Example usage for org.objectweb.asm Opcodes NOP

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

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In this page you can find the example usage for org.objectweb.asm Opcodes NOP.

Prototype

int NOP

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Usage

From source file:org.jacoco.core.internal.analysis.filter.TryWithResourcesJavac11FilterTest.java

License:Open Source License

/**
 * <pre>//from   ww  w  . j a  v a 2s. c om
 *   try (r = new ...) {
 *     ...
 *   }
 * </pre>
 */
@Test
public void without_null_check() {
    final Range range1 = new Range();
    final Range range2 = new Range();

    final Label e = new Label();
    final Label t = new Label();

    final Label handler = new Label();
    m.visitTryCatchBlock(handler, handler, handler, "java/lang/Throwable");

    m.visitInsn(Opcodes.NOP);

    m.visitVarInsn(Opcodes.ALOAD, 0);
    range1.fromInclusive = m.instructions.getLast();
    m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Resource", "close", "()V", false);
    m.visitJumpInsn(Opcodes.GOTO, e);
    range1.toInclusive = m.instructions.getLast();

    m.visitLabel(handler);
    range2.fromInclusive = m.instructions.getLast();
    m.visitVarInsn(Opcodes.ASTORE, 1);
    m.visitVarInsn(Opcodes.ALOAD, 0);
    m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Resource", "close", "()V", false);
    m.visitJumpInsn(Opcodes.GOTO, t);

    m.visitVarInsn(Opcodes.ASTORE, 2);
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitVarInsn(Opcodes.ALOAD, 2);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable", "addSuppressed", "(Ljava/lang/Throwable;)V",
            false);
    m.visitLabel(t);
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitInsn(Opcodes.ATHROW);
    range2.toInclusive = m.instructions.getLast();

    m.visitLabel(e);

    filter.filter(m, context, output);

    assertIgnored(range1, range2);
}

From source file:org.jacoco.core.internal.analysis.filter.TryWithResourcesJavac11FilterTest.java

License:Open Source License

/**
 * <pre>/*www  . j  av  a 2 s  . c o m*/
 *   try (r = open()) {
 *     ...
 *   }
 * </pre>
 */
@Test
public void with_null_check() {
    final Range range1 = new Range();
    final Range range2 = new Range();

    final Label e = new Label();
    final Label t = new Label();

    final Label handler = new Label();
    m.visitTryCatchBlock(handler, handler, handler, "java/lang/Throwable");

    m.visitInsn(Opcodes.NOP);

    m.visitVarInsn(Opcodes.ALOAD, 0);
    range1.fromInclusive = m.instructions.getLast();
    m.visitJumpInsn(Opcodes.IFNULL, e);
    m.visitVarInsn(Opcodes.ALOAD, 0);
    m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Resource", "close", "()V", false);
    m.visitJumpInsn(Opcodes.GOTO, e);
    range1.toInclusive = m.instructions.getLast();

    m.visitLabel(handler);
    range2.fromInclusive = m.instructions.getLast();
    m.visitVarInsn(Opcodes.ASTORE, 1);
    m.visitVarInsn(Opcodes.ALOAD, 0);
    m.visitJumpInsn(Opcodes.IFNULL, t);
    m.visitVarInsn(Opcodes.ALOAD, 0);
    m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Resource", "close", "()V", false);
    m.visitJumpInsn(Opcodes.GOTO, t);

    m.visitVarInsn(Opcodes.ASTORE, 2);
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitVarInsn(Opcodes.ALOAD, 2);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable", "addSuppressed", "(Ljava/lang/Throwable;)V",
            false);
    m.visitLabel(t);
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitInsn(Opcodes.ATHROW);
    range2.toInclusive = m.instructions.getLast();

    m.visitLabel(e);

    filter.filter(m, context, output);

