edu.vub.at.objects.mirrors
Class NativeMethod

java.lang.Object
  extended byedu.vub.at.objects.natives.NATNil
      extended byedu.vub.at.objects.natives.NATByRef
          extended byedu.vub.at.objects.mirrors.NativeMethod
All Implemented Interfaces:
ATAbstractGrammar, ATConversions, ATExpression, ATMethod, ATNil, ATObject, ATStatement, java.io.Serializable

public final class NativeMethod
extends NATByRef
implements ATMethod

A NativeMethod is a wrapper around a Java method allowing it to be selected from native base-level objects and passed around as an ordinary object.

Author:
tvcutsem, smostinc
See Also:
Serialized Form

Field Summary
private  java.lang.reflect.Method javaMethod_
           
private  ATSymbol name_
           
 
Fields inherited from class edu.vub.at.objects.natives.NATNil
_INSTANCE_
 
Constructor Summary
NativeMethod(java.lang.reflect.Method javaMethod, ATSymbol name)
          Construct a new wrapper object from a Java method.
 
Method Summary
 ATObject base_apply(ATTable arguments, ATContext ctx)
          Applies the method to the given arguments in the given context.
 ATObject base_applyInScope(ATTable arguments, ATContext ctx)
          Applies the method to the given arguments in the given context.
 ATMethod base_asMethod()
           
 ATBegin base_getBodyExpression()
          Structural access to the body of the method.
 ATSymbol base_getName()
          The name of a wrapped Java method is the name of the Java method, converted to an AmbientTalk selector name.
 ATTable base_getParameters()
          The parameters of a wrapped method are represented as symbols representing the class name of the parameter type.
 boolean base_isMethod()
           
 ATTable meta_getStripes()
          Returns the stripes of this object.
 NATText meta_print()
          Prints out the object in a human-readable way.
 
Methods inherited from class edu.vub.at.objects.natives.NATByRef
meta_pass, meta_resolve
 
Methods inherited from class edu.vub.at.objects.natives.NATNil
asAmbientTalkObject, asJavaClassUnderSymbiosis, asJavaObjectUnderSymbiosis, asNativeBoolean, asNativeException, asNativeFarReference, asNativeFraction, asNativeNumber, asNativeNumeric, asNativeTable, asNativeText, base__opeql__opeql_, base_asActorMirror, base_asAsyncMessage, base_asBegin, base_asBoolean, base_asClosure, base_asDefinition, base_asExpression, base_asFarReference, base_asField, base_asHandler, base_asMessage, base_asMessageCreation, base_asMirror, base_asNumber, base_asSplice, base_asStatement, base_asStripe, base_asSymbol, base_asTable, base_asUnquoteSplice, base_asVariableAssignment, base_init, base_isBoolean, base_isCallFrame, base_isClosure, base_isFarReference, base_isMessageCreation, base_isMirror, base_isSplice, base_isStripe, base_isSymbol, base_isTable, base_isUnquoteSplice, base_isVariableAssignment, base_new, createChild, equals, isAmbientTalkObject, isJavaObjectUnderSymbiosis, isNativeBoolean, isNativeField, isNativeText, meta_addField, meta_addMethod, meta_assignField, meta_assignVariable, meta_clone, meta_defineField, meta_doesNotUnderstand, meta_eval, meta_extend, meta_getDynamicParent, meta_getLexicalParent, meta_grabField, meta_grabMethod, meta_invoke, meta_isCloneOf, meta_isRelatedTo, meta_isStripedWith, meta_listFields, meta_listMethods, meta_lookup, meta_newInstance, meta_quote, meta_receive, meta_respondsTo, meta_select, meta_send, meta_share, readResolve, toString, writeReplace
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface edu.vub.at.objects.ATObject
base__opeql__opeql_, base_init, base_new, meta_addField, meta_addMethod, meta_assignField, meta_assignVariable, meta_clone, meta_defineField, meta_doesNotUnderstand, meta_eval, meta_extend, meta_getDynamicParent, meta_getLexicalParent, meta_grabField, meta_grabMethod, meta_invoke, meta_isCloneOf, meta_isRelatedTo, meta_isStripedWith, meta_listFields, meta_listMethods, meta_lookup, meta_newInstance, meta_pass, meta_quote, meta_receive, meta_resolve, meta_respondsTo, meta_select, meta_send, meta_share
 
