mirror of
https://github.com/rtic-rs/rtic.git
synced 2024-11-23 12:12:50 +01:00
rtic-macros: wrap everything in macro_rules! to improve the error experience and
royally **** up the DX experience (for lib.rs in rtic-macros, at least :P)
This commit is contained in:
datdenkikniet
parent
68ccf0423d
commit
2ba09dd68d
2 changed files with 86 additions and 70 deletions
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@ -1,10 +1,3 @@
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#[cfg(not(any(
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feature = "cortex-m-source-masking",
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feature = "cortex-m-basepri",
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feature = "test-template"
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)))]
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compile_error!("No backend selected");
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#[cfg(any(feature = "cortex-m-source-masking", feature = "cortex-m-basepri"))]
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pub use cortex::*;
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@ -4,87 +4,110 @@
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)]
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//deny_warnings_placeholder_for_ci
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use proc_macro::TokenStream;
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use std::{env, fs, path::Path};
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macro_rules! with_backend {
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(mod: [$($mod:tt),*]) => {
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$(
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with_backend!{ mod $mod; }
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)*
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};
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($($tokens:tt)*) => {
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#[cfg(any(
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feature = "cortex-m-source-masking",
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feature = "cortex-m-basepri",
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feature = "test-template"
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))]
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$($tokens)*
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};
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}
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mod analyze;
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mod check;
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mod codegen;
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mod syntax;
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with_backend! { mod: [analyze, check, codegen, syntax] }
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with_backend! { use std::{fs, env, path::Path}; }
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with_backend! { use proc_macro::TokenStream; }
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// Used for mocking the API in testing
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#[doc(hidden)]
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#[proc_macro_attribute]
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pub fn mock_app(args: TokenStream, input: TokenStream) -> TokenStream {
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if let Err(e) = syntax::parse(args, input) {
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e.to_compile_error().into()
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} else {
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"fn main() {}".parse().unwrap()
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with_backend! {
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// Used for mocking the API in testing
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#[doc(hidden)]
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#[proc_macro_attribute]
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pub fn mock_app(args: TokenStream, input: TokenStream) -> TokenStream {
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if let Err(e) = syntax::parse(args, input) {
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e.to_compile_error().into()
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} else {
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"fn main() {}".parse().unwrap()
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}
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}
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}
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/// Attribute used to declare a RTIC application
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///
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/// For user documentation see the [RTIC book](https://rtic.rs)
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///
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/// # Panics
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///
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/// Should never panic, cargo feeds a path which is later converted to a string
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#[proc_macro_attribute]
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pub fn app(args: TokenStream, input: TokenStream) -> TokenStream {
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let (app, analysis) = match syntax::parse(args, input) {
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Err(e) => return e.to_compile_error().into(),
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Ok(x) => x,
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};
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with_backend! {
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/// Attribute used to declare a RTIC application
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///
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/// For user documentation see the [RTIC book](https://rtic.rs)
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///
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/// # Panics
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///
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/// Should never panic, cargo feeds a path which is later converted to a string
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#[proc_macro_attribute]
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pub fn app(_args: TokenStream, _input: TokenStream) -> TokenStream {
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let (app, analysis) = match syntax::parse(_args, _input) {
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Err(e) => return e.to_compile_error().into(),
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Ok(x) => x,
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};
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if let Err(e) = check::app(&app, &analysis) {
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return e.to_compile_error().into();
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}
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if let Err(e) = check::app(&app, &analysis) {
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return e.to_compile_error().into();
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}
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let analysis = analyze::app(analysis, &app);
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let analysis = analyze::app(analysis, &app);
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let ts = codegen::app(&app, &analysis);
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let ts = codegen::app(&app, &analysis);
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// Default output path: <project_dir>/target/
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let mut out_dir = Path::new("target");
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// Default output path: <project_dir>/target/
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let mut out_dir = Path::new("target");
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// Get output directory from Cargo environment
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// TODO don't want to break builds if OUT_DIR is not set, is this ever the case?
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let out_str = env::var("OUT_DIR").unwrap_or_else(|_| "".to_string());
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// Get output directory from Cargo environment
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// TODO don't want to break builds if OUT_DIR is not set, is this ever the case?
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let out_str = env::var("OUT_DIR").unwrap_or_else(|_| "".to_string());
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if !out_dir.exists() {
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// Set out_dir to OUT_DIR
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out_dir = Path::new(&out_str);
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if !out_dir.exists() {
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// Set out_dir to OUT_DIR
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out_dir = Path::new(&out_str);
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// Default build path, annotated below:
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// $(pwd)/target/thumbv7em-none-eabihf/debug/build/rtic-<HASH>/out/
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// <project_dir>/<target-dir>/<TARGET>/debug/build/rtic-<HASH>/out/
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//
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// traverse up to first occurrence of TARGET, approximated with starts_with("thumbv")
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// and use the parent() of this path
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//
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// If no "target" directory is found, <project_dir>/<out_dir_root> is used
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for path in out_dir.ancestors() {
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if let Some(dir) = path.components().last() {
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let dir = dir.as_os_str().to_str().unwrap();
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// Default build path, annotated below:
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// $(pwd)/target/thumbv7em-none-eabihf/debug/build/rtic-<HASH>/out/
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// <project_dir>/<target-dir>/<TARGET>/debug/build/rtic-<HASH>/out/
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//
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// traverse up to first occurrence of TARGET, approximated with starts_with("thumbv")
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// and use the parent() of this path
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//
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// If no "target" directory is found, <project_dir>/<out_dir_root> is used
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for path in out_dir.ancestors() {
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if let Some(dir) = path.components().last() {
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let dir = dir.as_os_str().to_str().unwrap();
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if dir.starts_with("thumbv") || dir.starts_with("riscv") {
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if let Some(out) = path.parent() {
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out_dir = out;
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if dir.starts_with("thumbv") || dir.starts_with("riscv") {
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if let Some(out) = path.parent() {
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out_dir = out;
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break;
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}
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// If no parent, just use it
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out_dir = path;
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break;
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}
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// If no parent, just use it
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out_dir = path;
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break;
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}
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}
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}
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}
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// Try to write the expanded code to disk
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if let Some(out_str) = out_dir.to_str() {
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fs::write(format!("{out_str}/rtic-expansion.rs"), ts.to_string()).ok();
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}
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// Try to write the expanded code to disk
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if let Some(out_str) = out_dir.to_str() {
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fs::write(format!("{out_str}/rtic-expansion.rs"), ts.to_string()).ok();
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}
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ts.into()
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ts.into()
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}
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}
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#[cfg(not(any(
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feature = "cortex-m-source-masking",
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feature = "cortex-m-basepri",
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feature = "test-template"
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)))]
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compile_error!("Cannot compile. No backend feature selected.");
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