projects / thirdparty / gcc.git / blame
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|---|---|---|
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1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT COMPILER COMPONENTS -- | |
| 4 | -- -- | |
| 5 | -- S I N F O . C N -- | |
| 6 | -- -- | |
| 7 | -- S p e c -- | |
| 8 | -- -- | |
| 4b490c1e | 9 | -- Copyright (C) 1992-2020, Free Software Foundation, Inc. -- |
| 996ae0b0 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- -- | |
| b5c84c3c | 13 | -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| 996ae0b0 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 -- | |
| 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 -- | |
| b5c84c3c RD |
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. -- | |
| 996ae0b0 RK |
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. -- |
| 996ae0b0 RK |
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 | ||
| 33 | package 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 | ||
| 7ab4d95a AC |
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 | ||
| 996ae0b0 | 73 | end Sinfo.CN; |