text: /*
  **  ASTq -- Abstract Syntax Tree (AST) Query Engine
  **  Copyright (c) 2014-2021 Dr. Ralf S. Engelschall <rse@engelschall.com>
  **
  **  Permission is hereby granted, free of charge, to any person obtaining
  **  a copy of this software and associated documentation files (the
  **  "Software"), to deal in the Software without restriction, including
  **  without limitation the rights to use, copy, modify, merge, publish,
  **  distribute, sublicense, and/or sell copies of the Software, and to
  **  permit persons to whom the Software is furnished to do so, subject to
  **  the following conditions:
  **
  **  The above copyright notice and this permission notice shall be included
  **  in all copies or substantial portions of the Software.
  **
  **  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  **  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  **  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  **  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  **  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  **  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  **  SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
  
  export default class ASTQFuncs {
      constructor () {
          this._funcs = {}
          return this
      }
      register (name, func) {
          this._funcs[name] = func
      }
      run (name, args) {
          let func = this._funcs[name]
          if (typeof func !== "function")
              throw new Error("invalid function \"" + name + "\"")
          return func.apply(null, args)
      }
  }
  
  