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1 | // Created on: 1991-04-16 |
2 | // Created by: Arnaud BOUZY |
3 | // Copyright (c) 1991-1999 Matra Datavision |
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4 | // Copyright (c) 1999-2014 OPEN CASCADE SAS |
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5 | // |
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6 | // This file is part of Open CASCADE Technology software library. |
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7 | // |
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8 | // This library is free software; you can redistribute it and/or modify it under |
9 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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10 | // by the Free Software Foundation, with special exception defined in the file |
11 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
12 | // distribution for complete text of the license and disclaimer of any warranty. |
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13 | // |
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14 | // Alternatively, this file may be used under the terms of Open CASCADE |
15 | // commercial license or contractual agreement. |
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16 | |
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17 | |
18 | #include <Expr_GeneralExpression.hxx> |
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19 | #include <Expr_InvalidOperand.hxx> |
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20 | #include <Expr_NamedUnknown.hxx> |
21 | #include <Expr_PolyExpression.hxx> |
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22 | #include <Standard_DimensionMismatch.hxx> |
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23 | #include <Standard_NumericError.hxx> |
24 | #include <Standard_OutOfRange.hxx> |
25 | #include <Standard_Type.hxx> |
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26 | |
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27 | IMPLEMENT_STANDARD_RTTIEXT(Expr_PolyExpression,Expr_GeneralExpression) |
28 | |
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29 | Expr_PolyExpression::Expr_PolyExpression() |
30 | { |
31 | } |
32 | |
33 | Standard_Integer Expr_PolyExpression::NbOperands () const |
34 | { |
35 | return myOperands.Length(); |
36 | } |
37 | |
38 | void Expr_PolyExpression::SetOperand (const Handle(Expr_GeneralExpression)& exp, const Standard_Integer index) |
39 | { |
40 | Handle(Expr_PolyExpression) me = this; |
41 | if (exp == me) { |
42 | Expr_InvalidOperand::Raise(); |
43 | } |
44 | if (exp->Contains(me)) { |
45 | Expr_InvalidOperand::Raise(); |
46 | } |
47 | myOperands(index) = exp; |
48 | } |
49 | |
50 | void Expr_PolyExpression::AddOperand (const Handle(Expr_GeneralExpression)& exp) |
51 | { |
52 | myOperands.Append(exp); |
53 | } |
54 | |
55 | void Expr_PolyExpression::RemoveOperand (const Standard_Integer index) |
56 | { |
57 | if (myOperands.Length() <= 2) { |
58 | Standard_DimensionMismatch::Raise(); |
59 | } |
60 | myOperands.Remove(index); |
61 | } |
62 | |
63 | Standard_Integer Expr_PolyExpression::NbSubExpressions () const |
64 | { |
65 | return NbOperands(); |
66 | } |
67 | |
68 | const Handle(Expr_GeneralExpression)& Expr_PolyExpression::SubExpression (const Standard_Integer I) const |
69 | { |
70 | return Operand(I); |
71 | } |
72 | |
73 | Standard_Boolean Expr_PolyExpression::ContainsUnknowns () const |
74 | { |
75 | Standard_Boolean found = Standard_False; |
76 | Standard_Integer nbop = NbOperands(); |
77 | Standard_Integer i = 1; |
78 | Handle(Expr_GeneralExpression) expop; |
79 | |
80 | while ((!found) && (i <= nbop)) { |
81 | expop = Operand(i); |
82 | found = expop->IsKind(STANDARD_TYPE(Expr_NamedUnknown)); |
83 | i++; |
84 | } |
85 | i = 1; |
86 | while ((!found) && (i <= nbop)) { |
87 | expop = Operand(i); |
88 | found = expop->ContainsUnknowns(); |
89 | i++; |
90 | } |
91 | return found; |
92 | } |
93 | |
94 | Standard_Boolean Expr_PolyExpression::Contains (const Handle(Expr_GeneralExpression)& exp) const |
95 | { |
96 | Standard_Boolean found = Standard_False; |
97 | Standard_Integer nbop = NbOperands(); |
98 | Standard_Integer i = 1; |
99 | Handle(Expr_GeneralExpression) expop; |
100 | |
101 | while ((!found) && (i <= nbop)) { |
102 | expop = Operand(i); |
103 | found = (expop == exp); |
104 | i++; |
105 | } |
106 | i = 1; |
107 | while ((!found) && (i <= nbop)) { |
108 | expop = Operand(i); |
109 | found = expop->Contains(exp); |
110 | i++; |
111 | } |
112 | return found; |
113 | } |
114 | |
115 | void Expr_PolyExpression::Replace (const Handle(Expr_NamedUnknown)& var, const Handle(Expr_GeneralExpression)& with) |
116 | { |
117 | Standard_Integer nbop = NbOperands(); |
118 | Standard_Integer i; |
119 | Handle(Expr_GeneralExpression) expop; |
120 | |
121 | for(i=1;i <= nbop; i++) { |
122 | expop = Operand(i); |
123 | if (expop == var) { |
124 | SetOperand(with,i); |
125 | } |
126 | else { |
127 | if (expop->Contains(var)) { |
128 | expop->Replace(var,with); |
129 | } |
130 | } |
131 | } |
132 | } |
133 | |
134 | |
135 | Handle(Expr_GeneralExpression) Expr_PolyExpression::Simplified() const |
136 | { |
137 | Handle(Expr_PolyExpression) cop = Handle(Expr_PolyExpression)::DownCast(Copy()); |
138 | Standard_Integer i; |
139 | Standard_Integer max = cop->NbOperands(); |
140 | Handle(Expr_GeneralExpression) op; |
141 | for (i=1; i<= max; i++) { |
142 | op = cop->Operand(i); |
143 | cop->SetOperand(op->Simplified(),i); |
144 | } |
145 | return cop->ShallowSimplified(); |
146 | } |
147 | |