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# Copyright 2018 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from __future__ import print_function
import collections
import json
import os.path
import re
import sys
description = ''
primitiveTypes = ['integer', 'number', 'boolean', 'string', 'object',
'any', 'array', 'binary']
def assignType(item, type, is_array=False, map_binary_to_string=False):
if is_array:
item['type'] = 'array'
item['items'] = collections.OrderedDict()
assignType(item['items'], type, False, map_binary_to_string)
return
if type == 'enum':
type = 'string'
if map_binary_to_string and type == 'binary':
type = 'string'
if 'description' in item:
item['description'] = (item['description'] +
' (Encoded as a base64 string when passed over JSON)')
if type in primitiveTypes:
item['type'] = type
else:
item['$ref'] = type
def createItem(d, experimental, deprecated, name=None):
result = collections.OrderedDict(d)
if name:
result['name'] = name
global description
if description:
result['description'] = description.strip()
if experimental:
result['experimental'] = True
if deprecated:
result['deprecated'] = True
return result
def parse(data, file_name, map_binary_to_string=False):
protocol = collections.OrderedDict()
protocol['version'] = collections.OrderedDict()
protocol['domains'] = []
domain = None
item = None
subitems = None
nukeDescription = False
global description
lines = data.split('\n')
for i in range(0, len(lines)):
if nukeDescription:
description = ''
nukeDescription = False
line = lines[i]
trimLine = line.strip()
if trimLine.startswith('#'):
if len(description):
description += '\n'
description += trimLine[2:]
continue
else:
nukeDescription = True
if len(trimLine) == 0:
continue
match = re.compile(
r'^(experimental )?(deprecated )?domain (.*)').match(line)
if match:
domain = createItem({'domain' : match.group(3)}, match.group(1),
match.group(2))
protocol['domains'].append(domain)
continue
match = re.compile(r'^ depends on ([^\s]+)').match(line)
if match:
if 'dependencies' not in domain:
domain['dependencies'] = []
domain['dependencies'].append(match.group(1))
continue
match = re.compile(r'^ (experimental )?(deprecated )?type (.*) '
r'extends (array of )?([^\s]+)').match(line)
if match:
if 'types' not in domain:
domain['types'] = []
item = createItem({'id': match.group(3)}, match.group(1), match.group(2))
assignType(item, match.group(5), match.group(4), map_binary_to_string)
domain['types'].append(item)
continue
match = re.compile(
r'^ (experimental )?(deprecated )?(command|event) (.*)').match(line)
if match:
list = []
if match.group(3) == 'command':
if 'commands' in domain:
list = domain['commands']
else:
list = domain['commands'] = []
else:
if 'events' in domain:
list = domain['events']
else:
list = domain['events'] = []
item = createItem({}, match.group(1), match.group(2), match.group(4))
list.append(item)
continue
match = re.compile(
r'^ (experimental )?(deprecated )?(optional )?'
r'(array of )?([^\s]+) ([^\s]+)').match(line)
if match:
param = createItem({}, match.group(1), match.group(2), match.group(6))
if match.group(3):
param['optional'] = True
assignType(param, match.group(5), match.group(4), map_binary_to_string)
if match.group(5) == 'enum':
enumliterals = param['enum'] = []
subitems.append(param)
continue
match = re.compile(r'^ (parameters|returns|properties)').match(line)
if match:
subitems = item[match.group(1)] = []
continue
match = re.compile(r'^ enum').match(line)
if match:
enumliterals = item['enum'] = []
continue
match = re.compile(r'^version').match(line)
if match:
continue
match = re.compile(r'^ major (\d+)').match(line)
if match:
protocol['version']['major'] = match.group(1)
continue
match = re.compile(r'^ minor (\d+)').match(line)
if match:
protocol['version']['minor'] = match.group(1)
continue
match = re.compile(r'^ redirect ([^\s]+)').match(line)
if match:
item['redirect'] = match.group(1)
continue
match = re.compile(r'^ ( )?[^\s]+$').match(line)
if match:
# enum literal
enumliterals.append(trimLine)
continue
print('Error in %s:%s, illegal token: \t%s' % (file_name, i, line))
sys.exit(1)
return protocol
def loads(data, file_name, map_binary_to_string=False):
if file_name.endswith(".pdl"):
return parse(data, file_name, map_binary_to_string)
return json.loads(data)
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