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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.WhitespaceToken = exports.URLToken = exports.SuffixMatchToken = exports.SubstringMatchToken = exports.StringValuedToken = exports.StringToken = exports.SemicolonToken = exports.PrefixMatchToken = exports.PercentageToken = exports.OpenSquareToken = exports.OpenParenToken = exports.OpenCurlyToken = exports.NumberToken = exports.InvalidCharacterError = exports.IncludeMatchToken = exports.IdentToken = exports.HashToken = exports.GroupingToken = exports.FunctionToken = exports.EOFToken = exports.DimensionToken = exports.DelimToken = exports.DashMatchToken = exports.CommaToken = exports.ColumnToken = exports.ColonToken = exports.CloseSquareToken = exports.CloseParenToken = exports.CloseCurlyToken = exports.CSSParserToken = exports.CDOToken = exports.CDCToken = exports.BadURLToken = exports.BadStringToken = exports.AtKeywordToken = void 0;
exports.tokenize = tokenize;
/* eslint-disable notice/notice */
/*
* The code in this file is licensed under the CC0 license.
* http://creativecommons.org/publicdomain/zero/1.0/
* It is free to use for any purpose. No attribution, permission, or reproduction of this license is required.
*/
// Original at https://github.com/tabatkins/parse-css
// Changes:
// - JS is replaced with TS.
// - Universal Module Definition wrapper is removed.
// - Everything not related to tokenizing - below the first exports block - is removed.
const between = function (num, first, last) {
return num >= first && num <= last;
};
function digit(code) {
return between(code, 0x30, 0x39);
}
function hexdigit(code) {
return digit(code) || between(code, 0x41, 0x46) || between(code, 0x61, 0x66);
}
function uppercaseletter(code) {
return between(code, 0x41, 0x5a);
}
function lowercaseletter(code) {
return between(code, 0x61, 0x7a);
}
function letter(code) {
return uppercaseletter(code) || lowercaseletter(code);
}
function nonascii(code) {
return code >= 0x80;
}
function namestartchar(code) {
return letter(code) || nonascii(code) || code === 0x5f;
}
function namechar(code) {
return namestartchar(code) || digit(code) || code === 0x2d;
}
function nonprintable(code) {
return between(code, 0, 8) || code === 0xb || between(code, 0xe, 0x1f) || code === 0x7f;
}
function newline(code) {
return code === 0xa;
}
function whitespace(code) {
return newline(code) || code === 9 || code === 0x20;
}
const maximumallowedcodepoint = 0x10ffff;
class InvalidCharacterError extends Error {
constructor(message) {
super(message);
this.name = 'InvalidCharacterError';
}
}
exports.InvalidCharacterError = InvalidCharacterError;
function preprocess(str) {
// Turn a string into an array of code points,
// following the preprocessing cleanup rules.
const codepoints = [];
for (let i = 0; i < str.length; i++) {
let code = str.charCodeAt(i);
if (code === 0xd && str.charCodeAt(i + 1) === 0xa) {
code = 0xa;
i++;
}
if (code === 0xd || code === 0xc) code = 0xa;
if (code === 0x0) code = 0xfffd;
if (between(code, 0xd800, 0xdbff) && between(str.charCodeAt(i + 1), 0xdc00, 0xdfff)) {
// Decode a surrogate pair into an astral codepoint.
const lead = code - 0xd800;
const trail = str.charCodeAt(i + 1) - 0xdc00;
code = Math.pow(2, 16) + lead * Math.pow(2, 10) + trail;
i++;
}
codepoints.push(code);
}
return codepoints;
}
function stringFromCode(code) {
if (code <= 0xffff) return String.fromCharCode(code);
// Otherwise, encode astral char as surrogate pair.
code -= Math.pow(2, 16);
const lead = Math.floor(code / Math.pow(2, 10)) + 0xd800;
const trail = code % Math.pow(2, 10) + 0xdc00;
return String.fromCharCode(lead) + String.fromCharCode(trail);
}
function tokenize(str1) {
const str = preprocess(str1);
let i = -1;
const tokens = [];
let code;
// Line number information.
let line = 0;
let column = 0;
// The only use of lastLineLength is in reconsume().
