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Diffstat (limited to 'vendor/syn/tests/common/eq.rs')
| -rw-r--r-- | vendor/syn/tests/common/eq.rs | 760 |
1 files changed, 760 insertions, 0 deletions
diff --git a/vendor/syn/tests/common/eq.rs b/vendor/syn/tests/common/eq.rs new file mode 100644 index 000000000..a6c379165 --- /dev/null +++ b/vendor/syn/tests/common/eq.rs @@ -0,0 +1,760 @@ +#![allow(unused_macro_rules)] + +extern crate rustc_ast; +extern crate rustc_data_structures; +extern crate rustc_span; + +use rustc_ast::ast::AngleBracketedArg; +use rustc_ast::ast::AngleBracketedArgs; +use rustc_ast::ast::AnonConst; +use rustc_ast::ast::Arm; +use rustc_ast::ast::AssocConstraint; +use rustc_ast::ast::AssocConstraintKind; +use rustc_ast::ast::AssocItemKind; +use rustc_ast::ast::Async; +use rustc_ast::ast::AttrId; +use rustc_ast::ast::AttrItem; +use rustc_ast::ast::AttrKind; +use rustc_ast::ast::AttrStyle; +use rustc_ast::ast::Attribute; +use rustc_ast::ast::BareFnTy; +use rustc_ast::ast::BinOpKind; +use rustc_ast::ast::BindingMode; +use rustc_ast::ast::Block; +use rustc_ast::ast::BlockCheckMode; +use rustc_ast::ast::BorrowKind; +use rustc_ast::ast::CaptureBy; +use rustc_ast::ast::Const; +use rustc_ast::ast::Crate; +use rustc_ast::ast::Defaultness; +use rustc_ast::ast::EnumDef; +use rustc_ast::ast::Expr; +use rustc_ast::ast::ExprField; +use rustc_ast::ast::ExprKind; +use rustc_ast::ast::Extern; +use rustc_ast::ast::FieldDef; +use rustc_ast::ast::FloatTy; +use rustc_ast::ast::Fn; +use rustc_ast::ast::FnDecl; +use rustc_ast::ast::FnHeader; +use rustc_ast::ast::FnRetTy; +use rustc_ast::ast::FnSig; +use rustc_ast::ast::ForeignItemKind; +use rustc_ast::ast::ForeignMod; +use rustc_ast::ast::GenericArg; +use rustc_ast::ast::GenericArgs; +use rustc_ast::ast::GenericBound; +use rustc_ast::ast::GenericParam; +use rustc_ast::ast::GenericParamKind; +use rustc_ast::ast::Generics; +use rustc_ast::ast::Impl; +use rustc_ast::ast::ImplPolarity; +use rustc_ast::ast::Inline; +use rustc_ast::ast::InlineAsm; +use rustc_ast::ast::InlineAsmOperand; +use rustc_ast::ast::InlineAsmOptions; +use rustc_ast::ast::InlineAsmRegOrRegClass; +use rustc_ast::ast::InlineAsmSym; +use rustc_ast::ast::InlineAsmTemplatePiece; +use rustc_ast::ast::IntTy; +use rustc_ast::ast::IsAuto; +use rustc_ast::ast::Item; +use rustc_ast::ast::ItemKind; +use rustc_ast::ast::Label; +use rustc_ast::ast::Lifetime; +use rustc_ast::ast::Lit; +use rustc_ast::ast::LitFloatType; +use rustc_ast::ast::LitIntType; +use rustc_ast::ast::LitKind; +use rustc_ast::ast::Local; +use rustc_ast::ast::LocalKind; +use rustc_ast::ast::MacArgs; +use rustc_ast::ast::MacArgsEq; +use rustc_ast::ast::MacCall; +use rustc_ast::ast::MacCallStmt; +use rustc_ast::ast::MacDelimiter; +use rustc_ast::ast::MacStmtStyle; +use rustc_ast::ast::MacroDef; +use rustc_ast::ast::ModKind; +use rustc_ast::ast::ModSpans; +use rustc_ast::ast::Movability; +use rustc_ast::ast::MutTy; +use rustc_ast::ast::Mutability; +use rustc_ast::ast::NodeId; +use rustc_ast::ast::Param; +use