apg-js-examples
Version:
Examples of using the suite of apg-js applications and libraries.
62 lines (56 loc) • 1.89 kB
JavaScript
// copyright: Copyright (c) 2024 Lowell D. Thomas, all rights reserved<br>
// license: BSD-2-Clause (https://opensource.org/licenses/BSD-2-Clause)<br>
//
// Generated by apg-js, Version 4.4.0 [apg-js](https://github.com/ldthomas/apg-js)
module.exports = function grammar(){
// ```
// SUMMARY
// rules = 2
// udts = 0
// opcodes = 6
// --- ABNF original opcodes
// ALT = 0
// CAT = 1
// REP = 1
// RNM = 1
// TLS = 1
// TBS = 0
// TRG = 1
// --- SABNF superset opcodes
// UDT = 0
// AND = 0
// NOT = 0
// BKA = 1
// BKN = 0
// BKR = 0
// ABG = 0
// AEN = 0
// characters = [32 - 126]
// ```
/* OBJECT IDENTIFIER (for internal parser use) */
this.grammarObject = 'grammarObject';
/* RULES */
this.rules = [];
this.rules[0] = { name: 'rule', lower: 'rule', index: 0, isBkr: false };
this.rules[1] = { name: 'text', lower: 'text', index: 1, isBkr: false };
/* UDTS */
this.udts = [];
/* OPCODES */
/* rule */
this.rules[0].opcodes = [];
this.rules[0].opcodes[0] = { type: 2, children: [1,3] };// CAT
this.rules[0].opcodes[1] = { type: 3, min: 0, max: Infinity };// REP
this.rules[0].opcodes[2] = { type: 4, index: 1 };// RNM(text)
this.rules[0].opcodes[3] = { type: 15 };// BKA
this.rules[0].opcodes[4] = { type: 7, string: [32,101,110,100] };// TLS
/* text */
this.rules[1].opcodes = [];
this.rules[1].opcodes[0] = { type: 5, min: 32, max: 126 };// TRG
// The `toString()` function will display the original grammar file(s) that produced these opcodes.
this.toString = function toString(){
let str = "";
str += "rule = *text &&\" end\"\n";
str += "text = %d32-126\n";
return str;
}
}