let lastLineLength = 0;
const incrLineno = function () {
line += 1;
lastLineLength = column;
column = 0;
};
const locStart = {
line: line,
column: column
};
const codepoint = function (i) {
if (i >= str.length) return -1;
return str[i];
};
const next = function (num) {
if (num === undefined) num = 1;
if (num > 3) throw 'Spec Error: no more than three codepoints of lookahead.';
return codepoint(i + num);
};
const consume = function (num) {
if (num === undefined) num = 1;
i += num;
code = codepoint(i);
if (newline(code)) incrLineno();else column += num;
// console.log('Consume '+i+' '+String.fromCharCode(code) + ' 0x' + code.toString(16));
return true;
};
const reconsume = function () {
i -= 1;
if (newline(code)) {
line -= 1;
column = lastLineLength;
} else {
column -= 1;
}
locStart.line = line;
locStart.column = column;
return true;
};
const eof = function (codepoint) {
if (codepoint === undefined) codepoint = code;
return codepoint === -1;
};
const donothing = function () {};
const parseerror = function () {
// Language bindings don't like writing to stdout!
// console.log('Parse error at index ' + i + ', processing codepoint 0x' + code.toString(16) + '.'); return true;
};
const consumeAToken = function () {
consumeComments();
consume();
if (whitespace(code)) {
while (whitespace(next())) consume();
return new WhitespaceToken();
} else if (code === 0x22) {
return consumeAStringToken();
} else if (code === 0x23) {
if (namechar(next()) || areAValidEscape(next(1), next(2))) {
const token = new HashToken('');
if (wouldStartAnIdentifier(next(1), next(2), next(3))) token.type = 'id';
token.value = consumeAName();
return token;
} else {
return new DelimToken(code);
}
} else if (code === 0x24) {
if (next() === 0x3d) {
consume();
return new SuffixMatchToken();
} else {
return new DelimToken(code);
}
} else if (code === 0x27) {
return consumeAStringToken();
} else if (code === 0x28) {
return new OpenParenToken();
} else if (code === 0x29) {
return new CloseParenToken();
} else if (code === 0x2a) {
if (next() === 0x3d) {
consume();
return new SubstringMatchToken();
} else {
return new DelimToken(code);
}
} else if (code === 0x2b) {
if (startsWithANumber()) {
reconsume();
return consumeANumericToken();
} else {
return new DelimToken(code);
}
} else if (code === 0x2c) {
return new CommaToken();
} else if (code === 0x2d) {
if (startsWithANumber()) {
reconsume();
return consumeANumericToken();
} else if (next(1) === 0x2d && next(2) === 0x3e) {
consume(2);
return new CDCToken();
} else if (startsWithAnIdentifier()) {
reconsume();
return consumeAnIdentlikeToken();
} else {
return new DelimToken(code);
}
} else if (code === 0x2e) {
if (startsWithANumber()) {
reconsume();
return consumeANumericToken();
} else {
return new DelimToken(code);
}
} else if (code === 0x3a) {
return new ColonToken();
} else if (code === 0x3b) {
return new SemicolonToken();
} else if (code === 0x3c) {
if (next(1) === 0x21 && next(2) === 0x2d && next(3) === 0x2d) {
consume(3);
return new CDOToken();
} else {
return new DelimToken(code);
}
} else if (code === 0x40) {
if (wouldStartAnIdentifier(next(1), next(2), next(3))) return new AtKeywordToken(consumeAName());else return new DelimToken(code);
} else if (code === 0x5b) {
return new OpenSquareToken();
} else if (code === 0x5c) {
if (startsWithAValidEscape()) {
reconsume();
return consumeAnIdentlikeToken();
} else {
parseerror();
return new DelimToken(code);
}
} else if (code === 0x5d) {
return new CloseSquareToken();
} else if (code === 0x5e) {
if (next() === 0x3d) {
consume();
