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xo-indentlog: cosmetic adj in cond.hpp

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Roland Conybeare 2026-01-20 16:45:40 -05:00
commit 310dabde67
1 changed files with 19 additions and 19 deletions
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38
include/xo/indentlog/print/cond.hpp
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@ -20,51 +20,51 @@ namespace xo {
template <typename T, typename U>
struct cond_impl {
public:
cond_impl(bool condition, T const & then_value, U const & else_value)
cond_impl(bool condition, const T & if_true, const U & if_false)
: condition_{condition},
then_value_{then_value},
else_value_{else_value} {}
if_true_{if_true},
if_false_{if_false} {}
bool condition() const { return condition_; }
T const & then_value() const { return then_value_; }
U const & else_value() const { return else_value_; }
const T & if_true() const { return if_true_; }
const U & if_false() const { return if_false_; }
private:
bool condition_;
T then_value_;
U else_value_;
T if_true_;
U if_false_;
};
/** Create conditional stream inserter.
*
* @param condition when true, print @p then_value; otherwise print @p else_value
* @param then_value value to print when condition is true
* @param else_value value to print when condition is false
* @param condition when true, print @p if_true; otherwise print @p if_false
* @param if_true value to print when condition is true
* @param if_false value to print when condition is false
*
* Example:
* @code
* std::cout << cond(ptr != nullptr, xtag("ptr", *ptr), "nullptr");
* std::cout << cond(ptr, xtag("ptr", *ptr), "nullptr");
* @endcode
**/
template <typename T, typename U>
auto
cond(bool condition, T && then_value, U && else_value)
cond(bool condition, T && if_true, U && if_false)
{
return cond_impl<std::decay_t<T>, std::decay_t<U>>
(condition,
std::forward<T>(then_value),
std::forward<U>(else_value));
std::forward<T>(if_true),
std::forward<U>(if_false));
}
/** Stream insertion operator for cond_impl **/
template <typename T, typename U>
inline std::ostream &
operator<<(std::ostream & os, cond_impl<T, U> const & c)
operator<<(std::ostream & os, const cond_impl<T, U> & c)
{
if (c.condition())
os << c.then_value();
os << c.if_true();
else
os << c.else_value();
os << c.if_false();
return os;
}
@ -79,9 +79,9 @@ namespace xo {
const target_type & c)
{
if (c.condition())
return ppdetail<T>::print_pretty(ppii, c.then_value());
return ppdetail<T>::print_pretty(ppii, c.if_true());
else
return ppdetail<U>::print_pretty(ppii, c.else_value());
return ppdetail<U>::print_pretty(ppii, c.if_false());
}
};
}