Rollup merge of #51502 - jebrosen:pub_parse_methods, r=Mark-Simulacrum

Make parse_seq_to_end and parse_path public

(see rwf2/Rocket#660, #51265)

Rocket currently uses `parse_seq_to_end` and `parse_path` in its codegen macros. Assuming I tested correctly, this is the minimal set of methods that are currently necessary to build Rocket again. I would be happy to add documentation of this and Rocket's other usages, if desired.

Author: Mark-Simulacrum

src/libsyntax/parse/parser.rs

@@ -1022,7 +1022,7 @@ impl<'a> Parser<'a> {
     /// Parse a sequence, including the closing delimiter. The function
     /// f must consume tokens until reaching the next separator or
     /// closing bracket.
-    crate fn parse_seq_to_end<T, F>(&mut self,
+    pub fn parse_seq_to_end<T, F>(&mut self,
                                   ket: &token::Token,
                                   sep: SeqSep,
                                   f: F)
@@ -1886,7 +1886,7 @@ impl<'a> Parser<'a> {
     /// `a::b::C::<D>` (with disambiguator)
     /// `Fn(Args)` (without disambiguator)
     /// `Fn::(Args)` (with disambiguator)
-    crate fn parse_path(&mut self, style: PathStyle) -> PResult<'a, ast::Path> {
+    pub fn parse_path(&mut self, style: PathStyle) -> PResult<'a, ast::Path> {
         self.parse_path_common(style, true)
     }