This repo shows an example how to use libfmt and manually configured static reflection to format user defined structures.
Essentially it provides template specializations for fmt::formatter that allow formatting of structs for which
reflection information was setup via the reflection template.
Thanks to this blog which helped a lot :-)
Example:
struct Inner {...};
struct Outer {...};
template<>
struct reflection<Outer> {
/*definition of class name and field names has to provided manually...*/
};
template<>
struct reflection<Inner> {
/*definition of class name and field names has to provided manually...*/
};
auto outer = Outer{.a=1,.b="hello",.inner={.x=3.12,.y=" ",.z=2}};
std::string simple = fmt::format("{:s}", outer); // :s means format as simple
assert(simple == "a|hello|3.12| |2");
std::string extended = fmt::format("{:e}",outer); // :e means format as extended
assert(extended == "Outer{.a=1, .b=hello, .inner=Inner{.x=3.12, .y= , .z=2}}");
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