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  • negative-grammar.js

  • §

    copyright: Copyright (c) 2024 Lowell D. Thomas, all rights reserved
    license: BSD-2-Clause (https://opensource.org/licenses/BSD-2-Clause)

    Generated by apg-js, Version 4.4.0 apg-js

    module.exports = function grammar(){
  • §
    SUMMARY
         rules = 6
          udts = 0
       opcodes = 16
           ---   ABNF original opcodes
           ALT = 1
           CAT = 2
           REP = 3
           RNM = 7
           TLS = 1
           TBS = 0
           TRG = 1
           ---   SABNF superset opcodes
           UDT = 0
           AND = 0
           NOT = 0
           BKA = 0
           BKN = 1
           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: 'line', lower: 'line', index: 0, isBkr: false };
      this.rules[1] = { name: 'begin-comment', lower: 'begin-comment', index: 1, isBkr: false };
      this.rules[2] = { name: 'text', lower: 'text', index: 2, isBkr: false };
      this.rules[3] = { name: 'comment-text', lower: 'comment-text', index: 3, isBkr: false };
      this.rules[4] = { name: 'other-text', lower: 'other-text', index: 4, isBkr: false };
      this.rules[5] = { name: 'vchar', lower: 'vchar', index: 5, isBkr: false };
    
      /* UDTS */
      this.udts = [];
    
      /* OPCODES */
      /* line */
      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: 1 };// REP
      this.rules[0].opcodes[2] = { type: 4, index: 1 };// RNM(begin-comment)
      this.rules[0].opcodes[3] = { type: 4, index: 2 };// RNM(text)
    
      /* begin-comment */
      this.rules[1].opcodes = [];
      this.rules[1].opcodes[0] = { type: 7, string: [47,47] };// TLS
    
      /* text */
      this.rules[2].opcodes = [];
      this.rules[2].opcodes[0] = { type: 1, children: [1,2] };// ALT
      this.rules[2].opcodes[1] = { type: 4, index: 4 };// RNM(other-text)
      this.rules[2].opcodes[2] = { type: 4, index: 3 };// RNM(comment-text)
    
      /* comment-text */
      this.rules[3].opcodes = [];
      this.rules[3].opcodes[0] = { type: 3, min: 1, max: Infinity };// REP
      this.rules[3].opcodes[1] = { type: 4, index: 5 };// RNM(vchar)
    
      /* other-text */
      this.rules[4].opcodes = [];
      this.rules[4].opcodes[0] = { type: 2, children: [1,3] };// CAT
      this.rules[4].opcodes[1] = { type: 16 };// BKN
      this.rules[4].opcodes[2] = { type: 4, index: 1 };// RNM(begin-comment)
      this.rules[4].opcodes[3] = { type: 3, min: 1, max: Infinity };// REP
      this.rules[4].opcodes[4] = { type: 4, index: 5 };// RNM(vchar)
    
      /* vchar */
      this.rules[5].opcodes = [];
      this.rules[5].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 += "line = [begin-comment] text\n";
        str += "begin-comment = \"//\"\n";
        str += "text = other-text / comment-text\n";
        str += "comment-text = 1*vchar\n";
        str += "other-text = !!begin-comment 1*vchar\n";
        str += "vchar = %d32-126\n";
        return str;
      }
    }