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|---|---|---|
| 70482933 RK |
1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT COMPILER COMPONENTS -- | |
| 4 | -- -- | |
| 5 | -- E X P _ C H 1 1 -- | |
| 6 | -- -- | |
| 7 | -- S p e c -- | |
| 8 | -- -- | |
| 4b490c1e | 9 | -- Copyright (C) 1992-2020, Free Software Foundation, Inc. -- |
| 70482933 RK |
10 | -- -- |
| 11 | -- GNAT is free software; you can redistribute it and/or modify it under -- | |
| 12 | -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 748086b7 | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| 70482933 RK |
14 | -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| 15 | -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
| 5dabb19c AC |
16 | -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| 17 | -- for more details. You should have received a copy of the GNU General -- | |
| 18 | -- Public License distributed with GNAT; see file COPYING3. If not, go to -- | |
| 19 | -- http://www.gnu.org/licenses for a complete copy of the license. -- | |
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20 | -- -- |
| 21 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 71ff80dc | 22 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
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23 | -- -- |
| 24 | ------------------------------------------------------------------------------ | |
| 25 | ||
| 26 | -- Expand routines for chapter 11 constructs | |
| 27 | ||
| 28 | with Types; use Types; | |
| 29 | ||
| 30 | package Exp_Ch11 is | |
| 31 | procedure Expand_N_Exception_Declaration (N : Node_Id); | |
| 32 | procedure Expand_N_Handled_Sequence_Of_Statements (N : Node_Id); | |
| 33 | procedure Expand_N_Raise_Constraint_Error (N : Node_Id); | |
| c8d63650 | 34 | procedure Expand_N_Raise_Expression (N : Node_Id); |
| 70482933 RK |
35 | procedure Expand_N_Raise_Program_Error (N : Node_Id); |
| 36 | procedure Expand_N_Raise_Statement (N : Node_Id); | |
| 37 | procedure Expand_N_Raise_Storage_Error (N : Node_Id); | |
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38 | |
| 39 | -- Data structures for gathering information to build exception tables | |
| 40 | -- See runtime routine Ada.Exceptions for full details on the format and | |
| 41 | -- content of these tables. | |
| 42 | ||
| 6e840989 HK |
43 | procedure Expand_At_End_Handler (HSS : Node_Id; Blk_Id : Entity_Id); |
| 44 | -- Given handled statement sequence HSS for which the At_End_Proc field | |
| 45 | -- is set, and which currently has no exception handlers, this procedure | |
| 46 | -- expands the special exception handler required. This procedure also | |
| 47 | -- create a new scope for the given block, if Blk_Id is not Empty. | |
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48 | |
| 49 | procedure Expand_Exception_Handlers (HSS : Node_Id); | |
| 50 | -- This procedure expands exception handlers, and is called as part | |
| 51 | -- of the processing for Expand_N_Handled_Sequence_Of_Statements and | |
| 52 | -- is also called from Expand_At_End_Handler. N is the handled sequence | |
| 53 | -- of statements that has the exception handler(s) to be expanded. This | |
| 54 | -- is also called to expand the special exception handler built for | |
| 55 | -- accept bodies (see Exp_Ch9.Build_Accept_Body). | |
| 56 | ||
| 6c5290ce TQ |
57 | function Find_Local_Handler |
| 58 | (Ename : Entity_Id; | |
| 59 | Nod : Node_Id) return Node_Id; | |
| 60 | -- This function searches for a local exception handler that will handle | |
| 61 | -- the exception named by Ename. If such a local hander exists, then the | |
| 62 | -- corresponding N_Exception_Handler is returned. If no such handler is | |
| 63 | -- found then Empty is returned. In order to match and return True, the | |
| 64 | -- handler may not have a choice parameter specification. Nod is the raise | |
| 65 | -- node that references the handler. | |
| 66 | ||
| baa3441d RD |
67 | function Get_Local_Raise_Call_Entity return Entity_Id; |
| 68 | -- This function is provided for use by the back end in conjunction with | |
| 69 | -- generation of Local_Raise calls when an exception raise is converted to | |
| 70 | -- a goto statement. If Local_Raise is defined, its entity is returned, | |
| 71 | -- if not, Empty is returned (in which case the call is silently skipped). | |
| 72 | ||
| c7732bbe EB |
73 | -- WARNING: There is a matching C declaration of this subprogram in fe.h |
| 74 | ||
| baa3441d RD |
75 | function Get_RT_Exception_Entity (R : RT_Exception_Code) return Entity_Id; |
| 76 | -- This function is provided for use by the back end in conjunction with | |
| 77 | -- generation of Local_Raise calls when an exception raise is converted to | |
| 78 | -- a goto statement. The argument is the reason code which would be used | |
| 79 | -- to determine which Rcheck_nn procedure to call. The returned result is | |
| 80 | -- the exception entity to be passed to Local_Raise. | |
| 81 | ||
| c7732bbe EB |
82 | -- WARNING: There is a matching C declaration of this subprogram in fe.h |
| 83 | ||
| 0c644c99 | 84 | procedure Get_RT_Exception_Name (Code : RT_Exception_Code); |
| 799d0e05 AC |
85 | -- This procedure is provided for use by the back end to obtain the name of |
| 86 | -- the Rcheck procedure for Code. The name is appended to Namet.Name_Buffer | |
| 87 | -- without the __gnat_rcheck_ prefix. | |
| 0c644c99 | 88 | |
| c7732bbe EB |
89 | -- WARNING: There is a matching C declaration of this subprogram in fe.h |
| 90 | ||
| 6c5290ce TQ |
91 | procedure Possible_Local_Raise (N : Node_Id; E : Entity_Id); |
| 92 | -- This procedure is called whenever node N might cause the back end | |
| 93 | -- to generate a local raise for a local Constraint/Program/Storage_Error | |
| 94 | -- exception. It deals with generating a warning if there is no local | |
| 95 | -- handler (and restriction No_Exception_Propagation is set), or if there | |
| 96 | -- is a local handler marking that it has a local raise. E is the entity | |
| 97 | -- of the corresponding exception. | |
| 489c6e19 | 98 | |
| 8f8f531f PMR |
99 | procedure Warn_If_No_Local_Raise (N : Node_Id); |
| 100 | -- Called for an exception handler that is not the target of a local raise. | |
| 101 | -- Issues warning if No_Exception_Propagation restriction is set. N is the | |
| 102 | -- node for the handler. | |
| 103 | ||
| c7732bbe EB |
104 | -- WARNING: There is a matching C declaration of this subprogram in fe.h |
| 105 | ||
| 70482933 | 106 | end Exp_Ch11; |