forked from OSchip/llvm-project
1028 lines
36 KiB
C++
1028 lines
36 KiB
C++
//===--- SemaDeclSpec.cpp - Declaration Specifier Semantic Analysis -------===//
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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 semantic analysis for declaration specifiers.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Sema/DeclSpec.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Expr.h"
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#include "clang/AST/NestedNameSpecifier.h"
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#include "clang/AST/TypeLoc.h"
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#include "clang/Basic/LangOptions.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Parse/ParseDiagnostic.h" // FIXME: remove this back-dependency!
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#include "clang/Sema/LocInfoType.h"
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#include "clang/Sema/ParsedTemplate.h"
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#include "clang/Sema/Sema.h"
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#include "clang/Sema/SemaDiagnostic.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <cstring>
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using namespace clang;
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static DiagnosticBuilder Diag(DiagnosticsEngine &D, SourceLocation Loc,
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unsigned DiagID) {
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return D.Report(Loc, DiagID);
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}
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void UnqualifiedId::setTemplateId(TemplateIdAnnotation *TemplateId) {
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assert(TemplateId && "NULL template-id annotation?");
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Kind = IK_TemplateId;
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this->TemplateId = TemplateId;
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StartLocation = TemplateId->TemplateNameLoc;
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EndLocation = TemplateId->RAngleLoc;
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}
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void UnqualifiedId::setConstructorTemplateId(TemplateIdAnnotation *TemplateId) {
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assert(TemplateId && "NULL template-id annotation?");
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Kind = IK_ConstructorTemplateId;
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this->TemplateId = TemplateId;
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StartLocation = TemplateId->TemplateNameLoc;
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EndLocation = TemplateId->RAngleLoc;
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}
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void CXXScopeSpec::Extend(ASTContext &Context, SourceLocation TemplateKWLoc,
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TypeLoc TL, SourceLocation ColonColonLoc) {
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Builder.Extend(Context, TemplateKWLoc, TL, ColonColonLoc);
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if (Range.getBegin().isInvalid())
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Range.setBegin(TL.getBeginLoc());
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Range.setEnd(ColonColonLoc);
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assert(Range == Builder.getSourceRange() &&
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"NestedNameSpecifierLoc range computation incorrect");
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}
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void CXXScopeSpec::Extend(ASTContext &Context, IdentifierInfo *Identifier,
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SourceLocation IdentifierLoc,
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SourceLocation ColonColonLoc) {
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Builder.Extend(Context, Identifier, IdentifierLoc, ColonColonLoc);
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if (Range.getBegin().isInvalid())
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Range.setBegin(IdentifierLoc);
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Range.setEnd(ColonColonLoc);
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assert(Range == Builder.getSourceRange() &&
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"NestedNameSpecifierLoc range computation incorrect");
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}
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void CXXScopeSpec::Extend(ASTContext &Context, NamespaceDecl *Namespace,
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SourceLocation NamespaceLoc,
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SourceLocation ColonColonLoc) {
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Builder.Extend(Context, Namespace, NamespaceLoc, ColonColonLoc);
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if (Range.getBegin().isInvalid())
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Range.setBegin(NamespaceLoc);
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Range.setEnd(ColonColonLoc);
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assert(Range == Builder.getSourceRange() &&
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"NestedNameSpecifierLoc range computation incorrect");
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}
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void CXXScopeSpec::Extend(ASTContext &Context, NamespaceAliasDecl *Alias,
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SourceLocation AliasLoc,
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SourceLocation ColonColonLoc) {
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Builder.Extend(Context, Alias, AliasLoc, ColonColonLoc);
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if (Range.getBegin().isInvalid())
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Range.setBegin(AliasLoc);
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Range.setEnd(ColonColonLoc);
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assert(Range == Builder.getSourceRange() &&
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"NestedNameSpecifierLoc range computation incorrect");
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}
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void CXXScopeSpec::MakeGlobal(ASTContext &Context,
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SourceLocation ColonColonLoc) {
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Builder.MakeGlobal(Context, ColonColonLoc);
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Range = SourceRange(ColonColonLoc);
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assert(Range == Builder.getSourceRange() &&
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"NestedNameSpecifierLoc range computation incorrect");
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}
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void CXXScopeSpec::MakeTrivial(ASTContext &Context,
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NestedNameSpecifier *Qualifier, SourceRange R) {
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Builder.MakeTrivial(Context, Qualifier, R);
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Range = R;
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}
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void CXXScopeSpec::Adopt(NestedNameSpecifierLoc Other) {
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if (!Other) {
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Range = SourceRange();
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Builder.Clear();
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return;
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}
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Range = Other.getSourceRange();
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Builder.Adopt(Other);
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}
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SourceLocation CXXScopeSpec::getLastQualifierNameLoc() const {
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if (!Builder.getRepresentation())
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return SourceLocation();
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return Builder.getTemporary().getLocalBeginLoc();
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}
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NestedNameSpecifierLoc
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CXXScopeSpec::getWithLocInContext(ASTContext &Context) const {
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if (!Builder.getRepresentation())
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return NestedNameSpecifierLoc();
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return Builder.getWithLocInContext(Context);
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}
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/// DeclaratorChunk::getFunction - Return a DeclaratorChunk for a function.
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/// "TheDeclarator" is the declarator that this will be added to.
