Johnni Winther
34fb48bb8a
Migrates libraries dependent only on already migrated libraries. Change-Id: I0e85ee8dbc2afce031b92e0009e71c206a55af28 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/179502 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Jens Johansen <jensj@google.com>
2855 lines
100 KiB
Dart
2855 lines
100 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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// @dart = 2.9
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library kernel.ast_from_binary;
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import 'dart:core' hide MapEntry;
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import 'dart:developer';
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import 'dart:convert';
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import 'dart:typed_data';
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import '../ast.dart';
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import '../transformations/flags.dart';
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import 'tag.dart';
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class ParseError {
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String filename;
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int byteIndex;
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String message;
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String path;
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ParseError(this.message, {this.filename, this.byteIndex, this.path});
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String toString() => '$filename:$byteIndex: $message at $path';
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}
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class InvalidKernelVersionError {
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final String filename;
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final int version;
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InvalidKernelVersionError(this.filename, this.version);
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String toString() {
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StringBuffer sb = new StringBuffer();
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sb.write('Unexpected Kernel Format Version ${version} '
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'(expected ${Tag.BinaryFormatVersion})');
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if (filename != null) {
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sb.write(' when reading $filename.');
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}
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return '$sb';
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}
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}
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class InvalidKernelSdkVersionError {
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final String version;
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InvalidKernelSdkVersionError(this.version);
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String toString() {
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return 'Unexpected Kernel SDK Version ${version} '
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'(expected ${expectedSdkHash}).';
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}
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}
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class CompilationModeError {
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final String message;
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CompilationModeError(this.message);
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String toString() => "CompilationModeError[$message]";
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}
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class CanonicalNameError {
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final String message;
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CanonicalNameError(this.message);
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String toString() => 'CanonicalNameError: $message';
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}
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class CanonicalNameSdkError extends CanonicalNameError {
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CanonicalNameSdkError(String message) : super(message);
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String toString() => 'CanonicalNameSdkError: $message';
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}
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class _ComponentIndex {
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static const int numberOfFixedFields = 10;
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int binaryOffsetForSourceTable;
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int binaryOffsetForCanonicalNames;
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int binaryOffsetForMetadataPayloads;
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int binaryOffsetForMetadataMappings;
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int binaryOffsetForStringTable;
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int binaryOffsetForConstantTable;
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int mainMethodReference;
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NonNullableByDefaultCompiledMode compiledMode;
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List<int> libraryOffsets;
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int libraryCount;
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int componentFileSizeInBytes;
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}
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class SubComponentView {
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final List<Library> libraries;
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final int componentStartOffset;
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final int componentFileSize;
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SubComponentView(
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this.libraries, this.componentStartOffset, this.componentFileSize);
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}
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class BinaryBuilder {
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final List<VariableDeclaration> variableStack = <VariableDeclaration>[];
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final List<LabeledStatement> labelStack = <LabeledStatement>[];
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int labelStackBase = 0;
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int switchCaseStackBase = 0;
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final List<SwitchCase> switchCaseStack = <SwitchCase>[];
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final List<TypeParameter> typeParameterStack = <TypeParameter>[];
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final String filename;
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final List<int> _bytes;
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int _byteOffset = 0;
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final List<String> _stringTable = <String>[];
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final List<Uri> _sourceUriTable = <Uri>[];
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Map<int, Constant> _constantTable = <int, Constant>{};
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List<CanonicalName> _linkTable;
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int _transformerFlags = 0;
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Library _currentLibrary;
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int _componentStartOffset = 0;
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NonNullableByDefaultCompiledMode compilationMode;
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// If something goes wrong, this list should indicate what library,
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// class, and member was being built.
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List<String> debugPath = <String>[];
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final bool alwaysCreateNewNamedNodes;
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/// If binary contains metadata section with payloads referencing other nodes
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/// such Kernel binary can't be read lazily because metadata cross references
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/// will not be resolved correctly.
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bool _disableLazyReading = false;
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/// If binary contains metadata section with payloads referencing other nodes
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/// such Kernel binary can't be read lazily because metadata cross references
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/// will not be resolved correctly.
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bool _disableLazyClassReading = false;
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/// Note that [disableLazyClassReading] is incompatible
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/// with checkCanonicalNames on readComponent.
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BinaryBuilder(this._bytes,
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{this.filename,
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bool disableLazyReading = false,
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bool disableLazyClassReading = false,
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bool alwaysCreateNewNamedNodes})
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: _disableLazyReading = disableLazyReading,
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_disableLazyClassReading = disableLazyReading ||
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disableLazyClassReading ||
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// Disable lazy class reading when forcing the creation of new named
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// nodes as it is a logical "relink" to the new version (overwriting
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// the old one) - which doesn't play well with lazy loading class
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// content as old loaded references will then potentially still
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// point to the old content until the new class has been lazy
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// loaded.
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(alwaysCreateNewNamedNodes == true),
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this.alwaysCreateNewNamedNodes = alwaysCreateNewNamedNodes ?? false;
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fail(String message) {
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throw ParseError(message,
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byteIndex: _byteOffset, filename: filename, path: debugPath.join('::'));
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}
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int get byteOffset => _byteOffset;
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int readByte() => _bytes[_byteOffset++];
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int readUInt30() {
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int byte = readByte();
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if (byte & 0x80 == 0) {
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// 0xxxxxxx
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return byte;
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} else if (byte & 0x40 == 0) {
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// 10xxxxxx
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return ((byte & 0x3F) << 8) | readByte();
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} else {
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// 11xxxxxx
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return ((byte & 0x3F) << 24) |
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(readByte() << 16) |
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(readByte() << 8) |
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readByte();
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}
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}
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int readUint32() {
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return (readByte() << 24) |
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(readByte() << 16) |
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(readByte() << 8) |
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readByte();
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}
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final Float64List _doubleBuffer = new Float64List(1);
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Uint8List _doubleBufferUint8;
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double readDouble() {
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_doubleBufferUint8 ??= _doubleBuffer.buffer.asUint8List();
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_doubleBufferUint8[0] = readByte();
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_doubleBufferUint8[1] = readByte();
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_doubleBufferUint8[2] = readByte();
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_doubleBufferUint8[3] = readByte();
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_doubleBufferUint8[4] = readByte();
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_doubleBufferUint8[5] = readByte();
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_doubleBufferUint8[6] = readByte();
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_doubleBufferUint8[7] = readByte();
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return _doubleBuffer[0];
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}
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Uint8List readBytes(int length) {
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Uint8List bytes = new Uint8List(length);
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bytes.setRange(0, bytes.length, _bytes, _byteOffset);
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_byteOffset += bytes.length;
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return bytes;
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}
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Uint8List readByteList() {
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return readBytes(readUInt30());
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}
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String readString() {
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return readStringEntry(readUInt30());
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}
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String readStringEntry(int numBytes) {
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int start = _byteOffset;
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int end = start + numBytes;
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_byteOffset = end;
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for (int i = start; i < end; i++) {
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if (_bytes[i] > 127) {
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return _decodeWtf8(start, end);
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}
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}
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return new String.fromCharCodes(_bytes, start, end);
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}
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String _decodeWtf8(int start, int end) {
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// WTF-8 decoder that trusts its input, meaning that the correctness of
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// the code depends on the bytes from start to end being valid and
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// complete WTF-8. Instead of masking off the control bits from every
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// byte, it simply xor's the byte values together at their appropriate
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// bit shifts, and then xor's out all of the control bits at once.
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Uint16List charCodes = new Uint16List(end - start);
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int i = start;
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int j = 0;
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while (i < end) {
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int byte = _bytes[i++];
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if (byte < 0x80) {
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// ASCII.
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charCodes[j++] = byte;
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} else if (byte < 0xE0) {
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// Two-byte sequence (11-bit unicode value).
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int byte2 = _bytes[i++];
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int value = (byte << 6) ^ byte2 ^ 0x3080;
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assert(value >= 0x80 && value < 0x800);
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charCodes[j++] = value;
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} else if (byte < 0xF0) {
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// Three-byte sequence (16-bit unicode value).
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int byte2 = _bytes[i++];
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int byte3 = _bytes[i++];
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int value = (byte << 12) ^ (byte2 << 6) ^ byte3 ^ 0xE2080;
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assert(value >= 0x800 && value < 0x10000);
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charCodes[j++] = value;
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} else {
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// Four-byte sequence (non-BMP unicode value).
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int byte2 = _bytes[i++];
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int byte3 = _bytes[i++];
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int byte4 = _bytes[i++];
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int value =
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(byte << 18) ^ (byte2 << 12) ^ (byte3 << 6) ^ byte4 ^ 0x3C82080;
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assert(value >= 0x10000 && value < 0x110000);
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charCodes[j++] = 0xD7C0 + (value >> 10);
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charCodes[j++] = 0xDC00 + (value & 0x3FF);
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}
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}
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assert(i == end);
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return new String.fromCharCodes(charCodes, 0, j);
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}
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/// Read metadataMappings section from the binary.
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void _readMetadataMappings(
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Component component, int binaryOffsetForMetadataPayloads) {
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// Default reader ignores metadata section entirely.
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}
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/// Reads metadata for the given [node].
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Node _associateMetadata(Node node, int nodeOffset) {
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// Default reader ignores metadata section entirely.
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return node;
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}
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void readStringTable(List<String> table) {
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// Read the table of end offsets.
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int length = readUInt30();
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List<int> endOffsets = new List<int>.filled(length, null);
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for (int i = 0; i < length; ++i) {
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endOffsets[i] = readUInt30();
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}
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// Read the WTF-8 encoded strings.
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table.length = length;
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int startOffset = 0;
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for (int i = 0; i < length; ++i) {
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table[i] = readStringEntry(endOffsets[i] - startOffset);
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startOffset = endOffsets[i];
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}
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}
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void readConstantTable() {
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final int length = readUInt30();
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final int startOffset = byteOffset;
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for (int i = 0; i < length; i++) {
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_constantTable[byteOffset - startOffset] = readConstantTableEntry();
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}
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}
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Constant readConstantTableEntry() {
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final int constantTag = readByte();
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switch (constantTag) {
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case ConstantTag.NullConstant:
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return new NullConstant();
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case ConstantTag.BoolConstant:
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return new BoolConstant(readByte() == 1);
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case ConstantTag.IntConstant:
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return new IntConstant((readExpression() as IntLiteral).value);
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case ConstantTag.DoubleConstant:
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return new DoubleConstant(readDouble());
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case ConstantTag.StringConstant:
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return new StringConstant(readStringReference());
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case ConstantTag.SymbolConstant:
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Reference libraryReference = readLibraryReference(allowNull: true);
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return new SymbolConstant(readStringReference(), libraryReference);
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case ConstantTag.MapConstant:
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final DartType keyType = readDartType();
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final DartType valueType = readDartType();
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final int length = readUInt30();
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final List<ConstantMapEntry> entries =
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new List<ConstantMapEntry>.filled(length, null, growable: true);
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for (int i = 0; i < length; i++) {
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final Constant key = readConstantReference();
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final Constant value = readConstantReference();
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entries[i] = new ConstantMapEntry(key, value);
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}
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return new MapConstant(keyType, valueType, entries);
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case ConstantTag.ListConstant:
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final DartType typeArgument = readDartType();
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final int length = readUInt30();
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final List<Constant> entries =
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new List<Constant>.filled(length, null, growable: true);
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for (int i = 0; i < length; i++) {
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entries[i] = readConstantReference();
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}
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return new ListConstant(typeArgument, entries);
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case ConstantTag.SetConstant:
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final DartType typeArgument = readDartType();
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final int length = readUInt30();
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final List<Constant> entries =
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new List<Constant>.filled(length, null, growable: true);
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for (int i = 0; i < length; i++) {
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entries[i] = readConstantReference();
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}
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return new SetConstant(typeArgument, entries);
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case ConstantTag.InstanceConstant:
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final Reference classReference = readClassReference();
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final int typeArgumentCount = readUInt30();
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final List<DartType> typeArguments =
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new List<DartType>.filled(typeArgumentCount, null, growable: true);
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for (int i = 0; i < typeArgumentCount; i++) {
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typeArguments[i] = readDartType();
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}
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final int fieldValueCount = readUInt30();
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final Map<Reference, Constant> fieldValues = <Reference, Constant>{};
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for (int i = 0; i < fieldValueCount; i++) {
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final Reference fieldRef =
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readCanonicalNameReference().getReference();
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final Constant constant = readConstantReference();
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fieldValues[fieldRef] = constant;
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}
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return new InstanceConstant(classReference, typeArguments, fieldValues);
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case ConstantTag.PartialInstantiationConstant:
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final TearOffConstant tearOffConstant =
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readConstantReference() as TearOffConstant;
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final int length = readUInt30();
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final List<DartType> types = new List<DartType>.filled(length, null);
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for (int i = 0; i < length; i++) {
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types[i] = readDartType();
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}
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return new PartialInstantiationConstant(tearOffConstant, types);
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case ConstantTag.TearOffConstant:
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final Reference reference = readCanonicalNameReference().getReference();
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return new TearOffConstant.byReference(reference);
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case ConstantTag.TypeLiteralConstant:
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final DartType type = readDartType();
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return new TypeLiteralConstant(type);
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case ConstantTag.UnevaluatedConstant:
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final Expression expression = readExpression();
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return new UnevaluatedConstant(expression);
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}
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throw fail('unexpected constant tag: $constantTag');
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}
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Constant readConstantReference() {
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final int offset = readUInt30();
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Constant constant = _constantTable[offset];
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assert(constant != null);
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return constant;
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}
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Uri readUriReference() {
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return _sourceUriTable[readUInt30()];
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}
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String readStringReference() {
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return _stringTable[readUInt30()];
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}
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List<String> readStringReferenceList() {
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int length = readUInt30();
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List<String> result = new List<String>.filled(length, null, growable: true);
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for (int i = 0; i < length; ++i) {
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result[i] = readStringReference();
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}
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return result;
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}
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String readStringOrNullIfEmpty() {
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String string = readStringReference();
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return string.isEmpty ? null : string;
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}
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bool readAndCheckOptionTag() {
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int tag = readByte();
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if (tag == Tag.Nothing) {
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return false;
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} else if (tag == Tag.Something) {
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return true;
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} else {
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throw fail('unexpected option tag: $tag');
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}
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}
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List<Expression> readAnnotationList(TreeNode parent) {
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int length = readUInt30();
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if (length == 0) return const <Expression>[];
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List<Expression> list =
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new List<Expression>.filled(length, null, growable: true);
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for (int i = 0; i < length; ++i) {
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list[i] = readExpression()..parent = parent;
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}
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return list;
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}
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void _fillTreeNodeList(
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List<TreeNode> list, TreeNode buildObject(int index), TreeNode parent) {
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int length = readUInt30();
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list.length = length;
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for (int i = 0; i < length; ++i) {
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TreeNode object = buildObject(i);
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list[i] = object..parent = parent;
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}
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}
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void _fillNonTreeNodeList(List<Node> list, Node buildObject()) {
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int length = readUInt30();
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list.length = length;
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for (int i = 0; i < length; ++i) {
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Node object = buildObject();
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list[i] = object;
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}
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}
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/// Reads a list of named nodes, reusing any existing objects already in the
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/// linking tree. The nodes are merged into [list], and if reading the library
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/// implementation, the order is corrected.
