chore: add operators section

src/main.YAML-tmLanguage

@@ -13,6 +13,7 @@ repository:
             - include: "#comments"
             - include: "#functions"
             - include: "#literals"
+            - include: "#operators"
 scopeName: source.parigp
 $schema: >-
   https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json

src/operators.YAML-tmLanguage

@@ -0,0 +1,39 @@
+---
+repository:
+    operators:
+        patterns:
+            -
+                match: '\b(!)'
+                captures:
+                    1:
+                        name: keyword.operator.factorial
+            -
+                match: '(&&|\|\||!\b)'
+                name: keyword.operator.logical
+            -
+                match: '(<=|>=|<|>)'
+                name: keyword.operator.comparison
+            -
+                match: '[^<>](=)'
+                name: keyword.operator.assignment
+            -
+                match: '(<<|>>)'
+                name: keyword.operator.shift
+            -
+                match: '(\-\-|\+\+)'
+                name: keyword.operator.increment-decrement
+            -
+                match: '(\-|\+|\*|\/|\\|\\/|%)'
+                name: keyword.operator.arithmetic
+            -
+                match: '(\+=|\-=|\*=|\/=|\\=|<<=|>>=)'
+                name: keyword.operator.arithmetic.assign
+            -
+                match: '(\.\.)'
+                name: keyword.operator.range
+            -
+                match: '(\~)'
+                name: keyword.operator.transpose
+            -
+                match: "[\\b\\)](\\')"
+                name: keyword.operator.derivative

tests/Operators.test.gp

@@ -0,0 +1,36 @@
+## SYNTAX TEST "source.parigp" "Operators"
+
+  (var! + 100!)
+##    ^ source.parigp keyword.operator.factorial
+##      ^ source.parigp keyword.operator.arithmetic
+##           ^ source.parigp keyword.operator.factorial
+
+  (1 && []) || (0 || "string")
+##   ^^ source.parigp keyword.operator.logical
+##          ^^ source.parigp keyword.operator.logical
+##                ^^ source.parigp keyword.operator.logical
+
+  if(!cond,,print("Bad!"));
+##   ^ source.parigp keyword.operator.logical
+
+  (1 >= 1) && (10 <= 11) || (x > 0)
+##   ^^ source.parigp keyword.operator.comparison
+##         ^^ source.parigp keyword.operator.logical
+##                ^^ source.parigp keyword.operator.comparison
+##                       ^^ source.parigp keyword.operator.logical
+##                             ^ source.parigp keyword.operator.comparison
+
+  y < 0
+##  ^ source.parigp keyword.operator.comparison
+
+  x = 10;
+##  ^ source.parigp keyword.operator.assignment
+
+  [1..100]
+##  ^^ source.parigp keyword.operator.range
+
+  [1, 2, 3; 4, 5, 6]~
+##                  ^ source.parigp keyword.operator.transpose
+
+  ('x^2 + 1)'
+##          ^ source.parigp keyword.operator.derivative