doc/html/ada/terminal_interface-curses-forms-field_types__adb.htm

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   5 <FONT COLOR=green><EM>------------------------------------------------------------------------------</EM></FONT>
   6 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
   7 <FONT COLOR=green><EM>--                           <A HREF="http://www.gnat.com">GNAT</A> ncurses Binding                           --</EM></FONT>
   8 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
   9 <FONT COLOR=green><EM>--                 Terminal_Interface.Curses.Forms.Field_Types              --</EM></FONT>
  10 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
  11 <FONT COLOR=green><EM>--                                 B O D Y                                  --</EM></FONT>
  12 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
  13 <FONT COLOR=green><EM>------------------------------------------------------------------------------</EM></FONT>
  14 <FONT COLOR=green><EM>-- Copyright (c) 1998 Free Software Foundation, Inc.                        --</EM></FONT>
  15 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
  16 <FONT COLOR=green><EM>-- Permission is hereby granted, free of charge, to any person obtaining a  --</EM></FONT>
  17 <FONT COLOR=green><EM>-- copy of this software and associated documentation files (the            --</EM></FONT>
  18 <FONT COLOR=green><EM>-- "Software"), to deal in the Software without restriction, including      --</EM></FONT>
  19 <FONT COLOR=green><EM>-- without limitation the rights to use, copy, modify, merge, publish,      --</EM></FONT>
  20 <FONT COLOR=green><EM>-- distribute, distribute with modifications, sublicense, and/or sell       --</EM></FONT>
  21 <FONT COLOR=green><EM>-- copies of the Software, and to permit persons to whom the Software is    --</EM></FONT>
  22 <FONT COLOR=green><EM>-- furnished to do so, subject to the following conditions:                 --</EM></FONT>
  23 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
  24 <FONT COLOR=green><EM>-- The above copyright notice and this permission notice shall be included  --</EM></FONT>
  25 <FONT COLOR=green><EM>-- in all copies or substantial portions of the Software.                   --</EM></FONT>
  26 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
  27 <FONT COLOR=green><EM>-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  --</EM></FONT>
  28 <FONT COLOR=green><EM>-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               --</EM></FONT>
  29 <FONT COLOR=green><EM>-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   --</EM></FONT>
  30 <FONT COLOR=green><EM>-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   --</EM></FONT>
  31 <FONT COLOR=green><EM>-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    --</EM></FONT>
  32 <FONT COLOR=green><EM>-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    --</EM></FONT>
  33 <FONT COLOR=green><EM>-- THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               --</EM></FONT>
  34 <FONT COLOR=green><EM>--                                                                          --</EM></FONT>
  35 <FONT COLOR=green><EM>-- Except as contained in this notice, the name(s) of the above copyright   --</EM></FONT>
  36 <FONT COLOR=green><EM>-- holders shall not be used in advertising or otherwise to promote the     --</EM></FONT>
  37 <FONT COLOR=green><EM>-- sale, use or other dealings in this Software without prior written       --</EM></FONT>
  38 <FONT COLOR=green><EM>-- authorization.                                                           --</EM></FONT>
  39 <FONT COLOR=green><EM>------------------------------------------------------------------------------</EM></FONT>
  40 <FONT COLOR=green><EM>--  Author: <A HREF="http://home.t-online.de/home/Juergen.Pfeifer">J&uuml;rgen Pfeifer</A> &lt;<A HREF="mailto:juergen.pfeifer@gmx.net">&lt;juergen.pfeifer@gmx.net&gt;</A>&gt; 1996</EM></FONT>
  41 <FONT COLOR=green><EM>--  Version Control:</EM></FONT>
  42 <FONT COLOR=green><EM>--  @Revision: 1.12 @</EM></FONT>
