3455 lines
124 KiB
C++
3455 lines
124 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/Parse/Parser.h"
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#include "RAIIObjectsForParser.h"
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#include "clang/Basic/CharInfo.h"
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#include "clang/Basic/OperatorKinds.h"
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#include "clang/AST/DeclTemplate.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/ParsedTemplate.h"
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#include "clang/Sema/PrettyDeclStackTrace.h"
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#include "clang/Sema/Scope.h"
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#include "clang/Sema/SemaDiagnostic.h"
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#include "llvm/ADT/SmallString.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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ObjCDeclContextSwitch ObjCDC(*this);
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if (Tok.is(tok::code_completion)) {
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Actions.CodeCompleteNamespaceDecl(getCurScope());
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cutOffParsing();
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return 0;
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}
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SourceLocation IdentLoc;
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IdentifierInfo *Ident = 0;
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std::vector<SourceLocation> ExtraIdentLoc;
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std::vector<IdentifierInfo*> ExtraIdent;
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std::vector<SourceLocation> ExtraNamespaceLoc;
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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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while (Tok.is(tok::coloncolon) && NextToken().is(tok::identifier)) {
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ExtraNamespaceLoc.push_back(ConsumeToken());
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ExtraIdent.push_back(Tok.getIdentifierInfo());
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ExtraIdentLoc.push_back(ConsumeToken());
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}
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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 (Ident == 0) {
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Diag(Tok, diag::err_expected_ident);
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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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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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BalancedDelimiterTracker T(*this, tok::l_brace);
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if (T.consumeOpen()) {
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if (!ExtraIdent.empty()) {
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Diag(ExtraNamespaceLoc[0], diag::err_nested_namespaces_with_double_colon)
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<< SourceRange(ExtraNamespaceLoc.front(), ExtraIdentLoc.back());
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}
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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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if (getCurScope()->isClassScope() || getCurScope()->isTemplateParamScope() ||
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getCurScope()->isInObjcMethodScope() || getCurScope()->getBlockParent() ||
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getCurScope()->getFnParent()) {
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if (!ExtraIdent.empty()) {
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Diag(ExtraNamespaceLoc[0], diag::err_nested_namespaces_with_double_colon)
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<< SourceRange(ExtraNamespaceLoc.front(), ExtraIdentLoc.back());
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}
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Diag(T.getOpenLocation(), diag::err_namespace_nonnamespace_scope);
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SkipUntil(tok::r_brace);
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return 0;
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}
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if (!ExtraIdent.empty()) {
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TentativeParsingAction TPA(*this);
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SkipUntil(tok::r_brace, StopBeforeMatch);
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Token rBraceToken = Tok;
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TPA.Revert();
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if (!rBraceToken.is(tok::r_brace)) {
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Diag(ExtraNamespaceLoc[0], diag::err_nested_namespaces_with_double_colon)
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<< SourceRange(ExtraNamespaceLoc.front(), ExtraIdentLoc.back());
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} else {
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std::string NamespaceFix;
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for (std::vector<IdentifierInfo*>::iterator I = ExtraIdent.begin(),
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E = ExtraIdent.end(); I != E; ++I) {
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NamespaceFix += " { namespace ";
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NamespaceFix += (*I)->getName();
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}
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std::string RBraces;
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for (unsigned i = 0, e = ExtraIdent.size(); i != e; ++i)
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RBraces += "} ";
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Diag(ExtraNamespaceLoc[0], diag::err_nested_namespaces_with_double_colon)
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<< FixItHint::CreateReplacement(SourceRange(ExtraNamespaceLoc.front(),
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ExtraIdentLoc.back()),
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NamespaceFix)
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<< FixItHint::CreateInsertion(rBraceToken.getLocation(), RBraces);
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}
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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 (InlineLoc.isValid())
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Diag(InlineLoc, getLangOpts().CPlusPlus11 ?
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diag::warn_cxx98_compat_inline_namespace : 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, T.getOpenLocation(),
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attrs.getList());
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PrettyDeclStackTraceEntry CrashInfo(Actions, NamespcDecl, NamespaceLoc,
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"parsing namespace");
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// Parse the contents of the namespace. This includes parsing recovery on
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// any improperly nested namespaces.
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ParseInnerNamespace(ExtraIdentLoc, ExtraIdent, ExtraNamespaceLoc, 0,
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InlineLoc, attrs, T);
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// Leave the namespace scope.
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NamespaceScope.Exit();
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DeclEnd = T.getCloseLocation();
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Actions.ActOnFinishNamespaceDef(NamespcDecl, DeclEnd);
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return NamespcDecl;
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}
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/// ParseInnerNamespace - Parse the contents of a namespace.
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void Parser::ParseInnerNamespace(std::vector<SourceLocation>& IdentLoc,
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std::vector<IdentifierInfo*>& Ident,
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std::vector<SourceLocation>& NamespaceLoc,
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unsigned int index, SourceLocation& InlineLoc,
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ParsedAttributes& attrs,
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BalancedDelimiterTracker &Tracker) {
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if (index == Ident.size()) {
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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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MaybeParseCXX11Attributes(attrs);
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MaybeParseMicrosoftAttributes(attrs);
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ParseExternalDeclaration(attrs);
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}
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// The caller is what called check -- we are simply calling
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// the close for it.
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Tracker.consumeClose();
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return;
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}
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// Parse improperly nested namespaces.
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ParseScope NamespaceScope(this, Scope::DeclScope);
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Decl *NamespcDecl =
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Actions.ActOnStartNamespaceDef(getCurScope(), SourceLocation(),
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NamespaceLoc[index], IdentLoc[index],
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Ident[index], Tracker.getOpenLocation(),
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attrs.getList());
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ParseInnerNamespace(IdentLoc, Ident, NamespaceLoc, ++index, InlineLoc,
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attrs, Tracker);
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NamespaceScope.Exit();
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Actions.ActOnFinishNamespaceDef(NamespcDecl, Tracker.getCloseLocation());
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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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cutOffParsing();
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return 0;
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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(), /*EnteringContext=*/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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SmallString<8> LangBuffer;
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bool Invalid = false;
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StringRef Lang = PP.getSpelling(Tok, LangBuffer, &Invalid);
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if (Invalid)
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return 0;
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// FIXME: This is incorrect: linkage-specifiers are parsed in translation
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// phase 7, so string-literal concatenation is supposed to occur.
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// extern "" "C" "" "+" "+" { } is legal.
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if (Tok.hasUDSuffix())
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Diag(Tok, diag::err_invalid_string_udl);
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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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MaybeParseCXX11Attributes(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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BalancedDelimiterTracker T(*this, tok::l_brace);
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T.consumeOpen();
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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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MaybeParseCXX11Attributes(attrs);
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MaybeParseMicrosoftAttributes(attrs);
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ParseExternalDeclaration(attrs);
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}
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T.consumeClose();
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return Actions.ActOnFinishLinkageSpecification(getCurScope(), LinkageSpec,
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T.getCloseLocation());
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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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Decl **OwnedType) {
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assert(Tok.is(tok::kw_using) && "Not using token");
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ObjCDeclContextSwitch ObjCDC(*this);
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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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cutOffParsing();
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return 0;
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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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AS_none, OwnedType);
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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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cutOffParsing();
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return 0;
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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(), /*EnteringContext=*/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++11 [dcl.dcl]p1
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/// 'using' identifier attribute-specifier-seq[opt] = 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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Decl **OwnedType) {
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CXXScopeSpec SS;
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SourceLocation TypenameLoc;
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bool HasTypenameKeyword = false;
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// Check for misplaced attributes before the identifier in an
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// alias-declaration.
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ParsedAttributesWithRange MisplacedAttrs(AttrFactory);
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MaybeParseCXX11Attributes(MisplacedAttrs);
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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 = ConsumeToken();
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HasTypenameKeyword = true;
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}
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// Parse nested-name-specifier.
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IdentifierInfo *LastII = 0;
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ParseOptionalCXXScopeSpecifier(SS, ParsedType(), /*EnteringContext=*/false,
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/*MayBePseudoDtor=*/0, /*IsTypename=*/false,
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/*LastII=*/&LastII);
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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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SourceLocation TemplateKWLoc;
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UnqualifiedId Name;
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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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//
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// C++11 [class.qual]p2:
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// [...] in a using-declaration that is a member-declaration, if the name
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// specified after the nested-name-specifier is the same as the identifier
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// or the simple-template-id's template-name in the last component of the
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// nested-name-specifier, the name is [...] considered to name the
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// constructor.
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if (getLangOpts().CPlusPlus11 && Context == Declarator::MemberContext &&
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Tok.is(tok::identifier) && NextToken().is(tok::semi) &&
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SS.isNotEmpty() && LastII == Tok.getIdentifierInfo() &&
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!SS.getScopeRep()->getAsNamespace() &&
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!SS.getScopeRep()->getAsNamespaceAlias()) {
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SourceLocation IdLoc = ConsumeToken();
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ParsedType Type = Actions.getInheritingConstructorName(SS, IdLoc, *LastII);
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Name.setConstructorName(Type, IdLoc, IdLoc);
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|
} else if (ParseUnqualifiedId(SS, /*EnteringContext=*/ false,
|
|
/*AllowDestructorName=*/ true,
|
|
/*AllowConstructorName=*/ true, ParsedType(),
|
|
TemplateKWLoc, Name)) {
|
|
SkipUntil(tok::semi);
|
|
return 0;
|
|
}
|
|
|
|
ParsedAttributesWithRange Attrs(AttrFactory);
|
|
MaybeParseGNUAttributes(Attrs);
|
|
MaybeParseCXX11Attributes(Attrs);
|
|
|
|
// Maybe this is an alias-declaration.
|
|
TypeResult TypeAlias;
|
|
bool IsAliasDecl = Tok.is(tok::equal);
|
|
if (IsAliasDecl) {
|
|
// If we had any misplaced attributes from earlier, this is where they
|
|
// should have been written.
|
|
if (MisplacedAttrs.Range.isValid()) {
|
|
Diag(MisplacedAttrs.Range.getBegin(), diag::err_attributes_not_allowed)
|
|
<< FixItHint::CreateInsertionFromRange(
|
|
Tok.getLocation(),
|
|
CharSourceRange::getTokenRange(MisplacedAttrs.Range))
|
|
<< FixItHint::CreateRemoval(MisplacedAttrs.Range);
|
|
Attrs.takeAllFrom(MisplacedAttrs);
|
|
}
|
|
|
|
ConsumeToken();
|
|
|
|
Diag(Tok.getLocation(), getLangOpts().CPlusPlus11 ?
|
|
diag::warn_cxx98_compat_alias_declaration :
|
|
diag::ext_alias_declaration);
|
|
|
|
// Type alias templates cannot be specialized.
|
|
int SpecKind = -1;
|
|
if (TemplateInfo.Kind == ParsedTemplateInfo::Template &&
|
|
Name.getKind() == UnqualifiedId::IK_TemplateId)
|
|
SpecKind = 0;
|
|
if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization)
|
|
SpecKind = 1;
|
|
if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation)
|
|
SpecKind = 2;
|
|
if (SpecKind != -1) {
|
|
SourceRange Range;
|
|
if (SpecKind == 0)
|
|
Range = SourceRange(Name.TemplateId->LAngleLoc,
|
|
Name.TemplateId->RAngleLoc);
|
|
else
|
|
Range = TemplateInfo.getSourceRange();
|
|
Diag(Range.getBegin(), diag::err_alias_declaration_specialization)
|
|
<< SpecKind << Range;
|
|
SkipUntil(tok::semi);
|
|
return 0;
|
|
}
|
|
|
|
// Name must be an identifier.
|
|
if (Name.getKind() != UnqualifiedId::IK_Identifier) {
|
|
Diag(Name.StartLocation, diag::err_alias_declaration_not_identifier);
|
|
// No removal fixit: can't recover from this.
|
|
SkipUntil(tok::semi);
|
|
return 0;
|
|
} else if (HasTypenameKeyword)
|
|
Diag(TypenameLoc, diag::err_alias_declaration_not_identifier)
|
|
<< FixItHint::CreateRemoval(SourceRange(TypenameLoc,
|
|
SS.isNotEmpty() ? SS.getEndLoc() : TypenameLoc));
|
|
else if (SS.isNotEmpty())
|
|
Diag(SS.getBeginLoc(), diag::err_alias_declaration_not_identifier)
|
|
<< FixItHint::CreateRemoval(SS.getRange());
|
|
|
|
TypeAlias = ParseTypeName(0, TemplateInfo.Kind ?