return new PrefixMatchToken();
} else {
return new DelimToken(code);
}
} else if (code === 0x7b) {
return new OpenCurlyToken();
} else if (code === 0x7c) {
if (next() === 0x3d) {
consume();
return new DashMatchToken();
} else if (next() === 0x7c) {
consume();
return new ColumnToken();
} else {
return new DelimToken(code);
}
} else if (code === 0x7d) {
return new CloseCurlyToken();
} else if (code === 0x7e) {
if (next() === 0x3d) {
consume();
return new IncludeMatchToken();
} else {
return new DelimToken(code);
}
} else if (digit(code)) {
reconsume();
return consumeANumericToken();
} else if (namestartchar(code)) {
reconsume();
return consumeAnIdentlikeToken();
} else if (eof()) {
return new EOFToken();
} else {
return new DelimToken(code);
}
};
const consumeComments = function () {
while (next(1) === 0x2f && next(2) === 0x2a) {
consume(2);
while (true) {
consume();
if (code === 0x2a && next() === 0x2f) {
consume();
break;
} else if (eof()) {
parseerror();
return;
}
}
}
};
const consumeANumericToken = function () {
const num = consumeANumber();
if (wouldStartAnIdentifier(next(1), next(2), next(3))) {
const token = new DimensionToken();
token.value = num.value;
token.repr = num.repr;
token.type = num.type;
token.unit = consumeAName();
return token;
} else if (next() === 0x25) {
consume();
const token = new PercentageToken();
token.value = num.value;
token.repr = num.repr;
return token;
} else {
const token = new NumberToken();
token.value = num.value;
token.repr = num.repr;
token.type = num.type;
return token;
}
};
const consumeAnIdentlikeToken = function () {
const str = consumeAName();
if (str.toLowerCase() === 'url' && next() === 0x28) {
consume();
while (whitespace(next(1)) && whitespace(next(2))) consume();
if (next() === 0x22 || next() === 0x27) return new FunctionToken(str);else if (whitespace(next()) && (next(2) === 0x22 || next(2) === 0x27)) return new FunctionToken(str);else return consumeAURLToken();
} else if (next() === 0x28) {
consume();
return new FunctionToken(str);
} else {
return new IdentToken(str);
}
};
const consumeAStringToken = function (endingCodePoint) {
if (endingCodePoint === undefined) endingCodePoint = code;
let string = '';
while (consume()) {
if (code === endingCodePoint || eof()) {
return new StringToken(string);
} else if (newline(code)) {
parseerror();
reconsume();
return new BadStringToken();
} else if (code === 0x5c) {
if (eof(next())) donothing();else if (newline(next())) consume();else string += stringFromCode(consumeEscape());
} else {
string += stringFromCode(code);
}
}
throw new Error('Internal error');
};
const consumeAURLToken = function () {
const token = new URLToken('');
while (whitespace(next())) consume();
if (eof(next())) return token;
while (consume()) {
if (code === 0x29 || eof()) {
return token;
} else if (whitespace(code)) {
while (whitespace(next())) consume();
if (next() === 0x29 || eof(next())) {
consume();
return token;
} else {
consumeTheRemnantsOfABadURL();
return new BadURLToken();
}
} else if (code === 0x22 || code === 0x27 || code === 0x28 || nonprintable(code)) {
parseerror();
consumeTheRemnantsOfABadURL();
return new BadURLToken();
} else if (code === 0x5c) {
if (startsWithAValidEscape()) {
token.value += stringFromCode(consumeEscape());
} else {
parseerror();
consumeTheRemnantsOfABadURL();
return new BadURLToken();
}
} else {
token.value += stringFromCode(code);
}
}
throw new Error('Internal error');
};
const consumeEscape = function () {
// Assume the the current character is the \
// and the next code point is not a newline.
