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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "EditTracker.h"
#include <assert.h>
#include <stdio.h>
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
namespace {
const char* GetTag(RenameCategory category) {
switch (category) {
case RenameCategory::kEnumValue:
return "enum";
case RenameCategory::kField:
return "var";
case RenameCategory::kFunction:
return "func";
case RenameCategory::kUnresolved:
return "unresolved";
case RenameCategory::kVariable:
return "var";
}
}
} // namespace
EditTracker::EditTracker(RenameCategory category) : category_(category) {}
void EditTracker::Add(const clang::SourceManager& source_manager,
clang::SourceLocation location,
llvm::StringRef original_text,
llvm::StringRef new_text) {
llvm::StringRef filename;
for (int i = 0; i < 10; i++) {
filename = source_manager.getFilename(location);
if (!filename.empty() || !location.isMacroID())
break;
// Otherwise, no filename and the SourceLocation is a macro ID. Look one
// level up the stack...
location = source_manager.getImmediateMacroCallerLoc(location);
}
assert(!filename.empty() && "Can't track edit with no filename!");
auto result = tracked_edits_.try_emplace(original_text);
if (result.second) {
result.first->getValue().new_text = new_text;
}
result.first->getValue().filenames.try_emplace(filename);
}
void EditTracker::SerializeTo(llvm::raw_ostream& output) const {
const char* tag = GetTag(category_);
for (const auto& edit : tracked_edits_) {
for (const auto& filename : edit.getValue().filenames) {
output << filename.getKey() << ":" << tag << ":" << edit.getKey() << ":"
<< edit.getValue().new_text << "\n";
}
}
}
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