node_modules/vscode-css-languageservice/lib/esm/parser/cssScanner.js - devtools/devtools-frontend - Git at Google

 /*---------------------------------------------------------------------------------------------
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 'use strict';
 export var TokenType;
 (function (TokenType) {
     TokenType[TokenType["Ident"] = 0] = "Ident";
     TokenType[TokenType["AtKeyword"] = 1] = "AtKeyword";
     TokenType[TokenType["String"] = 2] = "String";
     TokenType[TokenType["BadString"] = 3] = "BadString";
     TokenType[TokenType["UnquotedString"] = 4] = "UnquotedString";
     TokenType[TokenType["Hash"] = 5] = "Hash";
     TokenType[TokenType["Num"] = 6] = "Num";
     TokenType[TokenType["Percentage"] = 7] = "Percentage";
     TokenType[TokenType["Dimension"] = 8] = "Dimension";
     TokenType[TokenType["UnicodeRange"] = 9] = "UnicodeRange";
     TokenType[TokenType["CDO"] = 10] = "CDO";
     TokenType[TokenType["CDC"] = 11] = "CDC";
     TokenType[TokenType["Colon"] = 12] = "Colon";
     TokenType[TokenType["SemiColon"] = 13] = "SemiColon";
     TokenType[TokenType["CurlyL"] = 14] = "CurlyL";
     TokenType[TokenType["CurlyR"] = 15] = "CurlyR";
     TokenType[TokenType["ParenthesisL"] = 16] = "ParenthesisL";
     TokenType[TokenType["ParenthesisR"] = 17] = "ParenthesisR";
     TokenType[TokenType["BracketL"] = 18] = "BracketL";
     TokenType[TokenType["BracketR"] = 19] = "BracketR";
     TokenType[TokenType["Whitespace"] = 20] = "Whitespace";
     TokenType[TokenType["Includes"] = 21] = "Includes";
     TokenType[TokenType["Dashmatch"] = 22] = "Dashmatch";
     TokenType[TokenType["SubstringOperator"] = 23] = "SubstringOperator";
     TokenType[TokenType["PrefixOperator"] = 24] = "PrefixOperator";
     TokenType[TokenType["SuffixOperator"] = 25] = "SuffixOperator";
     TokenType[TokenType["Delim"] = 26] = "Delim";
     TokenType[TokenType["EMS"] = 27] = "EMS";
     TokenType[TokenType["EXS"] = 28] = "EXS";
     TokenType[TokenType["Length"] = 29] = "Length";
     TokenType[TokenType["Angle"] = 30] = "Angle";
     TokenType[TokenType["Time"] = 31] = "Time";
     TokenType[TokenType["Freq"] = 32] = "Freq";
     TokenType[TokenType["Exclamation"] = 33] = "Exclamation";
     TokenType[TokenType["Resolution"] = 34] = "Resolution";
     TokenType[TokenType["Comma"] = 35] = "Comma";
     TokenType[TokenType["Charset"] = 36] = "Charset";
     TokenType[TokenType["EscapedJavaScript"] = 37] = "EscapedJavaScript";
     TokenType[TokenType["BadEscapedJavaScript"] = 38] = "BadEscapedJavaScript";
     TokenType[TokenType["Comment"] = 39] = "Comment";
     TokenType[TokenType["SingleLineComment"] = 40] = "SingleLineComment";
     TokenType[TokenType["EOF"] = 41] = "EOF";
     TokenType[TokenType["CustomToken"] = 42] = "CustomToken";
 })(TokenType || (TokenType = {}));
 var MultiLineStream = /** @class */ (function () {
     function MultiLineStream(source) {
         this.source = source;
         this.len = source.length;
         this.position = 0;
     }
     MultiLineStream.prototype.substring = function (from, to) {
         if (to === void 0) { to = this.position; }
         return this.source.substring(from, to);
     };
     MultiLineStream.prototype.eos = function () {
         return this.len <= this.position;
     };
     MultiLineStream.prototype.pos = function () {
         return this.position;
     };
     MultiLineStream.prototype.goBackTo = function (pos) {
         this.position = pos;
     };
     MultiLineStream.prototype.goBack = function (n) {
         this.position -= n;
     };
     MultiLineStream.prototype.advance = function (n) {
         this.position += n;
     };
     MultiLineStream.prototype.nextChar = function () {
         return this.source.charCodeAt(this.position++) || 0;
     };
     MultiLineStream.prototype.peekChar = function (n) {
         if (n === void 0) { n = 0; }
         return this.source.charCodeAt(this.position + n) || 0;
     };
     MultiLineStream.prototype.lookbackChar = function (n) {
         if (n === void 0) { n = 0; }
         return this.source.charCodeAt(this.position - n) || 0;
     };
     MultiLineStream.prototype.advanceIfChar = function (ch) {
         if (ch === this.source.charCodeAt(this.position)) {
             this.position++;
             return true;
         }
         return false;
     };
     MultiLineStream.prototype.advanceIfChars = function (ch) {
         if (this.position + ch.length > this.source.length) {
             return false;
         }
         var i = 0;
         for (; i < ch.length; i++) {
             if (this.source.charCodeAt(this.position + i) !== ch[i]) {
                 return false;
             }
         }
         this.advance(i);
         return true;
     };
     MultiLineStream.prototype.advanceWhileChar = function (condition) {
         var posNow = this.position;
         while (this.position < this.len && condition(this.source.charCodeAt(this.position))) {
             this.position++;
         }
         return this.position - posNow;
     };
     return MultiLineStream;
 }());
 export { MultiLineStream };
 var _a = 'a'.charCodeAt(0);
 var _f = 'f'.charCodeAt(0);
 var _z = 'z'.charCodeAt(0);
 var _A = 'A'.charCodeAt(0);
 var _F = 'F'.charCodeAt(0);
 var _Z = 'Z'.charCodeAt(0);
 var _0 = '0'.charCodeAt(0);
 var _9 = '9'.charCodeAt(0);
 var _TLD = '~'.charCodeAt(0);
 var _HAT = '^'.charCodeAt(0);
 var _EQS = '='.charCodeAt(0);
