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-------------------------------------------------------------------------------
-- (C) Altran Praxis Limited
-------------------------------------------------------------------------------
--
-- The SPARK toolset is free software; you can redistribute it and/or modify it
-- under terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 3, or (at your option) any later
-- version. The SPARK toolset is distributed in the hope that it will be
-- useful, but WITHOUT 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 the SPARK toolset; see file
-- COPYING3. If not, go to http://www.gnu.org/licenses for a complete copy of
-- the license.
--
--=============================================================================
with SystemErrors, Statistics;
package body ComponentErrors is
procedure Initialise (TheErrorHeap : out HeapOfErrors) is
begin
--# accept F, 32, TheErrorHeap.ListOfComponentErrors, "Initialization partial but effective" &
--# F, 31, TheErrorHeap.ListOfComponentErrors, "Initialization partial but effective" &
--# F, 602, TheErrorHeap, TheErrorHeap.ListOfComponentErrors, "Initialization partial but effective";
TheErrorHeap.HighMark := NullComponentError;
TheErrorHeap.NextFreeComponent := NullComponentError;
end Initialise;
procedure CreateError
(TheErrorHeap : in out HeapOfErrors;
HeapSeq : in out Heap.HeapRecord;
ErrClass : in ErrorClass;
ErrVal : in Natural;
Position : in LexTokenManager.Token_Position;
Sym : in Dictionary.Symbol;
NewError : out ComponentError)
is
NewErrorLocal : ComponentError;
NodeList : SeqAlgebra.Seq;
begin
if TheErrorHeap.NextFreeComponent /= NullComponentError then
-- returned locations are re-usable
NewErrorLocal := TheErrorHeap.NextFreeComponent;
TheErrorHeap.NextFreeComponent := TheErrorHeap.ListOfComponentErrors (NewErrorLocal).NextError;
elsif TheErrorHeap.HighMark < MaxNumComponentErrors then
-- return list empty but unused cells remain in array
TheErrorHeap.HighMark := TheErrorHeap.HighMark + 1;
NewErrorLocal := TheErrorHeap.HighMark;
else
--returned list empty and array used up, nothing left
Statistics.SetTableUsage (Statistics.RecordErrors, MaxNumComponentErrors);
SystemErrors.Fatal_Error (Sys_Err => SystemErrors.Component_Error_Overflow,
Msg => "");
NewErrorLocal := NullComponentError; -- strictly unnecessary since prev lines doesn't return
end if;
-- if we get here we have a new, valid index into the array (which may point at garbage)
SeqAlgebra.CreateSeq (HeapSeq, NodeList);
TheErrorHeap.ListOfComponentErrors (NewErrorLocal) :=
ErrorDescriptor'
(ErrClass => ErrClass,
ErrVal => ErrVal,
Position => Position,
Sym => Sym,
AssociatedComponentNodes => NodeList,
NextError => NullComponentError);
NewError := NewErrorLocal;
end CreateError;
procedure DisposeOfError (TheErrorHeap : in out HeapOfErrors;
HeapSeq : in out Heap.HeapRecord;
OldError : in ComponentError) is
begin
SeqAlgebra.DisposeOfSeq (HeapSeq, TheErrorHeap.ListOfComponentErrors (OldError).AssociatedComponentNodes);
TheErrorHeap.ListOfComponentErrors (OldError).NextError := TheErrorHeap.NextFreeComponent;
TheErrorHeap.NextFreeComponent := OldError;
end DisposeOfError;
function IsSameError
(TheErrorHeap : HeapOfErrors;
Error1 : ComponentError;
Error2 : ComponentError)
return Boolean
is
FirstError, SecondError : ErrorDescriptor;
begin
FirstError := TheErrorHeap.ListOfComponentErrors (Error1);
SecondError := TheErrorHeap.ListOfComponentErrors (Error2);
return FirstError.ErrClass = SecondError.ErrClass
and then FirstError.ErrVal = SecondError.ErrVal
and then FirstError.Position = SecondError.Position
and then FirstError.Sym = SecondError.Sym;
end IsSameError;
function ClassOfError (TheErrorHeap : HeapOfErrors;
Error : ComponentError) return ErrorClass is
begin
return TheErrorHeap.ListOfComponentErrors (Error).ErrClass;
end ClassOfError;
function ValueOfError (TheErrorHeap : HeapOfErrors;
Error : ComponentError) return Natural is
begin
return TheErrorHeap.ListOfComponentErrors (Error).ErrVal;
end ValueOfError;
function PositionOfError (TheErrorHeap : HeapOfErrors;
Error : ComponentError) return LexTokenManager.Token_Position is
begin
return TheErrorHeap.ListOfComponentErrors (Error).Position;
end PositionOfError;
function SymOfError (TheErrorHeap : HeapOfErrors;
Error : ComponentError) return Dictionary.Symbol is
begin
return TheErrorHeap.ListOfComponentErrors (Error).Sym;
end SymOfError;
function AssociatedComponentNodesOfError (TheErrorHeap : HeapOfErrors;
Error : ComponentError) return SeqAlgebra.Seq is
begin
return TheErrorHeap.ListOfComponentErrors (Error).AssociatedComponentNodes;
end AssociatedComponentNodesOfError;
procedure ReportUsage (TheErrorHeap : in HeapOfErrors) is
begin
Statistics.SetTableUsage (Statistics.RecordErrors, TheErrorHeap.HighMark);
end ReportUsage;
end ComponentErrors;
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