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Unified Diff: packages/petitparser/lib/src/debug/profile.dart

Issue 2989763002: Update charted to 0.4.8 and roll (Closed)
Patch Set: Removed Cutch from list of reviewers Created 3 years, 5 months ago
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Index: packages/petitparser/lib/src/debug/profile.dart
diff --git a/packages/petitparser/lib/src/debug/profile.dart b/packages/petitparser/lib/src/debug/profile.dart
deleted file mode 100644
index b4e442479eea2c5b0a7b7da6cb5926c44f1b7953..0000000000000000000000000000000000000000
--- a/packages/petitparser/lib/src/debug/profile.dart
+++ /dev/null
@@ -1,47 +0,0 @@
-part of petitparser.debug;
-
-/// Returns a transformed [parser] that when being used measures
-/// the activation count and total time of each parser.
-///
-/// For example, the snippet
-///
-/// var parser = letter() & word().star();
-/// profile(parser).parse('f1234567890');
-///
-/// produces the following output:
-///
-/// 1 2006 Instance of 'SequenceParser'
-/// 1 697 Instance of 'PossessiveRepeatingParser'[0..*]
-/// 11 406 Instance of 'CharacterParser'[letter or digit expected]
-/// 1 947 Instance of 'CharacterParser'[letter expected]
-///
-/// The first number refers to the number of activations of each parser, and
-/// the second number is the microseconds spent in this parser and all its
-/// children.
-Parser profile(Parser root, [OutputHandler output = print]) {
- var count = new Map();
- var watch = new Map();
- var parsers = new List();
- return new ContinuationParser(transformParser(root, (parser) {
- parsers.add(parser);
- return new ContinuationParser(parser, (continuation, context) {
- count[parser]++;
- watch[parser].start();
- var result = continuation(context);
- watch[parser].stop();
- return result;
- });
- }), (continuation, context) {
- parsers.forEach((parser) {
- count[parser] = 0;
- watch[parser] = new Stopwatch();
- });
- var result = continuation(context);
- parsers.forEach((parser) {
- output('${count[parser]}\t'
- '${watch[parser].elapsedMicroseconds}\t'
- '$parser');
- });
- return result;
- });
-}
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