forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
json_schema_api.gni
372 lines (331 loc) · 12.3 KB
/
json_schema_api.gni
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
# Copyright 2014 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This file contains templates for generating static libraries based on the
# corresponding output of the schema compiler tools. The output can be either
# the generated C++ types (generated_types template), the bundled extension
# function registration (json_schema_api template with
# bundle_registration = true), or the bundled JSON strings of the APIs
# (json_schema_api template with bundle = true). The generated library target
# has implicit hard dependencies on all schema files listed by the invoker and
# is itself a hard dependency.
#
# Common variables that can be used in all templates are:
# - sources [required] A list of schema files used to generate the C++ types.
#
# - root_namespace [required]
# A Python string substituion pattern used to generate the C++
# namespace for each API. Use %(namespace)s to replace with the API
# namespace, like "toplevel::%(namespace)s_api".
#
# schema_include_rules [optional]
# A list of paths to include when searching for referenced objects,
# with the namespace separated by a :.
# Example:
# [ '/foo/bar:Foo::Bar::%(namespace)s' ]
#
# - configs [optional]
# Extra gn configs to apply to the compile step.
#
# - deps [optional]
# If any deps are specified they will be inherited by the static library
# target.
#
# - visibility [optional]
# A specific visibility to apply for the generated static library. If
# omitted, visibility will be inherited from the invoker.
# NOTE: Common variables here for when multiple templates use them.
compiler_root = "//tools/json_schema_compiler"
compiler_script = "$compiler_root/compiler.py"
compiler_sources = [
"$compiler_root/cc_generator.py",
"$compiler_root/code_util.py",
"$compiler_root/compiler.py",
"$compiler_root/cpp_bundle_generator.py",
"$compiler_root/cpp_generator.py",
"$compiler_root/cpp_type_generator.py",
"$compiler_root/cpp_util.py",
"$compiler_root/h_generator.py",
"$compiler_root/idl_schema.py",
"$compiler_root/model.py",
"$compiler_root/util_cc_helper.py",
]
# Outputs the bundle of generated JSON strings for each API.
#
# Template-specific variables (in addition to the common ones described above):
#
# bundle_name [required]
# A string to prepend to generated bundle class names, so that multiple
# bundle rules can be used without conflicting. Only used with one of
# the cpp-bundle generators.
#
# root [optional]
# base directory of the source json file(s)
# defaults to "//"
#
# target_prefix [optional]
# subdir below root_gen_dir that is the base directory for the generated
# output files, defaults to empty string (no subdir)
template("generated_json_strings") {
assert(defined(invoker.sources),
"\"sources\" must be defined for the $target_name template.")
assert(defined(invoker.root_namespace),
"\"root_namespace\" must be defined for the $target_name template.")
assert(defined(invoker.bundle_name),
"\"bundle_name\" must be defined for bundles")
assert(!defined(invoker.root) || defined(invoker.target_prefix),
"\"target_prefix\" is required when \"root\" is specified")
schema_include_rules = ""
if (defined(invoker.schema_include_rules)) {
schema_include_rules = invoker.schema_include_rules
}
include_dir = root_gen_dir
destdir = rebase_path(root_gen_dir, root_build_dir)
if (defined(invoker.target_prefix)) {
destdir += "/${invoker.target_prefix}"
include_dir += "/${invoker.target_prefix}"
}
generated_config_name = target_name + "_generated_config"
config(generated_config_name) {
include_dirs = [ include_dir ]
}
root_namespace = invoker.root_namespace
if (defined(invoker.root)) {
root_folder = invoker.root
} else {
root_folder = "//"