consume();
if (hexdigit(code)) {
// Consume 1-6 hex digits
const digits = [code];
for (let total = 0; total < 5; total++) {
if (hexdigit(next())) {
consume();
digits.push(code);
} else {
break;
}
}
if (whitespace(next())) consume();
let value = parseInt(digits.map(function (x) {
return String.fromCharCode(x);
}).join(''), 16);
if (value > maximumallowedcodepoint) value = 0xfffd;
return value;
} else if (eof()) {
return 0xfffd;
} else {
return code;
}
};
const areAValidEscape = function (c1, c2) {
if (c1 !== 0x5c) return false;
if (newline(c2)) return false;
return true;
};
const startsWithAValidEscape = function () {
return areAValidEscape(code, next());
};
const wouldStartAnIdentifier = function (c1, c2, c3) {
if (c1 === 0x2d) return namestartchar(c2) || c2 === 0x2d || areAValidEscape(c2, c3);else if (namestartchar(c1)) return true;else if (c1 === 0x5c) return areAValidEscape(c1, c2);else return false;
};
const startsWithAnIdentifier = function () {
return wouldStartAnIdentifier(code, next(1), next(2));
};
const wouldStartANumber = function (c1, c2, c3) {
if (c1 === 0x2b || c1 === 0x2d) {
if (digit(c2)) return true;
if (c2 === 0x2e && digit(c3)) return true;
return false;
} else if (c1 === 0x2e) {
if (digit(c2)) return true;
return false;
} else if (digit(c1)) {
return true;
} else {
return false;
}
};
const startsWithANumber = function () {
return wouldStartANumber(code, next(1), next(2));
};
const consumeAName = function () {
let result = '';
while (consume()) {
if (namechar(code)) {
result += stringFromCode(code);
} else if (startsWithAValidEscape()) {
result += stringFromCode(consumeEscape());
} else {
reconsume();
return result;
}
}
throw new Error('Internal parse error');
};
const consumeANumber = function () {
let repr = '';
let type = 'integer';
if (next() === 0x2b || next() === 0x2d) {
consume();
repr += stringFromCode(code);
}
while (digit(next())) {
consume();
repr += stringFromCode(code);
}
if (next(1) === 0x2e && digit(next(2))) {
consume();
repr += stringFromCode(code);
consume();
repr += stringFromCode(code);
type = 'number';
while (digit(next())) {
consume();
repr += stringFromCode(code);
}
}
const c1 = next(1),
c2 = next(2),
c3 = next(3);
if ((c1 === 0x45 || c1 === 0x65) && digit(c2)) {
consume();
repr += stringFromCode(code);
consume();
repr += stringFromCode(code);
type = 'number';
while (digit(next())) {
consume();
repr += stringFromCode(code);
}
} else if ((c1 === 0x45 || c1 === 0x65) && (c2 === 0x2b || c2 === 0x2d) && digit(c3)) {
consume();
repr += stringFromCode(code);
consume();
repr += stringFromCode(code);
consume();
repr += stringFromCode(code);
type = 'number';
while (digit(next())) {
consume();
repr += stringFromCode(code);
}
}
const value = convertAStringToANumber(repr);
return {
type: type,
value: value,
repr: repr
};
};
const convertAStringToANumber = function (string) {
// CSS's number rules are identical to JS, afaik.
return +string;
};
const consumeTheRemnantsOfABadURL = function () {
while (consume()) {
if (code === 0x29 || eof()) {
return;
} else if (startsWithAValidEscape()) {
consumeEscape();
donothing();
} else {
donothing();
}
}
};
let iterationCount = 0;
while (!eof(next())) {
tokens.push(consumeAToken());
iterationCount++;
if (iterationCount > str.length * 2) throw new Error("I'm infinite-looping!");
}
return tokens;
}
class CSSParserToken {
constructor() {
this.tokenType = '';
this.value = void 0;
}
toJSON() {
return {
token: this.tokenType
};
}
toString() {
return this.tokenType;
}
toSource() {
return '' + this;
}
}
exports.CSSParserToken = CSSParserToken;
class BadStringToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = 'BADSTRING';
}
}
exports.BadStringToken = BadStringToken;
class BadURLToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = 'BADURL';
}
}
exports.BadURLToken = BadURLToken;
class WhitespaceToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = 'WHITESPACE';
}
toString() {
return 'WS';
}
toSource() {
return ' ';
}
}
exports.WhitespaceToken = WhitespaceToken;
class CDOToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = 'CDO';
}
toSource() {
return '<!--';
}
}
exports.CDOToken = CDOToken;
class CDCToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = 'CDC';
}
toSource() {
return '-->';
}
}
