Add raw idents to lexer and parser

10 files changed, 25 insertions, 24 deletions

diff --git a/crates/ra_syntax/src/grammar/expressions.rs b/crates/ra_syntax/src/grammar/expressions.rs
index 2236555e0..107b7cda4 100644
--- a/crates/ra_syntax/src/grammar/expressions.rs
+++ b/crates/ra_syntax/src/grammar/expressions.rs
@@ -281,7 +281,7 @@ fn postfix_expr(
             // }
             L_PAREN if allow_calls => call_expr(p, lhs),
             L_BRACK if allow_calls => index_expr(p, lhs),
-            DOT if p.nth(1) == IDENT && (p.nth(2) == L_PAREN || p.nth(2) == COLONCOLON) => {
+            DOT if p.nth(1).is_ident() && (p.nth(2) == L_PAREN || p.nth(2) == COLONCOLON) => {
                 method_call_expr(p, lhs)
             }
             DOT => field_expr(p, lhs),
@@ -332,7 +332,7 @@ fn index_expr(p: &mut Parser, lhs: CompletedMarker) -> CompletedMarker {
 //     y.bar::<T>(1, 2,);
 // }
 fn method_call_expr(p: &mut Parser, lhs: CompletedMarker) -> CompletedMarker {
-    assert!(p.at(DOT) && p.nth(1) == IDENT && (p.nth(2) == L_PAREN || p.nth(2) == COLONCOLON));
+    assert!(p.at(DOT) && p.nth(1).is_ident() && (p.nth(2) == L_PAREN || p.nth(2) == COLONCOLON));
     let m = lhs.precede(p);
     p.bump();
     name_ref(p);
@@ -352,7 +352,7 @@ fn field_expr(p: &mut Parser, lhs: CompletedMarker) -> CompletedMarker {
     assert!(p.at(DOT));
     let m = lhs.precede(p);
     p.bump();
-    if p.at(IDENT) {
+    if p.current().is_ident() {
         name_ref(p)
     } else if p.at(INT_NUMBER) {
         p.bump()
@@ -443,7 +443,7 @@ pub(crate) fn named_field_list(p: &mut Parser) {
     p.bump();
     while !p.at(EOF) && !p.at(R_CURLY) {
         match p.current() {
-            IDENT => {
+            IDENT | RAW_IDENT => {
                 let m = p.start();
                 name_ref(p);
                 if p.eat(COLON) {
diff --git a/crates/ra_syntax/src/grammar/expressions/atom.rs b/crates/ra_syntax/src/grammar/expressions/atom.rs
index 167a76551..3fbe22856 100644
--- a/crates/ra_syntax/src/grammar/expressions/atom.rs
+++ b/crates/ra_syntax/src/grammar/expressions/atom.rs
@@ -48,6 +48,7 @@ pub(super) const ATOM_EXPR_FIRST: TokenSet = LITERAL_FIRST.union(token_set![
     UNSAFE_KW,
     RETURN_KW,
     IDENT,
+    RAW_IDENT,
     SELF_KW,
     SUPER_KW,
     CRATE_KW,
diff --git a/crates/ra_syntax/src/grammar/items.rs b/crates/ra_syntax/src/grammar/items.rs
index 265e84570..c49798444 100644
--- a/crates/ra_syntax/src/grammar/items.rs
+++ b/crates/ra_syntax/src/grammar/items.rs
@@ -99,11 +99,11 @@ pub(super) fn maybe_item(p: &mut Parser, flavor: ItemFlavor) -> MaybeItem {
         has_mods = true;
         abi(p);
     }
-    if p.at(IDENT) && p.at_contextual_kw("auto") && p.nth(1) == TRAIT_KW {
+    if p.current().is_ident() && p.at_contextual_kw("auto") && p.nth(1) == TRAIT_KW {
         p.bump_remap(AUTO_KW);
         has_mods = true;
     }
-    if p.at(IDENT) && p.at_contextual_kw("default") && p.nth(1) == IMPL_KW {
+    if p.current().is_ident() && p.at_contextual_kw("default") && p.nth(1) == IMPL_KW {
         p.bump_remap(DEFAULT_KW);
         has_mods = true;
     }
@@ -202,7 +202,7 @@ fn items_without_modifiers(p: &mut Parser) -> Option<SyntaxKind> {
             }
             STRUCT_DEF
         }
-        IDENT if p.at_contextual_kw("union") && p.nth(1) == IDENT => {
+        IDENT | RAW_IDENT if p.at_contextual_kw("union") && p.nth(1).is_ident() => {
             // test union_items
             // union Foo {}
             // union Foo {
@@ -220,7 +220,7 @@ fn items_without_modifiers(p: &mut Parser) -> Option<SyntaxKind> {
             use_item::use_item(p);
             USE_ITEM
         }
-        CONST_KW if (la == IDENT || la == MUT_KW) => {
+        CONST_KW if (la.is_ident() || la == MUT_KW) => {
             consts::const_def(p);
             CONST_DEF
         }
@@ -351,7 +351,7 @@ fn macro_call(p: &mut Parser) -> BlockLike {
 
