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Promote source to a template paramter, to unify cases.

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This commit is contained in:
Thomas Harte 2024-01-19 10:41:47 -05:00
parent 1d6537c3a9
commit bdfbf779fa
1 changed files with 16 additions and 30 deletions
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46
Outputs/Log.hpp
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@ -14,9 +14,14 @@ namespace Log {
enum class Source {
WDFDC,
SCSI,
};
constexpr bool is_enabled(Source source) {
#ifdef NDEBUG
return false;
#endif
// Allow for compile-time source-level enabling and disabling of different sources.
switch(source) {
default: return true;
@ -25,50 +30,37 @@ constexpr bool is_enabled(Source source) {
constexpr const char *prefix(Source source) {
switch(source) {
case Source::WDFDC: return "[WD FDC]";
case Source::WDFDC: return "WD FDC";
case Source::SCSI: return "SCSI";
}
}
#ifdef NDEBUG
class Logger {
public:
Logger(Source) {}
struct LogLine {
void append(const char *, ...) {}
};
LogLine info() { return LogLine(); }
LogLine error() { return LogLine(); }
};
#else
#include <cstdio>
#include <cstdarg>
template <Source source>
class Logger {
public:
Logger(Source source) : source_(source) {}
Logger() {}
struct LogLine {
public:
LogLine(Source source, FILE *stream) : source_(source), stream_(stream) {
if(!is_enabled(source_)) return;
LogLine(FILE *stream) : stream_(stream) {
if constexpr (!is_enabled(source)) return;
const auto source_prefix = prefix(source);
if(source_prefix) {
fprintf(stream_, "%s ", source_prefix);
fprintf(stream_, "[%s] ", source_prefix);
}
}
~LogLine() {
if(!is_enabled(source_)) return;
if constexpr (!is_enabled(source)) return;
fprintf(stream_, "\n");
}
void append(const char *format, ...) {
if(!is_enabled(source_)) return;
if constexpr (!is_enabled(source)) return;
va_list args;
va_start(args, format);
vfprintf(stream_, format, args);
@ -76,17 +68,11 @@ class Logger {
}
private:
Source source_;
FILE *stream_;
};
LogLine info() { return LogLine(source_, stdout); }
LogLine error() { return LogLine(source_, stderr); }
private:
Source source_;
LogLine info() { return LogLine(stdout); }
LogLine error() { return LogLine(stderr); }
};
#endif
}