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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef TOOLS_GN_VALUE_EXTRACTORS_H_
#define TOOLS_GN_VALUE_EXTRACTORS_H_
#include <string>
#include <vector>
#include "tools/gn/target.h"
#include "tools/gn/value.h"
class BuildSettings;
class Err;
class Label;
class SourceDir;
class SourceFile;
// Sets the error and returns false on failure.
template<typename T, class Converter>
bool ListValueExtractor(const Value& value, std::vector<T>* dest,
Err* err,
const Converter& converter) {
if (!value.VerifyTypeIs(Value::LIST, err))
return false;
const std::vector<Value>& input_list = value.list_value();
dest->resize(input_list.size());
for (size_t i = 0; i < input_list.size(); i++) {
if (!converter(input_list[i], &(*dest)[i], err))
return false;
}
return true;
}
// On failure, returns false and sets the error.
bool ExtractListOfStringValues(const Value& value,
std::vector<std::string>* dest,
Err* err);
// Looks for a list of source files relative to a given current dir.
bool ExtractListOfRelativeFiles(const BuildSettings* build_settings,
const Value& value,
const SourceDir& current_dir,
std::vector<SourceFile>* files,
Err* err);
// Looks for a list of source directories relative to a given current dir.
bool ExtractListOfRelativeDirs(const BuildSettings* build_settings,
const Value& value,
const SourceDir& current_dir,
std::vector<SourceDir>* dest,
Err* err);
// Extracts the list of labels and their origins to the given vector. Only the
// labels are filled in, the ptr for each pair in the vector will be null.
bool ExtractListOfLabels(const Value& value,
const SourceDir& current_dir,
const Label& current_toolchain,
LabelConfigVector* dest,
Err* err);
bool ExtractListOfLabels(const Value& value,
const SourceDir& current_dir,
const Label& current_toolchain,
LabelTargetVector* dest,
Err* err);
bool ExtractRelativeFile(const BuildSettings* build_settings,
const Value& value,
const SourceDir& current_dir,
SourceFile* file,
Err* err);
#endif // TOOLS_GN_VALUE_EXTRACTORS_H_
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