nz.net.juju.jaune
Class Support

java.lang.Object
  |
  +--nz.net.juju.jaune.Support

public class Support

extends java.lang.Object

The support class provides static helper methods to the rest of the compiler including mapping methods to labels, locating methods, and finding definitions and implementations of methods. RETARGET: The label formats depend on the target.

Field Summary

static java.lang.String

LABEL_CLASS Suffix for the class label.

Constructor Summary

Support()

Method Summary

static gnu.bytecode.Method	findDefinition(gnu.bytecode.ClassType ctype, gnu.bytecode.CpoolNameAndType cmethod) Finds the first definition of the given method in the class heirachy.
static gnu.bytecode.Method	findDefinition(gnu.bytecode.Method method) Finds the first definition of the given method in the class heirachy.
static gnu.bytecode.Method	findImplementation(gnu.bytecode.ClassType ctype, gnu.bytecode.CpoolNameAndType cmethod) Finds the most recent implementation of the given method.
static gnu.bytecode.Method	findImplementation(gnu.bytecode.ClassType ctype, gnu.bytecode.Method method) Finds the most recent implementation of the given method.
static int	getFieldId(gnu.bytecode.Field meth) Returns the unique global field ID for this field.
static java.lang.String	getLabel(gnu.bytecode.ClassType cl) Returns the unqiue string label for this class.
static java.lang.String	getLabel(gnu.bytecode.Field field) Returns the unique label for this field.
static java.lang.String	getLabel(gnu.bytecode.Method meth) Returns the unique label for this method.
static int	getMethodId(gnu.bytecode.Method meth) Returns the unique global method ID for this method.
static java.lang.String	getSpecialLabel(gnu.bytecode.ClassType classType, java.lang.String special) Returns the unique label for a special method such as init, clinit in this class.

Methods inherited from class java.lang.Object

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

Field Detail

LABEL_CLASS

public static final java.lang.String LABEL_CLASS

Suffix for the class label.

Constructor Detail

Support

public Support()

Method Detail

getLabel

public static java.lang.String getLabel(gnu.bytecode.ClassType cl)

Returns the unqiue string label for this class.

getLabel

public static java.lang.String getLabel(gnu.bytecode.Method meth)

Returns the unique label for this method. A label is of the form: {PREFIX}{Normalised-Class}{SEP|SPECIAL}{Method}{Overload-ID} where

• PREFIX is _
• Normalised-Class is the short form of the package name plus the class name
• SEP (__) for normal methods, or SPECIAL (_) for special methods.
• Method is the method name
• Overload-ID is a number that identifies this method from those with the same name and different arguments.

getLabel

public static java.lang.String getLabel(gnu.bytecode.Field field)

Returns the unique label for this field.

See Also:

getLabel(gnu.bytecode.ClassType)

getSpecialLabel

public static java.lang.String getSpecialLabel(gnu.bytecode.ClassType classType,
                                               java.lang.String special)

Returns the unique label for a special method such as init, clinit in this class.

getMethodId

public static int getMethodId(gnu.bytecode.Method meth)

Returns the unique global method ID for this method.

getFieldId

public static int getFieldId(gnu.bytecode.Field meth)

Returns the unique global field ID for this field.

findDefinition

public static gnu.bytecode.Method findDefinition(gnu.bytecode.ClassType ctype,
                                                 gnu.bytecode.CpoolNameAndType cmethod)
                                          throws java.lang.Exception

Finds the first definition of the given method in the class heirachy.

findImplementation

public static gnu.bytecode.Method findImplementation(gnu.bytecode.ClassType ctype,
                                                     gnu.bytecode.CpoolNameAndType cmethod)
                                              throws java.lang.Exception

Finds the most recent implementation of the given method.

findImplementation

public static gnu.bytecode.Method findImplementation(gnu.bytecode.ClassType ctype,
                                                     gnu.bytecode.Method method)
                                              throws java.lang.Exception

Finds the most recent implementation of the given method.

findDefinition

public static gnu.bytecode.Method findDefinition(gnu.bytecode.Method method)
                                          throws java.lang.Exception

Finds the first definition of the given method in the class heirachy.