1 # Copyright 2014 The Chromium Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file.
5 # Defines a static library corresponding to the output of schema compiler tools
6 # over a set of extensions API schemas (IDL or JSON format.) The library target
7 # has implicit hard dependencies on all schema files listed by the invoker and
8 # is itself a hard dependency.
10 # Invocations of this template may use the following variables:
12 # sources [required] A list of schema files to be compiled.
14 # root_namespace [required]
15 # A Python string substituion pattern used to generate the C++
16 # namespace for each API. Use %(namespace)s to replace with the API
17 # namespace, like "toplevel::%(namespace)s_api".
19 # schema_include_rules [optional]
20 # A list of paths to include when searching for referenced objects,
21 # with the namespace separated by a :.
23 # [ '/foo/bar:Foo::Bar::%(namespace)s' ]
25 # schemas [optional, default = false]
26 # Boolean indicating if the schema files should be generated.
28 # bundle [optional, default = false]
29 # Boolean indicating if the schema bundle files should be generated.
31 # bundle_registration [optional, default = false]
32 # Boolean indicating if the API registration bundle files should be generated.
34 # bundle_name [required if bundle or bundle_registrations]:
35 # A string to prepend to generated bundle class names, so that multiple
36 # bundle rules can be used without conflicting. Only used with one of
37 # the cpp-bundle generators.
39 # impl_dir [required if bundle_registration = true, otherwise unused]
40 # The path containing C++ implementations of API functions. This path is
41 # used as the root path when looking for {schema}/{schema}_api.h headers
42 # when generating API registration bundles. Such headers, if found, are
43 # automatically included by the generated code.
45 # uncompiled_sources [optional, only used when bundle = true or
46 # bundle_registration = true]
47 # A list of schema files which should not be compiled, but which should still
48 # be processed for API bundle generation.
51 # Extra configs to apply to the compile step.
54 # If any deps are specified they will be inherited by the static library
57 # generate_static_library [optional, defaults to false]
58 # Produces a static library instead of a source_set.
60 # The generated library target also inherits the visibility and output_name
63 template("json_schema_api") {
64 assert(defined(invoker.sources),
65 "\"sources\" must be defined for the $target_name template.")
66 assert(defined(invoker.root_namespace),
67 "\"root_namespace\" must be defined for the $target_name template.")
69 schemas = defined(invoker.schemas) && invoker.schemas
70 bundle = defined(invoker.bundle) && invoker.bundle
72 defined(invoker.bundle_registration) && invoker.bundle_registration
74 schema_include_rules = ""
75 if (defined(invoker.schema_include_rules)) {
76 schema_include_rules = invoker.schema_include_rules
79 # Keep a copy of the target_name here since it will be trampled
81 target_visibility = [ ":$target_name" ]
83 generated_config_name = target_name + "_generated_config"
84 config(generated_config_name) {
85 include_dirs = [ root_gen_dir ]
86 visibility = target_visibility
89 root_namespace = invoker.root_namespace
91 compiler_root = "//tools/json_schema_compiler"
92 compiler_script = "$compiler_root/compiler.py"
94 "$compiler_root/cc_generator.py",
95 "$compiler_root/code.py",
96 "$compiler_root/compiler.py",
97 "$compiler_root/cpp_bundle_generator.py",
98 "$compiler_root/cpp_generator.py",
99 "$compiler_root/cpp_type_generator.py",
100 "$compiler_root/cpp_util.py",
101 "$compiler_root/h_generator.py",
102 "$compiler_root/idl_schema.py",
103 "$compiler_root/model.py",
104 "$compiler_root/util_cc_helper.py",
108 schema_generator_name = target_name + "_schema_generator"
109 action_foreach(schema_generator_name) {
110 script = compiler_script
111 sources = invoker.sources
112 inputs = compiler_sources
114 "$target_gen_dir/{{source_name_part}}.cc",
115 "$target_gen_dir/{{source_name_part}}.h",
119 "--root=" + rebase_path("//", root_build_dir),
120 "--destdir=" + rebase_path(root_gen_dir, root_build_dir),
121 "--namespace=$root_namespace",
123 "--include-rules=$schema_include_rules",
126 if (defined(invoker.visibility)) {
127 # If visibility is restricted, add our own target to it.
