InstructionAdapter (mvel 2.2.8.Final API)

java.lang.Object
- org.mvel2.asm.MethodVisitor
- - org.mvel2.asm.commons.InstructionAdapter

```
public class InstructionAdapter
extends MethodVisitor
```
A MethodVisitor providing a more detailed API to generate and transform instructions.

Author:

Eric Bruneton

Field Summary

Fields
Modifier and Type Field and Description

static Type OBJECT_TYPE
- Fields inherited from class org.mvel2.asm.MethodVisitor
  api, mv

Fields
Modifier and Type	Field and Description
`static Type`	`OBJECT_TYPE`

Constructor Summary

Constructors
Modifier	Constructor and Description
`protected`	`InstructionAdapter(int api, MethodVisitor mv)` Creates a new `InstructionAdapter`.
	`InstructionAdapter(MethodVisitor mv)` Creates a new `InstructionAdapter`.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`aconst(Object cst)`
`void`	`add(Type type)`
`void`	`aload(Type type)`
`void`	`and(Type type)`
`void`	`anew(Type type)`
`void`	`areturn(Type t)`
`void`	`arraylength()`
`void`	`astore(Type type)`
`void`	`athrow()`
`void`	`cast(Type from, Type to)`
`void`	`checkcast(Type type)`
`void`	`cmpg(Type type)`
`void`	`cmpl(Type type)`
`void`	`dconst(double cst)`
`void`	`div(Type type)`
`void`	`dup()`
`void`	`dup2()`
`void`	`dup2X1()`
`void`	`dup2X2()`
`void`	`dupX1()`
`void`	`dupX2()`
`void`	`fconst(float cst)`
`void`	`getfield(String owner, String name, String desc)`
`void`	`getstatic(String owner, String name, String desc)`
`void`	`goTo(Label label)`
`void`	`hconst(Handle handle)`
`void`	`iconst(int cst)`
`void`	`ifacmpeq(Label label)`
`void`	`ifacmpne(Label label)`
`void`	`ifeq(Label label)`
`void`	`ifge(Label label)`
`void`	`ifgt(Label label)`
`void`	`ificmpeq(Label label)`
`void`	`ificmpge(Label label)`
`void`	`ificmpgt(Label label)`
`void`	`ificmple(Label label)`
`void`	`ificmplt(Label label)`
`void`	`ificmpne(Label label)`
`void`	`ifle(Label label)`
`void`	`iflt(Label label)`
`void`	`ifne(Label label)`
`void`	`ifnonnull(Label label)`
`void`	`ifnull(Label label)`
`void`	`iinc(int var, int increment)`
`void`	`instanceOf(Type type)`
`void`	`invokedynamic(String name, String desc, Handle bsm, Object[] bsmArgs)`
`void`	`invokeinterface(String owner, String name, String desc)`
`void`	`invokespecial(String owner, String name, String desc)` Deprecated.
`void`	`invokespecial(String owner, String name, String desc, boolean itf)`
`void`	`invokestatic(String owner, String name, String desc)` Deprecated.
`void`	`invokestatic(String owner, String name, String desc, boolean itf)`
`void`	`invokevirtual(String owner, String name, String desc)` Deprecated.
`void`	`invokevirtual(String owner, String name, String desc, boolean itf)`
`void`	`jsr(Label label)`
`void`	`lcmp()`
`void`	`lconst(long cst)`
`void`	`load(int var, Type type)`
`void`	`lookupswitch(Label dflt, int[] keys, Label[] labels)`
`void`	`mark(Label label)`
`void`	`monitorenter()`
`void`	`monitorexit()`
`void`	`mul(Type type)`
`void`	`multianewarray(String desc, int dims)`
`void`	`neg(Type type)`
`void`	`newarray(Type type)`
`void`	`nop()`
`void`	`or(Type type)`
`void`	`pop()`
`void`	`pop2()`
`void`	`putfield(String owner, String name, String desc)`
`void`	`putstatic(String owner, String name, String desc)`
`void`	`rem(Type type)`
`void`	`ret(int var)`
`void`	`shl(Type type)`
`void`	`shr(Type type)`
`void`	`store(int var, Type type)`
`void`	`sub(Type type)`
`void`	`swap()`
`void`	`tableswitch(int min, int max, Label dflt, Label... labels)`
`void`	`tconst(Type type)`
`void`	`ushr(Type type)`
`void`	`visitFieldInsn(int opcode, String owner, String name, String desc)` Visits a field instruction.
`void`	`visitIincInsn(int var, int increment)` Visits an IINC instruction.
`void`	`visitInsn(int opcode)` Visits a zero operand instruction.
`void`	`visitIntInsn(int opcode, int operand)` Visits an instruction with a single int operand.
`void`	`visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs)` Visits an invokedynamic instruction.
`void`	`visitJumpInsn(int opcode, Label label)` Visits a jump instruction.
`void`	`visitLabel(Label label)` Visits a label.
`void`	`visitLdcInsn(Object cst)` Visits a LDC instruction.
`void`	`visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)` Visits a LOOKUPSWITCH instruction.
`void`	`visitMethodInsn(int opcode, String owner, String name, String desc)` Deprecated.
`void`	`visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf)` Visits a method instruction.
`void`	`visitMultiANewArrayInsn(String desc, int dims)` Visits a MULTIANEWARRAY instruction.
`void`	`visitTableSwitchInsn(int min, int max, Label dflt, Label... labels)` Visits a TABLESWITCH instruction.
`void`	`visitTypeInsn(int opcode, String type)` Visits a type instruction.
`void`	`visitVarInsn(int opcode, int var)` Visits a local variable instruction.
`void`	`xor(Type type)`

