-- --
-- B o d y --
-- --
--- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2012, 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- --
-- that is the only case in which a non-present argument can be referenced.
procedure Check_Arg_Count (Required : Int);
- -- Check argument count for pragma = Required.
- -- If not give error and raise Error_Resync.
+ -- Check argument count for pragma = Required. If not give error and raise
+ -- Error_Resync.
procedure Check_Arg_Is_String_Literal (Arg : Node_Id);
-- Check the expression of the specified argument to make sure that it
procedure Process_Restrictions_Or_Restriction_Warnings;
-- Common processing for Restrictions and Restriction_Warnings pragmas.
- -- This routine only processes the case of No_Obsolescent_Features,
- -- which is the only restriction that has syntactic effects. No general
- -- error checking is done, since this will be done in Sem_Prag. The
- -- other case processed is pragma Restrictions No_Dependence, since
- -- otherwise this is done too late.
+ -- For the most part, restrictions need not be processed at parse time,
+ -- since they only affect semantic processing. This routine handles the
+ -- exceptions as follows
+ --
+ -- No_Obsolescent_Features must be processed at parse time, since there
+ -- are some obsolescent features (e.g. character replacements) which are
+ -- handled at parse time.
+ --
+ -- SPARK must be processed at parse time, since this restriction controls
+ -- whether the scanner recognizes a spark HIDE directive formatted as an
+ -- Ada comment (and generates a Tok_SPARK_Hide token for the directive).
+ --
+ -- No_Dependence must be processed at parse time, since otherwise it gets
+ -- handled too late.
+ --
+ -- Note that we don't need to do full error checking for badly formed cases
+ -- of restrictions, since these will be caught during semantic analysis.
----------
-- Arg1 --
if Id = No_Name
and then Nkind (Expr) = N_Identifier
- and then Get_Restriction_Id (Chars (Expr)) = No_Obsolescent_Features
then
- Set_Restriction (No_Obsolescent_Features, Pragma_Node);
- Restriction_Warnings (No_Obsolescent_Features) :=
- Prag_Id = Pragma_Restriction_Warnings;
+ case Get_Restriction_Id (Chars (Expr)) is
+ when No_Obsolescent_Features =>
+ Set_Restriction (No_Obsolescent_Features, Pragma_Node);
+ Restriction_Warnings (No_Obsolescent_Features) :=
+ Prag_Id = Pragma_Restriction_Warnings;
+
+ when SPARK =>
+ Set_Restriction (SPARK, Pragma_Node);
+ Restriction_Warnings (SPARK) :=
+ Prag_Id = Pragma_Restriction_Warnings;
+
+ when others =>
+ null;
+ end case;
elsif Id = Name_No_Dependence then
Set_Restriction_No_Dependence
-- Debug --
-----------
- -- pragma Debug (PROCEDURE_CALL_STATEMENT);
+ -- pragma Debug ([boolean_EXPRESSION,] PROCEDURE_CALL_STATEMENT);
- -- This has to be processed by the parser because of the very peculiar
- -- form of the second parameter, which is syntactically from a formal
- -- point of view a function call (since it must be an expression), but
- -- semantically we treat it as a procedure call (which has exactly the
- -- same syntactic form, so that's why we can get away with this!)
