eb3551d0a3
This roll includes: - [inspector_protocol] Introduce protocol::Serializable [1] [1] https://codereview.chromium.org/2526603002 BUG=chromium:350797 R=dgozman@chromium.org Review-Url: https://codereview.chromium.org/2523583005 Cr-Commit-Position: refs/heads/master@{#41197}
606 lines
24 KiB
Python
606 lines
24 KiB
Python
# Copyright 2016 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import os.path
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import sys
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import optparse
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import collections
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import functools
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import re
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import copy
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try:
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import json
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except ImportError:
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import simplejson as json
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# Path handling for libraries and templates
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# Paths have to be normalized because Jinja uses the exact template path to
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# determine the hash used in the cache filename, and we need a pre-caching step
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# to be concurrency-safe. Use absolute path because __file__ is absolute if
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# module is imported, and relative if executed directly.
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# If paths differ between pre-caching and individual file compilation, the cache
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# is regenerated, which causes a race condition and breaks concurrent build,
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# since some compile processes will try to read the partially written cache.
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module_path, module_filename = os.path.split(os.path.realpath(__file__))
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def read_config():
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# pylint: disable=W0703
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def json_to_object(data, output_base, config_base):
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def json_object_hook(object_dict):
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items = [(k, os.path.join(config_base, v) if k == "path" else v) for (k, v) in object_dict.items()]
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items = [(k, os.path.join(output_base, v) if k == "output" else v) for (k, v) in items]
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keys, values = zip(*items)
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return collections.namedtuple('X', keys)(*values)
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return json.loads(data, object_hook=json_object_hook)
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def init_defaults(config_tuple, path, defaults):
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keys = list(config_tuple._fields) # pylint: disable=E1101
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values = [getattr(config_tuple, k) for k in keys]
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for i in xrange(len(keys)):
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if hasattr(values[i], "_fields"):
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values[i] = init_defaults(values[i], path + "." + keys[i], defaults)
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for optional in defaults:
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if optional.find(path + ".") != 0:
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continue
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optional_key = optional[len(path) + 1:]
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if optional_key.find(".") == -1 and optional_key not in keys:
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keys.append(optional_key)
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values.append(defaults[optional])
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return collections.namedtuple('X', keys)(*values)
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try:
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cmdline_parser = optparse.OptionParser()
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cmdline_parser.add_option("--output_base")
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cmdline_parser.add_option("--jinja_dir")
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cmdline_parser.add_option("--config")
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cmdline_parser.add_option("--config_value", action="append", type="string")
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arg_options, _ = cmdline_parser.parse_args()
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jinja_dir = arg_options.jinja_dir
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if not jinja_dir:
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raise Exception("jinja directory must be specified")
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output_base = arg_options.output_base
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if not output_base:
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raise Exception("Base output directory must be specified")
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config_file = arg_options.config
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if not config_file:
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raise Exception("Config file name must be specified")
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config_base = os.path.dirname(config_file)
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config_values = arg_options.config_value
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if not config_values:
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config_values = []
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except Exception:
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# Work with python 2 and 3 http://docs.python.org/py3k/howto/pyporting.html
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exc = sys.exc_info()[1]
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sys.stderr.write("Failed to parse command-line arguments: %s\n\n" % exc)
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exit(1)
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try:
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config_json_file = open(config_file, "r")
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config_json_string = config_json_file.read()
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config_partial = json_to_object(config_json_string, output_base, config_base)
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config_json_file.close()
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defaults = {
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".use_snake_file_names": False,
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".use_title_case_methods": False,
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".imported": False,
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".imported.export_macro": "",
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".imported.export_header": False,
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".imported.header": False,
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".imported.package": False,
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".protocol.export_macro": "",
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".protocol.export_header": False,
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".protocol.options": False,
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".exported": False,
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".exported.export_macro": "",
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".exported.export_header": False,
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".lib": False,
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".lib.export_macro": "",
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".lib.export_header": False,
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}
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for key_value in config_values:
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parts = key_value.split("=")
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if len(parts) == 2:
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defaults["." + parts[0]] = parts[1]
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return (jinja_dir, config_file, init_defaults(config_partial, "", defaults))
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except Exception:
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# Work with python 2 and 3 http://docs.python.org/py3k/howto/pyporting.html
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exc = sys.exc_info()[1]
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sys.stderr.write("Failed to parse config file: %s\n\n" % exc)
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exit(1)
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def to_title_case(name):
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return name[:1].upper() + name[1:]
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def dash_to_camelcase(word):
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prefix = ""
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if word[0] == "-":
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prefix = "Negative"
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word = word[1:]
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return prefix + "".join(to_title_case(x) or "-" for x in word.split("-"))
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def to_snake_case(name):
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return re.sub(r"([a-z0-9])([A-Z])", r"\1_\2", name, sys.maxint).lower()
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def to_method_case(config, name):
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if config.use_title_case_methods:
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return to_title_case(name)
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return name
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def initialize_jinja_env(jinja_dir, cache_dir, config):
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# pylint: disable=F0401
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sys.path.insert(1, os.path.abspath(jinja_dir))
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import jinja2
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jinja_env = jinja2.Environment(
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loader=jinja2.FileSystemLoader(module_path),
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# Bytecode cache is not concurrency-safe unless pre-cached:
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# if pre-cached this is read-only, but writing creates a race condition.
