35 lines
812 B
JavaScript
35 lines
812 B
JavaScript
|
var TYPE = require('../../tokenizer').TYPE;
|
||
|
|
|
||
|
|
var LEFTPARENTHESIS = TYPE.LeftParenthesis;
|
||
|
|
var RIGHTPARENTHESIS = TYPE.RightParenthesis;
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
name: 'Parentheses',
|
||
|
|
structure: {
|
||
|
|
children: [[]]
|
||
|
|
},
|
||
|
|
parse: function(readSequence, recognizer) {
|
||
|
|
var start = this.scanner.tokenStart;
|
||
|
|
var children = null;
|
||
|
|
|
||
|
|
this.eat(LEFTPARENTHESIS);
|
||
|
|
|
||
|
|
children = readSequence.call(this, recognizer);
|
||
|
|
|
||
|
|
if (!this.scanner.eof) {
|
||
|
|
this.eat(RIGHTPARENTHESIS);
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
type: 'Parentheses',
|
||
|
|
loc: this.getLocation(start, this.scanner.tokenStart),
|
||
|
|
children: children
|
||
|
|
};
|
||
|
|
},
|
||
|
|
generate: function(node) {
|
||
|
|
this.chunk('(');
|
||
|
|
this.children(node);
|
||
|
|
this.chunk(')');
|
||
|
|
}
|
||
|
|
};
|