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DeclaratorChunk DeclaratorChunk::getFunction(bool hasProto,
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bool isAmbiguous,
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SourceLocation LParenLoc,
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ParamInfo *ArgInfo,
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unsigned NumArgs,
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SourceLocation EllipsisLoc,
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SourceLocation RParenLoc,
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unsigned TypeQuals,
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bool RefQualifierIsLvalueRef,
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SourceLocation RefQualifierLoc,
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SourceLocation ConstQualifierLoc,
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SourceLocation
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VolatileQualifierLoc,
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SourceLocation MutableLoc,
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ExceptionSpecificationType
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ESpecType,
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SourceLocation ESpecLoc,
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ParsedType *Exceptions,
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SourceRange *ExceptionRanges,
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unsigned NumExceptions,
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Expr *NoexceptExpr,
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SourceLocation LocalRangeBegin,
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SourceLocation LocalRangeEnd,
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Declarator &TheDeclarator,
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TypeResult TrailingReturnType) {
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DeclaratorChunk I;
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I.Kind = Function;
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I.Loc = LocalRangeBegin;
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I.EndLoc = LocalRangeEnd;
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I.Fun.AttrList = 0;
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I.Fun.hasPrototype = hasProto;
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I.Fun.isVariadic = EllipsisLoc.isValid();
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I.Fun.isAmbiguous = isAmbiguous;
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I.Fun.LParenLoc = LParenLoc.getRawEncoding();
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I.Fun.EllipsisLoc = EllipsisLoc.getRawEncoding();
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I.Fun.RParenLoc = RParenLoc.getRawEncoding();
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I.Fun.DeleteArgInfo = false;
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I.Fun.TypeQuals = TypeQuals;
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I.Fun.NumArgs = NumArgs;
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I.Fun.ArgInfo = 0;
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I.Fun.RefQualifierIsLValueRef = RefQualifierIsLvalueRef;
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I.Fun.RefQualifierLoc = RefQualifierLoc.getRawEncoding();
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I.Fun.ConstQualifierLoc = ConstQualifierLoc.getRawEncoding();
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I.Fun.VolatileQualifierLoc = VolatileQualifierLoc.getRawEncoding();
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I.Fun.MutableLoc = MutableLoc.getRawEncoding();
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I.Fun.ExceptionSpecType = ESpecType;
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I.Fun.ExceptionSpecLoc = ESpecLoc.getRawEncoding();
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I.Fun.NumExceptions = 0;
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I.Fun.Exceptions = 0;
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I.Fun.NoexceptExpr = 0;
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I.Fun.HasTrailingReturnType = TrailingReturnType.isUsable() ||
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TrailingReturnType.isInvalid();
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I.Fun.TrailingReturnType = TrailingReturnType.get();
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// new[] an argument array if needed.
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if (NumArgs) {
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// If the 'InlineParams' in Declarator is unused and big enough, put our
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// parameter list there (in an effort to avoid new/delete traffic). If it
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// is already used (consider a function returning a function pointer) or too
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// small (function taking too many arguments), go to the heap.
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if (!TheDeclarator.InlineParamsUsed &&
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NumArgs <= llvm::array_lengthof(TheDeclarator.InlineParams)) {
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I.Fun.ArgInfo = TheDeclarator.InlineParams;
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I.Fun.DeleteArgInfo = false;
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TheDeclarator.InlineParamsUsed = true;
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} else {
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I.Fun.ArgInfo = new DeclaratorChunk::ParamInfo[NumArgs];
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I.Fun.DeleteArgInfo = true;
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}
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memcpy(I.Fun.ArgInfo, ArgInfo, sizeof(ArgInfo[0])*NumArgs);
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}
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// Check what exception specification information we should actually store.
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switch (ESpecType) {
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default: break; // By default, save nothing.
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case EST_Dynamic:
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// new[] an exception array if needed
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if (NumExceptions) {
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I.Fun.NumExceptions = NumExceptions;
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I.Fun.Exceptions = new DeclaratorChunk::TypeAndRange[NumExceptions];
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for (unsigned i = 0; i != NumExceptions; ++i) {
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I.Fun.Exceptions[i].Ty = Exceptions[i];
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I.Fun.Exceptions[i].Range = ExceptionRanges[i];
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}
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}
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break;
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case EST_ComputedNoexcept:
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I.Fun.NoexceptExpr = NoexceptExpr;
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break;
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}
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return I;
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}
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bool Declarator::isDeclarationOfFunction() const {
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for (unsigned i = 0, i_end = DeclTypeInfo.size(); i < i_end; ++i) {
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switch (DeclTypeInfo[i].Kind) {
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case DeclaratorChunk::Function:
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return true;
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case DeclaratorChunk::Paren:
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continue;
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case DeclaratorChunk::Pointer:
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case DeclaratorChunk::Reference:
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case DeclaratorChunk::Array:
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case DeclaratorChunk::BlockPointer:
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case DeclaratorChunk::MemberPointer:
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return false;
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}
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llvm_unreachable("Invalid type chunk");
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}
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switch (DS.getTypeSpecType()) {
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case TST_atomic:
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case TST_auto:
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case TST_bool:
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case TST_char:
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case TST_char16:
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case TST_char32:
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case TST_class:
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case TST_decimal128:
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case TST_decimal32:
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case TST_decimal64:
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case TST_double:
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case TST_enum:
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case TST_error:
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case TST_float:
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case TST_half:
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case TST_int:
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case TST_int128:
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case TST_struct:
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case TST_interface:
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case TST_union:
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case TST_unknown_anytype:
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case TST_unspecified:
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case TST_void:
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case TST_wchar:
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case TST_image1d_t:
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case TST_image1d_array_t:
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case TST_image1d_buffer_t:
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case TST_image2d_t:
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case TST_image2d_array_t:
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case TST_image3d_t:
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case TST_event_t:
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return false;
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case TST_decltype:
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case TST_typeofExpr:
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if (Expr *E = DS.getRepAsExpr())
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return E->getType()->isFunctionType();
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return false;
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case TST_underlyingType:
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case TST_typename:
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case TST_typeofType: {
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QualType QT = DS.getRepAsType().get();
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if (QT.isNull())
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return false;
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if (const LocInfoType *LIT = dyn_cast<LocInfoType>(QT))
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QT = LIT->getType();
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if (QT.isNull())
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return false;
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return QT->isFunctionType();
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}
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}
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llvm_unreachable("Invalid TypeSpecType!");
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}
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/// getParsedSpecifiers - Return a bitmask of which flavors of specifiers this
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/// declaration specifier includes.
