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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/factory.h" | 5 #include "src/factory.h" |
6 | 6 |
7 #include "src/allocation-site-scopes.h" | 7 #include "src/allocation-site-scopes.h" |
8 #include "src/base/bits.h" | 8 #include "src/base/bits.h" |
9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
10 #include "src/conversions.h" | 10 #include "src/conversions.h" |
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1818 #undef TYPED_ARRAY_CASE | 1818 #undef TYPED_ARRAY_CASE |
1819 } | 1819 } |
1820 | 1820 |
1821 | 1821 |
1822 size_t GetExternalArrayElementSize(ExternalArrayType type) { | 1822 size_t GetExternalArrayElementSize(ExternalArrayType type) { |
1823 switch (type) { | 1823 switch (type) { |
1824 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ | 1824 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ |
1825 case kExternal##Type##Array: \ | 1825 case kExternal##Type##Array: \ |
1826 return size; | 1826 return size; |
1827 TYPED_ARRAYS(TYPED_ARRAY_CASE) | 1827 TYPED_ARRAYS(TYPED_ARRAY_CASE) |
1828 default: | |
1829 UNREACHABLE(); | |
1830 return 0; | |
1831 } | 1828 } |
| 1829 UNREACHABLE(); |
| 1830 return 0; |
1832 #undef TYPED_ARRAY_CASE | 1831 #undef TYPED_ARRAY_CASE |
1833 } | 1832 } |
1834 | 1833 |
1835 | |
1836 size_t GetFixedTypedArraysElementSize(ElementsKind kind) { | |
1837 switch (kind) { | |
1838 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ | |
1839 case TYPE##_ELEMENTS: \ | |
1840 return size; | |
1841 TYPED_ARRAYS(TYPED_ARRAY_CASE) | |
1842 default: | |
1843 UNREACHABLE(); | |
1844 return 0; | |
1845 } | |
1846 #undef TYPED_ARRAY_CASE | |
1847 } | |
1848 | |
1849 | |
1850 ExternalArrayType GetArrayTypeFromElementsKind(ElementsKind kind) { | |
1851 switch (kind) { | |
1852 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \ | |
1853 case TYPE##_ELEMENTS: \ | |
1854 return kExternal##Type##Array; | |
1855 TYPED_ARRAYS(TYPED_ARRAY_CASE) | |
1856 default: | |
1857 UNREACHABLE(); | |
1858 return kExternalInt8Array; | |
1859 } | |
1860 #undef TYPED_ARRAY_CASE | |
1861 } | |
1862 | |
1863 | 1834 |
1864 JSFunction* GetTypedArrayFun(ExternalArrayType type, Isolate* isolate) { | 1835 JSFunction* GetTypedArrayFun(ExternalArrayType type, Isolate* isolate) { |
1865 Context* native_context = isolate->context()->native_context(); | 1836 Context* native_context = isolate->context()->native_context(); |
1866 switch (type) { | 1837 switch (type) { |
1867 #define TYPED_ARRAY_FUN(Type, type, TYPE, ctype, size) \ | 1838 #define TYPED_ARRAY_FUN(Type, type, TYPE, ctype, size) \ |
1868 case kExternal##Type##Array: \ | 1839 case kExternal##Type##Array: \ |
1869 return native_context->type##_array_fun(); | 1840 return native_context->type##_array_fun(); |
1870 | 1841 |
1871 TYPED_ARRAYS(TYPED_ARRAY_FUN) | 1842 TYPED_ARRAYS(TYPED_ARRAY_FUN) |
1872 #undef TYPED_ARRAY_FUN | 1843 #undef TYPED_ARRAY_FUN |
1873 | |
1874 default: | |
1875 UNREACHABLE(); | |
1876 return NULL; | |
1877 } | |
1878 } | |
1879 | |
1880 | |
1881 JSFunction* GetTypedArrayFun(ElementsKind elements_kind, Isolate* isolate) { | |
1882 Context* native_context = isolate->context()->native_context(); | |
1883 switch (elements_kind) { | |
