Commit Graph

254 Commits

Author SHA1 Message Date
Bob Tolbert
c80e3c75a0 Adding automatic gensym macro
Adding to the manual gensym for macros are 2 new
macros, but very literal from the CL in
letoverlambda.

The first is the (with-gensyms ...) macro that
can generate a small set of syms for a macro. Works
something like:

(defmacro adder2 [A B]
  (with-gensyms [a b]
    `(let [[~a ~A] [~b ~B]]
       (+ ~a ~b))))

and ~a and ~b will be replaced with (gensym "a") and
(gensym "b") respectively.

Then the final macro is a new defmacro that will automatically
replace symbols prefaced with "g!" with a new gensym based on the
rest of the symbol. So in this final version of 'nif':

(defmacro/g! nif4 (expr pos zero neg)
  `(let [[~g!result ~expr]]
     (cond [(pos? ~g!result) ~pos]
           [(zero? ~g!result) ~zero]
           [(neg? ~g!result) ~neg])))

all uses of ~g!result will be replaced with (gensym "result").
2013-12-15 18:47:46 -07:00
Bob Tolbert
f5d88bb108 gensym in Hy
Simple implementation of gensym in Hy.

Returns a new HySymbol.

Usable in macros like:

(defmacro nif [expr pos zero neg]
  (let [[g (gensym)]]
    `(let [[~g ~expr]]
       (cond [(pos? ~g) ~pos]
             [(zero? ~g) ~zero]
             [(neg? ~g) ~neg]))))

This addresses all the general comments about (gensym), and doesn't
try to implement "auto-gensym" yet. But clearly the macro approach
instead of the pre-processor approach (as described in the
letoverlambda (http://letoverlambda.com/index.cl/guest/chap3.html#sec_5)
is the way to go
2013-12-15 12:36:36 -07:00
Abhishek L
f72ff53f41 Operators + and * work without args, fixes #372
Like other lisps, operators `+` and `*` return their identity values
when called with no arguments. Also with a single operand they return
the operand.

This fixes #372
2013-12-16 00:04:43 +05:30
Abhishek L
948e6d34c7 Merge branch master onto pr/284
Conflicts:
	hy/core/language.hy
2013-12-06 20:07:39 +05:30
Morten Linderud
699396b5a3 Merge pull request #358 from theanalyst/feature/macros-none
Allow macros to return None, fixes #357
2013-12-06 03:53:44 -08:00
Abhishek L
f1c68bd51a Allow macros to return None, fixes #357
Allows Hy macros to return None, to test this

  (defmacro foo [])
  (foo)

Should work now
2013-12-06 00:27:45 +05:30
Nicolas Dandrimont
cc147512fc Merge branch 'paultag/feature/support-question-marks' of https://github.com/paultag/hy into paultag-paultag/feature/support-question-marks
Conflicts:
	hy/core/language.hy
2013-12-05 19:28:59 +01:00
Nicolas Dandrimont
f0a9149383 Merge branch 'string-cast' of https://github.com/Willyfrog/hy into Willyfrog-string-cast 2013-12-05 19:04:22 +01:00
Paul Tagliamonte
fd60a864eb Translate all foo? -> is_foo. Close #334
The fancypants Hy award goes to Nick for coming up with the quoted
symbol hack for exports. This broke with foo?, since the export string
needs to be is_foo, but using a quoted string will pick up the change
due to it being a Symbol.

Mad clown love for that, @olasd.
2013-12-01 15:03:31 -05:00
agentultra
179017b9bd Move anaphoric macros to contrib module 2013-11-28 23:53:02 -05:00
agentultra
20df6a5532 Make --map-when accept a predicate function instead of a form
This makes it look a little cleaner:

    (list (--map-when odd? (* it 3) [1 2 3 4 5]))
2013-11-28 16:45:07 -05:00
agentultra
8e44cc3d9a Add --each-while and --map-when
A couple of more macros:

    hy> (--each-while [1 2 3 4 5] (< it 3) (print it))
    1
    2
    3
    hy>

```--each-while``` continues to evaluate the body form while the
predicate form is true for each element in the list.

