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out-of-memory handling in packrat backend

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This commit is contained in:
Sven M. Hallberg 2015-11-30 17:50:29 +01:00
parent 3fc56a0dc3
commit 5996477a5e
1 changed files with 9 additions and 0 deletions
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9
src/backends/packrat.c
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@ -254,6 +254,15 @@ static bool pos_equal(const void* key1, const void* key2) {
HParseResult *h_packrat_parse(HAllocator* mm__, const HParser* parser, HInputStream *input_stream) {
HArena * arena = h_new_arena(mm__, 0);
// out-of-memory handling
jmp_buf except;
h_arena_set_except(arena, &except);
if(setjmp(except)) {
h_delete_arena(arena);
return NULL;
}
HParseState *parse_state = a_new_(arena, HParseState, 1);
parse_state->cache = h_hashtable_new(arena, cache_key_equal, // key_equal_func
cache_key_hash); // hash_func