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- 'use strict';
- exports.__esModule = true;
- var _declaration = require('./declaration');
- var _declaration2 = _interopRequireDefault(_declaration);
- var _tokenize = require('./tokenize');
- var _tokenize2 = _interopRequireDefault(_tokenize);
- var _comment = require('./comment');
- var _comment2 = _interopRequireDefault(_comment);
- var _atRule = require('./at-rule');
- var _atRule2 = _interopRequireDefault(_atRule);
- var _root = require('./root');
- var _root2 = _interopRequireDefault(_root);
- var _rule = require('./rule');
- var _rule2 = _interopRequireDefault(_rule);
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
- var Parser = function () {
- function Parser(input) {
- _classCallCheck(this, Parser);
- this.input = input;
- this.root = new _root2.default();
- this.current = this.root;
- this.spaces = '';
- this.semicolon = false;
- this.createTokenizer();
- this.root.source = { input: input, start: { line: 1, column: 1 } };
- }
- Parser.prototype.createTokenizer = function createTokenizer() {
- this.tokenizer = (0, _tokenize2.default)(this.input);
- };
- Parser.prototype.parse = function parse() {
- var token = void 0;
- while (!this.tokenizer.endOfFile()) {
- token = this.tokenizer.nextToken();
- switch (token[0]) {
- case 'space':
- this.spaces += token[1];
- break;
- case ';':
- this.freeSemicolon(token);
- break;
- case '}':
- this.end(token);
- break;
- case 'comment':
- this.comment(token);
- break;
- case 'at-word':
- this.atrule(token);
- break;
- case '{':
- this.emptyRule(token);
- break;
- default:
- this.other(token);
- break;
- }
- }
- this.endFile();
- };
- Parser.prototype.comment = function comment(token) {
- var node = new _comment2.default();
- this.init(node, token[2], token[3]);
- node.source.end = { line: token[4], column: token[5] };
- var text = token[1].slice(2, -2);
- if (/^\s*$/.test(text)) {
- node.text = '';
- node.raws.left = text;
- node.raws.right = '';
- } else {
- var match = text.match(/^(\s*)([^]*[^\s])(\s*)$/);
- node.text = match[2];
- node.raws.left = match[1];
- node.raws.right = match[3];
- }
- };
- Parser.prototype.emptyRule = function emptyRule(token) {
- var node = new _rule2.default();
- this.init(node, token[2], token[3]);
- node.selector = '';
- node.raws.between = '';
- this.current = node;
- };
- Parser.prototype.other = function other(start) {
- var end = false;
- var type = null;
- var colon = false;
- var bracket = null;
- var brackets = [];
- var tokens = [];
- var token = start;
- while (token) {
- type = token[0];
- tokens.push(token);
- if (type === '(' || type === '[') {
- if (!bracket) bracket = token;
- brackets.push(type === '(' ? ')' : ']');
- } else if (brackets.length === 0) {
- if (type === ';') {
- if (colon) {
- this.decl(tokens);
- return;
- } else {
- break;
- }
- } else if (type === '{') {
- this.rule(tokens);
- return;
- } else if (type === '}') {
- this.tokenizer.back(tokens.pop());
- end = true;
- break;
- } else if (type === ':') {
- colon = true;
- }
- } else if (type === brackets[brackets.length - 1]) {
- brackets.pop();
- if (brackets.length === 0) bracket = null;
- }
- token = this.tokenizer.nextToken();
- }
- if (this.tokenizer.endOfFile()) end = true;
- if (brackets.length > 0) this.unclosedBracket(bracket);
- if (end && colon) {
- while (tokens.length) {
- token = tokens[tokens.length - 1][0];
- if (token !== 'space' && token !== 'comment') break;
- this.tokenizer.back(tokens.pop());
- }
- this.decl(tokens);
- return;
- } else {
- this.unknownWord(tokens);
- }
- };
- Parser.prototype.rule = function rule(tokens) {
- tokens.pop();
- var node = new _rule2.default();
- this.init(node, tokens[0][2], tokens[0][3]);
- node.raws.between = this.spacesAndCommentsFromEnd(tokens);
- this.raw(node, 'selector', tokens);
- this.current = node;
- };
- Parser.prototype.decl = function decl(tokens) {
- var node = new _declaration2.default();