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///
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unsigned DeclSpec::getParsedSpecifiers() const {
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unsigned Res = 0;
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if (StorageClassSpec != SCS_unspecified ||
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SCS_thread_specified)
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Res |= PQ_StorageClassSpecifier;
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if (TypeQualifiers != TQ_unspecified)
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Res |= PQ_TypeQualifier;
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if (hasTypeSpecifier())
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Res |= PQ_TypeSpecifier;
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if (FS_inline_specified || FS_virtual_specified || FS_explicit_specified ||
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FS_noreturn_specified)
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Res |= PQ_FunctionSpecifier;
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return Res;
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}
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template <class T> static bool BadSpecifier(T TNew, T TPrev,
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const char *&PrevSpec,
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unsigned &DiagID,
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bool IsExtension = true) {
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PrevSpec = DeclSpec::getSpecifierName(TPrev);
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if (TNew != TPrev)
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DiagID = diag::err_invalid_decl_spec_combination;
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else
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DiagID = IsExtension ? diag::ext_duplicate_declspec :
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diag::warn_duplicate_declspec;
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return true;
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}
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const char *DeclSpec::getSpecifierName(DeclSpec::SCS S) {
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switch (S) {
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case DeclSpec::SCS_unspecified: return "unspecified";
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case DeclSpec::SCS_typedef: return "typedef";
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case DeclSpec::SCS_extern: return "extern";
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case DeclSpec::SCS_static: return "static";
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case DeclSpec::SCS_auto: return "auto";
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case DeclSpec::SCS_register: return "register";
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case DeclSpec::SCS_private_extern: return "__private_extern__";
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case DeclSpec::SCS_mutable: return "mutable";
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}
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llvm_unreachable("Unknown typespec!");
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}
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const char *DeclSpec::getSpecifierName(TSW W) {
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switch (W) {
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case TSW_unspecified: return "unspecified";
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case TSW_short: return "short";
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case TSW_long: return "long";
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case TSW_longlong: return "long long";
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}
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llvm_unreachable("Unknown typespec!");
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}
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const char *DeclSpec::getSpecifierName(TSC C) {
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switch (C) {
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case TSC_unspecified: return "unspecified";
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case TSC_imaginary: return "imaginary";
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case TSC_complex: return "complex";
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}
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llvm_unreachable("Unknown typespec!");
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}
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const char *DeclSpec::getSpecifierName(TSS S) {
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switch (S) {
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case TSS_unspecified: return "unspecified";
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case TSS_signed: return "signed";
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case TSS_unsigned: return "unsigned";
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}
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llvm_unreachable("Unknown typespec!");
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}
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const char *DeclSpec::getSpecifierName(DeclSpec::TST T) {
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switch (T) {
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case DeclSpec::TST_unspecified: return "unspecified";
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case DeclSpec::TST_void: return "void";
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case DeclSpec::TST_char: return "char";
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case DeclSpec::TST_wchar: return "wchar_t";
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case DeclSpec::TST_char16: return "char16_t";
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case DeclSpec::TST_char32: return "char32_t";
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case DeclSpec::TST_int: return "int";
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case DeclSpec::TST_int128: return "__int128";
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case DeclSpec::TST_half: return "half";
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case DeclSpec::TST_float: return "float";
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case DeclSpec::TST_double: return "double";
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case DeclSpec::TST_bool: return "_Bool";
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case DeclSpec::TST_decimal32: return "_Decimal32";
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case DeclSpec::TST_decimal64: return "_Decimal64";
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case DeclSpec::TST_decimal128: return "_Decimal128";
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case DeclSpec::TST_enum: return "enum";
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case DeclSpec::TST_class: return "class";
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case DeclSpec::TST_union: return "union";
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case DeclSpec::TST_struct: return "struct";
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case DeclSpec::TST_interface: return "__interface";
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case DeclSpec::TST_typename: return "type-name";
