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implementation comment

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This commit is contained in:
Arthur Ozga 2017-08-04 15:51:06 -07:00
parent efdbebaebb
commit 777bc575ac
1 changed files with 8 additions and 0 deletions
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8
src/services/formatting/formatting.ts
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@ -1168,6 +1168,14 @@ namespace ts.formatting {
}
export function getRangeOfEnclosingComment(sourceFile: SourceFile, position: number, onlyMultiLine: boolean): CommentRange | undefined {
// Considering a fixed position,
// - trailing comments are those following and on the same line as the position.
// - leading comments are those in the range [position, start of next non-trivia token)
// that are not trailing comments of that position.
//
// Note, `node.start` is the start-position of the first comment following the previous
// token that is not a trailing comment, so the leading and trailing comments of all
// tokens contain all comments in a sourcefile disjointly.
const precedingToken = findPrecedingToken(position, sourceFile);
const trailingRangesOfPreviousToken = precedingToken && getTrailingCommentRanges(sourceFile.text, precedingToken.end);
const leadingCommentRangesOfNextToken = getLeadingCommentRangesOfNode(getTokenAtPosition(sourceFile, position, /*includeJsDocComment*/ false), sourceFile);