128 visibility = invoker.visibility + target_visibility
134 assert(defined(invoker.bundle_name),
135 "\"bundle_name\" must be defined for bundles")
137 uncompiled_sources = []
138 if (defined(invoker.uncompiled_sources)) {
139 uncompiled_sources = invoker.uncompiled_sources
142 bundle_generator_schema_name = target_name + "_bundle_generator_schema"
143 action(bundle_generator_schema_name) {
144 script = compiler_script
145 inputs = compiler_sources + invoker.sources + uncompiled_sources
147 "$target_gen_dir/generated_schemas.cc",
148 "$target_gen_dir/generated_schemas.h",
151 "--root=" + rebase_path("//", root_build_dir),
152 "--destdir=" + rebase_path(root_gen_dir, root_build_dir),
153 "--namespace=$root_namespace",
154 "--bundle-name=" + invoker.bundle_name,
155 "--generator=cpp-bundle-schema",
156 "--include-rules=$schema_include_rules",
157 ] + rebase_path(invoker.sources, root_build_dir) +
158 rebase_path(uncompiled_sources, root_build_dir)
162 if (bundle_registration) {
163 assert(defined(invoker.bundle_name),
164 "\"bundle_name\" must be defined for bundle registrations")
166 uncompiled_sources = []
167 if (defined(invoker.uncompiled_sources)) {
168 uncompiled_sources = invoker.uncompiled_sources
171 assert(defined(invoker.impl_dir),
172 "\"impl_dir\" must be defined for the $target_name template.")
174 # Child directory inside the generated file tree.
175 gen_child_dir = rebase_path(invoker.impl_dir, "//")
177 bundle_generator_registration_name =
178 target_name + "_bundle_generator_registration"
179 action(bundle_generator_registration_name) {
180 script = compiler_script
181 inputs = compiler_sources + invoker.sources + uncompiled_sources
183 "$root_gen_dir/$gen_child_dir/generated_api_registration.cc",
184 "$root_gen_dir/$gen_child_dir/generated_api_registration.h",
187 "--root=" + rebase_path("//", root_build_dir),
188 "--destdir=" + rebase_path(root_gen_dir, root_build_dir),
189 "--namespace=$root_namespace",
190 "--bundle-name=" + invoker.bundle_name,
191 "--generator=cpp-bundle-registration",
192 "--impl-dir=$gen_child_dir",
193 "--include-rules=$schema_include_rules",
194 ] + rebase_path(invoker.sources, root_build_dir) +
195 rebase_path(uncompiled_sources, root_build_dir)
199 # Compute the contents of the library/source set.
200 lib_sources = invoker.sources
203 lib_extra_configs = []
204 if (defined(invoker.configs)) {
205 lib_extra_configs += invoker.configs
209 lib_sources += get_target_outputs(":$schema_generator_name")
210 lib_public_deps += [ ":$schema_generator_name" ]
211 lib_deps += [ "//tools/json_schema_compiler:generated_api_util" ]
212 lib_extra_configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
216 lib_sources += get_target_outputs(":$bundle_generator_schema_name")
217 lib_deps += [ ":$bundle_generator_schema_name" ]
220 if (bundle_registration) {
221 lib_sources += get_target_outputs(":$bundle_generator_registration_name")
222 lib_deps += [ ":$bundle_generator_registration_name" ]
225 if (defined(invoker.deps)) {
226 lib_deps += invoker.deps
229 # Generate either a static library or a source set.
230 if (defined(invoker.generate_static_library) &&
231 invoker.generate_static_library) {
232 static_library(target_name) {
233 sources = lib_sources
235 public_deps = lib_public_deps
236 configs += lib_extra_configs
237 public_configs = [ ":$generated_config_name" ]
239 if (defined(invoker.visibility)) {
240 visibility = invoker.visibility
242 if (defined(invoker.output_name)) {
243 output_name = invoker.output_name
247 source_set(target_name) {
248 sources = lib_sources
250 public_deps = lib_public_deps
251 configs += lib_extra_configs
252 public_configs = [ ":$generated_config_name" ]
254 if (defined(invoker.visibility)) {
255 visibility = invoker.visibility
257 if (defined(invoker.output_name)) {
258 output_name = invoker.output_name