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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <sal/config.h>
#include <sal/types.h>
#include <cassert>
#include "abi.hxx"
enum StructKind
{
STRUCT_KIND_EMPTY,
STRUCT_KIND_FLOAT,
STRUCT_KIND_DOUBLE,
STRUCT_KIND_POD,
STRUCT_KIND_DTOR
};
static StructKind getStructKind(typelib_CompoundTypeDescription const* type)
{
StructKind k = type->pBaseTypeDescription == 0 ? STRUCT_KIND_EMPTY
: getStructKind(type->pBaseTypeDescription);
for (sal_Int32 i = 0; i != type->nMembers; ++i)
{
StructKind k2 = StructKind();
switch (type->ppTypeRefs[i]->eTypeClass)
{
case typelib_TypeClass_BOOLEAN:
case typelib_TypeClass_BYTE:
case typelib_TypeClass_SHORT:
case typelib_TypeClass_UNSIGNED_SHORT:
case typelib_TypeClass_LONG:
case typelib_TypeClass_UNSIGNED_LONG:
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
case typelib_TypeClass_CHAR:
case typelib_TypeClass_ENUM:
k2 = STRUCT_KIND_POD;
break;
case typelib_TypeClass_FLOAT:
k2 = STRUCT_KIND_FLOAT;
break;
case typelib_TypeClass_DOUBLE:
k2 = STRUCT_KIND_DOUBLE;
break;
case typelib_TypeClass_STRING:
case typelib_TypeClass_TYPE:
case typelib_TypeClass_ANY:
case typelib_TypeClass_SEQUENCE:
case typelib_TypeClass_INTERFACE:
k2 = STRUCT_KIND_DTOR;
break;
case typelib_TypeClass_STRUCT:
{
typelib_TypeDescription* td = 0;
TYPELIB_DANGER_GET(&td, type->ppTypeRefs[i]);
k2 = getStructKind(reinterpret_cast<typelib_CompoundTypeDescription const*>(td));
TYPELIB_DANGER_RELEASE(td);
break;
}
default:
assert(false);
}
switch (k2)
{
case STRUCT_KIND_EMPTY:
// this means an empty sub-object, which nevertheless obtains a byte
// of storage (TODO: does it?), so the full object cannot be a
// homogeneous collection of float or double
case STRUCT_KIND_POD:
assert(k != STRUCT_KIND_DTOR);
k = STRUCT_KIND_POD;
break;
case STRUCT_KIND_FLOAT:
case STRUCT_KIND_DOUBLE:
if (k == STRUCT_KIND_EMPTY)
{
k = k2;
}
else if (k != k2)
{
assert(k != STRUCT_KIND_DTOR);
k = STRUCT_KIND_POD;
}
break;
case STRUCT_KIND_DTOR:
return STRUCT_KIND_DTOR;
}
}
return k;
}
ReturnKind getReturnKind(typelib_TypeDescription const* type)
{
switch (type->eTypeClass)
{
default:
assert(false);
[[fallthrough]];
case typelib_TypeClass_VOID:
case typelib_TypeClass_BOOLEAN:
case typelib_TypeClass_BYTE:
case typelib_TypeClass_SHORT:
case typelib_TypeClass_UNSIGNED_SHORT:
case typelib_TypeClass_LONG:
case typelib_TypeClass_UNSIGNED_LONG:
case typelib_TypeClass_HYPER:
case typelib_TypeClass_UNSIGNED_HYPER:
case typelib_TypeClass_FLOAT:
case typelib_TypeClass_DOUBLE:
case typelib_TypeClass_CHAR:
case typelib_TypeClass_ENUM:
assert(type->nSize <= 16);
return RETURN_KIND_REG;
case typelib_TypeClass_STRING:
case typelib_TypeClass_TYPE:
case typelib_TypeClass_ANY:
case typelib_TypeClass_SEQUENCE:
case typelib_TypeClass_INTERFACE:
return RETURN_KIND_INDIRECT;
case typelib_TypeClass_STRUCT:
if (type->nSize > 16)
{
return RETURN_KIND_INDIRECT;
}
switch (getStructKind(reinterpret_cast<typelib_CompoundTypeDescription const*>(type)))
{
case STRUCT_KIND_FLOAT:
return RETURN_KIND_HFA_FLOAT;
case STRUCT_KIND_DOUBLE:
return RETURN_KIND_HFA_DOUBLE;
case STRUCT_KIND_DTOR:
return RETURN_KIND_INDIRECT;
default:
return RETURN_KIND_REG;
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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