Class ConstantPoolEntry
- java.lang.Object
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- org.apache.tools.ant.taskdefs.optional.depend.constantpool.ConstantPoolEntry
 
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- Direct Known Subclasses:
- ClassCPInfo,- ConstantCPInfo,- FieldRefCPInfo,- InterfaceMethodRefCPInfo,- MethodHandleCPInfo,- MethodRefCPInfo,- NameAndTypeCPInfo,- Utf8CPInfo
 
 public abstract class ConstantPoolEntry extends java.lang.ObjectAn entry in the constant pool. This class contains a representation of the constant pool entries. It is an abstract base class for all the different forms of constant pool entry.- See Also:
- ConstantPool
 
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Field SummaryFields Modifier and Type Field Description static intCONSTANT_CLASSTag value for Class entries.static intCONSTANT_DOUBLETag value for Double entries.static intCONSTANT_FIELDREFTag value for Field Reference entries.static intCONSTANT_FLOATTag value for Float entries.static intCONSTANT_INTEGERTag value for Integer entries.static intCONSTANT_INTERFACEMETHODREFTag value for Interface Method Reference entries.static intCONSTANT_INVOKEDYNAMICTag value for InvokeDynamic entriesstatic intCONSTANT_LONGTag value for Long entries.static intCONSTANT_METHODHANDLETag value for Method Handle entriesstatic intCONSTANT_METHODREFTag value for Method Reference entries.static intCONSTANT_METHODTYPETag value for Method Type entriesstatic intCONSTANT_MODULEINFOTag value for CONSTANT_Module_info entrystatic intCONSTANT_NAMEANDTYPETag value for Name and Type entries.static intCONSTANT_PACKAGEINFOTag value for CONSTANT_Package_info entry (within a module)static intCONSTANT_STRINGTag value for String entries.static intCONSTANT_UTF8Tag value for UTF8 entries.
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Constructor SummaryConstructors Constructor Description ConstantPoolEntry(int tagValue, int entries)Initialise the constant pool entry.
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Method SummaryModifier and Type Method Description intgetNumEntries()Get the number of Constant Pool Entry slots within the constant pool occupied by this entry.intgetTag()Get the Entry's type tag.booleanisResolved()Indicates whether this entry has been resolved.abstract voidread(java.io.DataInputStream cpStream)read a constant pool entry from a class stream.static ConstantPoolEntryreadEntry(java.io.DataInputStream cpStream)Read a constant pool entry from a stream.voidresolve(ConstantPool constantPool)Resolve this constant pool entry with respect to its dependents in the constant pool.
 
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Field Detail- 
CONSTANT_UTF8public static final int CONSTANT_UTF8 Tag value for UTF8 entries.- See Also:
- Constant Field Values
 
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CONSTANT_INTEGERpublic static final int CONSTANT_INTEGER Tag value for Integer entries.- See Also:
- Constant Field Values
 
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CONSTANT_FLOATpublic static final int CONSTANT_FLOAT Tag value for Float entries.- See Also:
- Constant Field Values
 
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CONSTANT_LONGpublic static final int CONSTANT_LONG Tag value for Long entries.- See Also:
- Constant Field Values
 
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CONSTANT_DOUBLEpublic static final int CONSTANT_DOUBLE Tag value for Double entries.- See Also:
- Constant Field Values
 
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CONSTANT_CLASSpublic static final int CONSTANT_CLASS Tag value for Class entries.- See Also:
- Constant Field Values
 
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CONSTANT_STRINGpublic static final int CONSTANT_STRING Tag value for String entries.- See Also:
- Constant Field Values
 
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CONSTANT_FIELDREFpublic static final int CONSTANT_FIELDREF Tag value for Field Reference entries.- See Also:
- Constant Field Values
 
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CONSTANT_METHODREFpublic static final int CONSTANT_METHODREF Tag value for Method Reference entries.- See Also:
- Constant Field Values
 
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CONSTANT_INTERFACEMETHODREFpublic static final int CONSTANT_INTERFACEMETHODREF Tag value for Interface Method Reference entries.- See Also:
- Constant Field Values
 
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CONSTANT_NAMEANDTYPEpublic static final int CONSTANT_NAMEANDTYPE Tag value for Name and Type entries.- See Also:
- Constant Field Values
 
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CONSTANT_METHODHANDLEpublic static final int CONSTANT_METHODHANDLE Tag value for Method Handle entries- See Also:
- Constant Field Values
 
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CONSTANT_METHODTYPEpublic static final int CONSTANT_METHODTYPE Tag value for Method Type entries- See Also:
- Constant Field Values
 
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CONSTANT_INVOKEDYNAMICpublic static final int CONSTANT_INVOKEDYNAMIC Tag value for InvokeDynamic entries- See Also:
- Constant Field Values
 
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CONSTANT_MODULEINFOpublic static final int CONSTANT_MODULEINFO Tag value for CONSTANT_Module_info entry- See Also:
- Constant Field Values
 
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CONSTANT_PACKAGEINFOpublic static final int CONSTANT_PACKAGEINFO Tag value for CONSTANT_Package_info entry (within a module)- See Also:
- Constant Field Values
 
 
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Method Detail- 
readEntrypublic static ConstantPoolEntry readEntry(java.io.DataInputStream cpStream) throws java.io.IOException Read a constant pool entry from a stream. This is a factory method which reads a constant pool entry form a stream and returns the appropriate subclass for the entry.- Parameters:
- cpStream- the stream from which the constant pool entry is to be read.
- Returns:
- the appropriate ConstantPoolEntry subclass representing the constant pool entry from the stream.
- Throws:
- java.io.IOException- if the constant pool entry cannot be read from the stream
 
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isResolvedpublic boolean isResolved() Indicates whether this entry has been resolved. In general a constant pool entry can reference another constant pool entry by its index value. Resolution involves replacing this index value with the constant pool entry at that index.- Returns:
- true if this entry has been resolved.
 
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resolvepublic void resolve(ConstantPool constantPool) Resolve this constant pool entry with respect to its dependents in the constant pool.- Parameters:
- constantPool- the constant pool of which this entry is a member and against which this entry is to be resolved.
 
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readpublic abstract void read(java.io.DataInputStream cpStream) throws java.io.IOExceptionread a constant pool entry from a class stream.- Parameters:
- cpStream- the DataInputStream which contains the constant pool entry to be read.
- Throws:
- java.io.IOException- if there is a problem reading the entry from the stream.
 
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getTagpublic int getTag() Get the Entry's type tag.- Returns:
- The Tag value of this entry
 
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getNumEntriespublic final int getNumEntries() Get the number of Constant Pool Entry slots within the constant pool occupied by this entry.- Returns:
- the number of slots used.
 
 
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