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Annotation of loncom/html/adm/LC_math_editor/src/operator.js, revision 1.2

1.1       damieng     1: /*
                      2: 
                      3: Copyright (C) 2014  Michigan State University Board of Trustees
                      4: 
                      5: The JavaScript code in this page is free software: you can
                      6: redistribute it and/or modify it under the terms of the GNU
                      7: General Public License (GNU GPL) as published by the Free Software
                      8: Foundation, either version 3 of the License, or (at your option)
                      9: any later version.  The code is distributed WITHOUT ANY WARRANTY;
                     10: without even the implied warranty of MERCHANTABILITY or FITNESS
                     11: FOR A PARTICULAR PURPOSE.  See the GNU GPL for more details.
                     12: 
                     13: As additional permission under GNU GPL version 3 section 7, you
                     14: may distribute non-source (e.g., minimized or compacted) forms of
                     15: that code without the copy of the GNU GPL normally required by
                     16: section 4, provided you include this license notice and a URL
                     17: through which recipients can access the Corresponding Source.
                     18: 
                     19: */
                     20: 
1.2     ! damieng    21: "use strict";
        !            22: 
1.1       damieng    23: /**
                     24:  * Null denotation function
                     25:  * @callback nudFunction
                     26:  * @param {Parser} p - the parser
                     27:  * @returns {ENode}
                     28:  */
                     29: 
                     30: /**
                     31:  * Left denotation function
                     32:  * @callback ledFunction
                     33:  * @param {Parser} p - the parser
                     34:  * @param {ENode} left - left node
                     35:  * @returns {ENode}
                     36:  */
                     37: 
                     38: /**
                     39:  * Parser operator, like "(".
                     40:  * @constructor
                     41:  * @param {string} id - Characters used to recognize the operator
                     42:  * @param {number} arity (UNKNOWN, UNARY, BINARY, TERNARY)
                     43:  * @param {number} lbp - left binding power
                     44:  * @param {number} rbp - right binding power
                     45:  * @param {nudFunction} nud - Null denotation function
                     46:  * @param {ledFunction} led - Left denotation function
                     47:  */
                     48: function Operator(id, arity, lbp, rbp, nud, led) {
                     49:     this.id = id;
                     50:     this.arity = arity;
                     51:     this.lbp = lbp;
                     52:     this.rbp = rbp;
                     53:     this.nud = nud;
                     54:     this.led = led;
                     55: }
                     56: 
                     57: Operator.UNKNOWN = 0;
                     58: Operator.UNARY = 1;
                     59: Operator.BINARY = 2;
                     60: Operator.TERNARY = 3;