org.erights.e.elib.base
Class MethodNode

java.lang.Object
  |
  +--org.erights.e.elib.base.MethodNode

All Implemented Interfaces:

Script

Direct Known Subclasses:

EMethodNode, JavaMemberNode, OverloaderNode

public abstract class MethodNode

extends Object

implements Script

Untamed: An element of a VTable

Author:

Mark S. Miller

See Also:

org.erights.e.elib.prim.VTable

Constructor Summary

protected

MethodNode()

Method Summary

abstract void	addJavaMemberNodesToMap(FlexMap map) Enabled: If this MethodNode is or consists of JavaMemberNodes, add these JavaMemberNodes to map indexed by their optTypedVerb (their flat signature).
abstract int	getArity() Enabled: E Polymorphism is based on verb & arity alone.
abstract String	getDocComment() Enabled:
abstract String	getOptTypedVerb() Enabled: Returns null or an interned string containing the parameter type signature in canonical "flat signature" form.
abstract String	getVerb() Enabled: Returns a message selector string (not necessarily interned).
MessageDesc	makeMessageType(String verb) Enabled: Returns a description of the message this method responds to.
void	protocol(Object optSelf, FlexList mTypes) Enabled:
boolean	respondsTo(Object optSelf, String aVerb, int anArity) Enabled:

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.erights.e.elib.base.Script

execute, shorten

Constructor Detail

MethodNode

protected MethodNode()

Method Detail

getDocComment

public abstract String getDocComment()

Enabled:

getVerb

public abstract String getVerb()

Enabled: Returns a message selector string (not necessarily interned).

getOptTypedVerb

public abstract String getOptTypedVerb()

Enabled: Returns null or an interned string containing the parameter type signature in canonical "flat signature" form.

Used to allow the invocation of Java methods that are overloaded by type.

getArity

public abstract int getArity()

Enabled: E Polymorphism is based on verb & arity alone.

addJavaMemberNodesToMap

public abstract void addJavaMemberNodesToMap(FlexMap map)

Enabled: If this MethodNode is or consists of JavaMemberNodes, add these JavaMemberNodes to map indexed by their optTypedVerb (their flat signature).

makeMessageType

public MessageDesc makeMessageType(String verb)

Enabled: Returns a description of the message this method responds to. Should be overridden by subclasses that can be more informative

protocol

public void protocol(Object optSelf,
                     FlexList mTypes)

Enabled:

Specified by:

protocol in interface Script

Parameters:

optSelf - If non-null, and if this script has a match clause, then delegate an __allegedType query to optSelf via the match clause so it can add further elements to mTypes.

Since 'null' is normally a valid value for a 'self', this use of 'null' depends on our knowledge that 'null''s script does not have its own match clause.

mTypes - message descriptions.

respondsTo

public boolean respondsTo(Object optSelf,
                          String aVerb,
                          int anArity)

Enabled:

Specified by:

respondsTo in interface Script

Parameters:

optSelf - If non-null, and if this script has a match clause, and if this script doesn't have a directly matching method, then delegate the respondsTo question to optSelf via the match clause to see if it responds.

Since 'null' is normally a valid value for a 'self', this use of 'null' depends on our knowledge that 'null''s script does not have its own match clause.

aVerb -

anArity -

Returns: