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deps: V8: backport 74571c8
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Original commit message:

    Fix preview of set entries

    Set entries return an array with the value as first and second entry.
    As such these are considered key value pairs to align with maps
    entries iterator.
    So far the return value was identical to the values iterator and that
    is misleading.

    This also adds tests to verify the results and improves the coverage
    a tiny bit by testing different iterators.

    Refs: #24629

    R=yangguo@chromium.org

    Change-Id: I669a724bb4afaf5a713e468b1f51691d22c25253
    Reviewed-on: https://chromium-review.googlesource.com/c/1350790
    Commit-Queue: Yang Guo <yangguo@chromium.org>
    Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
    Reviewed-by: Jakob Gruber <jgruber@chromium.org>
    Reviewed-by: Yang Guo <yangguo@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#59311}

Refs: v8/v8@74571c8

PR-URL: #25941
Fixes: #24629
Reviewed-By: Michaël Zasso <targos@protonmail.com>
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@BridgeAR @addaleax
BridgeAR authored and addaleax committed Feb 21, 2019
1 parent add0e84 commit a09fb30
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Showing 7 changed files with 279 additions and 30 deletions.
2 changes: 1 addition & 1 deletion common.gypi
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Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,7 @@

# Reset this number to 0 on major V8 upgrades.
# Increment by one for each non-official patch applied to deps/v8.
'v8_embedder_string': '-node.17',
'v8_embedder_string': '-node.18',

# Enable disassembler for `--print-code` v8 options
'v8_enable_disassembler': 1,
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1 change: 1 addition & 0 deletions deps/v8/AUTHORS
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Original file line number Diff line number Diff line change
Expand Up @@ -142,6 +142,7 @@ Rick Waldron <waldron.rick@gmail.com>
Rob Wu <rob@robwu.nl>
Robert Mustacchi <rm@fingolfin.org>
Robert Nagy <robert.nagy@gmail.com>
Ruben Bridgewater <ruben@bridgewater.de>
Ryan Dahl <ry@tinyclouds.org>
Sakthipriyan Vairamani (thefourtheye) <thechargingvolcano@gmail.com>
Sander Mathijs van Veen <sander@leaningtech.com>
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31 changes: 20 additions & 11 deletions deps/v8/src/api.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -7098,6 +7098,11 @@ enum class MapAsArrayKind {
kValues = i::JS_MAP_VALUE_ITERATOR_TYPE
};

enum class SetAsArrayKind {
kEntries = i::JS_SET_KEY_VALUE_ITERATOR_TYPE,
kValues = i::JS_SET_VALUE_ITERATOR_TYPE
};

i::Handle<i::JSArray> MapAsArray(i::Isolate* isolate, i::Object* table_obj,
int offset, MapAsArrayKind kind) {
i::Factory* factory = isolate->factory();
Expand Down Expand Up @@ -7207,13 +7212,14 @@ Maybe<bool> Set::Delete(Local<Context> context, Local<Value> key) {

namespace {
i::Handle<i::JSArray> SetAsArray(i::Isolate* isolate, i::Object* table_obj,
int offset) {
int offset, SetAsArrayKind kind) {
i::Factory* factory = isolate->factory();
i::Handle<i::OrderedHashSet> table(i::OrderedHashSet::cast(table_obj),
isolate);
// Elements skipped by |offset| may already be deleted.
int capacity = table->UsedCapacity();
int max_length = capacity - offset;
const bool collect_key_values = kind == SetAsArrayKind::kEntries;
int max_length = (capacity - offset) * (collect_key_values ? 2 : 1);
if (max_length == 0) return factory->NewJSArray(0);
i::Handle<i::FixedArray> result = factory->NewFixedArray(max_length);
int result_index = 0;
Expand All @@ -7224,6 +7230,7 @@ i::Handle<i::JSArray> SetAsArray(i::Isolate* isolate, i::Object* table_obj,
i::Object* key = table->KeyAt(i);
if (key == the_hole) continue;
result->set(result_index++, key);
if (collect_key_values) result->set(result_index++, key);
}
}
DCHECK_GE(max_length, result_index);
Expand All @@ -7239,7 +7246,8 @@ Local<Array> Set::AsArray() const {
i::Isolate* isolate = obj->GetIsolate();
LOG_API(isolate, Set, AsArray);
ENTER_V8_NO_SCRIPT_NO_EXCEPTION(isolate);
return Utils::ToLocal(SetAsArray(isolate, obj->table(), 0));
return Utils::ToLocal(
SetAsArray(isolate, obj->table(), 0, SetAsArrayKind::kValues));
}


