3252 lines
104 KiB
Ada
3252 lines
104 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- E R R O U T --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1992-2002 Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
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-- MA 02111-1307, USA. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- Warning! Error messages can be generated during Gigi processing by direct
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-- calls to error message routines, so it is essential that the processing
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-- in this body be consistent with the requirements for the Gigi processing
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-- environment, and that in particular, no disallowed table expansion is
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-- allowed to occur.
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with Atree; use Atree;
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with Casing; use Casing;
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with Csets; use Csets;
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with Debug; use Debug;
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with Einfo; use Einfo;
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with Fname; use Fname;
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with Hostparm;
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with Lib; use Lib;
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with Namet; use Namet;
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with Opt; use Opt;
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with Nlists; use Nlists;
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with Output; use Output;
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with Scans; use Scans;
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with Sinput; use Sinput;
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with Sinfo; use Sinfo;
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with Snames; use Snames;
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with Stand; use Stand;
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with Style;
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with Uintp; use Uintp;
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with Uname; use Uname;
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package body Errout is
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Class_Flag : Boolean := False;
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-- This flag is set True when outputting a reference to a class-wide
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-- type, and is used by Add_Class to insert 'Class at the proper point
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Continuation : Boolean;
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-- Indicates if current message is a continuation. Initialized from the
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-- Msg_Cont parameter in Error_Msg_Internal and then set True if a \
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-- insertion character is encountered.
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Cur_Msg : Error_Msg_Id;
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-- Id of most recently posted error message
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Flag_Source : Source_File_Index;
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-- Source file index for source file where error is being posted
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Is_Warning_Msg : Boolean;
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-- Set by Set_Msg_Text to indicate if current message is warning message
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Is_Serious_Error : Boolean;
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-- Set by Set_Msg_Text to indicate if current message is serious error
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Is_Unconditional_Msg : Boolean;
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-- Set by Set_Msg_Text to indicate if current message is unconditional
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Kill_Message : Boolean;
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-- A flag used to kill weird messages (e.g. those containing uninterpreted
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-- implicit type references) if we have already seen at least one message
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-- already. The idea is that we hope the weird message is a junk cascaded
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-- message that should be suppressed.
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Last_Killed : Boolean := False;
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-- Set True if the most recently posted non-continuation message was
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-- killed. This is used to determine the processing of any continuation
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-- messages that follow.
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List_Pragmas_Index : Int;
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-- Index into List_Pragmas table
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List_Pragmas_Mode : Boolean;
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-- Starts True, gets set False by pragma List (Off), True by List (On)
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Manual_Quote_Mode : Boolean;
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-- Set True in manual quotation mode
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Max_Msg_Length : constant := 80 + 2 * Hostparm.Max_Line_Length;
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-- Maximum length of error message. The addition of Max_Line_Length
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-- ensures that two insertion tokens of maximum length can be accomodated.
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Msg_Buffer : String (1 .. Max_Msg_Length);
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-- Buffer used to prepare error messages
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Msglen : Integer;
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-- Number of characters currently stored in the message buffer
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Suppress_Message : Boolean;
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-- A flag used to suppress certain obviously redundant messages (i.e.
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-- those referring to a node whose type is Any_Type). This suppression
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-- is effective only if All_Errors_Mode is off.
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Suppress_Instance_Location : Boolean := False;
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-- Normally, if a # location in a message references a location within
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-- a generic template, then a note is added giving the location of the
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-- instantiation. If this variable is set True, then this note is not
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-- output. This is used for internal processing for the case of an
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-- illegal instantiation. See Error_Msg routine for further details.
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-----------------------------------
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-- Error Message Data Structures --
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-----------------------------------
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-- The error messages are stored as a linked list of error message objects
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-- sorted into ascending order by the source location (Sloc). Each object
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-- records the text of the message and its source location.
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-- The following record type and table are used to represent error
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-- messages, with one entry in the table being allocated for each message.
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type Error_Msg_Object is record
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Text : String_Ptr;
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-- Text of error message, fully expanded with all insertions
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Next : Error_Msg_Id;
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-- Pointer to next message in error chain
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Sfile : Source_File_Index;
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-- Source table index of source file. In the case of an error that
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-- refers to a template, always references the original template
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-- not an instantiation copy.
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Sptr : Source_Ptr;
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-- Flag pointer. In the case of an error that refers to a template,
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-- always references the original template, not an instantiation copy.
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-- This value is the actual place in the source that the error message
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-- will be posted.
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Fptr : Source_Ptr;
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-- Flag location used in the call to post the error. This is normally
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-- the same as Sptr, except in the case of instantiations, where it
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-- is the original flag location value. This may refer to an instance
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-- when the actual message (and hence Sptr) references the template.
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Line : Physical_Line_Number;
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-- Line number for error message
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Col : Column_Number;
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-- Column number for error message
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Warn : Boolean;
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-- True if warning message (i.e. insertion character ? appeared)
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Serious : Boolean;
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-- True if serious error message (not a warning and no | character)
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Uncond : Boolean;
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-- True if unconditional message (i.e. insertion character ! appeared)
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Msg_Cont : Boolean;
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-- This is used for logical messages that are composed of multiple
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-- individual messages. For messages that are not part of such a
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-- group, or that are the first message in such a group. Msg_Cont
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-- is set to False. For subsequent messages in a group, Msg_Cont
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-- is set to True. This is used to make sure that such a group of
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-- messages is either suppressed or retained as a group (e.g. in
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-- the circuit that deletes identical messages).
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Deleted : Boolean;
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-- If this flag is set, the message is not printed. This is used
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-- in the circuit for deleting duplicate/redundant error messages.
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end record;
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package Errors is new Table.Table (
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Table_Component_Type => Error_Msg_Object,
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Table_Index_Type => Error_Msg_Id,
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Table_Low_Bound => 1,
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Table_Initial => 200,
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Table_Increment => 200,
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Table_Name => "Error");
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Error_Msgs : Error_Msg_Id;
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-- The list of error messages
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--------------------------
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-- Warning Mode Control --
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--------------------------
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-- Pragma Warnings allows warnings to be turned off for a specified
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-- region of code, and the following tabl is the data structure used
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-- to keep track of these regions.
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-- It contains pairs of source locations, the first being the start
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-- location for a warnings off region, and the second being the end
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-- location. When a pragma Warnings (Off) is encountered, a new entry
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-- is established extending from the location of the pragma to the
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-- end of the current source file. A subsequent pragma Warnings (On)
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-- adjusts the end point of this entry appropriately.
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-- If all warnings are suppressed by comamnd switch, then there is a
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-- dummy entry (put there by Errout.Initialize) at the start of the
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-- table which covers all possible Source_Ptr values. Note that the
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-- source pointer values in this table always reference the original
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-- template, not an instantiation copy, in the generic case.
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type Warnings_Entry is record
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Start : Source_Ptr;
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Stop : Source_Ptr;
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end record;
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package Warnings is new Table.Table (
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Table_Component_Type => Warnings_Entry,
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Table_Index_Type => Natural,
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Table_Low_Bound => 1,
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Table_Initial => 100,
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Table_Increment => 200,
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Table_Name => "Warnings");
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-----------------------
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-- Local Subprograms --
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-----------------------
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procedure Add_Class;
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-- Add 'Class to buffer for class wide type case (Class_Flag set)
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function Buffer_Ends_With (S : String) return Boolean;
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-- Tests if message buffer ends with given string preceded by a space
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procedure Buffer_Remove (S : String);
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-- Removes given string from end of buffer if it is present
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-- at end of buffer, and preceded by a space.
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procedure Debug_Output (N : Node_Id);
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-- Called from Error_Msg_N and Error_Msg_NE to generate line of debug
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-- output giving node number (of node N) if the debug X switch is set.
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procedure Check_Duplicate_Message (M1, M2 : Error_Msg_Id);
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-- This function is passed the Id values of two error messages. If
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-- either M1 or M2 is a continuation message, or is already deleted,
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-- the call is ignored. Otherwise a check is made to see if M1 and M2
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-- are duplicated or redundant. If so, the message to be deleted and
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-- all its continuations are marked with the Deleted flag set to True.
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procedure Error_Msg_Internal
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(Msg : String;
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Flag_Location : Source_Ptr;
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Msg_Cont : Boolean);
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-- This is like Error_Msg, except that Flag_Location is known not to be
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-- a location within a instantiation of a generic template. The outer
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-- level routine, Error_Msg, takes care of dealing with the generic case.
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-- Msg_Cont is set True to indicate that the message is a continuation of
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-- a previous message. This means that it must have the same Flag_Location
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-- as the previous message.
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procedure Set_Next_Non_Deleted_Msg (E : in out Error_Msg_Id);
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-- Given a message id, move to next message id, but skip any deleted
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-- messages, so that this results in E on output being the first non-
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-- deleted message following the input value of E, or No_Error_Msg if
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-- the input value of E was either already No_Error_Msg, or was the
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-- last non-deleted message.
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function No_Warnings (N : Node_Or_Entity_Id) return Boolean;
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-- Determines if warnings should be suppressed for the given node
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function OK_Node (N : Node_Id) return Boolean;
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-- Determines if a node is an OK node to place an error message on (return
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-- True) or if the error message should be suppressed (return False). A
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-- message is suppressed if the node already has an error posted on it,
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-- or if it refers to an Etype that has an error posted on it, or if
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-- it references an Entity that has an error posted on it.
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procedure Output_Error_Msgs (E : in out Error_Msg_Id);
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-- Output source line, error flag, and text of stored error message and
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-- all subsequent messages for the same line and unit. On return E is
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-- set to be one higher than the last message output.
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procedure Output_Line_Number (L : Logical_Line_Number);
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-- Output a line number as six digits (with leading zeroes suppressed),
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-- followed by a period and a blank (note that this is 8 characters which
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-- means that tabs in the source line will not get messed up). Line numbers
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-- that match or are less than the last Source_Reference pragma are listed
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-- as all blanks, avoiding output of junk line numbers.
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procedure Output_Msg_Text (E : Error_Msg_Id);
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-- Outputs characters of text in the text of the error message E, excluding
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-- any final exclamation point. Note that no end of line is output, the
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-- caller is responsible for adding the end of line.
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procedure Output_Source_Line
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(L : Physical_Line_Number;
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Sfile : Source_File_Index;
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Errs : Boolean);
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-- Outputs text of source line L, in file S, together with preceding line
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-- number, as described above for Output_Line_Number. The Errs parameter
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-- indicates if there are errors attached to the line, which forces
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-- listing on, even in the presence of pragma List (Off).
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function Same_Error (M1, M2 : Error_Msg_Id) return Boolean;
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-- See if two messages have the same text. Returns true if the text
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-- of the two messages is identical, or if one of them is the same
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-- as the other with an appended "instance at xxx" tag.
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procedure Set_Msg_Blank;
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-- Sets a single blank in the message if the preceding character is a
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-- non-blank character other than a left parenthesis. Has no effect if
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-- manual quote mode is turned on.
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procedure Set_Msg_Blank_Conditional;
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-- Sets a single blank in the message if the preceding character is a
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-- non-blank character other than a left parenthesis or quote. Has no
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-- effect if manual quote mode is turned on.
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procedure Set_Msg_Char (C : Character);
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-- Add a single character to the current message. This routine does not
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-- check for special insertion characters (they are just treated as text
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-- characters if they occur).
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procedure Set_Msg_Insertion_Column;
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-- Handle column number insertion (@ insertion character)
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procedure Set_Msg_Insertion_Name;
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-- Handle name insertion (% insertion character)
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procedure Set_Msg_Insertion_Line_Number (Loc, Flag : Source_Ptr);
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-- Handle line number insertion (# insertion character). Loc is the
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-- location to be referenced, and Flag is the location at which the
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-- flag is posted (used to determine whether to add "in file xxx")
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procedure Set_Msg_Insertion_Node;
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-- Handle node (name from node) insertion (& insertion character)
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procedure Set_Msg_Insertion_Reserved_Name;
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-- Handle insertion of reserved word name (* insertion character).
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procedure Set_Msg_Insertion_Reserved_Word
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(Text : String;
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J : in out Integer);
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-- Handle reserved word insertion (upper case letters). The Text argument
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-- is the current error message input text, and J is an index which on
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-- entry points to the first character of the reserved word, and on exit
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-- points past the last character of the reserved word.
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procedure Set_Msg_Insertion_Type_Reference (Flag : Source_Ptr);
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-- Handle type reference (right brace insertion character). Flag is the
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-- location of the flag, which is provided for the internal call to
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-- Set_Msg_Insertion_Line_Number,
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procedure Set_Msg_Insertion_Uint;
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-- Handle Uint insertion (^ insertion character)
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procedure Set_Msg_Insertion_Unit_Name;
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-- Handle unit name insertion ($ insertion character)
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procedure Set_Msg_Insertion_File_Name;
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-- Handle file name insertion (left brace insertion character)
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procedure Set_Msg_Int (Line : Int);
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-- Set the decimal representation of the argument in the error message
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-- buffer with no leading zeroes output.
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procedure Set_Msg_Name_Buffer;
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-- Output name from Name_Buffer, with surrounding quotes unless manual
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-- quotation mode is in effect.
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procedure Set_Msg_Node (Node : Node_Id);
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-- Add the sequence of characters for the name associated with the
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-- given node to the current message.
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procedure Set_Msg_Quote;
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-- Set quote if in normal quote mode, nothing if in manual quote mode
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procedure Set_Msg_Str (Text : String);
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-- Add a sequence of characters to the current message. This routine does
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-- not check for special insertion characters (they are just treated as
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-- text characters if they occur).
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procedure Set_Msg_Text (Text : String; Flag : Source_Ptr);
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-- Add a sequence of characters to the current message. The characters may
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-- be one of the special insertion characters (see documentation in spec).
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-- Flag is the location at which the error is to be posted, which is used
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-- to determine whether or not the # insertion needs a file name. The
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-- variables Msg_Buffer, Msglen, Is_Warning_Msg, and Is_Unconditional_Msg
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-- are set on return.
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procedure Set_Posted (N : Node_Id);
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-- Sets the Error_Posted flag on the given node, and all its parents
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-- that are subexpressions and then on the parent non-subexpression
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-- construct that contains the original expression (this reduces the
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-- number of cascaded messages)
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procedure Set_Qualification (N : Nat; E : Entity_Id);
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-- Outputs up to N levels of qualification for the given entity. For
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-- example, the entity A.B.C.D will output B.C. if N = 2.
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function Special_Msg_Delete
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(Msg : String;
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N : Node_Or_Entity_Id;
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E : Node_Or_Entity_Id)
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return Boolean;
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-- This function is called from Error_Msg_NEL, passing the message Msg,
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-- node N on which the error is to be posted, and the entity or node E
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-- to be used for an & insertion in the message if any. The job of this
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-- procedure is to test for certain cascaded messages that we would like
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-- to suppress. If the message is to be suppressed then we return True.