- this.init(node);
- var last = tokens[tokens.length - 1];
- if (last[0] === ';') {
- this.semicolon = true;
- tokens.pop();
- }
- if (last[4]) {
- node.source.end = { line: last[4], column: last[5] };
- } else {
- node.source.end = { line: last[2], column: last[3] };
- }
- while (tokens[0][0] !== 'word') {
- if (tokens.length === 1) this.unknownWord(tokens);
- node.raws.before += tokens.shift()[1];
- }
- node.source.start = { line: tokens[0][2], column: tokens[0][3] };
- node.prop = '';
- while (tokens.length) {
- var type = tokens[0][0];
- if (type === ':' || type === 'space' || type === 'comment') {
- break;
- }
- node.prop += tokens.shift()[1];
- }
- node.raws.between = '';
- var token = void 0;
- while (tokens.length) {
- token = tokens.shift();
- if (token[0] === ':') {
- node.raws.between += token[1];
- break;
- } else {
- node.raws.between += token[1];
- }
- }
- if (node.prop[0] === '_' || node.prop[0] === '*') {
- node.raws.before += node.prop[0];
- node.prop = node.prop.slice(1);
- }
- node.raws.between += this.spacesAndCommentsFromStart(tokens);
- this.precheckMissedSemicolon(tokens);
- for (var i = tokens.length - 1; i > 0; i--) {
- token = tokens[i];
- if (token[1].toLowerCase() === '!important') {
- node.important = true;
- var string = this.stringFrom(tokens, i);
- string = this.spacesFromEnd(tokens) + string;
- if (string !== ' !important') node.raws.important = string;
- break;
- } else if (token[1].toLowerCase() === 'important') {
- var cache = tokens.slice(0);
- var str = '';
- for (var j = i; j > 0; j--) {
- var _type = cache[j][0];
- if (str.trim().indexOf('!') === 0 && _type !== 'space') {
- break;
- }
- str = cache.pop()[1] + str;
- }
- if (str.trim().indexOf('!') === 0) {
- node.important = true;
- node.raws.important = str;
- tokens = cache;
- }
- }
- if (token[0] !== 'space' && token[0] !== 'comment') {
- break;
- }
- }
- this.raw(node, 'value', tokens);
- if (node.value.indexOf(':') !== -1) this.checkMissedSemicolon(tokens);
- };
- Parser.prototype.atrule = function atrule(token) {
- var node = new _atRule2.default();
- node.name = token[1].slice(1);
- if (node.name === '') {
- this.unnamedAtrule(node, token);
- }
- this.init(node, token[2], token[3]);
- var prev = void 0;
- var shift = void 0;
- var last = false;
- var open = false;
- var params = [];
- while (!this.tokenizer.endOfFile()) {
- token = this.tokenizer.nextToken();
- if (token[0] === ';') {
- node.source.end = { line: token[2], column: token[3] };
- this.semicolon = true;
- break;
- } else if (token[0] === '{') {
- open = true;
- break;
- } else if (token[0] === '}') {
- if (params.length > 0) {
- shift = params.length - 1;
- prev = params[shift];
- while (prev && prev[0] === 'space') {
- prev = params[--shift];
- }
- if (prev) {
- node.source.end = { line: prev[4], column: prev[5] };
- }
- }
- this.end(token);
- break;
- } else {
- params.push(token);
- }
- if (this.tokenizer.endOfFile()) {
- last = true;
- break;
- }
- }
- node.raws.between = this.spacesAndCommentsFromEnd(params);
- if (params.length) {
- node.raws.afterName = this.spacesAndCommentsFromStart(params);
- this.raw(node, 'params', params);
- if (last) {
- token = params[params.length - 1];
- node.source.end = { line: token[4], column: token[5] };
- this.spaces = node.raws.between;
- node.raws.between = '';
- }
- } else {
- node.raws.afterName = '';
- node.params = '';
- }
- if (open) {
- node.nodes = [];
- this.current = node;
- }
- };
- Parser.prototype.end = function end(token) {
- if (this.current.nodes && this.current.nodes.length) {
- this.current.raws.semicolon = this.semicolon;
- }
- this.semicolon = false;
- this.current.raws.after = (this.current.raws.after || '') + this.spaces;
- this.spaces = '';
- if (this.current.parent) {
- this.current.source.end = { line: token[2], column: token[3] };
- this.current = this.current.parent;
- } else {
- this.unexpectedClose(token);
- }
- };
- Parser.prototype.endFile = function endFile() {
