added "switch-case" statement

Author: bas1c1

SourceCode/Parser/Parser.cs

@@ -89,6 +89,10 @@ private Statement statement()
             {
                 return new ReturnStatement(expression());
             }
+            if (match(TokenType.SWITCH))
+            {
+                return switchs();
+            }
             if (match(TokenType.USE))
             {
                 return new UseStatement(expression().ToString());
@@ -152,6 +156,22 @@ private FunctionDefine functionDefine()
             return new FunctionDefine(name, argNames, body);
         }
 
+        private Statement switchs()
+        {
+            Expression expr = expression();
+            List<CaseStatement> caseStatements = new List<CaseStatement>();
+            consume(TokenType.LBRACE);
+            
+            while (!(match(TokenType.RBRACE)))
+            {
+                consume(TokenType.CASE);
+                Expression curr = expression();
+                caseStatements.Add(new CaseStatement(curr, expr, block()));
+            }
+
+            return new SwitchStatement(caseStatements);
+        }
+
         private Statement enums()
         {
             string name = consume(TokenType.WORD).getText();