Package org.jacoco.core.internal.instr

Class MethodInstrumenter

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private IProbeInserter probeInserter  

      • Fields inherited from class org.objectweb.asm.MethodVisitor

        api, mv

    • Constructor Summary

      Constructors 
      Constructor Description
      MethodInstrumenter​(org.objectweb.asm.MethodVisitor mv, IProbeInserter probeInserter)
      Create a new instrumenter instance for the given method.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      private org.objectweb.asm.Label createIntermediate​(org.objectweb.asm.Label label)  
      private org.objectweb.asm.Label[] createIntermediates​(org.objectweb.asm.Label[] labels)  
      private int getInverted​(int opcode)  
      private void insertIntermediateProbe​(org.objectweb.asm.Label label, IFrame frame)  
      private void insertIntermediateProbes​(org.objectweb.asm.Label dflt, org.objectweb.asm.Label[] labels, IFrame frame)  
      void visitInsnWithProbe​(int opcode, int probeId)
      Visits a zero operand instruction with a probe.
      void visitJumpInsnWithProbe​(int opcode, org.objectweb.asm.Label label, int probeId, IFrame frame)
      Visits a jump instruction.
      void visitLookupSwitchInsnWithProbes​(org.objectweb.asm.Label dflt, int[] keys, org.objectweb.asm.Label[] labels, IFrame frame)
      Visits a LOOKUPSWITCH instruction with optional probes for each target label.
      void visitProbe​(int probeId)
      Visits an unconditional probe that should be inserted at the current position.
      void visitTableSwitchInsnWithProbes​(int min, int max, org.objectweb.asm.Label dflt, org.objectweb.asm.Label[] labels, IFrame frame)
      Visits a TABLESWITCH instruction with optional probes for each target label.

      • Methods inherited from class org.objectweb.asm.MethodVisitor

        getDelegate, visitAnnotableParameterCount, visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitEnd, visitFieldInsn, visitFrame, visitIincInsn, visitInsn, visitInsnAnnotation, visitIntInsn, visitInvokeDynamicInsn, visitJumpInsn, visitLabel, visitLdcInsn, visitLineNumber, visitLocalVariable, visitLocalVariableAnnotation, visitLookupSwitchInsn, visitMaxs, visitMethodInsn, visitMethodInsn, visitMultiANewArrayInsn, visitParameter, visitParameterAnnotation, visitTableSwitchInsn, visitTryCatchAnnotation, visitTryCatchBlock, visitTypeAnnotation, visitTypeInsn, visitVarInsn

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • MethodInstrumenter

        public MethodInstrumenter​(org.objectweb.asm.MethodVisitor mv,
                          IProbeInserter probeInserter)
        Create a new instrumenter instance for the given method.
        Parameters:
        mv - next method visitor in the chain
        probeInserter - call-back to insert probes where required

    • Method Detail

      • visitProbe

        public void visitProbe​(int probeId)
        Description copied from class: MethodProbesVisitor
        Visits an unconditional probe that should be inserted at the current position.
        Overrides:
        visitProbe in class MethodProbesVisitor
        Parameters:
        probeId - id of the probe to insert

      • visitInsnWithProbe

        public void visitInsnWithProbe​(int opcode,
                               int probeId)
        Description copied from class: MethodProbesVisitor
        Visits a zero operand instruction with a probe. This event is used only for instructions that terminate the method. Therefore the probe must be inserted before the actual instruction.
        Overrides:
        visitInsnWithProbe in class MethodProbesVisitor
        Parameters:
        opcode - the opcode of the instruction to be visited. This opcode is either IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN or ATHROW.
        probeId - id of the probe
        See Also:
        MethodVisitor.visitInsn(int)

      • visitJumpInsnWithProbe

        public void visitJumpInsnWithProbe​(int opcode,
                                   org.objectweb.asm.Label label,
                                   int probeId,
                                   IFrame frame)
        Description copied from class: MethodProbesVisitor
        Visits a jump instruction. A probe with the given id should be inserted in a way that it is executed only when the jump to the given label is executed.
        Overrides:
        visitJumpInsnWithProbe in class MethodProbesVisitor
        Parameters:
        opcode - the opcode of the type instruction to be visited. This opcode is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, IFNULL or IFNONNULL.
        label - the operand of the instruction to be visited. This operand is a label that designates the instruction to which the jump instruction may jump.
        probeId - id of the probe
        frame - stackmap frame status after the execution of the jump instruction. The instance is only valid with the call of this method.
        See Also:
        MethodVisitor.visitJumpInsn(int, Label)

      • getInverted

        private int getInverted​(int opcode)

      • visitTableSwitchInsnWithProbes

        public void visitTableSwitchInsnWithProbes​(int min,
                                           int max,
                                           org.objectweb.asm.Label dflt,
                                           org.objectweb.asm.Label[] labels,
                                           IFrame frame)
        Description copied from class: MethodProbesVisitor
        Visits a TABLESWITCH instruction with optional probes for each target label. Implementations can be optimized based on the fact that the same target labels will always have the same probe id within a call to this method. The probe id for each label can be obtained with LabelInfo.getProbeId(Label).
        Overrides:
        visitTableSwitchInsnWithProbes in class MethodProbesVisitor
        Parameters:
        min - the minimum key value.
        max - the maximum key value.
        dflt - beginning of the default handler block.
        labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the min + i key.
        frame - stackmap frame status after the execution of the switch instruction. The instance is only valid with the call of this method.
        See Also:
        MethodVisitor.visitTableSwitchInsn(int, int, Label, Label[])

      • visitLookupSwitchInsnWithProbes

        public void visitLookupSwitchInsnWithProbes​(org.objectweb.asm.Label dflt,
                                            int[] keys,
                                            org.objectweb.asm.Label[] labels,
                                            IFrame frame)
        Description copied from class: MethodProbesVisitor
        Visits a LOOKUPSWITCH instruction with optional probes for each target label. Implementations can be optimized based on the fact that the same target labels will always have the same probe id within a call to this method. The probe id for each label can be obtained with LabelInfo.getProbeId(Label).
        Overrides:
        visitLookupSwitchInsnWithProbes in class MethodProbesVisitor
        Parameters:
        dflt - beginning of the default handler block.
        keys - the values of the keys.
        labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the keys[i] key.
        frame - stackmap frame status after the execution of the switch instruction. The instance is only valid with the call of this method.
        See Also:
        MethodVisitor.visitLookupSwitchInsn(Label, int[], Label[])

      • createIntermediates

        private org.objectweb.asm.Label[] createIntermediates​(org.objectweb.asm.Label[] labels)

      • createIntermediate

        private org.objectweb.asm.Label createIntermediate​(org.objectweb.asm.Label label)

      • insertIntermediateProbe

        private void insertIntermediateProbe​(org.objectweb.asm.Label label,
                                     IFrame frame)

      • insertIntermediateProbes

        private void insertIntermediateProbes​(org.objectweb.asm.Label dflt,
                                      org.objectweb.asm.Label[] labels,
                                      IFrame frame)