diff options
Diffstat (limited to 'lib/Sema')
| -rw-r--r-- | lib/Sema/Sema.h | 2 | ||||
| -rw-r--r-- | lib/Sema/SemaDecl.cpp | 23 |
2 files changed, 25 insertions, 0 deletions
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h index e8eb960a3f..f48e75afb3 100644 --- a/lib/Sema/Sema.h +++ b/lib/Sema/Sema.h @@ -332,6 +332,8 @@ public: virtual TypeTy *getTypeName(IdentifierInfo &II, SourceLocation NameLoc, Scope *S, const CXXScopeSpec *SS); + virtual DeclSpec::TST isTagName(IdentifierInfo &II, Scope *S); + virtual DeclPtrTy ActOnDeclarator(Scope *S, Declarator &D) { return ActOnDeclarator(S, D, false); } diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp index 603b8b31a2..8ce624b788 100644 --- a/lib/Sema/SemaDecl.cpp +++ b/lib/Sema/SemaDecl.cpp @@ -139,6 +139,29 @@ Sema::TypeTy *Sema::getTypeName(IdentifierInfo &II, SourceLocation NameLoc, return 0; } +/// isTagName() - This method is called *for error recovery purposes only* +/// to determine if the specified name is a valid tag name ("struct foo"). If +/// so, this returns the TST for the tag corresponding to it (TST_enum, +/// TST_union, TST_struct, TST_class). This is used to diagnose cases in C +/// where the user forgot to specify the tag. +DeclSpec::TST Sema::isTagName(IdentifierInfo &II, Scope *S) { + // Do a tag name lookup in this scope. + LookupResult R = LookupName(S, &II, LookupTagName, false, false); + if (R.getKind() == LookupResult::Found) + if (const TagDecl *TD = dyn_cast<TagDecl>(R.getAsDecl())) { + switch (TD->getTagKind()) { + case TagDecl::TK_struct: return DeclSpec::TST_struct; + case TagDecl::TK_union: return DeclSpec::TST_union; + case TagDecl::TK_class: return DeclSpec::TST_class; + case TagDecl::TK_enum: return DeclSpec::TST_enum; + } + } + + return DeclSpec::TST_unspecified; +} + + + DeclContext *Sema::getContainingDC(DeclContext *DC) { if (CXXMethodDecl *MD = dyn_cast<CXXMethodDecl>(DC)) { // A C++ out-of-line method will return to the file declaration context. |