-
- when Pragma_Debug => Debug : declare
- Expr : Node_Id;
+ when Pragma_Debug =>
+ Check_No_Identifier (Arg1);
- begin
if Arg_Count = 2 then
- Check_No_Identifier (Arg1);
Check_No_Identifier (Arg2);
- Expr := New_Copy (Expression (Arg2));
-
else
Check_Arg_Count (1);
- Check_No_Identifier (Arg1);
- Expr := New_Copy (Expression (Arg1));
- end if;
-
- if Nkind (Expr) /= N_Indexed_Component
- and then Nkind (Expr) /= N_Function_Call
- and then Nkind (Expr) /= N_Identifier
- and then Nkind (Expr) /= N_Selected_Component
- then
- Error_Msg
- ("argument of pragma% is not procedure call", Sloc (Expr));
- raise Error_Resync;
- else
- Set_Debug_Statement
- (Pragma_Node, P_Statement_Name (Expr));
end if;
- end Debug;
-------------------------------
-- Extensions_Allowed (GNAT) --
List_Pragmas.Increment_Last;
List_Pragmas.Table (List_Pragmas.Last) := (Page, Semi);
- ------------------
- -- Restrictions --
- ------------------
+ ------------------
+ -- Restrictions --
+ ------------------
- -- pragma Restrictions (RESTRICTION {, RESTRICTION});
+ -- pragma Restrictions (RESTRICTION {, RESTRICTION});
- -- RESTRICTION ::=
- -- restriction_IDENTIFIER
- -- | restriction_parameter_IDENTIFIER => EXPRESSION
+ -- RESTRICTION ::=
+ -- restriction_IDENTIFIER
+ -- | restriction_parameter_IDENTIFIER => EXPRESSION
- -- We process the case of No_Obsolescent_Features, since this has
- -- a syntactic effect that we need to detect at parse time (the use
- -- of replacement characters such as colon for pound sign).
+ -- We process the case of No_Obsolescent_Features, since this has
+ -- a syntactic effect that we need to detect at parse time (the use
+ -- of replacement characters such as colon for pound sign).
- when Pragma_Restrictions =>
- Process_Restrictions_Or_Restriction_Warnings;
+ when Pragma_Restrictions =>
+ Process_Restrictions_Or_Restriction_Warnings;
- --------------------------
- -- Restriction_Warnings --
- --------------------------
+ --------------------------
+ -- Restriction_Warnings --
+ --------------------------
- -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
+ -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
- -- RESTRICTION ::=
- -- restriction_IDENTIFIER
- -- | restriction_parameter_IDENTIFIER => EXPRESSION
+ -- RESTRICTION ::=
+ -- restriction_IDENTIFIER
+ -- | restriction_parameter_IDENTIFIER => EXPRESSION
- -- See above comment for pragma Restrictions
+ -- See above comment for pragma Restrictions
- when Pragma_Restriction_Warnings =>
- Process_Restrictions_Or_Restriction_Warnings;
+ when Pragma_Restriction_Warnings =>
+ Process_Restrictions_Or_Restriction_Warnings;
----------------------------------------------------------
-- Source_File_Name and Source_File_Name_Project (GNAT) --
-- For all other pragmas, checking and processing is handled
-- entirely in Sem_Prag, and no further checking is done by Par.
- when Pragma_Abort_Defer |
