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add trivial left-recursion test case

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This commit is contained in:
Sven M. Hallberg 2013-01-10 00:08:07 +01:00
parent fdf76a0910
commit 0497cdb08b
1 changed files with 12 additions and 0 deletions
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12
src/t_parser.c
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@ -365,6 +365,17 @@ static void test_not(void) {
g_check_parse_ok(not_2, "a++b", 4, "(u0x61 <2b.2b> u0x62)"); g_check_parse_ok(not_2, "a++b", 4, "(u0x61 <2b.2b> u0x62)");
} }
static void test_leftrec(void) {
const HParser *a_ = h_ch('a');
HParser *lr_ = h_indirect();
h_bind_indirect(lr_, h_choice(h_sequence(lr_, a_, NULL), a_, NULL));
g_check_parse_ok(lr_, "a", 1, "(u0x61)");
g_check_parse_ok(lr_, "aa", 2, "(u0x61 u0x61)");
g_check_parse_ok(lr_, "aaa", 3, "((u0x61 u0x61) u0x61)");
}
void register_parser_tests(void) { void register_parser_tests(void) {
g_test_add_func("/core/parser/token", test_token); g_test_add_func("/core/parser/token", test_token);
g_test_add_func("/core/parser/ch", test_ch); g_test_add_func("/core/parser/ch", test_ch);
@ -406,4 +417,5 @@ void register_parser_tests(void) {
g_test_add_func("/core/parser/and", test_and); g_test_add_func("/core/parser/and", test_and);
g_test_add_func("/core/parser/not", test_not); g_test_add_func("/core/parser/not", test_not);
g_test_add_func("/core/parser/ignore", test_ignore); g_test_add_func("/core/parser/ignore", test_ignore);
g_test_add_func("/core/parser/leftrec", test_leftrec);
} }