languages/dart-sdk
languages/dart-sdk
1
0
Fork 0
mirror of https://github.com/dart-lang/sdk synced 2024-09-20 23:51:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

switch perf tool to use scanner in front_end

Browse source 
R=paulberry@google.com

Review URL: https://codereview.chromium.org/2507093003 .
This commit is contained in:
Sigmund Cherem 2016-11-16 11:13:20 -08:00
parent 226e47a127
commit 618cbad43a
1 changed files with 16 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
pkg/front_end/tool/perf.dart
View file

@ -9,15 +9,12 @@ import 'dart:async';
import 'dart:io' show exit, stderr;
import 'package:analyzer/dart/ast/ast.dart';
import 'package:analyzer/dart/ast/token.dart';
import 'package:analyzer/error/listener.dart';
import 'package:analyzer/file_system/file_system.dart' show ResourceUriResolver;
import 'package:analyzer/file_system/physical_file_system.dart'
show PhysicalResourceProvider;
import 'package:analyzer/source/package_map_resolver.dart';
import 'package:analyzer/src/context/builder.dart';
import 'package:analyzer/src/dart/scanner/reader.dart';
import 'package:analyzer/src/dart/scanner/scanner.dart';
import 'package:analyzer/src/dart/sdk/sdk.dart' show FolderBasedDartSdk;
import 'package:analyzer/src/generated/parser.dart';
import 'package:analyzer/src/generated/source.dart';
@ -26,6 +23,10 @@ import 'package:kernel/analyzer/loader.dart';
import 'package:kernel/kernel.dart';
import 'package:package_config/discovery.dart';
import 'package:front_end/src/scanner/reader.dart';
import 'package:front_end/src/scanner/scanner.dart';
import 'package:front_end/src/scanner/token.dart';
/// Cumulative total number of chars scanned.
int scanTotalChars = 0;
@ -205,13 +206,23 @@ Token tokenize(Source source) {
scanTotalChars += contents.length;
// TODO(sigmund): is there a way to scan from a random-access-file without
// first converting to String?
var scanner = new Scanner(source, new CharSequenceReader(contents),
AnalysisErrorListener.NULL_LISTENER)..preserveComments = false;
var scanner = new _Scanner(contents);
var token = scanner.tokenize();
scanTimer.stop();
return token;
}
class _Scanner extends Scanner {
_Scanner(String contents) : super(new CharSequenceReader(contents)) {
preserveComments = false;
}
@override
void reportError(errorCode, int offset, List<Object> arguments) {
// ignore errors.
}
}
/// Report that metric [name] took [time] micro-seconds to process
/// [scanTotalChars] characters.
void report(String name, int time) {