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No longer create an entire scanner when performing line classification.

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This commit is contained in:
Daniel Rosenwasser 2014-09-23 13:54:56 -07:00
parent d93c28efb2
commit 1c73189fa1
1 changed files with 6 additions and 5 deletions
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11
src/services/services.ts
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@ -4050,13 +4050,13 @@ module ts {
/// Classifier
export function createClassifier(host: Logger): Classifier {
var scanner: Scanner;
var noRegexTable: boolean[];
var scanner = createScanner(ScriptTarget.ES5, /*skipTrivia*/ false);
/// We do not have a full parser support to know when we should parse a regex or not
/// If we consider every slash token to be a regex, we could be missing cases like "1/2/3", where
/// we have a series of divide operator. this list allows us to be more accurate by ruling out
/// locations where a regexp cannot exist.
var noRegexTable: boolean[];
if (!noRegexTable) {
noRegexTable = [];
noRegexTable[SyntaxKind.Identifier] = true;
@ -4077,7 +4077,7 @@ module ts {
var offset = 0;
var lastTokenOrCommentEnd = 0;
var lastNonTriviaToken = SyntaxKind.Unknown;
// If we're in a string literal, then prepend: "\
// (and a newline). That way when we lex we'll think we're still in a string literal.
//
@ -4098,13 +4098,14 @@ module ts {
break;
}
scanner.setText(text);
var result: ClassificationResult = {
finalLexState: EndOfLineState.Start,
entries: []
};
scanner = createScanner(ScriptTarget.ES5, /*skipTrivia*/ false, text, /*onError*/ undefined, /*onComment*/ undefined);
var token = SyntaxKind.Unknown;
do {
token = scanner.scan();