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Micro-optimization for JSON_STRICT when no optional key is used

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The previous commit introduced a loop on all input keys to check the
strict mode. We can avoid this if we don't expect an optional key. In
this case, we fallback to the previous method to compare the length of
the set of expected keys and the length of the parsed keys.
This commit is contained in:
Vincent Bernat 2014-02-15 17:44:02 +01:00
parent 7a0b9af662
commit 56a50e147d
1 changed files with 11 additions and 4 deletions
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9
src/pack_unpack.c
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@ -350,6 +350,7 @@ static int unpack_object(scanner_t *s, json_t *root, va_list *ap)
{
int ret = -1;
int strict = 0;
int gotopt = 0;
/* Use a set (emulated by a hashtable) to check that all object
keys are accessed. Checking that the correct number of keys
@ -406,7 +407,7 @@ static int unpack_object(scanner_t *s, json_t *root, va_list *ap)
next_token(s);
if(token(s) == '?') {
opt = 1;
opt = gotopt = 1;
next_token(s);
}
@ -437,11 +438,17 @@ static int unpack_object(scanner_t *s, json_t *root, va_list *ap)
const char *key;
json_t *value;
long unpacked = 0;
if (gotopt) {
/* We have optional keys, we need to iter on each key */
json_object_foreach(root, key, value) {
if(!hashtable_get(&key_set, key)) {
unpacked++;
}
}
} else {
/* No optional keys, we can just compare the number of items */
unpacked = (long)json_object_size(root) - (long)key_set.size;
}
if (unpacked) {
set_error(s, "<validation>", "%li object item(s) left unpacked", unpacked);
goto out;