Linter Demo

Errors: 4

Warnings: 0

File: /home/fstrocco/Dart/dart/benchmark/compiler/lib/src/io/code_output.dart

// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. library dart2js.code_output; import 'dart:async'; import 'source_information.dart'; class CodeOutputMarker { final int offsetDelta; final SourceLocation sourcePosition; CodeOutputMarker(this.offsetDelta, this.sourcePosition); } abstract class CodeOutputListener { void onText(String text); void onDone(int length); } abstract class CodeOutput { /// Write [text] to this output. /// /// If the output is closed, a [StateError] is thrown. void add(String text); /// Adds the content of [buffer] to the output and adds its markers to /// [markers]. /// /// If the output is closed, a [StateError] is thrown. void addBuffer(CodeBuffer buffer); /// Returns the number of characters currently write to this output. int get length; /// Returns `true` if this output has been closed. bool get isClosed; /// Closes the output. Further writes will cause a [StateError]. void close(); /// Sets the [sourcePosition] for the code next added to this output. void setSourceLocation(SourceLocation sourcePosition); /// Applies [f] to every marker in this output. void forEachSourceLocation(void f(int targetOffset, SourceLocation sourceLocation)); } abstract class AbstractCodeOutput extends CodeOutput { List<CodeOutputMarker> markers = new List<CodeOutputMarker>(); int lastBufferOffset = 0; int mappedRangeCounter = 0; bool isClosed = false; void _addInternal(String text); @override void add(String text) { if (isClosed) { throw new StateError("Code output is closed. Trying to write '$text'."); } if (mappedRangeCounter == 0) setSourceLocation(null); _addInternal(text); } @override void addBuffer(CodeBuffer other) { if (other.markers.length > 0) { CodeOutputMarker firstMarker = other.markers[0]; int offsetDelta = length + firstMarker.offsetDelta - lastBufferOffset; markers.add(new CodeOutputMarker(offsetDelta, firstMarker.sourcePosition)); for (int i = 1; i < other.markers.length; ++i) { markers.add(other.markers[i]); } lastBufferOffset = length + other.lastBufferOffset; } if (!other.isClosed) { other.close(); } _addInternal(other.getText()); } void beginMappedRange() { ++mappedRangeCounter; } void endMappedRange() { assert(mappedRangeCounter > 0); --mappedRangeCounter; } void setSourceLocation(SourceLocation sourcePosition) { if (sourcePosition == null) { if (markers.length > 0 && markers.last.sourcePosition == null) return; } int offsetDelta = length - lastBufferOffset; markers.add(new CodeOutputMarker(offsetDelta, sourcePosition)); lastBufferOffset = length; } void forEachSourceLocation(void f(int targetOffset, var sourcePosition)) { int targetOffset = 0; markers.forEach((marker) { targetOffset += marker.offsetDelta; f(targetOffset, marker.sourcePosition); }); } void close() { if (isClosed) { throw new StateError("Code output is already closed."); } isClosed = true; } } /// [CodeOutput] using a [StringBuffer] as backend. class CodeBuffer extends AbstractCodeOutput { StringBuffer buffer = new StringBuffer(); @override void _addInternal(String text) { buffer.write(text); } @override int get length => buffer.length; String getText() { return buffer.toString(); } String toString() { throw "Don't use CodeBuffer.toString() since it drops sourcemap data."; } } /// [CodeOutput] using a [CompilationOutput] as backend. class StreamCodeOutput extends AbstractCodeOutput { int length = 0; final EventSink<String> output; final List<CodeOutputListener> _listeners; StreamCodeOutput(this.output, [this._listeners]); @override void _addInternal(String text) { output.add(text); length += text.length; if (_listeners != null) { _listeners.forEach((listener) => listener.onText(text)); } } void close() { output.close(); super.close(); if (_listeners != null) { _listeners.forEach((listener) => listener.onDone(length)); } } }