- if (this.current.parent) this.unclosedBlock();
- if (this.current.nodes && this.current.nodes.length) {
- this.current.raws.semicolon = this.semicolon;
- }
- this.current.raws.after = (this.current.raws.after || '') + this.spaces;
- };
- Parser.prototype.freeSemicolon = function freeSemicolon(token) {
- this.spaces += token[1];
- if (this.current.nodes) {
- var prev = this.current.nodes[this.current.nodes.length - 1];
- if (prev && prev.type === 'rule' && !prev.raws.ownSemicolon) {
- prev.raws.ownSemicolon = this.spaces;
- this.spaces = '';
- }
- }
- };
- // Helpers
- Parser.prototype.init = function init(node, line, column) {
- this.current.push(node);
- node.source = { start: { line: line, column: column }, input: this.input };
- node.raws.before = this.spaces;
- this.spaces = '';
- if (node.type !== 'comment') this.semicolon = false;
- };
- Parser.prototype.raw = function raw(node, prop, tokens) {
- var token = void 0,
- type = void 0;
- var length = tokens.length;
- var value = '';
- var clean = true;
- for (var i = 0; i < length; i += 1) {
- token = tokens[i];
- type = token[0];
- if (type === 'comment' || type === 'space' && i === length - 1) {
- clean = false;
- } else {
- value += token[1];
- }
- }
- if (!clean) {
- var raw = tokens.reduce(function (all, i) {
- return all + i[1];
- }, '');
- node.raws[prop] = { value: value, raw: raw };
- }
- node[prop] = value;
- };
- Parser.prototype.spacesAndCommentsFromEnd = function spacesAndCommentsFromEnd(tokens) {
- var lastTokenType = void 0;
- var spaces = '';
- while (tokens.length) {
- lastTokenType = tokens[tokens.length - 1][0];
- if (lastTokenType !== 'space' && lastTokenType !== 'comment') break;
- spaces = tokens.pop()[1] + spaces;
- }
- return spaces;
- };
- Parser.prototype.spacesAndCommentsFromStart = function spacesAndCommentsFromStart(tokens) {
- var next = void 0;
- var spaces = '';
- while (tokens.length) {
- next = tokens[0][0];
- if (next !== 'space' && next !== 'comment') break;
- spaces += tokens.shift()[1];
- }
- return spaces;
- };
- Parser.prototype.spacesFromEnd = function spacesFromEnd(tokens) {
- var lastTokenType = void 0;
- var spaces = '';
- while (tokens.length) {
- lastTokenType = tokens[tokens.length - 1][0];
- if (lastTokenType !== 'space') break;
- spaces = tokens.pop()[1] + spaces;
- }
- return spaces;
- };
- Parser.prototype.stringFrom = function stringFrom(tokens, from) {
- var result = '';
- for (var i = from; i < tokens.length; i++) {
- result += tokens[i][1];
- }
- tokens.splice(from, tokens.length - from);
- return result;
- };
- Parser.prototype.colon = function colon(tokens) {
- var brackets = 0;
- var token = void 0,
- type = void 0,
- prev = void 0;
- for (var i = 0; i < tokens.length; i++) {
- token = tokens[i];
- type = token[0];
- if (type === '(') {
- brackets += 1;
- } else if (type === ')') {
- brackets -= 1;
- } else if (brackets === 0 && type === ':') {
- if (!prev) {
- this.doubleColon(token);
- } else if (prev[0] === 'word' && prev[1] === 'progid') {
- continue;
- } else {
- return i;
- }
- }
- prev = token;
- }
- return false;
- };
- // Errors
- Parser.prototype.unclosedBracket = function unclosedBracket(bracket) {
- throw this.input.error('Unclosed bracket', bracket[2], bracket[3]);
- };
- Parser.prototype.unknownWord = function unknownWord(tokens) {
- throw this.input.error('Unknown word', tokens[0][2], tokens[0][3]);
- };
- Parser.prototype.unexpectedClose = function unexpectedClose(token) {
- throw this.input.error('Unexpected }', token[2], token[3]);
- };
- Parser.prototype.unclosedBlock = function unclosedBlock() {
- var pos = this.current.source.start;
- throw this.input.error('Unclosed block', pos.line, pos.column);
- };
- Parser.prototype.doubleColon = function doubleColon(token) {
- throw this.input.error('Double colon', token[2], token[3]);
- };
- Parser.prototype.unnamedAtrule = function unnamedAtrule(node, token) {