rustc_ast::ast::ParenthesizedArgs; +use rustc_ast::ast::Pat; +use rustc_ast::ast::PatField; +use rustc_ast::ast::PatKind; +use rustc_ast::ast::Path; +use rustc_ast::ast::PathSegment; +use rustc_ast::ast::PolyTraitRef; +use rustc_ast::ast::QSelf; +use rustc_ast::ast::RangeEnd; +use rustc_ast::ast::RangeLimits; +use rustc_ast::ast::RangeSyntax; +use rustc_ast::ast::Stmt; +use rustc_ast::ast::StmtKind; +use rustc_ast::ast::StrLit; +use rustc_ast::ast::StrStyle; +use rustc_ast::ast::StructExpr; +use rustc_ast::ast::StructRest; +use rustc_ast::ast::Term; +use rustc_ast::ast::Trait; +use rustc_ast::ast::TraitBoundModifier; +use rustc_ast::ast::TraitObjectSyntax; +use rustc_ast::ast::TraitRef; +use rustc_ast::ast::Ty; +use rustc_ast::ast::TyAlias; +use rustc_ast::ast::TyAliasWhereClause; +use rustc_ast::ast::TyKind; +use rustc_ast::ast::UintTy; +use rustc_ast::ast::UnOp; +use rustc_ast::ast::Unsafe; +use rustc_ast::ast::UnsafeSource; +use rustc_ast::ast::UseTree; +use rustc_ast::ast::UseTreeKind; +use rustc_ast::ast::Variant; +use rustc_ast::ast::VariantData; +use rustc_ast::ast::Visibility; +use rustc_ast::ast::VisibilityKind; +use rustc_ast::ast::WhereBoundPredicate; +use rustc_ast::ast::WhereClause; +use rustc_ast::ast::WhereEqPredicate; +use rustc_ast::ast::WherePredicate; +use rustc_ast::ast::WhereRegionPredicate; +use rustc_ast::ptr::P; +use rustc_ast::token::{self, CommentKind, Delimiter, Nonterminal, Token, TokenKind}; +use rustc_ast::tokenstream::{ + AttrAnnotatedTokenStream, AttrAnnotatedTokenTree, AttributesData, DelimSpan, LazyTokenStream, + Spacing, TokenStream, TokenTree, +}; +use rustc_data_structures::sync::Lrc; +use rustc_data_structures::thin_vec::ThinVec; +use rustc_span::source_map::Spanned; +use rustc_span::symbol::{sym, Ident}; +use rustc_span::{Span, Symbol, SyntaxContext, DUMMY_SP}; + +pub trait SpanlessEq { + fn eq(&self, other: &Self) -> bool; +} + +impl<T: ?Sized + SpanlessEq> SpanlessEq for Box<T> { + fn eq(&self, other: &Self) -> bool { + SpanlessEq::eq(&**self, &**other) + } +} + +impl<T: SpanlessEq> SpanlessEq for P<T> { + fn eq(&self, other: &Self) -> bool { + SpanlessEq::eq(&**self, &**other) + } +} + +impl<T: ?Sized + SpanlessEq> SpanlessEq for Lrc<T> { + fn eq(&self, other: &Self) -> bool { + SpanlessEq::eq(&**self, &**other) + } +} + +impl<T: SpanlessEq> SpanlessEq for Option<T> { + fn eq(&self, other: &Self) -> bool { + match (self, other) { + (None, None) => true, + (Some(this), Some(other)) => SpanlessEq::eq(this, other), + _ => false, + } + } +} + +impl<T: SpanlessEq> SpanlessEq for [T] { + fn eq(&self, other: &Self) -> bool { + self.len() == other.len() && self.iter().zip(other).all(|(a, b)| SpanlessEq::eq(a, b)) + } +} + +impl<T: SpanlessEq> SpanlessEq for Vec<T> { + fn eq(&self, other: &Self) -> bool { + <[T] as SpanlessEq>::eq(self, other) + } +} + +impl<T: SpanlessEq> SpanlessEq for ThinVec<T> { + fn eq(&self, other: &Self) -> bool { + self.len() == other.len() + && self + .iter() + .zip(other.iter()) + .all(|(a, b)| SpanlessEq::eq(a, b)) + } +} + +impl<T: SpanlessEq> SpanlessEq for Spanned<T> { + fn eq(&self, other: &Self) -> bool { + SpanlessEq::eq(&self.node, &other.node) + } +} + +impl<A: SpanlessEq, B: SpanlessEq> SpanlessEq for (A, B) { + fn eq(&self, other: &Self) -> bool { + SpanlessEq::eq(&self.0, &other.0) && SpanlessEq::eq(&self.1, &other.1) + } +} + +impl<A: SpanlessEq, B: SpanlessEq, C: SpanlessEq> SpanlessEq for (A, B, C) { + fn eq(&self, other: &Self) -> bool { + SpanlessEq::eq(&self.0, &other.0) + && SpanlessEq::eq(&self.1, &other.1) + && SpanlessEq::eq(&self.2, &other.2) + } +} + +macro_rules! spanless_eq_true { + ($name:ty) => { + impl SpanlessEq for $name { + fn eq(&self, _other: &Self) -> bool { + true + } + } + }; +} + +spanless_eq_true!(Span); +spanless_eq_true!(DelimSpan); +spanless_eq_true!(AttrId); +spanless_eq_true!(NodeId); +spanless_eq_true!(SyntaxContext); +spanless_eq_true!(Spacing); + +macro_rules! spanless_eq_partial_eq { + ($name:ty) => { + impl SpanlessEq for $name { + fn eq(&self, other: &Self) -> bool { + PartialEq::eq(self, other) + } + } + }; +} + +spanless_eq_partial_eq!(bool); +spanless_eq_partial_eq!(u8); +spanless_eq_partial_eq!(u16); +spanless_eq_partial_eq!(u128); +spanless_eq_partial_eq!(usize); +spanless_eq_partial_eq!(char); +spanless_eq_partial_eq!(String); +spanless_eq_partial_eq!(Symbol); +spanless_eq_partial_eq!(CommentKind); +spanless_eq_partial_eq!(Delimiter); +spanless_eq_partial_eq!(InlineAsmOptions); +spanless_eq_partial_eq!(token::LitKind); + +macro_rules! spanless_eq_struct { + { + $($name:ident)::+ $(<$param:ident>)? + $([$field:tt $this:ident $other:ident])* + $(![$ignore:tt])*; + } => { + impl $(<$param: SpanlessEq>)* SpanlessEq for $($name)::+ $(<$param>)* { + fn eq(&self, other: &Self) -> bool { + let $($name)::+ { $($field: $this,)* $($ignore: _,)* } = self; + let $($name)::+ { $($field: $other,)* $($ignore: _,)* } = other; + true $(&& SpanlessEq::eq($this, $other))* + } + } + }; + + { + $($name:ident)::+ $(<$param:ident>)? + $([$field:tt $this:ident $other:ident])* + $(![$ignore:tt])*; + !$next:tt + $($rest:tt)* + } => { + spanless_eq_struct! { + $($name)::+ $(<$param>)* + $([$field $this $other])* + $(![$ignore])* + ![$next]; + $($rest)* + } + }; + + { + $($name:ident)::+ $(<$param:ident>)? + $([$field:tt $this:ident $other:ident])* + $(![$ignore:tt])*; + $next:tt + $($rest:tt)* + } => { + spanless_eq_struct! { + $($name)::+ $(<$param>)* + $([$field $this $other])* + [$next this other] + $(![$ignore])*; + $($rest)* + } + }; +} + +macro_rules! spanless_eq_enum { + { + $($name:ident)::+; + $([$($variant:ident)::+; $([$field:tt $this:ident $other:ident])* $(![$ignore:tt])*])* + } => { + impl SpanlessEq for $($name)::+ { + fn eq(&self, other: &Self) -> bool { + match self { + $( + $($variant)::+ { .. } => {} + )* + } + #[allow(unreachable_patterns)] + match (self, other) { + $( + ( + $($variant)::+ { $($field: $this,)* $($ignore: _,)* }, + $($variant)::+ { $($field: $other,)* $($ignore: _,)* }, + ) => { + true $(&& SpanlessEq::eq($this, $other))* + } + )* + _ => false, + } + } + } + }; + + { + $($name:ident)::+; + $([$($variant:ident)::+; $($fields:tt)*])* + $next:ident [$([$($named:tt)*])* $(![$ignore:tt])*] (!