are always an error here.
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if (TemplateInfo.Kind) {
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SourceRange R = TemplateInfo.getSourceRange();
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Diag(UsingLoc, diag::err_templated_using_directive)
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<< R << FixItHint::CreateRemoval(R);
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}
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return ParseUsingDirective(Context, UsingLoc, DeclEnd, attrs);
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}
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// Otherwise, it must be a using-declaration or an alias-declaration.
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// Using declarations can't have attributes.
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ProhibitAttributes(attrs);
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return ParseUsingDeclaration(Context, TemplateInfo, UsingLoc, DeclEnd);
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}
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/// ParseUsingDirective - Parse C++ using-directive, assumes
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/// that current token is 'namespace' and 'using' was already parsed.
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///
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/// using-directive: [C++ 7.3.p4: namespace.udir]
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/// 'using' 'namespace' ::[opt] nested-name-specifier[opt]
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/// namespace-name ;
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/// [GNU] using-directive:
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/// 'using' 'namespace' ::[opt] nested-name-specifier[opt]
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/// namespace-name attributes[opt] ;
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///
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Decl *Parser::ParseUsingDirective(unsigned Context,
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SourceLocation UsingLoc,
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SourceLocation &DeclEnd,
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ParsedAttributes &attrs) {
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assert(Tok.is(tok::kw_namespace) && "Not 'namespace' token");
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// Eat 'namespace'.
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SourceLocation NamespcLoc = ConsumeToken();
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if (Tok.is(tok::code_completion)) {
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Actions.CodeCompleteUsingDirective(getCurScope());
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ConsumeCodeCompletionToken();
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}
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CXXScopeSpec SS;
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// Parse (optional) nested-name-specifier.
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ParseOptionalCXXScopeSpecifier(SS, ParsedType(), false);
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IdentifierInfo *NamespcName = 0;
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SourceLocation IdentLoc = SourceLocation();
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// Parse namespace-name.
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if (SS.isInvalid() || Tok.isNot(tok::identifier)) {
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Diag(Tok, diag::err_expected_namespace_name);
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// If there was invalid namespace name, skip to end of decl, and eat ';'.
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SkipUntil(tok::semi);
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// FIXME: Are there cases, when we would like to call ActOnUsingDirective?
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return 0;
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}
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// Parse identifier.
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NamespcName = Tok.getIdentifierInfo();
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IdentLoc = ConsumeToken();
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// Parse (optional) attributes (most likely GNU strong-using extension).
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bool GNUAttr = false;
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if (Tok.is(tok::kw___attribute)) {
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GNUAttr = true;
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ParseGNUAttributes(attrs);
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}
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// Eat ';'.
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DeclEnd = Tok.getLocation();
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ExpectAndConsume(tok::semi,
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GNUAttr ? diag::err_expected_semi_after_attribute_list
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: diag::err_expected_semi_after_namespace_name,
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"", tok::semi);
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return Actions.ActOnUsingDirective(getCurScope(), UsingLoc, NamespcLoc, SS,
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IdentLoc, NamespcName, attrs.getList());
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}
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/// ParseUsingDeclaration - Parse C++ using-declaration or alias-declaration.
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/// Assumes that 'using' was already seen.
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///
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/// using-declaration: [C++ 7.3.p3: namespace.udecl]
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/// 'using' 'typename'[opt] ::[opt] nested-name-specifier
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/// unqualified-id
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/// 'using' :: unqualified-id
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///
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/// alias-declaration: C++0x [decl.typedef]p2
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/// 'using' identifier = type-id ;
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///
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Decl *Parser::ParseUsingDeclaration(unsigned Context,
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const ParsedTemplateInfo &TemplateInfo,
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SourceLocation UsingLoc,
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SourceLocation &DeclEnd,
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AccessSpecifier AS) {
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CXXScopeSpec SS;
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SourceLocation TypenameLoc;
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bool IsTypeName;
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// Ignore optional 'typename'.
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// FIXME: This is wrong; we should parse this as a typename-specifier.
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if (Tok.is(tok::kw_typename)) {
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TypenameLoc = Tok.getLocation();
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ConsumeToken();
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IsTypeName = true;
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}
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else
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IsTypeName = false;
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// Parse nested-name-specifier.
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ParseOptionalCXXScopeSpecifier(SS, ParsedType(), false);
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// Check nested-name specifier.
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if (SS.isInvalid()) {
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SkipUntil(tok::semi);
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return 0;
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}
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// Parse the unqualified-id. We allow parsing of both constructor and
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// destructor names and allow the action module to diagnose any semantic
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// errors.
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UnqualifiedId Name;
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if (ParseUnqualifiedId(SS,
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/*EnteringContext=*/false,
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/*AllowDestructorName=*/true,
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/*AllowConstructorName=*/true,
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ParsedType(),
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Name)) {
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SkipUntil(tok::semi);
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return 0;
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}
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ParsedAttributes attrs(AttrFactory);
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// Maybe this is an alias-declaration.
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bool IsAliasDecl = Tok.is(tok::equal);
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TypeResult TypeAlias;
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if (IsAliasDecl) {
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// TODO: Attribute support. C++0x attributes may appear before the equals.
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// Where can GNU attributes appear?
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ConsumeToken();
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if (!getLang().CPlusPlus0x)
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Diag(Tok.getLocation(), diag::ext_alias_declaration);
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// Type alias templates cannot be specialized.
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int SpecKind = -1;
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if (TemplateInfo.Kind == ParsedTemplateInfo::Template &&
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Name.getKind() == UnqualifiedId::IK_TemplateId)
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SpecKind = 0;
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if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization)
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SpecKind = 1;
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if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation)
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SpecKind = 2;
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if (SpecKind != -1) {
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SourceRange Range;
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if (SpecKind == 0)
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Range = SourceRange(Name.TemplateId->LAngleLoc,
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Name.TemplateId->RAngleLoc);
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else
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Range = TemplateInfo.getSourceRange();
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Diag(Range.getBegin(), diag::err_alias_declaration_specialization)
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<< SpecKind << Range;
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SkipUntil(tok::semi);
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return 0;
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}
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// Name must be an identifier.
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if (Name.getKind() != UnqualifiedId::IK_Identifier) {
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Diag(Name.StartLocation, diag::err_alias_declaration_not_identifier);
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// No removal fixit: can't recover from this.
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SkipUntil(tok::semi);
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return 0;
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} else if (IsTypeName)
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Diag(TypenameLoc, diag::err_alias_declaration_not_identifier)
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<< FixItHint::CreateRemoval(SourceRange(TypenameLoc,
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SS.isNotEmpty() ? SS.getEndLoc() : TypenameLoc));
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else if (SS.isNotEmpty())
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Diag(SS.getBeginLoc(), diag::err_alias_declaration_not_identifier)
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<< FixItHint::CreateRemoval(SS.getRange());
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TypeAlias = ParseTypeName(0, TemplateInfo.Kind ?
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Declarator::AliasTemplateContext :
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Declarator::AliasDeclContext);
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} else
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// Parse (optional) attributes (most likely GNU strong-using extension).
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MaybeParseGNUAttributes(attrs);
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// Eat ';'.
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DeclEnd = Tok.getLocation();
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ExpectAndConsume(tok::semi, diag::err_expected_semi_after,
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!attrs.empty() ? "attributes list" :
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IsAliasDecl ? "alias declaration" : "using declaration",
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tok::semi);
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// Diagnose an attempt to declare a templated using-declaration.
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// In C++0x, alias-declarations can be templates:
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// template <...> using id = type;
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if (TemplateInfo.Kind && !IsAliasDecl) {
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SourceRange R = TemplateInfo.getSourceRange();
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Diag(UsingLoc, diag::err_templated_using_declaration)
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<< R << FixItHint::CreateRemoval(R);
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// Unfortunately, we have to bail out instead of recovering by
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// ignoring the parameters, just in case the nested name specifier
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// depends on the parameters.
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return 0;
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}
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if (IsAliasDecl) {
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TemplateParameterLists *TemplateParams = TemplateInfo.TemplateParams;
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MultiTemplateParamsArg TemplateParamsArg(Actions,
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TemplateParams ? TemplateParams->data() : 0,
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TemplateParams ? TemplateParams->size() : 0);
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return Actions.ActOnAliasDeclaration(getCurScope(), AS, TemplateParamsArg,
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UsingLoc, Name, TypeAlias);
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}
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return Actions.ActOnUsingDeclaration(getCurScope(), AS, true, UsingLoc, SS,
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Name, attrs.getList(),
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IsTypeName, TypenameLoc);
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}
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|
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/// ParseStaticAssertDeclaration - Parse C++0x or C1X static_assert-declaration.
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///
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/// [C++0x] static_assert-declaration:
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/// static_assert ( constant-expression , string-literal ) ;
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///
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/// [C1X] static_assert-declaration:
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/// _Static_assert ( constant-expression , string-literal ) ;
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///
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Decl *Parser::ParseStaticAssertDeclaration(SourceLocation &DeclEnd){
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assert((Tok.is(tok::kw_static_assert) || Tok.is(tok::kw__Static_assert)) &&
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"Not a static_assert declaration");
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if (Tok.is(tok::kw__Static_assert) && !getLang().C1X)
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Diag(Tok, diag::ext_c1x_static_assert);
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SourceLocation StaticAssertLoc = ConsumeToken();
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if (Tok.isNot(tok::l_paren)) {
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Diag(Tok, diag::err_expected_lparen);
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return 0;
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}
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SourceLocation LParenLoc = ConsumeParen();
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ExprResult AssertExpr(ParseConstantExpression());
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if (AssertExpr.isInvalid()) {
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SkipUntil(tok::semi);
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return 0;
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}
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if (ExpectAndConsume(tok::comma, diag::err_expected_comma, "", tok::semi))
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return 0;
|
|
|
|
if (Tok.isNot(tok::string_literal)) {
|
|
Diag(Tok, diag::err_expected_string_literal);
|
|
SkipUntil(tok::semi);
|
|
return 0;
|
|
}
|
|
|
|
ExprResult AssertMessage(ParseStringLiteralExpression());
|
|
if (AssertMessage.isInvalid())
|
|
return 0;
|
|
|
|
SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc);
|
|
|
|
DeclEnd = Tok.getLocation();
|
|
ExpectAndConsumeSemi(diag::err_expected_semi_after_static_assert);
|
|
|
|
return Actions.ActOnStaticAssertDeclaration(StaticAssertLoc,
|
|
AssertExpr.take(),
|
|
AssertMessage.take(),
|
|
RParenLoc);
|
|
}
|
|
|
|
/// ParseDecltypeSpecifier - Parse a C++0x decltype specifier.
|
|
///
|
|
/// 'decltype' ( expression )
|
|
///
|
|
void Parser::ParseDecltypeSpecifier(DeclSpec &DS) {
|
|
assert(Tok.is(tok::kw_decltype) && "Not a decltype specifier");
|
|
|
|
SourceLocation StartLoc = ConsumeToken();
|
|
SourceLocation LParenLoc = Tok.getLocation();
|
|
|
|
if (ExpectAndConsume(tok::l_paren, diag::err_expected_lparen_after,
|
|
"decltype")) {
|
|
SkipUntil(tok::r_paren);
|
|
return;
|
|
}
|
|
|
|
// Parse the expression
|
|
|
|
// C++0x [dcl.type.simple]p4:
|
|
// The operand of the decltype specifier is an unevaluated operand.
|
|
EnterExpressionEvaluationContext Unevaluated(Actions,
|
|
Sema::Unevaluated);
|
|
ExprResult Result = ParseExpression();
|
|
if (Result.isInvalid()) {
|
|
SkipUntil(tok::r_paren);
|
|
return;
|
|
}
|
|
|
|
// Match the ')'
|
|
SourceLocation RParenLoc;
|
|
if (Tok.is(tok::r_paren))
|
|
RParenLoc = ConsumeParen();
|
|
else
|
|
MatchRHSPunctuation(tok::r_paren, LParenLoc);
|
|
|
|
if (RParenLoc.isInvalid())
|
|
return;
|
|
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID;
|
|
// Check for duplicate type specifiers (e.g. "int decltype(a)").