- throw this.input.error('At-rule without name', token[2], token[3]);
- };
- Parser.prototype.precheckMissedSemicolon = function precheckMissedSemicolon(tokens) {
- // Hook for Safe Parser
- tokens;
- };
- Parser.prototype.checkMissedSemicolon = function checkMissedSemicolon(tokens) {
- var colon = this.colon(tokens);
- if (colon === false) return;
- var founded = 0;
- var token = void 0;
- for (var j = colon - 1; j >= 0; j--) {
- token = tokens[j];
- if (token[0] !== 'space') {
- founded += 1;
- if (founded === 2) break;
- }
- }
- throw this.input.error('Missed semicolon', token[2], token[3]);
- };
- return Parser;
- }();
- exports.default = Parser;
- module.exports = exports['default'];
- //# 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Declaration from './declaration';\nimport tokenizer   from './tokenize';\nimport Comment     from './comment';\nimport AtRule      from './at-rule';\nimport Root        from './root';\nimport Rule        from './rule';\n\nexport default class Parser {\n\n    constructor(input) {\n        this.input = input;\n\n        this.root      = new Root();\n        this.current   = this.root;\n        this.spaces    = '';\n        this.semicolon = false;\n\n        this.createTokenizer();\n        this.root.source = { input, start: { line: 1, column: 1 } };\n    }\n\n    createTokenizer() {\n        this.tokenizer = tokenizer(this.input);\n    }\n\n    parse() {\n        let token;\n        while ( !this.tokenizer.endOfFile() ) {\n            token = this.tokenizer.nextToken();\n\n            switch ( token[0] ) {\n\n            case 'space':\n                this.spaces += token[1];\n                break;\n\n            case ';':\n                this.freeSemicolon(token);\n                break;\n\n            case '}':\n                this.end(token);\n                break;\n\n            case 'comment':\n                this.comment(token);\n                break;\n\n            case 'at-word':\n                this.atrule(token);\n                break;\n\n            case '{':\n                this.emptyRule(token);\n                break;\n\n            default:\n                this.other(token);\n                break;\n            }\n        }\n        this.endFile();\n    }\n\n    comment(token) {\n        let node = new Comment();\n        this.init(node, token[2], token[3]);\n        node.source.end = { line: token[4], column: token[5] };\n\n        let text = token[1].slice(2, -2);\n        if ( /^\\s*$/.test(text) ) {\n            node.text       = '';\n            node.raws.left  = text;\n            node.raws.right = '';\n        } else {\n            let match = text.match(/^(\\s*)([^]*[^\\s])(\\s*)$/);\n            node.text       = match[2];\n            node.raws.left  = match[1];\n            node.raws.right = match[3];\n        }\n    }\n\n    emptyRule(token) {\n        let node = new Rule();\n        this.init(node, token[2], token[3]);\n        node.selector = '';\n        node.raws.between = '';\n        this.current = node;\n    }\n\n    other(start) {\n        let end      = false;\n        let type     = null;\n        let colon    = false;\n        let bracket  = null;\n        let brackets = [];\n\n        let tokens = [];\n        let token = start;\n        while ( token ) {\n            type = token[0];\n            tokens.push(token);\n\n            if ( type === '(' || type === '[' ) {\n                if ( !bracket ) bracket = token;\n                brackets.push(type === '(' ? ')' : ']');\n\n            } else if ( brackets.length === 0 ) {\n                if ( type === ';' ) {\n                    if ( colon ) {\n                        this.decl(tokens);\n                        return;\n                    } else {\n                        break;\n                    }\n\n                } else if ( type === '{' ) {\n                    this.rule(tokens);\n                    return;\n\n                } else if ( type === '}' ) {\n                    this.tokenizer.back(tokens.pop());\n                    end = true;\n                    break;\n\n                } else if ( type === ':' ) {\n                    colon = true;\n                }\n\n            } else if ( type === brackets[brackets.length - 1] ) {\n                brackets.pop();\n                if ( brackets.length === 0 ) bracket = null;\n            }\n\n            token = this.tokenizer.nextToken();\n        }\n\n        if ( this.tokenizer.endOfFile() ) end = true;\n        if ( brackets.length > 0 ) this.unclosedBracket(bracket);\n\n        if ( end && colon ) {\n            while ( tokens.length ) {\n                token = tokens[tokens.length - 1][0];\n                if ( token !== 'space' && token !== 'comment' ) break;\n                this.tokenizer.back(tokens.pop());\n            }\n            this.decl(tokens);\n            return;\n        } else {\n            this.unknownWord(tokens);\n        }\n    }\n\n    rule(tokens) {\n        tokens.pop();\n\n        let node = new Rule();\n        this.init(node, tokens[0][2], tokens[0][3]);\n\n        node.raws.between = this.spacesAndCommentsFromEnd(tokens);\n        this.raw(node, 'selector', tokens);\n        this.current = node;\n    }\n\n    decl(tokens) {\n        let node = new Declaration();\n        this.init(node);\n\n        let last = tokens[tokens.length - 1];\n        if ( last[0] === ';' ) {\n            this.semicolon = true;\n            tokens.pop();\n        }\n        if ( last[4] ) {\n            node.source.end = { line: last[4], column: last[5] };\n        } else {\n            node.source.end = { line: last[2], column: last[3] };\n        }\n\n        while ( tokens[0][0] !== 'word' ) {\n            if ( tokens.length === 1 ) this.unknownWord(tokens);\n            node.raws.before += tokens.shift()[1];\n        }\n        node.source.start = { line: tokens[0][2], column: tokens[0][3] };\n\n        node.prop = '';\n        while ( tokens.length ) {\n            let type = tokens[0][0];\n            if ( type === ':' || type === 'space' || type === 'comment' ) {\n                break;\n            }\n            node.prop += tokens.shift()[1];\n        }\n\n        node.raws.between = '';\n\n        let token;\n        while ( tokens.length ) {\n            token = tokens.shift();\n\n            if ( token[0] === ':' ) {\n                node.raws.between += token[1];\n                break;\n            } else {\n                node.raws.between += token[1];\n            }\n        }\n\n        if ( node.prop[0] === '_' || node.prop[0] === '*' ) {\n            node.raws.before += node.prop[0];\n            node.prop = node.prop.slice(1);\n        }\n        node.raws.between += this.spacesAndCommentsFromStart(tokens);\n        this.precheckMissedSemicolon(tokens);\n\n        for ( let i = tokens.length - 1; i > 0; i-- ) {\n            token = tokens[i];\n            if ( token[1].toLowerCase() === '!important' ) {\n                node.important = true;\n                let string = this.stringFrom(tokens, i);\n                string = this.spacesFromEnd(tokens) + string;\n                if ( string !== ' !important' ) node.raws.important = string;\n                break;\n\n            } else if (token[1].toLowerCase() === 'important') {\n                let cache = tokens.slice(0);\n                let str   = '';\n                for ( let j = i; j > 0; j-- ) {\n                    let type = cache[j][0];\n                    if ( str.trim().indexOf('!') === 0 && type !== 'space' ) {\n                        break;\n                    }\n                    str = cache.pop()[1] + str;\n                }\n                if ( str.trim().indexOf('!') === 0 ) {\n                    node.important = true;\n                    node.raws.important = str;\n                    tokens = cache;\n                }\n            }\n\n            if ( token[0] !