Methods inherited from class org.mvel2.asm.MethodVisitor
visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitEnd, visitFrame, visitInsnAnnotation, visitLineNumber, visitLocalVariable, visitLocalVariableAnnotation, visitMaxs, visitParameter, visitParameterAnnotation, visitTryCatchAnnotation, visitTryCatchBlock, visitTypeAnnotation

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - OBJECT_TYPE
```
public static final Type OBJECT_TYPE
```
- Constructor Detail
  - InstructionAdapter
```
public InstructionAdapter(MethodVisitor mv)
```
    Creates a new InstructionAdapter. Subclasses must not use this constructor. Instead, they must use the InstructionAdapter(int, MethodVisitor) version.
    
    Parameters:
    mv - the method visitor to which this adapter delegates calls.
    
    Throws:
    
    IllegalStateException - If a subclass calls this constructor.
  - InstructionAdapter
```
protected InstructionAdapter(int api,
                  MethodVisitor mv)
```
    Creates a new InstructionAdapter.
    
    Parameters:
    api - the ASM API version implemented by this visitor. Must be one of Opcodes.ASM4 or Opcodes.ASM5.
    mv - the method visitor to which this adapter delegates calls.
- Method Detail
  - visitInsn
```
public void visitInsn(int opcode)
```
    Description copied from class: MethodVisitor
    
    Visits a zero operand instruction.
    
    Overrides:
    
    visitInsn in class MethodVisitor
    
    Parameters:
    opcode - the opcode of the instruction to be visited. This opcode is either NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER, or MONITOREXIT.
  - visitIntInsn
```
public void visitIntInsn(int opcode,
                int operand)
```
    Description copied from class: MethodVisitor
    
    Visits an instruction with a single int operand.
    
    Overrides:
    
    visitIntInsn in class MethodVisitor
    
    Parameters:
    opcode - the opcode of the instruction to be visited. This opcode is either BIPUSH, SIPUSH or NEWARRAY.
    operand - the operand of the instruction to be visited.
    When opcode is BIPUSH, operand value should be between Byte.MIN_VALUE and Byte.MAX_VALUE.
    When opcode is SIPUSH, operand value should be between Short.MIN_VALUE and Short.MAX_VALUE.
    When opcode is NEWARRAY, operand value should be one of Opcodes.T_BOOLEAN, Opcodes.T_CHAR, Opcodes.T_FLOAT, Opcodes.T_DOUBLE, Opcodes.T_BYTE, Opcodes.T_SHORT, Opcodes.T_INT or Opcodes.T_LONG.
  - visitVarInsn
```
public void visitVarInsn(int opcode,
                int var)
```
    Description copied from class: MethodVisitor
    
    Visits a local variable instruction. A local variable instruction is an instruction that loads or stores the value of a local variable.
    
    Overrides:
    
    visitVarInsn in class MethodVisitor
    
    Parameters:
    opcode - the opcode of the local variable instruction to be visited. This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET.
    var - the operand of the instruction to be visited. This operand is the index of a local variable.
  - visitTypeInsn
```
public void visitTypeInsn(int opcode,
                 String type)
```
    Description copied from class: MethodVisitor
    
    Visits a type instruction. A type instruction is an instruction that takes the internal name of a class as parameter.
    
