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Introduce FunctionDecl::getFirstDeclaration() and VarDecl::getFirstDeclaration(). 

For multiple redeclarations they return the first one.

llvm-svn: 75602
This commit is contained in:
Argyrios Kyrtzidis 2009-07-14 03:19:57 +00:00
parent d49e8dd759
commit ef17c07bf6
2 changed files with 26 additions and 10 deletions
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8
clang/include/clang/AST/Decl.h
View File

@ -413,6 +413,10 @@ public:
PreviousDeclaration = PrevDecl;
}
/// \brief For multiple redeclarations returns the first one, otherwise
/// returns itself.
const VarDecl *getFirstDeclaration() const;
virtual Decl *getPrimaryDecl() const;
/// hasLocalStorage - Returns true if a variable with function scope
@ -811,6 +815,10 @@ public:
return PreviousDeclaration;
}
/// \brief For multiple redeclarations returns the first one, otherwise
/// returns itself.
const FunctionDecl *getFirstDeclaration() const;
void setPreviousDeclaration(FunctionDecl * PrevDecl);
virtual Decl *getPrimaryDecl() const;

28
clang/lib/AST/Decl.cpp
View File

@ -358,12 +358,16 @@ const Expr *VarDecl::getDefinition(const VarDecl *&Def) const {
return Def? Def->getInit() : 0;
}
Decl *VarDecl::getPrimaryDecl() const {
const VarDecl *Prim = this;
while (Prim->getPreviousDeclaration())
Prim = Prim->getPreviousDeclaration();
const VarDecl *VarDecl::getFirstDeclaration() const {
const VarDecl *First = this;
while (First->getPreviousDeclaration())
First = First->getPreviousDeclaration();
return const_cast<VarDecl *>(Prim);
return First;
}
Decl *VarDecl::getPrimaryDecl() const {
return const_cast<VarDecl *>(getFirstDeclaration());
}
//===----------------------------------------------------------------------===//
@ -577,12 +581,16 @@ FunctionDecl::setPreviousDeclaration(FunctionDecl *PrevDecl) {
}
}
Decl *FunctionDecl::getPrimaryDecl() const {
const FunctionDecl *Prim = this;
while (Prim->getPreviousDeclaration())
Prim = Prim->getPreviousDeclaration();
const FunctionDecl *FunctionDecl::getFirstDeclaration() const {
const FunctionDecl *First = this;
while (First->getPreviousDeclaration())
First = First->getPreviousDeclaration();
return const_cast<FunctionDecl *>(Prim);
return First;
}
Decl *FunctionDecl::getPrimaryDecl() const {
return const_cast<FunctionDecl *>(getFirstDeclaration());
}
/// getOverloadedOperator - Which C++ overloaded operator this