Commit Graph

434 Commits

Author SHA1 Message Date
Zack M. Davis
d8abfb3653 merge branch 'additional_unpacking_correctness' 2015-07-22 21:26:38 -07:00
Gergely Nagy
adc1cf8829
contrib.walk: Coerce non-list iterables into list form
Expressions can sometimes contain itertools.islice objects, which we can
only walk if we force them into a list. To do this, the walk function
has to be taught that collections that are not instances of list should
be forced into a list.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
2015-07-15 16:59:49 +02:00
Ryan Gonzalez
c94c0e8b50 Add set literals (closes #827) 2015-07-14 23:59:29 +03:00
Gregor Best
509b72a799 Make (defmain ...) a clean macro 2015-06-15 21:11:48 +02:00
Gregor Best
dcd23cf494 Add tests for eval with explicit global dict 2015-05-23 13:50:17 +02:00
Zack M. Davis
fb98bf58c4 *args and **kwargs no longer have own args in Python 3.5
Python 3.5's PEP 448 ("Additional Unpacking Generalizations") allows the
iterable- and dictionary- unpacking operators to be used more than once;
the implementation (see https://hg.python.org/cpython/rev/a65f685ba8c0)
gets rid of the optional `starargs` and `kwargs` arguments to `ast.Call`
and `ast.ClassDef`, instead using `ast.Starred` and `ast.keyword`
objects inside of the normal `args` and `keywords` lists,
respectively. This commit allows Hy's `apply` to work correctly with
this revised AST when running under Python 3.5.
2015-05-19 20:08:16 -07:00
Paul Tagliamonte
42983d173f Merge branch 'master' into pr/796 2015-04-30 11:14:54 -04:00
Berker Peksag
5f1776fe06 Merge pull request #793 from kirbyfan64/destruct-args
Add argument destructuring
2015-04-30 14:01:47 +03:00
Berker Peksag
d11014d115 Merge pull request #777 from tianon/compare-shadows
Add shadow functions for comparison operators
2015-04-30 13:58:32 +03:00
Zack M. Davis
2ad2d5a418 fix keyword lambda values by retaining statements in Result
As reported in issue #748, there was a bug in which passing a lambda
as the value of a :keyword argument would fail—

$ hy --spy
hy 0.10.1 using CPython(default) 3.4.0 on Linux
=> (sorted (range 10) :key (fn [x] (- x)))
from hy.core.language import range
sorted(range(10), key=_hy_anon_fn_1)
Traceback (most recent call last):
  File "<input>", line 1, in <module>
NameError: name '_hy_anon_fn_1' is not defined

The function call would appear in the generated AST without being
preceded by the appropriate function definition corresponding to the
anonymous function argument value in the Hy source, causing either a
NameError (as in the example above), or erroneous reuse of whatever
function was already pointed to by the `_hy_anon_fn_` name referenced
in the list of keywords passed to `ast.Call`.

This commit aims to fix the problem by handling it in same way that
the expression/statement gap is bridged many other places in the
compiler, by adding the compiled value of the keyword argument to the
Result object being built during `_compile_collect`, with the
understanding that any Python statements implied by the argument value
will be appropriately preserved therein.
2015-04-26 15:57:08 -07:00
nicolas-p
3d667c179c Tests for ap-pipe and ap-compose
Added tests for the ap-pipe and ap-compose anaphoric macros.
2015-04-26 18:19:01 +02:00
Tianon Gravi
ff1c4ccdb3 Add shadow functions for comparison operators 2015-04-24 12:19:23 -06:00
Ryan Gonzalez
4ead84b058 Add argument destructuring 2015-04-18 12:32:03 -05:00
Zack M. Davis
0dbf2126cf adds support for Python 3.5 infix matrix multiplication
Python 3.5 will have a new commercial-at infix operator with the magic
methods __matmul__, __rmatmul__, and __imatmul__, unused as yet in the
standard library, but intended to represent matrix multiplication in
numerical code; see PEP 465 (https://www.python.org/dev/peps/pep-0465/)
for details. This commit (developed against Python 3.5 alpha 3) brings
support for this operator to Hy when running under Python 3.5 (or,
hypothetically as yet, greater). For Hy under Python <= 3.4, attempting
to use `@` in function-call position currently results in a NameError;
this commit does not change that behavior.

