SkSLString.cpp File Reference

#include "src/base/SkStringView.h"
#include "src/sksl/SkSLDefines.h"
#include "src/sksl/SkSLString.h"
#include <cerrno>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <locale>
#include <memory>
#include <sstream>
#include <string>
#include <string_view>

Go to the source code of this file.

Macros
#define	BUFFER_SIZE   256

Functions
template<typename RoundtripType , int kFullPrecision>
static std::string	to_string_impl (RoundtripType value)

Macro Definition Documentation

BUFFER_SIZE

#define BUFFER_SIZE   256

Function Documentation

to_string_impl()

template<typename RoundtripType , int kFullPrecision>

static std::string to_string_impl ( RoundtripType  value )

static

Definition at line 23 of file SkSLString.cpp.

                                                     {
    std::stringstream buffer;
    buffer.imbue(std::locale::classic());
    buffer.precision(7);
    buffer << value;
    std::string text = buffer.str();
 
    double roundtripped;
    buffer >> roundtripped;
    if (value != (RoundtripType)roundtripped && std::isfinite(value)) {
        buffer.str({});
        buffer.clear();
        buffer.precision(kFullPrecision);
        buffer << value;
        text = buffer.str();
        SkASSERTF((buffer >> roundtripped, value == (RoundtripType)roundtripped),
                  "%.17g -> %s -> %.17g", value, text.c_str(), roundtripped);
    }
 
    // We need to emit a decimal point to distinguish floats from ints.
    if (!skstd::contains(text, '.') && !skstd::contains(text, 'e')) {
        text += ".0";
    }
 
    return text;
}