summaryrefslogtreecommitdiffstats
path: root/contrib/llvm/tools/clang/lib/Sema/IdentifierResolver.h
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/llvm/tools/clang/lib/Sema/IdentifierResolver.h')
-rw-r--r--contrib/llvm/tools/clang/lib/Sema/IdentifierResolver.h203
1 files changed, 0 insertions, 203 deletions
diff --git a/contrib/llvm/tools/clang/lib/Sema/IdentifierResolver.h b/contrib/llvm/tools/clang/lib/Sema/IdentifierResolver.h
deleted file mode 100644
index 59bd834..0000000
--- a/contrib/llvm/tools/clang/lib/Sema/IdentifierResolver.h
+++ /dev/null
@@ -1,203 +0,0 @@
-//===- IdentifierResolver.h - Lexical Scope Name lookup ---------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the IdentifierResolver class, which is used for lexical
-// scoped lookup, based on declaration names.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_AST_SEMA_IDENTIFIERRESOLVER_H
-#define LLVM_CLANG_AST_SEMA_IDENTIFIERRESOLVER_H
-
-#include "clang/Basic/IdentifierTable.h"
-#include "clang/Parse/Scope.h"
-#include "clang/AST/Decl.h"
-#include "clang/AST/DeclarationName.h"
-#include "clang/AST/DeclCXX.h"
-
-namespace clang {
-
-/// IdentifierResolver - Keeps track of shadowed decls on enclosing
-/// scopes. It manages the shadowing chains of declaration names and
-/// implements efficent decl lookup based on a declaration name.
-class IdentifierResolver {
-
- /// IdDeclInfo - Keeps track of information about decls associated
- /// to a particular declaration name. IdDeclInfos are lazily
- /// constructed and assigned to a declaration name the first time a
- /// decl with that declaration name is shadowed in some scope.
- class IdDeclInfo {
- public:
- typedef llvm::SmallVector<NamedDecl*, 2> DeclsTy;
-
- inline DeclsTy::iterator decls_begin() { return Decls.begin(); }
- inline DeclsTy::iterator decls_end() { return Decls.end(); }
-
- void AddDecl(NamedDecl *D) { Decls.push_back(D); }
-
- /// RemoveDecl - Remove the decl from the scope chain.
- /// The decl must already be part of the decl chain.
- void RemoveDecl(NamedDecl *D);
-
- /// Replaces the Old declaration with the New declaration. If the
- /// replacement is successful, returns true. If the old
- /// declaration was not found, returns false.
- bool ReplaceDecl(NamedDecl *Old, NamedDecl *New);
-
- private:
- DeclsTy Decls;
- };
-
-public:
-
- /// iterator - Iterate over the decls of a specified declaration name.
- /// It will walk or not the parent declaration contexts depending on how
- /// it was instantiated.
- class iterator {
- public:
- typedef NamedDecl * value_type;
- typedef NamedDecl * reference;
- typedef NamedDecl * pointer;
- typedef std::input_iterator_tag iterator_category;
- typedef std::ptrdiff_t difference_type;
-
- /// Ptr - There are 3 forms that 'Ptr' represents:
- /// 1) A single NamedDecl. (Ptr & 0x1 == 0)
- /// 2) A IdDeclInfo::DeclsTy::iterator that traverses only the decls of the
- /// same declaration context. (Ptr & 0x3 == 0x1)
- /// 3) A IdDeclInfo::DeclsTy::iterator that traverses the decls of parent
- /// declaration contexts too. (Ptr & 0x3 == 0x3)
- uintptr_t Ptr;
- typedef IdDeclInfo::DeclsTy::iterator BaseIter;
-
- /// A single NamedDecl. (Ptr & 0x1 == 0)
- iterator(NamedDecl *D) {
- Ptr = reinterpret_cast<uintptr_t>(D);
- assert((Ptr & 0x1) == 0 && "Invalid Ptr!");
- }
- /// A IdDeclInfo::DeclsTy::iterator that walks or not the parent declaration
- /// contexts depending on 'LookInParentCtx'.
