Package org.objectweb.asm.commons
Class CodeSizeEvaluator
- java.lang.Object
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- org.objectweb.asm.MethodVisitor
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- org.objectweb.asm.commons.CodeSizeEvaluator
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- All Implemented Interfaces:
Opcodes
public class CodeSizeEvaluator extends MethodVisitor implements Opcodes
AMethodVisitor
that approximates the size of the methods it visits.
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Field Summary
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Fields inherited from class org.objectweb.asm.MethodVisitor
api, mv
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Fields inherited from interface org.objectweb.asm.Opcodes
AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_MODULE, ACC_NATIVE, ACC_OPEN, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STATIC_PHASE, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_TRANSITIVE, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM4, ASM5, ASM6, ASM7, 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, V_PREVIEW, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7, V1_8, V10, V11, V12, V9
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Constructor Summary
Constructors Modifier Constructor Description protected
CodeSizeEvaluator(int api, MethodVisitor methodVisitor)
CodeSizeEvaluator(MethodVisitor methodVisitor)
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description int
getMaxSize()
int
getMinSize()
void
visitFieldInsn(int opcode, String owner, String name, String descriptor)
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 descriptor, Handle bootstrapMethodHandle, Object... bootstrapMethodArguments)
Visits an invokedynamic instruction.void
visitJumpInsn(int opcode, Label label)
Visits a jump instruction.void
visitLdcInsn(Object value)
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 descriptor)
Deprecated.void
visitMethodInsn(int opcode, String owner, String name, String descriptor, boolean isInterface)
Visits a method instruction.void
visitMultiANewArrayInsn(String descriptor, int numDimensions)
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.objectweb.asm.MethodVisitor
visitAnnotableParameterCount, visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitEnd, visitFrame, visitInsnAnnotation, visitLabel, visitLineNumber, visitLocalVariable, visitLocalVariableAnnotation, visitMaxs, visitParameter, visitParameterAnnotation, visitTryCatchAnnotation, visitTryCatchBlock, visitTypeAnnotation
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Constructor Detail
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CodeSizeEvaluator
public CodeSizeEvaluator(MethodVisitor methodVisitor)
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CodeSizeEvaluator
protected CodeSizeEvaluator(int api, MethodVisitor methodVisitor)
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Method Detail
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getMinSize
public int getMinSize()
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getMaxSize
public int getMaxSize()
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visitInsn
public void visitInsn(int opcode)
Description copied from class:MethodVisitor
Visits a zero operand instruction.- Overrides:
visitInsn
in classMethodVisitor
- 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.
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visitIntInsn
public void visitIntInsn(int opcode, int operand)
Description copied from class:MethodVisitor
Visits an instruction with a single int operand.- Overrides:
visitIntInsn
in classMethodVisitor
- 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 ofOpcodes.T_BOOLEAN
,Opcodes.T_CHAR
,Opcodes.T_FLOAT
,Opcodes.T_DOUBLE
,Opcodes.T_BYTE
,Opcodes.T_SHORT
,Opcodes.T_INT
orOpcodes.T_LONG
.
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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 classMethodVisitor
- 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.
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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 classMethodVisitor
- 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 (seeType.getInternalName()
).
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visitFieldInsn
public void visitFieldInsn(int opcode, String owner, String name, String descriptor)
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 classMethodVisitor
- 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 (seeType.getInternalName()
).name
- the field's name.descriptor
- the field's descriptor (seeType
).
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visitMethodInsn
@Deprecated public void visitMethodInsn(int opcode, String owner, String name, String descriptor)
Deprecated.Deprecated.- Overrides:
visitMethodInsn
in classMethodVisitor
- 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 (seeType.getInternalName()
).name
- the method's name.descriptor
- the method's descriptor (seeType
).
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visitMethodInsn
public void visitMethodInsn(int opcode, String owner, String name, String descriptor, boolean isInterface)
Description copied from class:MethodVisitor
Visits a method instruction. A method instruction is an instruction that invokes a method.- Overrides:
visitMethodInsn
in classMethodVisitor
- 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 (seeType.getInternalName()
).name
- the method's name.descriptor
- the method's descriptor (seeType
).isInterface
- if the method's owner class is an interface.
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visitInvokeDynamicInsn
public void visitInvokeDynamicInsn(String name, String descriptor, Handle bootstrapMethodHandle, Object... bootstrapMethodArguments)
Description copied from class:MethodVisitor
Visits an invokedynamic instruction.- Overrides:
visitInvokeDynamicInsn
in classMethodVisitor
- Parameters:
name
- the method's name.descriptor
- the method's descriptor (seeType
).bootstrapMethodHandle
- the bootstrap method.bootstrapMethodArguments
- the bootstrap method constant arguments. Each argument must be anInteger
,Float
,Long
,Double
,String
,Type
,Handle
orConstantDynamic
value. This method is allowed to modify the content of the array so a caller should expect that this array may change.
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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 classMethodVisitor
- 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.
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visitLdcInsn
public void visitLdcInsn(Object value)
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 if (cst instanceof ConstantDynamic) { // ... } else { // throw an exception }
- Overrides:
visitLdcInsn
in classMethodVisitor
- Parameters:
value
- the constant to be loaded on the stack. This parameter must be a non nullInteger
, aFloat
, aLong
, aDouble
, aString
, aType
of OBJECT or ARRAY sort for.class
constants, for classes whose version is 49, aType
of METHOD sort for MethodType, aHandle
for MethodHandle constants, for classes whose version is 51 or aConstantDynamic
for a constant dynamic for classes whose version is 55.
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visitIincInsn
public void visitIincInsn(int var, int increment)
Description copied from class:MethodVisitor
Visits an IINC instruction.- Overrides:
visitIincInsn
in classMethodVisitor
- Parameters:
var
- index of the local variable to be incremented.increment
- amount to increment the local variable by.
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visitTableSwitchInsn
public void visitTableSwitchInsn(int min, int max, Label dflt, Label... labels)
Description copied from class:MethodVisitor
Visits a TABLESWITCH instruction.- Overrides:
visitTableSwitchInsn
in classMethodVisitor
- 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 themin + i
key.
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visitLookupSwitchInsn
public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)
Description copied from class:MethodVisitor
Visits a LOOKUPSWITCH instruction.- Overrides:
visitLookupSwitchInsn
in classMethodVisitor
- 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 thekeys[i]
key.
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visitMultiANewArrayInsn
public void visitMultiANewArrayInsn(String descriptor, int numDimensions)
Description copied from class:MethodVisitor
Visits a MULTIANEWARRAY instruction.- Overrides:
visitMultiANewArrayInsn
in classMethodVisitor
- Parameters:
descriptor
- an array type descriptor (seeType
).numDimensions
- the number of dimensions of the array to allocate.
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