7 files changed, 106 insertions, 75 deletions

diff --git a/crates/ra_ide/src/syntax_highlighting.rs b/crates/ra_ide/src/syntax_highlighting.rs
index 6ac44c2c0..d456d5d36 100644
--- a/crates/ra_ide/src/syntax_highlighting.rs
+++ b/crates/ra_ide/src/syntax_highlighting.rs
@@ -539,21 +539,52 @@ fn highlight_element(
                 _ => h,
             }
         }
-        T![*] => {
-            let prefix_expr = element.parent().and_then(ast::PrefixExpr::cast)?;
-
-            let expr = prefix_expr.expr()?;
-            let ty = sema.type_of_expr(&expr)?;
-            if !ty.is_raw_ptr() {
-                return None;
-            } else {
-                HighlightTag::Operator | HighlightModifier::Unsafe
+        p if p.is_punct() => match p {
+            T![::] | T![->] | T![=>] | T![&] | T![..] | T![=] | T![@] => {
+                HighlightTag::Operator.into()
             }
-        }
-        T![!] if element.parent().and_then(ast::MacroCall::cast).is_some() => {
-            Highlight::new(HighlightTag::Macro)
-        }
-        p if p.is_punct() => HighlightTag::Punctuation.into(),
+            T![!] if element.parent().and_then(ast::MacroCall::cast).is_some() => {
+                HighlightTag::Macro.into()
+            }
+            T![*] if element.parent().and_then(ast::PointerType::cast).is_some() => {
+                HighlightTag::Keyword.into()
+            }
+            T![*] if element.parent().and_then(ast::PrefixExpr::cast).is_some() => {
+                let prefix_expr = element.parent().and_then(ast::PrefixExpr::cast)?;
+
+                let expr = prefix_expr.expr()?;
+                let ty = sema.type_of_expr(&expr)?;
+                if ty.is_raw_ptr() {
+                    HighlightTag::Operator | HighlightModifier::Unsafe
+                } else if let Some(ast::PrefixOp::Deref) = prefix_expr.op_kind() {
+                    HighlightTag::Operator.into()
+                } else {
+                    HighlightTag::Punctuation.into()
+                }
+            }
+            T![-] if element.parent().and_then(ast::PrefixExpr::cast).is_some() => {
+                HighlightTag::NumericLiteral.into()
+            }
+            _ if element.parent().and_then(ast::PrefixExpr::cast).is_some() => {
+                HighlightTag::Operator.into()
+            }
+            _ if element.parent().and_then(ast::BinExpr::cast).is_some() => {
+                HighlightTag::Operator.into()
+            }
+            _ if element.parent().and_then(ast::RangeExpr::cast).is_some() => {
+                HighlightTag::Operator.into()
+            }
+            _ if element.parent().and_then(ast::RangePat::cast).is_some() => {
+                HighlightTag::Operator.into()
+            }
+            _ if element.parent().and_then(ast::DotDotPat::cast).is_some() => {
+                HighlightTag::Operator.into()
+            }
+            _ if element.parent().and_then(ast::Attr::cast).is_some() => {
+                HighlightTag::Attribute.into()
+            }
+            _ => HighlightTag::Punctuation.into(),
+        },
 
         k if k.is_keyword() => {
             let h = Highlight::new(HighlightTag::Keyword);
diff --git a/crates/ra_ide/test_data/highlight_doctest.html b/crates/ra_ide/test_data/highlight_doctest.html
index 1cc17d6d0..6322d404f 100644
--- a/crates/ra_ide/test_data/highlight_doctest.html
+++ b/crates/ra_ide/test_data/highlight_doctest.html
@@ -36,24 +36,24 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
 .unresolved_reference { color: #FC5555; text-decoration: wavy underline; }
 </style>
 <pre><code><span class="comment documentation">/// ```</span>
-<span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="punctuation injected">_</span><span class="generic injected"> </span><span class="punctuation injected">=</span><span class="generic injected"> </span><span class="string_literal injected">"early doctests should not go boom"</span><span class="punctuation injected">;</span><span class="punctuation injected">
+<span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="punctuation injected">_</span><span class="generic injected"> </span><span class="operator injected">=</span><span class="generic injected"> </span><span class="string_literal injected">"early doctests should not go boom"</span><span class="punctuation injected">;</span><span class="punctuation injected">
 </span><span class="comment documentation">/// ```</span>
 <span class="keyword">struct</span> <span class="struct declaration">Foo</span> <span class="punctuation">{</span>
     <span class="field declaration">bar</span><span class="punctuation">:</span> <span class="builtin_type">bool</span><span class="punctuation">,</span>
 <span class="punctuation">}</span>
 
 <span class="keyword">impl</span> <span class="struct">Foo</span> <span class="punctuation">{</span>
-    <span class="keyword">pub</span> <span class="keyword">const</span> <span class="constant declaration">bar</span><span class="punctuation">:</span> <span class="builtin_type">bool</span> <span class="punctuation">=</span> <span class="bool_literal">true</span><span class="punctuation">;</span>
+    <span class="keyword">pub</span> <span class="keyword">const</span> <span class="constant declaration">bar</span><span class="punctuation">:</span> <span class="builtin_type">bool</span> <span class="operator">=</span> <span class="bool_literal">true</span><span class="punctuation">;</span>
 
     <span class="comment documentation">/// Constructs a new `Foo`.</span>
     <span class="comment documentation">///</span>
     <span class="comment documentation">/// # Examples</span>
     <span class="comment documentation">///</span>
     <span class="comment documentation">/// ```</span>
-    <span class="comment documentation">/// #</span><span class="generic injected"> </span><span class="punctuation injected">#</span><span class="punctuation injected">!</span><span class="punctuation injected">[</span><span class="function attribute injected">allow</span><span class="punctuation injected">(</span><span class="attribute injected">unused_mut</span><span class="punctuation injected">)</span><span class="punctuation injected">]</span>
-    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="keyword injected">mut</span><span class="generic injected"> </span><span class="variable declaration injected mutable">foo</span><span class="punctuation injected">:</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="generic injected"> </span><span class="punctuation injected">=</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="punctuation injected">::</span><span class="function injected">new</span><span class="punctuation injected">(</span><span class="punctuation injected">)</span><span class="punctuation injected">;</span><span class="punctuation injected">
+    <span class="comment documentation">/// #</span><span class="generic injected"> </span><span class="attribute injected">#</span><span class="attribute injected">!</span><span class="attribute injected">[</span><span class="function attribute injected">allow</span><span class="punctuation injected">(</span><span class="attribute injected">unused_mut</span><span class="punctuation injected">)</span><span class="attribute injected">]</span>
+    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="keyword injected">mut</span><span class="generic injected"> </span><span class="variable declaration injected mutable">foo</span><span class="punctuation injected">:</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="generic injected"> </span><span class="operator injected">=</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="operator injected">::</span><span class="function injected">new</span><span class="punctuation injected">(</span><span class="punctuation injected">)</span><span class="punctuation injected">;</span><span class="punctuation injected">
 </span>    <span class="comment documentation">/// ```</span>
-    <span class="keyword">pub</span> <span class="keyword">const</span> <span class="keyword">fn</span> <span class="function declaration">new</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">-&gt;</span> <span class="struct">Foo</span> <span class="punctuation">{</span>
+    <span class="keyword">pub</span> <span class="keyword">const</span> <span class="keyword">fn</span> <span class="function declaration">new</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="operator">-&gt;</span> <span class="struct">Foo</span> <span class="punctuation">{</span>
         <span class="struct">Foo</span> <span class="punctuation">{</span> <span class="field">bar</span><span class="punctuation">:</span> <span class="bool_literal">true</span> <span class="punctuation">}</span>
     <span class="punctuation">}</span>
 