```--map-when``` uses a predicate form to determine when to apply the
map form upon the element in the list:

    hy> (list (--map-when (even? it) (* it 3) [1 2 3 4]))
    [1, 6, 3, 12]
2013-11-28 16:15:23 -05:00
agentultra
2106a0e5d4 Add anaphoric versions of map, filter, and foreach
Anaphoric macros reduce the need to specify a lambda by binding a
special name in a form passed as a parameter to the macro. This allows
you to write more concise code:

    (= (list (--filter (even? it) [1 2 3 4])) [2 4])

This patch just adds a few basic ones. Other forms that can be
converted to anaphoric versions include reduce, remove, enumerate,
etc.
2013-11-28 13:23:09 -05:00
Nicolas Dandrimont
26b052c76e language.hy whitespace fix 2013-11-02 20:50:21 +01:00
Nicolas Dandrimont
59e51166fb Allow calling kwapply with mixed names and dicts 2013-11-02 20:50:21 +01:00
Nicolas Dandrimont
83bb1513db Make apply api-compatible with python (args is not mandatory) 2013-11-02 20:50:20 +01:00
Guillermo Vaya
f5754b404e Define kwapply as a macro
Define apply if python3
Added apply tests
2013-11-02 18:18:16 +01:00
Sean B. Palmer
defccc6853 Added macroexpand-1 2013-10-11 13:50:10 +01:00
Sean B. Palmer
2e60d6b47b Added a simple test for macroexpand 2013-10-11 12:03:52 +01:00
Guillermo Vaya
34275fab60 Added type coercing to the right integer for the platform 2013-10-11 08:35:32 +02:00
Guillermo Vaya
f61d702788 Int conversion to long in py2.x
Updated to current master
    Droped HyInt/HyLong commit
2013-10-11 01:49:42 +02:00
Guillermo Vaya
25bf3dec42 Add a method for casting into byte string or unicode depending on python version 2013-10-03 23:39:17 +02:00
Nicolas Dandrimont
875d5f2ff5 Rewrite the bootstrap macros in hy
This gets rid of the dichotomy between bootstrap.py and macros.hy,
by making both files hy modules.

I added some error checking to make the macros more resilient. The
biggest (user-visible) change is the change in cond, which now only
accepts lists as arguments. Tests updated accordingly.

Closes: #176 (whoops, no more bootstrap)
2013-09-29 18:13:28 +02:00
Nicolas Dandrimont
6a7d97c286 Add test for unquote-splice behavior 2013-09-22 15:12:59 +02:00
Bob Tolbert
399ea1889a Second (smaller) set of native core functions
This rounds out the first pass at a set of core functions, adding
some that were not in the first PR.

From here I'm working on a contrib.seq and contrib.io module to
hold less obvious but maybe interesting native functions that can
move to core if desired.

This should also close out issure #150 asking for some core
functions like these.
2013-09-03 13:52:00 -06:00
Paul Tagliamonte
b2c51d0130 Merge branch 'master' into pr/287 2013-09-02 22:55:31 -04:00
kaizoku
b892ec4e66 Add zero? predicate to check if an object is zero 2013-09-02 02:28:21 -07:00
Konrad Hinsen
b11f2fcf49 Macro if-python2 for compile-time choice between Python 2 and Python 3 code branches 2013-09-02 09:58:35 +02:00
Paul Tagliamonte
1c12b2870e Add yield from via macro magic.
This will let us use (basic) yield from behavior from Python 2. This
 isn't complete, and is low-hanging fruit for others willing to hack
 on hy.

 I've also changed the macrosystem to allow for proper bootstrapping.
 This is similar to how it's done elsewhere in the codebase (stdlib
 stuff).
2013-08-17 11:37:48 -04:00
Bob Tolbert
41ae4f4d2c Update:
Updated most methods to replace While with For, and added tons of new tests
    for things like (cycle []) and lists with None's in them.

    thanks @olasd

Add set of new core functions

Add set of new core functions to the stdlib.

Moved the auto-import code from compile_expression to
HySymbol so that "even?' in this style expression will
be found and imported.

