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Diffstat (limited to 'gcc-4.4.0/gcc/ada/expander.adb')
| -rw-r--r-- | gcc-4.4.0/gcc/ada/expander.adb | 523 |
1 files changed, 0 insertions, 523 deletions
diff --git a/gcc-4.4.0/gcc/ada/expander.adb b/gcc-4.4.0/gcc/ada/expander.adb deleted file mode 100644 index 674137df1..000000000 --- a/gcc-4.4.0/gcc/ada/expander.adb +++ /dev/null @@ -1,523 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- E X P A N D E R -- --- -- --- B o d y -- --- -- --- 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. -- --- -- ------------------------------------------------------------------------------- - -with Atree; use Atree; -with Debug_A; use Debug_A; -with Errout; use Errout; -with Exp_Aggr; use Exp_Aggr; -with Exp_Attr; use Exp_Attr; -with Exp_Ch2; use Exp_Ch2; -with Exp_Ch3; use Exp_Ch3; -with Exp_Ch4; use Exp_Ch4; -with Exp_Ch5; use Exp_Ch5; -with Exp_Ch6; use Exp_Ch6; -with Exp_Ch7; use Exp_Ch7; -with Exp_Ch8; use Exp_Ch8; -with Exp_Ch9; use Exp_Ch9; -with Exp_Ch11; use Exp_Ch11; -with Exp_Ch12; use Exp_Ch12; -with Exp_Ch13; use Exp_Ch13; -with Exp_Prag; use Exp_Prag; -with Opt; use Opt; -with Rtsfind; use Rtsfind; -with Sem; use Sem; -with Sem_Ch8; use Sem_Ch8; -with Sem_Util; use Sem_Util; -with Sinfo; use Sinfo; -with Table; - -package body Expander is - - ---------------- - -- Local Data -- - ---------------- - - -- The following table is used to save values of the Expander_Active flag - -- when they are saved by Expander_Mode_Save_And_Set. We use an extendible - -- table (which is a bit of overkill) because it is easier than figuring - -- out a maximum value or bothering with range checks! - - package Expander_Flags is new Table.Table ( - Table_Component_Type => Boolean, - Table_Index_Type => Int, - Table_Low_Bound => 0, - Table_Initial => 32, - Table_Increment => 200, - Table_Name => "Expander_Flags"); - - ------------ - -- Expand -- - ------------ - - procedure Expand (N : Node_Id) is - begin - -- If we were analyzing a default expression (or other spec expression) - -- the Full_Analysis flag must be off. If we are in expansion mode then - -- we must be performing a full analysis. If we are analyzing a generic - -- then Expansion must be off. - - pragma Assert - (not (Full_Analysis and then In_Spec_Expression) - and then (Full_Analysis or else not Expander_Active) - and then not (Inside_A_Generic and then Expander_Active)); - - -- There are three reasons for the Expander_Active flag to be false - -- - -- The first is when are not generating code. In this mode the - -- Full_Analysis flag indicates whether we are performing a complete - -- analysis, in which case Full_Analysis = True or a pre-analysis in - -- which case Full_Analysis = False. See the spec of Sem for more - -- info on this. - -- - -- The second reason for the Expander_Active flag to be False is that - -- we are performing a pre-analysis. During pre-analysis all expansion - -- activity is turned off to make sure nodes are semantically decorated - -- but no extra nodes are generated. This is for instance needed for - -- the first pass of aggregate semantic processing. Note that in this - -- case the Full_Analysis flag is set to False because the node will - -- subsequently be re-analyzed with expansion on (see the spec of sem). - - -- Finally, expansion is turned off in a regular compilation if there - -- are serious errors. In that case there will be no further expansion, - -- but one cleanup action may be required: if a transient scope was - -- created (e.g. for a function that returns an unconstrained type) the - -- scope may still be on the stack, and must be removed explicitly, - -- given that the expansion actions that would normally process it will - -- not take place. This prevents cascaded errors due to stack mismatch. - - if not Expander_Active then - Set_Analyzed (N, Full_Analysis); - - if Serious_Errors_Detected > 0 - and then Scope_Is_Transient - then - Scope_Stack.Table - (Scope_Stack.Last).Actions_To_Be_Wrapped_Before := No_List; - Scope_Stack.Table - (Scope_Stack.Last).Actions_To_Be_Wrapped_After := No_List; - - Pop_Scope; - end if; - - return; - - else - Debug_A_Entry ("expanding ", N); - - -- Processing depends on node kind. For full