This is intended to resolve #668.
2015-04-12 21:45:39 -07:00
Antony Woods
d1ed8f49d3 Re-implemented last function so that it also supports iterators. Added a test to reflect this. 2015-04-07 10:30:52 +01:00
Antony Woods
cbd942fd02 Added (last) function to core language 2015-03-18 15:23:43 +00:00
Zhao Shenyang
dafcc7ec70 add symbol? function to hy.core
`symbol?` will test if the input is an instance of HySymbol. It's useful when writing macros.
2015-01-29 23:17:52 +08:00
Matthías Páll Gissurarson
1d5b455491 Added a fix for nested decorators. Fixes #752 2015-01-14 19:42:02 +00:00
Christopher Allan Webber
d98e4fd733 Implement keyword argument passing... (foo-func 1 2 :kw1 "bar") works!
This code is heavily, *heavily* based off of Guillermo Vaya
(willyfrog)'s work... instead of defining its own keyword arg though, it
uses the "standard" :kwarg type, which is the main difference from
willyfrog's original branch.

Included tests and some documentation in the tutorial.

Also documented "apply" separately as an example of reproducing
*args and **kwargs.
2014-12-23 14:07:02 -06:00
Gergely Nagy
6b3c552df4 Better error messages for fn/defn w/o arglists
When (fn) or (defn) does not get an arglist as first/second parameter,
emit a more descriptive error message, rather than an ugly traceback.

Fixes #716.

Reported-by: Joakim Tall
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
2014-12-12 13:28:28 +01:00
Paul Tagliamonte
0dfa9123a2 Merge branch 'master' into pr/705 2014-12-07 14:21:06 -05:00
Bob Tolbert
ffd85bcc3e Fixes a long-standing bug in import under Python 3.3 and later.
Our MetaImporter was being inserted at the end of sys.meta_path.
For Python prior to 3.3, this was fine since sys.meta_path
was empty by default. As of the completion of PEP 302 in Py3.3 and
later, there are several importers registered by default. One of
these was trying (and failing) to import simple Hy modules,
resulting in a failure to import anything inside __init__.hy.

This change simply inserts the Hy-specific importer at the front
of the list.

This was noted in issue #620 (great catch @algernon)
2014-12-07 11:02:48 -07:00
Nathan Woodrow
41806895b2 Add macro expansion in defclass 2014-12-07 11:52:09 +10:00
Christopher Allan Webber
917ba9fce5 Test to ensure exception handling in yield-from works right 2014-11-20 20:48:15 -06:00
Christopher Allan Webber
86d8f69ef7 Fix yield-from test indentation
Indentation was inconsistent with our usual indentation style.
2014-11-20 20:48:15 -06:00
Paul Tagliamonte
602f392fe7 Implement yield-from in Python 2.x as a macro
And who said you can't teach an old dog new tricks.