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///
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/// [readObject] should read the object definition and its canonical name.
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/// If an existing object is bound to the canonical name, the existing object
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/// must be reused and returned.
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void _mergeNamedNodeList(
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List<NamedNode> list, NamedNode readObject(int index), TreeNode parent) {
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// When reading the library implementation, overwrite the whole list
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// with the new one.
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_fillTreeNodeList(list, readObject, parent);
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}
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void readLinkTable(CanonicalName linkRoot) {
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int length = readUInt30();
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_linkTable = new List<CanonicalName>.filled(length, null);
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for (int i = 0; i < length; ++i) {
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int biasedParentIndex = readUInt30();
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String name = readStringReference();
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CanonicalName parent =
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biasedParentIndex == 0 ? linkRoot : _linkTable[biasedParentIndex - 1];
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_linkTable[i] = parent.getChild(name);
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}
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}
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List<int> _indexComponents() {
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_checkEmptyInput();
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int savedByteOffset = _byteOffset;
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_byteOffset = _bytes.length - 4;
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List<int> index = <int>[];
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while (_byteOffset > 0) {
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int size = readUint32();
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if (size <= 0) {
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throw fail("invalid size '$size' reported at offset $byteOffset");
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}
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int start = _byteOffset - size;
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if (start < 0) {
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throw fail("indicated size does not match file size");
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}
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index.add(size);
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_byteOffset = start - 4;
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}
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_byteOffset = savedByteOffset;
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return new List.from(index.reversed);
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}
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void _checkEmptyInput() {
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if (_bytes.length == 0) throw new StateError("Empty input given.");
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}
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void _readAndVerifySdkHash() {
|
|
final String sdkHash = ascii.decode(readBytes(sdkHashLength));
|
|
if (!isValidSdkHash(sdkHash)) {
|
|
throw InvalidKernelSdkVersionError(sdkHash);
|
|
}
|
|
}
|
|
|
|
/// Deserializes a kernel component and stores it in [component].
|
|
///
|
|
/// When linking with a non-empty component, canonical names must have been
|
|
/// computed ahead of time.
|
|
///
|
|
/// The input bytes may contain multiple files concatenated.
|
|
///
|
|
/// If [createView] is true, returns a list of [SubComponentView] - one for
|
|
/// each concatenated dill - each of which knowing where in the combined dill
|
|
/// it came from. If [createView] is false null will be returned.
|
|
List<SubComponentView> readComponent(Component component,
|
|
{bool checkCanonicalNames: false, bool createView: false}) {
|
|
return Timeline.timeSync<List<SubComponentView>>(
|
|
"BinaryBuilder.readComponent", () {
|
|
_checkEmptyInput();
|
|
|
|
// Check that we have a .dill file and it has the correct version before
|
|
// we start decoding it. Otherwise we will fail for cryptic reasons.
|
|
int offset = _byteOffset;
|
|
int magic = readUint32();
|
|
if (magic != Tag.ComponentFile) {
|
|
throw ArgumentError('Not a .dill file (wrong magic number).');
|
|
}
|
|
int version = readUint32();
|
|
if (version != Tag.BinaryFormatVersion) {
|
|
throw InvalidKernelVersionError(filename, version);
|
|
}
|
|
|
|
_readAndVerifySdkHash();
|
|
|
|
_byteOffset = offset;
|
|
List<int> componentFileSizes = _indexComponents();
|
|
if (componentFileSizes.length > 1) {
|
|
_disableLazyReading = true;
|
|
_disableLazyClassReading = true;
|
|
}
|
|
int componentFileIndex = 0;
|
|
List<SubComponentView> views;
|
|
if (createView) {
|
|
views = <SubComponentView>[];
|
|
}
|
|
while (_byteOffset < _bytes.length) {
|
|
SubComponentView view = _readOneComponent(
|
|
component, componentFileSizes[componentFileIndex],
|
|
createView: createView);
|
|
if (createView) {
|
|
views.add(view);
|
|
}
|
|
++componentFileIndex;
|
|
}
|
|
|
|
if (checkCanonicalNames) {
|
|
_checkCanonicalNameChildren(component.root);
|
|
}
|
|
return views;
|
|
});
|
|
}
|
|
|
|
/// Deserializes the source and stores it in [component].
|
|
/// Note that the _coverage_ normally included in the source in the
|
|
/// uri-to-source mapping is _not_ included.
|
|
///
|
|
/// The input bytes may contain multiple files concatenated.
|
|
void readComponentSource(Component component) {
|
|
List<int> componentFileSizes = _indexComponents();
|
|
if (componentFileSizes.length > 1) {
|
|
_disableLazyReading = true;
|
|
_disableLazyClassReading = true;
|
|
}
|
|
int componentFileIndex = 0;
|
|
while (_byteOffset < _bytes.length) {
|
|
_readOneComponentSource(
|
|
component, componentFileSizes[componentFileIndex]);
|
|
++componentFileIndex;
|
|
}
|
|
}
|
|
|
|
/// Reads a single component file from the input and loads it into
|
|
/// [component], overwriting and reusing any existing data in the component.
|
|
///
|
|
/// When linking with a non-empty component, canonical names must have been
|
|
/// computed ahead of time.
|
|
///
|
|
/// This should *only* be used when there is a reason to not allow
|
|
/// concatenated files.
|
|
void readSingleFileComponent(Component component,
|
|
{bool checkCanonicalNames: false}) {
|
|
List<int> componentFileSizes = _indexComponents();
|
|
if (componentFileSizes.isEmpty) throw fail("invalid component data");
|
|
_readOneComponent(component, componentFileSizes[0]);
|
|
if (_byteOffset < _bytes.length) {
|
|
if (_byteOffset + 3 < _bytes.length) {
|
|
int magic = readUint32();
|
|
if (magic == Tag.ComponentFile) {
|
|
throw 'Concatenated component file given when a single component '
|
|
'was expected.';
|
|
}
|
|
}
|
|
throw 'Unrecognized bytes following component data';
|
|
}
|
|
|
|
if (checkCanonicalNames) {
|
|
_checkCanonicalNameChildren(component.root);
|
|
}
|
|
}
|
|
|
|
void _checkCanonicalNameChildren(CanonicalName parent) {
|
|
Iterable<CanonicalName> parentChildren = parent.childrenOrNull;
|
|
if (parentChildren != null) {
|
|
for (CanonicalName child in parentChildren) {
|
|
if (child.name != '@methods' &&
|
|
child.name != '@typedefs' &&
|
|
child.name != '@fields' &&
|
|
child.name != '@=fields' &&
|
|
child.name != '@getters' &&
|
|
child.name != '@setters' &&
|
|
child.name != '@factories' &&
|
|
child.name != '@constructors') {
|
|
bool checkReferenceNode = true;
|
|
if (child.reference == null) {
|
|
// OK for "if private: URI of library" part of "Qualified name"...
|
|
// TODO(johnniwinther): This wrongfully skips checking of variable
|
|
// synthesized by the VM transformations. The kind of canonical
|
|
// name types maybe should be directly available.
|
|
if (parent.parent != null && child.name.contains(':')) {
|
|
// OK then.
|
|
checkReferenceNode = false;
|
|
} else {
|
|
throw buildCanonicalNameError(
|
|
"Null reference (${child.name}) ($child).", child);
|
|
}
|
|
}
|
|
if (checkReferenceNode) {
|
|
if (child.reference.canonicalName != child) {
|
|
throw new CanonicalNameError(
|
|
"Canonical name and reference doesn't agree.");
|
|
}
|
|
if (child.reference.node == null) {
|
|
throw buildCanonicalNameError(
|
|
"Reference is null (${child.name}) ($child).", child);
|
|
}
|
|
}
|
|
}
|
|
_checkCanonicalNameChildren(child);
|
|
}
|
|
}
|
|
}
|
|
|
|
CanonicalNameError buildCanonicalNameError(
|
|
String message, CanonicalName problemNode) {
|
|
// Special-case missing sdk entries as that is probably a change to the
|
|
// platform - that's something we might want to react differently to.
|
|
String libraryUri = problemNode?.nonRootTop?.name ?? "";
|
|
if (libraryUri.startsWith("dart:")) {
|
|
return new CanonicalNameSdkError(message);
|
|
}
|
|
return new CanonicalNameError(message);
|
|
}
|
|
|
|
_ComponentIndex _readComponentIndex(int componentFileSize) {
|
|
int savedByteIndex = _byteOffset;
|
|
|
|
_ComponentIndex result = new _ComponentIndex();
|
|
|
|
// There are two fields: file size and library count.
|
|
_byteOffset = _componentStartOffset + componentFileSize - (2) * 4;
|
|
result.libraryCount = readUint32();
|
|
// Library offsets are used for start and end offsets, so there is one extra
|
|
// element that this the end offset of the last library
|
|
result.libraryOffsets = new List<int>.filled(result.libraryCount + 1, null);
|
|
result.componentFileSizeInBytes = readUint32();
|
|
if (result.componentFileSizeInBytes != componentFileSize) {
|
|
throw "Malformed binary: This component file's component index indicates "
|
|
"that the file size should be $componentFileSize but other component "
|
|
"indexes has indicated that the size should be "
|
|
"${result.componentFileSizeInBytes}.";
|
|
}
|
|
|
|
// Skip to the start of the index.
|
|
_byteOffset -=
|
|
((result.libraryCount + 1) + _ComponentIndex.numberOfFixedFields) * 4;
|
|
|
|
// Now read the component index.
|
|
result.binaryOffsetForSourceTable = _componentStartOffset + readUint32();
|
|
result.binaryOffsetForCanonicalNames = _componentStartOffset + readUint32();
|
|
result.binaryOffsetForMetadataPayloads =
|
|
_componentStartOffset + readUint32();
|
|
result.binaryOffsetForMetadataMappings =
|
|
_componentStartOffset + readUint32();
|
|
result.binaryOffsetForStringTable = _componentStartOffset + readUint32();
|
|
result.binaryOffsetForConstantTable = _componentStartOffset + readUint32();
|
|
result.mainMethodReference = readUint32();
|
|
result.compiledMode = NonNullableByDefaultCompiledMode.values[readUint32()];
|
|
for (int i = 0; i < result.libraryCount + 1; ++i) {
|
|
result.libraryOffsets[i] = _componentStartOffset + readUint32();
|
|
}
|
|
|
|
_byteOffset = savedByteIndex;
|
|
|
|
return result;
|
|
}
|
|
|
|
void _readOneComponentSource(Component component, int componentFileSize) {
|
|
_componentStartOffset = _byteOffset;
|
|
|
|
final int magic = readUint32();
|
|
if (magic != Tag.ComponentFile) {
|
|
throw ArgumentError('Not a .dill file (wrong magic number).');
|
|
}
|
|
|
|
final int formatVersion = readUint32();
|
|
if (formatVersion != Tag.BinaryFormatVersion) {
|
|
throw InvalidKernelVersionError(filename, formatVersion);
|
|
}
|
|
|
|
_readAndVerifySdkHash();
|
|
|
|
// Read component index from the end of this ComponentFiles serialized data.
|
|
_ComponentIndex index = _readComponentIndex(componentFileSize);
|
|
|
|
_byteOffset = index.binaryOffsetForSourceTable;
|
|
Map<Uri, Source> uriToSource = readUriToSource(/* readCoverage = */ false);
|
|
_mergeUriToSource(component.uriToSource, uriToSource);
|
|
|
|
_byteOffset = _componentStartOffset + componentFileSize;
|
|
}
|
|
|
|
SubComponentView _readOneComponent(Component component, int componentFileSize,
|
|
{bool createView: false}) {
|
|
_componentStartOffset = _byteOffset;
|
|
|
|
final int magic = readUint32();
|
|
if (magic != Tag.ComponentFile) {
|
|
throw ArgumentError('Not a .dill file (wrong magic number).');
|
|
}
|
|
|
|
final int formatVersion = readUint32();
|
|
if (formatVersion != Tag.BinaryFormatVersion) {
|
|
throw InvalidKernelVersionError(filename, formatVersion);
|
|
}
|
|
|
|
_readAndVerifySdkHash();
|
|
|
|
List<String> problemsAsJson = readListOfStrings();
|
|
if (problemsAsJson != null) {
|
|
component.problemsAsJson ??= <String>[];
|
|
component.problemsAsJson.addAll(problemsAsJson);
|
|
}
|
|
|
|
// Read component index from the end of this ComponentFiles serialized data.