@@ -62,32 +62,32 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
     <span class="comment documentation">/// # Examples</span>
     <span class="comment documentation">///</span>
     <span class="comment documentation">/// ```</span>
-    <span class="comment documentation">/// </span><span class="keyword injected">use</span><span class="generic injected"> </span><span class="module injected">x</span><span class="punctuation injected">::</span><span class="module injected">y</span><span class="punctuation injected">;</span>
+    <span class="comment documentation">/// </span><span class="keyword injected">use</span><span class="generic injected"> </span><span class="module injected">x</span><span class="operator injected">::</span><span class="module injected">y</span><span class="punctuation injected">;</span>
     <span class="comment documentation">///</span>
-    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="variable declaration injected">foo</span><span class="generic injected"> </span><span class="punctuation injected">=</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="punctuation injected">::</span><span class="function injected">new</span><span class="punctuation injected">(</span><span class="punctuation injected">)</span><span class="punctuation injected">;</span>
+    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="variable declaration injected">foo</span><span class="generic injected"> </span><span class="operator injected">=</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="operator injected">::</span><span class="function injected">new</span><span class="punctuation injected">(</span><span class="punctuation injected">)</span><span class="punctuation injected">;</span>
     <span class="comment documentation">///</span>
     <span class="comment documentation">/// </span><span class="comment injected">// calls bar on foo</span>
     <span class="comment documentation">/// </span><span class="macro injected">assert!</span><span class="punctuation injected">(</span><span class="generic injected">foo</span><span class="punctuation injected">.</span><span class="generic injected">bar</span><span class="punctuation injected">(</span><span class="punctuation injected">)</span><span class="punctuation injected">)</span><span class="punctuation injected">;</span>
     <span class="comment documentation">///</span>
-    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="variable declaration injected">bar</span><span class="generic injected"> </span><span class="punctuation injected">=</span><span class="generic injected"> </span><span class="variable injected">foo</span><span class="punctuation injected">.</span><span class="field injected">bar</span><span class="generic injected"> </span><span class="punctuation injected">||</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="punctuation injected">::</span><span class="constant injected">bar</span><span class="punctuation injected">;</span>
+    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="variable declaration injected">bar</span><span class="generic injected"> </span><span class="operator injected">=</span><span class="generic injected"> </span><span class="variable injected">foo</span><span class="punctuation injected">.</span><span class="field injected">bar</span><span class="generic injected"> </span><span class="operator injected">||</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="operator injected">::</span><span class="constant injected">bar</span><span class="punctuation injected">;</span>
     <span class="comment documentation">///</span>
     <span class="comment documentation">/// </span><span class="comment injected">/* multi-line
     </span><span class="comment documentation">/// </span><span class="comment injected">       comment */</span>
     <span class="comment documentation">///</span>
-    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="variable declaration injected">multi_line_string</span><span class="generic injected"> </span><span class="punctuation injected">=</span><span class="generic injected"> </span><span class="string_literal injected">"Foo
+    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="variable declaration injected">multi_line_string</span><span class="generic injected"> </span><span class="operator injected">=</span><span class="generic injected"> </span><span class="string_literal injected">"Foo
     </span><span class="comment documentation">/// </span><span class="string_literal injected">  bar
     </span><span class="comment documentation">/// </span><span class="string_literal injected">         "</span><span class="punctuation injected">;</span>
     <span class="comment documentation">///</span>
     <span class="comment documentation">/// ```</span>
     <span class="comment documentation">///</span>
     <span class="comment documentation">/// ```rust,no_run</span>
-    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="variable declaration injected">foobar</span><span class="generic injected"> </span><span class="punctuation injected">=</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="punctuation injected">::</span><span class="function injected">new</span><span class="punctuation injected">(</span><span class="punctuation injected">)</span><span class="punctuation injected">.</span><span class="function injected">bar</span><span class="punctuation injected">(</span><span class="punctuation injected">)</span><span class="punctuation injected">;</span><span class="punctuation injected">
+    <span class="comment documentation">/// </span><span class="keyword injected">let</span><span class="generic injected"> </span><span class="variable declaration injected">foobar</span><span class="generic injected"> </span><span class="operator injected">=</span><span class="generic injected"> </span><span class="struct injected">Foo</span><span class="operator injected">::</span><span class="function injected">new</span><span class="punctuation injected">(</span><span class="punctuation injected">)</span><span class="punctuation injected">.</span><span class="function injected">bar</span><span class="punctuation injected">(</span><span class="punctuation injected">)</span><span class="punctuation injected">;</span><span class="punctuation injected">
 </span>    <span class="comment documentation">/// ```</span>
     <span class="comment documentation">///</span>
     <span class="comment documentation">/// ```sh</span>
     <span class="comment documentation">/// echo 1</span>
     <span class="comment documentation">/// ```</span>
-    <span class="keyword">pub</span> <span class="keyword">fn</span> <span class="function declaration">foo</span><span class="punctuation">(</span><span class="punctuation">&</span><span class="self_keyword">self</span><span class="punctuation">)</span> <span class="punctuation">-&gt;</span> <span class="builtin_type">bool</span> <span class="punctuation">{</span>
+    <span class="keyword">pub</span> <span class="keyword">fn</span> <span class="function declaration">foo</span><span class="punctuation">(</span><span class="operator">&</span><span class="self_keyword">self</span><span class="punctuation">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">bool</span> <span class="punctuation">{</span>
         <span class="bool_literal">true</span>
     <span class="punctuation">}</span>
 <span class="punctuation">}</span>
@@ -96,7 +96,7 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
 <span class="comment documentation">/// </span><span class="macro injected">noop!</span><span class="punctuation injected">(</span><span class="numeric_literal injected">1</span><span class="punctuation injected">)</span><span class="punctuation injected">;</span><span class="punctuation injected">
 </span><span class="comment documentation">/// ```</span>
 <span class="macro">macro_rules!</span> <span class="macro declaration">noop</span> <span class="punctuation">{</span>
-    <span class="punctuation">(</span><span class="punctuation">$</span>expr<span class="punctuation">:</span>expr<span class="punctuation">)</span> <span class="punctuation">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span>
+    <span class="punctuation">(</span><span class="punctuation">$</span>expr<span class="punctuation">:</span>expr<span class="punctuation">)</span> <span class="operator">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span>
         <span class="punctuation">$</span>expr
     <span class="punctuation">}</span>
 <span class="punctuation">}</span></code></pre>
\ No newline at end of file
diff --git a/crates/ra_ide/test_data/highlight_injection.html b/crates/ra_ide/test_data/highlight_injection.html
index 461cfc437..18addd00d 100644
--- a/crates/ra_ide/test_data/highlight_injection.html
+++ b/crates/ra_ide/test_data/highlight_injection.html
@@ -35,7 +35,7 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
 