 pub(super) fn macro_call_after_excl(p: &mut Parser) -> BlockLike {
     p.expect(EXCL);
-    p.eat(IDENT);
+    p.eat_one(&[IDENT, RAW_IDENT]);
     match p.current() {
         L_CURLY => {
             token_tree(p);
diff --git a/crates/ra_syntax/src/grammar/items/nominal.rs b/crates/ra_syntax/src/grammar/items/nominal.rs
index 0784fb7b1..897306883 100644
--- a/crates/ra_syntax/src/grammar/items/nominal.rs
+++ b/crates/ra_syntax/src/grammar/items/nominal.rs
@@ -70,7 +70,7 @@ pub(crate) fn enum_variant_list(p: &mut Parser) {
         }
         let var = p.start();
         attributes::outer_attributes(p);
-        if p.at(IDENT) {
+        if p.current().is_ident() {
             name(p);
             match p.current() {
                 L_CURLY => named_field_def_list(p),
@@ -120,7 +120,7 @@ pub(crate) fn named_field_def_list(p: &mut Parser) {
         // }
         attributes::outer_attributes(p);
         opt_visibility(p);
-        if p.at(IDENT) {
+        if p.current().is_ident() {
             name(p);
             p.expect(COLON);
             types::type_(p);
diff --git a/crates/ra_syntax/src/grammar/items/traits.rs b/crates/ra_syntax/src/grammar/items/traits.rs
index 0a0621753..a78bbba2b 100644
--- a/crates/ra_syntax/src/grammar/items/traits.rs
+++ b/crates/ra_syntax/src/grammar/items/traits.rs
@@ -112,7 +112,7 @@ fn choose_type_params_over_qpath(p: &Parser) -> bool {
     if p.nth(1) == POUND || p.nth(1) == R_ANGLE {
         return true;
     }
-    (p.nth(1) == LIFETIME || p.nth(1) == IDENT)
+    (p.nth(1) == LIFETIME || p.nth(1).is_ident())
         && (p.nth(2) == R_ANGLE || p.nth(2) == COMMA || p.nth(2) == COLON || p.nth(2) == EQ)
 }
 
diff --git a/crates/ra_syntax/src/grammar/params.rs b/crates/ra_syntax/src/grammar/params.rs
index 13158429a..ada07c17e 100644
--- a/crates/ra_syntax/src/grammar/params.rs
+++ b/crates/ra_syntax/src/grammar/params.rs
@@ -84,9 +84,9 @@ fn value_parameter(p: &mut Parser, flavor: Flavor) {
             // trait Foo {
             //     fn bar(_: u64);
             // }
-            if (la0 == IDENT || la0 == UNDERSCORE) && la1 == COLON
-                || la0 == AMP && la1 == IDENT && la2 == COLON
-                || la0 == AMP && la1 == MUT_KW && la2 == IDENT && la3 == COLON
+            if (la0.is_ident() || la0 == UNDERSCORE) && la1 == COLON
+                || la0 == AMP && la1.is_ident() && la2 == COLON
+                || la0 == AMP && la1 == MUT_KW && la2.is_ident() && la3 == COLON
             {
                 patterns::pattern(p);
                 types::ascription(p);
diff --git a/crates/ra_syntax/src/grammar/paths.rs b/crates/ra_syntax/src/grammar/paths.rs
index 33a11886c..0e1c1d334 100644
--- a/crates/ra_syntax/src/grammar/paths.rs
+++ b/crates/ra_syntax/src/grammar/paths.rs
@@ -1,11 +1,11 @@
 use super::*;
 