|
|
Declarator::AliasTemplateContext :
|
|
Declarator::AliasDeclContext, AS, OwnedType,
|
|
&Attrs);
|
|
} else {
|
|
// C++11 attributes are not allowed on a using-declaration, but GNU ones
|
|
// are.
|
|
ProhibitAttributes(MisplacedAttrs);
|
|
ProhibitAttributes(Attrs);
|
|
|
|
// Parse (optional) attributes (most likely GNU strong-using extension).
|
|
MaybeParseGNUAttributes(Attrs);
|
|
}
|
|
|
|
// Eat ';'.
|
|
DeclEnd = Tok.getLocation();
|
|
ExpectAndConsume(tok::semi, diag::err_expected_semi_after,
|
|
!Attrs.empty() ? "attributes list" :
|
|
IsAliasDecl ? "alias declaration" : "using declaration",
|
|
tok::semi);
|
|
|
|
// Diagnose an attempt to declare a templated using-declaration.
|
|
// In C++11, alias-declarations can be templates:
|
|
// template <...> using id = type;
|
|
if (TemplateInfo.Kind && !IsAliasDecl) {
|
|
SourceRange R = TemplateInfo.getSourceRange();
|
|
Diag(UsingLoc, diag::err_templated_using_declaration)
|
|
<< R << FixItHint::CreateRemoval(R);
|
|
|
|
// Unfortunately, we have to bail out instead of recovering by
|
|
// ignoring the parameters, just in case the nested name specifier
|
|
// depends on the parameters.
|
|
return 0;
|
|
}
|
|
|
|
// "typename" keyword is allowed for identifiers only,
|
|
// because it may be a type definition.
|
|
if (HasTypenameKeyword && Name.getKind() != UnqualifiedId::IK_Identifier) {
|
|
Diag(Name.getSourceRange().getBegin(), diag::err_typename_identifiers_only)
|
|
<< FixItHint::CreateRemoval(SourceRange(TypenameLoc));
|
|
// Proceed parsing, but reset the HasTypenameKeyword flag.
|
|
HasTypenameKeyword = false;
|
|
}
|
|
|
|
if (IsAliasDecl) {
|
|
TemplateParameterLists *TemplateParams = TemplateInfo.TemplateParams;
|
|
MultiTemplateParamsArg TemplateParamsArg(
|
|
TemplateParams ? TemplateParams->data() : 0,
|
|
TemplateParams ? TemplateParams->size() : 0);
|
|
return Actions.ActOnAliasDeclaration(getCurScope(), AS, TemplateParamsArg,
|
|
UsingLoc, Name, Attrs.getList(),
|
|
TypeAlias);
|
|
}
|
|
|
|
return Actions.ActOnUsingDeclaration(getCurScope(), AS,
|
|
/* HasUsingKeyword */ true, UsingLoc,
|
|
SS, Name, Attrs.getList(),
|
|
HasTypenameKeyword, TypenameLoc);
|
|
}
|
|
|
|
/// ParseStaticAssertDeclaration - Parse C++0x or C11 static_assert-declaration.
|
|
///
|
|
/// [C++0x] static_assert-declaration:
|
|
/// static_assert ( constant-expression , string-literal ) ;
|
|
///
|
|
/// [C11] static_assert-declaration:
|
|
/// _Static_assert ( constant-expression , string-literal ) ;
|
|
///
|
|
Decl *Parser::ParseStaticAssertDeclaration(SourceLocation &DeclEnd){
|
|
assert((Tok.is(tok::kw_static_assert) || Tok.is(tok::kw__Static_assert)) &&
|
|
"Not a static_assert declaration");
|
|
|
|
if (Tok.is(tok::kw__Static_assert) && !getLangOpts().C11)
|
|
Diag(Tok, diag::ext_c11_static_assert);
|
|
if (Tok.is(tok::kw_static_assert))
|
|
Diag(Tok, diag::warn_cxx98_compat_static_assert);
|
|
|
|
SourceLocation StaticAssertLoc = ConsumeToken();
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.consumeOpen()) {
|
|
Diag(Tok, diag::err_expected_lparen);
|
|
SkipMalformedDecl();
|
|
return 0;
|
|
}
|
|
|
|
ExprResult AssertExpr(ParseConstantExpression());
|
|
if (AssertExpr.isInvalid()) {
|
|
SkipMalformedDecl();
|
|
return 0;
|
|
}
|
|
|
|
if (ExpectAndConsume(tok::comma, diag::err_expected_comma, "", tok::semi))
|
|
return 0;
|
|
|
|
if (!isTokenStringLiteral()) {
|
|
Diag(Tok, diag::err_expected_string_literal)
|
|
<< /*Source='static_assert'*/1;
|
|
SkipMalformedDecl();
|
|
return 0;
|
|
}
|
|
|
|
ExprResult AssertMessage(ParseStringLiteralExpression());
|
|
if (AssertMessage.isInvalid()) {
|
|
SkipMalformedDecl();
|
|
return 0;
|
|
}
|
|
|
|
T.consumeClose();
|
|
|
|
DeclEnd = Tok.getLocation();
|
|
ExpectAndConsumeSemi(diag::err_expected_semi_after_static_assert);
|
|
|
|
return Actions.ActOnStaticAssertDeclaration(StaticAssertLoc,
|
|
AssertExpr.take(),
|
|
AssertMessage.take(),
|
|
T.getCloseLocation());
|
|
}
|
|
|
|
/// ParseDecltypeSpecifier - Parse a C++11 decltype specifier.
|
|
///
|
|
/// 'decltype' ( expression )
|
|
/// 'decltype' ( 'auto' ) [C++1y]
|
|
///
|
|
SourceLocation Parser::ParseDecltypeSpecifier(DeclSpec &DS) {
|
|
assert((Tok.is(tok::kw_decltype) || Tok.is(tok::annot_decltype))
|
|
&& "Not a decltype specifier");
|
|
|
|
ExprResult Result;
|
|
SourceLocation StartLoc = Tok.getLocation();
|
|
SourceLocation EndLoc;
|
|
|
|
if (Tok.is(tok::annot_decltype)) {
|
|
Result = getExprAnnotation(Tok);
|
|
EndLoc = Tok.getAnnotationEndLoc();
|
|
ConsumeToken();
|
|
if (Result.isInvalid()) {
|
|
DS.SetTypeSpecError();
|
|
return EndLoc;
|
|
}
|
|
} else {
|
|
if (Tok.getIdentifierInfo()->isStr("decltype"))
|
|
Diag(Tok, diag::warn_cxx98_compat_decltype);
|
|
|
|
ConsumeToken();
|
|
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.expectAndConsume(diag::err_expected_lparen_after,
|
|
"decltype", tok::r_paren)) {
|
|
DS.SetTypeSpecError();
|
|
return T.getOpenLocation() == Tok.getLocation() ?
|
|
StartLoc : T.getOpenLocation();
|
|
}
|
|
|
|
// Check for C++1y 'decltype(auto)'.
|
|
if (Tok.is(tok::kw_auto)) {
|
|
// No need to disambiguate here: an expression can't start with 'auto',
|
|
// because the typename-specifier in a function-style cast operation can't
|
|
// be 'auto'.
|
|
Diag(Tok.getLocation(),
|
|
getLangOpts().CPlusPlus1y
|
|
? diag::warn_cxx11_compat_decltype_auto_type_specifier
|
|
: diag::ext_decltype_auto_type_specifier);
|
|
ConsumeToken();
|
|
} else {
|
|
// Parse the expression
|
|
|
|
// C++11 [dcl.type.simple]p4:
|
|
// The operand of the decltype specifier is an unevaluated operand.
|
|
EnterExpressionEvaluationContext Unevaluated(Actions, Sema::Unevaluated,
|
|
0, /*IsDecltype=*/true);
|
|
Result = ParseExpression();
|
|
if (Result.isInvalid()) {
|
|
DS.SetTypeSpecError();
|
|
if (SkipUntil(tok::r_paren, StopAtSemi | StopBeforeMatch)) {
|
|
EndLoc = ConsumeParen();
|
|
} else {
|
|
if (PP.isBacktrackEnabled() && Tok.is(tok::semi)) {
|
|
// Backtrack to get the location of the last token before the semi.
|
|
PP.RevertCachedTokens(2);
|
|
ConsumeToken(); // the semi.
|
|
EndLoc = ConsumeAnyToken();
|
|
assert(Tok.is(tok::semi));
|
|
} else {
|
|
EndLoc = Tok.getLocation();
|
|
}
|
|
}
|
|
return EndLoc;
|
|
}
|
|
|
|
Result = Actions.ActOnDecltypeExpression(Result.take());
|
|
}
|
|
|
|
// Match the ')'
|
|
T.consumeClose();
|
|
if (T.getCloseLocation().isInvalid()) {
|
|
DS.SetTypeSpecError();
|
|
// FIXME: this should return the location of the last token
|
|
// that was consumed (by "consumeClose()")
|
|
return T.getCloseLocation();
|
|
}
|
|
|
|
if (Result.isInvalid()) {
|
|
DS.SetTypeSpecError();
|
|
return T.getCloseLocation();
|
|
}
|
|
|
|
EndLoc = T.getCloseLocation();
|
|
}
|
|
assert(!Result.isInvalid());
|
|
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID;
|
|
// Check for duplicate type specifiers (e.g. "int decltype(a)").
|
|
if (Result.get()
|
|
? DS.SetTypeSpecType(DeclSpec::TST_decltype, StartLoc, PrevSpec,
|
|
DiagID, Result.release())
|
|
: DS.SetTypeSpecType(DeclSpec::TST_decltype_auto, StartLoc, PrevSpec,
|
|
DiagID)) {
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
DS.SetTypeSpecError();
|
|
}
|
|
return EndLoc;
|
|
}
|
|
|
|
void Parser::AnnotateExistingDecltypeSpecifier(const DeclSpec& DS,
|
|
SourceLocation StartLoc,
|
|
SourceLocation EndLoc) {
|
|
// make sure we have a token we can turn into an annotation token
|
|
if (PP.isBacktrackEnabled())
|
|
PP.RevertCachedTokens(1);
|
|
else
|
|
PP.EnterToken(Tok);
|
|
|
|
Tok.setKind(tok::annot_decltype);
|
|
setExprAnnotation(Tok,
|
|
DS.getTypeSpecType() == TST_decltype ? DS.getRepAsExpr() :
|
|
DS.getTypeSpecType() == TST_decltype_auto ? ExprResult() :
|
|
ExprError());
|
|
Tok.setAnnotationEndLoc(EndLoc);
|
|
Tok.setLocation(StartLoc);
|
|
PP.AnnotateCachedTokens(Tok);
|
|
}
|
|
|
|
void Parser::ParseUnderlyingTypeSpecifier(DeclSpec &DS) {
|
|
assert(Tok.is(tok::kw___underlying_type) &&
|
|
"Not an underlying type specifier");
|
|
|
|
SourceLocation StartLoc = ConsumeToken();
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.expectAndConsume(diag::err_expected_lparen_after,
|
|
"__underlying_type", tok::r_paren)) {
|
|
return;
|
|
}
|
|
|
|
TypeResult Result = ParseTypeName();
|
|
if (Result.isInvalid()) {
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
// Match the ')'
|
|
T.consumeClose();
|
|
if (T.getCloseLocation().isInvalid())
|
|
return;
|
|
|
|
const char *PrevSpec = 0;
|
|
unsigned DiagID;
|
|
if (DS.SetTypeSpecType(DeclSpec::TST_underlyingType, StartLoc, PrevSpec,
|
|
DiagID, Result.release()))
|
|
Diag(StartLoc, DiagID) << PrevSpec;
|
|
DS.setTypeofParensRange(T.getRange());
|
|
}
|
|
|
|
/// ParseBaseTypeSpecifier - Parse a C++ base-type-specifier which is either a
|
|
/// class name or decltype-specifier. 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.
