Loyc.LLParserGenerator.IPGTerminalSet Interface Reference

This interface represents a set of terminals (and only a set of terminals, unlike TerminalPred which includes actions and a Basis Node). Typical lexers and parsers use PGIntSet and PGNodeSet, respectively. More...

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Source file:

• /Main/LLLPG/CoreEngine/IPGTerminalSet.cs

Inheritance diagram for Loyc.LLParserGenerator.IPGTerminalSet:

Remarks

This interface represents a set of terminals (and only a set of terminals, unlike TerminalPred which includes actions and a Basis Node). Typical lexers and parsers use PGIntSet and PGNodeSet, respectively.

Properties
bool	IsInverted [get]
bool	ContainsEOF [get]
bool	IsEmptySet [get]
bool	ContainsEverything [get]
IPGTerminalSet	Empty [get]
	Returns the empty set. More...

Public Member Functions
IPGTerminalSet	UnionCore (IPGTerminalSet other)
	Merges two sets. More...
IPGTerminalSet	IntersectionCore (IPGTerminalSet other, bool subtract=false, bool subtractThis=false)
	Computes the intersection of two sets. More...
IPGTerminalSet	WithEOF (bool wantEOF=true)
	Adds or removes EOF from the set. If the set doesn't change, this method may return this. More...
IPGTerminalSet	Inverted ()
	Creates a version of the set with IsInverted toggled. More...

Member Function Documentation

IPGTerminalSet Loyc.LLParserGenerator.IPGTerminalSet.IntersectionCore	(	IPGTerminalSet	other,
		bool	subtract = false,
		bool	subtractThis = false
	)

Computes the intersection of two sets.

Returns

A set that has only items that are in both sets, or null if other's type is not supported.

IPGTerminalSet Loyc.LLParserGenerator.IPGTerminalSet.Inverted

(

)

Creates a version of the set with IsInverted toggled.

IPGTerminalSet Loyc.LLParserGenerator.IPGTerminalSet.UnionCore

(

IPGTerminalSet

other

)

Merges two sets.

Returns

The combination of the two sets, or null if other's type is not supported.

Implemented in Loyc.LLParserGenerator.PGNodeSet.

IPGTerminalSet Loyc.LLParserGenerator.IPGTerminalSet.WithEOF

(

bool

wantEOF = true

)

Adds or removes EOF from the set. If the set doesn't change, this method may return this.

Implemented in Loyc.LLParserGenerator.PGNodeSet, and Loyc.LLParserGenerator.PGIntSet.

Property Documentation

IPGTerminalSet Loyc.LLParserGenerator.IPGTerminalSet.Empty

get

Returns the empty set.