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//===--- USRFinder.h - Clang refactoring library --------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief Methods for determining the USR of a symbol at a location in source
/// code.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_TOOLING_REFACTOR_RENAME_USR_FINDER_H
#define LLVM_CLANG_TOOLING_REFACTOR_RENAME_USR_FINDER_H
#include "clang/AST/AST.h"
#include "clang/AST/ASTContext.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include <string>
#include <vector>
using namespace llvm;
using namespace clang::ast_matchers;
namespace clang {
class ASTContext;
class Decl;
class SourceLocation;
class NamedDecl;
namespace tooling {
// Given an AST context and a point, returns a NamedDecl identifying the symbol
// at the point. Returns null if nothing is found at the point.
const NamedDecl *getNamedDeclAt(const ASTContext &Context,
const SourceLocation Point);
// Given an AST context and a fully qualified name, returns a NamedDecl
// identifying the symbol with a matching name. Returns null if nothing is
// found for the name.
const NamedDecl *getNamedDeclFor(const ASTContext &Context,
const std::string &Name);
// Converts a Decl into a USR.
std::string getUSRForDecl(const Decl *Decl);
// FIXME: Implement RecursiveASTVisitor<T>::VisitNestedNameSpecifier instead.
class NestedNameSpecifierLocFinder : public MatchFinder::MatchCallback {
public:
explicit NestedNameSpecifierLocFinder(ASTContext &Context)
: Context(Context) {}
std::vector<NestedNameSpecifierLoc> getNestedNameSpecifierLocations() {
addMatchers();
Finder.matchAST(Context);
return Locations;
}
private:
void addMatchers() {
const auto NestedNameSpecifierLocMatcher =
nestedNameSpecifierLoc().bind("nestedNameSpecifierLoc");
Finder.addMatcher(NestedNameSpecifierLocMatcher, this);
}
void run(const MatchFinder::MatchResult &Result) override {
const auto *NNS = Result.Nodes.getNodeAs<NestedNameSpecifierLoc>(
"nestedNameSpecifierLoc");
Locations.push_back(*NNS);
}
ASTContext &Context;
std::vector<NestedNameSpecifierLoc> Locations;
MatchFinder Finder;
};
} // end namespace tooling
} // end namespace clang
#endif // LLVM_CLANG_TOOLING_REFACTOR_RENAME_USR_FINDER_H
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