}
# Save the target_name, since other targets (like the action() and
# action_foreach() below) need to reference them, but would have their own
# target_name variable.
root_target_name = target_name
bundle_generator_schema_name = target_name + "_bundle_generator_schema"
action(bundle_generator_schema_name) {
visibility = [ ":$root_target_name" ]
script = compiler_script
inputs = compiler_sources + invoker.sources
outputs = [
"$target_gen_dir/generated_schemas.cc",
"$target_gen_dir/generated_schemas.h",
]
args = [
"--root=" + rebase_path(root_folder, root_build_dir),
"--destdir=$destdir",
"--namespace=$root_namespace",
"--bundle-name=" + invoker.bundle_name,
"--generator=cpp-bundle-schema",
"--include-rules=$schema_include_rules",
] + rebase_path(invoker.sources, root_build_dir)
}
# Compute the contents of the library/source set.
lib_sources = get_target_outputs(":$bundle_generator_schema_name")
lib_deps = [ ":$bundle_generator_schema_name" ]
lib_public_deps = [
# For base::StringPiece.
"//base",
]
lib_extra_configs = []
if (defined(invoker.configs)) {
lib_extra_configs += invoker.configs
}
if (defined(invoker.deps)) {
lib_deps += invoker.deps
}
static_library(target_name) {
sources = lib_sources
deps = lib_deps
public_deps = lib_public_deps
configs += lib_extra_configs
configs += [ "//build/config/compiler:wexit_time_destructors" ]
public_configs = [ ":$generated_config_name" ]
if (defined(invoker.visibility)) {
visibility = invoker.visibility
}
}
}
# Outputs the bundle of extension function registrations.
#
# Template-specific variables (in addition to the common ones described above):
#
# bundle_name [required]
# A string to prepend to generated bundle class names, so that multiple
# bundle rules can be used without conflicting. Only used with one of
# the cpp-bundle generators.
#
# impl_dir [required if bundle_registration = true, otherwise unused]
# The path containing C++ implementations of API functions. This path is
# used as the root path when looking for {schema}/{schema}_api.h headers
# when generating API registration bundles. Such headers, if found, are
# automatically included by the generated code.
#
# root [optional]
# base directory of the source json file(s)
# defaults to "//"
#
# target_prefix [optional]
# subdir below root_gen_dir that is the base directory for the generated
# output files, defaults to empty string (no subdir)
template("function_registration") {
assert(defined(invoker.sources),
"\"sources\" must be defined for the $target_name template.")
assert(defined(invoker.root_namespace),
"\"root_namespace\" must be defined for the $target_name template.")
assert(defined(invoker.bundle_name),
"\"bundle_name\" must be defined for bundle registrations")
assert(defined(invoker.impl_dir),
"\"impl_dir\" must be defined for the $target_name template.")
assert(!defined(invoker.root) || defined(invoker.target_prefix),
"\"target_prefix\" is required when \"root\" is specified")
schema_include_rules = ""
if (defined(invoker.schema_include_rules)) {
schema_include_rules = invoker.schema_include_rules
}
include_dir = root_gen_dir
destdir = rebase_path(root_gen_dir, root_build_dir)
if (defined(invoker.target_prefix)) {
destdir += "/${invoker.target_prefix}"
include_dir += "/${invoker.target_prefix}"
}
generated_config_name = target_name + "_generated_config"
config(generated_config_name) {
include_dirs = [ include_dir ]
}
root_namespace = invoker.root_namespace
# Save the target_name, since other targets (like the action() and
# action_foreach() below) need to reference them, but would have their own
# target_name variable.
root_target_name = target_name
if (defined(invoker.root)) {
root_folder = invoker.root
} else {
root_folder = "//"
