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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 "platform/assert.h" | 5 #include "platform/assert.h" |
6 #include "vm/bootstrap_natives.h" | 6 #include "vm/bootstrap_natives.h" |
7 #include "vm/assembler.h" | 7 #include "vm/assembler.h" |
8 #include "vm/exceptions.h" | 8 #include "vm/exceptions.h" |
9 #include "vm/native_entry.h" | 9 #include "vm/native_entry.h" |
10 #include "vm/object.h" | 10 #include "vm/object.h" |
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47 | 47 |
48 | 48 |
49 // ObjectArray src, int start, int count, bool needTypeArgument. | 49 // ObjectArray src, int start, int count, bool needTypeArgument. |
50 DEFINE_NATIVE_ENTRY(List_slice, 4) { | 50 DEFINE_NATIVE_ENTRY(List_slice, 4) { |
51 const Array& src = Array::CheckedHandle(arguments->NativeArgAt(0)); | 51 const Array& src = Array::CheckedHandle(arguments->NativeArgAt(0)); |
52 GET_NON_NULL_NATIVE_ARGUMENT(Smi, start, arguments->NativeArgAt(1)); | 52 GET_NON_NULL_NATIVE_ARGUMENT(Smi, start, arguments->NativeArgAt(1)); |
53 GET_NON_NULL_NATIVE_ARGUMENT(Smi, count, arguments->NativeArgAt(2)); | 53 GET_NON_NULL_NATIVE_ARGUMENT(Smi, count, arguments->NativeArgAt(2)); |
54 GET_NON_NULL_NATIVE_ARGUMENT(Bool, needs_type_arg, arguments->NativeArgAt(3)); | 54 GET_NON_NULL_NATIVE_ARGUMENT(Bool, needs_type_arg, arguments->NativeArgAt(3)); |
55 intptr_t istart = start.Value(); | 55 intptr_t istart = start.Value(); |
56 if ((istart < 0) || (istart > src.Length())) { | 56 if ((istart < 0) || (istart > src.Length())) { |
57 Exceptions::ThrowRangeError( | 57 Exceptions::ThrowRangeError("start", start, 0, src.Length()); |
58 "start", | |
59 start, | |
60 0, | |
61 src.Length()); | |
62 } | 58 } |
63 intptr_t icount = count.Value(); | 59 intptr_t icount = count.Value(); |
64 // Zero count should be handled outside already. | 60 // Zero count should be handled outside already. |
65 if ((icount <= 0) || (icount > src.Length())) { | 61 if ((icount <= 0) || (icount > src.Length())) { |
66 Exceptions::ThrowRangeError( | 62 Exceptions::ThrowRangeError("count", count, |
67 "count", | 63 0, // This is the limit the user sees. |
68 count, | 64 src.Length() - istart); |
69 0, // This is the limit the user sees. | |
70 src.Length() - istart); | |
71 } | 65 } |
72 | 66 |
73 return src.Slice(istart, icount, needs_type_arg.value()); | 67 return src.Slice(istart, icount, needs_type_arg.value()); |
74 } | 68 } |
75 | 69 |
76 | 70 |
77 // Private factory, expects correct arguments. | 71 // Private factory, expects correct arguments. |
78 DEFINE_NATIVE_ENTRY(ImmutableList_from, 4) { | 72 DEFINE_NATIVE_ENTRY(ImmutableList_from, 4) { |
79 // Ignore first argument of a thsi factory (type argument). | 73 // Ignore first argument of a thsi factory (type argument). |
80 const Array& from_array = Array::CheckedHandle(arguments->NativeArgAt(1)); | 74 const Array& from_array = Array::CheckedHandle(arguments->NativeArgAt(1)); |
81 const Smi& smi_offset = Smi::CheckedHandle(arguments->NativeArgAt(2)); | 75 const Smi& smi_offset = Smi::CheckedHandle(arguments->NativeArgAt(2)); |
82 const Smi& smi_length = Smi::CheckedHandle(arguments->NativeArgAt(3)); | 76 const Smi& smi_length = Smi::CheckedHandle(arguments->NativeArgAt(3)); |
83 const intptr_t length = smi_length.Value(); | 77 const intptr_t length = smi_length.Value(); |
84 const intptr_t offset = smi_offset.Value(); | 78 const intptr_t offset = smi_offset.Value(); |
85 const Array& result = Array::Handle(Array::New(length)); | 79 const Array& result = Array::Handle(Array::New(length)); |
86 Object& temp = Object::Handle(); | 80 Object& temp = Object::Handle(); |
87 for (intptr_t i = 0; i < length; i++) { | 81 for (intptr_t i = 0; i < length; i++) { |
88 temp = from_array.At(i + offset); | 82 temp = from_array.At(i + offset); |
89 result.SetAt(i, temp); | 83 result.SetAt(i, temp); |
90 } | 84 } |
91 result.MakeImmutable(); | 85 result.MakeImmutable(); |
92 return result.raw(); | 86 return result.raw(); |
93 } | 87 } |
94 | 88 |
95 } // namespace dart | 89 } // namespace dart |
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