# Copyright 2019 The Flutter Authors. All rights reserved.

# Use of this source code is governed by a BSD-style license that can be

# found in the LICENSE file.

import("//flutter/build/zip_bundle.gni")

import("//flutter/common/config.gni")

import("//flutter/third_party/canvaskit/canvaskit.gni")

import("//third_party/dart/build/dart/dart_action.gni")

declare_args() {

archive_flutter_web_sdk = true

}

dart_sdk_package_config = "//third_party/dart/.dart_tool/package_config.json"

web_ui_sources = exec_script("//third_party/dart/tools/list_dart_files.py",

[

"absolute",

rebase_path("//flutter/lib/web_ui/lib"),

],

"list lines")

web_engine_libraries = [

":skwasm_impl_library",

":skwasm_stub_library",

":web_engine_library",

":web_ui_library",

":web_ui_library_sources",

":web_unicode_library",

":web_locale_keymap_library",

]

group("web_sdk") {

deps = [

":flutter_ddc_modules",

":flutter_platform_dills",

]

if (archive_flutter_web_sdk && !is_fuchsia) {

deps += [ ":flutter_web_sdk_archive" ]

}

}

template("sdk_rewriter") {

ui = defined(invoker.ui) && invoker.ui

if (!ui) {

assert(defined(invoker.library_name), "Must pass 'library_name'")

assert(defined(invoker.api_file), "Must pass 'api_file'")

}

assert(defined(invoker.input_dir), "Must pass 'input_dir'")

assert(defined(invoker.output_dir), "Must pass 'output_dir'")

source_dart_files = exec_script("//third_party/dart/tools/list_dart_files.py",

[

"absolute",

rebase_path(invoker.input_dir),

],

"list lines")

if (defined(invoker.exclude_patterns)) {

filtered_files = filter_exclude(source_dart_files, invoker.exclude_patterns)

source_dart_files = []

source_dart_files = filtered_files

}

prebuilt_dart_action(target_name) {

packages = dart_sdk_package_config

pool = "//flutter/build/dart:dart_pool"

script = "sdk_rewriter.dart"

inputs = source_dart_files + [ "sdk_rewriter.dart" ]

stamp_location = "$target_gen_dir/$target_name.stamp"

outputs = [

stamp_location,

invoker.output_dir,

]

input_dir = rebase_path(invoker.input_dir)

output_dir = rebase_path(invoker.output_dir)

args = [

"--output-dir=$output_dir",

"--input-dir=$input_dir",

"--stamp",

rebase_path(stamp_location, root_build_dir),

]

if (ui) {

args += [ "--ui" ]

} else {

library_name = invoker.library_name

api_file = rebase_path(invoker.api_file)

args += [

"--library-name=$library_name",

"--api-file=$api_file",

]

}

foreach(source_file, source_dart_files) {

path = rebase_path(source_file)

args += [ "--source-file=$path" ]

}

}

}

sdk_rewriter("web_ui_library_sources") {

ui = true

input_dir = "//flutter/lib/web_ui/lib/"

output_dir = "$root_out_dir/flutter_web_sdk/lib/ui/"

# exclude everything in the engine directory, it will be a separate internal library

exclude_patterns = [ rebase_path("//flutter/lib/web_ui/lib/src/*") ]

}

sdk_rewriter("web_engine_library") {

library_name = "engine"

api_file = "//flutter/lib/web_ui/lib/src/engine.dart"

input_dir = "//flutter/lib/web_ui/lib/src/engine/"

output_dir = "$root_out_dir/flutter_web_sdk/lib/_engine/"

# exclude skwasm, it will be a separate internal library

exclude_patterns =

[ rebase_path("//flutter/lib/web_ui/lib/src/engine/skwasm/*") ]

}

sdk_rewriter("skwasm_stub_library") {

library_name = "skwasm_stub"

api_file = "//flutter/lib/web_ui/lib/src/engine/skwasm/skwasm_stub.dart"

input_dir = "//flutter/lib/web_ui/lib/src/engine/skwasm/skwasm_stub/"

output_dir = "$root_out_dir/flutter_web_sdk/lib/_skwasm_stub/"

