Example usage for org.objectweb.asm.tree MethodNode MethodNode

Introduction

In this page you can find the example usage for org.objectweb.asm.tree MethodNode MethodNode.

Prototype

public MethodNode(final int api, final int access, final String name, final String descriptor,
        final String signature, final String[] exceptions) 

Source Link

Document

Constructs a new MethodNode .

Usage

From source file:org.jacoco.core.internal.analysis.filter.KotlinCoroutineFilterTest.java

License:Open Source License

/**
 * <pre>/*from  w  w  w  .ja  v  a 2 s.  c om*/
 *     suspend fun example() {
 *         suspendingFunction()
 *         nop()
 *     }
 * </pre>
 */
@Test
public void should_filter_suspending_functions() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, Opcodes.ACC_STATIC, "example",
            "(Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", null, null);
    context.classAnnotations.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);

    final int continuationArgumentIndex = 0;
    final int continuationIndex = 2;

    m.visitVarInsn(Opcodes.ALOAD, continuationArgumentIndex);
    final Range range1 = new Range();
    range1.fromInclusive = m.instructions.getLast();
    m.visitTypeInsn(Opcodes.INSTANCEOF, "ExampleKt$example$1");
    final Label createStateInstance = new Label();
    m.visitJumpInsn(Opcodes.IFEQ, createStateInstance);

    m.visitVarInsn(Opcodes.ALOAD, continuationArgumentIndex);
    m.visitTypeInsn(Opcodes.CHECKCAST, "ExampleKt$example$1");
    m.visitVarInsn(Opcodes.ASTORE, continuationIndex);

    m.visitVarInsn(Opcodes.ALOAD, continuationIndex);
    m.visitFieldInsn(Opcodes.GETFIELD, "ExampleKt$example$1", "label", "I");

    m.visitLdcInsn(Integer.valueOf(Integer.MIN_VALUE));
    m.visitInsn(Opcodes.IAND);
    m.visitJumpInsn(Opcodes.IFEQ, createStateInstance);

    m.visitVarInsn(Opcodes.ALOAD, continuationIndex);
    m.visitInsn(Opcodes.DUP);
    m.visitFieldInsn(Opcodes.GETFIELD, "ExampleKt$example$1", "label", "I");

    m.visitLdcInsn(Integer.valueOf(Integer.MIN_VALUE));
    m.visitInsn(Opcodes.ISUB);
    m.visitFieldInsn(Opcodes.PUTFIELD, "ExampleKt$example$1", "label", "I");

    final Label afterCoroutineStateCreated = new Label();
    m.visitJumpInsn(Opcodes.GOTO, afterCoroutineStateCreated);

    m.visitLabel(createStateInstance);

    m.visitTypeInsn(Opcodes.NEW, "ExampleKt$example$1");
    m.visitInsn(Opcodes.DUP);
    m.visitVarInsn(Opcodes.ALOAD, continuationArgumentIndex);
    m.visitMethodInsn(Opcodes.INVOKESPECIAL, "ExampleKt$example$1", "<init>",
            "(Lkotlin/coroutines/Continuation;)V", false);

    m.visitVarInsn(Opcodes.ASTORE, continuationIndex);

    m.visitLabel(afterCoroutineStateCreated);

    m.visitVarInsn(Opcodes.ALOAD, continuationIndex);
    m.visitFieldInsn(Opcodes.GETFIELD, "ExampleKt$example$1", "result", "Ljava/lang/Object;");
    m.visitVarInsn(Opcodes.ASTORE, 1);

    m.visitMethodInsn(Opcodes.INVOKESTATIC, "kotlin/coroutines/intrinsics/IntrinsicsKt",
            "getCOROUTINE_SUSPENDED", "()Ljava/lang/Object;", false);

