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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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53 double empty_string_val = 0); | 53 double empty_string_val = 0); |
54 | 54 |
55 // Converts a string into an integer. | 55 // Converts a string into an integer. |
56 double StringToInt(UnicodeCache* unicode_cache, String* str, int radix); | 56 double StringToInt(UnicodeCache* unicode_cache, String* str, int radix); |
57 | 57 |
58 // Converts a number into size_t. | 58 // Converts a number into size_t. |
59 inline size_t NumberToSize(Isolate* isolate, | 59 inline size_t NumberToSize(Isolate* isolate, |
60 Object* number) { | 60 Object* number) { |
61 SealHandleScope shs(isolate); | 61 SealHandleScope shs(isolate); |
62 if (number->IsSmi()) { | 62 if (number->IsSmi()) { |
63 int value = Smi::cast(number)->value(); | 63 return Smi::cast(number)->value(); |
64 CHECK_GE(value, 0); | |
65 ASSERT(Smi::kMaxValue <= std::numeric_limits<size_t>::max()); | |
66 return static_cast<size_t>(value); | |
67 } else { | 64 } else { |
68 ASSERT(number->IsHeapNumber()); | 65 ASSERT(number->IsHeapNumber()); |
69 double value = HeapNumber::cast(number)->value(); | 66 double value = HeapNumber::cast(number)->value(); |
70 CHECK(value >= 0 && | |
71 value <= std::numeric_limits<size_t>::max()); | |
72 return static_cast<size_t>(value); | 67 return static_cast<size_t>(value); |
73 } | 68 } |
74 } | 69 } |
75 | 70 |
76 } } // namespace v8::internal | 71 } } // namespace v8::internal |
77 | 72 |
78 #endif // V8_V8CONVERSIONS_H_ | 73 #endif // V8_V8CONVERSIONS_H_ |
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