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_decltype, StartLoc, PrevSpec,
|
|
DiagID, Result.release()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
}
|
|
|
|
/// ParseClassName - Parse a C++ class-name, which names a class. Note
|
|
/// that we only check that the result names a type; semantic analysis
|
|
/// will need to verify that the type names a class. The result is
|
|
/// either a type or NULL, depending on whether a type name was
|
|
/// found.
|
|
///
|
|
/// class-name: [C++ 9.1]
|
|
/// identifier
|
|
/// simple-template-id
|
|
///
|
|
Parser::TypeResult Parser::ParseClassName(SourceLocation &EndLocation,
|
|
CXXScopeSpec &SS) {
|
|
// Check whether we have a template-id that names a type.
|
|
if (Tok.is(tok::annot_template_id)) {
|
|
TemplateIdAnnotation *TemplateId
|
|
= static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue());
|
|
if (TemplateId->Kind == TNK_Type_template ||
|
|
TemplateId->Kind == TNK_Dependent_template_name) {
|
|
AnnotateTemplateIdTokenAsType();
|
|
|
|
assert(Tok.is(tok::annot_typename) && "template-id -> type failed");
|
|
ParsedType Type = getTypeAnnotation(Tok);
|
|
EndLocation = Tok.getAnnotationEndLoc();
|
|
ConsumeToken();
|
|
|
|
if (Type)
|
|
return Type;
|
|
return true;
|
|
}
|
|
|
|
// Fall through to produce an error below.
|
|
}
|
|
|
|
if (Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_class_name);
|
|
return true;
|
|
}
|
|
|
|
IdentifierInfo *Id = Tok.getIdentifierInfo();
|
|
SourceLocation IdLoc = ConsumeToken();
|
|
|
|
if (Tok.is(tok::less)) {
|
|
// It looks the user intended to write a template-id here, but the
|
|
// template-name was wrong. Try to fix that.
|
|
TemplateNameKind TNK = TNK_Type_template;
|
|
TemplateTy Template;
|
|
if (!Actions.DiagnoseUnknownTemplateName(*Id, IdLoc, getCurScope(),
|
|
&SS, Template, TNK)) {
|
|
Diag(IdLoc, diag::err_unknown_template_name)
|
|
<< Id;
|
|
}
|
|
|
|
if (!Template)
|
|
return true;
|
|
|
|
// Form the template name
|
|
UnqualifiedId TemplateName;
|
|
TemplateName.setIdentifier(Id, IdLoc);
|
|
|
|
// Parse the full template-id, then turn it into a type.
|
|
if (AnnotateTemplateIdToken(Template, TNK, SS, TemplateName,
|
|
SourceLocation(), true))
|
|
return true;
|
|
if (TNK == TNK_Dependent_template_name)
|
|
AnnotateTemplateIdTokenAsType();
|
|
|
|
// If we didn't end up with a typename token, there's nothing more we
|
|
// can do.
|
|
if (Tok.isNot(tok::annot_typename))
|
|
return true;
|
|
|
|
// Retrieve the type from the annotation token, consume that token, and
|
|
// return.
|
|
EndLocation = Tok.getAnnotationEndLoc();
|
|
ParsedType Type = getTypeAnnotation(Tok);
|
|
ConsumeToken();
|
|
return Type;
|
|
}
|
|
|
|
// We have an identifier; check whether it is actually a type.
|
|
ParsedType Type = Actions.getTypeName(*Id, IdLoc, getCurScope(), &SS, true,
|
|
false, ParsedType(),
|
|
/*NonTrivialTypeSourceInfo=*/true);
|
|
if (!Type) {
|
|
Diag(IdLoc, diag::err_expected_class_name);
|
|
return true;
|
|
}
|
|
|
|
// Consume the identifier.
|
|
EndLocation = IdLoc;
|
|
|
|
// Fake up a Declarator to use with ActOnTypeName.
|
|
DeclSpec DS(AttrFactory);
|
|
DS.SetRangeStart(IdLoc);
|
|
DS.SetRangeEnd(EndLocation);
|
|
DS.getTypeSpecScope() = SS;
|
|
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID;
|
|
DS.SetTypeSpecType(TST_typename, IdLoc, PrevSpec, DiagID, Type);
|
|
|
|
Declarator DeclaratorInfo(DS, Declarator::TypeNameContext);
|
|
return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
|
|
}
|
|
|
|
/// ParseClassSpecifier - Parse a C++ class-specifier [C++ class] or
|
|
/// elaborated-type-specifier [C++ dcl.type.elab]; we can't tell which
|
|
/// until we reach the start of a definition or see a token that
|
|
/// cannot start a definition. If SuppressDeclarations is true, we do know.
|
|
///
|
|
/// class-specifier: [C++ class]
|
|
/// class-head '{' member-specification[opt] '}'
|
|
/// class-head '{' member-specification[opt] '}' attributes[opt]
|
|
/// class-head:
|
|
/// class-key identifier[opt] base-clause[opt]
|
|
/// class-key nested-name-specifier identifier base-clause[opt]
|
|
/// class-key nested-name-specifier[opt] simple-template-id
|
|
/// base-clause[opt]
|
|
/// [GNU] class-key attributes[opt] identifier[opt] base-clause[opt]
|
|
/// [GNU] class-key attributes[opt] nested-name-specifier
|
|
/// identifier base-clause[opt]
|
|
/// [GNU] class-key attributes[opt] nested-name-specifier[opt]
|
|
/// simple-template-id base-clause[opt]
|
|
/// class-key:
|
|
/// 'class'
|
|
/// 'struct'
|
|
/// 'union'
|
|
///
|
|
/// elaborated-type-specifier: [C++ dcl.type.elab]
|
|
/// class-key ::[opt] nested-name-specifier[opt] identifier
|
|
/// class-key ::[opt] nested-name-specifier[opt] 'template'[opt]
|
|
/// simple-template-id
|
|
///
|
|
/// Note that the C++ class-specifier and elaborated-type-specifier,
|
|
/// together, subsume the C99 struct-or-union-specifier:
|
|
///
|
|
/// struct-or-union-specifier: [C99 6.7.2.1]
|
|
/// struct-or-union identifier[opt] '{' struct-contents '}'
|
|
/// struct-or-union identifier
|
|
/// [GNU] struct-or-union attributes[opt] identifier[opt] '{' struct-contents
|
|
/// '}' attributes[opt]
|
|
/// [GNU] struct-or-union attributes[opt] identifier
|
|
/// struct-or-union:
|
|
/// 'struct'
|
|
/// 'union'
|
|
void Parser::ParseClassSpecifier(tok::TokenKind TagTokKind,
|
|
SourceLocation StartLoc, DeclSpec &DS,
|
|
const ParsedTemplateInfo &TemplateInfo,
|
|
AccessSpecifier AS, bool SuppressDeclarations){
|
|
DeclSpec::TST TagType;
|
|
if (TagTokKind == tok::kw_struct)
|
|
TagType = DeclSpec::TST_struct;
|
|
else if (TagTokKind == tok::kw_class)
|
|
TagType = DeclSpec::TST_class;
|
|
else {
|
|
assert(TagTokKind == tok::kw_union && "Not a class specifier");
|
|
TagType = DeclSpec::TST_union;
|
|
}
|
|
|
|
if (Tok.is(tok::code_completion)) {
|
|
// Code completion for a struct, class, or union name.
|
|
Actions.CodeCompleteTag(getCurScope(), TagType);
|
|
ConsumeCodeCompletionToken();
|
|
}
|
|
|
|
// C++03 [temp.explicit] 14.7.2/8:
|
|
// The usual access checking rules do not apply to names used to specify
|
|
// explicit instantiations.
|
|
//
|
|
// As an extension we do not perform access checking on the names used to
|
|
// specify explicit specializations either. This is important to allow
|
|
// specializing traits classes for private types.
|
|
bool SuppressingAccessChecks = false;
|
|
if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
|
|
TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization) {
|
|
Actions.ActOnStartSuppressingAccessChecks();
|
|
SuppressingAccessChecks = true;
|
|
}
|
|
|
|
ParsedAttributes attrs(AttrFactory);
|
|
// If attributes exist after tag, parse them.
|
|
if (Tok.is(tok::kw___attribute))
|
|
ParseGNUAttributes(attrs);
|
|
|
|
// If declspecs exist after tag, parse them.
|
|
while (Tok.is(tok::kw___declspec))
|
|
ParseMicrosoftDeclSpec(attrs);
|
|
|
|
// If C++0x attributes exist here, parse them.
|
|
// FIXME: Are we consistent with the ordering of parsing of different
|
|
// styles of attributes?
|
|
MaybeParseCXX0XAttributes(attrs);
|
|
|
|
if (TagType == DeclSpec::TST_struct &&
|
|
!Tok.is(tok::identifier) &&
|
|
Tok.getIdentifierInfo() &&
|
|
(Tok.is(tok::kw___is_arithmetic) ||
|
|
Tok.is(tok::kw___is_convertible) ||
|
|
Tok.is(tok::kw___is_empty) ||
|
|
Tok.is(tok::kw___is_floating_point) ||
|
|
Tok.is(tok::kw___is_function) ||
|
|
Tok.is(tok::kw___is_fundamental) ||
|
|
Tok.is(tok::kw___is_integral) ||
|
|
Tok.is(tok::kw___is_member_function_pointer) ||
|
|
Tok.is(tok::kw___is_member_pointer) ||
|
|
Tok.is(tok::kw___is_pod) ||
|
|
Tok.is(tok::kw___is_pointer) ||
|
|
Tok.is(tok::kw___is_same) ||
|
|
Tok.is(tok::kw___is_scalar) ||
|
|
Tok.is(tok::kw___is_signed) ||
|
|
Tok.is(tok::kw___is_unsigned) ||
|
|
Tok.is(tok::kw___is_void))) {
|
|
// GNU libstdc++ 4.2 and libc++ uaw certain intrinsic names as the
|
|
// name of struct templates, but some are keywords in GCC >= 4.3
|
|
// and Clang. Therefore, when we see the token sequence "struct
|
|
// X", make X into a normal identifier rather than a keyword, to
|
|
// allow libstdc++ 4.2 and libc++ to work properly.
|
|
Tok.getIdentifierInfo()->RevertTokenIDToIdentifier();
|
|
Tok.setKind(tok::identifier);
|
|
}
|
|
|
|
// Parse the (optional) nested-name-specifier.
|
|
CXXScopeSpec &SS = DS.getTypeSpecScope();
|
|
if (getLang().CPlusPlus) {
|
|
// "FOO : BAR" is not a potential typo for "FOO::BAR".
|
|
ColonProtectionRAIIObject X(*this);
|
|
|
|
if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), true))
|
|
DS.SetTypeSpecError();
|
|
if (SS.isSet())
|
|
if (Tok.isNot(tok::identifier) && Tok.isNot(tok::annot_template_id))
|
|
Diag(Tok, diag::err_expected_ident);
|
|
}
|
|
|
|
TemplateParameterLists *TemplateParams = TemplateInfo.TemplateParams;
|
|
|
|
// Parse the (optional) class name or simple-template-id.
|
|
IdentifierInfo *Name = 0;
|
|
SourceLocation NameLoc;
|
|
TemplateIdAnnotation *TemplateId = 0;
|
|
if (Tok.is(tok::identifier)) {
|
|
Name = Tok.getIdentifierInfo();
|
|
NameLoc = ConsumeToken();
|
|
|
|
if (Tok.is(tok::less) && getLang().CPlusPlus) {
|
|
// The name was supposed to refer to a template, but didn't.
|
|
// Eat the template argument list and try to continue parsing this as
|
|
// a class (or template thereof).
|
|
TemplateArgList TemplateArgs;
|
|
SourceLocation LAngleLoc, RAngleLoc;
|
|
if (ParseTemplateIdAfterTemplateName(TemplateTy(), NameLoc, SS,
|
|
true, LAngleLoc,
|
|
TemplateArgs, RAngleLoc)) {
|
|
// We couldn't parse the template argument list at all, so don't
|
|
// try to give any location information for the list.