    // line of "fun"
    m.visitVarInsn(Opcodes.ASTORE, 3);

    m.visitVarInsn(Opcodes.ALOAD, continuationIndex);
    m.visitFieldInsn(Opcodes.GETFIELD, "ExampleKt$example$1", "label", "I");
    final Label dflt = new Label();
    final Label state0 = new Label();
    final Label state1 = new Label();
    m.visitTableSwitchInsn(0, 1, dflt, state0, state1);

    m.visitLabel(state0);

    {
        m.visitVarInsn(Opcodes.ALOAD, 1);
        m.visitInsn(Opcodes.DUP);
        m.visitTypeInsn(Opcodes.INSTANCEOF, "kotlin/Result$Failure");
        Label label = new Label();
        m.visitJumpInsn(Opcodes.IFEQ, label);
        m.visitTypeInsn(Opcodes.CHECKCAST, "kotlin/Result$Failure");
        m.visitFieldInsn(Opcodes.GETFIELD, "kotlin/Result$Failure", "exception", "Ljava/lang/Throwable");
        m.visitInsn(Opcodes.ATHROW);
        m.visitInsn(Opcodes.POP);
        range1.toInclusive = m.instructions.getLast();
        m.visitLabel(label);
    }

    // line of "suspendingFunction"
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "", "suspendingFunction",
            "(Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", false);

    m.visitInsn(Opcodes.DUP);
    final Range range2 = new Range();
    range2.fromInclusive = m.instructions.getLast();
    m.visitVarInsn(Opcodes.ALOAD, 3);
    final Label continuationLabelAfterLoadedResult = new Label();
    m.visitJumpInsn(Opcodes.IF_ACMPNE, continuationLabelAfterLoadedResult);
    // line of "fun"
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitInsn(Opcodes.ARETURN);

    m.visitLabel(state1);

    {
        m.visitVarInsn(Opcodes.ALOAD, 1);
        m.visitInsn(Opcodes.DUP);
        m.visitTypeInsn(Opcodes.INSTANCEOF, "kotlin/Result$Failure");
        final Label label = new Label();
        m.visitJumpInsn(Opcodes.IFEQ, label);
        m.visitTypeInsn(Opcodes.CHECKCAST, "kotlin/Result$Failure");
        m.visitFieldInsn(Opcodes.GETFIELD, "kotlin/Result$Failure", "exception", "Ljava/lang/Throwable");
        m.visitInsn(Opcodes.ATHROW);
        m.visitInsn(Opcodes.POP);
        m.visitLabel(label);
    }
    m.visitVarInsn(Opcodes.ALOAD, 1);
    range2.toInclusive = m.instructions.getLast();
    m.visitLabel(continuationLabelAfterLoadedResult);

    // line after "suspendingFunction"
    m.visitInsn(Opcodes.NOP);
    m.visitInsn(Opcodes.ARETURN);

    m.visitLabel(dflt);
    final Range range0 = new Range();
    range0.fromInclusive = m.instructions.getLast();
    m.visitTypeInsn(Opcodes.NEW, "java/lang/IllegalStateException");
    m.visitInsn(Opcodes.DUP);
    m.visitLdcInsn("call to 'resume' before 'invoke' with coroutine");
    m.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/IllegalStateException", "<init>",
            "(Ljava/lang/String;)V", false);
    m.visitInsn(Opcodes.ATHROW);
    range0.toInclusive = m.instructions.getLast();

    filter.filter(m, context, output);

    assertIgnored(range0, range1, range2);
}

---

From source file:org.jacoco.core.internal.analysis.filter.KotlinDefaultArgumentsFilterTest.java

License:Open Source License

private static MethodNode createMethod(final int access, final String name, final String descriptor) {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, access, name, descriptor, null, null);

    m.visitVarInsn(Opcodes.ILOAD, 2);//from   w w  w. j  ava2 s. c o  m
    m.visitInsn(Opcodes.ICONST_1);
    m.visitInsn(Opcodes.IAND);
    final Label label = new Label();
    m.visitJumpInsn(Opcodes.IFEQ, label);
    // default argument
    m.visitLdcInsn(Integer.valueOf(42));
    m.visitVarInsn(Opcodes.ISTORE, 1);
    m.visitLabel(label);

    m.visitVarInsn(Opcodes.ALOAD, 0);
    m.visitVarInsn(Opcodes.ILOAD, 1);
    m.visitMethodInsn(Opcodes.INVOKESPECIAL, "Target", "origin", "(I)V", false);
    m.visitInsn(Opcodes.RETURN);

    return m;
}

---

From source file:org.jacoco.core.internal.analysis.filter.KotlinDefaultArgumentsFilterTest.java