|
|
///
|
|
/// base-type-specifier: [C++11 class.derived]
|
|
/// class-or-decltype
|
|
/// class-or-decltype: [C++11 class.derived]
|
|
/// nested-name-specifier[opt] class-name
|
|
/// decltype-specifier
|
|
/// class-name: [C++ class.name]
|
|
/// identifier
|
|
/// simple-template-id
|
|
///
|
|
/// In C++98, instead of base-type-specifier, we have:
|
|
///
|
|
/// ::[opt] nested-name-specifier[opt] class-name
|
|
Parser::TypeResult Parser::ParseBaseTypeSpecifier(SourceLocation &BaseLoc,
|
|
SourceLocation &EndLocation) {
|
|
// Ignore attempts to use typename
|
|
if (Tok.is(tok::kw_typename)) {
|
|
Diag(Tok, diag::err_expected_class_name_not_template)
|
|
<< FixItHint::CreateRemoval(Tok.getLocation());
|
|
ConsumeToken();
|
|
}
|
|
|
|
// Parse optional nested-name-specifier
|
|
CXXScopeSpec SS;
|
|
ParseOptionalCXXScopeSpecifier(SS, ParsedType(), /*EnteringContext=*/false);
|
|
|
|
BaseLoc = Tok.getLocation();
|
|
|
|
// Parse decltype-specifier
|
|
// tok == kw_decltype is just error recovery, it can only happen when SS
|
|
// isn't empty
|
|
if (Tok.is(tok::kw_decltype) || Tok.is(tok::annot_decltype)) {
|
|
if (SS.isNotEmpty())
|
|
Diag(SS.getBeginLoc(), diag::err_unexpected_scope_on_base_decltype)
|
|
<< FixItHint::CreateRemoval(SS.getRange());
|
|
// Fake up a Declarator to use with ActOnTypeName.
|
|
DeclSpec DS(AttrFactory);
|
|
|
|
EndLocation = ParseDecltypeSpecifier(DS);
|
|
|
|
Declarator DeclaratorInfo(DS, Declarator::TypeNameContext);
|
|
return Actions.ActOnTypeName(getCurScope(), DeclaratorInfo);
|
|
}
|
|
|
|
// Check whether we have a template-id that names a type.
|
|
if (Tok.is(tok::annot_template_id)) {
|
|
TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
|
|
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) {
|
|
TemplateArgList TemplateArgs;
|
|
SourceLocation LAngleLoc, RAngleLoc;
|
|
ParseTemplateIdAfterTemplateName(TemplateTy(), IdLoc, SS,
|
|
true, LAngleLoc, TemplateArgs, RAngleLoc);
|
|
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, SourceLocation(),
|
|
TemplateName, 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.
|
|
IdentifierInfo *CorrectedII = 0;
|
|
ParsedType Type = Actions.getTypeName(*Id, IdLoc, getCurScope(), &SS, true,
|
|
false, ParsedType(),
|
|
/*IsCtorOrDtorName=*/false,
|
|
/*NonTrivialTypeSourceInfo=*/true,
|
|
&CorrectedII);
|
|
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);
|
|
}
|
|
|
|
void Parser::ParseMicrosoftInheritanceClassAttributes(ParsedAttributes &attrs) {
|
|
while (Tok.is(tok::kw___single_inheritance) ||
|
|
Tok.is(tok::kw___multiple_inheritance) ||
|
|
Tok.is(tok::kw___virtual_inheritance)) {
|
|
IdentifierInfo *AttrName = Tok.getIdentifierInfo();
|
|
SourceLocation AttrNameLoc = ConsumeToken();
|
|
attrs.addNew(AttrName, AttrNameLoc, 0, AttrNameLoc, 0, 0,
|
|
AttributeList::AS_GNU);
|
|
}
|
|
}
|
|
|
|
/// Determine whether the following tokens are valid after a type-specifier
|
|
/// which could be a standalone declaration. This will conservatively return
|
|
/// true if there's any doubt, and is appropriate for insert-';' fixits.
|
|
bool Parser::isValidAfterTypeSpecifier(bool CouldBeBitfield) {
|
|
// This switch enumerates the valid "follow" set for type-specifiers.
|
|
switch (Tok.getKind()) {
|
|
default: break;
|
|
case tok::semi: // struct foo {...} ;
|
|
case tok::star: // struct foo {...} * P;
|
|
case tok::amp: // struct foo {...} & R = ...
|
|
case tok::ampamp: // 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{...} ,
|
|
case tok::kw_operator: // struct foo operator ++() {...}
|
|
return true;
|
|
case tok::colon:
|
|
return CouldBeBitfield; // enum E { ... } : 2;
|
|
// 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;
|
|
// Function specifiers
|
|
// Note, no 'explicit'. An explicit function must be either a conversion
|
|
// operator or a constructor. Either way, it can't have a return type.
|
|
case tok::kw_inline: // struct foo inline f();
|
|
case tok::kw_virtual: // struct foo virtual f();
|
|
case tok::kw_friend: // struct foo friend f();
|
|
// 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;
|
|
case tok::kw_thread_local: // struct foo {...} thread_local x;
|
|
case tok::kw_constexpr: // struct foo {...} constexpr 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()))
|
|
return true;
|
|
break;
|
|
case tok::r_brace: // struct bar { struct foo {...} }
|
|
// Missing ';' at end of struct is accepted as an extension in C mode.
|
|
if (!getLangOpts().CPlusPlus)
|
|
return true;
|
|
break;
|
|
// C++11 attributes
|
|
case tok::l_square: // enum E [[]] x
|
|
// Note, no tok::kw_alignas here; alignas cannot appertain to a type.
|
|
return getLangOpts().CPlusPlus11 && NextToken().is(tok::l_square);
|
|
case tok::greater:
|
|
// template<class T = class X>
|
|
return getLangOpts().CPlusPlus;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/// 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.
|
|
///
|
|
/// 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 EnteringContext, DeclSpecContext DSC,
|
|
ParsedAttributesWithRange &Attributes) {
|
|
DeclSpec::TST TagType;
|
|
if (TagTokKind == tok::kw_struct)
|
|
TagType = DeclSpec::TST_struct;
|
|
else if (TagTokKind == tok::kw___interface)
|
|
TagType = DeclSpec::TST_interface;
|
|
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);
|
|
return cutOffParsing();
|
|
}
|
|
|
|
// 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.
|
|
//
|
|
// Note that we don't suppress if this turns out to be an elaborated
|
|
// type specifier.
|
|
bool shouldDelayDiagsInTag =
|
|
(TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation ||
|
|
TemplateInfo.Kind == ParsedTemplateInfo::ExplicitSpecialization);
|
|
SuppressAccessChecks diagsFromTag(*this, shouldDelayDiagsInTag);
|
|
|
|
ParsedAttributesWithRange attrs(AttrFactory);
|
|
// If attributes exist after tag, parse them.
|
|
MaybeParseGNUAttributes(attrs);
|
|
|
|
// If declspecs exist after tag, parse them.
|
|
while (Tok.is(tok::kw___declspec))
|
|
ParseMicrosoftDeclSpec(attrs);
|
|
|
|
// Parse inheritance specifiers.
|
|
if (Tok.is(tok::kw___single_inheritance) ||
|
|
Tok.is(tok::kw___multiple_inheritance) ||
|
|
Tok.is(tok::kw___virtual_inheritance))
|
|
ParseMicrosoftInheritanceClassAttributes(attrs);
|
|
|
|
// If C++0x attributes exist here, parse them.
|
|
// FIXME: Are we consistent with the ordering of parsing of different
|
|
// styles of attributes?
|
|
MaybeParseCXX11Attributes(attrs);
|
|
|
|
// Source location used by FIXIT to insert misplaced
|
|
// C++11 attributes
|
|
SourceLocation AttrFixitLoc = Tok.getLocation();
|
|
|
|
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++ use 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 (getLangOpts().CPlusPlus) {
|
|
// "FOO : BAR" is not a potential typo for "FOO::BAR".
|
|
ColonProtectionRAIIObject X(*this);
|
|
|
|
if (ParseOptionalCXXScopeSpecifier(SS, ParsedType(), EnteringContext))
|
|
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) && getLangOpts().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
|
|
: TagType == DeclSpec::TST_union? 2
|
|
: 3)
|
|
<< 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 = takeTemplateIdAnnotation(Tok);
|
|
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)
|
|
<< TemplateId->Name << static_cast<int>(TemplateId->Kind) << Range;
|
|
|
|
DS.SetTypeSpecError();
|
|
SkipUntil(tok::semi, StopBeforeMatch);
|
|
return;
|
|
}
|
|
}
|
|
|
|
// There are four options here.
|
|
// - If we are in a trailing return type, this is always just a reference,
|
|
// and we must not try to parse a definition. For instance,
|
|
// [] () -> struct S { };
|
|
// does not define a type.
|
|
// - If we have 'struct foo {...', 'struct foo :...',
|
|
// 'struct foo final :' or 'struct foo final {', then this is a definition.
|
|
// - If we have 'struct foo;', then this is either a forward declaration
|
|
// or a friend declaration, which have to be treated differently.
|
|
// - Otherwise we have something like 'struct foo xyz', a reference.
|
|
//
|
|
// We also detect these erroneous cases to provide better diagnostic for
|
|
// C++11 attributes parsing.
|
|
// - attributes follow class name:
|
|
// struct foo [[]] {};
|
|
// - attributes appear before or after 'final':
|
|
// struct foo [[]] final [[]] {};
|
|
//
|
|
// However, in type-specifier-seq's, things look like declarations but are
|
|
// just references, e.g.
|
|
// new struct s;
|
|
// or
|
|
// &T::operator struct s;
|
|
// For these, DSC is DSC_type_specifier.
|
|
|
|
// If there are attributes after class name, parse them.
|
|
MaybeParseCXX11Attributes(Attributes);
|
|
|
|
Sema::TagUseKind TUK;
|
|
if (DSC == DSC_trailing)
|
|
TUK = Sema::TUK_Reference;
|
|
else if (Tok.is(tok::l_brace) ||
|
|
(getLangOpts().CPlusPlus && Tok.is(tok::colon)) ||
|
|
(isCXX11FinalKeyword() &&
|
|
(NextToken().is(tok::l_brace) || NextToken().is(tok::colon)))) {
|
|
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_type)
|
|
<< 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, StopBeforeMatch);
|
|
TUK = Sema::TUK_Friend;
|
|
} else {
|
|
// Okay, this is a class definition.
|
|
TUK = Sema::TUK_Definition;
|
|
}
|
|
} else if (isCXX11FinalKeyword() && (NextToken().is(tok::l_square) ||
|
|
NextToken().is(tok::kw_alignas))) {
|
|
// We can't tell if this is a definition or reference
|
|
// until we skipped the 'final' and C++11 attribute specifiers.
|
|
TentativeParsingAction PA(*this);
|
|
|
|
// Skip the 'final' keyword.
|
|
ConsumeToken();
|
|
|
|
// Skip C++11 attribute specifiers.
|
|
while (true) {
|
|
if (Tok.is(tok::l_square) && NextToken().is(tok::l_square)) {
|
|
ConsumeBracket();
|
|
if (!SkipUntil(tok::r_square, StopAtSemi))
|
|
break;
|
|
} else if (Tok.is(tok::kw_alignas) && NextToken().is(tok::l_paren)) {
|
|
ConsumeToken();
|
|
ConsumeParen();
|
|
if (!SkipUntil(tok::r_paren, StopAtSemi))
|
|
break;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (Tok.is(tok::l_brace) || Tok.is(tok::colon))
|
|
TUK = Sema::TUK_Definition;
|
|
else
|
|
TUK = Sema::TUK_Reference;
|
|
|
|
PA.Revert();
|
|
} else if (DSC != DSC_type_specifier &&
|
|
(Tok.is(tok::semi) ||
|
|
(Tok.isAtStartOfLine() && !isValidAfterTypeSpecifier(false)))) {
|
|
TUK = DS.isFriendSpecified() ? Sema::TUK_Friend : Sema::TUK_Declaration;
|
|
if (Tok.isNot(tok::semi)) {
|
|
// A semicolon was missing after this declaration. Diagnose and recover.
