macros

[scriptor]

macros

[Scriptor]

Just to be clear, the current readme is very old and out of date. The updated docs are http://scriptor.github.com/pharen/index.html.

There is a working macro reader, meaning you can quote, unquote, and splice. The # character is currently being used to specify function names when they are used as values:

(fn foo (val) (* val 2))
(map #foo [1 2 3]) ; Returns [2 4 6]

Normally in PHP, you would use regular strings: "foo". This won't work because Pharen does some processing to the names such as converting dashes to underscores, and it won't do that in regular strings.

[francescoagati]

actualli i try to make some example of onlisp with pharen with thinks like macros that define macros but i have some errors when i compile to php.

Have you try some example from onlisp? can i help you on macro definition?

[Scriptor]

I haven't tried using some of the examples from onlisp. Can you send me some of the code?

Also, make sure you are following the documentation from the link I posted above.

[francescoagati]

for example this macro in lisp return another macro in lisp

(defmacro propmacro (propname)
‘(defmacro ,propname (obj)
‘(get ,obj ’,’,propname)))

i have tried to use with pharen but i get always error

[Scriptor]

Could you paste the Pharen code that you use? Also, remember that the unquote symbol in Pharen is ~ (tilde) not , (comma).

Also, I just realized that there is a bug when you try to unquote list/dictionary indexing. For example:
(defmacro foo-key (d) '(~:dict "foo"))
This gives an error.

Otherwise, a macro that returns another macro should be possible.

EDIT: Since this seems to be separate from the original issue, I will create another issue for the list/dictionary indexing bug. Otherwise, if you continue having problems with the macro-inside-macro code, please make sure your version of Pharen is updated. If you still have problems, create another issue so that it can be handled separately from others.