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...

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

◆ IntersectionCore()

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.

◆ Inverted()

IPGTerminalSet Loyc.LLParserGenerator.IPGTerminalSet.Inverted ( )

Creates a version of the set with IsInverted toggled.

◆ UnionCore()

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.

◆ WithEOF()

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

◆ Empty

IPGTerminalSet Loyc.LLParserGenerator.IPGTerminalSet.Empty

get

Returns the empty set.