 .unresolved_reference { color: #FC5555; text-decoration: wavy underline; }
 </style>
-<pre><code><span class="keyword">fn</span> <span class="function declaration">fixture</span><span class="punctuation">(</span><span class="value_param declaration">ra_fixture</span><span class="punctuation">:</span> <span class="punctuation">&</span><span class="builtin_type">str</span><span class="punctuation">)</span> <span class="punctuation">{</span><span class="punctuation">}</span>
+<pre><code><span class="keyword">fn</span> <span class="function declaration">fixture</span><span class="punctuation">(</span><span class="value_param declaration">ra_fixture</span><span class="punctuation">:</span> <span class="operator">&</span><span class="builtin_type">str</span><span class="punctuation">)</span> <span class="punctuation">{</span><span class="punctuation">}</span>
 
 <span class="keyword">fn</span> <span class="function declaration">main</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
     <span class="function">fixture</span><span class="punctuation">(</span><span class="string_literal">r#"</span>
diff --git a/crates/ra_ide/test_data/highlight_strings.html b/crates/ra_ide/test_data/highlight_strings.html
index 9f98e73e7..1b681b2c6 100644
--- a/crates/ra_ide/test_data/highlight_strings.html
+++ b/crates/ra_ide/test_data/highlight_strings.html
@@ -36,14 +36,14 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
 .unresolved_reference { color: #FC5555; text-decoration: wavy underline; }
 </style>
 <pre><code><span class="macro">macro_rules!</span> <span class="macro declaration">println</span> <span class="punctuation">{</span>
-    <span class="punctuation">(</span><span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>arg<span class="punctuation">:</span>tt<span class="punctuation">)</span>*<span class="punctuation">)</span> <span class="punctuation">=</span><span class="punctuation">&gt;</span> <span class="punctuation">(</span><span class="punctuation">{</span>
-        <span class="punctuation">$</span><span class="keyword">crate</span><span class="punctuation">:</span><span class="punctuation">:</span>io<span class="punctuation">:</span><span class="punctuation">:</span>_print<span class="punctuation">(</span><span class="punctuation">$</span><span class="keyword">crate</span><span class="punctuation">:</span><span class="punctuation">:</span>format_args_nl<span class="punctuation">!</span><span class="punctuation">(</span><span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>arg<span class="punctuation">)</span>*<span class="punctuation">)</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="punctuation">(</span><span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>arg<span class="punctuation">:</span>tt<span class="punctuation">)</span><span class="punctuation">*</span><span class="punctuation">)</span> <span class="operator">=</span><span class="punctuation">&gt;</span> <span class="punctuation">(</span><span class="punctuation">{</span>
+        <span class="punctuation">$</span><span class="keyword">crate</span><span class="punctuation">:</span><span class="punctuation">:</span>io<span class="punctuation">:</span><span class="punctuation">:</span>_print<span class="punctuation">(</span><span class="punctuation">$</span><span class="keyword">crate</span><span class="punctuation">:</span><span class="punctuation">:</span>format_args_nl<span class="punctuation">!</span><span class="punctuation">(</span><span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>arg<span class="punctuation">)</span><span class="punctuation">*</span><span class="punctuation">)</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="punctuation">}</span><span class="punctuation">)</span>
 <span class="punctuation">}</span>
 #[rustc_builtin_macro]
 <span class="macro">macro_rules!</span> <span class="macro declaration">format_args_nl</span> <span class="punctuation">{</span>
-    <span class="punctuation">(</span><span class="punctuation">$</span>fmt<span class="punctuation">:</span>expr<span class="punctuation">)</span> <span class="punctuation">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span><span class="punctuation">{</span> <span class="comment">/* compiler built-in */</span> <span class="punctuation">}</span><span class="punctuation">}</span><span class="punctuation">;</span>
-    <span class="punctuation">(</span><span class="punctuation">$</span>fmt<span class="punctuation">:</span>expr<span class="punctuation">,</span> <span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>args<span class="punctuation">:</span>tt<span class="punctuation">)</span>*<span class="punctuation">)</span> <span class="punctuation">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span><span class="punctuation">{</span> <span class="comment">/* compiler built-in */</span> <span class="punctuation">}</span><span class="punctuation">}</span><span class="punctuation">;</span>
+    <span class="punctuation">(</span><span class="punctuation">$</span>fmt<span class="punctuation">:</span>expr<span class="punctuation">)</span> <span class="operator">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span><span class="punctuation">{</span> <span class="comment">/* compiler built-in */</span> <span class="punctuation">}</span><span class="punctuation">}</span><span class="punctuation">;</span>
+    <span class="punctuation">(</span><span class="punctuation">$</span>fmt<span class="punctuation">:</span>expr<span class="punctuation">,</span> <span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>args<span class="punctuation">:</span>tt<span class="punctuation">)</span><span class="punctuation">*</span><span class="punctuation">)</span> <span class="operator">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span><span class="punctuation">{</span> <span class="comment">/* compiler built-in */</span> <span class="punctuation">}</span><span class="punctuation">}</span><span class="punctuation">;</span>
 <span class="punctuation">}</span>
 
