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5b0a775c12
Currently the macro always provides `CFn`, `RustFn`, `RustArgs`, etc. Change this so that: 1. This information must be explicily requested in the invocation. 2. There is a new `FTy` field available that emits a single float type, rather than a tuple or signature. Additionally, add two new macros that create enums representing function names.
105 lines
2.5 KiB
Rust
105 lines
2.5 KiB
Rust
// `STATUS_DLL_NOT_FOUND` on i686 MinGW, not worth looking into.
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#![cfg(not(all(target_arch = "x86", target_os = "windows", target_env = "gnu")))]
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macro_rules! basic {
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(
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fn_name: $fn_name:ident,
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FTy: $FTy:ty,
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CFn: $CFn:ty,
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CArgs: $CArgs:ty,
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CRet: $CRet:ty,
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RustFn: $RustFn:ty,
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RustArgs: $RustArgs:ty,
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RustRet: $RustRet:ty,
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attrs: [$($meta:meta)*]
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extra: [$($extra_tt:tt)*],
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fn_extra: $fn_extra:expr,
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) => {
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$(#[$meta])*
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mod $fn_name {
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#[allow(unused)]
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type FTy= $FTy;
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#[allow(unused)]
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type CFnTy<'a> = $CFn;
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#[allow(unused)]
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type RustFnTy = $RustFn;
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#[allow(unused)]
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type RustArgsTy = $RustArgs;
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#[allow(unused)]
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type RustRetTy = $RustRet;
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#[allow(unused)]
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const A: &[&str] = &[$($extra_tt)*];
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#[allow(unused)]
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fn foo(a: f32) -> f32 {
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$fn_extra(a)
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}
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}
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};
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}
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mod test_basic {
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libm_macros::for_each_function! {
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callback: basic,
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emit_types: all,
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skip: [sin, cos],
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attributes: [
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// just some random attributes
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#[allow(clippy::pedantic)]
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#[allow(dead_code)]
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[sinf, cosf]
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],
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extra: ["foo", "bar"],
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fn_extra: match MACRO_FN_NAME {
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sin => |x| x + 2.0,
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cos | cosf => |x: f32| x.MACRO_FN_NAME_NORMALIZED(),
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_ => |_x| 100.0
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}
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}
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}
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macro_rules! basic_no_extra {
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(
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fn_name: $fn_name:ident,
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) => {
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mod $fn_name {}
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};
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}
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mod test_basic_no_extra {
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// Test with no extra, no skip, and no attributes
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libm_macros::for_each_function! {
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callback: basic_no_extra,
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}
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}
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mod test_only {
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// Test that only works
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libm_macros::for_each_function! {
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callback: basic_no_extra,
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only: [sin, sinf],
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}
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}
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macro_rules! specified_types {
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(
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fn_name: $fn_name:ident,
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RustFn: $RustFn:ty,
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RustArgs: $RustArgs:ty,
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) => {
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mod $fn_name {
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#[allow(unused)]
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type RustFnTy = $RustFn;
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#[allow(unused)]
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type RustArgsTy = $RustArgs;
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}
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};
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}
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mod test_emit_types {
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// Test that we can specify a couple types to emit
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libm_macros::for_each_function! {
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callback: specified_types,
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emit_types: [RustFn, RustArgs],
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}
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}
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