Loyc.LLParserGenerator.LLParserGenerator.KthSet Class Reference

Represents the possible interpretations of a single input character, in terms of transitions in the grammar. More...

---

Source file:

• /Main/LLLPG/CoreEngine/KthSet.cs

Remarks

Represents the possible interpretations of a single input character, in terms of transitions in the grammar.

For example, suppose the grammar is as follows (where "strings" are actually aliases for tokens):

rule For   @[ "for" ($id "in" $collection | $id '=' range) ];
rule Range @[ start ".." stop ];

If the starting position is right after "for", then ComputeNextSet will generate two Cases, one at $id."in" $collection and another at .'=' stop. In both cases, the Set is $id, so KthSet.Set will also be $id.

Public fields
int	LA = -1
List< Transition >	Cases = new List<Transition>()
IPGTerminalSet	Set
Set< AndPred >	AndReq
KthSet	Prev
int	Alt
bool	IsNongreedyExit

Properties
bool	HasAnyAndPreds [get]

Public Member Functions
	KthSet (KthSet prev)
	KthSet (Pred start, int alt, IPGTerminalSet emptySet, bool isNongreedyExit=false)
void	UpdateSet (bool addEOF)
override string	ToString ()
KthSet	Clone (bool update)