 <span class="keyword">fn</span> <span class="function declaration">main</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
@@ -52,18 +52,18 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello, </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="punctuation">,</span> <span class="string_literal">"world"</span><span class="punctuation">)</span><span class="punctuation">;</span>   <span class="comment">// =&gt; "Hello, world!"</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"The number is </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="numeric_literal">1</span><span class="punctuation">)</span><span class="punctuation">;</span>   <span class="comment">// =&gt; "The number is 1"</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">?</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="punctuation">(</span><span class="numeric_literal">3</span><span class="punctuation">,</span> <span class="numeric_literal">4</span><span class="punctuation">)</span><span class="punctuation">)</span><span class="punctuation">;</span>          <span class="comment">// =&gt; "(3, 4)"</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">value</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> value<span class="punctuation">=</span><span class="numeric_literal">4</span><span class="punctuation">)</span><span class="punctuation">;</span>      <span class="comment">// =&gt; "4"</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">value</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> value<span class="operator">=</span><span class="numeric_literal">4</span><span class="punctuation">)</span><span class="punctuation">;</span>      <span class="comment">// =&gt; "4"</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="numeric_literal">1</span><span class="punctuation">,</span> <span class="numeric_literal">2</span><span class="punctuation">)</span><span class="punctuation">;</span>           <span class="comment">// =&gt; "1 2"</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="numeric_literal">4</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="numeric_literal">42</span><span class="punctuation">)</span><span class="punctuation">;</span>             <span class="comment">// =&gt; "0042" with leading zerosV</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="numeric_literal">1</span><span class="punctuation">,</span> <span class="numeric_literal">2</span><span class="punctuation">)</span><span class="punctuation">;</span>   <span class="comment">// =&gt; "2 1 1 2"</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">argument</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> argument <span class="punctuation">=</span> <span class="string_literal">"test"</span><span class="punctuation">)</span><span class="punctuation">;</span>   <span class="comment">// =&gt; "test"</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="numeric_literal">1</span><span class="punctuation">,</span> name <span class="punctuation">=</span> <span class="numeric_literal">2</span><span class="punctuation">)</span><span class="punctuation">;</span>          <span class="comment">// =&gt; "2 1"</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">a</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="variable">c</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="variable">b</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> a<span class="punctuation">=</span><span class="string_literal">"a"</span><span class="punctuation">,</span> b<span class="punctuation">=</span><span class="char_literal">'b'</span><span class="punctuation">,</span> c<span class="punctuation">=</span><span class="numeric_literal">3</span><span class="punctuation">)</span><span class="punctuation">;</span>  <span class="comment">// =&gt; "a 3 b"</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">argument</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> argument <span class="operator">=</span> <span class="string_literal">"test"</span><span class="punctuation">)</span><span class="punctuation">;</span>   <span class="comment">// =&gt; "test"</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="numeric_literal">1</span><span class="punctuation">,</span> name <span class="operator">=</span> <span class="numeric_literal">2</span><span class="punctuation">)</span><span class="punctuation">;</span>          <span class="comment">// =&gt; "2 1"</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">a</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="variable">c</span><span class="format_specifier">}</span><span class="string_literal"> </span><span class="format_specifier">{</span><span class="variable">b</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> a<span class="operator">=</span><span class="string_literal">"a"</span><span class="punctuation">,</span> b<span class="operator">=</span><span class="char_literal">'b'</span><span class="punctuation">,</span> c<span class="operator">=</span><span class="numeric_literal">3</span><span class="punctuation">)</span><span class="punctuation">;</span>  <span class="comment">// =&gt; "a 3 b"</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"{{</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">}}"</span><span class="punctuation">,</span> <span class="numeric_literal">2</span><span class="punctuation">)</span><span class="punctuation">;</span>                       <span class="comment">// =&gt; "{2}"</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="numeric_literal">1</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">,</span> <span class="numeric_literal">5</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">1</span><span class="format_specifier">:</span><span class="numeric_literal">0</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="punctuation">,</span> <span class="numeric_literal">5</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">)</span><span class="punctuation">;</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="variable">width</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">,</span> width <span class="punctuation">=</span> <span class="numeric_literal">5</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="variable">width</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">,</span> width <span class="operator">=</span> <span class="numeric_literal">5</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">&lt;</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">-</span><span class="format_specifier">&lt;</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">^</span><span class="numeric_literal">5</span><span class="format_specifier">}</span><span class="string_literal">!"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">)</span><span class="punctuation">;</span>
@@ -78,10 +78,10 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="numeric_literal">0</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">2</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="numeric_literal">1</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">,</span> <span class="numeric_literal">5</span><span class="punctuation">,</span> <span class="numeric_literal">0.01</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span>    <span class="string_literal">"x"</span><span class="punctuation">,</span> <span class="numeric_literal">5</span><span class="punctuation">,</span> <span class="numeric_literal">0.01</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="numeric_literal">2</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span>   <span class="string_literal">"x"</span><span class="punctuation">,</span> <span class="numeric_literal">5</span><span class="punctuation">,</span> <span class="numeric_literal">0.01</span><span class="punctuation">)</span><span class="punctuation">;</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="variable">number</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="variable">prec</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">,</span> prec <span class="punctuation">=</span> <span class="numeric_literal">5</span><span class="punctuation">,</span> number <span class="punctuation">=</span> <span class="numeric_literal">0.01</span><span class="punctuation">)</span><span class="punctuation">;</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 fractional digits"</span><span class="punctuation">,</span> <span class="string_literal">"Hello"</span><span class="punctuation">,</span> <span class="numeric_literal">3</span><span class="punctuation">,</span> name<span class="punctuation">=</span><span class="numeric_literal">1234.56</span><span class="punctuation">)</span><span class="punctuation">;</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 characters"</span><span class="punctuation">,</span> <span class="string_literal">"Hello"</span><span class="punctuation">,</span> <span class="numeric_literal">3</span><span class="punctuation">,</span> name<span class="punctuation">=</span><span class="string_literal">"1234.56"</span><span class="punctuation">)</span><span class="punctuation">;</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">&gt;</span><span class="numeric_literal">8</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 right-aligned characters"</span><span class="punctuation">,</span> <span class="string_literal">"Hello"</span><span class="punctuation">,</span> <span class="numeric_literal">3</span><span class="punctuation">,</span> name<span class="punctuation">=</span><span class="string_literal">"1234.56"</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello </span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal"> is </span><span class="format_specifier">{</span><span class="variable">number</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="variable">prec</span><span class="format_specifier">$</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> <span class="string_literal">"x"</span><span class="punctuation">,</span> prec <span class="operator">=</span> <span class="numeric_literal">5</span><span class="punctuation">,</span> number <span class="operator">=</span> <span class="numeric_literal">0.01</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 fractional digits"</span><span class="punctuation">,</span> <span class="string_literal">"Hello"</span><span class="punctuation">,</span> <span class="numeric_literal">3</span><span class="punctuation">,</span> name<span class="operator">=</span><span class="numeric_literal">1234.56</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 characters"</span><span class="punctuation">,</span> <span class="string_literal">"Hello"</span><span class="punctuation">,</span> <span class="numeric_literal">3</span><span class="punctuation">,</span> name<span class="operator">=</span><span class="string_literal">"1234.56"</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="format_specifier">}</span><span class="string_literal">, `</span><span class="format_specifier">{</span><span class="variable">name</span><span class="format_specifier">:</span><span class="format_specifier">&gt;</span><span class="numeric_literal">8</span><span class="format_specifier">.</span><span class="format_specifier">*</span><span class="format_specifier">}</span><span class="string_literal">` has 3 right-aligned characters"</span><span class="punctuation">,</span> <span class="string_literal">"Hello"</span><span class="punctuation">,</span> <span class="numeric_literal">3</span><span class="punctuation">,</span> name<span class="operator">=</span><span class="string_literal">"1234.56"</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello {{}}"</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"{{ Hello"</span><span class="punctuation">)</span><span class="punctuation">;</span>
 
