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java.lang.Objectjef.dna.attributes.impl.ExceptionTableEntry
@ContainedInCodeAttribute(containerPropertyName="attributeContainer") public class ExceptionTableEntry
Class representing an ExceptionTable
generic entry. These entries describe the
exception handlers behaviour in the code array of a Code
attribute. An entry is
made up of four elements: start_pc, end_pc, handler_pc, catch_type
. These entries
are stored within a Code
attribute ExceptionTable
.
Field Summary | |
---|---|
protected static Logger |
logger
|
Constructor Summary | |
---|---|
ExceptionTableEntry()
Constructor. |
Method Summary | |
---|---|
java.lang.Object |
clone()
The clone() method will return a new instance whose reference to the
containing CodeAttribute is not modified. |
void |
fromStream(java.io.DataInputStream dis)
Reads the entry from the given inputstream. |
CodeAttribute |
getAttributeContainer()
Get the reference to the CodeAttribute this ExceptionTableEntry
is held by. |
int |
getBytesCount()
This method must return the overall number of bytes required by the component implementing this interface. |
int |
getCatchType()
If the value of type is non zero, it must refer to an entry of the constant
pool table of type ConstantClass (ConstantClassInfo ). |
int |
getEndPc()
Gets the index at which the exception handler becomes inactive. |
int |
getHandlerPc()
Gets the start of the exception handler. |
int |
getStartPc()
Gets the index at which the exception handler begins being active. |
void |
setAttributeContainer(CodeAttribute attribute)
Set the reference to the CodeAttribute this ExceptionTableEntry
is held by. |
void |
setCatchType(int type)
If the value of type is non zero, it must refer to an entry of the constant
pool table of type ConstantClass (ConstantClassInfo ). |
void |
setEndPc(int end)
Sets the index at which the exception handler becomes inactive. |
void |
setHandlerPc(int handler)
Sets the start of the exception handler. |
void |
setStartPc(int start)
Sets the index at which the exception handler begins being active. |
void |
toStream(java.io.DataOutputStream dos)
Writes this entry to the given output stream. |
void |
updateRefs(int offset)
Updates all the reference to the constant pool table |
boolean |
validate()
This method has to perform a validation process over the ExceptionTableEntry
according to what specified by the JVM Official Specification. |
Methods inherited from class java.lang.Object |
---|
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
protected static Logger logger
Constructor Detail |
---|
public ExceptionTableEntry()
fromStream
method. Appropriate getters and setters are provided as well.
Method Detail |
---|
public void setStartPc(int start)
code array of Code
attribute
instance.
- Specified by:
setStartPc
in interface ExceptionTableEntry
- Parameters:
start
- The index at which the exc. handler becomes active
getStartPc
public int getStartPc()
- Gets the index at which the exception handler begins being active. This value has to be a
valid index into the
code array of Code
attribute
instance.
- Specified by:
getStartPc
in interface ExceptionTableEntry
- Returns:
- int The index at which the exc. handler becomes active
setEndPc
public void setEndPc(int end)
- Sets the index at which the exception handler becomes inactive. This value has to be a valid
index into the
code array of Code
attribute
instance.
- Specified by:
setEndPc
in interface ExceptionTableEntry
- Parameters:
end
- The index at which the exc. handler gets deactivated
getEndPc
public int getEndPc()
- Gets the index at which the exception handler becomes inactive. This value has to be a valid
index into the
code array of Code
attribute
instance.
- Specified by:
getEndPc
in interface ExceptionTableEntry
- Returns:
- int The index at which the exc. handler gets deactivated
setHandlerPc
public void setHandlerPc(int handler)
- Sets the start of the exception handler. This value has to be a valid index into the
code array of Code
attribute
instance.
- Specified by:
setHandlerPc
in interface ExceptionTableEntry
- Parameters:
handler
- The start of the exception handler
getHandlerPc
public int getHandlerPc()
- Gets the start of the exception handler. This value has to be a valid index into the
code array of Code
attribute
instance.
- Specified by:
getHandlerPc
in interface ExceptionTableEntry
- Returns:
- int The start of the exception handler
setCatchType
public void setCatchType(int type)
- If the value of
type
is non zero, it must refer to an entry of the constant
pool table of type ConstantClass
(ConstantClassInfo
).
- Specified by:
setCatchType
in interface ExceptionTableEntry
- Parameters:
type
- Valid index into the constant pool table
getCatchType
public int getCatchType()
- If the value of
type
is non zero, it must refer to an entry of the constant
pool table of type ConstantClass
(ConstantClassInfo
).
- Specified by:
getCatchType
in interface ExceptionTableEntry
- Returns:
- int Valid index into the constant pool table
setAttributeContainer
public void setAttributeContainer(CodeAttribute attribute)
- Description copied from interface:
ExceptionTableEntry
- Set the reference to the
CodeAttribute
this ExceptionTableEntry
is held by.
- Specified by:
setAttributeContainer
in interface ExceptionTableEntry
- Parameters:
attribute
- The CodeAttribute
container
getAttributeContainer
public CodeAttribute getAttributeContainer()
- Description copied from interface:
ExceptionTableEntry
- Get the reference to the
CodeAttribute
this ExceptionTableEntry
is held by.
- Specified by:
getAttributeContainer
in interface ExceptionTableEntry
- Returns:
- CodeAttribute The
CodeAttribute
container
toStream
public void toStream(java.io.DataOutputStream dos)
throws java.io.IOException
- Writes this entry to the given output stream.
- Specified by:
toStream
in interface ExceptionTableEntry
- Parameters:
dos
- Output stream to write the entry to
- Throws:
java.io.IOException
- Thrown should something go wrong with the provided output stream
fromStream
public void fromStream(java.io.DataInputStream dis)
throws java.io.IOException
- Reads the entry from the given inputstream.
- Specified by:
fromStream
in interface ExceptionTableEntry
- Parameters:
dis
- Input stream to read the entry from
- Throws:
java.io.IOException
- Thrown should something go wrong with the provided input stream
updateRefs
public void updateRefs(int offset)
- Updates all the reference to the constant pool table
- Specified by:
updateRefs
in interface ExceptionTableEntry
- Parameters:
offset
- The offset to be applied
validate
public boolean validate()
throws ExceptionTableEntryValidationException,
MissingDnaContainerException,
MissingAttributeContainerException,
MissingCPTableException
- Description copied from interface:
ExceptionTableEntry
- This method has to perform a validation process over the
ExceptionTableEntry
according to what specified by the JVM Official Specification.
- Specified by:
validate
in interface ExceptionTableEntry
- Returns:
- boolean The validation outcome
- Throws:
ExceptionTableEntryValidationException
- The validation failed
MissingDnaContainerException
- Is missing the reference to the Dna
instance this
ExceptionTableEntry
belongs to
MissingAttributeContainerException
- Is missing the reference to the Attribute
this
ExceptionTableEntry
belongs to
MissingCPTableException
- Cannot access the constant pool table
clone
public java.lang.Object clone()
throws java.lang.CloneNotSupportedException
- The
clone()
method will return a new instance whose reference to the
containing CodeAttribute
is not modified.
- Specified by:
clone
in interface ExceptionTableEntry
- Overrides:
clone
in class java.lang.Object
- Throws:
java.lang.CloneNotSupportedException
getBytesCount
public int getBytesCount()
- Description copied from interface:
BytesCountable
- This method must return the overall number of bytes
required by the component implementing this interface.
- Specified by:
getBytesCount
in interface BytesCountable
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