82 lines
1.9 KiB
Rust
82 lines
1.9 KiB
Rust
#[path = "../debug/mod.rs"]
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pub mod debug;
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use syn::parse::{Parse, Result};
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#[macro_export]
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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_export]
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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_export]
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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_export]
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macro_rules! snapshot_impl {
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(($expr:ident) as $t:ty, @$snapshot:literal) => {
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let $expr = crate::macros::Tokens::parse::<$t>($expr).unwrap();
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let debug = crate::macros::debug::Lite(&$expr);
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if !cfg!(miri) {
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insta::assert_debug_snapshot!(debug, @$snapshot);
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}
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};
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(($($expr:tt)*) as $t:ty, @$snapshot:literal) => {{
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let syntax_tree = crate::macros::Tokens::parse::<$t>($($expr)*).unwrap();
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let debug = crate::macros::debug::Lite(&syntax_tree);
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if !cfg!(miri) {
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insta::assert_debug_snapshot!(debug, @$snapshot);
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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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insta::assert_debug_snapshot!(debug, @$snapshot);
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}
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syntax_tree
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}};
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(($($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 Tokens {
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fn parse<T: Parse>(self) -> Result<T>;
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}
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impl<'a> Tokens for &'a str {
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fn parse<T: Parse>(self) -> Result<T> {
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syn::parse_str(self)
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}
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}
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impl Tokens for proc_macro2::TokenStream {
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fn parse<T: Parse>(self) -> Result<T> {
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syn::parse2(self)
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}
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}
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