Generate glam source code offline instead of with macros (#294)

Replaces macro codegen with code generated offline by a code generator tool.

The intention is to improve source code readability for users.

* Move implementation from core module to codegen templates.

All scalar, sse2 and wasm32 code is inside the codegen templates now,
the core module is removed.

* Making const creation functions, deprecating const macros.

* Bump minimum Rust version to 1.58.1 and the 2021 edition

Needed for const pointer dereferences and assert in a const eval context.

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        toolchain: [1.52.1, stable, beta, nightly]
+        toolchain: [1.58.1, stable, beta, nightly]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2

.github/workflows/coverage.yml

@@ -13,7 +13,7 @@ jobs:
       #   run: cargo install cargo-tarpaulin
 
       - name: Generate code coverage
-        run: cargo tarpaulin -v --timeout 120 --out Lcov --output-dir ./coverage
+        run: cargo tarpaulin --timeout 120 --out Lcov --output-dir ./coverage
 
       - name: Upload to coveralls.io
         uses: coverallsapp/github-action@master

.tarpaulin.toml

@@ -1,7 +1,7 @@
 [sse2_math]
 features = "approx bytemuck mint rand rkyv serde debug-glam-assert"
-exclude-files = ["src/transform.rs", "src/core/wasm32/*", "src/swizzles/vec3a_impl_wasm32.rs", "src/swizzles/vec4_impl_wasm32.rs", "benches/*", "tests/support/mod.rs"]
+exclude-files = ["codegen/*", "src/wasm32.rs", "src/bool/wasm32/*", "src/f32/wasm32/*", "src/swizzles/vec3a_impl_wasm32.rs", "src/swizzles/vec4_impl_wasm32.rs", "benches/*", "tests/support.rs"]
 
 [scalar_math]
 features = "scalar-math approx bytemuck mint rand rkyv serde debug-glam-assert"
-exclude-files = ["src/transform.rs", "src/core/wasm32/*", "src/swizzles/vec3a_impl_wasm32.rs", "src/swizzles/vec4_impl_wasm32.rs", "benches/*", "tests/support/mod.rs"]
+exclude-files = ["codegen/*", "src/wasm32.rs", "src/bool/wasm32/*", "src/f32/wasm32/*", "src/swizzles/vec3a_impl_wasm32.rs", "src/swizzles/vec4_impl_wasm32.rs", "benches/*", "tests/support.rs"]

CHANGELOG.md

@@ -5,6 +5,26 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog], and this project adheres to
 [Semantic Versioning].
 
+## [Unreleased]
+
+### Breaking changes
+
+* Minimum Supported Version of Rust bumped to 1.58.1 to allow const pointer
+  dereferences in constant evaluation.
+
+* The `abs_diff_eq` method on `Mat2` and `DMat2` now takes `other` by value
+  instead of reference. This is consistent with the other matrix types.
+
+### Changed
+
+* Source code is now largely generated. This largely removes the usage of macros
+  internally to improve readability. There should be no change in API or
+  behavior.
+
+### Removed
+
+* Deleted deprecated `TransformRT` and `TransformSRT` types.
+
 ## [0.20.5] - 2022-04-12
 
 ### Fixed

Cargo.toml

@@ -1,14 +1,15 @@
 [package]
 name = "glam"
 version = "0.20.5" # remember to update html_root_url
-edition = "2018"
+edition = "2021"
 authors = ["Cameron Hart <cameron.hart@gmail.com>"]
 description = "A simple and fast 3D math library for games and graphics"
 repository = "https://github.com/bitshifter/glam-rs"
 readme = "README.md"
 license = "MIT OR Apache-2.0"
 keywords = ["gamedev", "math", "matrix", "vector", "quaternion"]
 categories = ["game-engines", "no-std"]
+rust-version = "1.58.1"
 
 [badges]
 maintenance = { status = "actively-developed" }
@@ -27,9 +28,6 @@ glam-assert = []
 # this is primarily for testing the fallback implementation
 scalar-math = []
 
