1 ------------------------------------------------------------------------------
3 -- GNAT SYSTEM UTILITIES --
9 -- Copyright (C) 1992-2002 Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
25 ------------------------------------------------------------------------------
27 -- Program to construct C header file a-sinfo.h (C version of sinfo.ads spec,
28 -- for use by Gigi, contains all definitions and access functions, but does
29 -- not contain set procedures, since Gigi never modifies the GNAT tree)
33 -- sinfo.ads Spec of Sinfo package
37 -- a-sinfo.h Corresponding c header file
39 -- Note: this program assumes that sinfo.ads has passed the error checks
40 -- which are carried out by the CSinfo utility, so it does not duplicate
41 -- these checks and assumes the soruce is correct.
43 -- An optional argument allows the specification of an output file name to
44 -- override the default a-sinfo.h file name for the generated output file.
46 with Ada.Command_Line; use Ada.Command_Line;
47 with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
48 with Ada.Strings.Unbounded.Text_IO; use Ada.Strings.Unbounded.Text_IO;
49 with Ada.Text_IO; use Ada.Text_IO;
51 with GNAT.Spitbol; use GNAT.Spitbol;
52 with GNAT.Spitbol.Patterns; use GNAT.Spitbol.Patterns;
61 Comment : VString := Nul;
62 Line : VString := Nul;
64 N1, N2 : VString := Nul;
67 Term : VString := Nul;
72 wsp : Pattern := Span (' ' & ASCII.HT);
73 Wsp_For : Pattern := wsp & "for";
74 Is_Cmnt : Pattern := wsp & "--";
75 Typ_Nod : Pattern := wsp * A & "type Node_Kind is";
76 Get_Nam : Pattern := wsp * A & "N_" & Break (",)") * Nam
78 Sub_Typ : Pattern := wsp * A & "subtype " & Break (' ') * N;
79 No_Cont : Pattern := wsp & Break (' ') * N1 & " .. " & Break (';') * N2;
80 Cont_N1 : Pattern := wsp & Break (' ') * N1 & " .." & Rpos (0);
81 Cont_N2 : Pattern := Span (' ') & Break (';') * N2;
82 Is_Func : Pattern := wsp * A & "function " & Rest * Nam;
83 Get_Arg : Pattern := wsp & "(N : " & Break (')') * Arg
84 & ") return " & Break (';') * Rtn
85 & ';' & wsp & "--" & wsp & Rest * Comment;
93 -- Get non-comment, non-blank line. Also skips "for " rep clauses.
98 Line := Get_Line (InS);
101 and then not Match (Line, Wsp_For)
102 and then not Match (Line, Is_Cmnt)
106 elsif Match (Line, " -- End functions (note") then
112 -- Start of processing for XSinfo
116 Anchored_Mode := True;
118 if Argument_Count > 0 then
119 Create (Ofile, Out_File, Argument (1));
121 Create (Ofile, Out_File, "a-sinfo.h");
124 Open (InS, In_File, "sinfo.ads");
126 -- Write header to output file
129 Line := Get_Line (InS);
135 "-- C Header File ");
137 Match (Line, "--", "/*");
138 Match (Line, Rtab (2) * A & "--", M);
139 Replace (M, A & "*/");
140 Put_Line (Ofile, Line);
143 -- Skip to package line
147 exit when Match (Line, "package");
150 -- Skip to first node kind line
154 exit when Match (Line, Typ_Nod);
155 Put_Line (Ofile, Line);
158 Put_Line (Ofile, "");
161 -- Loop through node kind codes
166 if Match (Line, Get_Nam) then
167 Put_Line (Ofile, A & "#define N_" & Nam & ' ' & NKV);
169 exit when not Match (Term, ",");
172 Put_Line (Ofile, Line);
176 Put_Line (Ofile, "");
177 Put_Line (Ofile, A & "#define Number_Node_Kinds " & NKV);
179 -- Loop through subtype declarations
184 if not Match (Line, Sub_Typ) then
185 exit when Match (Line, " function");
186 Put_Line (Ofile, Line);
189 Put_Line (Ofile, A & "SUBTYPE (" & N & ", Node_Kind, ");
194 if Match (Line, No_Cont) then
195 Put_Line (Ofile, A & " " & N1 & ", " & N2 & ')');
200 if not Match (Line, Cont_N1) then
206 if not Match (Line, Cont_N2) then
210 Put_Line (Ofile, A & " " & N1 & ',');
211 Put_Line (Ofile, A & " " & N2 & ')');
216 -- Loop through functions. Note that this loop is terminated by
217 -- the call to Getfile encountering the end of functions sentinel
220 if Match (Line, Is_Func) then
222 if not Match (Line, Get_Arg) then
227 A & "INLINE " & Rpad (Rtn, 9)
228 & ' ' & Rpad (Nam, 30) & " (" & Arg & " N)");
230 Put_Line (Ofile, A & " { return " & Comment & " (N); }");
233 Put_Line (Ofile, Line);
241 Put_Line (Ofile, "");