  43 <FONT COLOR=green><EM>--  Binding Version 01.00</EM></FONT>
  44 <FONT COLOR=green><EM>------------------------------------------------------------------------------</EM></FONT>
  45 <b>with</b> <A HREF="interfac__ads.htm#23_9">Interfaces</A>.C;
  46 <b>with</b> <A HREF="terminal_interface__ads.htm#41_9">Terminal_Interface</A>.<A HREF="terminal_interface-curses__ads.htm#48_28">Curses</A>.<A HREF="terminal_interface-curses-aux__ads.htm#50_35">Aux</A>; <b>use</b> <A HREF="terminal_interface__ads.htm#41_9">Terminal_Interface</A>.<A HREF="terminal_interface-curses__ads.htm#48_28">Curses</A>.<A HREF="terminal_interface-curses-aux__ads.htm#50_35">Aux</A>;
  47 <b>with</b> Ada.Unchecked_Deallocation;
  48 <b>with</b> Ada.Unchecked_Conversion;
  49 <FONT COLOR=green><EM>--  |</EM></FONT>
  50 <FONT COLOR=green><EM>--  |=====================================================================</EM></FONT>
  51 <FONT COLOR=green><EM>--  | man page form_fieldtype.3x</EM></FONT>
  52 <FONT COLOR=green><EM>--  |=====================================================================</EM></FONT>
  53 <FONT COLOR=green><EM>--  |</EM></FONT>
  54 <b>package</b> <b>body</b> Terminal_Interface.Curses.Forms.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#43_41">Field_Types</A><FONT COLOR=red><A NAME="50_46"></A></FONT> <b>is</b>
  55
  56    <b>use</b> <b>type</b> <A HREF="interfac__ads.htm#23_9">Interfaces</A>.C.int;
  57    <b>use</b> <b>type</b> System.Address;
  58
  59    <b>function</b> <FONT COLOR=red><A NAME="55_13">To_Argument_Access</A></FONT> <b>is</b> <b>new</b> Ada.Unchecked_Conversion
  60      (System.Address, Argument_Access);
  61
  62    <b>function</b> <FONT COLOR=red><A NAME="58_13">Get_Fieldtype</A></FONT> (<FONT COLOR=red><A NAME="58_28">F</A></FONT> : <A HREF="terminal_interface-curses-forms__ads.htm#55_9">Field</A>) <b>return</b> C_Field_Type;
  63    <b>pragma</b> Import (C, <A HREF="terminal_interface-curses-forms-field_types__adb.htm#58_13">Get_Fieldtype</A>, "field_type");
  64
  65    <b>function</b> <FONT COLOR=red><A NAME="61_13">Get_Arg</A></FONT> (<FONT COLOR=red><A NAME="61_22">F</A></FONT> : <A HREF="terminal_interface-curses-forms__ads.htm#55_9">Field</A>) <b>return</b> System.Address;
  66    <b>pragma</b> Import (C, <A HREF="terminal_interface-curses-forms-field_types__adb.htm#61_13">Get_Arg</A>, "field_arg");
  67    <FONT COLOR=green><EM>--  |</EM></FONT>
  68    <FONT COLOR=green><EM>--  |=====================================================================</EM></FONT>
  69    <FONT COLOR=green><EM>--  | man page form_field_validation.3x</EM></FONT>
  70    <FONT COLOR=green><EM>--  |=====================================================================</EM></FONT>
  71    <FONT COLOR=green><EM>--  |</EM></FONT>
  72    <FONT COLOR=green><EM>--  |</EM></FONT>
  73    <FONT COLOR=green><EM>--  |</EM></FONT>
  74    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#79_13">Get_Type</A><FONT COLOR=red><A NAME="70_13"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#79_23">Fld</A> : <b>in</b> <A HREF="terminal_interface-curses-forms__ads.htm#55_9">Field</A>) <b>return</b> Field_Type_Access
  75    <b>is</b>
  76       Low_Level : <b>constant</b> C_Field_Type := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#58_13">Get_Fieldtype</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#79_23">Fld</A>);
  77       Arg : Argument_Access;
  78    <b>begin</b>
  79       <b>if</b> Low_Level = Null_Field_Type <b>then</b>
  80          <b>return</b> <b>null</b>;
  81       <b>else</b>
  82          <b>if</b> Low_Level = M_Builtin_Router <b>or</b> <b>else</b>
  83            Low_Level = M_Generic_Type <b>or</b> <b>else</b>
  84            Low_Level = M_Choice_Router <b>or</b> <b>else</b>
  85            Low_Level = M_Generic_Choice <b>then</b>
  86             Arg := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#55_13">To_Argument_Access</A> (<A HREF="terminal_interface-curses-forms-field_types__adb.htm#61_13">Get_Arg</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#79_23">Fld</A>));