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bytecode_cache=jinja2.FileSystemBytecodeCache(cache_dir),
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keep_trailing_newline=True, # newline-terminate generated files
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lstrip_blocks=True, # so can indent control flow tags
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trim_blocks=True)
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jinja_env.filters.update({"to_title_case": to_title_case, "dash_to_camelcase": dash_to_camelcase, "to_method_case": functools.partial(to_method_case, config)})
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jinja_env.add_extension("jinja2.ext.loopcontrols")
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return jinja_env
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def patch_full_qualified_refs(protocol):
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def patch_full_qualified_refs_in_domain(json, domain_name):
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if isinstance(json, list):
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for item in json:
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patch_full_qualified_refs_in_domain(item, domain_name)
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if not isinstance(json, dict):
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return
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for key in json:
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if key == "type" and json[key] == "string":
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json[key] = domain_name + ".string"
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if key != "$ref":
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patch_full_qualified_refs_in_domain(json[key], domain_name)
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continue
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if json["$ref"].find(".") == -1:
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json["$ref"] = domain_name + "." + json["$ref"]
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return
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for domain in protocol.json_api["domains"]:
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patch_full_qualified_refs_in_domain(domain, domain["domain"])
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def calculate_imports_and_exports(config, protocol):
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def has_exports(json_value, clear):
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result = False
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if isinstance(json_value, list):
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for item in json_value:
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result = has_exports(item, clear) or result
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if isinstance(json_value, dict):
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if "exported" in json_value and json_value["exported"]:
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result = True
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if "exported" in json_value and clear:
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del json_value["exported"]
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for key in json_value:
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result = has_exports(json_value[key], clear) or result
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return result
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imported_domains = protocol.imported_domains
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if config.protocol.options:
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protocol.generate_domains = [rule.domain for rule in config.protocol.options]
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imported_domains = list(set(protocol.imported_domains) - set(protocol.generate_domains))
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exported_domains = protocol.generate_domains
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protocol.imported_domains = []
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protocol.exported_domains = []
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for domain_json in protocol.json_api["domains"]:
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domain = domain_json["domain"]
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clear = domain not in exported_domains and domain not in imported_domains
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if not has_exports(domain_json, clear):
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continue
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if domain in exported_domains:
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domain_json["has_exports"] = True
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protocol.exported_domains.append(domain)
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if domain in imported_domains:
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protocol.imported_domains.append(domain)
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def create_imported_type_definition(domain_name, type, imported_namespace):
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# pylint: disable=W0622
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return {
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"return_type": "std::unique_ptr<%s::%s::API::%s>" % (imported_namespace, domain_name, type["id"]),
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"pass_type": "std::unique_ptr<%s::%s::API::%s>" % (imported_namespace, domain_name, type["id"]),
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"to_raw_type": "%s.get()",
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"to_pass_type": "std::move(%s)",
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"to_rvalue": "std::move(%s)",
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"type": "std::unique_ptr<%s::%s::API::%s>" % (imported_namespace, domain_name, type["id"]),
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"raw_type": "%s::%s::API::%s" % (imported_namespace, domain_name, type["id"]),
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"raw_pass_type": "%s::%s::API::%s*" % (imported_namespace, domain_name, type["id"]),
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"raw_return_type": "%s::%s::API::%s*" % (imported_namespace, domain_name, type["id"]),
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}
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def create_user_type_definition(domain_name, type):
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# pylint: disable=W0622
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return {
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"return_type": "std::unique_ptr<protocol::%s::%s>" % (domain_name, type["id"]),
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"pass_type": "std::unique_ptr<protocol::%s::%s>" % (domain_name, type["id"]),
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"to_raw_type": "%s.get()",
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"to_pass_type": "std::move(%s)",
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"to_rvalue": "std::move(%s)",
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"type": "std::unique_ptr<protocol::%s::%s>" % (domain_name, type["id"]),
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"raw_type": "protocol::%s::%s" % (domain_name, type["id"]),
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"raw_pass_type": "protocol::%s::%s*" % (domain_name, type["id"]),
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"raw_return_type": "protocol::%s::%s*" % (domain_name, type["id"]),
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}
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def create_object_type_definition():
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# pylint: disable=W0622
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return {
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"return_type": "std::unique_ptr<protocol::DictionaryValue>",
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"pass_type": "std::unique_ptr<protocol::DictionaryValue>",
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"to_raw_type": "%s.get()",
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"to_pass_type": "std::move(%s)",
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"to_rvalue": "std::move(%s)",
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"type": "std::unique_ptr<protocol::DictionaryValue>",
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"raw_type": "protocol::DictionaryValue",
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"raw_pass_type": "protocol::DictionaryValue*",
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"raw_return_type": "protocol::DictionaryValue*",
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}