}
# Child directory inside the generated file tree.
gen_child_dir = get_path_info(invoker.impl_dir + "/", "gen_dir")
bundle_generator_registration_name =
target_name + "_bundle_generator_registration"
action(bundle_generator_registration_name) {
visibility = [ ":$root_target_name" ]
script = compiler_script
inputs = compiler_sources + invoker.sources
outputs = [
"$gen_child_dir/generated_api_registration.cc",
"$gen_child_dir/generated_api_registration.h",
]
args = [
"--root=" + rebase_path(root_folder, root_build_dir),
"--destdir=$destdir",
"--namespace=$root_namespace",
"--bundle-name=" + invoker.bundle_name,
"--generator=cpp-bundle-registration",
"--impl-dir=" + rebase_path(invoker.impl_dir, root_folder),
"--include-rules=$schema_include_rules",
] + rebase_path(invoker.sources, root_build_dir)
}
# Compute the contents of the library/source set.
lib_sources = get_target_outputs(":$bundle_generator_registration_name")
lib_deps = [ ":$bundle_generator_registration_name" ]
lib_extra_configs = []
if (defined(invoker.configs)) {
lib_extra_configs += invoker.configs
}
if (defined(invoker.deps)) {
lib_deps += invoker.deps
}
static_library(target_name) {
sources = lib_sources
deps = lib_deps
public_deps = []
configs += lib_extra_configs
configs += [ "//build/config/compiler:wexit_time_destructors" ]
public_configs = [ ":$generated_config_name" ]
if (defined(invoker.visibility)) {
visibility = invoker.visibility
}
}
}
# Generates the C++ types for the given APIs.
#
# root [optional]
# base directory of the source json file(s)
# defaults to "//"
#
# target_prefix [optional]
# subdir below root_gen_dir that is the base directory for the generated
# output files, defaults to empty string (no subdir)
template("generated_types") {
assert(defined(invoker.sources),
"\"sources\" must be defined for the $target_name template.")
assert(defined(invoker.root_namespace),
"\"root_namespace\" must be defined for the $target_name template.")
assert(!defined(invoker.root) || defined(invoker.target_prefix),
"\"target_prefix\" is required when \"root\" is specified")
schema_include_rules = ""
if (defined(invoker.schema_include_rules)) {
schema_include_rules = invoker.schema_include_rules
}
include_dir = root_gen_dir
destdir = rebase_path(root_gen_dir, root_build_dir)
if (defined(invoker.target_prefix)) {
destdir += "/${invoker.target_prefix}"
include_dir += "/${invoker.target_prefix}"
}
generated_config_name = target_name + "_generated_config"
config(generated_config_name) {
include_dirs = [ include_dir ]
}
if (defined(invoker.root)) {
root_folder = invoker.root
} else {
root_folder = "//"
}
root_namespace = invoker.root_namespace
# Save the target_name, since other targets (like the action() and
# action_foreach() below) need to reference them, but would have their own
# target_name variable.
root_target_name = target_name
schema_generator_name = target_name + "_schema_generator"
action_foreach(schema_generator_name) {
visibility = [ ":$root_target_name" ]
script = compiler_script
sources = invoker.sources
inputs = compiler_sources
outputs = [
"$target_gen_dir/{{source_name_part}}.cc",
"$target_gen_dir/{{source_name_part}}.h",
]
args = [
"{{source}}",
"--root=" + rebase_path(root_folder, root_build_dir),
"--destdir=$destdir",
"--namespace=$root_namespace",
"--generator=cpp",
"--include-rules=$schema_include_rules",
]
}
# Compute the contents of the library/source set.
lib_sources = get_target_outputs(":$schema_generator_name")
lib_public_deps = [ ":$schema_generator_name" ]
lib_deps = [
"//base",
"//tools/json_schema_compiler:generated_api_util",
]
lib_extra_configs = []
if (defined(invoker.configs)) {
lib_extra_configs += invoker.configs
}
if (defined(invoker.deps)) {
lib_deps += invoker.deps
}
static_library(target_name) {
sources = lib_sources
deps = lib_deps
public_deps = lib_public_deps
configs += lib_extra_configs
configs += [ "//build/config/compiler:wexit_time_destructors" ]
public_configs = [ ":$generated_config_name" ]
if (defined(invoker.visibility)) {
visibility = invoker.visibility
}
}
}