  87             <b>if</b> Arg = <b>null</b> <b>then</b>
  88                <b>raise</b> <A HREF="terminal_interface-curses-forms__ads.htm#288_4">Form_Exception</A>;
  89             <b>else</b>
  90                <b>return</b> Arg.Typ;
  91             <b>end</b> <b>if</b>;
  92          <b>else</b>
  93             <b>raise</b> <A HREF="terminal_interface-curses-forms__ads.htm#288_4">Form_Exception</A>;
  94          <b>end</b> <b>if</b>;
  95       <b>end</b> <b>if</b>;
  96    <b>end</b> Get_Type;
  97
  98    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#162_13">Make_Arg</A><FONT COLOR=red><A NAME="94_13"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#162_23">Args</A> : System.Address) <b>return</b> System.Address
  99    <b>is</b>
 100       <FONT COLOR=green><EM>--  Actually args is a double indirected pointer to the arguments</EM></FONT>
 101       <FONT COLOR=green><EM>--  of a C variable argument list. In theory it is now quite</EM></FONT>
 102       <FONT COLOR=green><EM>--  complicated to write portable routine that reads the arguments,</EM></FONT>
 103       <FONT COLOR=green><EM>--  because one has to know the growth direction of the stack and</EM></FONT>
 104       <FONT COLOR=green><EM>--  the sizes of the individual arguments.</EM></FONT>
 105       <FONT COLOR=green><EM>--  Fortunately we are only interested in the first argument (#0),</EM></FONT>
 106       <FONT COLOR=green><EM>--  we know its size and for the first arg we don't care about</EM></FONT>
 107       <FONT COLOR=green><EM>--  into which stack direction we have to proceed. We simply</EM></FONT>
 108       <FONT COLOR=green><EM>--  resolve the double indirection and thats it.</EM></FONT>
 109       <b>type</b> V <b>is</b> <b>access</b> <b>all</b> System.Address;
 110       <b>function</b> <FONT COLOR=red><A NAME="106_16">To_Access</A></FONT> <b>is</b> <b>new</b> Ada.Unchecked_Conversion (System.Address,
 111                                                           V);
 112    <b>begin</b>
 113       <b>return</b> <A HREF="terminal_interface-curses-forms-field_types__adb.htm#106_16">To_Access</A> (<A HREF="terminal_interface-curses-forms-field_types__adb.htm#106_16">To_Access</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#162_23">Args</A>).<b>all</b>).<b>all</b>;
 114    <b>end</b> Make_Arg;
 115
 116    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#167_13">Copy_Arg</A><FONT COLOR=red><A NAME="112_13"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#167_23">Usr</A> : System.Address) <b>return</b> System.Address
 117    <b>is</b>
 118    <b>begin</b>
 119       <b>return</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#167_23">Usr</A>;
 120    <b>end</b> Copy_Arg;
 121
 122    <b>procedure</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#172_14">Free_Arg</A><FONT COLOR=red><A NAME="118_14"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#172_24">Usr</A> : <b>in</b> System.Address)
 123    <b>is</b>
 124       <b>procedure</b> <FONT COLOR=red><A NAME="120_17">Free_Type</A></FONT> <b>is</b> <b>new</b> Ada.Unchecked_Deallocation
 125         (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#52_9">Field_Type</A>'Class, Field_Type_Access);
 126       <b>procedure</b> <FONT COLOR=red><A NAME="122_17">Freeargs</A></FONT> <b>is</b> <b>new</b> Ada.Unchecked_Deallocation
 127         (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#211_9">Argument</A>, Argument_Access);
 128
 129       To_Be_Free : Argument_Access := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#55_13">To_Argument_Access</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#172_24">Usr</A>);
 130       Low_Level  : C_Field_Type;
 131    <b>begin</b>
 132       <b>if</b> To_Be_Free /= <b>null</b> <b>then</b>
 133          <b>if</b> To_Be_Free.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#213_7">Usr</A> /= System.Null_Address <b>then</b>
 134             Low_Level := To_Be_Free.Cft;
 135             <b>if</b> Low_Level.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#126_10">Freearg</A> /= <b>null</b> <b>then</b>
