eu.bandm.tscore.base

Class Translet.OptionParser<D>

java.lang.Object

eu.bandm.tscore.base.Translet.Parser<D>

eu.bandm.tscore.base.Translet.OptionParser<D>

Enclosing class:

Translet

public static class Translet.OptionParser<D>
extends Translet.Parser<D>

Option parser, in greedy and non-deterministic variant, with or without default value.

Field Summary

Fields

Modifier and Type	Field and Description
protected D	deflt Default value, returned when sub-parser did not match.
protected boolean	greedy Whether parser behaves greedily or non-deterministically.
protected Translet.Parser<D>	sub The sub-parser to parse or ski.

Constructor Summary

Constructors

Constructor and Description
OptionParser(Translet.Parser<D> sub, D deflt, boolean greedy) Constructor called by the factory methods.

Method Summary

Modifier and Type	Method and Description
Format	name(boolean full, Map<Translet.Recursive,String> names) Returns a user-readable text representation.
Set<Translet.State<D>>	parseOneState(Translet.State<?> inState, Set<Translet.Alternative> alternatives) Calculate a set of possible successor states by applying this parser to the incoming state and append all altenatives found underways to the parameter "alternatives".
Translet.Parser<D>	stripOpt() Returns the first nested parser which is NOT an Translet.OptionParser.
String	unparse(Object key) Reverse the parsing process (as far as possible) and deliver a string representation which when parsed delivered the parse result.

Methods inherited from class eu.bandm.tscore.base.Translet.Parser

executeStoring, isTerminal, mparse, name, parseEpsilon, toString, toString, wrapResult

Methods inherited from class java.lang.Object

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

Field Detail

sub

protected Translet.Parser<D> sub

The sub-parser to parse or ski.

deflt

@Opt
protected D deflt

Default value, returned when sub-parser did not match.

greedy

protected boolean greedy

Whether parser behaves greedily or non-deterministically. In the latter case it returns two results when the sub-parser matches: One with and one without this match.

Constructor Detail

OptionParser

public OptionParser(Translet.Parser<D> sub,
                    @Opt
                    D deflt,
                    boolean greedy)

Constructor called by the factory methods.

Method Detail

stripOpt

public Translet.Parser<D> stripOpt()

Description copied from class: Translet.Parser

Returns the first nested parser which is NOT an Translet.OptionParser.

Overrides:

stripOpt in class Translet.Parser<D>

unparse

public String unparse(Object key)

Description copied from class: Translet.Parser

Reverse the parsing process (as far as possible) and deliver a string representation which when parsed delivered the parse result.

Specified by:

unparse in class Translet.Parser<D>

parseOneState

public Set<Translet.State<D>> parseOneState(Translet.State<?> inState,
                                            Set<Translet.Alternative> alternatives)

Description copied from class: Translet.Parser

Calculate a set of possible successor states by applying this parser to the incoming state and append all altenatives found underways to the parameter "alternatives". This method is specific to and overridden by the subclasses of Parser.

Specified by:

parseOneState in class Translet.Parser<D>

name

public Format name(boolean full,
                   Map<Translet.Recursive,String> names)

Returns a user-readable text representation. for this class it is not the reverse of a constructor call, but a symbolic representation "[content]?" for the non-greedy and . "[content]?_" for the greedy variant.

Specified by:

name in class Translet.Parser<D>

Parameters:

full - whether storing operators do appear in the rendering.

names - map to handle recursive loops in the parser structure.