93 lines
2.5 KiB
Rust
93 lines
2.5 KiB
Rust
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#![allow(unused_macros, unused_macro_rules)]
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#[path = "../debug/mod.rs"]
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pub mod debug;
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use std::str::FromStr;
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use syn::parse::Result;
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macro_rules! errorf {
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($($tt:tt)*) => {{
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use ::std::io::Write;
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let stderr = ::std::io::stderr();
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write!(stderr.lock(), $($tt)*).unwrap();
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}};
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}
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macro_rules! punctuated {
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($($e:expr,)+) => {{
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let mut seq = ::syn::punctuated::Punctuated::new();
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$(
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seq.push($e);
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)+
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seq
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}};
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($($e:expr),+) => {
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punctuated!($($e,)+)
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};
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}
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macro_rules! snapshot {
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($($args:tt)*) => {
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snapshot_impl!(() $($args)*)
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};
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}
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macro_rules! snapshot_impl {
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(($expr:ident) as $t:ty, @$snapshot:literal) => {
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let tokens = crate::macros::TryIntoTokens::try_into_tokens($expr).unwrap();
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let $expr: $t = syn::parse_quote!(#tokens);
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let debug = crate::macros::debug::Lite(&$expr);
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if !cfg!(miri) {
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#[allow(clippy::needless_raw_string_hashes)] // https://github.com/mitsuhiko/insta/issues/389
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{
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insta::assert_debug_snapshot!(debug, @$snapshot);
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}
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}
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};
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(($($expr:tt)*) as $t:ty, @$snapshot:literal) => {{
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let tokens = crate::macros::TryIntoTokens::try_into_tokens($($expr)*).unwrap();
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let syntax_tree: $t = syn::parse_quote!(#tokens);
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let debug = crate::macros::debug::Lite(&syntax_tree);
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if !cfg!(miri) {
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#[allow(clippy::needless_raw_string_hashes)]
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{
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insta::assert_debug_snapshot!(debug, @$snapshot);
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}
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}
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syntax_tree
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}};
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(($($expr:tt)*) , @$snapshot:literal) => {{
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let syntax_tree = $($expr)*;
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let debug = crate::macros::debug::Lite(&syntax_tree);
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if !cfg!(miri) {
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#[allow(clippy::needless_raw_string_hashes)]
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{
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insta::assert_debug_snapshot!(debug, @$snapshot);
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}
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}
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syntax_tree
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}};
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(($($expr:tt)*) $next:tt $($rest:tt)*) => {
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snapshot_impl!(($($expr)* $next) $($rest)*)
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};
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}
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pub trait TryIntoTokens {
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fn try_into_tokens(self) -> Result<proc_macro2::TokenStream>;
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}
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impl<'a> TryIntoTokens for &'a str {
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fn try_into_tokens(self) -> Result<proc_macro2::TokenStream> {
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let tokens = proc_macro2::TokenStream::from_str(self)?;
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Ok(tokens)
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}
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}
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impl TryIntoTokens for proc_macro2::TokenStream {
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fn try_into_tokens(self) -> Result<proc_macro2::TokenStream> {
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Ok(self)
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}
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}
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