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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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23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #include <stdarg.h> | 28 #include <stdarg.h> |
29 #include <limits.h> | 29 #include <limits.h> |
30 | 30 |
31 #include "v8.h" | 31 #include "v8.h" |
32 | 32 |
| 33 #include "assert-scope.h" |
33 #include "conversions-inl.h" | 34 #include "conversions-inl.h" |
34 #include "v8conversions.h" | 35 #include "v8conversions.h" |
35 #include "dtoa.h" | 36 #include "dtoa.h" |
36 #include "factory.h" | 37 #include "factory.h" |
37 #include "strtod.h" | 38 #include "strtod.h" |
38 | 39 |
39 namespace v8 { | 40 namespace v8 { |
40 namespace internal { | 41 namespace internal { |
41 | 42 |
42 namespace { | 43 namespace { |
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74 void StringCharacterStreamIterator::operator++() { | 75 void StringCharacterStreamIterator::operator++() { |
75 end_ = !stream_->HasMore(); | 76 end_ = !stream_->HasMore(); |
76 if (!end_) { | 77 if (!end_) { |
77 current_ = stream_->GetNext(); | 78 current_ = stream_->GetNext(); |
78 } | 79 } |
79 } | 80 } |
80 } // End anonymous namespace. | 81 } // End anonymous namespace. |
81 | 82 |
82 | 83 |
83 double StringToDouble(UnicodeCache* unicode_cache, | 84 double StringToDouble(UnicodeCache* unicode_cache, |
84 String* str, int flags, double empty_string_val) { | 85 String* string, |
85 StringShape shape(str); | 86 int flags, |
86 // TODO(dcarney): Use a Visitor here. | 87 double empty_string_val) { |
87 if (shape.IsSequentialAscii()) { | 88 DisallowHeapAllocation no_gc; |
88 const uint8_t* begin = SeqOneByteString::cast(str)->GetChars(); | 89 String::FlatContent flat = string->GetFlatContent(); |
89 const uint8_t* end = begin + str->length(); | 90 // ECMA-262 section 15.1.2.3, empty string is NaN |
90 return InternalStringToDouble(unicode_cache, begin, end, flags, | 91 if (flat.IsAscii()) { |
91 empty_string_val); | 92 return StringToDouble( |
92 } else if (shape.IsSequentialTwoByte()) { | 93 unicode_cache, flat.ToOneByteVector(), flags, empty_string_val); |
93 const uc16* begin = SeqTwoByteString::cast(str)->GetChars(); | |
94 const uc16* end = begin + str->length(); | |
95 return InternalStringToDouble(unicode_cache, begin, end, flags, | |
96 empty_string_val); | |
97 } else { | 94 } else { |
98 ConsStringIteratorOp op; | 95 return StringToDouble( |
99 StringCharacterStream stream(str, &op); | 96 unicode_cache, flat.ToUC16Vector(), flags, empty_string_val); |
100 return InternalStringToDouble(unicode_cache, | |
101 StringCharacterStreamIterator(&stream), | |
102 StringCharacterStreamIterator::EndMarker(), | |
103 flags, | |
104 empty_string_val); | |
105 } | 97 } |
106 } | 98 } |
107 | 99 |
108 | |
109 double StringToInt(UnicodeCache* unicode_cache, | |
110 String* str, | |
111 int radix) { | |
112 StringShape shape(str); | |
113 // TODO(dcarney): Use a Visitor here. | |
114 if (shape.IsSequentialAscii()) { | |
115 const uint8_t* begin = SeqOneByteString::cast(str)->GetChars(); | |
116 const uint8_t* end = begin + str->length(); | |
117 return InternalStringToInt(unicode_cache, begin, end, radix); | |
118 } else if (shape.IsSequentialTwoByte()) { | |
119 const uc16* begin = SeqTwoByteString::cast(str)->GetChars(); | |
120 const uc16* end = begin + str->length(); | |
121 return InternalStringToInt(unicode_cache, begin, end, radix); | |
122 } else { | |
123 ConsStringIteratorOp op; | |
124 StringCharacterStream stream(str, &op); | |
125 return InternalStringToInt(unicode_cache, | |
126 StringCharacterStreamIterator(&stream), | |
127 StringCharacterStreamIterator::EndMarker(), | |
128 radix); | |
129 } | |
130 } | |
131 | |
132 } } // namespace v8::internal | 100 } } // namespace v8::internal |
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