details on the expansion - -- activity required in each case, see bodies of corresponding expand - -- routines. - - begin - case Nkind (N) is - - when N_Abort_Statement => - Expand_N_Abort_Statement (N); - - when N_Accept_Statement => - Expand_N_Accept_Statement (N); - - when N_Aggregate => - Expand_N_Aggregate (N); - - when N_Allocator => - Expand_N_Allocator (N); - - when N_And_Then => - Expand_N_And_Then (N); - - when N_Assignment_Statement => - Expand_N_Assignment_Statement (N); - - when N_Asynchronous_Select => - Expand_N_Asynchronous_Select (N); - - when N_Attribute_Definition_Clause => - Expand_N_Attribute_Definition_Clause (N); - - when N_Attribute_Reference => - Expand_N_Attribute_Reference (N); - - when N_Block_Statement => - Expand_N_Block_Statement (N); - - when N_Case_Statement => - Expand_N_Case_Statement (N); - - when N_Conditional_Entry_Call => - Expand_N_Conditional_Entry_Call (N); - - when N_Conditional_Expression => - Expand_N_Conditional_Expression (N); - - when N_Delay_Relative_Statement => - Expand_N_Delay_Relative_Statement (N); - - when N_Delay_Until_Statement => - Expand_N_Delay_Until_Statement (N); - - when N_Entry_Body => - Expand_N_Entry_Body (N); - - when N_Entry_Call_Statement => - Expand_N_Entry_Call_Statement (N); - - when N_Entry_Declaration => - Expand_N_Entry_Declaration (N); - - when N_Exception_Declaration => - Expand_N_Exception_Declaration (N); - - when N_Exception_Renaming_Declaration => - Expand_N_Exception_Renaming_Declaration (N); - - when N_Exit_Statement => - Expand_N_Exit_Statement (N); - - when N_Expanded_Name => - Expand_N_Expanded_Name (N); - - when N_Explicit_Dereference => - Expand_N_Explicit_Dereference (N); - - when N_Extended_Return_Statement => - Expand_N_Extended_Return_Statement (N); - - when N_Extension_Aggregate => - Expand_N_Extension_Aggregate (N); - - when N_Freeze_Entity => - Expand_N_Freeze_Entity (N); - - when N_Full_Type_Declaration => - Expand_N_Full_Type_Declaration (N); - - when N_Function_Call => - Expand_N_Function_Call (N); - - when N_Generic_Instantiation => - Expand_N_Generic_Instantiation (N); - - when N_Goto_Statement => - Expand_N_Goto_Statement (N); - - when N_Handled_Sequence_Of_Statements => - Expand_N_Handled_Sequence_Of_Statements (N); - - when N_Identifier => - Expand_N_Identifier (N); - - when N_Indexed_Component => - Expand_N_Indexed_Component (N); - - when N_If_Statement => - Expand_N_If_Statement (N); - - when N_In => - Expand_N_In (N); - - when N_Loop_Statement => - Expand_N_Loop_Statement (N); - - when N_Not_In => - Expand_N_Not_In (N); - - when N_Null => - Expand_N_Null (N); - - when N_Object_Declaration => - Expand_N_Object_Declaration (N); - - when N_Object_Renaming_Declaration => - Expand_N_Object_Renaming_Declaration (N); - - when N_Op_Add => - Expand_N_Op_Add (N); - - when N_Op_Abs => - Expand_N_Op_Abs (N); - - when N_Op_And => - Expand_N_Op_And (N); - - when N_Op_Concat => - Expand_N_Op_Concat (N); - - when N_Op_Divide => - Expand_N_Op_Divide (N); - - when N_Op_Eq => - Expand_N_Op_Eq (N); - - when N_Op_Expon => - Expand_N_Op_Expon (N); - - when N_Op_Ge => - Expand_N_Op_Ge (N); - - when N_Op_Gt => - Expand_N_Op_Gt (N); - - when N_Op_Le => - Expand_N_Op_Le (N); - - when N_Op_Lt => - Expand_N_Op_Lt (N); - - when N_Op_Minus => - Expand_N_Op_Minus (N); - - when N_Op_Mod => - Expand_N_Op_Mod (N); - - when N_Op_Multiply => - Expand_N_Op_Multiply (N); - - when N_Op_Ne => - Expand_N_Op_Ne (N); - - when N_Op_Not => - Expand_N_Op_Not (N); - - when N_Op_Or => - Expand_N_Op_Or (N); - - when N_Op_Plus => - Expand_N_Op_Plus (N); - - when N_Op_Rem => - Expand_N_Op_Rem (N); - - when N_Op_Rotate_Left => - Expand_N_Op_Rotate_Left (N); - - when N_Op_Rotate_Right => - Expand_N_Op_Rotate_Right (N); - - when N_Op_Shift_Left => - Expand_N_Op_Shift_Left (N); - - when N_Op_Shift_Right => - Expand_N_Op_Shift_Right (N); - - when N_Op_Shift_Right_Arithmetic => - Expand_N_Op_Shift_Right_Arithmetic (N); - - when N_Op_Subtract => - Expand_N_Op_Subtract (N); - - when N_Op_Xor => - Expand_N_Op_Xor (N); - - when N_Or_Else => - Expand_N_Or_Else (N); - - when N_Package_Body => - Expand_N_Package_Body (N); - - when N_Package_Declaration => - Expand_N_Package_Declaration (N); - - when N_Package_Renaming_Declaration => - Expand_N_Package_Renaming_Declaration (N); - - when N_Subprogram_Renaming_Declaration => - Expand_N_Subprogram_Renaming_Declaration (N); - - when N_Pragma => - Expand_N_Pragma (N); - - when N_Procedure_Call_Statement => - Expand_N_Procedure_Call_Statement (N); - - when N_Protected_Type_Declaration => - Expand_N_Protected_Type_Declaration (N); - - when N_Protected_Body => - Expand_N_Protected_Body (N); - - when N_Qualified_Expression => - Expand_N_Qualified_Expression (N); - - when N_Raise_Statement => - Expand_N_Raise_Statement (N); - - when N_Raise_Constraint_Error => - Expand_N_Raise_Constraint_Error (N); - - when N_Raise_Program_Error => - Expand_N_Raise_Program_Error (N); - - when N_Raise_Storage_Error => - Expand_N_Raise_Storage_Error (N); - - when N_Real_Literal => - Expand_N_Real_Literal (N); - - when N_Record_Representation_Clause => - Expand_N_Record_Representation_Clause (N); - - when N_Requeue_Statement => - Expand_N_Requeue_Statement (N); - - when N_Simple_Return_Statement => - Expand_N_Simple_Return_Statement (N); - - when N_Selected_Component => - Expand_N_Selected_Component (N); - - when N_Selective_Accept => - Expand_N_Selective_Accept (N); - - when N_Single_Task_Declaration => - Expand_N_Single_Task_Declaration (N); - - when N_Slice => - Expand_N_Slice (N); - - when N_Subtype_Indication => - Expand_N_Subtype_Indication (N); - - when N_Subprogram_Body => - Expand_N_Subprogram_Body (N); - - when N_Subprogram_Body_Stub => - Expand_N_Subprogram_Body_Stub (N); - - when N_Subprogram_Declaration => - Expand_N_Subprogram_Declaration (N); - - when N_Subprogram_Info => - Expand_N_Subprogram_Info (N); - - when N_Task_Body => - Expand_N_Task_Body (N); - - when N_Task_Type_Declaration => - Expand_N_Task_Type_Declaration (N); - - when N_Timed_Entry_Call => - Expand_N_Timed_Entry_Call (N); - - when N_Type_Conversion => - Expand_N_Type_Conversion (N); - - when N_Unchecked_Expression => - Expand_N_Unchecked_Expression (N); - - when N_Unchecked_Type_Conversion => - Expand_N_Unchecked_Type_Conversion (N); - - when N_Variant_Part => - Expand_N_Variant_Part (N); - - -- For all other node kinds, no expansion activity is required - - when others => null; - - end case; - - exception - when RE_Not_Available => - return; - end; - - -- Set result as analyzed and then do a possible transient wrap. The - -- transient wrap must be done after the Analyzed flag is set on, so - -- that we do not get a recursive attempt to expand the node N. - - Set_Analyzed (N); - - -- Deal with transient scopes - - if Scope_Is_Transient and then N = Node_To_Be_Wrapped then - - case Nkind (N) is - when N_Statement_Other_Than_Procedure_Call | - N_Procedure_Call_Statement => - Wrap_Transient_Statement (N); - - when N_Object_Declaration | - N_Object_Renaming_Declaration | - N_Subtype_Declaration => - Wrap_Transient_Declaration (N); - - when others => Wrap_Transient_Expression (N); - end case; - end if; - - Debug_A_Exit ("expanding ", N, " (done)"); - end if; - - end Expand; - - --------------------------- - -- Expander_Mode_Restore -- - --------------------------- - - procedure Expander_Mode_Restore is - begin - -- Not active (has no effect) in ASIS mode (see comments in spec of - -- Expander_Mode_Save_And_Set). - - if ASIS_Mode then - return; - end if; - - -- Otherwise restore the flag - - Expander_Active := Expander_Flags.Table (Expander_Flags.Last); - Expander_Flags.Decrement_Last; - - -- Keep expander off if serious errors detected. In this case we do not - -- need expansion, and continued expansion may cause cascaded errors or - -- compiler bombs. - - if Serious_Errors_Detected /= 0 then - Expander_Active := False; - end if; - end Expander_Mode_Restore; - - -------------------------------- - -- Expander_Mode_Save_And_Set -- - -------------------------------- - - procedure Expander_Mode_Save_And_Set (Status : Boolean) is - begin - -- Not active (has no effect) in ASIS mode (see comments in spec of - -- Expander_Mode_Save_And_Set). - - if ASIS_Mode then - return; - end if; - - -- Otherwise save and set the flag - - Expander_Flags.Increment_Last; - Expander_Flags.Table (Expander_Flags.Last) := Expander_Active; - Expander_Active := Status; - end Expander_Mode_Save_And_Set; - -end Expander; |