|
|
ExpectAndConsume(tok::semi, diag::err_expected_semi_after_tagdecl,
|
|
DeclSpec::getSpecifierName(TagType));
|
|
PP.EnterToken(Tok);
|
|
Tok.setKind(tok::semi);
|
|
}
|
|
} else
|
|
TUK = Sema::TUK_Reference;
|
|
|
|
// Forbid misplaced attributes. In cases of a reference, we pass attributes
|
|
// to caller to handle.
|
|
if (TUK != Sema::TUK_Reference) {
|
|
// If this is not a reference, then the only possible
|
|
// valid place for C++11 attributes to appear here
|
|
// is between class-key and class-name. If there are
|
|
// any attributes after class-name, we try a fixit to move
|
|
// them to the right place.
|
|
SourceRange AttrRange = Attributes.Range;
|
|
if (AttrRange.isValid()) {
|
|
Diag(AttrRange.getBegin(), diag::err_attributes_not_allowed)
|
|
<< AttrRange
|
|
<< FixItHint::CreateInsertionFromRange(AttrFixitLoc,
|
|
CharSourceRange(AttrRange, true))
|
|
<< FixItHint::CreateRemoval(AttrRange);
|
|
|
|
// Recover by adding misplaced attributes to the attribute list
|
|
// of the class so they can be applied on the class later.
|
|
attrs.takeAllFrom(Attributes);
|
|
}
|
|
}
|
|
|
|
// If this is an elaborated type specifier, and we delayed
|
|
// diagnostics before, just merge them into the current pool.
|
|
if (shouldDelayDiagsInTag) {
|
|
diagsFromTag.done();
|
|
if (TUK == Sema::TUK_Reference)
|
|
diagsFromTag.redelay();
|
|
}
|
|
|
|
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, StopAtSemi);
|
|
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(TemplateId->getTemplateArgs(),
|
|
TemplateId->NumArgs);
|
|
if (TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation &&
|
|
TUK == Sema::TUK_Declaration) {
|
|
// This is an explicit instantiation of a class template.
|
|
ProhibitAttributes(attrs);
|
|
|
|
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)) {
|
|
ProhibitAttributes(attrs);
|
|
TypeResult = Actions.ActOnTagTemplateIdType(TUK, TagType, StartLoc,
|
|
TemplateId->SS,
|
|
TemplateId->TemplateKWLoc,
|
|
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'.
|
|
// It this is friend declaration however, since it cannot have a
|
|
// template header, it is most likely that the user meant to
|
|
// remove the 'template' keyword.
|
|
assert((TUK == Sema::TUK_Definition || TUK == Sema::TUK_Friend) &&
|
|
"Expected a definition here");
|
|
|
|
if (TUK == Sema::TUK_Friend) {
|
|
Diag(DS.getFriendSpecLoc(), diag::err_friend_explicit_instantiation);
|
|
TemplateParams = 0;
|
|
} else {
|
|
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, DS.getModulePrivateSpecLoc(), SS,
|
|
TemplateId->Template,
|
|
TemplateId->TemplateNameLoc,
|
|
TemplateId->LAngleLoc,
|
|
TemplateArgsPtr,
|
|
TemplateId->RAngleLoc,
|
|
attrs.getList(),
|
|
MultiTemplateParamsArg(
|
|
TemplateParams? &(*TemplateParams)[0] : 0,
|
|
TemplateParams? TemplateParams->size() : 0));
|
|
}
|
|
} 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;
|
|
//
|
|
ProhibitAttributes(attrs);
|
|
|
|
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) {
|
|
ProhibitAttributes(attrs);
|
|
|
|
TagOrTempResult =
|
|
Actions.ActOnTemplatedFriendTag(getCurScope(), DS.getFriendSpecLoc(),
|
|
TagType, StartLoc, SS,
|
|
Name, NameLoc, attrs.getList(),
|
|
MultiTemplateParamsArg(
|
|
TemplateParams? &(*TemplateParams)[0] : 0,
|
|
TemplateParams? TemplateParams->size() : 0));
|
|
} else {
|
|
if (TUK != Sema::TUK_Declaration && TUK != Sema::TUK_Definition)
|
|
ProhibitAttributes(attrs);
|
|
|
|
if (TUK == Sema::TUK_Definition &&
|
|
TemplateInfo.Kind == ParsedTemplateInfo::ExplicitInstantiation) {
|
|
// If the declarator-id is not a template-id, issue a diagnostic and
|
|
// recover by ignoring the 'template' keyword.
|
|
Diag(Tok, diag::err_template_defn_explicit_instantiation)
|
|
<< 1 << FixItHint::CreateRemoval(TemplateInfo.TemplateLoc);
|
|
TemplateParams = 0;
|
|
}
|
|
|
|
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,
|
|
DS.getModulePrivateSpecLoc(),
|
|
TParams, Owned, IsDependent,
|
|
SourceLocation(), 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) ||
|
|
(getLangOpts().CPlusPlus && Tok.is(tok::colon)) ||
|
|
isCXX11FinalKeyword());
|
|
if (getLangOpts().CPlusPlus)
|
|
ParseCXXMemberSpecification(StartLoc, AttrFixitLoc, attrs, 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.
|
|
//
|
|
// Also enforce C++ [temp]p3:
|
|
// In a template-declaration which defines a class, no declarator
|
|
// is permitted.
|
|
if (TUK == Sema::TUK_Definition &&
|
|
(TemplateInfo.Kind || !isValidAfterTypeSpecifier(false))) {
|
|
if (Tok.isNot(tok::semi)) {
|
|
ExpectAndConsume(tok::semi, diag::err_expected_semi_after_tagdecl,
|
|
DeclSpec::getSpecifierName(TagType));
|
|
// 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.
|
|
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, StopAtSemi | StopBeforeMatch);
|
|
} 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]
|
|
/// attribute-specifier-seq[opt] base-type-specifier
|
|
/// attribute-specifier-seq[opt] 'virtual' access-specifier[opt]
|
|
/// base-type-specifier
|
|
/// attribute-specifier-seq[opt] access-specifier 'virtual'[opt]
|
|
/// base-type-specifier
|
|
Parser::BaseResult Parser::ParseBaseSpecifier(Decl *ClassDecl) {
|
|
bool IsVirtual = false;
|
|
SourceLocation StartLoc = Tok.getLocation();
|
|
|
|
ParsedAttributesWithRange Attributes(AttrFactory);
|
|
MaybeParseCXX11Attributes(Attributes);
|
|
|
|
// Parse the 'virtual' keyword.
|
|
if (Tok.is(tok::kw_virtual)) {
|
|
ConsumeToken();
|
|
IsVirtual = true;
|
|
}
|
|
|
|
CheckMisplacedCXX11Attribute(Attributes, StartLoc);
|
|
|
|
// Parse an (optional) access specifier.
|
|
AccessSpecifier Access = getAccessSpecifierIfPresent();
|
|
if (Access != AS_none)
|
|
ConsumeToken();
|
|
|
|
CheckMisplacedCXX11Attribute(Attributes, StartLoc);
|
|
|
|
// 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;
|
|
}
|
|
|
|
CheckMisplacedCXX11Attribute(Attributes, StartLoc);
|
|
|
|
// Parse the class-name.
|
|
SourceLocation EndLocation;
|
|
SourceLocation BaseLoc;
|
|
TypeResult BaseType = ParseBaseTypeSpecifier(BaseLoc, EndLocation);
|
|
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, Attributes, 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;
|
|
}
|
|
}
|
|
|
|
/// \brief If the given declarator has any parts for which parsing has to be
|
|
/// delayed, e.g., default arguments, create a late-parsed method declaration
|
|
/// record to handle the parsing at the end of the class definition.
|
|
void Parser::HandleMemberFunctionDeclDelays(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 may or may
|
|
// not have a default argument).
|
|
LateMethod->DefaultArgs.push_back(
|
|
LateParsedDefaultArgument(FTI.ArgInfo[ParamIdx].Param,
|
|
FTI.ArgInfo[ParamIdx].DefaultArgTokens));
|
|
}
|
|
}
|
|
}
|
|
|
|
/// isCXX11VirtSpecifier - Determine whether the given token is a C++11
|
|
/// virt-specifier.
|
|
///
|
|
/// virt-specifier:
|
|
/// override
|
|
/// final
|
|
VirtSpecifiers::Specifier Parser::isCXX11VirtSpecifier(const Token &Tok) const {
|
|
if (!getLangOpts().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");
|
|
if (getLangOpts().MicrosoftExt)
|
|
Ident_sealed = &PP.getIdentifierTable().get("sealed");
|
|
Ident_override = &PP.getIdentifierTable().get("override");
|
|
}
|
|
|
|
if (II == Ident_override)
|
|
return VirtSpecifiers::VS_Override;
|
|
|
|
if (II == Ident_sealed)
|
|
return VirtSpecifiers::VS_Sealed;
|
|
|
|
if (II == Ident_final)
|
|
return VirtSpecifiers::VS_Final;
|
|
}
|
|
|
|
return VirtSpecifiers::VS_None;
|
|
}
|
|
|
|
/// ParseOptionalCXX11VirtSpecifierSeq - Parse a virt-specifier-seq.
|
|
///
|
|
/// virt-specifier-seq:
|
|
/// virt-specifier
|
|
/// virt-specifier-seq virt-specifier
|
|
void Parser::ParseOptionalCXX11VirtSpecifierSeq(VirtSpecifiers &VS,
|
|
bool IsInterface) {
|
|
while (true) {
|
|
VirtSpecifiers::Specifier Specifier = isCXX11VirtSpecifier();
|
|
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 (IsInterface && (Specifier == VirtSpecifiers::VS_Final ||
|
|
Specifier == VirtSpecifiers::VS_Sealed)) {
|
|
Diag(Tok.getLocation(), diag::err_override_control_interface)
|
|
<< VirtSpecifiers::getSpecifierName(Specifier);
|
|
} else if (Specifier == VirtSpecifiers::VS_Sealed) {
|
|
Diag(Tok.getLocation(), diag::ext_ms_sealed_keyword);
|
|
} else {
|
|
Diag(Tok.getLocation(),
|
|
getLangOpts().CPlusPlus11
|
|
? diag::warn_cxx98_compat_override_control_keyword
|
|
: diag::ext_override_control_keyword)
|
|
<< VirtSpecifiers::getSpecifierName(Specifier);
|
|
}
|
|
ConsumeToken();
|
|
}
|
|
}
|
|
|
|
/// isCXX11FinalKeyword - Determine whether the next token is a C++11
|
|
/// contextual 'final' keyword.
|
|
bool Parser::isCXX11FinalKeyword() const {
|
|
if (!getLangOpts().CPlusPlus)
|
|
return false;
|
|
|
|
if (!Tok.is(tok::identifier))
|
|
return false;
|
|
|
|
// Initialize the contextual keywords.
|
|
if (!Ident_final) {
|
|
Ident_final = &PP.getIdentifierTable().get("final");
|
|
if (getLangOpts().MicrosoftExt)
|
|
Ident_sealed = &PP.getIdentifierTable().get("sealed");
|
|
Ident_override = &PP.getIdentifierTable().get("override");
|
|
}
|
|
|
|
return Tok.getIdentifierInfo() == Ident_final ||
|
|
Tok.getIdentifierInfo() == Ident_sealed;
|
|
}
|
|
|
|
/// 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]
|
|
/// [C++11] declarator brace-or-equal-initializer[opt]
|
|
/// identifier[opt] ':' constant-expression
|
|
///
|
|
/// virt-specifier-seq:
|
|
/// virt-specifier
|
|
/// virt-specifier-seq virt-specifier
|
|
///
|
|
/// virt-specifier:
|
|
/// override
|
|
/// final
|
|
/// [MS] sealed
|
|
///
|
|
/// pure-specifier:
|
|
/// '= 0'
|
|
///
|
|
/// constant-initializer:
|
|
/// '=' constant-expression
|
|
///
|
|
void Parser::ParseCXXClassMemberDeclaration(AccessSpecifier AS,
|
|
AttributeList *AccessAttrs,
|
|
const ParsedTemplateInfo &TemplateInfo,
|
|
ParsingDeclRAIIObject *TemplateDiags) {
|
|
if (Tok.is(tok::at)) {
|
|
if (getLangOpts().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, StopAtSemi);
|
|
return;
|
|
}
|
|
|
|
// Access declarations.