|
|
LAngleLoc = RAngleLoc = SourceLocation();
|
|
}
|
|
|
|
Diag(NameLoc, diag::err_explicit_spec_non_template)
|
|
<< (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation)
|
|
<< (TagType == DeclSpec::TST_class? 0
|
|
: TagType == DeclSpec::TST_struct? 1
|
|
: 2)
|
|
<< Name
|
|
<< SourceRange(LAngleLoc, RAngleLoc);
|
|
|
|
// Strip off the last template parameter list if it was empty, since
|
|
// we've removed its template argument list.
|
|
if (TemplateParams && TemplateInfo.LastParameterListWasEmpty) {
|
|
if (TemplateParams && TemplateParams->size() > 1) {
|
|
TemplateParams->pop_back();
|
|
} else {
|
|
TemplateParams = 0;
|
|
const_cast<ParsedTemplateInfo&>(TemplateInfo).Kind
|
|
= ParsedTemplateInfo::NonTemplate;
|
|
}
|
|
} else if (TemplateInfo.Kind
|
|
== ParsedTemplateInfo::ExplicitInstantiation) {
|
|
// Pretend this is just a forward declaration.
|
|
TemplateParams = 0;
|
|
const_cast<ParsedTemplateInfo&>(TemplateInfo).Kind
|
|
= ParsedTemplateInfo::NonTemplate;
|
|
const_cast<ParsedTemplateInfo&>(TemplateInfo).TemplateLoc
|
|
= SourceLocation();
|
|
const_cast<ParsedTemplateInfo&>(TemplateInfo).ExternLoc
|
|
= SourceLocation();
|
|
}
|
|
}
|
|
} else if (Tok.is(tok::annot_template_id)) {
|
|
TemplateId = static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue());
|
|
NameLoc = ConsumeToken();
|
|
|
|
if (TemplateId->Kind != TNK_Type_template &&
|
|
TemplateId->Kind != TNK_Dependent_template_name) {
|
|
// The template-name in the simple-template-id refers to
|
|
// something other than a class template. Give an appropriate
|
|
// error message and skip to the ';'.
|
|
SourceRange Range(NameLoc);
|
|
if (SS.isNotEmpty())
|
|
Range.setBegin(SS.getBeginLoc());
|
|
|
|
Diag(TemplateId->LAngleLoc, diag::err_template_spec_syntax_non_template)
|
|
<< Name << static_cast<int>(TemplateId->Kind) << Range;
|
|
|
|
DS.SetTypeSpecError();
|
|
SkipUntil(tok::semi, false, true);
|
|
TemplateId->Destroy();
|
|
if (SuppressingAccessChecks)
|
|
Actions.ActOnStopSuppressingAccessChecks();
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
// As soon as we're finished parsing the class's template-id, turn access
|
|
// checking back on.
|
|
if (SuppressingAccessChecks)
|
|
Actions.ActOnStopSuppressingAccessChecks();
|
|
|
|
// There are four options here. If we have 'struct foo;', then this
|
|
// is either a forward declaration or a friend declaration, which
|
|
// have to be treated differently. If we have 'struct foo {...',
|
|
// 'struct foo :...' or 'struct foo final[opt]' then this is a
|
|
// definition. Otherwise we have something like 'struct foo xyz', a reference.
|
|
// However, in some contexts, things look like declarations but are just
|
|
// references, e.g.
|
|
// new struct s;
|
|
// or
|
|
// &T::operator struct s;
|
|
// For these, SuppressDeclarations is true.
|
|
Sema::TagUseKind TUK;
|
|
if (SuppressDeclarations)
|
|
TUK = Sema::TUK_Reference;
|
|
else if (Tok.is(tok::l_brace) ||
|
|
(getLang().CPlusPlus && Tok.is(tok::colon)) ||
|
|
isCXX0XFinalKeyword()) {
|
|
if (DS.isFriendSpecified()) {
|
|
// C++ [class.friend]p2:
|
|
// A class shall not be defined in a friend declaration.
|
|
Diag(Tok.getLocation(), diag::err_friend_decl_defines_class)
|
|
<< SourceRange(DS.getFriendSpecLoc());
|
|
|
|
// Skip everything up to the semicolon, so that this looks like a proper
|
|
// friend class (or template thereof) declaration.
|
|
SkipUntil(tok::semi, true, true);
|
|
TUK = Sema::TUK_Friend;
|
|
} else {
|
|
// Okay, this is a class definition.
|
|
TUK = Sema::TUK_Definition;
|
|
}
|
|
} else if (Tok.is(tok::semi))
|
|
TUK = DS.isFriendSpecified() ? Sema::TUK_Friend : Sema::TUK_Declaration;
|
|
else
|
|
TUK = Sema::TUK_Reference;
|
|
|
|
if (!Name && !TemplateId && (DS.getTypeSpecType() == DeclSpec::TST_error ||
|
|
TUK != Sema::TUK_Definition)) {
|
|
if (DS.getTypeSpecType() != DeclSpec::TST_error) {
|
|
// We have a declaration or reference to an anonymous class.
|
|
Diag(StartLoc, diag::err_anon_type_definition)
|
|
<< DeclSpec::getSpecifierName(TagType);
|
|
}
|
|
|
|
SkipUntil(tok::comma, true);
|
|
|
|
if (TemplateId)
|
|
TemplateId->Destroy();
|
|
return;
|
|
}
|
|
|
|
// Create the tag portion of the class or class template.
|
|
DeclResult TagOrTempResult = true; // invalid
|
|
TypeResult TypeResult = true; // invalid
|
|
|
|
bool Owned = false;
|
|
if (TemplateId) {
|
|
// Explicit specialization, class template partial specialization,
|
|
// or explicit instantiation.
|
|
ASTTemplateArgsPtr TemplateArgsPtr(Actions,
|
|
TemplateId->getTemplateArgs(),
|
|
TemplateId->NumArgs);
|
|
if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation &&
|
|
TUK == Sema::TUK_Declaration) {
|
|
// This is an explicit instantiation of a class template.
|
|
TagOrTempResult
|
|
= Actions.ActOnExplicitInstantiation(getCurScope(),
|
|
TemplateInfo.ExternLoc,
|
|
TemplateInfo.TemplateLoc,
|
|
TagType,
|
|
StartLoc,
|
|
SS,
|
|
TemplateId->Template,
|
|
TemplateId->TemplateNameLoc,
|
|
TemplateId->LAngleLoc,
|
|
TemplateArgsPtr,
|
|
TemplateId->RAngleLoc,
|
|
attrs.getList());
|
|
|
|
// Friend template-ids are treated as references unless
|
|
// they have template headers, in which case they're ill-formed
|
|
// (FIXME: "template <class T> friend class A<T>::B<int>;").
|
|
// We diagnose this error in ActOnClassTemplateSpecialization.
|
|
} else if (TUK == Sema::TUK_Reference ||
|
|
(TUK == Sema::TUK_Friend &&
|
|
TemplateInfo.Kind == ParsedTemplateInfo::NonTemplate)) {
|
|
TypeResult = Actions.ActOnTagTemplateIdType(TUK, TagType,
|
|
StartLoc,
|
|
TemplateId->SS,
|
|
TemplateId->Template,
|
|
TemplateId->TemplateNameLoc,
|
|
TemplateId->LAngleLoc,
|
|
TemplateArgsPtr,
|
|
TemplateId->RAngleLoc);
|
|
} else {
|
|
// This is an explicit specialization or a class template
|
|
// partial specialization.
|
|
TemplateParameterLists FakedParamLists;
|
|
|
|
if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
|
|
// This looks like an explicit instantiation, because we have
|
|
// something like
|
|
//
|
|
// template class Foo<X>
|
|
//
|
|
// but it actually has a definition. Most likely, this was
|
|
// meant to be an explicit specialization, but the user forgot
|
|
// the '<>' after 'template'.
|
|
assert(TUK == Sema::TUK_Definition && "Expected a definition here");
|
|
|
|
SourceLocation LAngleLoc
|
|
= PP.getLocForEndOfToken(TemplateInfo.TemplateLoc);
|
|
Diag(TemplateId->TemplateNameLoc,
|
|
diag::err_explicit_instantiation_with_definition)
|
|
<< SourceRange(TemplateInfo.TemplateLoc)
|
|
<< FixItHint::CreateInsertion(LAngleLoc, "<>");
|
|
|
|
// Create a fake template parameter list that contains only
|
|
// "template<>", so that we treat this construct as a class
|
|
// template specialization.
|
|
FakedParamLists.push_back(
|
|
Actions.ActOnTemplateParameterList(0, SourceLocation(),
|
|
TemplateInfo.TemplateLoc,
|
|
LAngleLoc,
|
|
0, 0,
|
|
LAngleLoc));
|
|
TemplateParams = &FakedParamLists;
|
|
}
|
|
|
|
// Build the class template specialization.
|
|
TagOrTempResult
|
|
= Actions.ActOnClassTemplateSpecialization(getCurScope(), TagType, TUK,
|
|
StartLoc, SS,
|
|
TemplateId->Template,
|
|
TemplateId->TemplateNameLoc,
|
|
TemplateId->LAngleLoc,
|
|
TemplateArgsPtr,
|
|
TemplateId->RAngleLoc,
|
|
attrs.getList(),
|
|
MultiTemplateParamsArg(Actions,
|
|
TemplateParams? &(*TemplateParams)[0] : 0,
|
|
TemplateParams? TemplateParams->size() : 0));
|
|
}
|
|
TemplateId->Destroy();
|
|
} else if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation &&
|
|
TUK == Sema::TUK_Declaration) {
|
|
// Explicit instantiation of a member of a class template
|
|
// specialization, e.g.,
|
|
//
|
|
// template struct Outer<int>::Inner;
|
|
//
|
|
TagOrTempResult
|
|
= Actions.ActOnExplicitInstantiation(getCurScope(),
|
|
TemplateInfo.ExternLoc,
|
|
TemplateInfo.TemplateLoc,
|
|
TagType, StartLoc, SS, Name,
|
|
NameLoc, attrs.getList());
|
|
} else if (TUK == Sema::TUK_Friend &&
|
|
TemplateInfo.Kind != ParsedTemplateInfo::NonTemplate) {
|
|
TagOrTempResult =
|
|
Actions.ActOnTemplatedFriendTag(getCurScope(), DS.getFriendSpecLoc(),
|
|
TagType, StartLoc, SS,
|
|
Name, NameLoc, attrs.getList(),
|
|
MultiTemplateParamsArg(Actions,
|
|
TemplateParams? &(*TemplateParams)[0] : 0,
|
|
TemplateParams? TemplateParams->size() : 0));
|
|
} else {
|
|
if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation &&
|
|
TUK == Sema::TUK_Definition) {
|
|
// FIXME: Diagnose this particular error.
|
|
}
|
|
|
|
bool IsDependent = false;
|
|
|
|
// Don't pass down template parameter lists if this is just a tag
|
|
// reference. For example, we don't need the template parameters here:
|
|
// template <class T> class A *makeA(T t);
|
|
MultiTemplateParamsArg TParams;
|
|
if (TUK != Sema::TUK_Reference && TemplateParams)
|
|
TParams =
|
|
MultiTemplateParamsArg(&(*TemplateParams)[0], TemplateParams->size());
|
|
|
|
// Declaration or definition of a class type
|
|
TagOrTempResult = Actions.ActOnTag(getCurScope(), TagType, TUK, StartLoc,
|
|
SS, Name, NameLoc, attrs.getList(), AS,
|
|
TParams, Owned, IsDependent, false,
|
|
false, clang::TypeResult());
|
|
|
|
// If ActOnTag said the type was dependent, try again with the
|
|
// less common call.
|
|
if (IsDependent) {
|
|
assert(TUK == Sema::TUK_Reference || TUK == Sema::TUK_Friend);
|
|
TypeResult = Actions.ActOnDependentTag(getCurScope(), TagType, TUK,
|
|
SS, Name, StartLoc, NameLoc);
|
|
}
|
|
}
|
|
|
|
// If there is a body, parse it and inform the actions module.
