org.evosuite.instrumentation.testability.transformer

Class MethodNodeTransformer

java.lang.Object

org.evosuite.instrumentation.testability.transformer.MethodNodeTransformer

Direct Known Subclasses:

BitwiseOperatorTransformer, BooleanArrayIndexTransformer, BooleanArrayTransformer, BooleanCallsTransformer, BooleanDefinitionTransformer, BooleanDistanceTransformer, BooleanIfTransformer, BooleanReturnTransformer, ImplicitElseTransformer, InstanceOfTransformer

public class MethodNodeTransformer
extends Object

MethodNodeTransformer class.

Author:

Gordon Fraser

Field Summary

Fields

Modifier and Type	Field and Description
protected int	firstLocal Index of the first local variable, after formal parameters.
protected List<org.objectweb.asm.Type>	localTypes Types of the local variables of the method visited by this adapter.
protected int[]	mapping Mapping from old to new local variable indexes.
protected Object[]	newLocals Array used to store stack map local variable types after remapping.
protected int	nextLocal Index of the next local variable to be created by newLocal(org.objectweb.asm.Type).
protected Map<Integer,Integer>	parameterToLocalMap

Constructor Summary

Constructors

Constructor and Description
MethodNodeTransformer()

Method Summary

Modifier and Type	Method and Description
org.objectweb.asm.Type	getLocalType(int local) Returns the type of the given local variable.
void	loadLocal(int local) Generates the instruction to load the given local variable on the stack.
int	newLocal(org.objectweb.asm.Type type) Creates a new local variable of the given type.
protected int	newLocalMapping(org.objectweb.asm.Type type)
protected void	popParametersToLocals(org.objectweb.asm.tree.MethodNode mn)
protected void	pushParametersToLocals(org.objectweb.asm.tree.MethodNode mn)
protected void	setLocalType(int local, org.objectweb.asm.Type type) Notifies subclasses that a local variable has been added or remapped.
protected void	setupLocals(org.objectweb.asm.tree.MethodNode mn)
void	storeLocal(int local) Generates the instruction to store the top stack value in the given local variable.
void	transform(org.objectweb.asm.tree.MethodNode mn) transform
protected org.objectweb.asm.tree.AbstractInsnNode	transformFieldInsnNode(org.objectweb.asm.tree.MethodNode mn, org.objectweb.asm.tree.FieldInsnNode fieldNode) transformFieldInsnNode
protected org.objectweb.asm.tree.AbstractInsnNode	transformInsnNode(org.objectweb.asm.tree.MethodNode mn, org.objectweb.asm.tree.InsnNode insnNode) transformInsnNode
protected org.objectweb.asm.tree.AbstractInsnNode	transformIntInsnNode(org.objectweb.asm.tree.MethodNode mn, org.objectweb.asm.tree.IntInsnNode intInsnNode) transformIntInsnNode
protected org.objectweb.asm.tree.AbstractInsnNode	transformJumpInsnNode(org.objectweb.asm.tree.MethodNode mn, org.objectweb.asm.tree.JumpInsnNode jumpNode) transformJumpInsnNode
protected org.objectweb.asm.tree.AbstractInsnNode	transformLabelNode(org.objectweb.asm.tree.MethodNode mn, org.objectweb.asm.tree.LabelNode labelNode) transformLabelNode
protected org.objectweb.asm.tree.AbstractInsnNode	transformMethodInsnNode(org.objectweb.asm.tree.MethodNode mn, org.objectweb.asm.tree.MethodInsnNode methodNode) transformMethodInsnNode
protected org.objectweb.asm.tree.AbstractInsnNode	transformMultiANewArrayInsnNode(org.objectweb.asm.tree.MethodNode mn, org.objectweb.asm.tree.MultiANewArrayInsnNode arrayInsnNode) transformMultiANewArrayInsnNode
protected org.objectweb.asm.tree.AbstractInsnNode	transformTypeInsnNode(org.objectweb.asm.tree.MethodNode mn, org.objectweb.asm.tree.TypeInsnNode typeNode) transformTypeInsnNode
protected org.objectweb.asm.tree.AbstractInsnNode	transformVarInsnNode(org.objectweb.asm.tree.MethodNode mn, org.objectweb.asm.tree.VarInsnNode varNode) transformVarInsnNode

Methods inherited from class java.lang.Object

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

Field Detail

mapping

protected int[] mapping

Mapping from old to new local variable indexes. A local variable at index i of size 1 is remapped to 'mapping[2*i]', while a local variable at index i of size 2 is remapped to 'mapping[2*i+1]'.

newLocals

protected Object[] newLocals

Array used to store stack map local variable types after remapping.

firstLocal

protected int firstLocal

Index of the first local variable, after formal parameters.

nextLocal

protected int nextLocal

Index of the next local variable to be created by newLocal(org.objectweb.asm.Type).

localTypes

protected final List<org.objectweb.asm.Type> localTypes

Types of the local variables of the method visited by this adapter.

parameterToLocalMap

protected Map<Integer,Integer> parameterToLocalMap

Constructor Detail

MethodNodeTransformer

public MethodNodeTransformer()

Method Detail

transform

public void transform(org.objectweb.asm.tree.MethodNode mn)

transform

Parameters:

mn - a MethodNode object.

transformMethodInsnNode

protected org.objectweb.asm.tree.AbstractInsnNode transformMethodInsnNode(org.objectweb.asm.tree.MethodNode mn,
                                                                          org.objectweb.asm.tree.MethodInsnNode methodNode)

transformMethodInsnNode

Parameters:

mn - a MethodNode object.

methodNode - a MethodInsnNode object.