License:Open Source License

/**
 * <pre>/*from  w  ww  .  j  a  v  a2 s .co  m*/
 * open class Open {
 *     open fun foo(a: Int = 42) {
 *     }
 * }
 * </pre>
 */
@Test
public void should_filter_open_functions() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, Opcodes.ACC_SYNTHETIC, "foo$default",
            "(LOpen;IILjava/lang/Object;)V", null, null);
    context.classAnnotations.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
    {
        m.visitVarInsn(Opcodes.ALOAD, 3);
        final Label label = new Label();
        m.visitJumpInsn(Opcodes.IFNULL, label);
        m.visitTypeInsn(Opcodes.NEW, "java/lang/UnsupportedOperationException");
        m.visitInsn(Opcodes.DUP);
        m.visitLdcInsn("Super calls with default arguments not supported in this target, function: foo");
        m.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/UnsupportedOperationException", "<init>",
                "(Ljava/lang/String;)V", false);
        m.visitInsn(Opcodes.ATHROW);
        m.visitLabel(label);
    }
    {
        m.visitVarInsn(Opcodes.ILOAD, 2);
        m.visitInsn(Opcodes.ICONST_1);
        m.visitInsn(Opcodes.IAND);
        final Label label = new Label();
        m.visitJumpInsn(Opcodes.IFEQ, label);
        // default argument
        m.visitLdcInsn(Integer.valueOf(42));
        m.visitVarInsn(Opcodes.ISTORE, 1);
        m.visitLabel(label);

        m.visitVarInsn(Opcodes.ALOAD, 0);
        m.visitVarInsn(Opcodes.ILOAD, 1);
        m.visitMethodInsn(Opcodes.INVOKESPECIAL, "Open", "foo", "(I)V", false);
        m.visitInsn(Opcodes.RETURN);
    }

    filter.filter(m, context, output);

    assertIgnored(new Range(m.instructions.getFirst(), m.instructions.get(6)),
            new Range(m.instructions.get(11), m.instructions.get(11)));
}

---

From source file:org.jacoco.core.internal.analysis.filter.KotlinDefaultArgumentsFilterTest.java

License:Open Source License

/**
 * <pre>//from  w  w  w . jav a  2  s  . c  o  m
 * class C(a: Int = 42)
 * </pre>
 */
@Test
public void should_filter_constructors() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, Opcodes.ACC_SYNTHETIC, "<init>",
            "(IILkotlin/jvm/internal/DefaultConstructorMarker;)V", null, null);
    context.classAnnotations.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);

    m.visitVarInsn(Opcodes.ILOAD, 2);
    m.visitInsn(Opcodes.ICONST_1);
    m.visitInsn(Opcodes.IAND);
    Label label = new Label();
    m.visitJumpInsn(Opcodes.IFEQ, label);
    // default argument
    m.visitLdcInsn(Integer.valueOf(42));
    m.visitVarInsn(Opcodes.ISTORE, 1);
    m.visitLabel(label);
    m.visitVarInsn(Opcodes.ALOAD, 0);
    m.visitVarInsn(Opcodes.ILOAD, 1);
    m.visitMethodInsn(Opcodes.INVOKESPECIAL, "Owner", "<init>", "(I)V", false);
    m.visitInsn(Opcodes.RETURN);

    filter.filter(m, context, output);

    assertIgnored(new Range(m.instructions.get(3), m.instructions.get(3)));
}

---

From source file:org.jacoco.core.internal.analysis.filter.KotlinDefaultArgumentsFilterTest.java

