deps: update macro parsing

Author: calebcartwright

src/macros.rs

@@ -16,7 +16,8 @@ use rustc_ast::token::{BinOpToken, DelimToken, Token, TokenKind};
 use rustc_ast::tokenstream::{Cursor, TokenStream, TokenTree};
 use rustc_ast::{ast, ptr};
 use rustc_ast_pretty::pprust;
-use rustc_parse::{new_parser_from_tts, parser::Parser};
+use rustc_parse::parser::Parser;
+use rustc_parse::{stream_to_parser, MACRO_ARGUMENTS};
 use rustc_span::{
     symbol::{self, kw},
     BytePos, Span, Symbol, DUMMY_SP,
@@ -89,6 +90,14 @@ impl Rewrite for MacroArg {
     }
 }
 
+fn build_parser<'a>(context: &RewriteContext<'a>, cursor: Cursor) -> Parser<'a> {
+    stream_to_parser(
+        context.parse_sess.inner(),
+        cursor.collect(),
+        MACRO_ARGUMENTS,
+    )
+}
+
 fn parse_macro_arg<'a, 'b: 'a>(parser: &'a mut Parser<'b>) -> Option<MacroArg> {
     macro_rules! parse_macro_arg {
         ($macro_arg:ident, $parser:expr, $f:expr) => {
@@ -290,7 +299,7 @@ fn rewrite_macro_inner(
         }
     }
 
-    let mut parser = new_parser_from_tts(context.parse_sess.inner(), ts.trees().collect());
+    let mut parser = build_parser(context, ts.trees());
     let mut arg_vec = Vec::new();
     let mut vec_with_semi = false;
     let mut trailing_comma = false;
@@ -1196,7 +1205,7 @@ pub(crate) fn convert_try_mac(
     let path = &pprust::path_to_string(&mac.path);
     if path == "try" || path == "r#try" {
         let ts = mac.args.inner_tokens();
-        let mut parser = new_parser_from_tts(context.parse_sess.inner(), ts.trees().collect());
+        let mut parser = build_parser(context, ts.trees());
 
         Some(ast::Expr {
             id: ast::NodeId::root(), // dummy value
@@ -1429,7 +1438,7 @@ fn format_lazy_static(
     ts: &TokenStream,
 ) -> Option<String> {
     let mut result = String::with_capacity(1024);
-    let mut parser = new_parser_from_tts(context.parse_sess.inner(), ts.trees().collect());
+    let mut parser = build_parser(context, ts.trees());
     let nested_shape = shape
         .block_indent(context.config.tab_spaces())
         .with_max_width(context.config);