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Add user-defined conversions to UCIOption

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Greatly improves the usage. User defined conversions
are a novelity for SF, another amazing C++ facility
at work !

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-12-28 18:27:18 +01:00
parent ae65ab25d5
commit 0759d8f430
6 changed files with 44 additions and 54 deletions
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34
src/ucioption.h
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@@ -35,10 +35,19 @@ public:
UCIOption(bool v, std::string type = "check");
UCIOption(int v, int min, int max);
template<typename T> T value() const;
void operator=(const std::string& v);
void operator=(bool v) { *this = std::string(v ? "true" : "false"); }
operator int() const {
assert(type == "check" || type == "button" || type == "spin");
return (type == "spin" ? atoi(currentValue.c_str()) : currentValue == "true");
}
operator std::string() const {
assert(type == "string");
return currentValue;
}
private:
friend std::ostream& operator<<(std::ostream&, const OptionsMap&);
@@ -48,29 +57,6 @@ private:
};
/// UCIOption::value() definition and specializations
template<typename T>
T UCIOption::value() const {
assert(type == "spin");
return T(atoi(currentValue.c_str()));
}
template<>
inline std::string UCIOption::value<std::string>() const {
assert(type == "string");
return currentValue;
}
template<>
inline bool UCIOption::value<bool>() const {
assert(type == "check" || type == "button");
return currentValue == "true";
}
/// Custom comparator because UCI options should be case insensitive
struct CaseInsensitiveLess {
bool operator() (const std::string&, const std::string&) const;