text: /*
   * Copyright (C) 2017 Apple Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
   */
  "use strict";
  
  function createLiteral(config)
  {
      class GenericLiteral extends Expression {
          constructor(origin, value)
          {
              super(origin);
              this._value = value;
              this.type = config.createType.call(this, origin, value);
          }
          
          static withType(origin, value, type)
          {
              let result = new GenericLiteral(origin, value);
              result.type = TypeRef.wrap(type);
              return result;
          }
          
          get value() { return this._value; }
          
          // This is necessary because once we support int64, we'll need that to be represented as an object
          // rather than as a primitive. Then we'll need to convert.
          get valueForSelectedType()
          {
              let type = this.type.type.unifyNode;
              if (!type)
                  throw new Error("Cannot get type for " + this);
              let func = type["formatValueFrom" + config.literalClassName];
              if (!func)
                  throw new Error("Cannot get function to format type for " + config.literalClassName + " from " + type);
              return func.call(type, this.value);
          }
          
          get isConstexpr() { return true; }
          get isLiteral() { return true; }
          
          get negConstexpr()
          {
              if (!config.negConstexpr)
                  return null;
              
              return () => config.negConstexpr.call(this);
          }
          
          unifyImpl(unificationContext, other)
          {
              if (!(other instanceof GenericLiteral))
                  return false;
              return this.value == other.value;
          }
          
          toString()
          {
              return config.preferredTypeName + "Literal<" + this.value + ">";
          }
      }
      
      return GenericLiteral;
  }
  
  