71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
|
//===--- Transformer.cpp - Transformer library implementation ---*- C++ -*-===//
|
||
|
|
//
|
||
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
||
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
#include "clang/Tooling/Transformer/Transformer.h"
|
||
|
|
#include "clang/ASTMatchers/ASTMatchFinder.h"
|
||
|
|
#include "clang/ASTMatchers/ASTMatchersInternal.h"
|
||
|
|
#include "clang/Basic/SourceLocation.h"
|
||
|
|
#include "clang/Tooling/Refactoring/AtomicChange.h"
|
||
|
|
#include "llvm/Support/Error.h"
|
||
|
|
#include <map>
|
||
|
|
#include <utility>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
using namespace clang;
|
||
|
|
using namespace tooling;
|
||
|
|
|
||
|
|
using ast_matchers::MatchFinder;
|
||
|
|
|
||
|
|
void Transformer::registerMatchers(MatchFinder *MatchFinder) {
|
||
|
|
for (auto &Matcher : transformer::detail::buildMatchers(Rule))
|
||
|
|
MatchFinder->addDynamicMatcher(Matcher, this);
|
||
|
|
}
|
||
|
|
|
||
|
|
void Transformer::run(const MatchFinder::MatchResult &Result) {
|
||
|
|
if (Result.Context->getDiagnostics().hasErrorOccurred())
|
||
|
|
return;
|
||
|
|
|
||
|
|
transformer::RewriteRule::Case Case =
|
||
|
|
transformer::detail::findSelectedCase(Result, Rule);
|
||
|
|
auto Transformations = Case.Edits(Result);
|
||
|
|
if (!Transformations) {
|
||
|
|
Consumer(Transformations.takeError());
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Transformations->empty())
|
||
|
|
return;
|
||
|
|
|
||
|
|
// Group the transformations, by file, into AtomicChanges, each anchored by
|
||
|
|
// the location of the first change in that file.
|
||
|
|
std::map<FileID, AtomicChange> ChangesByFileID;
|
||
|
|
for (const auto &T : *Transformations) {
|
||
|
|
auto ID = Result.SourceManager->getFileID(T.Range.getBegin());
|
||
|
|
auto Iter = ChangesByFileID
|
||
|
|
.emplace(ID, AtomicChange(*Result.SourceManager,
|
||
|
|
T.Range.getBegin(), T.Metadata))
|
||
|
|
.first;
|
||
|
|
auto &AC = Iter->second;
|
||
|
|
switch (T.Kind) {
|
||
|
|
case transformer::EditKind::Range:
|
||
|
|
if (auto Err =
|
||
|
|
AC.replace(*Result.SourceManager, T.Range, T.Replacement)) {
|
||
|
|
Consumer(std::move(Err));
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case transformer::EditKind::AddInclude:
|
||
|
|
AC.addHeader(T.Replacement);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for (auto &IDChangePair : ChangesByFileID)
|
||
|
|
Consumer(std::move(IDChangePair.second));
|
||
|
|
}
|