|
|
if (TUK == Sema::TUK_Definition) {
|
|
assert(Tok.is(tok::l_brace) ||
|
|
(getLang().CPlusPlus && Tok.is(tok::colon)) ||
|
|
isCXX0XFinalKeyword());
|
|
if (getLang().CPlusPlus)
|
|
ParseCXXMemberSpecification(StartLoc, TagType, TagOrTempResult.get());
|
|
else
|
|
ParseStructUnionBody(StartLoc, TagType, TagOrTempResult.get());
|
|
}
|
|
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID;
|
|
bool Result;
|
|
if (!TypeResult.isInvalid()) {
|
|
Result = DS.SetTypeSpecType(DeclSpec::TST_typename, StartLoc,
|
|
NameLoc.isValid() ? NameLoc : StartLoc,
|
|
PrevSpec, DiagID, TypeResult.get());
|
|
} else if (!TagOrTempResult.isInvalid()) {
|
|
Result = DS.SetTypeSpecType(TagType, StartLoc,
|
|
NameLoc.isValid() ? NameLoc : StartLoc,
|
|
PrevSpec, DiagID, TagOrTempResult.get(), Owned);
|
|
} else {
|
|
DS.SetTypeSpecError();
|
|
return;
|
|
}
|
|
|
|
if (Result)
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
|
|
// At this point, we've successfully parsed a class-specifier in 'definition'
|
|
// form (e.g. "struct foo { int x; }". While we could just return here, we're
|
|
// going to look at what comes after it to improve error recovery. If an
|
|
// impossible token occurs next, we assume that the programmer forgot a ; at
|
|
// the end of the declaration and recover that way.
|
|
//
|
|
// This switch enumerates the valid "follow" set for definition.
|
|
if (TUK == Sema::TUK_Definition) {
|
|
bool ExpectedSemi = true;
|
|
switch (Tok.getKind()) {
|
|
default: break;
|
|
case tok::semi: // struct foo {...} ;
|
|
case tok::star: // struct foo {...} * P;
|
|
case tok::amp: // struct foo {...} & R = ...
|
|
case tok::identifier: // struct foo {...} V ;
|
|
case tok::r_paren: //(struct foo {...} ) {4}
|
|
case tok::annot_cxxscope: // struct foo {...} a:: b;
|
|
case tok::annot_typename: // struct foo {...} a ::b;
|
|
case tok::annot_template_id: // struct foo {...} a<int> ::b;
|
|
case tok::l_paren: // struct foo {...} ( x);
|
|
case tok::comma: // __builtin_offsetof(struct foo{...} ,
|
|
ExpectedSemi = false;
|
|
break;
|
|
// Type qualifiers
|
|
case tok::kw_const: // struct foo {...} const x;
|
|
case tok::kw_volatile: // struct foo {...} volatile x;
|
|
case tok::kw_restrict: // struct foo {...} restrict x;
|
|
case tok::kw_inline: // struct foo {...} inline foo() {};
|
|
// Storage-class specifiers
|
|
case tok::kw_static: // struct foo {...} static x;
|
|
case tok::kw_extern: // struct foo {...} extern x;
|
|
case tok::kw_typedef: // struct foo {...} typedef x;
|
|
case tok::kw_register: // struct foo {...} register x;
|
|
case tok::kw_auto: // struct foo {...} auto x;
|
|
case tok::kw_mutable: // struct foo {...} mutable x;
|
|
// As shown above, type qualifiers and storage class specifiers absolutely
|
|
// can occur after class specifiers according to the grammar. However,
|
|
// almost no one actually writes code like this. If we see one of these,
|
|
// it is much more likely that someone missed a semi colon and the
|
|
// type/storage class specifier we're seeing is part of the *next*
|
|
// intended declaration, as in:
|
|
//
|
|
// struct foo { ... }
|
|
// typedef int X;
|
|
//
|
|
// We'd really like to emit a missing semicolon error instead of emitting
|
|
// an error on the 'int' saying that you can't have two type specifiers in
|
|
// the same declaration of X. Because of this, we look ahead past this
|
|
// token to see if it's a type specifier. If so, we know the code is
|
|
// otherwise invalid, so we can produce the expected semi error.
|
|
if (!isKnownToBeTypeSpecifier(NextToken()))
|
|
ExpectedSemi = false;
|
|
break;
|
|
|
|
case tok::r_brace: // struct bar { struct foo {...} }
|
|
// Missing ';' at end of struct is accepted as an extension in C mode.
|
|
if (!getLang().CPlusPlus)
|
|
ExpectedSemi = false;
|
|
break;
|
|
}
|
|
|
|
if (ExpectedSemi) {
|
|
ExpectAndConsume(tok::semi, diag::err_expected_semi_after_tagdecl,
|
|
TagType == DeclSpec::TST_class ? "class"
|
|
: TagType == DeclSpec::TST_struct? "struct" : "union");
|
|
// Push this token back into the preprocessor and change our current token
|
|
// to ';' so that the rest of the code recovers as though there were an
|
|
// ';' after the definition.
|
|
PP.EnterToken(Tok);
|
|
Tok.setKind(tok::semi);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// ParseBaseClause - Parse the base-clause of a C++ class [C++ class.derived].
|
|
///
|
|
/// base-clause : [C++ class.derived]
|
|
/// ':' base-specifier-list
|
|
/// base-specifier-list:
|
|
/// base-specifier '...'[opt]
|
|
/// base-specifier-list ',' base-specifier '...'[opt]
|
|
void Parser::ParseBaseClause(Decl *ClassDecl) {
|
|
assert(Tok.is(tok::colon) && "Not a base clause");
|
|
ConsumeToken();
|
|
|
|
// Build up an array of parsed base specifiers.
|
|
llvm::SmallVector<CXXBaseSpecifier *, 8> BaseInfo;
|
|
|
|
while (true) {
|
|
// Parse a base-specifier.
|
|
BaseResult Result = ParseBaseSpecifier(ClassDecl);
|
|
if (Result.isInvalid()) {
|
|
// Skip the rest of this base specifier, up until the comma or
|
|
// opening brace.
|
|
SkipUntil(tok::comma, tok::l_brace, true, true);
|
|
} else {
|
|
// Add this to our array of base specifiers.
|
|
BaseInfo.push_back(Result.get());
|
|
}
|
|
|
|
// If the next token is a comma, consume it and keep reading
|
|
// base-specifiers.
|
|
if (Tok.isNot(tok::comma)) break;
|
|
|
|
// Consume the comma.
|
|
ConsumeToken();
|
|
}
|
|
|
|
// Attach the base specifiers
|
|
Actions.ActOnBaseSpecifiers(ClassDecl, BaseInfo.data(), BaseInfo.size());
|
|
}
|
|
|
|
/// ParseBaseSpecifier - Parse a C++ base-specifier. A base-specifier is
|
|
/// one entry in the base class list of a class specifier, for example:
|
|
/// class foo : public bar, virtual private baz {
|
|
/// 'public bar' and 'virtual private baz' are each base-specifiers.
|
|
///
|
|
/// base-specifier: [C++ class.derived]
|
|
/// ::[opt] nested-name-specifier[opt] class-name
|
|
/// 'virtual' access-specifier[opt] ::[opt] nested-name-specifier[opt]
|
|
/// class-name
|
|
/// access-specifier 'virtual'[opt] ::[opt] nested-name-specifier[opt]
|
|
/// class-name
|
|
Parser::BaseResult Parser::ParseBaseSpecifier(Decl *ClassDecl) {
|
|
bool IsVirtual = false;
|
|
SourceLocation StartLoc = Tok.getLocation();
|
|
|
|
// Parse the 'virtual' keyword.
|
|
if (Tok.is(tok::kw_virtual)) {
|
|
ConsumeToken();
|
|
IsVirtual = true;
|
|
}
|
|
|
|
// Parse an (optional) access specifier.
|
|
AccessSpecifier Access = getAccessSpecifierIfPresent();
|
|
if (Access != AS_none)
|
|
ConsumeToken();
|
|
|
|
// Parse the 'virtual' keyword (again!), in case it came after the
|
|
// access specifier.
|
|
if (Tok.is(tok::kw_virtual)) {
|
|
SourceLocation VirtualLoc = ConsumeToken();
|
|
if (IsVirtual) {
|
|
// Complain about duplicate 'virtual'
|
|
Diag(VirtualLoc, diag::err_dup_virtual)
|
|
<< FixItHint::CreateRemoval(VirtualLoc);
|
|
}
|
|
|
|
IsVirtual = true;
|
|
}
|
|
|
|
// Parse optional '::' and optional nested-name-specifier.
|
|
CXXScopeSpec SS;
|
|
ParseOptionalCXXScopeSpecifier(SS, ParsedType(), /*EnteringContext=*/false);
|
|
|
|
// The location of the base class itself.
|
|
SourceLocation BaseLoc = Tok.getLocation();
|
|
|
|
// Parse the class-name.
|
|
SourceLocation EndLocation;
|
|
TypeResult BaseType = ParseClassName(EndLocation, SS);
|
|
if (BaseType.isInvalid())
|
|
return true;
|
|
|
|
// Parse the optional ellipsis (for a pack expansion). The ellipsis is
|
|
// actually part of the base-specifier-list grammar productions, but we
|
|
// parse it here for convenience.
|
|
SourceLocation EllipsisLoc;
|
|
if (Tok.is(tok::ellipsis))
|
|
EllipsisLoc = ConsumeToken();
|
|
|
|
// Find the complete source range for the base-specifier.
|
|
SourceRange Range(StartLoc, EndLocation);
|
|
|
|
// Notify semantic analysis that we have parsed a complete
|
|
// base-specifier.
|
|
return Actions.ActOnBaseSpecifier(ClassDecl, Range, IsVirtual, Access,
|
|
BaseType.get(), BaseLoc, EllipsisLoc);
|
|
}
|
|
|
|
/// getAccessSpecifierIfPresent - Determine whether the next token is
|
|
/// a C++ access-specifier.
|
|
///
|
|
/// access-specifier: [C++ class.derived]
|
|
/// 'private'
|
|
/// 'protected'
|
|
/// 'public'
|
|
AccessSpecifier Parser::getAccessSpecifierIfPresent() const {
|
|
switch (Tok.getKind()) {
|
|
default: return AS_none;
|
|
case tok::kw_private: return AS_private;
|
|
case tok::kw_protected: return AS_protected;
|
|
case tok::kw_public: return AS_public;
|
|
}
|
|
}
|
|
|
|
void Parser::HandleMemberFunctionDefaultArgs(Declarator& DeclaratorInfo,
|
|
Decl *ThisDecl) {
|
|
// We just declared a member function. If this member function
|
|
// has any default arguments, we'll need to parse them later.
|
|
LateParsedMethodDeclaration *LateMethod = 0;
|
|
DeclaratorChunk::FunctionTypeInfo &FTI
|
|
= DeclaratorInfo.getFunctionTypeInfo();
|
|
for (unsigned ParamIdx = 0; ParamIdx < FTI.NumArgs; ++ParamIdx) {
|
|
if (LateMethod || FTI.ArgInfo[ParamIdx].DefaultArgTokens) {
|
|
if (!LateMethod) {
|
|
// Push this method onto the stack of late-parsed method
|
|
// declarations.
|
|
LateMethod = new LateParsedMethodDeclaration(this, ThisDecl);
|
|
getCurrentClass().LateParsedDeclarations.push_back(LateMethod);
|
|
LateMethod->TemplateScope = getCurScope()->isTemplateParamScope();
|
|
|
|
// Add all of the parameters prior to this one (they don't
|
|
// have default arguments).
|
|
LateMethod->DefaultArgs.reserve(FTI.NumArgs);
|
|
for (unsigned I = 0; I < ParamIdx; ++I)
|
|
LateMethod->DefaultArgs.push_back(
|
|
LateParsedDefaultArgument(FTI.ArgInfo[I].Param));
|
|
}
|
|
|
|
// Add this parameter to the list of parameters (it or may
|
|
// not have a default argument).
|
|
LateMethod->DefaultArgs.push_back(
|
|
LateParsedDefaultArgument(FTI.ArgInfo[ParamIdx].Param,
|
|
FTI.ArgInfo[ParamIdx].DefaultArgTokens));
|
|
}
|
|
}
|
|
}
|
|
|
|
/// isCXX0XVirtSpecifier - Determine whether the next token is a C++0x
|
|
/// virt-specifier.