|
|
bool MalformedTypeSpec = false;
|
|
if (!TemplateInfo.Kind &&
|
|
(Tok.is(tok::identifier) || Tok.is(tok::coloncolon))) {
|
|
if (TryAnnotateCXXScopeToken())
|
|
MalformedTypeSpec = true;
|
|
|
|
bool isAccessDecl;
|
|
if (Tok.isNot(tok::annot_cxxscope))
|
|
isAccessDecl = false;
|
|
else 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(),
|
|
/*EnteringContext=*/false);
|
|
|
|
// Try to parse an unqualified-id.
|
|
SourceLocation TemplateKWLoc;
|
|
UnqualifiedId Name;
|
|
if (ParseUnqualifiedId(SS, false, true, true, ParsedType(),
|
|
TemplateKWLoc, 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,
|
|
/* HasUsingKeyword */ false,
|
|
SourceLocation(),
|
|
SS, Name,
|
|
/* AttrList */ 0,
|
|
/* HasTypenameKeyword */ 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, AccessAttrs);
|
|
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, AccessAttrs,
|
|
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);
|
|
ParsedAttributesWithRange FnAttrs(AttrFactory);
|
|
// Optional C++11 attribute-specifier
|
|
MaybeParseCXX11Attributes(attrs);
|
|
// We need to keep these attributes for future diagnostic
|
|
// before they are taken over by declaration specifier.
|
|
FnAttrs.addAll(attrs.getList());
|
|
FnAttrs.Range = attrs.Range;
|
|
|
|
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, StopBeforeMatch);
|
|
} else {
|
|
SourceLocation DeclEnd;
|
|
// Otherwise, it must be a using-declaration or an alias-declaration.
|
|
ParseUsingDeclaration(Declarator::MemberContext, TemplateInfo,
|
|
UsingLoc, DeclEnd, AS);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Hold late-parsed attributes so we can attach a Decl to them later.
|
|
LateParsedAttrList CommonLateParsedAttrs;
|
|
|
|
// decl-specifier-seq:
|
|
// Parse the common declaration-specifiers piece.
|
|
ParsingDeclSpec DS(*this, TemplateDiags);
|
|
DS.takeAttributesFrom(attrs);
|
|
if (MalformedTypeSpec)
|
|
DS.SetTypeSpecError();
|
|
ParseDeclarationSpecifiers(DS, TemplateInfo, AS, DSC_class,
|
|
&CommonLateParsedAttrs);
|
|
|
|
// If we had a free-standing type definition with a missing semicolon, we
|
|
// may get this far before the problem becomes obvious.
|
|
if (DS.hasTagDefinition() &&
|
|
TemplateInfo.Kind == ParsedTemplateInfo::NonTemplate &&
|
|
DiagnoseMissingSemiAfterTagDefinition(DS, AS, DSC_class,
|
|
&CommonLateParsedAttrs))
|
|
return;
|
|
|
|
MultiTemplateParamsArg TemplateParams(
|
|
TemplateInfo.TemplateParams? TemplateInfo.TemplateParams->data() : 0,
|
|
TemplateInfo.TemplateParams? TemplateInfo.TemplateParams->size() : 0);
|
|
|
|
if (Tok.is(tok::semi)) {
|
|
ConsumeToken();
|
|
|
|
if (DS.isFriendSpecified())
|
|
ProhibitAttributes(FnAttrs);
|
|
|
|
Decl *TheDecl =
|
|
Actions.ParsedFreeStandingDeclSpec(getCurScope(), AS, DS, TemplateParams);
|
|
DS.complete(TheDecl);
|
|
return;
|
|
}
|
|
|
|
ParsingDeclarator DeclaratorInfo(*this, DS, Declarator::MemberContext);
|
|
VirtSpecifiers VS;
|
|
|
|
// Hold late-parsed attributes so we can attach a Decl to them later.
|
|
LateParsedAttrList LateParsedAttrs;
|
|
|
|
SourceLocation EqualLoc;
|
|
bool HasInitializer = false;
|
|
ExprResult Init;
|
|
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, StopAtSemi | StopBeforeMatch);
|
|
if (Tok.is(tok::semi))
|
|
ConsumeToken();
|
|
return;
|
|
}
|
|
|
|
ParseOptionalCXX11VirtSpecifierSeq(VS, getCurrentClass().IsInterface);
|
|
|
|
// If attributes exist after the declarator, but before an '{', parse them.
|
|
MaybeParseGNUAttributes(DeclaratorInfo, &LateParsedAttrs);
|
|
|
|
// MSVC permits pure specifier on inline functions declared at class scope.
|
|
// Hence check for =0 before checking for function definition.
|
|
if (getLangOpts().MicrosoftExt && Tok.is(tok::equal) &&
|
|
DeclaratorInfo.isFunctionDeclarator() &&
|
|
NextToken().is(tok::numeric_constant)) {
|
|
EqualLoc = ConsumeToken();
|
|
Init = ParseInitializer();
|
|
if (Init.isInvalid())
|
|
SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
|
|
else
|
|
HasInitializer = true;
|
|
}
|
|
|
|
FunctionDefinitionKind DefinitionKind = FDK_Declaration;
|
|
// function-definition:
|
|
//
|
|
// In C++11, a non-function declarator followed by an open brace is a
|
|
// braced-init-list for an in-class member initialization, not an
|
|
// erroneous function definition.
|
|
if (Tok.is(tok::l_brace) && !getLangOpts().CPlusPlus11) {
|
|
DefinitionKind = FDK_Definition;
|
|
} else if (DeclaratorInfo.isFunctionDeclarator()) {
|
|
if (Tok.is(tok::l_brace) || Tok.is(tok::colon) || Tok.is(tok::kw_try)) {
|
|
DefinitionKind = FDK_Definition;
|
|
} else if (Tok.is(tok::equal)) {
|
|
const Token &KW = NextToken();
|
|
if (KW.is(tok::kw_default))
|
|
DefinitionKind = FDK_Defaulted;
|
|
else if (KW.is(tok::kw_delete))
|
|
DefinitionKind = FDK_Deleted;
|
|
}
|
|
}
|
|
|
|
// C++11 [dcl.attr.grammar] p4: If an attribute-specifier-seq appertains
|
|
// to a friend declaration, that declaration shall be a definition.
|
|
if (DeclaratorInfo.isFunctionDeclarator() &&
|
|
DefinitionKind != FDK_Definition && DS.isFriendSpecified()) {
|
|
// Diagnose attributes that appear before decl specifier:
|
|
// [[]] friend int foo();
|
|
ProhibitAttributes(FnAttrs);
|
|
}
|
|
|
|
if (DefinitionKind) {
|
|
if (!DeclaratorInfo.isFunctionDeclarator()) {
|
|
Diag(DeclaratorInfo.getIdentifierLoc(), diag::err_func_def_no_params);
|
|
ConsumeBrace();
|
|
SkipUntil(tok::r_brace);
|
|
|
|
// Consume the optional ';'
|
|
if (Tok.is(tok::semi))
|
|
ConsumeToken();
|
|
return;
|
|
}
|
|
|
|
if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef) {
|
|
Diag(DeclaratorInfo.getIdentifierLoc(),
|
|
diag::err_function_declared_typedef);
|
|
|
|
// Recover by treating the 'typedef' as spurious.
|
|
DS.ClearStorageClassSpecs();
|
|
}
|
|
|
|
Decl *FunDecl =
|
|
ParseCXXInlineMethodDef(AS, AccessAttrs, DeclaratorInfo, TemplateInfo,
|
|
VS, DefinitionKind, Init);
|
|
|
|
if (FunDecl) {
|
|
for (unsigned i = 0, ni = CommonLateParsedAttrs.size(); i < ni; ++i) {
|
|
CommonLateParsedAttrs[i]->addDecl(FunDecl);
|
|
}
|
|
for (unsigned i = 0, ni = LateParsedAttrs.size(); i < ni; ++i) {
|
|
LateParsedAttrs[i]->addDecl(FunDecl);
|
|
}
|
|
}
|
|
LateParsedAttrs.clear();
|
|
|
|
// Consume the ';' - it's optional unless we have a delete or default
|
|
if (Tok.is(tok::semi))
|
|
ConsumeExtraSemi(AfterMemberFunctionDefinition);
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
// member-declarator-list:
|
|
// member-declarator
|
|
// member-declarator-list ',' member-declarator
|
|
|
|
SmallVector<Decl *, 8> DeclsInGroup;
|
|
ExprResult BitfieldSize;
|
|
bool ExpectSemi = true;
|
|
|
|
while (1) {
|
|
// member-declarator:
|
|
// declarator pure-specifier[opt]
|
|
// declarator brace-or-equal-initializer[opt]
|
|
// identifier[opt] ':' constant-expression
|
|
if (Tok.is(tok::colon)) {
|
|
ConsumeToken();
|
|
BitfieldSize = ParseConstantExpression();
|
|
if (BitfieldSize.isInvalid())
|
|
SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
|
|
}
|
|
|
|
// 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, StopAtSemi | StopBeforeMatch);
|
|
|
|
DeclaratorInfo.setAsmLabel(AsmLabel.release());
|
|
DeclaratorInfo.SetRangeEnd(Loc);
|
|
}
|
|
|
|
// If attributes exist after the declarator, parse them.
|
|
MaybeParseGNUAttributes(DeclaratorInfo, &LateParsedAttrs);
|
|
|
|
// FIXME: When g++ adds support for this, we'll need to check whether it
|
|
// goes before or after the GNU attributes and __asm__.
|
|
ParseOptionalCXX11VirtSpecifierSeq(VS, getCurrentClass().IsInterface);
|
|
|
|
InClassInitStyle HasInClassInit = ICIS_NoInit;
|
|
if ((Tok.is(tok::equal) || Tok.is(tok::l_brace)) && !HasInitializer) {
|
|
if (BitfieldSize.get()) {
|
|
Diag(Tok, diag::err_bitfield_member_init);
|
|
SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
|
|
} else {
|
|
HasInitializer = true;
|
|
if (!DeclaratorInfo.isDeclarationOfFunction() &&
|
|
DeclaratorInfo.getDeclSpec().getStorageClassSpec()
|
|
!= DeclSpec::SCS_typedef)
|
|
HasInClassInit = Tok.is(tok::equal) ? ICIS_CopyInit : ICIS_ListInit;
|
|
}
|
|
}
|
|
|
|
// 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.
|
|
|
|
NamedDecl *ThisDecl = 0;
|
|
if (DS.isFriendSpecified()) {
|
|
// C++11 [dcl.attr.grammar] p4: If an attribute-specifier-seq appertains
|
|
// to a friend declaration, that declaration shall be a definition.
|
|
//
|
|
// Diagnose attributes appear after friend member function declarator:
|
|
// foo [[]] ();
|
|
SmallVector<SourceRange, 4> Ranges;
|
|
DeclaratorInfo.getCXX11AttributeRanges(Ranges);
|
|
if (!Ranges.empty()) {
|
|
for (SmallVectorImpl<SourceRange>::iterator I = Ranges.begin(),
|
|
E = Ranges.end(); I != E; ++I) {
|
|
Diag((*I).getBegin(), diag::err_attributes_not_allowed)
|
|
<< *I;
|
|
}
|
|
}
|
|
|
|
// TODO: handle initializers, bitfields, 'delete'
|
|
ThisDecl = Actions.ActOnFriendFunctionDecl(getCurScope(), DeclaratorInfo,
|
|
TemplateParams);
|
|
} else {
|
|
ThisDecl = Actions.ActOnCXXMemberDeclarator(getCurScope(), AS,
|
|
DeclaratorInfo,
|
|
TemplateParams,
|
|
BitfieldSize.release(),
|
|
VS, HasInClassInit);
|
|
|
|
if (VarTemplateDecl *VT =
|
|
ThisDecl ? dyn_cast<VarTemplateDecl>(ThisDecl) : 0)
|
|
// Re-direct this decl to refer to the templated decl so that we can
|
|
// initialize it.
|
|
ThisDecl = VT->getTemplatedDecl();
|
|
|
|
if (ThisDecl && AccessAttrs)
|
|
Actions.ProcessDeclAttributeList(getCurScope(), ThisDecl, AccessAttrs);
|
|
}
|
|
|
|
// Handle the initializer.