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def create_any_type_definition():
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# pylint: disable=W0622
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return {
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"return_type": "std::unique_ptr<protocol::Value>",
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"pass_type": "std::unique_ptr<protocol::Value>",
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"to_raw_type": "%s.get()",
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"to_pass_type": "std::move(%s)",
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"to_rvalue": "std::move(%s)",
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"type": "std::unique_ptr<protocol::Value>",
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"raw_type": "protocol::Value",
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"raw_pass_type": "protocol::Value*",
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"raw_return_type": "protocol::Value*",
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}
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def create_string_type_definition():
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# pylint: disable=W0622
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return {
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"return_type": "String",
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"pass_type": "const String&",
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"to_pass_type": "%s",
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"to_raw_type": "%s",
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"to_rvalue": "%s",
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"type": "String",
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"raw_type": "String",
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"raw_pass_type": "const String&",
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"raw_return_type": "String",
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}
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def create_primitive_type_definition(type):
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# pylint: disable=W0622
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typedefs = {
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"number": "double",
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"integer": "int",
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"boolean": "bool"
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}
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defaults = {
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"number": "0",
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"integer": "0",
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"boolean": "false"
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}
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jsontypes = {
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"number": "TypeDouble",
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"integer": "TypeInteger",
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"boolean": "TypeBoolean",
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}
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return {
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"return_type": typedefs[type],
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"pass_type": typedefs[type],
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"to_pass_type": "%s",
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"to_raw_type": "%s",
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"to_rvalue": "%s",
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"type": typedefs[type],
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"raw_type": typedefs[type],
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"raw_pass_type": typedefs[type],
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"raw_return_type": typedefs[type],
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"default_value": defaults[type]
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}
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def wrap_array_definition(type):
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# pylint: disable=W0622
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return {
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"return_type": "std::unique_ptr<protocol::Array<%s>>" % type["raw_type"],
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"pass_type": "std::unique_ptr<protocol::Array<%s>>" % type["raw_type"],
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"to_raw_type": "%s.get()",
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"to_pass_type": "std::move(%s)",
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"to_rvalue": "std::move(%s)",
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"type": "std::unique_ptr<protocol::Array<%s>>" % type["raw_type"],
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"raw_type": "protocol::Array<%s>" % type["raw_type"],
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"raw_pass_type": "protocol::Array<%s>*" % type["raw_type"],
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"raw_return_type": "protocol::Array<%s>*" % type["raw_type"],
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"out_type": "protocol::Array<%s>&" % type["raw_type"],
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}
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def create_type_definitions(protocol, imported_namespace):
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protocol.type_definitions = {}
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protocol.type_definitions["number"] = create_primitive_type_definition("number")
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protocol.type_definitions["integer"] = create_primitive_type_definition("integer")
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protocol.type_definitions["boolean"] = create_primitive_type_definition("boolean")
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protocol.type_definitions["object"] = create_object_type_definition()
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protocol.type_definitions["any"] = create_any_type_definition()
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for domain in protocol.json_api["domains"]:
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protocol.type_definitions[domain["domain"] + ".string"] = create_string_type_definition()
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if not ("types" in domain):
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continue
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for type in domain["types"]:
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type_name = domain["domain"] + "." + type["id"]
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if type["type"] == "object" and domain["domain"] in protocol.imported_domains:
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protocol.type_definitions[type_name] = create_imported_type_definition(domain["domain"], type, imported_namespace)
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elif type["type"] == "object":
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protocol.type_definitions[type_name] = create_user_type_definition(domain["domain"], type)
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elif type["type"] == "array":
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items_type = type["items"]["type"]
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protocol.type_definitions[type_name] = wrap_array_definition(protocol.type_definitions[items_type])
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elif type["type"] == domain["domain"] + ".string":
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protocol.type_definitions[type_name] = create_string_type_definition()
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else:
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protocol.type_definitions[type_name] = create_primitive_type_definition(type["type"])
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def type_definition(protocol, name):
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return protocol.type_definitions[name]
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def resolve_type(protocol, prop):
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if "$ref" in prop:
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return protocol.type_definitions[prop["$ref"]]
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if prop["type"] == "array":
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return wrap_array_definition(resolve_type(protocol, prop["items"]))
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return protocol.type_definitions[prop["type"]]
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def join_arrays(dict, keys):
