sjm.examples.tests
Class Dangle

java.lang.Object
  |
  +--sjm.examples.tests.Dangle

public class Dangle

extends java.lang.Object

This class provides an ambiguous parser in its statement method, which serves to show that the test classes can find ambiguity.

The grammar this class supports is:

 

     statement     = iff | ifelse | callCustomer | sendBill;
     iff           = "if" comparison statement;
     ifelse        = "if" comparison statement 
                     "else" statement;
     comparison    = '(' expression operator expression ')';
     expression    = Word | Num;
     operator      = '<' | '>' | '=' | "<=" | ">=" | "!=";
     optionalElse  = "else" statement | Empty;
     callCustomer  = "callCustomer" '('')' ';';
     sendBill      = "sendBill" '('')' ';';
 

Field Summary

protected static Alternation

statement

Constructor Summary

Dangle()

Method Summary

static Parser	callCustomer()
static Parser	comparison()
static Parser	expression()
static Parser	ifelse()
static Parser	iff()
static Parser	operator()
static Parser	sendBill()
static Parser	statement() Return a parser that recognizes the grammar:

Methods inherited from class java.lang.Object

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

Field Detail

statement

protected static Alternation statement

Constructor Detail

Dangle

public Dangle()

Method Detail

callCustomer

public static Parser callCustomer()

comparison

public static Parser comparison()

expression

public static Parser expression()

ifelse

public static Parser ifelse()

iff

public static Parser iff()

operator

public static Parser operator()

sendBill

public static Parser sendBill()

statement

public static Parser statement()

Return a parser that recognizes the grammar:

     statement    = "if" comparison statement optionalElse |
                     callCustomer | sendBill;
 

Returns:

a parser that recognizes a statement