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-- If the message should be generated (the normal case) False is returned.
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procedure Test_Warning_Msg (Msg : String);
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-- Sets Is_Warning_Msg true if Msg is a warning message (contains a
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-- question mark character), and False otherwise.
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procedure Unwind_Internal_Type (Ent : in out Entity_Id);
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-- This procedure is given an entity id for an internal type, i.e.
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-- a type with an internal name. It unwinds the type to try to get
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-- to something reasonably printable, generating prefixes like
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-- "subtype of", "access to", etc along the way in the buffer. The
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-- value in Ent on return is the final name to be printed. Hopefully
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-- this is not an internal name, but in some internal name cases, it
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-- is an internal name, and has to be printed anyway (although in this
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-- case the message has been killed if possible). The global variable
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-- Class_Flag is set to True if the resulting entity should have
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-- 'Class appended to its name (see Add_Class procedure), and is
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-- otherwise unchanged.
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function Warnings_Suppressed (Loc : Source_Ptr) return Boolean;
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-- Determines if given location is covered by a warnings off suppression
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-- range in the warnings table (or is suppressed by compilation option,
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-- which generates a warning range for the whole source file).
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---------------
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-- Add_Class --
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---------------
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procedure Add_Class is
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begin
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if Class_Flag then
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Class_Flag := False;
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Set_Msg_Char (''');
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Get_Name_String (Name_Class);
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Set_Casing (Identifier_Casing (Flag_Source), Mixed_Case);
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Set_Msg_Name_Buffer;
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end if;
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end Add_Class;
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----------------------
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-- Buffer_Ends_With --
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----------------------
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function Buffer_Ends_With (S : String) return Boolean is
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Len : constant Natural := S'Length;
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begin
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return
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Msglen > Len
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and then Msg_Buffer (Msglen - Len) = ' '
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and then Msg_Buffer (Msglen - Len + 1 .. Msglen) = S;
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end Buffer_Ends_With;
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-------------------
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-- Buffer_Remove --
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-------------------
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procedure Buffer_Remove (S : String) is
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begin
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if Buffer_Ends_With (S) then
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Msglen := Msglen - S'Length;
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end if;
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end Buffer_Remove;
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-----------------------
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-- Change_Error_Text --
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-----------------------
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procedure Change_Error_Text (Error_Id : Error_Msg_Id; New_Msg : String) is
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Save_Next : Error_Msg_Id;
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Err_Id : Error_Msg_Id := Error_Id;
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begin
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|
Set_Msg_Text (New_Msg, Errors.Table (Error_Id).Sptr);
|
|
Errors.Table (Error_Id).Text := new String'(Msg_Buffer (1 .. Msglen));
|
|
|
|
-- If in immediate error message mode, output modified error message now
|
|
-- This is just a bit tricky, because we want to output just a single
|
|
-- message, and the messages we modified is already linked in. We solve
|
|
-- this by temporarily resetting its forward pointer to empty.
|
|
|
|
if Debug_Flag_OO then
|
|
Save_Next := Errors.Table (Error_Id).Next;
|
|
Errors.Table (Error_Id).Next := No_Error_Msg;
|
|
Write_Eol;
|
|
Output_Source_Line
|
|
(Errors.Table (Error_Id).Line, Errors.Table (Error_Id).Sfile, True);
|
|
Output_Error_Msgs (Err_Id);
|
|
Errors.Table (Error_Id).Next := Save_Next;
|
|
end if;
|
|
end Change_Error_Text;
|
|
|
|
-----------------------------
|
|
-- Check_Duplicate_Message --
|
|
-----------------------------
|
|
|
|
procedure Check_Duplicate_Message (M1, M2 : Error_Msg_Id) is
|
|
L1, L2 : Error_Msg_Id;
|
|
N1, N2 : Error_Msg_Id;
|
|
|
|
procedure Delete_Msg (Delete, Keep : Error_Msg_Id);
|
|
-- Called to delete message Delete, keeping message Keep. Marks
|
|
-- all messages of Delete with deleted flag set to True, and also
|
|
-- makes sure that for the error messages that are retained the
|
|
-- preferred message is the one retained (we prefer the shorter
|
|
-- one in the case where one has an Instance tag). Note that we
|
|
-- always know that Keep has at least as many continuations as
|
|
-- Delete (since we always delete the shorter sequence).
|
|
|
|
----------------
|
|
-- Delete_Msg --
|
|
----------------
|
|
|
|
procedure Delete_Msg (Delete, Keep : Error_Msg_Id) is
|
|
D, K : Error_Msg_Id;
|
|
|
|
begin
|
|
D := Delete;
|
|
K := Keep;
|
|
|
|
loop
|
|
Errors.Table (D).Deleted := True;
|
|
|
|
-- Adjust error message count
|
|
|
|
if Errors.Table (D).Warn then
|
|
Warnings_Detected := Warnings_Detected - 1;
|
|
else
|
|
Total_Errors_Detected := Total_Errors_Detected - 1;
|
|
|
|
if Errors.Table (D).Serious then
|
|
Serious_Errors_Detected := Serious_Errors_Detected - 1;
|
|
end if;
|
|
end if;
|
|
|
|
-- Substitute shorter of the two error messages
|
|
|
|
if Errors.Table (K).Text'Length > Errors.Table (D).Text'Length then
|
|
Errors.Table (K).Text := Errors.Table (D).Text;
|
|
end if;
|
|
|
|
D := Errors.Table (D).Next;
|
|
K := Errors.Table (K).Next;
|
|
|
|
if D = No_Error_Msg or else not Errors.Table (D).Msg_Cont then
|
|
return;
|
|
end if;
|
|
end loop;
|
|
end Delete_Msg;
|
|
|
|
-- Start of processing for Check_Duplicate_Message
|
|
|
|
begin
|
|
-- Both messages must be non-continuation messages and not deleted
|
|
|
|
if Errors.Table (M1).Msg_Cont
|
|
or else Errors.Table (M2).Msg_Cont
|
|
or else Errors.Table (M1).Deleted
|
|
or else Errors.Table (M2).Deleted
|
|
then
|
|
return;
|
|
end if;
|
|
|
|
-- Definitely not equal if message text does not match
|
|
|
|
if not Same_Error (M1, M2) then
|
|
return;
|
|
end if;
|
|
|
|
-- Same text. See if all continuations are also identical
|
|
|
|
L1 := M1;
|
|
L2 := M2;
|
|
|
|
loop
|
|
N1 := Errors.Table (L1).Next;
|
|
N2 := Errors.Table (L2).Next;
|
|
|
|
-- If M1 continuations have run out, we delete M1, either the
|
|
-- messages have the same number of continuations, or M2 has
|
|
-- more and we prefer the one with more anyway.
|
|
|
|
if N1 = No_Error_Msg or else not Errors.Table (N1).Msg_Cont then
|
|
Delete_Msg (M1, M2);
|
|
return;
|
|
|
|
-- If M2 continuatins have run out, we delete M2
|
|
|
|
elsif N2 = No_Error_Msg or else not Errors.Table (N2).Msg_Cont then
|
|
Delete_Msg (M2, M1);
|
|
return;
|
|
|
|
-- Otherwise see if continuations are the same, if not, keep both
|
|
-- sequences, a curious case, but better to keep everything!
|
|
|
|
elsif not Same_Error (N1, N2) then
|
|
return;
|
|
|
|
-- If continuations are the same, continue scan
|
|
|
|
else
|
|
L1 := N1;
|
|
L2 := N2;
|
|
end if;
|
|
end loop;
|
|
end Check_Duplicate_Message;
|
|
|
|
------------------------
|
|
-- Compilation_Errors --
|
|
------------------------
|
|
|
|
function Compilation_Errors return Boolean is
|
|
begin
|
|
return Total_Errors_Detected /= 0
|
|
or else (Warnings_Detected /= 0
|
|
and then Warning_Mode = Treat_As_Error);
|
|
end Compilation_Errors;
|
|
|
|
------------------
|
|
-- Debug_Output --
|
|
------------------
|
|
|
|
procedure Debug_Output (N : Node_Id) is
|
|
begin
|
|
if Debug_Flag_1 then
|
|
Write_Str ("*** following error message posted on node id = #");
|
|
Write_Int (Int (N));
|
|
Write_Str (" ***");
|
|
Write_Eol;
|
|
end if;
|
|
end Debug_Output;
|
|
|
|
----------
|
|
-- dmsg --
|
|
----------
|
|
|
|
procedure dmsg (Id : Error_Msg_Id) is
|
|
E : Error_Msg_Object renames Errors.Table (Id);
|
|
|
|
begin
|
|
w ("Dumping error message, Id = ", Int (Id));
|
|
w (" Text = ", E.Text.all);
|
|
w (" Next = ", Int (E.Next));
|
|
w (" Sfile = ", Int (E.Sfile));
|
|
|
|
Write_Str
|
|
(" Sptr = ");
|
|
Write_Location (E.Sptr);
|
|
Write_Eol;
|
|
|
|
Write_Str
|
|
(" Fptr = ");
|
|
Write_Location (E.Fptr);
|
|
Write_Eol;
|
|
|
|
w (" Line = ", Int (E.Line));
|
|
w (" Col = ", Int (E.Col));
|
|
w (" Warn = ", E.Warn);
|
|
w (" Serious = ", E.Serious);
|
|
w (" Uncond = ", E.Uncond);
|
|
w (" Msg_Cont = ", E.Msg_Cont);
|
|
w (" Deleted = ", E.Deleted);
|
|
|
|
Write_Eol;
|
|
end dmsg;
|
|
|
|
---------------
|
|
-- Error_Msg --
|
|
---------------
|
|
|
|
-- Error_Msg posts a flag at the given location, except that if the
|
|
-- Flag_Location points within a generic template and corresponds
|
|
-- to an instantiation of this generic template, then the actual
|
|
-- message will be posted on the generic instantiation, along with
|
|
-- additional messages referencing the generic declaration.
|
|
|
|
procedure Error_Msg (Msg : String; Flag_Location : Source_Ptr) is
|
|
Sindex : Source_File_Index;
|
|
-- Source index for flag location
|
|
|
|
Orig_Loc : Source_Ptr;
|
|
-- Original location of Flag_Location (i.e. location in original
|
|
-- template in instantiation case, otherwise unchanged).
|
|
|
|
begin
|
|
-- If we already have messages, and we are trying to place a message
|
|
-- at No_Location or in package Standard, then just ignore the attempt
|
|
-- since we assume that what is happening is some cascaded junk. Note
|
|
-- that this is safe in the sense that proceeding will surely bomb.
|
|
|
|
if Flag_Location < First_Source_Ptr
|
|
and then Total_Errors_Detected > 0
|
|
then
|
|
return;
|
|
end if;
|
|
|
|
Sindex := Get_Source_File_Index (Flag_Location);
|
|
Test_Warning_Msg (Msg);
|
|
|
|
-- It is a fatal error to issue an error message when scanning from
|
|
-- the internal source buffer (see Sinput for further documentation)
|
|
|
|
pragma Assert (Source /= Internal_Source_Ptr);
|
|
|
|
-- Ignore warning message that is suppressed
|
|
|
|
Orig_Loc := Original_Location (Flag_Location);
|
|
|
|
if Is_Warning_Msg and then Warnings_Suppressed (Orig_Loc) then
|
|
return;
|
|
end if;
|
|
|
|
-- The idea at this stage is that we have two kinds of messages.
|
|
|
|
-- First, we have those that are to be placed as requested at
|
|
-- Flag_Location. This includes messages that have nothing to
|
|
-- do with generics, and also messages placed on generic templates
|
|
-- that reflect an error in the template itself. For such messages
|
|
-- we simply call Error_Msg_Internal to place the message in the
|
|
-- requested location.
|
|
|
|
if Instantiation (Sindex) = No_Location then
|
|
Error_Msg_Internal (Msg, Flag_Location, False);
|
|
return;
|
|
end if;
|
|
|
|
-- If we are trying to flag an error in an instantiation, we may have
|
|
-- a generic contract violation. What we generate in this case is:
|
|
|
|
-- instantiation error at ...
|
|
-- original error message
|
|
|
|
-- or
|
|
|
|
-- warning: in instantiation at
|
|
-- warning: original warning message
|
|
|
|
-- All these messages are posted at the location of the top level
|
|
-- instantiation. If there are nested instantiations, then the
|
|
-- instantiation error message can be repeated, pointing to each
|
|
-- of the relevant instantiations.
|
|
|
|
-- However, before we do this, we need to worry about the case where
|
|
-- indeed we are in an instantiation, but the message is a warning
|
|
-- message. In this case, it almost certainly a warning for the
|
|
-- template itself and so it is posted on the template. At least
|
|
-- this is the default mode, it can be cancelled (resulting the
|
|
-- warning being placed on the instance as in the error case) by
|
|
-- setting the global Warn_On_Instance True.
|
|
|
|
if (not Warn_On_Instance) and then Is_Warning_Msg then
|
|
Error_Msg_Internal (Msg, Flag_Location, False);
|
|
return;
|
|
end if;
|
|
|
|
-- Second, we need to worry about the case where there was a real error
|
|
-- in the template, and we are getting a repeat of this error in the
|
|
-- instantiation. We don't want to complain about the instantiation
|
|
-- in this case, since we have already flagged the template.
|
|
|
|
-- To deal with this case, just see if we have posted a message at
|
|
-- the template location already. If so, assume that the current
|
|
-- message is redundant. There could be cases in which this is not
|
|
-- a correct assumption, but it is not terrible to lose a message
|
|
-- about an incorrect instantiation given that we have already
|
|
-- flagged a message on the template.
|
|
|
|
for Err in Errors.First .. Errors.Last loop
|
|
if Errors.Table (Err).Sptr = Orig_Loc then
|
|
|
|
-- If the current message is a real error, as opposed to a
|
|
-- warning, then we don't want to let a warning on the
|
|
-- template inhibit a real error on the instantiation.
|
|
|
|
if Is_Warning_Msg
|
|
or else not Errors.Table (Err).Warn
|
|
then
|
|
return;
|
|
end if;
|
|
end if;
|
|
end loop;
|
|
|
|
-- OK, this is the case where we have an instantiation error, and
|
|
-- we need to generate the error on the instantiation, rather than
|
|
-- on the template. First, see if we have posted this exact error
|
|
-- before, and if so suppress it. It is not so easy to use the main
|
|
-- list of errors for this, since they have already been split up
|
|
-- according to the processing below. Consequently we use an auxiliary
|
|
-- data structure that just records these types of messages (it will
|
|
-- never have very many entries).