 var _PIP = '|'.charCodeAt(0);
 var _MIN = '-'.charCodeAt(0);
 var _USC = '_'.charCodeAt(0);
 var _PRC = '%'.charCodeAt(0);
 var _MUL = '*'.charCodeAt(0);
 var _LPA = '('.charCodeAt(0);
 var _RPA = ')'.charCodeAt(0);
 var _LAN = '<'.charCodeAt(0);
 var _RAN = '>'.charCodeAt(0);
 var _ATS = '@'.charCodeAt(0);
 var _HSH = '#'.charCodeAt(0);
 var _DLR = '$'.charCodeAt(0);
 var _BSL = '\\'.charCodeAt(0);
 var _FSL = '/'.charCodeAt(0);
 var _NWL = '\n'.charCodeAt(0);
 var _CAR = '\r'.charCodeAt(0);
 var _LFD = '\f'.charCodeAt(0);
 var _DQO = '"'.charCodeAt(0);
 var _SQO = '\''.charCodeAt(0);
 var _WSP = ' '.charCodeAt(0);
 var _TAB = '\t'.charCodeAt(0);
 var _SEM = ';'.charCodeAt(0);
 var _COL = ':'.charCodeAt(0);
 var _CUL = '{'.charCodeAt(0);
 var _CUR = '}'.charCodeAt(0);
 var _BRL = '['.charCodeAt(0);
 var _BRR = ']'.charCodeAt(0);
 var _CMA = ','.charCodeAt(0);
 var _DOT = '.'.charCodeAt(0);
 var _BNG = '!'.charCodeAt(0);
 var staticTokenTable = {};
 staticTokenTable[_SEM] = TokenType.SemiColon;
 staticTokenTable[_COL] = TokenType.Colon;
 staticTokenTable[_CUL] = TokenType.CurlyL;
 staticTokenTable[_CUR] = TokenType.CurlyR;
 staticTokenTable[_BRR] = TokenType.BracketR;
 staticTokenTable[_BRL] = TokenType.BracketL;
 staticTokenTable[_LPA] = TokenType.ParenthesisL;
 staticTokenTable[_RPA] = TokenType.ParenthesisR;
 staticTokenTable[_CMA] = TokenType.Comma;
 var staticUnitTable = {};
 staticUnitTable['em'] = TokenType.EMS;
 staticUnitTable['ex'] = TokenType.EXS;
 staticUnitTable['px'] = TokenType.Length;
 staticUnitTable['cm'] = TokenType.Length;
 staticUnitTable['mm'] = TokenType.Length;
 staticUnitTable['in'] = TokenType.Length;
 staticUnitTable['pt'] = TokenType.Length;
 staticUnitTable['pc'] = TokenType.Length;
 staticUnitTable['deg'] = TokenType.Angle;
 staticUnitTable['rad'] = TokenType.Angle;
 staticUnitTable['grad'] = TokenType.Angle;
 staticUnitTable['ms'] = TokenType.Time;
 staticUnitTable['s'] = TokenType.Time;
 staticUnitTable['hz'] = TokenType.Freq;
 staticUnitTable['khz'] = TokenType.Freq;
 staticUnitTable['%'] = TokenType.Percentage;
 staticUnitTable['fr'] = TokenType.Percentage;
 staticUnitTable['dpi'] = TokenType.Resolution;
 staticUnitTable['dpcm'] = TokenType.Resolution;
 var Scanner = /** @class */ (function () {
     function Scanner() {
         this.stream = new MultiLineStream('');
         this.ignoreComment = true;
         this.ignoreWhitespace = true;
         this.inURL = false;
     }
     Scanner.prototype.setSource = function (input) {
         this.stream = new MultiLineStream(input);
     };
     Scanner.prototype.finishToken = function (offset, type, text) {
         return {
             offset: offset,
             len: this.stream.pos() - offset,
             type: type,
             text: text || this.stream.substring(offset)
         };
     };
     Scanner.prototype.substring = function (offset, len) {
         return this.stream.substring(offset, offset + len);
     };
     Scanner.prototype.pos = function () {
         return this.stream.pos();
     };
     Scanner.prototype.goBackTo = function (pos) {
         this.stream.goBackTo(pos);
     };
     Scanner.prototype.scanUnquotedString = function () {
         var offset = this.stream.pos();
         var content = [];
         if (this._unquotedString(content)) {
             return this.finishToken(offset, TokenType.UnquotedString, content.join(''));
         }
         return null;
     };
     Scanner.prototype.scan = function () {
         // processes all whitespaces and comments
         var triviaToken = this.trivia();
         if (triviaToken !== null) {
             return triviaToken;
         }
         var offset = this.stream.pos();
         // End of file/input
         if (this.stream.eos()) {
             return this.finishToken(offset, TokenType.EOF);
         }
         return this.scanNext(offset);
     };
     Scanner.prototype.scanNext = function (offset) {
         // CDO <!--
         if (this.stream.advanceIfChars([_LAN, _BNG, _MIN, _MIN])) {
             return this.finishToken(offset, TokenType.CDO);
         }
         // CDC -->
         if (this.stream.advanceIfChars([_MIN, _MIN, _RAN])) {
             return this.finishToken(offset, TokenType.CDC);
         }
         var content = [];
         if (this.ident(content)) {
             return this.finishToken(offset, TokenType.Ident, content.join(''));
         }
         // at-keyword
         if (this.stream.advanceIfChar(_ATS)) {
             content = ['@'];
             if (this._name(content)) {
                 var keywordText = content.join('');
                 if (keywordText === '@charset') {
                     return this.finishToken(offset, TokenType.Charset, keywordText);
                 }
                 return this.finishToken(offset, TokenType.AtKeyword, keywordText);
             }
             else {
                 return this.finishToken(offset, TokenType.Delim);
             }
         }
         // hash
         if (this.stream.advanceIfChar(_HSH)) {
             content = ['#'];
             if (this._name(content)) {
                 return this.finishToken(offset, TokenType.Hash, content.join(''));
             }
             else {
                 return this.finishToken(offset, TokenType.Delim);
             }
         }
         // Important
         if (this.stream.advanceIfChar(_BNG)) {
             return this.finishToken(offset, TokenType.Exclamation);
         }
         // Numbers