    assertIgnored(range1, range2);
}

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

License:Open Source License

/**
 * javac 9 for//www .j av a  2s  .  c o  m
 *
 * <pre>
 *     try (r0 = open(...); r1 = new ...) {
 *         return ...
 *     } finally {
 *         ...
 *     }
 * </pre>
 *
 * generates
 *
 * <pre>
 *     ...
 *     ASTORE r0
 *     ACONST_NULL
 *     ASTORE primaryExc0
 *
 *     ...
 *     ASTORE r1
 *     ACONST_NULL
 *     ASTORE primaryExc1
 *
 *     ... // body
 *
 *     ALOAD primaryExc1
 *     ALOAD r1
 *     INVOKESTATIC $closeResource:(Ljava/lang/Throwable;Ljava/lang/AutoCloseable;)V
 *
 *     ALOAD r0
 *     IFNULL n
 *     ALOAD primaryExc0
 *     ALOAD r0
 *     INVOKESTATIC $closeResource:(Ljava/lang/Throwable;Ljava/lang/AutoCloseable;)V
 *     n:
 *
 *     ... // finally on normal path
 *     ARETURN
 *
 *     ASTORE t
 *     ALOAD t
 *     ASTORE primaryExc1
 *     ALOAD t
 *     ATHROW
 *
 *     ASTORE t
 *     ALOAD primaryExc1
 *     ALOAD r1
 *     INVOKESTATIC  $closeResource:(Ljava/lang/Throwable;Ljava/lang/AutoCloseable;)V
 *     ALOAD t
 *     ATHROW
 *
 *     ASTORE t
 *     ALOAD t
 *     ASTORE primaryExc0
 *     ALOAD t
 *     ATHROW
 *
 *     ASTORE t
 *     ALOAD r0
 *     IFNULL n
 *     ALOAD primaryExc0
 *     ALOAD r0
 *     INVOKESTATIC  $closeResource:(Ljava/lang/Throwable;Ljava/lang/AutoCloseable;)V
 *     n:
 *     ALOAD t
 *     ATHROW
 *
 *     ... // additional handlers for catch blocks and finally on exceptional path
 * </pre>
 */
@Test
public void javac9() {
    final Range range0 = new Range();
    final Range range1 = new Range();
    final Range range2 = new Range();
    final Range range3 = new Range();

    final Label handler1 = new Label();
    m.visitTryCatchBlock(handler1, handler1, handler1, "java/lang/Throwable");

    final Label handler2 = new Label();
    m.visitTryCatchBlock(handler2, handler2, handler2, "java/lang/Throwable");

    // r0 = open(...)
    m.visitVarInsn(Opcodes.ASTORE, 1);

    // primaryExc0 = null
    m.visitInsn(Opcodes.ACONST_NULL);
    m.visitVarInsn(Opcodes.ASTORE, 2);

    // r1 = new ..
    m.visitVarInsn(Opcodes.ASTORE, 3);

    // primaryExc1 = null
    m.visitInsn(Opcodes.ACONST_NULL);
    m.visitVarInsn(Opcodes.ASTORE, 4);

    // body
    m.visitInsn(Opcodes.NOP);
    m.visitInsn(Opcodes.ACONST_NULL);
    m.visitVarInsn(Opcodes.ASTORE, 5);

    // $closeResource(primaryExc1, r1)
    m.visitVarInsn(Opcodes.ALOAD, 4);
    range0.fromInclusive = m.instructions.getLast();
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitMethodInsn(Opcodes.INVOKESTATIC, "Fun", "$closeResource",
            "(Ljava/lang/Throwable;Ljava/lang/AutoCloseable;)V", false);
    range0.toInclusive = m.instructions.getLast();

    // if (r0 != null)
    m.visitVarInsn(Opcodes.ALOAD, 1);
    range2.fromInclusive = m.instructions.getLast();
    final Label l11 = new Label();
    m.visitJumpInsn(Opcodes.IFNULL, l11);
    // $closeResource(primaryExc0, r0)
    m.visitVarInsn(Opcodes.ALOAD, 2);
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitMethodInsn(Opcodes.INVOKESTATIC, "Fun", "$closeResource",
            "(Ljava/lang/Throwable;Ljava/lang/AutoCloseable;)V", false);
    range2.toInclusive = m.instructions.getLast();
    m.visitLabel(l11);

    // finally
    m.visitInsn(Opcodes.NOP);
    m.visitVarInsn(Opcodes.ALOAD, 5);
    m.visitInsn(Opcodes.ARETURN);

    // catch (Throwable t)
    m.visitLabel(handler1);
    range1.fromInclusive = m.instructions.getLast();
    m.visitVarInsn(Opcodes.ASTORE, 5);
    // primaryExc1 = t
    m.visitVarInsn(Opcodes.ALOAD, 5);
    m.visitVarInsn(Opcodes.ASTORE, 4);
    // throw t
    m.visitVarInsn(Opcodes.ALOAD, 5);
    m.visitInsn(Opcodes.ATHROW);

