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comparison: mfbt/decimal/moz-decimal-utils.h
mfbt/decimal/moz-decimal-utils.h
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
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| -1:000000000000 | 0:513dcf780887 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef MOZ_DECIMAL_UTILS_H | |
| 7 #define MOZ_DECIMAL_UTILS_H | |
| 8 | |
| 9 // This file contains extra includes, defines and typedefs to allow compilation | |
| 10 // of Decimal.cpp under the Mozilla source without blink core dependencies. Do | |
| 11 // not include it into any file other than Decimal.cpp. | |
| 12 | |
| 13 #include "../double-conversion/double-conversion.h" | |
| 14 #include "mozilla/ArrayUtils.h" | |
| 15 #include "mozilla/Casting.h" | |
| 16 #include "mozilla/FloatingPoint.h" | |
| 17 #include "mozilla/NullPtr.h" | |
| 18 | |
| 19 #include <cmath> | |
| 20 #include <cstring> | |
| 21 #include <iomanip> | |
| 22 #include <limits> | |
| 23 #include <sstream> | |
| 24 | |
| 25 #ifndef UINT64_C | |
| 26 // For Android toolchain | |
| 27 #define UINT64_C(c) (c ## ULL) | |
| 28 #endif | |
| 29 | |
| 30 #ifdef ASSERT | |
| 31 #undef ASSERT | |
| 32 #endif | |
| 33 #define ASSERT MOZ_ASSERT | |
| 34 | |
| 35 #define ASSERT_NOT_REACHED() MOZ_ASSUME_UNREACHABLE("moz-decimal-utils.h") | |
| 36 | |
| 37 #define WTF_MAKE_NONCOPYABLE(ClassName) \ | |
| 38 private: \ | |
| 39 ClassName(const ClassName&) MOZ_DELETE; \ | |
| 40 void operator=(const ClassName&) MOZ_DELETE; | |
| 41 | |
| 42 #if defined(_MSC_VER) | |
| 43 namespace std { | |
| 44 inline bool isinf(double num) { return mozilla::IsInfinite(num); } | |
| 45 inline bool isnan(double num) { return mozilla::IsNaN(num); } | |
| 46 inline bool isfinite(double num) { return mozilla::IsFinite(num); } | |
| 47 } | |
| 48 #endif | |
| 49 | |
| 50 typedef std::string String; | |
| 51 | |
| 52 double mozToDouble(const String &aStr, bool *valid) { | |
| 53 double_conversion::StringToDoubleConverter converter( | |
| 54 double_conversion::StringToDoubleConverter::NO_FLAGS, | |
| 55 mozilla::UnspecifiedNaN<double>(), mozilla::UnspecifiedNaN<double>(), nullptr, nullptr); | |
| 56 const char* str = aStr.c_str(); | |
| 57 int length = mozilla::SafeCast<int>(strlen(str)); | |
| 58 int processed_char_count; // unused - NO_FLAGS requires the whole string to parse | |
| 59 double result = converter.StringToDouble(str, length, &processed_char_count); | |
| 60 *valid = mozilla::IsFinite(result); | |
| 61 return result; | |
| 62 } | |
| 63 | |
| 64 String mozToString(double aNum) { | |
| 65 char buffer[64]; | |
| 66 int buffer_length = mozilla::ArrayLength(buffer); | |
| 67 const double_conversion::DoubleToStringConverter& converter = | |
| 68 double_conversion::DoubleToStringConverter::EcmaScriptConverter(); | |
| 69 double_conversion::StringBuilder builder(buffer, buffer_length); | |
| 70 converter.ToShortest(aNum, &builder); | |
| 71 return String(builder.Finalize()); | |
| 72 } | |
| 73 | |
| 74 String mozToString(int64_t aNum) { | |
| 75 std::ostringstream o; | |
| 76 o << std::setprecision(std::numeric_limits<int64_t>::digits10) << aNum; | |
| 77 return o.str(); | |
| 78 } | |
| 79 | |
| 80 String mozToString(uint64_t aNum) { | |
| 81 std::ostringstream o; | |
| 82 o << std::setprecision(std::numeric_limits<uint64_t>::digits10) << aNum; | |
| 83 return o.str(); | |
| 84 } | |
| 85 | |
| 86 namespace moz_decimal_utils { | |
| 87 | |
| 88 class StringBuilder | |
| 89 { | |
| 90 public: | |
| 91 void append(char c) { | |
| 92 mStr += c; | |
| 93 } | |
| 94 void appendLiteral(const char *aStr) { | |
| 95 mStr += aStr; | |
| 96 } | |
| 97 void appendNumber(int aNum) { | |
| 98 mStr += mozToString(int64_t(aNum)); | |
| 99 } | |
| 100 void append(const String& aStr) { | |
| 101 mStr += aStr; | |
| 102 } | |
| 103 std::string toString() const { | |
| 104 return mStr; | |
| 105 } | |
| 106 private: | |
| 107 std::string mStr; | |
| 108 }; | |
| 109 | |
| 110 } // namespace moz-decimal-utils | |
| 111 | |
| 112 #endif | |
| 113 |