|
|
_ComponentIndex index = _readComponentIndex(componentFileSize);
|
|
if (compilationMode == null) {
|
|
compilationMode = component.modeRaw;
|
|
}
|
|
compilationMode =
|
|
mergeCompilationModeOrThrow(compilationMode, index.compiledMode);
|
|
|
|
_byteOffset = index.binaryOffsetForStringTable;
|
|
readStringTable(_stringTable);
|
|
|
|
_byteOffset = index.binaryOffsetForCanonicalNames;
|
|
readLinkTable(component.root);
|
|
|
|
// TODO(alexmarkov): reverse metadata mappings and read forwards
|
|
_byteOffset = index.binaryOffsetForStringTable; // Read backwards.
|
|
_readMetadataMappings(component, index.binaryOffsetForMetadataPayloads);
|
|
|
|
_associateMetadata(component, _componentStartOffset);
|
|
|
|
_byteOffset = index.binaryOffsetForSourceTable;
|
|
Map<Uri, Source> uriToSource = readUriToSource(/* readCoverage = */ true);
|
|
_mergeUriToSource(component.uriToSource, uriToSource);
|
|
|
|
_byteOffset = index.binaryOffsetForConstantTable;
|
|
readConstantTable();
|
|
|
|
int numberOfLibraries = index.libraryCount;
|
|
|
|
SubComponentView result;
|
|
if (createView) {
|
|
result = new SubComponentView(
|
|
new List<Library>.filled(numberOfLibraries, null),
|
|
_componentStartOffset,
|
|
componentFileSize);
|
|
}
|
|
|
|
for (int i = 0; i < numberOfLibraries; ++i) {
|
|
_byteOffset = index.libraryOffsets[i];
|
|
Library library = readLibrary(component, index.libraryOffsets[i + 1]);
|
|
if (createView) {
|
|
result.libraries[i] = library;
|
|
}
|
|
}
|
|
|
|
Reference mainMethod =
|
|
getMemberReferenceFromInt(index.mainMethodReference, allowNull: true);
|
|
component.setMainMethodAndMode(mainMethod, false, compilationMode);
|
|
|
|
_byteOffset = _componentStartOffset + componentFileSize;
|
|
|
|
assert(typeParameterStack.isEmpty);
|
|
|
|
return result;
|
|
}
|
|
|
|
/// Read a list of strings. If the list is empty, [null] is returned.
|
|
List<String> readListOfStrings() {
|
|
int length = readUInt30();
|
|
if (length == 0) return null;
|
|
List<String> strings =
|
|
new List<String>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; i++) {
|
|
String s = readString();
|
|
strings[i] = s;
|
|
}
|
|
return strings;
|
|
}
|
|
|
|
/// Read the uri-to-source part of the binary.
|
|
/// Note that this can include coverage, but that it is only included if
|
|
/// [readCoverage] is true, otherwise coverage will be skipped. Note also that
|
|
/// if [readCoverage] is true, references are read and that the link table
|
|
/// thus has to be read first.
|
|
Map<Uri, Source> readUriToSource(bool readCoverage) {
|
|
assert(!readCoverage || (readCoverage && _linkTable != null));
|
|
|
|
int length = readUint32();
|
|
|
|
// Read data.
|
|
_sourceUriTable.length = length;
|
|
Map<Uri, Source> uriToSource = <Uri, Source>{};
|
|
for (int i = 0; i < length; ++i) {
|
|
String uriString = readString();
|
|
Uri uri = uriString.isEmpty ? null : Uri.parse(uriString);
|
|
_sourceUriTable[i] = uri;
|
|
Uint8List sourceCode = readByteList();
|
|
int lineCount = readUInt30();
|
|
List<int> lineStarts = new List<int>.filled(lineCount, null);
|
|
int previousLineStart = 0;
|
|
for (int j = 0; j < lineCount; ++j) {
|
|
int lineStart = readUInt30() + previousLineStart;
|
|
lineStarts[j] = lineStart;
|
|
previousLineStart = lineStart;
|
|
}
|
|
String importUriString = readString();
|
|
Uri importUri =
|
|
importUriString.isEmpty ? null : Uri.parse(importUriString);
|
|
|
|
Set<Reference> coverageConstructors;
|
|
{
|
|
int constructorCoverageCount = readUInt30();
|
|
if (readCoverage) {
|
|
coverageConstructors =
|
|
constructorCoverageCount == 0 ? null : new Set<Reference>();
|
|
for (int j = 0; j < constructorCoverageCount; ++j) {
|
|
coverageConstructors.add(readMemberReference());
|
|
}
|
|
} else {
|
|
for (int j = 0; j < constructorCoverageCount; ++j) {
|
|
skipMemberReference();
|
|
}
|
|
}
|
|
}
|
|
|
|
uriToSource[uri] = new Source(lineStarts, sourceCode, importUri, uri)
|
|
..constantCoverageConstructors = coverageConstructors;
|
|
}
|
|
|
|
// Read index.
|
|
for (int i = 0; i < length; ++i) {
|
|
readUint32();
|
|
}
|
|
return uriToSource;
|
|
}
|
|
|
|
// Add everything from [src] into [dst], but don't overwrite a non-empty
|
|
// source with an empty source. Empty sources may be introduced by
|
|
// synthetic, copy-down implementations such as mixin applications or
|
|
// noSuchMethod forwarders.
|
|
void _mergeUriToSource(Map<Uri, Source> dst, Map<Uri, Source> src) {
|
|
if (dst.isEmpty) {
|
|
// Fast path for the common case of one component per binary.
|
|
dst.addAll(src);
|
|
} else {
|
|
src.forEach((Uri key, Source value) {
|
|
Source originalDestinationSource = dst[key];
|
|
Source mergeFrom;
|
|
Source mergeTo;
|
|
if (value.source.isNotEmpty || originalDestinationSource == null) {
|
|
dst[key] = value;
|
|
mergeFrom = originalDestinationSource;
|
|
mergeTo = value;
|
|
} else {
|
|
mergeFrom = value;
|
|
mergeTo = originalDestinationSource;
|
|
}
|
|
|
|
// TODO(jensj): Find out what the right thing to do is --- it probably
|
|
// depends on what we do if read the same library twice - do we merge or
|
|
// do we overwrite, and should we even support such a thing?
|
|
|
|
// Merge coverage. Note that mergeFrom might be null.
|
|
if (mergeTo.constantCoverageConstructors == null) {
|
|
mergeTo.constantCoverageConstructors =
|
|
mergeFrom?.constantCoverageConstructors;
|
|
} else if (mergeFrom?.constantCoverageConstructors == null) {
|
|
// Nothing to do.
|
|
} else {
|
|
// Bot are non-null: Merge.
|
|
mergeTo.constantCoverageConstructors
|
|
.addAll(mergeFrom.constantCoverageConstructors);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
void skipCanonicalNameReference() {
|
|
readUInt30();
|
|
}
|
|
|
|
CanonicalName readCanonicalNameReference() {
|
|
int index = readUInt30();
|
|
if (index == 0) return null;
|
|
return _linkTable[index - 1];
|
|
}
|
|
|
|
CanonicalName getCanonicalNameReferenceFromInt(int index) {
|
|
if (index == 0) return null;
|
|
return _linkTable[index - 1];
|
|
}
|
|
|
|
Reference readLibraryReference({bool allowNull: false}) {
|
|
CanonicalName canonicalName = readCanonicalNameReference();
|
|
if (canonicalName != null) return canonicalName.getReference();
|
|
if (allowNull) return null;
|
|
throw 'Expected a library reference to be valid but was `null`.';
|
|
}
|
|
|
|
LibraryDependency readLibraryDependencyReference() {
|
|
int index = readUInt30();
|
|
return _currentLibrary.dependencies[index];
|
|
}
|
|
|
|
Reference readClassReference({bool allowNull: false}) {
|
|
CanonicalName name = readCanonicalNameReference();
|
|
if (name == null && !allowNull) {
|
|
throw 'Expected a class reference to be valid but was `null`.';
|
|
}
|
|
return name?.getReference();
|
|
}
|
|
|
|
void skipMemberReference() {
|
|
skipCanonicalNameReference();
|
|
}
|
|
|
|
Reference readMemberReference({bool allowNull: false}) {
|
|
CanonicalName name = readCanonicalNameReference();
|
|
if (name == null && !allowNull) {
|
|
throw 'Expected a member reference to be valid but was `null`.';
|
|
}
|
|
return name?.getReference();
|
|
}
|
|
|
|
Reference readInstanceMemberReference({bool allowNull: false}) {
|
|
Reference reference = readMemberReference(allowNull: allowNull);
|
|
readMemberReference(allowNull: true); // Skip origin
|
|
return reference;
|
|
}
|
|
|
|
Reference getMemberReferenceFromInt(int index, {bool allowNull: false}) {
|
|
CanonicalName name = getCanonicalNameReferenceFromInt(index);
|
|
if (name == null && !allowNull) {
|
|
throw 'Expected a member reference to be valid but was `null`.';
|
|
}
|
|
return name?.getReference();
|
|
}
|
|
|
|
Reference readTypedefReference() {
|
|
return readCanonicalNameReference()?.getReference();
|
|
}
|
|
|
|
Name readName() {
|
|
String text = readStringReference();
|
|
if (text.isNotEmpty && text[0] == '_') {
|
|
return new Name.byReference(text, readLibraryReference());
|
|
} else {
|
|
return new Name(text);
|
|
}
|
|
}
|
|
|
|
Library readLibrary(Component component, int endOffset) {
|
|
// Read index.
|
|
int savedByteOffset = _byteOffset;
|
|
|
|
// There is a field for the procedure count.
|
|
_byteOffset = endOffset - (1) * 4;
|
|
int procedureCount = readUint32();
|
|
List<int> procedureOffsets = new List<int>.filled(procedureCount + 1, null);
|
|
|
|
// There is a field for the procedure count, that number + 1 (for the end)
|
|
// offsets, and then the class count (i.e. procedure count + 3 fields).
|
|
_byteOffset = endOffset - (procedureCount + 3) * 4;
|
|
int classCount = readUint32();
|
|
for (int i = 0; i < procedureCount + 1; i++) {
|
|
procedureOffsets[i] = _componentStartOffset + readUint32();
|
|
}
|
|
List<int> classOffsets = new List<int>.filled(classCount + 1, null);
|
|
|
|
// There is a field for the procedure count, that number + 1 (for the end)
|
|
// offsets, then the class count and that number + 1 (for the end) offsets.
|
|
// (i.e. procedure count + class count + 4 fields).
|
|
_byteOffset = endOffset - (procedureCount + classCount + 4) * 4;
|
|
for (int i = 0; i < classCount + 1; i++) {
|
|
classOffsets[i] = _componentStartOffset + readUint32();
|
|
}
|
|
_byteOffset = savedByteOffset;
|
|
|
|
int flags = readByte();
|
|
|
|
int languageVersionMajor = readUInt30();
|
|
int languageVersionMinor = readUInt30();
|
|
|
|
CanonicalName canonicalName = readCanonicalNameReference();
|
|
Reference reference = canonicalName.getReference();
|
|
Library library = reference.node;
|
|
if (alwaysCreateNewNamedNodes) {
|
|
library = null;
|
|
}
|
|
if (library == null) {
|
|
library =
|
|
new Library(Uri.parse(canonicalName.name), reference: reference);
|
|
component.libraries.add(library..parent = component);
|
|
}
|
|
_currentLibrary = library;
|
|
String name = readStringOrNullIfEmpty();
|
|
|
|
// TODO(jensj): We currently save (almost the same) uri twice.