|
|
if (HasInClassInit != ICIS_NoInit &&
|
|
DeclaratorInfo.getDeclSpec().getStorageClassSpec() !=
|
|
DeclSpec::SCS_static) {
|
|
// The initializer was deferred; parse it and cache the tokens.
|
|
Diag(Tok, getLangOpts().CPlusPlus11
|
|
? diag::warn_cxx98_compat_nonstatic_member_init
|
|
: diag::ext_nonstatic_member_init);
|
|
|
|
if (DeclaratorInfo.isArrayOfUnknownBound()) {
|
|
// C++11 [dcl.array]p3: An array bound may also be omitted when the
|
|
// declarator is followed by an initializer.
|
|
//
|
|
// A brace-or-equal-initializer for a member-declarator is not an
|
|
// initializer in the grammar, so this is ill-formed.
|
|
Diag(Tok, diag::err_incomplete_array_member_init);
|
|
SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
|
|
|
|
// Avoid later warnings about a class member of incomplete type.
|
|
if (ThisDecl)
|
|
ThisDecl->setInvalidDecl();
|
|
} else
|
|
ParseCXXNonStaticMemberInitializer(ThisDecl);
|
|
} else if (HasInitializer) {
|
|
// Normal initializer.
|
|
if (!Init.isUsable())
|
|
Init = ParseCXXMemberInitializer(
|
|
ThisDecl, DeclaratorInfo.isDeclarationOfFunction(), EqualLoc);
|
|
|
|
if (Init.isInvalid())
|
|
SkipUntil(tok::comma, StopAtSemi | StopBeforeMatch);
|
|
else if (ThisDecl)
|
|
Actions.AddInitializerToDecl(ThisDecl, Init.get(), EqualLoc.isInvalid(),
|
|
DS.containsPlaceholderType());
|
|
} else if (ThisDecl && DS.getStorageClassSpec() == DeclSpec::SCS_static)
|
|
// No initializer.
|
|
Actions.ActOnUninitializedDecl(ThisDecl, DS.containsPlaceholderType());
|
|
|
|
if (ThisDecl) {
|
|
if (!ThisDecl->isInvalidDecl()) {
|
|
// Set the Decl for any late parsed attributes
|
|
for (unsigned i = 0, ni = CommonLateParsedAttrs.size(); i < ni; ++i)
|
|
CommonLateParsedAttrs[i]->addDecl(ThisDecl);
|
|
|
|
for (unsigned i = 0, ni = LateParsedAttrs.size(); i < ni; ++i)
|
|
LateParsedAttrs[i]->addDecl(ThisDecl);
|
|
}
|
|
Actions.FinalizeDeclaration(ThisDecl);
|
|
DeclsInGroup.push_back(ThisDecl);
|
|
|
|
if (DeclaratorInfo.isFunctionDeclarator() &&
|
|
DeclaratorInfo.getDeclSpec().getStorageClassSpec() !=
|
|
DeclSpec::SCS_typedef)
|
|
HandleMemberFunctionDeclDelays(DeclaratorInfo, ThisDecl);
|
|
}
|
|
LateParsedAttrs.clear();
|
|
|
|
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.
|
|
SourceLocation CommaLoc = ConsumeToken();
|
|
|
|
if (Tok.isAtStartOfLine() &&
|
|
!MightBeDeclarator(Declarator::MemberContext)) {
|
|
// This comma was followed by a line-break and something which can't be
|
|
// the start of a declarator. The comma was probably a typo for a
|
|
// semicolon.
|
|
Diag(CommaLoc, diag::err_expected_semi_declaration)
|
|
<< FixItHint::CreateReplacement(CommaLoc, ";");
|
|
ExpectSemi = false;
|
|
break;
|
|
}
|
|
|
|
// Parse the next declarator.
|
|
DeclaratorInfo.clear();
|
|
VS.clear();
|
|
BitfieldSize = true;
|
|
Init = true;
|
|
HasInitializer = false;
|
|
DeclaratorInfo.setCommaLoc(CommaLoc);
|
|
|
|
// Attributes are only allowed on the second declarator.
|
|
MaybeParseGNUAttributes(DeclaratorInfo);
|
|
|
|
if (Tok.isNot(tok::colon))
|
|
ParseDeclarator(DeclaratorInfo);
|
|
}
|
|
|
|
if (ExpectSemi &&
|
|
ExpectAndConsume(tok::semi, diag::err_expected_semi_decl_list)) {
|
|
// Skip to end of block or statement.
|
|
SkipUntil(tok::r_brace, StopAtSemi | StopBeforeMatch);
|
|
// If we stopped at a ';', eat it.
|
|
if (Tok.is(tok::semi)) ConsumeToken();
|
|
return;
|
|
}
|
|
|
|
Actions.FinalizeDeclaratorGroup(getCurScope(), DS, DeclsInGroup);
|
|
}
|
|
|
|
/// ParseCXXMemberInitializer - Parse the brace-or-equal-initializer or
|
|
/// pure-specifier. Also detect and reject any attempted defaulted/deleted
|
|
/// function definition. The location of the '=', if any, will be placed in
|
|
/// EqualLoc.
|
|
///
|
|
/// pure-specifier:
|
|
/// '= 0'
|
|
///
|
|
/// brace-or-equal-initializer:
|
|
/// '=' initializer-expression
|
|
/// braced-init-list
|
|
///
|
|
/// initializer-clause:
|
|
/// assignment-expression
|
|
/// braced-init-list
|
|
///
|
|
/// defaulted/deleted function-definition:
|
|
/// '=' 'default'
|
|
/// '=' 'delete'
|
|
///
|
|
/// Prior to C++0x, the assignment-expression in an initializer-clause must
|
|
/// be a constant-expression.
|
|
ExprResult Parser::ParseCXXMemberInitializer(Decl *D, bool IsFunction,
|
|
SourceLocation &EqualLoc) {
|
|
assert((Tok.is(tok::equal) || Tok.is(tok::l_brace))
|
|
&& "Data member initializer not starting with '=' or '{'");
|
|
|
|
EnterExpressionEvaluationContext Context(Actions,
|
|
Sema::PotentiallyEvaluated,
|
|
D);
|
|
if (Tok.is(tok::equal)) {
|
|
EqualLoc = ConsumeToken();
|
|
if (Tok.is(tok::kw_delete)) {
|
|
// In principle, an initializer of '= delete p;' is legal, but it will
|
|
// never type-check. It's better to diagnose it as an ill-formed expression
|
|
// than as an ill-formed deleted non-function member.
|
|
// An initializer of '= delete p, foo' will never be parsed, because
|
|
// a top-level comma always ends the initializer expression.
|
|
const Token &Next = NextToken();
|
|
if (IsFunction || Next.is(tok::semi) || Next.is(tok::comma) ||
|
|
Next.is(tok::eof)) {
|
|
if (IsFunction)
|
|
Diag(ConsumeToken(), diag::err_default_delete_in_multiple_declaration)
|
|
<< 1 /* delete */;
|
|
else
|
|
Diag(ConsumeToken(), diag::err_deleted_non_function);
|
|
return ExprResult();
|
|
}
|
|
} else if (Tok.is(tok::kw_default)) {
|
|
if (IsFunction)
|
|
Diag(Tok, diag::err_default_delete_in_multiple_declaration)
|
|
<< 0 /* default */;
|
|
else
|
|
Diag(ConsumeToken(), diag::err_default_special_members);
|
|
return ExprResult();
|
|
}
|
|
|
|
}
|
|
return ParseInitializer();
|
|
}
|
|
|
|
/// ParseCXXMemberSpecification - Parse the class definition.
|
|
///
|
|
/// member-specification:
|
|
/// member-declaration member-specification[opt]
|
|
/// access-specifier ':' member-specification[opt]
|
|
///
|
|
void Parser::ParseCXXMemberSpecification(SourceLocation RecordLoc,
|
|
SourceLocation AttrFixitLoc,
|
|
ParsedAttributesWithRange &Attrs,
|
|
unsigned TagType, Decl *TagDecl) {
|
|
assert((TagType == DeclSpec::TST_struct ||
|
|
TagType == DeclSpec::TST_interface ||
|
|
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;
|
|
|
|
// The Microsoft extension __interface does not permit nested classes.
|
|
if (getCurrentClass().IsInterface) {
|
|
Diag(RecordLoc, diag::err_invalid_member_in_interface)
|
|
<< /*ErrorType=*/6
|
|
<< (isa<NamedDecl>(TagDecl)
|
|
? cast<NamedDecl>(TagDecl)->getQualifiedNameAsString()
|
|
: "<anonymous>");
|
|
}
|
|
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,
|
|
TagType == DeclSpec::TST_interface);
|
|
|
|
if (TagDecl)
|
|
Actions.ActOnTagStartDefinition(getCurScope(), TagDecl);
|
|
|
|
SourceLocation FinalLoc;
|
|
bool IsFinalSpelledSealed = false;
|
|
|
|
// Parse the optional 'final' keyword.
|
|
if (getLangOpts().CPlusPlus && Tok.is(tok::identifier)) {
|
|
VirtSpecifiers::Specifier Specifier = isCXX11VirtSpecifier(Tok);
|
|
assert((Specifier == VirtSpecifiers::VS_Final ||
|
|
Specifier == VirtSpecifiers::VS_Sealed) &&
|
|
"not a class definition");
|
|
FinalLoc = ConsumeToken();
|
|
IsFinalSpelledSealed = Specifier == VirtSpecifiers::VS_Sealed;
|
|
|
|
if (TagType == DeclSpec::TST_interface)
|
|
Diag(FinalLoc, diag::err_override_control_interface)
|
|
<< VirtSpecifiers::getSpecifierName(Specifier);
|
|
else if (Specifier == VirtSpecifiers::VS_Final)
|
|
Diag(FinalLoc, getLangOpts().CPlusPlus11
|
|
? diag::warn_cxx98_compat_override_control_keyword
|
|
: diag::ext_override_control_keyword)
|
|
<< VirtSpecifiers::getSpecifierName(Specifier);
|
|
else if (Specifier == VirtSpecifiers::VS_Sealed)
|
|
Diag(FinalLoc, diag::ext_ms_sealed_keyword);
|
|
|
|
// Parse any C++11 attributes after 'final' keyword.
|
|
// These attributes are not allowed to appear here,
|
|
// and the only possible place for them to appertain
|
|
// to the class would be between class-key and class-name.
|
|
CheckMisplacedCXX11Attribute(Attrs, AttrFixitLoc);
|
|
}
|
|
|
|
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));
|
|
BalancedDelimiterTracker T(*this, tok::l_brace);
|
|
T.consumeOpen();
|
|
|
|
if (TagDecl)
|
|
Actions.ActOnStartCXXMemberDeclarations(getCurScope(), TagDecl, FinalLoc,
|
|
IsFinalSpelledSealed,
|
|
T.getOpenLocation());
|
|
|
|
// 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;
|
|
ParsedAttributes AccessAttrs(AttrFactory);
|
|
|
|
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.
|
|
|
|
if (getLangOpts().MicrosoftExt && (Tok.is(tok::kw___if_exists) ||
|
|
Tok.is(tok::kw___if_not_exists))) {
|
|
ParseMicrosoftIfExistsClassDeclaration((DeclSpec::TST)TagType, CurAS);
|
|
continue;
|
|
}
|
|
|
|
// Check for extraneous top-level semicolon.
|
|
if (Tok.is(tok::semi)) {
|
|
ConsumeExtraSemi(InsideStruct, TagType);
|
|
continue;
|
|
}
|
|
|
|
if (Tok.is(tok::annot_pragma_vis)) {
|
|
HandlePragmaVisibility();
|
|
continue;
|
|
}
|
|
|
|
if (Tok.is(tok::annot_pragma_pack)) {
|
|
HandlePragmaPack();
|
|
continue;
|
|
}
|
|
|
|
if (Tok.is(tok::annot_pragma_align)) {
|
|
HandlePragmaAlign();
|
|
continue;
|
|
}
|
|
|
|
if (Tok.is(tok::annot_pragma_openmp)) {
|
|
ParseOpenMPDeclarativeDirective();
|
|
continue;
|
|
}
|
|
|
|
// If we see a namespace here, a close brace was missing somewhere.
