Revert 214254 "Add initial prototype for the GN meta-buildsystem."

trunk/src/tools/gn/value_extractors.cc

-// 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));
-}