- Pragma_Assertion_Policy |
- Pragma_Assume_No_Invalid_Values |
- Pragma_AST_Entry |
- Pragma_All_Calls_Remote |
- Pragma_Annotate |
- Pragma_Assert |
- Pragma_Asynchronous |
- Pragma_Atomic |
- Pragma_Atomic_Components |
- Pragma_Attach_Handler |
- Pragma_Check |
- Pragma_Check_Name |
- Pragma_Check_Policy |
- Pragma_CIL_Constructor |
- Pragma_Compile_Time_Error |
- Pragma_Compile_Time_Warning |
- Pragma_Compiler_Unit |
- Pragma_Convention_Identifier |
- Pragma_CPP_Class |
- Pragma_CPP_Constructor |
- Pragma_CPP_Virtual |
- Pragma_CPP_Vtable |
- Pragma_CPU |
- Pragma_C_Pass_By_Copy |
- Pragma_Comment |
- Pragma_Common_Object |
- Pragma_Complete_Representation |
- Pragma_Complex_Representation |
- Pragma_Component_Alignment |
- Pragma_Controlled |
- Pragma_Convention |
- Pragma_Debug_Policy |
- Pragma_Detect_Blocking |
- Pragma_Default_Storage_Pool |
- Pragma_Dimension |
- Pragma_Discard_Names |
- Pragma_Eliminate |
- Pragma_Elaborate |
- Pragma_Elaborate_All |
- Pragma_Elaborate_Body |
- Pragma_Elaboration_Checks |
- Pragma_Export |
- Pragma_Export_Exception |
- Pragma_Export_Function |
- Pragma_Export_Object |
- Pragma_Export_Procedure |
- Pragma_Export_Value |
- Pragma_Export_Valued_Procedure |
- Pragma_Extend_System |
- Pragma_External |
- Pragma_External_Name_Casing |
- Pragma_Favor_Top_Level |
- Pragma_Fast_Math |
- Pragma_Finalize_Storage_Only |
- Pragma_Float_Representation |
- Pragma_Ident |
- Pragma_Implemented |
- Pragma_Implicit_Packing |
- Pragma_Import |
- Pragma_Import_Exception |
- Pragma_Import_Function |
- Pragma_Import_Object |
- Pragma_Import_Procedure |
- Pragma_Import_Valued_Procedure |
- Pragma_Independent |
- Pragma_Independent_Components |
- Pragma_Initialize_Scalars |
- Pragma_Inline |
- Pragma_Inline_Always |
- Pragma_Inline_Generic |
- Pragma_Inspection_Point |
- Pragma_Interface |
- Pragma_Interface_Name |
- Pragma_Interrupt_Handler |
- Pragma_Interrupt_State |
- Pragma_Interrupt_Priority |
- Pragma_Invariant |
- Pragma_Java_Constructor |
- Pragma_Java_Interface |
- Pragma_Keep_Names |
- Pragma_License |
- Pragma_Link_With |
- Pragma_Linker_Alias |
- Pragma_Linker_Constructor |
- Pragma_Linker_Destructor |
- Pragma_Linker_Options |
- Pragma_Linker_Section |
- Pragma_Locking_Policy |
- Pragma_Long_Float |
- Pragma_Machine_Attribute |
- Pragma_Main |
- Pragma_Main_Storage |
- Pragma_Memory_Size |
- Pragma_No_Body |
- Pragma_No_Return |
- Pragma_No_Run_Time |
- Pragma_No_Strict_Aliasing |
- Pragma_Normalize_Scalars |
- Pragma_Obsolescent |
- Pragma_Ordered |
- Pragma_Optimize |
- Pragma_Optimize_Alignment |
- Pragma_Pack |
- Pragma_Passive |
- Pragma_Preelaborable_Initialization |
- Pragma_Polling |
- Pragma_Persistent_BSS |
- Pragma_Postcondition |
- Pragma_Precondition |
- Pragma_Predicate |
- Pragma_Preelaborate |
- Pragma_Preelaborate_05 |
- Pragma_Priority |
- Pragma_Priority_Specific_Dispatching |
- Pragma_Profile |
