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nestlog: log levels

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This commit is contained in:
Roland Conybeare 2023-09-15 17:39:35 -04:00
commit 5339e9b124
7 changed files with 76 additions and 24 deletions
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2
example/ex1/ex1.cpp
View file

@ -3,7 +3,7 @@
using namespace xo;
void A(int x) {
XO_SCOPE(log);
XO_SCOPE(log, info);
log("x:", x);
}

4
example/ex2/ex2.cpp
View file

@ -6,7 +6,7 @@ using namespace xo;
int
fib(int n) {
scope log(XO_SSETUP0(), ":n ", n);
scope log(XO_ENTER0(info), ":n ", n);
int retval = 1;
@ -26,7 +26,7 @@ main(int argc, char ** argv) {
int n = 4;
scope log(XO_SSETUP0(), ":n ", 4);
scope log(XO_ENTER0(info), ":n ", 4);
int fn = fib(n);

9
example/ex3/ex3.cpp
View file

@ -6,7 +6,7 @@ using namespace xo;
int
fib(int n) {
scope log(XO_ENTER0(), tag("n", n));
scope log(XO_ENTER0(info), tag("n", n));
int retval = 1;
@ -21,6 +21,7 @@ fib(int n) {
int
main(int argc, char ** argv) {
log_config::min_log_level = log_level::info;
log_config::time_enabled = true;
log_config::time_local_flag = true;
log_config::style = FS_Streamlined;
@ -34,12 +35,12 @@ main(int argc, char ** argv) {
int n = 4;
scope log(XO_ENTER0(), ":n ", 4);
scope log(XO_ENTER0(info), ":n ", 4);
int fn = fib(n);
log(tag("n", n));
log("<-", xtag("fib(n)", fn));
log && log(tag("n", n));
log && log("<-", xtag("fib(n)", fn));
}
/* ex3/ex3.cpp */

7
include/nestlog/log_config.hpp
View file

@ -2,6 +2,7 @@
#pragma once
#include "log_level.hpp"
#include "function.hpp"
#include "nestlog/color.hpp"
#include <cstdint>
@ -10,6 +11,8 @@ namespace xo {
/* Tag here b/c we want header-only library */
template <typename Tag>
struct log_config_impl {
/* display log messages with severity >= .log_level */
static log_level min_log_level;
/* true to log local time */
static bool time_enabled;
/* true to log time-of-day in local coords; false for UTC coords */
@ -41,6 +44,10 @@ namespace xo {
static std::uint32_t code_location_color;
}; /*log_config_impl*/
template <typename Tag>
log_level
log_config_impl<Tag>::min_log_level = log_level::default_level;
template <typename Tag>
bool
log_config_impl<Tag>::time_enabled = 1;

42
include/nestlog/log_level.hpp Normal file
View file

@ -0,0 +1,42 @@
/* @file log_level.hpp */
#include <cstdint>
namespace xo {
enum class log_level : std::uint32_t {
/* control log message severity
* silent > severe > error > warning > info > chatty
*/
chatty,
info,
warning,
error,
severe,
silent,
default_level = error
}; /*log_level*/
inline bool
operator>(log_level x, log_level y) {
return (static_cast<std::uint32_t>(x) > static_cast<std::uint32_t>(y));
}
inline bool
operator>=(log_level x, log_level y) {
return (static_cast<std::uint32_t>(x) >= static_cast<std::uint32_t>(y));
}
inline bool
operator<(log_level x, log_level y) {
return (static_cast<std::uint32_t>(x) < static_cast<std::uint32_t>(y));
}
inline bool
operator<=(log_level x, log_level y) {
return (static_cast<std::uint32_t>(x) <= static_cast<std::uint32_t>(y));
}
} /*namespace xo*/
/* end log_level.hpp */

