bsh

Class BshMethod

Implemented Interfaces:
java.io.Serializable

public class BshMethod
extends java.lang.Object
implements java.io.Serializable

This represents an instance of a bsh method declaration in a particular namespace. This is a thin wrapper around the BSHMethodDeclaration with a pointer to the declaring namespace.

When a method is located in a subordinate namespace or invoked from an arbitrary namespace it must nontheless execute with its 'super' as the context in which it was declared.

See Also:
Serialized Form

Method Summary

Class[]
getArgumentTypes()
Get the argument types of this method.
String
getName()
Object
getReturnType()
Get the return type of the method.
boolean
hasModifier(String name)
Object
invoke(Object[] argValues, Interpreter interpreter)
Invoke the declared method with the specified arguments and interpreter reference.
Object
invoke(Object[] argValues, Interpreter interpreter, CallStack callstack)
Invoke the declared method with the specified arguments, interpreter reference, and callstack.
Object
invoke(Object[] argValues, Interpreter interpreter, CallStack callstack, bsh.SimpleNode callerInfo)
Object
invoke(Object[] argValues, Interpreter interpreter, CallStack callstack, bsh.SimpleNode callerInfo, boolean overrideNameSpace)
Invoke the bsh method with the specified args, interpreter ref, and callstack.
String
toString()

Method Details

getArgumentTypes

public Class[] getArgumentTypes()
Get the argument types of this method. loosely typed (untyped) arguments will be represented by null argument types.

getName

public String getName()

getReturnType

public Object getReturnType()
Get the return type of the method.
Returns:
Returns null for a loosely typed return value, Primitive.VOID for a void return type, or the Class of the type.

hasModifier

public boolean hasModifier(String name)

invoke

public Object invoke(Object[] argValues,
                     Interpreter interpreter)
            throws EvalError
Invoke the declared method with the specified arguments and interpreter reference. This is the simplest form of invoke() for BshMethod intended to be used in reflective style access to bsh scripts.

invoke

public Object invoke(Object[] argValues,
                     Interpreter interpreter,
                     CallStack callstack)
            throws EvalError
Invoke the declared method with the specified arguments, interpreter reference, and callstack.

Note: this form of invoke() uses a null Node for the caller and a null node for the CallStack. This method is for scripts performing relective style access to scripted methods.


invoke

public Object invoke(Object[] argValues,
                     Interpreter interpreter,
                     CallStack callstack,
                     bsh.SimpleNode callerInfo)
            throws EvalError

invoke

public Object invoke(Object[] argValues,
                     Interpreter interpreter,
                     CallStack callstack,
                     bsh.SimpleNode callerInfo,
                     boolean overrideNameSpace)
            throws EvalError
Invoke the bsh method with the specified args, interpreter ref, and callstack. callerInfo is the node representing the method invocation It is used primarily for debugging in order to provide access to the text of the construct that invoked the method through the namespace.
Parameters:
callstack - is the callstack. If callstack is null a new one will be created with the declaring namespace of the method on top of the stack (i.e. it will look for purposes of the method invocation like the method call occurred in the declaring (enclosing) namespace in which the method is defined).
callerInfo - is the BeanShell AST node representing the method invocation. It is used to print the line number and text of errors in EvalError exceptions. If the node is null here error messages may not be able to point to the precise location and text of the error.
overrideNameSpace - When true the method is executed in the namespace on the top of the stack instead of creating its own local namespace. This allows it to be used in constructors.

toString

public String toString()

B) 2000 pat@pat.net :-)