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case DeclSpec::TST_typeofType:
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case DeclSpec::TST_typeofExpr: return "typeof";
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case DeclSpec::TST_auto: return "auto";
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case DeclSpec::TST_decltype: return "(decltype)";
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case DeclSpec::TST_underlyingType: return "__underlying_type";
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case DeclSpec::TST_unknown_anytype: return "__unknown_anytype";
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case DeclSpec::TST_atomic: return "_Atomic";
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case DeclSpec::TST_image1d_t: return "image1d_t";
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case DeclSpec::TST_image1d_array_t: return "image1d_array_t";
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case DeclSpec::TST_image1d_buffer_t: return "image1d_buffer_t";
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case DeclSpec::TST_image2d_t: return "image2d_t";
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case DeclSpec::TST_image2d_array_t: return "image2d_array_t";
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case DeclSpec::TST_image3d_t: return "image3d_t";
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case DeclSpec::TST_event_t: return "event_t";
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case DeclSpec::TST_error: return "(error)";
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}
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llvm_unreachable("Unknown typespec!");
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}
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const char *DeclSpec::getSpecifierName(TQ T) {
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switch (T) {
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case DeclSpec::TQ_unspecified: return "unspecified";
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case DeclSpec::TQ_const: return "const";
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case DeclSpec::TQ_restrict: return "restrict";
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case DeclSpec::TQ_volatile: return "volatile";
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}
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llvm_unreachable("Unknown typespec!");
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}
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bool DeclSpec::SetStorageClassSpec(Sema &S, SCS SC, SourceLocation Loc,
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const char *&PrevSpec,
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unsigned &DiagID) {
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// OpenCL v1.1 s6.8g: "The extern, static, auto and register storage-class
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// specifiers are not supported.
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// It seems sensible to prohibit private_extern too
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// The cl_clang_storage_class_specifiers extension enables support for
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// these storage-class specifiers.
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// OpenCL v1.2 s6.8 changes this to "The auto and register storage-class
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// specifiers are not supported."
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if (S.getLangOpts().OpenCL &&
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!S.getOpenCLOptions().cl_clang_storage_class_specifiers) {
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switch (SC) {
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case SCS_extern:
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case SCS_private_extern:
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case SCS_static:
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if (S.getLangOpts().OpenCLVersion < 120) {
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DiagID = diag::err_not_opencl_storage_class_specifier;
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PrevSpec = getSpecifierName(SC);
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return true;
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}
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break;
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case SCS_auto:
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case SCS_register:
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DiagID = diag::err_not_opencl_storage_class_specifier;
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PrevSpec = getSpecifierName(SC);
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return true;
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default:
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break;
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}
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}
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if (StorageClassSpec != SCS_unspecified) {
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// Maybe this is an attempt to use C++0x 'auto' outside of C++0x mode.
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bool isInvalid = true;
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if (TypeSpecType == TST_unspecified && S.getLangOpts().CPlusPlus) {
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if (SC == SCS_auto)
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return SetTypeSpecType(TST_auto, Loc, PrevSpec, DiagID);
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if (StorageClassSpec == SCS_auto) {
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isInvalid = SetTypeSpecType(TST_auto, StorageClassSpecLoc,
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PrevSpec, DiagID);
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|
assert(!isInvalid && "auto SCS -> TST recovery failed");
|
|
}
|
|
}
|
|
|
|
// Changing storage class is allowed only if the previous one
|
|
// was the 'extern' that is part of a linkage specification and
|
|
// the new storage class is 'typedef'.
|
|
if (isInvalid &&
|
|
!(SCS_extern_in_linkage_spec &&
|
|
StorageClassSpec == SCS_extern &&
|
|
SC == SCS_typedef))
|
|
return BadSpecifier(SC, (SCS)StorageClassSpec, PrevSpec, DiagID);
|
|
}
|
|
StorageClassSpec = SC;
|
|
StorageClassSpecLoc = Loc;
|
|
assert((unsigned)SC == StorageClassSpec && "SCS constants overflow bitfield");
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetStorageClassSpecThread(SourceLocation Loc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID) {
|
|
if (SCS_thread_specified) {
|
|
PrevSpec = "__thread";
|
|
DiagID = diag::ext_duplicate_declspec;
|
|
return true;
|
|
}
|
|
SCS_thread_specified = true;
|
|
SCS_threadLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
/// These methods set the specified attribute of the DeclSpec, but return true
|
|
/// and ignore the request if invalid (e.g. "extern" then "auto" is
|
|
/// specified).
|
|
bool DeclSpec::SetTypeSpecWidth(TSW W, SourceLocation Loc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID) {
|
|
// Overwrite TSWLoc only if TypeSpecWidth was unspecified, so that
|
|
// for 'long long' we will keep the source location of the first 'long'.
|
|
if (TypeSpecWidth == TSW_unspecified)
|
|
TSWLoc = Loc;
|
|
// Allow turning long -> long long.
