Package org.protelis.lang.interpreter.impl

Class JvmConstant

java.lang.Object

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

org.protelis.lang.interpreter.impl.JvmConstant

All Implemented Interfaces:

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

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

Access a variable.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
JvmConstant(Metadata metadata, JVMEntity javaFeature)

Method Summary

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

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

JvmConstant

public JvmConstant(Metadata metadata,
                   JVMEntity javaFeature)

Parameters:

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

javaFeature - the java entity to refer to

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

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

isNullable

protected boolean isNullable()

Overrides:

isNullable in class AbstractProtelisAST<java.lang.Object>

Returns:

true if this node can get annotated with null values - namely, if it is an interaction with Java

toString

public java.lang.String toString()

Description copied from class: AbstractProtelisAST

Overrides:

toString in class AbstractProtelisAST<java.lang.Object>