Expand Down Expand Up @@ -9585,21 +9593,22 @@ v8::MaybeLocal<v8::Array> v8::Object::PreviewEntries(bool* is_key_value) {
i::Handle<i::JSWeakCollection>::cast(object), 0));
}
if (object->IsJSMapIterator()) {
i::Handle<i::JSMapIterator> iterator =
i::Handle<i::JSMapIterator>::cast(object);
i::Handle<i::JSMapIterator> it = i::Handle<i::JSMapIterator>::cast(object);
MapAsArrayKind const kind =
static_cast<MapAsArrayKind>(iterator->map()->instance_type());
static_cast<MapAsArrayKind>(it->map()->instance_type());
*is_key_value = kind == MapAsArrayKind::kEntries;
if (!iterator->HasMore()) return v8::Array::New(v8_isolate);
return Utils::ToLocal(MapAsArray(isolate, iterator->table(),
i::Smi::ToInt(iterator->index()), kind));
if (!it->HasMore()) return v8::Array::New(v8_isolate);
return Utils::ToLocal(
MapAsArray(isolate, it->table(), i::Smi::ToInt(it->index()), kind));
}
if (object->IsJSSetIterator()) {
i::Handle<i::JSSetIterator> it = i::Handle<i::JSSetIterator>::cast(object);
*is_key_value = false;
SetAsArrayKind const kind =
static_cast<SetAsArrayKind>(it->map()->instance_type());
*is_key_value = kind == SetAsArrayKind::kEntries;
if (!it->HasMore()) return v8::Array::New(v8_isolate);
return Utils::ToLocal(
SetAsArray(isolate, it->table(), i::Smi::ToInt(it->index())));
SetAsArray(isolate, it->table(), i::Smi::ToInt(it->index()), kind));
}
return v8::MaybeLocal<v8::Array>();
}
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230 changes: 228 additions & 2 deletions deps/v8/test/cctest/test-api.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -28778,7 +28778,7 @@ TEST(TestSetWasmThreadsEnabledCallback) {
CHECK(i_isolate->AreWasmThreadsEnabled(i_context));
}

TEST(PreviewSetIteratorEntriesWithDeleted) {
TEST(PreviewSetKeysIteratorEntriesWithDeleted) {
LocalContext env;
v8::HandleScope handle_scope(env->GetIsolate());
v8::Local<v8::Context> context = env.local();
Expand Down Expand Up @@ -28877,7 +28877,142 @@ TEST(PreviewSetIteratorEntriesWithDeleted) {
}
}

TEST(PreviewMapIteratorEntriesWithDeleted) {
TEST(PreviewSetValuesIteratorEntriesWithDeleted) {
LocalContext env;
v8::HandleScope handle_scope(env->GetIsolate());
v8::Local<v8::Context> context = env.local();

{
// Create set, delete entry, create iterator, preview.
v8::Local<v8::Object> iterator =
CompileRun("var set = new Set([1,2,3]); set.delete(1); set.values()")
->ToObject(context)
.ToLocalChecked();
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(!is_key);
CHECK_EQ(2, entries->Length());
CHECK_EQ(2, entries->Get(context, 0)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(3, entries->Get(context, 1)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
{
// Create set, create iterator, delete entry, preview.
v8::Local<v8::Object> iterator =
CompileRun("var set = new Set([1,2,3]); set.values()")
->ToObject(context)
.ToLocalChecked();
CompileRun("set.delete(1);");
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(!is_key);
CHECK_EQ(2, entries->Length());
CHECK_EQ(2, entries->Get(context, 0)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(3, entries->Get(context, 1)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
{
// Create set, create iterator, delete entry, iterate, preview.
v8::Local<v8::Object> iterator =
CompileRun("var set = new Set([1,2,3]); var it = set.values(); it")
->ToObject(context)
.ToLocalChecked();
CompileRun("set.delete(1); it.next();");
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(!is_key);
CHECK_EQ(1, entries->Length());
CHECK_EQ(3, entries->Get(context, 0)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
{
// Create set, create iterator, delete entry, iterate until empty, preview.
v8::Local<v8::Object> iterator =
CompileRun("var set = new Set([1,2,3]); var it = set.values(); it")
->ToObject(context)
.ToLocalChecked();
CompileRun("set.delete(1); it.next(); it.next();");
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(!is_key);
CHECK_EQ(0, entries->Length());
}
{
// Create set, create iterator, delete entry, iterate, trigger rehash,
// preview.
v8::Local<v8::Object> iterator =
CompileRun("var set = new Set([1,2,3]); var it = set.values(); it")
->ToObject(context)
.ToLocalChecked();
CompileRun("set.delete(1); it.next();");
CompileRun("for (var i = 4; i < 20; i++) set.add(i);");
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(!is_key);
CHECK_EQ(17, entries->Length());
for (uint32_t i = 0; i < 17; i++) {
CHECK_EQ(i + 3, entries->Get(context, i)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
}
}