|
|
|
|
declare
|
|
Actual_Error_Loc : Source_Ptr;
|
|
-- Location of outer level instantiation in instantiation case, or
|
|
-- just a copy of Flag_Location in the normal case. This is the
|
|
-- location where all error messages will actually be posted.
|
|
|
|
Save_Error_Msg_Sloc : constant Source_Ptr := Error_Msg_Sloc;
|
|
-- Save possible location set for caller's message. We need to
|
|
-- use Error_Msg_Sloc for the location of the instantiation error
|
|
-- but we have to preserve a possible original value.
|
|
|
|
X : Source_File_Index;
|
|
|
|
Msg_Cont_Status : Boolean;
|
|
-- Used to label continuation lines in instantiation case with
|
|
-- proper Msg_Cont status.
|
|
|
|
begin
|
|
-- Loop to find highest level instantiation, where all error
|
|
-- messages will be placed.
|
|
|
|
X := Sindex;
|
|
loop
|
|
Actual_Error_Loc := Instantiation (X);
|
|
X := Get_Source_File_Index (Actual_Error_Loc);
|
|
exit when Instantiation (X) = No_Location;
|
|
end loop;
|
|
|
|
-- Since we are generating the messages at the instantiation
|
|
-- point in any case, we do not want the references to the
|
|
-- bad lines in the instance to be annotated with the location
|
|
-- of the instantiation.
|
|
|
|
Suppress_Instance_Location := True;
|
|
Msg_Cont_Status := False;
|
|
|
|
-- Loop to generate instantiation messages
|
|
|
|
Error_Msg_Sloc := Flag_Location;
|
|
X := Get_Source_File_Index (Flag_Location);
|
|
|
|
while Instantiation (X) /= No_Location loop
|
|
|
|
-- Suppress instantiation message on continuation lines
|
|
|
|
if Msg (1) /= '\' then
|
|
if Is_Warning_Msg then
|
|
Error_Msg_Internal
|
|
("?in instantiation #",
|
|
Actual_Error_Loc, Msg_Cont_Status);
|
|
|
|
else
|
|
Error_Msg_Internal
|
|
("instantiation error #",
|
|
Actual_Error_Loc, Msg_Cont_Status);
|
|
end if;
|
|
end if;
|
|
|
|
Error_Msg_Sloc := Instantiation (X);
|
|
X := Get_Source_File_Index (Error_Msg_Sloc);
|
|
Msg_Cont_Status := True;
|
|
end loop;
|
|
|
|
Suppress_Instance_Location := False;
|
|
Error_Msg_Sloc := Save_Error_Msg_Sloc;
|
|
|
|
-- Here we output the original message on the outer instantiation
|
|
|
|
Error_Msg_Internal (Msg, Actual_Error_Loc, Msg_Cont_Status);
|
|
end;
|
|
end Error_Msg;
|
|
|
|
------------------
|
|
-- Error_Msg_AP --
|
|
------------------
|
|
|
|
procedure Error_Msg_AP (Msg : String) is
|
|
S1 : Source_Ptr;
|
|
C : Character;
|
|
|
|
begin
|
|
-- If we had saved the Scan_Ptr value after scanning the previous
|
|
-- token, then we would have exactly the right place for putting
|
|
-- the flag immediately at hand. However, that would add at least
|
|
-- two instructions to a Scan call *just* to service the possibility
|
|
-- of an Error_Msg_AP call. So instead we reconstruct that value.
|
|
|
|
-- We have two possibilities, start with Prev_Token_Ptr and skip over
|
|
-- the current token, which is made harder by the possibility that this
|
|
-- token may be in error, or start with Token_Ptr and work backwards.
|
|
-- We used to take the second approach, but it's hard because of
|
|
-- comments, and harder still because things that look like comments
|
|
-- can appear inside strings. So now we take the first approach.
|
|
|
|
-- Note: in the case where there is no previous token, Prev_Token_Ptr
|
|
-- is set to Source_First, which is a reasonable position for the
|
|
-- error flag in this situation.
|
|
|
|
S1 := Prev_Token_Ptr;
|
|
C := Source (S1);
|
|
|
|
-- If the previous token is a string literal, we need a special approach
|
|
-- since there may be white space inside the literal and we don't want
|
|
-- to stop on that white space.
|
|
|
|
if Prev_Token = Tok_String_Literal then
|
|
loop
|
|
S1 := S1 + 1;
|
|
|
|
if Source (S1) = C then
|
|
S1 := S1 + 1;
|
|
exit when Source (S1) /= C;
|
|
elsif Source (S1) in Line_Terminator then
|
|
exit;
|
|
end if;
|
|
end loop;
|
|
|
|
-- Character literal also needs special handling
|
|
|
|
elsif Prev_Token = Tok_Char_Literal then
|
|
S1 := S1 + 3;
|
|
|
|
-- Otherwise we search forward for the end of the current token, marked
|
|
-- by a line terminator, white space, a comment symbol or if we bump
|
|
-- into the following token (i.e. the current token)
|
|
|
|
else
|
|
while Source (S1) not in Line_Terminator
|
|
and then Source (S1) /= ' '
|
|
and then Source (S1) /= ASCII.HT
|
|
and then (Source (S1) /= '-' or else Source (S1 + 1) /= '-')
|
|
and then S1 /= Token_Ptr
|
|
loop
|
|
S1 := S1 + 1;
|
|
end loop;
|
|
end if;
|
|
|
|
-- S1 is now set to the location for the flag
|
|
|
|
Error_Msg (Msg, S1);
|
|
|
|
end Error_Msg_AP;
|
|
|
|
------------------
|
|
-- Error_Msg_BC --
|
|
------------------
|
|
|
|
procedure Error_Msg_BC (Msg : String) is
|
|
begin
|
|
-- If we are at end of file, post the flag after the previous token
|
|
|
|
if Token = Tok_EOF then
|
|
Error_Msg_AP (Msg);
|
|
|
|
-- If we are at start of file, post the flag at the current token
|
|
|
|
elsif Token_Ptr = Source_First (Current_Source_File) then
|
|
Error_Msg_SC (Msg);
|
|
|
|
-- If the character before the current token is a space or a horizontal
|
|
-- tab, then we place the flag on this character (in the case of a tab
|
|
-- we would really like to place it in the "last" character of the tab
|
|
-- space, but that it too much trouble to worry about).
|
|
|
|
elsif Source (Token_Ptr - 1) = ' '
|
|
or else Source (Token_Ptr - 1) = ASCII.HT
|
|
then
|
|
Error_Msg (Msg, Token_Ptr - 1);
|
|
|
|
-- If there is no space or tab before the current token, then there is
|
|
-- no room to place the flag before the token, so we place it on the
|
|
-- token instead (this happens for example at the start of a line).
|
|
|
|
else
|
|
Error_Msg (Msg, Token_Ptr);
|
|
end if;
|
|
end Error_Msg_BC;
|
|
|
|
------------------------
|
|
-- Error_Msg_Internal --
|
|
------------------------
|
|
|
|
procedure Error_Msg_Internal
|
|
(Msg : String;
|
|
Flag_Location : Source_Ptr;
|
|
Msg_Cont : Boolean)
|
|
is
|
|
Next_Msg : Error_Msg_Id;
|
|
-- Pointer to next message at insertion point
|
|
|
|
Prev_Msg : Error_Msg_Id;
|
|
-- Pointer to previous message at insertion point
|
|
|
|
Temp_Msg : Error_Msg_Id;
|
|
|
|
Orig_Loc : constant Source_Ptr := Original_Location (Flag_Location);
|
|
|
|
procedure Handle_Serious_Error;
|
|
-- Internal procedure to do all error message handling for a serious
|
|
-- error message, other than bumping the error counts and arranging
|
|
-- for the message to be output.
|
|
|
|
--------------------------
|
|
-- Handle_Serious_Error --
|
|
--------------------------
|
|
|
|
procedure Handle_Serious_Error is
|
|
begin
|
|
-- Turn off code generation if not done already
|
|
|
|
if Operating_Mode = Generate_Code then
|
|
Operating_Mode := Check_Semantics;
|
|
Expander_Active := False;
|
|
end if;
|
|
|
|
-- Set the fatal error flag in the unit table unless we are
|
|
-- in Try_Semantics mode. This stops the semantics from being
|
|
-- performed if we find a serious error. This is skipped if we
|
|
-- are currently dealing with the configuration pragma file.
|
|
|
|
if not Try_Semantics
|
|
and then Current_Source_Unit /= No_Unit
|
|
then
|
|
Set_Fatal_Error (Get_Source_Unit (Orig_Loc));
|
|
end if;
|
|
end Handle_Serious_Error;
|
|
|
|
-- Start of processing for Error_Msg_Internal
|
|
|
|
begin
|
|
if Raise_Exception_On_Error /= 0 then
|
|
raise Error_Msg_Exception;
|
|
end if;
|
|
|
|
Continuation := Msg_Cont;
|
|
Suppress_Message := False;
|
|
Kill_Message := False;
|
|
Set_Msg_Text (Msg, Orig_Loc);
|
|
|
|
-- Kill continuation if parent message killed
|
|
|
|
if Continuation and Last_Killed then
|
|
return;
|
|
end if;
|
|
|
|
-- Return without doing anything if message is suppressed
|
|
|
|
if Suppress_Message
|
|
and not All_Errors_Mode
|
|
and not (Msg (Msg'Last) = '!')
|
|
then
|
|
if not Continuation then
|
|
Last_Killed := True;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- Return without doing anything if message is killed and this
|
|
-- is not the first error message. The philosophy is that if we
|
|
-- get a weird error message and we already have had a message,
|
|
-- then we hope the weird message is a junk cascaded message
|
|
|
|
if Kill_Message
|
|
and then not All_Errors_Mode
|
|
and then Total_Errors_Detected /= 0
|
|
then
|
|
if not Continuation then
|
|
Last_Killed := True;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- Immediate return if warning message and warnings are suppressed
|
|
|
|
if Is_Warning_Msg and then Warnings_Suppressed (Orig_Loc) then
|
|
Cur_Msg := No_Error_Msg;
|
|
return;
|
|
end if;
|
|
|
|
-- If message is to be ignored in special ignore message mode, this is
|
|
-- where we do this special processing, bypassing message output.
|
|
|
|
if Ignore_Errors_Enable > 0 then
|
|
if Is_Serious_Error then
|
|
Handle_Serious_Error;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- Otherwise build error message object for new message
|
|
|
|
Errors.Increment_Last;
|
|
Cur_Msg := Errors.Last;
|
|
Errors.Table (Cur_Msg).Text := new String'(Msg_Buffer (1 .. Msglen));
|
|
Errors.Table (Cur_Msg).Next := No_Error_Msg;
|
|
Errors.Table (Cur_Msg).Sptr := Orig_Loc;
|
|
Errors.Table (Cur_Msg).Fptr := Flag_Location;
|
|
Errors.Table (Cur_Msg).Sfile := Get_Source_File_Index (Orig_Loc);
|
|
Errors.Table (Cur_Msg).Line := Get_Physical_Line_Number (Orig_Loc);
|
|
Errors.Table (Cur_Msg).Col := Get_Column_Number (Orig_Loc);
|
|
Errors.Table (Cur_Msg).Warn := Is_Warning_Msg;
|
|
Errors.Table (Cur_Msg).Serious := Is_Serious_Error;
|
|
Errors.Table (Cur_Msg).Uncond := Is_Unconditional_Msg;
|
|
Errors.Table (Cur_Msg).Msg_Cont := Continuation;
|
|
Errors.Table (Cur_Msg).Deleted := False;
|
|
|
|
-- If immediate errors mode set, output error message now. Also output
|
|
-- now if the -d1 debug flag is set (so node number message comes out
|
|
-- just before actual error message)
|
|
|
|
if Debug_Flag_OO or else Debug_Flag_1 then
|
|
Write_Eol;
|
|
Output_Source_Line (Errors.Table (Cur_Msg).Line,
|
|
Errors.Table (Cur_Msg).Sfile, True);
|
|
Temp_Msg := Cur_Msg;
|
|
Output_Error_Msgs (Temp_Msg);
|
|
|
|
-- If not in immediate errors mode, then we insert the message in the
|
|
-- error chain for later output by Finalize. The messages are sorted
|
|
-- first by unit (main unit comes first), and within a unit by source
|
|
-- location (earlier flag location first in the chain).
|
|
|
|
else
|
|
Prev_Msg := No_Error_Msg;
|
|
Next_Msg := Error_Msgs;
|
|
|
|
while Next_Msg /= No_Error_Msg loop
|
|
exit when
|
|
Errors.Table (Cur_Msg).Sfile < Errors.Table (Next_Msg).Sfile;
|
|
|
|
if Errors.Table (Cur_Msg).Sfile =
|
|
Errors.Table (Next_Msg).Sfile
|
|
then
|
|
exit when Orig_Loc < Errors.Table (Next_Msg).Sptr;
|
|
end if;
|
|
|
|
Prev_Msg := Next_Msg;
|
|
Next_Msg := Errors.Table (Next_Msg).Next;
|
|
end loop;
|
|
|
|
-- Now we insert the new message in the error chain. The insertion
|
|
-- point for the message is after Prev_Msg and before Next_Msg.
|
|
|
|
-- The possible insertion point for the new message is after Prev_Msg
|
|
-- and before Next_Msg. However, this is where we do a special check
|
|
-- for redundant parsing messages, defined as messages posted on the
|
|
-- same line. The idea here is that probably such messages are junk
|
|
-- from the parser recovering. In full errors mode, we don't do this
|
|
-- deletion, but otherwise such messages are discarded at this stage.
|
|
|
|
if Prev_Msg /= No_Error_Msg
|
|
and then Errors.Table (Prev_Msg).Line =
|
|
Errors.Table (Cur_Msg).Line
|
|
and then Errors.Table (Prev_Msg).Sfile =
|
|
Errors.Table (Cur_Msg).Sfile
|
|
and then Compiler_State = Parsing
|
|
and then not All_Errors_Mode
|
|
then
|
|
-- Don't delete unconditional messages and at this stage,
|
|
-- don't delete continuation lines (we attempted to delete
|
|
-- those earlier if the parent message was deleted.
|
|
|
|
if not Errors.Table (Cur_Msg).Uncond
|
|
and then not Continuation
|
|
then
|
|
|
|
-- Don't delete if prev msg is warning and new msg is
|
|
-- an error. This is because we don't want a real error
|
|
-- masked by a warning. In all other cases (that is parse
|
|
-- errors for the same line that are not unconditional)
|
|
-- we do delete the message. This helps to avoid
|
|
-- junk extra messages from cascaded parsing errors
|
|
|
|
if not Errors.Table (Prev_Msg).Warn
|
|
or else Errors.Table (Cur_Msg).Warn
|
|
then
|
|
-- All tests passed, delete the message by simply
|
|
-- returning without any further processing.
