syntax: highlight hexadecimal and octal numbers (#33)

* Highlight hexadecimal and octal numbers

* Syntaxes test: hexadecimal and octal numbers

Author: BopoH13

syntaxes/tests/numbers.bas

@@ -7,6 +7,14 @@ dec = 2.375D
 dec = 4.000
 '     ^^^^^ constant.numeric.decimal
 
+Dim hex As Long
+hex = &H98FA2
+'     ^^^^^^^ constant.numeric.hexadecimal
+
+Dim oct As Long
+oct = &O75
+'     ^^^^ constant.numeric.octal
+
 Dim dub As Double
 '          ^^^^^^ support.type.Double
 dub = 4.0R

syntaxes/vba.tmLanguage.json

@@ -42,13 +42,21 @@
 		},
 		"numbers": {
 			"patterns": [
+				{
+					"name": "constant.numeric.hexadecimal",
+					"match": "(?i)&H[0-9A-F]+"
+				},
+				{
+					"name": "constant.numeric.octal",
+					"match": "(?i)&O[0-7]+"
+				},
 				{
 					"name": "constant.numeric.decimal",
-					"match": "([0-9]+)(\\.)([0-9]+)(D|R|F)?"
+					"match": "[0-9]+\\.[0-9]+(D|R|F)?"
 				},
 				{
 					"name": "constant.numeric.integer",
-					"match": "(([0-9]+)([_]?))+(ui|UI|ul|UL|us|US)?"
+					"match": "(?i)([0-9]+[_]?)+(UI|UL|US)?"
 				}
 			]
 		},