32
include/nestlog/scope.hpp
View file

@ -16,16 +16,16 @@ namespace xo {
template <typename ChartT, typename Traits>
class state_impl;
# define XO_ENTER0() xo::scope_setup(xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__)
# define XO_ENTER1(debug_flag) xo::scope_setup(xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__, debug_flag)
# define XO_ENTER0(lvl) xo::scope_setup(xo::log_level::lvl, xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__)
# define XO_ENTER1(lvl, debug_flag) xo::scope_setup(xo::log_level::lvl, xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__, debug_flag)
//# define XO_SSETUP0() xo::scope_setup(__FUNCTION__)
# define XO_SSETUP0() xo::scope_setup(xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__)
//# define XO_SSETUP0(lvl) xo::scope_setup(xo::log_level::lvl, xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__)
/* throw exception if condition not met*/
# define XO_EXPECT(f,msg) if(!(f)) { throw std::runtime_error(msg); }
/* establish scope using current function name */
# define XO_SCOPE(name) xo::scope name(xo::scope_setup(xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__))
# define XO_SCOPE(name, lvl) xo::scope name(xo::scope_setup(xo::log_level::lvl, xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__))
/* like XO_SCOPE(name), but also set enabled flag */
# define XO_SCOPE2(name, debug_flag) xo::scope name(xo::scope_setup(xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__, debug_flag))
# define XO_SCOPE_DISABLED(name) xo::scope name(xo::scope_setup(xo::log_config::style, __PRETTY_FUNCTION__, __FILE__, __LINE__, false))
@ -35,17 +35,21 @@ namespace xo {
* use to disambiguate setup from other arguments
*/
struct scope_setup {
scope_setup(function_style style, std::string_view name1, std::string_view name2,
std::string_view file, std::uint32_t line, bool enabled_flag)
: style_{style}, name1_{name1}, name2_{name2}, file_{file}, line_{line}, enabled_flag_{enabled_flag} {}
scope_setup(function_style style, std::string_view name1, std::string_view file, std::uint32_t line, bool enabled_flag)
: scope_setup(style, name1, "", file, line, enabled_flag) {}
scope_setup(function_style style, std::string_view name1, std::string_view file, std::uint32_t line)
: scope_setup(style, name1, file, line, true /*enabled_flag*/) {}
scope_setup(log_level level, function_style style, std::string_view name1, std::string_view name2,
std::string_view file, std::uint32_t line)
: log_level_{level}, style_{style}, name1_{name1}, name2_{name2}, file_{file}, line_{line} {}
scope_setup(log_level level, function_style style,
std::string_view name1, std::string_view file, std::uint32_t line)
: scope_setup(level, style, name1, "" /*name2*/, file, line) {}
bool is_enabled() const { return (this->log_level_ >= log_config::min_log_level); }
//static scope_setup literal(std::string_view name1, bool enabled_flag = true) { return scope_setup(FS_Literal, name1, enabled_flag); }
//static scope_setup literal(std::string_view name1, std::string_view name2, bool enabled_flag = true) { return scope_setup(FS_Literal, name1, name2, enabled_flag); }
/* threshold level for logging -- write messages with severity >= this level */
log_level log_level_ = log_level::error;
/* FS_Pretty | FS_Streamlined | FS_Simple */
function_style style_ = FS_Pretty;
std::string_view name1_ = "<.name1>";
std::string_view name2_ = "<.name2>";
@ -53,8 +57,6 @@ namespace xo {
std::string_view file_ = "<.file>";
/* __LINE__ */
std::uint32_t line_ = 0;
/* true iff output enabled for this scope */
bool enabled_flag_ = false;
}; /*scope_setup*/
/* nesting logger
@ -182,9 +184,9 @@ namespace xo {
name2_{std::move(setup.name2_)},
file_{std::move(setup.file_)},
line_{setup.line_},
finalized_{!setup.enabled_flag_}
finalized_{!(setup.is_enabled())}
{
if(setup.enabled_flag_) {
if(setup.is_enabled()) {
state_impl_type * logstate = basic_scope::require_thread_local_state();
std::ostream & os = logstate2stream(logstate);

4
include/nestlog/time.hpp
View file

@ -1,4 +1,4 @@
/* @file Time.hpp */
/* @file time.hpp */
#pragma once
@ -359,4 +359,4 @@ namespace std {
} /*namespace chrono*/
} /*namespace std*/
/* end Time.hpp */
/* end time.hpp */