exports.CDCToken = CDCToken;
class ColonToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = ':';
}
}
exports.ColonToken = ColonToken;
class SemicolonToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = ';';
}
}
exports.SemicolonToken = SemicolonToken;
class CommaToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = ',';
}
}
exports.CommaToken = CommaToken;
class GroupingToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.value = '';
this.mirror = '';
}
}
exports.GroupingToken = GroupingToken;
class OpenCurlyToken extends GroupingToken {
constructor() {
super();
this.tokenType = '{';
this.value = '{';
this.mirror = '}';
}
}
exports.OpenCurlyToken = OpenCurlyToken;
class CloseCurlyToken extends GroupingToken {
constructor() {
super();
this.tokenType = '}';
this.value = '}';
this.mirror = '{';
}
}
exports.CloseCurlyToken = CloseCurlyToken;
class OpenSquareToken extends GroupingToken {
constructor() {
super();
this.tokenType = '[';
this.value = '[';
this.mirror = ']';
}
}
exports.OpenSquareToken = OpenSquareToken;
class CloseSquareToken extends GroupingToken {
constructor() {
super();
this.tokenType = ']';
this.value = ']';
this.mirror = '[';
}
}
exports.CloseSquareToken = CloseSquareToken;
class OpenParenToken extends GroupingToken {
constructor() {
super();
this.tokenType = '(';
this.value = '(';
this.mirror = ')';
}
}
exports.OpenParenToken = OpenParenToken;
class CloseParenToken extends GroupingToken {
constructor() {
super();
this.tokenType = ')';
this.value = ')';
this.mirror = '(';
}
}
exports.CloseParenToken = CloseParenToken;
class IncludeMatchToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = '~=';
}
}
exports.IncludeMatchToken = IncludeMatchToken;
class DashMatchToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = '|=';
}
}
exports.DashMatchToken = DashMatchToken;
class PrefixMatchToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = '^=';
}
}
exports.PrefixMatchToken = PrefixMatchToken;
class SuffixMatchToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = '$=';
}
}
exports.SuffixMatchToken = SuffixMatchToken;
class SubstringMatchToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = '*=';
}
}
exports.SubstringMatchToken = SubstringMatchToken;
class ColumnToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = '||';
}
}
exports.ColumnToken = ColumnToken;
class EOFToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.tokenType = 'EOF';
}
toSource() {
return '';
}
}
exports.EOFToken = EOFToken;
class DelimToken extends CSSParserToken {
constructor(code) {
super();
this.tokenType = 'DELIM';
this.value = '';
this.value = stringFromCode(code);
}
toString() {
return 'DELIM(' + this.value + ')';
}
toJSON() {
const json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
return json;
}
toSource() {
if (this.value === '\\') return '\\\n';else return this.value;
}
}
exports.DelimToken = DelimToken;
class StringValuedToken extends CSSParserToken {
constructor(...args) {
super(...args);
this.value = '';
}
ASCIIMatch(str) {
return this.value.toLowerCase() === str.toLowerCase();
}
toJSON() {
const json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
return json;
}
}
exports.StringValuedToken = StringValuedToken;
class IdentToken extends StringValuedToken {
constructor(val) {
super();
this.tokenType = 'IDENT';
this.value = val;
}
toString() {
return 'IDENT(' + this.value + ')';
}
toSource() {
return escapeIdent(this.value);
}
}
exports.IdentToken = IdentToken;
class FunctionToken extends StringValuedToken {
constructor(val) {
super();
this.tokenType = 'FUNCTION';
this.mirror = void 0;
this.value = val;
this.mirror = ')';
}
toString() {
return 'FUNCTION(' + this.value + ')';
}
toSource() {
return escapeIdent(this.value) + '(';
}
}
exports.FunctionToken = FunctionToken;
class AtKeywordToken extends StringValuedToken {
constructor(val) {
super();
this.tokenType = 'AT-KEYWORD';
this.value = val;
}
toString() {
return 'AT(' + this.value + ')';
}
toSource() {
return '@' + escapeIdent(this.value);
}
}
exports.AtKeywordToken = AtKeywordToken;
class HashToken extends StringValuedToken {
constructor(val) {
super();
this.tokenType = 'HASH';
this.type = void 0;
this.value = val;
this.type = 'unrestricted';
}
toString() {
return 'HASH(' + this.value + ')';
