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Diffstat (limited to 'gcc-4.4.0/gcc/ada/sem_prag.ads')
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diff --git a/gcc-4.4.0/gcc/ada/sem_prag.ads b/gcc-4.4.0/gcc/ada/sem_prag.ads new file mode 100644 index 000000000..b5e843a62 --- /dev/null +++ b/gcc-4.4.0/gcc/ada/sem_prag.ads @@ -0,0 +1,115 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- S E M _ P R A G -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1992-2008, 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 3, 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 COPYING3. If not, go to -- +-- http://www.gnu.org/licenses for a complete copy of the license. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- Pragma handling is isolated in a separate package +-- (logically this processing belongs in chapter 4) + +with Namet; use Namet; +with Types; use Types; + +package Sem_Prag is + + ----------------- + -- Subprograms -- + ----------------- + + procedure Analyze_PPC_In_Decl_Part (N : Node_Id; S : Entity_Id); + -- Special analyze routine for precondition/postcondition pragma that + -- appears within a declarative part where the pragma is associated + -- with a subprogram specification. N is the pragma node, and S is the + -- entity for the related subprogram. This procedure does a preanalysis + -- of the expressions in the pragma as "spec expressions" (see section + -- in Sem "Handling of Default and Per-Object Expressions..."). + + procedure Analyze_Pragma (N : Node_Id); + -- Analyze procedure for pragma reference node N + + function Check_Enabled (Nam : Name_Id) return Boolean; + -- This function is used in connection with pragmas Assertion, Check, + -- Precondition, and Postcondition to determine if Check pragmas (or + -- corresponding Assert, Precondition, or Postcondition pragmas) are + -- currently active, as determined by the presence of -gnata on the + -- command line (which sets the default), and the appearance of pragmas + -- Check_Policy and Assertion_Policy as configuration pragmas either in + -- a configuration pragma file, or at the start of the current unit. + -- True is returned if the specified check is enabled. + + function Delay_Config_Pragma_Analyze (N : Node_Id) return Boolean; + -- N is a pragma appearing in a configuration pragma file. Most such + -- pragmas are analyzed when the file is read, before parsing and analyzing + -- the main unit. However, the analysis of certain pragmas results in + -- adding information to the compiled main unit, and this cannot be done + -- till the main unit is processed. Such pragmas return True from this + -- function and in Frontend pragmas where Delay_Config_Pragma_Analyze is + -- True have their analysis delayed until after the main program is parsed + -- and analyzed. + + procedure Initialize; + -- Initializes data structures used for pragma processing. Must be called + -- before analyzing each new main source program. + + function Is_Non_Significant_Pragma_Reference (N : Node_Id) return Boolean; + -- The node N is a node for an entity and the issue is whether the + -- occurrence is a reference for the purposes of giving warnings about + -- unreferenced variables. This function returns True if the reference is + -- not a reference from this point of view (e.g. the occurrence in a pragma + -- Pack) and False if it is a real reference (e.g. the occurrence in a + -- pragma Export); + + function Is_Pragma_String_Literal (Par : Node_Id) return Boolean; + -- Given an N_Pragma_Argument_Association node, Par, which has the form of + -- an operator symbol, determines whether or not it should be treated as an + -- string literal. This is called by Sem_Ch6.Analyze_Operator_Symbol. If + -- True is returned, the argument is converted to a string literal. If + -- False is returned, then the argument is treated as an entity reference + -- to the operator. + + function Is_Config_Static_String (Arg : Node_Id) return Boolean; + -- This is called for a configuration pragma that requires either string + -- literal or a concatenation of string literals. We cannot use normal + -- static string processing because it is too early in the case of the + -- pragma appearing in a configuration pragmas file. If Arg is of an + -- appropriate form, then this call obtains the string (doing any necessary + -- concatenations) and places it in Name_Buffer, setting Name_Len to its + -- length, and then returns True. If it is not of the correct form, then an + -- appropriate error message is posted, and False is returned. + + procedure Process_Compilation_Unit_Pragmas (N : Node_Id); + -- Called at the start of processing compilation unit N to deal with any + -- special issues regarding pragmas. In particular, we have to deal with + -- Suppress_All at this stage, since it appears after the unit instead of + -- before. + + procedure Set_Encoded_Interface_Name (E : Entity_Id; S : Node_Id); + -- This routine is used to set an encoded interface name. The node S is an + -- N_String_Literal node for the external name to be set, and E is an + -- entity whose Interface_Name field is to be set. In the normal case where + -- S contains a name that is a valid C identifier, then S is simply set as + -- the value of the Interface_Name. Otherwise it is encoded. See the body + -- for details of the encoding. This encoding is only done on VMS systems, + -- since it seems pretty silly, but is needed to pass some dubious tests in + -- the test suite. + +end Sem_Prag; |