         if (this._number()) {
             var pos = this.stream.pos();
             content = [this.stream.substring(offset, pos)];
             if (this.stream.advanceIfChar(_PRC)) {
                 // Percentage 43%
                 return this.finishToken(offset, TokenType.Percentage);
             }
             else if (this.ident(content)) {
                 var dim = this.stream.substring(pos).toLowerCase();
                 var tokenType_1 = staticUnitTable[dim];
                 if (typeof tokenType_1 !== 'undefined') {
                     // Known dimension 43px
                     return this.finishToken(offset, tokenType_1, content.join(''));
                 }
                 else {
                     // Unknown dimension 43ft
                     return this.finishToken(offset, TokenType.Dimension, content.join(''));
                 }
             }
             return this.finishToken(offset, TokenType.Num);
         }
         // String, BadString
         content = [];
         var tokenType = this._string(content);
         if (tokenType !== null) {
             return this.finishToken(offset, tokenType, content.join(''));
         }
         // single character tokens
         tokenType = staticTokenTable[this.stream.peekChar()];
         if (typeof tokenType !== 'undefined') {
             this.stream.advance(1);
             return this.finishToken(offset, tokenType);
         }
         // includes ~=
         if (this.stream.peekChar(0) === _TLD && this.stream.peekChar(1) === _EQS) {
             this.stream.advance(2);
             return this.finishToken(offset, TokenType.Includes);
         }
         // DashMatch |=
         if (this.stream.peekChar(0) === _PIP && this.stream.peekChar(1) === _EQS) {
             this.stream.advance(2);
             return this.finishToken(offset, TokenType.Dashmatch);
         }
         // Substring operator *=
         if (this.stream.peekChar(0) === _MUL && this.stream.peekChar(1) === _EQS) {
             this.stream.advance(2);
             return this.finishToken(offset, TokenType.SubstringOperator);
         }
         // Substring operator ^=
         if (this.stream.peekChar(0) === _HAT && this.stream.peekChar(1) === _EQS) {
             this.stream.advance(2);
             return this.finishToken(offset, TokenType.PrefixOperator);
         }
         // Substring operator $=
         if (this.stream.peekChar(0) === _DLR && this.stream.peekChar(1) === _EQS) {
             this.stream.advance(2);
             return this.finishToken(offset, TokenType.SuffixOperator);
         }
         // Delim
         this.stream.nextChar();
         return this.finishToken(offset, TokenType.Delim);
     };
     Scanner.prototype.trivia = function () {
         while (true) {
             var offset = this.stream.pos();
             if (this._whitespace()) {
                 if (!this.ignoreWhitespace) {
                     return this.finishToken(offset, TokenType.Whitespace);
                 }
             }
             else if (this.comment()) {
                 if (!this.ignoreComment) {
                     return this.finishToken(offset, TokenType.Comment);
                 }
             }
             else {
                 return null;
             }
         }
     };
     Scanner.prototype.comment = function () {
         if (this.stream.advanceIfChars([_FSL, _MUL])) {
             var success_1 = false, hot_1 = false;
             this.stream.advanceWhileChar(function (ch) {
                 if (hot_1 && ch === _FSL) {
                     success_1 = true;
                     return false;
                 }
                 hot_1 = ch === _MUL;
                 return true;
             });
             if (success_1) {
                 this.stream.advance(1);
             }
             return true;
         }
         return false;
     };
     Scanner.prototype._number = function () {
         var npeek = 0, ch;
         if (this.stream.peekChar() === _DOT) {
             npeek = 1;
         }
         ch = this.stream.peekChar(npeek);
         if (ch >= _0 && ch <= _9) {
             this.stream.advance(npeek + 1);
             this.stream.advanceWhileChar(function (ch) {
                 return ch >= _0 && ch <= _9 || npeek === 0 && ch === _DOT;
             });
             return true;
         }
         return false;
     };
     Scanner.prototype._newline = function (result) {
         var ch = this.stream.peekChar();
         switch (ch) {
             case _CAR:
             case _LFD:
             case _NWL:
                 this.stream.advance(1);
                 result.push(String.fromCharCode(ch));
                 if (ch === _CAR && this.stream.advanceIfChar(_NWL)) {
                     result.push('\n');
                 }
                 return true;
         }
         return false;
     };
     Scanner.prototype._escape = function (result, includeNewLines) {
         var ch = this.stream.peekChar();
         if (ch === _BSL) {
             this.stream.advance(1);
             ch = this.stream.peekChar();
             var hexNumCount = 0;
             while (hexNumCount < 6 && (ch >= _0 && ch <= _9 || ch >= _a && ch <= _f || ch >= _A && ch <= _F)) {
                 this.stream.advance(1);
                 ch = this.stream.peekChar();
                 hexNumCount++;
             }
             if (hexNumCount > 0) {
                 try {
