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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/v8.h"
#include "src/arguments.h"
#include "src/date.h"
#include "src/dateparser-inl.h"
#include "src/runtime/runtime-utils.h"
namespace v8 {
namespace internal {
RUNTIME_FUNCTION(Runtime_DateMakeDay) {
SealHandleScope shs(isolate);
DCHECK(args.length() == 2);
CONVERT_SMI_ARG_CHECKED(year, 0);
CONVERT_SMI_ARG_CHECKED(month, 1);
int days = isolate->date_cache()->DaysFromYearMonth(year, month);
RUNTIME_ASSERT(Smi::IsValid(days));
return Smi::FromInt(days);
}
RUNTIME_FUNCTION(Runtime_DateSetValue) {
HandleScope scope(isolate);
DCHECK(args.length() == 3);
CONVERT_ARG_HANDLE_CHECKED(JSDate, date, 0);
CONVERT_DOUBLE_ARG_CHECKED(time, 1);
CONVERT_SMI_ARG_CHECKED(is_utc, 2);
DateCache* date_cache = isolate->date_cache();
Handle<Object> value;
;
bool is_value_nan = false;
if (std::isnan(time)) {
value = isolate->factory()->nan_value();
is_value_nan = true;
} else if (!is_utc && (time < -DateCache::kMaxTimeBeforeUTCInMs ||
time > DateCache::kMaxTimeBeforeUTCInMs)) {
value = isolate->factory()->nan_value();
is_value_nan = true;
} else {
time = is_utc ? time : date_cache->ToUTC(static_cast<int64_t>(time));
if (time < -DateCache::kMaxTimeInMs || time > DateCache::kMaxTimeInMs) {
value = isolate->factory()->nan_value();
is_value_nan = true;
} else {
value = isolate->factory()->NewNumber(DoubleToInteger(time));
}
}
date->SetValue(*value, is_value_nan);
return *value;
}
RUNTIME_FUNCTION(Runtime_ThrowNotDateError) {
HandleScope scope(isolate);
DCHECK(args.length() == 0);
THROW_NEW_ERROR_RETURN_FAILURE(
isolate, NewTypeError("not_date_object", HandleVector<Object>(NULL, 0)));
}
RUNTIME_FUNCTION(Runtime_DateCurrentTime) {
HandleScope scope(isolate);
DCHECK(args.length() == 0);
if (FLAG_log_timer_events || FLAG_prof_cpp) LOG(isolate, CurrentTimeEvent());
// According to ECMA-262, section 15.9.1, page 117, the precision of
// the number in a Date object representing a particular instant in
// time is milliseconds. Therefore, we floor the result of getting
// the OS time.
double millis;
if (FLAG_verify_predictable) {
millis = 1388534400000.0; // Jan 1 2014 00:00:00 GMT+0000
millis += Floor(isolate->heap()->synthetic_time());
} else {
millis = Floor(base::OS::TimeCurrentMillis());
}
return *isolate->factory()->NewNumber(millis);
}
RUNTIME_FUNCTION(Runtime_DateParseString) {
HandleScope scope(isolate);
DCHECK(args.length() == 2);
CONVERT_ARG_HANDLE_CHECKED(String, str, 0);
CONVERT_ARG_HANDLE_CHECKED(JSArray, output, 1);
RUNTIME_ASSERT(output->HasFastElements());
JSObject::EnsureCanContainHeapObjectElements(output);
RUNTIME_ASSERT(output->HasFastObjectElements());
Handle<FixedArray> output_array(FixedArray::cast(output->elements()));
RUNTIME_ASSERT(output_array->length() >= DateParser::OUTPUT_SIZE);
str = String::Flatten(str);
DisallowHeapAllocation no_gc;
bool result;
String::FlatContent str_content = str->GetFlatContent();
if (str_content.IsOneByte()) {
result = DateParser::Parse(str_content.ToOneByteVector(), *output_array,
isolate->unicode_cache());
} else {
DCHECK(str_content.IsTwoByte());
result = DateParser::Parse(str_content.ToUC16Vector(), *output_array,
isolate->unicode_cache());
}
if (result) {
return *output;
} else {
return isolate->heap()->null_value();
}
}
RUNTIME_FUNCTION(Runtime_DateLocalTimezone) {
HandleScope scope(isolate);
DCHECK(args.length() == 1);
CONVERT_DOUBLE_ARG_CHECKED(x, 0);
RUNTIME_ASSERT(x >= -DateCache::kMaxTimeBeforeUTCInMs &&
x <= DateCache::kMaxTimeBeforeUTCInMs);
const char* zone =
isolate->date_cache()->LocalTimezone(static_cast<int64_t>(x));
Handle<String> result =
isolate->factory()->NewStringFromUtf8(CStrVector(zone)).ToHandleChecked();
return *result;
}
RUNTIME_FUNCTION(Runtime_DateToUTC) {
HandleScope scope(isolate);
DCHECK(args.length() == 1);
CONVERT_DOUBLE_ARG_CHECKED(x, 0);
RUNTIME_ASSERT(x >= -DateCache::kMaxTimeBeforeUTCInMs &&
x <= DateCache::kMaxTimeBeforeUTCInMs);
int64_t time = isolate->date_cache()->ToUTC(static_cast<int64_t>(x));
return *isolate->factory()->NewNumber(static_cast<double>(time));
}
RUNTIME_FUNCTION(Runtime_DateCacheVersion) {
HandleScope hs(isolate);
DCHECK(args.length() == 0);
if (isolate->serializer_enabled()) return isolate->heap()->undefined_value();
if (!isolate->eternal_handles()->Exists(EternalHandles::DATE_CACHE_VERSION)) {
Handle<FixedArray> date_cache_version =
isolate->factory()->NewFixedArray(1, TENURED);
date_cache_version->set(0, Smi::FromInt(0));
isolate->eternal_handles()->CreateSingleton(
isolate, *date_cache_version, EternalHandles::DATE_CACHE_VERSION);
}
Handle<FixedArray> date_cache_version =
Handle<FixedArray>::cast(isolate->eternal_handles()->GetSingleton(
EternalHandles::DATE_CACHE_VERSION));
// Return result as a JS array.
Handle<JSObject> result =
isolate->factory()->NewJSObject(isolate->array_function());
JSArray::SetContent(Handle<JSArray>::cast(result), date_cache_version);
return *result;
}
RUNTIME_FUNCTION(Runtime_DateField) {
SealHandleScope shs(isolate);
DCHECK(args.length() == 2);
CONVERT_ARG_CHECKED(Object, obj, 0);
CONVERT_SMI_ARG_CHECKED(index, 1);
if (!obj->IsJSDate()) {
HandleScope scope(isolate);
THROW_NEW_ERROR_RETURN_FAILURE(
isolate,
NewTypeError("not_date_object", HandleVector<Object>(NULL, 0)));
}
JSDate* date = JSDate::cast(obj);
if (index == 0) return date->value();
return JSDate::GetField(date, Smi::FromInt(index));
}
}
} // namespace v8::internal
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