== 'space' && token[0] !== 'comment' ) {\n                break;\n            }\n        }\n\n        this.raw(node, 'value', tokens);\n\n        if ( node.value.indexOf(':') !== -1 ) this.checkMissedSemicolon(tokens);\n    }\n\n    atrule(token) {\n        let node  = new AtRule();\n        node.name = token[1].slice(1);\n        if ( node.name === '' ) {\n            this.unnamedAtrule(node, token);\n        }\n        this.init(node, token[2], token[3]);\n\n        let prev;\n        let shift;\n        let last   = false;\n        let open   = false;\n        let params = [];\n\n        while ( !this.tokenizer.endOfFile() ) {\n            token = this.tokenizer.nextToken();\n\n            if ( token[0] === ';' ) {\n                node.source.end = { line: token[2], column: token[3] };\n                this.semicolon = true;\n                break;\n            } else if ( token[0] === '{' ) {\n                open = true;\n                break;\n            } else if ( token[0] === '}') {\n                if ( params.length > 0 ) {\n                    shift = params.length - 1;\n                    prev = params[shift];\n                    while ( prev && prev[0] === 'space' ) {\n                        prev = params[--shift];\n                    }\n                    if ( prev ) {\n                        node.source.end = { line: prev[4], column: prev[5] };\n                    }\n                }\n                this.end(token);\n                break;\n            } else {\n                params.push(token);\n            }\n\n            if ( this.tokenizer.endOfFile() ) {\n                last = true;\n                break;\n            }\n        }\n\n        node.raws.between = this.spacesAndCommentsFromEnd(params);\n        if ( params.length ) {\n            node.raws.afterName = this.spacesAndCommentsFromStart(params);\n            this.raw(node, 'params', params);\n            if ( last ) {\n                token = params[params.length - 1];\n                node.source.end   = { line: token[4], column: token[5] };\n                this.spaces       = node.raws.between;\n                node.raws.between = '';\n            }\n        } else {\n            node.raws.afterName = '';\n            node.params         = '';\n        }\n\n        if ( open ) {\n            node.nodes   = [];\n            this.current = node;\n        }\n    }\n\n    end(token) {\n        if ( this.current.nodes && this.current.nodes.length ) {\n            this.current.raws.semicolon = this.semicolon;\n        }\n        this.semicolon = false;\n\n        this.current.raws.after = (this.current.raws.after || '') + this.spaces;\n        this.spaces = '';\n\n        if ( this.current.parent ) {\n            this.current.source.end = { line: token[2], column: token[3] };\n            this.current = this.current.parent;\n        } else {\n            this.unexpectedClose(token);\n        }\n    }\n\n    endFile() {\n        if ( this.current.parent ) this.unclosedBlock();\n        if ( this.current.nodes && this.current.nodes.length ) {\n            this.current.raws.semicolon = this.semicolon;\n        }\n        this.current.raws.after = (this.current.raws.after || '') + this.spaces;\n    }\n\n    freeSemicolon(token) {\n        this.spaces += token[1];\n        if ( this.current.nodes ) {\n            let prev = this.current.nodes[this.current.nodes.length - 1];\n            if ( prev && prev.type === 'rule' && !prev.raws.ownSemicolon ) {\n                prev.raws.ownSemicolon = this.spaces;\n                this.spaces = '';\n            }\n        }\n    }\n\n    // Helpers\n\n    init(node, line, column) {\n        this.current.push(node);\n\n        node.source = { start: { line, column }, input: this.input };\n        node.raws.before = this.spaces;\n        this.spaces = '';\n        if ( node.type !