|
|
Uri fileUri = readUriReference();
|
|
|
|
List<String> problemsAsJson = readListOfStrings();
|
|
|
|
library.flags = flags;
|
|
library.setLanguageVersion(
|
|
new Version(languageVersionMajor, languageVersionMinor));
|
|
library.name = name;
|
|
library.fileUri = fileUri;
|
|
library.problemsAsJson = problemsAsJson;
|
|
|
|
assert(
|
|
mergeCompilationModeOrThrow(
|
|
compilationMode, library.nonNullableByDefaultCompiledMode) ==
|
|
compilationMode,
|
|
"Cannot load ${library.nonNullableByDefaultCompiledMode} "
|
|
"into component with mode $compilationMode");
|
|
|
|
assert(() {
|
|
debugPath.add(library.name ?? library.importUri?.toString() ?? 'library');
|
|
return true;
|
|
}());
|
|
|
|
_fillTreeNodeList(
|
|
library.annotations, (index) => readExpression(), library);
|
|
_readLibraryDependencies(library);
|
|
_readAdditionalExports(library);
|
|
_readLibraryParts(library);
|
|
_mergeNamedNodeList(library.typedefs, (index) => readTypedef(), library);
|
|
|
|
_mergeNamedNodeList(library.classes, (index) {
|
|
_byteOffset = classOffsets[index];
|
|
return readClass(classOffsets[index + 1]);
|
|
}, library);
|
|
_byteOffset = classOffsets.last;
|
|
|
|
_mergeNamedNodeList(library.extensions, (index) {
|
|
return readExtension();
|
|
}, library);
|
|
|
|
_mergeNamedNodeList(library.fields, (index) => readField(), library);
|
|
_mergeNamedNodeList(library.procedures, (index) {
|
|
_byteOffset = procedureOffsets[index];
|
|
return readProcedure(procedureOffsets[index + 1]);
|
|
}, library);
|
|
_byteOffset = procedureOffsets.last;
|
|
|
|
assert(((_) => true)(debugPath.removeLast()));
|
|
_currentLibrary = null;
|
|
return library;
|
|
}
|
|
|
|
void _readLibraryDependencies(Library library) {
|
|
int length = readUInt30();
|
|
library.dependencies.length = length;
|
|
for (int i = 0; i < length; ++i) {
|
|
library.dependencies[i] = readLibraryDependency(library);
|
|
}
|
|
}
|
|
|
|
LibraryDependency readLibraryDependency(Library library) {
|
|
int fileOffset = readOffset();
|
|
int flags = readByte();
|
|
List<Expression> annotations = readExpressionList();
|
|
Reference targetLibrary = readLibraryReference(allowNull: true);
|
|
String prefixName = readStringOrNullIfEmpty();
|
|
List<Combinator> names = readCombinatorList();
|
|
return new LibraryDependency.byReference(
|
|
flags, annotations, targetLibrary, prefixName, names)
|
|
..fileOffset = fileOffset
|
|
..parent = library;
|
|
}
|
|
|
|
void _readAdditionalExports(Library library) {
|
|
int numExportedReference = readUInt30();
|
|
if (numExportedReference != 0) {
|
|
library.additionalExports.clear();
|
|
for (int i = 0; i < numExportedReference; i++) {
|
|
CanonicalName exportedName = readCanonicalNameReference();
|
|
Reference reference = exportedName.getReference();
|
|
library.additionalExports.add(reference);
|
|
}
|
|
}
|
|
}
|
|
|
|
Combinator readCombinator() {
|
|
bool isShow = readByte() == 1;
|
|
List<String> names = readStringReferenceList();
|
|
return new Combinator(isShow, names);
|
|
}
|
|
|
|
List<Combinator> readCombinatorList() {
|
|
int length = readUInt30();
|
|
List<Combinator> result =
|
|
new List<Combinator>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readCombinator();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void _readLibraryParts(Library library) {
|
|
int length = readUInt30();
|
|
library.parts.length = length;
|
|
for (int i = 0; i < length; ++i) {
|
|
library.parts[i] = readLibraryPart(library);
|
|
}
|
|
}
|
|
|
|
LibraryPart readLibraryPart(Library library) {
|
|
List<Expression> annotations = readExpressionList();
|
|
String partUri = readStringReference();
|
|
return new LibraryPart(annotations, partUri)..parent = library;
|
|
}
|
|
|
|
Typedef readTypedef() {
|
|
CanonicalName canonicalName = readCanonicalNameReference();
|
|
Reference reference = canonicalName.getReference();
|
|
Typedef node = reference.node;
|
|
if (alwaysCreateNewNamedNodes) {
|
|
node = null;
|
|
}
|
|
if (node == null) {
|
|
node = new Typedef(null, null, reference: reference);
|
|
}
|
|
Uri fileUri = readUriReference();
|
|
int fileOffset = readOffset();
|
|
String name = readStringReference();
|
|
node.annotations = readAnnotationList(node);
|
|
readAndPushTypeParameterList(node.typeParameters, node);
|
|
DartType type = readDartType();
|
|
readAndPushTypeParameterList(node.typeParametersOfFunctionType, node);
|
|
node.positionalParameters.clear();
|
|
node.positionalParameters.addAll(readAndPushVariableDeclarationList());
|
|
setParents(node.positionalParameters, node);
|
|
node.namedParameters.clear();
|
|
node.namedParameters.addAll(readAndPushVariableDeclarationList());
|
|
setParents(node.namedParameters, node);
|
|
typeParameterStack.length = 0;
|
|
variableStack.length = 0;
|
|
node.fileOffset = fileOffset;
|
|
node.name = name;
|
|
node.fileUri = fileUri;
|
|
node.type = type;
|
|
return node;
|
|
}
|
|
|
|
Class readClass(int endOffset) {
|
|
int tag = readByte();
|
|
assert(tag == Tag.Class);
|
|
|
|
// Read index.
|
|
int savedByteOffset = _byteOffset;
|
|
// There is a field for the procedure count.
|
|
_byteOffset = endOffset - (1) * 4;
|
|
int procedureCount = readUint32();
|
|
List<int> procedureOffsets = new List<int>.filled(procedureCount + 1, null);
|
|
// There is a field for the procedure count, that number + 1 (for the end)
|
|
// offsets (i.e. procedure count + 2 fields).
|
|
_byteOffset = endOffset - (procedureCount + 2) * 4;
|
|
for (int i = 0; i < procedureCount + 1; i++) {
|
|
procedureOffsets[i] = _componentStartOffset + readUint32();
|
|
}
|
|
_byteOffset = savedByteOffset;
|
|
|
|
CanonicalName canonicalName = readCanonicalNameReference();
|
|
Reference reference = canonicalName.getReference();
|
|
Class node = reference.node;
|
|
if (alwaysCreateNewNamedNodes) {
|
|
node = null;
|
|
}
|
|
if (node == null) {
|
|
node = new Class(reference: reference)..dirty = false;
|
|
}
|
|
|
|
Uri fileUri = readUriReference();
|
|
node.startFileOffset = readOffset();
|
|
node.fileOffset = readOffset();
|
|
node.fileEndOffset = readOffset();
|
|
int flags = readByte();
|
|
node.flags = flags;
|
|
String name = readStringOrNullIfEmpty();
|
|
List<Expression> annotations = readAnnotationList(node);
|
|
assert(() {
|
|
debugPath.add(node.name ?? 'normal-class');
|
|
return true;
|
|
}());
|
|
|
|
assert(typeParameterStack.length == 0);
|
|
|
|
readAndPushTypeParameterList(node.typeParameters, node);
|
|
Supertype supertype = readSupertypeOption();
|
|
Supertype mixedInType = readSupertypeOption();
|
|
_fillNonTreeNodeList(node.implementedTypes, readSupertype);
|
|
if (_disableLazyClassReading) {
|
|
readClassPartialContent(node, procedureOffsets);
|
|
} else {
|
|
_setLazyLoadClass(node, procedureOffsets);
|
|
}
|
|
|
|
typeParameterStack.length = 0;
|
|
assert(debugPath.removeLast() != null);
|
|
node.name = name;
|
|
node.fileUri = fileUri;
|
|
node.annotations = annotations;
|
|
node.supertype = supertype;
|
|
node.mixedInType = mixedInType;
|
|
|
|
_byteOffset = endOffset;
|
|
|
|
return node;
|
|
}
|
|
|
|
Extension readExtension() {
|
|
int tag = readByte();
|
|
assert(tag == Tag.Extension);
|
|
|
|
CanonicalName canonicalName = readCanonicalNameReference();
|
|
Reference reference = canonicalName.getReference();
|
|
Extension node = reference.node;
|
|
if (alwaysCreateNewNamedNodes) {
|
|
node = null;
|
|
}
|
|
if (node == null) {
|
|
node = new Extension(reference: reference);
|
|
}
|
|
|
|
String name = readStringOrNullIfEmpty();
|
|
assert(() {
|
|
debugPath.add(node.name ?? 'extension');
|
|
return true;
|
|
}());
|
|
|
|
Uri fileUri = readUriReference();
|
|
node.fileOffset = readOffset();
|
|
|
|
readAndPushTypeParameterList(node.typeParameters, node);
|
|
DartType onType = readDartType();
|
|
typeParameterStack.length = 0;
|
|
|
|
node.name = name;
|
|
node.fileUri = fileUri;
|
|
node.onType = onType;
|
|
|
|
int length = readUInt30();
|
|
node.members.length = length;
|
|
for (int i = 0; i < length; i++) {
|
|
Name name = readName();
|
|
int kind = readByte();
|
|
int flags = readByte();
|
|
CanonicalName canonicalName = readCanonicalNameReference();
|
|
node.members[i] = new ExtensionMemberDescriptor(
|
|
name: name,
|
|
kind: ExtensionMemberKind.values[kind],
|
|
member: canonicalName.getReference())
|
|
..flags = flags;
|
|
}
|
|
return node;
|
|
}
|
|
|
|
/// Reads the partial content of a class, namely fields, procedures,
|
|
/// constructors and redirecting factory constructors.
|
|
void readClassPartialContent(Class node, List<int> procedureOffsets) {
|
|
_mergeNamedNodeList(node.fieldsInternal, (index) => readField(), node);
|
|
_mergeNamedNodeList(
|
|
node.constructorsInternal, (index) => readConstructor(), node);
|
|
|
|
_mergeNamedNodeList(node.proceduresInternal, (index) {
|
|
_byteOffset = procedureOffsets[index];
|
|
return readProcedure(procedureOffsets[index + 1]);
|
|
}, node);
|
|
_byteOffset = procedureOffsets.last;
|
|
_mergeNamedNodeList(node.redirectingFactoryConstructorsInternal,
|
|
(index) => readRedirectingFactoryConstructor(), node);
|
|
}
|
|
|
|
/// Set the lazyBuilder on the class so it can be lazy loaded in the future.
|
|
void _setLazyLoadClass(Class node, List<int> procedureOffsets) {
|
|
final int savedByteOffset = _byteOffset;
|
|
final int componentStartOffset = _componentStartOffset;
|
|
final Library currentLibrary = _currentLibrary;
|
|
node.lazyBuilder = () {
|
|
_byteOffset = savedByteOffset;
|
|
_currentLibrary = currentLibrary;
|
|
assert(typeParameterStack.isEmpty);
|
|
_componentStartOffset = componentStartOffset;
|
|
typeParameterStack.addAll(node.typeParameters);
|
|
|
|
readClassPartialContent(node, procedureOffsets);
|
|
typeParameterStack.length = 0;
|
|
};
|
|
}
|
|
|
|
int getAndResetTransformerFlags() {
|
|
int flags = _transformerFlags;
|
|
_transformerFlags = 0;
|
|
return flags;
|
|
}
|
|
|
|
/// Adds the given flag to the current [Member.transformerFlags].
|
|
void addTransformerFlag(int flags) {
|
|
_transformerFlags |= flags;
|
|
}
|
|
|
|
Field readField() {
|
|
int tag = readByte();
|
|
assert(tag == Tag.Field);
|
|
CanonicalName getterCanonicalName = readCanonicalNameReference();
|
|
Reference getterReference = getterCanonicalName.getReference();
|
|
CanonicalName setterCanonicalName = readCanonicalNameReference();
|
|
Reference setterReference = setterCanonicalName?.getReference();
|
|
Field node = getterReference.node;
|
|
if (alwaysCreateNewNamedNodes) {
|
|
node = null;
|
|
}
|
|
if (node == null) {
|
|
if (setterReference != null) {
|
|
node = new Field.mutable(null,
|
|
getterReference: getterReference, setterReference: setterReference);
|
|
} else {
|
|
node = new Field.immutable(null, getterReference: getterReference);
|
|
}
|
|
}
|
|
Uri fileUri = readUriReference();
|
|
int fileOffset = readOffset();
|
|
int fileEndOffset = readOffset();
|
|
int flags = readUInt30();
|
|
Name name = readName();
|
|
List<Expression> annotations = readAnnotationList(node);
|
|
assert(() {
|
|
debugPath.add(node.name?.text ?? 'field');
|
|
return true;
|
|
}());
|
|
DartType type = readDartType();
|
|
Expression initializer = readExpressionOption();
|
|
int transformerFlags = getAndResetTransformerFlags();
|
|
assert(((_) => true)(debugPath.removeLast()));
|
|
node.fileOffset = fileOffset;
|
|
node.fileEndOffset = fileEndOffset;
|
|
node.flags = flags;
|
|
node.name = name;
|
|
node.fileUri = fileUri;
|
|
node.annotations = annotations;
|
|
node.type = type;
|
|
node.initializer = initializer;
|
|
node.initializer?.parent = node;
|
|
node.transformerFlags = transformerFlags;
|
|
return node;
|
|
}
|
|
|
|
Constructor readConstructor() {
|
|
int tag = readByte();
|
|
assert(tag == Tag.Constructor);
|
|
CanonicalName canonicalName = readCanonicalNameReference();
|
|
Reference reference = canonicalName.getReference();
|
|
Constructor node = reference.node;
|
|
if (alwaysCreateNewNamedNodes) {
|
|
node = null;
|
|
}
|
|
if (node == null) {
|
|
node = new Constructor(null, reference: reference);
|
|
}
|
|
Uri fileUri = readUriReference();
|
|
int startFileOffset = readOffset();
|
|
int fileOffset = readOffset();
|
|
int fileEndOffset = readOffset();
|
|
int flags = readByte();
|
|
Name name = readName();
|
|
List<Expression> annotations = readAnnotationList(node);
|
|
assert(() {
|
|
debugPath.add(node.name?.text ?? 'constructor');
|
|
return true;
|
|
}());
|
|
FunctionNode function = readFunctionNode();
|
|
pushVariableDeclarations(function.positionalParameters);
|
|
pushVariableDeclarations(function.namedParameters);
|
|
_fillTreeNodeList(node.initializers, (index) => readInitializer(), node);
|
|
variableStack.length = 0;
|
|
int transformerFlags = getAndResetTransformerFlags();
|
|
assert(((_) => true)(debugPath.removeLast()));
|
|
node.startFileOffset = startFileOffset;
|
|
node.fileOffset = fileOffset;
|
|
node.fileEndOffset = fileEndOffset;
|
|
node.flags = flags;
|
|
node.name = name;
|
|
node.fileUri = fileUri;
|
|
node.annotations = annotations;
|
|
node.function = function..parent = node;
|
|
node.transformerFlags = transformerFlags;
|
|
return node;
|
|
}
|
|
|
|
Procedure readProcedure(int endOffset) {
|
|
int tag = readByte();
|
|
assert(tag == Tag.Procedure);
|
|
CanonicalName canonicalName = readCanonicalNameReference();
|
|
Reference reference = canonicalName.getReference();
|
|
Procedure node = reference.node;
|
|
if (alwaysCreateNewNamedNodes) {
|
|
node = null;
|
|
}
|
|
Uri fileUri = readUriReference();
|
|
int startFileOffset = readOffset();
|
|
int fileOffset = readOffset();
|
|
int fileEndOffset = readOffset();
|
|
int kindIndex = readByte();
|
|
ProcedureKind kind = ProcedureKind.values[kindIndex];
|
|
ProcedureStubKind stubKind = ProcedureStubKind.values[readByte()];
|
|
if (node == null) {
|
|
node = new Procedure(null, kind, null, reference: reference);
|
|
} else {
|
|
assert(node.kind == kind);
|
|
}
|
|
int flags = readUInt30();
|
|
Name name = readName();
|
|
List<Expression> annotations = readAnnotationList(node);
|
|
assert(() {
|
|
debugPath.add(node.name?.text ?? 'procedure');
|
|
return true;
|
|
}());
|
|
int functionNodeSize = endOffset - _byteOffset;
|
|
// Read small factories up front. Postpone everything else.
