60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
This fixes a warning triggered by testing an unsigned parameter
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against 0. The patch solves this by creating a different template
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for signed case. (PR: 178827)
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--- misc.h.orig 2022-08-07 19:52:03 UTC
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+++ misc.h
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@@ -720,8 +720,10 @@ inline bool SafeConvert(T1 from, T2 &to)
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/// \param value the value to convert
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/// \param base the base to use during the conversion
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/// \return the string representation of value in base.
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+template<bool> struct IsUnsigned {};
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+
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template <class T>
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-std::string IntToString(T value, unsigned int base = 10)
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+std::string IntToStringImpl(T value, unsigned int base, IsUnsigned<true>)
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{
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// Hack... set the high bit for uppercase.
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const unsigned int HIGH_BIT = (1U << 31);
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@@ -732,12 +734,6 @@ std::string IntToString(T value, unsigned int base = 1
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if (value == 0)
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return "0";
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- bool negate = false;
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- if (value < 0)
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- {
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- negate = true;
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- value = 0-value; // VC .NET does not like -a
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- }
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std::string result;
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while (value > 0)
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{
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@@ -745,9 +741,28 @@ std::string IntToString(T value, unsigned int base = 1
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result = char((digit < 10 ? '0' : (CH - 10)) + digit) + result;
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value /= base;
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}
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+ return result;
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+}
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+
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+template <class T>
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+std::string IntToStringImpl(T value, unsigned int base, IsUnsigned<false>)
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+{
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+ bool negate = false;
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+ if (value < 0)
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+ {
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+ negate = true;
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+ value = 0-value; // VC .NET does not like -a
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+ }
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+ std::string result = IntToStringImpl(value, base, IsUnsigned<true>());
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if (negate)
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result = "-" + result;
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return result;
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+}
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+
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+template <class T>
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+std::string IntToString(T value, unsigned int base = 10)
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+{
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+ return IntToStringImpl(value, base, IsUnsigned<(static_cast<T>(-1) > 0)>());
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}
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/// \brief Converts an unsigned value to a string
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