  ... but at the same time, drop Python 3.2 for not knowing this new
  trick.
2014-11-20 20:48:15 -06:00
Paul Tagliamonte
b92c19c73c Merge branch 'master' into pr/579 2014-11-15 08:02:41 -05:00
Paul Tagliamonte
ec593154fe Merge branch 'master' into pr/637
Conflicts:
	hy/core/language.hy
2014-11-15 07:58:56 -05:00
Paul Tagliamonte
6d25237093 Merge branch 'master' into pr/658 2014-11-15 07:54:24 -05:00
Paul Tagliamonte
dcf29d3d2a Fix the test decorator to return the class. 2014-11-15 07:47:55 -05:00
Ryan Gonzalez
c7e4d4cd6e Add tests 2014-11-14 14:21:16 -06:00
Tianon Gravi
96410f506e Add a dedicated lisp-if-not / lif-not macro
This is in parallel to `if` / `if-not` (so not without precedent). :)
2014-11-06 12:44:15 -07:00
Abhishek Lekshmanan
1b6c765e97 Merge branch master onto #525
Conflicts:
	hy/core/language.hy
	tests/native_tests/language.hy
2014-10-09 21:28:33 +05:30
bismigalis
76d7e3479a Added merge-with 2014-10-02 18:50:04 +04:00
Gergely Nagy
3f01ed5014 Add a Botsbuildbots function
A tribute to Portal 2, this function will return an infinite list of the
contents of the AUTHORS file on GitHub master (assuming requests is
installed). Except, the macro does this, the function never gets called,
it is purely there for tribute reasons.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
2014-09-05 12:37:51 +02:00
han semaj
99db02668b Fix 'some' (first logical true value or nil) 2014-09-04 21:29:38 +12:00
Foxboron
66e3cdcb99 Rename slots to attribute/attr 2014-09-04 00:06:52 +02:00
Morten Linderud
bc0ef3ea14 Merge pull request #641 from microamp/issue-638
Fix #638: Make nth return default value when out of bounds
2014-09-03 14:28:01 +02:00
han semaj
c8985a898b Shadow '+' to handle string/list concatenation 2014-08-26 21:38:52 +12:00
han semaj
ecc664337d Make nth return default value when out of bounds 2014-08-23 23:35:31 +12:00
han semaj
23f31d4ac1 Reimplement butlast in terms of drop-last 2014-08-22 21:51:12 +12:00
han semaj
7f5c8e39d8 Implement drop-last 2014-08-22 21:09:59 +12:00
Nicolas Dandrimont
aafb16d69f Merge branch 'master' into pr/584 2014-08-18 18:18:25 +02:00
Paul Tagliamonte
37fc9e08d0 Merge branch 'master' into pr/635 2014-08-18 12:10:08 -04:00
han semaj
3f1a24bfe3 Implement interleave and interpose 2014-08-17 14:53:57 +12:00
Foxboron
c8adf9b726 Renamed stdin -> from-file and removed apply from tests + docs 2014-08-14 18:18:05 +02:00
Foxboron
f7675c829e Added read and tests 2014-08-12 18:37:46 +02:00
Bob Tolbert
16e908d56e In order to fix #608, we need to know which symbols can't be assigned.
Python has the keyword.iskeyword method we can leverage for Python
keywords, but we also need to address Hy builtins like 'get' or
'slice'.

And to make behavior compatible with Python 2 or 3, we also make
a special case to prevent assignment to False, True or None as
well as the Hy versions: false, true, null, and nil.

For non-Hy modules, we also check to make sure the symbol is not
part of the compiler. This allows shadow.hy to override "+" but
prevents general use from re-defn-ing 'get' or 'do'.
2014-06-30 21:09:59 -06:00
Tuukka Turto
f3ecb96119 Merge branch 'master' into pr/593 2014-06-24 23:23:48 +03:00
Bob Tolbert
483c6b2576 Merge pull request #602 from agentultra/shadow-builtins
Add shadow.hy to core
2014-06-24 08:57:50 -06:00
J Kenneth King
7f350cdc62 Merge pull request #601 from theanalyst/fix/ap-first
anaphoric: fix first & last when predicates fail
2014-06-23 15:32:29 -04:00
Bob Tolbert
ea5eba5916 Second part of the fix for yield inside a try-finally
As noted in #600, Python 3 allows a return inside a generator
method, that raises a StopIteration and passes the return value
inside the 'value' attr of the exception.

To allow this behaviour we simple set 'contains_yield' while compiling
'yield', thus allowing a return statement, but only for Python 3. Then
when compiling the try-except, we check for contains_yield to decide
whether there will be a return.