|
|
else if (W != TSW_longlong || TypeSpecWidth != TSW_long)
|
|
return BadSpecifier(W, (TSW)TypeSpecWidth, PrevSpec, DiagID);
|
|
TypeSpecWidth = W;
|
|
if (TypeAltiVecVector && !TypeAltiVecBool &&
|
|
((TypeSpecWidth == TSW_long) || (TypeSpecWidth == TSW_longlong))) {
|
|
PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
|
|
DiagID = diag::warn_vector_long_decl_spec_combination;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeSpecComplex(TSC C, SourceLocation Loc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID) {
|
|
if (TypeSpecComplex != TSC_unspecified)
|
|
return BadSpecifier(C, (TSC)TypeSpecComplex, PrevSpec, DiagID);
|
|
TypeSpecComplex = C;
|
|
TSCLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeSpecSign(TSS S, SourceLocation Loc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID) {
|
|
if (TypeSpecSign != TSS_unspecified)
|
|
return BadSpecifier(S, (TSS)TypeSpecSign, PrevSpec, DiagID);
|
|
TypeSpecSign = S;
|
|
TSSLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID,
|
|
ParsedType Rep) {
|
|
return SetTypeSpecType(T, Loc, Loc, PrevSpec, DiagID, Rep);
|
|
}
|
|
|
|
bool DeclSpec::SetTypeSpecType(TST T, SourceLocation TagKwLoc,
|
|
SourceLocation TagNameLoc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID,
|
|
ParsedType Rep) {
|
|
assert(isTypeRep(T) && "T does not store a type");
|
|
assert(Rep && "no type provided!");
|
|
if (TypeSpecType != TST_unspecified) {
|
|
PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
|
|
DiagID = diag::err_invalid_decl_spec_combination;
|
|
return true;
|
|
}
|
|
TypeSpecType = T;
|
|
TypeRep = Rep;
|
|
TSTLoc = TagKwLoc;
|
|
TSTNameLoc = TagNameLoc;
|
|
TypeSpecOwned = false;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID,
|
|
Expr *Rep) {
|
|
assert(isExprRep(T) && "T does not store an expr");
|
|
assert(Rep && "no expression provided!");
|
|
if (TypeSpecType != TST_unspecified) {
|
|
PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
|
|
DiagID = diag::err_invalid_decl_spec_combination;
|
|
return true;
|
|
}
|
|
TypeSpecType = T;
|
|
ExprRep = Rep;
|
|
TSTLoc = Loc;
|
|
TSTNameLoc = Loc;
|
|
TypeSpecOwned = false;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID,
|
|
Decl *Rep, bool Owned) {
|
|
return SetTypeSpecType(T, Loc, Loc, PrevSpec, DiagID, Rep, Owned);
|
|
}
|
|
|
|
bool DeclSpec::SetTypeSpecType(TST T, SourceLocation TagKwLoc,
|
|
SourceLocation TagNameLoc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID,
|
|
Decl *Rep, bool Owned) {
|
|
assert(isDeclRep(T) && "T does not store a decl");
|
|
// Unlike the other cases, we don't assert that we actually get a decl.
|
|
|
|
if (TypeSpecType != TST_unspecified) {
|
|
PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
|
|
DiagID = diag::err_invalid_decl_spec_combination;
|
|
return true;
|
|
}
|
|
TypeSpecType = T;
|
|
DeclRep = Rep;
|
|
TSTLoc = TagKwLoc;
|
|
TSTNameLoc = TagNameLoc;
|
|
TypeSpecOwned = Owned;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeSpecType(TST T, SourceLocation Loc,
|
|
const char *&PrevSpec,
|
|
unsigned &DiagID) {
|
|
assert(!isDeclRep(T) && !isTypeRep(T) && !isExprRep(T) &&
|
|
"rep required for these type-spec kinds!");
|
|
if (TypeSpecType != TST_unspecified) {
|
|
PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
|
|
DiagID = diag::err_invalid_decl_spec_combination;
|
|
return true;
|
|
}
|
|
TSTLoc = Loc;
|
|
TSTNameLoc = Loc;
|
|
if (TypeAltiVecVector && (T == TST_bool) && !TypeAltiVecBool) {
|
|
TypeAltiVecBool = true;
|
|
return false;
|
|
}
|
|
TypeSpecType = T;
|
|
TypeSpecOwned = false;
|
|
if (TypeAltiVecVector && !TypeAltiVecBool && (TypeSpecType == TST_double)) {
|
|
PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
|
|
DiagID = diag::err_invalid_vector_decl_spec;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeAltiVecVector(bool isAltiVecVector, SourceLocation Loc,
|
|
const char *&PrevSpec, unsigned &DiagID) {
|
|
if (TypeSpecType != TST_unspecified) {
|
|
PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
|
|
DiagID = diag::err_invalid_vector_decl_spec_combination;
|
|
return true;
|
|
}
|
|
TypeAltiVecVector = isAltiVecVector;
|
|
AltiVecLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeAltiVecPixel(bool isAltiVecPixel, SourceLocation Loc,
|
|
const char *&PrevSpec, unsigned &DiagID) {
|
|
if (!TypeAltiVecVector || TypeAltiVecPixel ||
|
|
(TypeSpecType != TST_unspecified)) {
|
|
PrevSpec = DeclSpec::getSpecifierName((TST) TypeSpecType);
|
|
DiagID = diag::err_invalid_pixel_decl_spec_combination;
|
|
return true;
|
|
}
|
|
TypeAltiVecPixel = isAltiVecPixel;
|
|
TSTLoc = Loc;
|
|
TSTNameLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeSpecError() {
|
|
TypeSpecType = TST_error;
|
|
TypeSpecOwned = false;
|
|
TSTLoc = SourceLocation();
|
|
TSTNameLoc = SourceLocation();
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec,
|
|
unsigned &DiagID, const LangOptions &Lang) {
|
|
// Duplicates are permitted in C99, but are not permitted in C++. However,
|
|
// since this is likely not what the user intended, we will always warn. We
|
|
// do not need to set the qualifier's location since we already have it.
