directRecursion {xegaBNF}R Documentation

Which production rules contain a direct recursion?

Description

Which production rules contain a direct recursion?

Usage

directRecursion(G)

Arguments

G

A compiled context-free grammar.

Details

Direct recursion means the nonterminal on the LHS is also a symbol on RHS of production rule.

Value

Vector of booleans.

See Also

Other Compilation of short production table: allTerminal(), cL(), expandGrid(), expandRules(), findNextRuleForExpansion(), finiteRulesOfG(), nonTerminalsOfG(), smallestRules()

Examples

g<-compileBNF(booleanGrammar())
directRecursion(g)


[Package xegaBNF version 1.0.0.5 Index]