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authordaurnimator <quae@daurnimator.com>2017-05-11 23:07:52 +1000
committerdaurnimator <quae@daurnimator.com>2017-05-11 23:07:52 +1000
commit68fe72a336c7e732164e2eacfdc8c86a25939957 (patch)
tree2312dd7375063d30966f5cb721d1db93999c8954 /src
parent992c58899b32c919d3c5c1c60c14c7c073c5d54c (diff)
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src/ltable.js: Iterate past dead keys
Diffstat (limited to 'src')
-rw-r--r--src/ltable.js26
1 files changed, 15 insertions, 11 deletions
diff --git a/src/ltable.js b/src/ltable.js
index 0619efe..5eae939 100644
--- a/src/ltable.js
+++ b/src/ltable.js
@@ -150,9 +150,10 @@ const luaH_getn = function(t) {
const luaH_next = function(L, table, keyI) {
let keyO = L.stack[keyI];
- let iterresult;
+ let iterator;
+ /* Iterate until we find the current key */
if (keyO.type === CT.LUA_TNIL) {
- iterresult = table.strong.keys().next();
+ iterator = table.strong.keys();
} else {
let hash = table_hash(keyO);
@@ -160,18 +161,21 @@ const luaH_next = function(L, table, keyI) {
/* item not in table */
return ldebug.luaG_runerror(L, defs.to_luastring("invalid key to 'next'"))
- let indexes = table.strong.keys();
- while (1) {
- let e = indexes.next();
+ iterator = table.strong.keys();
+ do {
+ let e = iterator.next();
if (e.done)
throw "unreachable";
- else if (e.value == hash)
- break;
- }
- iterresult = indexes.next();
+ } while(e.value !== hash);
}
- if (iterresult.done)
- return false;
+ /* Now iterator is positioned at current key.
+ * Iterate until either out of keys, or until finding a non-dead key */
+ let iterresult
+ do {
+ iterresult = indexes.next();
+ if (iterresult.done)
+ return false;
+ } while(iterresult.value.ttisdeadkey());
let entry = table.strong.get(iterresult.value);
L.stack[keyI] = new lobject.TValue(entry.key.type, entry.key.value);