mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2025-12-06 06:13:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

std.log: add functionality to check if a specific log level and scope are enabled

Browse Source
This commit is contained in:
Lee Cannon 2022-10-26 21:03:02 +01:00 committed by Veikka Tuominen
parent 4fa027a3cc
commit 93bdd04e88
1 changed files with 25 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
lib/std/log.zig
View File

@ -29,9 +29,9 @@
//! args: anytype,
//! ) void {
//! // Ignore all non-error logging from sources other than
//! // .my_project, .nice_library and .default
//! // .my_project, .nice_library and the default
//! const scope_prefix = "(" ++ switch (scope) {
//! .my_project, .nice_library, .default => @tagName(scope),
//! .my_project, .nice_library, std.log.default_log_scope => @tagName(scope),
//! else => if (@enumToInt(level) <= @enumToInt(std.log.Level.err))
//! @tagName(scope)
//! else
@ -125,24 +125,30 @@ fn log(
comptime format: []const u8,
args: anytype,
) void {
const effective_log_level = blk: {
inline for (scope_levels) |scope_level| {
if (scope_level.scope == scope) break :blk scope_level.level;
}
break :blk level;
};
if (comptime !logEnabled(message_level, scope)) return;
if (@enumToInt(message_level) <= @enumToInt(effective_log_level)) {
if (@hasDecl(root, "log")) {
if (@typeInfo(@TypeOf(root.log)) != .Fn)
@compileError("Expected root.log to be a function");
root.log(message_level, scope, format, args);
} else {
defaultLog(message_level, scope, format, args);
}
if (@hasDecl(root, "log")) {
if (@typeInfo(@TypeOf(root.log)) != .Fn)
@compileError("Expected root.log to be a function");
root.log(message_level, scope, format, args);
} else {
defaultLog(message_level, scope, format, args);
}
}
/// Determine if a specific log message level and scope combination are enabled for logging.
pub fn logEnabled(comptime message_level: Level, comptime scope: @Type(.EnumLiteral)) bool {
inline for (scope_levels) |scope_level| {
if (scope_level.scope == scope) return @enumToInt(message_level) <= @enumToInt(scope_level.level);
}
return @enumToInt(message_level) <= @enumToInt(level);
}
/// Determine if a specific log message level using the default log scope is enabled for logging.
pub fn defaultLogEnabled(comptime message_level: Level) bool {
return comptime logEnabled(message_level, default_log_scope);
}
/// The default implementation for root.log. root.log may forward log messages
/// to this function.
pub fn defaultLog(
@ -210,8 +216,10 @@ pub fn scoped(comptime scope: @Type(.EnumLiteral)) type {
};
}
pub const default_log_scope = .default;
/// The default scoped logging namespace.
pub const default = scoped(.default);
pub const default = scoped(default_log_scope);
/// Log an error message using the default scope. This log level is intended to
/// be used when something has gone wrong. This might be recoverable or might