Add a benchmark for exhaustive_patterns

Author: Nadrieril

collector/benchmarks/match-stress-exhaustive_patterns/.gitignore

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+target
+Cargo.lock

collector/benchmarks/match-stress-exhaustive_patterns/Cargo.toml

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+[package]
+name = "syn"
+version = "0.0.0"
+
+[workspace]

collector/benchmarks/match-stress-exhaustive_patterns/perf-config.json

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+{
+    "supports_stable": false,
+    "touch_file": "src/lib.rs"
+}

collector/benchmarks/match-stress-exhaustive_patterns/src/attr.rs

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+use super::*;
+use delimited::Delimited;
+
+ast_struct! {
+    /// Doc-comments are promoted to attributes that have `is_sugared_doc` = true
+    pub struct Attribute {
+        pub style: AttrStyle,
+        pub pound_token: tokens::Pound,
+        pub bracket_token: tokens::Bracket,
+
+        /// The path of the attribute.
+        ///
+        /// E.g. `derive` in `#[derive(Copy)]`
+        /// E.g. `crate::precondition` in `#[crate::precondition x < 5]`
+        pub path: Path,
+
+        /// Any tokens after the path.
+        ///
+        /// E.g. `( Copy )` in `#[derive(Copy)]`
+        /// E.g. `x < 5` in `#[crate::precondition x < 5]`
+        pub tts: Vec<TokenTree>,
+
+        pub is_sugared_doc: bool,
+    }
+}
+
+ast_enum! {
+    /// Distinguishes between Attributes that decorate items and Attributes that
+    /// are contained as statements within items. These two cases need to be
+    /// distinguished for pretty-printing.
+    pub enum AttrStyle {
+        /// Attribute of the form `#[...]`.
+        Outer,
+
+        /// Attribute of the form `#![...]`.
+        Inner(tokens::Bang),
+    }
+}
+
+ast_enum_of_structs! {
+    /// A compile-time attribute item.
+    ///
+    /// E.g. `#[test]`, `#[derive(..)]` or `#[feature = "foo"]`
+    pub enum MetaItem {
+        /// Term meta item.
+        ///
+        /// E.g. `test` as in `#[test]`
+        pub Term(Ident),
+
+        /// List meta item.
+        ///
+        /// E.g. `derive(..)` as in `#[derive(..)]`
+        pub List(MetaItemList {
+            /// Name of this attribute.
+            ///
+            /// E.g. `derive` in `#[derive(..)]`
+            pub ident: Ident,
+
+            pub paren_token: tokens::Paren,
+
+            /// Arguments to this attribute
+            ///
+            /// E.g. `..` in `#[derive(..)]`
+            pub nested: Delimited<NestedMetaItem, tokens::Comma>,
+        }),
+
+        /// Name-value meta item.
+        ///
+        /// E.g. `feature = "foo"` as in `#[feature = "foo"]`
+        pub NameValue(MetaNameValue {
+            /// Name of this attribute.
+            ///
+            /// E.g. `feature` in `#[feature = "foo"]`
+            pub ident: Ident,
+
+            pub eq_token: tokens::Eq,
+
+            /// Arguments to this attribute
+            ///
+            /// E.g. `"foo"` in `#[feature = "foo"]`
+            pub lit: Lit,
+        }),
+    }
+}
+
+ast_enum_of_structs! {
+    /// Possible values inside of compile-time attribute lists.
+    ///
+    /// E.g. the '..' in `#[name(..)]`.
+    pub enum NestedMetaItem {
+        /// A full `MetaItem`.
+        ///
+        /// E.g. `Copy` in `#[derive(Copy)]` would be a `MetaItem::Term(Ident::from("Copy"))`.
+        pub MetaItem(MetaItem),
+
+        /// A Rust literal.
+        ///
+        /// E.g. `"name"` in `#[rename("name")]`.
+        pub Literal(Lit),
+    }
+}

