diff options
Diffstat (limited to 'storage/ndb/src/old_files/client/odbc/codegen/Code_expr_const.hpp')
-rw-r--r-- | storage/ndb/src/old_files/client/odbc/codegen/Code_expr_const.hpp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/storage/ndb/src/old_files/client/odbc/codegen/Code_expr_const.hpp b/storage/ndb/src/old_files/client/odbc/codegen/Code_expr_const.hpp new file mode 100644 index 00000000000..2e26c637a23 --- /dev/null +++ b/storage/ndb/src/old_files/client/odbc/codegen/Code_expr_const.hpp @@ -0,0 +1,120 @@ +/* Copyright (C) 2003 MySQL AB + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#ifndef ODBC_CODEGEN_Code_expr_const_hpp +#define ODBC_CODEGEN_Code_expr_const_hpp + +#include <common/common.hpp> +#include <common/DataField.hpp> +#include "Code_expr.hpp" + +/** + * @class Plan_expr_const + * @brief Constant expression value in PlanTree + */ +class Plan_expr_const : public Plan_expr { +public: + Plan_expr_const(Plan_root* root, LexType lexType, const char* value); + virtual ~Plan_expr_const(); + Plan_base* analyze(Ctx& ctx, Ctl& ctl); + Exec_base* codegen(Ctx& ctx, Ctl& ctl); + void print(Ctx& ctx); + bool isEqual(const Plan_expr* expr) const; + bool isGroupBy(const Plan_expr_row* row) const; +protected: + // lexical type and token set by the parser + LexType m_lexType; + BaseString m_string; +}; + +inline +Plan_expr_const::Plan_expr_const(Plan_root* root, LexType lexType, const char* value) : + Plan_expr(root, TypeConst), + m_lexType(lexType), + m_string(value) +{ +} + +/** + * @class Exec_expr_const + * @brief Constant expression value in ExecTree + */ +class Exec_expr_const : public Exec_expr { +public: + class Code : public Exec_expr::Code { + public: + Code(const SqlField& sqlField); + virtual ~Code(); + protected: + friend class Exec_expr_const; + const SqlField m_sqlField; + }; + class Data : public Exec_expr::Data { + public: + Data(SqlField& sqlField); + virtual ~Data(); + protected: + friend class Exec_expr_const; + SqlField m_sqlField; + }; + Exec_expr_const(Exec_root* root); + virtual ~Exec_expr_const(); + void alloc(Ctx& ctx, Ctl& ctl); + void evaluate(Ctx& ctx, Ctl& ctl); + void close(Ctx& ctx); + void print(Ctx& ctx); + // children + const Code& getCode() const; + Data& getData() const; +}; + +inline +Exec_expr_const::Code::Code(const SqlField& sqlField) : + Exec_expr::Code(m_sqlField.sqlSpec()), + m_sqlField(sqlField) +{ +} + +inline +Exec_expr_const::Data::Data(SqlField& sqlField) : + Exec_expr::Data(m_sqlField), + m_sqlField(sqlField) +{ +} + +inline +Exec_expr_const::Exec_expr_const(Exec_root* root) : + Exec_expr(root) +{ +} + +// children + +inline const Exec_expr_const::Code& +Exec_expr_const::getCode() const +{ + const Code* code = static_cast<const Code*>(m_code); + return *code; +} + +inline Exec_expr_const::Data& +Exec_expr_const::getData() const +{ + Data* data = static_cast<Data*>(m_data); + return *data; +} + +#endif |