    // catch (any t)
    m.visitVarInsn(Opcodes.ASTORE, 6);
    // $closeResource(primaryExc1, r1)
    m.visitVarInsn(Opcodes.ALOAD, 4);
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitMethodInsn(Opcodes.INVOKESTATIC, "Fun", "$closeResource",
            "(Ljava/lang/Throwable;Ljava/lang/AutoCloseable;)V", false);
    m.visitVarInsn(Opcodes.ALOAD, 6);
    m.visitInsn(Opcodes.ATHROW);
    range1.toInclusive = m.instructions.getLast();

    // catch (Throwable t)
    m.visitLabel(handler2);
    range3.fromInclusive = m.instructions.getLast();
    m.visitVarInsn(Opcodes.ASTORE, 3);
    // primaryExc0 = t
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitVarInsn(Opcodes.ASTORE, 2);
    // throw t
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitInsn(Opcodes.ATHROW);

    // catch (any t)
    m.visitVarInsn(Opcodes.ASTORE, 7);
    // if (r0 != null)
    m.visitVarInsn(Opcodes.ALOAD, 1);
    final Label l14 = new Label();
    m.visitJumpInsn(Opcodes.IFNULL, l14);
    // $closeResource(primaryExc0, r0)
    m.visitVarInsn(Opcodes.ALOAD, 2);
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitMethodInsn(Opcodes.INVOKESTATIC, "Fun", "$closeResource",
            "(Ljava/lang/Throwable;Ljava/lang/AutoCloseable;)V", false);
    m.visitLabel(l14);
    // throw t
    m.visitVarInsn(Opcodes.ALOAD, 7);
    m.visitInsn(Opcodes.ATHROW);
    range3.toInclusive = m.instructions.getLast();

    m.visitVarInsn(Opcodes.ASTORE, 8);
    // finally
    m.visitInsn(Opcodes.NOP);
    m.visitVarInsn(Opcodes.ALOAD, 8);
    m.visitInsn(Opcodes.ATHROW);

    filter.filter(m, context, output);

    assertIgnored(range0, range1, range2, range3);
}

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

License:Open Source License

/**
 * javac 7 and 8 for/*  w  w w. jav a 2s. c om*/
 *
 * <pre>
 *     try (r0 = ...; r1 = ...) {
 *         return ...
 *     } finally {
 *         ...
 *     }
 * </pre>
 *
 * generate
 *
 * <pre>
 *     ...
 *     ASTORE r0
 *     ACONST_NULL
 *     ASTORE primaryExc0
 *
 *     ...
 *     ASTORE r1
 *     ACONST_NULL
 *     ASTORE primaryExc1
 *
 *     ... // body
 *
 *     ALOAD r1
 *     IFNULL n
 *     ALOAD primaryExc1
 *     IFNULL c
 *     ALOAD r1
 *     INVOKEINTERFACE close:()V
 *     GOTO n
 *     ASTORE t
 *     ALOAD primaryExc1
 *     ALOAD t
 *     INVOKEVIRTUAL java/lang/Throwable.addSuppressed:(Ljava/lang/Throwable;)V
 *     GOTO n
 *     c:
 *     ALOAD r1
 *     INVOKEINTERFACE close:()V
 *     n:
 *
 *     ALOAD r0
 *     IFNULL n
 *     ALOAD primaryExc0
 *     IFNULL c
 *     ALOAD r0
 *     INVOKEVIRTUAL close:()V
 *     GOTO n
 *     ASTORE t
 *     ALOAD primaryExc0
 *     ALOAD t
 *     INVOKEVIRTUAL java/lang/Throwable.addSuppressed:(Ljava/lang/Throwable;)V
 *     GOTO n
 *     c:
 *     ALOAD r0
 *     INVOKEVIRTUAL close:()V
 *     n:
 *
 *     ... // finally on normal path
 *     ARETURN
 *
 *     ASTORE t
 *     ALOAD t
 *     ASTORE primaryExc1
 *     ALOAD t
 *     ATHROW
 *
 *     ASTORE t1
 *     ALOAD r1
 *     IFNULL e
 *     ALOAD primaryExc1
 *     IFNULL c
 *     ALOAD r1
 *     INVOKEINTERFACE close:()V
 *     GOTO e
 *     ASTORE t2
 *     ALOAD primaryExc1
 *     ALOAD t2
 *     INVOKEVIRTUAL java/lang/Throwable.addSuppressed:(Ljava/lang/Throwable;)V
 *     GOTO e
 *     c:
 *     ALOAD r1
 *     INVOKEINTERFACE close:()V
 *     e:
 *     ALOAD t1
 *     ATHROW
 *
 *     ASTORE t
 *     ALOAD t
 *     ASTORE primaryExc0
 *     ALOAD t
 *     ATHROW
 *
 *     ASTORE t1
 *     ALOAD r0
 *     IFNULL e
 *     ALOAD primaryExc0
 *     IFNULL c
 *     ALOAD r0
 *     INVOKEVIRTUAL close:()V
 *     GOTO e
 *     ASTORE t2
 *     ALOAD primaryExc0
 *     ALOAD t2
 *     INVOKEVIRTUAL java/lang/Throwable.addSuppressed:(Ljava/lang/Throwable;)V
 *     GOTO e
 *     c:
 *     ALOAD r0
 *     INVOKEVIRTUAL close:()V
 *     e:
 *     ALOAD t1
 *     ATHROW
 *
 *     ... // additional handlers for catch blocks and finally on exceptional path
 * </pre>
 */
@Test
public void javac_7_8() {
    final Range range0 = new Range();
    final Range range1 = new Range();
    final Range range2 = new Range();
    final Range range3 = new Range();

