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https://github.com/levinsv/pgadmin3.git
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138 lines
3.3 KiB
C++
138 lines
3.3 KiB
C++
//////////////////////////////////////////////////////////////////////////
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//
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// pgScript - PostgreSQL Tools
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//
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// Copyright (C) 2002 - 2016, The pgAdmin Development Team
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// This software is released under the PostgreSQL Licence
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//
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//////////////////////////////////////////////////////////////////////////
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#ifndef PGSVARIABLE_H_
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#define PGSVARIABLE_H_
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#include "pgscript/pgScript.h"
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#include "pgscript/utilities/pgsMapm.h"
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#include "pgscript/expressions/pgsExpression.h"
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class pgsNumber;
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class pgsRecord;
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class pgsString;
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class pgsVariable : public pgsExpression
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{
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friend pgsOperand operator+(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator-(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator*(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator/(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator%(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator==(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator!=(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator<(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator>(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator<=(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator>=(const pgsVariable &lhs, const pgsVariable &rhs);
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friend pgsOperand operator!(const pgsVariable &lhs);
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friend pgsOperand operator&=(const pgsVariable &lhs, const pgsVariable &rhs);
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public:
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virtual pgsOperand pgs_plus(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_minus(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_times(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_over(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_modulo(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_equal(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_different(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_greater(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_lower(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_lower_equal(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_greater_equal(const pgsVariable &rhs) const = 0;
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virtual pgsOperand pgs_not() const = 0;
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virtual bool pgs_is_true() const = 0;
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virtual pgsOperand pgs_almost_equal(const pgsVariable &rhs) const = 0;
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public:
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enum pgsTypes
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{
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pgsTReal, pgsTInt, pgsTString, pgsTRecord
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};
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protected:
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pgsVariable(const pgsTypes &type);
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pgsTypes m_type;
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public:
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virtual ~pgsVariable();
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virtual pgsVariable *clone() const = 0;
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/* pgsVariable(const pgsVariable & that); */
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/* pgsVariable & operator =(const pgsVariable & that); */
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static MAPM num(const pgsOperand &var);
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static MAPM num(const wxString &var);
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public:
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virtual wxString value() const = 0;
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virtual pgsOperand eval(pgsVarMap &vars) const = 0;
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public:
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bool is_number() const;
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bool is_integer() const;
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bool is_real() const;
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bool is_string() const;
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bool is_record() const;
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const pgsTypes &type() const;
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public:
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virtual pgsNumber number() const = 0;
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virtual pgsRecord record() const = 0;
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virtual pgsString string() const = 0;
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};
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#endif /*PGSVARIABLE_H_*/
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