                     var hexVal = parseInt(this.stream.substring(this.stream.pos() - hexNumCount), 16);
                     if (hexVal) {
                         result.push(String.fromCharCode(hexVal));
                     }
                 }
                 catch (e) {
                     // ignore
                 }
                 // optional whitespace or new line, not part of result text
                 if (ch === _WSP || ch === _TAB) {
                     this.stream.advance(1);
                 }
                 else {
                     this._newline([]);
                 }
                 return true;
             }
             if (ch !== _CAR && ch !== _LFD && ch !== _NWL) {
                 this.stream.advance(1);
                 result.push(String.fromCharCode(ch));
                 return true;
             }
             else if (includeNewLines) {
                 return this._newline(result);
             }
         }
         return false;
     };
     Scanner.prototype._stringChar = function (closeQuote, result) {
         // not closeQuote, not backslash, not newline
         var ch = this.stream.peekChar();
         if (ch !== 0 && ch !== closeQuote && ch !== _BSL && ch !== _CAR && ch !== _LFD && ch !== _NWL) {
             this.stream.advance(1);
             result.push(String.fromCharCode(ch));
             return true;
         }
         return false;
     };
     Scanner.prototype._string = function (result) {
         if (this.stream.peekChar() === _SQO || this.stream.peekChar() === _DQO) {
             var closeQuote = this.stream.nextChar();
             result.push(String.fromCharCode(closeQuote));
             while (this._stringChar(closeQuote, result) || this._escape(result, true)) {
                 // loop
             }
             if (this.stream.peekChar() === closeQuote) {
                 this.stream.nextChar();
                 result.push(String.fromCharCode(closeQuote));
                 return TokenType.String;
             }
             else {
                 return TokenType.BadString;
             }
         }
         return null;
     };
     Scanner.prototype._unquotedChar = function (result) {
         // not closeQuote, not backslash, not newline
         var ch = this.stream.peekChar();
         if (ch !== 0 && ch !== _BSL && ch !== _SQO && ch !== _DQO && ch !== _LPA && ch !== _RPA && ch !== _WSP && ch !== _TAB && ch !== _NWL && ch !== _LFD && ch !== _CAR) {
             this.stream.advance(1);
             result.push(String.fromCharCode(ch));
             return true;
         }
         return false;
     };
     Scanner.prototype._unquotedString = function (result) {
         var hasContent = false;
         while (this._unquotedChar(result) || this._escape(result)) {
             hasContent = true;
         }
         return hasContent;
     };
     Scanner.prototype._whitespace = function () {
         var n = this.stream.advanceWhileChar(function (ch) {
             return ch === _WSP || ch === _TAB || ch === _NWL || ch === _LFD || ch === _CAR;
         });
         return n > 0;
     };
     Scanner.prototype._name = function (result) {
         var matched = false;
         while (this._identChar(result) || this._escape(result)) {
             matched = true;
         }
         return matched;
     };
     Scanner.prototype.ident = function (result) {
         var pos = this.stream.pos();
         var hasMinus = this._minus(result);
         if (hasMinus && this._minus(result) /* -- */) {
             if (this._identFirstChar(result) || this._escape(result)) {
                 while (this._identChar(result) || this._escape(result)) {
                     // loop
                 }
                 return true;
             }
         }
         else if (this._identFirstChar(result) || this._escape(result)) {
             while (this._identChar(result) || this._escape(result)) {
                 // loop
             }
             return true;
         }
         this.stream.goBackTo(pos);
         return false;
     };
     Scanner.prototype._identFirstChar = function (result) {
         var ch = this.stream.peekChar();
         if (ch === _USC || // _
             ch >= _a && ch <= _z || // a-z
             ch >= _A && ch <= _Z || // A-Z
             ch >= 0x80 && ch <= 0xFFFF) { // nonascii
             this.stream.advance(1);
             result.push(String.fromCharCode(ch));
             return true;
         }
         return false;
     };
     Scanner.prototype._minus = function (result) {
         var ch = this.stream.peekChar();
         if (ch === _MIN) {
             this.stream.advance(1);
             result.push(String.fromCharCode(ch));
             return true;
         }
         return false;
     };
     Scanner.prototype._identChar = function (result) {
         var ch = this.stream.peekChar();
         if (ch === _USC || // _
             ch === _MIN || // -
             ch >= _a && ch <= _z || // a-z
             ch >= _A && ch <= _Z || // A-Z
             ch >= _0 && ch <= _9 || // 0/9
             ch >= 0x80 && ch <= 0xFFFF) { // nonascii
             this.stream.advance(1);
             result.push(String.fromCharCode(ch));
             return true;
         }
         return false;
     };
     return Scanner;
 }());
 export { Scanner };
	/*---------------------------------------------------------------------------------------------
	* Copyright (c) Microsoft Corporation. All rights reserved.