- iterator(BaseIter I) {
- Ptr = reinterpret_cast<uintptr_t>(I) | 0x1;
- }
-
- bool isIterator() const { return (Ptr & 0x1); }
-
- BaseIter getIterator() const {
- assert(isIterator() && "Ptr not an iterator!");
- return reinterpret_cast<BaseIter>(Ptr & ~0x3);
- }
-
- friend class IdentifierResolver;
- public:
- iterator() : Ptr(0) {}
-
- NamedDecl *operator*() const {
- if (isIterator())
- return *getIterator();
- else
- return reinterpret_cast<NamedDecl*>(Ptr);
- }
-
- bool operator==(const iterator &RHS) const {
- return Ptr == RHS.Ptr;
- }
- bool operator!=(const iterator &RHS) const {
- return Ptr != RHS.Ptr;
- }
-
- // Preincrement.
- iterator& operator++() {
- if (!isIterator()) // common case.
- Ptr = 0;
- else {
- NamedDecl *D = **this;
- void *InfoPtr = D->getDeclName().getFETokenInfo<void>();
- assert(!isDeclPtr(InfoPtr) && "Decl with wrong id ?");
- IdDeclInfo *Info = toIdDeclInfo(InfoPtr);
-
- BaseIter I = getIterator();
- if (I != Info->decls_begin())
- *this = iterator(I-1);
- else // No more decls.
- *this = iterator();
- }
- return *this;
- }
-
- uintptr_t getAsOpaqueValue() const { return Ptr; }
-
- static iterator getFromOpaqueValue(uintptr_t P) {
- iterator Result;
- Result.Ptr = P;
- return Result;
- }
- };
-
- /// begin - Returns an iterator for decls with the name 'Name'.
- static iterator begin(DeclarationName Name);
-
- /// end - Returns an iterator that has 'finished'.
- static iterator end() {
- return iterator();
- }
-
- /// isDeclInScope - If 'Ctx' is a function/method, isDeclInScope returns true
- /// if 'D' is in Scope 'S', otherwise 'S' is ignored and isDeclInScope returns
- /// true if 'D' belongs to the given declaration context.
- bool isDeclInScope(Decl *D, DeclContext *Ctx, ASTContext &Context,
- Scope *S = 0) const;
-
- /// AddDecl - Link the decl to its shadowed decl chain.
- void AddDecl(NamedDecl *D);
-
- /// RemoveDecl - Unlink the decl from its shadowed decl chain.
- /// The decl must already be part of the decl chain.
- void RemoveDecl(NamedDecl *D);
-
- /// Replace the decl Old with the new declaration New on its
- /// identifier chain. Returns true if the old declaration was found
- /// (and, therefore, replaced).
- bool ReplaceDecl(NamedDecl *Old, NamedDecl *New);
-
- /// \brief Link the declaration into the chain of declarations for
- /// the given identifier.
- ///
- /// This is a lower-level routine used by the PCH reader to link a
- /// declaration into a specific IdentifierInfo before the
- /// declaration actually has a name.
- void AddDeclToIdentifierChain(IdentifierInfo *II, NamedDecl *D);
-
- explicit IdentifierResolver(const LangOptions &LangOpt);
- ~IdentifierResolver();
-
-private:
- const LangOptions &LangOpt;
-
- class IdDeclInfoMap;
- IdDeclInfoMap *IdDeclInfos;
-
- /// FETokenInfo contains a Decl pointer if lower bit == 0.
- static inline bool isDeclPtr(void *Ptr) {
- return (reinterpret_cast<uintptr_t>(Ptr) & 0x1) == 0;
- }
-
- /// FETokenInfo contains a IdDeclInfo pointer if lower bit == 1.
- static inline IdDeclInfo *toIdDeclInfo(void *Ptr) {
- assert((reinterpret_cast<uintptr_t>(Ptr) & 0x1) == 1
- && "Ptr not a IdDeclInfo* !");
- return reinterpret_cast<IdDeclInfo*>(
- reinterpret_cast<uintptr_t>(Ptr) & ~0x1
- );
- }
-};
-
-} // end namespace clang
-
-#endif
OpenPOWER on IntegriCloud