Linter Demo

Errors: 0

Warnings: 1

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

// Copyright (c) 2014, 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 tracer; import '../compiler.dart' as api; import 'dart:async' show EventSink; import 'ssa/ssa.dart' as ssa; import 'ssa/ssa_tracer.dart' show HTracer; import 'cps_ir/cps_ir_nodes.dart' as cps_ir; import 'cps_ir/cps_ir_tracer.dart' show IRTracer; import 'tree_ir/tree_ir_nodes.dart' as tree_ir; import 'tree_ir/tree_ir_tracer.dart' show TreeTracer; import 'util/util.dart' show Indentation; import 'dart2jslib.dart'; /** * If non-null, we only trace methods whose name match the regexp defined by the * given pattern. */ const String TRACE_FILTER_PATTERN = const String.fromEnvironment("DUMP_IR"); final RegExp TRACE_FILTER = TRACE_FILTER_PATTERN == null ? null : new RegExp(TRACE_FILTER_PATTERN); /** * Dumps the intermediate representation after each phase in a format * readable by IR Hydra. */ class Tracer extends TracerUtil { final Compiler compiler; ItemCompilationContext context; bool traceActive = false; final EventSink<String> output; final bool isEnabled = TRACE_FILTER != null; Tracer(Compiler compiler, api.CompilerOutputProvider outputProvider) : this.compiler = compiler, output = TRACE_FILTER != null ? outputProvider('dart', 'cfg') : null; void traceCompilation(String methodName, ItemCompilationContext compilationContext) { if (!isEnabled) return; traceActive = TRACE_FILTER.hasMatch(methodName); if (!traceActive) return; this.context = compilationContext; tag("compilation", () { printProperty("name", methodName); printProperty("method", methodName); printProperty("date", new DateTime.now().millisecondsSinceEpoch); }); } void traceGraph(String name, var irObject) { if (!traceActive) return; if (irObject is ssa.HGraph) { new HTracer(output, compiler, context).traceGraph(name, irObject); } else if (irObject is cps_ir.RootNode) { new IRTracer(output).traceGraph(name, irObject); } else if (irObject is tree_ir.RootNode) { new TreeTracer(output).traceGraph(name, irObject); } } void close() { if (output != null) { output.close(); } } } abstract class TracerUtil { EventSink<String> get output; final Indentation _ind = new Indentation(); void tag(String tagName, Function f) { println("begin_$tagName"); _ind.indentBlock(f); println("end_$tagName"); } void println(String string) { addIndent(); add(string); add("\n"); } void printEmptyProperty(String propertyName) { println(propertyName); } String formatPrty(x) { if (x is num) { return '${x}'; } else if (x is String) { return '"${x}"'; } else if (x is Iterable) { return x.map((s) => formatPrty(s)).join(' '); } else { throw "invalid property type: ${x}"; } } void printProperty(String propertyName, value) { println("$propertyName ${formatPrty(value)}"); } void add(String string) { output.add(string); } void addIndent() { add(_ind.indentation); } }