Java Code Examples for org.objectweb.asm.MethodVisitor#visitIincInsn()

The following examples show how to use org.objectweb.asm.MethodVisitor#visitIincInsn() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: Despector   File: BasicTests.java    License: MIT License 5 votes vote down vote up
@Test
public void testLocals() {
    TestMethodBuilder builder = new TestMethodBuilder("main", "()V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);
    Label end = new Label();
    mv.visitLdcInsn("Hello");
    mv.visitVarInsn(ASTORE, 0);
    Label start2 = new Label();
    mv.visitLabel(start2);
    mv.visitInsn(ICONST_2);
    mv.visitVarInsn(ISTORE, 1);
    mv.visitIincInsn(1, 5);
    mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", true);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("s", "Ljava/lang/String;", null, start, end, 0);
    mv.visitLocalVariable("a", "I", null, start2, end, 1);

    String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "main");
    String good = "fun main() {\n"
            + "    val s: String = \"Hello\"\n"
            + "    var a: Int = 2\n"
            + "    a += 5\n"
            + "    println(s)\n"
            + "}";
    Assert.assertEquals(good, insn);
}
 
Example 2
Source Project: Despector   File: WhileTests.java    License: MIT License 5 votes vote down vote up
@Test
public void testFor() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(I)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);
    Label end = new Label();
    Label l1 = new Label();
    mv.visitInsn(ICONST_0);
    mv.visitVarInsn(ISTORE, 0);
    mv.visitLabel(l1);
    mv.visitVarInsn(ILOAD, 0);
    mv.visitInsn(ICONST_5);
    mv.visitJumpInsn(IF_ICMPGE, end);
    mv.visitMethodInsn(INVOKESTATIC, THIS_TYPE.getInternalName(), "body", "()V", false);
    mv.visitIincInsn(0, 1);
    mv.visitJumpInsn(GOTO, l1);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("i", "I", null, start, end, 0);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "for (i = 0; i < 5; i++) {\n"
            + "    org.spongepowered.test.decompile.WhileTests.body();\n"
            + "}";
    Assert.assertEquals(good, insn);
}
 
Example 3
Source Project: Despector   File: WhileTests.java    License: MIT License 5 votes vote down vote up
@Test
public void testForInverse() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(I)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);
    Label end = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    mv.visitInsn(ICONST_0);
    mv.visitVarInsn(ISTORE, 0);
    mv.visitJumpInsn(GOTO, l2);
    mv.visitLabel(l1);
    mv.visitMethodInsn(INVOKESTATIC, THIS_TYPE.getInternalName(), "body", "()V", false);
    mv.visitIincInsn(0, 1);
    mv.visitLabel(l2);
    mv.visitVarInsn(ILOAD, 0);
    mv.visitInsn(ICONST_5);
    mv.visitJumpInsn(IF_ICMPLT, l1);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("i", "I", null, start, end, 0);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "for (i = 0; i < 5; i++) {\n"
            + "    org.spongepowered.test.decompile.WhileTests.body();\n"
            + "}";
    Assert.assertEquals(good, insn);
}
 
Example 4
@Override
public void accept(final MethodVisitor methodVisitor) {
	methodVisitor.visitIincInsn(var, incr);
	acceptAnnotations(methodVisitor);
}
 
Example 5
Source Project: Concurnas   File: IincInsnNode.java    License: MIT License 4 votes vote down vote up
@Override
public void accept(final MethodVisitor methodVisitor) {
  methodVisitor.visitIincInsn(var, incr);
  acceptAnnotations(methodVisitor);
}
 
Example 6
@Override
public void accept(MethodVisitor visitor)
{
	visitor.visitIincInsn(index, inc);
}
 
Example 7
private int storeP(final MethodVisitor mv, final int p) {
    if (p != 0) {
        mv.visitIincInsn(V_P, p);
    }
    return 0;
}
 
Example 8
@Override
public void accept(final MethodVisitor mv) {
  mv.visitIincInsn(var, incr);
  acceptAnnotations(mv);
}
 
Example 9
private void writeOptimizedForEachLoop(
        CompileStack compileStack,
        OperandStack operandStack,
        MethodVisitor mv,
        ForStatement loop,
        Expression collectionExpression,
        ClassNode collectionType,
        Parameter loopVariable) {
    BytecodeVariable variable = compileStack.defineVariable(loopVariable, false);

    Label continueLabel = compileStack.getContinueLabel();
    Label breakLabel = compileStack.getBreakLabel();

    AsmClassGenerator acg = controller.getAcg();

    // load array on stack
    collectionExpression.visit(acg);
    mv.visitInsn(DUP);
    int array = compileStack.defineTemporaryVariable("$arr", collectionType, true);
    mv.visitJumpInsn(IFNULL, breakLabel);

    // $len = array.length
    mv.visitVarInsn(ALOAD, array);
    mv.visitInsn(ARRAYLENGTH);
    operandStack.push(ClassHelper.int_TYPE);
    int arrayLen = compileStack.defineTemporaryVariable("$len", ClassHelper.int_TYPE, true);

    // $idx = 0
    mv.visitInsn(ICONST_0);
    operandStack.push(ClassHelper.int_TYPE);
    int loopIdx = compileStack.defineTemporaryVariable("$idx", ClassHelper.int_TYPE, true);

    mv.visitLabel(continueLabel);
    // $idx<$len?
    mv.visitVarInsn(ILOAD, loopIdx);
    mv.visitVarInsn(ILOAD, arrayLen);
    mv.visitJumpInsn(IF_ICMPGE, breakLabel);

    // get array element
    loadFromArray(mv, variable, array, loopIdx);

    // $idx++
    mv.visitIincInsn(loopIdx, 1);

    // loop body
    loop.getLoopBlock().visit(acg);

    mv.visitJumpInsn(GOTO, continueLabel);

    mv.visitLabel(breakLabel);

    compileStack.removeVar(loopIdx);
    compileStack.removeVar(arrayLen);
    compileStack.removeVar(array);
}
 
Example 10
Source Project: JReFrameworker   File: IincInsnNode.java    License: MIT License 4 votes vote down vote up
@Override
public void accept(final MethodVisitor methodVisitor) {
  methodVisitor.visitIincInsn(var, incr);
  acceptAnnotations(methodVisitor);
}
 
Example 11
Source Project: JReFrameworker   File: IincInsnNode.java    License: MIT License 4 votes vote down vote up
@Override
public void accept(final MethodVisitor methodVisitor) {
  methodVisitor.visitIincInsn(var, incr);
  acceptAnnotations(methodVisitor);
}
 
Example 12
Source Project: byte-buddy   File: MethodVariableAccess.java    License: Apache License 2.0 4 votes vote down vote up
/**
 * {@inheritDoc}
 */
public Size apply(MethodVisitor methodVisitor, Implementation.Context implementationContext) {
    methodVisitor.visitIincInsn(offset, value);
    return new Size(0, 0);
}