|
|
bool readFunctionNodeNow =
|
|
(kind == ProcedureKind.Factory && functionNodeSize <= 50) ||
|
|
_disableLazyReading;
|
|
Reference stubTargetReference = readMemberReference(allowNull: true);
|
|
FunctionNode function =
|
|
readFunctionNodeOption(!readFunctionNodeNow, endOffset);
|
|
int transformerFlags = getAndResetTransformerFlags();
|
|
assert(((_) => true)(debugPath.removeLast()));
|
|
node.startFileOffset = startFileOffset;
|
|
node.fileOffset = fileOffset;
|
|
node.fileEndOffset = fileEndOffset;
|
|
node.flags = flags;
|
|
node.name = name;
|
|
node.fileUri = fileUri;
|
|
node.annotations = annotations;
|
|
node.function = function;
|
|
function?.parent = node;
|
|
node.setTransformerFlagsWithoutLazyLoading(transformerFlags);
|
|
node.stubKind = stubKind;
|
|
node.stubTargetReference = stubTargetReference;
|
|
|
|
assert((node.stubKind == ProcedureStubKind.ConcreteForwardingStub &&
|
|
node.stubTargetReference != null) ||
|
|
!(node.isForwardingStub && node.function.body != null));
|
|
assert(!(node.isMemberSignature && node.stubTargetReference == null),
|
|
"No member signature origin for member signature $node.");
|
|
return node;
|
|
}
|
|
|
|
RedirectingFactoryConstructor readRedirectingFactoryConstructor() {
|
|
int tag = readByte();
|
|
assert(tag == Tag.RedirectingFactoryConstructor);
|
|
CanonicalName canonicalName = readCanonicalNameReference();
|
|
Reference reference = canonicalName.getReference();
|
|
RedirectingFactoryConstructor node = reference.node;
|
|
if (alwaysCreateNewNamedNodes) {
|
|
node = null;
|
|
}
|
|
if (node == null) {
|
|
node = new RedirectingFactoryConstructor(null, reference: reference);
|
|
}
|
|
Uri fileUri = readUriReference();
|
|
int fileOffset = readOffset();
|
|
int fileEndOffset = readOffset();
|
|
int flags = readByte();
|
|
Name name = readName();
|
|
List<Expression> annotations = readAnnotationList(node);
|
|
assert(() {
|
|
debugPath.add(node.name?.text ?? 'redirecting-factory-constructor');
|
|
return true;
|
|
}());
|
|
Reference targetReference = readMemberReference();
|
|
List<DartType> typeArguments = readDartTypeList();
|
|
int typeParameterStackHeight = typeParameterStack.length;
|
|
List<TypeParameter> typeParameters = readAndPushTypeParameterList();
|
|
readUInt30(); // Total parameter count.
|
|
int requiredParameterCount = readUInt30();
|
|
int variableStackHeight = variableStack.length;
|
|
List<VariableDeclaration> positional = readAndPushVariableDeclarationList();
|
|
List<VariableDeclaration> named = readAndPushVariableDeclarationList();
|
|
variableStack.length = variableStackHeight;
|
|
typeParameterStack.length = typeParameterStackHeight;
|
|
debugPath.removeLast();
|
|
node.fileOffset = fileOffset;
|
|
node.fileEndOffset = fileEndOffset;
|
|
node.flags = flags;
|
|
node.name = name;
|
|
node.fileUri = fileUri;
|
|
node.annotations = annotations;
|
|
node.targetReference = targetReference;
|
|
node.typeArguments.addAll(typeArguments);
|
|
node.typeParameters = typeParameters;
|
|
node.requiredParameterCount = requiredParameterCount;
|
|
node.positionalParameters = positional;
|
|
node.namedParameters = named;
|
|
return node;
|
|
}
|
|
|
|
Initializer readInitializer() {
|
|
int tag = readByte();
|
|
bool isSynthetic = readByte() == 1;
|
|
switch (tag) {
|
|
case Tag.InvalidInitializer:
|
|
return new InvalidInitializer();
|
|
case Tag.FieldInitializer:
|
|
Reference reference = readMemberReference();
|
|
Expression value = readExpression();
|
|
return new FieldInitializer.byReference(reference, value)
|
|
..isSynthetic = isSynthetic;
|
|
case Tag.SuperInitializer:
|
|
int offset = readOffset();
|
|
Reference reference = readMemberReference();
|
|
Arguments arguments = readArguments();
|
|
return new SuperInitializer.byReference(reference, arguments)
|
|
..isSynthetic = isSynthetic
|
|
..fileOffset = offset;
|
|
case Tag.RedirectingInitializer:
|
|
int offset = readOffset();
|
|
return new RedirectingInitializer.byReference(
|
|
readMemberReference(), readArguments())
|
|
..fileOffset = offset;
|
|
case Tag.LocalInitializer:
|
|
return new LocalInitializer(readAndPushVariableDeclaration());
|
|
case Tag.AssertInitializer:
|
|
return new AssertInitializer(readStatement());
|
|
default:
|
|
throw fail('unexpected initializer tag: $tag');
|
|
}
|
|
}
|
|
|
|
FunctionNode readFunctionNodeOption(bool lazyLoadBody, int outerEndOffset) {
|
|
return readAndCheckOptionTag()
|
|
? readFunctionNode(
|
|
lazyLoadBody: lazyLoadBody, outerEndOffset: outerEndOffset)
|
|
: null;
|
|
}
|
|
|
|
FunctionNode readFunctionNode(
|
|
{bool lazyLoadBody: false, int outerEndOffset: -1}) {
|
|
int tag = readByte();
|
|
assert(tag == Tag.FunctionNode);
|
|
int offset = readOffset();
|
|
int endOffset = readOffset();
|
|
AsyncMarker asyncMarker = AsyncMarker.values[readByte()];
|
|
AsyncMarker dartAsyncMarker = AsyncMarker.values[readByte()];
|
|
int typeParameterStackHeight = typeParameterStack.length;
|
|
List<TypeParameter> typeParameters = readAndPushTypeParameterList();
|
|
readUInt30(); // total parameter count.
|
|
int requiredParameterCount = readUInt30();
|
|
int variableStackHeight = variableStack.length;
|
|
List<VariableDeclaration> positional = readAndPushVariableDeclarationList();
|
|
List<VariableDeclaration> named = readAndPushVariableDeclarationList();
|
|
DartType returnType = readDartType();
|
|
int oldLabelStackBase = labelStackBase;
|
|
int oldSwitchCaseStackBase = switchCaseStackBase;
|
|
|
|
if (lazyLoadBody && outerEndOffset > 0) {
|
|
lazyLoadBody = outerEndOffset - _byteOffset >
|
|
2; // e.g. outline has Tag.Something and Tag.EmptyStatement
|
|
}
|
|
|
|
Statement body;
|
|
if (!lazyLoadBody) {
|
|
labelStackBase = labelStack.length;
|
|
switchCaseStackBase = switchCaseStack.length;
|
|
body = readStatementOption();
|
|
}
|
|
|
|
FunctionNode result = new FunctionNode(body,
|
|
typeParameters: typeParameters,
|
|
requiredParameterCount: requiredParameterCount,
|
|
positionalParameters: positional,
|
|
namedParameters: named,
|
|
returnType: returnType,
|
|
asyncMarker: asyncMarker,
|
|
dartAsyncMarker: dartAsyncMarker)
|
|
..fileOffset = offset
|
|
..fileEndOffset = endOffset;
|
|
|
|
if (lazyLoadBody) {
|
|
_setLazyLoadFunction(result, oldLabelStackBase, oldSwitchCaseStackBase,
|
|
variableStackHeight);
|
|
}
|
|
|
|
labelStackBase = oldLabelStackBase;
|
|
switchCaseStackBase = oldSwitchCaseStackBase;
|
|
variableStack.length = variableStackHeight;
|
|
typeParameterStack.length = typeParameterStackHeight;
|
|
|
|
return result;
|
|
}
|
|
|
|
void _setLazyLoadFunction(FunctionNode result, int oldLabelStackBase,
|
|
int oldSwitchCaseStackBase, int variableStackHeight) {
|
|
final int savedByteOffset = _byteOffset;
|
|
final int componentStartOffset = _componentStartOffset;
|
|
final List<TypeParameter> typeParameters = typeParameterStack.toList();
|
|
final List<VariableDeclaration> variables = variableStack.toList();
|
|
final Library currentLibrary = _currentLibrary;
|
|
result.lazyBuilder = () {
|
|
_byteOffset = savedByteOffset;
|
|
_currentLibrary = currentLibrary;
|
|
typeParameterStack.clear();
|
|
typeParameterStack.addAll(typeParameters);
|
|
variableStack.clear();
|
|
variableStack.addAll(variables);
|
|
_componentStartOffset = componentStartOffset;
|
|
|
|
result.body = readStatementOption();
|
|
result.body?.parent = result;
|
|
labelStackBase = oldLabelStackBase;
|
|
switchCaseStackBase = oldSwitchCaseStackBase;
|
|
variableStack.length = variableStackHeight;
|
|
typeParameterStack.clear();
|
|
if (result.parent is Procedure) {
|
|
Procedure parent = result.parent;
|
|
parent.transformerFlags |= getAndResetTransformerFlags();
|
|
}
|
|
};
|
|
}
|
|
|
|
void pushVariableDeclaration(VariableDeclaration variable) {
|
|
variableStack.add(variable);
|
|
}
|
|
|
|
void pushVariableDeclarations(List<VariableDeclaration> variables) {
|
|
variableStack.addAll(variables);
|
|
}
|
|
|
|
VariableDeclaration readVariableReference() {
|
|
int index = readUInt30();
|
|
if (index >= variableStack.length) {
|
|
throw fail('Unexpected variable index: $index. '
|
|
'Current variable count: ${variableStack.length}.');
|
|
}
|
|
return variableStack[index];
|
|
}
|
|
|
|
LogicalExpressionOperator logicalOperatorToEnum(int index) {
|
|
switch (index) {
|
|
case 0:
|
|
return LogicalExpressionOperator.AND;
|
|
case 1:
|
|
return LogicalExpressionOperator.OR;
|
|
default:
|
|
throw fail('unexpected logical operator index: $index');
|
|
}
|
|
}
|
|
|
|
List<Expression> readExpressionList() {
|
|
int length = readUInt30();
|
|
List<Expression> result =
|
|
new List<Expression>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readExpression();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Expression readExpressionOption() {
|
|
return readAndCheckOptionTag() ? readExpression() : null;
|
|
}
|
|
|
|
Expression readExpression() {
|
|
int tagByte = readByte();
|
|
int tag = tagByte & Tag.SpecializedTagHighBit == 0
|
|
? tagByte
|
|
: (tagByte & Tag.SpecializedTagMask);
|
|
switch (tag) {
|
|
case Tag.LoadLibrary:
|
|
return new LoadLibrary(readLibraryDependencyReference());
|
|
case Tag.CheckLibraryIsLoaded:
|
|
return new CheckLibraryIsLoaded(readLibraryDependencyReference());
|
|
case Tag.InvalidExpression:
|
|
int offset = readOffset();
|
|
return new InvalidExpression(readStringOrNullIfEmpty())
|
|
..fileOffset = offset;
|
|
case Tag.VariableGet:
|
|
int offset = readOffset();
|
|
readUInt30(); // offset of the variable declaration in the binary.
|
|
return new VariableGet(readVariableReference(), readDartTypeOption())
|
|
..fileOffset = offset;
|
|
case Tag.SpecializedVariableGet:
|
|
int index = tagByte & Tag.SpecializedPayloadMask;
|
|
int offset = readOffset();
|
|
readUInt30(); // offset of the variable declaration in the binary.
|
|
return new VariableGet(variableStack[index])..fileOffset = offset;
|
|
case Tag.VariableSet:
|
|
int offset = readOffset();
|
|
readUInt30(); // offset of the variable declaration in the binary.
|
|
return new VariableSet(readVariableReference(), readExpression())
|
|
..fileOffset = offset;
|
|
case Tag.SpecializedVariableSet:
|
|
int index = tagByte & Tag.SpecializedPayloadMask;
|
|
int offset = readOffset();
|
|
readUInt30(); // offset of the variable declaration in the binary.
