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simplify pragma comment parsing (#31144)

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* simplify pragma parsing

* use emptyArray
This commit is contained in:
Klaus Meinhardt
2019-04-29 23:17:49 +02:00
committed by Wesley Wigham
parent 7e135e7060
commit de9b91f46a
1 changed files with 1 additions and 16 deletions
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17
src/compiler/parser.ts
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@@ -7782,24 +7782,9 @@ namespace ts {
/*@internal*/
export function processCommentPragmas(context: PragmaContext, sourceText: string): void {
const triviaScanner = createScanner(context.languageVersion, /*skipTrivia*/ false, LanguageVariant.Standard, sourceText);
const pragmas: PragmaPseudoMapEntry[] = [];
// Keep scanning all the leading trivia in the file until we get to something that
// isn't trivia. Any single line comment will be analyzed to see if it is a
// reference comment.
while (true) {
const kind = triviaScanner.scan();
if (!isTrivia(kind)) {
break;
}
const range = {
kind: <SyntaxKind.SingleLineCommentTrivia | SyntaxKind.MultiLineCommentTrivia>triviaScanner.getToken(),
pos: triviaScanner.getTokenPos(),
end: triviaScanner.getTextPos(),
};
for (const range of getLeadingCommentRanges(sourceText, 0) || emptyArray) {
const comment = sourceText.substring(range.pos, range.end);
extractPragmas(pragmas, range, comment);
}