|
|
///
|
|
/// virt-specifier:
|
|
/// override
|
|
/// final
|
|
VirtSpecifiers::Specifier Parser::isCXX0XVirtSpecifier() const {
|
|
if (!getLang().CPlusPlus)
|
|
return VirtSpecifiers::VS_None;
|
|
|
|
if (Tok.is(tok::identifier)) {
|
|
IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
|
|
// Initialize the contextual keywords.
|
|
if (!Ident_final) {
|
|
Ident_final = &PP.getIdentifierTable().get("final");
|
|
Ident_override = &PP.getIdentifierTable().get("override");
|
|
}
|
|
|
|
if (II == Ident_override)
|
|
return VirtSpecifiers::VS_Override;
|
|
|
|
if (II == Ident_final)
|
|
return VirtSpecifiers::VS_Final;
|
|
}
|
|
|
|
return VirtSpecifiers::VS_None;
|
|
}
|
|
|
|
/// ParseOptionalCXX0XVirtSpecifierSeq - Parse a virt-specifier-seq.
|
|
///
|
|
/// virt-specifier-seq:
|
|
/// virt-specifier
|
|
/// virt-specifier-seq virt-specifier
|
|
void Parser::ParseOptionalCXX0XVirtSpecifierSeq(VirtSpecifiers &VS) {
|
|
while (true) {
|
|
VirtSpecifiers::Specifier Specifier = isCXX0XVirtSpecifier();
|
|
if (Specifier == VirtSpecifiers::VS_None)
|
|
return;
|
|
|
|
// C++ [class.mem]p8:
|
|
// A virt-specifier-seq shall contain at most one of each virt-specifier.
|
|
const char *PrevSpec = 0;
|
|
if (VS.SetSpecifier(Specifier, Tok.getLocation(), PrevSpec))
|
|
Diag(Tok.getLocation(), diag::err_duplicate_virt_specifier)
|
|
<< PrevSpec
|
|
<< FixItHint::CreateRemoval(Tok.getLocation());
|
|
|
|
if (!getLang().CPlusPlus0x)
|
|
Diag(Tok.getLocation(), diag::ext_override_control_keyword)
|
|
<< VirtSpecifiers::getSpecifierName(Specifier);
|
|
ConsumeToken();
|
|
}
|
|
}
|
|
|
|
/// isCXX0XFinalKeyword - Determine whether the next token is a C++0x
|
|
/// contextual 'final' keyword.
|
|
bool Parser::isCXX0XFinalKeyword() const {
|
|
if (!getLang().CPlusPlus)
|
|
return false;
|
|
|
|
if (!Tok.is(tok::identifier))
|
|
return false;
|
|
|
|
// Initialize the contextual keywords.
|
|
if (!Ident_final) {
|
|
Ident_final = &PP.getIdentifierTable().get("final");
|
|
Ident_override = &PP.getIdentifierTable().get("override");
|
|
}
|
|
|
|
return Tok.getIdentifierInfo() == Ident_final;
|
|
}
|
|
|
|
/// ParseCXXClassMemberDeclaration - Parse a C++ class member declaration.
|
|
///
|
|
/// member-declaration:
|
|
/// decl-specifier-seq[opt] member-declarator-list[opt] ';'
|
|
/// function-definition ';'[opt]
|
|
/// ::[opt] nested-name-specifier template[opt] unqualified-id ';'[TODO]
|
|
/// using-declaration [TODO]
|
|
/// [C++0x] static_assert-declaration
|
|
/// template-declaration
|
|
/// [GNU] '__extension__' member-declaration
|
|
///
|
|
/// member-declarator-list:
|
|
/// member-declarator
|
|
/// member-declarator-list ',' member-declarator
|
|
///
|
|
/// member-declarator:
|
|
/// declarator virt-specifier-seq[opt] pure-specifier[opt]
|
|
/// declarator constant-initializer[opt]
|
|
/// identifier[opt] ':' constant-expression
|
|
///
|
|
/// virt-specifier-seq:
|
|
/// virt-specifier
|
|
/// virt-specifier-seq virt-specifier
|
|
///
|
|
/// virt-specifier:
|
|
/// override
|
|
/// final
|
|
/// new
|
|
///
|
|
/// pure-specifier:
|
|
/// '= 0'
|
|
///
|
|
/// constant-initializer:
|
|
/// '=' constant-expression
|
|
///
|
|
void Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
|
|
const ParsedTemplateInfo &TemplateInfo,
|
|
ParsingDeclRAIIObject *TemplateDiags) {
|
|
if (Tok.is(tok::at)) {
|
|
if (getLang().ObjC1 && NextToken().isObjCAtKeyword(tok::objc_defs))
|
|
Diag(Tok, diag::err_at_defs_cxx);
|
|
else
|
|
Diag(Tok, diag::err_at_in_class);
|
|
|
|
ConsumeToken();
|
|
SkipUntil(tok::r_brace);
|
|
return;
|
|
}
|
|
|
|
// Access declarations.
|
|
if (!TemplateInfo.Kind &&
|
|
(Tok.is(tok::identifier) || Tok.is(tok::coloncolon)) &&
|
|
!TryAnnotateCXXScopeToken() &&
|
|
Tok.is(tok::annot_cxxscope)) {
|
|
bool isAccessDecl = false;
|
|
if (NextToken().is(tok::identifier))
|
|
isAccessDecl = GetLookAheadToken(2).is(tok::semi);
|
|
else
|
|
isAccessDecl = NextToken().is(tok::kw_operator);
|
|
|
|
if (isAccessDecl) {
|
|
// Collect the scope specifier token we annotated earlier.
|
|
CXXScopeSpec SS;
|
|
ParseOptionalCXXScopeSpecifier(SS, ParsedType(), false);
|
|
|
|
// Try to parse an unqualified-id.
|
|
UnqualifiedId Name;
|
|
if (ParseUnqualifiedId(SS, false, true, true, ParsedType(), Name)) {
|
|
SkipUntil(tok::semi);
|
|
return;
|
|
}
|
|
|
|
// TODO: recover from mistakenly-qualified operator declarations.
|
|
if (ExpectAndConsume(tok::semi,
|
|
diag::err_expected_semi_after,
|
|
"access declaration",
|
|
tok::semi))
|
|
return;
|
|
|
|
Actions.ActOnUsingDeclaration(getCurScope(), AS,
|
|
false, SourceLocation(),
|
|
SS, Name,
|
|
/* AttrList */ 0,
|
|
/* IsTypeName */ false,
|
|
SourceLocation());
|
|
return;
|
|
}
|
|
}
|
|
|
|
// static_assert-declaration
|
|
if (Tok.is(tok::kw_static_assert) || Tok.is(tok::kw__Static_assert)) {
|
|
// FIXME: Check for templates
|
|
SourceLocation DeclEnd;
|
|
ParseStaticAssertDeclaration(DeclEnd);
|
|
return;
|
|
}
|
|
|
|
if (Tok.is(tok::kw_template)) {
|
|
assert(!TemplateInfo.TemplateParams &&
|
|
"Nested template improperly parsed?");
|
|
SourceLocation DeclEnd;
|
|
ParseDeclarationStartingWithTemplate(Declarator::MemberContext, DeclEnd,
|
|
AS);
|
|
return;
|
|
}
|
|
|
|
// Handle: member-declaration ::= '__extension__' member-declaration
|
|
if (Tok.is(tok::kw___extension__)) {
|
|
// __extension__ silences extension warnings in the subexpression.
|
|
ExtensionRAIIObject O(Diags); // Use RAII to do this.
|
|
ConsumeToken();
|
|
return ParseCXXClassMemberDeclaration(AS, TemplateInfo, TemplateDiags);
|
|
}
|
|
|
|
// Don't parse FOO:BAR as if it were a typo for FOO::BAR, in this context it
|
|
// is a bitfield.
|
|
ColonProtectionRAIIObject X(*this);
|
|
|
|
ParsedAttributesWithRange attrs(AttrFactory);
|
|
// Optional C++0x attribute-specifier
|
|
MaybeParseCXX0XAttributes(attrs);
|
|
MaybeParseMicrosoftAttributes(attrs);
|
|
|
|
if (Tok.is(tok::kw_using)) {
|
|
ProhibitAttributes(attrs);
|
|
|
|
// Eat 'using'.
|
|
SourceLocation UsingLoc = ConsumeToken();
|
|
|
|
if (Tok.is(tok::kw_namespace)) {
|
|
Diag(UsingLoc, diag::err_using_namespace_in_class);
|
|
SkipUntil(tok::semi, true, true);
|
|
} else {
|
|
SourceLocation DeclEnd;
|
|
// Otherwise, it must be a using-declaration or an alias-declaration.
|
|
ParseUsingDeclaration(Declarator::MemberContext, TemplateInfo,
|
|
UsingLoc, DeclEnd, AS);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// decl-specifier-seq:
|
|
// Parse the common declaration-specifiers piece.
|
|
ParsingDeclSpec DS(*this, TemplateDiags);
|
|
DS.takeAttributesFrom(attrs);
|
|
ParseDeclarationSpecifiers(DS, TemplateInfo, AS, DSC_class);
|
|
|
|
MultiTemplateParamsArg TemplateParams(Actions,
|
|
TemplateInfo.TemplateParams? TemplateInfo.TemplateParams->data() : 0,
|
|
TemplateInfo.TemplateParams? TemplateInfo.TemplateParams->size() : 0);
|
|
|
|
if (Tok.is(tok::semi)) {
|
|
ConsumeToken();
|
|
Decl *TheDecl =
|
|
Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS, DS, TemplateParams);
|
|
DS.complete(TheDecl);
|
|
return;
|
|
}
|
|
|
|
ParsingDeclarator DeclaratorInfo(*this, DS, Declarator::MemberContext);
|
|
VirtSpecifiers VS;
|
|
|
|
if (Tok.isNot(tok::colon)) {
|
|
// Don't parse FOO:BAR as if it were a typo for FOO::BAR.
|
|
ColonProtectionRAIIObject X(*this);
|
|
|
|
// Parse the first declarator.
|
|
ParseDeclarator(DeclaratorInfo);
|
|
// Error parsing the declarator?
|
|
if (!DeclaratorInfo.hasName()) {
|
|
// If so, skip until the semi-colon or a }.
|
|
SkipUntil(tok::r_brace, true, true);
|
|
if (Tok.is(tok::semi))
|
|
ConsumeToken();
|
|
return;
|
|
}
|
|
|
|
ParseOptionalCXX0XVirtSpecifierSeq(VS);
|
|
|
|
// If attributes exist after the declarator, but before an '{', parse them.
|
|
MaybeParseGNUAttributes(DeclaratorInfo);
|
|
|
|
// function-definition:
|
|
if (Tok.is(tok::l_brace)
|
|
|| (DeclaratorInfo.isFunctionDeclarator() &&
|
|
(Tok.is(tok::colon) || Tok.is(tok::kw_try)))) {
|
|
if (!DeclaratorInfo.isFunctionDeclarator()) {
|
|
Diag(Tok, diag::err_func_def_no_params);
|
|
ConsumeBrace();
|
|
SkipUntil(tok::r_brace, true);
|
|
|
|
// Consume the optional ';'
|
|
if (Tok.is(tok::semi))
|
|
ConsumeToken();
|
|
return;
|
|
}
|
|
|
|
if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
|
|
Diag(Tok, diag::err_function_declared_typedef);
|
|
// This recovery skips the entire function body. It would be nice
|
|
// to simply call ParseCXXInlineMethodDef() below, however Sema
|
|
// assumes the declarator represents a function, not a typedef.