	* Licensed under the MIT License. See License.txt in the project root for license information.
	--------------------------------------------------------------------------------------------/
	'use strict';
	export var TokenType;
	(function (TokenType) {
	TokenType[TokenType["Ident"] = 0] = "Ident";
	TokenType[TokenType["AtKeyword"] = 1] = "AtKeyword";
	TokenType[TokenType["String"] = 2] = "String";
	TokenType[TokenType["BadString"] = 3] = "BadString";
	TokenType[TokenType["UnquotedString"] = 4] = "UnquotedString";
	TokenType[TokenType["Hash"] = 5] = "Hash";
	TokenType[TokenType["Num"] = 6] = "Num";
	TokenType[TokenType["Percentage"] = 7] = "Percentage";
	TokenType[TokenType["Dimension"] = 8] = "Dimension";
	TokenType[TokenType["UnicodeRange"] = 9] = "UnicodeRange";
	TokenType[TokenType["CDO"] = 10] = "CDO";
	TokenType[TokenType["CDC"] = 11] = "CDC";
	TokenType[TokenType["Colon"] = 12] = "Colon";
	TokenType[TokenType["SemiColon"] = 13] = "SemiColon";
	TokenType[TokenType["CurlyL"] = 14] = "CurlyL";
	TokenType[TokenType["CurlyR"] = 15] = "CurlyR";
	TokenType[TokenType["ParenthesisL"] = 16] = "ParenthesisL";
	TokenType[TokenType["ParenthesisR"] = 17] = "ParenthesisR";
	TokenType[TokenType["BracketL"] = 18] = "BracketL";
	TokenType[TokenType["BracketR"] = 19] = "BracketR";
	TokenType[TokenType["Whitespace"] = 20] = "Whitespace";
	TokenType[TokenType["Includes"] = 21] = "Includes";
	TokenType[TokenType["Dashmatch"] = 22] = "Dashmatch";
	TokenType[TokenType["SubstringOperator"] = 23] = "SubstringOperator";
	TokenType[TokenType["PrefixOperator"] = 24] = "PrefixOperator";
	TokenType[TokenType["SuffixOperator"] = 25] = "SuffixOperator";
	TokenType[TokenType["Delim"] = 26] = "Delim";
	TokenType[TokenType["EMS"] = 27] = "EMS";
	TokenType[TokenType["EXS"] = 28] = "EXS";
	TokenType[TokenType["Length"] = 29] = "Length";
	TokenType[TokenType["Angle"] = 30] = "Angle";
	TokenType[TokenType["Time"] = 31] = "Time";
	TokenType[TokenType["Freq"] = 32] = "Freq";
	TokenType[TokenType["Exclamation"] = 33] = "Exclamation";
	TokenType[TokenType["Resolution"] = 34] = "Resolution";
	TokenType[TokenType["Comma"] = 35] = "Comma";
	TokenType[TokenType["Charset"] = 36] = "Charset";
	TokenType[TokenType["EscapedJavaScript"] = 37] = "EscapedJavaScript";
	TokenType[TokenType["BadEscapedJavaScript"] = 38] = "BadEscapedJavaScript";
	TokenType[TokenType["Comment"] = 39] = "Comment";
	TokenType[TokenType["SingleLineComment"] = 40] = "SingleLineComment";
	TokenType[TokenType["EOF"] = 41] = "EOF";
	TokenType[TokenType["CustomToken"] = 42] = "CustomToken";
	})(TokenType \|\| (TokenType = {}));
	var MultiLineStream = /** @class */ (function () {
	function MultiLineStream(source) {
	this.source = source;
	this.len = source.length;
	this.position = 0;
	}
	MultiLineStream.prototype.substring = function (from, to) {
	if (to === void 0) { to = this.position; }
	return this.source.substring(from, to);
	};
	MultiLineStream.prototype.eos = function () {
	return this.len <= this.position;
	};
	MultiLineStream.prototype.pos = function () {
	return this.position;
	};
	MultiLineStream.prototype.goBackTo = function (pos) {
	this.position = pos;
	};
	MultiLineStream.prototype.goBack = function (n) {
	this.position -= n;
	};
	MultiLineStream.prototype.advance = function (n) {
	this.position += n;
	};
	MultiLineStream.prototype.nextChar = function () {
	return this.source.charCodeAt(this.position++) \|\| 0;
	};
	MultiLineStream.prototype.peekChar = function (n) {
	if (n === void 0) { n = 0; }
	return this.source.charCodeAt(this.position + n) \|\| 0;
	};
	MultiLineStream.prototype.lookbackChar = function (n) {
	if (n === void 0) { n = 0; }
	return this.source.charCodeAt(this.position - n) \|\| 0;
	};
	MultiLineStream.prototype.advanceIfChar = function (ch) {
	if (ch === this.source.charCodeAt(this.position)) {
	this.position++;
	return true;
	}
	return false;
	};
	MultiLineStream.prototype.advanceIfChars = function (ch) {
	if (this.position + ch.length > this.source.length) {
	return false;
	}
	var i = 0;
	for (; i < ch.length; i++) {
	if (this.source.charCodeAt(this.position + i) !== ch[i]) {
	return false;
	}
	}
	this.advance(i);
	return true;
	};
	MultiLineStream.prototype.advanceWhileChar = function (condition) {
	var posNow = this.position;
