cdx.scorebot.scoring.logic
Class Assignment

java.lang.Object
  cdx.scorebot.scoring.logic.Assignment

All Implemented Interfaces:

ExpressionType, LogicCode, LogicCodeEvaluatable, LogicCodeExecutable, StatementType

public class Assignment
extends java.lang.Object
implements LogicCodeExecutable, LogicCodeEvaluatable, ExpressionType, StatementType

evaluates an assignment statement

Author:

David Underhill

Constructor Summary

Assignment(Identifier varIden, OperatorType assignmentOperator, Expression value)
instantiate an assignment statement

Method Summary

Literal	evaluateLogic(Context context) evaluate this logic code in the specified context
LiteralType	evaluateTypeOnly(java.util.HashMap<java.lang.String,LiteralType> varTypes, java.util.HashMap<java.lang.String,TestData> testsInfo) returns the kind of literal this evaluates to
void	executeLogic(Context context) process this logic code in the specified context
void	validateTypes(java.util.HashMap<java.lang.String,LiteralType> varTypes, java.util.HashMap<java.lang.String,TestData> testsInfo) Attempts to validate the type-correctness of all constituent LogicCodeEvaluatable logic code.

Methods inherited from class java.lang.Object

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

Constructor Detail

Assignment

public Assignment(Identifier varIden,
                  OperatorType assignmentOperator,
                  Expression value)

instantiate an assignment statement

Parameters:

varIden - identifier of the variable to assign to

assignmentOperator - assignment operator to use

value - the value to assign

Method Detail

evaluateLogic

public Literal evaluateLogic(Context context)
                      throws LogicException

evaluate this logic code in the specified context

Specified by:

evaluateLogic in interface LogicCodeEvaluatable

Parameters:

context - contains the current context of the logic processor

Returns:

the value this logic evaluates to

Throws:

LogicException - thrown if an exception occurs while processing the logic

executeLogic

public void executeLogic(Context context)
                  throws LogicException

process this logic code in the specified context

Specified by:

executeLogic in interface LogicCodeExecutable

Parameters:

context - contains the current context of the logic processor

Throws:

LogicException - thrown if an exception occurs while processing the logic

evaluateTypeOnly

public LiteralType evaluateTypeOnly(java.util.HashMap<java.lang.String,LiteralType> varTypes,
                                    java.util.HashMap<java.lang.String,TestData> testsInfo)
                             throws LogicException

Description copied from interface: LogicCodeEvaluatable

returns the kind of literal this evaluates to

Specified by:

evaluateTypeOnly in interface LogicCodeEvaluatable

Parameters:

varTypes - contains the type of value stored by each variable (variables names are keys)

testsInfo - information about each test item keyed on test item names this logic may hold

Returns:

the LiteralType this evaluates to

Throws:

LogicException - thrown if there is a problem with type which prevents this from being evaluated

validateTypes

public void validateTypes(java.util.HashMap<java.lang.String,LiteralType> varTypes,
                          java.util.HashMap<java.lang.String,TestData> testsInfo)
                   throws LogicException

Description copied from interface: LogicCodeExecutable

Attempts to validate the type-correctness of all constituent LogicCodeEvaluatable logic code. An exception is thrown if there is some type-check failure.

Specified by:

validateTypes in interface LogicCodeExecutable

Parameters:

varTypes - contains the type of value stored by each variable (variables names are keys)

testsInfo - information about each test item keyed on test item names this logic may hold

Throws:

LogicException - thrown if an exception if an invalid test, test result, or test option is found