Package com.ibm.wala.shrikeBT
Class ConstantInstruction
- java.lang.Object
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- com.ibm.wala.shrikeBT.Instruction
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- com.ibm.wala.shrikeBT.ConstantInstruction
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- All Implemented Interfaces:
Constants
,IInstruction
,Cloneable
public abstract class ConstantInstruction extends Instruction
A ConstantInstruction pushes some constant value onto the stack.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
ConstantInstruction.ClassToken
static class
ConstantInstruction.InvokeDynamicToken
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Nested classes/interfaces inherited from interface com.ibm.wala.shrikeBT.IInstruction
IInstruction.Visitor
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Field Summary
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Fields inherited from class com.ibm.wala.shrikeBT.Instruction
noInstructions
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Fields inherited from interface com.ibm.wala.shrikeBT.Constants
ACC_ABSTRACT, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_TRANSIENT, ACC_VOLATILE, CONSTANT_Class, CONSTANT_Double, CONSTANT_FieldRef, CONSTANT_Float, CONSTANT_Integer, CONSTANT_InterfaceMethodRef, CONSTANT_InvokeDynamic, CONSTANT_Long, CONSTANT_MethodHandle, CONSTANT_MethodRef, CONSTANT_MethodType, CONSTANT_NameAndType, CONSTANT_String, CONSTANT_Utf8, indexedTypes, indexedTypes_T, MAYBE, NO, OP_aaload, OP_aastore, OP_aconst_null, OP_aload, OP_aload_0, OP_aload_1, OP_aload_2, OP_aload_3, OP_anewarray, OP_areturn, OP_arraylength, OP_astore, OP_astore_0, OP_astore_1, OP_astore_2, OP_astore_3, OP_athrow, OP_baload, OP_bastore, OP_bipush, OP_caload, OP_castore, OP_checkcast, OP_d2f, OP_d2i, OP_d2l, OP_dadd, OP_daload, OP_dastore, OP_dcmpg, OP_dcmpl, OP_dconst_0, OP_dconst_1, OP_ddiv, OP_dload, OP_dload_0, OP_dload_1, OP_dload_2, OP_dload_3, OP_dmul, OP_dneg, OP_drem, OP_dreturn, OP_dstore, OP_dstore_0, OP_dstore_1, OP_dstore_2, OP_dstore_3, OP_dsub, OP_dup, OP_dup_x1, OP_dup_x2, OP_dup2, OP_dup2_x1, OP_dup2_x2, OP_f2d, OP_f2i, OP_f2l, OP_fadd, OP_faload, OP_fastore, OP_fcmpg, OP_fcmpl, OP_fconst_0, OP_fconst_1, OP_fconst_2, OP_fdiv, OP_fload, OP_fload_0, OP_fload_1, OP_fload_2, OP_fload_3, OP_fmul, OP_fneg, OP_frem, OP_freturn, OP_fstore, OP_fstore_0, OP_fstore_1, OP_fstore_2, OP_fstore_3, OP_fsub, OP_getfield, OP_getstatic, OP_goto, OP_goto_w, OP_i2b, OP_i2c, OP_i2d, OP_i2f, OP_i2l, OP_i2s, OP_iadd, OP_iaload, OP_iand, OP_iastore, OP_iconst_0, OP_iconst_1, OP_iconst_2, OP_iconst_3, OP_iconst_4, OP_iconst_5, OP_iconst_m1, OP_idiv, OP_if_acmpeq, OP_if_acmpne, OP_if_icmpeq, OP_if_icmpge, OP_if_icmpgt, OP_if_icmple, OP_if_icmplt, OP_if_icmpne, OP_ifeq, OP_ifge, OP_ifgt, OP_ifle, OP_iflt, OP_ifne, OP_ifnonnull, OP_ifnull, OP_iinc, OP_iload, OP_iload_0, OP_iload_1, OP_iload_2, OP_iload_3, OP_imul, OP_ineg, OP_instanceof, OP_invokedynamic, OP_invokeinterface, OP_invokespecial, OP_invokestatic, OP_invokevirtual, OP_ior, OP_irem, OP_ireturn, OP_ishl, OP_ishr, OP_istore, OP_istore_0, OP_istore_1, OP_istore_2, OP_istore_3, OP_isub, OP_iushr, OP_ixor, OP_jsr, OP_jsr_w, OP_l2d, OP_l2f, OP_l2i, OP_ladd, OP_laload, OP_land, OP_lastore, OP_lcmp, OP_lconst_0, OP_lconst_1, OP_ldc, OP_ldc_w, OP_ldc2_w, OP_ldiv, OP_lload, OP_lload_0, OP_lload_1, OP_lload_2, OP_lload_3, OP_lmul, OP_lneg, OP_lookupswitch, OP_lor, OP_lrem, OP_lreturn, OP_lshl, OP_lshr, OP_lstore, OP_lstore_0, OP_lstore_1, OP_lstore_2, OP_lstore_3, OP_lsub, OP_lushr, OP_lxor, OP_monitorenter, OP_monitorexit, OP_multianewarray, OP_new, OP_newarray, OP_nop, OP_pop, OP_pop2, OP_putfield, OP_putstatic, OP_ret, OP_return, OP_saload, OP_sastore, OP_sipush, OP_swap, OP_tableswitch, OP_wide, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TYPE_boolean, TYPE_boolean_index, TYPE_byte, TYPE_byte_index, TYPE_char, TYPE_char_index, TYPE_Class, TYPE_double, TYPE_double_index, TYPE_Error, TYPE_Exception, TYPE_float, TYPE_float_index, TYPE_int, TYPE_int_index, TYPE_long, TYPE_long_index, TYPE_MethodHandle, TYPE_MethodType, TYPE_null, TYPE_Object, TYPE_Object_index, TYPE_RuntimeException, TYPE_short, TYPE_short_index, TYPE_String, TYPE_Throwable, TYPE_unknown, TYPE_void, YES
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Constructor Summary