(list (filter even? [1 2 3 4 5]))

The core functions are documented in 2 sections, one
for basic functions like (even?..) and (nth ...) and
one for all the sequence functions.

Update: This removes all the caching decorators, misnamed as
'lazy-seq' from the core. All sequence methods now just use
yield to return a generator, so they are Python-lazy

Further refinements of core functions

Cleaned up the docs to use 'iterator' instead of 'generator'

Fixed drop to just return the iterator instead of an extra
yield loop. But also added a test to catch dropping too
many.
2013-07-29 08:52:28 -06:00
Nicolas Dandrimont
9278b24318 Allow quoting lambda list keywords.
This fixes an obvious bug where LambdaListKeywords couldn't be quoted.
2013-07-28 00:38:16 +02:00
Paul Tagliamonte
acfc5c6aa5 Merge branch 'master' into pr/236 2013-07-27 10:22:38 -04:00
Nicolas Dandrimont
a17dcdbffb Make with return the last expression from its branch
Thanks @rwtolbert for the bug report
2013-07-19 00:43:12 +02:00
Paul Tagliamonte
ad86dff754 Merge branch 'master' into pr/254 2013-07-18 00:00:42 -04:00
rwtolbert
348eaaa0f4 Merge pull request #243 from paultag/paultag/bugfix/fix-yield
Fix yielding to not suck (#151)

yay team
2013-07-16 18:27:14 -07:00
Paul Tagliamonte
3dde930ede Merge branch 'master' into pr/236 2013-07-16 20:57:29 -04:00
Guillermo Vaya
6778e9b2e1 added @tuturto sugesstions and flake8 errors 2013-07-16 20:41:56 +02:00
Guillermo Vaya
dda291cfb5 make assoc accept multiple values, also added a even/odd check for checkargs 2013-07-16 14:35:57 +02:00
Bob Tolbert
c42492ad84 Fix missing docstrings from defclass issue #248
Added ability to parse doc strings set in defclass declarations,
likei:

(defclass Foo [object]
  "this is the doc string"
  [[x 1]])
2013-07-15 06:58:08 -06:00
Paul Tagliamonte
7c91913122 Fix yielding to not suck (#151)
This adds a class to avoid returning when we have a Yieldable
 expression contained in the body of the function. This breaks Python
 2.x, and ought to break Python 3.x, but doesn't.

 We need this fo' context managers, etc.

 This commit also has work from @rwtolbert adding new testcases and
 fixes for yielded entries behind a while / for.
2013-07-14 13:11:27 -04:00
Bob Tolbert
62f1f40830 Add set of new core functions
Add set of new core functions to the stdlib.

Moved the auto-import code from compile_expression to
HySymbol so that "even?' in this style expression will
be found and imported.

(list (filter even? [1 2 3 4 5]))

The core functions are documented in 2 sections, one
for basic functions like (even?..) and (nth ...) and
one for all the sequence functions.

Update: This removes all the caching decorators, misnamed as
'lazy-seq' from the core. All sequence methods now just use
yield to return a generator, so they are Python-lazy

Further refinements of core functions

Cleaned up the docs to use 'iterator' instead of 'generator'

Fixed drop to just return the iterator instead of an extra
yield loop. But also added a test to catch dropping too
many.
2013-07-13 09:55:16 -06:00
Joe H. Rahme
236ebccc74 Removes setf in favor of setv 2013-07-10 02:16:49 +02:00
Paul Tagliamonte
86af7eacf1 Add in a new core language file.
This will let us implement common functions seen in other lisps,
 and allow them to be importable, without explicit imports. The goal
 is to keep this as small as we can; we don't want too much magic.

