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Meta: Add gn build rules for LibWeb
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Andrew Kaster
Andrew Kaster
parent
7b3d0fb002
commit
85c8cd5205
60 changed files with 1966 additions and 0 deletions
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#
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# This file introduces templates for generating JS bindings for Web Platform
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# Objects using IDL files.
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#
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# The public generate_idl_bindings template invokes the binding generator
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# for each IDL file in the input idl_list. It creates two source_set targets
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# for the input target_name, one ending in "_generated" and one ending in
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# "_sources". The "_generated" target is simply the code generator invocation,
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# while the "_sources" target is the actual generated C++ sources files.
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#
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#
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# Parameters:
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# idl_list (required) [string]
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# List of IDL files that are all the same type.
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# Expected to be an absolute path.
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#
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# type (required) string
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# "global", "iterable", "namespace", or "standard"
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#
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# Example use:
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#
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# standard_idl_files = get_path_info(
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# [
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# "//Library/Foo.idl",
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# "//Bar.idl"
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# ],
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# "abspath")
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#
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# generate_idl_bindings("standard_idl_bindings") {
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# idl_list = standard_idl_files
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# type = "standard"
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# }
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#
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# shared_library("Library") {
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# deps = [
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# ":standard_idl_bindings_generated"
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# ":standard_idl_bindings_sources"
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# ]
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# }
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#
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import("//Meta/gn/build/compiled_action.gni")
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# FIXME: rewrite these in terms of action_foreach
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template("_invoke_bindings_generator") {
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# FIXME: Can we update the bindings generator to output the .h and .cpp at the same time?
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assert(defined(invoker.type), "$target_name must have 'type' defined")
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# FIXME: This is pretty gross. Can we make the source file name match the command line argument to the generator more closely?
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# GN can't (and probably shouldn't) siwzzle our strings for us in this way automagically
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assert(defined(invoker.type_filename_fragment),
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"$target_name must have 'type_filename_fragment' defined")
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assert(defined(invoker.name), "$target_name must have 'name' defined")
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assert(defined(invoker.path), "$target_name must have 'path' defined")
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forward_variables_from(invoker,
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[
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"configs",
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"include_dirs",
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"public_configs",
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"testonly",
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"visibility",
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])
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if (!defined(include_dirs)) {
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include_dirs = [ "//Userland/Libraries" ]
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}
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rel_include_dirs = []
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foreach(d, include_dirs) {
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rel_include_dirs += [
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"-i",
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rebase_path(d, root_build_dir),
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]
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}
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name_and_type = string_replace(invoker.name + "_" + invoker.type, "-", "_")
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type = invoker.type
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gen_dir = get_label_info("//Userland/Libraries/LibWeb", "target_gen_dir")
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out_name = get_path_info(invoker.path, "name")
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compiled_action(name_and_type + "_impl") {
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tool = "//Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator"
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inputs = [ invoker.path + ".idl" ]
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outputs = [ gen_dir + "/Bindings/" + out_name +
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invoker.type_filename_fragment + ".cpp" ]
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depfile = outputs[0] + ".d"
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args = [
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"--$type-implementation",
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"-o",
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rebase_path(outputs[0], root_build_dir),
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"--depfile",
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rebase_path(depfile, root_build_dir),
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"--depfile-target",
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rebase_path(outputs[0], root_build_dir),
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] + rel_include_dirs +
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[
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rebase_path(inputs[0], root_build_dir),
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# FIXME: Get caller path from invoker?
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rebase_path("//Userland/Libraries/LibWeb", root_build_dir),
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]
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}
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compiled_action(name_and_type + "_header") {
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tool = "//Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator"
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inputs = [ invoker.path + ".idl" ]
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outputs = [ gen_dir + "/Bindings/" + out_name +
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invoker.type_filename_fragment + ".h" ]
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depfile = outputs[0] + ".d"
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args = [
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"--$type-header",
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"-o",
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rebase_path(outputs[0], root_build_dir),
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"--depfile",
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rebase_path(depfile, root_build_dir),
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"--depfile-target",
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rebase_path(outputs[0], root_build_dir),
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] + rel_include_dirs +
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[
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rebase_path(inputs[0], root_build_dir),
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# FIXME: Get caller path from invoker?
