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# Copyright 2014 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.
# Defines a static library corresponding to the output of schema compiler tools
# over a set of extensions API schemas (IDL or JSON format.) The library target
# has implicit hard dependencies on all schema files listed by the invoker and
# is itself a hard dependency.
#
# Invocations of this template may use the following variables:
#
# sources [required] A list of schema files to be compiled.
#
# 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' ]
#
# schemas [optional, default = false]
# Boolean indicating if the schema files should be generated.
#
# bundle [optional, default = false]
# Boolean indicating if the schema bundle files should be generated.
#
# bundle_registration [optional, default = false]
# Boolean indicating if the API registration bundle files should be generated.
#
# 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.
#
# uncompiled_sources [optional, only used when bundle = true or
# bundle_registration = true]
# A list of schema files which should not be compiled, but which should still
# be processed for API bundle generation.
#
# deps [optional]
# If any deps are specified they will be inherited by the static library
# target.
#
# The static library target also inherits the visibility and output_name
# of its invoker.
template("json_schema_api") {
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 $target_name template.")
schemas = defined(invoker.schemas) && invoker.schemas
bundle = defined(invoker.bundle) && invoker.bundle
bundle_registration = defined(invoker.bundle_registration) &&
invoker.bundle_registration
schema_include_rules = ""
if (defined(invoker.schema_include_rules)) {
schema_include_rules = invoker.schema_include_rules
}
# Keep a copy of the target_name here since it will be trampled
# in nested targets.
target_visibility = [ ":$target_name" ]
generated_config_name = target_name + "_generated_config"
config(generated_config_name) {
include_dirs = [ target_gen_dir ]
visibility = target_visibility
}
sources = invoker.sources
root_namespace = invoker.root_namespace
compiler_root = "//tools/json_schema_compiler"
compiler_script = "$compiler_root/compiler.py"
compiler_sources = [
"$compiler_root/cc_generator.py",
"$compiler_root/code.py",
"$compiler_root/compiler.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",
"$compiler_root/util_cc_helper.py",
]
if (schemas) {
schema_generator_name = target_name + "_schema_generator"
action_foreach(schema_generator_name) {
script = compiler_script
inputs = compiler_sources
outputs = [
"$target_gen_dir/{{source_name_part}}.cc",
"$target_gen_dir/{{source_name_part}}.h",
]
args = [
"{{source}}",
"--root=" + rebase_path("//", root_build_dir),
"--destdir=" + rebase_path(root_gen_dir, root_build_dir),
"--namespace=$root_namespace",
"--generator=cpp",
"--include-rules=$schema_include_rules" ]
if (defined(invoker.visibility)) {
# If visibility is restricted, add our own target to it.
visibility = [ invoker.visibility, target_visibility ]
}
}
}
if (bundle) {
uncompiled_sources = []
if (defined(invoker.uncompiled_sources)) {
uncompiled_sources = invoker.uncompiled_sources
}
bundle_generator_schema_name = target_name + "_bundle_generator_schema"
action(bundle_generator_schema_name) {
script = compiler_script
inputs = compiler_sources + sources + uncompiled_sources
outputs = [
"$target_gen_dir/generated_schemas.cc",
"$target_gen_dir/generated_schemas.h",
]
args = [
"--root=" + rebase_path("//", root_build_dir),
"--destdir=" + rebase_path(root_gen_dir, root_build_dir),
"--namespace=$root_namespace",
"--generator=cpp-bundle-schema",
"--include-rules=$schema_include_rules" ]
+ rebase_path(sources, root_build_dir)
+ rebase_path(uncompiled_sources, root_build_dir)
}
}
if (bundle_registration) {
uncompiled_sources = []
if (defined(invoker.uncompiled_sources)) {
uncompiled_sources = invoker.uncompiled_sources
}
assert(defined(invoker.impl_dir),
"\"impl_dir\" must be defined for the $target_name template.")
impl_dir = invoker.impl_dir
bundle_generator_registration_name = target_name +
"_bundle_generator_registration"
action(bundle_generator_registration_name) {
script = compiler_script
inputs = compiler_sources + sources + uncompiled_sources
outputs = [
"$root_gen_dir/$impl_dir/generated_api_registration.cc",
"$root_gen_dir/$impl_dir/generated_api_registration.h",
]
args = [
"--root=" + rebase_path("//", root_build_dir),
"--destdir=" + rebase_path(root_gen_dir, root_build_dir),
"--namespace=$root_namespace",
"--generator=cpp-bundle-registration",
"--impl-dir=" + rebase_path(impl_dir, "//"),
"--include-rules=$schema_include_rules" ]
+ rebase_path(sources, root_build_dir)
+ rebase_path(uncompiled_sources, root_build_dir)
}
}
source_set(target_name) {
sources = []
deps = []
public_deps = []
if (schemas) {
sources += get_target_outputs(":$schema_generator_name")
public_deps += [ ":$schema_generator_name" ]
deps += [ "//tools/json_schema_compiler:generated_api_util" ]
}
if (bundle) {
sources += get_target_outputs(":$bundle_generator_schema_name")
deps += [ ":$bundle_generator_schema_name" ]
}
if (bundle_registration) {
sources += get_target_outputs(":$bundle_generator_registration_name")
deps += [ ":$bundle_generator_registration_name" ]
}
if (defined(invoker.deps)) {
deps += invoker.deps
}
public_configs = [ ":$generated_config_name" ]
if (defined(invoker.visibility)) {
visibility = invoker.visibility
}
if (defined(invoker.output_name)) {
output_name = invoker.output_name
}
}
}
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