	while (this.position < this.len && condition(this.source.charCodeAt(this.position))) {
	this.position++;
	}
	return this.position - posNow;
	};
	return MultiLineStream;
	}());
	export { MultiLineStream };
	var _a = 'a'.charCodeAt(0);
	var _f = 'f'.charCodeAt(0);
	var _z = 'z'.charCodeAt(0);
	var _A = 'A'.charCodeAt(0);
	var _F = 'F'.charCodeAt(0);
	var _Z = 'Z'.charCodeAt(0);
	var _0 = '0'.charCodeAt(0);
	var _9 = '9'.charCodeAt(0);
	var _TLD = '~'.charCodeAt(0);
	var _HAT = '^'.charCodeAt(0);
	var _EQS = '='.charCodeAt(0);
	var _PIP = '\|'.charCodeAt(0);
	var _MIN = '-'.charCodeAt(0);
	var _USC = '_'.charCodeAt(0);
	var _PRC = '%'.charCodeAt(0);
	var _MUL = '*'.charCodeAt(0);
	var _LPA = '('.charCodeAt(0);
	var _RPA = ')'.charCodeAt(0);
	var _LAN = '<'.charCodeAt(0);
	var _RAN = '>'.charCodeAt(0);
	var _ATS = '@'.charCodeAt(0);
	var _HSH = '#'.charCodeAt(0);
	var _DLR = '$'.charCodeAt(0);
	var _BSL = '\\'.charCodeAt(0);
	var _FSL = '/'.charCodeAt(0);
	var _NWL = '\n'.charCodeAt(0);
	var _CAR = '\r'.charCodeAt(0);
	var _LFD = '\f'.charCodeAt(0);
	var _DQO = '"'.charCodeAt(0);
	var _SQO = '\''.charCodeAt(0);
	var _WSP = ' '.charCodeAt(0);
	var _TAB = '\t'.charCodeAt(0);
	var _SEM = ';'.charCodeAt(0);
	var _COL = ':'.charCodeAt(0);
	var _CUL = '{'.charCodeAt(0);
	var _CUR = '}'.charCodeAt(0);
	var _BRL = '['.charCodeAt(0);
	var _BRR = ']'.charCodeAt(0);
	var _CMA = ','.charCodeAt(0);
	var _DOT = '.'.charCodeAt(0);
	var _BNG = '!'.charCodeAt(0);
	var staticTokenTable = {};
	staticTokenTable[_SEM] = TokenType.SemiColon;
	staticTokenTable[_COL] = TokenType.Colon;
	staticTokenTable[_CUL] = TokenType.CurlyL;
	staticTokenTable[_CUR] = TokenType.CurlyR;
	staticTokenTable[_BRR] = TokenType.BracketR;
	staticTokenTable[_BRL] = TokenType.BracketL;
	staticTokenTable[_LPA] = TokenType.ParenthesisL;
	staticTokenTable[_RPA] = TokenType.ParenthesisR;
	staticTokenTable[_CMA] = TokenType.Comma;
	var staticUnitTable = {};
	staticUnitTable['em'] = TokenType.EMS;
	staticUnitTable['ex'] = TokenType.EXS;
	staticUnitTable['px'] = TokenType.Length;
	staticUnitTable['cm'] = TokenType.Length;
	staticUnitTable['mm'] = TokenType.Length;
	staticUnitTable['in'] = TokenType.Length;
	staticUnitTable['pt'] = TokenType.Length;
	staticUnitTable['pc'] = TokenType.Length;
	staticUnitTable['deg'] = TokenType.Angle;
	staticUnitTable['rad'] = TokenType.Angle;
	staticUnitTable['grad'] = TokenType.Angle;
	staticUnitTable['ms'] = TokenType.Time;
	staticUnitTable['s'] = TokenType.Time;
	staticUnitTable['hz'] = TokenType.Freq;
	staticUnitTable['khz'] = TokenType.Freq;
	staticUnitTable['%'] = TokenType.Percentage;
	staticUnitTable['fr'] = TokenType.Percentage;
	staticUnitTable['dpi'] = TokenType.Resolution;
	staticUnitTable['dpcm'] = TokenType.Resolution;
	var Scanner = /** @class */ (function () {
	function Scanner() {
	this.stream = new MultiLineStream('');
	this.ignoreComment = true;
	this.ignoreWhitespace = true;
	this.inURL = false;
	}
	Scanner.prototype.setSource = function (input) {
	this.stream = new MultiLineStream(input);
	};
	Scanner.prototype.finishToken = function (offset, type, text) {
	return {
	offset: offset,
	len: this.stream.pos() - offset,
	type: type,
	text: text \|\| this.stream.substring(offset)
	};
	};
	Scanner.prototype.substring = function (offset, len) {
	return this.stream.substring(offset, offset + len);
	};
	Scanner.prototype.pos = function () {
	return this.stream.pos();
	};
	Scanner.prototype.goBackTo = function (pos) {
	this.stream.goBackTo(pos);
	};
	Scanner.prototype.scanUnquotedString = function () {
	var offset = this.stream.pos();
	var content = [];
	if (this._unquotedString(content)) {
	return this.finishToken(offset, TokenType.UnquotedString, content.join(''));
	}
	return null;
	};
	Scanner.prototype.scan = function () {
	// processes all whitespaces and comments
	var triviaToken = this.trivia();
	if (triviaToken !== null) {
	return triviaToken;
	}
	var offset = this.stream.pos();
	// End of file/input
	if (this.stream.eos()) {
	return this.finishToken(offset, TokenType.EOF);
	}
	return this.scanNext(offset);
	};
	Scanner.prototype.scanNext = function (offset) {
	// CDO <!--
	if (this.stream.advanceIfChars([_LAN, _BNG, _MIN, _MIN])) {
	return this.finishToken(offset, TokenType.CDO);
	}
	// CDC -->
	if (this.stream.advanceIfChars([_MIN, _MIN, _RAN])) {
