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//////////////////////////////////////////////////////////////////////////
//
// pgScript - PostgreSQL Tools
//
// Copyright (C) 2002 - 2012, The pgAdmin Development Team
// This software is released under the PostgreSQL Licence
//
//////////////////////////////////////////////////////////////////////////
#include "pgAdmin3.h"
#include "pgscript/expressions/pgsNegate.h"
#include "pgscript/objects/pgsNumber.h"
pgsNegate::pgsNegate(const pgsExpression *left) :
pgsOperation(left, 0)
{
}
pgsNegate::~pgsNegate()
{
}
pgsExpression *pgsNegate::clone() const
{
return pnew pgsNegate(*this);
}
pgsNegate::pgsNegate(const pgsNegate &that) :
pgsOperation(that)
{
}
pgsNegate &pgsNegate::operator =(const pgsNegate &that)
{
if (this != &that)
{
pgsOperation::operator=(that);
}
return (*this);
}
wxString pgsNegate::value() const
{
return wxString() << wxT("-") << m_left->value();
}
pgsOperand pgsNegate::eval(pgsVarMap &vars) const
{
// Evaluate operands
pgsOperand left(pnew pgsNumber(wxT("0"), pgsInt));
pgsOperand right(m_left->eval(vars));
// Return the result
return (*left - *right);
}
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