    final Label handler1 = new Label();
    m.visitTryCatchBlock(handler1, handler1, handler1, "java/lang/Throwable");
    final Label handler2 = new Label();
    m.visitTryCatchBlock(handler2, handler2, handler2, "java/lang/Throwable");

    // r1 = ...
    m.visitVarInsn(Opcodes.ASTORE, 1);

    // primaryExc1 = null
    m.visitInsn(Opcodes.ACONST_NULL);
    m.visitVarInsn(Opcodes.ASTORE, 2);

    // r2 = ...
    m.visitVarInsn(Opcodes.ASTORE, 3);
    // primaryExc2 = null
    m.visitInsn(Opcodes.ACONST_NULL);
    m.visitVarInsn(Opcodes.ASTORE, 4);

    // body
    m.visitInsn(Opcodes.NOP);

    m.visitInsn(Opcodes.ACONST_NULL);
    m.visitVarInsn(Opcodes.ASTORE, 5);

    final Label l15 = new Label();
    // if (r2 != null)
    m.visitVarInsn(Opcodes.ALOAD, 3);
    range0.fromInclusive = m.instructions.getLast();
    m.visitJumpInsn(Opcodes.IFNULL, l15);
    // if (primaryExc2 != null)
    m.visitVarInsn(Opcodes.ALOAD, 4);
    final Label l26 = new Label();
    m.visitJumpInsn(Opcodes.IFNULL, l26);
    // r2.close
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Fun$Resource2", "close", "()V", false);
    m.visitJumpInsn(Opcodes.GOTO, l15);

    m.visitVarInsn(Opcodes.ASTORE, 6);
    m.visitVarInsn(Opcodes.ALOAD, 4);
    m.visitVarInsn(Opcodes.ALOAD, 6);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable", "addSuppressed", "(Ljava/lang/Throwable;)V",
            false);
    m.visitJumpInsn(Opcodes.GOTO, l15);

    m.visitLabel(l26);

    // r2.close
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Fun$Resource2", "close", "()V", false);
    range0.toInclusive = m.instructions.getLast();
    m.visitLabel(l15);

    // if (r1 != null)
    m.visitVarInsn(Opcodes.ALOAD, 1);
    range2.fromInclusive = m.instructions.getLast();
    final Label l23 = new Label();
    m.visitJumpInsn(Opcodes.IFNULL, l23);
    // if (primaryExc1 != null)
    m.visitVarInsn(Opcodes.ALOAD, 2);
    final Label l27 = new Label();
    m.visitJumpInsn(Opcodes.IFNULL, l27);
    // r1.close
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "Fun$Resource1", "close", "()V", false);
    m.visitJumpInsn(Opcodes.GOTO, l23);

    m.visitVarInsn(Opcodes.ASTORE, 6);
    m.visitVarInsn(Opcodes.ALOAD, 2);
    m.visitVarInsn(Opcodes.ALOAD, 6);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable", "addSuppressed", "(Ljava/lang/Throwable;)V",
            false);
    m.visitJumpInsn(Opcodes.GOTO, l23);

    m.visitLabel(l27);
    // r1.close
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "Fun$Resource1", "close", "()V", false);
    range2.toInclusive = m.instructions.getLast();
    m.visitLabel(l23);

