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Issue 9169057: Include what you use for the preparser. Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years, 11 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2012 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
11 // with the distribution. 11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its 12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived 13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission. 14 // from this software without specific prior written permission.
15 // 15 //
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 "utils.h" 31 #include "globals.h"
32 32
33 namespace v8 { 33 namespace v8 {
34 namespace internal { 34 namespace internal {
35 35
36 class UnicodeCache; 36 class UnicodeCache;
37 template <typename T> class Vector;
37 38
38 // Maximum number of significant digits in decimal representation. 39 // Maximum number of significant digits in decimal representation.
39 // The longest possible double in decimal representation is 40 // The longest possible double in decimal representation is
40 // (2^53 - 1) * 2 ^ -1074 that is (2 ^ 53 - 1) * 5 ^ 1074 / 10 ^ 1074 41 // (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 42 // (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 43 // 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 44 // must be rounded to the bigger one unless the tail consists of zeros, so
44 // we don't need to preserve all the digits. 45 // we don't need to preserve all the digits.
45 const int kMaxSignificantDigits = 772; 46 const int kMaxSignificantDigits = 772;
46 47
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88 89
89 // This function should match the exact semantics of ECMA-262 9.4. 90 // This function should match the exact semantics of ECMA-262 9.4.
90 inline double DoubleToInteger(double x); 91 inline double DoubleToInteger(double x);
91 92
92 93
93 // This function should match the exact semantics of ECMA-262 9.5. 94 // This function should match the exact semantics of ECMA-262 9.5.
94 inline int32_t DoubleToInt32(double x); 95 inline int32_t DoubleToInt32(double x);
95 96
96 97
97 // This function should match the exact semantics of ECMA-262 9.6. 98 // This function should match the exact semantics of ECMA-262 9.6.
98 inline uint32_t DoubleToUint32(double x) { 99 inline uint32_t DoubleToUint32(double x);
99 return static_cast<uint32_t>(DoubleToInt32(x));
100 }
101 100
102 101
103 // Enumeration for allowing octals and ignoring junk when converting 102 // Enumeration for allowing octals and ignoring junk when converting
104 // strings to numbers. 103 // strings to numbers.
105 enum ConversionFlags { 104 enum ConversionFlags {
106 NO_FLAGS = 0, 105 NO_FLAGS = 0,
107 ALLOW_HEX = 1, 106 ALLOW_HEX = 1,
108 ALLOW_OCTALS = 2, 107 ALLOW_OCTALS = 2,
109 ALLOW_TRAILING_JUNK = 4 108 ALLOW_TRAILING_JUNK = 4
110 }; 109 };
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139 // Additional number to string conversions for the number type. 138 // Additional number to string conversions for the number type.
140 // The caller is responsible for calling free on the returned pointer. 139 // The caller is responsible for calling free on the returned pointer.
141 char* DoubleToFixedCString(double value, int f); 140 char* DoubleToFixedCString(double value, int f);
142 char* DoubleToExponentialCString(double value, int f); 141 char* DoubleToExponentialCString(double value, int f);
143 char* DoubleToPrecisionCString(double value, int f); 142 char* DoubleToPrecisionCString(double value, int f);
144 char* DoubleToRadixCString(double value, int radix); 143 char* DoubleToRadixCString(double value, int radix);
145 144
146 } } // namespace v8::internal 145 } } // namespace v8::internal
147 146
148 #endif // V8_CONVERSIONS_H_ 147 #endif // V8_CONVERSIONS_H_
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