 136                Low_Level.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#126_10">Freearg</A> (To_Be_Free.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#213_7">Usr</A>);
 137             <b>end</b> <b>if</b>;
 138          <b>end</b> <b>if</b>;
 139          <b>if</b> To_Be_Free.Typ /= <b>null</b> <b>then</b>
 140             <A HREF="terminal_interface-curses-forms-field_types__adb.htm#120_17">Free_Type</A> (To_Be_Free.Typ);
 141          <b>end</b> <b>if</b>;
 142          <A HREF="terminal_interface-curses-forms-field_types__adb.htm#122_17">Freeargs</A> (To_Be_Free);
 143       <b>end</b> <b>if</b>;
 144    <b>end</b> Free_Arg;
 145
 146
 147    <b>procedure</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#151_14">Wrap_Builtin</A><FONT COLOR=red><A NAME="143_14"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#151_28">Fld</A> : <A HREF="terminal_interface-curses-forms__ads.htm#55_9">Field</A>;
 148                            <A HREF="terminal_interface-curses-forms-field_types__ads.htm#152_28">Typ</A> : <A HREF="terminal_interface-curses-forms-field_types__ads.htm#52_9">Field_Type</A>'Class;
 149                            Cft : C_Field_Type := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#148_13">C_Builtin_Router</A>)
 150    <b>is</b>
 151       <FONT COLOR=red><A NAME="147_7">Usr_Arg</A></FONT>   : System.Address := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#61_13">Get_Arg</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#151_28">Fld</A>);
 152       Low_Level : <b>constant</b> C_Field_Type := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#58_13">Get_Fieldtype</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#151_28">Fld</A>);
 153       Arg : Argument_Access;
 154       <FONT COLOR=red><A NAME="150_7">Res</A></FONT> : <A HREF="terminal_interface-curses-aux__ads.htm#78_12">Eti_Error</A>;
 155       <b>function</b> <FONT COLOR=red><A NAME="151_16">Set_Fld_Type</A></FONT> (<FONT COLOR=red><A NAME="151_30">F</A></FONT>    : <A HREF="terminal_interface-curses-forms__ads.htm#55_9">Field</A> := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#151_28">Fld</A>;
 156                              Cf   : C_Field_Type := Cft;
 157                              Arg1 : Argument_Access) <b>return</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#46_12">C_Int</A>;
 158       <b>pragma</b> Import (C, <A HREF="terminal_interface-curses-forms-field_types__adb.htm#151_16">Set_Fld_Type</A>, "set_field_type");
 159
 160    <b>begin</b>
 161       <b>pragma</b> Assert (Low_Level /= Null_Field_Type);
 162       <b>if</b> Cft /= <A HREF="terminal_interface-curses-forms-field_types__ads.htm#148_13">C_Builtin_Router</A> <b>and</b> <b>then</b> Cft /= <A HREF="terminal_interface-curses-forms-field_types__ads.htm#149_13">C_Choice_Router</A> <b>then</b>
 163          <b>raise</b> <A HREF="terminal_interface-curses-forms__ads.htm#288_4">Form_Exception</A>;
 164       <b>else</b>
 165          Arg := <b>new</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#211_9">Argument</A>'(Usr =&gt; System.Null_Address,
 166                               Typ =&gt; <b>new</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#52_9">Field_Type</A>'Class'(<A HREF="terminal_interface-curses-forms-field_types__ads.htm#152_28">Typ</A>),
 167                               Cft =&gt; <A HREF="terminal_interface-curses-forms-field_types__adb.htm#58_13">Get_Fieldtype</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#151_28">Fld</A>));
 168          <b>if</b> <A HREF="terminal_interface-curses-forms-field_types__adb.htm#147_7">Usr_Arg</A> /= System.Null_Address <b>then</b>
 169             <b>if</b> Low_Level.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#125_10">Copyarg</A> /= <b>null</b> <b>then</b>
 170                Arg.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#213_7">Usr</A> := Low_Level.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#125_10">Copyarg</A> (<A HREF="terminal_interface-curses-forms-field_types__adb.htm#147_7">Usr_Arg</A>);
 171             <b>else</b>
