Class MethodSanitizer

java.lang.Object
org.objectweb.asm.MethodVisitor
org.objectweb.asm.tree.MethodNode
org.objectweb.asm.commons.JSRInlinerAdapter
org.jacoco.core.internal.flow.MethodSanitizer
All Implemented Interfaces:
org.objectweb.asm.Opcodes
class MethodSanitizer extends org.objectweb.asm.commons.JSRInlinerAdapter
This method visitor fixes two potential issues with Java byte code:
  • Remove JSR/RET instructions by inlining subroutines which are deprecated since Java 6. The RET statement complicates control flow analysis as the jump target is not explicitly given.
  • Remove code attributes line number and local variable name if they point to invalid offsets which some tools create. When writing out such invalid labels with ASM class files do not verify any more.

  • Field Summary

    Fields inherited from class org.objectweb.asm.tree.MethodNode

    access, annotationDefault, attrs, desc, exceptions, instructions, invisibleAnnotableParameterCount, invisibleAnnotations, invisibleLocalVariableAnnotations, invisibleParameterAnnotations, invisibleTypeAnnotations, localVariables, maxLocals, maxStack, name, parameters, signature, tryCatchBlocks, visibleAnnotableParameterCount, visibleAnnotations, visibleLocalVariableAnnotations, visibleParameterAnnotations, visibleTypeAnnotations

    Fields inherited from class org.objectweb.asm.MethodVisitor

    api, mv

    Fields inherited from interface org.objectweb.asm.Opcodes

    AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_MODULE, ACC_NATIVE, ACC_OPEN, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_RECORD, ACC_STATIC, ACC_STATIC_PHASE, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_TRANSITIVE, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM10_EXPERIMENTAL, ASM4, ASM5, ASM6, ASM7, ASM8, ASM9, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SOURCE_DEPRECATED, SOURCE_MASK, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V_PREVIEW, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19, V20, V21, V22, V23, V24, V25, V26, V9

  • Constructor Summary

    Constructors
    Constructor
    Description
    MethodSanitizer(org.objectweb.asm.MethodVisitor mv, int access, String name, String desc, String signature, String[] exceptions)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    visitLineNumber(int line, org.objectweb.asm.Label start)
     
    void
    visitLocalVariable(String name, String desc, String signature, org.objectweb.asm.Label start, org.objectweb.asm.Label end, int index)
     

    Methods inherited from class org.objectweb.asm.commons.JSRInlinerAdapter

    visitEnd, visitJumpInsn

    Methods inherited from class org.objectweb.asm.tree.MethodNode

    accept, accept, check, getLabelNode, visitAnnotableParameterCount, visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitFieldInsn, visitFrame, visitIincInsn, visitInsn, visitInsnAnnotation, visitIntInsn, visitInvokeDynamicInsn, visitLabel, visitLdcInsn, visitLocalVariableAnnotation, visitLookupSwitchInsn, visitMaxs, visitMethodInsn, visitMultiANewArrayInsn, visitParameter, visitParameterAnnotation, visitTableSwitchInsn, visitTryCatchAnnotation, visitTryCatchBlock, visitTypeAnnotation, visitTypeInsn, visitVarInsn

    Methods inherited from class org.objectweb.asm.MethodVisitor

    getDelegate, visitMethodInsn

    Methods inherited from class Object

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

  • Constructor Details

    • MethodSanitizer

      MethodSanitizer(org.objectweb.asm.MethodVisitor mv, int access, String name, String desc, String signature, String[] exceptions)

  • Method Details

    • visitLocalVariable

      public void visitLocalVariable(String name, String desc, String signature, org.objectweb.asm.Label start, org.objectweb.asm.Label end, int index)
      Overrides:
      visitLocalVariable in class org.objectweb.asm.tree.MethodNode

    • visitLineNumber

      public void visitLineNumber(int line, org.objectweb.asm.Label start)
      Overrides:
      visitLineNumber in class org.objectweb.asm.tree.MethodNode