[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Tinycc-devel] Can be extended for C++?

From: Chris Lattner
Subject: Re: [Tinycc-devel] Can be extended for C++?
Date: Mon, 15 Oct 2007 07:20:39 -0700

On Oct 15, 2007, at 2:59 AM, Ivo wrote:

On Monday 15 October 2007 11:31, Sanghyeon Seo wrote:
2007/10/15, ShangHongzhang 62185 <address@hidden>:
Is it possible to extend the TCC for supporting C++ syntax parsing?
I think it must be very hard to do so, isn't it?

I think it would be impossibly hard to do so.

Yes. The code generator is intertwined with the parser. Also, I seem to remember reading somewhere that a single pass C++ compiler is impossible
due to the nature of the language. tcc is a single pass compiler.

Perhaps you could put a C++-to-C compiler in front of tcc. Such code can still be found on the net. IIRC the very first C++ implementation was done
like that (cfront plus a normal C-compiler). Later on, certain
C++ "features" were nearly impossible to translate and they moved on to a dedicated C++ compiler. Perhaps "they" have overcome these problems because
LLVM is able to generate C from C++.

Converting C++ to C is just as hard as parsing C++ in the first place. Also (FWIW) the LLVM C++ to C support does not produce "human readable" C code, it produces really ugly low-level C code that uses gotos etc. It also depends on llvm-gcc.

You might be interested in http://clang.llvm.org though, which does not depend on GCC at all. But its C++ support is just starting.


reply via email to

[Prev in Thread] Current Thread [Next in Thread]