From 5bf3e949e8470a138a61c806769e1a329761cab6 Mon Sep 17 00:00:00 2001
From: Pascal Hertleif <pascal@technocreatives.com>
Date: Thu, 23 May 2019 19:42:42 +0200
Subject: Semantic highlighting spike

Very simple approach: For each identifier, set the hash of the range
where it's defined as its 'id' and use it in the VSCode extension to
generate unique colors.

Thus, the generated colors are per-file. They are also quite fragile,
and I'm not entirely sure why. Looks like we need to make sure the
same ranges aren't overwritten by a later request?
---
 .../src/snapshots/tests__highlighting.snap         | 192 +++++++++++++++++++++
 .../src/snapshots/tests__sematic_highlighting.snap |  87 ++++++++++
 2 files changed, 279 insertions(+)
 create mode 100644 crates/ra_ide_api/src/snapshots/tests__highlighting.snap
 create mode 100644 crates/ra_ide_api/src/snapshots/tests__sematic_highlighting.snap

(limited to 'crates/ra_ide_api/src/snapshots')

diff --git a/crates/ra_ide_api/src/snapshots/tests__highlighting.snap b/crates/ra_ide_api/src/snapshots/tests__highlighting.snap
new file mode 100644
index 000000000..208681f10
--- /dev/null
+++ b/crates/ra_ide_api/src/snapshots/tests__highlighting.snap
@@ -0,0 +1,192 @@
+---
+created: "2019-05-25T10:53:54.439877Z"
+creator: insta@0.8.1
+source: crates/ra_ide_api/src/syntax_highlighting.rs
+expression: result
+---
+Ok(
+    [
+        HighlightedRange {
+            range: [1; 24),
+            tag: "attribute",
+            id: None,
+        },
+        HighlightedRange {
+            range: [25; 31),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [32; 35),
+            tag: "variable",
+            id: Some(
+                461893210254723387,
+            ),
+        },
+        HighlightedRange {
+            range: [42; 45),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [46; 47),
+            tag: "variable",
+            id: Some(
+                8312289520117458465,
+            ),
+        },
+        HighlightedRange {
+            range: [49; 52),
+            tag: "text",
+            id: None,
+        },
+        HighlightedRange {
+            range: [58; 61),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [62; 63),
+            tag: "variable",
+            id: Some(
+                4497542318236667727,
+            ),
+        },
+        HighlightedRange {
+            range: [65; 68),
+            tag: "text",
+            id: None,
+        },
+        HighlightedRange {
+            range: [73; 75),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [76; 79),
+            tag: "variable",
+            id: Some(
+                4506850079084802999,
+            ),
+        },
+        HighlightedRange {
+            range: [80; 81),
+            tag: "type",
+            id: None,
+        },
+        HighlightedRange {
+            range: [80; 81),
+            tag: "variable",
+            id: Some(
+                16968185728268100018,
+            ),
+        },
+        HighlightedRange {
+            range: [88; 89),
+            tag: "type",
+            id: None,
+        },
+        HighlightedRange {
+            range: [96; 110),
+            tag: "macro",
+            id: None,
+        },
+        HighlightedRange {
+            range: [117; 127),
+            tag: "comment",
+            id: None,
+        },
+        HighlightedRange {
+            range: [128; 130),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [131; 135),
+            tag: "variable",
+            id: Some(
+                14467718814232352107,
+            ),
+        },
+        HighlightedRange {
+            range: [145; 153),
+            tag: "macro",
+            id: None,
+        },
+        HighlightedRange {
+            range: [154; 166),
+            tag: "string",
+            id: None,
+        },
+        HighlightedRange {
+            range: [168; 170),
+            tag: "literal",
+            id: None,
+        },
+        HighlightedRange {
+            range: [178; 181),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [182; 185),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [186; 189),
+            tag: "macro",
+            id: None,
+        },
+        HighlightedRange {
+            range: [197; 200),
+            tag: "macro",
+            id: None,
+        },
+        HighlightedRange {
+            range: [192; 195),
+            tag: "text",
+            id: None,
+        },
+        HighlightedRange {
+            range: [208; 211),
+            tag: "macro",
+            id: None,
+        },
+        HighlightedRange {
+            range: [212; 216),
+            tag: "macro",
+            id: None,
+        },
+        HighlightedRange {
+            range: [226; 227),
+            tag: "literal",
+            id: None,
+        },
+        HighlightedRange {
+            range: [232; 233),
+            tag: "literal",
+            id: None,
+        },
+        HighlightedRange {
+            range: [242; 248),
+            tag: "keyword.unsafe",
+            id: None,
+        },
+        HighlightedRange {
+            range: [251; 254),
+            tag: "text",
+            id: None,
+        },
+        HighlightedRange {
+            range: [255; 262),
+            tag: "text",
+            id: None,
+        },
+        HighlightedRange {
+            range: [263; 264),
+            tag: "literal",
+            id: None,
+        },
+    ],
+)
diff --git a/crates/ra_ide_api/src/snapshots/tests__sematic_highlighting.snap b/crates/ra_ide_api/src/snapshots/tests__sematic_highlighting.snap
new file mode 100644
index 000000000..3b3fe32e9
--- /dev/null
+++ b/crates/ra_ide_api/src/snapshots/tests__sematic_highlighting.snap
@@ -0,0 +1,87 @@
+---
+created: "2019-05-25T10:25:13.898113Z"
+creator: insta@0.8.1
+source: crates/ra_ide_api/src/syntax_highlighting.rs
+expression: result
+---
+Ok(
+    [
+        HighlightedRange {
+            range: [1; 3),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [4; 8),
+            tag: "variable",
+            id: Some(
+                17119830160611610240,
+            ),
+        },
+        HighlightedRange {
+            range: [17; 20),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [21; 26),
+            tag: "variable",
+            id: Some(
+                2744494144922727377,
+            ),
+        },
+        HighlightedRange {
+            range: [29; 36),
+            tag: "string",
+            id: None,
+        },
+        HighlightedRange {
+            range: [42; 45),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [46; 47),
+            tag: "variable",
+            id: Some(
+                10375904121795371996,
+            ),
+        },
+        HighlightedRange {
+            range: [50; 55),
+            tag: "variable",
+            id: Some(
+                2744494144922727377,
+            ),
+        },
+        HighlightedRange {
+            range: [56; 65),
+            tag: "text",
+            id: None,
+        },
+        HighlightedRange {
+            range: [73; 76),
+            tag: "keyword",
+            id: None,
+        },
+        HighlightedRange {
+            range: [77; 78),
+            tag: "variable",
+            id: Some(
+                8228548264153724449,
+            ),
+        },
+        HighlightedRange {
+            range: [81; 86),
+            tag: "variable",
+            id: Some(
+                2744494144922727377,
+            ),
+        },
+        HighlightedRange {
+            range: [87; 96),
+            tag: "text",
+            id: None,
+        },
+    ],
+)
-- 
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