1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2007, 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, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, 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 -- This package contains variables common to error reporting packages
28 -- including Errout and Prj.Err.
30 with Namet; use Namet;
31 with Types; use Types;
32 with Uintp; use Uintp;
40 Serious_Errors_Detected : Nat;
41 -- This is a count of errors that are serious enough to stop expansion,
42 -- and hence to prevent generation of an object file even if the
43 -- switch -gnatQ is set. Initialized to zero at the start of compilation.
45 Total_Errors_Detected : Nat;
46 -- Number of errors detected so far. Includes count of serious errors and
47 -- non-serious errors, so this value is always greater than or equal to the
48 -- Serious_Errors_Detected value. Initialized to zero at the start of
51 Warnings_Detected : Nat;
52 -- Number of warnings detected. Initialized to zero at the start of
55 ----------------------------------
56 -- Error Message Mode Variables --
57 ----------------------------------
59 -- These variables control special error message modes. The initialized
60 -- values below give the normal default behavior, but they can be reset
61 -- by the caller to get different behavior as noted in the comments. These
62 -- variables are not reset by calls to the error message routines, so the
63 -- caller is responsible for resetting the default behavior after use.
65 Error_Msg_Qual_Level : Int;
66 -- Number of levels of qualification required for type name (see the
67 -- description of the } insertion character. Note that this value does
68 -- note get reset by any Error_Msg call, so the caller is responsible
71 Warn_On_Instance : Boolean;
72 -- Normally if a warning is generated in a generic template from the
73 -- analysis of the template, then the warning really belongs in the
74 -- template, and the default value of False for this Boolean achieves
75 -- that effect. If Warn_On_Instance is set True, then the warnings are
76 -- generated on the instantiation (referring to the template) rather
77 -- than on the template itself.
79 Raise_Exception_On_Error : Nat;
80 -- If this value is non-zero, then any attempt to generate an error
81 -- message raises the exception Error_Msg_Exception, and the error
82 -- message is not output. This is used for defending against junk
83 -- resulting from illegalities, and also for substitution of more
84 -- appropriate error messages from higher semantic levels. It is
85 -- a counter so that the increment/decrement protocol nests neatly.
87 Error_Msg_Exception : exception;
88 -- Exception raised if Raise_Exception_On_Error is true
90 Current_Error_Source_File : Source_File_Index := Internal_Source_File;
91 -- Id of current messages. Used to post file name when unit changes. This
92 -- is initialized to Main_Source_File at the start of a compilation, which
93 -- means that no file names will be output unless there are errors in units
94 -- other than the main unit. However, if the main unit has a pragma
95 -- Source_Reference line, then this is initialized to No_Source_File,
96 -- to force an initial reference to the real source file name.
98 ----------------------------------------
99 -- Error Message Insertion Parameters --
100 ----------------------------------------
102 -- The error message routines work with strings that contain insertion
103 -- sequences that result in the insertion of variable data. The following
104 -- variables contain the required data. The procedure is to set one or more
105 -- of the following global variables to appropriate values before making a
106 -- call to one of the error message routines with a string containing the
107 -- insertion character to get the value inserted in an appropriate format.
109 Error_Msg_Col : Column_Number;
110 -- Column for @ insertion character in message
112 Error_Msg_Uint_1 : Uint;
113 Error_Msg_Uint_2 : Uint;
114 -- Uint values for ^ insertion characters in message
116 Error_Msg_Sloc : Source_Ptr;
117 -- Source location for # insertion character in message
119 Error_Msg_Name_1 : Name_Id;
120 Error_Msg_Name_2 : Name_Id;
121 Error_Msg_Name_3 : Name_Id;
122 -- Name_Id values for % insertion characters in message
124 Error_Msg_File_1 : File_Name_Type;
125 Error_Msg_File_2 : File_Name_Type;
126 Error_Msg_File_3 : File_Name_Type;
127 -- File_Name_Type values for { insertion characters in message
129 Error_Msg_Unit_1 : Unit_Name_Type;
130 Error_Msg_Unit_2 : Unit_Name_Type;
131 -- Unit_Name_Type values for $ insertion characters in message
133 Error_Msg_Node_1 : Node_Id;
134 Error_Msg_Node_2 : Node_Id;
135 -- Node_Id values for & insertion characters in message
137 Error_Msg_Warn : Boolean;
138 -- Used if current message contains a < insertion character to indicate
139 -- if the current message is a warning message.
141 Error_Msg_String : String (1 .. 4096);
142 Error_Msg_Strlen : Natural;
143 -- Used if current message contains a ~ insertion character to indicate
144 -- insertion of the string Error_Msg_String (1 .. Error_Msg_Strlen).