    // finally
    m.visitInsn(Opcodes.NOP);
    m.visitInsn(Opcodes.ARETURN);

    // catch (Throwable t)
    m.visitLabel(handler1);
    range1.fromInclusive = m.instructions.getLast();
    m.visitVarInsn(Opcodes.ASTORE, 5);
    // primaryExc2 = t
    m.visitVarInsn(Opcodes.ALOAD, 5);
    m.visitVarInsn(Opcodes.ASTORE, 4);
    // throw t
    m.visitVarInsn(Opcodes.ALOAD, 5);
    m.visitInsn(Opcodes.ATHROW);

    // catch (any t)
    m.visitVarInsn(Opcodes.ASTORE, 7);
    // if (r2 != null)
    m.visitVarInsn(Opcodes.ALOAD, 3);
    final Label l28 = new Label();
    m.visitJumpInsn(Opcodes.IFNULL, l28);
    // if (primaryExc2 != null)
    m.visitVarInsn(Opcodes.ALOAD, 4);
    final Label l29 = new Label();
    m.visitJumpInsn(Opcodes.IFNULL, l29);
    // r2.close
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Fun$Resource2", "close", "()V", false);
    m.visitJumpInsn(Opcodes.GOTO, l28);

    m.visitVarInsn(Opcodes.ASTORE, 8);
    m.visitVarInsn(Opcodes.ALOAD, 4);
    m.visitVarInsn(Opcodes.ALOAD, 8);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable", "addSuppressed", "(Ljava/lang/Throwable;)V",
            false);
    m.visitJumpInsn(Opcodes.GOTO, l28);

    m.visitLabel(l29);
    // r2.close
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Fun$Resource2", "close", "()V", false);
    m.visitLabel(l28);
    // throw t
    m.visitVarInsn(Opcodes.ALOAD, 7);
    m.visitInsn(Opcodes.ATHROW);
    range1.toInclusive = m.instructions.getLast();

    // catch (Throwable t)
    m.visitLabel(handler2);
    range3.fromInclusive = m.instructions.getLast();
    m.visitVarInsn(Opcodes.ASTORE, 3);
    // primaryExc2 = t
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitVarInsn(Opcodes.ASTORE, 2);
    // throw t
    m.visitVarInsn(Opcodes.ALOAD, 3);
    m.visitInsn(Opcodes.ATHROW);

    // catch (any t)
    m.visitVarInsn(Opcodes.ASTORE, 9);
    // if (r1 != null)
    m.visitVarInsn(Opcodes.ALOAD, 1);
    final Label l30 = new Label();
    m.visitJumpInsn(Opcodes.IFNULL, l30);
    // if (primaryExc1 != null)
    m.visitVarInsn(Opcodes.ALOAD, 2);
    final Label l31 = new Label();
    m.visitJumpInsn(Opcodes.IFNULL, l31);
    // r1.close
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "Fun$Resource1", "close", "()V", false);
    m.visitJumpInsn(Opcodes.GOTO, l30);

    m.visitVarInsn(Opcodes.ASTORE, 10);
    m.visitVarInsn(Opcodes.ALOAD, 2);
    m.visitVarInsn(Opcodes.ALOAD, 10);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable", "addSuppressed", "(Ljava/lang/Throwable;)V",
            false);
    m.visitJumpInsn(Opcodes.GOTO, l30);

    m.visitLabel(l31);
    // r1.close
    m.visitVarInsn(Opcodes.ALOAD, 1);
    m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "Fun$Resource1", "close", "()V", false);
    m.visitLabel(l30);
    // throw t
    m.visitVarInsn(Opcodes.ALOAD, 9);
    m.visitInsn(Opcodes.ATHROW);
    range3.toInclusive = m.instructions.getLast();

    m.visitVarInsn(Opcodes.ASTORE, 11);
    // finally
    m.visitInsn(Opcodes.NOP);
    m.visitVarInsn(Opcodes.ALOAD, 11);
    m.visitInsn(Opcodes.ATHROW);

    filter.filter(m, context, output);

