chore: tidy some interfaces and naming (#22)

Signed-off-by: tison <wander4096@gmail.com>

Cargo.toml

@@ -23,7 +23,7 @@ license = "Apache-2.0"
 readme = "README.md"
 repository = "https://github.com/tisonkun/logforth"
 rust-version = "1.71.0"
-version = "0.5.0"
+version = "0.6.0"
 
 [package.metadata.docs.rs]
 all-features = true

src/filter/min_level.rs

@@ -18,10 +18,23 @@ use log::Metadata;
 use crate::filter::Filter;
 use crate::filter::FilterResult;
 
+/// A filter that checks if the log level is at most the specified level.
+///
+/// From least to most verbose, the levels are:
+///
+/// - `Error`
+/// - `Warn`
+/// - `Info`
+/// - `Debug`
+/// - `Trace`
+///
+/// If MaxLevel is set to `Info`, it will allow `Error`, `Warn`, and `Info` logs.
+///
+/// If MaxLevel is set to `Off`, it will reject all logs.
 #[derive(Debug, Clone)]
-pub struct MinLevel(pub LevelFilter);
+pub struct MaxLevel(pub LevelFilter);
 
-impl MinLevel {
+impl MaxLevel {
     pub(crate) fn filter(&self, metadata: &Metadata) -> FilterResult {
         let level = metadata.level();
         if level <= self.0 {
@@ -31,14 +44,14 @@ impl MinLevel {
         }
     }
 }
-impl From<MinLevel> for Filter {
-    fn from(filter: MinLevel) -> Self {
-        Filter::MinLevel(filter)
+impl From<MaxLevel> for Filter {
+    fn from(filter: MaxLevel) -> Self {
+        Filter::MaxLevel(filter)
     }
 }
 
 impl From<LevelFilter> for Filter {
     fn from(filter: LevelFilter) -> Self {
-        Filter::MinLevel(MinLevel(filter))
+        Filter::MaxLevel(MaxLevel(filter))
     }
 }

src/filter/mod.rs

@@ -13,7 +13,7 @@
 // limitations under the License.
 
 pub use self::custom::CustomFilter;
-pub use self::min_level::MinLevel;
+pub use self::min_level::MaxLevel;
 
 mod custom;
 mod min_level;
@@ -30,14 +30,14 @@ pub enum FilterResult {
 
 #[derive(Debug)]
 pub enum Filter {
-    MinLevel(MinLevel),
+    MaxLevel(MaxLevel),
     Custom(CustomFilter),
 }
 
 impl Filter {
     pub(crate) fn filter(&self, metadata: &log::Metadata) -> FilterResult {
         match self {
-            Filter::MinLevel(filter) => filter.filter(metadata),
+            Filter::MaxLevel(filter) => filter.filter(metadata),
             Filter::Custom(filter) => filter.filter(metadata),
         }
     }

src/logger.rs

@@ -124,26 +124,30 @@ impl Dispatch {
 /// This struct implements [log::Log] to bridge Logforth's logging implementations
 /// with the [log] crate.
 #[derive(Debug)]
-pub struct Logger<const APPEND: bool = true> {
+pub struct Logger {
     dispatches: Vec<Dispatch>,
 }
 
-impl Default for Logger<false> {
+impl Default for Logger {
     fn default() -> Self {
         Self::new()
     }
 }
 
-impl Logger<false> {
+impl Logger {
     /// Create a new [Logger] instance.
-    ///
-    /// The [Logger] instance is incomplete and must have at least one [Dispatch] added to it.
-    pub fn new() -> Logger<false> {
+    pub fn new() -> Logger {
         Self { dispatches: vec![] }
     }
 }
 
-impl Logger<true> {
+impl Logger {
+    /// Add a [Dispatch] to the [Logger].
+    pub fn dispatch(mut self, dispatch: Dispatch) -> Logger {
+        self.dispatches.push(dispatch);
+        self
+    }
+
     /// Set up the global logger with the [Logger] instance.
     ///
     /// # Errors
@@ -156,16 +160,6 @@ impl Logger<true> {
     }
 }
 
-impl<const APPEND: bool> Logger<APPEND> {
-    /// Add a [Dispatch] to the [Logger].
-    pub fn dispatch(mut self, dispatch: Dispatch) -> Logger<true> {
-        self.dispatches.push(dispatch);
-        Logger {
-            dispatches: self.dispatches,
-        }
-    }
-}
-
 impl log::Log for Logger {
     fn enabled(&self, metadata: &Metadata) -> bool {
         self.dispatches