Grammar( single_byte_tokens: [ [";", "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"], ], multi_byte_tokens: [ [".", "DOT"], ["..", "DOTDOT"], ["...", "DOTDOTDOT"], ["..=", "DOTDOTEQ"], [":", "COLON"], ["::", "COLONCOLON"], ["=", "EQ"], ["==", "EQEQ"], ["=>", "FAT_ARROW"], ["!", "EXCL"], ["!=", "NEQ"], ["-", "MINUS"], ["->", "THIN_ARROW"], ["<=", "LTEQ"], [">=", "GTEQ"], ["+=", "PLUSEQ"], ["-=", "MINUSEQ"], ["|=", "PIPEEQ"], ["&=", "AMPEQ"], ["^=", "CARETEQ"], ["/=", "SLASHEQ"], ["*=", "STAREQ"], ["&&", "AMPAMP"], ["||", "PIPEPIPE"], ["<<", "SHL"], [">>", "SHR"], ["<<=", "SHLEQ"], [">>=", "SHREQ"], ], keywords: [ "use", "fn", "struct", "enum", "trait", "impl", "dyn", "true", "false", "as", "extern", "crate", "mod", "pub", "self", "super", "in", "where", "for", "loop", "while", "continue", "break", "if", "else", "match", "const", "static", "mut", "unsafe", "type", "ref", "let", "move", "return", ], contextual_keywords: [ "auto", "default", "union", ], tokens: [ "ERROR", "IDENT", "UNDERSCORE", "WHITESPACE", "INT_NUMBER", "FLOAT_NUMBER", "LIFETIME", "CHAR", "BYTE", "STRING", "RAW_STRING", "BYTE_STRING", "RAW_BYTE_STRING", "COMMENT", "DOC_COMMENT", "SHEBANG", ], nodes: [ "ROOT", "STRUCT_DEF", "ENUM_DEF", "FN_DEF", "RET_TYPE", "EXTERN_CRATE_ITEM", "MODULE", "USE_ITEM", "STATIC_DEF", "CONST_DEF", "TRAIT_DEF", "IMPL_ITEM", "TYPE_DEF", "MACRO_CALL", "TOKEN_TREE", "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", "REF_PAT", "BIND_PAT", "PLACEHOLDER_PAT", "PATH_PAT", "STRUCT_PAT", "FIELD_PAT_LIST", "TUPLE_STRUCT_PAT", "TUPLE_PAT", "SLICE_PAT", "RANGE_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", "STRUCT_LIT", "NAMED_FIELD_LIST", "NAMED_FIELD", // postfix "CALL_EXPR", "INDEX_EXPR", "METHOD_CALL_EXPR", "FIELD_EXPR", "TRY_EXPR", "CAST_EXPR", // unary "REF_EXPR", "PREFIX_EXPR", "RANGE_EXPR", // just weird "BIN_EXPR", "BLOCK", "EXTERN_BLOCK", "EXTERN_ITEM_LIST", "ENUM_VARIANT", "NAMED_FIELD_DEF_LIST", "NAMED_FIELD_DEF", "POS_FIELD_LIST", "POS_FIELD", "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", "TYPE_ARG_LIST", "LIFETIME_ARG", "TYPE_ARG", "ASSOC_TYPE_ARG", "PARAM_LIST", "PARAM", "SELF_PARAM", "ARG_LIST", ], ast: { "Root": ( collections: [ ["items", "ModuleItem"], ["functions", "FnDef"], ["modules", "Module"], ] ), "FnDef": ( traits: [ "NameOwner", "TypeParamsOwner", "AttrsOwner", ], options: [ "ParamList", ["body", "Block"], "RetType" ], ), "RetType": (), "StructDef": ( traits: [ "NameOwner", "TypeParamsOwner", "AttrsOwner", ], collections: [ ["fields", "NamedFieldDef"] ] ), "NamedFieldDef": ( traits: ["NameOwner", "AttrsOwner"] ), "EnumDef": ( traits: [ "NameOwner", "TypeParamsOwner", "AttrsOwner", ] ), "TraitDef": ( traits: ["NameOwner", "AttrsOwner"] ), "Module": ( traits: ["NameOwner", "AttrsOwner"], collections: [ ["items", "ModuleItem"] ] ), "ConstDef": ( traits: [ "NameOwner", "TypeParamsOwner", "AttrsOwner", ] ), "StaticDef": ( traits: [ "NameOwner", "TypeParamsOwner", "AttrsOwner", ] ), "TypeDef": ( traits: [ "NameOwner", "TypeParamsOwner", "AttrsOwner", ] ), "ImplItem": (), "ParenType": (), "TupleType": (), "NeverType": (), "PathType": (), "PointerType": (), "ArrayType": (), "SliceType": (), "ReferenceType": (), "PlaceholderType": (), "FnPointerType": (), "ForType": (), "ImplTraitType": (), "DynTraitType": (), "TypeRef": ( enum: [ "ParenType", "TupleType", "NeverType", "PathType", "PointerType", "ArrayType", "SliceType", "ReferenceType", "PlaceholderType", "FnPointerType", "ForType", "ImplTraitType", "DynTraitType", ]), "NominalDef": ( enum: ["StructDef", "EnumDef"], traits: [ "NameOwner", "TypeParamsOwner", "AttrsOwner" ], ), "ModuleItem": ( enum: ["StructDef", "EnumDef", "FnDef", "TraitDef", "ImplItem", "UseItem", "ExternCrateItem", "ConstDef", "StaticDef", "Module" ] ), "TupleExpr": (), "ArrayExpr": (), "ParenExpr": (), "PathExpr": (), "LambdaExpr": ( options: [ "ParamList", ["body", "Expr"], ] ), "IfExpr": ( options: [ "Condition" ] ), "LoopExpr": ( traits: ["LoopBodyOwner"], ), "ForExpr": ( traits: ["LoopBodyOwner"], options: [ "Pat", ["iterable", "Expr"], ] ), "WhileExpr": ( traits: ["LoopBodyOwner"], options: [ "Condition" ] ), "ContinueExpr": (), "BreakExpr": (), "Label": (), "BlockExpr": ( options: [ "Block" ] ), "ReturnExpr": (), "MatchExpr": (), "MatchArmList": (), "MatchArm": (), "MatchGuard": (), "StructLit": (), "NamedFieldList": (), "NamedField": (), "CallExpr": ( options: [ "Expr", "ArgList" ] ), "IndexExpr": (), "MethodCallExpr": (), "FieldExpr": (), "TryExpr": (), "CastExpr": (), "RefExpr": (), "PrefixExpr": (), "RangeExpr": (), "BinExpr": (), "Literal": (), "Expr": ( enum: [ "TupleExpr", "ArrayExpr", "ParenExpr", "PathExpr", "LambdaExpr", "IfExpr", "LoopExpr", "ForExpr", "WhileExpr", "ContinueExpr", "BreakExpr", "Label", "BlockExpr", "ReturnExpr", "MatchExpr", "MatchArmList", "MatchArm", "MatchGuard", "StructLit", "NamedFieldList", "NamedField", "CallExpr", "IndexExpr", "MethodCallExpr", "FieldExpr", "TryExpr", "CastExpr", "RefExpr", "PrefixExpr", "RangeExpr", "BinExpr", "Literal", ], ), "RefPat": (), "BindPat": ( traits: ["NameOwner"] ), "PlaceholderPat": (), "PathPat": (), "StructPat": (), "FieldPatList": (), "TupleStructPat": (), "TuplePat": (), "SlicePat": (), "RangePat": (), "Pat": ( enum: [ "RefPat", "BindPat", "PlaceholderPat", "PathPat", "StructPat", "FieldPatList", "TupleStructPat", "TuplePat", "SlicePat", "RangePat", ], ), "Name": (), "NameRef": (), "Attr": ( options: [ ["value", "TokenTree"] ] ), "TokenTree": (), "TypeParamList": ( collections: [ ["type_params", "TypeParam" ], ["lifetime_params", "LifetimeParam" ], ] ), "TypeParam": ( traits: ["NameOwner"] ), "LifetimeParam": ( options: [ "Lifetime" ] ), "Lifetime": (), "WhereClause": (), "ExprStmt": ( options: [ ["expr", "Expr"] ] ), "LetStmt": ( options: [ ["pat", "Pat"], ["initializer", "Expr"], ]), "Condition": ( options: [ "Pat", "Expr" ] ), "Stmt": ( enum: ["ExprStmt", "LetStmt"], ), "Block": ( options: [ "Expr" ], collections: [ ["statements", "Stmt"], ] ), "ParamList": ( options: [ "SelfParam" ], collections: [ ["params", "Param"] ] ), "SelfParam": (), "Param": ( options: [ "Pat" ], ), "UseItem": ( options: [ "UseTree" ] ), "UseTree": ( options: [ "Path", "UseTreeList" ] ), "UseTreeList": ( collections: [["use_trees", "UseTree"]] ), "ExternCrateItem": (), "ArgList": ( collections: [ ["args", "Expr"] ] ), "Path": ( options: [ ["segment", "PathSegment"] ] ), "PathSegment": ( options: [ "NameRef" ] ), }, )