$i:tt $($field:tt)*) + $($rest:tt)* + } => { + spanless_eq_enum! { + $($name)::+; + $([$($variant)::+; $($fields)*])* + $next [$([$($named)*])* $(![$ignore])* ![$i]] ($($field)*) + $($rest)* + } + }; + + { + $($name:ident)::+; + $([$($variant:ident)::+; $($fields:tt)*])* + $next:ident [$([$($named:tt)*])* $(![$ignore:tt])*] ($i:tt $($field:tt)*) + $($rest:tt)* + } => { + spanless_eq_enum! { + $($name)::+; + $([$($variant)::+; $($fields)*])* + $next [$([$($named)*])* [$i this other] $(![$ignore])*] ($($field)*) + $($rest)* + } + }; + + { + $($name:ident)::+; + $([$($variant:ident)::+; $($fields:tt)*])* + $next:ident [$($named:tt)*] () + $($rest:tt)* + } => { + spanless_eq_enum! { + $($name)::+; + $([$($variant)::+; $($fields)*])* + [$($name)::+::$next; $($named)*] + $($rest)* + } + }; + + { + $($name:ident)::+; + $([$($variant:ident)::+; $($fields:tt)*])* + $next:ident ($($field:tt)*) + $($rest:tt)* + } => { + spanless_eq_enum! { + $($name)::+; + $([$($variant)::+; $($fields)*])* + $next [] ($($field)*) + $($rest)* + } + }; + + { + $($name:ident)::+; + $([$($variant:ident)::+; $($fields:tt)*])* + $next:ident + $($rest:tt)* + } => { + spanless_eq_enum! { + $($name)::+; + $([$($variant)::+; $($fields)*])* + [$($name)::+::$next;] + $($rest)* + } + }; +} + +spanless_eq_struct!(AngleBracketedArgs; span args); +spanless_eq_struct!(AnonConst; id value); +spanless_eq_struct!(Arm; attrs pat guard body span id is_placeholder); +spanless_eq_struct!(AssocConstraint; id ident gen_args kind span); +spanless_eq_struct!(AttrAnnotatedTokenStream; 0); +spanless_eq_struct!(AttrItem; path args tokens); +spanless_eq_struct!(Attribute; kind id style span); +spanless_eq_struct!(AttributesData; attrs tokens); +spanless_eq_struct!(BareFnTy; unsafety ext generic_params decl decl_span); +spanless_eq_struct!(Block; stmts id rules span tokens could_be_bare_literal); +spanless_eq_struct!(Crate; attrs items spans id is_placeholder); +spanless_eq_struct!(EnumDef; variants); +spanless_eq_struct!(Expr; id kind span attrs !tokens); +spanless_eq_struct!(ExprField; attrs id span ident expr is_shorthand is_placeholder); +spanless_eq_struct!(FieldDef; attrs id span vis ident ty is_placeholder); +spanless_eq_struct!(FnDecl; inputs output); +spanless_eq_struct!(FnHeader; constness asyncness unsafety ext); +spanless_eq_struct!(Fn; defaultness generics sig body); +spanless_eq_struct!(FnSig; header decl span); +spanless_eq_struct!(ForeignMod; unsafety abi items); +spanless_eq_struct!(GenericParam; id ident attrs bounds is_placeholder kind !colon_span); +spanless_eq_struct!(Generics; params where_clause span); +spanless_eq_struct!(Impl; defaultness unsafety generics constness polarity of_trait self_ty items); +spanless_eq_struct!(InlineAsm; template template_strs operands clobber_abis options line_spans); +spanless_eq_struct!(InlineAsmSym; id qself path); +spanless_eq_struct!