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Side by Side Diff: tools/json_schema_compiler/compiler.py

Issue 15677003: Generate externs automatically from json/idl files. Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: . Created 7 years, 7 months ago
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1 #!/usr/bin/env python 1 #!/usr/bin/env python
2 # Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
3 # Use of this source code is governed by a BSD-style license that can be 3 # Use of this source code is governed by a BSD-style license that can be
4 # found in the LICENSE file. 4 # found in the LICENSE file.
5 """Generator for C++ structs from api json files. 5 """Generator for C++ structs from api json files.
6 6
7 The purpose of this tool is to remove the need for hand-written code that 7 The purpose of this tool is to remove the need for hand-written code that
8 converts to and from base::Value types when receiving javascript api calls. 8 converts to and from base::Value types when receiving javascript api calls.
9 Originally written for generating code for extension apis. Reference schemas 9 Originally written for generating code for extension apis. Reference schemas
10 are in chrome/common/extensions/api. 10 are in chrome/common/extensions/api.
11 11
12 Usage example: 12 Usage example:
13 compiler.py --root /home/Work/src --namespace extensions windows.json 13 compiler.py --root /home/Work/src --namespace extensions windows.json
14 tabs.json 14 tabs.json
15 compiler.py --destdir gen --root /home/Work/src 15 compiler.py --destdir gen --root /home/Work/src
16 --namespace extensions windows.json tabs.json 16 --namespace extensions windows.json tabs.json
17 """ 17 """
18 18
19 import optparse 19 import optparse
20 import os 20 import os
21 import sys 21 import sys
22 22
23 from cpp_bundle_generator import CppBundleGenerator 23 from cpp_bundle_generator import CppBundleGenerator
24 from cpp_generator import CppGenerator 24 from cpp_generator import CppGenerator
25 from cpp_type_generator import CppTypeGenerator 25 from cpp_type_generator import CppTypeGenerator
26 from dart_generator import DartGenerator 26 from dart_generator import DartGenerator
27 from js_externs_generator import JsExternsGenerator
27 import json_schema 28 import json_schema
28 from model import Model, UnixName 29 from model import Model, UnixName
29 from schema_loader import SchemaLoader 30 from schema_loader import SchemaLoader
30 31
31 # Names of supported code generators, as specified on the command-line. 32 # Names of supported code generators, as specified on the command-line.
32 # First is default. 33 # First is default.
33 GENERATORS = ['cpp', 'cpp-bundle', 'dart'] 34 GENERATORS = ['cpp', 'cpp-bundle', 'dart', 'externs']
34 35
35 def GenerateSchema(generator, 36 def GenerateSchema(generator,
36 filenames, 37 filenames,
37 root, 38 root,
38 destdir, 39 destdir,
39 root_namespace, 40 root_namespace,
40 dart_overrides_dir): 41 dart_overrides_dir):
41 schema_loader = SchemaLoader(os.path.dirname(os.path.relpath( 42 schema_loader = SchemaLoader(os.path.dirname(os.path.relpath(
42 os.path.normpath(filenames[0]), root))) 43 os.path.normpath(filenames[0]), root)))
43 # Merge the source files into a single list of schemas. 44 # Merge the source files into a single list of schemas.
(...skipping 59 matching lines...) Expand 10 before | Expand all | Expand 10 after
103 cpp_generator = CppGenerator(type_generator, root_namespace) 104 cpp_generator = CppGenerator(type_generator, root_namespace)
104 generators = [ 105 generators = [
105 ('%s.h' % namespace.unix_name, cpp_generator.h_generator), 106 ('%s.h' % namespace.unix_name, cpp_generator.h_generator),
106 ('%s.cc' % namespace.unix_name, cpp_generator.cc_generator) 107 ('%s.cc' % namespace.unix_name, cpp_generator.cc_generator)
107 ] 108 ]
108 elif generator == 'dart': 109 elif generator == 'dart':
109 generators = [ 110 generators = [
110 ('%s.dart' % namespace.unix_name, DartGenerator( 111 ('%s.dart' % namespace.unix_name, DartGenerator(
111 dart_overrides_dir)) 112 dart_overrides_dir))
112 ] 113 ]
114 elif generator == 'externs':
115 generators = [
116 ('%s_externs.js' % namespace.unix_name, JsExternsGenerator())
117 ]
113 else: 118 else:
114 raise Exception('Unrecognised generator %s' % generator) 119 raise Exception('Unrecognised generator %s' % generator)
115 120
116 output_code = [] 121 output_code = []
117 for filename, generator in generators: 122 for filename, generator in generators:
118 code = generator.Generate(namespace).Render() 123 code = generator.Generate(namespace).Render()
119 if destdir: 124 if destdir:
120 with open(os.path.join(destdir, namespace.source_file_dir, 125 with open(os.path.join(destdir, namespace.source_file_dir,
121 filename), 'w') as f: 126 filename), 'w') as f:
122 f.write(code) 127 f.write(code)
(...skipping 27 matching lines...) Expand all
150 # Unless in bundle mode, only one file should be specified. 155 # Unless in bundle mode, only one file should be specified.
151 if opts.generator != 'cpp-bundle' and len(filenames) > 1: 156 if opts.generator != 'cpp-bundle' and len(filenames) > 1:
152 # TODO(sashab): Could also just use filenames[0] here and not complain. 157 # TODO(sashab): Could also just use filenames[0] here and not complain.
153 raise Exception( 158 raise Exception(
154 "Unless in bundle mode, only one file can be specified at a time.") 159 "Unless in bundle mode, only one file can be specified at a time.")
155 160
156 result = GenerateSchema(opts.generator, filenames, opts.root, opts.destdir, 161 result = GenerateSchema(opts.generator, filenames, opts.root, opts.destdir,
157 opts.namespace, opts.dart_overrides_dir) 162 opts.namespace, opts.dart_overrides_dir)
158 if not opts.destdir: 163 if not opts.destdir:
159 print result 164 print result
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