|
|
ConsumeBrace();
|
|
SkipUntil(tok::r_brace, true);
|
|
|
|
// Consume the optional ';'
|
|
if (Tok.is(tok::semi))
|
|
ConsumeToken();
|
|
return;
|
|
}
|
|
|
|
ParseCXXInlineMethodDef(AS, DeclaratorInfo, TemplateInfo, VS);
|
|
// Consume the optional ';'
|
|
if (Tok.is(tok::semi))
|
|
ConsumeToken();
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
// member-declarator-list:
|
|
// member-declarator
|
|
// member-declarator-list ',' member-declarator
|
|
|
|
llvm::SmallVector<Decl *, 8> DeclsInGroup;
|
|
ExprResult BitfieldSize;
|
|
ExprResult Init;
|
|
bool Deleted = false;
|
|
SourceLocation DefLoc;
|
|
|
|
while (1) {
|
|
// member-declarator:
|
|
// declarator pure-specifier[opt]
|
|
// declarator constant-initializer[opt]
|
|
// identifier[opt] ':' constant-expression
|
|
if (Tok.is(tok::colon)) {
|
|
ConsumeToken();
|
|
BitfieldSize = ParseConstantExpression();
|
|
if (BitfieldSize.isInvalid())
|
|
SkipUntil(tok::comma, true, true);
|
|
}
|
|
|
|
ParseOptionalCXX0XVirtSpecifierSeq(VS);
|
|
|
|
// pure-specifier:
|
|
// '= 0'
|
|
//
|
|
// constant-initializer:
|
|
// '=' constant-expression
|
|
//
|
|
// defaulted/deleted function-definition:
|
|
// '=' 'default' [TODO]
|
|
// '=' 'delete'
|
|
if (Tok.is(tok::equal)) {
|
|
ConsumeToken();
|
|
if (Tok.is(tok::kw_delete)) {
|
|
if (!getLang().CPlusPlus0x)
|
|
Diag(Tok, diag::warn_deleted_function_accepted_as_extension);
|
|
ConsumeToken();
|
|
Deleted = true;
|
|
} else if (Tok.is(tok::kw_default)) {
|
|
if (!getLang().CPlusPlus0x)
|
|
Diag(Tok, diag::warn_defaulted_function_accepted_as_extension);
|
|
DefLoc = ConsumeToken();
|
|
} else {
|
|
Init = ParseInitializer();
|
|
if (Init.isInvalid())
|
|
SkipUntil(tok::comma, true, true);
|
|
}
|
|
}
|
|
|
|
// If a simple-asm-expr is present, parse it.
|
|
if (Tok.is(tok::kw_asm)) {
|
|
SourceLocation Loc;
|
|
ExprResult AsmLabel(ParseSimpleAsm(&Loc));
|
|
if (AsmLabel.isInvalid())
|
|
SkipUntil(tok::comma, true, true);
|
|
|
|
DeclaratorInfo.setAsmLabel(AsmLabel.release());
|
|
DeclaratorInfo.SetRangeEnd(Loc);
|
|
}
|
|
|
|
// If attributes exist after the declarator, parse them.
|
|
MaybeParseGNUAttributes(DeclaratorInfo);
|
|
|
|
// NOTE: If Sema is the Action module and declarator is an instance field,
|
|
// this call will *not* return the created decl; It will return null.
|
|
// See Sema::ActOnCXXMemberDeclarator for details.
|
|
|
|
Decl *ThisDecl = 0;
|
|
if (DS.isFriendSpecified()) {
|
|
if (DefLoc.isValid())
|
|
Diag(DefLoc, diag::err_default_special_members);
|
|
|
|
// TODO: handle initializers, bitfields, 'delete'
|
|
ThisDecl = Actions.ActOnFriendFunctionDecl(getCurScope(), DeclaratorInfo,
|
|
/*IsDefinition*/ false,
|
|
move(TemplateParams));
|
|
} else {
|
|
ThisDecl = Actions.ActOnCXXMemberDeclarator(getCurScope(), AS,
|
|
DeclaratorInfo,
|
|
move(TemplateParams),
|
|
BitfieldSize.release(),
|
|
VS, Init.release(),
|
|
/*IsDefinition*/Deleted,
|
|
Deleted, DefLoc);
|
|
}
|
|
if (ThisDecl)
|
|
DeclsInGroup.push_back(ThisDecl);
|
|
|
|
if (DeclaratorInfo.isFunctionDeclarator() &&
|
|
DeclaratorInfo.getDeclSpec().getStorageClassSpec()
|
|
!= DeclSpec::SCS_typedef) {
|
|
HandleMemberFunctionDefaultArgs(DeclaratorInfo, ThisDecl);
|
|
}
|
|
|
|
DeclaratorInfo.complete(ThisDecl);
|
|
|
|
// If we don't have a comma, it is either the end of the list (a ';')
|
|
// or an error, bail out.
|
|
if (Tok.isNot(tok::comma))
|
|
break;
|
|
|
|
// Consume the comma.
|
|
ConsumeToken();
|
|
|
|
// Parse the next declarator.
|
|
DeclaratorInfo.clear();
|
|
VS.clear();
|
|
BitfieldSize = 0;
|
|
Init = 0;
|
|
Deleted = false;
|
|
DefLoc = SourceLocation();
|
|
|
|
// Attributes are only allowed on the second declarator.
|
|
MaybeParseGNUAttributes(DeclaratorInfo);
|
|
|
|
if (Tok.isNot(tok::colon))
|
|
ParseDeclarator(DeclaratorInfo);
|
|
}
|
|
|
|
if (ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list)) {
|
|
// Skip to end of block or statement.
|
|
SkipUntil(tok::r_brace, true, true);
|
|
// If we stopped at a ';', eat it.
|
|
if (Tok.is(tok::semi)) ConsumeToken();
|
|
return;
|
|
}
|
|
|
|
Actions.FinalizeDeclaratorGroup(getCurScope(), DS, DeclsInGroup.data(),
|
|
DeclsInGroup.size());
|
|
}
|
|
|
|
/// ParseCXXMemberSpecification - Parse the class definition.
|
|
///
|
|
/// member-specification:
|
|
/// member-declaration member-specification[opt]
|
|
/// access-specifier ':' member-specification[opt]
|
|
///
|
|
void Parser::ParseCXXMemberSpecification(SourceLocation RecordLoc,
|
|
unsigned TagType, Decl *TagDecl) {
|
|
assert((TagType == DeclSpec::TST_struct ||
|
|
TagType == DeclSpec::TST_union ||
|
|
TagType == DeclSpec::TST_class) && "Invalid TagType!");
|
|
|
|
PrettyDeclStackTraceEntry CrashInfo(Actions, TagDecl, RecordLoc,
|
|
"parsing struct/union/class body");
|
|
|
|
// Determine whether this is a non-nested class. Note that local
|
|
// classes are *not* considered to be nested classes.
|
|
bool NonNestedClass = true;
|
|
if (!ClassStack.empty()) {
|
|
for (const Scope *S = getCurScope(); S; S = S->getParent()) {
|
|
if (S->isClassScope()) {
|
|
// We're inside a class scope, so this is a nested class.
|
|
NonNestedClass = false;
|
|
break;
|
|
}
|
|
|
|
if ((S->getFlags() & Scope::FnScope)) {
|
|
// If we're in a function or function template declared in the
|
|
// body of a class, then this is a local class rather than a
|
|
// nested class.
|
|
const Scope *Parent = S->getParent();
|
|
if (Parent->isTemplateParamScope())
|
|
Parent = Parent->getParent();
|
|
if (Parent->isClassScope())
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Enter a scope for the class.
|
|
ParseScope ClassScope(this, Scope::ClassScope|Scope::DeclScope);
|
|
|
|
// Note that we are parsing a new (potentially-nested) class definition.
|
|
ParsingClassDefinition ParsingDef(*this, TagDecl, NonNestedClass);
|
|
|
|
if (TagDecl)
|
|
Actions.ActOnTagStartDefinition(getCurScope(), TagDecl);
|
|
|
|
SourceLocation FinalLoc;
|
|
|
|
// Parse the optional 'final' keyword.
|
|
if (getLang().CPlusPlus && Tok.is(tok::identifier)) {
|
|
IdentifierInfo *II = Tok.getIdentifierInfo();
|
|
|
|
// Initialize the contextual keywords.
|
|
if (!Ident_final) {
|
|
Ident_final = &PP.getIdentifierTable().get("final");
|
|
Ident_override = &PP.getIdentifierTable().get("override");
|
|
}
|
|
|
|
if (II == Ident_final)
|
|
FinalLoc = ConsumeToken();
|
|
|
|
if (!getLang().CPlusPlus0x)
|
|
Diag(FinalLoc, diag::ext_override_control_keyword) << "final";
|
|
}
|
|
|
|
if (Tok.is(tok::colon)) {
|
|
ParseBaseClause(TagDecl);
|
|
|
|
if (!Tok.is(tok::l_brace)) {
|
|
Diag(Tok, diag::err_expected_lbrace_after_base_specifiers);
|
|
|
|
if (TagDecl)
|
|
Actions.ActOnTagDefinitionError(getCurScope(), TagDecl);
|
|
return;
|
|
}
|
|
}
|
|
|
|
assert(Tok.is(tok::l_brace));
|
|
|
|
SourceLocation LBraceLoc = ConsumeBrace();
|
|
|
|
if (TagDecl)
|
|
Actions.ActOnStartCXXMemberDeclarations(getCurScope(), TagDecl, FinalLoc,
|
|
LBraceLoc);
|
|
|
|
// C++ 11p3: Members of a class defined with the keyword class are private
|
|
// by default. Members of a class defined with the keywords struct or union
|
|
// are public by default.
|
|
AccessSpecifier CurAS;
|
|
if (TagType == DeclSpec::TST_class)
|
|
CurAS = AS_private;
|
|
else
|
|
CurAS = AS_public;
|
|
|
|
SourceLocation RBraceLoc;
|
|
if (TagDecl) {
|
|
// While we still have something to read, read the member-declarations.
|
|
while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) {
|
|
// Each iteration of this loop reads one member-declaration.
|
|
|
|
// Check for extraneous top-level semicolon.
|
|
if (Tok.is(tok::semi)) {
|
|
Diag(Tok, diag::ext_extra_struct_semi)
|
|
<< DeclSpec::getSpecifierName((DeclSpec::TST)TagType)
|
|
<< FixItHint::CreateRemoval(Tok.getLocation());
|
|
ConsumeToken();
|
|
continue;
|
|
}
|
|
|
|
AccessSpecifier AS = getAccessSpecifierIfPresent();
|
|
if (AS != AS_none) {
|
|
// Current token is a C++ access specifier.
|
|
CurAS = AS;
|
|
SourceLocation ASLoc = Tok.getLocation();
|
|
ConsumeToken();
|
|
if (Tok.is(tok::colon))
|
|
Actions.ActOnAccessSpecifier(AS, ASLoc, Tok.getLocation());
|
|
else
|
|
Diag(Tok, diag::err_expected_colon);
|
|
ConsumeToken();
|
|
continue;
|
|
}
|
|
|
|
// FIXME: Make sure we don't have a template here.
|
|
|
|
// Parse all the comma separated declarators.
|
|
ParseCXXClassMemberDeclaration(CurAS);
|
|
}
|
|
|
|
RBraceLoc = MatchRHSPunctuation(tok::r_brace, LBraceLoc);
|
|
} else {
|
|
SkipUntil(tok::r_brace, false, false);
|
|
}
|
|
|
|
// If attributes exist after class contents, parse them.
