antlr-ng/dist/src/codegen/model/LeftRecursiveRuleFunction.js

Next generation ANTLR Tool

var __defProp = Object.defineProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
import { ANTLRv4Parser } from "../../generated/ANTLRv4Parser.js";
import { RuleFunction } from "./RuleFunction.js";
import { RuleContextDecl } from "./decl/RuleContextDecl.js";
import { RuleContextListDecl } from "./decl/RuleContextListDecl.js";
class LeftRecursiveRuleFunction extends RuleFunction {
  static {
    __name(this, "LeftRecursiveRuleFunction");
  }
  constructor(factory, r) {
    super(factory, r);
    const gen = factory.getGenerator();
    for (const [idAST, altLabel] of r.leftRecursiveRuleRefLabels) {
      const label = idAST.getText();
      const ruleRefAST = idAST.parent.children[1];
      if (ruleRefAST.getType() === ANTLRv4Parser.RULE_REF) {
        const targetRule = factory.g.getRule(ruleRefAST.getText());
        const ctxName = gen.target.getRuleFunctionContextStructName(targetRule);
        let d;
        if (idAST.parent.getType() === ANTLRv4Parser.ASSIGN) {
          d = new RuleContextDecl(factory, label, ctxName);
        } else {
          d = new RuleContextListDecl(factory, label, ctxName);
        }
        let struct = this.ruleCtx;
        if (this.altLabelCtxs) {
          const s = this.altLabelCtxs.get(altLabel);
          if (s) {
            struct = s;
          }
        }
        struct.addDecl(d);
      }
    }
  }
}
export {
  LeftRecursiveRuleFunction
};