net.sf.jga.parser
Class GenericParser

java.lang.Object
  net.sf.jga.parser.FunctorParser
      net.sf.jga.parser.GenericParser

All Implemented Interfaces:

FunctorParserConstants

public class GenericParser
extends FunctorParser

FunctorParser that add runtime type-safe entry points (to the degree that runtime type-safe is not an oxymoron). This class maps between the inherently typeunsafe baseclass and the generic functors that are returned: if the returned functor does not return the correct type, then a ClassCastException will be thrown by the entry point.

Copyright © 2004 David A. Hall

Author:

David A. Hall

Field Summary

Fields inherited from class net.sf.jga.parser.FunctorParser

ARG_NAME, jj_nt, lookingAhead, token, token_source

Fields inherited from interface net.sf.jga.parser.FunctorParserConstants

CHARACTER_LITERAL, DECIMAL_LITERAL, DEFAULT, DIGIT, EOF, EXPONENT, FALSE, FLOATING_POINT_LITERAL, HEX_LITERAL, IDENTIFIER, INTEGER_LITERAL, LETTER, LPAREN, NEW, NULL, OCTAL_LITERAL, STRING_LITERAL, tokenImage, TRUE

Constructor Summary

GenericParser()

GenericParser(FunctorParserTokenManager tm)

GenericParser(java.io.InputStream is)

GenericParser(java.io.Reader reader)

Method Summary

static GenericParser	getInstance()
<T1,T2,R> BinaryFunctor<T1,T2,R>	parseBinary(java.lang.String str, java.lang.Class<T1> arg1Type, java.lang.Class<T2> arg2Type, java.lang.Class<R> returnType) Parses the string to create a BinaryFunctor that takes arguments of the given types.
<R> Generator<R>	parseGenerator(java.lang.String str, java.lang.Class<R> returnType) Parses the string to create a Generator.
<T,R> UnaryFunctor<T,R>	parseUnary(java.lang.String str, java.lang.Class<T> argType, java.lang.Class<T> returnType) Parses the string to create a UnaryFunctor that takes an argument of the given type.

Some of the Methods inherited from class net.sf.jga.parser.FunctorParser

checkReservedNames, getReturnType, parseBinary, parseBinary, parseGenerator, parseGenerator, parseUnary, parseUnary

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericParser

public GenericParser()

GenericParser

public GenericParser(java.io.InputStream is)

GenericParser

public GenericParser(java.io.Reader reader)

GenericParser

public GenericParser(FunctorParserTokenManager tm)

Method Detail

getInstance

public static GenericParser getInstance()

parseGenerator

public <R> Generator<R> parseGenerator(java.lang.String str,
                                       java.lang.Class<R> returnType)
                            throws java.lang.ClassCastException,
                                   

Parses the string to create a Generator.



Throws:
java.lang.ClassCastException
ParseException





parseUnary
public <T,R> UnaryFunctor<T,R> parseUnary(java.lang.String str,
                                          java.lang.Class<T> argType,
                                          java.lang.Class<T> returnType)
                             throws java.lang.ClassCastException,
                                    ParseException

Parses the string to create a UnaryFunctor that takes an argument of the
 given type.



Throws:
java.lang.ClassCastException
ParseException





parseBinary
public <T1,T2,R> BinaryFunctor<T1,T2,R> parseBinary(java.lang.String str,
                                                    java.lang.Class<T1> arg1Type,
                                                    java.lang.Class<T2> arg2Type,
                                                    java.lang.Class<R> returnType)
                                   throws java.lang.ClassCastException,
                                          ParseException

Parses the string to create a BinaryFunctor that takes arguments of the
 given types.



Throws:
java.lang.ClassCastException
ParseException