xo-umbrella2/xo-ppsink/example/ex3d/ex3d.cpp

40 lines
936 B
C++

/* example ex3d/ex3d.cpp
*
* @author Roland Conybeare, Jul 2026
*
* xo-ppsink port of xo-indentlog/example/ex3, slice F: max indent width.
*
* scope_config::max_indent_width caps total indentation, so deeply-nested
* scopes stop marching rightward. Here indent_width=2, max_indent_width=8,
* so from nesting depth 4 on, the banner indent stays at 8 columns.
*/
#include <xo/ppsink/scope.hpp>
#include <xo/ppsink/scope_macros.hpp>
#include <xo/ppsink/tag.hpp>
using xo::pp::scope;
using xo::pp::scope_config;
using xo::pp::log_level;
using xo::pp::tag;
void
descend(int n) {
scope log(XO_ENTER0_(info), tag("n", n));
if (n > 0)
descend(n - 1);
}
int
main(int argc, char ** argv) {
scope_config::min_log_level = log_level::info;
scope_config::indent_width = 2;
scope_config::max_indent_width = 8; /* indent stops growing past 8 columns */
descend(8);
return 0;
}
/* end ex3d.cpp */