A wrapper type to ensure that the parser handles outer attributes correctly. When we parse outer attributes, we need to ensure that we capture tokens for the attribute target. This allows us to perform cfg-expansion on a token stream before we invoke a derive proc-macro.

Stores span informations about a closure.

Parser

Restrictions

SeqSep

A sequence separator.

TokenCursor

TokenCursorFrame

Enums

AttemptLocalParseRecovery

BlockMode

Capturing

Controls how we capture tokens. Capturing can be expensive, so we try to avoid performing capturing in cases where we will never need an AttrAnnotatedTokenStream

FlatToken

A helper struct used when building an AttrAnnotatedTokenStream from a LazyTokenStream. Both delimiter and non-delimited tokens are stored as FlatToken::Token. A vector of FlatTokens is then ‘parsed’ to build up an AttrAnnotatedTokenStream with nested AttrAnnotatedTokenTree::Delimited tokens

FollowedByType

ForceCollect

Whether or not we should force collection of tokens for an AST node, regardless of whether or not it has attributes

PathStyle

Specifies how to parse a path.

RecoverColon

Whether or not to recover a : when parsing patterns that were meant to be paths.

RecoverComma

Whether or not to recover a , when parsing or-patterns.

SemiColonMode

TokenExpectType

TokenType