On Thu, Jul 17, 2014 at 10:06 PM, Ron W <ronw.m...@gmail.com> wrote:
> Very interesting project. Somehow, I missed that th1ish wasn't a modified
> TH1 engine. While I appreciate a C-like syntax, I am a bit surprised to see
> the switch away from TCL-like syntax.
>
i kept some of it, but some of it partly conflicts with th1ish being
expression-oriented, whereas TCL is command-oriented (a distinction i
didn't understand clearly at the time). e.g. the [funcCall syntax] is there
only because it was easy to implement early on, before i had decided
whether th1ish was ever going to grow to any useful size. s2 was built from
the ground up to avoid some of th1ish's cruft, and i had the benefit of
having a clear path set out in advance (unlike th1ish, which initially
wasn't intended to grow anywhere near to where it did). i initially kept
TCL-style {strings} in s2, but eventually dropped them in favor of the more
general heredoc. i think the only remaining bits of TCL/TH1 heritage are
the 'catch' keyword and 'proc' as an alias for 'function' (b/c proc is just
easier to type).
Fellow list-member Andy Goth has spent no small amount of time explaining
the subtleties of TCL to me in various off-list discussions about script
engines, but i'm just a TCL'ler at heart. i prefer expression-oriented
syntax with a clear definition of 'identifier' vs 'string', though i will
admit that command-oriented is arguably better/easier for writing unit test
script bindings (initially th1ish's only goal, which it outgrew at some
point).
@Matt: i do it only because it's fun, not because the world needs another
script engine :). It's also my escape mechanism when the real world
bombards me with other problems i should be solving ;).
Will be interesting to see how this project compares to other ;scripting
> engines designed for embedding, like, for example, Lua.
>
in terms of memory use, it seems to be on par with lua, and lua is the
lightest-memory interpreter i've yet run through valgrind. Most of them
individually leak more memory than lua and s2 allocate combined.
--
----- stephan beal
http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
"Freedom is sloppy. But since tyranny's the only guaranteed byproduct of
those who insist on a perfect world, freedom will have to do." -- Bigby Wolf
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