bsh
Class BSHType

java.lang.Object
  |
  +--bsh.SimpleNode
        |
        +--bsh.BSHType

All Implemented Interfaces:

BshClassManager.Listener, Node, java.io.Serializable

class BSHType

extends SimpleNode

implements BshClassManager.Listener

Field Summary

private int	arrayDims If we are an array type this will be non zero and indicate the dimensionality of the array.
private java.lang.Class	baseType baseType is used during evaluation of full type and retained for the case where we are an array type.
protected Node[]	children
(package private) Token	firstToken
protected int	id
(package private) Token	lastToken
protected Node	parent
(package private) java.lang.String	sourceFile the source of the text from which this was parsed
private java.lang.Class	type Internal cache of the fully expressed type.

Constructor Summary

(package private)

BSHType(int id)

Method Summary

void	addArrayDimension() Used by the grammar to indicate dimensions of array types during parsing.
void	classLoaderChanged()
void	dump(java.lang.String prefix)
java.lang.Object	eval(CallStack callstack, Interpreter interpreter) This is the general signature for evaluation of a node.
java.lang.Object	eval(NameSpace namespace) Some nodes require only a namespace for evaluation.
int	getArrayDims() If we are an array type this will be non zero and indicate the dimensionality of the array.
java.lang.Class	getBaseType() baseType is used during evaluation of full type and retained for the case where we are an array type.
SimpleNode	getChild(int i)
int	getLineNumber() Get the line number of the starting token
java.lang.String	getSourceFile() Get the name of the source file (or more generally source) of the text from which this node was parsed.
java.lang.String	getText() Get the text of the tokens comprising this node.
java.lang.Class	getType(NameSpace namespace) Returns a class for the type
void	jjtAddChild(Node n, int i) This method tells the node to add its argument to the node's list of children.
void	jjtClose() This method is called after all the child nodes have been added.
Node	jjtGetChild(int i) This method returns a child node.
int	jjtGetNumChildren() Return the number of children the node has.
Node	jjtGetParent()
void	jjtOpen() This method is called after the node has been made the current node.
void	jjtSetParent(Node n) This pair of methods are used to inform the node of its parent.
void	prune() Detach this node from its parent.
void	setSourceFile(java.lang.String sourceFile) Set the name of the source file (or more generally source) of the text from which this node was parsed.
java.lang.String	toString()
java.lang.String	toString(java.lang.String prefix)

Methods inherited from class java.lang.Object

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

Field Detail

baseType

private java.lang.Class baseType

baseType is used during evaluation of full type and retained for the case where we are an array type. In the case where we are not an array this will be the same as type.

arrayDims

private int arrayDims

If we are an array type this will be non zero and indicate the dimensionality of the array. e.g. 2 for String[][];

type

private java.lang.Class type

Internal cache of the fully expressed type. i.e. primtive, class, or array. Cleared on classloader change.

parent

protected Node parent

children

protected Node[] children

id

protected int id

firstToken

Token firstToken

lastToken

Token lastToken

sourceFile

java.lang.String sourceFile

the source of the text from which this was parsed

Constructor Detail

BSHType

BSHType(int id)

Method Detail

addArrayDimension

public void addArrayDimension()

Used by the grammar to indicate dimensions of array types during parsing.

getType

public java.lang.Class getType(NameSpace namespace)
                        throws EvalError

Returns a class for the type

EvalError

getBaseType

public java.lang.Class getBaseType()

baseType is used during evaluation of full type and retained for the case where we are an array type. In the case where we are not an array this will be the same as type.

getArrayDims

public int getArrayDims()

If we are an array type this will be non zero and indicate the dimensionality of the array. e.g. 2 for String[][];

classLoaderChanged

public void classLoaderChanged()

Specified by:

classLoaderChanged in interface BshClassManager.Listener

jjtOpen

public void jjtOpen()

Description copied from interface: Node

This method is called after the node has been made the current node. It indicates that child nodes can now be added to it.

Specified by:

jjtOpen in interface Node

jjtClose

public void jjtClose()

Description copied from interface: Node

This method is called after all the child nodes have been added.

Specified by:

jjtClose in interface Node

jjtSetParent

public void jjtSetParent(Node n)

Description copied from interface: Node

This pair of methods are used to inform the node of its parent.

Specified by:

jjtSetParent in interface Node

jjtGetParent

public Node jjtGetParent()

Specified by:

jjtGetParent in interface Node

jjtAddChild

public void jjtAddChild(Node n,
                        int i)

Description copied from interface: Node

This method tells the node to add its argument to the node's list of children.

Specified by:

jjtAddChild in interface Node

jjtGetChild

public Node jjtGetChild(int i)

Description copied from interface: Node

This method returns a child node. The children are numbered from zero, left to right.

Specified by:

jjtGetChild in interface Node

getChild

public SimpleNode getChild(int i)

jjtGetNumChildren

public int jjtGetNumChildren()

Description copied from interface: Node

Return the number of children the node has.

Specified by:

jjtGetNumChildren in interface Node

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(java.lang.String prefix)

dump

public void dump(java.lang.String prefix)

prune

public void prune()

Detach this node from its parent. This is primarily useful in node serialization. (see BSHMethodDeclaration)

eval

public java.lang.Object eval(NameSpace namespace)
                      throws EvalError

Some nodes require only a namespace for evaluation.

EvalError

eval

public java.lang.Object eval(CallStack callstack,
                             Interpreter interpreter)
                      throws EvalError

This is the general signature for evaluation of a node.

EvalError

setSourceFile

public void setSourceFile(java.lang.String sourceFile)

Set the name of the source file (or more generally source) of the text from which this node was parsed.

getSourceFile

public java.lang.String getSourceFile()

Get the name of the source file (or more generally source) of the text from which this node was parsed. This will recursively search up the chain of parent nodes until a source is found or return a string indicating that the source is unknown.

getLineNumber

public int getLineNumber()

Get the line number of the starting token

getText

public java.lang.String getText()

Get the text of the tokens comprising this node.