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/*
* Copyright 2012, 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.
*/
#ifndef _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_CHECK_AST_H_ // NOLINT
#define _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_CHECK_AST_H_
#include "slang_assert.h"
#include "slang_rs_context.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/StmtVisitor.h"
namespace slang {
// This class is designed to walk a Renderscript/Filterscript AST looking for
// violations. Examples of violations for FS are pointer declarations and
// casts (i.e. no pointers allowed in FS whatsoever).
class RSCheckAST : public clang::StmtVisitor<RSCheckAST> {
private:
slang::RSContext *Context;
clang::ASTContext &C;
clang::SourceManager &mSM;
bool mValid;
unsigned int mTargetAPI;
bool mIsFilterscript;
bool mInKernel;
/// @brief Emit warnings for inapproriate uses of rsSetElementAt
///
/// We warn in case generic rsSetElementAt() is used even though the user
/// could have used a typed rsSetElementAt_<type>() call. Typed calls
/// allow more aggressive optimization (e.g. due to better alias analysis
/// results). Hence, we want to steer the users to use them.
void WarnOnSetElementAt(clang::CallExpr*);
public:
explicit RSCheckAST(RSContext *Con, unsigned int TargetAPI,
bool IsFilterscript)
: Context(Con),
C(Con->getASTContext()),
mSM(C.getSourceManager()),
mValid(true),
mTargetAPI(TargetAPI),
mIsFilterscript(IsFilterscript),
mInKernel(false) {
}
void VisitStmt(clang::Stmt *S);
void VisitCallExpr(clang::CallExpr *CE);
void VisitCastExpr(clang::CastExpr *CE);
void VisitExpr(clang::Expr *E);
void VisitDeclStmt(clang::DeclStmt *DS);
void ValidateFunctionDecl(clang::FunctionDecl *FD);
void ValidateVarDecl(clang::VarDecl *VD);
bool Validate();
};
} // namespace slang
#endif // _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_CHECK_AST_H_ NOLINT
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