1884 #define TYPED_ARRAY_FUN(Type, type, TYPE, ctype, size) \ | |
1885 case TYPE##_ELEMENTS: \ | |
1886 return native_context->type##_array_fun(); | |
1887 | |
1888 TYPED_ARRAYS(TYPED_ARRAY_FUN) | |
1889 #undef TYPED_ARRAY_FUN | |
1890 | 1844 |
1891 default: | 1845 default: |
1892 UNREACHABLE(); | 1846 UNREACHABLE(); |
1893 return NULL; | 1847 return NULL; |
1894 } | 1848 } |
1895 } | 1849 } |
1896 | 1850 |
1897 | 1851 |
1898 void SetupArrayBufferView(i::Isolate* isolate, | 1852 void SetupArrayBufferView(i::Isolate* isolate, |
1899 i::Handle<i::JSArrayBufferView> obj, | 1853 i::Handle<i::JSArrayBufferView> obj, |
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1929 Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type) { | 1883 Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type) { |
1930 Handle<JSFunction> typed_array_fun_handle(GetTypedArrayFun(type, isolate())); | 1884 Handle<JSFunction> typed_array_fun_handle(GetTypedArrayFun(type, isolate())); |
1931 | 1885 |
1932 CALL_HEAP_FUNCTION( | 1886 CALL_HEAP_FUNCTION( |
1933 isolate(), | 1887 isolate(), |
1934 isolate()->heap()->AllocateJSObject(*typed_array_fun_handle), | 1888 isolate()->heap()->AllocateJSObject(*typed_array_fun_handle), |
1935 JSTypedArray); | 1889 JSTypedArray); |
1936 } | 1890 } |
1937 | 1891 |
1938 | 1892 |
1939 Handle<JSTypedArray> Factory::NewJSTypedArray(ElementsKind elements_kind) { | |
1940 Handle<JSFunction> typed_array_fun_handle( | |
1941 GetTypedArrayFun(elements_kind, isolate())); | |
1942 | |
1943 CALL_HEAP_FUNCTION( | |
1944 isolate(), isolate()->heap()->AllocateJSObject(*typed_array_fun_handle), | |
1945 JSTypedArray); | |
1946 } | |
1947 | |
1948 | |
1949 Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type, | 1893 Handle<JSTypedArray> Factory::NewJSTypedArray(ExternalArrayType type, |
1950 Handle<JSArrayBuffer> buffer, | 1894 Handle<JSArrayBuffer> buffer, |
1951 size_t byte_offset, | 1895 size_t byte_offset, |
1952 size_t length) { | 1896 size_t length) { |
1953 Handle<JSTypedArray> obj = NewJSTypedArray(type); | 1897 Handle<JSTypedArray> obj = NewJSTypedArray(type); |
1954 | 1898 |
1955 size_t element_size = GetExternalArrayElementSize(type); | 1899 size_t element_size = GetExternalArrayElementSize(type); |
1956 ElementsKind elements_kind = GetExternalArrayElementsKind(type); | 1900 ElementsKind elements_kind = GetExternalArrayElementsKind(type); |
1957 | 1901 |
1958 CHECK(byte_offset % element_size == 0); | 1902 CHECK(byte_offset % element_size == 0); |
1959 | 1903 |
1960 CHECK(length <= (std::numeric_limits<size_t>::max() / element_size)); | 1904 CHECK(length <= (std::numeric_limits<size_t>::max() / element_size)); |
1961 CHECK(length <= static_cast<size_t>(Smi::kMaxValue)); | 1905 CHECK(length <= static_cast<size_t>(Smi::kMaxValue)); |
1962 size_t byte_length = length * element_size; | 1906 size_t byte_length = length * element_size; |
1963 SetupArrayBufferView(isolate(), obj, buffer, byte_offset, byte_length); | 1907 SetupArrayBufferView(isolate(), obj, buffer, byte_offset, byte_length); |
1964 | 1908 |
1965 Handle<Object> length_object = NewNumberFromSize(length); | 1909 Handle<Object> length_object = NewNumberFromSize(length); |
1966 obj->set_length(*length_object); | 1910 obj->set_length(*length_object); |
