1 files changed, 0 insertions, 94 deletions

diff --git a/crates/ra_macros/src/mbe_parser.rs b/crates/ra_macros/src/mbe_parser.rs
deleted file mode 100644
index 483594590..000000000
--- a/crates/ra_macros/src/mbe_parser.rs
+++ /dev/null
@@ -1,94 +0,0 @@
-use crate::{tt, mbe};
-use crate::tt_cursor::TtCursor;
-
-/// This module parses a raw `tt::TokenStream` into macro-by-example token
-/// stream. This is a *mostly* identify function, expect for handling of
-/// `$var:tt_kind` and `$(repeat),*` constructs.
-
-pub fn parse(tt: &tt::Subtree) -> Option<mbe::MacroRules> {
-    let mut parser = TtCursor::new(tt);
-    let mut rules = Vec::new();
-    while !parser.is_eof() {
-        rules.push(parse_rule(&mut parser)?)
-    }
-    Some(mbe::MacroRules { rules })
-}
-
-fn parse_rule(p: &mut TtCursor) -> Option<mbe::Rule> {
-    let lhs = parse_subtree(p.eat_subtree()?)?;
-    p.expect_char('=')?;
-    p.expect_char('>')?;
-    let rhs = parse_subtree(p.eat_subtree()?)?;
-    Some(mbe::Rule { lhs, rhs })
-}
-
-fn parse_subtree(tt: &tt::Subtree) -> Option<mbe::Subtree> {
-    let mut token_trees = Vec::new();
-    let mut p = TtCursor::new(tt);
-    while let Some(tt) = p.eat() {
-        let child: mbe::TokenTree = match tt {
-            tt::TokenTree::Leaf(leaf) => match leaf {
-                tt::Leaf::Punct(tt::Punct { char: '$', .. }) => {
-                    if p.at_ident().is_some() {
-                        mbe::Leaf::from(parse_var(&mut p)?).into()
-                    } else {
-                        parse_repeat(&mut p)?.into()
-                    }
-                }
-                tt::Leaf::Punct(punct) => mbe::Leaf::from(*punct).into(),
-                tt::Leaf::Ident(tt::Ident { text }) => {
-                    mbe::Leaf::from(mbe::Ident { text: text.clone() }).into()
-                }
-                tt::Leaf::Literal(tt::Literal { text }) => {
-                    mbe::Leaf::from(mbe::Literal { text: text.clone() }).into()
-                }
-            },
-            tt::TokenTree::Subtree(subtree) => parse_subtree(subtree)?.into(),
-        };
-        token_trees.push(child);
-    }
-    Some(mbe::Subtree {
-        token_trees,
-        delimiter: tt.delimiter,
-    })
-}
-
-fn parse_var(p: &mut TtCursor) -> Option<mbe::Var> {
-    let ident = p.eat_ident().unwrap();
-    let text = ident.text.clone();
-    let kind = if p.at_char(':') {
-        p.bump();
-        if let Some(ident) = p.eat_ident() {
-            Some(ident.text.clone())
-        } else {
-            p.rev_bump();
-            None
-        }
-    } else {
-        None
-    };
-    Some(mbe::Var { text, kind })
-}
-
-fn parse_repeat(p: &mut TtCursor) -> Option<mbe::Repeat> {
-    let subtree = p.eat_subtree().unwrap();
-    let subtree = parse_subtree(subtree)?;
-    let sep = p.eat_punct()?;
-    let (separator, rep) = match sep.char {
-        '*' | '+' | '?' => (None, sep.char),
-        char => (Some(char), p.eat_punct()?.char),
-    };
-
-    let kind = match rep {
-        '*' => mbe::RepeatKind::ZeroOrMore,
-        '+' => mbe::RepeatKind::OneOrMore,
-        '?' => mbe::RepeatKind::ZeroOrOne,
-        _ => return None,
-    };
-    p.bump();
-    Some(mbe::Repeat {
-        subtree,
-        kind,
-        separator,
-    })
-}