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Diffstat (limited to 'gcc-4.2.1/gcc/ada/sem_disp.ads')
| -rw-r--r-- | gcc-4.2.1/gcc/ada/sem_disp.ads | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/gcc-4.2.1/gcc/ada/sem_disp.ads b/gcc-4.2.1/gcc/ada/sem_disp.ads deleted file mode 100644 index 1e9e18e31..000000000 --- a/gcc-4.2.1/gcc/ada/sem_disp.ads +++ /dev/null @@ -1,97 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- S E M _ D I S P -- --- -- --- S p e c -- --- -- --- Copyright (C) 1992-2005, 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 2, 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 COPYING. If not, write -- --- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- --- Boston, MA 02110-1301, USA. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - --- This package contains routines involved in tagged types and dynamic --- dispatching. - -with Types; use Types; -package Sem_Disp is - - procedure Check_Controlling_Formals (Typ : Entity_Id; Subp : Entity_Id); - -- Check that all controlling parameters of Subp are of type Typ, - -- that defaults for controlling parameters are tag-indeterminate, - -- and that the nominal subtype of the parameters and result - -- statically match the first subtype of the controlling type. - - procedure Check_Dispatching_Call (N : Node_Id); - -- Check if a call is a dispatching call. The subprogram is known to - -- be a dispatching operation. The call is dispatching if all the - -- controlling actuals are dynamically tagged. This procedure is called - -- after overload resolution, so the call is known to be unambiguous. - - procedure Check_Dispatching_Operation (Subp, Old_Subp : Entity_Id); - -- Add "Subp" to the list of primitive operations of the corresponding type - -- if it has a parameter of this type and is defined at a proper place for - -- primitive operations (new primitives are only defined in package spec, - -- overridden operation can be defined in any scope). If Old_Subp is not - -- Empty we are in the overriding case. - - procedure Check_Operation_From_Incomplete_Type - (Subp : Entity_Id; - Typ : Entity_Id); - -- If a primitive operation was defined for the incomplete view of the - -- type, and the full type declaration is a derived type definition, - -- the operation may override an inherited one. - - procedure Check_Operation_From_Private_View (Subp, Old_Subp : Entity_Id); - -- Add "Old_Subp" to the list of primitive operations of the corresponding - -- tagged type if it is the full view of a private tagged type. The Alias - -- of "OldSubp" is adjusted to point to the inherited procedure of the - -- full view because it is always this one which has to be called. - - function Find_Controlling_Arg (N : Node_Id) return Node_Id; - -- Returns the actual controlling argument if N is dynamically tagged, - -- and Empty if it is not dynamically tagged. - - function Find_Dispatching_Type (Subp : Entity_Id) return Entity_Id; - -- Check whether a subprogram is dispatching, and find the tagged - -- type of the controlling argument or arguments. - - function Is_Dynamically_Tagged (N : Node_Id) return Boolean; - -- Used to determine whether a call is dispatching, i.e. if is an - -- an expression of a class_Wide type, or a call to a function with - -- controlling result where at least one operand is dynamically tagged. - - function Is_Tag_Indeterminate (N : Node_Id) return Boolean; - -- An expression is tag-indeterminate if it is a call that dispatches - -- on result, and all controlling operands are also indeterminate. - -- Such a function call may inherit a tag from an enclosing call. - - procedure Override_Dispatching_Operation - (Tagged_Type : Entity_Id; - Prev_Op : Entity_Id; - New_Op : Entity_Id); - -- Replace an implicit dispatching operation with an explicit one. - -- Prev_Op is an inherited primitive operation which is overridden - -- by the explicit declaration of New_Op. - - procedure Propagate_Tag (Control : Node_Id; Actual : Node_Id); - -- If a function call is tag-indeterminate, its controlling argument is - -- found in the context; either an enclosing call, or the left-hand side - -- of the enclosing assignment statement. The tag must be propagated - -- recursively to the tag-indeterminate actuals of the call. - -end Sem_Disp; |