    Overrides:
    
    visitTypeInsn in class MethodVisitor
    
    Parameters:
    opcode - the opcode of the type instruction to be visited. This opcode is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.
    type - the operand of the instruction to be visited. This operand must be the internal name of an object or array class (see getInternalName).
  - visitFieldInsn
```
public void visitFieldInsn(int opcode,
                  String owner,
                  String name,
                  String desc)
```
    Description copied from class: MethodVisitor
    
    Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object.
    
    Overrides:
    
    visitFieldInsn in class MethodVisitor
    
    Parameters:
    opcode - the opcode of the type instruction to be visited. This opcode is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.
    owner - the internal name of the field's owner class (see getInternalName).
    name - the field's name.
    desc - the field's descriptor (see Type).
  - visitMethodInsn
```
@Deprecated
public void visitMethodInsn(int opcode,
                              String owner,
                              String name,
                              String desc)
```
    Deprecated.
    
    Description copied from class: MethodVisitor
    
    Visits a method instruction. A method instruction is an instruction that invokes a method.
    
    Overrides:
    
    visitMethodInsn in class MethodVisitor
    
    Parameters:
    opcode - the opcode of the type instruction to be visited. This opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.
    owner - the internal name of the method's owner class (see getInternalName).
    name - the method's name.
    desc - the method's descriptor (see Type).
  - visitMethodInsn
```
public void visitMethodInsn(int opcode,
                   String owner,
                   String name,
                   String desc,
                   boolean itf)
```
    Description copied from class: MethodVisitor
    
    Visits a method instruction. A method instruction is an instruction that invokes a method.
    
    Overrides:
    
    visitMethodInsn in class MethodVisitor
    
    Parameters:
    opcode - the opcode of the type instruction to be visited. This opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.
    owner - the internal name of the method's owner class (see getInternalName).
    name - the method's name.
    desc - the method's descriptor (see Type).
    itf - if the method's owner class is an interface.
  - visitInvokeDynamicInsn
```
public void visitInvokeDynamicInsn(String name,
                          String desc,
                          Handle bsm,
                          Object... bsmArgs)
```
    Description copied from class: MethodVisitor
    
    Visits an invokedynamic instruction.
    
    Overrides:
    
    visitInvokeDynamicInsn in class MethodVisitor
    
    Parameters:
    name - the method's name.
    desc - the method's descriptor (see Type).
    bsm - the bootstrap method.
    bsmArgs - the bootstrap method constant arguments. Each argument must be an Integer, Float, Long, Double, String, Type or Handle value. This method is allowed to modify the content of the array so a caller should expect that this array may change.
  - visitJumpInsn
```
public void visitJumpInsn(int opcode,
                 Label label)
```
    Description copied from class: MethodVisitor
    
    Visits a jump instruction. A jump instruction is an instruction that may jump to another instruction.
    
    Overrides:
    
    visitJumpInsn in class MethodVisitor
    
    Parameters:
    opcode - the opcode of the type instruction to be visited. This opcode is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.
    label - the operand of the instruction to be visited. This operand is a label that designates the instruction to which the jump instruction may jump.
  - visitLabel
```
public void visitLabel(Label label)
```
    Description copied from class: MethodVisitor
    
    Visits a label. A label designates the instruction that will be visited just after it.
    
    Overrides:
    
    visitLabel in class MethodVisitor
    
    Parameters:
    label - a Label object.
  - visitLdcInsn
```
public void visitLdcInsn(Object cst)
```
    Description copied from class: MethodVisitor
    Visits a LDC instruction. Note that new constant types may be added in future versions of the Java Virtual Machine. To easily detect new constant types, implementations of this method should check for unexpected constant types, like this:
```
 if (cst instanceof Integer) {
     // ...
 } else if (cst instanceof Float) {
     // ...
 } else if (cst instanceof Long) {
     // ...
 } else if (cst instanceof Double) {
     // ...
 } else if (cst instanceof String) {
     // ...
 } else if (cst instanceof Type) {
     int sort = ((Type) cst).getSort();
     if (sort == Type.OBJECT) {
         // ...
     } else if (sort == Type.ARRAY) {
         // ...
     } else if (sort == Type.METHOD) {
         // ...
     } else {
         // throw an exception
     }
 } else if (cst instanceof Handle) {
     // ...
 } else {
     // throw an exception
 }
 