}

sdk_rewriter("skwasm_impl_library") {

library_name = "skwasm_impl"

api_file = "//flutter/lib/web_ui/lib/src/engine/skwasm/skwasm_impl.dart"

input_dir = "//flutter/lib/web_ui/lib/src/engine/skwasm/skwasm_impl/"

output_dir = "$root_out_dir/flutter_web_sdk/lib/_skwasm_impl/"

}

sdk_rewriter("web_unicode_library") {

library_name = "web_unicode"

api_file = "//flutter/third_party/web_unicode/lib/web_unicode.dart"

input_dir = "//flutter/third_party/web_unicode/lib/web_unicode/"

output_dir = "$root_out_dir/flutter_web_sdk/lib/_web_unicode/"

}

sdk_rewriter("web_locale_keymap_library") {

library_name = "web_locale_keymap"

api_file =

"//flutter/third_party/web_locale_keymap/lib/web_locale_keymap.dart"

input_dir = "//flutter/third_party/web_locale_keymap/lib/web_locale_keymap/"

output_dir = "$root_out_dir/flutter_web_sdk/lib/_web_locale_keymap/"

}

copy("web_ui_library") {

sources = [ "//flutter/web_sdk/libraries.json" ]

outputs = [ "$root_out_dir/flutter_web_sdk/{{source_file_part}}" ]

}

# Compiles a Dart program with dartdevc

#

# Parameters:

#

# inputs (required): The inputs to dartdevc

#

# outputs (required): The files generated by dartdevc

#

# args (required): The arguments to pass to dartdevc

template("_dartdevc") {

if (flutter_prebuilt_dart_sdk) {

action(target_name) {

not_needed(invoker, [ "packages" ])

deps = web_engine_libraries

script = "//build/gn_run_binary.py"

inputs = invoker.inputs

outputs = invoker.outputs

pool = "//flutter/build/dart:dart_pool"

ext = ""

if (is_win) {

ext = ".exe"

}

dart = rebase_path("$host_prebuilt_dart_sdk/bin/dart$ext", root_out_dir)

dartdevc = rebase_path(

"$host_prebuilt_dart_sdk/bin/snapshots/dartdevc.dart.snapshot")

args = [

dart,

dartdevc,

] + invoker.args

}

} else {

prebuilt_dart_action(target_name) {

forward_variables_from(invoker, "*")

deps = web_engine_libraries + [

"//third_party/dart:create_sdk",

"//third_party/dart/pkg:pkg_files_stamp",

"//third_party/dart/utils/dartdevc:dartdevc_files_stamp",

"//third_party/dart/utils/dartdevc:dartdevc_sdk_patch_stamp",

]

script = "//third_party/dart/pkg/dev_compiler/bin/dartdevc.dart"

pool = "//flutter/build/dart:dart_pool"

}

}

}

# Compiles a Dart SDK with the kernel_worker

#

# Parameters:

#

# inputs (required): The inputs to the kernel_worker

#

# outputs (required): The files generated by the kernel_worker

#

# args (required): The arguments to pass to the kernel_worker

template("_kernel_worker") {

if (flutter_prebuilt_dart_sdk) {

action(target_name) {

deps = web_engine_libraries

script = "//build/gn_run_binary.py"

inputs = invoker.inputs

outputs = invoker.outputs

pool = "//flutter/build/dart:dart_pool"

ext = ""

if (is_win) {

ext = ".exe"

}

dart = rebase_path("$host_prebuilt_dart_sdk/bin/dart$ext", root_out_dir)

kernel_worker = rebase_path(

"$host_prebuilt_dart_sdk/bin/snapshots/kernel_worker.dart.snapshot")

args = [

dart,

kernel_worker,

] + invoker.args

}

} else {

prebuilt_dart_action(target_name) {

forward_variables_from(invoker, "*")

deps = web_engine_libraries + [

"//third_party/dart:create_sdk",

"//third_party/dart/pkg:pkg_files_stamp",

"//third_party/dart/utils/dartdevc:dartdevc_files_stamp",

"//third_party/dart/utils/dartdevc:dartdevc_sdk_patch_stamp",

]

script = "//third_party/dart/utils/bazel/kernel_worker.dart"

pool = "//flutter/build/dart:dart_pool"