This allows code like:

(defn gen []
  (yield 3)
  "goodbye")

to compile in both Py2 and Py3. The return value is simply ignored in
Python 2.

hy2py in Python 2 gives:

def g():
    yield 3L
    u'goodbye'

while hy2py in Python 3 gives:

def g():
    yield 3
    return 'goodbye'

Turns out return in yield started in Python 3.3
2014-06-22 14:59:29 -06:00
Allison Kaptur
b56a03750f revert yield-from test
Yield-from was introduced in 3.3, so we have to catch the compile error that's raise in 3.2. :(
2014-06-09 16:33:32 -04:00
James King
277028cdd5 Remove HyLambdaListKeyword from the parser
It's not a syntactic element and doesn't belong in the parser. Parsing
lambda lists is now handled by the compiler alone.
2014-06-03 21:36:49 -04:00
James King
8e173937c3 Add shadow.hy to core
This new core module allows us to shadow the builtin Python operators so
they may be passed to sequence functions that expect functions:

    => (map / [1 2 3 4 5])
    [1.0, 0.5, 0.3333333333333333, 0.25]
2014-05-26 21:50:47 -04:00
Abhishek L
c2982a9ae3 anaphoric: fix first & last when conditions fail
* hy/contrib/anaphoric.hy: `ap-first` and `ap-last` now handle cases
  when failure happens for the predicate. Thanks to @tutorto for
  reporting this bug
2014-05-24 17:48:46 +05:30
John MacKenzie
15ad6cb998 defmacro/g! and HyObject#startswith
Currently, defmacro/g! doesn't respond well when it comes across a
HyObject that doesn't respond to the instance method startswith (e.g.
HyInteger, HyFloat, etc.). This updates defmacro/g! to be a little
safer when searching for the gensyms it needs to create.
2014-05-15 01:51:38 +00:00
Tuukka Turto
726d1735db Merge branch 'master' into pr/571
Conflicts:
	AUTHORS
	tests/native_tests/core.hy
2014-05-13 09:32:51 +03:00
Paul Tagliamonte
2b08674c88 Merge branch 'master' into pr/522 2014-05-12 22:10:09 -04:00
Paul Tagliamonte
1ae666e096 Merge branch 'master' into pr/565 2014-05-12 20:43:09 -04:00
Paul Tagliamonte
ca0271df95 Merge branch 'master' into pr/574
Conflicts:
	AUTHORS
2014-05-12 20:15:51 -04:00
Paul Tagliamonte
1696ddecac Merge branch 'master' into pr/578 2014-05-12 20:14:37 -04:00
Christian Weilbach
01ee54cf62 Merge https://github.com/hylang/hy
Fix butlast and test for disassemble.

Conflicts:
	hy/core/language.hy
2014-05-03 16:33:39 +02:00
Allison Kaptur
caa53fb095 Tests for explicit exception chaining
This also breaks out the PY3 only tests into their own file.  We need to do this because raise from is a syntax error in PY2, so we can't rely on the previous hack of catching a HyCompileError - it would compile fine through Hy and then be a syntax error in Python.
2014-05-01 16:33:10 -04:00
Matthew Wampler-Doty
5b4c431b81 Enforcing dynamic scope behavior in let 2014-04-30 10:38:49 -05:00
Matthew Wampler-Doty
914a18f5b0 Moving math.hy so it doesn't clash with library math module; band aid around issue #583 (PEP 328 non-compliance) 2014-04-30 10:38:07 -05:00
Matthew Wampler-Doty
7b5cb390ab setv no longer creates variables with '.' in their names
FIXES #577
2014-04-29 09:22:55 -05:00
pyos
8e4b21103c Reimplement some built-ins in terms of the standard library.
As a result:

  * functions such as `nth` should work correctly on iterators;
  * `nth` will raise `IndexError` (in a fashion consistent with `get`)
    when the index is out of bounds;
  * `take`, etc. will raise `ValueError` instead of returning
    an ambiguous value if the index is negative;
  * `map`, `zip`, `range`, `input`, `filter` work the same way (Py3k one)
    on both Python 2 and 3 (see #523 and #331).
2014-04-29 18:03:43 +04:00
Tuukka Turto
bdd8e3c82e merge #547 - keyword? 2014-04-28 21:59:33 +03:00
Allison Kaptur
3f9ae9122e Raise exceptions when no handlers are provided.
Also small DRYing in try handling.

