jasm.lang
Class Bytecode

java.lang.Object
  jasm.lang.Bytecode

Direct Known Subclasses:

Bytecode.ArrayLength, Bytecode.ArrayLoad, Bytecode.ArrayStore, Bytecode.BinOp, Bytecode.Branch, Bytecode.CheckCast, Bytecode.Cmp, Bytecode.Conversion, Bytecode.Dup, Bytecode.DupX1, Bytecode.DupX2, Bytecode.GetField, Bytecode.Iinc, Bytecode.InstanceOf, Bytecode.Invoke, 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

public abstract class Bytecode
extends java.lang.Object

Nested Class Summary

static class	Bytecode.ArrayLength Represents the arraylength bytecode
static class	Bytecode.ArrayLoad Represents the arrayload bytecode.
static class	Bytecode.ArrayStore Represents the arraystore bytecode.
static class	Bytecode.BinOp This represents all binary operators involving two operands on the stack.
static class	Bytecode.Branch This class abstracts different kinds of branching statements (e.g.
static class	Bytecode.CheckCast Represents the check cast bytecode.
static class	Bytecode.Cmp This represents the bytecodes fcmpl, fcmpg, dcmpl, dcmpg and lcmp
static class	Bytecode.Conversion This represents the family of primitive conversion operations, such as i2f, d2f, l2i etc.
static class	Bytecode.Dup Represents the dup and dup2 bytecodes
static class	Bytecode.DupX1 Represents the dupx1 bytecode
static class	Bytecode.DupX2 Represents the dupx2 bytecode
static class	Bytecode.FieldMode
static class	Bytecode.GetField This represents the getfield and getstatic bytecodes.
static class	Bytecode.Goto This class abstracts the unconditional branch bytecode goto.
static class	Bytecode.If This represents the bytecodes ifeq, ifne, iflt, ifge, ifgt, ifle.
static class	Bytecode.IfCmp This represents the bytecodes ifacmp_XX and ificmp_xx
static class	Bytecode.IfMode
static class	Bytecode.Iinc Represents the iinc bytecode for incrementing a local variable.
static class	Bytecode.InstanceOf Represents the instanceof bytecode
static class	Bytecode.Invoke This represents the invokevirtual, invokespecial, invokestatic and invokeinterface bytecodes
static class	Bytecode.InvokeMode
static class	Bytecode.Label This does not actually correspond to a bytecode per se.
static class	Bytecode.Load Represents all bytecodes for loading from a local variable, including iload, aload, lload etc.
static class	Bytecode.LoadConst Represents all bytecodes for loading constants.
static class	Bytecode.MonitorEnter Represents a monitorenter bytecode
static class	Bytecode.MonitorExit Represents a monitorexit bytecode
static class	Bytecode.Neg
static class	Bytecode.New Represents the new, newarray and anewarray, multinewarray bytecodes.
static class	Bytecode.Nop Represents the nop bytecode.
static class	Bytecode.Pop Represents the pop and pop2 bytecodes
static class	Bytecode.PutField This represents the putfield and putstatic bytecodes.
static class	Bytecode.Return Represents return bytecodes, including ireturn, areturn, etc.
static class	Bytecode.Store Represents all bytecodes for storing to a local variable, including istore, astore, lstore etc.
static class	Bytecode.Swap Represents the swap bytecode
static class	Bytecode.Switch This represents the bytecodes tableswitch and lookupswitch
static class	Bytecode.Throw Represents the athrow bytecode.