|
|
|
|
if not Continuation then
|
|
Last_Killed := True;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
end if;
|
|
end if;
|
|
|
|
-- Come here if message is to be inserted in the error chain
|
|
|
|
if not Continuation then
|
|
Last_Killed := False;
|
|
end if;
|
|
|
|
if Prev_Msg = No_Error_Msg then
|
|
Error_Msgs := Cur_Msg;
|
|
else
|
|
Errors.Table (Prev_Msg).Next := Cur_Msg;
|
|
end if;
|
|
|
|
Errors.Table (Cur_Msg).Next := Next_Msg;
|
|
end if;
|
|
|
|
-- Bump appropriate statistics count
|
|
|
|
if Errors.Table (Cur_Msg).Warn then
|
|
Warnings_Detected := Warnings_Detected + 1;
|
|
else
|
|
Total_Errors_Detected := Total_Errors_Detected + 1;
|
|
|
|
if Errors.Table (Cur_Msg).Serious then
|
|
Serious_Errors_Detected := Serious_Errors_Detected + 1;
|
|
Handle_Serious_Error;
|
|
end if;
|
|
end if;
|
|
|
|
-- Terminate if max errors reached
|
|
|
|
if Total_Errors_Detected + Warnings_Detected = Maximum_Errors then
|
|
raise Unrecoverable_Error;
|
|
end if;
|
|
|
|
end Error_Msg_Internal;
|
|
|
|
-----------------
|
|
-- Error_Msg_N --
|
|
-----------------
|
|
|
|
procedure Error_Msg_N (Msg : String; N : Node_Or_Entity_Id) is
|
|
begin
|
|
Error_Msg_NEL (Msg, N, N, Sloc (N));
|
|
end Error_Msg_N;
|
|
|
|
------------------
|
|
-- Error_Msg_NE --
|
|
------------------
|
|
|
|
procedure Error_Msg_NE
|
|
(Msg : String;
|
|
N : Node_Or_Entity_Id;
|
|
E : Node_Or_Entity_Id)
|
|
is
|
|
begin
|
|
Error_Msg_NEL (Msg, N, E, Sloc (N));
|
|
end Error_Msg_NE;
|
|
|
|
-------------------
|
|
-- Error_Msg_NEL --
|
|
-------------------
|
|
|
|
procedure Error_Msg_NEL
|
|
(Msg : String;
|
|
N : Node_Or_Entity_Id;
|
|
E : Node_Or_Entity_Id;
|
|
Flag_Location : Source_Ptr)
|
|
is
|
|
begin
|
|
if Special_Msg_Delete (Msg, N, E) then
|
|
return;
|
|
end if;
|
|
|
|
if No_Warnings (N) or else No_Warnings (E) then
|
|
Test_Warning_Msg (Msg);
|
|
|
|
if Is_Warning_Msg then
|
|
return;
|
|
end if;
|
|
end if;
|
|
|
|
if All_Errors_Mode
|
|
or else Msg (Msg'Last) = '!'
|
|
or else OK_Node (N)
|
|
or else (Msg (1) = '\' and not Last_Killed)
|
|
then
|
|
Debug_Output (N);
|
|
Error_Msg_Node_1 := E;
|
|
Error_Msg (Msg, Flag_Location);
|
|
|
|
else
|
|
Last_Killed := True;
|
|
end if;
|
|
|
|
if not Is_Warning_Msg then
|
|
Set_Posted (N);
|
|
end if;
|
|
end Error_Msg_NEL;
|
|
|
|
-----------------
|
|
-- Error_Msg_S --
|
|
-----------------
|
|
|
|
procedure Error_Msg_S (Msg : String) is
|
|
begin
|
|
Error_Msg (Msg, Scan_Ptr);
|
|
end Error_Msg_S;
|
|
|
|
------------------
|
|
-- Error_Msg_SC --
|
|
------------------
|
|
|
|
procedure Error_Msg_SC (Msg : String) is
|
|
begin
|
|
-- If we are at end of file, post the flag after the previous token
|
|
|
|
if Token = Tok_EOF then
|
|
Error_Msg_AP (Msg);
|
|
|
|
-- For all other cases the message is posted at the current token
|
|
-- pointer position
|
|
|
|
else
|
|
Error_Msg (Msg, Token_Ptr);
|
|
end if;
|
|
end Error_Msg_SC;
|
|
|
|
------------------
|
|
-- Error_Msg_SP --
|
|
------------------
|
|
|
|
procedure Error_Msg_SP (Msg : String) is
|
|
begin
|
|
-- Note: in the case where there is no previous token, Prev_Token_Ptr
|
|
-- is set to Source_First, which is a reasonable position for the
|
|
-- error flag in this situation
|
|
|
|
Error_Msg (Msg, Prev_Token_Ptr);
|
|
end Error_Msg_SP;
|
|
|
|
--------------
|
|
-- Finalize --
|
|
--------------
|
|
|
|
procedure Finalize is
|
|
Cur : Error_Msg_Id;
|
|
Nxt : Error_Msg_Id;
|
|
E, F : Error_Msg_Id;
|
|
Err_Flag : Boolean;
|
|
|
|
begin
|
|
-- Reset current error source file if the main unit has a pragma
|
|
-- Source_Reference. This ensures outputting the proper name of
|
|
-- the source file in this situation.
|
|
|
|
if Num_SRef_Pragmas (Main_Source_File) /= 0 then
|
|
Current_Error_Source_File := No_Source_File;
|
|
end if;
|
|
|
|
-- Eliminate any duplicated error messages from the list. This is
|
|
-- done after the fact to avoid problems with Change_Error_Text.
|
|
|
|
Cur := Error_Msgs;
|
|
while Cur /= No_Error_Msg loop
|
|
Nxt := Errors.Table (Cur).Next;
|
|
|
|
F := Nxt;
|
|
while F /= No_Error_Msg
|
|
and then Errors.Table (F).Sptr = Errors.Table (Cur).Sptr
|
|
loop
|
|
Check_Duplicate_Message (Cur, F);
|
|
F := Errors.Table (F).Next;
|
|
end loop;
|
|
|
|
Cur := Nxt;
|
|
end loop;
|
|
|
|
-- Brief Error mode
|
|
|
|
if Brief_Output or (not Full_List and not Verbose_Mode) then
|
|
E := Error_Msgs;
|
|
Set_Standard_Error;
|
|
|
|
while E /= No_Error_Msg loop
|
|
if not Errors.Table (E).Deleted and then not Debug_Flag_KK then
|
|
Write_Name (Reference_Name (Errors.Table (E).Sfile));
|
|
Write_Char (':');
|
|
Write_Int (Int (Physical_To_Logical
|
|
(Errors.Table (E).Line,
|
|
Errors.Table (E).Sfile)));
|
|
Write_Char (':');
|
|
|
|
if Errors.Table (E).Col < 10 then
|
|
Write_Char ('0');
|
|
end if;
|
|
|
|
Write_Int (Int (Errors.Table (E).Col));
|
|
Write_Str (": ");
|
|
Output_Msg_Text (E);
|
|
Write_Eol;
|
|
end if;
|
|
|
|
E := Errors.Table (E).Next;
|
|
end loop;
|
|
|
|
Set_Standard_Output;
|
|
end if;
|
|
|
|
-- Full source listing case
|
|
|
|
if Full_List then
|
|
List_Pragmas_Index := 1;
|
|
List_Pragmas_Mode := True;
|
|
E := Error_Msgs;
|
|
Write_Eol;
|
|
|
|
-- First list initial main source file with its error messages
|
|
|
|
for N in 1 .. Last_Source_Line (Main_Source_File) loop
|
|
Err_Flag :=
|
|
E /= No_Error_Msg
|
|
and then Errors.Table (E).Line = N
|
|
and then Errors.Table (E).Sfile = Main_Source_File;
|
|
|
|
Output_Source_Line (N, Main_Source_File, Err_Flag);
|
|
|
|
if Err_Flag then
|
|
Output_Error_Msgs (E);
|
|
|
|
if not Debug_Flag_2 then
|
|
Write_Eol;
|
|
end if;
|
|
end if;
|
|
|
|
end loop;
|
|
|
|
-- Then output errors, if any, for subsidiary units
|
|
|
|
while E /= No_Error_Msg
|
|
and then Errors.Table (E).Sfile /= Main_Source_File
|
|
loop
|
|
Write_Eol;
|
|
Output_Source_Line
|
|
(Errors.Table (E).Line, Errors.Table (E).Sfile, True);
|
|
Output_Error_Msgs (E);
|
|
end loop;
|
|
end if;
|
|
|
|
-- Verbose mode (error lines only with error flags)
|
|
|
|
if Verbose_Mode and not Full_List then
|
|
E := Error_Msgs;
|
|
|
|
-- Loop through error lines
|
|
|
|
while E /= No_Error_Msg loop
|
|
Write_Eol;
|
|
Output_Source_Line
|
|
(Errors.Table (E).Line, Errors.Table (E).Sfile, True);
|
|
Output_Error_Msgs (E);
|
|
end loop;
|
|
end if;
|
|
|
|
-- Output error summary if verbose or full list mode
|
|
|
|
if Verbose_Mode or else Full_List then
|
|
|
|
-- Extra blank line if error messages or source listing were output
|
|
|
|
if Total_Errors_Detected + Warnings_Detected > 0
|
|
or else Full_List
|
|
then
|
|
Write_Eol;
|
|
end if;
|
|
|
|
-- Message giving number of lines read and number of errors detected.
|
|
-- This normally goes to Standard_Output. The exception is when brief
|
|
-- mode is not set, verbose mode (or full list mode) is set, and
|
|
-- there are errors. In this case we send the message to standard
|
|
-- error to make sure that *something* appears on standard error in
|
|
-- an error situation.
|
|
|
|
-- Formerly, only the "# errors" suffix was sent to stderr, whereas
|
|
-- "# lines:" appeared on stdout. This caused problems on VMS when
|
|
-- the stdout buffer was flushed, giving an extra line feed after
|
|
-- the prefix.
|
|
|
|
if Total_Errors_Detected + Warnings_Detected /= 0
|
|
and then not Brief_Output
|
|
and then (Verbose_Mode or Full_List)
|
|
then
|
|
Set_Standard_Error;
|
|
end if;
|
|
|
|
-- Message giving total number of lines
|
|
|
|
Write_Str (" ");
|
|
Write_Int (Num_Source_Lines (Main_Source_File));
|
|
|
|
if Num_Source_Lines (Main_Source_File) = 1 then
|
|
Write_Str (" line: ");
|
|
else
|
|
Write_Str (" lines: ");
|
|
end if;
|
|
|
|
if Total_Errors_Detected = 0 then
|
|
Write_Str ("No errors");
|
|
|
|
elsif Total_Errors_Detected = 1 then
|
|
Write_Str ("1 error");
|
|
|
|
else
|
|
Write_Int (Total_Errors_Detected);
|
|
Write_Str (" errors");
|
|
end if;
|
|
|
|
if Warnings_Detected /= 0 then
|
|
Write_Str (", ");
|
|
Write_Int (Warnings_Detected);
|
|
Write_Str (" warning");
|
|
|
|
if Warnings_Detected /= 1 then
|
|
Write_Char ('s');
|
|
end if;
|
|
|
|
if Warning_Mode = Treat_As_Error then
|
|
Write_Str (" (treated as error");
|
|
|
|
if Warnings_Detected /= 1 then
|
|
Write_Char ('s');
|
|
end if;
|
|
|
|
Write_Char (')');
|
|
end if;
|
|
end if;
|
|
|
|
Write_Eol;
|
|
Set_Standard_Output;
|
|
end if;
|
|
|
|
if Maximum_Errors /= 0
|
|
and then Total_Errors_Detected + Warnings_Detected = Maximum_Errors
|
|
then
|
|
Set_Standard_Error;
|
|
Write_Str ("fatal error: maximum errors reached");
|
|
Write_Eol;
|
|
Set_Standard_Output;
|
|
end if;
|
|
|
|
if Warning_Mode = Treat_As_Error then
|
|
Total_Errors_Detected := Total_Errors_Detected + Warnings_Detected;
|
|
Warnings_Detected := 0;
|
|
end if;
|
|
|
|
end Finalize;
|
|
|
|
------------------
|
|
-- Get_Location --
|
|
------------------
|
|
|
|
function Get_Location (E : Error_Msg_Id) return Source_Ptr is
|
|
begin
|
|
return Errors.Table (E).Sptr;
|
|
end Get_Location;
|
|
|
|
----------------
|
|
-- Get_Msg_Id --
|
|
----------------
|
|
|
|
function Get_Msg_Id return Error_Msg_Id is
|
|
begin
|
|
return Cur_Msg;
|
|
end Get_Msg_Id;
|
|
|
|
----------------
|
|
-- Initialize --
|
|
----------------
|
|
|
|
procedure Initialize is
|
|
begin
|
|
Errors.Init;
|
|
Error_Msgs := No_Error_Msg;
|
|
Serious_Errors_Detected := 0;
|
|
Total_Errors_Detected := 0;
|
|
Warnings_Detected := 0;
|
|
Cur_Msg := No_Error_Msg;
|
|
List_Pragmas.Init;
|
|
|
|
-- Initialize warnings table, if all warnings are suppressed, supply
|
|
-- an initial dummy entry covering all possible source locations.
