Package org.aspectj.apache.bcel.generic
Class InstructionSelect
java.lang.Object
org.aspectj.apache.bcel.generic.Instruction
org.aspectj.apache.bcel.generic.InstructionBranch
org.aspectj.apache.bcel.generic.InstructionSelect
- All Implemented Interfaces:
Serializable,Cloneable,Constants,InstructionTargeter
- Direct Known Subclasses:
LOOKUPSWITCH,TABLESWITCH
Select - Abstract super class for LOOKUPSWITCH and TABLESWITCH instructions.
- Version:
- $Id: InstructionSelect.java,v 1.4 2009/10/05 17:35:36 aclement Exp $
- Author:
- M. Dahm
- See Also:
LOOKUPSWITCH,TABLESWITCH,InstructionList, Serialized Form
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Field Summary
FieldsModifier and TypeFieldDescriptionprotected intprotected int[]protected shortprotected int[]protected intprotected intprotected InstructionHandle[]Fields inherited from class org.aspectj.apache.bcel.generic.InstructionBranch
positionOfThisInstruction, targetIndex, targetInstructionFields inherited from class org.aspectj.apache.bcel.generic.Instruction
opcodeFields inherited from interface org.aspectj.apache.bcel.Constants
_unused, AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MODULE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ACCESS_NAMES, ACONST_NULL, ALOAD, ALOAD_0, ALOAD_1, ALOAD_2, ALOAD_3, ANEWARRAY, ANEWARRAY_QUICK, ARETURN, ARRAYLENGTH, ASTORE, ASTORE_0, ASTORE_1, ASTORE_2, ASTORE_3, ATHROW, ATTR_ANNOTATION_DEFAULT, ATTR_BOOTSTRAPMETHODS, ATTR_CODE, ATTR_CONSTANT_VALUE, ATTR_DEPRECATED, ATTR_ENCLOSING_METHOD, ATTR_EXCEPTIONS, ATTR_INNER_CLASSES, ATTR_LINE_NUMBER_TABLE, ATTR_LOCAL_VARIABLE_TABLE, ATTR_LOCAL_VARIABLE_TYPE_TABLE, ATTR_METHOD_PARAMETERS, ATTR_MODULE, ATTR_MODULE_MAIN_CLASS, ATTR_MODULE_PACKAGES, ATTR_NEST_HOST, ATTR_NEST_MEMBERS, ATTR_PMG, ATTR_RUNTIME_INVISIBLE_ANNOTATIONS, ATTR_RUNTIME_INVISIBLE_PARAMETER_ANNOTATIONS, ATTR_RUNTIME_INVISIBLE_TYPE_ANNOTATIONS, ATTR_RUNTIME_VISIBLE_ANNOTATIONS, ATTR_RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS, ATTR_RUNTIME_VISIBLE_TYPE_ANNOTATIONS, ATTR_SIGNATURE, ATTR_SOURCE_FILE, ATTR_STACK_MAP, ATTR_SYNTHETIC, ATTR_UNKNOWN, ATTRIBUTE_NAMES, BALOAD, BASTORE, BIPUSH, BRANCH_INSTRUCTION, BREAKPOINT, CALOAD, CASTORE, CHECKCAST, CHECKCAST_QUICK, CLASS_TYPE_NAMES, CONSTANT_Class, CONSTANT_Double, CONSTANT_Dynamic, CONSTANT_Fieldref, CONSTANT_Float, CONSTANT_INST, CONSTANT_Integer, CONSTANT_InterfaceMethodref, CONSTANT_InvokeDynamic, CONSTANT_Long, CONSTANT_MethodHandle, CONSTANT_Methodref, CONSTANT_MethodType, CONSTANT_Module, CONSTANT_NameAndType, CONSTANT_NAMES, CONSTANT_Package, CONSTANT_String, CONSTANT_Utf8, CONSTRUCTOR_NAME, CONSUME_STACK, CP_INST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DLOAD_0, DLOAD_1, DLOAD_2, DLOAD_3, DMUL, DNEG, DREM, DRETURN, DSTORE, DSTORE_0, DSTORE_1, DSTORE_2, DSTORE_3, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, EXCEPTION_THROWER, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAD_0, FLOAD_1, FLOAD_2, FLOAD_3, FMUL, FNEG, FREM, FRETURN, FSTORE, FSTORE_0, FSTORE_1, FSTORE_2, FSTORE_3, FSUB, GETFIELD, GETFIELD_QUICK, GETFIELD_QUICK_W, GETFIELD2_QUICK, GETSTATIC, GETSTATIC_QUICK, GETSTATIC2_QUICK, GOTO, GOTO_W, 