	return this.finishToken(offset, TokenType.CDC);
	}
	var content = [];
	if (this.ident(content)) {
	return this.finishToken(offset, TokenType.Ident, content.join(''));
	}
	// at-keyword
	if (this.stream.advanceIfChar(_ATS)) {
	content = ['@'];
	if (this._name(content)) {
	var keywordText = content.join('');
	if (keywordText === '@charset') {
	return this.finishToken(offset, TokenType.Charset, keywordText);
	}
	return this.finishToken(offset, TokenType.AtKeyword, keywordText);
	}
	else {
	return this.finishToken(offset, TokenType.Delim);
	}
	}
	// hash
	if (this.stream.advanceIfChar(_HSH)) {
	content = ['#'];
	if (this._name(content)) {
	return this.finishToken(offset, TokenType.Hash, content.join(''));
	}
	else {
	return this.finishToken(offset, TokenType.Delim);
	}
	}
	// Important
	if (this.stream.advanceIfChar(_BNG)) {
	return this.finishToken(offset, TokenType.Exclamation);
	}
	// Numbers
	if (this._number()) {
	var pos = this.stream.pos();
	content = [this.stream.substring(offset, pos)];
	if (this.stream.advanceIfChar(_PRC)) {
	// Percentage 43%
	return this.finishToken(offset, TokenType.Percentage);
	}
	else if (this.ident(content)) {
	var dim = this.stream.substring(pos).toLowerCase();
	var tokenType_1 = staticUnitTable[dim];
	if (typeof tokenType_1 !== 'undefined') {
	// Known dimension 43px
	return this.finishToken(offset, tokenType_1, content.join(''));
	}
	else {
	// Unknown dimension 43ft
	return this.finishToken(offset, TokenType.Dimension, content.join(''));
	}
	}
	return this.finishToken(offset, TokenType.Num);
	}
	// String, BadString
	content = [];
	var tokenType = this._string(content);
	if (tokenType !== null) {
	return this.finishToken(offset, tokenType, content.join(''));
	}
	// single character tokens
	tokenType = staticTokenTable[this.stream.peekChar()];
	if (typeof tokenType !== 'undefined') {
	this.stream.advance(1);
	return this.finishToken(offset, tokenType);
	}
	// includes ~=
	if (this.stream.peekChar(0) === _TLD && this.stream.peekChar(1) === _EQS) {
	this.stream.advance(2);
	return this.finishToken(offset, TokenType.Includes);
	}
	// DashMatch \|=
	if (this.stream.peekChar(0) === _PIP && this.stream.peekChar(1) === _EQS) {
	this.stream.advance(2);
	return this.finishToken(offset, TokenType.Dashmatch);
	}
	// Substring operator *=
	if (this.stream.peekChar(0) === _MUL && this.stream.peekChar(1) === _EQS) {
	this.stream.advance(2);
	return this.finishToken(offset, TokenType.SubstringOperator);
	}
	// Substring operator ^=
	if (this.stream.peekChar(0) === _HAT && this.stream.peekChar(1) === _EQS) {
	this.stream.advance(2);
	return this.finishToken(offset, TokenType.PrefixOperator);
	}
	// Substring operator $=
	if (this.stream.peekChar(0) === _DLR && this.stream.peekChar(1) === _EQS) {
	this.stream.advance(2);
	return this.finishToken(offset, TokenType.SuffixOperator);
	}
	// Delim
	this.stream.nextChar();
	return this.finishToken(offset, TokenType.Delim);
	};
	Scanner.prototype.trivia = function () {
	while (true) {
	var offset = this.stream.pos();
	if (this._whitespace()) {
	if (!this.ignoreWhitespace) {
	return this.finishToken(offset, TokenType.Whitespace);
	}
	}
	else if (this.comment()) {
	if (!this.ignoreComment) {
	return this.finishToken(offset, TokenType.Comment);
	}
	}
	else {
	return null;
	}
	}
	};
	Scanner.prototype.comment = function () {
	if (this.stream.advanceIfChars([_FSL, _MUL])) {
	var success_1 = false, hot_1 = false;
	this.stream.advanceWhileChar(function (ch) {
	if (hot_1 && ch === _FSL) {
	success_1 = true;
	return false;
	}
	hot_1 = ch === _MUL;
	return true;
	});
	if (success_1) {
	this.stream.advance(1);
	}
	return true;
	}
	return false;
	};
	Scanner.prototype._number = function () {
	var npeek = 0, ch;
	if (this.stream.peekChar() === _DOT) {
	npeek = 1;
	}
	ch = this.stream.peekChar(npeek);
	if (ch >= _0 && ch <= _9) {
	this.stream.advance(npeek + 1);
	this.stream.advanceWhileChar(function (ch) {
	return ch >= _0 && ch <= _9 \|\| npeek === 0 && ch === _DOT;
	});
	return true;
	}
	return false;
	};
	Scanner.prototype._newline = function (result) {
	var ch = this.stream.peekChar();
	switch (ch) {
	case _CAR:
	case _LFD:
	case _NWL:
	this.stream.advance(1);
	result.push(String.fromCharCode(ch));
	if (ch === _CAR && this.stream.advanceIfChar(_NWL)) {
	result.push('\n');
	}
	return true;
	}