|
|
|
|
Warnings.Init;
|
|
|
|
if Warning_Mode = Suppress then
|
|
Warnings.Increment_Last;
|
|
Warnings.Table (Warnings.Last).Start := Source_Ptr'First;
|
|
Warnings.Table (Warnings.Last).Stop := Source_Ptr'Last;
|
|
end if;
|
|
|
|
end Initialize;
|
|
|
|
-----------------
|
|
-- No_Warnings --
|
|
-----------------
|
|
|
|
function No_Warnings (N : Node_Or_Entity_Id) return Boolean is
|
|
begin
|
|
if Error_Posted (N) then
|
|
return True;
|
|
|
|
elsif Nkind (N) in N_Entity and then Warnings_Off (N) then
|
|
return True;
|
|
|
|
elsif Is_Entity_Name (N)
|
|
and then Present (Entity (N))
|
|
and then Warnings_Off (Entity (N))
|
|
then
|
|
return True;
|
|
|
|
else
|
|
return False;
|
|
end if;
|
|
end No_Warnings;
|
|
|
|
-------------
|
|
-- OK_Node --
|
|
-------------
|
|
|
|
function OK_Node (N : Node_Id) return Boolean is
|
|
K : constant Node_Kind := Nkind (N);
|
|
|
|
begin
|
|
if Error_Posted (N) then
|
|
return False;
|
|
|
|
elsif K in N_Has_Etype
|
|
and then Present (Etype (N))
|
|
and then Error_Posted (Etype (N))
|
|
then
|
|
return False;
|
|
|
|
elsif (K in N_Op
|
|
or else K = N_Attribute_Reference
|
|
or else K = N_Character_Literal
|
|
or else K = N_Expanded_Name
|
|
or else K = N_Identifier
|
|
or else K = N_Operator_Symbol)
|
|
and then Present (Entity (N))
|
|
and then Error_Posted (Entity (N))
|
|
then
|
|
return False;
|
|
else
|
|
return True;
|
|
end if;
|
|
end OK_Node;
|
|
|
|
-----------------------
|
|
-- Output_Error_Msgs --
|
|
-----------------------
|
|
|
|
procedure Output_Error_Msgs (E : in out Error_Msg_Id) is
|
|
P : Source_Ptr;
|
|
T : Error_Msg_Id;
|
|
S : Error_Msg_Id;
|
|
|
|
Flag_Num : Pos;
|
|
Mult_Flags : Boolean := False;
|
|
|
|
begin
|
|
S := E;
|
|
|
|
-- Skip deleted messages at start
|
|
|
|
if Errors.Table (S).Deleted then
|
|
Set_Next_Non_Deleted_Msg (S);
|
|
end if;
|
|
|
|
-- Figure out if we will place more than one error flag on this line
|
|
|
|
T := S;
|
|
while T /= No_Error_Msg
|
|
and then Errors.Table (T).Line = Errors.Table (E).Line
|
|
and then Errors.Table (T).Sfile = Errors.Table (E).Sfile
|
|
loop
|
|
if Errors.Table (T).Sptr > Errors.Table (E).Sptr then
|
|
Mult_Flags := True;
|
|
end if;
|
|
|
|
Set_Next_Non_Deleted_Msg (T);
|
|
end loop;
|
|
|
|
-- Output the error flags. The circuit here makes sure that the tab
|
|
-- characters in the original line are properly accounted for. The
|
|
-- eight blanks at the start are to match the line number.
|
|
|
|
if not Debug_Flag_2 then
|
|
Write_Str (" ");
|
|
P := Line_Start (Errors.Table (E).Sptr);
|
|
Flag_Num := 1;
|
|
|
|
-- Loop through error messages for this line to place flags
|
|
|
|
T := S;
|
|
while T /= No_Error_Msg
|
|
and then Errors.Table (T).Line = Errors.Table (E).Line
|
|
and then Errors.Table (T).Sfile = Errors.Table (E).Sfile
|
|
loop
|
|
-- Loop to output blanks till current flag position
|
|
|
|
while P < Errors.Table (T).Sptr loop
|
|
if Source_Text (Errors.Table (T).Sfile) (P) = ASCII.HT then
|
|
Write_Char (ASCII.HT);
|
|
else
|
|
Write_Char (' ');
|
|
end if;
|
|
|
|
P := P + 1;
|
|
end loop;
|
|
|
|
-- Output flag (unless already output, this happens if more
|
|
-- than one error message occurs at the same flag position).
|
|
|
|
if P = Errors.Table (T).Sptr then
|
|
if (Flag_Num = 1 and then not Mult_Flags)
|
|
or else Flag_Num > 9
|
|
then
|
|
Write_Char ('|');
|
|
else
|
|
Write_Char (Character'Val (Character'Pos ('0') + Flag_Num));
|
|
end if;
|
|
|
|
P := P + 1;
|
|
end if;
|
|
|
|
Set_Next_Non_Deleted_Msg (T);
|
|
Flag_Num := Flag_Num + 1;
|
|
end loop;
|
|
|
|
Write_Eol;
|
|
end if;
|
|
|
|
-- Now output the error messages
|
|
|
|
T := S;
|
|
while T /= No_Error_Msg
|
|
and then Errors.Table (T).Line = Errors.Table (E).Line
|
|
and then Errors.Table (T).Sfile = Errors.Table (E).Sfile
|
|
|
|
loop
|
|
Write_Str (" >>> ");
|
|
Output_Msg_Text (T);
|
|
|
|
if Debug_Flag_2 then
|
|
while Column < 74 loop
|
|
Write_Char (' ');
|
|
end loop;
|
|
|
|
Write_Str (" <<<");
|
|
end if;
|
|
|
|
Write_Eol;
|
|
Set_Next_Non_Deleted_Msg (T);
|
|
end loop;
|
|
|
|
E := T;
|
|
end Output_Error_Msgs;
|
|
|
|
------------------------
|
|
-- Output_Line_Number --
|
|
------------------------
|
|
|
|
procedure Output_Line_Number (L : Logical_Line_Number) is
|
|
D : Int; -- next digit
|
|
C : Character; -- next character
|
|
Z : Boolean; -- flag for zero suppress
|
|
N, M : Int; -- temporaries
|
|
|
|
begin
|
|
if L = No_Line_Number then
|
|
Write_Str (" ");
|
|
|
|
else
|
|
Z := False;
|
|
N := Int (L);
|
|
|
|
M := 100_000;
|
|
while M /= 0 loop
|
|
D := Int (N / M);
|
|
N := N rem M;
|
|
M := M / 10;
|
|
|
|
if D = 0 then
|
|
if Z then
|
|
C := '0';
|
|
else
|
|
C := ' ';
|
|
end if;
|
|
else
|
|
Z := True;
|
|
C := Character'Val (D + 48);
|
|
end if;
|
|
|
|
Write_Char (C);
|
|
end loop;
|
|
|
|
Write_Str (". ");
|
|
end if;
|
|
end Output_Line_Number;
|
|
|
|
---------------------
|
|
-- Output_Msg_Text --
|
|
---------------------
|
|
|
|
procedure Output_Msg_Text (E : Error_Msg_Id) is
|
|
begin
|
|
if Errors.Table (E).Warn then
|
|
if Errors.Table (E).Text'Length > 7
|
|
and then Errors.Table (E).Text (1 .. 7) /= "(style)"
|
|
then
|
|
Write_Str ("warning: ");
|
|
end if;
|
|
|
|
elsif Opt.Unique_Error_Tag then
|
|
Write_Str ("error: ");
|
|
end if;
|
|
|
|
Write_Str (Errors.Table (E).Text.all);
|
|
end Output_Msg_Text;
|
|
|
|
------------------------
|
|
-- Output_Source_Line --
|
|
------------------------
|
|
|
|
procedure Output_Source_Line
|
|
(L : Physical_Line_Number;
|
|
Sfile : Source_File_Index;
|
|
Errs : Boolean)
|
|
is
|
|
S : Source_Ptr;
|
|
C : Character;
|
|
|
|
Line_Number_Output : Boolean := False;
|
|
-- Set True once line number is output
|
|
|
|
begin
|
|
if Sfile /= Current_Error_Source_File then
|
|
Write_Str ("==============Error messages for source file: ");
|
|
Write_Name (Full_File_Name (Sfile));
|
|
Write_Eol;
|
|
|
|
if Num_SRef_Pragmas (Sfile) > 0 then
|
|
Write_Str ("--------------Line numbers from file: ");
|
|
Write_Name (Full_Ref_Name (Sfile));
|
|
|
|
-- Write starting line, except do not write it if we had more
|
|
-- than one source reference pragma, since in this case there
|
|
-- is no very useful number to write.
|
|
|
|
Write_Str (" (starting at line ");
|
|
Write_Int (Int (First_Mapped_Line (Sfile)));
|
|
Write_Char (')');
|
|
Write_Eol;
|
|
end if;
|
|
|
|
Current_Error_Source_File := Sfile;
|
|
end if;
|
|
|
|
if Errs or List_Pragmas_Mode then
|
|
Output_Line_Number (Physical_To_Logical (L, Sfile));
|
|
Line_Number_Output := True;
|
|
end if;
|
|
|
|
S := Line_Start (L, Sfile);
|
|
|
|
loop
|
|
C := Source_Text (Sfile) (S);
|
|
exit when C = ASCII.LF or else C = ASCII.CR or else C = EOF;
|
|
|
|
-- Deal with matching entry in List_Pragmas table
|
|
|
|
if Full_List
|
|
and then List_Pragmas_Index <= List_Pragmas.Last
|
|
and then S = List_Pragmas.Table (List_Pragmas_Index).Ploc
|
|
then
|
|
case List_Pragmas.Table (List_Pragmas_Index).Ptyp is
|
|
when Page =>
|
|
Write_Char (C);
|
|
|
|
-- Ignore if on line with errors so that error flags
|
|
-- get properly listed with the error line .
|
|
|
|
if not Errs then
|
|
Write_Char (ASCII.FF);
|
|
end if;
|
|
|
|
when List_On =>
|
|
List_Pragmas_Mode := True;
|
|
|
|
if not Line_Number_Output then
|
|
Output_Line_Number (Physical_To_Logical (L, Sfile));
|
|
Line_Number_Output := True;
|
|
end if;
|
|
|
|
Write_Char (C);
|
|
|
|
when List_Off =>
|
|
Write_Char (C);
|
|
List_Pragmas_Mode := False;
|
|
end case;
|
|
|
|
List_Pragmas_Index := List_Pragmas_Index + 1;
|
|
|
|
-- Normal case (no matching entry in List_Pragmas table)
|
|
|
|
else
|
|
if Errs or List_Pragmas_Mode then
|
|
Write_Char (C);
|
|
end if;
|
|
end if;
|
|
|
|
S := S + 1;
|
|
end loop;
|
|
|
|
if Line_Number_Output then
|
|
Write_Eol;
|
|
end if;
|
|
end Output_Source_Line;
|
|
|
|
--------------------
|
|
-- Purge_Messages --
|
|
--------------------
|
|
|
|
procedure Purge_Messages (From : Source_Ptr; To : Source_Ptr) is
|
|
E : Error_Msg_Id;
|
|
|
|
function To_Be_Purged (E : Error_Msg_Id) return Boolean;
|
|
-- Returns True for a message that is to be purged. Also adjusts
|
|
-- error counts appropriately.
|
|
|
|
function To_Be_Purged (E : Error_Msg_Id) return Boolean is
|
|
begin
|
|
if E /= No_Error_Msg
|
|
and then Errors.Table (E).Sptr > From
|
|
and then Errors.Table (E).Sptr < To
|
|
then
|
|
if Errors.Table (E).Warn then
|
|
Warnings_Detected := Warnings_Detected - 1;
|
|
else
|
|
Total_Errors_Detected := Total_Errors_Detected - 1;
|
|
|
|
if Errors.Table (E).Serious then
|
|
Serious_Errors_Detected := Serious_Errors_Detected - 1;
|
|
end if;
|
|
end if;
|
|
|
|
return True;
|
|
|
|
else
|
|
return False;
|
|
end if;
|
|
end To_Be_Purged;
|
|
|
|
-- Start of processing for Purge_Messages
|
|
|
|
begin
|
|
while To_Be_Purged (Error_Msgs) loop
|
|
Error_Msgs := Errors.Table (Error_Msgs).Next;
|
|
end loop;
|
|
|
|
E := Error_Msgs;
|
|
while E /= No_Error_Msg loop
|
|
while To_Be_Purged (Errors.Table (E).Next) loop
|
|
Errors.Table (E).Next :=
|
|
Errors.Table (Errors.Table (E).Next).Next;
|
|
end loop;
|
|
|
|
E := Errors.Table (E).Next;
|
|
end loop;
|
|
end Purge_Messages;
|
|
|
|
-----------------------------
|
|
-- Remove_Warning_Messages --
|
|
-----------------------------
|
|
|
|
procedure Remove_Warning_Messages (N : Node_Id) is
|
|
|
|
function Check_For_Warning (N : Node_Id) return Traverse_Result;
|
|
-- This function checks one node for a possible warning message.
|
|
|
|
function Check_All_Warnings is new
|
|
Traverse_Func (Check_For_Warning);
|
|
-- This defines the traversal operation
|
|
|
|
-----------------------
|
|
-- Check_For_Warning --
|
|
-----------------------
|
|
|
|
function Check_For_Warning (N : Node_Id) return Traverse_Result is
|
|
Loc : constant Source_Ptr := Sloc (N);
|
|
E : Error_Msg_Id;
|
|
|
|
function To_Be_Removed (E : Error_Msg_Id) return Boolean;
|
|
-- Returns True for a message that is to be removed. Also adjusts
|
|
-- warning count appropriately.
|
|
|
|
-------------------
|
|
-- To_Be_Removed --
|
|
-------------------
|
|
|
|
function To_Be_Removed (E : Error_Msg_Id) return Boolean is
|
|
begin
|
|
if E /= No_Error_Msg
|
|
and then Errors.Table (E).Fptr = Loc
|
|
and then Errors.Table (E).Warn
|
|
then
|
|
Warnings_Detected := Warnings_Detected - 1;
|
|
return True;
|
|
else
|
|
return False;
|
|
end if;
|
|
end To_Be_Removed;
|
|
|
|
-- Start of processing for Check_For_Warnings
|
|
|
|
begin
|
|
while To_Be_Removed (Error_Msgs) loop
|
|
Error_Msgs := Errors.Table (Error_Msgs).Next;
|
|
end loop;
|
|
|
|
E := Error_Msgs;
|
|
while E /= No_Error_Msg loop
|
|
while To_Be_Removed (Errors.Table (E).Next) loop
|
|
Errors.Table (E).Next :=
|
|
Errors.Table (Errors.Table (E).Next).Next;
|
|
end loop;
|
|
|
|
E := Errors.Table (E).Next;
|
|
end loop;
|
|
|
|
if Nkind (N) = N_Raise_Constraint_Error
|
|
and then Original_Node (N) /= N
|
|
and then No (Condition (N))
|
|
then
|
|
-- Warnings may have been posted on subexpressions of
|
|
-- the original tree. We place the original node back
|
|
-- on the tree to remove those warnings, whose sloc
|
|
-- do not match those of any node in the current tree.
|
|
-- Given that we are in unreachable code, this modification
|
|
-- to the tree is harmless.
