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/*
* Copyright 2010, The Android Open Source Project
*
* Licensed 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "slang_rs_export_element.h"
#include "clang/AST/Decl.h"
#include "clang/AST/Type.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/IdentifierTable.h"
#include "slang_rs_context.h"
#include "slang_rs_export_type.h"
namespace slang {
bool RSExportElement::Initialized = false;
RSExportElement::ElementInfoMapTy RSExportElement::ElementInfoMap;
void RSExportElement::Init() {
if (!Initialized) {
// Initialize ElementInfoMap
#define ENUM_RS_DATA_ELEMENT(_name, _dk, _dt, _norm, _vsize) \
{ \
ElementInfo *EI = new ElementInfo; \
EI->kind = RSExportPrimitiveType::DataKind ## _dk; \
EI->type = RSExportPrimitiveType::DataType ## _dt; \
EI->normalized = _norm; \
EI->vsize = _vsize; \
\
llvm::StringRef Name(_name); \
ElementInfoMap.insert( \
ElementInfoMapTy::value_type::Create( \
Name.begin(), \
Name.end(), \
ElementInfoMap.getAllocator(), \
EI)); \
}
#include "RSDataElementEnums.inc"
Initialized = true;
}
return;
}
RSExportType *RSExportElement::Create(RSContext *Context,
const clang::Type *T,
const ElementInfo *EI) {
// Create RSExportType corresponded to the @T first and then verify
llvm::StringRef TypeName;
RSExportType *ET = NULL;
if (!Initialized)
Init();
assert(EI != NULL && "Element info not found");
if (!RSExportType::NormalizeType(T, TypeName))
return NULL;
switch (T->getTypeClass()) {
case clang::Type::Builtin:
case clang::Type::Pointer: {
assert(EI->vsize == 1 && "Element not a primitive class (please check "
"your macro)");
RSExportPrimitiveType *EPT =
RSExportPrimitiveType::Create(Context,
T,
TypeName,
EI->kind,
EI->normalized);
// Verify
assert(EI->type == EPT->getType() && "Element has unexpected type");
ET = EPT;
break;
}
case clang::Type::ExtVector: {
assert(EI->vsize > 1 && "Element not a vector class (please check your "
"macro)");
RSExportVectorType *EVT =
RSExportVectorType::Create(Context,
static_cast<clang::ExtVectorType*>(
T->getCanonicalTypeInternal()
.getTypePtr()),
TypeName,
EI->kind,
EI->normalized);
// Verify
assert(EI->type == EVT->getType() && "Element has unexpected type");
assert(EI->vsize == EVT->getNumElement() && "Element has unexpected size "
"of vector");
ET = EVT;
break;
}
default: {
// TODO(zonr): warn that type is not exportable
fprintf(stderr, "RSExportElement::Create : type '%s' is not exportable\n",
T->getTypeClassName());
break;
}
}
return ET;
}
RSExportType *RSExportElement::CreateFromDecl(RSContext *Context,
const clang::DeclaratorDecl *DD) {
const clang::Type* T = RSExportType::GetTypeOfDecl(DD);
const clang::Type* CT = GET_CANONICAL_TYPE(T);
const ElementInfo* EI = NULL;
// Note: RS element like rs_pixel_rgb elements are either in the type of
// primitive or vector.
if ((CT->getTypeClass() != clang::Type::Builtin) &&
(CT->getTypeClass() != clang::Type::ExtVector)) {
return RSExportType::Create(Context, T);
}
// Following the typedef chain to see whether it's an element name like
// rs_pixel_rgb or its alias (via typedef).
while (T != CT) {
if (T->getTypeClass() != clang::Type::Typedef) {
break;
} else {
const clang::TypedefType *TT = static_cast<const clang::TypedefType*>(T);
const clang::TypedefDecl *TD = TT->getDecl();
EI = GetElementInfo(TD->getName());
if (EI != NULL)
break;
T = TD->getUnderlyingType().getTypePtr();
}
}
if (EI == NULL) {
return RSExportType::Create(Context, T);
} else {
return RSExportElement::Create(Context, T, EI);
}
}
const RSExportElement::ElementInfo *
RSExportElement::GetElementInfo(const llvm::StringRef &Name) {
if (!Initialized)
Init();
ElementInfoMapTy::const_iterator I = ElementInfoMap.find(Name);
if (I == ElementInfoMap.end())
return NULL;
else
return I->getValue();
}
} // namespace slang
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