apg-js-examples
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Examples of using the suite of apg-js applications and libraries.
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JavaScript
// copyright: Copyright (c) 2021 Lowell D. Thomas, all rights reserved<br>
// license: BSD-2-Clause (https://opensource.org/licenses/BSD-2-Clause)<br>
//
// Generated by apg-js, Version 4.0.0 [apg-js](https://github.com/ldthomas/apg-js)
const grammarObject = function () {
// ```
// SUMMARY
// rules = 7
// udts = 0
// opcodes = 20
// --- ABNF original opcodes
// ALT = 0
// CAT = 3
// REP = 2
// RNM = 9
// TLS = 3
// TBS = 0
// TRG = 3
// --- SABNF superset opcodes
// UDT = 0
// AND = 0
// NOT = 0
// BKA = 0
// BKN = 0
// BKR = 0
// ABG = 0
// AEN = 0
// characters = [40 - 57]
// ```
/* OBJECT IDENTIFIER (for internal parser use) */
this.grammarObject = 'grammarObject';
/* RULES */
this.rules = [];
this.rules[0] = { name: 'phone-number', lower: 'phone-number', index: 0, isBkr: false };
this.rules[1] = { name: 'area-code', lower: 'area-code', index: 1, isBkr: false };
this.rules[2] = { name: 'office', lower: 'office', index: 2, isBkr: false };
this.rules[3] = { name: 'subscriber', lower: 'subscriber', index: 3, isBkr: false };
this.rules[4] = { name: 'gt-2', lower: 'gt-2', index: 4, isBkr: false };
this.rules[5] = { name: 'not-9', lower: 'not-9', index: 5, isBkr: false };
this.rules[6] = { name: 'digit', lower: 'digit', index: 6, isBkr: false };
/* UDTS */
this.udts = [];
/* OPCODES */
/* phone-number */
this.rules[0].opcodes = [];
this.rules[0].opcodes[0] = { type: 2, children: [1, 2, 3, 4, 5, 6] }; // CAT
this.rules[0].opcodes[1] = { type: 7, string: [40] }; // TLS
this.rules[0].opcodes[2] = { type: 4, index: 1 }; // RNM(area-code)
this.rules[0].opcodes[3] = { type: 7, string: [41] }; // TLS
this.rules[0].opcodes[4] = { type: 4, index: 2 }; // RNM(office)
this.rules[0].opcodes[5] = { type: 7, string: [45] }; // TLS
this.rules[0].opcodes[6] = { type: 4, index: 3 }; // RNM(subscriber)
/* area-code */
this.rules[1].opcodes = [];
this.rules[1].opcodes[0] = { type: 2, children: [1, 2, 3] }; // CAT
this.rules[1].opcodes[1] = { type: 4, index: 4 }; // RNM(gt-2)
this.rules[1].opcodes[2] = { type: 4, index: 5 }; // RNM(not-9)
this.rules[1].opcodes[3] = { type: 4, index: 6 }; // RNM(digit)
/* office */
this.rules[2].opcodes = [];
this.rules[2].opcodes[0] = { type: 2, children: [1, 2] }; // CAT
this.rules[2].opcodes[1] = { type: 4, index: 4 }; // RNM(gt-2)
this.rules[2].opcodes[2] = { type: 3, min: 2, max: 2 }; // REP
this.rules[2].opcodes[3] = { type: 4, index: 6 }; // RNM(digit)
/* subscriber */
this.rules[3].opcodes = [];
this.rules[3].opcodes[0] = { type: 3, min: 4, max: 4 }; // REP
this.rules[3].opcodes[1] = { type: 4, index: 6 }; // RNM(digit)
/* gt-2 */
this.rules[4].opcodes = [];
this.rules[4].opcodes[0] = { type: 5, min: 50, max: 57 }; // TRG
/* not-9 */
this.rules[5].opcodes = [];
this.rules[5].opcodes[0] = { type: 5, min: 48, max: 56 }; // TRG
/* digit */
this.rules[6].opcodes = [];
this.rules[6].opcodes[0] = { type: 5, min: 48, max: 57 }; // TRG
// The `toString()` function will display the original grammar file(s) that produced these opcodes.
this.toString = function () {
let str = '';
str += ';\n';
str += '; Ref: Wikipedia, North American Numbering Plan\n';
str += ';\n';
str += 'phone-number = "(" area-code ")" office "-" subscriber\n';
str += 'area-code = gt-2 not-9 digit\n';
str += 'office = gt-2 2digit\n';
str += 'subscriber = 4digit\n';
str += 'gt-2 = %d50-57\n';
str += 'not-9 = %d48-56\n';
str += 'digit = %d48-57\n';
return str;
};
};