|
|
|
|
declare
|
|
Status : Traverse_Result;
|
|
|
|
begin
|
|
if Is_List_Member (N) then
|
|
Set_Condition (N, Original_Node (N));
|
|
Status := Check_All_Warnings (Condition (N));
|
|
else
|
|
Rewrite (N, Original_Node (N));
|
|
Status := Check_All_Warnings (N);
|
|
end if;
|
|
|
|
return Status;
|
|
end;
|
|
|
|
else
|
|
return OK;
|
|
end if;
|
|
end Check_For_Warning;
|
|
|
|
-- Start of processing for Remove_Warning_Messages
|
|
|
|
begin
|
|
if Warnings_Detected /= 0 then
|
|
declare
|
|
Discard : Traverse_Result;
|
|
begin
|
|
Discard := Check_All_Warnings (N);
|
|
end;
|
|
end if;
|
|
end Remove_Warning_Messages;
|
|
|
|
----------------
|
|
-- Same_Error --
|
|
----------------
|
|
|
|
function Same_Error (M1, M2 : Error_Msg_Id) return Boolean is
|
|
Msg1 : constant String_Ptr := Errors.Table (M1).Text;
|
|
Msg2 : constant String_Ptr := Errors.Table (M2).Text;
|
|
|
|
Msg2_Len : constant Integer := Msg2'Length;
|
|
Msg1_Len : constant Integer := Msg1'Length;
|
|
|
|
begin
|
|
return
|
|
Msg1.all = Msg2.all
|
|
or else
|
|
(Msg1_Len - 10 > Msg2_Len
|
|
and then
|
|
Msg2.all = Msg1.all (1 .. Msg2_Len)
|
|
and then
|
|
Msg1 (Msg2_Len + 1 .. Msg2_Len + 10) = ", instance")
|
|
or else
|
|
(Msg2_Len - 10 > Msg1_Len
|
|
and then
|
|
Msg1.all = Msg2.all (1 .. Msg1_Len)
|
|
and then
|
|
Msg2 (Msg1_Len + 1 .. Msg1_Len + 10) = ", instance");
|
|
end Same_Error;
|
|
|
|
-------------------
|
|
-- Set_Msg_Blank --
|
|
-------------------
|
|
|
|
procedure Set_Msg_Blank is
|
|
begin
|
|
if Msglen > 0
|
|
and then Msg_Buffer (Msglen) /= ' '
|
|
and then Msg_Buffer (Msglen) /= '('
|
|
and then not Manual_Quote_Mode
|
|
then
|
|
Set_Msg_Char (' ');
|
|
end if;
|
|
end Set_Msg_Blank;
|
|
|
|
-------------------------------
|
|
-- Set_Msg_Blank_Conditional --
|
|
-------------------------------
|
|
|
|
procedure Set_Msg_Blank_Conditional is
|
|
begin
|
|
if Msglen > 0
|
|
and then Msg_Buffer (Msglen) /= ' '
|
|
and then Msg_Buffer (Msglen) /= '('
|
|
and then Msg_Buffer (Msglen) /= '"'
|
|
and then not Manual_Quote_Mode
|
|
then
|
|
Set_Msg_Char (' ');
|
|
end if;
|
|
end Set_Msg_Blank_Conditional;
|
|
|
|
------------------
|
|
-- Set_Msg_Char --
|
|
------------------
|
|
|
|
procedure Set_Msg_Char (C : Character) is
|
|
begin
|
|
|
|
-- The check for message buffer overflow is needed to deal with cases
|
|
-- where insertions get too long (in particular a child unit name can
|
|
-- be very long).
|
|
|
|
if Msglen < Max_Msg_Length then
|
|
Msglen := Msglen + 1;
|
|
Msg_Buffer (Msglen) := C;
|
|
end if;
|
|
end Set_Msg_Char;
|
|
|
|
------------------------------
|
|
-- Set_Msg_Insertion_Column --
|
|
------------------------------
|
|
|
|
procedure Set_Msg_Insertion_Column is
|
|
begin
|
|
if Style.RM_Column_Check then
|
|
Set_Msg_Str (" in column ");
|
|
Set_Msg_Int (Int (Error_Msg_Col) + 1);
|
|
end if;
|
|
end Set_Msg_Insertion_Column;
|
|
|
|
---------------------------------
|
|
-- Set_Msg_Insertion_File_Name --
|
|
---------------------------------
|
|
|
|
procedure Set_Msg_Insertion_File_Name is
|
|
begin
|
|
if Error_Msg_Name_1 = No_Name then
|
|
null;
|
|
|
|
elsif Error_Msg_Name_1 = Error_Name then
|
|
Set_Msg_Blank;
|
|
Set_Msg_Str ("<error>");
|
|
|
|
else
|
|
Set_Msg_Blank;
|
|
Get_Name_String (Error_Msg_Name_1);
|
|
Set_Msg_Quote;
|
|
Set_Msg_Name_Buffer;
|
|
Set_Msg_Quote;
|
|
end if;
|
|
|
|
-- The following assignments ensure that the second and third percent
|
|
-- insertion characters will correspond to the Error_Msg_Name_2 and
|
|
-- Error_Msg_Name_3 as required.
|
|
|
|
Error_Msg_Name_1 := Error_Msg_Name_2;
|
|
Error_Msg_Name_2 := Error_Msg_Name_3;
|
|
|
|
end Set_Msg_Insertion_File_Name;
|
|
|
|
-----------------------------------
|
|
-- Set_Msg_Insertion_Line_Number --
|
|
-----------------------------------
|
|
|
|
procedure Set_Msg_Insertion_Line_Number (Loc, Flag : Source_Ptr) is
|
|
Sindex_Loc : Source_File_Index;
|
|
Sindex_Flag : Source_File_Index;
|
|
|
|
begin
|
|
Set_Msg_Blank;
|
|
|
|
if Loc = No_Location then
|
|
Set_Msg_Str ("at unknown location");
|
|
|
|
elsif Loc <= Standard_Location then
|
|
Set_Msg_Str ("in package Standard");
|
|
|
|
if Loc = Standard_ASCII_Location then
|
|
Set_Msg_Str (".ASCII");
|
|
end if;
|
|
|
|
else
|
|
-- Add "at file-name:" if reference is to other than the source
|
|
-- file in which the error message is placed. Note that we check
|
|
-- full file names, rather than just the source indexes, to
|
|
-- deal with generic instantiations from the current file.
|
|
|
|
Sindex_Loc := Get_Source_File_Index (Loc);
|
|
Sindex_Flag := Get_Source_File_Index (Flag);
|
|
|
|
if Full_File_Name (Sindex_Loc) /= Full_File_Name (Sindex_Flag) then
|
|
Set_Msg_Str ("at ");
|
|
Get_Name_String
|
|
(Reference_Name (Get_Source_File_Index (Loc)));
|
|
Set_Msg_Name_Buffer;
|
|
Set_Msg_Char (':');
|
|
|
|
-- If in current file, add text "at line "
|
|
|
|
else
|
|
Set_Msg_Str ("at line ");
|
|
end if;
|
|
|
|
-- Output line number for reference
|
|
|
|
Set_Msg_Int (Int (Get_Logical_Line_Number (Loc)));
|
|
|
|
-- Deal with the instantiation case. We may have a reference to,
|
|
-- e.g. a type, that is declared within a generic template, and
|
|
-- what we are really referring to is the occurrence in an instance.
|
|
-- In this case, the line number of the instantiation is also of
|
|
-- interest, and we add a notation:
|
|
|
|
-- , instance at xxx
|
|
|
|
-- where xxx is a line number output using this same routine (and
|
|
-- the recursion can go further if the instantiation is itself in
|
|
-- a generic template).
|
|
|
|
-- The flag location passed to us in this situation is indeed the
|
|
-- line number within the template, but as described in Sinput.L
|
|
-- (file sinput-l.ads, section "Handling Generic Instantiations")
|
|
-- we can retrieve the location of the instantiation itself from
|
|
-- this flag location value.
|
|
|
|
-- Note: this processing is suppressed if Suppress_Instance_Location
|
|
-- is set True. This is used to prevent redundant annotations of the
|
|
-- location of the instantiation in the case where we are placing
|
|
-- the messages on the instantiation in any case.
|
|
|
|
if Instantiation (Sindex_Loc) /= No_Location
|
|
and then not Suppress_Instance_Location
|
|
then
|
|
Set_Msg_Str (", instance ");
|
|
Set_Msg_Insertion_Line_Number (Instantiation (Sindex_Loc), Flag);
|
|
end if;
|
|
end if;
|
|
end Set_Msg_Insertion_Line_Number;
|
|
|
|
----------------------------
|
|
-- Set_Msg_Insertion_Name --
|
|
----------------------------
|
|
|
|
procedure Set_Msg_Insertion_Name is
|
|
begin
|
|
if Error_Msg_Name_1 = No_Name then
|
|
null;
|
|
|
|
elsif Error_Msg_Name_1 = Error_Name then
|
|
Set_Msg_Blank;
|
|
Set_Msg_Str ("<error>");
|
|
|
|
else
|
|
Set_Msg_Blank_Conditional;
|
|
Get_Unqualified_Decoded_Name_String (Error_Msg_Name_1);
|
|
|
|
-- Remove %s or %b at end. These come from unit names. If the
|
|
-- caller wanted the (unit) or (body), then they would have used
|
|
-- the $ insertion character. Certainly no error message should
|
|
-- ever have %b or %s explicitly occurring.
|
|
|
|
if Name_Len > 2
|
|
and then Name_Buffer (Name_Len - 1) = '%'
|
|
and then (Name_Buffer (Name_Len) = 'b'
|
|
or else
|
|
Name_Buffer (Name_Len) = 's')
|
|
then
|
|
Name_Len := Name_Len - 2;
|
|
end if;
|
|
|
|
-- Remove upper case letter at end, again, we should not be getting
|
|
-- such names, and what we hope is that the remainder makes sense.
|
|
|
|
if Name_Len > 1
|
|
and then Name_Buffer (Name_Len) in 'A' .. 'Z'
|
|
then
|
|
Name_Len := Name_Len - 1;
|
|
end if;
|
|
|
|
-- If operator name or character literal name, just print it as is
|
|
-- Also print as is if it ends in a right paren (case of x'val(nnn))
|
|
|
|
if Name_Buffer (1) = '"'
|
|
or else Name_Buffer (1) = '''
|
|
or else Name_Buffer (Name_Len) = ')'
|
|
then
|
|
Set_Msg_Name_Buffer;
|
|
|
|
-- Else output with surrounding quotes in proper casing mode
|
|
|
|
else
|
|
Set_Casing (Identifier_Casing (Flag_Source), Mixed_Case);
|
|
Set_Msg_Quote;
|
|
Set_Msg_Name_Buffer;
|
|
Set_Msg_Quote;
|
|
end if;
|
|
end if;
|
|
|
|
-- The following assignments ensure that the second and third percent
|
|
-- insertion characters will correspond to the Error_Msg_Name_2 and
|
|
-- Error_Msg_Name_3 as required.
|
|
|
|
Error_Msg_Name_1 := Error_Msg_Name_2;
|
|
Error_Msg_Name_2 := Error_Msg_Name_3;
|
|
|
|
end Set_Msg_Insertion_Name;
|
|
|
|
----------------------------
|
|
-- Set_Msg_Insertion_Node --
|
|
----------------------------
|
|
|
|
procedure Set_Msg_Insertion_Node is
|
|
begin
|
|
Suppress_Message :=
|
|
Error_Msg_Node_1 = Error
|
|
or else Error_Msg_Node_1 = Any_Type;
|
|
|
|
if Error_Msg_Node_1 = Empty then
|
|
Set_Msg_Blank_Conditional;
|
|
Set_Msg_Str ("<empty>");
|
|
|
|
elsif Error_Msg_Node_1 = Error then
|
|
Set_Msg_Blank;
|
|
Set_Msg_Str ("<error>");
|
|
|
|
elsif Error_Msg_Node_1 = Standard_Void_Type then
|
|
Set_Msg_Blank;
|
|
Set_Msg_Str ("procedure name");
|
|
|
|
else
|
|
Set_Msg_Blank_Conditional;
|
|
|
|
-- Skip quotes for operator case
|
|
|
|
if Nkind (Error_Msg_Node_1) in N_Op then
|
|
Set_Msg_Node (Error_Msg_Node_1);
|
|
|
|
else
|
|
Set_Msg_Quote;
|
|
Set_Qualification (Error_Msg_Qual_Level, Error_Msg_Node_1);
|
|
Set_Msg_Node (Error_Msg_Node_1);
|
|
Set_Msg_Quote;
|
|
end if;
|
|
end if;
|
|
|
|
-- The following assignment ensures that a second ampersand insertion
|
|
-- character will correspond to the Error_Msg_Node_2 parameter.