Field Summary

static int	AALOAD
static int	AASTORE
static int	ACONST_NULL
static int	ALOAD
static int	ALOAD_0
static int	ALOAD_1
static int	ALOAD_2
static int	ALOAD_3
static int	ANEWARRAY
static int	ARETURN
static int	ARRAYLENGTH
static int	ASTORE
static int	ASTORE_0
static int	ASTORE_1
static int	ASTORE_2
static int	ASTORE_3
static int	ATHROW
static int	BALOAD
static int	BASTORE
static int	BIPUSH
static int	BREAKPOINT
static int	CALOAD
static int	CASTORE
static int	CHECKCAST
static int	D2F
static int	D2I
static int	D2L
static int	DADD
static int	DALOAD
static int	DASTORE
static int	DCMPG
static int	DCMPL
static int	DCONST_0
static int	DCONST_1
static int	DDIV
static int	DLOAD
static int	DLOAD_0
static int	DLOAD_1
static int	DLOAD_2
static int	DLOAD_3
static int	DMUL
static int	DNEG
static int	DREM
static int	DRETURN
static int	DSTORE
static int	DSTORE_0
static int	DSTORE_1
static int	DSTORE_2
static int	DSTORE_3
static int	DSUB
static int	DUP
static int	DUP_X1
static int	DUP_X2
static int	DUP2
static int	DUP2_X1
static int	DUP2_X2
static int	F2D
static int	F2I
static int	F2L
static int	FADD
static int	FALOAD
static int	FASTORE
static int	FCMPG
static int	FCMPL
static int	FCONST_0
static int	FCONST_1
static int	FCONST_2
static int	FDIV
static int	FLOAD
static int	FLOAD_0
static int	FLOAD_1
static int	FLOAD_2
static int	FLOAD_3
static int	FMUL
static int	FNEG
static int	FREM
static int	FRETURN
static int	FSTORE
static int	FSTORE_0
static int	FSTORE_1
static int	FSTORE_2
static int	FSTORE_3
static int	FSUB
static int	GETFIELD
static int	GETSTATIC
static int	GOTO
static int	GOTO_W
static int	I2B
static int	I2C
static int	I2D
static int	I2F
static int	I2L
static int	I2S
static int	IADD
static int	IALOAD
static int	IAND
static int	IASTORE
static int	ICONST_0
static int	ICONST_1
static int	ICONST_2
static int	ICONST_3
static int	ICONST_4
static int	ICONST_5
static int	ICONST_M1
static int	IDIV
static int	IF_ACMPEQ
static int	IF_ACMPNE
static int	IF_ICMPEQ
static int	IF_ICMPGE
static int	IF_ICMPGT
static int	IF_ICMPLE
static int	IF_ICMPLT
static int	IF_ICMPNE
static int	IFEQ
static int	IFGE
static int	IFGT
static int	IFLE
static int	IFLT
static int	IFNE
static int	IFNONNULL
static int	IFNULL
static int	IINC
static int	ILOAD
static int	ILOAD_0
static int	ILOAD_1
static int	ILOAD_2
static int	ILOAD_3
static int	IMPDEP1
static int	IMPDEP2
static int	IMUL
static int	INEG
static int	INSTANCEOF
static int	INVOKEINTERFACE
static int	INVOKESPECIAL
static int	INVOKESTATIC
static int	INVOKEVIRTUAL
static int	IOR
static int	IREM
static int	IRETURN
static int	ISHL
static int	ISHR
static int	ISTORE
static int	ISTORE_0
static int	ISTORE_1
static int	ISTORE_2
static int	ISTORE_3
static int	ISUB
static int	IUSHR
static int	IXOR
static int	JSR
static int	JSR_W
static int	L2D
static int	L2F
static int	L2I
static int	LADD
static int	LALOAD
static int	LAND
static int	LASTORE
static int	LCMP
static int	LCONST_0
static int	LCONST_1
static int	LDC
static int	LDC_W
static int	LDC2_W
static int	LDIV
static int	LLOAD
static int	LLOAD_0
static int	LLOAD_1
static int	LLOAD_2
static int	LLOAD_3
static int	LMUL
static int	LNEG
static int	LOOKUPSWITCH
static int	LOR
static int	LREM
static int	LRETURN
static int	LSHL
static int	LSHR
static int	LSTORE
static int	LSTORE_0
static int	LSTORE_1
static int	LSTORE_2
static int	LSTORE_3
static int	LSUB
static int	LUSHR
static int	LXOR
static int	MONITORENTER
static int	MONITOREXIT
static int	MULTIANEWARRAY
static int	NEW
static int	NEWARRAY
static int	NOP
static int	POP
static int	POP2
static int	PUTFIELD
static int	PUTSTATIC
static int	RET
static int	RETURN
static int	SALOAD
static int	SASTORE
static int	SIPUSH
static int	SWAP
static java.util.Comparator<Pair<java.lang.Integer,java.lang.String>>	switchcomp
static int	T_BOOLEAN
static int	T_BYTE
static int	T_CHAR
static int	T_DOUBLE
static int	T_FLOAT
static int	T_INT
static int	T_LONG
static int	T_SHORT
static int	TABLESWITCH
static int	UNUSED
static int	WIDE