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, IF_INST, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, iLen, ILLEGAL_OPCODE, ILLEGAL_TYPE, ILOAD, ILOAD_0, ILOAD_1, ILOAD_2, ILOAD_3, IMPDEP1, IMPDEP2, IMUL, INDEXED, INEG, INSTANCEOF, INSTANCEOF_QUICK, instExcs, instFlags, INT2BYTE, INT2CHAR, INT2SHORT, INTERFACES_IMPLEMENTED_BY_ARRAYS, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKEINTERFACE_QUICK, INVOKENONVIRTUAL, INVOKENONVIRTUAL_QUICK, INVOKESPECIAL, INVOKESTATIC, INVOKESTATIC_QUICK, INVOKESUPER_QUICK, INVOKEVIRTUAL, INVOKEVIRTUAL_QUICK, INVOKEVIRTUAL_QUICK_W, INVOKEVIRTUALOBJECT_QUICK, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISTORE_0, ISTORE_1, ISTORE_2, ISTORE_3, ISUB, ITEM_Bogus, ITEM_Double, ITEM_Float, ITEM_InitObject, ITEM_Integer, ITEM_Long, ITEM_NAMES, ITEM_NewObject, ITEM_Null, ITEM_Object, IUSHR, IXOR, JSR, JSR_INSTRUCTION, JSR_W, KNOWN_ATTRIBUTES, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDC_QUICK, LDC_W, LDC_W_QUICK, LDC2_W, LDC2_W_QUICK, LDIV, LLOAD, LLOAD_0, LLOAD_1, LLOAD_2, LLOAD_3, LMUL, LNEG, LOAD_INST, LOADCLASS_INST, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSTORE_0, LSTORE_1, LSTORE_2, LSTORE_3, LSUB, LUSHR, LV_INST, LXOR, MAJOR, MAJOR_1_1, MAJOR_1_2, MAJOR_1_3, MAJOR_1_4, MAJOR_1_5, MAJOR_1_6, MAJOR_1_7, MAJOR_1_8, MAJOR_1_9, MAJOR_10, MAJOR_11, MAJOR_12, MAJOR_13, MAJOR_14, MAJOR_15, MAJOR_16, MAX_ACC_FLAG, MAX_BYTE, MAX_CODE_SIZE, MAX_CP_ENTRIES, MAX_SHORT, MINOR, MINOR_1_1, MINOR_1_2, MINOR_1_3, MINOR_1_4, MINOR_1_5, MINOR_1_6, MINOR_1_7, MINOR_1_8, MINOR_1_9, MINOR_10, MINOR_11, MINOR_12, MINOR_13, MINOR_14, MINOR_15, MINOR_16, MODULE_ACC_MANDATED, MODULE_ACC_STATIC_PHASE, MODULE_ACC_SYNTHETIC, MODULE_ACC_TRANSITIVE, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, MULTIANEWARRAY_QUICK, NEGATABLE, NEW, NEW_QUICK, NEWARRAY, NOP, OPCODE_NAMES, POP, POP_INST, POP2, PREVIEW_MINOR_VERSION, PUSH, PUSH_INST, PUTFIELD, PUTFIELD_QUICK, PUTFIELD_QUICK_W, PUTFIELD2_QUICK, PUTSTATIC, PUTSTATIC_QUICK, PUTSTATIC2_QUICK, RESERVED, RET, RET_INST, RETURN, SALOAD, SASTORE, SHORT_TYPE_NAMES, SIPUSH, STACK_INST, stackEntriesProduced, STATIC_INITIALIZER_NAME, STORE_INST, SWAP, SWITCH, T_ADDRESS, T_ARRAY, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_OBJECT, T_REFERENCE, T_SHORT, T_UNKNOWN, T_VOID, TABLESWITCH, TARGETER_INSTRUCTION, TYPE_NAMES, TYPE_OF_OPERANDS, types, UNDEFINED, UNDEFINED_LENGTH, UNPREDICTABLE, VARIABLE_LENGTH, WIDE -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionbooleanvoiddump(DataOutputStream out)Dump instruction as byte code to stream out.booleanOnly equal if they are the same branch instruction - otherwise too risky as the targets may only temporarily be pointing at the same destination.int[]intint[]protected intgetTargetOffset(InstructionHandle target)inthashCode()voidsetTarget(int i, InstructionHandle target)Set branch target for `i'th casetoString(boolean verbose)Long output format:protected intupdatePosition(int offset, int max_offset)Since this is a variable length instruction, it may shift the following instructions which then need to update their position.voidupdateTarget(InstructionHandle old_ih, InstructionHandle new_ih)Update the target destination for this instruction.Methods inherited from class org.aspectj.apache.bcel.generic.InstructionBranch
getIndex, getTarget, getTargetOffset, getType, isIfInstruction, physicalSuccessor, setTargetMethods inherited from class org.aspectj.apache.bcel.generic.Instruction
consumeStack, copy, getLoadClassType, getName, getOpcode, getType, getValue, getValue, isALOAD, isArrayCreationInstruction, isASTORE, isConstantInstruction, isConstantPoolInstruction, isIndexedInstruction, isJsrInstruction, isLoadInstruction, isLocalVariableInstruction, isReturnInstruction, isStackConsumer, isStackProducer, isStoreInstruction, produceStack, readInstruction, setIndex, toString
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Field Details
