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 #ifndef _LIBSAPLING_PARSER_GRAMMAR_H_

 #define _LIBSAPLING_PARSER_GRAMMAR_H_


 #include "libsapling/dm/graph.h"


 typedef struct grammar *grammar_t;


 grammar_t new_grammar(node_t *productions, int num_terminals, int num_symbols);


 void delete_grammar(grammar_t g);


 node_t *grammar__productions(grammar_t g);


 int grammar__num_terminals(grammar_t g);


 int grammar__num_nonterminals(grammar_t g);


 int grammar__num_symbols(grammar_t g);


 int grammar__is_terminal(grammar_t g, int symbol);


 #endif

grammar__num_terminals
int grammar__num_terminals(grammar_t g)
Returns the number of terminals in the grammar.

grammar__productions
node_t * grammar__productions(grammar_t g)
Returns the grammar's path of productions.

delete_grammar
void delete_grammar(grammar_t g)
Frees the memory previously allocated on the heap for a grammar with new_grammar.

grammar__is_terminal
int grammar__is_terminal(grammar_t g, int symbol)
Returns whether the symbol is a terminal in the grammar.

grammar__num_symbols
int grammar__num_symbols(grammar_t g)
Returns the sum of the number of terminals and nonterminals in the grammar.

new_grammar
grammar_t new_grammar(node_t *productions, int num_terminals, int num_symbols)
Allocates a new grammar on the heap.

grammar__num_nonterminals
int grammar__num_nonterminals(grammar_t g)
Returns the number of nonterminals in the grammar.

graph.h
Graph implementation.