details: http://hg.nginx.org/njs/rev/76e139b439ad
branches:
changeset: 658:76e139b439ad
user: Dmitry Volyntsev <xeioex@nginx.com>
date: Thu Nov 15 20:31:35 2018 +0300
description:
Handling non-object values in Object.keys().

This fixes #54 issue on Github.

diffstat:

njs/njs_object.c | 133 +++++++++++++++++++++++++++++++---------------
njs/njs_object.h | 2 +-
njs/test/njs_unit_test.c | 21 ++++++-
3 files changed, 108 insertions(+), 48 deletions(-)

diffs (226 lines):

diff -r 5f0090c02589 -r 76e139b439ad njs/njs_object.c
--- a/njs/njs_object.c Thu Nov 15 20:31:35 2018 +0300
+++ b/njs/njs_object.c Thu Nov 15 20:31:35 2018 +0300
@@ -865,7 +865,7 @@ njs_object_keys(njs_vm_t *vm, njs_value_

value = njs_arg(args, nargs, 1);

- if (!njs_is_object(value)) {
+ if (njs_is_null_or_void(value)) {
njs_type_error(vm, "cannot convert %s argument to object",
njs_type_string(value->type));

@@ -874,7 +874,6 @@ njs_object_keys(njs_vm_t *vm, njs_value_

keys = njs_object_keys_array(vm, value);
if (keys == NULL) {
- njs_memory_error(vm);
return NXT_ERROR;
}

@@ -887,43 +886,69 @@ njs_object_keys(njs_vm_t *vm, njs_value_


njs_array_t *
-njs_object_keys_array(njs_vm_t *vm, const njs_value_t *object)
+njs_object_keys_array(njs_vm_t *vm, const njs_value_t *value)
{
- uint32_t i, n, keys_length, array_length;
- njs_value_t *value;
+ uint32_t i, n, length, keys_length;
+ njs_value_t *string;
njs_array_t *keys, *array;
nxt_lvlhsh_t *hash;
njs_object_prop_t *prop;
+ njs_string_prop_t string_prop;
nxt_lvlhsh_each_t lhe;

array = NULL;
+ length = 0;
keys_length = 0;
- array_length = 0;
-
- if (njs_is_array(object)) {
- array = object->data.u.array;
- array_length = array->length;
-
- for (i = 0; i < array_length; i++) {
+
+ switch (value->type) {
+ case NJS_ARRAY:
+ array = value->data.u.array;
+ length = array->length;
+
+ for (i = 0; i < length; i++) {
if (njs_is_valid(&array->start[i])) {
keys_length++;
}
}
+
+ break;
+
+ case NJS_STRING:
+ case NJS_OBJECT_STRING:
+ if (value->type == NJS_OBJECT_STRING) {
+ string = &value->data.u.object_value->value;
+
+ } else {
+ string = (njs_value_t *) value;
+ }
+
+ length = njs_string_prop(&string_prop, string);
+ keys_length += length;
+ break;
+
+ default:
+ break;
}

- nxt_lvlhsh_each_init(&lhe, &njs_object_hash_proto);
-
- hash = &object->data.u.object->hash;
-
- for ( ;; ) {
- prop = nxt_lvlhsh_each(hash, &lhe);
-
- if (prop == NULL) {
- break;
- }
-
- if (prop->type != NJS_WHITEOUT && prop->enumerable) {
- keys_length++;
+ if (nxt_fast_path(njs_is_object(value))) {
+ nxt_lvlhsh_each_init(&lhe, &njs_object_hash_proto);
+ hash = &value->data.u.object->hash;
+
+ } else {
+ hash = NULL;
+ }
+
+ if (nxt_fast_path(hash != NULL)) {
+ for ( ;; ) {
+ prop = nxt_lvlhsh_each(hash, &lhe);
+
+ if (prop == NULL) {
+ break;
+ }
+
+ if (prop->type != NJS_WHITEOUT && prop->enumerable) {
+ keys_length++;
+ }
}
}

@@ -934,28 +959,48 @@ njs_object_keys_array(njs_vm_t *vm, cons

n = 0;

