@agoric/babel-parser/lib/parser/node.js

A JavaScript parser

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.NodeUtils = void 0;

var _util = _interopRequireDefault(require("./util"));

var _location = require("../util/location");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

class Node {
  constructor(parser, pos, loc) {
    this.type = "";
    this.start = pos;
    this.end = 0;
    this.loc = new _location.SourceLocation(loc);
    if (parser && parser.options.ranges) this.range = [pos, 0];
    if (parser && parser.filename) this.loc.filename = parser.filename;
  }

  __clone() {
    const newNode = new Node();
    const keys = Object.keys(this);

    for (let i = 0, length = keys.length; i < length; i++) {
      const key = keys[i];

      if (key !== "leadingComments" && key !== "trailingComments" && key !== "innerComments") {
        newNode[key] = this[key];
      }
    }

    return newNode;
  }

}

class NodeUtils extends _util.default {
  startNode() {
    return new Node(this, this.state.start, this.state.startLoc);
  }

  startNodeAt(pos, loc) {
    return new Node(this, pos, loc);
  }

  startNodeAtNode(type) {
    return this.startNodeAt(type.start, type.loc.start);
  }

  finishNode(node, type) {
    return this.finishNodeAt(node, type, this.state.lastTokEnd, this.state.lastTokEndLoc);
  }

  finishNodeAt(node, type, pos, loc) {
    if (process.env.NODE_ENV !== "production" && node.end > 0) {
      throw new Error("Do not call finishNode*() twice on the same node." + " Instead use resetEndLocation() or change type directly.");
    }

    node.type = type;
    node.end = pos;
    node.loc.end = loc;
    if (this.options.ranges) node.range[1] = pos;
    this.processComment(node);
    return node;
  }

  resetStartLocation(node, start, startLoc) {
    node.start = start;
    node.loc.start = startLoc;
    if (this.options.ranges) node.range[0] = start;
  }

  resetEndLocation(node, end = this.state.lastTokEnd, endLoc = this.state.lastTokEndLoc) {
    node.end = end;
    node.loc.end = endLoc;
    if (this.options.ranges) node.range[1] = end;
  }

  resetStartLocationFromNode(node, locationNode) {
    this.resetStartLocation(node, locationNode.start, locationNode.loc.start);
  }

}

exports.NodeUtils = NodeUtils;