Finally, some real progress on the AST!!

src/AST/NumberNode.h

@@ -7,4 +7,39 @@ class NumberNode : public ExprNode
   public:
     NumberNode();
     ~NumberNode();
+
+    virtual bool is_floating()
+    {
+        return false;
+    }
+    virtual bool is_integral()
+    {
+        return false;
+    }
 };
+
+template<typename T> class BasicNumberNode : public NumberNode
+{
+    T value;
+
+  public:
+    BasicNumberNode(T value) : value(value)
+    {
+    }
+    ~BasicNumberNode()
+    {
+    }
+
+    constexpr bool is_floating() override
+    {
+        return std::is_floating_point<T>::value;
+    }
+
+    constexpr bool is_integral() override
+    {
+        return std::is_integral<T>::value;
+    }
+};
+
+using IntegerNode = BasicNumberNode<int>;
+using FloatNode = BasicNumberNode<float>;

src/Parser.cpp

@@ -34,7 +34,19 @@ Parser::ErrorOr<ExprNode> Parser::walk_expr()
 
 Parser::ErrorOr<NumberNode> Parser::walk_number()
 {
-	return ErrorOr<NumberNode>(new NumberNode());
+    Token& current_token = tokens[m_index++];
+    if (current_token.tk_type == TT_Number)
+    {
+        return ErrorOr<NumberNode>(new IntegerNode(current_token.int_value));
+    }
+    else if (current_token.tk_type == TT_Float)
+    {
+        return ErrorOr<NumberNode>(new FloatNode(current_token.float_value));
+    }
+    else
+    {
+        return ErrorOr<NumberNode>("expected a number", current_token);
+    }
 }
 
 void Parser::save_current_position()