Example usage for org.objectweb.asm Opcodes RETURN

List of usage examples for org.objectweb.asm Opcodes RETURN

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int RETURN

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Usage

From source file:org.jacoco.core.internal.analysis.AC_MethodAnalyzerTest.java

License:Open Source License

private void createLinearSequence() {
    final Label l0 = new Label();
    method.visitLabel(l0);/*from   w  w w .j a v  a  2s . c o m*/
    method.visitLineNumber(1001, l0);
    method.visitInsn(Opcodes.NOP);
    final Label l1 = new Label();
    method.visitLabel(l1);
    method.visitLineNumber(1002, l1);
    method.visitInsn(Opcodes.RETURN);
}

From source file:org.jacoco.core.internal.analysis.AC_MethodAnalyzerTest.java

License:Open Source License

private void createIfBranchMerge() {
    final Label l0 = new Label();
    method.visitLabel(l0);// ww  w  . ja  v a 2s  . c o m
    method.visitLineNumber(1001, l0);
    method.visitVarInsn(Opcodes.ILOAD, 1);
    Label l1 = new Label();
    method.visitJumpInsn(Opcodes.IFEQ, l1);
    final Label l2 = new Label();
    method.visitLabel(l2);
    method.visitLineNumber(1002, l2);
    method.visitInsn(Opcodes.NOP);
    method.visitLabel(l1);
    method.visitLineNumber(1003, l1);
    method.visitInsn(Opcodes.RETURN);
}

From source file:org.jacoco.core.internal.analysis.AC_MethodAnalyzerTest.java

License:Open Source License

private void createJumpBackwards() {
    final Label l0 = new Label();
    method.visitLabel(l0);//  w  ww. jav a2 s  . c  o m
    method.visitLineNumber(1001, l0);
    final Label l1 = new Label();
    method.visitJumpInsn(Opcodes.GOTO, l1);
    final Label l2 = new Label();
    method.visitLabel(l2);
    method.visitLineNumber(1002, l2);
    method.visitInsn(Opcodes.RETURN);
    method.visitLabel(l1);
    method.visitLineNumber(1003, l1);
    method.visitJumpInsn(Opcodes.GOTO, l2);
}

From source file:org.jacoco.core.internal.analysis.AC_MethodAnalyzerTest.java

License:Open Source License

private void createLoop() {
    final Label l0 = new Label();
    method.visitLabel(l0);/*from   ww  w .  j  a  v  a 2 s. c  o  m*/
    method.visitLineNumber(1001, l0);
    method.visitInsn(Opcodes.ICONST_0);
    method.visitVarInsn(Opcodes.ISTORE, 1);
    final Label l1 = new Label();
    method.visitLabel(l1);
    method.visitLineNumber(1002, l1);
    method.visitVarInsn(Opcodes.ILOAD, 1);
    method.visitInsn(Opcodes.ICONST_5);
    final Label l2 = new Label();
    method.visitJumpInsn(Opcodes.IF_ICMPGE, l2);
    method.visitIincInsn(1, 1);
    method.visitJumpInsn(Opcodes.GOTO, l1);
    method.visitLabel(l2);
    method.visitLineNumber(1003, l2);
    method.visitInsn(Opcodes.RETURN);
}

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

License:Open Source License

@Test
public void should_filter() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, Opcodes.ACC_PRIVATE, "<init>",
            "(Ljava/lang/String;I)V", null, null);
    m.visitVarInsn(Opcodes.ALOAD, 0);//from   w ww. j a  va2 s . c  o  m
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitVarInsn(Opcodes.ILOAD, 2);
    m.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Enum", "<init>", "(Ljava/lang/String;I)V", false);
    m.visitInsn(Opcodes.RETURN);
    context.superClassName = "java/lang/Enum";

    filter.filter(m, context, output);

    assertIgnored(new Range(m.instructions.getFirst(), m.instructions.getLast()));
}

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

License:Open Source License

/**
 * <code><pre>/*from   ww w . j  a va  2 s  .  c o m*/
 * enum E {
 *   ;
 *   private E() {
 *     ...
 *   }
 * }
 * </pre></code>
 */
@Test
public void should_not_filter_non_empty_constructor() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, Opcodes.ACC_PRIVATE, "<init>",
            "(Ljava/lang/String;I)V", null, null);
    m.visitVarInsn(Opcodes.ALOAD, 0);
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitVarInsn(Opcodes.ILOAD, 2);
    m.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Enum", "<init>", "(Ljava/lang/String;I)V", false);
    m.visitInsn(Opcodes.NOP);
    m.visitInsn(Opcodes.RETURN);
    context.superClassName = "java/lang/Enum";

    filter.filter(m, context, output);

    assertIgnored();
}

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

License:Open Source License

/**
 * <code><pre>//from w  ww.  j  a  v  a  2  s  . c o m
 * enum E {
 *   ;
 *   private E(long p) {
 *   }
 * }
 * </pre></code>
 */
@Test
public void should_not_filter_constructor_with_additional_parameters() {
    final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, Opcodes.ACC_PRIVATE, "<init>",
            "(Ljava/lang/String;IJ)V", null, null);
    m.visitVarInsn(Opcodes.ALOAD, 0);
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitVarInsn(Opcodes.ILOAD, 2);
    m.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Enum", "<init>", "(Ljava/lang/String;I)V", false);
    m.visitInsn(Opcodes.RETURN);
    context.superClassName = "java/lang/Enum";

    filter.filter(m, context, output);

    assertIgnored();
}

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

License:Open Source License

private static void filter(final IFilterOutput output, final List<TryCatchBlockNode> tryCatchBlocks,
        final TryCatchBlockNode catchAnyBlock) {
    final AbstractInsnNode e = next(catchAnyBlock.handler);
    final int size = size(e);
    if (size <= 0) {
        return;//from   w w  w.ja  v  a  2  s  . c  o m
    }