- for (i = 0; i < array_length; i++) {
- if (njs_is_valid(&array->start[i])) {
- value = &keys->start[n++];
- /*
- * The maximum array index is 4294967294, so
- * it can be stored as a short string inside value.
- */
- njs_uint32_to_string(value, i);
+ switch (value->type) {
+ case NJS_ARRAY:
+ for (i = 0; i < length; i++) {
+ if (njs_is_valid(&array->start[i])) {
+ njs_uint32_to_string(&keys->start[n++], i);
+ }
}
+
+ break;
+
+ case NJS_STRING:
+ case NJS_OBJECT_STRING:
+ if (value->type == NJS_OBJECT_STRING) {
+ string = &value->data.u.object_value->value;
+
+ } else {
+ string = (njs_value_t *) value;
+ }
+
+ for (i = 0; i < length; i++) {
+ njs_uint32_to_string(&keys->start[n++], i);
+ }
+
+ break;
+
+ default:
+ break;
}

- nxt_lvlhsh_each_init(&lhe, &njs_object_hash_proto);
-
- for ( ;; ) {
- prop = nxt_lvlhsh_each(hash, &lhe);
-
- if (prop == NULL) {
- break;
- }
-
- if (prop->type != NJS_WHITEOUT && prop->enumerable) {
- njs_string_copy(&keys->start[n++], &prop->name);
+ if (nxt_fast_path(hash != NULL)) {
+ nxt_lvlhsh_each_init(&lhe, &njs_object_hash_proto);
+
+ for ( ;; ) {
+ prop = nxt_lvlhsh_each(hash, &lhe);
+
+ if (prop == NULL) {
+ break;
+ }
+
+ if (prop->type != NJS_WHITEOUT && prop->enumerable) {
+ njs_string_copy(&keys->start[n++], &prop->name);
+ }
}
}

diff -r 5f0090c02589 -r 76e139b439ad njs/njs_object.h
--- a/njs/njs_object.h Thu Nov 15 20:31:35 2018 +0300
+++ b/njs/njs_object.h Thu Nov 15 20:31:35 2018 +0300
@@ -79,7 +79,7 @@ njs_object_t *njs_object_alloc(njs_vm_t
njs_object_t *njs_object_value_copy(njs_vm_t *vm, njs_value_t *value);
njs_object_t *njs_object_value_alloc(njs_vm_t *vm, const njs_value_t *value,
nxt_uint_t type);
-njs_array_t *njs_object_keys_array(njs_vm_t *vm, const njs_value_t *object);
+njs_array_t *njs_object_keys_array(njs_vm_t *vm, const njs_value_t *value);
njs_ret_t njs_value_property(njs_vm_t *vm, njs_value_t *value,
const njs_value_t *property, njs_value_t *retval);
njs_object_prop_t *njs_object_property(njs_vm_t *vm, const njs_object_t *obj,
diff -r 5f0090c02589 -r 76e139b439ad njs/test/njs_unit_test.c
--- a/njs/test/njs_unit_test.c Thu Nov 15 20:31:35 2018 +0300
+++ b/njs/test/njs_unit_test.c Thu Nov 15 20:31:35 2018 +0300
@@ -7236,11 +7236,26 @@ static njs_unit_test_t njs_test[] =
{ nxt_string("Object.keys()"),
nxt_string("TypeError: cannot convert undefined argument to object") },

- { nxt_string("Object.keys('a')"),
- nxt_string("TypeError: cannot convert string argument to object") },
+ { nxt_string("Object.keys('αβZ')"),
+ nxt_string("0,1,2") },
+
+ { nxt_string("Object.keys(new String('αβZ'))"),
+ nxt_string("0,1,2") },
+
+ { nxt_string("var s = new String('αβZ'); s.a = 1; Object.keys(s)"),
+ nxt_string("0,1,2,a") },
+
+ { nxt_string("var r = new RegExp('αbc'); r.a = 1; Object.keys(r)"),
+ nxt_string("a") },
+
+ { nxt_string("Object.keys(Object.create(new String('abc')))"),
+ nxt_string("") },

{ nxt_string("Object.keys(1)"),
- nxt_string("TypeError: cannot convert number argument to object") },
+ nxt_string("") },
+
+ { nxt_string("Object.keys(true)"),
+ nxt_string("") },

{ nxt_string("var o = {}; Object.defineProperty(o, 'a', {}); o.a"),
nxt_string("undefined") },
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