org.problets.domain.model.expression.node.operator.arithmetic
Class Arithmetic

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.arithmetic.Arithmetic

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

Addition, BaseModulus, Division, Exponentiation, Multiplication, Subtraction

public class Arithmetic
extends Operator

To hold all constants specific to arithmetic operators

Author:

Amruth Kumar

Field Summary

static int

TOTAL_OPERATORS

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

Method Summary

Value	evaluate() Checks that arithmetic operators are not applied to boolean operands in Java/C#
void	explain(java.util.Vector explanation, java.util.Vector errors) If the result is not an error, the operator is not modulus, and one operand is an integer whereas the other is real, add an explanation for coercion.
Value	getCoercedValue(Value leftValue, Value rightValue, java.lang.String result) Method does arithmetic conversions so that the result is stored in an object of the correct data type Arithmetic conversions are defined as follows: --If either operand is long double, result is long double.
void	getLocalLearningObjectives(java.util.Vector learnObjVector) Overrides Operator.getLocalLearningObjectives().
java.lang.String	getQualifiedLearningObject() Method returns the name of the operator, disambiguated enough so that it can be easily credited in the student model.

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

clone, coerceToReal, contentEquals, contentEquals, getArity, getAssociativity, getOperatorType, getPrecedence, getStudentCopy, getSymbol, grade, locateOperator, main, recursiveContentEquals, recursiveSetValue

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

classifyNodes, getContent, getLeftChild, getNonRecursiveContent, getOrder, getPosition, getRecursiveContent, 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

TOTAL_OPERATORS

public static final int TOTAL_OPERATORS

See Also:

Constant Field Values

Method Detail

getLocalLearningObjectives

public void getLocalLearningObjectives(java.util.Vector learnObjVector)

Overrides Operator.getLocalLearningObjectives(). The answer being correct is a learning objective applicable to all arithmetic operators Coercion is another learning objective that applies to most arithmetic operators This is used by +, -, *

Overrides:

getLocalLearningObjectives 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

evaluate

public Value evaluate()

Checks that arithmetic operators are not applied to boolean operands in Java/C#

Overrides:

evaluate in class Operator

explain

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

If the result is not an error, the operator is not modulus, and one operand is an integer whereas the other is real, add an explanation for coercion.

Overrides:

explain in class Operator

getCoercedValue

public Value getCoercedValue(Value leftValue,
                             Value rightValue,
                             java.lang.String result)

Method does arithmetic conversions so that the result is stored in an object of the correct data type Arithmetic conversions are defined as follows: --If either operand is long double, result is long double. --Else, if either operand is double, result is double. --Else, if either operand is float, result is float. --Else, integral promotions are done: char, short, unsigned short are coerced to int --Then, if either operand is unsigned long, result is unsigned long. --A step ignored here --Else, if either operand is long, result is long. --Else, if either operand is unsigned, result is unsigned. --Else, result is an int. Source: http://std.dkuug.dk/jtc1/sc22/wg21/docs/wp/html/oct97/