1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
------------------------------------------------------------------------------
-- --
-- GNAT SYSTEM UTILITIES --
-- --
-- X S I N F O --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2005, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- Program to construct C header file sinfo.h (C version of sinfo.ads spec,
-- for use by Gigi, contains all definitions and access functions, but does
-- not contain set procedures, since Gigi never modifies the GNAT tree)
-- Input files:
-- sinfo.ads Spec of Sinfo package
-- Output files:
-- sinfo.h Corresponding c header file
-- Note: this program assumes that sinfo.ads has passed the error checks
-- which are carried out by the CSinfo utility, so it does not duplicate
-- these checks and assumes the soruce is correct.
-- An optional argument allows the specification of an output file name to
-- override the default sinfo.h file name for the generated output file.
with Ada.Command_Line; use Ada.Command_Line;
with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
with Ada.Strings.Unbounded.Text_IO; use Ada.Strings.Unbounded.Text_IO;
with Ada.Text_IO; use Ada.Text_IO;
with GNAT.Spitbol; use GNAT.Spitbol;
with GNAT.Spitbol.Patterns; use GNAT.Spitbol.Patterns;
procedure XSinfo is
Done : exception;
Err : exception;
A : VString := Nul;
Arg : VString := Nul;
Comment : VString := Nul;
Line : VString := Nul;
N : VString := Nul;
N1, N2 : VString := Nul;
Nam : VString := Nul;
Rtn : VString := Nul;
Term : VString := Nul;
InS : File_Type;
Ofile : File_Type;
wsp : Pattern := Span (' ' & ASCII.HT);
Wsp_For : Pattern := wsp & "for";
Is_Cmnt : Pattern := wsp & "--";
Typ_Nod : Pattern := wsp * A & "type Node_Kind is";
Get_Nam : Pattern := wsp * A & "N_" & Break (",)") * Nam
& Len (1) * Term;
Sub_Typ : Pattern := wsp * A & "subtype " & Break (' ') * N;
No_Cont : Pattern := wsp & Break (' ') * N1 & " .. " & Break (';') * N2;
Cont_N1 : Pattern := wsp & Break (' ') * N1 & " .." & Rpos (0);
Cont_N2 : Pattern := Span (' ') & Break (';') * N2;
Is_Func : Pattern := wsp * A & "function " & Rest * Nam;
Get_Arg : Pattern := wsp & "(N : " & Break (')') * Arg
& ") return " & Break (';') * Rtn
& ';' & wsp & "--" & wsp & Rest * Comment;
NKV : Natural;
M : Match_Result;
procedure Getline;
-- Get non-comment, non-blank line. Also skips "for " rep clauses
-------------
-- Getline --
-------------
procedure Getline is
begin
loop
Line := Get_Line (InS);
if Line /= ""
and then not Match (Line, Wsp_For)
and then not Match (Line, Is_Cmnt)
then
return;
elsif Match (Line, " -- End functions (note") then
raise Done;
end if;
end loop;
end Getline;
-- Start of processing for XSinfo
begin
Set_Exit_Status (1);
Anchored_Mode := True;
if Argument_Count > 0 then
Create (Ofile, Out_File, Argument (1));
else
Create (Ofile, Out_File, "sinfo.h");
end if;
Open (InS, In_File, "sinfo.ads");
-- Write header to output file
loop
Line := Get_Line (InS);
exit when Line = "";
Match
(Line,
"-- S p e c ",
"-- C Header File ");
Match (Line, "--", "/*");
Match (Line, Rtab (2) * A & "--", M);
Replace (M, A & "*/");
Put_Line (Ofile, Line);
end loop;
-- Skip to package line
loop
Getline;
exit when Match (Line, "package");
end loop;
-- Skip to first node kind line
loop
Getline;
exit when Match (Line, Typ_Nod);
Put_Line (Ofile, Line);
end loop;
Put_Line (Ofile, "");
NKV := 0;
-- Loop through node kind codes
loop
Getline;
if Match (Line, Get_Nam) then
Put_Line (Ofile, A & "#define N_" & Nam & ' ' & NKV);
NKV := NKV + 1;
exit when not Match (Term, ",");
else
Put_Line (Ofile, Line);
end if;
end loop;
Put_Line (Ofile, "");
Put_Line (Ofile, A & "#define Number_Node_Kinds " & NKV);
-- Loop through subtype declarations
loop
Getline;
if not Match (Line, Sub_Typ) then
exit when Match (Line, " function");
Put_Line (Ofile, Line);
else
Put_Line (Ofile, A & "SUBTYPE (" & N & ", Node_Kind, ");
Getline;
-- Normal case
if Match (Line, No_Cont) then
Put_Line (Ofile, A & " " & N1 & ", " & N2 & ')');
-- Continuation case
else
if not Match (Line, Cont_N1) then
raise Err;
end if;
Getline;
if not Match (Line, Cont_N2) then
raise Err;
end if;
Put_Line (Ofile, A & " " & N1 & ',');
Put_Line (Ofile, A & " " & N2 & ')');
end if;
end if;
end loop;
-- Loop through functions. Note that this loop is terminated by
-- the call to Getfile encountering the end of functions sentinel
loop
if Match (Line, Is_Func) then
Getline;
if not Match (Line, Get_Arg) then
raise Err;
end if;
Put_Line
(Ofile,
A & "INLINE " & Rpad (Rtn, 9)
& ' ' & Rpad (Nam, 30) & " (" & Arg & " N)");
Put_Line (Ofile, A & " { return " & Comment & " (N); }");
else
Put_Line (Ofile, Line);
end if;
Getline;
end loop;
exception
when Done =>
Put_Line (Ofile, "");
Set_Exit_Status (0);
end XSinfo;
|