|
|
return new VariableSet(variableStack[index], readExpression())
|
|
..fileOffset = offset;
|
|
case Tag.PropertyGet:
|
|
int offset = readOffset();
|
|
return new PropertyGet.byReference(readExpression(), readName(),
|
|
readInstanceMemberReference(allowNull: true))
|
|
..fileOffset = offset;
|
|
case Tag.InstanceGet:
|
|
InstanceAccessKind kind = InstanceAccessKind.values[readByte()];
|
|
int offset = readOffset();
|
|
return new InstanceGet.byReference(kind, readExpression(), readName(),
|
|
resultType: readDartType(),
|
|
interfaceTargetReference: readInstanceMemberReference())
|
|
..fileOffset = offset;
|
|
case Tag.InstanceTearOff:
|
|
InstanceAccessKind kind = InstanceAccessKind.values[readByte()];
|
|
int offset = readOffset();
|
|
return new InstanceTearOff.byReference(
|
|
kind, readExpression(), readName(),
|
|
resultType: readDartType(),
|
|
interfaceTargetReference: readInstanceMemberReference())
|
|
..fileOffset = offset;
|
|
case Tag.DynamicGet:
|
|
DynamicAccessKind kind = DynamicAccessKind.values[readByte()];
|
|
int offset = readOffset();
|
|
return new DynamicGet(kind, readExpression(), readName())
|
|
..fileOffset = offset;
|
|
case Tag.PropertySet:
|
|
int offset = readOffset();
|
|
return new PropertySet.byReference(readExpression(), readName(),
|
|
readExpression(), readInstanceMemberReference(allowNull: true))
|
|
..fileOffset = offset;
|
|
case Tag.InstanceSet:
|
|
InstanceAccessKind kind = InstanceAccessKind.values[readByte()];
|
|
int offset = readOffset();
|
|
return new InstanceSet.byReference(
|
|
kind, readExpression(), readName(), readExpression(),
|
|
interfaceTargetReference: readInstanceMemberReference())
|
|
..fileOffset = offset;
|
|
case Tag.DynamicSet:
|
|
DynamicAccessKind kind = DynamicAccessKind.values[readByte()];
|
|
int offset = readOffset();
|
|
return new DynamicSet(
|
|
kind, readExpression(), readName(), readExpression())
|
|
..fileOffset = offset;
|
|
case Tag.SuperPropertyGet:
|
|
int offset = readOffset();
|
|
addTransformerFlag(TransformerFlag.superCalls);
|
|
return new SuperPropertyGet.byReference(
|
|
readName(), readInstanceMemberReference(allowNull: true))
|
|
..fileOffset = offset;
|
|
case Tag.SuperPropertySet:
|
|
int offset = readOffset();
|
|
addTransformerFlag(TransformerFlag.superCalls);
|
|
return new SuperPropertySet.byReference(readName(), readExpression(),
|
|
readInstanceMemberReference(allowNull: true))
|
|
..fileOffset = offset;
|
|
case Tag.StaticGet:
|
|
int offset = readOffset();
|
|
return new StaticGet.byReference(readMemberReference())
|
|
..fileOffset = offset;
|
|
case Tag.StaticTearOff:
|
|
int offset = readOffset();
|
|
return new StaticTearOff.byReference(readMemberReference())
|
|
..fileOffset = offset;
|
|
case Tag.StaticSet:
|
|
int offset = readOffset();
|
|
return new StaticSet.byReference(
|
|
readMemberReference(), readExpression())
|
|
..fileOffset = offset;
|
|
case Tag.MethodInvocation:
|
|
int flags = readByte();
|
|
int offset = readOffset();
|
|
return new MethodInvocation.byReference(readExpression(), readName(),
|
|
readArguments(), readInstanceMemberReference(allowNull: true))
|
|
..fileOffset = offset
|
|
..flags = flags;
|
|
case Tag.InstanceInvocation:
|
|
InstanceAccessKind kind = InstanceAccessKind.values[readByte()];
|
|
int flags = readByte();
|
|
int offset = readOffset();
|
|
return new InstanceInvocation.byReference(
|
|
kind, readExpression(), readName(), readArguments(),
|
|
functionType: readDartType(),
|
|
interfaceTargetReference: readInstanceMemberReference())
|
|
..fileOffset = offset
|
|
..flags = flags;
|
|
case Tag.DynamicInvocation:
|
|
DynamicAccessKind kind = DynamicAccessKind.values[readByte()];
|
|
int offset = readOffset();
|
|
return new DynamicInvocation(
|
|
kind, readExpression(), readName(), readArguments())
|
|
..fileOffset = offset;
|
|
case Tag.FunctionInvocation:
|
|
FunctionAccessKind kind = FunctionAccessKind.values[readByte()];
|
|
int offset = readOffset();
|
|
Expression receiver = readExpression();
|
|
Arguments arguments = readArguments();
|
|
DartType functionType = readDartType();
|
|
// `const DynamicType()` is used to encode a missing function type.
|
|
assert(functionType is FunctionType || functionType is DynamicType,
|
|
"Unexpected function type $functionType for FunctionInvocation");
|
|
return new FunctionInvocation(kind, receiver, arguments,
|
|
functionType: functionType is FunctionType ? functionType : null)
|
|
..fileOffset = offset;
|
|
case Tag.FunctionTearOff:
|
|
int offset = readOffset();
|
|
return new FunctionTearOff(readExpression())..fileOffset = offset;
|
|
case Tag.LocalFunctionInvocation:
|
|
int offset = readOffset();
|
|
readUInt30(); // offset of the variable declaration in the binary.
|
|
return new LocalFunctionInvocation(
|
|
readVariableReference(), readArguments(),
|
|
functionType: readDartType())
|
|
..fileOffset = offset;
|
|
case Tag.EqualsNull:
|
|
int offset = readOffset();
|
|
return new EqualsNull(readExpression(), isNot: readByte() == 1)
|
|
..fileOffset = offset;
|
|
case Tag.EqualsCall:
|
|
int offset = readOffset();
|
|
return new EqualsCall.byReference(readExpression(), readExpression(),
|
|
isNot: readByte() == 1,
|
|
functionType: readDartType(),
|
|
interfaceTargetReference: readInstanceMemberReference())
|
|
..fileOffset = offset;
|
|
case Tag.SuperMethodInvocation:
|
|
int offset = readOffset();
|
|
addTransformerFlag(TransformerFlag.superCalls);
|
|
return new SuperMethodInvocation.byReference(readName(),
|
|
readArguments(), readInstanceMemberReference(allowNull: true))
|
|
..fileOffset = offset;
|
|
case Tag.StaticInvocation:
|
|
int offset = readOffset();
|
|
return new StaticInvocation.byReference(
|
|
readMemberReference(), readArguments(),
|
|
isConst: false)
|
|
..fileOffset = offset;
|
|
case Tag.ConstStaticInvocation:
|
|
int offset = readOffset();
|
|
return new StaticInvocation.byReference(
|
|
readMemberReference(), readArguments(),
|
|
isConst: true)
|
|
..fileOffset = offset;
|
|
case Tag.ConstructorInvocation:
|
|
int offset = readOffset();
|
|
return new ConstructorInvocation.byReference(
|
|
readMemberReference(), readArguments(),
|
|
isConst: false)
|
|
..fileOffset = offset;
|
|
case Tag.ConstConstructorInvocation:
|
|
int offset = readOffset();
|
|
return new ConstructorInvocation.byReference(
|
|
readMemberReference(), readArguments(),
|
|
isConst: true)
|
|
..fileOffset = offset;
|
|
case Tag.Not:
|
|
return new Not(readExpression());
|
|
case Tag.NullCheck:
|
|
int offset = readOffset();
|
|
return new NullCheck(readExpression())..fileOffset = offset;
|
|
case Tag.LogicalExpression:
|
|
return new LogicalExpression(readExpression(),
|
|
logicalOperatorToEnum(readByte()), readExpression());
|
|
case Tag.ConditionalExpression:
|
|
return new ConditionalExpression(readExpression(), readExpression(),
|
|
readExpression(), readDartTypeOption());
|
|
case Tag.StringConcatenation:
|
|
int offset = readOffset();
|
|
return new StringConcatenation(readExpressionList())
|
|
..fileOffset = offset;
|
|
case Tag.ListConcatenation:
|
|
int offset = readOffset();
|
|
DartType typeArgument = readDartType();
|
|
return new ListConcatenation(readExpressionList(),
|
|
typeArgument: typeArgument)
|
|
..fileOffset = offset;
|
|
case Tag.SetConcatenation:
|
|
int offset = readOffset();
|
|
DartType typeArgument = readDartType();
|
|
return new SetConcatenation(readExpressionList(),
|
|
typeArgument: typeArgument)
|
|
..fileOffset = offset;
|
|
case Tag.MapConcatenation:
|
|
int offset = readOffset();
|
|
DartType keyType = readDartType();
|
|
DartType valueType = readDartType();
|
|
return new MapConcatenation(readExpressionList(),
|
|
keyType: keyType, valueType: valueType)
|
|
..fileOffset = offset;
|
|
case Tag.InstanceCreation:
|
|
int offset = readOffset();
|
|
Reference classReference = readClassReference();
|
|
List<DartType> typeArguments = readDartTypeList();
|
|
int fieldValueCount = readUInt30();
|
|
Map<Reference, Expression> fieldValues = <Reference, Expression>{};
|
|
for (int i = 0; i < fieldValueCount; i++) {
|
|
final Reference fieldRef =
|
|
readCanonicalNameReference().getReference();
|
|
final Expression value = readExpression();
|
|
fieldValues[fieldRef] = value;
|
|
}
|
|
int assertCount = readUInt30();
|
|
List<AssertStatement> asserts =
|
|
new List<AssertStatement>.filled(assertCount, null);
|
|
for (int i = 0; i < assertCount; i++) {
|
|
asserts[i] = readStatement();
|
|
}
|
|
List<Expression> unusedArguments = readExpressionList();
|
|
return new InstanceCreation(classReference, typeArguments, fieldValues,
|
|
asserts, unusedArguments)
|
|
..fileOffset = offset;
|
|
case Tag.FileUriExpression:
|
|
Uri fileUri = readUriReference();
|
|
int offset = readOffset();
|
|
return new FileUriExpression(readExpression(), fileUri)
|
|
..fileOffset = offset;
|
|
case Tag.IsExpression:
|
|
int offset = readOffset();
|
|
int flags = readByte();
|
|
return new IsExpression(readExpression(), readDartType())
|
|
..fileOffset = offset
|
|
..flags = flags;
|
|
case Tag.AsExpression:
|
|
int offset = readOffset();
|
|
int flags = readByte();
|
|
return new AsExpression(readExpression(), readDartType())
|
|
..fileOffset = offset
|
|
..flags = flags;
|
|
case Tag.StringLiteral:
|
|
return new StringLiteral(readStringReference());
|
|
case Tag.SpecializedIntLiteral:
|
|
int biasedValue = tagByte & Tag.SpecializedPayloadMask;
|
|
return new IntLiteral(biasedValue - Tag.SpecializedIntLiteralBias);
|
|
case Tag.PositiveIntLiteral:
|
|
return new IntLiteral(readUInt30());
|
|
case Tag.NegativeIntLiteral:
|
|
return new IntLiteral(-readUInt30());
|
|
case Tag.BigIntLiteral:
|
|
return new IntLiteral(int.parse(readStringReference()));
|
|
case Tag.DoubleLiteral:
|
|
return new DoubleLiteral(readDouble());
|
|
case Tag.TrueLiteral:
|
|
return new BoolLiteral(true);
|
|
case Tag.FalseLiteral:
|
|
return new BoolLiteral(false);
|
|
case Tag.NullLiteral:
|
|
return new NullLiteral();
|
|
case Tag.SymbolLiteral:
|
|
return new SymbolLiteral(readStringReference());
|
|
case Tag.TypeLiteral:
|
|
return new TypeLiteral(readDartType());
|
|
case Tag.ThisExpression:
|
|
return new ThisExpression();
|
|
case Tag.Rethrow:
|
|
int offset = readOffset();
|
|
return new Rethrow()..fileOffset = offset;
|
|
case Tag.Throw:
|
|
int offset = readOffset();
|
|
return new Throw(readExpression())..fileOffset = offset;
|
|
case Tag.ListLiteral:
|
|
int offset = readOffset();
|
|
DartType typeArgument = readDartType();
|
|
return new ListLiteral(readExpressionList(),
|
|
typeArgument: typeArgument, isConst: false)
|
|
..fileOffset = offset;
|
|
case Tag.ConstListLiteral:
|
|
int offset = readOffset();
|
|
DartType typeArgument = readDartType();
|
|
return new ListLiteral(readExpressionList(),
|
|
typeArgument: typeArgument, isConst: true)
|
|
..fileOffset = offset;
|
|
case Tag.SetLiteral:
|
|
int offset = readOffset();
|
|
DartType typeArgument = readDartType();
|
|
return new SetLiteral(readExpressionList(),
|
|
typeArgument: typeArgument, isConst: false)
|
|
..fileOffset = offset;
|
|
case Tag.ConstSetLiteral:
|
|
int offset = readOffset();
|
|
DartType typeArgument = readDartType();
|
|
return new SetLiteral(readExpressionList(),
|
|
typeArgument: typeArgument, isConst: true)
|
|
..fileOffset = offset;
|
|
case Tag.MapLiteral:
|
|
int offset = readOffset();
|
|
DartType keyType = readDartType();
|
|
DartType valueType = readDartType();
|
|
return new MapLiteral(readMapEntryList(),
|
|
keyType: keyType, valueType: valueType, isConst: false)
|
|
..fileOffset = offset;
|
|
case Tag.ConstMapLiteral:
|
|
int offset = readOffset();
|
|
DartType keyType = readDartType();
|
|
DartType valueType = readDartType();
|
|
return new MapLiteral(readMapEntryList(),
|
|
keyType: keyType, valueType: valueType, isConst: true)
|
|
..fileOffset = offset;
|
|
case Tag.AwaitExpression:
|
|
return new AwaitExpression(readExpression());
|
|
case Tag.FunctionExpression:
|
|
int offset = readOffset();
|
|
return new FunctionExpression(readFunctionNode())..fileOffset = offset;
|
|
case Tag.Let:
|
|
VariableDeclaration variable = readVariableDeclaration();
|
|
int stackHeight = variableStack.length;
|
|
pushVariableDeclaration(variable);
|
|
Expression body = readExpression();
|
|
variableStack.length = stackHeight;
|
|
return new Let(variable, body);
|
|
case Tag.BlockExpression:
|
|
int stackHeight = variableStack.length;
|
|
List<Statement> statements = readStatementList();
|
|
Expression value = readExpression();
|
|
variableStack.length = stackHeight;
|
|
return new BlockExpression(new Block(statements), value);
|
|
case Tag.Instantiation:
|
|
Expression expression = readExpression();
|
|
List<DartType> typeArguments = readDartTypeList();
|
|
return new Instantiation(expression, typeArguments);
|
|
case Tag.ConstantExpression:
|
|
int offset = readOffset();
|
|
DartType type = readDartType();
|
|
Constant constant = readConstantReference();
|
|
return new ConstantExpression(constant, type)..fileOffset = offset;
|
|
default:
|
|
throw fail('unexpected expression tag: $tag');
|
|
}
|
|
}
|
|
|
|
List<MapEntry> readMapEntryList() {
|
|
int length = readUInt30();
|
|
List<MapEntry> result =
|
|
new List<MapEntry>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readMapEntry();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
MapEntry readMapEntry() {
|
|
return new MapEntry(readExpression(), readExpression());
|
|
}
|
|
|
|
List<Statement> readStatementList() {
|
|
int length = readUInt30();
|
|
List<Statement> result =
|
|
new List<Statement>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readStatement();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Statement readStatementOrNullIfEmpty() {
|
|
Statement node = readStatement();
|
|
if (node is EmptyStatement) {
|
|
return null;
|
|
} else {
|
|
return node;
|
|
}
|
|
}
|
|
|
|
Statement readStatementOption() {
|
|
return readAndCheckOptionTag() ? readStatement() : null;
|
|
}
|
|
|
|
