org.problets.domain.model.language
Class Language

java.lang.Object
  org.problets.domain.model.language.Language

Direct Known Subclasses:

CLanguage, CSLanguage, JavaLanguage, PascalLanguage, VBLanguage

public abstract class Language
extends java.lang.Object

Serves as the base class for all the classes that provide language-specific details such as the available data types

Author:

Amruth Kumar

Constructor Summary

Language(java.lang.String[] inDataTypes)

Method Summary

java.lang.String[]	getAllDataTypes() Returns all the possible data types for the various languages
java.lang.String	getCaseHeader(java.lang.String value) Returns a case statement for the switch
java.lang.String	getDefaultDataType() The data type used for random number generation is an invalid data type has been specified
java.lang.String	getDefaultHeader() Returns the default case of switch
Equals	getEqualsOperator() Returns the Equals operator for this language
ForLoopModel	getForLoop(ActivationRecord parent, HeapModel heap, java.lang.String template, int scopeType) Returns the for loop model for the current language
java.lang.String	getIfHeader(java.lang.String condition) Returns the header of an if statement
void	getIntegerTypes(java.util.Vector optionVector) Returns the possible integer types for the various languages
abstract int	getMetaDataType(java.lang.String dataType) Returns the language-neutral meta data type (integer) corresponding to the language-specific string
abstract BaseModulus	getModulusOperator() Returns the Modulus operator for this language
NotEquals	getNotEqualsOperator() Returns the Equals operator for this language
int	getNumDataTypes() Returns the number of data types in this language
java.lang.String	getPrintString(java.lang.String printedValue, java.lang.String dataType) Returns the syntax for printing printedValue in the current language
Program	getProgram(ActivationRecord parentActivationRecord, HeapModel heap, java.lang.String template) Returns a program object for the given language
void	getRealTypes(java.util.Vector optionVector) Returns the possible real types for the various languages
void	getSignedTypes(java.util.Vector optionVector) Returns the possible signed types for the various languages
java.lang.String	getStatementDelimiter() Returns the delimiter for statements in the language
java.lang.String	getSwitchHeader(java.lang.String condition) Returns the switch statement header
void	getUnsignedTypes(java.util.Vector optionVector) Returns the possible unsigned types for the various languages
java.lang.String	getWhileHeader(java.lang.String condition) Returns the header of a while statement
boolean	hasUnsignedType() Returns whether unsigned data type exists in the language
abstract boolean	isIntegerType(java.lang.String dataType) Returns whether dataType is of integer type in the language
abstract boolean	isRealType(java.lang.String dataType) Returns whether dataType is of real type in the language
boolean	isValidDataType(java.lang.String currentDataType) Returns whether currentDataType is a valid data type for this language
static void	main(java.lang.String[] args)
boolean	shouldExplainCoercionInAssignment(int variableMetaDataType, int valueMetaDataType) We want to avoid explaining coercion in expressions such as unsigned short x; x = 5; where 5 is automatically treated as CDouble.
Value	typeCompatibleAssign(Assignable left, Value right, boolean isCompoundOperator) Returns true if right value can be assigned to the left variable, and false otherwise

Methods inherited from class java.lang.Object

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

Constructor Detail

Language

public Language(java.lang.String[] inDataTypes)

Method Detail

getAllDataTypes

public final java.lang.String[] getAllDataTypes()

Returns all the possible data types for the various languages

getNumDataTypes

public int getNumDataTypes()

Returns the number of data types in this language

getIntegerTypes

public void getIntegerTypes(java.util.Vector optionVector)

Returns the possible integer types for the various languages

getSignedTypes

public void getSignedTypes(java.util.Vector optionVector)

Returns the possible signed types for the various languages

hasUnsignedType

public boolean hasUnsignedType()

Returns whether unsigned data type exists in the language

getUnsignedTypes

public void getUnsignedTypes(java.util.Vector optionVector)

Returns the possible unsigned types for the various languages

getRealTypes

public void getRealTypes(java.util.Vector optionVector)

Returns the possible real types for the various languages

isValidDataType

public boolean isValidDataType(java.lang.String currentDataType)

Returns whether currentDataType is a valid data type for this language

isIntegerType

public abstract boolean isIntegerType(java.lang.String dataType)

Returns whether dataType is of integer type in the language

Parameters:

dataType - String which will be checked against integer types for the language

isRealType

public abstract boolean isRealType(java.lang.String dataType)

Returns whether dataType is of real type in the language

Parameters:

dataType - String which will be checked against real types for the language

getDefaultDataType

public java.lang.String getDefaultDataType()

The data type used for random number generation is an invalid data type has been specified

getMetaDataType

public abstract int getMetaDataType(java.lang.String dataType)

Returns the language-neutral meta data type (integer) corresponding to the language-specific string

shouldExplainCoercionInAssignment

public boolean shouldExplainCoercionInAssignment(int variableMetaDataType,
                                                 int valueMetaDataType)

We want to avoid explaining coercion in expressions such as unsigned short x; x = 5; where 5 is automatically treated as CDouble. Instead, we want to explain coercion only when integer values are assigned to real variables and vice versa. This function is called by inherited classes to determine whether they should explain coercion

typeCompatibleAssign

public Value typeCompatibleAssign(Assignable left,
                                  Value right,
                                  boolean isCompoundOperator)

Returns true if right value can be assigned to the left variable, and false otherwise

Parameters:

left - Assignable variable/expression

right - Value assigned to left variable/expression

Returns:

True if right value can be assigned to the left variable/expression, and false otherwise

getEqualsOperator

public Equals getEqualsOperator()

Returns the Equals operator for this language

getNotEqualsOperator

public NotEquals getNotEqualsOperator()

Returns the Equals operator for this language

getModulusOperator

public abstract BaseModulus getModulusOperator()

Returns the Modulus operator for this language

getStatementDelimiter

public java.lang.String getStatementDelimiter()

Returns the delimiter for statements in the language

getPrintString

public java.lang.String getPrintString(java.lang.String printedValue,
                                       java.lang.String dataType)

Returns the syntax for printing printedValue in the current language

getSwitchHeader

public java.lang.String getSwitchHeader(java.lang.String condition)

Returns the switch statement header

getCaseHeader

public java.lang.String getCaseHeader(java.lang.String value)

Returns a case statement for the switch

getDefaultHeader

public java.lang.String getDefaultHeader()

Returns the default case of switch

getWhileHeader

public java.lang.String getWhileHeader(java.lang.String condition)

Returns the header of a while statement

getIfHeader

public java.lang.String getIfHeader(java.lang.String condition)

Returns the header of an if statement

getForLoop

public ForLoopModel getForLoop(ActivationRecord parent,
                               HeapModel heap,
                               java.lang.String template,
                               int scopeType)

Returns the for loop model for the current language

getProgram

public Program getProgram(ActivationRecord parentActivationRecord,
                          HeapModel heap,
                          java.lang.String template)

Returns a program object for the given language

main

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