antlr4ng/dist/dfa/DFASerializer.mjs

Alternative JavaScript/TypeScript runtime for ANTLR4

var __defProp = Object.defineProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });

// src/dfa/DFASerializer.ts
var DFASerializer = class {
  static {
    __name(this, "DFASerializer");
  }
  dfa;
  vocabulary;
  constructor(dfa, vocabulary) {
    this.dfa = dfa;
    this.vocabulary = vocabulary;
  }
  toString() {
    if (!this.dfa.s0) {
      return "";
    }
    let buf = "";
    const states = this.dfa.getStates();
    for (const s of states) {
      let n = 0;
      n = s.edges.length;
      for (let i = 0; i < n; i++) {
        const t = s.edges[i];
        if (t && t.stateNumber !== 2147483647) {
          buf += this.getStateString(s);
          const label = this.getEdgeLabel(i);
          buf += "-";
          buf += label;
          buf += "->";
          buf += this.getStateString(t);
          buf += "\n";
        }
      }
    }
    return buf;
  }
  getEdgeLabel(i) {
    const name = this.vocabulary.getDisplayName(i - 1);
    return `${name}`;
  }
  getStateString(s) {
    const n = s.stateNumber;
    const baseStateStr = (s.isAcceptState ? ":" : "") + "s" + n + (s.requiresFullContext ? "^" : "");
    if (s.isAcceptState) {
      if (s.predicates !== null) {
        return `${baseStateStr}=>${s.predicates.toString()}`;
      }
      return `${baseStateStr}=>${s.prediction}`;
    } else {
      return `${baseStateStr}`;
    }
  }
};
export {
  DFASerializer
};