@@ -91,6 +91,6 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello</span><span class="escape_sequence">\n</span><span class="string_literal">World"</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="escape_sequence">\u{48}</span><span class="escape_sequence">\x65</span><span class="escape_sequence">\x6C</span><span class="escape_sequence">\x6C</span><span class="escape_sequence">\x6F</span><span class="string_literal"> World"</span><span class="punctuation">)</span><span class="punctuation">;</span>
 
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="escape_sequence">\x41</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> A <span class="punctuation">=</span> <span class="numeric_literal">92</span><span class="punctuation">)</span><span class="punctuation">;</span>
-    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">ничоси</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> ничоси <span class="punctuation">=</span> <span class="numeric_literal">92</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="escape_sequence">\x41</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> A <span class="operator">=</span> <span class="numeric_literal">92</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"</span><span class="format_specifier">{</span><span class="variable">ничоси</span><span class="format_specifier">}</span><span class="string_literal">"</span><span class="punctuation">,</span> ничоси <span class="operator">=</span> <span class="numeric_literal">92</span><span class="punctuation">)</span><span class="punctuation">;</span>
 <span class="punctuation">}</span></code></pre>
\ No newline at end of file
diff --git a/crates/ra_ide/test_data/highlight_unsafe.html b/crates/ra_ide/test_data/highlight_unsafe.html
index 88ac91f9a..b81b6f1c3 100644
--- a/crates/ra_ide/test_data/highlight_unsafe.html
+++ b/crates/ra_ide/test_data/highlight_unsafe.html
@@ -40,15 +40,15 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
 <span class="keyword">struct</span> <span class="struct declaration">HasUnsafeFn</span><span class="punctuation">;</span>
 
 <span class="keyword">impl</span> <span class="struct">HasUnsafeFn</span> <span class="punctuation">{</span>
-    <span class="keyword unsafe">unsafe</span> <span class="keyword">fn</span> <span class="function declaration unsafe">unsafe_method</span><span class="punctuation">(</span><span class="punctuation">&</span><span class="self_keyword">self</span><span class="punctuation">)</span> <span class="punctuation">{</span><span class="punctuation">}</span>
+    <span class="keyword unsafe">unsafe</span> <span class="keyword">fn</span> <span class="function declaration unsafe">unsafe_method</span><span class="punctuation">(</span><span class="operator">&</span><span class="self_keyword">self</span><span class="punctuation">)</span> <span class="punctuation">{</span><span class="punctuation">}</span>
 <span class="punctuation">}</span>
 
 <span class="keyword">fn</span> <span class="function declaration">main</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
-    <span class="keyword">let</span> <span class="variable declaration">x</span> <span class="punctuation">=</span> <span class="punctuation">&</span><span class="numeric_literal">5</span> <span class="keyword">as</span> *<span class="keyword">const</span> <span class="builtin_type">usize</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="variable declaration">x</span> <span class="operator">=</span> <span class="operator">&</span><span class="numeric_literal">5</span> <span class="keyword">as</span> <span class="keyword">*</span><span class="keyword">const</span> <span class="builtin_type">usize</span><span class="punctuation">;</span>
     <span class="keyword unsafe">unsafe</span> <span class="punctuation">{</span>
         <span class="function unsafe">unsafe_fn</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
         <span class="struct">HasUnsafeFn</span><span class="punctuation">.</span><span class="function unsafe">unsafe_method</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
-        <span class="keyword">let</span> <span class="variable declaration">y</span> <span class="punctuation">=</span> <span class="operator unsafe">*</span><span class="punctuation">(</span><span class="variable">x</span><span class="punctuation">)</span><span class="punctuation">;</span>
-        <span class="keyword">let</span> <span class="variable declaration">z</span> <span class="punctuation">=</span> <span class="punctuation">-</span><span class="variable">x</span><span class="punctuation">;</span>
+        <span class="keyword">let</span> <span class="variable declaration">y</span> <span class="operator">=</span> <span class="operator unsafe">*</span><span class="punctuation">(</span><span class="variable">x</span><span class="punctuation">)</span><span class="punctuation">;</span>
+        <span class="keyword">let</span> <span class="variable declaration">z</span> <span class="operator">=</span> <span class="numeric_literal">-</span><span class="variable">x</span><span class="punctuation">;</span>
     <span class="punctuation">}</span>
 <span class="punctuation">}</span></code></pre>
\ No newline at end of file
diff --git a/crates/ra_ide/test_data/highlighting.html b/crates/ra_ide/test_data/highlighting.html
index 767e82f9d..345a2f023 100644
--- a/crates/ra_ide/test_data/highlighting.html
+++ b/crates/ra_ide/test_data/highlighting.html
@@ -35,50 +35,50 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
 
 .unresolved_reference { color: #FC5555; text-decoration: wavy underline; }
 </style>
-<pre><code><span class="punctuation">#</span><span class="punctuation">[</span><span class="function attribute">derive</span><span class="punctuation">(</span><span class="attribute">Clone</span><span class="punctuation">,</span><span class="attribute"> Debug</span><span class="punctuation">)</span><span class="punctuation">]</span>
+<pre><code><span class="attribute">#</span><span class="attribute">[</span><span class="function attribute">derive</span><span class="punctuation">(</span><span class="attribute">Clone</span><span class="punctuation">,</span><span class="attribute"> Debug</span><span class="punctuation">)</span><span class="attribute">]</span>
 <span class="keyword">struct</span> <span class="struct declaration">Foo</span> <span class="punctuation">{</span>
     <span class="keyword">pub</span> <span class="field declaration">x</span><span class="punctuation">:</span> <span class="builtin_type">i32</span><span class="punctuation">,</span>
     <span class="keyword">pub</span> <span class="field declaration">y</span><span class="punctuation">:</span> <span class="builtin_type">i32</span><span class="punctuation">,</span>
 <span class="punctuation">}</span>
 