-# deprecated and will move to a separate crate
-transform-types = []
-
 # libm is required when building no_std
 libm = ["num-traits/libm"]
 
@@ -95,11 +93,6 @@ harness = false
 name = "quat"
 harness = false
 
-[[bench]]
-name = "transform"
-harness = false
-required-features = ["transform-types"]
-
 [[bench]]
 name = "vec2"
 harness = false

README.md

@@ -2,7 +2,7 @@
 
 [![Build Status]][github-ci] [![Coverage Status]][coveralls.io]
 [![Latest Version]][crates.io] [![docs]][docs.rs]
-[![Minimum Supported Rust Version]][Rust 1.52]
+[![Minimum Supported Rust Version]][Rust 1.58.1]
 
 A simple and fast 3D math library for games and graphics.
 
@@ -128,9 +128,7 @@ glam = { version = "0.20.4", default-features = false }
 
 ### Minimum Supported Rust Version (MSRV)
 
-The minimum supported version of Rust for `glam` is `1.52.1`.
-
-`wasm32` SIMD intrinsics require Rust `1.54.0`.
+The minimum supported version of Rust for `glam` is `1.58.1`.
 
 ## Conventions
 
@@ -249,5 +247,5 @@ See [ATTRIBUTION.md] for details.
 [crates.io]: https://crates.io/crates/glam/
 [docs]: https://docs.rs/glam/badge.svg
 [docs.rs]: https://docs.rs/glam/
-[Minimum Supported Rust Version]: https://img.shields.io/badge/Rust-1.52.1-blue?color=fc8d62&logo=rust
-[Rust 1.52]: https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1521-2021-05-10
+[Minimum Supported Rust Version]: https://img.shields.io/badge/Rust-1.58.1-blue?color=fc8d62&logo=rust
+[Rust 1.58.1]: https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1581-2022-01-19

build_all_msrv.sh

@@ -2,8 +2,8 @@
 
 set -e
 
-CARGO='rustup run 1.52.1 cargo'
-$CARGO test --features "bytemuck mint rand serde debug-glam-assert transform-types" && \
-$CARGO test --features "scalar-math bytemuck mint rand serde debug-glam-assert transform-types" && \
-$CARGO test --no-default-features --features "libm scalar-math bytemuck mint rand serde debug-glam-assert transform-types" && \
+CARGO='rustup run 1.58.1 cargo'
+$CARGO test --features "bytemuck mint rand serde debug-glam-assert" && \
+$CARGO test --features "scalar-math bytemuck mint rand serde debug-glam-assert" && \
+$CARGO test --no-default-features --features "libm scalar-math bytemuck mint rand serde debug-glam-assert" && \
 $CARGO bench --no-run

build_and_test_features.sh

@@ -6,13 +6,13 @@ set -e
 FEATURE_SETS=(
   # std
   "std"
-  "std approx bytemuck mint rand serde debug-glam-assert transform-types"
-  "std scalar-math approx bytemuck mint rand serde debug-glam-assert transform-types"
+  "std approx bytemuck mint rand serde debug-glam-assert"
+  "std scalar-math approx bytemuck mint rand serde debug-glam-assert"
   "std cuda"
   "std scalar-math cuda"
   # no_std
   "libm"
-  "libm scalar-math approx bytemuck mint rand serde debug-glam-assert transform-types"
+  "libm scalar-math approx bytemuck mint rand serde debug-glam-assert"
 )
 
 rustc --version

clippy.toml

@@ -1 +1 @@
-msrv = "1.51"
+msrv = "1.58"

codegen/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "codegen"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = { version = "1", default-features = false }
+clap = { version = "3", default-features = false, features = ["cargo", "std"] }
+git2 = { version = "0.14", default-features = false }
+globset = { version = "0.4", default-features = false }
+rustfmt-wrapper = { version = "0.1" }
+serde = { version = "1.0", default-features = false, features = ["std"] }
+serde_json = { version = "1.0", default-features = false, features = ["std"] }
+tera = { version = "1", default-features = false }