Example usage for org.objectweb.asm MethodVisitor visitIntInsn

Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitIntInsn.

Prototype

public void visitIntInsn(final int opcode, final int operand) 

Source Link

Document

Visits an instruction with a single int operand.

Usage

From source file:org.spongepowered.test.decompile.TernaryTests.java

License:Open Source License

@Test
public void testSimple() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(ZI)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);/*w ww  . java  2s . c om*/
    Label end = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    mv.visitIntInsn(ILOAD, 0);
    mv.visitJumpInsn(IFEQ, l1);
    mv.visitIntInsn(BIPUSH, 6);
    mv.visitJumpInsn(GOTO, l2);
    mv.visitLabel(l1);
    mv.visitInsn(ICONST_3);
    mv.visitLabel(l2);
    mv.visitIntInsn(ISTORE, 1);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("a", "Z", null, start, end, 0);
    mv.visitLocalVariable("i", "I", null, start, end, 1);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "i = a ? 6 : 3;";
    Assert.assertEquals(good, insn);
}

---

From source file:org.spongepowered.test.decompile.TernaryTests.java

License:Open Source License

@Test
public void testToField() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(ZI)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);/*from w  w w  .  jav a 2 s.com*/
    Label end = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    mv.visitIntInsn(ILOAD, 0);
    mv.visitJumpInsn(IFEQ, l1);
    mv.visitIntInsn(BIPUSH, 6);
    mv.visitJumpInsn(GOTO, l2);
    mv.visitLabel(l1);
    mv.visitInsn(ICONST_3);
    mv.visitLabel(l2);
    mv.visitFieldInsn(PUTSTATIC, THIS_TYPE.getInternalName(), "afield", "I");
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("a", "Z", null, start, end, 0);
    mv.visitLocalVariable("i", "I", null, start, end, 1);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "org.spongepowered.test.decompile.TernaryTests.afield = a ? 6 : 3;";
    Assert.assertEquals(good, insn);
}

---

From source file:org.spongepowered.test.decompile.TernaryTests.java

License:Open Source License

@Test
public void testNested() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(ZIZ)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);/*www. j  a  va 2 s .c  om*/
    Label end = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    Label l3 = new Label();
    mv.visitIntInsn(ILOAD, 0);
    mv.visitJumpInsn(IFEQ, l1);
    mv.visitIntInsn(ILOAD, 2);
    mv.visitJumpInsn(IFEQ, l3);
    mv.visitInsn(ICONST_4);
    mv.visitJumpInsn(GOTO, l2);
    mv.visitLabel(l3);
    mv.visitInsn(ICONST_5);
    mv.visitJumpInsn(GOTO, l2);
    mv.visitLabel(l1);
    mv.visitInsn(ICONST_3);
    mv.visitLabel(l2);
    mv.visitIntInsn(ISTORE, 1);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("a", "Z", null, start, end, 0);
    mv.visitLocalVariable("i", "I", null, start, end, 1);
    mv.visitLocalVariable("b", "Z", null, start, end, 2);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "i = a ? b ? 4 : 5 : 3;";
    Assert.assertEquals(good, insn);
}

---

From source file:org.spongepowered.test.decompile.TernaryTests.java

License:Open Source License

@Test
public void testNested2() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(ZIZ)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);//  w ww . ja v  a2 s.  c  om
    Label end = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    Label l3 = new Label();
    mv.visitIntInsn(ILOAD, 0);
    mv.visitJumpInsn(IFEQ, l1);
    mv.visitInsn(ICONST_3);
    mv.visitJumpInsn(GOTO, l2);
    mv.visitLabel(l1);
    mv.visitIntInsn(ILOAD, 2);
    mv.visitJumpInsn(IFEQ, l3);
    mv.visitInsn(ICONST_4);
    mv.visitJumpInsn(GOTO, l2);
    mv.visitLabel(l3);
    mv.visitInsn(ICONST_5);
    mv.visitLabel(l2);
    mv.visitIntInsn(ISTORE, 1);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("a", "Z", null, start, end, 0);
    mv.visitLocalVariable("i", "I", null, start, end, 1);
    mv.visitLocalVariable("b", "Z", null, start, end, 2);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "i = a ? 3 : b ? 4 : 5;";
    Assert.assertEquals(good, insn);
}

---

From source file:org.spongepowered.test.decompile.TernaryTests.java

License:Open Source License

@Test
public void testReturned() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(ZI)I");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);/*from  w w  w.j  ava 2  s  . c o  m*/
    Label end = new Label();
    Label l1 = new Label();
    mv.visitIntInsn(ILOAD, 0);
    mv.visitJumpInsn(IFEQ, l1);
    mv.visitIntInsn(BIPUSH, 6);
    mv.visitJumpInsn(GOTO, end);
    mv.visitLabel(l1);
    mv.visitInsn(ICONST_3);
    mv.visitLabel(end);
    mv.visitInsn(IRETURN);
    mv.visitLocalVariable("a", "Z", null, start, end, 0);
    mv.visitLocalVariable("i", "I", null, start, end, 1);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "return a ? 6 : 3;";
    Assert.assertEquals(good, insn);
}