Methods inherited from interface edu.vub.at.objects.coercion.ATConversions
asAmbientTalkObject, asJavaClassUnderSymbiosis, asJavaObjectUnderSymbiosis, asNativeBoolean, asNativeException, asNativeFarReference, asNativeFraction, asNativeNumber, asNativeNumeric, asNativeTable, asNativeText, base_asActorMirror, base_asAsyncMessage, base_asBegin, base_asBoolean, base_asClosure, base_asDefinition, base_asExpression, base_asFarReference, base_asField, base_asHandler, base_asMessage, base_asMessageCreation, base_asMirror, base_asNumber, base_asSplice, base_asStatement, base_asStripe, base_asSymbol, base_asTable, base_asUnquoteSplice, base_asVariableAssignment, base_isBoolean, base_isCallFrame, base_isClosure, base_isFarReference, base_isMessageCreation, base_isMirror, base_isSplice, base_isStripe, base_isSymbol, base_isTable, base_isUnquoteSplice, base_isVariableAssignment, isAmbientTalkObject, isJavaObjectUnderSymbiosis, isNativeBoolean, isNativeField, isNativeText
 

Field Detail

javaMethod_

private final java.lang.reflect.Method javaMethod_

name_

private final ATSymbol name_
Constructor Detail

NativeMethod

public NativeMethod(java.lang.reflect.Method javaMethod,
                    ATSymbol name)
Construct a new wrapper object from a Java method.

Parameters:
javaMethod - the java method to be wrapped.
Method Detail

base_getName

public ATSymbol base_getName()
                      throws InterpreterException
The name of a wrapped Java method is the name of the Java method, converted to an AmbientTalk selector name.

Specified by:
base_getName in interface ATMethod
Throws:
InterpreterException

base_getParameters

public ATTable base_getParameters()
                           throws InterpreterException
The parameters of a wrapped method are represented as symbols representing the class name of the parameter type.

Specified by:
base_getParameters in interface ATMethod
Throws:
InterpreterException

base_getBodyExpression

public ATBegin base_getBodyExpression()
Description copied from interface: ATMethod
Structural access to the body of the method.

Specified by:
base_getBodyExpression in interface ATMethod

base_apply

public ATObject base_apply(ATTable arguments,
                           ATContext ctx)
                    throws InterpreterException
Description copied from interface: ATMethod
Applies the method to the given arguments in the given context. The context is usually supplied by a closure and is necessary in order to pair a method with its current receiver (its 'self') The method itself is responsible for creating the appropriate 'call frame' or activation record in which to define temporary variables and parameter bindings.

Specified by:
base_apply in interface ATMethod
Parameters:
arguments - the actual arguments, already eagerly evaluated
ctx - the context in which to evaluate the method body, call frame not yet inserted
Returns:
the value of evaluating the method body in a context derived from the given context
Throws:
InterpreterException

base_applyInScope

public ATObject base_applyInScope(ATTable arguments,
                                  ATContext ctx)
                           throws InterpreterException
Description copied from interface: ATMethod
Applies the method to the given arguments in the given context. The context is usually supplied by a closure and is necessary in order to pair a method with its current receiver (its 'self') The method will use the given context 'as-is', and will *not* insert an additional call frame.

Specified by:
base_applyInScope in interface ATMethod
Parameters:
arguments - the actual arguments, already eagerly evaluated
ctx - the context in which to evaluate the method body, to be used without inserting a call frame
Returns:
the value of evaluating the method body in the given context
Throws:
InterpreterException

base_asMethod

public ATMethod base_asMethod()
                       throws XTypeMismatch
Specified by:
base_asMethod in interface ATConversions
Overrides:
base_asMethod in class NATNil
Throws:
XTypeMismatch

base_isMethod

public boolean base_isMethod()
Specified by:
base_isMethod in interface ATConversions
Overrides:
base_isMethod in class NATNil

meta_print

public NATText meta_print()
                   throws InterpreterException
Description copied from interface: ATObject
Prints out the object in a human-readable way.

Specified by:
meta_print in interface ATObject
Overrides:
meta_print in class NATNil
Throws:
InterpreterException

meta_getStripes

public ATTable meta_getStripes()
                        throws InterpreterException
Description copied from interface: ATObject
Returns the stripes of this object. Note that only the stripes that were attached directly to this object are returned, not all of the parent's stripes as well.

Specified by:
meta_getStripes in interface ATObject
Overrides:
meta_getStripes in class NATNil
Throws:
InterpreterException