 172                Arg.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#213_7">Usr</A> := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#147_7">Usr_Arg</A>;
 173             <b>end</b> <b>if</b>;
 174          <b>end</b> <b>if</b>;
 175
 176          <A HREF="terminal_interface-curses-forms-field_types__adb.htm#150_7">Res</A> := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#151_16">Set_Fld_Type</A> (Arg1 =&gt; Arg);
 177          <b>if</b> <A HREF="terminal_interface-curses-forms-field_types__adb.htm#150_7">Res</A> /= <A HREF="terminal_interface-curses-aux__ads.htm#80_4">E_Ok</A> <b>then</b>
 178             <A HREF="terminal_interface-curses-aux__ads.htm#96_14">Eti_Exception</A> (<A HREF="terminal_interface-curses-forms-field_types__adb.htm#150_7">Res</A>);
 179          <b>end</b> <b>if</b>;
 180       <b>end</b> <b>if</b>;
 181    <b>end</b> Wrap_Builtin;
 182
 183    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#177_13">Field_Check_Router</A><FONT COLOR=red><A NAME="179_13"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#177_33">Fld</A> : <A HREF="terminal_interface-curses-forms__ads.htm#55_9">Field</A>;
 184                                 <A HREF="terminal_interface-curses-forms-field_types__ads.htm#178_33">Usr</A> : System.Address) <b>return</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#46_12">C_Int</A>
 185    <b>is</b>
 186       Arg  : <b>constant</b> Argument_Access := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#55_13">To_Argument_Access</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#178_33">Usr</A>);
 187    <b>begin</b>
 188       <b>pragma</b> Assert (Arg /= <b>null</b> <b>and</b> <b>then</b> Arg.Cft /= Null_Field_Type
 189                      <b>and</b> <b>then</b> Arg.Typ /= <b>null</b>);
 190       <b>if</b> Arg.Cft.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#127_10">Fcheck</A> /= <b>null</b> <b>then</b>
 191          <b>return</b> Arg.Cft.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#127_10">Fcheck</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#177_33">Fld</A>, Arg.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#213_7">Usr</A>);
 192       <b>else</b>
 193          <b>return</b> 1;
 194       <b>end</b> <b>if</b>;
 195    <b>end</b> Field_Check_Router;
 196
 197    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#185_13">Char_Check_Router</A><FONT COLOR=red><A NAME="193_13"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#185_32">Ch</A>  : <A HREF="terminal_interface-curses-forms-field_types__ads.htm#46_12">C_Int</A>;
 198                                <A HREF="terminal_interface-curses-forms-field_types__ads.htm#186_32">Usr</A> : System.Address) <b>return</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#46_12">C_Int</A>
 199    <b>is</b>
 200       Arg  : <b>constant</b> Argument_Access := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#55_13">To_Argument_Access</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#186_32">Usr</A>);
 201    <b>begin</b>
 202       <b>pragma</b> Assert (Arg /= <b>null</b> <b>and</b> <b>then</b> Arg.Cft /= Null_Field_Type
 203                      <b>and</b> <b>then</b> Arg.Typ /= <b>null</b>);
 204       <b>if</b> Arg.Cft.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#128_10">Ccheck</A> /= <b>null</b> <b>then</b>
 205          <b>return</b> Arg.Cft.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#128_10">Ccheck</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#185_32">Ch</A>, Arg.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#213_7">Usr</A>);
 206       <b>else</b>
 207          <b>return</b> 1;
 208       <b>end</b> <b>if</b>;
 209    <b>end</b> Char_Check_Router;
 210
 211    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#193_13">Next_Router</A><FONT COLOR=red><A NAME="207_13"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#193_26">Fld</A> : <A HREF="terminal_interface-curses-forms__ads.htm#55_9">Field</A>;
 212                          <A HREF="terminal_interface-curses-forms-field_types__ads.htm#194_26">Usr</A> : System.Address) <b>return</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#46_12">C_Int</A>
