//! Defines input for code generation process. pub(crate) struct KindsSrc<'a> { pub(crate) punct: &'a [(&'a str, &'a str)], pub(crate) keywords: &'a [&'a str], pub(crate) contextual_keywords: &'a [&'a str], pub(crate) literals: &'a [&'a str], pub(crate) tokens: &'a [&'a str], pub(crate) nodes: &'a [&'a str], } pub(crate) const KINDS_SRC: KindsSrc = KindsSrc { punct: &[ (";", "SEMI"), (",", "COMMA"), ("(", "L_PAREN"), (")", "R_PAREN"), ("{", "L_CURLY"), ("}", "R_CURLY"), ("[", "L_BRACK"), ("]", "R_BRACK"), ("<", "L_ANGLE"), (">", "R_ANGLE"), ("@", "AT"), ("#", "POUND"), ("~", "TILDE"), ("?", "QUESTION"), ("$", "DOLLAR"), ("&", "AMP"), ("|", "PIPE"), ("+", "PLUS"), ("*", "STAR"), ("/", "SLASH"), ("^", "CARET"), ("%", "PERCENT"), ("_", "UNDERSCORE"), (".", "DOT"), ("..", "DOTDOT"), ("...", "DOTDOTDOT"), ("..=", "DOTDOTEQ"), (":", "COLON"), ("::", "COLONCOLON"), ("=", "EQ"), ("==", "EQEQ"), ("=>", "FAT_ARROW"), ("!", "EXCL"), ("!=", "NEQ"), ("-", "MINUS"), ("->", "THIN_ARROW"), ("<=", "LTEQ"), (">=", "GTEQ"), ("+=", "PLUSEQ"), ("-=", "MINUSEQ"), ("|=", "PIPEEQ"), ("&=", "AMPEQ"), ("^=", "CARETEQ"), ("/=", "SLASHEQ"), ("*=", "STAREQ"), ("%=", "PERCENTEQ"), ("&&", "AMPAMP"), ("||", "PIPEPIPE"), ("<<", "SHL"), (">>", "SHR"), ("<<=", "SHLEQ"), (">>=", "SHREQ"), ], keywords: &[ "as", "async", "await", "box", "break", "const", "continue", "crate", "dyn", "else", "enum", "extern", "false", "fn", "for", "if", "impl", "in", "let", "loop", "macro", "match", "mod", "move", "mut", "pub", "ref", "return", "self", "static", "struct", "super", "trait", "true", "try", "type", "unsafe", "use", "where", "while", ], contextual_keywords: &["auto", "default", "existential", "union", "raw"], literals: &[ "INT_NUMBER", "FLOAT_NUMBER", "CHAR", "BYTE", "STRING", "RAW_STRING", "BYTE_STRING", "RAW_BYTE_STRING", ], tokens: &[ "ERROR", "IDENT", "WHITESPACE", "LIFETIME", "COMMENT", "SHEBANG", "L_DOLLAR", "R_DOLLAR", ], nodes: &[ "SOURCE_FILE", "STRUCT_DEF", "UNION_DEF", "ENUM_DEF", "FN_DEF", "RET_TYPE", "EXTERN_CRATE_ITEM", "MODULE", "USE_ITEM", "STATIC_DEF", "CONST_DEF", "TRAIT_DEF", "IMPL_DEF", "TYPE_ALIAS_DEF", "MACRO_CALL", "TOKEN_TREE", "MACRO_DEF", "PAREN_TYPE", "TUPLE_TYPE", "NEVER_TYPE", "PATH_TYPE", "POINTER_TYPE", "ARRAY_TYPE", "SLICE_TYPE", "REFERENCE_TYPE", "PLACEHOLDER_TYPE", "FN_POINTER_TYPE", "FOR_TYPE", "IMPL_TRAIT_TYPE", "DYN_TRAIT_TYPE", "OR_PAT", "PAREN_PAT", "REF_PAT", "BOX_PAT", "BIND_PAT", "PLACEHOLDER_PAT", "DOT_DOT_PAT", "PATH_PAT", "RECORD_PAT", "RECORD_FIELD_PAT_LIST", "RECORD_FIELD_PAT", "TUPLE_STRUCT_PAT", "TUPLE_PAT", "SLICE_PAT", "RANGE_PAT", "LITERAL_PAT", "MACRO_PAT", // atoms "TUPLE_EXPR", "ARRAY_EXPR", "PAREN_EXPR", "PATH_EXPR", "LAMBDA_EXPR", "IF_EXPR", "WHILE_EXPR", "CONDITION", "LOOP_EXPR", "FOR_EXPR", "CONTINUE_EXPR", "BREAK_EXPR", "LABEL", "BLOCK_EXPR", "RETURN_EXPR", "MATCH_EXPR", "MATCH_ARM_LIST", "MATCH_ARM", "MATCH_GUARD", "RECORD_LIT", "RECORD_FIELD_LIST", "RECORD_FIELD", "TRY_BLOCK_EXPR", "BOX_EXPR", // postfix "CALL_EXPR", "INDEX_EXPR", "METHOD_CALL_EXPR", "FIELD_EXPR", "AWAIT_EXPR", "TRY_EXPR", "CAST_EXPR", // unary "REF_EXPR", "PREFIX_EXPR", "RANGE_EXPR", // just weird "BIN_EXPR", "BLOCK", "EXTERN_BLOCK", "EXTERN_ITEM_LIST", "ENUM_VARIANT", "RECORD_FIELD_DEF_LIST", "RECORD_FIELD_DEF", "TUPLE_FIELD_DEF_LIST", "TUPLE_FIELD_DEF", "ENUM_VARIANT_LIST", "ITEM_LIST", "ATTR", "META_ITEM", // not an item actually "USE_TREE", "USE_TREE_LIST", "PATH", "PATH_SEGMENT", "LITERAL", "ALIAS", "VISIBILITY", "WHERE_CLAUSE", "WHERE_PRED", "ABI", "NAME", "NAME_REF", "LET_STMT", "EXPR_STMT", "TYPE_PARAM_LIST", "LIFETIME_PARAM", "TYPE_PARAM", "CONST_PARAM", "TYPE_ARG_LIST", "LIFETIME_ARG", "TYPE_ARG", "ASSOC_TYPE_ARG", "CONST_ARG", "PARAM_LIST", "PARAM", "SELF_PARAM", "ARG_LIST", "TYPE_BOUND", "TYPE_BOUND_LIST", // macro related "MACRO_ITEMS", "MACRO_STMTS", ], }; pub(crate) struct AstSrc<'a> { pub(crate) nodes: &'a [AstNodeSrc<'a>], pub(crate) enums: &'a [AstEnumSrc<'a>], pub(crate) token_enums: &'a [AstEnumSrc<'a>], } pub(crate) struct AstNodeSrc<'a> { pub(crate) name: &'a str, pub(crate) traits: &'a [&'a str], pub(crate) fields: &'a [(&'a str, FieldSrc<'a>)], } pub(crate) enum FieldSrc<'a> { Shorthand, Optional(&'a str), Many(&'a str), } pub(crate) struct AstEnumSrc<'a> { pub(crate) name: &'a str, pub(crate) traits: &'a [&'a str], pub(crate) variants: &'a [&'a str], } macro_rules! ast_nodes { ($( struct $name:ident$(: $($trait:ident),*)? { $($field_name:ident $(: $ty:tt)?),*$(,)? } )*) => { [$( AstNodeSrc { name: stringify!($name), traits: &[$($(stringify!($trait)),*)?], fields: &[$( (stringify!($field_name), field_ty!($field_name $($ty)?)) ),*], } ),*] }; } macro_rules! field_ty { ($field_name:ident) => { FieldSrc::Shorthand }; ($field_name:ident [$ty:ident]) => { FieldSrc::Many(stringify!($ty)) }; ($field_name:ident $ty:ident) => { FieldSrc::Optional(stringify!($ty)) }; } macro_rules! ast_enums { ($( enum $name:ident $(: $($trait:ident),*)? { $($variant:ident),*$(,)? } )*) => { [$( AstEnumSrc { name: stringify!($name), traits: &[$($(stringify!($trait)),*)?], variants: &[$(stringify!($variant)),*], } ),*] }; } pub(crate) const AST_SRC: AstSrc = AstSrc { nodes: &ast_nodes! { struct SourceFile: ModuleItemOwner, AttrsOwner { modules: [Module], } struct FnDef: VisibilityOwner, NameOwner, TypeParamsOwner, DocCommentsOwner, AttrsOwner { Abi, ConstKw, DefaultKw, AsyncKw, UnsafeKw, FnKw, ParamList, RetType, body: BlockExpr, Semi } struct RetType { ThinArrow, TypeRef } struct StructDef: VisibilityOwner, NameOwner, TypeParamsOwner, AttrsOwner, DocCommentsOwner { StructKw, FieldDefList, Semi } struct UnionDef: VisibilityOwner, NameOwner, TypeParamsOwner, AttrsOwner, DocCommentsOwner { UnionKw, RecordFieldDefList, } struct RecordFieldDefList { LCurly, fields: [RecordFieldDef], RCurly } struct RecordFieldDef: VisibilityOwner, NameOwner, AttrsOwner, DocCommentsOwner, TypeAscriptionOwner { } struct TupleFieldDefList { LParen, fields: [TupleFieldDef], RParen } struct TupleFieldDef: VisibilityOwner, AttrsOwner { TypeRef, } struct EnumDef: VisibilityOwner, NameOwner, TypeParamsOwner, AttrsOwner, DocCommentsOwner { EnumKw, variant_list: EnumVariantList, } struct EnumVariantList { LCurly, variants: [EnumVariant], RCurly } struct EnumVariant: VisibilityOwner, NameOwner, DocCommentsOwner, AttrsOwner { FieldDefList, Eq, Expr } struct TraitDef: VisibilityOwner, NameOwner, AttrsOwner, DocCommentsOwner, TypeParamsOwner, TypeBoundsOwner { UnsafeKw, AutoKw, TraitKw, ItemList, } struct Module: VisibilityOwner, NameOwner, AttrsOwner, DocCommentsOwner { ModKw, ItemList, Semi } struct ItemList: ModuleItemOwner { LCurly, impl_items: [ImplItem], RCurly } struct ConstDef: VisibilityOwner, NameOwner, TypeParamsOwner, AttrsOwner, DocCommentsOwner, TypeAscriptionOwner { DefaultKw, ConstKw, Eq, body: Expr, Semi } struct StaticDef: VisibilityOwner, NameOwner, TypeParamsOwner, AttrsOwner, DocCommentsOwner, TypeAscriptionOwner { StaticKw, MutKw, Eq, body: Expr, Semi } struct TypeAliasDef: VisibilityOwner, NameOwner, TypeParamsOwner, AttrsOwner, DocCommentsOwner, TypeBoundsOwner { DefaultKw, TypeKw, Eq, TypeRef, Semi } struct ImplDef: TypeParamsOwner, AttrsOwner { DefaultKw, ConstKw, UnsafeKw, ImplKw, Excl, ForKw, ItemList, } struct ParenType { LParen, TypeRef, RParen } struct TupleType { LParen, fields: [TypeRef], RParen } struct NeverType { Excl } struct PathType { Path } struct PointerType { Star, ConstKw, MutKw, TypeRef } struct ArrayType { LBrack, TypeRef, Semi, Expr, RBrack } struct SliceType { LBrack, TypeRef, RBrack } struct ReferenceType { Amp, Lifetime, MutKw, TypeRef } struct PlaceholderType { Underscore } struct FnPointerType { Abi, UnsafeKw, FnKw, ParamList, RetType } struct ForType { ForKw, TypeParamList, TypeRef } struct ImplTraitType: TypeBoundsOwner { ImplKw } struct DynTraitType: TypeBoundsOwner { DynKw } struct TupleExpr: AttrsOwner { LParen, exprs: [Expr], RParen } struct ArrayExpr: AttrsOwner { LBrack, exprs: [Expr], Semi, RBrack } struct ParenExpr: AttrsOwner { LParen, Expr, RParen } struct PathExpr { Path } struct LambdaExpr: AttrsOwner { StaticKw, AsyncKw, MoveKw, ParamList, RetType, body: Expr, } struct IfExpr: AttrsOwner { IfKw, Condition } struct LoopExpr: AttrsOwner, LoopBodyOwner { LoopKw } struct TryBlockExpr: AttrsOwner { TryKw, body: BlockExpr } struct ForExpr: AttrsOwner, LoopBodyOwner { ForKw, Pat, InKw, iterable: Expr, } struct WhileExpr: AttrsOwner, LoopBodyOwner { WhileKw, Condition } struct ContinueExpr: AttrsOwner { ContinueKw, Lifetime } struct BreakExpr: AttrsOwner { BreakKw, Lifetime, Expr } struct Label { Lifetime } struct BlockExpr: AttrsOwner { Label, UnsafeKw, Block } struct ReturnExpr: AttrsOwner { Expr } struct CallExpr: ArgListOwner { Expr } struct MethodCallExpr: AttrsOwner, ArgListOwner { Expr, Dot, NameRef, TypeArgList, } struct IndexExpr: AttrsOwner { LBrack, RBrack } struct FieldExpr: AttrsOwner { Expr, Dot, NameRef } struct AwaitExpr: AttrsOwner { Expr, Dot, AwaitKw } struct TryExpr: AttrsOwner { TryKw, Expr } struct CastExpr: AttrsOwner { Expr, AsKw, TypeRef } struct RefExpr: AttrsOwner { Amp, RawKw, MutKw, Expr } struct PrefixExpr: AttrsOwner { PrefixOp, Expr } struct BoxExpr: AttrsOwner { BoxKw, Expr } struct RangeExpr: AttrsOwner { RangeOp } struct BinExpr: AttrsOwner { BinOp } struct Literal { LiteralToken } struct MatchExpr: AttrsOwner { MatchKw, Expr, MatchArmList } struct MatchArmList: AttrsOwner { LCurly, arms: [MatchArm], RCurly } struct MatchArm: AttrsOwner { pat: Pat, guard: MatchGuard, FatArrow, Expr, } struct MatchGuard { IfKw, Expr } struct RecordLit { Path, RecordFieldList} struct RecordFieldList { LCurly, fields: [RecordField], Dotdot, spread: Expr, RCurly } struct RecordField: AttrsOwner { NameRef, Colon, Expr } struct OrPat { pats: [Pat] } struct ParenPat { LParen, Pat, RParen } struct RefPat { Amp, MutKw, Pat } struct BoxPat { BoxKw, Pat } struct BindPat: AttrsOwner, NameOwner { RefKw, MutKw, At, Pat } struct PlaceholderPat { Underscore } struct DotDotPat { Dotdot } struct PathPat { Path } struct SlicePat { LBrack, args: [Pat], RBrack } struct RangePat { RangeSeparator } struct LiteralPat { Literal } struct MacroPat { MacroCall } struct RecordPat { RecordFieldPatList, Path } struct RecordFieldPatList { LCurly, pats: [RecordInnerPat], record_field_pats: [RecordFieldPat], bind_pats: [BindPat], Dotdot, RCurly } struct RecordFieldPat: AttrsOwner, NameOwner { Colon, Pat } struct TupleStructPat { Path, LParen, args: [Pat], RParen } struct TuplePat { LParen, args: [Pat], RParen } struct Visibility { PubKw, SuperKw, SelfKw, CrateKw } struct Name { Ident } struct NameRef { NameRefToken } struct MacroCall: NameOwner, AttrsOwner,DocCommentsOwner { Path, Excl, TokenTree, Semi } struct Attr { Pound, Excl, LBrack, Path, Eq, input: AttrInput, RBrack } struct TokenTree {} struct TypeParamList { LAngle, generic_params: [GenericParam], type_params: [TypeParam], lifetime_params: [LifetimeParam], const_params: [ConstParam], RAngle } struct TypeParam: NameOwner, AttrsOwner, TypeBoundsOwner { Eq, default_type: TypeRef, } struct ConstParam: NameOwner, AttrsOwner, TypeAscriptionOwner { Eq, default_val: Expr, } struct LifetimeParam: AttrsOwner { Lifetime} struct TypeBound { Lifetime, /* Question, */ ConstKw, /* Question, */ TypeRef} struct TypeBoundList { bounds: [TypeBound] } struct WherePred: TypeBoundsOwner { Lifetime, TypeRef } struct WhereClause { WhereKw, predicates: [WherePred] } struct Abi { String } struct ExprStmt: AttrsOwner { Expr, Semi } struct LetStmt: AttrsOwner, TypeAscriptionOwner { LetKw, Pat, Eq, initializer: Expr, Semi, } struct Condition { LetKw, Pat, Eq, Expr } struct Block: AttrsOwner, ModuleItemOwner { LCurly, statements: [Stmt], Expr, RCurly, } struct ParamList { LParen, SelfParam, params: [Param], RParen } struct SelfParam: TypeAscriptionOwner, AttrsOwner { Amp, Lifetime, SelfKw } struct Param: TypeAscriptionOwner, AttrsOwner { Pat, Dotdotdot } struct UseItem: AttrsOwner, VisibilityOwner { UseKw, UseTree, } struct UseTree { Path, Star, UseTreeList, Alias } struct Alias: NameOwner { AsKw } struct UseTreeList { LCurly, use_trees: [UseTree], RCurly } struct ExternCrateItem: AttrsOwner, VisibilityOwner { ExternKw, CrateKw, NameRef, Alias, } struct ArgList { LParen, args: [Expr], RParen } struct Path { segment: