Package parser

Class UnaryPreOperator

java.lang.Object

parser.Operator

parser.UnaryPreOperator

All Implemented Interfaces:

Validatable

public final class UnaryPreOperator
extends Operator
implements Validatable

Models a post-operand Operator object e.g the trigonometric,logarithmic,exponential e.t.c. operators.

Author:

GBEMIRO

Field Summary

Fields inherited from class parser.Operator

AND, ASSIGN, AT, CLOSE_CIRC_BRAC, CLOSE_SQUARE_BRAC, COLON, COMBINATION, COMMA, CONST, CUBE, CUBE_ROOT, DIVIDE, EN_DASH, EQUALS, EXIT, FACTORIAL, GREATER_OR_EQUALS, GREATER_THAN, INVERSE, LESS_OR_EQUALS, LESS_THAN, MINUS, MULTIPLY, name, OPEN_CIRC_BRAC, OPEN_SQUARE_BRAC, operators, OR, PERMUTATION, PLUS, POWER, REMAINDER, ROOT, SEMI_COLON, SPACE, SQUARE, STORE

Constructor Summary

Constructors

Constructor	Description
UnaryPreOperator(java.lang.String name, int index, java.util.ArrayList<java.lang.String> scan)	Creates a new UnaryPreOperator object

Method Summary

Modifier and Type	Method	Description
static void	assignCompoundTokens(MathExpression function)
Precedence	getPrecedence()
boolean	validate(java.util.ArrayList<java.lang.String> scan)

Methods inherited from class parser.Operator

getName, getPrecedence, isAssignmentOperator, isAtOperator, isBinaryOperator, isBracket, isClosingBrace, isClosingBracket, isColon, isComma, isConstantStoreCommand, isCube, isCubeRoot, isEqualsOperator, isExitCommand, isFactorial, isInverse, isLogicOperator, isMulOrDiv, isMulOrDivOrRemOrPermOrCombOrPow, isOpeningBrace, isOpeningBracket, isOperatorString, isPermOrComb, isPlusOrMinus, isPower, isRemainder, isSemiColon, isSquare, isSquareRoot, isStoreCommand, isUnaryPostOperator, isUnaryPreOperator, setName, validateAll

Methods inherited from class java.lang.Object

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

Constructor Details

UnaryPreOperator

public UnaryPreOperator(java.lang.String name, int index, java.util.ArrayList<java.lang.String> scan)

Creates a new UnaryPreOperator object

Parameters:

name - The name of the operator

index - The index of the operator in the list

scan - The scanner output

Method Details

getPrecedence

public Precedence getPrecedence()

Returns:

the precedence of this operator

validate

public boolean validate(java.util.ArrayList<java.lang.String> scan)

Specified by:

validate in interface Validatable

Parameters:

scan - the ArrayList object that this UnaryPreOperator object exists in. validates the grammatical usage of this operator (by leaving the correctFunction attribute of the function object un-modified) if the usage of this operator in its immediate environment i.e to its left and right is correct.

Returns:

true if the grammatical usage of this token with repect to its 2 immediate neighbouring tokens to the left and to the right is correct.

assignCompoundTokens

public static void assignCompoundTokens(MathExpression function)

Parameters:

function - the MathExpression object that contains the power operator