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org.apache.derby.iapi.services.classfile
Class ClassHolder
java.lang.Objectorg.apache.derby.iapi.services.classfile.ClassHolder
- Direct Known Subclasses:
- ClassInvestigator
- public class ClassHolder
- extends java.lang.Object
Based upon "THE class FILE FORMAT" chapter of "The Java Virtual Machine Specification" corresponding to version 1.0.2 of the Java Virtual Machine and 1.0.2 of the Java Language Specification. ISBN 0-201-63452-X, September 1996.
| Field Summary | |
protected int |
access_flags
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protected Attributes |
attribute_info
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protected java.util.Vector |
cptEntries
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private int |
cptEstimatedSize
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protected java.util.Hashtable |
cptHashTable
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protected MemberTable |
field_info
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protected int[] |
interfaces
|
protected MemberTable |
method_info
|
private CONSTANT_Index_info |
searchIndex
Used to search for index entries to avoid object allocation in the case a referecne already exists. |
protected int |
super_class
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protected int |
this_class
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| Constructor Summary | |
protected |
ClassHolder(int estimatedConstantPoolCount)
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ClassHolder(java.lang.String fullyQualifiedName,
java.lang.String superClassName,
int modifiers)
This will not define a constructor -- it is up to the caller to add at least one. |
| Method Summary | |
void |
addAttribute(java.lang.String attributeName,
ClassFormatOutput info)
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int |
addClassReference(java.lang.String fullyQualifiedName)
Add a class entry to the pool. |
private int |
addCodeUtf8(java.lang.String value)
Add a string entry |
int |
addConstant(double value)
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int |
addConstant(float value)
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int |
addConstant(int value)
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int |
addConstant(long value)
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int |
addConstant(java.lang.String value)
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private int |
addDirectEntry(ConstantPoolEntry item)
Add an entry, but only if it doesn't exist. |
protected int |
addEntry(java.lang.Object key,
ConstantPoolEntry item)
Generic add entry to constant pool. |
private CONSTANT_Utf8_info |
addExtraUtf8(java.lang.String value)
Add an extra UTF8 into the pool |
int |
addFieldReference(ClassMember field)
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int |
addFieldReference(java.lang.String className,
java.lang.String simpleName,
java.lang.String descriptor)
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private int |
addIndexReference(int tag,
int i1,
int i2)
Add an index reference. |
ClassMember |
addMember(java.lang.String simpleName,
java.lang.String descriptor,
int modifier)
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int |
addMethodReference(java.lang.String className,
java.lang.String simpleName,
java.lang.String descriptor,
boolean isInterface)
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private int |
addNameAndType(java.lang.String name,
java.lang.String descriptor)
Add a name and type entry |
private int |
addReference(int tag,
ClassMember member)
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private int |
addReference(int tag,
java.lang.String className,
java.lang.String simpleName,
java.lang.String descriptor)
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private int |
addString(java.lang.String value)
Add a string entry |
int |
addUtf8(java.lang.String value)
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private CONSTANT_Utf8_info |
addUtf8Entry(java.lang.String value)
Add a UTF8 into the pool and return the index to it. |
protected java.lang.String |
className(int classIndex)
Return the class name for an index to a CONSTANT_Class_info. |
private static java.lang.String |
convertToInternal(java.lang.String externalName,
boolean descriptor)
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static java.lang.String |
convertToInternalClassName(java.lang.String externalName)
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static java.lang.String |
convertToInternalDescriptor(java.lang.String externalName)
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protected void |
cptPut(ClassFormatOutput out)
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int |
findClass(java.lang.String fullyQualifiedName)
Find a class descriptor (section 4.4.1) and return its index, returns -1 if not found. |
protected CONSTANT_Index_info |
findIndexEntry(int tag,
int i1,
int i2)
|
protected int |
findIndexIndex(int tag,
int i1,
int i2)
|
protected ConstantPoolEntry |
findMatchingEntry(java.lang.Object key)
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int |
findNameAndType(java.lang.String name,
java.lang.String descriptor)
Find a name and type descriptor (section 4.4.6) and return it's index. |
(package private) int |
findUtf8(java.lang.String value)
Return the index of a UTF entry or -1 if it doesn't exist. |
protected java.lang.String |
getClassName(int index)
get the class name of a Class given the index of its CONSTANT_Class_info entry in the Constant Pool. |
int |
getConstantPoolIndex()
|
(package private) ConstantPoolEntry |
getEntry(int index)
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org.apache.derby.iapi.util.ByteArray |
getFileFormat()
Convert the object representation of the class into its class file format. |
int |
getModifier()
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java.lang.String |
getName()
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java.lang.String |
getSuperClassName()
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static boolean |
isExternalClassName(java.lang.String className)
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private static java.lang.String |
makeDesc(char builtin,
int arity)
A helper to build a type description based on a built-in type and an array arity. |
private static java.lang.String |
makeDesc(java.lang.String className,
int arity,
boolean descriptor)
A helper to build a type description based on a Java class and an array arity. |
(package private) java.lang.String |
nameIndexToString(int index)
get a string (UTF) given a name_index into the constant pool |
private void |
put(ClassFormatOutput out)
|
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
access_flags
protected int access_flags
this_class
protected int this_class
super_class
protected int super_class
interfaces
protected int[] interfaces
field_info
protected MemberTable field_info
method_info
protected MemberTable method_info
attribute_info
protected Attributes attribute_info
cptHashTable
protected java.util.Hashtable cptHashTable
cptEntries
protected java.util.Vector cptEntries
cptEstimatedSize
private int cptEstimatedSize
searchIndex
private final CONSTANT_Index_info searchIndex
- Used to search for index entries to avoid object allocation
in the case a referecne already exists.