PathSegment, qualifier: Path, } struct PathSegment { Coloncolon, LAngle, NameRef, TypeArgList, ParamList, RetType, PathType, RAngle } struct TypeArgList { Coloncolon, LAngle, generic_args: [GenericArg], type_args: [TypeArg], lifetime_args: [LifetimeArg], assoc_type_args: [AssocTypeArg], const_args: [ConstArg], RAngle } struct TypeArg { TypeRef } struct AssocTypeArg : TypeBoundsOwner { NameRef, Eq, TypeRef } struct LifetimeArg { Lifetime } struct ConstArg { Literal, Eq, BlockExpr } struct MacroItems: ModuleItemOwner{ } struct MacroStmts { statements: [Stmt], Expr, } struct ExternItemList: ModuleItemOwner { LCurly, extern_items: [ExternItem], RCurly } struct ExternBlock { Abi, ExternItemList } struct MetaItem { Path, Eq, AttrInput, nested_meta_items: [MetaItem] } struct MacroDef { Name, TokenTree } }, enums: &ast_enums! { enum NominalDef: NameOwner, TypeParamsOwner, AttrsOwner { StructDef, EnumDef, UnionDef, } enum GenericParam { LifetimeParam, TypeParam, ConstParam } enum GenericArg { LifetimeArg, TypeArg, ConstArg, AssocTypeArg } enum TypeRef { ParenType, TupleType, NeverType, PathType, PointerType, ArrayType, SliceType, ReferenceType, PlaceholderType, FnPointerType, ForType, ImplTraitType, DynTraitType, } enum ModuleItem: NameOwner, AttrsOwner, VisibilityOwner { StructDef, UnionDef, EnumDef, FnDef, TraitDef, TypeAliasDef, ImplDef, UseItem, ExternCrateItem, ConstDef, StaticDef, Module, MacroCall, ExternBlock } /* impl blocks can also contain MacroCall */ enum ImplItem: NameOwner, AttrsOwner { FnDef, TypeAliasDef, ConstDef } /* extern blocks can also contain MacroCall */ enum ExternItem: NameOwner, AttrsOwner, VisibilityOwner { FnDef, StaticDef } enum Expr: AttrsOwner { TupleExpr, ArrayExpr, ParenExpr, PathExpr, LambdaExpr, IfExpr, LoopExpr, ForExpr, WhileExpr, ContinueExpr, BreakExpr, Label, BlockExpr, ReturnExpr, MatchExpr, RecordLit, CallExpr, IndexExpr, MethodCallExpr, FieldExpr, AwaitExpr, TryExpr, TryBlockExpr, CastExpr, RefExpr, PrefixExpr, RangeExpr, BinExpr, Literal, MacroCall, BoxExpr, } enum Pat { OrPat, ParenPat, RefPat, BoxPat, BindPat, PlaceholderPat, DotDotPat, PathPat, RecordPat, TupleStructPat, TuplePat, SlicePat, RangePat, LiteralPat, MacroPat, } enum RecordInnerPat { RecordFieldPat, BindPat } enum AttrInput { Literal, TokenTree } enum Stmt { LetStmt, ExprStmt, // macro calls are parsed as expression statements */ } enum FieldDefList { RecordFieldDefList, TupleFieldDefList, } }, token_enums: &ast_enums! { enum LeftDelimiter { LParen, LBrack, LCurly } enum RightDelimiter { RParen, RBrack, RCurly } enum RangeSeparator { Dotdot, Dotdotdot, Dotdoteq} enum BinOp { Pipepipe, Ampamp, Eqeq, Neq, Lteq, Gteq, LAngle, RAngle, Plus, Star, Minus, Slash, Percent, Shl, Shr, Caret, Pipe, Amp, Eq, Pluseq, Slasheq, Stareq, Percenteq, Shreq, Shleq, Minuseq, Pipeeq, Ampeq, Careteq, } enum PrefixOp { Minus, Excl, Star } enum RangeOp { Dotdot, Dotdoteq } enum LiteralToken { IntNumber, FloatNumber, String, RawString, // TrueKw, // FalseKw, ByteString, RawByteString, Char, Byte } enum NameRefToken { Ident, IntNumber } }, };