ready to merge docs

include/ast/statement_astnode.h

@@ -8,34 +8,43 @@ class Statement_ASTNode : public ASTNodeBase {
   virtual ~Statement_ASTNode() = default;
 };
 
-class EmptyStatement_ASTNode : public Statement_ASTNode {};
+class EmptyStatement_ASTNode : public Statement_ASTNode {
+  friend Visitor;
+};
 class DefinitionStatement_ASTNode : public Statement_ASTNode {
-  ExprTypeInfo type;
+  friend Visitor;
+  ExprTypeInfo var_type;
   std::vector<std::pair<IdentifierType, std::shared_ptr<Expr_ASTNode>>> vars;
 };
 class ExprStatement_ASTNode : public Statement_ASTNode {
+  friend Visitor;
   std::shared_ptr<Expr_ASTNode> expr;
 };
 class IfStatement_ASTNode : public Statement_ASTNode {
+  friend Visitor;
   bool has_else_clause;
   std::shared_ptr<Expr_ASTNode> condition;
   std::shared_ptr<Statement_ASTNode> if_clause;
   std::shared_ptr<Statement_ASTNode> else_clause;
 };
 class WhileStatement_ASTNode : public Statement_ASTNode {
+  friend Visitor;
   std::shared_ptr<Expr_ASTNode> condition;
   std::shared_ptr<Statement_ASTNode> loop_body;
 };
 class ForStatement_ASTNode : public Statement_ASTNode {
+  friend Visitor;
   std::shared_ptr<Statement_ASTNode> initial;
   std::shared_ptr<Expr_ASTNode> condition;
   std::shared_ptr<Statement_ASTNode> update;
   std::shared_ptr<Statement_ASTNode> loop_body;
 };
 class JmpStatement_ASTNode : public Statement_ASTNode {
+  friend Visitor;
   std::shared_ptr<Expr_ASTNode> return_value;
 };
 class SuiteStatement_ASTNode : public Statement_ASTNode {
+  friend Visitor;
   std::vector<std::shared_ptr<Statement_ASTNode>> statements;
 };