Make the fuchsia mojo/public repo the source of truth.

mojo/public/tools/bindings/pylib/mojom/parse/parser_runner.py

-#!/usr/bin/env python
-# Copyright 2015 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.
-
-"""This script drives the execution of the Mojom parser."""
-
-import os
-import platform
-import subprocess
-import sys
-
-
-# We assume this script is located in the Mojo SDK in
-# tools/bindings/pylib/mojom/parse.
-THIS_DIR = os.path.abspath(os.path.dirname(__file__))
-SDK_ROOT = os.path.abspath(os.path.join(THIS_DIR, os.pardir, os.pardir,
-    os.pardir, os.pardir, os.pardir))
-PYTHON_SDK_DIR = os.path.abspath(os.path.join(SDK_ROOT, "python"))
-sys.path.insert(0, PYTHON_SDK_DIR)
-# In order to use mojom_files_mojom we need to make sure the dummy mojo_system
-# can be found on the python path.
-sys.path.insert(0, os.path.join(PYTHON_SDK_DIR, "dummy_mojo_system"))
-
-from mojom.generate.generated import mojom_files_mojom
-from mojom.generate.generated import mojom_types_mojom
-from mojo_bindings import serialization
-
-def RunParser(sdk_root, file_names, import_directories=None,
-    meta_data_only=False):
-  """Runs the mojom parser. Only 64-bit Linux and Mac is supported.
-
-  Args:
-    sdk_root: {str} Absolute path to the root of the Mojo SDK. The parser
-        binary is expected to be found in
-        <sdk_root>/tools/bindings/mojom_tool/bin/<platform>
-
-    file_names {list of str} Paths to mojom files to be parsed. May be either
-        absolute or relative to the current working directory.
-
-    import_directories: {list of str} Optional specification of import
-        directories where mojom imports should be searched. The elements of the
-        list should be absolute paths or paths relative to the current working
-        directory.
-
-    meta_data_only: {bool} If True then the flag -meta-data-only
-        will be passed to the parser.
-
-  Returns:
-    {str} The serialized mojom_files.MojomFileGraph returned by mojom parser,
-    or None if the mojom parser returned a non-zero error code.
-  """
-  system_dirs = {
-      ("Linux", "64bit"): "linux64",
-      ("Darwin", "64bit"): "mac64",
-      }
-  system = (platform.system(), platform.architecture()[0])
-  if system not in system_dirs:
-    raise Exception("The mojom parser only supports Linux or Mac 64 bits.")
-
-  mojom_tool = os.path.join(sdk_root, "tools", "bindings", "mojom_tool",
-      "bin", system_dirs[system], "mojom")
-
-  if not os.path.exists(mojom_tool):
-    raise Exception(
-        "The mojom parser could not be found at %s. "
-        "You may need to run gclient sync."
-        % mojom_tool)
-
-  cmd = [mojom_tool, "parse"]
-  if import_directories:
-    cmd.extend(["-I", ",".join(import_directories)])
-  if meta_data_only:
-    cmd.extend(["-meta-data-only"])
-
-  cmd.extend(file_names)
-
-  try:
-    return subprocess.check_output(cmd)
-  except subprocess.CalledProcessError:
-    return None
-
-
-def DeserializeMojomFileGraph(serialized_bytes):
-  """Deserializes a mojom_files.MojomFileGraph.
-
-  Args:
-    serialized_bytes: {str} The serialized mojom_files.MojomFileGraph returned
-        by mojom parser
-  Returns:
-    {mojom_files.MojomFileGraph} The deserialized MojomFileGraph.
-  """
-  data = bytearray(serialized_bytes)
-  context = serialization.RootDeserializationContext(data, [])
-  return mojom_files_mojom.MojomFileGraph.Deserialize(context)
-
-def ParseToMojomFileGraph(sdk_root, file_names, import_directories=None,
-    meta_data_only=False):
-  """Runs the mojom parser and deserializes the result. Only 64-bit Linux and
-     Mac is supported.
-
-  Args:
-    sdk_root: {str} Absolute path to the root of the Mojo SDK. The parser
-        binary is expected to be found in
-        <sdk_root>/tools/bindings/mojom_tool/bin/<platform>
-
-    file_names {list of str} Paths to mojom files to be parsed. May be either
-        absolute or relative to the current working directory.
-
-    import_directories: {list of str} Optional specification of import
-        directories where mojom imports should be searched. The elements of the
-        list should be absolute paths or paths relative to the current working
-        directory.
-
-    meta_data_only: {bool} If True then the flag -meta-data-only
-        will be passed to the parser.
-
-  Returns:
-    {mojom_files.MojomFileGraph} The deserialized MojomFileGraph obtained by
-    deserializing the bytes returned by mojom parser, or None if the mojom
-    parser returned a non-zero error code.
-  """
-  serialized_bytes = RunParser(sdk_root, file_names, import_directories,
-      meta_data_only)
-  if serialized_bytes is None:
-    return None
-  return DeserializeMojomFileGraph(serialized_bytes)