org.problets.domain.model.expression.node
Class NodeModel

java.lang.Object
  org.problets.domain.model.DomainModel
      org.problets.domain.model.expression.node.NodeModel

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

Operand, Operator

public class NodeModel
extends DomainModel
implements java.lang.Cloneable

To represent the nodes in the expression tree

Author:

Amruth Kumar

Field Summary

Fields inherited from class org.problets.domain.model.DomainModel

BOOLEAN, BREAKPOINT, CHARACTER, DOUBLE_PRECISION_REAL, ERROR_TYPE, EVAL_STATUS, expACTION, expASSIGNMENT, expAUTO_DEALLOCATION, expCALL, expCONDITION, expDECLARATION, expDEREFERENCING, expDYNAMIC_ALLOCATION, expDYNAMIC_ALLOCATION_INITIALIZATION, expDYNAMIC_DEALLOCATION, expELSE_CLAUSE, expERROR, expEXECUTION, expIF_CLAUSE, expINITIALIZATION, expINPUT, expPARAMETER_PASSING, expPRINT, expQUESTIONABLE, expREFERENCING, expRETURN, expRUNTIME_ERROR, expSEMANTIC_ERROR, expSYNTAX_ERROR, expUPDATE, IDENTITY, MAX_OBJECT_IDENTITY, MIN_OBJECT_IDENTITY, QUADRUPLE_PRECISION_REAL, RUNTIME_ERROR, SEMANTIC_ERROR, SIGNED_INTEGER, SIGNED_LONG, SIGNED_SHORT, SINGLE_PRECISION_REAL, SYNTAX_ERROR, UNDEFINED_TYPE, UNSIGNED_INTEGER, UNSIGNED_LONG, UNSIGNED_SHORT, WARNING

Constructor Summary

NodeModel()

Method Summary

void	classifyNodes(java.util.Vector operatorVector, java.util.Vector operandVector) Does an in-order traversal of the view tree (to preserve left to right order) and adds operators to operatorVector, and leaf operands to operandVector
java.lang.Object	clone() Returns a bitwise/shallow copy of this node
boolean	contentEquals(NodeModel right) Method returns true if this NodeModel's conntet is the same as the content of the right NodeModel, and false otherwise
boolean	contentEquals(NodeModel rightOp, int depth)
Value	evaluate()
void	explain(java.util.Vector explanation, java.util.Vector errors) Base Method to be overridden by those of Operand and Operator
java.lang.String	getContent()
NodeModel	getLeftChild()
java.lang.String	getNonRecursiveContent() Return just the sub-expression corresponding to this node
int	getOrder()
int	getPosition()
java.lang.String	getRecursiveContent()
NodeModel	getRightChild()
java.util.Vector	getSideEffects() Returns the side effects for this nodemodel - used only in Assignment right now
NodeModel	getStudentCopy() Method returns a copy of this node with only shareable values, i.e., content and position resetting the others, i.e., left, right, value and order - Method used by StudentNodeModel to make a copy of the correct node for the student's answer
Value	getValue()
boolean	grade(java.lang.String actualTemplate, java.lang.String studentCode, java.util.Vector explanation) Grades the studentCode according to the actualTemplate, returns true if correct, and false otherwise
void	insertInOrder(NodeModel obj)
void	recursiveSetValue(java.lang.String inValue) Do not call this function directly, call NodeModel.skip() or NodeModel.shortCircuit() instead.
void	setLeftChild(NodeModel child) Method used by StudentNodeView to recreate student's answer's model
void	setOrder(int inOrder) Method used by StudentNodeView to set the order in student's answer's model
void	setPosition(int inPosition)
void	setRightChild(NodeModel child) Method used by StudentNodeView to recreate student's answer's model
void	setValue(java.lang.String result)
void	shortCircuit()
void	skip()
java.lang.String	subExpToString() Prints this subexpression - the operator and its two operands
java.lang.String	toString() Returns a string representation of this node
boolean	valueEquals(NodeModel right) Method returns true if this NodeModel's value is the same as the value of the right NodeModel, and false otherwise

Methods inherited from class org.problets.domain.model.DomainModel

getId, getIdName, grade

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

NodeModel

public NodeModel()

Method Detail

clone

public java.lang.Object clone()

Returns a bitwise/shallow copy of this node

Overrides:

clone in class DomainModel

getRecursiveContent

public java.lang.String getRecursiveContent()

getNonRecursiveContent

public java.lang.String getNonRecursiveContent()

Return just the sub-expression corresponding to this node

getContent

public java.lang.String getContent()

getValue

public Value getValue()

getPosition

public int getPosition()

getLeftChild

public NodeModel getLeftChild()

getRightChild

public NodeModel getRightChild()

getOrder

public int getOrder()

valueEquals

public boolean valueEquals(NodeModel right)

Method returns true if this NodeModel's value is the same as the value of the right NodeModel, and false otherwise

contentEquals

public boolean contentEquals(NodeModel right)

Method returns true if this NodeModel's conntet is the same as the content of the right NodeModel, and false otherwise

contentEquals

public boolean contentEquals(NodeModel rightOp,
                             int depth)

classifyNodes

public void classifyNodes(java.util.Vector operatorVector,
                          java.util.Vector operandVector)

Does an in-order traversal of the view tree (to preserve left to right order) and adds operators to operatorVector, and leaf operands to operandVector

getSideEffects

public java.util.Vector getSideEffects()

Returns the side effects for this nodemodel - used only in Assignment right now

setPosition

public void setPosition(int inPosition)

insertInOrder

public void insertInOrder(NodeModel obj)

shortCircuit

public void shortCircuit()

skip

public void skip()

recursiveSetValue

public void recursiveSetValue(java.lang.String inValue)

Do not call this function directly, call NodeModel.skip() or NodeModel.shortCircuit() instead. Cannot make it protected since Operator.recursiveSetValue() calls it wrt left and right

setValue

public void setValue(java.lang.String result)

getStudentCopy

public NodeModel getStudentCopy()

Method returns a copy of this node with only shareable values, i.e., content and position resetting the others, i.e., left, right, value and order - Method used by StudentNodeModel to make a copy of the correct node for the student's answer

setLeftChild

public void setLeftChild(NodeModel child)

Method used by StudentNodeView to recreate student's answer's model

setRightChild

public void setRightChild(NodeModel child)

Method used by StudentNodeView to recreate student's answer's model

setOrder

public void setOrder(int inOrder)

Method used by StudentNodeView to set the order in student's answer's model

evaluate

public Value evaluate()

explain

public void explain(java.util.Vector explanation,
                    java.util.Vector errors)

Base Method to be overridden by those of Operand and Operator

grade

public boolean grade(java.lang.String actualTemplate,
                     java.lang.String studentCode,
                     java.util.Vector explanation)

Grades the studentCode according to the actualTemplate, returns true if correct, and false otherwise

toString

public java.lang.String toString()

Returns a string representation of this node

Overrides:

toString in class java.lang.Object

subExpToString

public java.lang.String subExpToString()

Prints this subexpression - the operator and its two operands