    // Determine instructions inside regions
    final Set<AbstractInsnNode> inside = new HashSet<AbstractInsnNode>();
    for (final TryCatchBlockNode t : tryCatchBlocks) {
        if (t.handler == catchAnyBlock.handler) {
            AbstractInsnNode i = t.start;
            while (i != t.end) {
                inside.add(i);
                i = i.getNext();
            }
        }
    }

    // Find and merge duplicates at exits of regions
    for (final TryCatchBlockNode t : tryCatchBlocks) {
        if (t.handler == catchAnyBlock.handler) {
            boolean continues = false;
            AbstractInsnNode i = t.start;

            while (i != t.end) {
                switch (i.getType()) {
                case AbstractInsnNode.FRAME:
                case AbstractInsnNode.LINE:
                case AbstractInsnNode.LABEL:
                    break;
                case AbstractInsnNode.JUMP_INSN:
                    final AbstractInsnNode jumpTarget = next(((JumpInsnNode) i).label);
                    if (!inside.contains(jumpTarget)) {
                        merge(output, size, e, jumpTarget);
                    }
                    continues = i.getOpcode() != Opcodes.GOTO;
                    break;
                default:
                    switch (i.getOpcode()) {
                    case Opcodes.IRETURN:
                    case Opcodes.LRETURN:
                    case Opcodes.FRETURN:
                    case Opcodes.DRETURN:
                    case Opcodes.ARETURN:
                    case Opcodes.RETURN:
                    case Opcodes.ATHROW:
                        continues = false;
                        break;
                    default:
                        continues = true;
                        break;
                    }
                    break;
                }
                i = i.getNext();
            }

            i = next(i);
            if (continues && !inside.contains(i)) {
                merge(output, size, e, i);
            }
        }

        if (t != catchAnyBlock && t.start == catchAnyBlock.start && t.end == catchAnyBlock.end) {
            final AbstractInsnNode i = next(next(t.handler));
            if (!inside.contains(i)) {
                // javac's empty catch - merge after ASTORE
                merge(output, size, e, i);
            }
        }
    }
}

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

License:Open Source License

/**
 * <pre>//  ww  w  .j  av  a 2  s. c o  m
 *   try {
 *     ...
 *     if (...) {
 *       ...
 *       return;
 *     } else {
 *       ...
 *       return;
 *     }
 *   } finally {
 *     ...
 *   }
 * </pre>
 */
@Test
public void should_analyze_control_flow() {
    final Label start1 = new Label();
    final Label end1 = new Label();
    final Label start2 = new Label();
    final Label end2 = new Label();
    final Label finallyStart = new Label();

    m.visitTryCatchBlock(start1, end1, finallyStart, null);
    m.visitTryCatchBlock(start2, end2, finallyStart, null);

    m.visitLabel(start1);
    // jump to another region associated with same handler:
    m.visitJumpInsn(Opcodes.IFEQ, start2);
    m.visitInsn(Opcodes.NOP);
    m.visitLabel(end1);

    m.visitInsn(Opcodes.NOP); // finally block
    shouldMergeLast();
    m.visitInsn(Opcodes.RETURN);

    m.visitLabel(start2);
    m.visitInsn(Opcodes.NOP);
    m.visitLabel(end2);
    m.visitInsn(Opcodes.NOP); // finally block
    shouldMergeLast();
    m.visitInsn(Opcodes.RETURN);

    m.visitLabel(finallyStart);
    m.visitVarInsn(Opcodes.ASTORE, 1);
    shouldIgnoreLast();
    m.visitInsn(Opcodes.NOP); // finally block
    shouldMergeLast();
    m.visitVarInsn(Opcodes.ALOAD, 1);
    shouldIgnoreLast();
    m.visitInsn(Opcodes.ATHROW);
    shouldIgnoreLast();

    execute();
}

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

License:Open Source License

@Test
public void javac_always_completes_abruptly() {
    final Label tryStart = new Label();
    final Label tryEnd = new Label();
    final Label finallyStart = new Label();

    m.visitTryCatchBlock(tryStart, tryEnd, finallyStart, null);

    m.visitLabel(tryStart);/* w  w w .j a v  a  2s  .c  om*/
    m.visitInsn(Opcodes.NOP); // try body
    m.visitLabel(tryEnd);
    m.visitInsn(Opcodes.RETURN); // finally body

    m.visitLabel(finallyStart);
    m.visitVarInsn(Opcodes.ASTORE, 1);
    m.visitInsn(Opcodes.RETURN); // finally body

    execute();
}