jasm.lang

Class Bytecode.IfCmp

java.lang.Object

jasm.lang.Bytecode

jasm.lang.Bytecode.Branch

jasm.lang.Bytecode.IfCmp

Enclosing class:

Bytecode

public static class Bytecode.IfCmp
extends Bytecode.Branch

This represents the bytecodes ifacmp_XX and ificmp_xx

Nested Class Summary

Nested classes/interfaces inherited from class jasm.lang.Bytecode

Bytecode.ArrayLength, Bytecode.ArrayLoad, Bytecode.ArrayStore, Bytecode.BinOp, Bytecode.Branch, Bytecode.CheckCast, Bytecode.Cmp, Bytecode.Conversion, Bytecode.Dup, Bytecode.DupX1, Bytecode.DupX2, Bytecode.FieldMode, Bytecode.GetField, Bytecode.Goto, Bytecode.If, Bytecode.IfCmp, Bytecode.IfMode, Bytecode.Iinc, Bytecode.InstanceOf, Bytecode.Invoke, Bytecode.InvokeMode, Bytecode.Label, Bytecode.Load, Bytecode.LoadConst, Bytecode.MonitorEnter, Bytecode.MonitorExit, Bytecode.Neg, Bytecode.New, Bytecode.Nop, Bytecode.Pop, Bytecode.PutField, Bytecode.Return, Bytecode.Store, Bytecode.Swap, Bytecode.Switch, Bytecode.Throw

Field Summary

Fields

Modifier and Type	Field and Description
int	cond
static int	EQ
static int	GE
static int	GT
static int	LE
static int	LT
static int	NE
static String[]	str
JvmType	type

Fields inherited from class jasm.lang.Bytecode.Branch

islong, label

Fields inherited from class jasm.lang.Bytecode

AALOAD, AASTORE, ACONST_NULL, ALOAD, ALOAD_0, ALOAD_1, ALOAD_2, ALOAD_3, ANEWARRAY, ARETURN, ARRAYLENGTH, ASTORE, ASTORE_0, ASTORE_1, ASTORE_2, ASTORE_3, ATHROW, BALOAD, BASTORE, BIPUSH, BREAKPOINT, CALOAD, CASTORE, CHECKCAST, 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, 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, GETSTATIC, 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, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, ILOAD_0, ILOAD_1, ILOAD_2, ILOAD_3, IMPDEP1, IMPDEP2, IMUL, INEG, INSTANCEOF, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISTORE_0, ISTORE_1, ISTORE_2, ISTORE_3, ISUB, IUSHR, IXOR, JSR, JSR_W, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDC_W, LDC2_W, LDIV, LLOAD, LLOAD_0, LLOAD_1, LLOAD_2, LLOAD_3, LMUL, LNEG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSTORE_0, LSTORE_1, LSTORE_2, LSTORE_3, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SWAP, switchcomp, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, UNUSED, WIDE

Constructor Summary

Constructors

Constructor and Description
IfCmp(int cond, JvmType type, String label)
IfCmp(int cond, JvmType type, String label, boolean islong)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
Bytecode.IfCmp	fixLong()
int	hashCode()
int	stackDiff() This method determines the change in stack resulting from this bytecode.
byte[]	toBytes(int offset, Map<String,Integer> labelOffsets, Map<Constant.Info,Integer> constantPool) Translate this Java bytecode into bytes.
String	toString()

Methods inherited from class jasm.lang.Bytecode

addPoolItems, get

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

EQ

public static final int EQ

See Also:

Constant Field Values

NE

public static final int NE

See Also:

Constant Field Values

LT

public static final int LT

See Also:

Constant Field Values

GE

public static final int GE

See Also:

Constant Field Values

GT

public static final int GT

See Also:

Constant Field Values

LE

public static final int LE

See Also:

Constant Field Values

str

public static final String[] str

cond

public final int cond

type

public final JvmType type

Constructor Detail

IfCmp

public IfCmp(int cond,
             JvmType type,
             String label)

IfCmp

public IfCmp(int cond,
             JvmType type,
             String label,
             boolean islong)

Method Detail

stackDiff

public int stackDiff()

Description copied from class: Bytecode

This method determines the change in stack resulting from this bytecode. For example, +1 indicates the instruction puts one thing onto the stack. Likewise, -2 means this instruction takes two things off the stack. The primary purpose of this method is to help compute the maxStack requirement for a method.

Specified by:

stackDiff in class Bytecode

Returns:

toBytes

public byte[] toBytes(int offset,
                      Map<String,Integer> labelOffsets,
                      Map<Constant.Info,Integer> constantPool)

Description copied from class: Bytecode

Translate this Java bytecode into bytes. If the bytecode requires a constant pool item which is not present in the constantPool map, then the appropriate CONSTANT_Info object is added, and given the next available index.

Specified by:

toBytes in class Bytecode

Parameters:

offset - Offset of this bytecode

labelOffsets - Offsets of any labels used in branch bytecodes

constantPool - Indices of constant pool items used in various bytecodes (e.g. ldc, putfield, etc)

Returns:

fixLong

public Bytecode.IfCmp fixLong()

Specified by:

fixLong in class Bytecode.Branch

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object