/**
* test_visitor_register_identity:
* @fn test_visitor_register_identity
* Tests whether compilerkit_visitor_register_identity function works as intended.
* @pre None
* @param None
* @return void
*/
void test_visitor_register_identity (void)
{
GObject *symbol;
GObject *empty_set;
CompilerKitVisitor *visitor;
g_test_message ("Testing visitor register identity");
g_test_timer_start ();
symbol = compilerkit_symbol_new ('a');
empty_set = compilerkit_empty_set_get_instance ();
visitor = compilerkit_visitor_new();
// Register the identity function (it returns whatever GObject* gets as a parameter during the visit)
compilerkit_visitor_register_identity (visitor, COMPILERKIT_TYPE_EMPTY_SET);
// Since we didn't register the symbol, the visitor should return NULL
g_assert (compilerkit_visitor_visit (visitor, symbol) == NULL);
// The visitor should produce symbol here, since we registered the identity function for the symbol class.
g_assert (compilerkit_visitor_visit (visitor, empty_set) == empty_set);
// Decrease the reference count for objects to free them.
g_object_unref (symbol);
g_object_unref (empty_set);
g_object_unref (visitor);
// This test shouldn't take too long to run
g_assert_cmpfloat(g_test_timer_elapsed (), <=, 1);
}
/* Construct a visitor that checks whether symbol is a symbol. */
static CompilerKitVisitor* check_symbol ()
{
CompilerKitVisitor *visitor;
visitor = compilerkit_visitor_new();
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_SYMBOL, symbol_check);
return visitor;
}
/**
* compilerkit_to_nfa_visitor:
* @fn compilerkit_to_nfa_visitor
* Construct a to_nfa visitor.
* @pre None
* @param None
* @return A CompilerKitVisitor*.
* @memberof CompilerKitVisitor
*/
CompilerKitVisitor *compilerkit_to_nfa_visitor ()
{
CompilerKitVisitor *visitor;
visitor = compilerkit_visitor_new();
/* Regular expression visitors */
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_ALTERNATION, to_nfa_alternation);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_CONCATENATION, to_nfa_concatenation);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_KLEENE_STAR, to_nfa_kleene_star);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_COMPLEMENT, to_nfa_complement);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_EMPTY_SET, to_nfa_empty_set);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_EMPTY_STRING, to_nfa_empty_string);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_SYMBOL, to_nfa_symbol);
/* CFG visitors */
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_GRAMMAR, to_nfa_grammar);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_NONTERMINAL, to_nfa_concatenation);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_TERMINAL, to_nfa_kleene_star);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_PRODUCTION, to_nfa_production);
return visitor;
}
/* StringBuilder visitor */
static CompilerKitVisitor *compilerkit_string_builder_visitor ()
{
CompilerKitVisitor *visitor;
visitor = compilerkit_visitor_new();
/* Regular expression visitors */
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_ALTERNATION, string_builder_alternation);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_CONCATENATION, string_builder_concatenation);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_KLEENE_STAR, string_builder_kleene_star);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_COMPLEMENT, string_builder_complement);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_EMPTY_SET, string_builder_empty_set);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_EMPTY_STRING, string_builder_empty_string);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_SYMBOL, string_builder_symbol);
/* CFG visitors */
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_GRAMMAR, string_builder_grammar);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_NONTERMINAL, string_builder_nonterminal);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_TERMINAL, string_builder_terminal);
compilerkit_visitor_register (visitor, COMPILERKIT_TYPE_PRODUCTION, string_builder_production);
compilerkit_visitor_set_state (visitor, g_string_new(""));
return visitor;
}