- Pragma_Profile_Warnings |
- Pragma_Propagate_Exceptions |
- Pragma_Psect_Object |
- Pragma_Pure |
- Pragma_Pure_05 |
- Pragma_Pure_Function |
- Pragma_Queuing_Policy |
- Pragma_Relative_Deadline |
- Pragma_Remote_Call_Interface |
- Pragma_Remote_Types |
- Pragma_Restricted_Run_Time |
- Pragma_Ravenscar |
- Pragma_Reviewable |
- Pragma_Share_Generic |
- Pragma_Shared |
- Pragma_Shared_Passive |
- Pragma_Short_Circuit_And_Or |
- Pragma_Short_Descriptors |
- Pragma_Storage_Size |
- Pragma_Storage_Unit |
- Pragma_Static_Elaboration_Desired |
- Pragma_Stream_Convert |
- Pragma_Subtitle |
- Pragma_Suppress |
- Pragma_Suppress_Debug_Info |
- Pragma_Suppress_Exception_Locations |
- Pragma_Suppress_Initialization |
- Pragma_System_Name |
- Pragma_Task_Dispatching_Policy |
- Pragma_Task_Info |
- Pragma_Task_Name |
- Pragma_Task_Storage |
- Pragma_Thread_Local_Storage |
- Pragma_Time_Slice |
- Pragma_Title |
- Pragma_Unchecked_Union |
- Pragma_Unimplemented_Unit |
- Pragma_Universal_Aliasing |
- Pragma_Universal_Data |
- Pragma_Unmodified |
- Pragma_Unreferenced |
- Pragma_Unreferenced_Objects |
- Pragma_Unreserve_All_Interrupts |
- Pragma_Unsuppress |
- Pragma_Use_VADS_Size |
- Pragma_Volatile |
- Pragma_Volatile_Components |
- Pragma_Weak_External |
- Pragma_Validity_Checks =>
+ when Pragma_Abort_Defer |
+ Pragma_Assertion_Policy |
+ Pragma_Assume_No_Invalid_Values |
+ Pragma_AST_Entry |
+ Pragma_All_Calls_Remote |
+ Pragma_Annotate |
+ Pragma_Assert |
+ Pragma_Asynchronous |
+ Pragma_Atomic |
+ Pragma_Atomic_Components |
+ Pragma_Attach_Handler |
+ Pragma_Check |
+ Pragma_Check_Name |
+ Pragma_Check_Policy |
+ Pragma_CIL_Constructor |
+ Pragma_Compile_Time_Error |
+ Pragma_Compile_Time_Warning |
+ Pragma_Compiler_Unit |
+ Pragma_Convention_Identifier |
+ Pragma_CPP_Class |
+ Pragma_CPP_Constructor |
+ Pragma_CPP_Virtual |
+ Pragma_CPP_Vtable |
+ Pragma_CPU |
+ Pragma_C_Pass_By_Copy |
+ Pragma_Comment |
+ Pragma_Common_Object |
+ Pragma_Complete_Representation |
+ Pragma_Complex_Representation |
+ Pragma_Component_Alignment |
+ Pragma_Controlled |
+ Pragma_Convention |
+ Pragma_Debug_Policy |
+ Pragma_Detect_Blocking |
+ Pragma_Default_Storage_Pool |
+ Pragma_Disable_Atomic_Synchronization |
+ Pragma_Discard_Names |
+ Pragma_Dispatching_Domain |
+ Pragma_Eliminate |
+ Pragma_Elaborate |
+ Pragma_Elaborate_All |
+ Pragma_Elaborate_Body |
+ Pragma_Elaboration_Checks |
+ Pragma_Enable_Atomic_Synchronization |
+ Pragma_Export |
+ Pragma_Export_Exception |
+ Pragma_Export_Function |
+ Pragma_Export_Object |
+ Pragma_Export_Procedure |
+ Pragma_Export_Value |
+ Pragma_Export_Valued_Procedure |
+ Pragma_Extend_System |
+ Pragma_External |
+ Pragma_External_Name_Casing |
+ Pragma_Favor_Top_Level |
+ Pragma_Fast_Math |
+ Pragma_Finalize_Storage_Only |
+ Pragma_Float_Representation |
+ Pragma_Ident |
+ Pragma_Implementation_Defined |
+ Pragma_Implemented |
+ Pragma_Implicit_Packing |