 pub(super) const PATH_FIRST: TokenSet =
-    token_set![IDENT, SELF_KW, SUPER_KW, CRATE_KW, COLONCOLON, L_ANGLE];
+    token_set![IDENT, RAW_IDENT, SELF_KW, SUPER_KW, CRATE_KW, COLONCOLON, L_ANGLE];
 
 pub(super) fn is_path_start(p: &Parser) -> bool {
     match p.current() {
-        IDENT | SELF_KW | SUPER_KW | CRATE_KW | COLONCOLON => true,
+        IDENT | RAW_IDENT | SELF_KW | SUPER_KW | CRATE_KW | COLONCOLON => true,
         _ => false,
     }
 }
@@ -70,7 +70,7 @@ fn path_segment(p: &mut Parser, mode: Mode, first: bool) {
             p.eat(COLONCOLON);
         }
         match p.current() {
-            IDENT => {
+            IDENT | RAW_IDENT => {
                 name_ref(p);
                 opt_path_type_args(p, mode);
             }
diff --git a/crates/ra_syntax/src/grammar/patterns.rs b/crates/ra_syntax/src/grammar/patterns.rs
index 1ac5efdf6..925eabe1b 100644
--- a/crates/ra_syntax/src/grammar/patterns.rs
+++ b/crates/ra_syntax/src/grammar/patterns.rs
@@ -37,7 +37,7 @@ fn atom_pat(p: &mut Parser, recovery_set: TokenSet) -> Option<CompletedMarker> {
     let la1 = p.nth(1);
     if la0 == REF_KW
         || la0 == MUT_KW
-        || (la0 == IDENT && !(la1 == COLONCOLON || la1 == L_PAREN || la1 == L_CURLY))
+        || (la0.is_ident() && !(la1 == COLONCOLON || la1 == L_PAREN || la1 == L_CURLY))
     {
         return Some(bind_pat(p, true));
     }
@@ -128,7 +128,7 @@ fn field_pat_list(p: &mut Parser) {
     while !p.at(EOF) && !p.at(R_CURLY) {
         match p.current() {
             DOTDOT => p.bump(),
-            IDENT if p.nth(1) == COLON => field_pat(p),
+            IDENT | RAW_IDENT if p.nth(1) == COLON => field_pat(p),
             L_CURLY => error_block(p, "expected ident"),
             _ => {
                 bind_pat(p, false);
@@ -143,7 +143,7 @@ fn field_pat_list(p: &mut Parser) {
 }
 
 fn field_pat(p: &mut Parser) {
-    assert!(p.at(IDENT));
+    assert!(p.current().is_ident());
     assert!(p.nth(1) == COLON);
 
     let m = p.start();
diff --git a/crates/ra_syntax/src/grammar/type_args.rs b/crates/ra_syntax/src/grammar/type_args.rs
index f889419c5..469595d71 100644
--- a/crates/ra_syntax/src/grammar/type_args.rs
+++ b/crates/ra_syntax/src/grammar/type_args.rs
@@ -34,7 +34,7 @@ fn type_arg(p: &mut Parser) {
             p.bump();
             m.complete(p, LIFETIME_ARG);
         }
-        IDENT if p.nth(1) == EQ => {
+        IDENT | RAW_IDENT if p.nth(1) == EQ => {
             name_ref(p);
             p.bump();
             types::type_(p);
diff --git a/crates/ra_syntax/src/grammar/type_params.rs b/crates/ra_syntax/src/grammar/type_params.rs
index 1ec813b3e..3cebd0675 100644
--- a/crates/ra_syntax/src/grammar/type_params.rs
+++ b/crates/ra_syntax/src/grammar/type_params.rs
@@ -15,7 +15,7 @@ fn type_param_list(p: &mut Parser) {
     while !p.at(EOF) && !p.at(R_ANGLE) {
         match p.current() {
             LIFETIME => lifetime_param(p),
-            IDENT => type_param(p),
+            IDENT | RAW_IDENT => type_param(p),
             _ => p.err_and_bump("expected type parameter"),
         }
         if !p.at(R_ANGLE) && !p.expect(COMMA) {
@@ -37,7 +37,7 @@ fn lifetime_param(p: &mut Parser) {
 }
 
 fn type_param(p: &mut Parser) {
-    assert!(p.at(IDENT));
+    assert!(p.current().is_ident());
     let m = p.start();
     name(p);
     if p.at(COLON) {