	return false;
	};
	Scanner.prototype._escape = function (result, includeNewLines) {
	var ch = this.stream.peekChar();
	if (ch === _BSL) {
	this.stream.advance(1);
	ch = this.stream.peekChar();
	var hexNumCount = 0;
	while (hexNumCount < 6 && (ch >= _0 && ch <= _9 \|\| ch >= _a && ch <= _f \|\| ch >= _A && ch <= _F)) {
	this.stream.advance(1);
	ch = this.stream.peekChar();
	hexNumCount++;
	}
	if (hexNumCount > 0) {
	try {
	var hexVal = parseInt(this.stream.substring(this.stream.pos() - hexNumCount), 16);
	if (hexVal) {
	result.push(String.fromCharCode(hexVal));
	}
	}
	catch (e) {
	// ignore
	}
	// optional whitespace or new line, not part of result text
	if (ch === _WSP \|\| ch === _TAB) {
	this.stream.advance(1);
	}
	else {
	this._newline([]);
	}
	return true;
	}
	if (ch !== _CAR && ch !== _LFD && ch !== _NWL) {
	this.stream.advance(1);
	result.push(String.fromCharCode(ch));
	return true;
	}
	else if (includeNewLines) {
	return this._newline(result);
	}
	}
	return false;
	};
	Scanner.prototype._stringChar = function (closeQuote, result) {
	// not closeQuote, not backslash, not newline
	var ch = this.stream.peekChar();
	if (ch !== 0 && ch !== closeQuote && ch !== _BSL && ch !== _CAR && ch !== _LFD && ch !== _NWL) {
	this.stream.advance(1);
	result.push(String.fromCharCode(ch));
	return true;
	}
	return false;
	};
	Scanner.prototype._string = function (result) {
	if (this.stream.peekChar() === _SQO \|\| this.stream.peekChar() === _DQO) {
	var closeQuote = this.stream.nextChar();
	result.push(String.fromCharCode(closeQuote));
	while (this._stringChar(closeQuote, result) \|\| this._escape(result, true)) {
	// loop
	}
	if (this.stream.peekChar() === closeQuote) {
	this.stream.nextChar();
	result.push(String.fromCharCode(closeQuote));
	return TokenType.String;
	}
	else {
	return TokenType.BadString;
	}
	}
	return null;
	};
	Scanner.prototype._unquotedChar = function (result) {
	// not closeQuote, not backslash, not newline
	var ch = this.stream.peekChar();
	if (ch !== 0 && ch !== _BSL && ch !== _SQO && ch !== _DQO && ch !== _LPA && ch !== _RPA && ch !== _WSP && ch !== _TAB && ch !== _NWL && ch !== _LFD && ch !== _CAR) {
	this.stream.advance(1);
	result.push(String.fromCharCode(ch));
	return true;
	}
	return false;
	};
	Scanner.prototype._unquotedString = function (result) {
	var hasContent = false;
	while (this._unquotedChar(result) \|\| this._escape(result)) {
	hasContent = true;
	}
	return hasContent;
	};
	Scanner.prototype._whitespace = function () {
	var n = this.stream.advanceWhileChar(function (ch) {
	return ch === _WSP \|\| ch === _TAB \|\| ch === _NWL \|\| ch === _LFD \|\| ch === _CAR;
	});
	return n > 0;
	};
	Scanner.prototype._name = function (result) {
	var matched = false;
	while (this._identChar(result) \|\| this._escape(result)) {
	matched = true;
	}
	return matched;
	};
	Scanner.prototype.ident = function (result) {
	var pos = this.stream.pos();
	var hasMinus = this._minus(result);
	if (hasMinus && this._minus(result) /* -- */) {
	if (this._identFirstChar(result) \|\| this._escape(result)) {
	while (this._identChar(result) \|\| this._escape(result)) {
	// loop
	}
	return true;
	}
	}
	else if (this._identFirstChar(result) \|\| this._escape(result)) {
	while (this._identChar(result) \|\| this._escape(result)) {
	// loop
	}
	return true;
	}
	this.stream.goBackTo(pos);
	return false;
	};
	Scanner.prototype._identFirstChar = function (result) {
	var ch = this.stream.peekChar();
	if (ch === _USC \|\| // _
	ch >= _a && ch <= _z \|\| // a-z
	ch >= _A && ch <= _Z \|\| // A-Z
	ch >= 0x80 && ch <= 0xFFFF) { // nonascii
	this.stream.advance(1);
	result.push(String.fromCharCode(ch));
	return true;
	}
	return false;
	};
	Scanner.prototype._minus = function (result) {
	var ch = this.stream.peekChar();
	if (ch === _MIN) {
	this.stream.advance(1);
	result.push(String.fromCharCode(ch));
	return true;
	}
	return false;
	};
	Scanner.prototype._identChar = function (result) {
	var ch = this.stream.peekChar();
	if (ch === _USC \|\| // _
	ch === _MIN \|\| // -
	ch >= _a && ch <= _z \|\| // a-z
	ch >= _A && ch <= _Z \|\| // A-Z
	ch >= _0 && ch <= _9 \|\| // 0/9
	ch >= 0x80 && ch <= 0xFFFF) { // nonascii
	this.stream.advance(1);
	result.push(String.fromCharCode(ch));
	return true;
	}
	return false;
	};
	return Scanner;
	}());
	export { Scanner };