pascalinterpreter.operators
Class Assign

java.lang.Object
  pascalinterpreter.Operator
      pascalinterpreter.BinaryOperator
          pascalinterpreter.operators.Assign

public class Assign

extends BinaryOperator

Represents a singleton.

Field Summary

private static Assign

instance Holds singleton instance

Fields inherited from class pascalinterpreter.Operator

OP_REG_VAR_NAME

Constructor Summary

private

Assign() prevents instantiation

Method Summary

void	execute(Variable operandL, Variable operandR)
static Assign	getInstance() Returns the singleton instance.
boolean	isPossible(DataType type1, DataType type2) Sprawdza, czy operacja jest możliwa z użyciem tego typu operandów.

Methods inherited from class pascalinterpreter.BinaryOperator

execInitialize, makeConversion, parseDouble

Methods inherited from class pascalinterpreter.Operator

getRegistry, setRegistry, setRegistry, setRegistry, setRegistry

Methods inherited from class java.lang.Object

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

Field Detail

instance

private static Assign instance

Holds singleton instance

Constructor Detail

Assign

private Assign()

prevents instantiation

Method Detail

getInstance

public static Assign getInstance()

Returns the singleton instance.

Returns:

the singleton instance

execute

public void execute(Variable operandL,
                    Variable operandR)
             throws RuntimeException,
                    InternalException

Specified by:

execute in class BinaryOperator

Throws:

RuntimeException

InternalException

isPossible

public boolean isPossible(DataType type1,
                          DataType type2)

Description copied from class: BinaryOperator

Sprawdza, czy operacja jest możliwa z użyciem tego typu operandów.

Overrides:

isPossible in class BinaryOperator

Parameters:

type1 - - typ operandu L.

type2 - - typ operandu R.

Returns:

True, jeżeli operacja jest możliwa. W przeciwnym wypadku false.