NamedMatch
is a pattern-match result for a single token::MATCH_NONTERMINAL
:
so it is associated with a single ident in a parse, and all
MatchedNonterminal
s in the NamedMatch
have the same nonterminal type
(expr, item, etc). Each leaf in a single NamedMatch
corresponds to a
single token::MATCH_NONTERMINAL
in the TokenTree
that produced it.
The in-memory structure of a particular NamedMatch
represents the match
that occurred when a particular subset of a matcher was applied to a
particular token tree.
The width of each MatchedSeq
in the NamedMatch
, and the identity of
the MatchedNonterminal
s, will depend on the token tree it was applied
to: each MatchedSeq
corresponds to a single TTSeq
in the originating
token tree. The depth of the NamedMatch
structure will therefore depend
only on the nesting depth of ast::TTSeq
s in the originating
token tree it was derived from.
Formats the value using the given formatter. Read more
Performs copy-assignment from source
. Read more