wip

src/Expression.h

@@ -1,8 +1,25 @@
 #ifndef EXPRESSION_H
 #define EXPRESSION_H
 
+#include "Token.h"
+
+class ExpressionInvalid;
+
 class Expression {
+public:
+    static ExpressionInvalid Invalid;
+
+    virtual std::string toString() = 0;
+};
+
+class ExpressionInvalid {
 
 };
 
+/*class ExpressionInteger: Expression {
+public:
+    ExpressionInteger(Token token);
+    std::string toString() override;
+};*/
+
 #endif