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// SPDX-License-Identifier: MIT
#ifndef RGBDS_BACKTRACE_HPP
#define RGBDS_BACKTRACE_HPP
#include <inttypes.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <vector>
#include "style.hpp"
#define TRACE_SEPARATOR "<-"
#define NODE_SEPARATOR "::"
#define REPT_NODE_PREFIX "REPT~"
struct Tracing {
uint64_t depth = 0;
bool collapse = false;
bool loud = false;
};
extern Tracing tracing;
bool trace_ParseTraceDepth(char const *arg);
template<typename NodeT, typename NameFnT, typename LineNoFnT>
void trace_PrintBacktrace(std::vector<NodeT> const &stack, NameFnT getName, LineNoFnT getLineNo) {
size_t n = stack.size();
if (n == 0) {
return; // LCOV_EXCL_LINE
}
auto printLocation = [&](size_t i) {
NodeT const &item = stack[n - i - 1];
style_Reset(stderr);
if (!tracing.collapse) {
fputs(" ", stderr); // Just three spaces; the fourth will be printed next
}
fprintf(stderr, " %s ", i == 0 ? "at" : TRACE_SEPARATOR);
style_Set(stderr, STYLE_CYAN, true);
fputs(getName(item), stderr);
style_Set(stderr, STYLE_CYAN, false);
fprintf(stderr, "(%" PRIu32 ")", getLineNo(item));
if (!tracing.collapse) {
putc('\n', stderr);
}
};
if (tracing.collapse) {
fputs(" ", stderr); // Just three spaces; the fourth will be handled by the loop
}
if (tracing.depth == 0 || static_cast<size_t>(tracing.depth) >= n) {
for (size_t i = 0; i < n; ++i) {
printLocation(i);
}
} else {
size_t last = tracing.depth / 2;
size_t first = tracing.depth - last;
size_t skipped = n - tracing.depth;
for (size_t i = 0; i < first; ++i) {
printLocation(i);
}
style_Reset(stderr);
if (tracing.collapse) {
fputs(" " TRACE_SEPARATOR, stderr);
} else {
fputs(" ", stderr); // Just three spaces; the fourth will be printed next
}
fprintf(stderr, " ...%zu more%s", skipped, last ? "..." : "");
if (!tracing.collapse) {
putc('\n', stderr);
}
for (size_t i = n - last; i < n; ++i) {
printLocation(i);
}
}
if (tracing.collapse) {
putc('\n', stderr);
}
style_Reset(stderr);
}
#endif // RGBDS_BACKTRACE_HPP
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