 <span class="keyword">trait</span> <span class="trait declaration">Bar</span> <span class="punctuation">{</span>
-    <span class="keyword">fn</span> <span class="function declaration">bar</span><span class="punctuation">(</span><span class="punctuation">&</span><span class="self_keyword">self</span><span class="punctuation">)</span> <span class="punctuation">-&gt;</span> <span class="builtin_type">i32</span><span class="punctuation">;</span>
+    <span class="keyword">fn</span> <span class="function declaration">bar</span><span class="punctuation">(</span><span class="operator">&</span><span class="self_keyword">self</span><span class="punctuation">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">i32</span><span class="punctuation">;</span>
 <span class="punctuation">}</span>
 
 <span class="keyword">impl</span> <span class="trait">Bar</span> <span class="keyword">for</span> <span class="struct">Foo</span> <span class="punctuation">{</span>
-    <span class="keyword">fn</span> <span class="function declaration">bar</span><span class="punctuation">(</span><span class="punctuation">&</span><span class="self_keyword">self</span><span class="punctuation">)</span> <span class="punctuation">-&gt;</span> <span class="builtin_type">i32</span> <span class="punctuation">{</span>
+    <span class="keyword">fn</span> <span class="function declaration">bar</span><span class="punctuation">(</span><span class="operator">&</span><span class="self_keyword">self</span><span class="punctuation">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">i32</span> <span class="punctuation">{</span>
         <span class="self_keyword">self</span><span class="punctuation">.</span><span class="field">x</span>
     <span class="punctuation">}</span>
 <span class="punctuation">}</span>
 
 <span class="keyword">impl</span> <span class="struct">Foo</span> <span class="punctuation">{</span>
-    <span class="keyword">fn</span> <span class="function declaration">baz</span><span class="punctuation">(</span><span class="keyword">mut</span> <span class="self_keyword mutable">self</span><span class="punctuation">)</span> <span class="punctuation">-&gt;</span> <span class="builtin_type">i32</span> <span class="punctuation">{</span>
+    <span class="keyword">fn</span> <span class="function declaration">baz</span><span class="punctuation">(</span><span class="keyword">mut</span> <span class="self_keyword mutable">self</span><span class="punctuation">)</span> <span class="operator">-&gt;</span> <span class="builtin_type">i32</span> <span class="punctuation">{</span>
         <span class="self_keyword">self</span><span class="punctuation">.</span><span class="field">x</span>
     <span class="punctuation">}</span>
 
-    <span class="keyword">fn</span> <span class="function declaration">qux</span><span class="punctuation">(</span><span class="punctuation">&</span><span class="keyword">mut</span> <span class="self_keyword mutable">self</span><span class="punctuation">)</span> <span class="punctuation">{</span>
-        <span class="self_keyword mutable">self</span><span class="punctuation">.</span><span class="field">x</span> <span class="punctuation">=</span> <span class="numeric_literal">0</span><span class="punctuation">;</span>
+    <span class="keyword">fn</span> <span class="function declaration">qux</span><span class="punctuation">(</span><span class="operator">&</span><span class="keyword">mut</span> <span class="self_keyword mutable">self</span><span class="punctuation">)</span> <span class="punctuation">{</span>
+        <span class="self_keyword mutable">self</span><span class="punctuation">.</span><span class="field">x</span> <span class="operator">=</span> <span class="numeric_literal">0</span><span class="punctuation">;</span>
     <span class="punctuation">}</span>
 <span class="punctuation">}</span>
 
-<span class="keyword">static</span> <span class="keyword">mut</span> <span class="static declaration mutable">STATIC_MUT</span><span class="punctuation">:</span> <span class="builtin_type">i32</span> <span class="punctuation">=</span> <span class="numeric_literal">0</span><span class="punctuation">;</span>
+<span class="keyword">static</span> <span class="keyword">mut</span> <span class="static declaration mutable">STATIC_MUT</span><span class="punctuation">:</span> <span class="builtin_type">i32</span> <span class="operator">=</span> <span class="numeric_literal">0</span><span class="punctuation">;</span>
 
-<span class="keyword">fn</span> <span class="function declaration">foo</span><span class="punctuation">&lt;</span><span class="lifetime declaration">'a</span><span class="punctuation">,</span> <span class="type_param declaration">T</span><span class="punctuation">&gt;</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">-&gt;</span> <span class="type_param">T</span> <span class="punctuation">{</span>
-    <span class="function">foo</span><span class="punctuation">::</span><span class="punctuation">&lt;</span><span class="lifetime">'a</span><span class="punctuation">,</span> <span class="builtin_type">i32</span><span class="punctuation">&gt;</span><span class="punctuation">(</span><span class="punctuation">)</span>
+<span class="keyword">fn</span> <span class="function declaration">foo</span><span class="punctuation">&lt;</span><span class="lifetime declaration">'a</span><span class="punctuation">,</span> <span class="type_param declaration">T</span><span class="punctuation">&gt;</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="operator">-&gt;</span> <span class="type_param">T</span> <span class="punctuation">{</span>
+    <span class="function">foo</span><span class="operator">::</span><span class="punctuation">&lt;</span><span class="lifetime">'a</span><span class="punctuation">,</span> <span class="builtin_type">i32</span><span class="punctuation">&gt;</span><span class="punctuation">(</span><span class="punctuation">)</span>
 <span class="punctuation">}</span>
 
 <span class="macro">macro_rules!</span> <span class="macro declaration">def_fn</span> <span class="punctuation">{</span>
-    <span class="punctuation">(</span><span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>tt<span class="punctuation">:</span>tt<span class="punctuation">)</span>*<span class="punctuation">)</span> <span class="punctuation">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span><span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>tt<span class="punctuation">)</span>*<span class="punctuation">}</span>
+    <span class="punctuation">(</span><span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>tt<span class="punctuation">:</span>tt<span class="punctuation">)</span><span class="punctuation">*</span><span class="punctuation">)</span> <span class="operator">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span><span class="punctuation">$</span><span class="punctuation">(</span><span class="punctuation">$</span>tt<span class="punctuation">)</span><span class="punctuation">*</span><span class="punctuation">}</span>
 <span class="punctuation">}</span>
 