|
|
if (TypeQualifiers & T) {
|
|
bool IsExtension = true;
|
|
if (Lang.C99)
|
|
IsExtension = false;
|
|
return BadSpecifier(T, T, PrevSpec, DiagID, IsExtension);
|
|
}
|
|
TypeQualifiers |= T;
|
|
|
|
switch (T) {
|
|
default: llvm_unreachable("Unknown type qualifier!");
|
|
case TQ_const: TQ_constLoc = Loc; break;
|
|
case TQ_restrict: TQ_restrictLoc = Loc; break;
|
|
case TQ_volatile: TQ_volatileLoc = Loc; break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::setFunctionSpecInline(SourceLocation Loc) {
|
|
// 'inline inline' is ok.
|
|
FS_inline_specified = true;
|
|
FS_inlineLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::setFunctionSpecVirtual(SourceLocation Loc) {
|
|
// 'virtual virtual' is ok.
|
|
FS_virtual_specified = true;
|
|
FS_virtualLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::setFunctionSpecExplicit(SourceLocation Loc) {
|
|
// 'explicit explicit' is ok.
|
|
FS_explicit_specified = true;
|
|
FS_explicitLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::setFunctionSpecNoreturn(SourceLocation Loc) {
|
|
// '_Noreturn _Noreturn' is ok.
|
|
FS_noreturn_specified = true;
|
|
FS_noreturnLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetFriendSpec(SourceLocation Loc, const char *&PrevSpec,
|
|
unsigned &DiagID) {
|
|
if (Friend_specified) {
|
|
PrevSpec = "friend";
|
|
DiagID = diag::ext_duplicate_declspec;
|
|
return true;
|
|
}
|
|
|
|
Friend_specified = true;
|
|
FriendLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::setModulePrivateSpec(SourceLocation Loc, const char *&PrevSpec,
|
|
unsigned &DiagID) {
|
|
if (isModulePrivateSpecified()) {
|
|
PrevSpec = "__module_private__";
|
|
DiagID = diag::ext_duplicate_declspec;
|
|
return true;
|
|
}
|
|
|
|
ModulePrivateLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
bool DeclSpec::SetConstexprSpec(SourceLocation Loc, const char *&PrevSpec,
|
|
unsigned &DiagID) {
|
|
// 'constexpr constexpr' is ok.
|
|
Constexpr_specified = true;
|
|
ConstexprLoc = Loc;
|
|
return false;
|
|
}
|
|
|
|
void DeclSpec::setProtocolQualifiers(Decl * const *Protos,
|
|
unsigned NP,
|
|
SourceLocation *ProtoLocs,
|
|
SourceLocation LAngleLoc) {
|
|
if (NP == 0) return;
|
|
Decl **ProtoQuals = new Decl*[NP];
|
|
memcpy(ProtoQuals, Protos, sizeof(Decl*)*NP);
|
|
ProtocolQualifiers = ProtoQuals;
|
|
ProtocolLocs = new SourceLocation[NP];
|
|
memcpy(ProtocolLocs, ProtoLocs, sizeof(SourceLocation)*NP);
|
|
NumProtocolQualifiers = NP;
|
|
ProtocolLAngleLoc = LAngleLoc;
|
|
}
|
|
|
|
void DeclSpec::SaveWrittenBuiltinSpecs() {
|
|
writtenBS.Sign = getTypeSpecSign();
|
|
writtenBS.Width = getTypeSpecWidth();
|
|
writtenBS.Type = getTypeSpecType();
|
|
// Search the list of attributes for the presence of a mode attribute.
|
|
writtenBS.ModeAttr = false;
|
|
AttributeList* attrs = getAttributes().getList();
|
|
while (attrs) {
|
|
if (attrs->getKind() == AttributeList::AT_Mode) {
|
|
writtenBS.ModeAttr = true;
|
|
break;
|
|
}
|
|
attrs = attrs->getNext();
|
|
}
|
|
}
|
|
|
|
void DeclSpec::SaveStorageSpecifierAsWritten() {
|
|
if (SCS_extern_in_linkage_spec && StorageClassSpec == SCS_extern)
|
|
// If 'extern' is part of a linkage specification,
|
|
// then it is not a storage class "as written".
|
|
StorageClassSpecAsWritten = SCS_unspecified;
|
|
else
|
|
StorageClassSpecAsWritten = StorageClassSpec;
|
|
}
|
|
|
|
/// Finish - This does final analysis of the declspec, rejecting things like
|
|
/// "_Imaginary" (lacking an FP type). This returns a diagnostic to issue or
|
|
/// diag::NUM_DIAGNOSTICS if there is no error. After calling this method,
|
|
/// DeclSpec is guaranteed self-consistent, even if an error occurred.
|
|
void DeclSpec::Finish(DiagnosticsEngine &D, Preprocessor &PP) {
|
|
// Before possibly changing their values, save specs as written.