+ Pragma_Import |
+ Pragma_Import_Exception |
+ Pragma_Import_Function |
+ Pragma_Import_Object |
+ Pragma_Import_Procedure |
+ Pragma_Import_Valued_Procedure |
+ Pragma_Independent |
+ Pragma_Independent_Components |
+ Pragma_Initialize_Scalars |
+ Pragma_Inline |
+ Pragma_Inline_Always |
+ Pragma_Inline_Generic |
+ Pragma_Inspection_Point |
+ Pragma_Interface |
+ Pragma_Interface_Name |
+ Pragma_Interrupt_Handler |
+ Pragma_Interrupt_State |
+ Pragma_Interrupt_Priority |
+ Pragma_Invariant |
+ Pragma_Java_Constructor |
+ Pragma_Java_Interface |
+ Pragma_Keep_Names |
+ Pragma_License |
+ Pragma_Link_With |
+ Pragma_Linker_Alias |
+ Pragma_Linker_Constructor |
+ Pragma_Linker_Destructor |
+ Pragma_Linker_Options |
+ Pragma_Linker_Section |
+ Pragma_Locking_Policy |
+ Pragma_Long_Float |
+ Pragma_Machine_Attribute |
+ Pragma_Main |
+ Pragma_Main_Storage |
+ Pragma_Memory_Size |
+ Pragma_No_Body |
+ Pragma_No_Return |
+ Pragma_No_Run_Time |
+ Pragma_No_Strict_Aliasing |
+ Pragma_Normalize_Scalars |
+ Pragma_Obsolescent |
+ Pragma_Ordered |
+ Pragma_Optimize |
+ Pragma_Optimize_Alignment |
+ Pragma_Pack |
+ Pragma_Passive |
+ Pragma_Preelaborable_Initialization |
+ Pragma_Polling |
+ Pragma_Persistent_BSS |
+ Pragma_Postcondition |
+ Pragma_Precondition |
+ Pragma_Predicate |
+ Pragma_Preelaborate |
+ Pragma_Preelaborate_05 |
+ Pragma_Priority |
+ Pragma_Priority_Specific_Dispatching |
+ Pragma_Profile |
+ Pragma_Profile_Warnings |
+ Pragma_Propagate_Exceptions |
+ Pragma_Psect_Object |
+ Pragma_Pure |
+ Pragma_Pure_05 |
+ Pragma_Pure_12 |
+ Pragma_Pure_Function |
+ Pragma_Queuing_Policy |
+ Pragma_Relative_Deadline |
+ Pragma_Remote_Access_Type |
+ Pragma_Remote_Call_Interface |
+ Pragma_Remote_Types |
+ Pragma_Restricted_Run_Time |
+ Pragma_Ravenscar |
+ Pragma_Reviewable |
+ Pragma_Share_Generic |
+ Pragma_Shared |
+ Pragma_Shared_Passive |
+ Pragma_Short_Circuit_And_Or |
+ Pragma_Short_Descriptors |
+ Pragma_Simple_Storage_Pool_Type |
+ Pragma_Storage_Size |
+ Pragma_Storage_Unit |
+ Pragma_Static_Elaboration_Desired |
+ Pragma_Stream_Convert |
+ Pragma_Subtitle |
+ Pragma_Suppress |
+ Pragma_Suppress_Debug_Info |
+ Pragma_Suppress_Exception_Locations |
+ Pragma_Suppress_Initialization |
+ Pragma_System_Name |
+ Pragma_Task_Dispatching_Policy |
+ Pragma_Task_Info |
+ Pragma_Task_Name |
+ Pragma_Task_Storage |
+ Pragma_Test_Case |
+ Pragma_Thread_Local_Storage |
+ Pragma_Time_Slice |
+ Pragma_Title |
+ Pragma_Unchecked_Union |
+ Pragma_Unimplemented_Unit |
+ Pragma_Universal_Aliasing |
+ Pragma_Universal_Data |
+ Pragma_Unmodified |
+ Pragma_Unreferenced |
+ Pragma_Unreferenced_Objects |
+ Pragma_Unreserve_All_Interrupts |
+ Pragma_Unsuppress |
+ Pragma_Use_VADS_Size |
+ Pragma_Volatile |
+ Pragma_Volatile_Components |
+ Pragma_Weak_External |
+ Pragma_Validity_Checks =>
null;
--------------------
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