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match
protected int[] match -
indices
protected int[] indices -
targets
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fixedLength
protected int fixedLength -
matchLength
protected int matchLength -
padding
protected int padding -
length
protected short length
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Constructor Details
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InstructionSelect
- Throws:
IOException
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Method Details
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getTargetOffset
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updatePosition
protected int updatePosition(int offset, int max_offset)Since this is a variable length instruction, it may shift the following instructions which then need to update their position. Called by InstructionList.setPositions when setting the position for every instruction. In the presence of variable length instructions `setPositions' performs multiple passes over the instruction list to calculate the correct (byte) positions and offsets by calling this function.- Overrides:
updatePositionin classInstructionBranch- Parameters:
offset- additional offset caused by preceding (variable length) instructionsmax_offset- the maximum offset that may be caused by these instructions- Returns:
- additional offset caused by possible change of this instruction's length
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dump
Dump instruction as byte code to stream out.- Overrides:
dumpin classInstructionBranch- Parameters:
out- Output stream- Throws:
IOException
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toString
Description copied from class:InstructionBranchLong output format:- Overrides:
toStringin classInstructionBranch- Parameters:
verbose- long/short format switch- Returns:
- mnemonic for instruction
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setTarget
Set branch target for `i'th case -
updateTarget
Description copied from class:InstructionBranchUpdate the target destination for this instruction. If an oldHandle is provided it is checked to verify that is where the target currently points to before changing it.- Specified by:
updateTargetin interfaceInstructionTargeter- Overrides:
updateTargetin classInstructionBranch- Parameters:
old_ih- old targetnew_ih- new target
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containsTarget
- Specified by:
containsTargetin interfaceInstructionTargeter- Overrides:
containsTargetin classInstructionBranch- Returns:
- true, if ih is target of this instruction
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getMatchs
public int[] getMatchs()- Returns:
- array of match indices
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getIndices
public int[] getIndices()- Returns:
- array of match target offsets
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equals
Description copied from class:InstructionBranchOnly equal if they are the same branch instruction - otherwise too risky as the targets may only temporarily be pointing at the same destination.- Overrides:
equalsin classInstructionBranch
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hashCode
public int hashCode()- Overrides:
hashCodein classInstructionBranch
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getTargets
- Returns:
- array of match targets
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getLength
public int getLength()- Overrides:
getLengthin classInstruction
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