```
    Overrides:
    
    visitLdcInsn in class MethodVisitor
    
    Parameters:
    cst - the constant to be loaded on the stack. This parameter must be a non null Integer, a Float, a Long, a Double, a String, a Type of OBJECT or ARRAY sort for .class constants, for classes whose version is 49.0, a Type of METHOD sort or a Handle for MethodType and MethodHandle constants, for classes whose version is 51.0.
  - visitIincInsn
```
public void visitIincInsn(int var,
                 int increment)
```
    Description copied from class: MethodVisitor
    
    Visits an IINC instruction.
    
    Overrides:
    
    visitIincInsn in class MethodVisitor
    
    Parameters:
    var - index of the local variable to be incremented.
    increment - amount to increment the local variable by.
  - visitTableSwitchInsn
```
public void visitTableSwitchInsn(int min,
                        int max,
                        Label dflt,
                        Label... labels)
```
    Description copied from class: MethodVisitor
    
    Visits a TABLESWITCH instruction.
    
    Overrides:
    
    visitTableSwitchInsn in class MethodVisitor
    
    Parameters:
    min - the minimum key value.
    max - the maximum key value.
    dflt - beginning of the default handler block.
    labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the min + i key.
  - visitLookupSwitchInsn
```
public void visitLookupSwitchInsn(Label dflt,
                         int[] keys,
                         Label[] labels)
```
    Description copied from class: MethodVisitor
    
    Visits a LOOKUPSWITCH instruction.
    
    Overrides:
    
    visitLookupSwitchInsn in class MethodVisitor
    
    Parameters:
    dflt - beginning of the default handler block.
    keys - the values of the keys.
    labels - beginnings of the handler blocks. labels[i] is the beginning of the handler block for the keys[i] key.
  - visitMultiANewArrayInsn
```
public void visitMultiANewArrayInsn(String desc,
                           int dims)
```
    Description copied from class: MethodVisitor
    
    Visits a MULTIANEWARRAY instruction.
    
    Overrides:
    
