Make clippy lints stricter

Cargo.toml

@@ -27,6 +27,19 @@ windows-sys = { version = "0.52.0", features = ["Win32_System_Console", "Win32_F
 [features]
 docs = []
 
+[lints.rust]
+missing_debug_implementations = "warn"
+missing_docs = "warn"
+
+[lints.clippy]
+unimplemented = "warn"
+undocumented_unsafe_blocks = "deny"
+dbg_macro = "warn"
+exhaustive_enums = "warn"
+exhaustive_structs = "warn"
+unwrap_used = "deny"
+use_debug = "warn"
+
 [package.metadata.docs.rs]
 features = ["docs", "rgb"]
 rustdoc-args = ["--cfg", "docsrs"]

src/color.rs

@@ -1,8 +1,12 @@
 /// An RGB color with 16 bits per channel.
 #[derive(Debug, Clone, Default, Eq, PartialEq)]
+#[allow(clippy::exhaustive_structs)]
 pub struct Color {
+    /// Red
     pub r: u16,
+    /// Green
     pub g: u16,
+    /// Blue
     pub b: u16,
 }
 
@@ -89,9 +93,9 @@ fn srgb_to_lin(channel: f64) -> f64 {
 
 // Luminance (Y)
 fn luminance(color: &Color) -> f64 {
-    let r = color.r as f64 / u16::MAX as f64;
-    let g = color.g as f64 / u16::MAX as f64;
-    let b = color.b as f64 / u16::MAX as f64;
+    let r = f64::from(color.r) / f64::from(u16::MAX);
+    let g = f64::from(color.g) / f64::from(u16::MAX);
+    let b = f64::from(color.b) / f64::from(u16::MAX);
     0.2126 * srgb_to_lin(r) + 0.7152 * srgb_to_lin(g) + 0.0722 * srgb_to_lin(b)
 }
 

src/lib.rs

@@ -1,5 +1,4 @@
 #![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
-#![deny(clippy::undocumented_unsafe_blocks)]
 
 //! Determines the background and foreground color of the terminal
 //! using the `OSC 10` and `OSC 11` terminal sequence.
@@ -112,7 +111,9 @@ pub use color::*;
 #[derive(Debug, Clone, PartialEq, Eq)]
 #[non_exhaustive]
 pub struct ColorScheme {
+    /// The foreground color of the terminal.
     pub foreground: Color,
+    /// The background color of the terminal.
     pub background: Color,
 }
 
@@ -156,6 +157,7 @@ pub enum Error {
     /// The terminal is known to be unsupported.
     #[error("unsupported terminal")]
     UnsupportedTerminal,
+    /// A precondition configured in [`QueryOptions::preconditions`] was not met.
     #[error("precondition not met: {0}")]
     UnmetPrecondition(String),
 }