Function scanHexDigits

test/fixtures/snapshot/typescript.js:11014–11054

(minCount, scanAsManyAsPossible, canHaveSeparators)

            return scanHexDigits(/*minCount*/ count, /*scanAsManyAsPossible*/ true, canHaveSeparators);
        }
        function scanHexDigits(minCount, scanAsManyAsPossible, canHaveSeparators) {
            var valueChars = [];
            var allowSeparator = false;
            var isPreviousTokenSeparator = false;
            while (valueChars.length < minCount || scanAsManyAsPossible) {
                var ch = text.charCodeAt(pos);
                if (canHaveSeparators && ch === 95 /* CharacterCodes._ */) {
                    tokenFlags |= 512 /* TokenFlags.ContainsSeparator */;
                    if (allowSeparator) {
                        allowSeparator = false;
                        isPreviousTokenSeparator = true;
                    }
                    else if (isPreviousTokenSeparator) {
                        error(ts.Diagnostics.Multiple_consecutive_numeric_separators_are_not_permitted, pos, 1);
                    }
                    else {
                        error(ts.Diagnostics.Numeric_separators_are_not_allowed_here, pos, 1);
                    }
                    pos++;
                    continue;
                }
                allowSeparator = canHaveSeparators;
                if (ch >= 65 /* CharacterCodes.A */ && ch <= 70 /* CharacterCodes.F */) {
                    ch += 97 /* CharacterCodes.a */ - 65 /* CharacterCodes.A */; // standardize hex literals to lowercase
                }
                else if (!((ch >= 48 /* CharacterCodes._0 */ && ch <= 57 /* CharacterCodes._9 */) ||
                    (ch >= 97 /* CharacterCodes.a */ && ch <= 102 /* CharacterCodes.f */))) {
                    break;
                }
                valueChars.push(ch);
                pos++;
                isPreviousTokenSeparator = false;
            }
            if (valueChars.length < minCount) {
                valueChars = [];
            }
            if (text.charCodeAt(pos - 1) === 95 /* CharacterCodes._ */) {
                error(ts.Diagnostics.Numeric_separators_are_not_allowed_here, pos - 1, 1);
            }
            return String.fromCharCode.apply(String, valueChars);
        }
        function scanString(jsxAttributeString) {
            if (jsxAttributeString === void 0) { jsxAttributeString = false; }
            var quote = text.charCodeAt(pos);