}

}

}

template("_compile_platform") {

assert(defined(invoker.sound_null_safety),

"sound_null_safety must be defined for $target_name")

assert(defined(invoker.kernel_target),

"kernel_target must be defined for $target_name")

assert(defined(invoker.summary_only),

"summary_only must be defined for $target_name")

assert(defined(invoker.output_dill),

"output_dill must be defined for $target_name")

_kernel_worker(target_name) {

inputs = [ "sdk_rewriter.dart" ] + web_ui_sources

outputs = [ invoker.output_dill ]

if (invoker.sound_null_safety) {

args = [ "--sound-null-safety" ]

} else {

args = [ "--no-sound-null-safety" ]

}

if (invoker.summary_only) {

args += [ "--summary-only" ]

} else {

args += [ "--no-summary-only" ]

}

if (defined(invoker.null_environment) && invoker.null_environment) {

args += [ "--null-environment" ]

}

args += [

"--target",

"${invoker.kernel_target}",

"--packages-file",

"file:///" + rebase_path(dart_sdk_package_config),

"--multi-root-scheme",

"org-dartlang-sdk",

"--multi-root",

"file:///" + rebase_path("$root_out_dir/flutter_web_sdk"),

"--libraries-file",

"org-dartlang-sdk:///libraries.json",

"--output",

rebase_path(invoker.output_dill),

"--source",

"dart:core",

# Additional Flutter web dart libraries

"--source",

"dart:ui",

"--source",

"dart:_engine",

"--source",

"dart:_skwasm_stub",

"--source",

"dart:_web_unicode",

"--source",

"dart:_web_locale_keymap",

]

if (flutter_prebuilt_dart_sdk) {

args += [

"--multi-root",

"file:///" + rebase_path("$host_prebuilt_dart_sdk/.."),

]

} else {

args += [

"--multi-root",

"file:///" + rebase_path("$root_out_dir"),

]

}

}

}

# Compile the unsound DDC SDK's summary.

_compile_platform("flutter_dartdevc_kernel_sdk_outline_unsound") {

sound_null_safety = false

kernel_target = "ddc"

summary_only = true

output_dill = "$root_out_dir/flutter_web_sdk/kernel/ddc_outline.dill"

}

# Compile the sound DDC SDK's summary.

_compile_platform("flutter_dartdevc_kernel_sdk_outline_sound") {

sound_null_safety = true

kernel_target = "ddc"

summary_only = true

output_dill = "$root_out_dir/flutter_web_sdk/kernel/ddc_outline_sound.dill"

}

_compile_platform("flutter_dart2js_kernel_sdk_full_unsound") {

sound_null_safety = false

kernel_target = "dart2js"

summary_only = false

output_dill =

"$root_out_dir/flutter_web_sdk/kernel/dart2js_platform_unsound.dill"

null_environment = true

}

_compile_platform("flutter_dart2js_kernel_sdk_full_sound") {

sound_null_safety = true

kernel_target = "dart2js"

summary_only = false

output_dill = "$root_out_dir/flutter_web_sdk/kernel/dart2js_platform.dill"

null_environment = true

}

# TODO(jacksongardner): remove these once they are no longer used by the flutter tool

copy("flutter_dartdevc_kernel_sdk_outline_unsound_legacy") {

sources = get_target_outputs(":flutter_dartdevc_kernel_sdk_outline_unsound")

outputs = [ "$root_out_dir/flutter_web_sdk/kernel/flutter_ddc_sdk.dill" ]

deps = [ ":flutter_dartdevc_kernel_sdk_outline_unsound" ]

}

copy("flutter_dartdevc_kernel_sdk_outline_sound_legacy") {

sources = get_target_outputs(":flutter_dartdevc_kernel_sdk_outline_sound")

outputs =

[ "$root_out_dir/flutter_web_sdk/kernel/flutter_ddc_sdk_sound.dill" ]

deps = [ ":flutter_dartdevc_kernel_sdk_outline_sound" ]