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result = []
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for key in keys:
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if key in dict:
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result += dict[key]
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return result
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def generate_command(protocol, config, domain, command):
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if not config.protocol.options:
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return domain in protocol.generate_domains
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for rule in config.protocol.options:
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if rule.domain != domain:
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continue
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if hasattr(rule, "include"):
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return command in rule.include
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if hasattr(rule, "exclude"):
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return command not in rule.exclude
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return True
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return False
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def generate_event(protocol, config, domain, event):
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if not config.protocol.options:
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return domain in protocol.generate_domains
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for rule in config.protocol.options:
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if rule.domain != domain:
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continue
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if hasattr(rule, "include_events"):
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return event in rule.include_events
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if hasattr(rule, "exclude_events"):
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return event not in rule.exclude_events
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return True
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return False
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def is_async_command(protocol, config, domain, command):
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if not config.protocol.options:
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return False
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for rule in config.protocol.options:
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if rule.domain != domain:
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continue
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if hasattr(rule, "async"):
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return command in rule.async
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return False
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return False
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def generate_disable(protocol, config, domain):
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if "commands" not in domain:
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return True
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for command in domain["commands"]:
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if command["name"] == "disable" and generate_command(protocol, config, domain["domain"], "disable"):
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return False
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return True
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def format_include(config, header, file_name=None):
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if file_name is not None:
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header = header + "/" + file_name + ".h"
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header = "\"" + header + "\"" if header[0] not in "<\"" else header
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if config.use_snake_file_names:
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header = to_snake_case(header)
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return header
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def to_file_name(config, file_name):
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if config.use_snake_file_names:
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return to_snake_case(file_name).replace(".cpp", ".cc")
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return file_name
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def read_protocol_file(file_name, json_api):
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input_file = open(file_name, "r")
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json_string = input_file.read()
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input_file.close()
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parsed_json = json.loads(json_string)
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version = parsed_json["version"]["major"] + "." + parsed_json["version"]["minor"]
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domains = []
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for domain in parsed_json["domains"]:
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domains.append(domain["domain"])
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domain["version"] = version
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json_api["domains"] += parsed_json["domains"]
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return domains
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class Protocol(object):
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def __init__(self):
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self.json_api = {}
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self.generate_domains = []
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self.imported_domains = []
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self.exported_domains = []
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def main():
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jinja_dir, config_file, config = read_config()
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protocol = Protocol()
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protocol.json_api = {"domains": []}
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protocol.generate_domains = read_protocol_file(config.protocol.path, protocol.json_api)
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protocol.imported_domains = read_protocol_file(config.imported.path, protocol.json_api) if config.imported else []
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patch_full_qualified_refs(protocol)
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calculate_imports_and_exports(config, protocol)
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for domain in protocol.json_api["domains"]:
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if "events" in domain:
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for event in domain["events"]:
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event_type = dict()
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event_type["description"] = "Wrapper for notification params"
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event_type["type"] = "object"
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event_type["id"] = to_title_case(event["name"]) + "Notification"
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if "parameters" in event:
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event_type["properties"] = copy.deepcopy(event["parameters"])
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if "types" not in domain:
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domain["types"] = list()
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domain["types"].append(event_type)
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create_type_definitions(protocol, "::".join(config.imported.namespace) if config.imported else "")
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if not config.exported and len(protocol.exported_domains):
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sys.stderr.write("Domains [%s] are exported, but config is missing export entry\n\n" % ", ".join(protocol.exported_domains))
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exit(1)
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if not os.path.exists(config.protocol.output):
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os.mkdir(config.protocol.output)
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if len(protocol.exported_domains) and not os.path.exists(config.exported.output):
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os.mkdir(config.exported.output)