|
|
if (Tok.is(tok::kw_namespace)) {
|
|
DiagnoseUnexpectedNamespace(cast<NamedDecl>(TagDecl));
|
|
break;
|
|
}
|
|
|
|
AccessSpecifier AS = getAccessSpecifierIfPresent();
|
|
if (AS != AS_none) {
|
|
// Current token is a C++ access specifier.
|
|
CurAS = AS;
|
|
SourceLocation ASLoc = Tok.getLocation();
|
|
unsigned TokLength = Tok.getLength();
|
|
ConsumeToken();
|
|
AccessAttrs.clear();
|
|
MaybeParseGNUAttributes(AccessAttrs);
|
|
|
|
SourceLocation EndLoc;
|
|
if (Tok.is(tok::colon)) {
|
|
EndLoc = Tok.getLocation();
|
|
ConsumeToken();
|
|
} else if (Tok.is(tok::semi)) {
|
|
EndLoc = Tok.getLocation();
|
|
ConsumeToken();
|
|
Diag(EndLoc, diag::err_expected_colon)
|
|
<< FixItHint::CreateReplacement(EndLoc, ":");
|
|
} else {
|
|
EndLoc = ASLoc.getLocWithOffset(TokLength);
|
|
Diag(EndLoc, diag::err_expected_colon)
|
|
<< FixItHint::CreateInsertion(EndLoc, ":");
|
|
}
|
|
|
|
// The Microsoft extension __interface does not permit non-public
|
|
// access specifiers.
|
|
if (TagType == DeclSpec::TST_interface && CurAS != AS_public) {
|
|
Diag(ASLoc, diag::err_access_specifier_interface)
|
|
<< (CurAS == AS_protected);
|
|
}
|
|
|
|
if (Actions.ActOnAccessSpecifier(AS, ASLoc, EndLoc,
|
|
AccessAttrs.getList())) {
|
|
// found another attribute than only annotations
|
|
AccessAttrs.clear();
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
// Parse all the comma separated declarators.
|
|
ParseCXXClassMemberDeclaration(CurAS, AccessAttrs.getList());
|
|
}
|
|
|
|
T.consumeClose();
|
|
} else {
|
|
SkipUntil(tok::r_brace);
|
|
}
|
|
|
|
// If attributes exist after class contents, parse them.
|
|
ParsedAttributes attrs(AttrFactory);
|
|
MaybeParseGNUAttributes(attrs);
|
|
|
|
if (TagDecl)
|
|
Actions.ActOnFinishCXXMemberSpecification(getCurScope(), RecordLoc, TagDecl,
|
|
T.getOpenLocation(),
|
|
T.getCloseLocation(),
|
|
attrs.getList());
|
|
|
|
// C++11 [class.mem]p2:
|
|
// Within the class member-specification, the class is regarded as complete
|
|
// within function bodies, default arguments, and
|
|
// brace-or-equal-initializers for non-static data members (including such
|
|
// things in nested classes).
|
|
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, along with any
|
|
// delayed attributes.
|
|
SourceLocation SavedPrevTokLocation = PrevTokLocation;
|
|
ParseLexedAttributes(getCurrentClass());
|
|
ParseLexedMethodDeclarations(getCurrentClass());
|
|
|
|
// We've finished with all pending member declarations.
|
|
Actions.ActOnFinishCXXMemberDecls();
|
|
|
|
ParseLexedMemberInitializers(getCurrentClass());
|
|
ParseLexedMethodDefs(getCurrentClass());
|
|
PrevTokLocation = SavedPrevTokLocation;
|
|
}
|
|
|
|
if (TagDecl)
|
|
Actions.ActOnTagFinishDefinition(getCurScope(), TagDecl,
|
|
T.getCloseLocation());
|
|
|
|
// Leave the class scope.
|
|
ParsingDef.Pop();
|
|
ClassScope.Exit();
|
|
}
|
|
|
|
void Parser::DiagnoseUnexpectedNamespace(NamedDecl *D) {
|
|
assert(Tok.is(tok::kw_namespace));
|
|
|
|
// FIXME: Suggest where the close brace should have gone by looking
|
|
// at indentation changes within the definition body.
|
|
Diag(D->getLocation(),
|
|
diag::err_missing_end_of_definition) << D;
|
|
Diag(Tok.getLocation(),
|
|
diag::note_missing_end_of_definition_before) << D;
|
|
|
|
// Push '};' onto the token stream to recover.
|
|
PP.EnterToken(Tok);
|
|
|
|
Tok.startToken();
|
|
Tok.setLocation(PP.getLocForEndOfToken(PrevTokLocation));
|
|
Tok.setKind(tok::semi);
|
|
PP.EnterToken(Tok);
|
|
|
|
Tok.setKind(tok::r_brace);
|
|
}
|
|
|
|
/// 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();
|
|
|
|
SmallVector<CXXCtorInitializer*, 4> MemInitializers;
|
|
bool AnyErrors = false;
|
|
|
|
do {
|
|
if (Tok.is(tok::code_completion)) {
|
|
Actions.CodeCompleteConstructorInitializer(ConstructorDecl,
|
|
MemInitializers);
|
|
return cutOffParsing();
|
|
} 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, StopAtSemi | StopBeforeMatch);
|
|
break;
|
|
}
|
|
} while (true);
|
|
|
|
Actions.ActOnMemInitializers(ConstructorDecl, ColonLoc, MemInitializers,
|
|
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++0x] mem-initializer-id braced-init-list
|
|
///
|
|
/// [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(), /*EnteringContext=*/false);
|
|
ParsedType TemplateTypeTy;
|
|
if (Tok.is(tok::annot_template_id)) {
|
|
TemplateIdAnnotation *TemplateId = takeTemplateIdAnnotation(Tok);
|
|
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);
|
|
}
|
|
}
|
|
// Uses of decltype will already have been converted to annot_decltype by
|
|
// ParseOptionalCXXScopeSpecifier at this point.
|
|
if (!TemplateTypeTy && Tok.isNot(tok::identifier)
|
|
&& Tok.isNot(tok::annot_decltype)) {
|
|
Diag(Tok, diag::err_expected_member_or_base_name);
|
|
return true;
|
|
}
|
|
|
|
IdentifierInfo *II = 0;
|
|
DeclSpec DS(AttrFactory);
|
|
SourceLocation IdLoc = Tok.getLocation();
|
|
if (Tok.is(tok::annot_decltype)) {
|
|
// Get the decltype expression, if there is one.
|
|
ParseDecltypeSpecifier(DS);
|
|
} else {
|
|
if (Tok.is(tok::identifier))
|
|
// Get the identifier. This may be a member name or a class name,
|
|
// but we'll let the semantic analysis determine which it is.
|
|
II = Tok.getIdentifierInfo();
|
|
ConsumeToken();
|
|
}
|
|
|
|
|
|
// Parse the '('.
|
|
if (getLangOpts().CPlusPlus11 && Tok.is(tok::l_brace)) {
|
|
Diag(Tok, diag::warn_cxx98_compat_generalized_initializer_lists);
|
|
|
|
ExprResult InitList = ParseBraceInitializer();
|
|
if (InitList.isInvalid())
|
|
return true;
|
|
|
|
SourceLocation EllipsisLoc;
|
|
if (Tok.is(tok::ellipsis))
|
|
EllipsisLoc = ConsumeToken();
|
|
|
|
return Actions.ActOnMemInitializer(ConstructorDecl, getCurScope(), SS, II,
|
|
TemplateTypeTy, DS, IdLoc,
|
|
InitList.take(), EllipsisLoc);
|
|
} else if(Tok.is(tok::l_paren)) {
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
T.consumeOpen();
|
|
|
|
// Parse the optional expression-list.
|
|
ExprVector ArgExprs;
|
|
CommaLocsTy CommaLocs;
|
|
if (Tok.isNot(tok::r_paren) && ParseExpressionList(ArgExprs, CommaLocs)) {
|
|
SkipUntil(tok::r_paren, StopAtSemi);
|
|
return true;
|
|
}
|
|
|
|
T.consumeClose();
|
|
|
|
SourceLocation EllipsisLoc;
|
|
if (Tok.is(tok::ellipsis))
|
|
EllipsisLoc = ConsumeToken();
|
|
|
|
return Actions.ActOnMemInitializer(ConstructorDecl, getCurScope(), SS, II,
|
|
TemplateTypeTy, DS, IdLoc,
|
|
T.getOpenLocation(), ArgExprs,
|
|
T.getCloseLocation(), EllipsisLoc);
|
|
}
|
|
|
|
Diag(Tok, getLangOpts().CPlusPlus11 ? diag::err_expected_lparen_or_lbrace
|
|
: diag::err_expected_lparen);
|
|
return true;
|
|
}
|
|
|
|
/// \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::tryParseExceptionSpecification(
|
|
SourceRange &SpecificationRange,
|
|
SmallVectorImpl<ParsedType> &DynamicExceptions,
|
|
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;
|
|
|
|
Diag(Tok, diag::warn_cxx98_compat_noexcept_decl);
|
|
|
|
// 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.
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
T.consumeOpen();
|
|
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());
|
|
T.consumeClose();
|
|
NoexceptRange = SourceRange(KeywordLoc, T.getCloseLocation());
|
|
} 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;
|
|
}
|
|
|
|
static void diagnoseDynamicExceptionSpecification(
|
|
Parser &P, const SourceRange &Range, bool IsNoexcept) {
|
|
if (P.getLangOpts().CPlusPlus11) {
|
|
const char *Replacement = IsNoexcept ? "noexcept" : "noexcept(false)";
|
|
P.Diag(Range.getBegin(), diag::warn_exception_spec_deprecated) << Range;
|
|
P.Diag(Range.getBegin(), diag::note_exception_spec_deprecated)
|
|
<< Replacement << FixItHint::CreateReplacement(Range, Replacement);
|
|
}
|
|
}
|
|
|
|
/// 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,
|
|
SmallVectorImpl<ParsedType> &Exceptions,
|
|
SmallVectorImpl<SourceRange> &Ranges) {
|
|
assert(Tok.is(tok::kw_throw) && "expected throw");
|
|
|
|
SpecificationRange.setBegin(ConsumeToken());
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (T.consumeOpen()) {
|
|
Diag(Tok, diag::err_expected_lparen_after) << "throw";
|
|
SpecificationRange.setEnd(SpecificationRange.getBegin());
|
|
return EST_DynamicNone;
|
|
}
|
|
|
|
// Parse throw(...), a Microsoft extension that means "this function
|
|
// can throw anything".
|
|
if (Tok.is(tok::ellipsis)) {
|
|
SourceLocation EllipsisLoc = ConsumeToken();
|
|
if (!getLangOpts().MicrosoftExt)
|
|
Diag(EllipsisLoc, diag::ext_ellipsis_exception_spec);
|
|
T.consumeClose();
|
|
SpecificationRange.setEnd(T.getCloseLocation());
|
|
diagnoseDynamicExceptionSpecification(*this, SpecificationRange, false);
|
|
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;
|
|
}
|
|
|
|
T.consumeClose();
|
|
SpecificationRange.setEnd(T.getCloseLocation());
|
|
diagnoseDynamicExceptionSpecification(*this, SpecificationRange,
|
|
Exceptions.empty());
|
|
return Exceptions.empty() ? EST_DynamicNone : EST_Dynamic;
|
|
}
|
|
|
|
/// ParseTrailingReturnType - Parse a trailing return type on a new-style
|
|
/// function declaration.
|
|
TypeResult Parser::ParseTrailingReturnType(SourceRange &Range) {
|
|
assert(Tok.is(tok::arrow) && "expected arrow");
|
|
|
|
ConsumeToken();
|
|
|
|
return ParseTypeName(&Range, Declarator::TrailingReturnContext);
|
|
}
|
|
|
|
/// \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,
|
|
bool IsInterface) {
|
|
assert((NonNestedClass || !ClassStack.empty()) &&
|
|
"Nested class without outer class");
|
|
ClassStack.push(new ParsingClass(ClassDecl, NonNestedClass, IsInterface));
|
|
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.
|
|
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();
|
|
}
|
|
|
|
/// \brief Try to parse an 'identifier' which appears within an attribute-token.
|
|
///
|
|
/// \return the parsed identifier on success, and 0 if the next token is not an
|
|
/// attribute-token.