}

group("flutter_platform_dills") {

public_deps = [

":flutter_dart2js_kernel_sdk_full_sound",

":flutter_dart2js_kernel_sdk_full_unsound",

":flutter_dartdevc_kernel_sdk_outline_sound",

":flutter_dartdevc_kernel_sdk_outline_unsound",

# TODO(jacksongardner): remove these once they are no longer used by the flutter tool

# https://github.com/flutter/flutter/issues/113303

":flutter_dartdevc_kernel_sdk_outline_sound",

":flutter_dartdevc_kernel_sdk_outline_unsound",

]

}

template("_compile_ddc_modules") {

assert(defined(invoker.sound_null_safety),

"sound_null_safety must be defined for $target_name")

assert(defined(invoker.use_skia),

"use_skia must be defined for $target_name")

assert(defined(invoker.auto_detect),

"auto_detect must be defined for $target_name")

_dartdevc(target_name) {

inputs = [ "sdk_rewriter.dart" ] + web_ui_sources

packages = dart_sdk_package_config

name_suffix = ""

if (invoker.use_skia) {

name_suffix += "-canvaskit"

}

if (invoker.auto_detect) {

name_suffix += "-html"

}

if (invoker.sound_null_safety) {

name_suffix += "-sound"

}

amd_js_path =

"$root_out_dir/flutter_web_sdk/kernel/amd${name_suffix}/dart_sdk.js"

legacy_js_path =

"$root_out_dir/flutter_web_sdk/kernel/legacy${name_suffix}/dart_sdk.js"

outputs = [

amd_js_path,

amd_js_path + ".map",

legacy_js_path,

legacy_js_path + ".map",

]

if (invoker.sound_null_safety) {

args = [ "--sound-null-safety" ]

} else {

args = [ "--no-sound-null-safety" ]

}

args += [

"--compile-sdk",

"dart:core",

# Additional Flutter web dart libraries

"dart:ui",

"dart:_engine",

"dart:_skwasm_stub",

"dart:_web_unicode",

"dart:_web_locale_keymap",

"--no-summarize",

"--packages",

"file:///" + rebase_path(dart_sdk_package_config),

"--multi-root-scheme",

"org-dartlang-sdk",

"--multi-root",

"file:///" + rebase_path("$root_out_dir/flutter_web_sdk"),

"--multi-root-output-path",

rebase_path("$root_out_dir/"),

"--libraries-file",

"org-dartlang-sdk:///libraries.json",

"--inline-source-map",

"-DFLUTTER_WEB_USE_SKIA=${invoker.use_skia}",

"-DFLUTTER_WEB_AUTO_DETECT=${invoker.auto_detect}",

"--modules",

"amd",

"-o",

rebase_path(amd_js_path),

"--modules",

"legacy",

"-o",

rebase_path(legacy_js_path),

]

if (flutter_prebuilt_dart_sdk) {

args += [

"--multi-root",

"file:///" + rebase_path("$host_prebuilt_dart_sdk/.."),

]

} else {

args += [

"--multi-root",

"file:///" + rebase_path("$root_out_dir"),

]

