59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
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#ifndef SQLASTNODE_H
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#define SQLASTNODE_H
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#include <memory>
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#include <string>
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namespace SqlAst {
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class Node {
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public:
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Node();
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//virtual Node* Clone() const = 0;
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};
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class DDLNode: public Node {
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};
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class CreateTable: public Node {
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};
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// Is there a benefit for having a common base for crud operations???
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class CrudNode: public Node {
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};
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class Insert: public CrudNode {
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};
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/** Class for representing an identifier.
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*
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* This can still be multiple things like:
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* - name of alias, schema, table and or column
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* - name of function
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* - predefined symbol like LOCAL_TIME
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*
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* During parsing this cannot always be determined as an alias might be involved that hasn't been parsed yet
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* so we put a Identifier in the AST a follow up pass could determine what it actually as and act appropriatly
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*
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* An identifier can consist of following fields
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* - [[schema.]table.]column
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* - [alias.]column
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* - [schema.]table.function (for function taking a row of type table)
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* - alias.function (for function taking a row of type table)
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* - schema.function
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* - sql symbol like CURRENT_DATE
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*/
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class Identifier: public Node {
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};
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}
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#endif // SQLASTNODE_H
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