 213    <b>is</b>
 214       Arg  : <b>constant</b> Argument_Access := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#55_13">To_Argument_Access</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#194_26">Usr</A>);
 215    <b>begin</b>
 216       <b>pragma</b> Assert (Arg /= <b>null</b> <b>and</b> <b>then</b> Arg.Cft /= Null_Field_Type
 217                      <b>and</b> <b>then</b> Arg.Typ /= <b>null</b>);
 218       <b>if</b> Arg.Cft.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#129_10">Next</A> /= <b>null</b> <b>then</b>
 219          <b>return</b> Arg.Cft.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#129_10">Next</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#193_26">Fld</A>, Arg.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#213_7">Usr</A>);
 220       <b>else</b>
 221          <b>return</b> 1;
 222       <b>end</b> <b>if</b>;
 223    <b>end</b> Next_Router;
 224
 225    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#201_13">Prev_Router</A><FONT COLOR=red><A NAME="221_13"></A></FONT> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#201_26">Fld</A> : <A HREF="terminal_interface-curses-forms__ads.htm#55_9">Field</A>;
 226                          <A HREF="terminal_interface-curses-forms-field_types__ads.htm#202_26">Usr</A> : System.Address) <b>return</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#46_12">C_Int</A>
 227    <b>is</b>
 228       Arg  : <b>constant</b> Argument_Access := <A HREF="terminal_interface-curses-forms-field_types__adb.htm#55_13">To_Argument_Access</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#202_26">Usr</A>);
 229    <b>begin</b>
 230       <b>pragma</b> Assert (Arg /= <b>null</b> <b>and</b> <b>then</b> Arg.Cft /= Null_Field_Type
 231                      <b>and</b> <b>then</b> Arg.Typ /= <b>null</b>);
 232       <b>if</b> Arg.Cft.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#129_16">Prev</A> /= <b>null</b> <b>then</b>
 233          <b>return</b> Arg.Cft.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#129_16">Prev</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#201_26">Fld</A>, Arg.<A HREF="terminal_interface-curses-forms-field_types__ads.htm#213_7">Usr</A>);
 234       <b>else</b>
 235          <b>return</b> 1;
 236       <b>end</b> <b>if</b>;
 237    <b>end</b> Prev_Router;
 238
 239    <FONT COLOR=green><EM>--  -----------------------------------------------------------------------</EM></FONT>
 240    <FONT COLOR=green><EM>--</EM></FONT>
 241    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#148_13">C_Builtin_Router</A><FONT COLOR=red><A NAME="237_13"></A></FONT> <b>return</b> C_Field_Type
 242    <b>is</b>
 243       <FONT COLOR=red><A NAME="239_7">Res</A></FONT> : <A HREF="terminal_interface-curses-aux__ads.htm#78_12">Eti_Error</A>;
 244       T   : C_Field_Type;
 245    <b>begin</b>
 246       <b>if</b> M_Builtin_Router = Null_Field_Type <b>then</b>
 247          T := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#222_13">New_Fieldtype</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#177_13">Field_Check_Router</A>'<b>Access</b>,
 248                              <A HREF="terminal_interface-curses-forms-field_types__ads.htm#185_13">Char_Check_Router</A>'<b>Access</b>);
 249          <b>if</b> T = Null_Field_Type <b>then</b>
 250             <b>raise</b> <A HREF="terminal_interface-curses-forms__ads.htm#288_4">Form_Exception</A>;
 251          <b>else</b>
 252             <A HREF="terminal_interface-curses-forms-field_types__adb.htm#239_7">Res</A> := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#227_13">Set_Fieldtype_Arg</A> (T,
 253                                       <A HREF="terminal_interface-curses-forms-field_types__ads.htm#162_13">Make_Arg</A>'<b>Access</b>,
 254                                       <A HREF="terminal_interface-curses-forms-field_types__ads.htm#167_13">Copy_Arg</A>'<b>Access</b>,
 255                                       <A HREF="terminal_interface-curses-forms-field_types__ads.htm#172_14">Free_Arg</A>'<b>Access</b>);