Constructors Constructor Description ConstantInstruction(short opcode)
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Method Summary
All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description boolean
equals(Object o)
String
getPushedType(String[] types)
Computes the type of data pushed onto the stack, or null if none is pushed.byte
getPushedWordSize()
abstract String
getType()
abstract Object
getValue()
int
hashCode()
boolean
isPEI()
PEI == "Potentially excepting instruction"static ConstantInstruction
make(double d)
static ConstantInstruction
make(float f)
static ConstantInstruction
make(int i)
static ConstantInstruction
make(long l)
static ConstantInstruction
make(ConstantPoolReader cp, int index)
static ConstantInstruction
make(String type, Object constant)
static ConstantInstruction
makeClass(String s)
static ConstantInstruction
makeString(String s)
String
toString()
Subclasses must implement toString.void
visit(IInstruction.Visitor v)
Apply a Visitor to this instruction.-
Methods inherited from class com.ibm.wala.shrikeBT.Instruction
clone, getBranchTargets, getOpcode, getPoppedCount, isFallThrough, redirectTargets
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Method Detail
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getValue
public abstract Object getValue()
- Returns:
- the constant value pushed: an Integer, a Long, a Float, a Double, a String, or null
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getType
public abstract String getType()
- Returns:
- the type of the value pushed
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make
public static ConstantInstruction make(String type, Object constant) throws IllegalArgumentException
- Throws:
IllegalArgumentException
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make
public static ConstantInstruction make(int i)
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make
public static ConstantInstruction make(long l)
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make
public static ConstantInstruction make(float f)
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make
public static ConstantInstruction make(double d)
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makeString
public static ConstantInstruction makeString(String s)
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makeClass
public static ConstantInstruction makeClass(String s)
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make
public static ConstantInstruction make(ConstantPoolReader cp, int index)
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getPushedType
public final String getPushedType(String[] types)
Description copied from class:Instruction
Computes the type of data pushed onto the stack, or null if none is pushed.- Specified by:
getPushedType
in interfaceIInstruction
- Overrides:
getPushedType
in classInstruction
- Parameters:
types
- the types of the data popped off the stack by this instruction; if poppedTypes is null, then we don't know the incoming stack types and the result of this method may be less accurate
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getPushedWordSize
public final byte getPushedWordSize()
- Specified by:
getPushedWordSize
in interfaceIInstruction
- Overrides:
getPushedWordSize
in classInstruction
- Returns:
- the JVM word size of the value this instruction pushes onto the stack, or 0 if this instruction doesn't push anything onto the stack.
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visit
public final void visit(IInstruction.Visitor v) throws NullPointerException
Description copied from class:Instruction
Apply a Visitor to this instruction. We invoke the appropriate Visitor method according to the type of this instruction.- Specified by:
visit
in interfaceIInstruction
- Specified by:
visit
in classInstruction
- Throws:
NullPointerException
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toString
public final String toString()
Description copied from class:Instruction
Subclasses must implement toString.- Specified by:
toString
in interfaceIInstruction
- Specified by:
toString
in classInstruction
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isPEI
public boolean isPEI()
Description copied from interface:IInstruction
PEI == "Potentially excepting instruction"- Returns:
- true iff this instruction might throw an exception
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