1 /* 2 * Copyright 2010, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_EXPORT_FUNC_H_ // NOLINT 18 #define _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_EXPORT_FUNC_H_ 19 20 #include <list> 21 #include <string> 22 23 #include "llvm/ADT/StringRef.h" 24 #include "llvm/Support/raw_ostream.h" 25 26 #include "clang/AST/Decl.h" 27 28 #include "slang_assert.h" 29 #include "slang_rs_export_type.h" 30 #include "slang_rs_exportable.h" 31 32 namespace llvm { 33 class StructType; 34 } 35 36 namespace clang { 37 class FunctionDecl; 38 } // namespace clang 39 40 namespace slang { 41 42 class RSContext; 43 44 class RSExportFunc : public RSExportable { 45 friend class RSContext; 46 47 private: 48 std::string mName; 49 std::string mMangledName; 50 bool mShouldMangle; 51 RSExportRecordType *mParamPacketType; 52 53 RSExportFunc(RSContext *Context, const llvm::StringRef &Name, 54 const clang::FunctionDecl *FD) 55 : RSExportable(Context, RSExportable::EX_FUNC), 56 mName(Name.data(), Name.size()), 57 mMangledName(), 58 mShouldMangle(false), 59 mParamPacketType(nullptr) { 60 61 mShouldMangle = Context->getMangleContext().shouldMangleDeclName(FD); 62 63 if (mShouldMangle) { 64 llvm::raw_string_ostream BufStm(mMangledName); 65 Context->getMangleContext().mangleName(FD, BufStm); 66 BufStm.flush(); 67 } 68 } 69 70 public: 71 static RSExportFunc *Create(RSContext *Context, 72 const clang::FunctionDecl *FD); 73 74 typedef RSExportRecordType::const_field_iterator const_param_iterator; 75 76 inline const_param_iterator params_begin() const { 77 slangAssert((mParamPacketType != nullptr) && 78 "Get parameter from export function having no parameter!"); 79 return mParamPacketType->fields_begin(); 80 } 81 inline const_param_iterator params_end() const { 82 slangAssert((mParamPacketType != nullptr) && 83 "Get parameter from export function having no parameter!"); 84 return mParamPacketType->fields_end(); 85 } 86 87 inline const std::string &getName(bool mangle = true) const { 88 return (mShouldMangle && mangle) ? mMangledName : mName; 89 } 90 91 inline bool hasParam() const 92 { return (mParamPacketType && !mParamPacketType->getFields().empty()); } 93 inline size_t getNumParameters() const 94 { return ((mParamPacketType) ? mParamPacketType->getFields().size() : 0); } 95 96 inline const RSExportRecordType *getParamPacketType() const 97 { return mParamPacketType; } 98 99 // Check whether the given ParamsPacket type (in LLVM type) is "size 100 // equivalent" to the one obtained from getParamPacketType(). If the @Params 101 // is nullptr, means there must be no any parameters. 102 bool checkParameterPacketType(llvm::StructType *ParamTy) const; 103 }; // RSExportFunc 104 105 106 } // namespace slang 107 108 #endif // _FRAMEWORKS_COMPILE_SLANG_SLANG_RS_EXPORT_FUNC_H_ NOLINT 109