Constructor Summary

Bytecode()

Method Summary

void	addPoolItems(java.util.Set<Constant.Info> constantPool) This method adds any constant pool items required by the bytecode to the constantPool.
static java.lang.String[]	get()
abstract int	stackDiff() This method determines the change in stack resulting from this bytecode.
abstract byte[]	toBytes(int offset, java.util.Map<java.lang.String,java.lang.Integer> labelOffsets, java.util.Map<Constant.Info,java.lang.Integer> constantPool) Translate this Java bytecode into bytes.

Methods inherited from class java.lang.Object

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

Field Detail

switchcomp

public static final java.util.Comparator<Pair<java.lang.Integer,java.lang.String>> switchcomp

NOP

public static final int NOP

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Constant Field Values

ACONST_NULL

public static final int ACONST_NULL

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ICONST_M1

public static final int ICONST_M1

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ICONST_0

public static final int ICONST_0

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ICONST_1

public static final int ICONST_1

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ICONST_2

public static final int ICONST_2

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ICONST_3

public static final int ICONST_3

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ICONST_4

public static final int ICONST_4

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ICONST_5

public static final int ICONST_5

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LCONST_0

public static final int LCONST_0

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LCONST_1

public static final int LCONST_1

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FCONST_0

public static final int FCONST_0

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FCONST_1

public static final int FCONST_1

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FCONST_2

public static final int FCONST_2

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DCONST_0

public static final int DCONST_0

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DCONST_1

public static final int DCONST_1

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BIPUSH

public static final int BIPUSH

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SIPUSH

public static final int SIPUSH

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LDC

public static final int LDC

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LDC_W

public static final int LDC_W

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LDC2_W

public static final int LDC2_W

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Constant Field Values

ILOAD

public static final int ILOAD

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LLOAD

public static final int LLOAD

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FLOAD

public static final int FLOAD

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DLOAD

public static final int DLOAD

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ALOAD

public static final int ALOAD

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ILOAD_0

public static final int ILOAD_0

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ILOAD_1

public static final int ILOAD_1

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ILOAD_2

public static final int ILOAD_2

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ILOAD_3

public static final int ILOAD_3

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LLOAD_0

public static final int LLOAD_0

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LLOAD_1

public static final int LLOAD_1

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LLOAD_2

public static final int LLOAD_2

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LLOAD_3

public static final int LLOAD_3

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FLOAD_0

public static final int FLOAD_0

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FLOAD_1

public static final int FLOAD_1

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FLOAD_2

public static final int FLOAD_2

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FLOAD_3

public static final int FLOAD_3

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DLOAD_0

public static final int DLOAD_0

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DLOAD_1

public static final int DLOAD_1

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DLOAD_2

public static final int DLOAD_2

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DLOAD_3

public static final int DLOAD_3

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ALOAD_0

public static final int ALOAD_0

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ALOAD_1

public static final int ALOAD_1

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ALOAD_2

public static final int ALOAD_2

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ALOAD_3

public static final int ALOAD_3

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IALOAD

public static final int IALOAD

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LALOAD

public static final int LALOAD

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FALOAD

public static final int FALOAD

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DALOAD

public static final int DALOAD

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AALOAD

public static final int AALOAD

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BALOAD

public static final int BALOAD

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CALOAD

public static final int CALOAD

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SALOAD

public static final int SALOAD

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ISTORE

public static final int ISTORE

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LSTORE

public static final int LSTORE

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FSTORE

public static final int FSTORE

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DSTORE

public static final int DSTORE

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ASTORE

public static final int ASTORE

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ISTORE_0

public static final int ISTORE_0

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ISTORE_1

public static final int ISTORE_1

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ISTORE_2

public static final int ISTORE_2

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ISTORE_3

public static final int ISTORE_3

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LSTORE_0

public static final int LSTORE_0

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LSTORE_1

public static final int LSTORE_1

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LSTORE_2

public static final int LSTORE_2

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LSTORE_3

public static final int LSTORE_3

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FSTORE_0

public static final int FSTORE_0

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FSTORE_1

public static final int FSTORE_1

