初始化

康凯

2022-05-20 aa4c235a8ca67ea8b731f90c951a465e92c0a865

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var TYPE = require('../../tokenizer').TYPE;
 
var IDENTIFIER = TYPE.Identifier;
var FUNCTION = TYPE.Function;
var COLON = TYPE.Colon;
var RIGHTPARENTHESIS = TYPE.RightParenthesis;
 
// : ident [ '(' .. ')' ]?
module.exports = {
    name: 'PseudoClassSelector',
    structure: {
        name: String,
        children: [['Raw'], null]
    },
    parse: function() {
        var start = this.scanner.tokenStart;
        var children = null;
        var name;
        var nameLowerCase;
 
        this.scanner.eat(COLON);
 
        if (this.scanner.tokenType === FUNCTION) {
            name = this.scanner.consumeFunctionName();
            nameLowerCase = name.toLowerCase();
 
            if (this.pseudo.hasOwnProperty(nameLowerCase)) {
                this.scanner.skipSC();
                children = this.pseudo[nameLowerCase].call(this);
                this.scanner.skipSC();
            } else {
                children = this.createList();
                children.push(
                    this.Raw(this.scanner.currentToken, 0, 0, false, false)
                );
            }
 
            this.scanner.eat(RIGHTPARENTHESIS);
        } else {
            name = this.scanner.consume(IDENTIFIER);
        }
 
        return {
            type: 'PseudoClassSelector',
            loc: this.getLocation(start, this.scanner.tokenStart),
            name: name,
            children: children
        };
    },
    generate: function(node) {
        this.chunk(':');
        this.chunk(node.name);
 
        if (node.children !== null) {
            this.chunk('(');
            this.children(node);
            this.chunk(')');
        }
    },
    walkContext: 'function'
};