(Item<K>; attrs id span vis ident kind !tokens); +spanless_eq_struct!(Label; ident); +spanless_eq_struct!(Lifetime; id ident); +spanless_eq_struct!(Lit; token kind span); +spanless_eq_struct!(Local; pat ty kind id span attrs !tokens); +spanless_eq_struct!(MacCall; path args prior_type_ascription); +spanless_eq_struct!(MacCallStmt; mac style attrs tokens); +spanless_eq_struct!(MacroDef; body macro_rules); +spanless_eq_struct!(ModSpans; !inner_span !inject_use_span); +spanless_eq_struct!(MutTy; ty mutbl); +spanless_eq_struct!(ParenthesizedArgs; span inputs inputs_span output); +spanless_eq_struct!(Pat; id kind span tokens); +spanless_eq_struct!(PatField; ident pat is_shorthand attrs id span is_placeholder); +spanless_eq_struct!(Path; span segments tokens); +spanless_eq_struct!(PathSegment; ident id args); +spanless_eq_struct!(PolyTraitRef; bound_generic_params trait_ref span); +spanless_eq_struct!(QSelf; ty path_span position); +spanless_eq_struct!(Stmt; id kind span); +spanless_eq_struct!(StrLit; style symbol suffix span symbol_unescaped); +spanless_eq_struct!(StructExpr; qself path fields rest); +spanless_eq_struct!(Token; kind span); +spanless_eq_struct!(Trait; unsafety is_auto generics bounds items); +spanless_eq_struct!(TraitRef; path ref_id); +spanless_eq_struct!(Ty; id kind span tokens); +spanless_eq_struct!(TyAlias; defaultness generics where_clauses !where_predicates_split bounds ty); +spanless_eq_struct!(TyAliasWhereClause; !0 1); +spanless_eq_struct!(UseTree; prefix kind span); +spanless_eq_struct!(Variant; attrs id span !vis ident data disr_expr is_placeholder); +spanless_eq_struct!(Visibility; kind span tokens); +spanless_eq_struct!(WhereBoundPredicate; span bound_generic_params bounded_ty bounds); +spanless_eq_struct!(WhereClause; has_where_token predicates span); +spanless_eq_struct!(WhereEqPredicate; id span lhs_ty rhs_ty); +spanless_eq_struct!(WhereRegionPredicate; span lifetime bounds); +spanless_eq_struct!(token::Lit; kind symbol suffix); +spanless_eq_enum!(AngleBracketedArg; Arg(0) Constraint(0)); +spanless_eq_enum!(AssocItemKind; Const(0 1 2) Fn(0) TyAlias(0) MacCall(0)); +spanless_eq_enum!(AssocConstraintKind; Equality(term) Bound(bounds)); +spanless_eq_enum!(Async; Yes(span closure_id return_impl_trait_id) No); +spanless_eq_enum!(AttrAnnotatedTokenTree; Token(0) Delimited(0 1 2) Attributes(0)); +spanless_eq_enum!(AttrStyle; Outer Inner); +spanless_eq_enum!(BinOpKind; Add Sub Mul Div Rem And Or BitXor BitAnd BitOr Shl Shr Eq Lt Le Ne Ge Gt); +spanless_eq_enum!(BindingMode; ByRef(0) ByValue(0)); +spanless_eq_enum!(BlockCheckMode; Default Unsafe(0)); +spanless_eq_enum!(BorrowKind; Ref Raw); +spanless_eq_enum!(CaptureBy; Value Ref); +spanless_eq_enum!(Const; Yes(0) No); +spanless_eq_enum!(Defaultness; Default(0) Final); +spanless_eq_enum!(Extern; None Implicit Explicit(0)); +spanless_eq_enum!(FloatTy; F32 F64); +spanless_eq_enum!(FnRetTy; Default(0) Ty(0)); +spanless_eq_enum!(ForeignItemKind; Static(0 1 2) Fn(0) TyAlias(0) MacCall(0)); +spanless_eq_enum!