---

From source file:org.spongepowered.test.decompile.TryCatchTests.java

License:Open Source License

@Test
public void testTryCatchReturnedTernary() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(Z)I");
    MethodVisitor mv = builder.getGenerator();
    Label l0 = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception");
    mv.visitLabel(l0);/* www .  jav a2  s.c  o m*/
    mv.visitVarInsn(ILOAD, 1);
    Label l3 = new Label();
    mv.visitJumpInsn(IFEQ, l3);
    mv.visitIntInsn(BIPUSH, 6);
    mv.visitJumpInsn(GOTO, l1);
    mv.visitLabel(l3);
    mv.visitInsn(ICONST_3);
    mv.visitLabel(l1);
    mv.visitInsn(IRETURN);
    mv.visitLabel(l2);
    mv.visitVarInsn(ASTORE, 2);
    Label l4 = new Label();
    mv.visitLabel(l4);
    mv.visitInsn(ICONST_0);
    mv.visitInsn(IRETURN);
    Label l5 = new Label();
    mv.visitLabel(l5);
    mv.visitLocalVariable("a", "Z", null, l0, l5, 1);
    mv.visitLocalVariable("e", "Ljava/lang/Exception;", null, l4, l5, 2);

    String insn = TestHelper.getAsString(builder.finish(), "test_mth");
    String good = "try {\n" + "    return a ? 6 : 3;\n" + "} catch (Exception e) {\n" + "    return 0;\n" + "}";
    Assert.assertEquals(good, insn);
}

---

From source file:org.spongepowered.test.kotlin.OperatorTests.java

License:Open Source License

@Test
public void testIntConstant() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(I)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);//from   ww w  .j a va  2 s.  c  om
    Label end = new Label();
    mv.visitIntInsn(BIPUSH, 65);
    mv.visitIntInsn(ISTORE, 0);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("i", "I", null, start, end, 0);

    String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth");
    String good = "fun test_mth(i: Int) {\n" + "    i = 65\n" + "}";
    Assert.assertEquals(good, insn);
}

---

From source file:org.spongepowered.test.kotlin.OperatorTests.java

License:Open Source License

@Test
public void testNegative() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(II)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);// ww w .ja va  2  s.co  m
    Label end = new Label();
    mv.visitIntInsn(ILOAD, 1);
    mv.visitInsn(INEG);
    mv.visitIntInsn(ISTORE, 0);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("i", "I", null, start, end, 0);
    mv.visitLocalVariable("a", "I", null, start, end, 1);

    String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth");
    String good = "fun test_mth(i: Int, a: Int) {\n" + "    i = -a\n" + "}";
    Assert.assertEquals(good, insn);
}

---

From source file:org.spongepowered.test.kotlin.OperatorTests.java

License:Open Source License

@Test
public void testAdd() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);//from  w  w w  .j  a v a 2  s . co m
    Label end = new Label();
    mv.visitIntInsn(ILOAD, 1);
    mv.visitIntInsn(ILOAD, 2);
    mv.visitInsn(IADD);
    mv.visitIntInsn(ISTORE, 0);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("i", "I", null, start, end, 0);
    mv.visitLocalVariable("a", "I", null, start, end, 1);
    mv.visitLocalVariable("b", "I", null, start, end, 2);

    String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth");
    String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + "    i = a + b\n" + "}";
    Assert.assertEquals(good, insn);
}

---

From source file:org.spongepowered.test.kotlin.OperatorTests.java

License:Open Source License

@Test
public void testSub() {
    TestMethodBuilder builder = new TestMethodBuilder("test_mth", "(III)V");
    MethodVisitor mv = builder.getGenerator();
    Label start = new Label();
    mv.visitLabel(start);/*from w ww  .  j a  v a  2 s . c o m*/
    Label end = new Label();
    mv.visitIntInsn(ILOAD, 1);
    mv.visitIntInsn(ILOAD, 2);
    mv.visitInsn(ISUB);
    mv.visitIntInsn(ISTORE, 0);
    mv.visitLabel(end);
    mv.visitInsn(RETURN);
    mv.visitLocalVariable("i", "I", null, start, end, 0);
    mv.visitLocalVariable("a", "I", null, start, end, 1);
    mv.visitLocalVariable("b", "I", null, start, end, 2);

    String insn = KotlinTestHelper.getMethodAsString(builder.finish(), "test_mth");
    String good = "fun test_mth(i: Int, a: Int, b: Int) {\n" + "    i = a - b\n" + "}";
    Assert.assertEquals(good, insn);
}

---

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