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

trunk/src/tools/gn/ninja_helper.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/ninja_helper.h"
-
-#include "base/logging.h"
-#include "tools/gn/filesystem_utils.h"
-#include "tools/gn/string_utils.h"
-#include "tools/gn/target.h"
-
-namespace {
-
-const char kLibDirWithSlash[] = "lib";
-const char kObjectDirNoSlash[] = "obj";
-
-}  // namespace
-
-NinjaHelper::NinjaHelper(const BuildSettings* build_settings)
-    : build_settings_(build_settings) {
-  build_to_src_no_last_slash_ = build_settings->build_to_source_dir_string();
-  if (!build_to_src_no_last_slash_.empty() &&
-      build_to_src_no_last_slash_[build_to_src_no_last_slash_.size() - 1] ==
-          '/')
-    build_to_src_no_last_slash_.resize(build_to_src_no_last_slash_.size() - 1);
-
-  build_to_src_system_no_last_slash_ = build_to_src_no_last_slash_;
-  ConvertPathToSystem(&build_to_src_system_no_last_slash_);
-}
-
-NinjaHelper::~NinjaHelper() {
-}
-
-std::string NinjaHelper::GetTopleveOutputDir() const {
-  return kObjectDirNoSlash;
-}
-
-std::string NinjaHelper::GetTargetOutputDir(const Target* target) const {
-  return kObjectDirNoSlash + target->label().dir().SourceAbsoluteWithOneSlash();
-}
-
-OutputFile NinjaHelper::GetNinjaFileForTarget(const Target* target) const {
-  OutputFile ret(target->settings()->toolchain_output_subdir());
-  ret.value().append(kObjectDirNoSlash);
-  AppendStringPiece(&ret.value(),
-                    target->label().dir().SourceAbsoluteWithOneSlash());
-  ret.value().append(target->label().name());
-  ret.value().append(".ninja");
-  return ret;
-}
-
-OutputFile NinjaHelper::GetNinjaFileForToolchain(
-    const Settings* settings) const {
-  OutputFile ret;
-  ret.value().append(settings->toolchain_output_subdir().value());
-  ret.value().append("toolchain.ninja");
-  return ret;
-}
-
-// In Python, GypPathToUniqueOutput does the qualification. The only case where
-// the Python version doesn't qualify the name is for target outputs, which we
-// handle in a separate function.
-OutputFile NinjaHelper::GetOutputFileForSource(
-    const Target* target,
-    const SourceFile& source,
-    SourceFileType type) const {
-  // Extract the filename and remove the extension (keep the dot).
-  base::StringPiece filename = FindFilename(&source.value());
-  std::string name(filename.data(), filename.size());
-  size_t extension_offset = FindExtensionOffset(name);
-  CHECK(extension_offset != std::string::npos);
-  name.resize(extension_offset);
-
-  // Append the new extension.
-  switch (type) {
-    case SOURCE_ASM:
-    case SOURCE_C:
-    case SOURCE_CC:
-    case SOURCE_M:
-    case SOURCE_MM:
-      name.append(target->settings()->IsWin() ? "obj" : "o");
-      break;
-
-    case SOURCE_RC:
-      name.append("res");
-      break;
-
-    case SOURCE_H:
-    case SOURCE_UNKNOWN:
-      NOTREACHED();
-      return OutputFile();
-  }
-
-  // Use the scheme <path>/<target>.<name>.<extension> so that all output
-  // names are unique to different targets.
-  OutputFile ret(kObjectDirNoSlash);
-
-  // Find the directory, assume it starts with two slashes, and trim to one.
-  base::StringPiece dir = FindDir(&source.value());
-  CHECK(dir.size() >= 2 && dir[0] == '/' && dir[1] == '/')
-      << "Source file isn't in the source repo: " << dir;
-  AppendStringPiece(&ret.value(), dir.substr(1));
-
-  ret.value().append(target->label().name());
-  ret.value().append(".");
-  ret.value().append(name);
-  return ret;
-}
-
-OutputFile NinjaHelper::GetTargetOutputFile(const Target* target) const {
-  OutputFile ret;
-  if (target->output_type() == Target::NONE) {
-    NOTREACHED();
-    return ret;
-  }
-
-  const char* extension;
-  if (target->output_type() == Target::NONE ||
-      target->output_type() == Target::COPY_FILES ||
-      target->output_type() == Target::CUSTOM) {
-    extension = "stamp";
-  } else {
-    extension = GetExtensionForOutputType(target->output_type(),
-                                          target->settings()->target_os());
-  }
-
-  // Everything goes into the toolchain directory (which will be empty for the
-  // default toolchain, and will end in a slash otherwise).
-  ret.value().append(target->settings()->toolchain_output_subdir().value());
-
-  // Binaries and loadable libraries go into the toolchain root.
-  if (target->output_type() == Target::EXECUTABLE ||
-      target->output_type() == Target::LOADABLE_MODULE ||
-      (target->settings()->IsMac() &&
-          (target->output_type() == Target::SHARED_LIBRARY ||
-           target->output_type() == Target::STATIC_LIBRARY)) ||
-      (target->settings()->IsWin() &&
-       target->output_type() == Target::SHARED_LIBRARY)) {
-    // Generate a name like "<toolchain>/<name>.<extension>".
-    ret.value().append(target->label().name());
-    ret.value().push_back('.');
-    ret.value().append(extension);
-    return ret;
-  }
-
-  // Libraries go into the library subdirectory like
-  // "<toolchain>/lib/<name>.<extension>".
-  if (target->output_type() == Target::SHARED_LIBRARY) {
-    ret.value().append(kLibDirWithSlash);
-    ret.value().append(target->label().name());
-    ret.value().push_back('.');
-    ret.value().append(extension);
-    return ret;
-  }
-
-  // Everything else goes next to the target's .ninja file like
-  // "<toolchain>/obj/<path>/<name>.<extension>".
-  ret.value().append(kObjectDirNoSlash);
-  AppendStringPiece(&ret.value(),
-                    target->label().dir().SourceAbsoluteWithOneSlash());
-  ret.value().append(target->label().name());
-  ret.value().push_back('.');
-  ret.value().append(extension);
-  return ret;
-}