    visitMultiANewArrayInsn in class MethodVisitor
    
    Parameters:
    desc - an array type descriptor (see Type).
    dims - number of dimensions of the array to allocate.
  - nop
```
public void nop()
```
  - aconst
```
public void aconst(Object cst)
```
  - iconst
```
public void iconst(int cst)
```
  - lconst
```
public void lconst(long cst)
```
  - fconst
```
public void fconst(float cst)
```
  - dconst
```
public void dconst(double cst)
```
  - tconst
```
public void tconst(Type type)
```
  - hconst
```
public void hconst(Handle handle)
```
  - load
```
public void load(int var,
        Type type)
```
  - aload
```
public void aload(Type type)
```
  - store
```
public void store(int var,
         Type type)
```
  - astore
```
public void astore(Type type)
```
  - pop
```
public void pop()
```
  - pop2
```
public void pop2()
```
  - dup
```
public void dup()
```
  - dup2
```
public void dup2()
```
  - dupX1
```
public void dupX1()
```
  - dupX2
```
public void dupX2()
```
  - dup2X1
```
public void dup2X1()
```
  - dup2X2
```
public void dup2X2()
```
  - swap
```
public void swap()
```
  - add
```
public void add(Type type)
```
  - sub
```
public void sub(Type type)
```
  - mul
```
public void mul(Type type)
```
  - div
```
public void div(Type type)
```
  - rem
```
public void rem(Type type)
```
  - neg
```
public void neg(Type type)
```
  - shl
```
public void shl(Type type)
```
  - shr
```
public void shr(Type type)
```
  - ushr
```
public void ushr(Type type)
```
  - and
```
public void and(Type type)
```
  - or
```
public void or(Type type)
```
  - xor
```
public void xor(Type type)
```
  - iinc
```
public void iinc(int var,
        int increment)
```
  - cast
```
public void cast(Type from,
        Type to)
```
  - lcmp
```
public void lcmp()
```
  - cmpl
```
public void cmpl(Type type)
```
  - cmpg
```
public void cmpg(Type type)
```
  - ifeq
```
public void ifeq(Label label)
```
  - ifne
```
public void ifne(Label label)
```
  - iflt
```
public void iflt(Label label)
```
  - ifge
```
public void ifge(Label label)
```
  - ifgt
```
public void ifgt(Label label)
```
  - ifle
```
public void ifle(Label label)
```
  - ificmpeq
```
public void ificmpeq(Label label)
```
  - ificmpne
```
public void ificmpne(Label label)
```
  - ificmplt
```
public void ificmplt(Label label)
```
  - ificmpge
```
public void ificmpge(Label label)
```
  - ificmpgt
```
public void ificmpgt(Label label)
```
  - ificmple
```
public void ificmple(Label label)
```
  - ifacmpeq
```
public void ifacmpeq(Label label)
```
  - ifacmpne
```
public void ifacmpne(Label label)
```
  - goTo
```
public void goTo(Label label)
```
  - jsr
```
public void jsr(Label label)
```
  - ret
```
public void ret(int var)
```
  - tableswitch
```
public void tableswitch(int min,
               int max,
               Label dflt,
               Label... labels)
```
  - lookupswitch
```
public void lookupswitch(Label dflt,
                int[] keys,
                Label[] labels)
```
  - areturn
```
public void areturn(Type t)
```
  - getstatic
```
public void getstatic(String owner,
             String name,
             String desc)
```
  - putstatic
```
public void putstatic(String owner,
             String name,
             String desc)
```
  - getfield
```
public void getfield(String owner,
            String name,
            String desc)
```
  - putfield
```
public void putfield(String owner,
            String name,
            String desc)
```
  - invokevirtual
```
@Deprecated
public void invokevirtual(String owner,
                            String name,
                            String desc)
```
    Deprecated.
  - invokevirtual
```
public void invokevirtual(String owner,
                 String name,
                 String desc,
                 boolean itf)
```
  - invokespecial
```
@Deprecated
public void invokespecial(String owner,
                            String name,
                            String desc)
```
    Deprecated.
  - invokespecial
```
public void invokespecial(String owner,
                 String name,
                 String desc,
                 boolean itf)
```
  - invokestatic
```
@Deprecated
public void invokestatic(String owner,
                           String name,
                           String desc)
```
    Deprecated.
  - invokestatic
```
public void invokestatic(String owner,
                String name,
                String desc,
                boolean itf)
```
  - invokeinterface
```
public void invokeinterface(String owner,
                   String name,
                   String desc)
```
  - invokedynamic
```
public void invokedynamic(String name,
                 String desc,
                 Handle bsm,
                 Object[] bsmArgs)
```
  - anew
```
public void anew(Type type)
```
  - newarray
```
public void newarray(Type type)
```
  - arraylength
```
public void arraylength()
```
  - athrow
```
public void athrow()
```
  - checkcast
```
public void checkcast(Type type)
```
  - instanceOf
```
public void instanceOf(Type type)
```
  - monitorenter
```
public void monitorenter()
```
  - monitorexit
```
public void monitorexit()
```
  - multianewarray
```
public void multianewarray(String desc,
                  int dims)
```
  - ifnull
```
public void ifnull(Label label)
```
  - ifnonnull
```
public void ifnonnull(Label label)
```
  - mark
```
public void mark(Label label)
```

Class InstructionAdapter

Field Summary

Fields inherited from class org.mvel2.asm.MethodVisitor

Constructor Summary

Method Summary

Methods inherited from class org.mvel2.asm.MethodVisitor

Methods inherited from class java.lang.Object

Field Detail

OBJECT_TYPE

Constructor Detail

InstructionAdapter

InstructionAdapter

Method Detail

visitInsn

visitIntInsn

visitVarInsn

visitTypeInsn

visitFieldInsn

visitMethodInsn

visitMethodInsn

visitInvokeDynamicInsn

visitJumpInsn

visitLabel

visitLdcInsn

visitIincInsn

visitTableSwitchInsn

visitLookupSwitchInsn

visitMultiANewArrayInsn

nop

aconst

iconst

lconst

fconst

dconst

tconst

hconst

load

aload

store

astore

pop

pop2

dup

dup2

dupX1

dupX2

dup2X1

dup2X2

swap

add

sub

mul

div

rem

neg

shl

shr

ushr

and

or

xor

iinc

cast

lcmp

cmpl

cmpg

ifeq

ifne

iflt

ifge

ifgt

ifle

ificmpeq

ificmpne

ificmplt

ificmpge

ificmpgt

ificmple

ifacmpeq

ifacmpne