grammar::properties::NullableNonterminals Class Reference

#include <NullableNonterminals.h>

Static Public Member Functions
template<class T , class TerminalSymbolType = typename grammar::TerminalSymbolTypeOfGrammar < T >, class NonterminalSymbolType = typename grammar::NonterminalSymbolTypeOfGrammar < T >>
static ext::set< NonterminalSymbolType >	getNullableNonterminals (const T &grammar)

Detailed Description

Implements algorithms from Melichar, chapter 2.2

Member Function Documentation

getNullableNonterminals()

template<class T , class TerminalSymbolType , class NonterminalSymbolType >

ext::set< NonterminalSymbolType > grammar::properties::NullableNonterminals::getNullableNonterminals ( const T &  grammar )

static

Retrieve all nullable nonterminals from grammar Nullable nonterminal is such nonterminal A for which holds that A ->^* \eps

Source: Melichar, algorithm 2.4, step 1

Template Parameters

T	the type of the tested grammar
TerminalSymbolType	the type of terminals in the tested grammar
NonterminalSymbolType	the type of nonterminals in the tested grammar

Parameters

grammar

the tested grammar

Returns

set of nullable nonterminals from the grammar

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The documentation for this class was generated from the following file:

• alib2algo/src/grammar/properties/NullableNonterminals.h