diff --git a/compiler/lexer.ts b/compiler/lexer.ts
index 982ac7f..b1e26e5 100644
--- a/compiler/lexer.ts
+++ b/compiler/lexer.ts
@@ -1,7 +1,6 @@
 import { Reporter } from "./info.ts";
 import { Pos, Token } from "./token.ts";
 
-
 export class Lexer {
     private index = 0;
     private line = 1;
@@ -77,12 +76,11 @@ export class Lexer {
                     if (this.done()) {
                         break;
                     }
-                    value +=
-                        {
-                            n: "\n",
-                            t: "\t",
-                            "0": "\0",
-                        }[this.current()] ?? this.current();
+                    value += {
+                        n: "\n",
+                        t: "\t",
+                        "0": "\0",
+                    }[this.current()] ?? this.current();
                 } else {
                     value += this.current();
                 }
@@ -132,6 +130,16 @@ export class Lexer {
                 this.step();
                 return this.token("->", pos);
             }
+            if (first === ":") {
+                if (!this.done() && this.test(":")) {
+                    this.step();
+                    if (!this.done() && this.test("<")) {
+                        this.step();
+                        return this.token("::<", pos);
+                    }
+                    return this.token("::", pos);
+                }
+            }
             return this.token(first, pos);
         }
         if (this.test("/")) {
diff --git a/editors/vim/syntax/slige.vim b/editors/vim/syntax/slige.vim
index dd6da3a..188c068 100644
--- a/editors/vim/syntax/slige.vim
+++ b/editors/vim/syntax/slige.vim
@@ -26,6 +26,8 @@ syn match Operator '>='
 syn match Operator '\.'
 syn match Operator ':'
 syn match Operator '->'
+syn match Operator '::'
+syn match Operator '::<'
 
 syn match Number '0'
 syn match Number '[1-9][0-9]*'
diff --git a/editors/vscode/syntaxes/slige.tmLanguage.json b/editors/vscode/syntaxes/slige.tmLanguage.json
index 70c5dbc..871b1aa 100644
--- a/editors/vscode/syntaxes/slige.tmLanguage.json
+++ b/editors/vscode/syntaxes/slige.tmLanguage.json
@@ -1,84 +1,84 @@
 {
-	"$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
-	"name": "Slige",
-	"patterns": [
-		{ "include": "#keywords" },
-		{ "include": "#strings" },
-		{ "include": "#numbers" },
-		{ "include": "#operators" },
-		{ "include": "#punctuation" },
-		{ "include": "#functions" },
-		{ "include": "#idents" }
-	],
-	"repository": {
-		"keywords": {
-			"patterns": [
-				{
-					"name": "keyword.control.slige",
-					"match": "\\b(break|return|let|fn|loop|if|else|struct|import|or|and|not)\\b"
-				},
-				{
-					"name": "constant.language.slige",
-					"match": "\\b(null|false|true)\\b"
-				},
-				{
-					"name": "storage.type.slige",
-					"match": "\\b(int|string|bool)\\b"
-				}
-			]
-		},
-		"strings": {
-			"name": "string.quoted.double.slige",
-			"begin": "\"",
-			"end": "\"",
-			"patterns": [
-				{
-					"name": "constant.character.escape.slige",
-					"match": "\\\\."
-				}
-			]
-		},
-		"numbers": {
-			"patterns": [
-				{
-					"name": "constant.numeric.slige",
-					"match": "\\b0\\b"
-				},
-				{
-					"name": "constant.numeric.slige",
-					"match": "\\b[1-9][0-9]*(\\.[0-9]+)?\\b"
-				},
-				{
-					"name": "constant.numeric.slige",
-					"match": "\\b0x[0-9a-fA-F]+?\\b"
-				},
-				{
-					"name": "constant.numeric.slige",
-					"match": "\\b0b[01]+?\\b"
-				}
-			]
-		},
-		"operators": {
+    "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
+    "name": "Slige",
+    "patterns": [
+        { "include": "#keywords" },
+        { "include": "#strings" },
+        { "include": "#numbers" },
+        { "include": "#operators" },
+        { "include": "#punctuation" },
+        { "include": "#functions" },
+        { "include": "#idents" }
+    ],
+    "repository": {
+        "keywords": {
             "patterns": [
                 {
-                    "match": "\\+|\\-|\\*|\\/|=|(==)|(!=)|<|>|(<=)|(>=)|\\.|:|(\\->)",
+                    "name": "keyword.control.slige",
+                    "match": "\\b(break|return|let|fn|loop|if|else|struct|import|or|and|not)\\b"
+                },
+                {
+                    "name": "constant.language.slige",
+                    "match": "\\b(null|false|true)\\b"
+                },
+                {
+                    "name": "storage.type.slige",
+                    "match": "\\b(int|string|bool)\\b"
+                }
+            ]
+        },
+        "strings": {
+            "name": "string.quoted.double.slige",
+            "begin": "\"",
+            "end": "\"",
+            "patterns": [
+                {
+                    "name": "constant.character.escape.slige",
+                    "match": "\\\\."
+                }
+            ]
+        },
+        "numbers": {
+            "patterns": [
+                {
+                    "name": "constant.numeric.slige",
+                    "match": "\\b0\\b"
+                },
+                {
+                    "name": "constant.numeric.slige",
+                    "match": "\\b[1-9][0-9]*(\\.[0-9]+)?\\b"
+                },
+                {
+                    "name": "constant.numeric.slige",
+                    "match": "\\b0x[0-9a-fA-F]+?\\b"
+                },
+                {
+                    "name": "constant.numeric.slige",
+                    "match": "\\b0b[01]+?\\b"
+                }
+            ]
+        },
+        "operators": {
+            "patterns": [
+                {
+                    "match": "\\+|\\-|\\*|\\/|=|(==)|(!=)|<|>|(<=)|(>=)|\\.|:|(\\->)|(::)|(::<)",
                     "name": "keyword.operator.slige"
                 }
             ]
         },
-		"punctuation": {
-			"patterns": [
-				{
-					"match": ";",
-					"name": "punctuation.terminator.statement.slige"
-				},
-				{
-					"match": ",",
-					"name": "punctuation.separator.delimiter.slige"
-				}
-			]
-		},
-		"functions": {
+        "punctuation": {
+            "patterns": [
+                {
+                    "match": ";",
+                    "name": "punctuation.terminator.statement.slige"
+                },
+                {
+                    "match": ",",
+                    "name": "punctuation.separator.delimiter.slige"
+                }
+            ]
+        },
+        "functions": {
             "patterns": [
                 {
                     "match": "(?>\\b[a-zA-Z_][a-zA-Z0-9_]*)\\s*(?=(?>\\:\\:<.*?>)?\\()",
@@ -86,14 +86,18 @@
                 }
             ]
         },
-		"idents": {
+        "idents": {
             "patterns": [
                 {
-                    "match": "\\b[a-zA-Z_][a-zA-Z0-9_]*\\b",
+                    "match": "\\b[a-z_][a-zA-Z0-9_]*\\b",
                     "name": "variable.other.slige"
+                },
+                {
+                    "match": "\\b[A-Z][a-zA-Z0-9_]*\\b",
+                    "name": "entity.name.type.slige"
                 }
             ]
         }
-	},
-	"scopeName": "source.slige"
-}
\ No newline at end of file
+    },
+    "scopeName": "source.slige"
+}