(GenericArg; Lifetime(0) Type(0) Const(0)); +spanless_eq_enum!(GenericArgs; AngleBracketed(0) Parenthesized(0)); +spanless_eq_enum!(GenericBound; Trait(0 1) Outlives(0)); +spanless_eq_enum!(GenericParamKind; Lifetime Type(default) Const(ty kw_span default)); +spanless_eq_enum!(ImplPolarity; Positive Negative(0)); +spanless_eq_enum!(Inline; Yes No); +spanless_eq_enum!(InlineAsmRegOrRegClass; Reg(0) RegClass(0)); +spanless_eq_enum!(InlineAsmTemplatePiece; String(0) Placeholder(operand_idx modifier span)); +spanless_eq_enum!(IntTy; Isize I8 I16 I32 I64 I128); +spanless_eq_enum!(IsAuto; Yes No); +spanless_eq_enum!(LitFloatType; Suffixed(0) Unsuffixed); +spanless_eq_enum!(LitIntType; Signed(0) Unsigned(0) Unsuffixed); +spanless_eq_enum!(LocalKind; Decl Init(0) InitElse(0 1)); +spanless_eq_enum!(MacArgs; Empty Delimited(0 1 2) Eq(0 1)); +spanless_eq_enum!(MacArgsEq; Ast(0) Hir(0)); +spanless_eq_enum!(MacDelimiter; Parenthesis Bracket Brace); +spanless_eq_enum!(MacStmtStyle; Semicolon Braces NoBraces); +spanless_eq_enum!(ModKind; Loaded(0 1 2) Unloaded); +spanless_eq_enum!(Movability; Static Movable); +spanless_eq_enum!(Mutability; Mut Not); +spanless_eq_enum!(RangeEnd; Included(0) Excluded); +spanless_eq_enum!(RangeLimits; HalfOpen Closed); +spanless_eq_enum!(StmtKind; Local(0) Item(0) Expr(0) Semi(0) Empty MacCall(0)); +spanless_eq_enum!(StrStyle; Cooked Raw(0)); +spanless_eq_enum!(StructRest; Base(0) Rest(0) None); +spanless_eq_enum!(Term; Ty(0) Const(0)); +spanless_eq_enum!(TokenTree; Token(0) Delimited(0 1 2)); +spanless_eq_enum!(TraitBoundModifier; None Maybe MaybeConst MaybeConstMaybe); +spanless_eq_enum!(TraitObjectSyntax; Dyn None); +spanless_eq_enum!(UintTy; Usize U8 U16 U32 U64 U128); +spanless_eq_enum!(UnOp; Deref Not Neg); +spanless_eq_enum!(Unsafe; Yes(0) No); +spanless_eq_enum!(UnsafeSource; CompilerGenerated UserProvided); +spanless_eq_enum!(UseTreeKind; Simple(0 1 2) Nested(0) Glob); +spanless_eq_enum!(VariantData; Struct(0 1) Tuple(0 1) Unit(0)); +spanless_eq_enum!(VisibilityKind; Public Restricted(path id) Inherited); +spanless_eq_enum!(WherePredicate; BoundPredicate(0) RegionPredicate(0) EqPredicate(0)); +spanless_eq_enum!(ExprKind; Box(0) Array(0) ConstBlock(0) Call(0 1) + MethodCall(0 1 2) Tup(0) Binary(0 1 2) Unary(0 1) Lit(0) Cast(0 1) Type(0 1) + Let(0 1 2) If(0 1 2) While(0 1 2) ForLoop(0 1 2 3) Loop(0 1) Match(0 1) + Closure(0 1 2 3 4 5) Block(0 1) Async(0 1 2) Await(0) TryBlock(0) + Assign(0 1 2) AssignOp(0 1 2) Field(0 1) Index(0 1) Underscore Range(0 1 2) + Path(0 1) AddrOf(0 1 2) Break(0 1) Continue(0) Ret(0) InlineAsm(0) + MacCall(0) Struct(0) Repeat(0 1) Paren(0) Try(0) Yield(0) Yeet(0) Err); +spanless_eq_enum!(InlineAsmOperand; In(reg expr) Out(reg late expr) + InOut(reg late expr) SplitInOut(reg late in_expr out_expr) Const(anon_const) + Sym(sym)); +spanless_eq_enum!(ItemKind; ExternCrate(0) Use(0) Static(0 1 2) Const(0 1 2) + Fn(0) Mod(0 1) ForeignMod(0) GlobalAsm(0) TyAlias(0) Enum(0 1) Struct(0 1) + Union(0 1) Trait(0) TraitAlias(0 1) Impl(0) MacCall(0) MacroDef(0)); +spanless_eq_enum!