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FSTORE_2

public static final int FSTORE_2

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FSTORE_3

public static final int FSTORE_3

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DSTORE_0

public static final int DSTORE_0

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DSTORE_1

public static final int DSTORE_1

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DSTORE_2

public static final int DSTORE_2

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DSTORE_3

public static final int DSTORE_3

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ASTORE_0

public static final int ASTORE_0

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ASTORE_1

public static final int ASTORE_1

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ASTORE_2

public static final int ASTORE_2

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ASTORE_3

public static final int ASTORE_3

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IASTORE

public static final int IASTORE

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LASTORE

public static final int LASTORE

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FASTORE

public static final int FASTORE

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DASTORE

public static final int DASTORE

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AASTORE

public static final int AASTORE

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BASTORE

public static final int BASTORE

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CASTORE

public static final int CASTORE

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SASTORE

public static final int SASTORE

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POP

public static final int POP

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POP2

public static final int POP2

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DUP

public static final int DUP

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DUP_X1

public static final int DUP_X1

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DUP_X2

public static final int DUP_X2

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DUP2

public static final int DUP2

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DUP2_X1

public static final int DUP2_X1

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DUP2_X2

public static final int DUP2_X2

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SWAP

public static final int SWAP

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IADD

public static final int IADD

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LADD

public static final int LADD

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FADD

public static final int FADD

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DADD

public static final int DADD

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ISUB

public static final int ISUB

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LSUB

public static final int LSUB

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FSUB

public static final int FSUB

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DSUB

public static final int DSUB

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IMUL

public static final int IMUL

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LMUL

public static final int LMUL

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FMUL

public static final int FMUL

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DMUL

public static final int DMUL

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IDIV

public static final int IDIV

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LDIV

public static final int LDIV

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FDIV

public static final int FDIV

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DDIV

public static final int DDIV

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IREM

public static final int IREM

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LREM

public static final int LREM

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FREM

public static final int FREM

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DREM

public static final int DREM

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INEG

public static final int INEG

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LNEG

public static final int LNEG

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FNEG

public static final int FNEG

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DNEG

public static final int DNEG

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ISHL

public static final int ISHL

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LSHL

public static final int LSHL

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ISHR

public static final int ISHR

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LSHR

public static final int LSHR

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IUSHR

public static final int IUSHR

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LUSHR

public static final int LUSHR

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IAND

public static final int IAND

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LAND

public static final int LAND

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IOR

public static final int IOR

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LOR

public static final int LOR

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IXOR

public static final int IXOR

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Constant Field Values

LXOR

public static final int LXOR

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Constant Field Values

IINC

public static final int IINC

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I2L

public static final int I2L

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Constant Field Values

I2F

public static final int I2F

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Constant Field Values

I2D

public static final int I2D

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L2I

public static final int L2I

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L2F

public static final int L2F

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L2D

public static final int L2D

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F2I

public static final int F2I

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F2L

public static final int F2L

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F2D

public static final int F2D

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D2I

public static final int D2I

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D2L

public static final int D2L

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D2F

public static final int D2F

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Constant Field Values

I2B

public static final int I2B

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I2C

public static final int I2C

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I2S

public static final int I2S

