add Hover feature

syntaxes/cdl.tmLanguage.json

@@ -5,6 +5,9 @@
 		{
 			"include": "#comment"
 		},
+		{
+			"include": "#function"
+		},
 		{
 			"include": "#variables"
 		},
@@ -14,6 +17,9 @@
 		{
 			"include": "#keywords"
 		},
+		{
+			"include": "#numbers"
+		},
 		{
 			"include": "#strings"
 		}
@@ -38,6 +44,27 @@
 				}
 			]
 		},
+		"numbers": {
+			"name": "constant.numeric",
+			"patterns": [
+				{
+					"name": "constant.numeric",
+					"match": "\"\\d+\""
+				},
+				{
+					"name": "constant.numeric",
+					"match": "\"\\d+.\\d+\""
+				},
+				{
+					"name": "constant.numeric",
+					"match": "\\d+"
+				},
+				{
+					"name": "constant.numeric",
+					"match": "\\d+.\\d+"
+				}
+			]
+		},
 		"types": {
 			"patterns": [
 				{
@@ -82,6 +109,19 @@
 				}
 			]
 		},
+		"function": {
+			"patterns": [
+				{
+					"name": "storage.type.function.cdl",
+					"match": "\\bEVENT\\s+([a-zA-Z_]\\w*)\\b",
+					"captures": {
+						"1": {
+							"name": "entity.name.function"
+						}
+					}
+				}
+			]
+		},
 		"comment": {
 			"patterns": [
 				{