Java

Eval JavaScript Returning Int

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Demonstrates getting the completion value of a JavaScript that returns an integer. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    //  This example demonstrates getting the completion value of a script,
    //  where the last evaluated expression is an integer.

    //  The Javascript run in this example is shown below.

    //  Load the JavaScript from a file.
    CkStringBuilder sbScript = new CkStringBuilder();
    success = sbScript.LoadFile("js_eval_return_int.js","utf-8");
    if (success == false) {
        System.out.println(sbScript.lastErrorText());
        return;
        }

    CkJs js = new CkJs();
    CkJsonObject result = new CkJsonObject();

    //  Run the JavaScript
    //  Eval returns the completion value of the script. This is generally the value of the last evaluated expression.
    //  In this case, the last evaluated expression is an int.
    success = js.Eval(sbScript,result);
    if (success == false) {
        System.out.println(sbScript.lastErrorText());
        return;
        }

    result.put_EmitCompact(false);
    System.out.println(result.emit());

    //  Output:

    //  {
    //    "type": "int",
    //    "value": 42
    //  }
  }
}