License:Open Source License

/**
 * <pre>//from  ww  w  .j av  a2  s.c  o  m
 * data class C(val x: Long = 42)
 * </pre>
 */
@Test
public void should_filter_methods_with_parameters_that_consume_two_slots() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, Opcodes.ACC_SYNTHETIC, "<init>",
            "(JILkotlin/jvm/internal/DefaultConstructorMarker;)V", null, null);
    context.classAnnotations.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);

    m.visitVarInsn(Opcodes.ILOAD, 3);
    m.visitInsn(Opcodes.ICONST_1);
    m.visitInsn(Opcodes.IAND);
    final Label label = new Label();
    m.visitJumpInsn(Opcodes.IFEQ, label);
    // default argument
    m.visitLdcInsn(Integer.valueOf(42));
    m.visitVarInsn(Opcodes.ISTORE, 1);
    m.visitLabel(label);
    m.visitVarInsn(Opcodes.ALOAD, 0);
    m.visitVarInsn(Opcodes.ILOAD, 1);
    m.visitMethodInsn(Opcodes.INVOKESPECIAL, "Owner", "<init>", "(J)V", false);
    m.visitInsn(Opcodes.RETURN);

    filter.filter(m, context, output);

    assertIgnored(new Range(m.instructions.get(3), m.instructions.get(3)));
}

---

From source file:org.jacoco.core.internal.analysis.filter.KotlinGeneratedFilterTest.java

License:Open Source License

@Test
public void testNoLinesForKotlinWithDebug() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0, "hashCode", "()I", null, null);
    m.visitInsn(Opcodes.ICONST_0);//from   w ww .j a va 2s . c  o m
    m.visitInsn(Opcodes.IRETURN);
    context.classAnnotations.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);

    filter.filter(m, context, output);

    assertMethodIgnored(m);
}

---

From source file:org.jacoco.core.internal.analysis.filter.KotlinGeneratedFilterTest.java

License:Open Source License

@Test
public void testWithLinesForKotlinWithDebug() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0, "hashCode", "()I", null, null);
    m.visitAnnotation("Lother/Annotation;", false);
    m.visitLineNumber(12, new Label());
    m.visitInsn(Opcodes.ICONST_0);/*  w ww.j a va 2 s .  c om*/
    m.visitInsn(Opcodes.IRETURN);
    context.classAnnotations.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);

    filter.filter(m, context, output);

    assertIgnored();
}

---

From source file:org.jacoco.core.internal.analysis.filter.KotlinGeneratedFilterTest.java

License:Open Source License

@Test
public void testNoLinesNonKotlinWithDebug() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0, "hashCode", "()I", null, null);
    m.visitInsn(Opcodes.ICONST_0);/*from  www.  j a va2s.c o  m*/
    m.visitInsn(Opcodes.IRETURN);

    filter.filter(m, context, output);

    assertIgnored();
}

---

From source file:org.jacoco.core.internal.analysis.filter.KotlinGeneratedFilterTest.java

License:Open Source License

@Test
public void testNoLinesForKotlinNoDebug() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0, "hashCode", "()I", null, null);
    m.visitInsn(Opcodes.ICONST_0);//from   w w  w  . j a va2s.  c o  m
    m.visitInsn(Opcodes.IRETURN);
    context.classAnnotations.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
    context.sourceFileName = null;

    filter.filter(m, context, output);

    assertIgnored();
}

---

From source file:org.jacoco.core.internal.analysis.filter.KotlinGeneratedFilterTest.java

License:Open Source License

@Test
public void testWithLinesForKotlinNoDebug() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0, "hashCode", "()I", null, null);
    m.visitInsn(Opcodes.ICONST_0);/*from w  w w  . j a  v  a  2s. co  m*/
    m.visitInsn(Opcodes.IRETURN);
    m.visitLineNumber(12, new Label());
    context.classAnnotations.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
    context.sourceFileName = null;

    filter.filter(m, context, output);

    assertIgnored();
}

---

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