com.whitestein.lsps.lang.operation

Enum IntegerUnaryOperation

java.lang.Object

java.lang.Enum<IntegerUnaryOperation>

com.whitestein.lsps.lang.operation.IntegerUnaryOperation

All Implemented Interfaces:

Operation, Serializable, Comparable<IntegerUnaryOperation>

public enum IntegerUnaryOperation
extends Enum<IntegerUnaryOperation>
implements Operation

Author:

rba

Enum Constant Summary

Enum Constants

Enum Constant and Description
MINUS Decimal unary minus.
PLUS Decimal unary plus.

Method Summary

Modifier and Type	Method and Description
protected abstract Decimal	exec(Decimal arg) Executes the operation with the operands interpreted.
Decimal	execute(Interpreter interpreter, List<Expression> args, boolean variadicArgAsList, InterpreterStackTrace stackTrace) Executes the expression.
Decimal	execute(Namespace namespace, String operation, Decimal arg)
static IntegerUnaryOperation	valueOf(String name) Returns the enum constant of this type with the specified name.
static IntegerUnaryOperation[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

PLUS

public static final IntegerUnaryOperation PLUS

Decimal unary plus.

MINUS

public static final IntegerUnaryOperation MINUS

Decimal unary minus.

Method Detail

values

public static IntegerUnaryOperation[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (IntegerUnaryOperation c : IntegerUnaryOperation.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static IntegerUnaryOperation valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

execute

public Decimal execute(Interpreter interpreter,
                       List<Expression> args,
                       boolean variadicArgAsList,
                       InterpreterStackTrace stackTrace)
                throws ErrorException

Description copied from interface: Operation

Executes the expression. The operation gets the interpreter and argument expressions instead of getting evaluated arguments. This can be used for late argument evaluation or not evaluating them at all.

Specified by:

execute in interface Operation

variadicArgAsList - if true, the variadic argument is given as expression returning a list; if false, the variadic argument is given as several individual expressions

stackTrace - a stack trace passed to the interpreter

Returns:

the result of the operation

Throws:

ErrorException

execute

public Decimal execute(Namespace namespace,
                       String operation,
                       Decimal arg)
                throws ErrorException

Throws:

ErrorException

exec

protected abstract Decimal exec(Decimal arg)

Executes the operation with the operands interpreted.

Parameters:

arg -

Returns:

result of the operation