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jinja_env = initialize_jinja_env(jinja_dir, config.protocol.output, config)
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inputs = []
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inputs.append(__file__)
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inputs.append(config_file)
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inputs.append(config.protocol.path)
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if config.imported:
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inputs.append(config.imported.path)
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templates_dir = os.path.join(module_path, "templates")
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inputs.append(os.path.join(templates_dir, "TypeBuilder_h.template"))
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inputs.append(os.path.join(templates_dir, "TypeBuilder_cpp.template"))
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inputs.append(os.path.join(templates_dir, "Exported_h.template"))
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inputs.append(os.path.join(templates_dir, "Imported_h.template"))
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h_template = jinja_env.get_template("templates/TypeBuilder_h.template")
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cpp_template = jinja_env.get_template("templates/TypeBuilder_cpp.template")
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exported_template = jinja_env.get_template("templates/Exported_h.template")
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imported_template = jinja_env.get_template("templates/Imported_h.template")
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outputs = dict()
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for domain in protocol.json_api["domains"]:
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class_name = domain["domain"]
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template_context = {
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"config": config,
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"domain": domain,
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"join_arrays": join_arrays,
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"resolve_type": functools.partial(resolve_type, protocol),
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"type_definition": functools.partial(type_definition, protocol),
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"generate_command": functools.partial(generate_command, protocol, config),
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"generate_event": functools.partial(generate_event, protocol, config),
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"is_async_command": functools.partial(is_async_command, protocol, config),
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"generate_disable": functools.partial(generate_disable, protocol, config),
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"format_include": functools.partial(format_include, config),
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}
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if domain["domain"] in protocol.generate_domains:
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outputs[os.path.join(config.protocol.output, to_file_name(config, class_name + ".h"))] = h_template.render(template_context)
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outputs[os.path.join(config.protocol.output, to_file_name(config, class_name + ".cpp"))] = cpp_template.render(template_context)
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if domain["domain"] in protocol.exported_domains:
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outputs[os.path.join(config.exported.output, to_file_name(config, class_name + ".h"))] = exported_template.render(template_context)
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if domain["domain"] in protocol.imported_domains:
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outputs[os.path.join(config.protocol.output, to_file_name(config, class_name + ".h"))] = imported_template.render(template_context)
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if config.lib:
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template_context = {
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"config": config,
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"format_include": functools.partial(format_include, config),
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}
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lib_templates_dir = os.path.join(module_path, "lib")
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# Note these should be sorted in the right order.
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# TODO(dgozman): sort them programmatically based on commented includes.
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lib_h_templates = [
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"Collections_h.template",
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"ErrorSupport_h.template",
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"Values_h.template",
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"Object_h.template",
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"ValueConversions_h.template",
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"Maybe_h.template",
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"Array_h.template",
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"DispatcherBase_h.template",
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"Parser_h.template",
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]
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lib_cpp_templates = [
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"Protocol_cpp.template",
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"ErrorSupport_cpp.template",
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"Values_cpp.template",
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"Object_cpp.template",
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"DispatcherBase_cpp.template",
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"Parser_cpp.template",
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]
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forward_h_templates = [
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"Forward_h.template",
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"Allocator_h.template",
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"FrontendChannel_h.template",
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]
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def generate_lib_file(file_name, template_files):
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parts = []
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for template_file in template_files:
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inputs.append(os.path.join(lib_templates_dir, template_file))
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template = jinja_env.get_template("lib/" + template_file)
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parts.append(template.render(template_context))
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outputs[file_name] = "\n\n".join(parts)
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generate_lib_file(os.path.join(config.lib.output, to_file_name(config, "Forward.h")), forward_h_templates)
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generate_lib_file(os.path.join(config.lib.output, to_file_name(config, "Protocol.h")), lib_h_templates)
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generate_lib_file(os.path.join(config.lib.output, to_file_name(config, "Protocol.cpp")), lib_cpp_templates)
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# Make gyp / make generatos happy, otherwise make rebuilds world.
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inputs_ts = max(map(os.path.getmtime, inputs))
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up_to_date = True
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for output_file in outputs.iterkeys():
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if not os.path.exists(output_file) or os.path.getmtime(output_file) < inputs_ts:
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up_to_date = False
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break
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if up_to_date:
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sys.exit()
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for file_name, content in outputs.iteritems():
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out_file = open(file_name, "w")
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out_file.write(content)
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out_file.close()
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main()
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