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseGNUAttributes(attrs);
|
|
|
|
if (TagDecl)
|
|
Actions.ActOnFinishCXXMemberSpecification(getCurScope(), RecordLoc, TagDecl,
|
|
LBraceLoc, RBraceLoc,
|
|
attrs.getList());
|
|
|
|
// C++ 9.2p2: Within the class member-specification, the class is regarded as
|
|
// complete within function bodies, default arguments,
|
|
// exception-specifications, and constructor ctor-initializers (including
|
|
// such things in nested classes).
|
|
//
|
|
// FIXME: Only function bodies and constructor ctor-initializers are
|
|
// parsed correctly, fix the rest.
|
|
if (TagDecl && NonNestedClass) {
|
|
// We are not inside a nested class. This class and its nested classes
|
|
// are complete and we can parse the delayed portions of method
|
|
// declarations and the lexed inline method definitions.
|
|
SourceLocation SavedPrevTokLocation = PrevTokLocation;
|
|
ParseLexedMethodDeclarations(getCurrentClass());
|
|
ParseLexedMethodDefs(getCurrentClass());
|
|
PrevTokLocation = SavedPrevTokLocation;
|
|
}
|
|
|
|
if (TagDecl)
|
|
Actions.ActOnTagFinishDefinition(getCurScope(), TagDecl, RBraceLoc);
|
|
|
|
// Leave the class scope.
|
|
ParsingDef.Pop();
|
|
ClassScope.Exit();
|
|
}
|
|
|
|
/// ParseConstructorInitializer - Parse a C++ constructor initializer,
|
|
/// which explicitly initializes the members or base classes of a
|
|
/// class (C++ [class.base.init]). For example, the three initializers
|
|
/// after the ':' in the Derived constructor below:
|
|
///
|
|
/// @code
|
|
/// class Base { };
|
|
/// class Derived : Base {
|
|
/// int x;
|
|
/// float f;
|
|
/// public:
|
|
/// Derived(float f) : Base(), x(17), f(f) { }
|
|
/// };
|
|
/// @endcode
|
|
///
|
|
/// [C++] ctor-initializer:
|
|
/// ':' mem-initializer-list
|
|
///
|
|
/// [C++] mem-initializer-list:
|
|
/// mem-initializer ...[opt]
|
|
/// mem-initializer ...[opt] , mem-initializer-list
|
|
void Parser::ParseConstructorInitializer(Decl *ConstructorDecl) {
|
|
assert(Tok.is(tok::colon) && "Constructor initializer always starts with ':'");
|
|
|
|
// Poison the SEH identifiers so they are flagged as illegal in constructor initializers
|
|
PoisonSEHIdentifiersRAIIObject PoisonSEHIdentifiers(*this, true);
|
|
SourceLocation ColonLoc = ConsumeToken();
|
|
|
|
llvm::SmallVector<CXXCtorInitializer*, 4> MemInitializers;
|
|
bool AnyErrors = false;
|
|
|
|
do {
|
|
if (Tok.is(tok::code_completion)) {
|
|
Actions.CodeCompleteConstructorInitializer(ConstructorDecl,
|
|
MemInitializers.data(),
|
|
MemInitializers.size());
|
|
ConsumeCodeCompletionToken();
|
|
} else {
|
|
MemInitResult MemInit = ParseMemInitializer(ConstructorDecl);
|
|
if (!MemInit.isInvalid())
|
|
MemInitializers.push_back(MemInit.get());
|
|
else
|
|
AnyErrors = true;
|
|
}
|
|
|
|
if (Tok.is(tok::comma))
|
|
ConsumeToken();
|
|
else if (Tok.is(tok::l_brace))
|
|
break;
|
|
// If the next token looks like a base or member initializer, assume that
|
|
// we're just missing a comma.
|
|
else if (Tok.is(tok::identifier) || Tok.is(tok::coloncolon)) {
|
|
SourceLocation Loc = PP.getLocForEndOfToken(PrevTokLocation);
|
|
Diag(Loc, diag::err_ctor_init_missing_comma)
|
|
<< FixItHint::CreateInsertion(Loc, ", ");
|
|
} else {
|
|
// Skip over garbage, until we get to '{'. Don't eat the '{'.
|
|
Diag(Tok.getLocation(), diag::err_expected_lbrace_or_comma);
|
|
SkipUntil(tok::l_brace, true, true);
|
|
break;
|
|
}
|
|
} while (true);
|
|
|
|
Actions.ActOnMemInitializers(ConstructorDecl, ColonLoc,
|
|
MemInitializers.data(), MemInitializers.size(),
|
|
AnyErrors);
|
|
}
|
|
|
|
/// ParseMemInitializer - Parse a C++ member initializer, which is
|
|
/// part of a constructor initializer that explicitly initializes one
|
|
/// member or base class (C++ [class.base.init]). See
|
|
/// ParseConstructorInitializer for an example.
|
|
///
|
|
/// [C++] mem-initializer:
|
|
/// mem-initializer-id '(' expression-list[opt] ')'
|
|
///
|
|
/// [C++] mem-initializer-id:
|
|
/// '::'[opt] nested-name-specifier[opt] class-name
|
|
/// identifier
|
|
Parser::MemInitResult Parser::ParseMemInitializer(Decl *ConstructorDecl) {
|
|
// parse '::'[opt] nested-name-specifier[opt]
|
|
CXXScopeSpec SS;
|
|
ParseOptionalCXXScopeSpecifier(SS, ParsedType(), false);
|
|
ParsedType TemplateTypeTy;
|
|
if (Tok.is(tok::annot_template_id)) {
|
|
TemplateIdAnnotation *TemplateId
|
|
= static_cast<TemplateIdAnnotation *>(Tok.getAnnotationValue());
|
|
if (TemplateId->Kind == TNK_Type_template ||
|
|
TemplateId->Kind == TNK_Dependent_template_name) {
|
|
AnnotateTemplateIdTokenAsType();
|
|
assert(Tok.is(tok::annot_typename) && "template-id -> type failed");
|
|
TemplateTypeTy = getTypeAnnotation(Tok);
|
|
}
|
|
}
|
|
if (!TemplateTypeTy && Tok.isNot(tok::identifier)) {
|
|
Diag(Tok, diag::err_expected_member_or_base_name);
|
|
return true;
|
|
}
|
|
|
|
// Get the identifier. This may be a member name or a class name,
|
|
// but we'll let the semantic analysis determine which it is.
|
|
IdentifierInfo *II = Tok.is(tok::identifier) ? Tok.getIdentifierInfo() : 0;
|
|
SourceLocation IdLoc = ConsumeToken();
|
|
|
|
// Parse the '('.
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
Diag(Tok, diag::err_expected_lparen);
|
|
return true;
|
|
}
|
|
SourceLocation LParenLoc = ConsumeParen();
|
|
|
|
// Parse the optional expression-list.
|
|
ExprVector ArgExprs(Actions);
|
|
CommaLocsTy CommaLocs;
|
|
if (Tok.isNot(tok::r_paren) && ParseExpressionList(ArgExprs, CommaLocs)) {
|
|
SkipUntil(tok::r_paren);
|
|
return true;
|
|
}
|
|
|
|
SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc);
|
|
|
|
SourceLocation EllipsisLoc;
|
|
if (Tok.is(tok::ellipsis))
|
|
EllipsisLoc = ConsumeToken();
|
|
|
|
return Actions.ActOnMemInitializer(ConstructorDecl, getCurScope(), SS, II,
|
|
TemplateTypeTy, IdLoc,
|
|
LParenLoc, ArgExprs.take(),
|
|
ArgExprs.size(), RParenLoc,
|
|
EllipsisLoc);
|
|
}
|
|
|
|
/// \brief Parse a C++ exception-specification if present (C++0x [except.spec]).
|
|
///
|
|
/// exception-specification:
|
|
/// dynamic-exception-specification
|
|
/// noexcept-specification
|
|
///
|
|
/// noexcept-specification:
|
|
/// 'noexcept'
|
|
/// 'noexcept' '(' constant-expression ')'
|
|
ExceptionSpecificationType
|
|
Parser::MaybeParseExceptionSpecification(SourceRange &SpecificationRange,
|
|
llvm::SmallVectorImpl<ParsedType> &DynamicExceptions,
|
|
llvm::SmallVectorImpl<SourceRange> &DynamicExceptionRanges,
|
|
ExprResult &NoexceptExpr) {
|
|
ExceptionSpecificationType Result = EST_None;
|
|
|
|
// See if there's a dynamic specification.
|
|
if (Tok.is(tok::kw_throw)) {
|
|
Result = ParseDynamicExceptionSpecification(SpecificationRange,
|
|
DynamicExceptions,
|
|
DynamicExceptionRanges);
|
|
assert(DynamicExceptions.size() == DynamicExceptionRanges.size() &&
|
|
"Produced different number of exception types and ranges.");
|
|
}
|
|
|
|
// If there's no noexcept specification, we're done.
|
|
if (Tok.isNot(tok::kw_noexcept))
|
|
return Result;
|
|
|
|
// If we already had a dynamic specification, parse the noexcept for,
|
|
// recovery, but emit a diagnostic and don't store the results.
|
|
SourceRange NoexceptRange;
|
|
ExceptionSpecificationType NoexceptType = EST_None;
|
|
|
|
SourceLocation KeywordLoc = ConsumeToken();
|
|
if (Tok.is(tok::l_paren)) {
|
|
// There is an argument.
|
|
SourceLocation LParenLoc = ConsumeParen();
|
|
NoexceptType = EST_ComputedNoexcept;
|
|
NoexceptExpr = ParseConstantExpression();
|
|
// The argument must be contextually convertible to bool. We use
|
|
// ActOnBooleanCondition for this purpose.
|
|
if (!NoexceptExpr.isInvalid())
|
|
NoexceptExpr = Actions.ActOnBooleanCondition(getCurScope(), KeywordLoc,
|
|
NoexceptExpr.get());
|
|
SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc);
|
|
NoexceptRange = SourceRange(KeywordLoc, RParenLoc);
|
|
} else {
|
|
// There is no argument.
|
|
NoexceptType = EST_BasicNoexcept;
|
|
NoexceptRange = SourceRange(KeywordLoc, KeywordLoc);
|
|
}
|
|
|
|
if (Result == EST_None) {
|
|
SpecificationRange = NoexceptRange;
|
|
Result = NoexceptType;
|
|
|
|
// If there's a dynamic specification after a noexcept specification,
|
|
// parse that and ignore the results.
|
|
if (Tok.is(tok::kw_throw)) {
|
|
Diag(Tok.getLocation(), diag::err_dynamic_and_noexcept_specification);
|
|
ParseDynamicExceptionSpecification(NoexceptRange, DynamicExceptions,
|
|
DynamicExceptionRanges);
|
|
}
|
|
} else {
|
|
Diag(Tok.getLocation(), diag::err_dynamic_and_noexcept_specification);
|
|
}
|
|
|
|
return Result;
|
|
}
|
|
|
|
/// ParseDynamicExceptionSpecification - Parse a C++
|
|
/// dynamic-exception-specification (C++ [except.spec]).
|
|
///
|
|
/// dynamic-exception-specification:
|
|
/// 'throw' '(' type-id-list [opt] ')'
|
|
/// [MS] 'throw' '(' '...' ')'
|
|
///
|
|
/// type-id-list:
|
|
/// type-id ... [opt]
|
|
/// type-id-list ',' type-id ... [opt]
|
|
///
|
|
ExceptionSpecificationType Parser::ParseDynamicExceptionSpecification(
|
|
SourceRange &SpecificationRange,
|
|
llvm::SmallVectorImpl<ParsedType> &Exceptions,
|
|
llvm::SmallVectorImpl<SourceRange> &Ranges) {
|
|
assert(Tok.is(tok::kw_throw) && "expected throw");
|
|
|
|
SpecificationRange.setBegin(ConsumeToken());
|
|
|
|
if (!Tok.is(tok::l_paren)) {
|
|
Diag(Tok, diag::err_expected_lparen_after) << "throw";
|
|
SpecificationRange.setEnd(SpecificationRange.getBegin());
|
|
return EST_DynamicNone;
|
|
}
|
|
SourceLocation LParenLoc = ConsumeParen();
|
|
|
|
// Parse throw(...), a Microsoft extension that means "this function
|
|
// can throw anything".
|
|
if (Tok.is(tok::ellipsis)) {
|
|
SourceLocation EllipsisLoc = ConsumeToken();
|
|
if (!getLang().Microsoft)
|
|
Diag(EllipsisLoc, diag::ext_ellipsis_exception_spec);
|
|
SourceLocation RParenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc);
|
|
SpecificationRange.setEnd(RParenLoc);
|
|
return EST_MSAny;
|
|
}
|
|
|
|
// Parse the sequence of type-ids.
|
|
SourceRange Range;
|
|
while (Tok.isNot(tok::r_paren)) {
|
|
TypeResult Res(ParseTypeName(&Range));
|
|
|
|
if (Tok.is(tok::ellipsis)) {
|
|
// C++0x [temp.variadic]p5:
|
|
// - In a dynamic-exception-specification (15.4); the pattern is a
|
|
// type-id.
