org.protelis.lang.interpreter.impl

Class Eval

java.lang.Object

org.protelis.lang.interpreter.impl.AbstractProtelisAST<T>

org.protelis.lang.interpreter.impl.AbstractPersistedTree<org.apache.commons.lang3.tuple.Pair<java.lang.String,ProtelisProgram>,java.lang.Object>

org.protelis.lang.interpreter.impl.Eval

All Implemented Interfaces:

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

public final class Eval
extends AbstractPersistedTree<org.apache.commons.lang3.tuple.Pair<java.lang.String,ProtelisProgram>,java.lang.Object>

Evaluate a Protelis sub-program.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Eval(Metadata metadata, ProtelisAST<?> arg)

Method Summary

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

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

loadState, saveState

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Eval

public Eval(Metadata metadata,
            ProtelisAST<?> arg)

Parameters:

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

arg - argument whose annotation will be used as a string representing a program

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

getBytecode

public Bytecode getBytecode()

Returns:

the element Bytecode

toString

public java.lang.String toString()

Description copied from class: AbstractPersistedTree

Specified by:

toString in class AbstractPersistedTree<org.apache.commons.lang3.tuple.Pair<java.lang.String,ProtelisProgram>,java.lang.Object>