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//===--- FixIt.h - FixIt Hint utilities -------------------------*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// This file implements functions to ease source rewriting from AST-nodes.
// Example swapping A and B expressions:
// Expr *A, *B;
// tooling::fixit::createReplacement(*A, *B);
// tooling::fixit::createReplacement(*B, *A);
#include "clang/AST/ASTContext.h"
namespace clang {
namespace tooling {
namespace fixit {
namespace internal {
StringRef getText(CharSourceRange Range, const ASTContext &Context);
/// Returns the token CharSourceRange corresponding to \p Range.
inline CharSourceRange getSourceRange(const SourceRange &Range) {
return CharSourceRange::getTokenRange(Range);
/// Returns the CharSourceRange of the token at Location \p Loc.
inline CharSourceRange getSourceRange(const SourceLocation &Loc) {
return CharSourceRange::getTokenRange(Loc, Loc);
/// Returns the CharSourceRange of an given Node. \p Node is typically a
/// 'Stmt', 'Expr' or a 'Decl'.
template <typename T> CharSourceRange getSourceRange(const T &Node) {
return CharSourceRange::getTokenRange(Node.getSourceRange());
} // end namespace internal
/// Returns a textual representation of \p Node.
template <typename T>
StringRef getText(const T &Node, const ASTContext &Context) {
return internal::getText(internal::getSourceRange(Node), Context);
// Returns a FixItHint to remove \p Node.
// TODO: Add support for related syntactical elements (i.e. comments, ...).
template <typename T> FixItHint createRemoval(const T &Node) {
return FixItHint::CreateRemoval(internal::getSourceRange(Node));
// Returns a FixItHint to replace \p Destination by \p Source.
template <typename D, typename S>
FixItHint createReplacement(const D &Destination, const S &Source,
const ASTContext &Context) {
return FixItHint::CreateReplacement(internal::getSourceRange(Destination),
getText(Source, Context));
// Returns a FixItHint to replace \p Destination by \p Source.
template <typename D>
FixItHint createReplacement(const D &Destination, StringRef Source) {
return FixItHint::CreateReplacement(internal::getSourceRange(Destination),
} // end namespace fixit
} // end namespace tooling
} // end namespace clang