}

}

}

# Compiles the unsound html only renderer.

_compile_ddc_modules("flutter_dartdevc_kernel_sdk") {

sound_null_safety = false

use_skia = false

auto_detect = false

}

# Compiles the unsound canvaskit only renderer.

_compile_ddc_modules("flutter_dartdevc_canvaskit_kernel_sdk") {

sound_null_safety = false

use_skia = true

auto_detect = false

}

# Compiles the unsound autodetect renderer.

_compile_ddc_modules("flutter_dartdevc_canvaskit_html_kernel_sdk") {

sound_null_safety = false

use_skia = true

auto_detect = true

}

# Compiles the sound html only renderer.

_compile_ddc_modules("flutter_dartdevc_kernel_sdk_sound") {

sound_null_safety = true

use_skia = false

auto_detect = false

}

# Compiles the sound canvaskit only renderer.

_compile_ddc_modules("flutter_dartdevc_canvaskit_kernel_sdk_sound") {

sound_null_safety = true

use_skia = true

auto_detect = false

}

# Compiles the sound autodetect renderer.

_compile_ddc_modules("flutter_dartdevc_canvaskit_html_kernel_sdk_sound") {

sound_null_safety = true

use_skia = true

auto_detect = true

}

group("flutter_ddc_modules") {

public_deps = [

":flutter_dartdevc_canvaskit_html_kernel_sdk",

":flutter_dartdevc_canvaskit_html_kernel_sdk_sound",

":flutter_dartdevc_canvaskit_kernel_sdk",

":flutter_dartdevc_canvaskit_kernel_sdk_sound",

":flutter_dartdevc_kernel_sdk",

":flutter_dartdevc_kernel_sdk_sound",

# TODO(jacksongardner): remove these once they are no longer used by the flutter tool

# https://github.com/flutter/flutter/issues/113303

":flutter_dartdevc_kernel_sdk_outline_sound_legacy",

":flutter_dartdevc_kernel_sdk_outline_unsound_legacy",

]

}

# Archives Flutter Web SDK

if (!is_fuchsia) {

zip_bundle_from_file("flutter_web_sdk_archive") {

if (target_os == "wasm") {

output = "flutter-web-sdk.zip"

} else if (is_win) {

output = "flutter-web-sdk-${full_target_platform_name}.zip"

} else {

# TODO(jacksongardner): remove this once we stop making platform-specific

# flutter_web_sdk archives.

# https://github.com/flutter/flutter/issues/113303

output = "flutter-web-sdk-${full_platform_name}.zip"

}

deps = [

":flutter_ddc_modules",

":flutter_platform_dills",

] + web_engine_libraries

if (build_canvaskit) {

deps += [ "//flutter/third_party/canvaskit:canvaskit_group" ]

}

if (build_canvaskit_chromium) {

deps += [ "//flutter/third_party/canvaskit:canvaskit_chromium_group" ]

}

# flutter_ddc_modules

sources = get_target_outputs(":flutter_dartdevc_kernel_sdk")

sources += get_target_outputs(":flutter_dartdevc_canvaskit_kernel_sdk")

sources += get_target_outputs(":flutter_dartdevc_canvaskit_html_kernel_sdk")

sources += get_target_outputs(":flutter_dartdevc_kernel_sdk_sound")

sources +=

get_target_outputs(":flutter_dartdevc_canvaskit_kernel_sdk_sound")

sources +=

get_target_outputs(":flutter_dartdevc_canvaskit_html_kernel_sdk_sound")

# flutter_platform_dills

sources +=

get_target_outputs(":flutter_dartdevc_kernel_sdk_outline_unsound")

sources += get_target_outputs(":flutter_dartdevc_kernel_sdk_outline_sound")

sources += get_target_outputs(":flutter_dart2js_kernel_sdk_full_unsound")

sources += get_target_outputs(":flutter_dart2js_kernel_sdk_full_sound")

# TODO(jacksongardner): remove these once they are no longer used by the flutter tool

# https://github.com/flutter/flutter/issues/113303

sources += get_target_outputs(

":flutter_dartdevc_kernel_sdk_outline_unsound_legacy")

sources +=

get_target_outputs(":flutter_dartdevc_kernel_sdk_outline_sound_legacy")

foreach(web_engine_library, web_engine_libraries) {

sources += get_target_outputs(web_engine_library)

}

tmp_files = []

foreach(source, sources) {

tmp_files += [

{

source = rebase_path(source)

destination = rebase_path(source, "$root_build_dir")

},

]

}

if (build_canvaskit) {

tmp_files += [

{

source = rebase_path("$root_out_dir/canvaskit/canvaskit.js")

destination = "flutter_web_sdk/canvaskit/canvaskit.js"

},

{

source = rebase_path("$root_out_dir/canvaskit/canvaskit.wasm")

destination = "flutter_web_sdk/canvaskit/canvaskit.wasm"

},

]

}

if (build_canvaskit_chromium) {

tmp_files += [

{

source = rebase_path("$root_out_dir/canvaskit_chromium/canvaskit.js")

destination = "flutter_web_sdk/canvaskit_chromium/canvaskit.js"

},

{

source =

rebase_path("$root_out_dir/canvaskit_chromium/canvaskit.wasm")

destination = "flutter_web_sdk/canvaskit_chromium/canvaskit.wasm"

},

]

}

files = tmp_files

}

}