|
|
SaveWrittenBuiltinSpecs();
|
|
SaveStorageSpecifierAsWritten();
|
|
|
|
// Check the type specifier components first.
|
|
|
|
// Validate and finalize AltiVec vector declspec.
|
|
if (TypeAltiVecVector) {
|
|
if (TypeAltiVecBool) {
|
|
// Sign specifiers are not allowed with vector bool. (PIM 2.1)
|
|
if (TypeSpecSign != TSS_unspecified) {
|
|
Diag(D, TSSLoc, diag::err_invalid_vector_bool_decl_spec)
|
|
<< getSpecifierName((TSS)TypeSpecSign);
|
|
}
|
|
|
|
// Only char/int are valid with vector bool. (PIM 2.1)
|
|
if (((TypeSpecType != TST_unspecified) && (TypeSpecType != TST_char) &&
|
|
(TypeSpecType != TST_int)) || TypeAltiVecPixel) {
|
|
Diag(D, TSTLoc, diag::err_invalid_vector_bool_decl_spec)
|
|
<< (TypeAltiVecPixel ? "__pixel" :
|
|
getSpecifierName((TST)TypeSpecType));
|
|
}
|
|
|
|
// Only 'short' is valid with vector bool. (PIM 2.1)
|
|
if ((TypeSpecWidth != TSW_unspecified) && (TypeSpecWidth != TSW_short))
|
|
Diag(D, TSWLoc, diag::err_invalid_vector_bool_decl_spec)
|
|
<< getSpecifierName((TSW)TypeSpecWidth);
|
|
|
|
// Elements of vector bool are interpreted as unsigned. (PIM 2.1)
|
|
if ((TypeSpecType == TST_char) || (TypeSpecType == TST_int) ||
|
|
(TypeSpecWidth != TSW_unspecified))
|
|
TypeSpecSign = TSS_unsigned;
|
|
}
|
|
|
|
if (TypeAltiVecPixel) {
|
|
//TODO: perform validation
|
|
TypeSpecType = TST_int;
|
|
TypeSpecSign = TSS_unsigned;
|
|
TypeSpecWidth = TSW_short;
|
|
TypeSpecOwned = false;
|
|
}
|
|
}
|
|
|
|
// signed/unsigned are only valid with int/char/wchar_t.
|
|
if (TypeSpecSign != TSS_unspecified) {
|
|
if (TypeSpecType == TST_unspecified)
|
|
TypeSpecType = TST_int; // unsigned -> unsigned int, signed -> signed int.
|
|
else if (TypeSpecType != TST_int && TypeSpecType != TST_int128 &&
|
|
TypeSpecType != TST_char && TypeSpecType != TST_wchar) {
|
|
Diag(D, TSSLoc, diag::err_invalid_sign_spec)
|
|
<< getSpecifierName((TST)TypeSpecType);
|
|
// signed double -> double.
|
|
TypeSpecSign = TSS_unspecified;
|
|
}
|
|
}
|
|
|
|
// Validate the width of the type.
|
|
switch (TypeSpecWidth) {
|
|
case TSW_unspecified: break;
|
|
case TSW_short: // short int
|
|
case TSW_longlong: // long long int
|
|
if (TypeSpecType == TST_unspecified)
|
|
TypeSpecType = TST_int; // short -> short int, long long -> long long int.
|
|
else if (TypeSpecType != TST_int) {
|
|
Diag(D, TSWLoc,
|
|
TypeSpecWidth == TSW_short ? diag::err_invalid_short_spec
|
|
: diag::err_invalid_longlong_spec)
|
|
<< getSpecifierName((TST)TypeSpecType);
|
|
TypeSpecType = TST_int;
|
|
TypeSpecOwned = false;
|
|
}
|
|
break;
|
|
case TSW_long: // long double, long int
|
|
if (TypeSpecType == TST_unspecified)
|
|
TypeSpecType = TST_int; // long -> long int.
|
|
else if (TypeSpecType != TST_int && TypeSpecType != TST_double) {
|
|
Diag(D, TSWLoc, diag::err_invalid_long_spec)
|
|
<< getSpecifierName((TST)TypeSpecType);
|
|
TypeSpecType = TST_int;
|
|
TypeSpecOwned = false;
|
|
}
|
|
break;
|
|
}
|
|
|
|
// TODO: if the implementation does not implement _Complex or _Imaginary,
|
|
// disallow their use. Need information about the backend.
|
|
if (TypeSpecComplex != TSC_unspecified) {
|
|
if (TypeSpecType == TST_unspecified) {
|
|
Diag(D, TSCLoc, diag::ext_plain_complex)
|
|
<< FixItHint::CreateInsertion(
|
|
PP.getLocForEndOfToken(getTypeSpecComplexLoc()),
|
|
" double");
|
|
TypeSpecType = TST_double; // _Complex -> _Complex double.
|
|
} else if (TypeSpecType == TST_int || TypeSpecType == TST_char) {
|
|
// Note that this intentionally doesn't include _Complex _Bool.
