Function iterateCommentRanges

test/fixtures/snapshot/typescript.js:10639–10735

* Invokes a callback for each comment range following the provided position. * * Single-line comment ranges include the leading double-slash characters but not the ending * line break. Multi-line comment ranges include the leading slash-asterisk and trailing * asterisk-slash char

(reduce, text, pos, trailing, cb, state, initial)

     *      return value of the callback.
     */
    function iterateCommentRanges(reduce, text, pos, trailing, cb, state, initial) {
        var pendingPos;
        var pendingEnd;
        var pendingKind;
        var pendingHasTrailingNewLine;
        var hasPendingCommentRange = false;
        var collecting = trailing;
        var accumulator = initial;
        if (pos === 0) {
            collecting = true;
            var shebang = getShebang(text);
            if (shebang) {
                pos = shebang.length;
            }
        }
        scan: while (pos >= 0 && pos < text.length) {
            var ch = text.charCodeAt(pos);
            switch (ch) {
                case 13 /* CharacterCodes.carriageReturn */:
                    if (text.charCodeAt(pos + 1) === 10 /* CharacterCodes.lineFeed */) {
                        pos++;
                    }
                // falls through
                case 10 /* CharacterCodes.lineFeed */:
                    pos++;
                    if (trailing) {
                        break scan;
                    }
                    collecting = true;
                    if (hasPendingCommentRange) {
                        pendingHasTrailingNewLine = true;
                    }
                    continue;
                case 9 /* CharacterCodes.tab */:
                case 11 /* CharacterCodes.verticalTab */:
                case 12 /* CharacterCodes.formFeed */:
                case 32 /* CharacterCodes.space */:
                    pos++;
                    continue;
                case 47 /* CharacterCodes.slash */:
                    var nextChar = text.charCodeAt(pos + 1);
                    var hasTrailingNewLine = false;
                    if (nextChar === 47 /* CharacterCodes.slash */ || nextChar === 42 /* CharacterCodes.asterisk */) {
                        var kind = nextChar === 47 /* CharacterCodes.slash */ ? 2 /* SyntaxKind.SingleLineCommentTrivia */ : 3 /* SyntaxKind.MultiLineCommentTrivia */;
                        var startPos = pos;
                        pos += 2;
                        if (nextChar === 47 /* CharacterCodes.slash */) {
                            while (pos < text.length) {
                                if (isLineBreak(text.charCodeAt(pos))) {
                                    hasTrailingNewLine = true;
                                    break;
                                }
                                pos++;
                            }
                        }
                        else {
                            while (pos < text.length) {
                                if (text.charCodeAt(pos) === 42 /* CharacterCodes.asterisk */ && text.charCodeAt(pos + 1) === 47 /* CharacterCodes.slash */) {