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