Joshua Litt
20faaa5d94
Change-Id: Ib18f554c1076f27a3f7c0df5a36410da41a1f467 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148784 Reviewed-by: Paul Berry <paulberry@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>
70 lines
1.8 KiB
Dart
70 lines
1.8 KiB
Dart
// Copyright (c) 2015, 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 = 2.7
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library sourcemap.trace_graph;
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import 'dart:collection';
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import 'package:compiler/src/io/source_information.dart';
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import 'package:compiler/src/io/position_information.dart';
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import 'package:compiler/src/js/js_debug.dart';
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import 'sourcemap_html_helper.dart';
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class TraceGraph {
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List<TraceStep> steps = <TraceStep>[];
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TraceStep entry;
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Queue stack = new Queue();
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Map<int, TraceStep> offsetMap = {};
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void addStep(TraceStep step) {
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steps.add(step);
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int offset = step.offset.value;
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TraceStep existingStep = offsetMap[offset];
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if (existingStep != null) {
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// TODO(johnniwinther): Fix problems with reuse of JS nodes from
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// templates.
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if (identical(existingStep.node, step.node)) {
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print('duplicate node: ${nodeToString(step.node)}');
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} else {
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print('duplicate offset: ${offset} : ${nodeToString(step.node)}');
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}
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print(' ${existingStep.id}:${existingStep.text}:${existingStep.offset}');
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print(' ${step.id}:${step.text}:${step.offset}');
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}
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offsetMap[offset] = step;
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step.stack = stack.toList();
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}
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void pushBranch(branch) {
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stack.addLast(branch);
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}
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void popBranch() {
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stack.removeLast();
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}
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}
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class TraceStep {
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final kind;
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final int id;
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final node;
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final Offset offset;
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final List text;
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final SourceLocation sourceLocation;
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TraceStep next;
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Map<dynamic, TraceStep> branchMap;
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List stack;
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TraceStep(this.kind, this.id, this.node, this.offset, this.text,
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[this.sourceLocation]);
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@override
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String toString() => '<span style="background:${toColorCss(id)}">$id</span>';
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}
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