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 # impl_dir [required if bundle_registration = true, otherwise unused]
35 # The path containing C++ implementations of API functions. This path is
36 # used as the root path when looking for {schema}/{schema}_api.h headers
37 # when generating API registration bundles. Such headers, if found, are
38 # automatically included by the generated code.
40 # uncompiled_sources [optional, only used when bundle = true or
41 # bundle_registration = true]
42 # A list of schema files which should not be compiled, but which should still
43 # be processed for API bundle generation.
46 # If any deps are specified they will be inherited by the static library
49 # generate_static_library [optional, defaults to false]
50 # Produces a static library instead of a source_set.
52 # The generated library target also inherits the visibility and output_name
55 template("json_schema_api") {
56 assert(defined(invoker.sources),
57 "\"sources\" must be defined for the $target_name template.")
58 assert(defined(invoker.root_namespace),
59 "\"root_namespace\" must be defined for the $target_name template.")
61 schemas = defined(invoker.schemas) && invoker.schemas
62 bundle = defined(invoker.bundle) && invoker.bundle
64 defined(invoker.bundle_registration) && invoker.bundle_registration
66 schema_include_rules = ""
67 if (defined(invoker.schema_include_rules)) {
68 schema_include_rules = invoker.schema_include_rules
71 # Keep a copy of the target_name here since it will be trampled
73 target_visibility = [ ":$target_name" ]
75 generated_config_name = target_name + "_generated_config"
76 config(generated_config_name) {
77 include_dirs = [ root_gen_dir ]
78 visibility = target_visibility
81 root_namespace = invoker.root_namespace
83 compiler_root = "//tools/json_schema_compiler"
84 compiler_script = "$compiler_root/compiler.py"
86 "$compiler_root/cc_generator.py",
87 "$compiler_root/code.py",
88 "$compiler_root/compiler.py",
89 "$compiler_root/cpp_generator.py",
90 "$compiler_root/cpp_type_generator.py",
91 "$compiler_root/cpp_util.py",
92 "$compiler_root/h_generator.py",
93 "$compiler_root/idl_schema.py",
94 "$compiler_root/model.py",
95 "$compiler_root/util_cc_helper.py",
99 schema_generator_name = target_name + "_schema_generator"
100 action_foreach(schema_generator_name) {
101 script = compiler_script
102 sources = invoker.sources
103 inputs = compiler_sources
105 "$target_gen_dir/{{source_name_part}}.cc",
106 "$target_gen_dir/{{source_name_part}}.h",
110 "--root=" + rebase_path("//", root_build_dir),
111 "--destdir=" + rebase_path(root_gen_dir, root_build_dir),
112 "--namespace=$root_namespace",
114 "--include-rules=$schema_include_rules",
117 if (defined(invoker.visibility)) {
118 # If visibility is restricted, add our own target to it.
119 visibility = invoker.visibility + target_visibility
125 uncompiled_sources = []
126 if (defined(invoker.uncompiled_sources)) {
127 uncompiled_sources = invoker.uncompiled_sources
130 bundle_generator_schema_name = target_name + "_bundle_generator_schema"
131 action(bundle_generator_schema_name) {
132 script = compiler_script
133 inputs = compiler_sources + invoker.sources + uncompiled_sources
135 "$target_gen_dir/generated_schemas.cc",
136 "$target_gen_dir/generated_schemas.h",
139 "--root=" + rebase_path("//", root_build_dir),
140 "--destdir=" + rebase_path(root_gen_dir, root_build_dir),
141 "--namespace=$root_namespace",
142 "--generator=cpp-bundle-schema",
143 "--include-rules=$schema_include_rules",
144 ] + rebase_path(invoker.sources, root_build_dir) +
145 rebase_path(uncompiled_sources, root_build_dir)
149 if (bundle_registration) {
150 uncompiled_sources = []
151 if (defined(invoker.uncompiled_sources)) {
152 uncompiled_sources = invoker.uncompiled_sources
155 assert(defined(invoker.impl_dir),
156 "\"impl_dir\" must be defined for the $target_name template.")
158 # Child directory inside the generated file tree.
159 gen_child_dir = rebase_path(invoker.impl_dir, "//")
161 bundle_generator_registration_name =
162 target_name + "_bundle_generator_registration"
163 action(bundle_generator_registration_name) {
164 script = compiler_script
165 inputs = compiler_sources + invoker.sources + uncompiled_sources
167 "$root_gen_dir/$gen_child_dir/generated_api_registration.cc",
168 "$root_gen_dir/$gen_child_dir/generated_api_registration.h",
171 "--root=" + rebase_path("//", root_build_dir),
172 "--destdir=" + rebase_path(root_gen_dir, root_build_dir),
173 "--namespace=$root_namespace",
174 "--generator=cpp-bundle-registration",
175 "--impl-dir=$gen_child_dir",
176 "--include-rules=$schema_include_rules",
177 ] + rebase_path(invoker.sources, root_build_dir) +
178 rebase_path(uncompiled_sources, root_build_dir)
182 # Compute the contents of the library/source set.
183 lib_sources = invoker.sources
186 lib_extra_configs = []
189 lib_sources += get_target_outputs(":$schema_generator_name")
190 lib_public_deps += [ ":$schema_generator_name" ]
191 lib_deps += [ "//tools/json_schema_compiler:generated_api_util" ]
192 lib_extra_configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
196 lib_sources += get_target_outputs(":$bundle_generator_schema_name")
197 lib_deps += [ ":$bundle_generator_schema_name" ]
200 if (bundle_registration) {
201 lib_sources += get_target_outputs(":$bundle_generator_registration_name")
202 lib_deps += [ ":$bundle_generator_registration_name" ]
205 if (defined(invoker.deps)) {
206 lib_deps += invoker.deps
209 # Generate either a static library or a source set.
210 if (defined(invoker.generate_static_library) &&
211 invoker.generate_static_library) {
212 static_library(target_name) {
213 sources = lib_sources
215 public_deps = lib_public_deps
216 configs += lib_extra_configs
217 public_configs = [ ":$generated_config_name" ]
219 if (defined(invoker.visibility)) {
220 visibility = invoker.visibility
222 if (defined(invoker.output_name)) {
223 output_name = invoker.output_name
227 source_set(target_name) {
228 sources = lib_sources
230 public_deps = lib_public_deps
231 configs += lib_extra_configs
232 public_configs = [ ":$generated_config_name" ]
234 if (defined(invoker.visibility)) {
235 visibility = invoker.visibility
237 if (defined(invoker.output_name)) {
238 output_name = invoker.output_name