1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- E X P _ C H 1 1 -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2013, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- 17-- for more details. You should have received a copy of the GNU General -- 18-- Public License distributed with GNAT; see file COPYING3. If not, go to -- 19-- http://www.gnu.org/licenses for a complete copy of the license. -- 20-- -- 21-- GNAT was originally developed by the GNAT team at New York University. -- 22-- Extensive contributions were provided by Ada Core Technologies Inc. -- 23-- -- 24------------------------------------------------------------------------------ 25 26-- Expand routines for chapter 11 constructs 27 28with Types; use Types; 29 30package 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); 34 procedure Expand_N_Raise_Expression (N : Node_Id); 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); 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 43 procedure Expand_At_End_Handler (HSS : Node_Id; Block : Node_Id); 44 -- Given a handled statement sequence, HSS, for which the At_End_Proc 45 -- field is set, and which currently has no exception handlers, this 46 -- procedure expands the special exception handler required. 47 -- This procedure also create a new scope for the given Block, if 48 -- Block is not Empty. 49 50 procedure Expand_Exception_Handlers (HSS : Node_Id); 51 -- This procedure expands exception handlers, and is called as part 52 -- of the processing for Expand_N_Handled_Sequence_Of_Statements and 53 -- is also called from Expand_At_End_Handler. N is the handled sequence 54 -- of statements that has the exception handler(s) to be expanded. This 55 -- is also called to expand the special exception handler built for 56 -- accept bodies (see Exp_Ch9.Build_Accept_Body). 57 58 function Find_Local_Handler 59 (Ename : Entity_Id; 60 Nod : Node_Id) return Node_Id; 61 -- This function searches for a local exception handler that will handle 62 -- the exception named by Ename. If such a local hander exists, then the 63 -- corresponding N_Exception_Handler is returned. If no such handler is 64 -- found then Empty is returned. In order to match and return True, the 65 -- handler may not have a choice parameter specification. Nod is the raise 66 -- node that references the handler. 67 68 function Get_Local_Raise_Call_Entity return Entity_Id; 69 -- This function is provided for use by the back end in conjunction with 70 -- generation of Local_Raise calls when an exception raise is converted to 71 -- a goto statement. If Local_Raise is defined, its entity is returned, 72 -- if not, Empty is returned (in which case the call is silently skipped). 73 74 function Get_RT_Exception_Entity (R : RT_Exception_Code) return Entity_Id; 75 -- This function is provided for use by the back end in conjunction with 76 -- generation of Local_Raise calls when an exception raise is converted to 77 -- a goto statement. The argument is the reason code which would be used 78 -- to determine which Rcheck_nn procedure to call. The returned result is 79 -- the exception entity to be passed to Local_Raise. 80 81 procedure Get_RT_Exception_Name (Code : RT_Exception_Code); 82 -- This procedure is provided for use by the back end to obtain the name of 83 -- the Rcheck procedure for Code. The name is appended to Namet.Name_Buffer 84 -- without the __gnat_rcheck_ prefix. 85 86 function Is_Non_Ada_Error (E : Entity_Id) return Boolean; 87 -- This function is provided for Gigi use. It returns True if operating on 88 -- VMS, and the argument E is the entity for System.Aux_Dec.Non_Ada_Error. 89 -- This is used to generate the special matching code for this exception. 90 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. 98 99end Exp_Ch11; 100