org.erights.e.elib.prim
Class JavaMemberNode

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

All Implemented Interfaces:

EStackItem, Script

Direct Known Subclasses:

ConstructorNode, InstanceMethodNode, StaticMethodNode, SugarMethodNode, VarGetterNode, VarSetterNode

public abstract class JavaMemberNode

extends MethodNode

implements EStackItem

Untamed: Abstract superclass of all the CRAPI-based wrappers of java.lang.reflect.Members for installing them in VTables as MethodNodes.

Author:

Mark S. Miller

myMember

final java.lang.reflect.Member myMember

myCallCounter

private final CallCounter myCallCounter

JavaMemberNode

JavaMemberNode(java.lang.reflect.Member member)

makeMessageType

public MessageDesc makeMessageType(String verb)

Enabled:

Overrides:

makeMessageType in class MethodNode

getVerb

public String getVerb()

Enabled:

Specified by:

getVerb in class MethodNode

getOptTypedVerb

public String getOptTypedVerb()

Enabled:

Specified by:

getOptTypedVerb in class MethodNode

getArity

public int getArity()

Enabled:

Specified by:

getArity in class MethodNode

addJavaMemberNodesToMap

public void addJavaMemberNodesToMap(FlexMap map)

Enabled: Add this JavaMemberNode to the map

Specified by:

addJavaMemberNodesToMap in class MethodNode

optCoerceArgs

Object[] optCoerceArgs(Object[] args)

coerceArgs

private Object[] coerceArgs(Object[] args,
 OneArgFunc optEjector)

trySpecialCoercion

private static Object trySpecialCoercion(Object self,
 String aVerb,
 Object[] args,
 Throwable problem)

This is called only when 'self aVerb(args)' has failed due to a coercion-to-Java failure, in which case we try a special case outside our normal coercion theory.

The one such special case currently defined, and hopefully the only one we will define, is to have '3 + 4.5' and such coerce to '3.0 + 4.5'.

If we aren't in one of our special cases, then we should simply rethrow the problem.

shorten

public Script shorten(Object optSelf,
 String aVerb,
 Object[] args)

Enabled: Just returns this.

Specified by:

shorten in interface Script

Parameters:

optSelf - If present, then a script could shorten using instance-specific data.

aVerb - Must be interned

args - Typically, only its arity is used. But OverloaderNode uses the types of the arguments to select among Java overloads.

Returns:

The Script to use in lieu of this one. Note that it's always correct a Script to just return itself.

innerExecute

abstract Object innerExecute(Object self,
 Object[] args)
 throws InstantiationException,
 IllegalAccessException,
 IllegalArgumentException,
 java.lang.reflect.InvocationTargetException

Throws:

IllegalArgumentException - if the number of actual and formal parameters differ, or if an unwrapping or method invocation conversion fails.

InstantiationException

IllegalAccessException

java.lang.reflect.InvocationTargetException

execute

public Object execute(Object self,
 String aVerb,
 Object[] args)

Enabled:

Specified by:

execute in interface Script

member

protected java.lang.reflect.Member member()

parameterTypes

public abstract Class[] parameterTypes()

Enabled:

returnType

public abstract Class returnType()

Enabled:

receiverType

protected abstract Class receiverType()

explain

abstract String explain(String args)

subPrintOn

public void subPrintOn(TextWriter out,
 int priority)
 throws IOException

Enabled:

IOException

toString

public String toString()

Suppressed:

Overrides:

toString in class Object

Returns:

a string representation of the object.

traceOn

public void traceOn(TextWriter out)
 throws IOException

Enabled:

Specified by:

traceOn in interface EStackItem

IOException