[njs] Added njs_vm_object_keys().

[Dmitry Volyntsev]

details:   https://hg.nginx.org/njs/rev/dc7d94c05669
branches:  
changeset: 1592:dc7d94c05669
user:      Dmitry Volyntsev <xeioex at nginx.com>
date:      Mon Jan 11 19:53:10 2021 +0000
description:
Added njs_vm_object_keys().

diffstat:

 src/njs.h    |   2 ++
 src/njs_vm.c |  17 +++++++++++++++++
 2 files changed, 19 insertions(+), 0 deletions(-)

diffs (39 lines):

diff -r 1b99785e0711 -r dc7d94c05669 src/njs.h
--- a/src/njs.h	Mon Jan 11 19:53:09 2021 +0000
+++ b/src/njs.h	Mon Jan 11 19:53:10 2021 +0000
@@ -402,6 +402,8 @@ NJS_EXPORT njs_int_t njs_value_is_buffer
 
 NJS_EXPORT njs_int_t njs_vm_object_alloc(njs_vm_t *vm, njs_value_t *retval,
     ...);
+NJS_EXPORT njs_value_t *njs_vm_object_keys(njs_vm_t *vm, njs_value_t *value,
+    njs_value_t *retval);
 NJS_EXPORT njs_value_t *njs_vm_object_prop(njs_vm_t *vm,
     njs_value_t *value, const njs_str_t *key, njs_opaque_value_t *retval);
 
diff -r 1b99785e0711 -r dc7d94c05669 src/njs_vm.c
--- a/src/njs_vm.c	Mon Jan 11 19:53:09 2021 +0000
+++ b/src/njs_vm.c	Mon Jan 11 19:53:10 2021 +0000
@@ -976,6 +976,23 @@ done:
 }
 
 
+njs_value_t *
+njs_vm_object_keys(njs_vm_t *vm, njs_value_t *value, njs_value_t *retval)
+{
+    njs_array_t  *keys;
+
+    keys = njs_value_own_enumerate(vm, value, NJS_ENUM_KEYS,
+                                   NJS_ENUM_STRING, 0);
+    if (njs_slow_path(keys == NULL)) {
+        return NULL;
+    }
+
+    njs_set_array(retval, keys);
+
+    return retval;
+}
+
+
 njs_int_t
 njs_vm_array_alloc(njs_vm_t *vm, njs_value_t *retval, uint32_t spare)
 {