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Store hash key/value pairs in one ordered vector

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Replace the parallel std::vector<json_object_ptr> keys / values on
json_hash with a single std::vector<json_entry>, where json_entry is
a small {key, value} aggregate. This still preserves insertion order
(the property the parallel vectors were providing) but removes the
"keep two vectors in lockstep" pattern, and call sites can now use
range-for with structured bindings:

    for (auto &[k, v] : o->entries()) { ... }

Side effects:

* sizeof(json_hash) drops from 72 to 48 bytes (one fewer vector
  header), matching json_array.
* The keys() and values() accessors on json_object are replaced by a
  single entries() accessor returning std::vector<json_entry>&.
* All call sites were swept from the old paired-index pattern
  (`o->keys()[i]` / `o->values()[i]`) to entry-based access. Where the
  original pattern relied on `nprop = 0` to short-circuit iteration on
  a null or non-hash `properties`, the rewrite now guards the loop
  explicitly with `if (o->type == JSON_HASH)` so that calling
  entries() doesn't trip the asserting downcast.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Erica Fischer
2026-05-30 17:49:13 -07:00
co-authored by Cursor
parent f366b2c4aa
commit 4d9a48c3d4
11 changed files with 122 additions and 137 deletions
Download Patch File Download Diff File Expand all files Collapse all files
attribute.cpp
+6 -7
View File
@@ -55,20 +55,19 @@ void set_attribute_accum(std::unordered_map<std::string, attribute_op> &attribut
exit(EXIT_JSON);
}
for (size_t i = 0; i < o->keys().size(); i++) {
json_object_ptr k = o->keys()[i];
json_object_ptr v = o->values()[i];
if (k->type != JSON_STRING) {
size_t i = 0;
for (const auto &e : o->entries()) {
if (e.key->type != JSON_STRING) {
fprintf(stderr, "%s: -E%s: key %zu not a string\n", *argv, arg, i);
exit(EXIT_JSON);
}
if (v->type != JSON_STRING) {
if (e.value->type != JSON_STRING) {
fprintf(stderr, "%s: -E%s: value %zu not a string\n", *argv, arg, i);
exit(EXIT_JSON);
}
set_attribute_accum(attribute_accum, k->string().c_str(), v->string().c_str());
set_attribute_accum(attribute_accum, e.key->string().c_str(), e.value->string().c_str());
i++;
}
return;