Re: development of C++ compiler

Grizlyk wrote:

There are C++ compilers, that has been written in old good C. Are C or
pascal perfect languages that can be used to build any powerful OO
language with mutable source representation, as C++ could be?
Obviously no.

Not obviously no. The only reason so many languages use C for their implementation is C has a stable standard that enforces a very high level of portability. So you can write a fully-compliant C compiler for anything, from a wristwatch to a Mars Rover. This implies that a language written in C is therefor well-defined, too.

Is current C++ can be used to build the OO language? Obviously no,
because unfortunatelly C++ simultaneously is not-trivial for
implementation in C or pascal, but quite limited for users.

Not obviously, because C++ has both a stable standard and a well-defined system to extrude C as its compiling layer. The only edge C has is it's older, so it has more cross-compiler support to all those platforms.

Some questions:

I have got a hint, that we can select "core of C++" (that does not
mean the core must be completely compatible with current C++ or its
subset) and use the not-mutable core language to build all concrete-
hardware "complete C++" compilers. The "complete C++" language can be
the powerful OO language with mutable source representation,
structured by dialects.

OO is already a port into C++. It's not the OO features that make C++ less widely useful than C. In fact the opposite is the case. C++ cripples its OO abilities to preserve backwards compatibility with C.

The core language properties must be:
- compiler of the core must be able to be easy implemented by C-like
language

Why "C-like"?

- the core must be very conservative (to resists all possible
improvements)

What's wrong with improvements?

Your remaining checklist indicates C, in its current role as "portable, well-defined, assembler"...

--
Phlip
.

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