 I've added `take' and `drop' as examples of what we can do.
2013-06-29 18:51:11 -04:00
Nicolas Dandrimont
b65c2a4596 whitespace fix 2013-06-26 08:50:37 +02:00
Guillermo Vaya
7b7b953410 set the value of empty hy expression to [] 2013-06-26 08:50:37 +02:00
Morten Linderud
73c1f218e2 fixed a bug and added tests 2013-06-24 03:26:40 +02:00
Paul Tagliamonte
289586b340 Adding back in keywords.
Yes, I'm your hero, @algernon
2013-06-18 22:57:51 -04:00
Paul Tagliamonte
b00f181e1e Merge branch 'master' into pr/187 2013-06-18 21:17:13 -04:00
Paul Tagliamonte
4aca7842cd Add regression test for UTF and escapes. 2013-06-08 20:17:50 -04:00
Konrad Hinsen
2674016d3d More tests 2013-06-07 16:36:04 +02:00
Konrad Hinsen
6eacf63b53 Provide both eval-and-compile and eval-when-compile 2013-06-07 16:36:04 +02:00
Konrad Hinsen
80105d9731 eval-when-compile permits compile-time definitions that can be used from macros 2013-06-07 16:36:04 +02:00
Konrad Hinsen
12abef5ed5 Forgot boolean constants.. 2013-06-07 16:35:28 +02:00
Konrad Hinsen
e47bac1f96 Permit macros to return constants 2013-06-05 12:19:06 +02:00
Paul Tagliamonte
9c28e0292d Merge branch 'master' into pr/185
Conflicts:
	hy/macros.py
	tests/compilers/test_compiler.py

Hoodoggy!
2013-05-17 11:17:51 -04:00
Konrad Hinsen
269da19d76 Make macros module-specific.
A macro is available in the module where it was defined and
in any module that does a require of the defining module.
Only macros defined in hy.core are globally available.
Fixes #181
2013-05-16 15:34:14 +02:00
Nicolas Dandrimont
f939ae9544 Test quoting dicts 2013-05-14 12:10:29 +02:00
Nicolas Dandrimont
3252af3129 Add tests for expr-in-dict 2013-05-14 12:01:23 +02:00
Nicolas Dandrimont
1e7c90c44e Test requires from native code 2013-05-11 21:25:21 +02:00
Nicolas Dandrimont
bd478590fa Make that test macro more lispy 2013-05-11 21:25:21 +02:00
Nicolas Dandrimont
0bbce2a819 Add a native macros test 2013-05-11 19:40:48 +02:00
Paul Tagliamonte
2426237916 Add the (require) form. 2013-05-10 23:43:34 -04:00
Nicolas Dandrimont
2860ef6ff7 Don't macro-expand inside quotes 2013-05-11 00:29:42 +02:00
Nicolas Dandrimont
68399b9fc3 Make sure splicing works at all times 2013-05-11 00:26:37 +02:00
Nicolas Dandrimont
e039c73abd Add tests for quasiquoting 2013-05-10 23:42:38 +02:00
Paul Tagliamonte
9811b7514e Merge branch 'master' into pr/171 2013-05-09 20:39:49 -04:00
Paul Tagliamonte
1fa53f9255 Try/Except: Ensure that we return properly
From both inside a try and in an exception handler.
2013-05-08 20:41:16 -04:00
Nicolas Dandrimont
488fa89e09 Add some tests for kwapplying expressions 2013-05-09 02:33:14 +02:00
Paul Tagliamonte
98134e7396 Merge branch 'master' into bugfix/paultag/fix-try-except 2013-05-08 20:22:51 -04:00
Paul Tagliamonte
058197a24f Allow returning inside a try / except. Closes #163 2013-05-08 20:00:09 -04:00
Nicolas Dandrimont
4e3f842972 Add &optional arguments.
Python doesn't really have that concept, so make them clash with &key arguments.
2013-05-08 21:11:33 +02:00
Nicolas Dandrimont
5dbf6c6ca9 Add tests for &key arguments in functions 2013-05-08 21:11:33 +02:00
Julien Danjou
ad7e110af4 Implements defclass
This fixes issue #156

Signed-off-by: Julien Danjou <julien@danjou.info>
2013-05-08 12:38:57 +02:00
Nicolas Dandrimont
6935b7b8c1 Add a test for lambda w/ lambda-list 2013-05-07 20:07:15 +02:00
Julien Danjou
8e9a16cc61 Add test case for issue #137
Signed-off-by: Julien Danjou <julien@danjou.info>
2013-05-06 15:48:00 +02:00
Julien Danjou
9d8accb93a compiler: do not optimize Name
The optimization is wrong; they can't have side effects, but they can
raise errors.

