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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/bootstrap_natives.h" | 5 #include "vm/bootstrap_natives.h" |
6 | 6 |
7 #include "include/dart_api.h" | 7 #include "include/dart_api.h" |
8 #include "vm/exceptions.h" | 8 #include "vm/exceptions.h" |
9 #include "vm/dart_api_impl.h" | 9 #include "vm/dart_api_impl.h" |
10 #include "vm/isolate.h" | 10 #include "vm/isolate.h" |
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66 int32_t* utf32_array = zone->Alloc<int32_t>(array_len); | 66 int32_t* utf32_array = zone->Alloc<int32_t>(array_len); |
67 Instance& index_object = Instance::Handle(isolate); | 67 Instance& index_object = Instance::Handle(isolate); |
68 for (intptr_t i = 0; i < array_len; i++) { | 68 for (intptr_t i = 0; i < array_len; i++) { |
69 index_object ^= a.At(i); | 69 index_object ^= a.At(i); |
70 if (!index_object.IsSmi()) { | 70 if (!index_object.IsSmi()) { |
71 Exceptions::ThrowArgumentError(index_object); | 71 Exceptions::ThrowArgumentError(index_object); |
72 } | 72 } |
73 intptr_t value = Smi::Cast(index_object).Value(); | 73 intptr_t value = Smi::Cast(index_object).Value(); |
74 if (Utf::IsOutOfRange(value)) { | 74 if (Utf::IsOutOfRange(value)) { |
75 Exceptions::ThrowByType(Exceptions::kArgument, Object::empty_array()); | 75 Exceptions::ThrowByType(Exceptions::kArgument, Object::empty_array()); |
76 } else { | 76 UNREACHABLE(); |
77 if (!Utf::IsLatin1(value)) { | 77 } |
78 is_one_byte_string = false; | 78 // Now it is safe to cast the value. |
79 if (Utf::IsSupplementary(value)) { | 79 int32_t value32 = static_cast<int32_t>(value); |
80 utf16_len += 1; | 80 if (!Utf::IsLatin1(value32)) { |
81 } | 81 is_one_byte_string = false; |
| 82 if (Utf::IsSupplementary(value32)) { |
| 83 utf16_len += 1; |
82 } | 84 } |
83 } | 85 } |
84 utf32_array[i] = value; | 86 utf32_array[i] = value32; |
85 } | 87 } |
86 if (is_one_byte_string) { | 88 if (is_one_byte_string) { |
87 return OneByteString::New(utf32_array, array_len, Heap::kNew); | 89 return OneByteString::New(utf32_array, array_len, Heap::kNew); |
88 } | 90 } |
89 return TwoByteString::New(utf16_len, utf32_array, array_len, Heap::kNew); | 91 return TwoByteString::New(utf16_len, utf32_array, array_len, Heap::kNew); |
90 } | 92 } |
91 | 93 |
92 | 94 |
93 DEFINE_NATIVE_ENTRY(StringBase_substringUnchecked, 3) { | 95 DEFINE_NATIVE_ENTRY(StringBase_substringUnchecked, 3) { |
94 const String& receiver = String::CheckedHandle(arguments->NativeArgAt(0)); | 96 const String& receiver = String::CheckedHandle(arguments->NativeArgAt(0)); |
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230 | 232 |
231 DEFINE_NATIVE_ENTRY(String_getLength, 1) { | 233 DEFINE_NATIVE_ENTRY(String_getLength, 1) { |
232 const String& receiver = String::CheckedHandle(arguments->NativeArgAt(0)); | 234 const String& receiver = String::CheckedHandle(arguments->NativeArgAt(0)); |
233 return Smi::New(receiver.Length()); | 235 return Smi::New(receiver.Length()); |
234 } | 236 } |
235 | 237 |
236 | 238 |
237 static int32_t StringValueAt(const String& str, const Integer& index) { | 239 static int32_t StringValueAt(const String& str, const Integer& index) { |
238 if (index.IsSmi()) { | 240 if (index.IsSmi()) { |
239 const Smi& smi = Smi::Cast(index); | 241 const Smi& smi = Smi::Cast(index); |
240 int32_t index = smi.Value(); | 242 intptr_t index = smi.Value(); |
241 if ((index < 0) || (index >= str.Length())) { | 243 if ((index < 0) || (index >= str.Length())) { |
242 const Array& args = Array::Handle(Array::New(1)); | 244 const Array& args = Array::Handle(Array::New(1)); |
243 args.SetAt(0, smi); | 245 args.SetAt(0, smi); |
244 Exceptions::ThrowByType(Exceptions::kRange, args); | 246 Exceptions::ThrowByType(Exceptions::kRange, args); |
245 } | 247 } |
246 return str.CharAt(index); | 248 return str.CharAt(index); |
247 } else { | 249 } else { |
248 // An index larger than Smi is always illegal. | 250 // An index larger than Smi is always illegal. |
249 const Array& args = Array::Handle(Array::New(1)); | 251 const Array& args = Array::Handle(Array::New(1)); |
250 args.SetAt(0, index); | 252 args.SetAt(0, index); |
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346 ? String::Handle(OneByteString::New(length_value, Heap::kNew)) | 348 ? String::Handle(OneByteString::New(length_value, Heap::kNew)) |
347 : String::Handle(TwoByteString::New(length_value, Heap::kNew)); | 349 : String::Handle(TwoByteString::New(length_value, Heap::kNew)); |
348 NoGCScope no_gc; | 350 NoGCScope no_gc; |
349 | 351 |
350 uint16_t* data_position = reinterpret_cast<uint16_t*>(codeUnits.DataAddr(0)); | 352 uint16_t* data_position = reinterpret_cast<uint16_t*>(codeUnits.DataAddr(0)); |
351 String::Copy(result, 0, data_position, length_value); | 353 String::Copy(result, 0, data_position, length_value); |
352 return result.raw(); | 354 return result.raw(); |
353 } | 355 } |
354 | 356 |
355 } // namespace dart | 357 } // namespace dart |
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