wip

pglablib/sqlast/NodeVisitor.h

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+#pragma once
+
+namespace sqlast {
+
+    class SelectItem;
+    class SelectList;
+    class SelectStatement;
+    class StatementList;
+    class StringLiteral;
+
+    class NodeVisitor
+    {
+    public:
+        virtual ~NodeVisitor() = default;
+
+        virtual void Visit(SelectItem &selectItem) = 0;
+        virtual void Visit(SelectList &selectList) = 0;
+        virtual void Visit(SelectStatement &selectStatement) = 0;
+        virtual void Visit(StatementList &statementList) = 0;
+        virtual void Visit(StringLiteral &stringLiteral) = 0;
+
+    protected:
+        void VisitSelectListItems(SelectList &selectList);
+
+    };
+
+}