Loyc.LLParserGenerator.RuleRef Class Reference

Represents a nonterminal, which is a reference to a rule. More...

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Source file:

• /Main/LLLPG/RuleAndPreds/Predicates.cs

Inheritance diagram for Loyc.LLParserGenerator.RuleRef:

Remarks

Represents a nonterminal, which is a reference to a rule.

Public fields
new Rule	Rule
VList< LNode >	Params = VList<LNode>.Empty
bool	IsInline = null
Public fields inherited from Loyc.LLParserGenerator.Pred
LNode	PreAction
LNode	PostAction
Symbol	VarLabel
bool	VarIsList
Func< LNode, LNode >	ResultSaver
	A function that saves the result produced by the matching code of this predicate (null if the result is not saved). For example, if the parser generator is given the predicate @[ x='a'..'z' ], the default matching code will be @(Match('a', 'z')), and ResultSaver will be set to a function that receives this matching code and returns @(x = Match('a', 'z')) in response. More...

Properties
override bool	IsNullable [get]
Properties inherited from Loyc.LLParserGenerator.Pred
LNode	Basis [get, set]
abstract bool	IsNullable [get]
	Returns true if this predicate can match an empty input. More...
object	Location [get]
Properties inherited from Loyc.IHasLocation
object	Location [get]

Public Member Functions
override void	Call (PredVisitor visitor)
	RuleRef (LNode basis, Rule rule)
override string	ToString ()
override string	ChooseGotoLabel ()
	Optional. If this predicate represents the matching code for a branch of an Alts and this code is reached through a goto statement, this method is used to select a label name. Supported by RuleRef. More...
Public Member Functions inherited from Loyc.LLParserGenerator.Pred
	Pred (LNode basis)
LNode	AutoSaveResult (LNode matchingCode)
virtual Pred	Clone ()
	Deep-clones a predicate tree. Terminal sets and Nodes referenced by the tree are not cloned; the clone's value of Next will be null. The same Pred cannot appear in two places in a tree, so you must clone before re-use. More...
string	ToStringWithPosition ()

Additional Inherited Members
Static Public Member Functions inherited from Loyc.LLParserGenerator.Pred
static Seq	operator+ (char a, Pred b)
static Seq	operator+ (Pred a, char b)
static Seq	operator+ (Pred a, Pred b)
static Pred	operator| (char a, Pred b)
static Pred	operator| (Pred a, char b)
static Pred	operator| (Pred a, Pred b)
static Pred	operator/ (Pred a, Pred b)
static Pred	operator+ (Pred a)
static Pred	Or (Pred a, Pred b, bool slashJoined)
static Pred	Or (Pred a, Pred b, bool slashJoined, LNode basis, BranchMode aMode=BranchMode.None, BranchMode bMode=BranchMode.None, IMessageSink sink=null)
static Alts	Star (Pred contents, bool?greedy=null)
static Alts	Opt (Pred contents, bool?greedy=null)
static Seq	Plus (Pred contents, bool?greedy=null)
static TerminalPred	Range (char lo, char hi)
static TerminalPred	Set (IPGTerminalSet set)
static TerminalPred	Set (string set)
static TerminalPred	Set (params LNode[] s)
static TerminalPred	Not (params LNode[] s)
static TerminalPred	Char (char c)
static TerminalPred	Chars (params char[] c)
static Seq	Seq (string s, LNode basis=null)
static Rule	Rule (string name, Pred pred, bool isStartingRule=false, bool isToken=false, int maximumK=-1)
static Pred	operator+ (LNode pre, Pred p)
static Pred	operator+ (Pred p, LNode post)
static LNode	MergeActions (LNode action, LNode action2)
static AndPred	And (object test)
static AndPred	AndNot (object test)
static Pred	Set (string varName, Pred pred)
static Pred	SetVar (string varName, Pred pred)
static Pred	AddSet (string varName, Pred pred)
static Pred	Op (string varName, Symbol @operator, Pred pred)

Member Function Documentation

override string Loyc.LLParserGenerator.RuleRef.ChooseGotoLabel ( )

inlinevirtual

Optional. If this predicate represents the matching code for a branch of an Alts and this code is reached through a goto statement, this method is used to select a label name. Supported by RuleRef.

Returns

A label name, or null if the predicate did not choose one.

Reimplemented from Loyc.LLParserGenerator.Pred.