    assertIgnored(range0, range1, range2, range3);
}

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

License:Open Source License

/**
 * javac 9 for/*w w  w . j  ava 2s.c  om*/
 *
 * <pre>
 *     try (r = new ...) {
 *         ...
 *     } finally {
 *         ...
 *     }
 * </pre>
 *
 * generates
 *
 * <pre>
 *     ...
 *     ASTORE r
 *     ACONST_NULL
 *     ASTORE primaryExc
 *
 *     ... // body
 *
 *     ALOAD primaryExc
 *     IFNULL c
 *     ALOAD r
 *     INVOKEVIRTUAL close:()V
 *     GOTO f
 *     ASTORE t
 *     ALOAD primaryExc
 *     ALOAD t
 *     NVOKEVIRTUAL java/lang/Throwable.addSuppressed:(Ljava/lang/Throwable;)V
 *     GOTO f
 *     c:
 *     ALOAD r
 *     INVOKEVIRTUAL close:()V
 *     GOTO f
 *
 *     ASTORE t
 *     ALOAD t
 *     ASTORE primaryExc
 *     ALOAD t
 *     ATHROW
 *
 *     ASTORE t
 *     ALOAD primaryExc
 *     IFNULL c
 *     ALOAD r
 *     INVOKEVIRTUAL close:()V
 *     GOTO L78
 *     ASTORE t2
 *     ALOAD primaryExc
 *     ALOAD t2
 *     INVOKEVIRTUAL java/lang/Throwable.addSuppressed:(Ljava/lang/Throwable;)V
 *     goto e
 *     c:
 *     ALOAD r
 *     INVOKEVIRTUAL close:()V
 *     e:
 *     ALOAD t
 *     ATHROW
 *
 *     f:
 *     ... // finally on normal path
 *     ... // additional handlers for catch blocks and finally on exceptional path
 *     ...
 * </pre>
 */
@Test
public void javac9_omitted_null_check() {
    final Range range0 = new Range();
    final Range range1 = new Range();

    final Label handler = new Label();
    m.visitTryCatchBlock(handler, handler, handler, "java/lang/Throwable");

    // primaryExc = null
    m.visitInsn(Opcodes.ACONST_NULL);
    m.visitVarInsn(Opcodes.ASTORE, 1);

    // r = new ...
    m.visitInsn(Opcodes.NOP);

    final Label end = new Label();
    // "finally" on a normal path
    {
        // if (primaryExc != null)
        m.visitVarInsn(Opcodes.ALOAD, 2);
        range0.fromInclusive = m.instructions.getLast();
        final Label closeLabel = new Label();
        m.visitJumpInsn(Opcodes.IFNULL, closeLabel);
        // r.close
        m.visitVarInsn(Opcodes.ALOAD, 1);
        m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "Resource", "close", "()V", false);
        m.visitJumpInsn(Opcodes.GOTO, end);

        // catch (Throwable t)
        m.visitVarInsn(Opcodes.ASTORE, 3);
        // primaryExc.addSuppressed(t)
        m.visitVarInsn(Opcodes.ALOAD, 2);
        m.visitVarInsn(Opcodes.ALOAD, 3);
        m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable", "addSuppressed",
                "(Ljava/lang/Throwable;)V", false);
        m.visitJumpInsn(Opcodes.GOTO, end);

        m.visitLabel(closeLabel);
        // r.close()
        m.visitVarInsn(Opcodes.ALOAD, 1);
        m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "Resource", "close", "()V", false);
    }
    m.visitJumpInsn(Opcodes.GOTO, end);
    range0.toInclusive = m.instructions.getLast();
    // catch (Throwable t)
    m.visitLabel(handler);
    {
        range1.fromInclusive = m.instructions.getLast();
        m.visitVarInsn(Opcodes.ASTORE, 3);
        // primaryExc = t
        m.visitVarInsn(Opcodes.ALOAD, 3);
        m.visitVarInsn(Opcodes.ASTORE, 2);
        // throw t
        m.visitVarInsn(Opcodes.ALOAD, 3);
        m.visitInsn(Opcodes.ATHROW);
    }
    // catch (any t)
    m.visitVarInsn(Opcodes.ASTORE, 4);
    // "finally" on exceptional path
    {
        // if (primaryExc != null)
        m.visitVarInsn(Opcodes.ALOAD, 2);
        final Label closeLabel = new Label();
        m.visitJumpInsn(Opcodes.IFNULL, closeLabel);
        m.visitVarInsn(Opcodes.ALOAD, 1);
        m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "Resource", "close", "()V", false);
        final Label finallyEndLabel = new Label();
        m.visitJumpInsn(Opcodes.GOTO, finallyEndLabel);

