org.problets.domain.model.expression.node.operator.misc
Class Parenthesis

java.lang.Object
  org.problets.domain.model.DomainModel
      org.problets.domain.model.expression.node.NodeModel
          org.problets.domain.model.expression.node.operator.Operator
              org.problets.domain.model.expression.node.operator.misc.Parenthesis

All Implemented Interfaces:

java.lang.Cloneable

public class Parenthesis
extends Operator

To represent the parenthesis operator

Author:

Amruth Kumar

Field Summary

static boolean	isSeparateStep
static java.lang.String	SYMBOL

Fields inherited from class org.problets.domain.model.expression.node.operator.Operator

INCORRECT_OPERAND_COUNT

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

Parenthesis(java.lang.String inTemplate, ActivationRecord inActivationRecord)

Method Summary

Value	evaluate() Method to detect any errors before subclasses evaluate expressions Not to be used by client.
void	explain(java.util.Vector explanation, java.util.Vector errors) Textually explains the evaluation of the tree - as opposed to graphical explanation by the view.
java.lang.String	getEmbeddedContent()
Expression	getExpression() Returns reference to embedded expression
java.lang.String	getNonRecursiveContent() Return just the sub-expression corresponding to this node
java.lang.String	getQualifiedLearningObject() Method returns the name of the operator, disambiguated enough so that it can be easily credited in the student model.
java.lang.String	getRecursiveContent()
NodeModel	getStudentCopy() Called by ParenthesizedStudentNodeView
static void	main(java.lang.String[] args)
void	recursiveSetValue(java.lang.String inValue) Overrides NodeModel's function - do not call this function directly, call NodeModel.skip() or NodeModel.shortCircuit() instead
void	setExpression(Expression inExpression) Called by ParenthesisView when reconstructing student's answer from bailed over operands

Methods inherited from class org.problets.domain.model.expression.node.operator.Operator

clone, coerceToReal, contentEquals, contentEquals, getArity, getAssociativity, getLocalLearningObjectives, getOperatorType, getPrecedence, getSymbol, grade, locateOperator, recursiveContentEquals

Methods inherited from class org.problets.domain.model.expression.node.NodeModel

classifyNodes, getContent, getLeftChild, getOrder, getPosition, getRightChild, getSideEffects, getValue, insertInOrder, setLeftChild, setOrder, setPosition, setRightChild, setValue, shortCircuit, skip, subExpToString, toString, valueEquals

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

Field Detail

isSeparateStep

public static boolean isSeparateStep

SYMBOL

public static final java.lang.String SYMBOL

See Also:

Constant Field Values

Constructor Detail

Parenthesis

public Parenthesis(java.lang.String inTemplate,
                   ActivationRecord inActivationRecord)

Method Detail

getRecursiveContent

public java.lang.String getRecursiveContent()

Overrides:

getRecursiveContent in class NodeModel

getExpression

public Expression getExpression()

Returns reference to embedded expression

getEmbeddedContent

public java.lang.String getEmbeddedContent()

getStudentCopy

public NodeModel getStudentCopy()

Called by ParenthesizedStudentNodeView

Overrides:

getStudentCopy in class Operator

getQualifiedLearningObject

public java.lang.String getQualifiedLearningObject()

Method returns the name of the operator, disambiguated enough so that it can be easily credited in the student model.

Overrides:

getQualifiedLearningObject in class Operator

getNonRecursiveContent

public java.lang.String getNonRecursiveContent()

Return just the sub-expression corresponding to this node

Overrides:

getNonRecursiveContent in class NodeModel

setExpression

public void setExpression(Expression inExpression)

Called by ParenthesisView when reconstructing student's answer from bailed over operands

recursiveSetValue

public void recursiveSetValue(java.lang.String inValue)

Overrides NodeModel's function - do not call this function directly, call NodeModel.skip() or NodeModel.shortCircuit() instead

Overrides:

recursiveSetValue in class Operator

evaluate

public Value evaluate()

Description copied from class: Operator

Method to detect any errors before subclasses evaluate expressions Not to be used by client. Checks if both operands are valid Inherited by all except assignment and boolean operators

Overrides:

evaluate in class Operator

explain

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

Textually explains the evaluation of the tree - as opposed to graphical explanation by the view. IMPORTANT: Ideally, this should call expression.explainObject(); But, explainObject() returns a vector of ExplanationLine objects, not AbstractExpressionStep objects, and since parenthesis can be embedded in another expression, the upper level expression will throw a class cast exception when it tries to sortExpression().

Overrides:

explain in class Operator

main

public static void main(java.lang.String[] args)