CodeSizeEvaluator (mvel 2.2.4.Final API)

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

All Implemented Interfaces:

Opcodes
```
public class CodeSizeEvaluator
extends MethodVisitor
implements Opcodes
```
A MethodVisitor that can be used to approximate method size.

Author:

Eugene Kuleshov

Field Summary
- Fields inherited from class org.mvel2.asm.MethodVisitor
  api, mv
- Fields inherited from interface org.mvel2.asm.Opcodes
  AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM4, ASM5, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, 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, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8

Constructor Summary

Constructors
Modifier Constructor and Description

protected CodeSizeEvaluator(int api, MethodVisitor mv)

CodeSizeEvaluator(MethodVisitor mv)

Constructors
Modifier	Constructor and Description
`protected`	`CodeSizeEvaluator(int api, MethodVisitor mv)`
	`CodeSizeEvaluator(MethodVisitor mv)`

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`getMaxSize()`
`int`	`getMinSize()`
`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`	`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.

Methods inherited from class org.mvel2.asm.MethodVisitor
visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitEnd, visitFrame, visitInsnAnnotation, visitLabel, 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

- Constructor Detail
  - CodeSizeEvaluator
```
public CodeSizeEvaluator(MethodVisitor mv)
```
  - CodeSizeEvaluator
```
protected CodeSizeEvaluator(int api,
                 MethodVisitor mv)
```
- Method Detail
  - getMinSize
```
public int getMinSize()
```
  - getMaxSize
```
public int getMaxSize()
```
  - 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.
  - 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.

Class CodeSizeEvaluator

Field Summary

Fields inherited from class org.mvel2.asm.MethodVisitor

Fields inherited from interface org.mvel2.asm.Opcodes

Constructor Summary

Method Summary

Methods inherited from class org.mvel2.asm.MethodVisitor

Methods inherited from class java.lang.Object

Constructor Detail

CodeSizeEvaluator

CodeSizeEvaluator

Method Detail

getMinSize

getMaxSize

visitInsn

visitIntInsn

visitVarInsn

visitTypeInsn

visitFieldInsn

visitMethodInsn

visitMethodInsn

visitInvokeDynamicInsn

visitJumpInsn

visitLdcInsn

visitIincInsn

visitTableSwitchInsn

visitLookupSwitchInsn

visitMultiANewArrayInsn