| Constructor Detail |
ClassHolder
protected ClassHolder(int estimatedConstantPoolCount)
ClassHolder
public ClassHolder(java.lang.String fullyQualifiedName, java.lang.String superClassName, int modifiers)
- This will not define a constructor -- it is up
to the caller to add at least one.
| Method Detail |
put
private void put(ClassFormatOutput out) throws java.io.IOException
getFileFormat
public org.apache.derby.iapi.util.ByteArray getFileFormat() throws java.io.IOException
- Convert the object representation of the class into
its class file format.
getModifier
public int getModifier()
getName
public java.lang.String getName()
addMember
public ClassMember addMember(java.lang.String simpleName, java.lang.String descriptor, int modifier)
addFieldReference
public int addFieldReference(java.lang.String className, java.lang.String simpleName, java.lang.String descriptor)
addFieldReference
public int addFieldReference(ClassMember field)
addMethodReference
public int addMethodReference(java.lang.String className, java.lang.String simpleName, java.lang.String descriptor, boolean isInterface)
addReference
private int addReference(int tag,
java.lang.String className,
java.lang.String simpleName,
java.lang.String descriptor)
addReference
private int addReference(int tag,
ClassMember member)
addConstant
public int addConstant(java.lang.String value)
addUtf8
public int addUtf8(java.lang.String value)
addConstant
public int addConstant(int value)
addConstant
public int addConstant(float value)
addConstant
public int addConstant(long value)
addConstant
public int addConstant(double value)
getConstantPoolIndex
public int getConstantPoolIndex()
addAttribute
public void addAttribute(java.lang.String attributeName, ClassFormatOutput info)
getSuperClassName
public java.lang.String getSuperClassName()
addEntry
protected int addEntry(java.lang.Object key, ConstantPoolEntry item)
- Generic add entry to constant pool. Includes the logic
for an entry to occupy more than one slot (e.g. long).
addDirectEntry
private int addDirectEntry(ConstantPoolEntry item)
- Add an entry, but only if it doesn't exist.
addIndexReference
private int addIndexReference(int tag,
int i1,
int i2)
- Add an index reference.
addClassReference
public int addClassReference(java.lang.String fullyQualifiedName)
- Add a class entry to the pool.
addNameAndType
private int addNameAndType(java.lang.String name, java.lang.String descriptor)
- Add a name and type entry
addUtf8Entry
private CONSTANT_Utf8_info addUtf8Entry(java.lang.String value)
- Add a UTF8 into the pool and return the index to it.
addExtraUtf8
private CONSTANT_Utf8_info addExtraUtf8(java.lang.String value)
- Add an extra UTF8 into the pool
addString
private int addString(java.lang.String value)
- Add a string entry
addCodeUtf8
private int addCodeUtf8(java.lang.String value)
- Add a string entry
cptPut
protected void cptPut(ClassFormatOutput out) throws java.io.IOException
getEntry
ConstantPoolEntry getEntry(int index)
className
protected java.lang.String className(int classIndex)
- Return the class name for an index to a CONSTANT_Class_info.
findUtf8
int findUtf8(java.lang.String value)
- Return the index of a UTF entry or -1 if it doesn't exist.
findClass
public int findClass(java.lang.String fullyQualifiedName)
- Find a class descriptor (section 4.4.1) and return its
index, returns -1 if not found.
findNameAndType
public int findNameAndType(java.lang.String name, java.lang.String descriptor)
- Find a name and type descriptor (section 4.4.6) and
return it's index.
returns -1 if not found.
findIndexEntry
protected CONSTANT_Index_info findIndexEntry(int tag, int i1, int i2)
findIndexIndex
protected int findIndexIndex(int tag,
int i1,
int i2)
findMatchingEntry
protected ConstantPoolEntry findMatchingEntry(java.lang.Object key)
nameIndexToString
java.lang.String nameIndexToString(int index)
- get a string (UTF) given a name_index into the constant pool
getClassName
protected java.lang.String getClassName(int index)
- get the class name of a Class given the index of its CONSTANT_Class_info
entry in the Constant Pool.
isExternalClassName
public static boolean isExternalClassName(java.lang.String className)
convertToInternalClassName
public static java.lang.String convertToInternalClassName(java.lang.String externalName)
convertToInternalDescriptor
public static java.lang.String convertToInternalDescriptor(java.lang.String externalName)
convertToInternal
private static java.lang.String convertToInternal(java.lang.String externalName, boolean descriptor)
makeDesc
private static java.lang.String makeDesc(char builtin, int arity)
- A helper to build a type description based on a built-in type
and an array arity.
makeDesc
private static java.lang.String makeDesc(java.lang.String className, int arity, boolean descriptor)
- A helper to build a type description based on a Java class
and an array arity.
If descriptor is true create a descriptor according to
section 4.3.2 of the vm spec. If false create a class name
according to sections 4.3.2 and 4.4.1 of the vm spec.
|
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| Home >> All >> org >> apache >> derby >> iapi >> services >> [ classfile overview ] | PREV CLASS NEXT CLASS | ||||||||
|
SUMMARY: JAVADOC | SOURCE | DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||