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pgscript/expressions/pgsNegate.cpp

@@ -0,0 +1,60 @@
+//////////////////////////////////////////////////////////////////////////
+//
+// pgScript - PostgreSQL Tools
+//
+// Copyright (C) 2002 - 2016, 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);
+}