Jens Johansen
41c11716b0
Change-Id: I194987772349f6c673263662346a28560ecb168a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/120645 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Jens Johansen <jensj@google.com>
66 lines
2.0 KiB
Dart
66 lines
2.0 KiB
Dart
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library kernel.round_trip;
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import 'dart:io';
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import 'package:kernel/binary/ast_from_binary.dart';
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import 'package:kernel/binary/ast_to_binary.dart';
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import 'package:kernel/kernel.dart';
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const String usage = '''
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Usage: round_trip.dart FILE.dill [sdk.dill]
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Deserialize and serialize the given component and check that the resulting byte
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sequence is identical to the original.
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''';
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void main(List<String> args) async {
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if (args.length == 1) {
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await testRoundTrip(new File(args[0]).readAsBytesSync(), null);
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} else if (args.length == 2) {
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await testRoundTrip(new File(args[0]).readAsBytesSync(),
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new File(args[1]).readAsBytesSync());
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} else {
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print(usage);
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exit(1);
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}
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}
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void testRoundTrip(List<int> bytes, List<int> sdkBytes) async {
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var component = new Component();
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if (sdkBytes != null) {
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var sdk = new Component(nameRoot: component.root);
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new BinaryBuilder(sdkBytes).readSingleFileComponent(sdk);
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}
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new BinaryBuilder(bytes).readSingleFileComponent(component);
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ByteSink sink = new ByteSink();
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new BinaryPrinter(sink).writeComponentFile(component);
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List<int> writtenBytes = sink.builder.takeBytes();
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if (bytes.length != writtenBytes.length) {
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throw "Byte-lengths differ: ${bytes.length} vs ${writtenBytes.length}";
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}
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for (int i = 0; i < bytes.length; i++) {
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if (bytes[i] != writtenBytes[i]) {
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throw "Byte differs at index $i: "
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"${show(bytes[i])} vs ${show(writtenBytes[i])}";
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}
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}
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print("OK");
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}
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String show(int byte) {
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return '$byte (0x${byte.toRadixString(16).padLeft(2, "0")})';
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}
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/// A [Sink] that directly writes data into a byte builder.
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class ByteSink implements Sink<List<int>> {
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final BytesBuilder builder = new BytesBuilder();
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void add(List<int> data) {
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builder.add(data);
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}
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void close() {}
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}
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