slogo.parser

Class IdentifierParser

java.lang.Object

slogo.parser.IdentifierParser

All Implemented Interfaces:

Parser

public class IdentifierParser
extends java.lang.Object
implements Parser

Parse an assignment statement, which looks like <id> <assignment_token, i.e., = > <expression>

Constructor Summary

Constructors

Constructor and Description
IdentifierParser() IdentifierParser Constructor

Method Summary

Modifier and Type	Method and Description
GrammarElement	parse(SLogoInterpreter interpreter) parses an assignment statement, which looks like id = expression

Methods inherited from class java.lang.Object

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

Constructor Detail

IdentifierParser

public IdentifierParser()

IdentifierParser Constructor

Method Detail

parse

public GrammarElement parse(SLogoInterpreter interpreter)
                     throws ParseException

parses an assignment statement, which looks like id = expression

Specified by:

parse in interface Parser

Parameters:

interpreter - is a SLogoInterperter used to interpret the code

Returns:

an Assignment(...) instruction call to properly identify the instruction to be parsed

Throws:

ParseException - if expression does not contain an equals sign.