        // catch (Throwable t)
        m.visitVarInsn(Opcodes.ASTORE, 5);
        // primaryExc.addSuppressed(t)
        m.visitVarInsn(Opcodes.ALOAD, 2);
        m.visitVarInsn(Opcodes.ALOAD, 5);
        m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable", "addSuppressed",
                "(Ljava/lang/Throwable;)V", false);
        m.visitJumpInsn(Opcodes.GOTO, finallyEndLabel);

        m.visitLabel(closeLabel);
        // r.close()
        m.visitVarInsn(Opcodes.ALOAD, 1);
        m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "Resource", "close", "()V", false);
        m.visitLabel(finallyEndLabel);
    }
    // throw t
    m.visitVarInsn(Opcodes.ALOAD, 4);
    m.visitInsn(Opcodes.ATHROW);
    range1.toInclusive = m.instructions.getLast();

    m.visitLabel(end);

    filter.filter(m, context, output);

    assertIgnored(range0, range1);
}

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

License:Open Source License

@Test
public void current_line_number_should_be_applied_to_instructions() {
    InsnNode i1 = new InsnNode(Opcodes.NOP);
    builder.addInstruction(i1);/* w  ww.jav a 2s . c  o m*/

    builder.setCurrentLine(10);
    InsnNode i2 = new InsnNode(Opcodes.NOP);
    builder.addInstruction(i2);
    InsnNode i3 = new InsnNode(Opcodes.NOP);
    builder.addInstruction(i3);

    builder.setCurrentLine(20);
    InsnNode i4 = new InsnNode(Opcodes.NOP);
    builder.addInstruction(i4);

    Map<AbstractInsnNode, Instruction> map = builder.getInstructions();
    assertEquals(ISourceNode.UNKNOWN_LINE, map.get(i1).getLine());
    assertEquals(10, map.get(i2).getLine());
    assertEquals(10, map.get(i3).getLine());
    assertEquals(20, map.get(i4).getLine());
}

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

License:Open Source License

@Test
public void null_probearray_should_not_mark_instruction_as_covered() {
    builder = new InstructionsBuilder(null);

    InsnNode i1 = new InsnNode(Opcodes.NOP);
    builder.addInstruction(i1);//  w w w. j a v a  2s.c  o  m
    builder.addProbe(5, 0);

    Map<AbstractInsnNode, Instruction> map = builder.getInstructions();
    assertEquals(CounterImpl.COUNTER_1_0, map.get(i1).getInstructionCounter());
}

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

License:Open Source License

@Test
public void unexecuted_probe_should_not_mark_instruction_as_covered() {
    InsnNode i1 = new InsnNode(Opcodes.NOP);
    builder.addInstruction(i1);//w ww .j a va  2s.c o  m
    builder.addProbe(0, 0);

    Map<AbstractInsnNode, Instruction> map = builder.getInstructions();
    assertEquals(CounterImpl.COUNTER_1_0, map.get(i1).getInstructionCounter());
}

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

License:Open Source License

@Test
public void executed_probe_should_mark_instruction_as_covered() {
    InsnNode i1 = new InsnNode(Opcodes.NOP);
    builder.addInstruction(i1);/*  w  w  w  .  j ava  2  s . c  o  m*/
    builder.addProbe(1, 0);

    Map<AbstractInsnNode, Instruction> map = builder.getInstructions();
    assertEquals(CounterImpl.COUNTER_0_1, map.get(i1).getInstructionCounter());
}

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

License:Open Source License

@Test
public void subsequent_instructions_should_be_linked_by_default() {
    InsnNode i1 = new InsnNode(Opcodes.NOP);
    builder.addInstruction(i1);/*from w  ww.  jav a  2  s  .co  m*/

    InsnNode i2 = new InsnNode(Opcodes.NOP);
    builder.addInstruction(i2);

    // mark i2 as covered
    builder.addProbe(1, 0);

    // coverage should be propagated to i1
    Map<AbstractInsnNode, Instruction> map = builder.getInstructions();
    assertEquals(CounterImpl.COUNTER_0_1, map.get(i1).getInstructionCounter());
}