|
|
///
|
|
/// C++11 [dcl.attr.grammar]p3:
|
|
/// If a keyword or an alternative token that satisfies the syntactic
|
|
/// requirements of an identifier is contained in an attribute-token,
|
|
/// it is considered an identifier.
|
|
IdentifierInfo *Parser::TryParseCXX11AttributeIdentifier(SourceLocation &Loc) {
|
|
switch (Tok.getKind()) {
|
|
default:
|
|
// Identifiers and keywords have identifier info attached.
|
|
if (IdentifierInfo *II = Tok.getIdentifierInfo()) {
|
|
Loc = ConsumeToken();
|
|
return II;
|
|
}
|
|
return 0;
|
|
|
|
case tok::ampamp: // 'and'
|
|
case tok::pipe: // 'bitor'
|
|
case tok::pipepipe: // 'or'
|
|
case tok::caret: // 'xor'
|
|
case tok::tilde: // 'compl'
|
|
case tok::amp: // 'bitand'
|
|
case tok::ampequal: // 'and_eq'
|
|
case tok::pipeequal: // 'or_eq'
|
|
case tok::caretequal: // 'xor_eq'
|
|
case tok::exclaim: // 'not'
|
|
case tok::exclaimequal: // 'not_eq'
|
|
// Alternative tokens do not have identifier info, but their spelling
|
|
// starts with an alphabetical character.
|
|
SmallString<8> SpellingBuf;
|
|
StringRef Spelling = PP.getSpelling(Tok.getLocation(), SpellingBuf);
|
|
if (isLetter(Spelling[0])) {
|
|
Loc = ConsumeToken();
|
|
return &PP.getIdentifierTable().get(Spelling);
|
|
}
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static bool IsBuiltInOrStandardCXX11Attribute(IdentifierInfo *AttrName,
|
|
IdentifierInfo *ScopeName) {
|
|
switch (AttributeList::getKind(AttrName, ScopeName,
|
|
AttributeList::AS_CXX11)) {
|
|
case AttributeList::AT_CarriesDependency:
|
|
case AttributeList::AT_FallThrough:
|
|
case AttributeList::AT_CXX11NoReturn: {
|
|
return true;
|
|
}
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/// ParseCXX11AttributeSpecifier - Parse a C++11 attribute-specifier. Currently
|
|
/// only parses standard attributes.
|
|
///
|
|
/// [C++11] attribute-specifier:
|
|
/// '[' '[' attribute-list ']' ']'
|
|
/// alignment-specifier
|
|
///
|
|
/// [C++11] attribute-list:
|
|
/// attribute[opt]
|
|
/// attribute-list ',' attribute[opt]
|
|
/// attribute '...'
|
|
/// attribute-list ',' attribute '...'
|
|
///
|
|
/// [C++11] attribute:
|
|
/// attribute-token attribute-argument-clause[opt]
|
|
///
|
|
/// [C++11] attribute-token:
|
|
/// identifier
|
|
/// attribute-scoped-token
|
|
///
|
|
/// [C++11] attribute-scoped-token:
|
|
/// attribute-namespace '::' identifier
|
|
///
|
|
/// [C++11] attribute-namespace:
|
|
/// identifier
|
|
///
|
|
/// [C++11] attribute-argument-clause:
|
|
/// '(' balanced-token-seq ')'
|
|
///
|
|
/// [C++11] balanced-token-seq:
|
|
/// balanced-token
|
|
/// balanced-token-seq balanced-token
|
|
///
|
|
/// [C++11] balanced-token:
|
|
/// '(' balanced-token-seq ')'
|
|
/// '[' balanced-token-seq ']'
|
|
/// '{' balanced-token-seq '}'
|
|
/// any token but '(', ')', '[', ']', '{', or '}'
|
|
void Parser::ParseCXX11AttributeSpecifier(ParsedAttributes &attrs,
|
|
SourceLocation *endLoc) {
|
|
if (Tok.is(tok::kw_alignas)) {
|
|
Diag(Tok.getLocation(), diag::warn_cxx98_compat_alignas);
|
|
ParseAlignmentSpecifier(attrs, endLoc);
|
|
return;
|
|
}
|
|
|
|
assert(Tok.is(tok::l_square) && NextToken().is(tok::l_square)
|
|
&& "Not a C++11 attribute list");
|
|
|
|
Diag(Tok.getLocation(), diag::warn_cxx98_compat_attribute);
|
|
|
|
ConsumeBracket();
|
|
ConsumeBracket();
|
|
|
|
llvm::SmallDenseMap<IdentifierInfo*, SourceLocation, 4> SeenAttrs;
|
|
|
|
while (Tok.isNot(tok::r_square)) {
|
|
// attribute not present
|
|
if (Tok.is(tok::comma)) {
|
|
ConsumeToken();
|
|
continue;
|
|
}
|
|
|
|
SourceLocation ScopeLoc, AttrLoc;
|
|
IdentifierInfo *ScopeName = 0, *AttrName = 0;
|
|
|
|
AttrName = TryParseCXX11AttributeIdentifier(AttrLoc);
|
|
if (!AttrName)
|
|
// Break out to the "expected ']'" diagnostic.
|
|
break;
|
|
|
|
// scoped attribute
|
|
if (Tok.is(tok::coloncolon)) {
|
|
ConsumeToken();
|
|
|
|
ScopeName = AttrName;
|
|
ScopeLoc = AttrLoc;
|
|
|
|
AttrName = TryParseCXX11AttributeIdentifier(AttrLoc);
|
|
if (!AttrName) {
|
|
Diag(Tok.getLocation(), diag::err_expected_ident);
|
|
SkipUntil(tok::r_square, tok::comma, StopAtSemi | StopBeforeMatch);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
bool StandardAttr = IsBuiltInOrStandardCXX11Attribute(AttrName,ScopeName);
|
|
bool AttrParsed = false;
|
|
|
|
if (StandardAttr &&
|
|
!SeenAttrs.insert(std::make_pair(AttrName, AttrLoc)).second)
|
|
Diag(AttrLoc, diag::err_cxx11_attribute_repeated)
|
|
<< AttrName << SourceRange(SeenAttrs[AttrName]);
|
|
|
|
// Parse attribute arguments
|
|
if (Tok.is(tok::l_paren)) {
|
|
if (ScopeName && ScopeName->getName() == "gnu") {
|
|
ParseGNUAttributeArgs(AttrName, AttrLoc, attrs, endLoc,
|
|
ScopeName, ScopeLoc, AttributeList::AS_CXX11);
|
|
AttrParsed = true;
|
|
} else {
|
|
if (StandardAttr)
|
|
Diag(Tok.getLocation(), diag::err_cxx11_attribute_forbids_arguments)
|
|
<< AttrName->getName();
|
|
|
|
// FIXME: handle other formats of c++11 attribute arguments
|
|
ConsumeParen();
|
|
SkipUntil(tok::r_paren);
|
|
}
|
|
}
|
|
|
|
if (!AttrParsed)
|
|
attrs.addNew(AttrName,
|
|
SourceRange(ScopeLoc.isValid() ? ScopeLoc : AttrLoc,
|
|
AttrLoc),
|
|
ScopeName, ScopeLoc, 0, 0, AttributeList::AS_CXX11);
|
|
|
|
if (Tok.is(tok::ellipsis)) {
|
|
ConsumeToken();
|
|
|
|
Diag(Tok, diag::err_cxx11_attribute_forbids_ellipsis)
|
|
<< AttrName->getName();
|
|
}
|
|
}
|
|
|
|
if (ExpectAndConsume(tok::r_square, diag::err_expected_rsquare))
|
|
SkipUntil(tok::r_square);
|
|
if (endLoc)
|
|
*endLoc = Tok.getLocation();
|
|
if (ExpectAndConsume(tok::r_square, diag::err_expected_rsquare))
|
|
SkipUntil(tok::r_square);
|
|
}
|
|
|
|
/// ParseCXX11Attributes - Parse a C++11 attribute-specifier-seq.
|
|
///
|
|
/// attribute-specifier-seq:
|
|
/// attribute-specifier-seq[opt] attribute-specifier
|
|
void Parser::ParseCXX11Attributes(ParsedAttributesWithRange &attrs,
|
|
SourceLocation *endLoc) {
|
|
assert(getLangOpts().CPlusPlus11);
|
|
|
|
SourceLocation StartLoc = Tok.getLocation(), Loc;
|
|
if (!endLoc)
|
|
endLoc = &Loc;
|
|
|
|
do {
|
|
ParseCXX11AttributeSpecifier(attrs, endLoc);
|
|
} while (isCXX11AttributeSpecifier());
|
|
|
|
attrs.Range = SourceRange(StartLoc, *endLoc);
|
|
}
|
|
|
|
void Parser::DiagnoseAndSkipCXX11Attributes() {
|
|
if (!isCXX11AttributeSpecifier())
|
|
return;
|
|
|
|
// Start and end location of an attribute or an attribute list.
|
|
SourceLocation StartLoc = Tok.getLocation();
|
|
SourceLocation EndLoc;
|
|
|
|
do {
|
|
if (Tok.is(tok::l_square)) {
|
|
BalancedDelimiterTracker T(*this, tok::l_square);
|
|
T.consumeOpen();
|
|
T.skipToEnd();
|
|
EndLoc = T.getCloseLocation();
|
|
} else {
|
|
assert(Tok.is(tok::kw_alignas) && "not an attribute specifier");
|
|
ConsumeToken();
|
|
BalancedDelimiterTracker T(*this, tok::l_paren);
|
|
if (!T.consumeOpen())
|
|
T.skipToEnd();
|
|
EndLoc = T.getCloseLocation();
|
|
}
|
|
} while (isCXX11AttributeSpecifier());
|
|
|
|
if (EndLoc.isValid()) {
|
|
SourceRange Range(StartLoc, EndLoc);
|
|
Diag(StartLoc, diag::err_attributes_not_allowed)
|
|
<< Range;
|
|
}
|
|
}
|
|
|
|
/// 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)) {
|
|
// FIXME: If this is actually a C++11 attribute, parse it as one.
|
|
ConsumeBracket();
|
|
SkipUntil(tok::r_square, StopAtSemi | StopBeforeMatch);
|
|
if (endLoc) *endLoc = Tok.getLocation();
|
|
ExpectAndConsume(tok::r_square, diag::err_expected_rsquare);
|
|
}
|
|
}
|
|
|
|
void Parser::ParseMicrosoftIfExistsClassDeclaration(DeclSpec::TST TagType,
|
|
AccessSpecifier& CurAS) {
|
|
IfExistsCondition Result;
|
|
if (ParseMicrosoftIfExistsCondition(Result))
|
|
return;
|
|
|
|
BalancedDelimiterTracker Braces(*this, tok::l_brace);
|
|
if (Braces.consumeOpen()) {
|
|
Diag(Tok, diag::err_expected_lbrace);
|
|
return;
|
|
}
|
|
|
|
switch (Result.Behavior) {
|
|
case IEB_Parse:
|
|
// Parse the declarations below.
|
|
break;
|
|
|
|
case IEB_Dependent:
|
|
Diag(Result.KeywordLoc, diag::warn_microsoft_dependent_exists)
|
|
<< Result.IsIfExists;
|
|
// Fall through to skip.
|
|
|
|
case IEB_Skip:
|
|
Braces.skipToEnd();
|
|
return;
|
|
}
|
|
|
|
while (Tok.isNot(tok::r_brace) && Tok.isNot(tok::eof)) {
|
|
// __if_exists, __if_not_exists can nest.
|
|
if ((Tok.is(tok::kw___if_exists) || Tok.is(tok::kw___if_not_exists))) {
|
|
ParseMicrosoftIfExistsClassDeclaration((DeclSpec::TST)TagType, CurAS);
|
|
continue;
|
|
}
|
|
|
|
// Check for extraneous top-level semicolon.
|
|
if (Tok.is(tok::semi)) {
|
|
ConsumeExtraSemi(InsideStruct, TagType);
|
|
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;
|
|
}
|
|
|
|
// Parse all the comma separated declarators.
|
|
ParseCXXClassMemberDeclaration(CurAS, 0);
|
|
}
|
|
|
|
Braces.consumeClose();
|
|
}
|