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f917c5e722
- Factor out tools/util.py - Move js/*.py to tools. - Rewrite tools/format.sh in python. - Run lint first in travis.
239 lines
6.5 KiB
Text
239 lines
6.5 KiB
Text
# Copyright 2016 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import("//build/compiled_action.gni")
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declare_args() {
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# Location of flatbuffers source code.
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flatbuffers_source_location = "//third_party/flatbuffers/"
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# Absolute location flatbuffers BUILD.gn file.
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flatbuffers_build_location = "//build_extra/flatbuffers/"
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}
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# Compile a flatbuffer for C++.
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#
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# flatc_out_dir (optional)
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# Specifies the path suffix that output files are generated under. This
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# path will be appended to root_gen_dir.
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#
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# Targets that depend on the flatbuffer target will be able to include
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# the resulting FlatBuffers header with an include like:
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# #include "dir/for/my_flatbuffer/buffer_generated.h"
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# If undefined, this defaults to matchign the input directory for each
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# .fbs file (you should almost always use the default mode).
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#
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# flatc_include_dirs (optional)
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# Specifies the directories which FlatBuffers compiler uses to find
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# included .fbs files in. Almost always should be empty.
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#
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# The list always has an implicit first item corresponding to the root of
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# the source tree. This enables including .fbs files by absolute path.
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#
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# The compiler will try the directories in the order given, and if all
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# fail it will try to load relative to the directory of the schema file
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# being parsed.
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#
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# deps (optional)
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# Additional dependencies.
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#
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# Parameters for compiling the generated code:
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#
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# defines (optional)
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# Defines to supply to the source set that compiles the generated source
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# code.
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#
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# extra_configs (optional)
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# A list of config labels that will be appended to the configs applying
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# to the source set.
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#
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# testonly (optional)
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# Boolean to indicate whether the generated source sets should be labeled
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# as testonly.
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#
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# Example:
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# flatbuffer("mylib") {
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# sources = [
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# "foo.fbs",
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# ]
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# }
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template("flatbuffer") {
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assert(defined(invoker.sources), "Need sources for flatbuffers_library")
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# Don't apply OS-specific sources filtering to the assignments later on.
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# Platform files should have gotten filtered out in the sources assignment
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# when this template was invoked. If they weren't, it was on purpose and
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# this template shouldn't re-apply the filter.
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set_sources_assignment_filter([])
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action_name = "${target_name}_gen"
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source_set_name = target_name
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compiled_action_foreach(action_name) {
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visibility = [ ":$source_set_name" ]
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tool = "$flatbuffers_build_location:flatc"
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sources = invoker.sources
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deps = []
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if (defined(invoker.flatc_out_dir)) {
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out_dir = "$root_gen_dir/" + invoker.flatc_out_dir
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} else {
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out_dir = "{{source_gen_dir}}"
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}
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outputs = [
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"$out_dir/{{source_name_part}}_generated.h",
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]
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args = [
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"-c",
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"--keep-prefix",
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"-o",
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"$out_dir",
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"-I",
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rebase_path("//", root_build_dir),
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]
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if (defined(invoker.flatc_include_dirs)) {
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foreach(include_dir, invoker.flatc_include_dirs) {
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args += [
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"-I",
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rebase_path(include_dir, root_build_dir),
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]
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}
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}
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args += [ "{{source}}" ]
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# The deps may have steps that have to run before running flatc.
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if (defined(invoker.deps)) {
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deps += invoker.deps
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}
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}
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source_set(target_name) {
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forward_variables_from(invoker,
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[
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"visibility",
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"defines",
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])
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sources = get_target_outputs(":$action_name")
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if (defined(invoker.extra_configs)) {
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configs += invoker.extra_configs
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}
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if (defined(invoker.testonly)) {
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testonly = invoker.testonly
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}
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public_configs = [ "$flatbuffers_build_location:flatbuffers_config" ]
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public_deps = [
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# The generated headers reference headers within FlatBuffers, so
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# dependencies must be able to find those headers too.
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flatbuffers_build_location,
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]
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deps = [
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":$action_name",
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]
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# This will link any libraries in the deps (the use of invoker.deps in the
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# action won't link it).
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if (defined(invoker.deps)) {
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deps += invoker.deps
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}
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# Same for public_deps.
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if (defined(invoker.public_deps)) {
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public_deps += invoker.public_deps
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}
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}
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}
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# Compile a flatbuffer to typescript.
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#
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# flatc_include_dirs (optional)
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# Specifies the directories which FlatBuffers compiler uses to find
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# included .fbs files in. Almost always should be empty.
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#
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# The list always has an implicit first item corresponding to the root of
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# the source tree. This enables including .fbs files by absolute path.
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#
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# The compiler will try the directories in the order given, and if all
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# fail it will try to load relative to the directory of the schema file
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# being parsed.
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#
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# deps (optional)
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# Additional dependencies.
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#
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# Example:
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# ts_flatbuffer("foo_ts") {
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# sources = [
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# "foo.fbs",
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# ]
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# }
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template("ts_flatbuffer") {
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assert(defined(invoker.sources), "Need sources for flatbuffers_library")
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# Don't apply OS-specific sources filtering to the assignments later on.
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# Platform files should have gotten filtered out in the sources assignment
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# when this template was invoked. If they weren't, it was on purpose and
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# this template shouldn't re-apply the filter.
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set_sources_assignment_filter([])
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copy_name = target_name + "_copy"
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copy(copy_name) {
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sources = [
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"$flatbuffers_source_location/js/flatbuffers.js",
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]
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outputs = [
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"$target_gen_dir/flatbuffers.js",
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]
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}
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compiled_action_foreach(target_name) {
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tool = "$flatbuffers_build_location:flatc"
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sources = invoker.sources
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deps = [
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":" + copy_name,
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]
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out_dir = target_gen_dir
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outputs = [
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"$out_dir/{{source_name_part}}_generated.ts",
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]
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args = [
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"--ts",
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"--no-fb-import",
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"--gen-mutable",
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"-o",
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rebase_path(out_dir, root_build_dir),
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"-I",
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rebase_path("//", root_build_dir),
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]
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if (defined(invoker.flatc_include_dirs)) {
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foreach(include_dir, invoker.flatc_include_dirs) {
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args += [
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"-I",
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rebase_path(include_dir, root_build_dir),
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]
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}
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}
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args += [ "{{source}}" ]
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# The deps may have steps that have to run before running flatc.
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if (defined(invoker.deps)) {
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deps += invoker.deps
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}
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}
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}
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