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[vm/ffi] Refactor dart:ffi
generator
Refactor to avoid conflicts later with concurrent work on: - https://github.com/dart-lang/sdk/issues/45508 - https://github.com/dart-lang/sdk/issues/44589 Change-Id: I7b7ea2e4ec29115da42b0c196a2952c3cd5d3fa6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/349901 Commit-Queue: Martin Kustermann <kustermann@google.com> Auto-Submit: Daco Harkes <dacoharkes@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
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@ -7,8 +7,6 @@
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// The PointerPointer and PointerStruct extension are written by hand since
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// those are not repetitive.
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// ignore_for_file: unused_local_variable
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import 'dart:io';
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import 'package:args/args.dart';
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@ -31,22 +29,46 @@ const configuration = [
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Config("Bool", "bool", kDoNotEmit, 1, since: Version(2, 15)),
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];
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const arrayVersion = Version(2, 13);
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/// A container to generate the extension for.
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class Container {
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final String name;
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/// Since annotation for the extension.
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final Version? since;
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const Container(this.name, this.since);
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static const pointer = Container(
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'Pointer',
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null,
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);
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static const array = Container(
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'Array',
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Version(2, 13),
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);
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static const values = [
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pointer,
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array,
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];
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}
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//
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// Generator.
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//
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main(List<String> arguments) {
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final args = argParser().parse(arguments);
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Uri path = Uri.parse(args['path']);
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update(Uri.file('sdk/lib/ffi/ffi.dart'), generatePublicExtension);
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update(Uri.file('sdk/lib/_internal/vm/lib/ffi_patch.dart'),
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generatePatchExtension);
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void main(List<String> arguments) {
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update(
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Uri.file('sdk/lib/ffi/ffi.dart'),
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generatePublicExtension,
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);
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update(
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Uri.file('sdk/lib/_internal/vm/lib/ffi_patch.dart'),
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generatePatchExtension,
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);
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}
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void update(Uri fileName, Function(StringBuffer, Config, String) generator) {
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void update(Uri fileName, Function(StringBuffer, Config, Container) generator) {
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final file = File.fromUri(fileName);
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if (!file.existsSync()) {
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print('$fileName does not exist, run from the root of the SDK.');
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@ -70,8 +92,11 @@ void update(Uri fileName, Function(StringBuffer, Config, String) generator) {
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final buffer = StringBuffer();
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buffer.write(split1[0]);
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buffer.write(header);
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configuration.forEach((Config c) => generator(buffer, c, "Pointer"));
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configuration.forEach((Config c) => generator(buffer, c, "Array"));
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for (final container in Container.values) {
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for (final config in configuration) {
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generator(buffer, config, container);
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}
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}
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buffer.write(footer);
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buffer.write(split2[1]);
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@ -99,7 +124,10 @@ void generateHeader(StringBuffer buffer) {
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}
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void generatePublicExtension(
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StringBuffer buffer, Config config, String container) {
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StringBuffer buffer,
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Config config,
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Container container,
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) {
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final nativeType = config.nativeType;
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final dartType = config.dartType;
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final typedListType = config.typedListType;
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@ -166,9 +194,6 @@ void generatePublicExtension(
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truncate = floatTruncate;
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}
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final sizeTimes =
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elementSize != 1 ? '${bracketOr(sizeOf(elementSize))} * ' : '';
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final alignmentDefault = """
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///
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/// The [address] must be ${sizeOf(elementSize)}-byte aligned.
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@ -207,10 +232,11 @@ $alignment external $typedListType asTypedList(
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@Since('3.1') Pointer<Void>? token,
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});
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""";
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if (container == "Pointer") {
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final since = config.since?.sinceAnnotation ?? '';
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buffer.write("""
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final since =
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Version.latest(config.since, container.since)?.sinceAnnotation ?? '';
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switch (container) {
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case Container.pointer:
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buffer.write("""
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/// Extension on [Pointer] specialized for the type argument [$nativeType].
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$since extension ${nativeType}Pointer on Pointer<$nativeType> {
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/// The $property at [address].
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@ -258,10 +284,8 @@ $asTypedList
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}
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""");
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} else {
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final since =
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Version.latest(config.since, arrayVersion)?.sinceAnnotation ?? '';
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buffer.write("""
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case Container.array:
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buffer.write("""
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/// Bounds checking indexing methods on [Array]s of [$nativeType].
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$since extension ${nativeType}Array on Array<$nativeType> {
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external $dartType operator [](int index);
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@ -274,7 +298,10 @@ $since extension ${nativeType}Array on Array<$nativeType> {
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}
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void generatePatchExtension(
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StringBuffer buffer, Config config, String container) {
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StringBuffer buffer,
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Config config,
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Container container,
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) {
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final nativeType = config.nativeType;
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final dartType = config.dartType;
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final typedListType = config.typedListType;
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@ -305,8 +332,9 @@ void generatePatchExtension(
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}
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""";
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if (container == "Pointer") {
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buffer.write("""
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switch (container) {
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case Container.pointer:
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buffer.write("""
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@patch
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extension ${nativeType}Pointer on Pointer<$nativeType> {
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@patch
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@ -329,8 +357,8 @@ $asTypedList
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}
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""");
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} else {
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buffer.write("""
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case Container.array:
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buffer.write("""
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@patch
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extension ${nativeType}Array on Array<$nativeType> {
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@patch
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