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Constant Field Values

LCMP

public static final int LCMP

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Constant Field Values

FCMPL

public static final int FCMPL

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Constant Field Values

FCMPG

public static final int FCMPG

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Constant Field Values

DCMPL

public static final int DCMPL

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DCMPG

public static final int DCMPG

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IFEQ

public static final int IFEQ

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IFNE

public static final int IFNE

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IFLT

public static final int IFLT

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IFGE

public static final int IFGE

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IFGT

public static final int IFGT

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IFLE

public static final int IFLE

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IF_ICMPEQ

public static final int IF_ICMPEQ

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IF_ICMPNE

public static final int IF_ICMPNE

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IF_ICMPLT

public static final int IF_ICMPLT

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IF_ICMPGE

public static final int IF_ICMPGE

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IF_ICMPGT

public static final int IF_ICMPGT

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IF_ICMPLE

public static final int IF_ICMPLE

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IF_ACMPEQ

public static final int IF_ACMPEQ

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Constant Field Values

IF_ACMPNE

public static final int IF_ACMPNE

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GOTO

public static final int GOTO

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JSR

public static final int JSR

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Constant Field Values

RET

public static final int RET

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Constant Field Values

TABLESWITCH

public static final int TABLESWITCH

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Constant Field Values

LOOKUPSWITCH

public static final int LOOKUPSWITCH

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IRETURN

public static final int IRETURN

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LRETURN

public static final int LRETURN

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FRETURN

public static final int FRETURN

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DRETURN

public static final int DRETURN

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ARETURN

public static final int ARETURN

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RETURN

public static final int RETURN

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GETSTATIC

public static final int GETSTATIC

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PUTSTATIC

public static final int PUTSTATIC

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GETFIELD

public static final int GETFIELD

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PUTFIELD

public static final int PUTFIELD

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INVOKEVIRTUAL

public static final int INVOKEVIRTUAL

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INVOKESPECIAL

public static final int INVOKESPECIAL

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INVOKESTATIC

public static final int INVOKESTATIC

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INVOKEINTERFACE

public static final int INVOKEINTERFACE

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UNUSED

public static final int UNUSED

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NEW

public static final int NEW

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NEWARRAY

public static final int NEWARRAY

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ANEWARRAY

public static final int ANEWARRAY

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ARRAYLENGTH

public static final int ARRAYLENGTH

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ATHROW

public static final int ATHROW

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CHECKCAST

public static final int CHECKCAST

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INSTANCEOF

public static final int INSTANCEOF

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MONITORENTER

public static final int MONITORENTER

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MONITOREXIT

public static final int MONITOREXIT

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WIDE

public static final int WIDE

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MULTIANEWARRAY

public static final int MULTIANEWARRAY

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IFNULL

public static final int IFNULL

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IFNONNULL

public static final int IFNONNULL

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Constant Field Values

GOTO_W

public static final int GOTO_W

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Constant Field Values

JSR_W

public static final int JSR_W

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Constant Field Values

BREAKPOINT

public static final int BREAKPOINT

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IMPDEP1

public static final int IMPDEP1

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IMPDEP2

public static final int IMPDEP2

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Constant Field Values

T_BOOLEAN

public static final int T_BOOLEAN

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T_CHAR

public static final int T_CHAR

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T_FLOAT

public static final int T_FLOAT

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Constant Field Values

T_DOUBLE

public static final int T_DOUBLE

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Constant Field Values

T_BYTE

public static final int T_BYTE

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Constant Field Values

T_SHORT

public static final int T_SHORT

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Constant Field Values

T_INT

public static final int T_INT

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Constant Field Values

T_LONG

public static final int T_LONG

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Constant Field Values

Constructor Detail

Bytecode

public Bytecode()

Method Detail

stackDiff

public abstract int stackDiff()

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.

Returns:

addPoolItems

public void addPoolItems(java.util.Set<Constant.Info> constantPool)

This method adds any constant pool items required by the bytecode to the constantPool.

Parameters:

constantPool -

toBytes

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

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.

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:

get

public static java.lang.String[] get()