Previously, writing a bare (try (foo)) would invoke Pokemon
exception catching (gotta catch 'em all) instead of the correct
behavior, which is to raise the exception if no handler is provided.

Note that this is a cute feature of Hy, as a `try` with no `except`
is a syntax error.  We avoid the syntax error here because we don't
use Python's compiler, which is the only thing that can throw
Syntax Errors.  :D

Fixes #555.
2014-04-28 03:08:30 +03:00
Matthew Wampler-Doty
5c9a8f8975 Closes #573, restores 0.9.12 for loop behavior (and everyone wins!) 2014-04-22 08:57:18 -07:00
Matthew Wampler-Doty
834b0019a7 Fixing doto to be API compatible with Clojure's doto 2014-04-21 12:35:56 -07:00
Tuukka Turto
8a5a1eea27 test for doto macro
relates #567
2014-04-21 13:21:11 +03:00
maresp
0195de6545 fixed ap-map potential naming conflict 2014-04-18 02:45:05 +02:00
Paul Tagliamonte
217f3ad65f Merge branch 'master' into pr/515 2014-04-10 22:52:41 -04:00
Christopher Allan Webber
d5194f23fa Properly add yield-from, using python's real "yield from".
The yield-from that existed previously wasn't actually implementing the
full complexity of "yield from":

  http://legacy.python.org/dev/peps/pep-0380/#formal-semantics

... this includes passing along errors, and many other things.

Also removes the yield-from backport macro, since it does not seem
possible at present to conditionally build macros.

Thus, there is no longer yield-from on pre-python-3.3 systems.

Includes updated docs and tests to reflect all this.
2014-04-10 14:07:49 -05:00
Christopher Allan Webber
f3d978c5a3 Added lisp-if (or lif), with tests and documentation.
Now everyone can get along and everyone can have a pony, and that pony is
actually a unicorn that shoots rainbows from its horn.
2014-04-10 13:51:28 -05:00
Berker Peksag
3528cc8278 Kill kwapply.
Closes #433.
2014-04-09 20:10:31 +03:00
Paul Tagliamonte
3a9cf486db Add a keyword? function to detect keywords.
Thanks to algernon for the function body; huge improvement.
2014-04-02 22:22:23 -04:00
Paul Tagliamonte
54da3f08dd Add Curry module. 2014-03-29 14:40:13 -04:00
schuster-rainer
7fe997e9f7 Added name and keyword functions to core 2014-03-01 00:23:49 +01:00
Berker Peksag
6829d6fb3a Tweak the zipwith doc a bit and add @kirbyfan64 to AUTHORS. 2014-02-22 02:21:34 +02:00
kirbyfan64
d282d65cde Add zipwith 2014-02-22 02:14:27 +02:00
James King
b97e0258e1 Fix for #497
One would expect the form:

    > (defmacro a (&rest b) b)
    > (a 1 2)

To return a tuple object but we have no Hy model so it returns a HyList.
Not sure if this is the right thing to do.
2014-02-19 00:09:37 -05:00
Paul Tagliamonte
e219973853 Fix up quoting keywords.
Fixes this:

