1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mfbt/decimal/moz-decimal-utils.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,113 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef MOZ_DECIMAL_UTILS_H
1.10 +#define MOZ_DECIMAL_UTILS_H
1.11 +
1.12 +// This file contains extra includes, defines and typedefs to allow compilation
1.13 +// of Decimal.cpp under the Mozilla source without blink core dependencies. Do
1.14 +// not include it into any file other than Decimal.cpp.
1.15 +
1.16 +#include "../double-conversion/double-conversion.h"
1.17 +#include "mozilla/ArrayUtils.h"
1.18 +#include "mozilla/Casting.h"
1.19 +#include "mozilla/FloatingPoint.h"
1.20 +#include "mozilla/NullPtr.h"
1.21 +
1.22 +#include <cmath>
1.23 +#include <cstring>
1.24 +#include <iomanip>
1.25 +#include <limits>
1.26 +#include <sstream>
1.27 +
1.28 +#ifndef UINT64_C
1.29 +// For Android toolchain
1.30 +#define UINT64_C(c) (c ## ULL)
1.31 +#endif
1.32 +
1.33 +#ifdef ASSERT
1.34 +#undef ASSERT
1.35 +#endif
1.36 +#define ASSERT MOZ_ASSERT
1.37 +
1.38 +#define ASSERT_NOT_REACHED() MOZ_ASSUME_UNREACHABLE("moz-decimal-utils.h")
1.39 +
1.40 +#define WTF_MAKE_NONCOPYABLE(ClassName) \
1.41 + private: \
1.42 + ClassName(const ClassName&) MOZ_DELETE; \
1.43 + void operator=(const ClassName&) MOZ_DELETE;
1.44 +
1.45 +#if defined(_MSC_VER)
1.46 +namespace std {
1.47 + inline bool isinf(double num) { return mozilla::IsInfinite(num); }
1.48 + inline bool isnan(double num) { return mozilla::IsNaN(num); }
1.49 + inline bool isfinite(double num) { return mozilla::IsFinite(num); }
1.50 +}
1.51 +#endif
1.52 +
1.53 +typedef std::string String;
1.54 +
1.55 +double mozToDouble(const String &aStr, bool *valid) {
1.56 + double_conversion::StringToDoubleConverter converter(
1.57 + double_conversion::StringToDoubleConverter::NO_FLAGS,
1.58 + mozilla::UnspecifiedNaN<double>(), mozilla::UnspecifiedNaN<double>(), nullptr, nullptr);
1.59 + const char* str = aStr.c_str();
1.60 + int length = mozilla::SafeCast<int>(strlen(str));
1.61 + int processed_char_count; // unused - NO_FLAGS requires the whole string to parse
1.62 + double result = converter.StringToDouble(str, length, &processed_char_count);
1.63 + *valid = mozilla::IsFinite(result);
1.64 + return result;
1.65 +}
1.66 +
1.67 +String mozToString(double aNum) {
1.68 + char buffer[64];
1.69 + int buffer_length = mozilla::ArrayLength(buffer);
1.70 + const double_conversion::DoubleToStringConverter& converter =
1.71 + double_conversion::DoubleToStringConverter::EcmaScriptConverter();
1.72 + double_conversion::StringBuilder builder(buffer, buffer_length);
1.73 + converter.ToShortest(aNum, &builder);
1.74 + return String(builder.Finalize());
1.75 +}
1.76 +
1.77 +String mozToString(int64_t aNum) {
1.78 + std::ostringstream o;
1.79 + o << std::setprecision(std::numeric_limits<int64_t>::digits10) << aNum;
1.80 + return o.str();
1.81 +}
1.82 +
1.83 +String mozToString(uint64_t aNum) {
1.84 + std::ostringstream o;
1.85 + o << std::setprecision(std::numeric_limits<uint64_t>::digits10) << aNum;
1.86 + return o.str();
1.87 +}
1.88 +
1.89 +namespace moz_decimal_utils {
1.90 +
1.91 +class StringBuilder
1.92 +{
1.93 +public:
1.94 + void append(char c) {
1.95 + mStr += c;
1.96 + }
1.97 + void appendLiteral(const char *aStr) {
1.98 + mStr += aStr;
1.99 + }
1.100 + void appendNumber(int aNum) {
1.101 + mStr += mozToString(int64_t(aNum));
1.102 + }
1.103 + void append(const String& aStr) {
1.104 + mStr += aStr;
1.105 + }
1.106 + std::string toString() const {
1.107 + return mStr;
1.108 + }
1.109 +private:
1.110 + std::string mStr;
1.111 +};
1.112 +
1.113 +} // namespace moz-decimal-utils
1.114 +
1.115 +#endif
1.116 +