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rebase_path("//Userland/Libraries/LibWeb", root_build_dir),
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]
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}
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source_set("generate_" + name_and_type) {
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deps = [
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":" + name_and_type + "_impl",
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":" + name_and_type + "_header",
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]
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}
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source_set(name_and_type + "_sources") {
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deps = [
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":" + name_and_type + "_impl",
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":" + name_and_type + "_header",
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]
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sources = get_target_outputs(deps[0]) + get_target_outputs(deps[1])
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configs += [ "//Userland/Libraries/LibWeb:configs" ]
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deps += [ "//Userland/Libraries/LibWeb:all_generated" ]
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}
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}
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# FIXME: Deduplicate these templates
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template("_bind_web_namespace") {
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forward_variables_from(invoker,
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[
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"configs",
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"inputs",
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"include_dirs",
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"outputs",
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"public_configs",
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"testonly",
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"visibility",
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])
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interface_name = target_name
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_invoke_bindings_generator(interface_name) {
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type = "namespace"
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type_filename_fragment = "Namespace"
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name = interface_name
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path = invoker.path
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}
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source_set(interface_name + "_sources") {
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deps = [ ":" + interface_name + "_namespace_sources" ]
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}
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source_set("generate_" + interface_name) {
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deps = [ ":generate_" + interface_name + "_namespace" ]
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}
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}
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# FIXME: Deduplicate these templates
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template("_bind_web_iterable_interface") {
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forward_variables_from(invoker,
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[
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"configs",
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"inputs",
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"include_dirs",
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"outputs",
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"public_configs",
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"testonly",
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"visibility",
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])
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interface_name = target_name
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_invoke_bindings_generator(interface_name) {
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type = "prototype"
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type_filename_fragment = "Prototype"
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name = interface_name
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path = invoker.path
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}
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_invoke_bindings_generator(interface_name) {
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type = "constructor"
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type_filename_fragment = "Constructor"
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name = interface_name
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path = invoker.path
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}
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_invoke_bindings_generator(interface_name) {
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type = "iterator-prototype"
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type_filename_fragment = "IteratorPrototype"
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name = interface_name
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path = invoker.path
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}
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source_set(interface_name + "_sources") {
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deps = [
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":" + interface_name + "_prototype_sources",
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":" + interface_name + "_constructor_sources",
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":" + interface_name + "_iterator_prototype_sources",
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]
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}
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source_set("generate_" + interface_name) {
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deps = [
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":generate_" + interface_name + "_prototype",
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":generate_" + interface_name + "_constructor",
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":generate_" + interface_name + "_iterator_prototype",
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]
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}
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}
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# FIXME: Deduplicate these templates
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template("_bind_web_global_interface") {
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forward_variables_from(invoker,
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[
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"configs",
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"inputs",
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"include_dirs",
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"outputs",
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"public_configs",
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"testonly",
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"visibility",
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])
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interface_name = target_name
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_invoke_bindings_generator(interface_name) {
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type = "prototype"
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type_filename_fragment = "Prototype"
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name = interface_name
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path = invoker.path
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}
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_invoke_bindings_generator(interface_name) {
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type = "constructor"
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type_filename_fragment = "Constructor"
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name = interface_name
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path = invoker.path
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}
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_invoke_bindings_generator(interface_name) {
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type = "global-mixin"
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type_filename_fragment = "GlobalMixin"
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name = interface_name
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path = invoker.path
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}
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source_set(interface_name + "_sources") {
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deps = [
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":" + interface_name + "_prototype_sources",
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":" + interface_name + "_constructor_sources",
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":" + interface_name + "_global_mixin_sources",
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]
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}
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source_set("generate_" + interface_name) {
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deps = [
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":generate_" + interface_name + "_prototype",
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":generate_" + interface_name + "_constructor",
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":generate_" + interface_name + "_global_mixin",
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]
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}
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}
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# FIXME: Deduplicate these templates
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template("_bind_web_interface") {
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forward_variables_from(invoker,
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[
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"configs",
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"inputs",
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"include_dirs",
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"outputs",
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"public_configs",
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"testonly",
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"visibility",
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])
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interface_name = target_name
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_invoke_bindings_generator(interface_name) {
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type = "prototype"
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type_filename_fragment = "Prototype"
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name = interface_name
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path = invoker.path
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}
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_invoke_bindings_generator(interface_name) {
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type = "constructor"
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type_filename_fragment = "Constructor"
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name = interface_name
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path = invoker.path
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}
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source_set(interface_name + "_sources") {
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deps = [
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":" + interface_name + "_prototype_sources",
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":" + interface_name + "_constructor_sources",
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]
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}
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source_set("generate_" + interface_name) {
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deps = [
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":generate_" + interface_name + "_prototype",
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":generate_" + interface_name + "_constructor",
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]
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}
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}
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template("generate_idl_bindings") {
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forward_variables_from(invoker,
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[
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"type",
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"idl_list",
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])
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idl_sources = []
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generate_idl = []
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foreach(idl, idl_list) {
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path = get_path_info(rebase_path(idl, "//Userland/Libraries/LibWeb"),
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"dir") + "/" + get_path_info(idl, "name")
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name = string_replace(path, "/", "_")
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if (type == "standard") {
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_bind_web_interface(name) {
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path = path
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}
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} else if (type == "iterable") {
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_bind_web_iterable_interface(name) {
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path = path
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}
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} else if (type == "namespace") {
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_bind_web_namespace(name) {
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path = path
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}
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} else {
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assert(type == "global")
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_bind_web_global_interface(name) {
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path = path
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}
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}
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generate_idl += [ ":generate_" + name ]
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idl_sources += [ ":" + name + "_sources" ]
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}
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source_set(target_name + "_generated") {
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deps = generate_idl
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}
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source_set(target_name + "_sources") {
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deps = idl_sources
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}
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}
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