|
|
|
|
Error_Msg_Node_1 := Error_Msg_Node_2;
|
|
|
|
end Set_Msg_Insertion_Node;
|
|
|
|
-------------------------------------
|
|
-- Set_Msg_Insertion_Reserved_Name --
|
|
-------------------------------------
|
|
|
|
procedure Set_Msg_Insertion_Reserved_Name is
|
|
begin
|
|
Set_Msg_Blank_Conditional;
|
|
Get_Name_String (Error_Msg_Name_1);
|
|
Set_Msg_Quote;
|
|
Set_Casing (Keyword_Casing (Flag_Source), All_Lower_Case);
|
|
Set_Msg_Name_Buffer;
|
|
Set_Msg_Quote;
|
|
end Set_Msg_Insertion_Reserved_Name;
|
|
|
|
-------------------------------------
|
|
-- Set_Msg_Insertion_Reserved_Word --
|
|
-------------------------------------
|
|
|
|
procedure Set_Msg_Insertion_Reserved_Word
|
|
(Text : String;
|
|
J : in out Integer)
|
|
is
|
|
begin
|
|
Set_Msg_Blank_Conditional;
|
|
Name_Len := 0;
|
|
|
|
while J <= Text'Last and then Text (J) in 'A' .. 'Z' loop
|
|
Name_Len := Name_Len + 1;
|
|
Name_Buffer (Name_Len) := Text (J);
|
|
J := J + 1;
|
|
end loop;
|
|
|
|
Set_Casing (Keyword_Casing (Flag_Source), All_Lower_Case);
|
|
Set_Msg_Quote;
|
|
Set_Msg_Name_Buffer;
|
|
Set_Msg_Quote;
|
|
end Set_Msg_Insertion_Reserved_Word;
|
|
|
|
--------------------------------------
|
|
-- Set_Msg_Insertion_Type_Reference --
|
|
--------------------------------------
|
|
|
|
procedure Set_Msg_Insertion_Type_Reference (Flag : Source_Ptr) is
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
Set_Msg_Blank;
|
|
|
|
if Error_Msg_Node_1 = Standard_Void_Type then
|
|
Set_Msg_Str ("package or procedure name");
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Standard_Exception_Type then
|
|
Set_Msg_Str ("exception name");
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Any_Access
|
|
or else Error_Msg_Node_1 = Any_Array
|
|
or else Error_Msg_Node_1 = Any_Boolean
|
|
or else Error_Msg_Node_1 = Any_Character
|
|
or else Error_Msg_Node_1 = Any_Composite
|
|
or else Error_Msg_Node_1 = Any_Discrete
|
|
or else Error_Msg_Node_1 = Any_Fixed
|
|
or else Error_Msg_Node_1 = Any_Integer
|
|
or else Error_Msg_Node_1 = Any_Modular
|
|
or else Error_Msg_Node_1 = Any_Numeric
|
|
or else Error_Msg_Node_1 = Any_Real
|
|
or else Error_Msg_Node_1 = Any_Scalar
|
|
or else Error_Msg_Node_1 = Any_String
|
|
then
|
|
Get_Unqualified_Decoded_Name_String (Chars (Error_Msg_Node_1));
|
|
Set_Msg_Name_Buffer;
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Universal_Real then
|
|
Set_Msg_Str ("type universal real");
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Universal_Integer then
|
|
Set_Msg_Str ("type universal integer");
|
|
return;
|
|
|
|
elsif Error_Msg_Node_1 = Universal_Fixed then
|
|
Set_Msg_Str ("type universal fixed");
|
|
return;
|
|
end if;
|
|
|
|
-- Special case of anonymous array
|
|
|
|
if Nkind (Error_Msg_Node_1) in N_Entity
|
|
and then Is_Array_Type (Error_Msg_Node_1)
|
|
and then Present (Related_Array_Object (Error_Msg_Node_1))
|
|
then
|
|
Set_Msg_Str ("type of ");
|
|
Set_Msg_Node (Related_Array_Object (Error_Msg_Node_1));
|
|
Set_Msg_Str (" declared");
|
|
Set_Msg_Insertion_Line_Number
|
|
(Sloc (Related_Array_Object (Error_Msg_Node_1)), Flag);
|
|
return;
|
|
end if;
|
|
|
|
-- If we fall through, it is not a special case, so first output
|
|
-- the name of the type, preceded by private for a private type
|
|
|
|
if Is_Private_Type (Error_Msg_Node_1) then
|
|
Set_Msg_Str ("private type ");
|
|
else
|
|
Set_Msg_Str ("type ");
|
|
end if;
|
|
|
|
Ent := Error_Msg_Node_1;
|
|
|
|
if Is_Internal_Name (Chars (Ent)) then
|
|
Unwind_Internal_Type (Ent);
|
|
end if;
|
|
|
|
-- Types in Standard are displayed as "Standard.name"
|
|
|
|
if Sloc (Ent) <= Standard_Location then
|
|
Set_Msg_Quote;
|
|
Set_Msg_Str ("Standard.");
|
|
Set_Msg_Node (Ent);
|
|
Add_Class;
|
|
Set_Msg_Quote;
|
|
|
|
-- Types in other language defined units are displayed as
|
|
-- "package-name.type-name"
|
|
|
|
elsif
|
|
Is_Predefined_File_Name (Unit_File_Name (Get_Source_Unit (Ent)))
|
|
then
|
|
Get_Unqualified_Decoded_Name_String
|
|
(Unit_Name (Get_Source_Unit (Ent)));
|
|
Name_Len := Name_Len - 2;
|
|
Set_Msg_Quote;
|
|
Set_Casing (Mixed_Case);
|
|
Set_Msg_Name_Buffer;
|
|
Set_Msg_Char ('.');
|
|
Set_Casing (Mixed_Case);
|
|
Set_Msg_Node (Ent);
|
|
Add_Class;
|
|
Set_Msg_Quote;
|
|
|
|
-- All other types display as "type name" defined at line xxx
|
|
-- possibly qualified if qualification is requested.
|
|
|
|
else
|
|
Set_Msg_Quote;
|
|
Set_Qualification (Error_Msg_Qual_Level, Ent);
|
|
Set_Msg_Node (Ent);
|
|
Add_Class;
|
|
Set_Msg_Quote;
|
|
end if;
|
|
|
|
-- If the original type did not come from a predefined
|
|
-- file, add the location where the type was defined.
|
|
|
|
if Sloc (Error_Msg_Node_1) > Standard_Location
|
|
and then
|
|
not Is_Predefined_File_Name
|
|
(Unit_File_Name (Get_Source_Unit (Error_Msg_Node_1)))
|
|
then
|
|
Set_Msg_Str (" defined");
|
|
Set_Msg_Insertion_Line_Number (Sloc (Error_Msg_Node_1), Flag);
|
|
|
|
-- If it did come from a predefined file, deal with the case where
|
|
-- this was a file with a generic instantiation from elsewhere.
|
|
|
|
else
|
|
if Sloc (Error_Msg_Node_1) > Standard_Location then
|
|
declare
|
|
Iloc : constant Source_Ptr :=
|
|
Instantiation_Location (Sloc (Error_Msg_Node_1));
|
|
|
|
begin
|
|
if Iloc /= No_Location
|
|
and then not Suppress_Instance_Location
|
|
then
|
|
Set_Msg_Str (" from instance");
|
|
Set_Msg_Insertion_Line_Number (Iloc, Flag);
|
|
end if;
|
|
end;
|
|
end if;
|
|
end if;
|
|
|
|
end Set_Msg_Insertion_Type_Reference;
|
|
|
|
----------------------------
|
|
-- Set_Msg_Insertion_Uint --
|
|
----------------------------
|
|
|
|
procedure Set_Msg_Insertion_Uint is
|
|
begin
|
|
Set_Msg_Blank;
|
|
UI_Image (Error_Msg_Uint_1);
|
|
|
|
for J in 1 .. UI_Image_Length loop
|
|
Set_Msg_Char (UI_Image_Buffer (J));
|
|
end loop;
|
|
|
|
-- The following assignment ensures that a second carret insertion
|
|
-- character will correspond to the Error_Msg_Uint_2 parameter.
|
|
|
|
Error_Msg_Uint_1 := Error_Msg_Uint_2;
|
|
end Set_Msg_Insertion_Uint;
|
|
|
|
---------------------------------
|
|
-- Set_Msg_Insertion_Unit_Name --
|
|
---------------------------------
|
|
|
|
procedure Set_Msg_Insertion_Unit_Name is
|
|
begin
|
|
if Error_Msg_Unit_1 = No_Name then
|
|
null;
|
|
|
|
elsif Error_Msg_Unit_1 = Error_Name then
|
|
Set_Msg_Blank;
|
|
Set_Msg_Str ("<error>");
|
|
|
|
else
|
|
Get_Unit_Name_String (Error_Msg_Unit_1);
|
|
Set_Msg_Blank;
|
|
Set_Msg_Quote;
|
|
Set_Msg_Name_Buffer;
|
|
Set_Msg_Quote;
|
|
end if;
|
|
|
|
-- The following assignment ensures that a second percent insertion
|
|
-- character will correspond to the Error_Msg_Unit_2 parameter.
|
|
|
|
Error_Msg_Unit_1 := Error_Msg_Unit_2;
|
|
|
|
end Set_Msg_Insertion_Unit_Name;
|
|
|
|
-----------------
|
|
-- Set_Msg_Int --
|
|
-----------------
|
|
|
|
procedure Set_Msg_Int (Line : Int) is
|
|
begin
|
|
if Line > 9 then
|
|
Set_Msg_Int (Line / 10);
|
|
end if;
|
|
|
|
Set_Msg_Char (Character'Val (Character'Pos ('0') + (Line rem 10)));
|
|
end Set_Msg_Int;
|
|
|
|
-------------------------
|
|
-- Set_Msg_Name_Buffer --
|
|
-------------------------
|
|
|
|
procedure Set_Msg_Name_Buffer is
|
|
begin
|
|
for J in 1 .. Name_Len loop
|
|
Set_Msg_Char (Name_Buffer (J));
|
|
end loop;
|
|
end Set_Msg_Name_Buffer;
|
|
|
|
------------------
|
|
-- Set_Msg_Node --
|
|
------------------
|
|
|
|
procedure Set_Msg_Node (Node : Node_Id) is
|
|
Ent : Entity_Id;
|
|
Nam : Name_Id;
|
|
|
|
begin
|
|
if Nkind (Node) = N_Designator then
|
|
Set_Msg_Node (Name (Node));
|
|
Set_Msg_Char ('.');
|
|
Set_Msg_Node (Identifier (Node));
|
|
return;
|
|
|
|
elsif Nkind (Node) = N_Defining_Program_Unit_Name then
|
|
Set_Msg_Node (Name (Node));
|
|
Set_Msg_Char ('.');
|
|
Set_Msg_Node (Defining_Identifier (Node));
|
|
return;
|
|
|
|
elsif Nkind (Node) = N_Selected_Component then
|
|
Set_Msg_Node (Prefix (Node));
|
|
Set_Msg_Char ('.');
|
|
Set_Msg_Node (Selector_Name (Node));
|
|
return;
|
|
end if;
|
|
|
|
-- The only remaining possibilities are identifiers, defining
|
|
-- identifiers, pragmas, and pragma argument associations, i.e.
|
|
-- nodes that have a Chars field.
|
|
|
|
-- Internal names generally represent something gone wrong. An exception
|
|
-- is the case of internal type names, where we try to find a reasonable
|
|
-- external representation for the external name
|
|
|
|
if Is_Internal_Name (Chars (Node))
|
|
and then
|
|
((Is_Entity_Name (Node)
|
|
and then Present (Entity (Node))
|
|
and then Is_Type (Entity (Node)))
|
|
or else
|
|
(Nkind (Node) = N_Defining_Identifier and then Is_Type (Node)))
|
|
then
|
|
if Nkind (Node) = N_Identifier then
|
|
Ent := Entity (Node);
|
|
else
|
|
Ent := Node;
|
|
end if;
|
|
|
|
Unwind_Internal_Type (Ent);
|
|
Nam := Chars (Ent);
|
|
|
|
else
|
|
Nam := Chars (Node);
|
|
end if;
|
|
|
|
-- At this stage, the name to output is in Nam
|
|
|
|
Get_Unqualified_Decoded_Name_String (Nam);
|
|
|
|
-- Remove trailing upper case letters from the name (useful for
|
|
-- dealing with some cases of internal names.
|
|
|
|
while Name_Len > 1 and then Name_Buffer (Name_Len) in 'A' .. 'Z' loop
|
|
Name_Len := Name_Len - 1;
|
|
end loop;
|
|
|
|
-- If we have any of the names from standard that start with the
|
|
-- characters "any " (e.g. Any_Type), then kill the message since
|
|
-- almost certainly it is a junk cascaded message.
|
|
|
|
if Name_Len > 4
|
|
and then Name_Buffer (1 .. 4) = "any "
|
|
then
|
|
Kill_Message := True;
|
|
end if;
|
|
|
|
-- Now we have to set the proper case. If we have a source location
|
|
-- then do a check to see if the name in the source is the same name
|
|
-- as the name in the Names table, except for possible differences
|
|
-- in case, which is the case when we can copy from the source.
|
|
|
|
declare
|
|
Src_Loc : constant Source_Ptr := Sloc (Error_Msg_Node_1);
|
|
Sbuffer : Source_Buffer_Ptr;
|
|
Ref_Ptr : Integer;
|
|
Src_Ptr : Source_Ptr;
|
|
|
|
begin
|
|
Ref_Ptr := 1;
|
|
Src_Ptr := Src_Loc;
|
|
|
|
-- Determine if the reference we are dealing with corresponds
|
|
-- to text at the point of the error reference. This will often
|
|
-- be the case for simple identifier references, and is the case
|
|
-- where we can copy the spelling from the source.
|
|
|
|
if Src_Loc /= No_Location
|
|
and then Src_Loc > Standard_Location
|
|
then
|
|
Sbuffer := Source_Text (Get_Source_File_Index (Src_Loc));
|
|
|
|
while Ref_Ptr <= Name_Len loop
|
|
exit when
|
|
Fold_Lower (Sbuffer (Src_Ptr)) /=
|
|
Fold_Lower (Name_Buffer (Ref_Ptr));
|
|
Ref_Ptr := Ref_Ptr + 1;
|
|
Src_Ptr := Src_Ptr + 1;
|
|
end loop;
|
|
end if;
|
|
|
|
-- If we get through the loop without a mismatch, then output
|
|
-- the name the way it is spelled in the source program
|
|
|
|
if Ref_Ptr > Name_Len then
|
|
Src_Ptr := Src_Loc;
|
|
|
|
for J in 1 .. Name_Len loop
|
|
Name_Buffer (J) := Sbuffer (Src_Ptr);
|
|
Src_Ptr := Src_Ptr + 1;
|
|
end loop;
|
|
|
|
-- Otherwise set the casing using the default identifier casing
|
|
|
|
else
|
|
Set_Casing (Identifier_Casing (Flag_Source), Mixed_Case);
|
|
end if;
|
|
end;
|
|
|
|
Set_Msg_Name_Buffer;
|
|
Add_Class;
|
|
|
|
-- Add 'Class if class wide type
|
|
|
|
if Class_Flag then
|
|
Set_Msg_Char (''');
|
|
Get_Name_String (Name_Class);
|
|
Set_Casing (Identifier_Casing (Flag_Source), Mixed_Case);
|
|
Set_Msg_Name_Buffer;
|
|
end if;
|
|
end Set_Msg_Node;
|
|
|
|
-------------------
|
|
-- Set_Msg_Quote --
|
|
-------------------
|
|
|
|
procedure Set_Msg_Quote is
|
|
begin
|
|
if not Manual_Quote_Mode then
|
|
Set_Msg_Char ('"');
|
|
end if;
|
|
end Set_Msg_Quote;
|
|
|
|
-----------------
|
|
-- Set_Msg_Str --
|
|
-----------------
|
|
|
|
procedure Set_Msg_Str (Text : String) is
|
|
begin
|
|
for J in Text'Range loop
|
|
Set_Msg_Char (Text (J));
|
|
end loop;
|
|
end Set_Msg_Str;
|
|
|
|
------------------
|
|
-- Set_Msg_Text --
|
|
------------------
|
|
|
|
procedure Set_Msg_Text (Text : String; Flag : Source_Ptr) is
|
|
C : Character; -- Current character
|
|
P : Natural; -- Current index;
|
|
|
|
begin
|
|
Manual_Quote_Mode := False;
|
|
Is_Unconditional_Msg := False;
|
|
Msglen := 0;
|
|
Flag_Source := Get_Source_File_Index (Flag);
|
|
P := Text'First;
|
|
|
|
while P <= Text'Last loop
|
|
C := Text (P);
|
|
P := P + 1;
|
|
|
|
-- Check for insertion character
|
|
|
|
if C = '%' then
|
|
Set_Msg_Insertion_Name;
|
|
|
|
elsif C = '$' then
|
|
Set_Msg_Insertion_Unit_Name;
|
|
|
|
elsif C = '{' then
|
|
Set_Msg_Insertion_File_Name;
|
|
|
|
elsif C = '}' then
|
|
Set_Msg_Insertion_Type_Reference (Flag);
|
|
|
|
elsif C = '*' then
|
|
Set_Msg_Insertion_Reserved_Name;
|
|
|
|
elsif C = '&' then
|
|
Set_Msg_Insertion_Node;
|
|
|
|
elsif C = '#' then
|
|
Set_Msg_Insertion_Line_Number (Error_Msg_Sloc, Flag);
|
|
|
|
elsif C = '\' then
|
|
Continuation := True;
|
|
|
|
elsif C = '@' then
|
|
Set_Msg_Insertion_Column;
|
|
|
|
elsif C = '^' then
|
|
Set_Msg_Insertion_Uint;
|
|
|
|
elsif C = '`' then
|
|
Manual_Quote_Mode := not Manual_Quote_Mode;
|
|
Set_Msg_Char ('"');
|
|
|
|
elsif C = '!' then
|
|
Is_Unconditional_Msg := True;
|
|
|
|
elsif C = '?' then
|
|
null;
|
|
|
|
elsif C = '|' then
|
|
null;
|
|
|
|
elsif C = ''' then
|
|
Set_Msg_Char (Text (P));
|
|
P := P + 1;
|
|
|
|
-- Upper case letter (start of reserved word if 2 or more)
|
|
|
|
elsif C in 'A' .. 'Z'
|
|
and then P <= Text'Last
|
|
and then Text (P) in 'A' .. 'Z'
|
|
then
|
|
P := P - 1;
|
|
Set_Msg_Insertion_Reserved_Word (Text, P);
|
|
|
|
-- Normal character with no special treatment
|
|
|
|
else
|
|
Set_Msg_Char (C);
|
|
end if;
|
|
|
|
end loop;
|
|
end Set_Msg_Text;
|
|
|
|
------------------------------
|
|
-- Set_Next_Non_Deleted_Msg --
|
|
------------------------------
|
|
|
|
procedure Set_Next_Non_Deleted_Msg (E : in out Error_Msg_Id) is
|
|
begin
|
|
if E = No_Error_Msg then
|
|
return;
|
|
|
|
else
|
|
loop
|
|
E := Errors.Table (E).Next;
|
|
exit when E = No_Error_Msg or else not Errors.Table (E).Deleted;
|
|
end loop;
|
|
end if;
|
|
end Set_Next_Non_Deleted_Msg;
|
|
|
|
----------------
|
|
-- Set_Posted --
|
|
----------------
|
|
|
|
procedure Set_Posted (N : Node_Id) is
|
|
P : Node_Id;
|
|
|
|
begin
|
|
-- We always set Error_Posted on the node itself
|
|
|
|
Set_Error_Posted (N);
|
|
|
|
-- If it is a subexpression, then set Error_Posted on parents
|
|
-- up to and including the first non-subexpression construct. This
|
|
-- helps avoid cascaded error messages within a single expression.
