Käänteiskopioija

Käänteiskopioija is a Finnish term that translates to "reverse compiler" or "decompiler" in English. It refers to a type of software tool designed to perform the inverse operation of a compiler. While a compiler translates human-readable source code (like C++ or Java) into machine code or bytecode that a computer can execute, a reverse compiler attempts to translate executable machine code or bytecode back into a higher-level programming language.

The primary purpose of a reverse compiler is to aid in understanding or analyzing existing software, especially when the original source code is unavailable. This can be useful for various reasons, including software archaeology, security analysis, reverse engineering, and debugging. By converting executable code back into a more human-readable form, developers can examine the logic and structure of a program without access to its original source.

However, it's important to note that decompilation is not always a perfect process. The reverse-compiled code may not precisely match the original source code due to optimizations performed by the original compiler, loss of information during the compilation process, and the inherent complexity of translating between different levels of abstraction. The output often requires significant human interpretation and may not be directly compilable back into the original program. Reverse compilers are complex tools that are continuously being developed to improve their accuracy and capabilities.