=> :foo
'\ufdd0:foo'
=> `:foo
'\ufdd0\ufdd0:foo'
2014-02-17 18:00:31 -05:00
Paul Tagliamonte
2f751df0f6 Merge branch 'master' into pr/489 2014-02-15 11:49:12 -05:00
han semaj
24a1567b00 Implement every? and some 2014-02-11 21:42:56 +13:00
Foxboron
66366b5bc9 Added defmulti 2014-02-05 16:07:48 +01:00
Gergely Nagy
e8dfe5bfb2
hy.contrib.walk: Add support for walking cons cells
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
2014-02-01 18:36:57 +01:00
Gergely Nagy
fa24042cb0 hy.contrib.walk: Add (macroexpand-all)
This function will recursively perform all possible macroexpansions in
the supplied form. Unfortunately, it also traverses into quasiquoted
parts, where it shouldn't, but it is a useful estimation of macro
expansion anyway.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
2014-02-01 18:34:12 +01:00
Gergely Nagy
817b4688d8 hy.contrib.walk: New contrib module for walking the Hy AST
The hy.contrib.walk module provides a few functions to walk the Hy AST,
and potentially transform it along the way. The main entry point
is (walk), which takes two functions and a form as arguments, and
applies the first (inner) function to each element of the form, building
up a data structure of the same type as the original. Then applies outer
(the second function) to the result.

Two convenience functions are provided: (postwalk) and (prewalk), which
do a depth-first, post/pre-order traversal of the form.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
2014-02-01 18:34:12 +01:00
Abhishek L
4b54e3c748 Merge master onto pr/471
Conflicts:
	hy/core/language.hy
2014-01-30 21:50:23 +05:30
James King
cbb8cc1d37 Add integer-char? to core 2014-01-28 17:28:41 -05:00
Nicolas Dandrimont
52144820ca Add a cons object and related mechanisms
Closes: #183
2014-01-23 23:08:52 +01:00
Nicolas Dandrimont
fad67bd8f5 Merge branch 'master' into pr/468 2014-01-23 22:14:23 +01:00
Nicolas Dandrimont
b99af411c8 Merge branch 'master' into pr/461
Conflicts:
	tests/native_tests/native_macros.hy
2014-01-23 21:57:17 +01:00
Abhishek L
10f1f24a18 Adding a simple `identity' function
* hy/core/language.hy: Adding a simple `identity` function that returns
  the argument supplied to it

* docs/language/core.rst: Updated docs with identity function
2014-01-22 00:56:28 +05:30
Gergely Nagy
e90b24b73a
hy/core/macros.hy: Add an (if-not) macro
Sometimes it is better to start with the false condition, sometimes that
makes the code clearer. For that, the (if-not) macro, which simply
reverses the order of the condition blocks, can be of great use.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
2014-01-18 22:56:20 +01:00
Gergely Nagy
21709f0199 hy/core/macros.hy: Add defn-alias / defun-alias
In the same vein as defmacro-alias, this implements defn-alias /
defun-alias, which does essentially the same thing as defmacro-alias,
but for functions.

Signed-off-by: Gergely Nagy <algernon@balabit.hu>
2014-01-18 16:09:35 +01:00
Nicolas Dandrimont
3286271cb8 Merge branch 'master' into pr/454 2014-01-17 20:32:50 +01:00
Berker Peksag
db9b9c6876 Move all contrib.meth tests to tests/native_tests/contrib/. 2014-01-17 03:56:12 +02:00
Foxboron
a35ecc41bd Fix reader macros to actually be macros 2014-01-17 01:07:47 +01:00
Nicolas Dandrimont
8bfa4f33fc Add set comprehensions, dict comprehensions and generator expressions
Closes: #14 (woo, two-digit tickets)
2014-01-16 00:49:48 +01:00
Clinton N. Dreisbach
47d67b0062 Added loop/recur macro for tail-call optimization 2014-01-12 14:02:27 -05:00
Abhishek L
f159f1499b Adding a simple coll? function to the core
* hy/core/language.hy:
  -Added a simple coll? function that checks whether the given argument
  is an iterable and not a string,
  - Also replaced the check in `flatten` by coll?

