gistfile1.txt

// Fib.groovy

package g7.tests.classgen

class Fib {

	static fib(n) {
		if(n < 2)
			n
		else
			fib(n-1) + fib(n-2)
	}

	static void main(args){
		println fib(5)
		println fib(10)
		println fib(15)
		println fib(20)
		println fib(25)
		println fib(30)
		println fib(35)
	}

}

// run 'ant test' to make test cases generate some .class files
$ ant clean && ant test

// command to run on Cygwin
$ java -Xms512M -Xmx512M -cp ".;./target/classes" -Xint -XX:+EnableInvokeDynamic g7.tests.classgen.Fib

//
// Here's the disassemble of Fib.class
// 
// class version 51.0 (51)
// access flags 1
public class g7/tests/classgen/Fib {

  // compiled from: Fib.groovy

  // access flags 9
  public static fib(Ljava/lang/Object;)Ljava/lang/Object;
   L0
    ALOAD 0
    ICONST_2
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.__lt__(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    CHECKCAST java/lang/Boolean
    INVOKEVIRTUAL java/lang/Boolean.booleanValue()Z
    IFEQ L1
    ALOAD 0
    GOTO L2
   L1
    ALOAD 0
    ICONST_1
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.minus(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.static:g7|tests|classgen|Fib:fib(Ljava/lang/Object;)Ljava/lang/Object;
    ALOAD 0
    ICONST_2
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.minus(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.static:g7|tests|classgen|Fib:fib(Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.plus(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
   L2
    ARETURN
   L3
    LOCALVARIABLE n Ljava/lang/Object; L0 L3 0
    MAXSTACK = 3
    MAXLOCALS = 1

  // access flags 9
  public static main([Ljava/lang/String;)V
   L0
    ACONST_NULL
    ICONST_5
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.static:g7|tests|classgen|Fib:fib(Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.println(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    POP
    ACONST_NULL
    BIPUSH 10
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.static:g7|tests|classgen|Fib:fib(Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.println(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    POP
    ACONST_NULL
    BIPUSH 15
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.static:g7|tests|classgen|Fib:fib(Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.println(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    POP
    ACONST_NULL
    BIPUSH 20
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.static:g7|tests|classgen|Fib:fib(Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.println(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    POP
    ACONST_NULL
    BIPUSH 25
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.static:g7|tests|classgen|Fib:fib(Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.println(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    POP
    ACONST_NULL
    BIPUSH 30
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.static:g7|tests|classgen|Fib:fib(Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.println(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    POP
    ACONST_NULL
    BIPUSH 35
    INVOKESTATIC java/lang/Integer.valueOf(I)Ljava/lang/Integer;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.static:g7|tests|classgen|Fib:fib(Ljava/lang/Object;)Ljava/lang/Object;
    INVOKEDYNAMIC java/lang/dyn/Dynamic.println(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    POP
    RETURN
   L1
    LOCALVARIABLE args [Ljava/lang/String; L0 L1 0
    MAXSTACK = 2
    MAXLOCALS = 1

  // access flags 8
  static <clinit>()V
    LDC Lg7/tests/classgen/Fib;.class
    INVOKESTATIC com/chanwit/g7/runtime/G7Bootstrap.registerBootstrap(Ljava/lang/Class;)V
    RETURN
    MAXSTACK = 1
    MAXLOCALS = 0
}