collector/benchmarks/match-stress-exhaustive_patterns/src/data.rs

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+use super::*;
+use delimited::Delimited;
+
+ast_struct! {
+    /// An enum variant.
+    pub struct Variant {
+        /// Name of the variant.
+        pub ident: Ident,
+
+        /// Attributes tagged on the variant.
+        pub attrs: Vec<Attribute>,
+
+        /// Type of variant.
+        pub data: VariantData,
+
+        /// Explicit discriminant, e.g. `Foo = 1`
+        pub discriminant: Option<Expr>,
+
+        pub eq_token: Option<tokens::Eq>,
+    }
+}
+
+ast_enum! {
+    /// Data stored within an enum variant or struct.
+    pub enum VariantData {
+        /// Struct variant, e.g. `Point { x: f64, y: f64 }`.
+        Struct(Delimited<Field, tokens::Comma>, tokens::Brace),
+
+        /// Tuple variant, e.g. `Some(T)`.
+        Tuple(Delimited<Field, tokens::Comma>, tokens::Paren),
+
+        /// Unit variant, e.g. `None`.
+        Unit,
+    }
+}
+
+ast_struct! {
+    /// A field of a struct or enum variant.
+    pub struct Field {
+        /// Name of the field, if any.
+        ///
+        /// Fields of tuple structs have no names.
+        pub ident: Option<Ident>,
+
+        /// Visibility of the field.
+        pub vis: Visibility,
+
+        /// Attributes tagged on the field.
+        pub attrs: Vec<Attribute>,
+
+        /// Type of the field.
+        pub ty: Ty,
+
+        pub colon_token: Option<tokens::Colon>,
+    }
+}
+
+ast_enum_of_structs! {
+    /// Visibility level of an item.
+    pub enum Visibility {
+        /// Public, i.e. `pub`.
+        pub Public(VisPublic {
+            pub pub_token: tokens::Pub,
+        }),
+
+        /// Crate-visible, i.e. `pub(crate)`.
+        pub Crate(VisCrate {
+            pub pub_token: tokens::Pub,
+            pub paren_token: tokens::Paren,
+            pub crate_token: tokens::Crate,
+        }),
+
+        /// Restricted, e.g. `pub(self)` or `pub(super)` or `pub(in some::module)`.
+        pub Restricted(VisRestricted {
+            pub pub_token: tokens::Pub,
+            pub paren_token: tokens::Paren,
+            pub in_token: Option<tokens::In>,
+            pub path: Box<Path>,
+        }),
+
+        /// Inherited, i.e. private.
+        pub Inherited(VisInherited {}),
+    }
+}

collector/benchmarks/match-stress-exhaustive_patterns/src/derive.rs

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+use super::*;
+use delimited::Delimited;
+
+ast_struct! {
+    /// Struct or enum sent to a `proc_macro_derive` macro.
+    pub struct DeriveInput {
+        /// Name of the struct or enum.
+        pub ident: Ident,
+
+        /// Visibility of the struct or enum.
+        pub vis: Visibility,
+
+        /// Attributes tagged on the whole struct or enum.
+        pub attrs: Vec<Attribute>,
+
+        /// Generics required to complete the definition.
+        pub generics: Generics,
+
+        /// Data within the struct or enum.
+        pub body: Body,
+    }
+}
+
+ast_enum_of_structs! {
+    /// Body of a derived struct or enum.
+    pub enum Body {
+        /// It's an enum.
+        pub Enum(BodyEnum {
+            pub enum_token: tokens::Enum,
+            pub brace_token: tokens::Brace,
+            pub variants: Delimited<Variant, tokens::Comma>,
+        }),
+
+        /// It's a struct.
+        pub Struct(BodyStruct {
+            pub data: VariantData,
+            pub struct_token: tokens::Struct,
+            pub semi_token: Option<tokens::Semi>,
+        }),
+    }
+}