slogo.parser

Class InstructionParser

java.lang.Object

slogo.parser.InstructionParser

All Implemented Interfaces:

Parser

public class InstructionParser
extends java.lang.Object
implements Parser

Instruction Parser - calls appropriate Parser for each Instruction

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<java.lang.Class,Parser>	myParserMap
private static InstructionParser	ourInstance

Constructor Summary

Constructors

Modifier	Constructor and Description
private	InstructionParser() Create the InstructionParser--generates a map of classes to parsers

Method Summary

Methods

Modifier and Type	Method and Description
static InstructionParser	getInstance()
GrammarElement	parse(SLogoParser ep) gets the appropriate parser to parse the token

Methods inherited from class java.lang.Object

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

Field Detail

myParserMap

private java.util.Map<java.lang.Class,Parser> myParserMap

ourInstance

private static InstructionParser ourInstance

Constructor Detail

InstructionParser

private InstructionParser()

Create the InstructionParser--generates a map of classes to parsers

Method Detail

getInstance

public static InstructionParser getInstance()

Returns:

the one InstructionParser object

parse

public GrammarElement parse(SLogoParser ep)

gets the appropriate parser to parse the token

Specified by:

parse in interface Parser