1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- S I N F O . C N -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2011, 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-- This child package of Sinfo contains some routines that permit in place 27-- alteration of existing tree nodes by changing the value in the Nkind 28-- field. Since Nkind functions logically in a manner similar to a variant 29-- record discriminant part, such alterations cannot be permitted in a 30-- general manner, but in some specific cases, the fields of related nodes 31-- have been deliberately laid out in a manner that permits such alteration. 32 33package Sinfo.CN is 34 35 procedure Change_Identifier_To_Defining_Identifier (N : in out Node_Id); 36 -- N must refer to a node of type N_Identifier. This node is modified to 37 -- be of type N_Defining_Identifier. The scanner always returns identifiers 38 -- as N_Identifier. The parser then uses this routine to change the node 39 -- to be a defining identifier where the context demands it. This routine 40 -- also allocates the necessary extension node. Note that this procedure 41 -- may (but is not required to) change the Id of the node in question. 42 43 procedure Change_Character_Literal_To_Defining_Character_Literal 44 (N : in out Node_Id); 45 -- Similar processing for a character literal 46 47 procedure Change_Operator_Symbol_To_Defining_Operator_Symbol 48 (N : in out Node_Id); 49 -- Similar processing for an operator symbol 50 51 procedure Change_Conversion_To_Unchecked (N : Node_Id); 52 -- Change checked conversion node to unchecked conversion node, clearing 53 -- irrelevant check flags (other fields in the two nodes are identical) 54 55 procedure Change_Operator_Symbol_To_String_Literal (N : Node_Id); 56 -- The scanner returns any string that looks like an operator symbol as 57 -- a N_Operator_Symbol node. The parser then uses this procedure to change 58 -- the node to a normal N_String_Literal node if the context is not one 59 -- in which an operator symbol is required. There are some cases where the 60 -- parser cannot tell, in which case this transformation happens later on. 61 62 procedure Change_Selected_Component_To_Expanded_Name (N : Node_Id); 63 -- The parser always generates Selected_Component nodes. The semantics 64 -- modifies these to Expanded_Name nodes where appropriate. Note that 65 -- on return the Chars field is set to a copy of the contents of the 66 -- Chars field of the Selector_Name field. 67 68 procedure Change_Name_To_Procedure_Call_Statement (N : Node_Id); 69 -- Some statements (procedure call statements) are in the form of a name 70 -- and are parsed as such. This routine takes the scanned name as input 71 -- and returns the corresponding N_Procedure_Call_Statement. 72 73end Sinfo.CN; 74