com.svincent.moksa
Class PrologParser

java.lang.Object
  |
  +--com.svincent.moksa.WamObject
        |
        +--com.svincent.moksa.PrologParser

Direct Known Subclasses:

IsoPrologParser, MiniPrologParser

public abstract class PrologParser

extends WamObject

A parser for the Prolog language. There are two subclasses, MiniPrologParser, and ISOPrologParser, which parse part/all of the Prolog language, respectively.

This is an interface so that builtin terms and Moksa tools can parse Prolog source code.

Constructor Summary

PrologParser()

Method Summary

abstract PrologTerm	parseClause(Io.PrologInput in) Parse a Prolog clause.
PrologTerm	parseClause(Io io, java.lang.String term) Parses a Prolog clause, given a String.
PrologTerm[]	parseFile(Io.PrologInput in) Parses an entire file, quickly and succinctly, into a list of clauses
abstract PrologTerm	parseTerm(Io.PrologInput in) Parse a Prolog term.
PrologTerm	parseTerm(Io io, java.lang.String term) Parses a Prolog term, given a String.

Methods inherited from class com.svincent.moksa.WamObject

tag, tag

Methods inherited from class java.lang.Object

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

Constructor Detail

PrologParser

public PrologParser()

Method Detail

parseClause

public abstract PrologTerm parseClause(Io.PrologInput in)
                                throws java.io.IOException,
                                       PrologParseException

Parse a Prolog clause. This ends at the next end ('.') character, and typically contains something of the form "Term :- Term, Term."

Returns null on EOF.

parseTerm

public abstract PrologTerm parseTerm(Io.PrologInput in)
                              throws java.io.IOException,
                                     PrologParseException

Parse a Prolog term. This is the primitive term stuff we're all familiar with: atoms, integers, compound terms, floats, etc.

Returns null on EOF.

parseClause

public PrologTerm parseClause(Io io,
                              java.lang.String term)
                       throws java.io.IOException,
                              PrologParseException

Parses a Prolog clause, given a String.

parseTerm

public PrologTerm parseTerm(Io io,
                            java.lang.String term)
                     throws java.io.IOException,
                            PrologParseException

Parses a Prolog term, given a String.

parseFile

public PrologTerm[] parseFile(Io.PrologInput in)
                       throws java.io.IOException,
                              PrologParseException

Parses an entire file, quickly and succinctly, into a list of clauses