File : sinput-d.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- S I N P U T . D --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2002-2013, Free Software Foundation, Inc. --
10 -- --
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 3, 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 COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
20 -- --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
23 -- --
24 ------------------------------------------------------------------------------
25
26 with Osint; use Osint;
27 with Osint.C; use Osint.C;
28
29 package body Sinput.D is
30
31 Dfile : Source_File_Index;
32 -- Index of currently active debug source file
33
34 ------------------------
35 -- Close_Debug_Source --
36 ------------------------
37
38 procedure Close_Debug_Source is
39 S : Source_File_Record renames Source_File.Table (Dfile);
40 Src : Source_Buffer_Ptr;
41
42 pragma Warnings (Off, S);
43
44 begin
45 Trim_Lines_Table (Dfile);
46 Close_Debug_File;
47
48 -- Now we need to read the file that we wrote and store it in memory for
49 -- subsequent access.
50
51 Read_Source_File
52 (S.Full_Debug_Name, S.Source_First, S.Source_Last, Src);
53 S.Source_Text := Src;
54 end Close_Debug_Source;
55
56 -------------------------
57 -- Create_Debug_Source --
58 -------------------------
59
60 procedure Create_Debug_Source
61 (Source : Source_File_Index;
62 Loc : out Source_Ptr)
63 is
64 begin
65 Loc :=
66 ((Source_File.Table (Source_File.Last).Source_Last + Source_Align) /
67 Source_Align) * Source_Align;
68 Source_File.Append (Source_File.Table (Source));
69 Dfile := Source_File.Last;
70
71 declare
72 S : Source_File_Record renames Source_File.Table (Dfile);
73
74 begin
75 S.Full_Debug_Name := Create_Debug_File (S.File_Name);
76 S.Debug_Source_Name := Strip_Directory (S.Full_Debug_Name);
77 S.Source_First := Loc;
78 S.Source_Last := Loc;
79 S.Lines_Table := null;
80 S.Last_Source_Line := 1;
81
82 -- Allocate lines table, guess that it needs to be three times bigger
83 -- than the original source (in number of lines).
84
85 Alloc_Line_Tables
86 (S, Int (Source_File.Table (Source).Last_Source_Line * 3));
87 S.Lines_Table (1) := Loc;
88 end;
89 end Create_Debug_Source;
90
91 ----------------------
92 -- Write_Debug_Line --
93 ----------------------
94
95 procedure Write_Debug_Line (Str : String; Loc : in out Source_Ptr) is
96 S : Source_File_Record renames Source_File.Table (Dfile);
97
98 begin
99 -- Ignore write request if null line at start of file
100
101 if Str'Length = 0 and then Loc = S.Source_First then
102 return;
103
104 -- Here we write the line, compute the source location for the following
105 -- line, allocate its table entry, and update the source record entry.
106
107 else
108 Write_Debug_Info (Str (Str'First .. Str'Last - 1));
109 Loc := Loc - 1 + Source_Ptr (Str'Length + Debug_File_Eol_Length);
110 Add_Line_Tables_Entry (S, Loc);
111 S.Source_Last := Loc;
112 Set_Source_File_Index_Table (Dfile);
113 end if;
114 end Write_Debug_Line;
115
116 end Sinput.D;