| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- D E B U G _ A -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2022, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING3. If not, go to -- |
| -- http://www.gnu.org/licenses for a complete copy of the license. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package contains data and subprograms to support the A debug switch |
| -- that is used to generate output showing what node is being analyzed, |
| -- resolved, evaluated, or expanded. |
| |
| with Types; use Types; |
| |
| package Debug_A is |
| |
| -- Note: the following subprograms are used in a stack like manner, with |
| -- an exit call matching each entry call. This means that they can keep |
| -- track of the current node being worked on, with the entry call setting |
| -- a new value, by pushing the Node_Id value on a stack, and the exit call |
| -- popping this value off. Atree.Current_Error_Node is set by both the |
| -- entry and exit routines to point to the current node so that an abort |
| -- message indicates the node involved as accurately as possible. |
| |
| procedure Debug_A_Entry (S : String; N : Node_Id); |
| pragma Inline (Debug_A_Entry); |
| -- Generates a message prefixed by a sequence of bars showing the nesting |
| -- depth (depth increases by 1 for a Debug_A_Entry call and is decreased |
| -- by the corresponding Debug_A_Exit call). Then the string is output |
| -- (analyzing, expanding etc), followed by the node number and its kind. |
| -- This output is generated only if the debug A flag is set. If the debug |
| -- A flag is not set, then no output is generated. This call also sets the |
| -- Node_Id value in Atree.Current_Error_Node in case a bomb occurs. This |
| -- is done unconditionally, whether or not the debug A flag is set. |
| |
| procedure Debug_A_Exit (S : String; N : Node_Id; Comment : String); |
| pragma Inline (Debug_A_Exit); |
| -- Generates the corresponding termination message. The message is preceded |
| -- by a sequence of bars, followed by the string S, the node number, and |
| -- a trailing comment (e.g. " (already evaluated)"). This output is |
| -- generated only if the debug A flag is set. If the debug A flag is not |
| -- set, then no output is generated. This call also resets the value in |
| -- Atree.Current_Error_Node to what it was before the corresponding call |
| -- to Debug_A_Entry. |
| |
| end Debug_A; |