 <span class="macro">def_fn!</span> <span class="punctuation">{</span>
-    <span class="keyword">fn</span> <span class="function declaration">bar</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">-</span><span class="punctuation">&gt;</span> <span class="builtin_type">u32</span> <span class="punctuation">{</span>
+    <span class="keyword">fn</span> <span class="function declaration">bar</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="operator">-</span><span class="operator">&gt;</span> <span class="builtin_type">u32</span> <span class="punctuation">{</span>
         <span class="numeric_literal">100</span>
     <span class="punctuation">}</span>
 <span class="punctuation">}</span>
 
 <span class="macro">macro_rules!</span> <span class="macro declaration">noop</span> <span class="punctuation">{</span>
-    <span class="punctuation">(</span><span class="punctuation">$</span>expr<span class="punctuation">:</span>expr<span class="punctuation">)</span> <span class="punctuation">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span>
+    <span class="punctuation">(</span><span class="punctuation">$</span>expr<span class="punctuation">:</span>expr<span class="punctuation">)</span> <span class="operator">=</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span>
         <span class="punctuation">$</span>expr
     <span class="punctuation">}</span>
 <span class="punctuation">}</span>
@@ -87,14 +87,14 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
 <span class="keyword">fn</span> <span class="function declaration">main</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
     <span class="macro">println!</span><span class="punctuation">(</span><span class="string_literal">"Hello, {}!"</span><span class="punctuation">,</span> <span class="numeric_literal">92</span><span class="punctuation">)</span><span class="punctuation">;</span>
 
-    <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">vec</span> <span class="punctuation">=</span> <span class="unresolved_reference">Vec</span><span class="punctuation">::</span><span class="unresolved_reference">new</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">vec</span> <span class="operator">=</span> <span class="unresolved_reference">Vec</span><span class="operator">::</span><span class="unresolved_reference">new</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="keyword control">if</span> <span class="bool_literal">true</span> <span class="punctuation">{</span>
-        <span class="keyword">let</span> <span class="variable declaration">x</span> <span class="punctuation">=</span> <span class="numeric_literal">92</span><span class="punctuation">;</span>
+        <span class="keyword">let</span> <span class="variable declaration">x</span> <span class="operator">=</span> <span class="numeric_literal">92</span><span class="punctuation">;</span>
         <span class="variable mutable">vec</span><span class="punctuation">.</span><span class="unresolved_reference">push</span><span class="punctuation">(</span><span class="struct">Foo</span> <span class="punctuation">{</span> <span class="field">x</span><span class="punctuation">,</span> <span class="field">y</span><span class="punctuation">:</span> <span class="numeric_literal">1</span> <span class="punctuation">}</span><span class="punctuation">)</span><span class="punctuation">;</span>
     <span class="punctuation">}</span>
     <span class="keyword unsafe">unsafe</span> <span class="punctuation">{</span>
         <span class="variable mutable">vec</span><span class="punctuation">.</span><span class="unresolved_reference">set_len</span><span class="punctuation">(</span><span class="numeric_literal">0</span><span class="punctuation">)</span><span class="punctuation">;</span>
-        <span class="static mutable">STATIC_MUT</span> <span class="punctuation">=</span> <span class="numeric_literal">1</span><span class="punctuation">;</span>
+        <span class="static mutable">STATIC_MUT</span> <span class="operator">=</span> <span class="numeric_literal">1</span><span class="punctuation">;</span>
     <span class="punctuation">}</span>
 
     <span class="keyword control">for</span> <span class="variable declaration">e</span> <span class="keyword control">in</span> <span class="variable mutable">vec</span> <span class="punctuation">{</span>
@@ -103,11 +103,11 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
 
     <span class="macro">noop!</span><span class="punctuation">(</span><span class="macro">noop</span><span class="macro">!</span><span class="punctuation">(</span><span class="numeric_literal">1</span><span class="punctuation">)</span><span class="punctuation">)</span><span class="punctuation">;</span>
 
-    <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">x</span> <span class="punctuation">=</span> <span class="numeric_literal">42</span><span class="punctuation">;</span>
-    <span class="keyword">let</span> <span class="variable declaration mutable">y</span> <span class="punctuation">=</span> <span class="punctuation">&</span><span class="keyword">mut</span> <span class="variable mutable">x</span><span class="punctuation">;</span>
-    <span class="keyword">let</span> <span class="variable declaration">z</span> <span class="punctuation">=</span> <span class="punctuation">&</span><span class="variable mutable">y</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable">x</span> <span class="operator">=</span> <span class="numeric_literal">42</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="variable declaration mutable">y</span> <span class="operator">=</span> <span class="operator">&</span><span class="keyword">mut</span> <span class="variable mutable">x</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="variable declaration">z</span> <span class="operator">=</span> <span class="operator">&</span><span class="variable mutable">y</span><span class="punctuation">;</span>
 
-    <span class="keyword">let</span> <span class="struct">Foo</span> <span class="punctuation">{</span> <span class="field">x</span><span class="punctuation">:</span> <span class="variable declaration">z</span><span class="punctuation">,</span> <span class="field">y</span> <span class="punctuation">}</span> <span class="punctuation">=</span> <span class="struct">Foo</span> <span class="punctuation">{</span> <span class="field">x</span><span class="punctuation">:</span> <span class="variable">z</span><span class="punctuation">,</span> <span class="field">y</span> <span class="punctuation">}</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="struct">Foo</span> <span class="punctuation">{</span> <span class="field">x</span><span class="punctuation">:</span> <span class="variable declaration">z</span><span class="punctuation">,</span> <span class="field">y</span> <span class="punctuation">}</span> <span class="operator">=</span> <span class="struct">Foo</span> <span class="punctuation">{</span> <span class="field">x</span><span class="punctuation">:</span> <span class="variable">z</span><span class="punctuation">,</span> <span class="field">y</span> <span class="punctuation">}</span><span class="punctuation">;</span>
 
     <span class="variable">y</span><span class="punctuation">;</span>
 <span class="punctuation">}</span>
@@ -116,13 +116,13 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
     <span class="enum_variant declaration">Some</span><span class="punctuation">(</span><span class="type_param">T</span><span class="punctuation">)</span><span class="punctuation">,</span>
     <span class="enum_variant declaration">None</span><span class="punctuation">,</span>
 <span class="punctuation">}</span>
-<span class="keyword">use</span> <span class="enum">Option</span><span class="punctuation">::</span>*<span class="punctuation">;</span>
+<span class="keyword">use</span> <span class="enum">Option</span><span class="operator">::</span><span class="punctuation">*</span><span class="punctuation">;</span>
 