}
toJSON() {
const json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
json.type = this.type;
return json;
}
toSource() {
if (this.type === 'id') return '#' + escapeIdent(this.value);else return '#' + escapeHash(this.value);
}
}
exports.HashToken = HashToken;
class StringToken extends StringValuedToken {
constructor(val) {
super();
this.tokenType = 'STRING';
this.value = val;
}
toString() {
return '"' + escapeString(this.value) + '"';
}
}
exports.StringToken = StringToken;
class URLToken extends StringValuedToken {
constructor(val) {
super();
this.tokenType = 'URL';
this.value = val;
}
toString() {
return 'URL(' + this.value + ')';
}
toSource() {
return 'url("' + escapeString(this.value) + '")';
}
}
exports.URLToken = URLToken;
class NumberToken extends CSSParserToken {
constructor() {
super();
this.tokenType = 'NUMBER';
this.type = void 0;
this.repr = void 0;
this.type = 'integer';
this.repr = '';
}
toString() {
if (this.type === 'integer') return 'INT(' + this.value + ')';
return 'NUMBER(' + this.value + ')';
}
toJSON() {
const json = super.toJSON();
json.value = this.value;
json.type = this.type;
json.repr = this.repr;
return json;
}
toSource() {
return this.repr;
}
}
exports.NumberToken = NumberToken;
class PercentageToken extends CSSParserToken {
constructor() {
super();
this.tokenType = 'PERCENTAGE';
this.repr = void 0;
this.repr = '';
}
toString() {
return 'PERCENTAGE(' + this.value + ')';
}
toJSON() {
const json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
json.repr = this.repr;
return json;
}
toSource() {
return this.repr + '%';
}
}
exports.PercentageToken = PercentageToken;
class DimensionToken extends CSSParserToken {
constructor() {
super();
this.tokenType = 'DIMENSION';
this.type = void 0;
this.repr = void 0;
this.unit = void 0;
this.type = 'integer';
this.repr = '';
this.unit = '';
}
toString() {
return 'DIM(' + this.value + ',' + this.unit + ')';
}
toJSON() {
const json = this.constructor.prototype.constructor.prototype.toJSON.call(this);
json.value = this.value;
json.type = this.type;
json.repr = this.repr;
json.unit = this.unit;
return json;
}
toSource() {
const source = this.repr;
let unit = escapeIdent(this.unit);
if (unit[0].toLowerCase() === 'e' && (unit[1] === '-' || between(unit.charCodeAt(1), 0x30, 0x39))) {
// Unit is ambiguous with scinot
// Remove the leading "e", replace with escape.
unit = '\\65 ' + unit.slice(1, unit.length);
}
return source + unit;
}
}
exports.DimensionToken = DimensionToken;
function escapeIdent(string) {
string = '' + string;
let result = '';
const firstcode = string.charCodeAt(0);
for (let i = 0; i < string.length; i++) {
const code = string.charCodeAt(i);
if (code === 0x0) throw new InvalidCharacterError('Invalid character: the input contains U+0000.');
if (between(code, 0x1, 0x1f) || code === 0x7f || i === 0 && between(code, 0x30, 0x39) || i === 1 && between(code, 0x30, 0x39) && firstcode === 0x2d) result += '\\' + code.toString(16) + ' ';else if (code >= 0x80 || code === 0x2d || code === 0x5f || between(code, 0x30, 0x39) || between(code, 0x41, 0x5a) || between(code, 0x61, 0x7a)) result += string[i];else result += '\\' + string[i];
}
return result;
}
function escapeHash(string) {
// Escapes the contents of "unrestricted"-type hash tokens.
// Won't preserve the ID-ness of "id"-type hash tokens;
// use escapeIdent() for that.
string = '' + string;
let result = '';
for (let i = 0; i < string.length; i++) {
const code = string.charCodeAt(i);
if (code === 0x0) throw new InvalidCharacterError('Invalid character: the input contains U+0000.');
if (code >= 0x80 || code === 0x2d || code === 0x5f || between(code, 0x30, 0x39) || between(code, 0x41, 0x5a) || between(code, 0x61, 0x7a)) result += string[i];else result += '\\' + code.toString(16) + ' ';
}
return result;
}
function escapeString(string) {
string = '' + string;
let result = '';
for (let i = 0; i < string.length; i++) {
const code = string.charCodeAt(i);
if (code === 0x0) throw new InvalidCharacterError('Invalid character: the input contains U+0000.');
if (between(code, 0x1, 0x1f) || code === 0x7f) result += '\\' + code.toString(16) + ' ';else if (code === 0x22 || code === 0x5c) result += '\\' + string[i];else result += string[i];
}
return result;
}