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1 -- C3900051.A
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2 --
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3 -- Grant of Unlimited Rights
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4 --
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5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
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6 -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
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7 -- unlimited rights in the software and documentation contained herein.
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8 -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
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9 -- this public release, the Government intends to confer upon all
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10 -- recipients unlimited rights equal to those held by the Government.
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11 -- These rights include rights to use, duplicate, release or disclose the
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12 -- released technical data and computer software in whole or in part, in
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13 -- any manner and for any purpose whatsoever, and to have or permit others
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14 -- to do so.
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15 --
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16 -- DISCLAIMER
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17 --
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18 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
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19 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
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20 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
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21 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
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22 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
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23 -- PARTICULAR PURPOSE OF SAID MATERIAL.
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24 --*
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25 --
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26 -- OBJECTIVE:
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27 -- See C3900053.AM.
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28 --
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29 -- TEST DESCRIPTION:
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30 -- See C3900053.AM.
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31 --
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32 -- TEST FILES:
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33 -- This test consists of the following files:
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34 --
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35 -- C3900050.A
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36 -- => C3900051.A
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37 -- C3900052.A
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38 -- C3900053.AM
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39 --
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40 -- CHANGE HISTORY:
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41 -- 06 Dec 94 SAIC ACVC 2.0
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42 -- 15 May 96 SAIC ACVC 2.1: Modified prologue. Added pragma Elaborate
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43 -- for Ada.Calendar.
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44 --
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45 --!
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46
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47 with C3900050; -- Alert system abstraction.
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48 package C3900051 is -- Extended alert system abstraction.
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49
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50
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51 type Low_Alert_Type is new C3900050.Alert_Type
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52 with private; -- Private extension of
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53 -- root tagged type.
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54
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55 -- Inherits procedure Display from Alert_Type.
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56
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57 procedure Handle (LA : in out Low_Alert_Type); -- Override parent's
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58 -- primitive subprog.
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59
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60 procedure Set_Level (LA : in out Low_Alert_Type; -- To be inherited by
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61 L : in Integer); -- all derivatives.
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62
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63
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64 -- The following functions are needed to verify the values of the
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65 -- extension's private components.
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66
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67 function Get_Level (LA: Low_Alert_Type) return Integer;
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68
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69 function Initial_Values_Okay (LA : in Low_Alert_Type)
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70 return Boolean; -- Override parent's
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71 -- primitive subprog.
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72
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73 function Bad_Final_Values (LA : in Low_Alert_Type) -- Override parent's
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74 return Boolean; -- primitive subprog.
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75
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76
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77 private
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78
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79 type Low_Alert_Type is new C3900050.Alert_Type with record
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80 Level : Integer := 0;
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81 end record;
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82
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83 end C3900051;
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84
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85
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86 --==================================================================--
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87
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88
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89 with Ada.Calendar;
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90 pragma Elaborate (Ada.Calendar);
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91
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92 package body C3900051 is -- Extended alert system abstraction.
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93
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94 use C3900050; -- Alert system abstraction.
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95
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96
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97 procedure Set_Level (LA : in out Low_Alert_Type;
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98 L : in Integer) is
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99 begin
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100 LA.Level := L;
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101 end Set_Level;
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102
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103
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104 procedure Handle (LA : in out Low_Alert_Type) is
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105 begin
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106 Handle (Alert_Type (LA)); -- Call parent's operation (type conversion).
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107 Set_Level (LA, 1); -- Call newly declared operation.
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108 Set_Display (Alert_Type(LA),
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109 Teletype); -- Call parent's operation (type conversion).
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110 Display (LA);
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111 end Handle;
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112
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113
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114 function Get_Level (LA: Low_Alert_Type) return Integer is
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115 begin
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116 return LA.Level;
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117 end Get_Level;
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118
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119
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120 function Initial_Values_Okay (LA : in Low_Alert_Type) return Boolean is
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121 begin
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122 -- Call parent's operation (type conversion).
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123 return (Initial_Values_Okay (Alert_Type (LA)) and
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124 LA.Level = 0);
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125 end Initial_Values_Okay;
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126
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127
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128 function Bad_Final_Values (LA : in Low_Alert_Type) return Boolean is
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129 use type Ada.Calendar.Time;
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130 begin
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131 return (Get_Time(LA) /= Alert_Time or
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132 Get_Display(LA) /= Teletype or
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133 LA.Level /= 1);
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134 end Bad_Final_Values;
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135
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136
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137 end C3900051;
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