var TYPE = require('../../tokenizer').TYPE; 
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var STRING = TYPE.String; 
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var IDENT = TYPE.Ident; 
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var URL = TYPE.Url; 
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var FUNCTION = TYPE.Function; 
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var LEFTPARENTHESIS = TYPE.LeftParenthesis; 
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module.exports = { 
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    parse: { 
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        prelude: function() { 
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            var children = this.createList(); 
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            this.scanner.skipSC(); 
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            switch (this.scanner.tokenType) { 
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                case STRING: 
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                    children.push(this.String()); 
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                    break; 
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                case URL: 
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                case FUNCTION: 
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                    children.push(this.Url()); 
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                    break; 
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                default: 
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                    this.error('String or url() is expected'); 
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            } 
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            if (this.lookupNonWSType(0) === IDENT || 
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                this.lookupNonWSType(0) === LEFTPARENTHESIS) { 
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                children.push(this.WhiteSpace()); 
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                children.push(this.MediaQueryList()); 
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            } 
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            return children; 
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        }, 
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        block: null 
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    } 
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}; 
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