== 'comment' ) this.semicolon = false;\n    }\n\n    raw(node, prop, tokens) {\n        let token, type;\n        let length = tokens.length;\n        let value  = '';\n        let clean  = true;\n        for ( let i = 0; i < length; i += 1 ) {\n            token = tokens[i];\n            type  = token[0];\n            if ( type === 'comment' || type === 'space' && i === length - 1 ) {\n                clean = false;\n            } else {\n                value += token[1];\n            }\n        }\n        if ( !clean ) {\n            let raw = tokens.reduce( (all, i) => all + i[1], '');\n            node.raws[prop] = { value, raw };\n        }\n        node[prop] = value;\n    }\n\n    spacesAndCommentsFromEnd(tokens) {\n        let lastTokenType;\n        let spaces = '';\n        while ( tokens.length ) {\n            lastTokenType = tokens[tokens.length - 1][0];\n            if ( lastTokenType !== 'space' &&\n                lastTokenType !== 'comment' ) break;\n            spaces = tokens.pop()[1] + spaces;\n        }\n        return spaces;\n    }\n\n    spacesAndCommentsFromStart(tokens) {\n        let next;\n        let spaces = '';\n        while ( tokens.length ) {\n            next = tokens[0][0];\n            if ( next !== 'space' && next !== 'comment' ) break;\n            spaces += tokens.shift()[1];\n        }\n        return spaces;\n    }\n\n    spacesFromEnd(tokens) {\n        let lastTokenType;\n        let spaces = '';\n        while ( tokens.length ) {\n            lastTokenType = tokens[tokens.length - 1][0];\n            if ( lastTokenType !== 'space' ) break;\n            spaces = tokens.pop()[1] + spaces;\n        }\n        return spaces;\n    }\n\n    stringFrom(tokens, from) {\n        let result = '';\n        for ( let i = from; i < tokens.length; i++ ) {\n            result += tokens[i][1];\n        }\n        tokens.splice(from, tokens.length - from);\n        return result;\n    }\n\n    colon(tokens) {\n        let brackets = 0;\n        let token, type, prev;\n        for ( let i = 0; i < tokens.length; i++ ) {\n            token = tokens[i];\n            type  = token[0];\n\n            if ( type === '(' ) {\n                brackets += 1;\n            } else if ( type === ')' ) {\n                brackets -= 1;\n            } else if ( brackets === 0 && type === ':' ) {\n                if ( !prev ) {\n                    this.doubleColon(token);\n                } else if ( prev[0] === 'word' && prev[1] === 'progid' ) {\n                    continue;\n                } else {\n                    return i;\n                }\n            }\n\n            prev = token;\n        }\n        return false;\n    }\n\n    // Errors\n\n    unclosedBracket(bracket) {\n        throw this.input.error('Unclosed bracket', bracket[2], bracket[3]);\n    }\n\n    unknownWord(tokens) {\n        throw this.input.error('Unknown word', tokens[0][2], tokens[0][3]);\n    }\n\n    unexpectedClose(token) {\n        throw this.input.error('Unexpected }', token[2], token[3]);\n    }\n\n    unclosedBlock() {\n        let pos = this.current.source.start;\n        throw this.input.error('Unclosed block', pos.line, pos.column);\n    }\n\n    doubleColon(token) {\n        throw this.input.error('Double colon', token[2], token[3]);\n    }\n\n    unnamedAtrule(node, token) {\n        throw this.input.error('At-rule without name', token[2], token[3]);\n    }\n\n    precheckMissedSemicolon(tokens) {\n        // Hook for Safe Parser\n        tokens;\n    }\n\n    checkMissedSemicolon(tokens) {\n        let colon = this.colon(tokens);\n        if ( colon === false ) return;\n\n        let founded = 0;\n        let token;\n        for ( let j = colon - 1; j >= 0; j-- ) {\n            token = tokens[j];\n            if ( token[0] !== 'space' ) {\n                founded += 1;\n                if ( founded === 2 ) break;\n            }\n        }\n        throw this.input.error('Missed semicolon', token[2], token[3]);\n    }\n\n}\n"]}
|