60 lines
846 B
C
60 lines
846 B
C
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/*
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* Statement.h
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* Definition of the structure used to build the syntax tree.
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*/
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#ifndef __STATEMENT_H__
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#define __STATEMENT_H__
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#include "Expression.h"
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#include "List.h"
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class TableRef;
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typedef enum {
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eSelect,
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eDelete,
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eInsert,
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eCreate
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} EStatementType;
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class Statement {
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public:
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Statement(EStatementType type);
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EStatementType _type;
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};
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class SelectStatement : public Statement {
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public:
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SelectStatement();
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TableRef* _from_table;
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List<Expression*>* _select_list;
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List<Expression*>* _group_by;
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};
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/**
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* TableRef
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* Holds reference to tables. Can be either table names or a select statement.
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*/
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typedef enum {
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eTableName,
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eTableSelect
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} ETableRefType;
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class TableRef {
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public:
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TableRef(ETableRefType type);
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ETableRefType _type;
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SelectStatement* _stmt;
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List<char*>* _table_names;
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};
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#endif // __STATEMENT_H__
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