1 // Copyright: Matra-Datavision 1991
2 // File: Expr_LessThan.cxx
3 // Created: Thu Jun 13 13:50:04 1991
4 // Author: Arnaud BOUZY
7 #include <Expr_LessThan.ixx>
8 #include <Expr_NumericValue.hxx>
11 Expr_LessThan::Expr_LessThan (const Handle(Expr_GeneralExpression)& exp1, const Handle(Expr_GeneralExpression)& exp2)
14 SetSecondMember(exp2);
17 Standard_Boolean Expr_LessThan::IsSatisfied () const
19 Handle(Expr_GeneralExpression) fm = FirstMember();
20 Handle(Expr_GeneralExpression) sm = SecondMember();
21 fm = fm->Simplified();
22 sm = sm->Simplified();
23 if (fm->IsKind(STANDARD_TYPE(Expr_NumericValue))) {
24 if (sm->IsKind(STANDARD_TYPE(Expr_NumericValue))) {
25 Handle(Expr_NumericValue) nfm = Handle(Expr_NumericValue)::DownCast(fm);
26 Handle(Expr_NumericValue) nsm = Handle(Expr_NumericValue)::DownCast(sm);
27 return (nfm->GetValue() < nsm->GetValue());
30 return Standard_False;
33 Handle(Expr_GeneralRelation) Expr_LessThan::Simplified () const
35 Handle(Expr_GeneralExpression) fm = FirstMember();
36 Handle(Expr_GeneralExpression) sm = SecondMember();
37 return new Expr_LessThan(fm->Simplified(),sm->Simplified());
40 void Expr_LessThan::Simplify ()
42 Handle(Expr_GeneralExpression) fm = FirstMember();
43 Handle(Expr_GeneralExpression) sm = SecondMember();
44 SetFirstMember(fm->Simplified());
45 SetSecondMember(sm->Simplified());
48 Handle(Expr_GeneralRelation) Expr_LessThan::Copy () const
50 return new Expr_LessThan(Expr::CopyShare(FirstMember()),
51 Expr::CopyShare(SecondMember()));
54 TCollection_AsciiString Expr_LessThan::String() const
56 return FirstMember()->String() + " < " + SecondMember()->String();