| /* |
| * 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. |
| */ |
| |
| // Define a generic interface to a file/memory region that contains |
| // a bitcode file, a wrapped bitcode file, or a data file to wrap. |
| |
| #ifndef LLVM_WRAP_WRAPPER_INPUT_H__ |
| #define LLVM_WRAP_WRAPPER_INPUT_H__ |
| |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include "support_macros.h" |
| |
| // The following is a generic interface to a file/memory region that contains |
| // a bitcode file, a wrapped bitcode file, or data file to wrap. |
| class WrapperInput { |
| public: |
| WrapperInput() {} |
| virtual ~WrapperInput() {} |
| // Tries to read the requested number of bytes into the buffer. Returns the |
| // actual number of bytes read. |
| virtual size_t Read(uint8_t* buffer, size_t wanted) = 0; |
| // Returns true if at end of input. Note: May return false until |
| // Read is called, and returns 0. |
| virtual bool AtEof() = 0; |
| // Returns the size of the input (in bytes). |
| virtual off_t Size() = 0; |
| // Moves to the given offset within the input region. Returns false |
| // if unable to move to that position. |
| virtual bool Seek(uint32_t pos) = 0; |
| private: |
| DISALLOW_CLASS_COPY_AND_ASSIGN(WrapperInput); |
| }; |
| |
| #endif // LLVM_WRAP_WRAPPER_INPUT_H__ |