Merge pull request #31 from Finomnis/core_error

Switch to `core::error::Error` and remove `std` feature

.github/workflows/ci.yml

@@ -74,23 +74,6 @@ jobs:
       - name: Build
         run: cargo build --release --no-default-features
 
-
-  build_feature_std:
-    name: Build with 'std' feature
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout sources
-        uses: actions/checkout@v3
-
-      #- uses: Swatinem/rust-cache@v1
-
-      - name: Install stable toolchain
-        uses: dtolnay/rust-toolchain@stable
-
-      - name: Build
-        run: cargo build --release --no-default-features --features std
-
   build_feature_embedded_graphics_textstyle:
     name: Build with 'embedded_graphics_textstyle' feature
     runs-on: ubuntu-latest
@@ -260,7 +243,6 @@ jobs:
         build,
         build_no_std,
         build_no_features,
-        build_feature_std,
         build_feature_embedded_graphics_textstyle,
         build_examples,
         test,

Cargo.toml

@@ -1,8 +1,8 @@
 [package]
 name = "u8g2-fonts"
-version = "0.5.2"
+version = "0.6.0"
 edition = "2021"
-rust-version = "1.62"
+rust-version = "1.81"
 license-file = "LICENSE"
 readme = "README.md"
 repository = "https://github.com/Finomnis/u8g2-fonts"
@@ -23,8 +23,6 @@ exclude = [
 ]
 
 [features]
-# Enables std::error::Error impls
-std = []
 # Enables U8g2TextStyle for the embedded_graphics font interface
 embedded_graphics_textstyle = ["dep:embedded-graphics"]
 

examples/simulator/Cargo.toml

@@ -7,16 +7,12 @@ edition = "2021"
 
 
 [dependencies]
-u8g2-fonts = { path = "../..", features = [
-    "std",
-    "embedded_graphics_textstyle",
-] }
+u8g2-fonts = { path = "../..", features = ["embedded_graphics_textstyle"] }
 embedded-graphics = "0.8.0"
-embedded-graphics-simulator = "0.5.0"
+embedded-graphics-simulator = "0.7.0"
 anyhow = "1.0.71"
 
 [profile.release]
-strip = true  # Automatically strip symbols from the binary.
+strip = true      # Automatically strip symbols from the binary.
 lto = true
 codegen-units = 1
-

src/error.rs

@@ -53,13 +53,9 @@ impl<T> From<LookupError> for Error<T> {
     }
 }
 
-#[cfg(feature = "std")]
-#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
-impl std::error::Error for LookupError {}
+impl core::error::Error for LookupError {}
 
-#[cfg(feature = "std")]
-#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
-impl<DisplayError> std::error::Error for Error<DisplayError> where
+impl<DisplayError> core::error::Error for Error<DisplayError> where
     DisplayError: core::fmt::Debug + core::fmt::Display
 {
 }

src/lib.rs

@@ -11,8 +11,6 @@
 //! # Crate features
 //! Additional features can be enabled by adding the following features to your Cargo.toml.
 //!
-//! - `std`:
-//!    - derive [`std::error::Error`] for the crate's error types.
 //! - `embedded_graphics_textstyle`:
 //!    - enable [`U8g2TextStyle`] struct for drawing text with [`embedded_graphics::text::Text`].
 //!
@@ -24,7 +22,7 @@
 //!    - optimized for the U8g2 fonts
 //!    - supports rendering [`format_args!()`](format_args)
 //!        - can render everything that can be passed
-//!          to [`format!()`](std::format), [`write!()`](write) or [`println!()`](std::println)
+//!          to `format!()`, [`write!()`](write) or `println!()`
 //!        - does not allocate an intermediate string buffer
 //!    - supports multi-line vertical alignment
 //! - [`U8g2TextStyle`] — a compatibility layer for [`embedded_graphics::text`]
@@ -119,9 +117,6 @@
 )]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 
-#[cfg(feature = "std")]
-extern crate std;
-
 mod content;
 mod error;
 mod font;