blob: 31d5d31b385c6eac3dd2464305a330dbe2474e8e [file] [log] [blame]
// Copyright (c) 2015, 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.
// @dart = 2.7
library sourcemap.trace_graph;
import 'dart:collection';
import 'package:compiler/src/io/source_information.dart';
import 'package:compiler/src/io/position_information.dart';
import 'package:compiler/src/js/js_debug.dart';
import 'sourcemap_html_helper.dart';
class TraceGraph {
List<TraceStep> steps = <TraceStep>[];
TraceStep entry;
Queue stack = new Queue();
Map<int, TraceStep> offsetMap = {};
void addStep(TraceStep step) {
int offset = step.offset.value;
TraceStep existingStep = offsetMap[offset];
if (existingStep != null) {
// TODO(johnniwinther): Fix problems with reuse of JS nodes from
// templates.
if (identical(existingStep.node, step.node)) {
print('duplicate node: ${nodeToString(step.node)}');
} else {
print('duplicate offset: ${offset} : ${nodeToString(step.node)}');
print(' ${}:${existingStep.text}:${existingStep.offset}');
print(' ${}:${step.text}:${step.offset}');
offsetMap[offset] = step;
step.stack = stack.toList();
void pushBranch(branch) {
void popBranch() {
class TraceStep {
final kind;
final int id;
final node;
final Offset offset;
final List text;
final SourceLocation sourceLocation;
TraceStep next;
Map<dynamic, TraceStep> branchMap;
List stack;
TraceStep(this.kind,, this.node, this.offset, this.text,
String toString() => '<span style="background:${toColorCss(id)}">$id</span>';