From e09723f0afb3f86da046bd58026427e587d0ce10 Mon Sep 17 00:00:00 2001
From: Lukas Wirth <lukastw97@gmail.com>
Date: Fri, 11 Jun 2021 21:19:19 +0200
Subject: [PATCH] Highlight tuple field accesses correctly

---
 crates/ide/src/syntax_highlighting/highlight.rs               | 3 +++
 .../ide/src/syntax_highlighting/test_data/highlighting.html   | 4 ++--
 crates/ide/src/syntax_highlighting/tests.rs                   | 4 ++--
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/crates/ide/src/syntax_highlighting/highlight.rs b/crates/ide/src/syntax_highlighting/highlight.rs
index 9503c936d1..84012227d8 100644
--- a/crates/ide/src/syntax_highlighting/highlight.rs
+++ b/crates/ide/src/syntax_highlighting/highlight.rs
@@ -131,6 +131,9 @@ pub(super) fn element(
         }
         STRING | BYTE_STRING => HlTag::StringLiteral.into(),
         ATTR => HlTag::Attribute.into(),
+        INT_NUMBER if element.ancestors().nth(1).map_or(false, |it| it.kind() == FIELD_EXPR) => {
+            SymbolKind::Field.into()
+        }
         INT_NUMBER | FLOAT_NUMBER => HlTag::NumericLiteral.into(),
         BYTE => HlTag::ByteLiteral.into(),
         CHAR => HlTag::CharLiteral.into(),
diff --git a/crates/ide/src/syntax_highlighting/test_data/highlighting.html b/crates/ide/src/syntax_highlighting/test_data/highlighting.html
index a7b5c3b895..59f1e8e4cc 100644
--- a/crates/ide/src/syntax_highlighting/test_data/highlighting.html
+++ b/crates/ide/src/syntax_highlighting/test_data/highlighting.html
@@ -215,8 +215,8 @@ pre                 { color: #DCDCCC; background: #3F3F3F; font-size: 22px; padd
     <span class="keyword">let</span> <span class="variable callable declaration">a</span> <span class="operator">=</span> <span class="punctuation">|</span><span class="value_param declaration">x</span><span class="punctuation">|</span> <span class="value_param">x</span><span class="semicolon">;</span>
     <span class="keyword">let</span> <span class="variable callable declaration">bar</span> <span class="operator">=</span> <span class="struct">Foo</span><span class="operator">::</span><span class="function associated">baz</span><span class="semicolon">;</span>
 
-    <span class="keyword">let</span> <span class="variable declaration">baz</span> <span class="operator">=</span> <span class="numeric_literal">-</span><span class="numeric_literal">42</span><span class="semicolon">;</span>
-    <span class="keyword">let</span> <span class="variable declaration">baz</span> <span class="operator">=</span> <span class="operator">-</span><span class="variable">baz</span><span class="semicolon">;</span>
+    <span class="keyword">let</span> <span class="variable declaration">baz</span> <span class="operator">=</span> <span class="parenthesis">(</span><span class="numeric_literal">-</span><span class="numeric_literal">42</span><span class="comma">,</span><span class="parenthesis">)</span><span class="semicolon">;</span>
+    <span class="keyword">let</span> <span class="variable declaration">baz</span> <span class="operator">=</span> <span class="operator">-</span><span class="variable">baz</span><span class="operator">.</span><span class="field">0</span><span class="semicolon">;</span>
 
     <span class="keyword">let</span> <span class="punctuation">_</span> <span class="operator">=</span> <span class="logical">!</span><span class="bool_literal">true</span><span class="semicolon">;</span>
 
diff --git a/crates/ide/src/syntax_highlighting/tests.rs b/crates/ide/src/syntax_highlighting/tests.rs
index 6ad2a362a6..f7d8334a00 100644
--- a/crates/ide/src/syntax_highlighting/tests.rs
+++ b/crates/ide/src/syntax_highlighting/tests.rs
@@ -189,8 +189,8 @@ fn main() {
     let a = |x| x;
     let bar = Foo::baz;
 
-    let baz = -42;
-    let baz = -baz;
+    let baz = (-42,);
+    let baz = -baz.0;
 
     let _ = !true;