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File: test/test-recursion.js

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File: test/test-recursion.js
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: Grammar Template
Template engine in PHP and other languages
Author: By
Last change:
Date: 2 years ago
Size: 2,569 bytes
 

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var GrammarTemplate = require("../src/js/GrammarTemplate.js"), echo = console.log; echo('GrammarTemplate.VERSION = ' + GrammarTemplate.VERSION); echo( ); /* i.e: foreach "expression:terms" as "term": foreach "term:factors" as "factor": .. here an :EXPR template is defined which itself uses (anonymous) sub-templates it is equivalent to (expand sub-templates to distinct): <:FACTOR>:=[<lhs>[ <?op> <rhs|NULL>]] <:TERM>:=[(<factor:FACTOR>[ AND <*factor:FACTOR>])] <:EXPR>:=[<term:TERM>[ OR <*term:TERM>]] <expression:EXPR> <expression2:EXPR> */ var tpl = "<:EXPR>:=[<term>:=[(<factor>:=[<globalNegation:NEG><lhs>[ <?op:OP> <rhs|NULL>]][ AND <*factor>])][ OR <*term>]]<expression:EXPR>\n<expression2:EXPR>"; var expr = new GrammarTemplate( tpl ); GrammarTemplate.fnGlobal['NEG'] = function( val ) { return val ? 'NOT ' : ''; }; expr.fn['OP'] = function( val ) { return '!=' === val ? '<>' : val; }; echo("input template:"); echo(tpl); echo( ); echo("output:"); echo(expr.render({ globalNegation: true, expression : [ // term [ // factor {lhs: 1, op: '=', rhs: 1}, // factor {lhs: 1, op: '=', rhs: 2}, // factor {lhs: 1, op: '=', rhs: 3} ], // term [ // factor {lhs: 1, op: '<', rhs: 1}, // factor {lhs: 1, op: '<', rhs: 2}, // factor {lhs: 1, op: '<', rhs: 3} ], // term [ // factor {lhs: 1, op: '>', rhs: 1}, // factor {lhs: 1, op: '>', rhs: 2}, // factor {lhs: 1, op: '>', rhs: 3} ] ], expression2 : [ // term [ // factor {lhs: 2, op: '=', rhs: 1}, // factor {lhs: 2, op: '=', rhs: 2}, // factor {lhs: 2, op: '=', rhs: 3} ], // term [ // factor {lhs: 2, op: '<', rhs: 1}, // factor {lhs: 2, op: '<', rhs: 2}, // factor {lhs: 2, op: '<', rhs: 3} ], // term [ // factor {lhs: 2, op: '>', rhs: 1}, // factor {lhs: 2, op: '>', rhs: 2}, // factor {lhs: 2, op: '>', rhs: 3} ], // term [ // factor {lhs: 3}, // factor {lhs: 3, op: '!='} ] ] }));