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org.jboss.classfilewriter.constpool

public Class ConstPool

extends Object
implements WritableEntry
Class Inheritance
All Implemented Interfaces
org.jboss.classfilewriter.WritableEntry
Imports
java.io.DataOutputStream, .IOException, java.util.HashMap, .LinkedHashMap, .Map, .Map.Entry, org.jboss.classfilewriter.WritableEntry, org.jboss.classfilewriter.util.ByteArrayDataOutputStream

Nested and Inner Type Summary

Modifier and TypeClass and Description
private static class
ConstPool.MemberInfo

private static class
ConstPool.NameAndType

Field Summary

Modifier and TypeField and Description
private final Map<String, Integer>
classLocations

private Integer
constPoolSize

The constant_pool_count field of the class file format

private int
count

private final Map<Double, Integer>
doubleLocations

private final LinkedHashMap<Integer, ConstPoolEntry>
entries

private final Map<ConstPool.MemberInfo, Integer>
fieldLocations

private final Map<Float, Integer>
floatLocations

private final Map<Integer, Integer>
integerLocations

private final Map<ConstPool.MemberInfo, Integer>
interfaceMethodLocations

private final Map<Long, Integer>
longLocations

private final Map<ConstPool.MemberInfo, Integer>
methodLocations

private final Map<ConstPool.NameAndType, Integer>
nameAndTypeLocations

private final Map<String, Integer>
stringLocations

private final Map<String, Integer>
utf8Locations

Constructor Summary

AccessConstructor and Description
public
ConstPool()

Method Summary

Modifier and TypeMethod and Description
public Integer
addClassEntry(String className)

Adds a CONSTANT_Class_info to the const pool.

public Integer
addDoubleEntry(double entry)

public Integer
addFieldEntry(String className, String fieldName, String fieldType)

public Integer
addFloatEntry(float entry)

public Integer
addIntegerEntry(int entry)

public Integer
addInterfaceMethodEntry(String className, String methodName, String descriptor)

public Integer
addLongEntry(long entry)

public Integer
addMethodEntry(String className, String methodName, String descriptor)

public Integer
addNameAndTypeEntry(String name, String type)

public Integer
addStringEntry(String string)

Adds a CONSTANT_String_info to the const pool.

public Integer
addUtf8Entry(String entry)

public void
write(ByteArrayDataOutputStream stream)

Implements org.jboss.classfilewriter.WritableEntry.write.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

classLocationsback to summary
private final Map<String, Integer> classLocations
constPoolSizeback to summary
private Integer constPoolSize

The constant_pool_count field of the class file format

countback to summary
private int count
doubleLocationsback to summary
private final Map<Double, Integer> doubleLocations
entriesback to summary
private final LinkedHashMap<Integer, ConstPoolEntry> entries
fieldLocationsback to summary
private final Map<ConstPool.MemberInfo, Integer> fieldLocations
floatLocationsback to summary
private final Map<Float, Integer> floatLocations
integerLocationsback to summary
private final Map<Integer, Integer> integerLocations
interfaceMethodLocationsback to summary
private final Map<ConstPool.MemberInfo, Integer> interfaceMethodLocations
longLocationsback to summary
private final Map<Long, Integer> longLocations
methodLocationsback to summary
private final Map<ConstPool.MemberInfo, Integer> methodLocations
nameAndTypeLocationsback to summary
private final Map<ConstPool.NameAndType, Integer> nameAndTypeLocations
stringLocationsback to summary
private final Map<String, Integer> stringLocations
utf8Locationsback to summary
private final Map<String, Integer> utf8Locations

Constructor Detail

ConstPoolback to summary
public ConstPool()

Method Detail

addClassEntryback to summary
public Integer addClassEntry(String className)

Adds a CONSTANT_Class_info to the const pool. This must be in internal form

addDoubleEntryback to summary
public Integer addDoubleEntry(double entry)
addFieldEntryback to summary
public Integer addFieldEntry(String className, String fieldName, String fieldType)
addFloatEntryback to summary
public Integer addFloatEntry(float entry)
addIntegerEntryback to summary
public Integer addIntegerEntry(int entry)
addInterfaceMethodEntryback to summary
public Integer addInterfaceMethodEntry(String className, String methodName, String descriptor)
addLongEntryback to summary
public Integer addLongEntry(long entry)
addMethodEntryback to summary
public Integer addMethodEntry(String className, String methodName, String descriptor)
addNameAndTypeEntryback to summary
public Integer addNameAndTypeEntry(String name, String type)
addStringEntryback to summary
public Integer addStringEntry(String string)

Adds a CONSTANT_String_info to the const pool.

addUtf8Entryback to summary
public Integer addUtf8Entry(String entry)
writeback to summary
public void write(ByteArrayDataOutputStream stream) throws IOException

Implements org.jboss.classfilewriter.WritableEntry.write.

org.jboss.classfilewriter.constpool back to summary

private Class ConstPool.MemberInfo

extends Object
Class Inheritance

Field Summary

Modifier and TypeField and Description
private final String
className

private final ConstPool.NameAndType
nameAndType

Constructor Summary

AccessConstructor and Description
public
MemberInfo(String className, ConstPool.NameAndType nameAndType)

Method Summary

Modifier and TypeMethod and Description
public boolean
equals(Object
the reference object with which to compare.
obj)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.
public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for the object.
Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

classNameback to summary
private final String className
nameAndTypeback to summary
private final ConstPool.NameAndType nameAndType

Constructor Detail

MemberInfoback to summary
public MemberInfo(String className, ConstPool.NameAndType nameAndType)

Method Detail

equalsback to summary
public boolean equals(Object obj)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
obj:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object.

Annotations
@Override
org.jboss.classfilewriter.constpool back to summary

private final Class ConstPool.NameAndType

extends Object
Class Inheritance

Field Summary

Modifier and TypeField and Description
private final String
name

private final String
type

Constructor Summary

AccessConstructor and Description
public
NameAndType(String name, String type)

Method Summary

Modifier and TypeMethod and Description
public boolean
equals(Object
the reference object with which to compare.
obj)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.
public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for the object.
Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

nameback to summary
private final String name
typeback to summary
private final String type

Constructor Detail

NameAndTypeback to summary
public NameAndType(String name, String type)

Method Detail

equalsback to summary
public boolean equals(Object obj)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
obj:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object.

Annotations
@Override