(LitKind; Str(0 1) ByteStr(0) Byte(0) Char(0) Int(0 1) + Float(0 1) Bool(0) Err(0)); +spanless_eq_enum!(PatKind; Wild Ident(0 1 2) Struct(0 1 2 3) TupleStruct(0 1 2) + Or(0) Path(0 1) Tuple(0) Box(0) Ref(0 1) Lit(0) Range(0 1 2) Slice(0) Rest + Paren(0) MacCall(0)); +spanless_eq_enum!(TyKind; Slice(0) Array(0 1) Ptr(0) Rptr(0 1) BareFn(0) Never + Tup(0) Path(0 1) TraitObject(0 1) ImplTrait(0 1) Paren(0) Typeof(0) Infer + ImplicitSelf MacCall(0) Err CVarArgs); + +impl SpanlessEq for Ident { + fn eq(&self, other: &Self) -> bool { + self.as_str() == other.as_str() + } +} + +impl SpanlessEq for RangeSyntax { + fn eq(&self, _other: &Self) -> bool { + match self { + RangeSyntax::DotDotDot | RangeSyntax::DotDotEq => true, + } + } +} + +impl SpanlessEq for Param { + fn eq(&self, other: &Self) -> bool { + let Param { + attrs, + ty, + pat, + id, + span: _, + is_placeholder, + } = self; + let Param { + attrs: attrs2, + ty: ty2, + pat: pat2, + id: id2, + span: _, + is_placeholder: is_placeholder2, + } = other; + SpanlessEq::eq(id, id2) + && SpanlessEq::eq(is_placeholder, is_placeholder2) + && (matches!(ty.kind, TyKind::Err) + || matches!(ty2.kind, TyKind::Err) + || SpanlessEq::eq(attrs, attrs2) + && SpanlessEq::eq(ty, ty2) + && SpanlessEq::eq(pat, pat2)) + } +} + +impl SpanlessEq for TokenKind { + fn eq(&self, other: &Self) -> bool { + match (self, other) { + (TokenKind::Literal(this), TokenKind::Literal(other)) => SpanlessEq::eq(this, other), + (TokenKind::DotDotEq, _) | (TokenKind::DotDotDot, _) => match other { + TokenKind::DotDotEq | TokenKind::DotDotDot => true, + _ => false, + }, + (TokenKind::Interpolated(this), TokenKind::Interpolated(other)) => { + match (this.as_ref(), other.as_ref()) { + (Nonterminal::NtExpr(this), Nonterminal::NtExpr(other)) => { + SpanlessEq::eq(this, other) + } + _ => this == other, + } + } + _ => self == other, + } + } +} + +impl SpanlessEq for TokenStream { + fn eq(&self, other: &Self) -> bool { + let mut this_trees = self.trees(); + let mut other_trees = other.trees(); + loop { + let this = match this_trees.next() { + None => return other_trees.next().is_none(), + Some(tree) => tree, + }; + let other = match other_trees.next() { + None => return false, + Some(tree) => tree, + }; + if SpanlessEq::eq(this, other) { + continue; + } + if let (TokenTree::Token(this), TokenTree::Token(other)) = (this, other) { + if match (&this.kind, &other.kind) { + (TokenKind::Literal(this), TokenKind::Literal(other)) => { + SpanlessEq::eq(this, other) + } + (TokenKind::DocComment(_kind, style, symbol), TokenKind::Pound) => { + doc_comment(*style, *symbol, &mut other_trees) + } + (TokenKind::Pound, TokenKind::DocComment(_kind, style, symbol)) => { + doc_comment(*style, *symbol, &mut this_trees) + } + _ => false, + } { + continue; + } + } + return false; + } + } +} + +fn doc_comment<'a>( + style: AttrStyle, + unescaped: Symbol, + trees: &mut impl Iterator<Item = &'a TokenTree>, +) -> bool { + if match style { + AttrStyle::Outer => false, + AttrStyle::Inner => true, + } { + match trees.next() { + Some(TokenTree::Token(Token { + kind: TokenKind::Not, + span: _, + })) => {} + _ => return false, + } + } + let stream = match trees.next() { + Some(TokenTree::Delimited(_span, Delimiter::Bracket, stream)) => stream, + _ => return false, + }; + let mut trees = stream.trees(); + match trees.next() { + Some(TokenTree::Token(Token { + kind: TokenKind::Ident(symbol, false), + span: _, + })) if *symbol == sym::doc => {} + _ => return false, + } + match trees.next() { + Some(TokenTree::Token(Token { + kind: TokenKind::Eq, + span: _, + })) => {} + _ => return false, + } + match trees.next() { + Some(TokenTree::Token(token)) => { + is_escaped_literal_token(token, unescaped) && trees.next().is_none() + } + _ => false, + } +} + +fn is_escaped_literal_token(token: &Token, unescaped: Symbol) -> bool { + match token { + Token { + kind: TokenKind::Literal(lit), + span: _, + } => match Lit::from_lit_token(*lit, DUMMY_SP) { + Ok(lit) => is_escaped_literal(&lit, unescaped), + Err(_) => false, + }, + Token { + kind: TokenKind::Interpolated(nonterminal), + span: _, + } => match nonterminal.as_ref() { + Nonterminal::NtExpr(expr) => match &expr.kind { + ExprKind::Lit(lit) => is_escaped_literal(lit, unescaped), + _ => false, + }, + _ => false, + }, + _ => false, + } +} + +fn is_escaped_literal_macro_arg(arg: &MacArgsEq, unescaped: Symbol) -> bool { + match arg { + MacArgsEq::Ast(expr) => match &expr.kind { + ExprKind::Lit(lit) => is_escaped_literal(lit, unescaped), + _ => false, + }, + MacArgsEq::Hir(lit) => is_escaped_literal(lit, unescaped), + } +} + +fn is_escaped_literal(lit: &Lit, unescaped: Symbol) -> bool { + match lit { + Lit { + token: + token::Lit { + kind: token::LitKind::Str, + symbol: _, + suffix: None, + }, + kind: LitKind::Str(symbol, StrStyle::Cooked), + span: _, + } => symbol.as_str().replace('\r', "") == unescaped.as_str().replace('\r', ""), + _ => false, + } +} + +impl SpanlessEq for LazyTokenStream { + fn eq(&self, other: &Self) -> bool { + let this = self.create_token_stream(); + let other = other.create_token_stream(); + SpanlessEq::eq(&this, &other) + } +} + +impl SpanlessEq for AttrKind { + fn eq(&self, other: &Self) -> bool { + match (self, other) { + (AttrKind::Normal(item, tokens), AttrKind::Normal(item2, tokens2)) => { + SpanlessEq::eq(item, item2) && SpanlessEq::eq(tokens, tokens2) + } + (AttrKind::DocComment(kind, symbol), AttrKind::DocComment(kind2, symbol2)) => { + SpanlessEq::eq(kind, kind2) && SpanlessEq::eq(symbol, symbol2) + } + (AttrKind::DocComment(kind, unescaped), AttrKind::Normal(item2, _tokens)) => { + match kind { + CommentKind::Line | CommentKind::Block => {} + } + let path = Path::from_ident(Ident::with_dummy_span(sym::doc)); + SpanlessEq::eq(&path, &item2.path) + && match &item2.args { + MacArgs::Empty | MacArgs::Delimited(..) => false, + MacArgs::Eq(_span, token) => { + is_escaped_literal_macro_arg(token, *unescaped) + } + } + } + (AttrKind::Normal(..), AttrKind::DocComment(..)) => SpanlessEq::eq(other, self), + } + } +} |