|
|
if (!PP.getLangOpts().CPlusPlus)
|
|
Diag(D, TSTLoc, diag::ext_integer_complex);
|
|
} else if (TypeSpecType != TST_float && TypeSpecType != TST_double) {
|
|
Diag(D, TSCLoc, diag::err_invalid_complex_spec)
|
|
<< getSpecifierName((TST)TypeSpecType);
|
|
TypeSpecComplex = TSC_unspecified;
|
|
}
|
|
}
|
|
|
|
// If no type specifier was provided and we're parsing a language where
|
|
// the type specifier is not optional, but we got 'auto' as a storage
|
|
// class specifier, then assume this is an attempt to use C++0x's 'auto'
|
|
// type specifier.
|
|
// FIXME: Does Microsoft really support implicit int in C++?
|
|
if (PP.getLangOpts().CPlusPlus && !PP.getLangOpts().MicrosoftExt &&
|
|
TypeSpecType == TST_unspecified && StorageClassSpec == SCS_auto) {
|
|
TypeSpecType = TST_auto;
|
|
StorageClassSpec = StorageClassSpecAsWritten = SCS_unspecified;
|
|
TSTLoc = TSTNameLoc = StorageClassSpecLoc;
|
|
StorageClassSpecLoc = SourceLocation();
|
|
}
|
|
// Diagnose if we've recovered from an ill-formed 'auto' storage class
|
|
// specifier in a pre-C++0x dialect of C++.
|
|
if (!PP.getLangOpts().CPlusPlus11 && TypeSpecType == TST_auto)
|
|
Diag(D, TSTLoc, diag::ext_auto_type_specifier);
|
|
if (PP.getLangOpts().CPlusPlus && !PP.getLangOpts().CPlusPlus11 &&
|
|
StorageClassSpec == SCS_auto)
|
|
Diag(D, StorageClassSpecLoc, diag::warn_auto_storage_class)
|
|
<< FixItHint::CreateRemoval(StorageClassSpecLoc);
|
|
if (TypeSpecType == TST_char16 || TypeSpecType == TST_char32)
|
|
Diag(D, TSTLoc, diag::warn_cxx98_compat_unicode_type)
|
|
<< (TypeSpecType == TST_char16 ? "char16_t" : "char32_t");
|
|
if (Constexpr_specified)
|
|
Diag(D, ConstexprLoc, diag::warn_cxx98_compat_constexpr);
|
|
|
|
// C++ [class.friend]p6:
|
|
// No storage-class-specifier shall appear in the decl-specifier-seq
|
|
// of a friend declaration.
|
|
if (isFriendSpecified() && getStorageClassSpec()) {
|
|
DeclSpec::SCS SC = getStorageClassSpec();
|
|
const char *SpecName = getSpecifierName(SC);
|
|
|
|
SourceLocation SCLoc = getStorageClassSpecLoc();
|
|
SourceLocation SCEndLoc = SCLoc.getLocWithOffset(strlen(SpecName));
|
|
|
|
Diag(D, SCLoc, diag::err_friend_storage_spec)
|
|
<< SpecName
|
|
<< FixItHint::CreateRemoval(SourceRange(SCLoc, SCEndLoc));
|
|
|
|
ClearStorageClassSpecs();
|
|
}
|
|
|
|
assert(!TypeSpecOwned || isDeclRep((TST) TypeSpecType));
|
|
|
|
// Okay, now we can infer the real type.
|
|
|
|
// TODO: return "auto function" and other bad things based on the real type.
|
|
|
|
// 'data definition has no type or storage class'?
|
|
}
|
|
|
|
bool DeclSpec::isMissingDeclaratorOk() {
|
|
TST tst = getTypeSpecType();
|
|
return isDeclRep(tst) && getRepAsDecl() != 0 &&
|
|
StorageClassSpec != DeclSpec::SCS_typedef;
|
|
}
|
|
|
|
void UnqualifiedId::setOperatorFunctionId(SourceLocation OperatorLoc,
|
|
OverloadedOperatorKind Op,
|
|
SourceLocation SymbolLocations[3]) {
|
|
Kind = IK_OperatorFunctionId;
|
|
StartLocation = OperatorLoc;
|
|
EndLocation = OperatorLoc;
|
|
OperatorFunctionId.Operator = Op;
|
|
for (unsigned I = 0; I != 3; ++I) {
|
|
OperatorFunctionId.SymbolLocations[I] = SymbolLocations[I].getRawEncoding();
|
|
|
|
if (SymbolLocations[I].isValid())
|
|
EndLocation = SymbolLocations[I];
|
|
}
|
|
}
|
|
|
|
bool VirtSpecifiers::SetSpecifier(Specifier VS, SourceLocation Loc,
|
|
const char *&PrevSpec) {
|
|
LastLocation = Loc;
|
|
|
|
if (Specifiers & VS) {
|
|
PrevSpec = getSpecifierName(VS);
|
|
return true;
|
|
}
|
|
|
|
Specifiers |= VS;
|
|
|
|
switch (VS) {
|
|
default: llvm_unreachable("Unknown specifier!");
|
|
case VS_Override: VS_overrideLoc = Loc; break;
|
|
case VS_Final: VS_finalLoc = Loc; break;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
const char *VirtSpecifiers::getSpecifierName(Specifier VS) {
|
|
switch (VS) {
|
|
default: llvm_unreachable("Unknown specifier");
|
|
case VS_Override: return "override";
|
|
case VS_Final: return "final";
|
|
}
|
|
}
|