blob: 56fc09d78cb18f6d5b5646630bdbd572e5662a03 [file] [log] [blame]
# Copyright 2017 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.
import collections
import json
import os.path
import re
import sys
file_name = None
description = ''
primitiveTypes = ['integer', 'number', 'boolean', 'string', 'object', 'any', 'array']
def assignType(item, type, isArray=False):
if isArray:
item['type'] = 'array'
item['items'] = collections.OrderedDict()
assignType(item['items'], type)
return
if type == 'enum':
type = 'string'
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):
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('^(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('^ depends on ([^\s]+)').match(line)
if match:
if 'dependencies' not in domain:
domain['dependencies'] = []
domain['dependencies'].append(match.group(1))
continue
match = re.compile('^ (experimental )?(deprecated )?type (.*) 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))
domain['types'].append(item)
continue
match = re.compile('^ (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('^ (experimental )?(deprecated )?(optional )?(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))
if match.group(5) == 'enum':
enumliterals = param['enum'] = []
subitems.append(param)
continue
match = re.compile('^ (parameters|returns|properties)').match(line)
if match:
subitems = item[match.group(1)] = []
continue
match = re.compile('^ enum').match(line)
if match:
enumliterals = item['enum'] = []
continue
match = re.compile('^version').match(line)
if match:
continue
match = re.compile('^ major (\d+)').match(line)
if match:
protocol['version']['major'] = match.group(1)
continue
match = re.compile('^ minor (\d+)').match(line)
if match:
protocol['version']['minor'] = match.group(1)
continue
match = re.compile('^ redirect ([^\s]+)').match(line)
if match:
item['redirect'] = match.group(1)
continue
match = re.compile('^ ( )?[^\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 main(argv):
if len(argv) < 2:
sys.stderr.write("Usage: %s <protocol.pdl> <protocol.json>\n" % sys.argv[0])
return 1
global file_name
file_name = os.path.normpath(argv[0])
input_file = open(file_name, "r")
pdl_string = input_file.read()
protocol = parse(pdl_string)
output_file = open(argv[0].replace('.pdl', '.json'), 'wb')
json.dump(protocol, output_file, indent=4, separators=(',', ': '))
output_file.close()
output_file = open(os.path.normpath(argv[1]), 'wb')
json.dump(protocol, output_file, indent=4, separators=(',', ': '))
output_file.close()
if __name__ == '__main__':
sys.exit(main(sys.argv[1:]))