|
|
|
|
P := N;
|
|
loop
|
|
P := Parent (P);
|
|
exit when No (P);
|
|
Set_Error_Posted (P);
|
|
exit when Nkind (P) not in N_Subexpr;
|
|
end loop;
|
|
|
|
-- A special check, if we just posted an error on an attribute
|
|
-- definition clause, then also set the entity involved as posted.
|
|
-- For example, this stops complaining about the alignment after
|
|
-- complaining about the size, which is likely to be useless.
|
|
|
|
if Nkind (P) = N_Attribute_Definition_Clause then
|
|
if Is_Entity_Name (Name (P)) then
|
|
Set_Error_Posted (Entity (Name (P)));
|
|
end if;
|
|
end if;
|
|
end Set_Posted;
|
|
|
|
-----------------------
|
|
-- Set_Qualification --
|
|
-----------------------
|
|
|
|
procedure Set_Qualification (N : Nat; E : Entity_Id) is
|
|
begin
|
|
if N /= 0 and then Scope (E) /= Standard_Standard then
|
|
Set_Qualification (N - 1, Scope (E));
|
|
Set_Msg_Node (Scope (E));
|
|
Set_Msg_Char ('.');
|
|
end if;
|
|
end Set_Qualification;
|
|
|
|
---------------------------
|
|
-- Set_Warnings_Mode_Off --
|
|
---------------------------
|
|
|
|
procedure Set_Warnings_Mode_Off (Loc : Source_Ptr) is
|
|
begin
|
|
-- Don't bother with entries from instantiation copies, since we
|
|
-- will already have a copy in the template, which is what matters
|
|
|
|
if Instantiation (Get_Source_File_Index (Loc)) /= No_Location then
|
|
return;
|
|
end if;
|
|
|
|
-- If last entry in table already covers us, this is a redundant
|
|
-- pragma Warnings (Off) and can be ignored. This also handles the
|
|
-- case where all warnings are suppressed by command line switch.
|
|
|
|
if Warnings.Last >= Warnings.First
|
|
and then Warnings.Table (Warnings.Last).Start <= Loc
|
|
and then Loc <= Warnings.Table (Warnings.Last).Stop
|
|
then
|
|
return;
|
|
|
|
-- Otherwise establish a new entry, extending from the location of
|
|
-- the pragma to the end of the current source file. This ending
|
|
-- point will be adjusted by a subsequent pragma Warnings (On).
|
|
|
|
else
|
|
Warnings.Increment_Last;
|
|
Warnings.Table (Warnings.Last).Start := Loc;
|
|
Warnings.Table (Warnings.Last).Stop :=
|
|
Source_Last (Current_Source_File);
|
|
end if;
|
|
end Set_Warnings_Mode_Off;
|
|
|
|
--------------------------
|
|
-- Set_Warnings_Mode_On --
|
|
--------------------------
|
|
|
|
procedure Set_Warnings_Mode_On (Loc : Source_Ptr) is
|
|
begin
|
|
-- Don't bother with entries from instantiation copies, since we
|
|
-- will already have a copy in the template, which is what matters
|
|
|
|
if Instantiation (Get_Source_File_Index (Loc)) /= No_Location then
|
|
return;
|
|
end if;
|
|
|
|
-- Nothing to do unless command line switch to suppress all warnings
|
|
-- is off, and the last entry in the warnings table covers this
|
|
-- pragma Warnings (On), in which case adjust the end point.
|
|
|
|
if (Warnings.Last >= Warnings.First
|
|
and then Warnings.Table (Warnings.Last).Start <= Loc
|
|
and then Loc <= Warnings.Table (Warnings.Last).Stop)
|
|
and then Warning_Mode /= Suppress
|
|
then
|
|
Warnings.Table (Warnings.Last).Stop := Loc;
|
|
end if;
|
|
end Set_Warnings_Mode_On;
|
|
|
|
------------------------
|
|
-- Special_Msg_Delete --
|
|
------------------------
|
|
|
|
function Special_Msg_Delete
|
|
(Msg : String;
|
|
N : Node_Or_Entity_Id;
|
|
E : Node_Or_Entity_Id)
|
|
return Boolean
|
|
is
|
|
begin
|
|
-- Never delete messages in -gnatdO mode
|
|
|
|
if Debug_Flag_OO then
|
|
return False;
|
|
|
|
-- When an atomic object refers to a non-atomic type in the same
|
|
-- scope, we implicitly make the type atomic. In the non-error
|
|
-- case this is surely safe (and in fact prevents an error from
|
|
-- occurring if the type is not atomic by default). But if the
|
|
-- object cannot be made atomic, then we introduce an extra junk
|
|
-- message by this manipulation, which we get rid of here.
|
|
|
|
-- We identify this case by the fact that it references a type for
|
|
-- which Is_Atomic is set, but there is no Atomic pragma setting it.
|
|
|
|
elsif Msg = "atomic access to & cannot be guaranteed"
|
|
and then Is_Type (E)
|
|
and then Is_Atomic (E)
|
|
and then No (Get_Rep_Pragma (E, Name_Atomic))
|
|
then
|
|
return True;
|
|
|
|
-- When a size is wrong for a frozen type there is no explicit
|
|
-- size clause, and other errors have occurred, suppress the
|
|
-- message, since it is likely that this size error is a cascaded
|
|
-- result of other errors. The reason we eliminate unfrozen types
|
|
-- is that messages issued before the freeze type are for sure OK.
|
|
|
|
elsif Msg = "size for& too small, minimum allowed is ^"
|
|
and then Is_Frozen (E)
|
|
and then Serious_Errors_Detected > 0
|
|
and then Nkind (N) /= N_Component_Clause
|
|
and then Nkind (Parent (N)) /= N_Component_Clause
|
|
and then
|
|
No (Get_Attribute_Definition_Clause (E, Attribute_Size))
|
|
and then
|
|
No (Get_Attribute_Definition_Clause (E, Attribute_Object_Size))
|
|
and then
|
|
No (Get_Attribute_Definition_Clause (E, Attribute_Value_Size))
|
|
then
|
|
return True;
|
|
|
|
-- All special tests complete, so go ahead with message
|
|
|
|
else
|
|
return False;
|
|
end if;
|
|
end Special_Msg_Delete;
|
|
|
|
------------------------------
|
|
-- Test_Warning_Serious_Msg --
|
|
------------------------------
|
|
|
|
procedure Test_Warning_Msg (Msg : String) is
|
|
begin
|
|
Is_Serious_Error := True;
|
|
|
|
if Msg'Length > 7 and then Msg (1 .. 7) = "(style)" then
|
|
Is_Warning_Msg := True;
|
|
else
|
|
Is_Warning_Msg := False;
|
|
end if;
|
|
|
|
for J in Msg'Range loop
|
|
if Msg (J) = '?'
|
|
and then (J = Msg'First or else Msg (J - 1) /= ''')
|
|
then
|
|
Is_Warning_Msg := True;
|
|
|
|
elsif Msg (J) = '|'
|
|
and then (J = Msg'First or else Msg (J - 1) /= ''')
|
|
then
|
|
Is_Serious_Error := False;
|
|
end if;
|
|
end loop;
|
|
|
|
if Is_Warning_Msg then
|
|
Is_Serious_Error := False;
|
|
end if;
|
|
end Test_Warning_Msg;
|
|
|
|
--------------------------
|
|
-- Unwind_Internal_Type --
|
|
--------------------------
|
|
|
|
procedure Unwind_Internal_Type (Ent : in out Entity_Id) is
|
|
Derived : Boolean := False;
|
|
Mchar : Character;
|
|
Old_Ent : Entity_Id;
|
|
|
|
begin
|
|
-- Undo placement of a quote, since we will put it back later
|
|
|
|
Mchar := Msg_Buffer (Msglen);
|
|
|
|
if Mchar = '"' then
|
|
Msglen := Msglen - 1;
|
|
end if;
|
|
|
|
-- The loop here deals with recursive types, we are trying to
|
|
-- find a related entity that is not an implicit type. Note
|
|
-- that the check with Old_Ent stops us from getting "stuck".
|
|
-- Also, we don't output the "type derived from" message more
|
|
-- than once in the case where we climb up multiple levels.
|
|
|
|
loop
|
|
Old_Ent := Ent;
|
|
|
|
-- Implicit access type, use directly designated type
|
|
|
|
if Is_Access_Type (Ent) then
|
|
Set_Msg_Str ("access to ");
|
|
Ent := Directly_Designated_Type (Ent);
|
|
|
|
-- Classwide type
|
|
|
|
elsif Is_Class_Wide_Type (Ent) then
|
|
Class_Flag := True;
|
|
Ent := Root_Type (Ent);
|
|
|
|
-- Use base type if this is a subtype
|
|
|
|
elsif Ent /= Base_Type (Ent) then
|
|
Buffer_Remove ("type ");
|
|
|
|
-- Avoid duplication "subtype of subtype of", and also replace
|
|
-- "derived from subtype of" simply by "derived from"
|
|
|
|
if not Buffer_Ends_With ("subtype of ")
|
|
and then not Buffer_Ends_With ("derived from ")
|
|
then
|
|
Set_Msg_Str ("subtype of ");
|
|
end if;
|
|
|
|
Ent := Base_Type (Ent);
|
|
|
|
-- If this is a base type with a first named subtype, use the
|
|
-- first named subtype instead. This is not quite accurate in
|
|
-- all cases, but it makes too much noise to be accurate and
|
|
-- add 'Base in all cases. Note that we only do this is the
|
|
-- first named subtype is not itself an internal name. This
|
|
-- avoids the obvious loop (subtype->basetype->subtype) which
|
|
-- would otherwise occur!)
|
|
|
|
elsif Present (Freeze_Node (Ent))
|
|
and then Present (First_Subtype_Link (Freeze_Node (Ent)))
|
|
and then
|
|
not Is_Internal_Name
|
|
(Chars (First_Subtype_Link (Freeze_Node (Ent))))
|
|
then
|
|
Ent := First_Subtype_Link (Freeze_Node (Ent));
|
|
|
|
-- Otherwise use root type
|
|
|
|
else
|
|
if not Derived then
|
|
Buffer_Remove ("type ");
|
|
|
|
-- Test for "subtype of type derived from" which seems
|
|
-- excessive and is replaced by simply "type derived from"
|
|
|
|
Buffer_Remove ("subtype of");
|
|
|
|
-- Avoid duplication "type derived from type derived from"
|
|
|
|
if not Buffer_Ends_With ("type derived from ") then
|
|
Set_Msg_Str ("type derived from ");
|
|
end if;
|
|
|
|
Derived := True;
|
|
end if;
|
|
|
|
Ent := Etype (Ent);
|
|
end if;
|
|
|
|
-- If we are stuck in a loop, get out and settle for the internal
|
|
-- name after all. In this case we set to kill the message if it
|
|
-- is not the first error message (we really try hard not to show
|
|
-- the dirty laundry of the implementation to the poor user!)
|
|
|
|
if Ent = Old_Ent then
|
|
Kill_Message := True;
|
|
exit;
|
|
end if;
|
|
|
|
-- Get out if we finally found a non-internal name to use
|
|
|
|
exit when not Is_Internal_Name (Chars (Ent));
|
|
end loop;
|
|
|
|
if Mchar = '"' then
|
|
Set_Msg_Char ('"');
|
|
end if;
|
|
|
|
end Unwind_Internal_Type;
|
|
|
|
-------------------------
|
|
-- Warnings_Suppressed --
|
|
-------------------------
|
|
|
|
function Warnings_Suppressed (Loc : Source_Ptr) return Boolean is
|
|
begin
|
|
for J in Warnings.First .. Warnings.Last loop
|
|
if Warnings.Table (J).Start <= Loc
|
|
and then Loc <= Warnings.Table (J).Stop
|
|
then
|
|
return True;
|
|
end if;
|
|
end loop;
|
|
|
|
return False;
|
|
end Warnings_Suppressed;
|
|
|
|
end Errout;
|