shaka-packager/tools/gn/commands.cc

98 lines
2.7 KiB
C++

// 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/commands.h"
#include "tools/gn/item.h"
#include "tools/gn/item_node.h"
#include "tools/gn/label.h"
#include "tools/gn/setup.h"
#include "tools/gn/standard_out.h"
#include "tools/gn/target.h"
namespace commands {
CommandInfo::CommandInfo()
: help_short(NULL),
help(NULL),
runner(NULL) {
}
CommandInfo::CommandInfo(const char* in_help_short,
const char* in_help,
CommandRunner in_runner)
: help_short(in_help_short),
help(in_help),
runner(in_runner) {
}
const CommandInfoMap& GetCommands() {
static CommandInfoMap info_map;
if (info_map.empty()) {
#define INSERT_COMMAND(cmd) \
info_map[k##cmd] = CommandInfo(k##cmd##_HelpShort, \
k##cmd##_Help, \
&Run##cmd);
INSERT_COMMAND(Desc)
INSERT_COMMAND(Gen)
INSERT_COMMAND(Help)
#undef INSERT_COMMAND
}
return info_map;
}
const Target* GetTargetForDesc(const std::vector<std::string>& args) {
// Deliberately leaked to avoid expensive process teardown.
Setup* setup = new Setup;
if (!setup->DoSetup())
return NULL;
// FIXME(brettw): set the output dir to be a sandbox one to avoid polluting
// the real output dir with files written by the build scripts.
// Do the actual load. This will also write out the target ninja files.
if (!setup->Run())
return NULL;
// Need to resolve the label after we know the default toolchain.
// TODO(brettw) find the current directory and resolve the input label
// relative to that.
Label default_toolchain = setup->build_settings().toolchain_manager()
.GetDefaultToolchainUnlocked();
Value arg_value(NULL, args[0]);
Err err;
Label label = Label::Resolve(SourceDir(), default_toolchain, arg_value, &err);
if (err.has_error()) {
err.PrintToStdout();
return NULL;
}
ItemNode* node;
{
base::AutoLock lock(setup->build_settings().item_tree().lock());
node = setup->build_settings().item_tree().GetExistingNodeLocked(label);
}
if (!node) {
Err(Location(), "",
"I don't know about this \"" + label.GetUserVisibleName(false) +
"\"").PrintToStdout();
return NULL;
}
const Target* target = node->item()->AsTarget();
if (!target) {
Err(Location(), "Not a target.",
"The \"" + label.GetUserVisibleName(false) + "\" thing\n"
"is not a target. Somebody should probably implement this command for "
"other\nitem types.");
return NULL;
}
return target;
}
} // namespace commands