com.scriptbasic.syntax.commands

Class BasicCommandFactory

java.lang.Object

com.scriptbasic.syntax.commands.BasicCommandFactory

All Implemented Interfaces:

CommandFactory, FactoryManaged

public final class BasicCommandFactory
extends Object
implements CommandFactory

Constructor Summary

Constructors

Constructor and Description
BasicCommandFactory()

Method Summary

Methods

Modifier and Type	Method and Description
Command	create(String commandKeyword) Create a Command that starts with the keyword.
Factory	getFactory()
void	registerCommandAnalyzer(String keyword, CommandAnalyzer analyzer) Register a new command analyzer that the factory will use to analyze a line.
void	setFactory(Factory factory) When a factory creates an instance of a class implementing this interface this method is called to register the factory that created the instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicCommandFactory

public BasicCommandFactory()

Method Detail

getFactory

public Factory getFactory()

setFactory

public void setFactory(Factory factory)

Description copied from interface: FactoryManaged

When a factory creates an instance of a class implementing this interface this method is called to register the factory that created the instance.

Specified by:

setFactory in interface FactoryManaged

Parameters:

factory - the factory that manages the instance.

registerCommandAnalyzer

public void registerCommandAnalyzer(String keyword,
                           CommandAnalyzer analyzer)

Description copied from interface: CommandFactory

Register a new command analyzer that the factory will use to analyze a line. The analyzer will be used to analyze a line if the line starts with the keyword.

Specified by:

registerCommandAnalyzer in interface CommandFactory

Parameters:

keyword - the keyword the line should start when this command is to be analyzed or null if this analyzer analyzes a line that does not start with a specific keyword

analyzer - the command analyzer for the specific keyword

create

public Command create(String commandKeyword)
               throws AnalysisException

Description copied from interface: CommandFactory

Create a Command that starts with the keyword.

Specified by:

create in interface CommandFactory

Parameters:

commandKeyword - the command keyword lexeme or null in case the command does not start with a keyword (e.g. procedure call or assignment)

Returns:

the created command

Throws:

AnalysisException - is there is a lexical or syntax exception if there is some error with the command factory itself and it can not analyze the line and does not know what the error is. (probably the syntax of the line is totally wrong)