Signed-off-by: Julien Danjou <julien@danjou.info>
2013-05-05 20:42:48 +02:00
Nicolas Dandrimont
6b2c635cfa Add some more eval tests 2013-05-05 20:42:48 +02:00
Nicolas Dandrimont
4387b947b3 Add a test for subscript assignment 2013-05-05 20:42:48 +02:00
Nicolas Dandrimont
b7f92bd915 Don't lex "j" as a complex number.
This fixes #143
2013-05-04 10:27:30 +02:00
Julien Danjou
2ef9a0fdaf Rename decorate-with' to with-decorator'
Fixes #158

Signed-off-by: Julien Danjou <julien@danjou.info>
2013-04-28 17:14:22 +02:00
Julien Danjou
08fbd754b6 Update indentation for `if'
Signed-off-by: Julien Danjou <julien@danjou.info>
2013-04-28 17:08:00 +02:00
Julien Danjou
f25177e9a6 Add a `unless' macro
Signed-off-by: Julien Danjou <julien@danjou.info>
2013-04-28 17:04:35 +02:00
Julien Danjou
f68e3b972b Add a `when' macro
Signed-off-by: Julien Danjou <julien@danjou.info>
2013-04-28 17:04:35 +02:00
Julien Danjou
27e74d43b1 Re-indent Hy code using hy-mode
Signed-off-by: Julien Danjou <julien@danjou.info>
2013-04-28 16:31:31 +02:00
John Jacobsen
f69c6243e8 Fix 'direction' of 'drop' function 2013-04-21 15:46:31 -05:00
John Jacobsen
fef571855b Added 'take' and 'drop' functions (as AST elements) 2013-04-21 15:41:20 -05:00
Paul Tagliamonte
6f7f402c19 Merge branch 'master' into pr/140
Conflicts:
	hy/compiler.py
	tests/native_tests/language.hy
2013-04-21 12:29:09 -04:00
Paul Tagliamonte
47b2709c47 Merge branch 'master' into pr/145 2013-04-21 11:04:36 -04:00
Paul Tagliamonte
36a7f91014 Merge branch 'master' into pr/146 2013-04-21 11:03:32 -04:00
Gergely Nagy
494bf0e8ad Remove the import-as and import-from builtins
The new and improved (import) can handle all cases import-as and
import-from did, so drop the latter two from the language. To do this,
the import builtin had to be changed a little: if there's a single
import statement to return, return it as-is, otherwise return a list of
imports.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
2013-04-20 16:06:32 +02:00
Julien Danjou
74ea8fe5e5 Allow fn to have no body
Signed-off-by: Julien Danjou <julien@danjou.info>
2013-04-20 05:19:58 -07:00
Julien Danjou
07860b5ce6 Allow variable without value in `let' declaration
Fixes issue #138

Signed-off-by: Julien Danjou <julien@danjou.info>
2013-04-20 05:18:45 -07:00
James King
1080a457b1 Implemented &key and added tests 2013-04-18 22:27:38 -04:00
Paul R. Tagliamonte
f268403d49 Add another small test on this 2013-04-18 21:46:30 -04:00
Paul R. Tagliamonte
d3a019b3dd Don't quote things in (quote) - Closes #129 2013-04-17 23:20:56 -04:00
Konrad Hinsen
41a9ce28f0 Implement unary minus 2013-04-16 17:43:40 +02:00
Paul R. Tagliamonte
9d913e92af removing the pass 2013-04-14 21:58:44 -04:00
Paul R. Tagliamonte
7b4d4fb371 Merge branch 'jd/finally' of git://github.com/jd/hy into pr-94 2013-04-14 21:57:11 -04:00
Paul R. Tagliamonte
a5a54fc7eb Merge branch 'f/smart-import' of git://github.com/algernon/hy into pr-113 2013-04-14 21:32:22 -04:00
Paul R. Tagliamonte
3b3768853a Merge branch 'jd/remove-pass' of git://github.com/jd/hy into pr-122 2013-04-14 21:09:47 -04:00