TEST(PreviewMapEntriesIteratorEntries) {
LocalContext env;
v8::HandleScope handle_scope(env->GetIsolate());
v8::Local<v8::Context> context = env.local();
{
// Create set, delete entry, create entries iterator, preview.
v8::Local<v8::Object> iterator =
CompileRun("var set = new Set([1,2,3]); set.delete(2); set.entries()")
->ToObject(context)
.ToLocalChecked();
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(is_key);
CHECK_EQ(4, entries->Length());
uint32_t first = entries->Get(context, 0)
.ToLocalChecked()
->Int32Value(context)
.FromJust();
uint32_t second = entries->Get(context, 2)
.ToLocalChecked()
->Int32Value(context)
.FromJust();
CHECK_EQ(1, first);
CHECK_EQ(3, second);
CHECK_EQ(first, entries->Get(context, 1)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(second, entries->Get(context, 3)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
}

TEST(PreviewMapValuesIteratorEntriesWithDeleted) {
LocalContext env;
v8::HandleScope handle_scope(env->GetIsolate());
v8::Local<v8::Context> context = env.local();
Expand Down Expand Up @@ -28991,3 +29126,94 @@ TEST(PreviewMapIteratorEntriesWithDeleted) {
}
}
}

TEST(PreviewMapKeysIteratorEntriesWithDeleted) {
LocalContext env;
v8::HandleScope handle_scope(env->GetIsolate());
v8::Local<v8::Context> context = env.local();

{
// Create map, delete entry, create iterator, preview.
v8::Local<v8::Object> iterator = CompileRun(
"var map = new Map();"
"var key = 1; map.set(key, {});"
"map.set(2, {}); map.set(3, {});"
"map.delete(key);"
"map.keys()")
->ToObject(context)
.ToLocalChecked();
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(!is_key);
CHECK_EQ(2, entries->Length());
CHECK_EQ(2, entries->Get(context, 0)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(3, entries->Get(context, 1)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
{
// Create map, create iterator, delete entry, preview.
v8::Local<v8::Object> iterator = CompileRun(
"var map = new Map();"
"var key = 1; map.set(key, {});"
"map.set(2, {}); map.set(3, {});"
"map.keys()")
->ToObject(context)
.ToLocalChecked();
CompileRun("map.delete(key);");
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(!is_key);
CHECK_EQ(2, entries->Length());
CHECK_EQ(2, entries->Get(context, 0)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
CHECK_EQ(3, entries->Get(context, 1)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
{
// Create map, create iterator, delete entry, iterate, preview.
v8::Local<v8::Object> iterator = CompileRun(
"var map = new Map();"
"var key = 1; map.set(key, {});"
"map.set(2, {}); map.set(3, {});"
"var it = map.keys(); it")
->ToObject(context)
.ToLocalChecked();
CompileRun("map.delete(key); it.next();");
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(!is_key);
CHECK_EQ(1, entries->Length());
CHECK_EQ(3, entries->Get(context, 0)
.ToLocalChecked()
->Int32Value(context)
.FromJust());
}
{
// Create map, create iterator, delete entry, iterate until empty, preview.
v8::Local<v8::Object> iterator = CompileRun(
"var map = new Map();"
"var key = 1; map.set(key, {});"
"map.set(2, {}); map.set(3, {});"
"var it = map.keys(); it")
->ToObject(context)
.ToLocalChecked();
CompileRun("map.delete(key); it.next(); it.next();");
bool is_key;
v8::Local<v8::Array> entries =
iterator->PreviewEntries(&is_key).ToLocalChecked();
CHECK(!is_key);
CHECK_EQ(0, entries->Length());
}
}
40 changes: 26 additions & 14 deletions deps/v8/test/inspector/debugger/object-preview-internal-properties-expected.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -177,27 +177,39 @@ expression: (new Map([[1,2]])).entries()
}
]

expression: (new Set([[1,2]])).entries()
expression: (new Set([1,2])).entries()
[[Entries]]:
[
[0] : {
key : {
description : 1
overflow : false
properties : [
]
type : number
}
value : {
description : Array(2)
description : 1
overflow : false
properties : [
[0] : {
name : 0
type : number
value : 1
}
[1] : {
name : 1
type : number
value : 2
}
]
subtype : array
type : object
type : number
}
}
[1] : {
key : {
description : 2
overflow : false
properties : [
]
type : number
}
value : {
description : 2
overflow : false
properties : [
]
type : number
}
}
]
Expand Down
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