 256             <b>if</b> <A HREF="terminal_interface-curses-forms-field_types__adb.htm#239_7">Res</A> /= <A HREF="terminal_interface-curses-aux__ads.htm#80_4">E_Ok</A> <b>then</b>
 257                <A HREF="terminal_interface-curses-aux__ads.htm#96_14">Eti_Exception</A> (<A HREF="terminal_interface-curses-forms-field_types__adb.htm#239_7">Res</A>);
 258             <b>end</b> <b>if</b>;
 259          <b>end</b> <b>if</b>;
 260          M_Builtin_Router := T;
 261       <b>end</b> <b>if</b>;
 262       <b>pragma</b> Assert (M_Builtin_Router /= Null_Field_Type);
 263       <b>return</b> M_Builtin_Router;
 264    <b>end</b> C_Builtin_Router;
 265
 266    <FONT COLOR=green><EM>--  -----------------------------------------------------------------------</EM></FONT>
 267    <FONT COLOR=green><EM>--</EM></FONT>
 268    <b>function</b> <A HREF="terminal_interface-curses-forms-field_types__ads.htm#149_13">C_Choice_Router</A><FONT COLOR=red><A NAME="264_13"></A></FONT> <b>return</b> C_Field_Type
 269    <b>is</b>
 270       <FONT COLOR=red><A NAME="266_7">Res</A></FONT> : <A HREF="terminal_interface-curses-aux__ads.htm#78_12">Eti_Error</A>;
 271       T   : C_Field_Type;
 272    <b>begin</b>
 273       <b>if</b> M_Choice_Router = Null_Field_Type <b>then</b>
 274          T := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#222_13">New_Fieldtype</A> (<A HREF="terminal_interface-curses-forms-field_types__ads.htm#177_13">Field_Check_Router</A>'<b>Access</b>,
 275                              <A HREF="terminal_interface-curses-forms-field_types__ads.htm#185_13">Char_Check_Router</A>'<b>Access</b>);
 276          <b>if</b> T = Null_Field_Type <b>then</b>
 277             <b>raise</b> <A HREF="terminal_interface-curses-forms__ads.htm#288_4">Form_Exception</A>;
 278          <b>else</b>
 279             <A HREF="terminal_interface-curses-forms-field_types__adb.htm#266_7">Res</A> := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#227_13">Set_Fieldtype_Arg</A> (T,
 280                                       <A HREF="terminal_interface-curses-forms-field_types__ads.htm#162_13">Make_Arg</A>'<b>Access</b>,
 281                                       <A HREF="terminal_interface-curses-forms-field_types__ads.htm#167_13">Copy_Arg</A>'<b>Access</b>,
 282                                       <A HREF="terminal_interface-curses-forms-field_types__ads.htm#172_14">Free_Arg</A>'<b>Access</b>);
 283             <b>if</b> <A HREF="terminal_interface-curses-forms-field_types__adb.htm#266_7">Res</A> /= <A HREF="terminal_interface-curses-aux__ads.htm#80_4">E_Ok</A> <b>then</b>
 284                <A HREF="terminal_interface-curses-aux__ads.htm#96_14">Eti_Exception</A> (<A HREF="terminal_interface-curses-forms-field_types__adb.htm#266_7">Res</A>);
 285             <b>end</b> <b>if</b>;
 286
 287             <A HREF="terminal_interface-curses-forms-field_types__adb.htm#266_7">Res</A> := <A HREF="terminal_interface-curses-forms-field_types__ads.htm#234_13">Set_Fieldtype_Choice</A> (T,
 288                                          <A HREF="terminal_interface-curses-forms-field_types__ads.htm#193_13">Next_Router</A>'<b>Access</b>,
 289                                          <A HREF="terminal_interface-curses-forms-field_types__ads.htm#201_13">Prev_Router</A>'<b>Access</b>);
 290             <b>if</b> <A HREF="terminal_interface-curses-forms-field_types__adb.htm#266_7">Res</A> /= <A HREF="terminal_interface-curses-aux__ads.htm#80_4">E_Ok</A> <b>then</b>
 291                <A HREF="terminal_interface-curses-aux__ads.htm#96_14">Eti_Exception</A> (<A HREF="terminal_interface-curses-forms-field_types__adb.htm#266_7">Res</A>);
 292             <b>end</b> <b>if</b>;
 293          <b>end</b> <b>if</b>;
 294          M_Choice_Router := T;
 295       <b>end</b> <b>if</b>;
 296       <b>pragma</b> Assert (M_Choice_Router /= Null_Field_Type);
 297       <b>return</b> M_Choice_Router;
 298    <b>end</b> C_Choice_Router;
 299
 300 <b>end</b> Terminal_Interface.Curses.Forms.Field_Types;
 301 </PRE></BODY></HTML>