1967 | 1911 |
1968 Handle<ExternalArray> elements = NewExternalArray( | 1912 Handle<ExternalArray> elements = NewExternalArray( |
1969 static_cast<int>(length), type, | 1913 static_cast<int>(length), type, |
1970 static_cast<uint8_t*>(buffer->backing_store()) + byte_offset); | 1914 static_cast<uint8_t*>(buffer->backing_store()) + byte_offset); |
1971 Handle<Map> map = JSObject::GetElementsTransitionMap(obj, elements_kind); | 1915 Handle<Map> map = JSObject::GetElementsTransitionMap(obj, elements_kind); |
1972 JSObject::SetMapAndElements(obj, map, elements); | 1916 JSObject::SetMapAndElements(obj, map, elements); |
1973 return obj; | 1917 return obj; |
1974 } | 1918 } |
1975 | 1919 |
1976 | |
1977 Handle<JSTypedArray> Factory::NewJSTypedArray(ElementsKind elements_kind, | |
1978 size_t number_of_elements) { | |
1979 Handle<JSTypedArray> obj = NewJSTypedArray(elements_kind); | |
1980 | |
1981 size_t element_size = GetFixedTypedArraysElementSize(elements_kind); | |
1982 ExternalArrayType array_type = GetArrayTypeFromElementsKind(elements_kind); | |
1983 | |
1984 CHECK(number_of_elements <= | |
1985 (std::numeric_limits<size_t>::max() / element_size)); | |
1986 CHECK(number_of_elements <= static_cast<size_t>(Smi::kMaxValue)); | |
1987 size_t byte_length = number_of_elements * element_size; | |
1988 | |
1989 obj->set_byte_offset(Smi::FromInt(0)); | |
1990 i::Handle<i::Object> byte_length_object = | |
1991 isolate()->factory()->NewNumberFromSize(byte_length); | |
1992 obj->set_byte_length(*byte_length_object); | |
1993 Handle<Object> length_object = NewNumberFromSize(number_of_elements); | |
1994 obj->set_length(*length_object); | |
1995 | |
1996 obj->set_buffer(Smi::FromInt(0)); | |
1997 obj->set_weak_next(isolate()->heap()->undefined_value()); | |
1998 Handle<FixedTypedArrayBase> elements = | |
1999 isolate()->factory()->NewFixedTypedArray( | |
2000 static_cast<int>(number_of_elements), array_type); | |
2001 obj->set_elements(*elements); | |
2002 return obj; | |
2003 } | |
2004 | |
2005 | 1920 |
2006 Handle<JSDataView> Factory::NewJSDataView(Handle<JSArrayBuffer> buffer, | 1921 Handle<JSDataView> Factory::NewJSDataView(Handle<JSArrayBuffer> buffer, |
2007 size_t byte_offset, | 1922 size_t byte_offset, |
2008 size_t byte_length) { | 1923 size_t byte_length) { |
2009 Handle<JSDataView> obj = NewJSDataView(); | 1924 Handle<JSDataView> obj = NewJSDataView(); |
2010 SetupArrayBufferView(isolate(), obj, buffer, byte_offset, byte_length); | 1925 SetupArrayBufferView(isolate(), obj, buffer, byte_offset, byte_length); |
2011 return obj; | 1926 return obj; |
2012 } | 1927 } |
2013 | 1928 |
2014 | 1929 |
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2482 return Handle<Object>::null(); | 2397 return Handle<Object>::null(); |
2483 } | 2398 } |
2484 | 2399 |
2485 | 2400 |
2486 Handle<Object> Factory::ToBoolean(bool value) { | 2401 Handle<Object> Factory::ToBoolean(bool value) { |
2487 return value ? true_value() : false_value(); | 2402 return value ? true_value() : false_value(); |
2488 } | 2403 } |
2489 | 2404 |
2490 | 2405 |
2491 } } // namespace v8::internal | 2406 } } // namespace v8::internal |
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