Statement readStatement() {
|
|
int tag = readByte();
|
|
switch (tag) {
|
|
case Tag.ExpressionStatement:
|
|
return new ExpressionStatement(readExpression());
|
|
case Tag.Block:
|
|
return readBlock();
|
|
case Tag.AssertBlock:
|
|
return readAssertBlock();
|
|
case Tag.EmptyStatement:
|
|
return new EmptyStatement();
|
|
case Tag.AssertStatement:
|
|
return new AssertStatement(readExpression(),
|
|
conditionStartOffset: readOffset(),
|
|
conditionEndOffset: readOffset(),
|
|
message: readExpressionOption());
|
|
case Tag.LabeledStatement:
|
|
LabeledStatement label = new LabeledStatement(null);
|
|
labelStack.add(label);
|
|
label.body = readStatement()..parent = label;
|
|
labelStack.removeLast();
|
|
return label;
|
|
case Tag.BreakStatement:
|
|
int offset = readOffset();
|
|
int index = readUInt30();
|
|
return new BreakStatement(labelStack[labelStackBase + index])
|
|
..fileOffset = offset;
|
|
case Tag.WhileStatement:
|
|
int offset = readOffset();
|
|
return new WhileStatement(readExpression(), readStatement())
|
|
..fileOffset = offset;
|
|
case Tag.DoStatement:
|
|
int offset = readOffset();
|
|
return new DoStatement(readStatement(), readExpression())
|
|
..fileOffset = offset;
|
|
case Tag.ForStatement:
|
|
int variableStackHeight = variableStack.length;
|
|
int offset = readOffset();
|
|
List<VariableDeclaration> variables =
|
|
readAndPushVariableDeclarationList();
|
|
Expression condition = readExpressionOption();
|
|
List<Expression> updates = readExpressionList();
|
|
Statement body = readStatement();
|
|
variableStack.length = variableStackHeight;
|
|
return new ForStatement(variables, condition, updates, body)
|
|
..fileOffset = offset;
|
|
case Tag.ForInStatement:
|
|
case Tag.AsyncForInStatement:
|
|
bool isAsync = tag == Tag.AsyncForInStatement;
|
|
int variableStackHeight = variableStack.length;
|
|
int offset = readOffset();
|
|
int bodyOffset = readOffset();
|
|
VariableDeclaration variable = readAndPushVariableDeclaration();
|
|
Expression iterable = readExpression();
|
|
Statement body = readStatement();
|
|
variableStack.length = variableStackHeight;
|
|
return new ForInStatement(variable, iterable, body, isAsync: isAsync)
|
|
..fileOffset = offset
|
|
..bodyOffset = bodyOffset;
|
|
case Tag.SwitchStatement:
|
|
int offset = readOffset();
|
|
Expression expression = readExpression();
|
|
int count = readUInt30();
|
|
List<SwitchCase> cases =
|
|
new List<SwitchCase>.filled(count, null, growable: true);
|
|
for (int i = 0; i < count; ++i) {
|
|
cases[i] = new SwitchCase.empty();
|
|
}
|
|
switchCaseStack.addAll(cases);
|
|
for (int i = 0; i < cases.length; ++i) {
|
|
readSwitchCaseInto(cases[i]);
|
|
}
|
|
switchCaseStack.length -= count;
|
|
return new SwitchStatement(expression, cases)..fileOffset = offset;
|
|
case Tag.ContinueSwitchStatement:
|
|
int offset = readOffset();
|
|
int index = readUInt30();
|
|
return new ContinueSwitchStatement(
|
|
switchCaseStack[switchCaseStackBase + index])
|
|
..fileOffset = offset;
|
|
case Tag.IfStatement:
|
|
int offset = readOffset();
|
|
return new IfStatement(
|
|
readExpression(), readStatement(), readStatementOrNullIfEmpty())
|
|
..fileOffset = offset;
|
|
case Tag.ReturnStatement:
|
|
int offset = readOffset();
|
|
return new ReturnStatement(readExpressionOption())..fileOffset = offset;
|
|
case Tag.TryCatch:
|
|
Statement body = readStatement();
|
|
int flags = readByte();
|
|
return new TryCatch(body, readCatchList(), isSynthetic: flags & 2 == 2);
|
|
case Tag.TryFinally:
|
|
return new TryFinally(readStatement(), readStatement());
|
|
case Tag.YieldStatement:
|
|
int offset = readOffset();
|
|
int flags = readByte();
|
|
return new YieldStatement(readExpression(),
|
|
isYieldStar: flags & YieldStatement.FlagYieldStar != 0,
|
|
isNative: flags & YieldStatement.FlagNative != 0)
|
|
..fileOffset = offset;
|
|
case Tag.VariableDeclaration:
|
|
VariableDeclaration variable = readVariableDeclaration();
|
|
variableStack.add(variable); // Will be popped by the enclosing scope.
|
|
return variable;
|
|
case Tag.FunctionDeclaration:
|
|
int offset = readOffset();
|
|
VariableDeclaration variable = readVariableDeclaration();
|
|
variableStack.add(variable); // Will be popped by the enclosing scope.
|
|
FunctionNode function = readFunctionNode();
|
|
return new FunctionDeclaration(variable, function)..fileOffset = offset;
|
|
default:
|
|
throw fail('unexpected statement tag: $tag');
|
|
}
|
|
}
|
|
|
|
void readSwitchCaseInto(SwitchCase caseNode) {
|
|
int length = readUInt30();
|
|
caseNode.expressions.length = length;
|
|
caseNode.expressionOffsets.length = length;
|
|
for (int i = 0; i < length; ++i) {
|
|
caseNode.expressionOffsets[i] = readOffset();
|
|
caseNode.expressions[i] = readExpression()..parent = caseNode;
|
|
}
|
|
caseNode.isDefault = readByte() == 1;
|
|
caseNode.body = readStatement()..parent = caseNode;
|
|
}
|
|
|
|
List<Catch> readCatchList() {
|
|
int length = readUInt30();
|
|
List<Catch> result = new List<Catch>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readCatch();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Catch readCatch() {
|
|
int variableStackHeight = variableStack.length;
|
|
int offset = readOffset();
|
|
DartType guard = readDartType();
|
|
VariableDeclaration exception = readAndPushVariableDeclarationOption();
|
|
VariableDeclaration stackTrace = readAndPushVariableDeclarationOption();
|
|
Statement body = readStatement();
|
|
variableStack.length = variableStackHeight;
|
|
return new Catch(exception, body, guard: guard, stackTrace: stackTrace)
|
|
..fileOffset = offset;
|
|
}
|
|
|
|
Block readBlock() {
|
|
int stackHeight = variableStack.length;
|
|
int offset = readOffset();
|
|
int endOffset = readOffset();
|
|
List<Statement> body = readStatementList();
|
|
variableStack.length = stackHeight;
|
|
return new Block(body)
|
|
..fileOffset = offset
|
|
..fileEndOffset = endOffset;
|
|
}
|
|
|
|
AssertBlock readAssertBlock() {
|
|
int stackHeight = variableStack.length;
|
|
List<Statement> body = readStatementList();
|
|
variableStack.length = stackHeight;
|
|
return new AssertBlock(body);
|
|
}
|
|
|
|
Supertype readSupertype() {
|
|
InterfaceType type = readDartType(forSupertype: true);
|
|
assert(
|
|
type.nullability == _currentLibrary.nonNullable,
|
|
"In serialized form supertypes should have Nullability.legacy if they "
|
|
"are in a library that is opted out of the NNBD feature. If they are "
|
|
"in an opted-in library, they should have Nullability.nonNullable.");
|
|
return new Supertype.byReference(type.className, type.typeArguments);
|
|
}
|
|
|
|
Supertype readSupertypeOption() {
|
|
return readAndCheckOptionTag() ? readSupertype() : null;
|
|
}
|
|
|
|
List<Supertype> readSupertypeList() {
|
|
int length = readUInt30();
|
|
List<Supertype> result =
|
|
new List<Supertype>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readSupertype();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
List<DartType> readDartTypeList() {
|
|
int length = readUInt30();
|
|
List<DartType> result =
|
|
new List<DartType>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readDartType();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
List<NamedType> readNamedTypeList() {
|
|
int length = readUInt30();
|
|
List<NamedType> result =
|
|
new List<NamedType>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readNamedType();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NamedType readNamedType() {
|
|
String name = readStringReference();
|
|
DartType type = readDartType();
|
|
int flags = readByte();
|
|
return new NamedType(name, type,
|
|
isRequired: (flags & NamedType.FlagRequiredNamedType) != 0);
|
|
}
|
|
|
|
DartType readDartTypeOption() {
|
|
return readAndCheckOptionTag() ? readDartType() : null;
|
|
}
|
|
|
|
DartType readDartType({bool forSupertype: false}) {
|
|
int tag = readByte();
|
|
switch (tag) {
|
|
case Tag.TypedefType:
|
|
int nullabilityIndex = readByte();
|
|
return new TypedefType.byReference(readTypedefReference(),
|
|
Nullability.values[nullabilityIndex], readDartTypeList());
|
|
case Tag.BottomType:
|
|
return const BottomType();
|
|
case Tag.InvalidType:
|
|
return const InvalidType();
|
|
case Tag.DynamicType:
|
|
return const DynamicType();
|
|
case Tag.VoidType:
|
|
return const VoidType();
|
|
case Tag.NeverType:
|
|
int nullabilityIndex = readByte();
|
|
return new NeverType(Nullability.values[nullabilityIndex]);
|
|
case Tag.InterfaceType:
|
|
int nullabilityIndex = readByte();
|
|
Reference reference = readClassReference();
|
|
List<DartType> typeArguments = readDartTypeList();
|
|
{
|
|
CanonicalName canonicalName = reference.canonicalName;
|
|
if (canonicalName.name == "FutureOr" &&
|
|
canonicalName.parent != null &&
|
|
canonicalName.parent.name == "dart:async" &&
|
|
canonicalName.parent.parent != null &&
|
|
canonicalName.parent.parent.isRoot) {
|
|
return new FutureOrType(
|
|
typeArguments.single, Nullability.values[nullabilityIndex]);
|
|
}
|
|
}
|
|
return new InterfaceType.byReference(
|
|
reference, Nullability.values[nullabilityIndex], typeArguments);
|
|
case Tag.SimpleInterfaceType:
|
|
int nullabilityIndex = readByte();
|
|
Reference classReference = readClassReference();
|
|
{
|
|
CanonicalName canonicalName = classReference.canonicalName;
|
|
if (canonicalName != null &&
|
|
!forSupertype &&
|
|
canonicalName.name == "Null" &&
|
|
canonicalName.parent?.name == "dart:core" &&
|
|
(canonicalName.parent?.parent?.isRoot ?? false)) {
|
|
return const NullType();
|
|
}
|
|
}
|
|
return new InterfaceType.byReference(classReference,
|
|
Nullability.values[nullabilityIndex], const <DartType>[]);
|
|
case Tag.FunctionType:
|
|
int typeParameterStackHeight = typeParameterStack.length;
|
|
int nullabilityIndex = readByte();
|
|
List<TypeParameter> typeParameters = readAndPushTypeParameterList();
|
|
int requiredParameterCount = readUInt30();
|
|
int totalParameterCount = readUInt30();
|
|
List<DartType> positional = readDartTypeList();
|
|
List<NamedType> named = readNamedTypeList();
|
|
DartType typedefType = readDartTypeOption();
|
|
assert(positional.length + named.length == totalParameterCount);
|
|
DartType returnType = readDartType();
|
|
typeParameterStack.length = typeParameterStackHeight;
|
|
return new FunctionType(
|
|
positional, returnType, Nullability.values[nullabilityIndex],
|
|
typeParameters: typeParameters,
|
|
requiredParameterCount: requiredParameterCount,
|
|
namedParameters: named,
|
|
typedefType: typedefType);
|
|
case Tag.SimpleFunctionType:
|
|
int nullabilityIndex = readByte();
|
|
List<DartType> positional = readDartTypeList();
|
|
DartType returnType = readDartType();
|
|
return new FunctionType(
|
|
positional, returnType, Nullability.values[nullabilityIndex]);
|
|
case Tag.TypeParameterType:
|
|
int declaredNullabilityIndex = readByte();
|
|
int index = readUInt30();
|
|
DartType bound = readDartTypeOption();
|
|
return new TypeParameterType(typeParameterStack[index],
|
|
Nullability.values[declaredNullabilityIndex], bound);
|
|
default:
|
|
throw fail('unexpected dart type tag: $tag');
|
|
}
|
|
}
|
|
|
|
List<TypeParameter> readAndPushTypeParameterList(
|
|
[List<TypeParameter> list, TreeNode parent]) {
|
|
int length = readUInt30();
|
|
if (length == 0) return list ?? <TypeParameter>[];
|
|
if (list == null) {
|
|
list = new List<TypeParameter>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
list[i] = new TypeParameter(null, null)..parent = parent;
|
|
}
|
|
} else if (list.length != length) {
|
|
list.length = length;
|
|
for (int i = 0; i < length; ++i) {
|
|
list[i] = new TypeParameter(null, null)..parent = parent;
|
|
}
|
|
}
|
|
typeParameterStack.addAll(list);
|
|
for (int i = 0; i < list.length; ++i) {
|
|
readTypeParameter(list[i]);
|
|
}
|
|
return list;
|
|
}
|
|
|
|
void readTypeParameter(TypeParameter node) {
|
|
node.flags = readByte();
|
|
node.annotations = readAnnotationList(node);
|
|
int variance = readByte();
|
|
if (variance == TypeParameter.legacyCovariantSerializationMarker) {
|
|
node.variance = null;
|
|
} else {
|
|
node.variance = variance;
|
|
}
|
|
node.name = readStringOrNullIfEmpty();
|
|
node.bound = readDartType();
|
|
node.defaultType = readDartTypeOption();
|
|
}
|
|
|
|
Arguments readArguments() {
|
|
int numArguments = readUInt30();
|
|
List<DartType> typeArguments = readDartTypeList();
|
|
List<Expression> positional = readExpressionList();
|
|
List<NamedExpression> named = readNamedExpressionList();
|
|
assert(numArguments == positional.length + named.length);
|
|
return new Arguments(positional, types: typeArguments, named: named);
|
|
}
|
|
|
|
List<NamedExpression> readNamedExpressionList() {
|
|
int length = readUInt30();
|
|
List<NamedExpression> result =
|
|
new List<NamedExpression>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readNamedExpression();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
NamedExpression readNamedExpression() {
|
|
return new NamedExpression(readStringReference(), readExpression());
|
|
}
|
|
|
|
List<VariableDeclaration> readAndPushVariableDeclarationList() {
|
|
int length = readUInt30();
|
|
List<VariableDeclaration> result =
|
|
new List<VariableDeclaration>.filled(length, null, growable: true);
|
|
for (int i = 0; i < length; ++i) {
|
|
result[i] = readAndPushVariableDeclaration();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
VariableDeclaration readAndPushVariableDeclarationOption() {
|
|
return readAndCheckOptionTag() ? readAndPushVariableDeclaration() : null;
|
|
}
|
|
|
|
VariableDeclaration readAndPushVariableDeclaration() {
|
|
VariableDeclaration variable = readVariableDeclaration();
|
|
variableStack.add(variable);
|
|
return variable;
|
|
}
|
|
|
|
VariableDeclaration readVariableDeclaration() {
|
|
int offset = readOffset();
|
|
int fileEqualsOffset = readOffset();
|
|
// The [VariableDeclaration] instance is not created at this point yet,
|
|
// so `null` is temporarily set as the parent of the annotation nodes.