 <span class="keyword">impl</span><span class="punctuation">&lt;</span><span class="type_param declaration">T</span><span class="punctuation">&gt;</span> <span class="enum">Option</span><span class="punctuation">&lt;</span><span class="type_param">T</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span>
-    <span class="keyword">fn</span> <span class="function declaration">and</span><span class="punctuation">&lt;</span><span class="type_param declaration">U</span><span class="punctuation">&gt;</span><span class="punctuation">(</span><span class="self_keyword">self</span><span class="punctuation">,</span> <span class="value_param declaration">other</span><span class="punctuation">:</span> <span class="enum">Option</span><span class="punctuation">&lt;</span><span class="type_param">U</span><span class="punctuation">&gt;</span><span class="punctuation">)</span> <span class="punctuation">-&gt;</span> <span class="enum">Option</span><span class="punctuation">&lt;</span><span class="punctuation">(</span><span class="type_param">T</span><span class="punctuation">,</span> <span class="type_param">U</span><span class="punctuation">)</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span>
+    <span class="keyword">fn</span> <span class="function declaration">and</span><span class="punctuation">&lt;</span><span class="type_param declaration">U</span><span class="punctuation">&gt;</span><span class="punctuation">(</span><span class="self_keyword">self</span><span class="punctuation">,</span> <span class="value_param declaration">other</span><span class="punctuation">:</span> <span class="enum">Option</span><span class="punctuation">&lt;</span><span class="type_param">U</span><span class="punctuation">&gt;</span><span class="punctuation">)</span> <span class="operator">-&gt;</span> <span class="enum">Option</span><span class="punctuation">&lt;</span><span class="punctuation">(</span><span class="type_param">T</span><span class="punctuation">,</span> <span class="type_param">U</span><span class="punctuation">)</span><span class="punctuation">&gt;</span> <span class="punctuation">{</span>
         <span class="keyword control">match</span> <span class="value_param">other</span> <span class="punctuation">{</span>
-            <span class="enum_variant">None</span> <span class="punctuation">=&gt;</span> <span class="macro">unimplemented!</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">,</span>
-            <span class="variable declaration">Nope</span> <span class="punctuation">=&gt;</span> <span class="variable">Nope</span><span class="punctuation">,</span>
+            <span class="enum_variant">None</span> <span class="operator">=&gt;</span> <span class="macro">unimplemented!</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">,</span>
+            <span class="variable declaration">Nope</span> <span class="operator">=&gt;</span> <span class="variable">Nope</span><span class="punctuation">,</span>
         <span class="punctuation">}</span>
     <span class="punctuation">}</span>
 <span class="punctuation">}</span></code></pre>
\ No newline at end of file
diff --git a/crates/ra_ide/test_data/rainbow_highlighting.html b/crates/ra_ide/test_data/rainbow_highlighting.html
index 2fed04a44..08d83302c 100644
--- a/crates/ra_ide/test_data/rainbow_highlighting.html
+++ b/crates/ra_ide/test_data/rainbow_highlighting.html
@@ -36,14 +36,14 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
 .unresolved_reference { color: #FC5555; text-decoration: wavy underline; }
 </style>
 <pre><code><span class="keyword">fn</span> <span class="function declaration">main</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
-    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="8121853618659664005" style="color: hsl(261,57%,61%);">hello</span> <span class="punctuation">=</span> <span class="string_literal">"hello"</span><span class="punctuation">;</span>
-    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="2705725358298919760" style="color: hsl(17,51%,74%);">x</span> <span class="punctuation">=</span> <span class="variable" data-binding-hash="8121853618659664005" style="color: hsl(261,57%,61%);">hello</span><span class="punctuation">.</span><span class="unresolved_reference">to_string</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
-    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="3365759661443752373" style="color: hsl(127,76%,66%);">y</span> <span class="punctuation">=</span> <span class="variable" data-binding-hash="8121853618659664005" style="color: hsl(261,57%,61%);">hello</span><span class="punctuation">.</span><span class="unresolved_reference">to_string</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="8121853618659664005" style="color: hsl(261,57%,61%);">hello</span> <span class="operator">=</span> <span class="string_literal">"hello"</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="2705725358298919760" style="color: hsl(17,51%,74%);">x</span> <span class="operator">=</span> <span class="variable" data-binding-hash="8121853618659664005" style="color: hsl(261,57%,61%);">hello</span><span class="punctuation">.</span><span class="unresolved_reference">to_string</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="3365759661443752373" style="color: hsl(127,76%,66%);">y</span> <span class="operator">=</span> <span class="variable" data-binding-hash="8121853618659664005" style="color: hsl(261,57%,61%);">hello</span><span class="punctuation">.</span><span class="unresolved_reference">to_string</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
 
-    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="794745962933817518" style="color: hsl(19,74%,76%);">x</span> <span class="punctuation">=</span> <span class="string_literal">"other color please!"</span><span class="punctuation">;</span>
-    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="6717528807933952652" style="color: hsl(85,49%,84%);">y</span> <span class="punctuation">=</span> <span class="variable" data-binding-hash="794745962933817518" style="color: hsl(19,74%,76%);">x</span><span class="punctuation">.</span><span class="unresolved_reference">to_string</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="794745962933817518" style="color: hsl(19,74%,76%);">x</span> <span class="operator">=</span> <span class="string_literal">"other color please!"</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="variable declaration" data-binding-hash="6717528807933952652" style="color: hsl(85,49%,84%);">y</span> <span class="operator">=</span> <span class="variable" data-binding-hash="794745962933817518" style="color: hsl(19,74%,76%);">x</span><span class="punctuation">.</span><span class="unresolved_reference">to_string</span><span class="punctuation">(</span><span class="punctuation">)</span><span class="punctuation">;</span>
 <span class="punctuation">}</span>
 
 <span class="keyword">fn</span> <span class="function declaration">bar</span><span class="punctuation">(</span><span class="punctuation">)</span> <span class="punctuation">{</span>
-    <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable" data-binding-hash="8121853618659664005" style="color: hsl(261,57%,61%);">hello</span> <span class="punctuation">=</span> <span class="string_literal">"hello"</span><span class="punctuation">;</span>
+    <span class="keyword">let</span> <span class="keyword">mut</span> <span class="variable declaration mutable" data-binding-hash="8121853618659664005" style="color: hsl(261,57%,61%);">hello</span> <span class="operator">=</span> <span class="string_literal">"hello"</span><span class="punctuation">;</span>
 <span class="punctuation">}</span></code></pre>
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