|
|
SourceLocation Ellipsis = ConsumeToken();
|
|
Range.setEnd(Ellipsis);
|
|
if (!Res.isInvalid())
|
|
Res = Actions.ActOnPackExpansion(Res.get(), Ellipsis);
|
|
}
|
|
|
|
if (!Res.isInvalid()) {
|
|
Exceptions.push_back(Res.get());
|
|
Ranges.push_back(Range);
|
|
}
|
|
|
|
if (Tok.is(tok::comma))
|
|
ConsumeToken();
|
|
else
|
|
break;
|
|
}
|
|
|
|
SpecificationRange.setEnd(MatchRHSPunctuation(tok::r_paren, LParenLoc));
|
|
return Exceptions.empty() ? EST_DynamicNone : EST_Dynamic;
|
|
}
|
|
|
|
/// ParseTrailingReturnType - Parse a trailing return type on a new-style
|
|
/// function declaration.
|
|
TypeResult Parser::ParseTrailingReturnType() {
|
|
assert(Tok.is(tok::arrow) && "expected arrow");
|
|
|
|
ConsumeToken();
|
|
|
|
// FIXME: Need to suppress declarations when parsing this typename.
|
|
// Otherwise in this function definition:
|
|
//
|
|
// auto f() -> struct X {}
|
|
//
|
|
// struct X is parsed as class definition because of the trailing
|
|
// brace.
|
|
|
|
SourceRange Range;
|
|
return ParseTypeName(&Range);
|
|
}
|
|
|
|
/// \brief We have just started parsing the definition of a new class,
|
|
/// so push that class onto our stack of classes that is currently
|
|
/// being parsed.
|
|
Sema::ParsingClassState
|
|
Parser::PushParsingClass(Decl *ClassDecl, bool NonNestedClass) {
|
|
assert((NonNestedClass || !ClassStack.empty()) &&
|
|
"Nested class without outer class");
|
|
ClassStack.push(new ParsingClass(ClassDecl, NonNestedClass));
|
|
return Actions.PushParsingClass();
|
|
}
|
|
|
|
/// \brief Deallocate the given parsed class and all of its nested
|
|
/// classes.
|
|
void Parser::DeallocateParsedClasses(Parser::ParsingClass *Class) {
|
|
for (unsigned I = 0, N = Class->LateParsedDeclarations.size(); I != N; ++I)
|
|
delete Class->LateParsedDeclarations[I];
|
|
delete Class;
|
|
}
|
|
|
|
/// \brief Pop the top class of the stack of classes that are
|
|
/// currently being parsed.
|
|
///
|
|
/// This routine should be called when we have finished parsing the
|
|
/// definition of a class, but have not yet popped the Scope
|
|
/// associated with the class's definition.
|
|
///
|
|
/// \returns true if the class we've popped is a top-level class,
|
|
/// false otherwise.
|
|
void Parser::PopParsingClass(Sema::ParsingClassState state) {
|
|
assert(!ClassStack.empty() && "Mismatched push/pop for class parsing");
|
|
|
|
Actions.PopParsingClass(state);
|
|
|
|
ParsingClass *Victim = ClassStack.top();
|
|
ClassStack.pop();
|
|
if (Victim->TopLevelClass) {
|
|
// Deallocate all of the nested classes of this class,
|
|
// recursively: we don't need to keep any of this information.
|
|
DeallocateParsedClasses(Victim);
|
|
return;
|
|
}
|
|
assert(!ClassStack.empty() && "Missing top-level class?");
|
|
|
|
if (Victim->LateParsedDeclarations.empty()) {
|
|
// The victim is a nested class, but we will not need to perform
|
|
// any processing after the definition of this class since it has
|
|
// no members whose handling was delayed. Therefore, we can just
|
|
// remove this nested class.
|
|
DeallocateParsedClasses(Victim);
|
|
return;
|
|
}
|
|
|
|
// This nested class has some members that will need to be processed
|
|
// after the top-level class is completely defined. Therefore, add
|
|
// it to the list of nested classes within its parent.
|
|
assert(getCurScope()->isClassScope() && "Nested class outside of class scope?");
|
|
ClassStack.top()->LateParsedDeclarations.push_back(new LateParsedClass(this, Victim));
|
|
Victim->TemplateScope = getCurScope()->getParent()->isTemplateParamScope();
|
|
}
|
|
|
|
/// ParseCXX0XAttributes - Parse a C++0x attribute-specifier. Currently only
|
|
/// parses standard attributes.
|
|
///
|
|
/// [C++0x] attribute-specifier:
|
|
/// '[' '[' attribute-list ']' ']'
|
|
///
|
|
/// [C++0x] attribute-list:
|
|
/// attribute[opt]
|
|
/// attribute-list ',' attribute[opt]
|
|
///
|
|
/// [C++0x] attribute:
|
|
/// attribute-token attribute-argument-clause[opt]
|
|
///
|
|
/// [C++0x] attribute-token:
|
|
/// identifier
|
|
/// attribute-scoped-token
|
|
///
|
|
/// [C++0x] attribute-scoped-token:
|
|
/// attribute-namespace '::' identifier
|
|
///
|
|
/// [C++0x] attribute-namespace:
|
|
/// identifier
|
|
///
|
|
/// [C++0x] attribute-argument-clause:
|
|
/// '(' balanced-token-seq ')'
|
|
///
|
|
/// [C++0x] balanced-token-seq:
|
|
/// balanced-token
|
|
/// balanced-token-seq balanced-token
|
|
///
|
|
/// [C++0x] balanced-token:
|
|
/// '(' balanced-token-seq ')'
|
|
/// '[' balanced-token-seq ']'
|
|
/// '{' balanced-token-seq '}'
|
|
/// any token but '(', ')', '[', ']', '{', or '}'
|
|
void Parser::ParseCXX0XAttributes(ParsedAttributesWithRange &attrs,
|
|
SourceLocation *endLoc) {
|
|
assert(Tok.is(tok::l_square) && NextToken().is(tok::l_square)
|
|
&& "Not a C++0x attribute list");
|
|
|
|
SourceLocation StartLoc = Tok.getLocation(), Loc;
|
|
|
|
ConsumeBracket();
|
|
ConsumeBracket();
|
|
|
|
if (Tok.is(tok::comma)) {
|
|
Diag(Tok.getLocation(), diag::err_expected_ident);
|
|
ConsumeToken();
|
|
}
|
|
|
|
while (Tok.is(tok::identifier) || Tok.is(tok::comma)) {
|
|
// attribute not present
|
|
if (Tok.is(tok::comma)) {
|
|
ConsumeToken();
|
|
continue;
|
|
}
|
|
|
|
IdentifierInfo *ScopeName = 0, *AttrName = Tok.getIdentifierInfo();
|
|
SourceLocation ScopeLoc, AttrLoc = ConsumeToken();
|
|
|
|
// scoped attribute
|
|
if (Tok.is(tok::coloncolon)) {
|
|
ConsumeToken();
|
|
|
|
if (!Tok.is(tok::identifier)) {
|
|
Diag(Tok.getLocation(), diag::err_expected_ident);
|
|
SkipUntil(tok::r_square, tok::comma, true, true);
|
|
continue;
|
|
}
|
|
|
|
ScopeName = AttrName;
|
|
ScopeLoc = AttrLoc;
|
|
|
|
AttrName = Tok.getIdentifierInfo();
|
|
AttrLoc = ConsumeToken();
|
|
}
|
|
|
|
bool AttrParsed = false;
|
|
// No scoped names are supported; ideally we could put all non-standard
|
|
// attributes into namespaces.
|
|
if (!ScopeName) {
|
|
switch(AttributeList::getKind(AttrName))
|
|
{
|
|
// No arguments
|
|
case AttributeList::AT_carries_dependency:
|
|
case AttributeList::AT_noreturn: {
|
|
if (Tok.is(tok::l_paren)) {
|
|
Diag(Tok.getLocation(), diag::err_cxx0x_attribute_forbids_arguments)
|
|
<< AttrName->getName();
|
|
break;
|
|
}
|
|
|
|
attrs.addNew(AttrName, AttrLoc, 0, AttrLoc, 0,
|
|
SourceLocation(), 0, 0, false, true);
|
|
AttrParsed = true;
|
|
break;
|
|
}
|
|
|
|
// One argument; must be a type-id or assignment-expression
|
|
case AttributeList::AT_aligned: {
|
|
if (Tok.isNot(tok::l_paren)) {
|
|
Diag(Tok.getLocation(), diag::err_cxx0x_attribute_requires_arguments)
|
|
<< AttrName->getName();
|
|
break;
|
|
}
|
|
SourceLocation ParamLoc = ConsumeParen();
|
|
|
|
ExprResult ArgExpr = ParseCXX0XAlignArgument(ParamLoc);
|
|
|
|
MatchRHSPunctuation(tok::r_paren, ParamLoc);
|
|
|
|
ExprVector ArgExprs(Actions);
|
|
ArgExprs.push_back(ArgExpr.release());
|
|
attrs.addNew(AttrName, AttrLoc, 0, AttrLoc,
|
|
0, ParamLoc, ArgExprs.take(), 1,
|
|
false, true);
|
|
|
|
AttrParsed = true;
|
|
break;
|
|
}
|
|
|
|
// Silence warnings
|
|
default: break;
|
|
}
|
|
}
|
|
|
|
// Skip the entire parameter clause, if any
|
|
if (!AttrParsed && Tok.is(tok::l_paren)) {
|
|
ConsumeParen();
|
|
// SkipUntil maintains the balancedness of tokens.
|
|
SkipUntil(tok::r_paren, false);
|
|
}
|
|
}
|
|
|
|
if (ExpectAndConsume(tok::r_square, diag::err_expected_rsquare))
|
|
SkipUntil(tok::r_square, false);
|
|
Loc = Tok.getLocation();
|
|
if (ExpectAndConsume(tok::r_square, diag::err_expected_rsquare))
|
|
SkipUntil(tok::r_square, false);
|
|
|
|
attrs.Range = SourceRange(StartLoc, Loc);
|
|
}
|
|
|
|
/// ParseCXX0XAlignArgument - Parse the argument to C++0x's [[align]]
|
|
/// attribute.
|
|
///
|
|
/// FIXME: Simply returns an alignof() expression if the argument is a
|
|
/// type. Ideally, the type should be propagated directly into Sema.
|
|
///
|
|
/// [C++0x] 'align' '(' type-id ')'
|
|
/// [C++0x] 'align' '(' assignment-expression ')'
|
|
ExprResult Parser::ParseCXX0XAlignArgument(SourceLocation Start) {
|
|
if (isTypeIdInParens()) {
|
|
EnterExpressionEvaluationContext Unevaluated(Actions, Sema::Unevaluated);
|
|
SourceLocation TypeLoc = Tok.getLocation();
|
|
ParsedType Ty = ParseTypeName().get();
|
|
SourceRange TypeRange(Start, Tok.getLocation());
|
|
return Actions.ActOnUnaryExprOrTypeTraitExpr(TypeLoc, UETT_AlignOf, true,
|
|
Ty.getAsOpaquePtr(), TypeRange);
|
|
} else
|
|
return ParseConstantExpression();
|
|
}
|
|
|
|
/// ParseMicrosoftAttributes - Parse a Microsoft attribute [Attr]
|
|
///
|
|
/// [MS] ms-attribute:
|
|
/// '[' token-seq ']'
|
|
///
|
|
/// [MS] ms-attribute-seq:
|
|
/// ms-attribute[opt]
|
|
/// ms-attribute ms-attribute-seq
|
|
void Parser::ParseMicrosoftAttributes(ParsedAttributes &attrs,
|
|
SourceLocation *endLoc) {
|
|
assert(Tok.is(tok::l_square) && "Not a Microsoft attribute list");
|
|
|
|
while (Tok.is(tok::l_square)) {
|
|
ConsumeBracket();
|
|
SkipUntil(tok::r_square, true, true);
|
|
if (endLoc) *endLoc = Tok.getLocation();
|
|
ExpectAndConsume(tok::r_square, diag::err_expected_rsquare);
|
|
}
|
|
}
|