Returns:

a AbstractInsnNode object.

transformVarInsnNode

protected org.objectweb.asm.tree.AbstractInsnNode transformVarInsnNode(org.objectweb.asm.tree.MethodNode mn,
                                                                       org.objectweb.asm.tree.VarInsnNode varNode)

transformVarInsnNode

Parameters:

mn - a MethodNode object.

varNode - a VarInsnNode object.

Returns:

a AbstractInsnNode object.

transformFieldInsnNode

protected org.objectweb.asm.tree.AbstractInsnNode transformFieldInsnNode(org.objectweb.asm.tree.MethodNode mn,
                                                                         org.objectweb.asm.tree.FieldInsnNode fieldNode)

transformFieldInsnNode

Parameters:

mn - a MethodNode object.

fieldNode - a FieldInsnNode object.

Returns:

a AbstractInsnNode object.

transformInsnNode

protected org.objectweb.asm.tree.AbstractInsnNode transformInsnNode(org.objectweb.asm.tree.MethodNode mn,
                                                                    org.objectweb.asm.tree.InsnNode insnNode)

transformInsnNode

Parameters:

mn - a MethodNode object.

insnNode - a InsnNode object.

Returns:

a AbstractInsnNode object.

transformTypeInsnNode

protected org.objectweb.asm.tree.AbstractInsnNode transformTypeInsnNode(org.objectweb.asm.tree.MethodNode mn,
                                                                        org.objectweb.asm.tree.TypeInsnNode typeNode)

transformTypeInsnNode

Parameters:

mn - a MethodNode object.

typeNode - a TypeInsnNode object.

Returns:

a AbstractInsnNode object.

transformJumpInsnNode

protected org.objectweb.asm.tree.AbstractInsnNode transformJumpInsnNode(org.objectweb.asm.tree.MethodNode mn,
                                                                        org.objectweb.asm.tree.JumpInsnNode jumpNode)

transformJumpInsnNode

Parameters:

mn - a MethodNode object.

jumpNode - a JumpInsnNode object.

Returns:

a AbstractInsnNode object.

transformLabelNode

protected org.objectweb.asm.tree.AbstractInsnNode transformLabelNode(org.objectweb.asm.tree.MethodNode mn,
                                                                     org.objectweb.asm.tree.LabelNode labelNode)

transformLabelNode

Parameters:

mn - a MethodNode object.

labelNode - a LabelNode object.

Returns:

a AbstractInsnNode object.

transformIntInsnNode

protected org.objectweb.asm.tree.AbstractInsnNode transformIntInsnNode(org.objectweb.asm.tree.MethodNode mn,
                                                                       org.objectweb.asm.tree.IntInsnNode intInsnNode)

transformIntInsnNode

Parameters:

mn - a MethodNode object.

intInsnNode - a IntInsnNode object.

Returns:

a AbstractInsnNode object.

transformMultiANewArrayInsnNode

protected org.objectweb.asm.tree.AbstractInsnNode transformMultiANewArrayInsnNode(org.objectweb.asm.tree.MethodNode mn,
                                                                                  org.objectweb.asm.tree.MultiANewArrayInsnNode arrayInsnNode)

transformMultiANewArrayInsnNode

Parameters:

mn - a MethodNode object.

arrayInsnNode - a MultiANewArrayInsnNode object.

Returns:

a AbstractInsnNode object.

setupLocals

protected void setupLocals(org.objectweb.asm.tree.MethodNode mn)

storeLocal

public void storeLocal(int local)

Generates the instruction to store the top stack value in the given local variable.

Parameters:

local - a local variable identifier, as returned by newLocal().

loadLocal

public void loadLocal(int local)

Generates the instruction to load the given local variable on the stack.

Parameters:

local - a local variable identifier, as returned by newLocal().

getLocalType

public org.objectweb.asm.Type getLocalType(int local)

Returns the type of the given local variable.

Parameters:

local - a local variable identifier, as returned by newLocal().

Returns:

the type of the given local variable.

newLocal

public int newLocal(org.objectweb.asm.Type type)

Creates a new local variable of the given type.

Parameters:

type - the type of the local variable to be created.

Returns:

the identifier of the newly created local variable.

newLocalMapping

protected int newLocalMapping(org.objectweb.asm.Type type)

setLocalType

protected void setLocalType(int local,
                            org.objectweb.asm.Type type)

Notifies subclasses that a local variable has been added or remapped. The default implementation of this method does nothing.

Parameters:

local - a local variable identifier, as returned by newLocal().

type - the type of the value being stored in the local variable.

popParametersToLocals

protected void popParametersToLocals(org.objectweb.asm.tree.MethodNode mn)

pushParametersToLocals

protected void pushParametersToLocals(org.objectweb.asm.tree.MethodNode mn)