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Adding additional String + operators for disambiguation. 

The operator bool() means that you could implicitly convert a String to a bool and then add it to it an int, for example.  Which means our operator+ has to match exactly or it will be ambiguous.
This commit is contained in:
David A. Mellis 2011-03-13 19:31:10 -04:00
parent 76776e7a46
commit a5f6e65242
1 changed files with 35 additions and 0 deletions
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35
cores/arduino/WString.h
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@ -175,5 +175,40 @@ public:
StringSumHelper(unsigned long num) : String(num, 10) {}
};
inline StringSumHelper operator + (const String &lhs, const String &rhs)
{ return StringSumHelper(lhs) + rhs; }
inline StringSumHelper operator + (const String &lhs, const char *cstr)
{ return StringSumHelper(lhs) + cstr; }
inline StringSumHelper operator + (const String &lhs, char c)
{ return StringSumHelper(lhs) + c; }
inline StringSumHelper operator + (const String &lhs, unsigned char c)
{ return StringSumHelper(lhs) + c; }
inline StringSumHelper operator + (const String &lhs, int num)
{ return StringSumHelper(lhs) + num; }
inline StringSumHelper operator + (const String &lhs, unsigned int num)
{ return StringSumHelper(lhs) + num; }
inline StringSumHelper operator + (const String &lhs, long num)
{ return StringSumHelper(lhs) + num; }
inline StringSumHelper operator + (const String &lhs, unsigned long num)
{ return StringSumHelper(lhs) + num; }
inline StringSumHelper operator + (const char *cstr, const String &rhs)
{ return StringSumHelper(cstr) + rhs; }
inline StringSumHelper operator + (char c, const String &rhs)
{ return StringSumHelper(c) + rhs; }
inline StringSumHelper operator + (unsigned char c, const String &rhs)
{ return StringSumHelper(c) + rhs; }
inline StringSumHelper operator + (int num, const String &rhs)
{ return StringSumHelper(num) + rhs; }
inline StringSumHelper operator + (unsigned int num, const String &rhs)
{ return StringSumHelper(num) + rhs; }
inline StringSumHelper operator + (long num, const String &rhs)
{ return StringSumHelper(num) + rhs; }
inline StringSumHelper operator + (unsigned long num, const String &rhs)
{ return StringSumHelper(num) + rhs; }
#endif // __cplusplus
#endif // String_class_h