|
|
List<Expression> annotations = readAnnotationList(null);
|
|
int flags = readByte();
|
|
VariableDeclaration node = new VariableDeclaration(
|
|
readStringOrNullIfEmpty(),
|
|
type: readDartType(),
|
|
initializer: readExpressionOption(),
|
|
flags: flags)
|
|
..fileOffset = offset
|
|
..fileEqualsOffset = fileEqualsOffset;
|
|
if (annotations.isNotEmpty) {
|
|
for (int i = 0; i < annotations.length; ++i) {
|
|
Expression annotation = annotations[i];
|
|
annotation.parent = node;
|
|
}
|
|
node.annotations = annotations;
|
|
}
|
|
return node;
|
|
}
|
|
|
|
int readOffset() {
|
|
// Offset is saved as unsigned,
|
|
// but actually ranges from -1 and up (thus the -1)
|
|
return readUInt30() - 1;
|
|
}
|
|
}
|
|
|
|
class BinaryBuilderWithMetadata extends BinaryBuilder implements BinarySource {
|
|
/// List of metadata subsections that have corresponding [MetadataRepository]
|
|
/// and are awaiting to be parsed and attached to nodes.
|
|
List<_MetadataSubsection> _subsections;
|
|
|
|
BinaryBuilderWithMetadata(List<int> bytes,
|
|
{String filename,
|
|
bool disableLazyReading = false,
|
|
bool disableLazyClassReading = false,
|
|
bool alwaysCreateNewNamedNodes})
|
|
: super(bytes,
|
|
filename: filename,
|
|
disableLazyReading: disableLazyReading,
|
|
disableLazyClassReading: disableLazyClassReading,
|
|
alwaysCreateNewNamedNodes: alwaysCreateNewNamedNodes);
|
|
|
|
@override
|
|
void _readMetadataMappings(
|
|
Component component, int binaryOffsetForMetadataPayloads) {
|
|
// At the beginning of this function _byteOffset points right past
|
|
// metadataMappings to string table.
|
|
|
|
// Read the length of metadataMappings.
|
|
_byteOffset -= 4;
|
|
final int subSectionCount = readUint32();
|
|
|
|
int endOffset = _byteOffset - 4; // End offset of the current subsection.
|
|
for (int i = 0; i < subSectionCount; i++) {
|
|
// RList<Pair<UInt32, UInt32>> nodeOffsetToMetadataOffset
|
|
_byteOffset = endOffset - 4;
|
|
final int mappingLength = readUint32();
|
|
final int mappingStart = (endOffset - 4) - 4 * 2 * mappingLength;
|
|
_byteOffset = mappingStart - 4;
|
|
|
|
// UInt32 tag (fixed size StringReference)
|
|
final String tag = _stringTable[readUint32()];
|
|
|
|
final MetadataRepository repository = component.metadata[tag];
|
|
if (repository != null) {
|
|
// Read nodeOffsetToMetadataOffset mapping.
|
|
final Map<int, int> mapping = <int, int>{};
|
|
_byteOffset = mappingStart;
|
|
for (int j = 0; j < mappingLength; j++) {
|
|
final int nodeOffset = readUint32();
|
|
final int metadataOffset =
|
|
binaryOffsetForMetadataPayloads + readUint32();
|
|
mapping[nodeOffset] = metadataOffset;
|
|
}
|
|
|
|
_subsections ??= <_MetadataSubsection>[];
|
|
_subsections.add(new _MetadataSubsection(repository, mapping));
|
|
}
|
|
|
|
// Start of the subsection and the end of the previous one.
|
|
endOffset = mappingStart - 4;
|
|
}
|
|
}
|
|
|
|
Object _readMetadata(Node node, MetadataRepository repository, int offset) {
|
|
final int savedOffset = _byteOffset;
|
|
_byteOffset = offset;
|
|
|
|
final Object metadata = repository.readFromBinary(node, this);
|
|
|
|
_byteOffset = savedOffset;
|
|
return metadata;
|
|
}
|
|
|
|
@override
|
|
void enterScope({List<TypeParameter> typeParameters}) {
|
|
if (typeParameters != null) {
|
|
typeParameterStack.addAll(typeParameters);
|
|
}
|
|
}
|
|
|
|
@override
|
|
void leaveScope({List<TypeParameter> typeParameters}) {
|
|
if (typeParameters != null) {
|
|
typeParameterStack.length -= typeParameters.length;
|
|
}
|
|
}
|
|
|
|
@override
|
|
Node _associateMetadata(Node node, int nodeOffset) {
|
|
if (_subsections == null) {
|
|
return node;
|
|
}
|
|
|
|
for (_MetadataSubsection subsection in _subsections) {
|
|
// First check if there is any metadata associated with this node.
|
|
final int metadataOffset = subsection.mapping[nodeOffset];
|
|
if (metadataOffset != null) {
|
|
subsection.repository.mapping[node] =
|
|
_readMetadata(node, subsection.repository, metadataOffset);
|
|
}
|
|
}
|
|
|
|
return node;
|
|
}
|
|
|
|
@override
|
|
DartType readDartType({bool forSupertype = false}) {
|
|
final int nodeOffset = _byteOffset;
|
|
final DartType result = super.readDartType(forSupertype: forSupertype);
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Library readLibrary(Component component, int endOffset) {
|
|
final int nodeOffset = _byteOffset;
|
|
final Library result = super.readLibrary(component, endOffset);
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Typedef readTypedef() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Typedef result = super.readTypedef();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Class readClass(int endOffset) {
|
|
final int nodeOffset = _byteOffset;
|
|
final Class result = super.readClass(endOffset);
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Extension readExtension() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Extension result = super.readExtension();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Field readField() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Field result = super.readField();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Constructor readConstructor() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Constructor result = super.readConstructor();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Procedure readProcedure(int endOffset) {
|
|
final int nodeOffset = _byteOffset;
|
|
final Procedure result = super.readProcedure(endOffset);
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
RedirectingFactoryConstructor readRedirectingFactoryConstructor() {
|
|
final int nodeOffset = _byteOffset;
|
|
final RedirectingFactoryConstructor result =
|
|
super.readRedirectingFactoryConstructor();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Initializer readInitializer() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Initializer result = super.readInitializer();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
FunctionNode readFunctionNode(
|
|
{bool lazyLoadBody: false, int outerEndOffset: -1}) {
|
|
final int nodeOffset = _byteOffset;
|
|
final FunctionNode result = super.readFunctionNode(
|
|
lazyLoadBody: lazyLoadBody, outerEndOffset: outerEndOffset);
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Expression readExpression() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Expression result = super.readExpression();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Arguments readArguments() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Arguments result = super.readArguments();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
NamedExpression readNamedExpression() {
|
|
final int nodeOffset = _byteOffset;
|
|
final NamedExpression result = super.readNamedExpression();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
VariableDeclaration readVariableDeclaration() {
|
|
final int nodeOffset = _byteOffset;
|
|
final VariableDeclaration result = super.readVariableDeclaration();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Statement readStatement() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Statement result = super.readStatement();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Combinator readCombinator() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Combinator result = super.readCombinator();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
LibraryDependency readLibraryDependency(Library library) {
|
|
final int nodeOffset = _byteOffset;
|
|
final LibraryDependency result = super.readLibraryDependency(library);
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
LibraryPart readLibraryPart(Library library) {
|
|
final int nodeOffset = _byteOffset;
|
|
final LibraryPart result = super.readLibraryPart(library);
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
void readSwitchCaseInto(SwitchCase caseNode) {
|
|
_associateMetadata(caseNode, _byteOffset);
|
|
super.readSwitchCaseInto(caseNode);
|
|
}
|
|
|
|
@override
|
|
void readTypeParameter(TypeParameter param) {
|
|
_associateMetadata(param, _byteOffset);
|
|
super.readTypeParameter(param);
|
|
}
|
|
|
|
@override
|
|
Supertype readSupertype() {
|
|
final int nodeOffset = _byteOffset;
|
|
InterfaceType type = super.readDartType(forSupertype: true);
|
|
return _associateMetadata(
|
|
new Supertype.byReference(type.className, type.typeArguments),
|
|
nodeOffset);
|
|
}
|
|
|
|
@override
|
|
Name readName() {
|
|
final int nodeOffset = _byteOffset;
|
|
final Name result = super.readName();
|
|
return _associateMetadata(result, nodeOffset);
|
|
}
|
|
|
|
@override
|
|
int get currentOffset => _byteOffset;
|
|
|
|
@override
|
|
List<int> get bytes => _bytes;
|
|
}
|
|
|
|
/// Deserialized MetadataMapping corresponding to the given metadata repository.
|
|
class _MetadataSubsection {
|
|
/// [MetadataRepository] that can read this subsection.
|
|
final MetadataRepository repository;
|
|
|
|
/// Deserialized mapping from node offsets to metadata offsets.
|
|
final Map<int, int> mapping;
|
|
|
|
_MetadataSubsection(this.repository, this.mapping);
|
|
}
|
|
|
|
/// Merges two compilation modes or throws if they are not compatible.
|
|
NonNullableByDefaultCompiledMode mergeCompilationModeOrThrow(
|
|
NonNullableByDefaultCompiledMode a, NonNullableByDefaultCompiledMode b) {
|
|
if (a == null || a == b) {
|
|
return b;
|
|
}
|
|
|
|
// If something is invalid, it should always merge as invalid.
|
|
if (a == NonNullableByDefaultCompiledMode.Invalid) {
|
|
return a;
|
|
}
|
|
if (b == NonNullableByDefaultCompiledMode.Invalid) {
|
|
return b;
|
|
}
|
|
|
|
if (a == NonNullableByDefaultCompiledMode.Agnostic) {
|
|
return b;
|
|
}
|
|
if (b == NonNullableByDefaultCompiledMode.Agnostic) {
|
|
// Keep as-is.
|
|
return a;
|
|
}
|
|
|
|
// Mixed mode where agnostic isn't involved.
|
|
throw new CompilationModeError("Mixed compilation mode found: $a and $b");
|
|
}
|