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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 #ifndef V8_CONVERSIONS_H_ | 28 #ifndef V8_CONVERSIONS_H_ |
29 #define V8_CONVERSIONS_H_ | 29 #define V8_CONVERSIONS_H_ |
30 | 30 |
31 #include <limits> | 31 #include <limits> |
32 | 32 |
33 #include "scanner-base.h" | 33 #include "utils.h" |
34 | 34 |
35 namespace v8 { | 35 namespace v8 { |
36 namespace internal { | 36 namespace internal { |
37 | 37 |
| 38 class UnicodeCache; |
| 39 |
38 // Maximum number of significant digits in decimal representation. | 40 // Maximum number of significant digits in decimal representation. |
39 // The longest possible double in decimal representation is | 41 // The longest possible double in decimal representation is |
40 // (2^53 - 1) * 2 ^ -1074 that is (2 ^ 53 - 1) * 5 ^ 1074 / 10 ^ 1074 | 42 // (2^53 - 1) * 2 ^ -1074 that is (2 ^ 53 - 1) * 5 ^ 1074 / 10 ^ 1074 |
41 // (768 digits). If we parse a number whose first digits are equal to a | 43 // (768 digits). If we parse a number whose first digits are equal to a |
42 // mean of 2 adjacent doubles (that could have up to 769 digits) the result | 44 // mean of 2 adjacent doubles (that could have up to 769 digits) the result |
43 // must be rounded to the bigger one unless the tail consists of zeros, so | 45 // must be rounded to the bigger one unless the tail consists of zeros, so |
44 // we don't need to preserve all the digits. | 46 // we don't need to preserve all the digits. |
45 const int kMaxSignificantDigits = 772; | 47 const int kMaxSignificantDigits = 772; |
46 | 48 |
47 | 49 |
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139 // Additional number to string conversions for the number type. | 141 // Additional number to string conversions for the number type. |
140 // The caller is responsible for calling free on the returned pointer. | 142 // The caller is responsible for calling free on the returned pointer. |
141 char* DoubleToFixedCString(double value, int f); | 143 char* DoubleToFixedCString(double value, int f); |
142 char* DoubleToExponentialCString(double value, int f); | 144 char* DoubleToExponentialCString(double value, int f); |
143 char* DoubleToPrecisionCString(double value, int f); | 145 char* DoubleToPrecisionCString(double value, int f); |
144 char* DoubleToRadixCString(double value, int radix); | 146 char* DoubleToRadixCString(double value, int radix); |
145 | 147 |
146 } } // namespace v8::internal | 148 } } // namespace v8::internal |
147 | 149 |
148 #endif // V8_CONVERSIONS_H_ | 150 #endif // V8_CONVERSIONS_H_ |
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