fixed printing string variable

lexer/lexerFunction.go

@@ -30,7 +30,21 @@ func ParseFunctionCall(curT Token, sec Token, lexer *Lexer) (string, []interface
 		if tok.Type == RPAREN {
 			break
 		}
-		if tok.Type == STRING {
+		if tok.Type == IDENTIFIER {
+			o, err := ParseExpression(tok, lexer)
+			if err != nil {
+				return "", nil, err
+			}
+			oo, ok := o.(string)
+			if ok {
+				args = append(args, oo)
+				// tok = lexer.NextToken()
+				continue
+			}
+
+		}
+		if tok.Type == STRING  {
+
 			args = append(args, tok.Value[1:len(tok.Value)-1])
 
 			tok = lexer.NextToken()

lexer/lexerVariable.go

@@ -21,15 +21,15 @@ func ParseVariable(curToken Token, sec Token, lexer *Lexer) (key string, value i
 		return "", nil, errors.New("var err unkown")
 	}
 	if keyT.Type != IDENTIFIER {
-		return "", nil, errors.New(fmt.Sprintf("expected an identifier, but got '%s'", keyT.Value))
+		return "", nil, fmt.Errorf("expected an identifier, but got '%s'", keyT.Value)
 	}
 	if VariableExists(keyT.Value) {
-		return "", nil, errors.New(fmt.Sprintf("'%s' is already declared", keyT.Value))
+		return "", nil, fmt.Errorf("'%s' is already declared", keyT.Value)
 	}
 	Eq := lexer.NextToken()
 	//fmt.Println(Eq)
 	if Eq.Type != ASSIGN {
-		return "", nil, errors.New(fmt.Sprintf("'=' sign is expected after the '%s'", keyT.Value))
+		return "", nil, fmt.Errorf("'=' sign is expected after the '%s'", keyT.Value)
 	}
 	valT := lexer.NextToken()
 

lexer/parseExpressionv2.go

@@ -0,0 +1,8 @@
+package lexer
+/*
+
+parse mathemetical expressions and everything else and parse function arguments too
+*/
+func ParseExpressionV2(tok Token, l *Lexer) {
+
+}