org.zkoss.zel.impl.parser

Class SimpleNode

java.lang.Object

org.zkoss.zel.impl.lang.ELSupport

org.zkoss.zel.impl.parser.SimpleNode

All Implemented Interfaces:

Node

Direct Known Subclasses:

ArithmeticNode, AstAssign, AstBracketSuffix, AstChoice, AstCompositeExpression, AstConcatenation, AstDeferredExpression, AstDotSuffix, AstDynamicExpression, AstEmpty, AstFloatingPoint, AstFunction, AstIdentifier, AstInteger, AstLambdaExpression, AstLambdaParameters, AstListData, AstLiteralExpression, AstMapData, AstMapEntry, AstMethodParameters, AstNegative, AstNot, AstNull, AstSemicolon, AstSetData, AstString, AstValue, BooleanNode

public abstract class SimpleNode
extends ELSupport
implements Node

Author:

Jacob Hookom [jacob@hookom.net]

Field Summary

Fields

Modifier and Type	Field and Description
protected Node[]	children
protected int	id
protected java.lang.String	image
protected Node	parent

Fields inherited from class org.zkoss.zel.impl.lang.ELSupport

COERCE_NULL_TO_NULL, COERCE_TO_ZERO

Constructor Summary

Constructors

Constructor and Description
SimpleNode(int i)

Method Summary

Modifier and Type	Method and Description
void	accept(NodeVisitor visitor)
boolean	equals(java.lang.Object obj)
java.lang.String	getImage()
MethodInfo	getMethodInfo(EvaluationContext ctx, java.lang.Class<?>[] paramTypes)
java.lang.Class<?>	getType(EvaluationContext ctx)
java.lang.Object	getValue(EvaluationContext ctx)
ValueReference	getValueReference(EvaluationContext ctx)
int	hashCode()
java.lang.Object	invoke(EvaluationContext ctx, java.lang.Class<?>[] paramTypes, java.lang.Object[] paramValues)
boolean	isParametersProvided()
boolean	isReadOnly(EvaluationContext ctx)
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.
int	jjtGetNumSiblings() Returns total siblings (including self) of this node; so at least return one.
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	setImage(java.lang.String image)
void	setValue(EvaluationContext ctx, java.lang.Object value)
java.lang.String	toString()

Methods inherited from class org.zkoss.zel.impl.lang.ELSupport

coerceToBoolean, coerceToDateTime, coerceToEnum, coerceToNumber, coerceToNumber, coerceToNumber, coerceToString, coerceToType, coerceToTypeForSetValue, compare, equals, isBigDecimalOp, isBigIntegerOp, isDateTimeType, isDoubleOp, isLongOp, isStringFloat

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

parent

protected Node parent

children

protected Node[] children

id

protected final int id

image

protected java.lang.String image

Constructor Detail

SimpleNode

public SimpleNode(int i)

Method Detail

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

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

getImage

public java.lang.String getImage()

Specified by:

getImage in interface Node

setImage

public void setImage(java.lang.String image)

getType

public java.lang.Class<?> getType(EvaluationContext ctx)
                           throws ELException

Specified by:

getType in interface Node

Throws:

ELException

getValue

public java.lang.Object getValue(EvaluationContext ctx)
                          throws ELException

Specified by:

getValue in interface Node

Throws:

ELException

isReadOnly

public boolean isReadOnly(EvaluationContext ctx)
                   throws ELException

Specified by:

isReadOnly in interface Node

Throws:

ELException

setValue

public void setValue(EvaluationContext ctx,
                     java.lang.Object value)
              throws ELException

Specified by:

setValue in interface Node

Throws:

ELException

accept

public void accept(NodeVisitor visitor)
            throws java.lang.Exception

Specified by:

accept in interface Node

Throws:

java.lang.Exception

invoke

public java.lang.Object invoke(EvaluationContext ctx,
                               java.lang.Class<?>[] paramTypes,
                               java.lang.Object[] paramValues)
                        throws ELException

Specified by:

invoke in interface Node

Throws:

ELException

getMethodInfo

public MethodInfo getMethodInfo(EvaluationContext ctx,
                                java.lang.Class<?>[] paramTypes)
                         throws ELException

Specified by:

getMethodInfo in interface Node

Throws:

ELException

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

getValueReference

public ValueReference getValueReference(EvaluationContext ctx)

Specified by:

getValueReference in interface Node

Since:

EL 2.2

isParametersProvided

public boolean isParametersProvided()

Specified by:

isParametersProvided in interface Node

Since:

EL 2.2

jjtGetNumSiblings

public int jjtGetNumSiblings()

Returns total siblings (including self) of this node; so at least return one.

Since:

ZEL 2.2.2