org.protelis.lang.interpreter.impl

Class UnaryOp

java.lang.Object

org.protelis.lang.interpreter.impl.AbstractProtelisAST<java.lang.Object>

org.protelis.lang.interpreter.impl.UnaryOp

All Implemented Interfaces:

java.io.Serializable, ProtelisAST<java.lang.Object>, WithBytecode

public final class UnaryOp
extends AbstractProtelisAST<java.lang.Object>

Unary (prefix) operator, such as negation.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
UnaryOp(Metadata metadata, java.lang.String name, ProtelisAST<?> branch)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	evaluate(ExecutionContext context) Evaluates this AST node.
Bytecode	getBytecode()
java.lang.String	getName()

Methods inherited from class org.protelis.lang.interpreter.impl.AbstractProtelisAST

branchesToString, branchesToString, eval, forEach, forEachWithIndex, getBranch, getBranches, getBranchesNumber, getMetadata, isNullable, stringFor, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

UnaryOp

public UnaryOp(Metadata metadata,
               java.lang.String name,
               ProtelisAST<?> branch)

Parameters:

metadata - A Metadata object containing information about the code that generated this AST node.

name - operator name

branch - the operand

Method Detail

evaluate

public java.lang.Object evaluate(ExecutionContext context)

Description copied from class: AbstractProtelisAST

Evaluates this AST node. This method can throw any exception, AbstractProtelisAST takes care of storing the necessary metadata.

Specified by:

evaluate in class AbstractProtelisAST<java.lang.Object>

Parameters:

context - the execution context

Returns:

the result of the evaluation

getName

public java.lang.String getName()

Description copied from class: AbstractProtelisAST

Specified by:

getName in interface ProtelisAST<java.lang.Object>

Overrides:

getName in class AbstractProtelisAST<java.lang.Object>

Returns:

The name of the operation

getBytecode

public Bytecode getBytecode()

Returns:

the element Bytecode