Add highlighting for diff markup.

Author: whitequark

examples/diff.uir

@@ -0,0 +1,31 @@
+ %0:1 = input "a"
+ %1:1 = input "b"
+ %2:2 = input "op"
+ %4:4 = not { %17 %20 %18 %19 }
+ %8:1 = and %0 %1
+ %9:1 = or %0 %1
+ %10:1 = xor %0 %1
+-%11:0 = output "o" %24
++%11:0 = output "o" %_28
+ %12:0 = name "top a" %0
+ %13:0 = name "top b" %1
+-%14:0 = name "top o" %24
++%14:0 = name "top o" %_28
+ %15:0 = name "top op" %2:2
+-%16:0 = name "top s_x" %24
++%16:0 = name "top s_x" %_28
+ %17:1 = eq %2:2 00
+ %18:1 = eq %2:2 10
+ %19:1 = eq %2:2 01
+ %20:1 = eq %2:2 11
+ %21:1 = mux %4+0 %8 0
+-%22:1 = mux %4+1 %9 %21
++%22:1 = mux %4+1 %9 %_25
+-%23:1 = mux %4+2 %10 %22
++%23:1 = mux %4+2 %10 %_26
+-%24:1 = mux %4+3 %0 %23
++%24:1 = mux %4+3 %0 %_27
++%_25:1 = mux %19 0 %8
++%_26:1 = mux %18 %_25 %9
++%_27:1 = mux %20 %_26 %10
++%_28:1 = mux %17 %_27 %0

package.json

@@ -6,7 +6,7 @@
     "author": "Catherine <[email protected]>",
     "license": "BSD-0-Clause",
     "homepage": "https://github.com/prjunnamed/",
-    "version": "0.1.0",
+    "version": "0.2.0",
     "repository": {
         "type": "git",
         "url": "https://github.com/prjunnamed/vscode-syntax.git"

syntaxes/prjunnamed.tmLanguage.json

@@ -1,15 +1,21 @@
 {
   "scopeName": "source.prjunnamed",
-  "patterns": [
-    {"include": "#comment"},
-    {"include": "#decimal"},
-    {"include": "#ternary"},
-    {"include": "#string"},
-    {"include": "#io-port"},
-    {"include": "#cell-ref"},
-    {"include": "#cell-name"}
-  ],
+  "patterns": [{"include": "#declaration"}],
   "repository": {
+    "declaration": {
+      "patterns": [
+        {"include": "#comment"},
+        {"include": "#decimal"},
+        {"include": "#ternary"},
+        {"include": "#string"},
+        {"include": "#io-port"},
+        {"include": "#cell-ref"},
+        {"include": "#cell-ref-added"},
+        {"include": "#cell-name"},
+        {"include": "#diff-added"},
+        {"include": "#diff-removed"}
+      ]
+    },
     "comment": {
       "match": ";.+",
       "name": "comment.line.prjunnamed"
@@ -30,21 +36,39 @@
       "begin": "\"",
       "end": "\"",
       "name": "string.quoted.double.prjunnamed",
-      "patterns": [{ "include": "#string-escape" }]
+      "patterns": [{"include": "#string-escape"}]
     },
     "io-port": {
       "begin": "&\"",
       "end": "(\"):\\d+",
       "name": "entity.name.io-port.prjunnamed",
-      "patterns": [{ "include": "#string-escape" }]
+      "patterns": [{"include": "#string-escape"}]
     },
     "cell-ref": {
       "match": "%\\d+(:\\d+)?(\\+\\d+)?",
-      "name": "variable.parameter.prjunnamed"
+      "name": "variable.other.prjunnamed"
+    },
+    "cell-ref-added": {
+      "match": "%_\\d+(:\\d+)?(\\+\\d+)?",
+      "name": "markup.inserted.prjunnamed"
     },
     "cell-name": {
       "match": "buf|not|and|or|xor|mux|adc|eq|ult|slt|shl|ushr|sshr|xshr|mul|udiv|umod|sdiv_trunc|sdiv_floor|smod_trunc|smod_floor|match|assign|dff|memory|iob|target|input|output|name",
       "name": "keyword.other.cell.prjunnamed"
+    },
+    "diff-added": {
+      "begin": "^\\+%_?\\d+(:\\d+)?(\\+\\d+)?",
+      "end": "\n",
+      "beginCaptures": {"0": {"name": "markup.inserted.prjunnamed"}},
+      "name": "meta.added.prjunnamed",
+      "patterns": [{"include": "#declaration"}]
+    },
+    "diff-removed": {
+      "begin": "^-%\\d+(:\\d+)?(\\+\\d+)?",
+      "end": "\n",
+      "beginCaptures": {"0": {"name": "markup.deleted.prjunnamed"}},
+      "name": "meta.removed.prjunnamed",
+      "patterns": [{"include": "#declaration"}]
     }
   }
 }