103 lines
3.6 KiB
C++
103 lines
3.6 KiB
C++
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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "tools/gn/value_extractors.h"
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#include "tools/gn/err.h"
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#include "tools/gn/label.h"
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#include "tools/gn/source_dir.h"
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#include "tools/gn/source_file.h"
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namespace {
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// This extractor rejects files with system-absolute file paths. If we need
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// that in the future, we'll have to add some flag to control this.
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struct RelativeFileConverter {
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RelativeFileConverter(const SourceDir& current_dir_in)
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: current_dir(current_dir_in) {}
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bool operator()(const Value& v, SourceFile* out, Err* err) const {
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if (!v.VerifyTypeIs(Value::STRING, err))
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return false;
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*out = current_dir.ResolveRelativeFile(v.string_value());
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if (out->is_system_absolute()) {
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*err = Err(v, "System-absolute file path.",
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"You can't list a system-absolute file path here. Please include "
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"only files in\nthe source tree. Maybe you meant to begin with two "
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"slashes to indicate an\nabsolute path in the source tree?");
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return false;
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}
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return true;
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}
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const SourceDir& current_dir;
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};
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struct RelativeDirConverter {
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RelativeDirConverter(const SourceDir& current_dir_in)
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: current_dir(current_dir_in) {}
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bool operator()(const Value& v, SourceDir* out, Err* err) const {
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if (!v.VerifyTypeIs(Value::STRING, err))
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return false;
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*out = current_dir.ResolveRelativeDir(v.string_value());
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return true;
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}
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const SourceDir& current_dir;
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};
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struct LabelResolver {
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LabelResolver(const SourceDir& current_dir_in,
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const Label& current_toolchain_in)
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: current_dir(current_dir_in),
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current_toolchain(current_toolchain_in) {}
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bool operator()(const Value& v, Label* out, Err* err) const {
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if (!v.VerifyTypeIs(Value::STRING, err))
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return false;
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*out = Label::Resolve(current_dir, current_toolchain, v, err);
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return !err->has_error();
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}
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const SourceDir& current_dir;
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const Label& current_toolchain;
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};
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} // namespace
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bool ExtractListOfStringValues(const Value& value,
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std::vector<std::string>* dest,
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Err* err) {
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if (!value.VerifyTypeIs(Value::LIST, err))
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return false;
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const std::vector<Value>& input_list = value.list_value();
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dest->reserve(input_list.size());
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for (size_t i = 0; i < input_list.size(); i++) {
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if (!input_list[i].VerifyTypeIs(Value::STRING, err))
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return false;
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dest->push_back(input_list[i].string_value());
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}
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return true;
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}
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bool ExtractListOfRelativeFiles(const Value& value,
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const SourceDir& current_dir,
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std::vector<SourceFile>* files,
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Err* err) {
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return ListValueExtractor(value, files, err,
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RelativeFileConverter(current_dir));
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}
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bool ExtractListOfRelativeDirs(const Value& value,
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const SourceDir& current_dir,
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std::vector<SourceDir>* dest,
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Err* err) {
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return ListValueExtractor(value, dest, err,
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RelativeDirConverter(current_dir));
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}
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bool ExtractListOfLabels(const Value& value,
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const SourceDir& current_dir,
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const Label& current_toolchain,
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std::vector<Label>* dest,
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Err* err) {
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return ListValueExtractor(value, dest, err,
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LabelResolver(current_dir, current_toolchain));
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}
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