hare

commit 72058e38cf07d3ecc9f70d2e7b5588a15676c8b0
parent e8d28ba3da6df2fecd13869045678b4e4a0cc3ff
Author: Jose Lombera <jose@lombera.dev>
Date:   Wed,  7 Sep 2022 01:08:26 -0500

log: add default logger

Add reference to default logger that doesn't change after updating
global logger with log::setlogger().  This allows user to restore global
logger to default value.

Before:

    log::setlogger(log::silent);
    log::print("NOT LOGGED");

    // At this point log::global == log::silent,
    // thus next line has no effect.
    log::setlogger(log::global);
    log::print("NOT LOGGED EITHER");

After:

    log::setlogger(log::silent);
    log::print("NOT LOGGED");
    log:setlogger(log::default);
    log::print("LOGGED");

Also, make pointer to global logger private, effectively making it an
implementation detail.

Signed-off-by: Jose Lombera <jose@lombera.dev>

Diffstat:
M
log/global.ha
 | 
11
+++++++----

1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/log/global.ha b/log/global.ha
@@ -1,10 +1,13 @@
 use io;
 use os;
 
-// The default global logger instance.
-export let global: *logger = &_global;
+// The global logger instance.
+let global: *logger = &_default;
 
-let _global: stdlogger = stdlogger {
+// Default logger that writes to [[os::stderr]].
+export let default: *logger = &_default;
+
+let _default: stdlogger = stdlogger {
 	println = &log_println,
 	printfln = &log_printfln,
 	sink = -1: io::file,
@@ -12,7 +15,7 @@ let _global: stdlogger = stdlogger {
 
 @init fn init() void = {
 	// XXX: Would be nice not to have to do this
-	_global.sink = os::stderr;
+	_default.sink = os::stderr;
 };
 
 // Sets the global logger instance to the provided logger.