* tests/native_tests/core.hy: Tests updated for checking coll?
2014-01-12 15:49:09 +05:30
Paul Tagliamonte
110476901c Fix a few typos in the tests. Thanks again, @olasd 2014-01-10 22:31:00 -05:00
Paul Tagliamonte
0f74b1ddf3 Add handling for (for []). Nice catch, @olasd. 2014-01-10 22:29:20 -05:00
Paul Tagliamonte
abd0669911 add test for new for logic. 2014-01-10 22:16:35 -05:00
Nicolas Dandrimont
78f6301e27 Add tests for the attribute access DSL 2014-01-09 03:35:32 +01:00
Nicolas Dandrimont
d3fa1fd1a8 Add disassemble function to hy.core.language
This function dumps the AST or the python code generated by evaluating a quoted expression to stdout.

Fixes #58
2014-01-04 03:47:04 +01:00
Nicolas Dandrimont
2f7d40b409 Factor the calling-module-name function 2014-01-03 21:41:14 +01:00
Nicolas Dandrimont
74739bc43e Whitespace fix 2014-01-02 00:52:29 +01:00
Nicolas Dandrimont
88451bbeaa Merge branch 'better-macroexpand' of https://github.com/sbp/hy into sbp-better-macroexpand
Conflicts:
	hy/core/language.hy
	tests/native_tests/language.hy
2014-01-02 00:49:40 +01:00
Bob Tolbert
032200bcb4 Some small doc fixes
This cleans up a number of doc warnings, including a bad
underline for zero?

While there, added a nil? function to match up with the
new nil is None.

Also un-hid myself from coreteam.
2013-12-31 16:14:05 -07:00
Paul Tagliamonte
eeef65b505 Change the signature of (for) and (with).
(for) is restored to clojure-like flatness.
 (with) can be used without the nested list if you don't care about the
        name.

   Tests and examples updated.
2013-12-31 13:35:31 -05:00
Paul Tagliamonte
e754a58237 Merge branch 'master' into pr/363 2013-12-31 11:41:30 -05:00
Abhishek L
0a80b87b7f Merge branch 'master' onto pr/395 2013-12-31 03:37:26 +05:30
Gergely Nagy
62522a5f86 Allow get with multiple arguments
When calling get with more than two arguments, treat the rest as indexes
into the expression from the former. That is, (get foo "bar" "baz")
would translate to foo["bar"]["baz"], and so on.

This fixes #362.

Requested-by: Sean B. Palmer <sean@miscoranda.com>
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
2013-12-30 12:04:40 +01:00
Foxboron
d82636958b added for and with macros
Fixed up anaphoric.hy and added the tests too native_tests/__init__.py

added __init__.hy
2013-12-29 16:50:21 +01:00
Bob Tolbert
55a7ab1667 add nil as synonym for None 2013-12-27 13:50:19 -07:00
Bob Tolbert
b2bb161cb0 Merge pull request #391 from olasd/bugfix/apply-method-call
Fix apply with method calls
2013-12-27 11:46:59 -08:00
Paul Tagliamonte
1dc26148c6 Merge branch 'master' into paultag/ana/if
Conflicts:
	hy/contrib/anaphoric.hy
2013-12-26 17:57:29 -05:00
Abhishek L
c69c14cc7d contrib/anaphoric: More anaphoric macros added
* hy/contrib/anaphoric.hy: The following anaphoric macros have been
  added
  `ap-reject` : Opposite of ap-filter, yields the elements when a `pred`
  evaluates to false
  `ap-dotimes` : Execute body forms (possibly for side-effects) n times
  with `it` bound from 0 to n-1
  `ap-first` : return the first element that passes predicate
  `ap-last`  : return the last element that passes predicate
  `ap-reduce`: anaphoric form of reduce that allows `acc` and `it` to
  create a function that is applied over the list

* docs/contrib/anaphoric.rst: updated docs to reflect these changes

* tests/__init__.py: updated to explicitly include tests for anaphoric
  macros
2013-12-26 05:57:06 +02:00
Paul Tagliamonte
6172b60e75 Add anaphoric if statement 2013-12-25 12:14:26 -05:00
Nicolas Dandrimont
cfbc792957 Fix apply with method calls
Apply didn't work on method calls (i.e. `(apply .foo [bar]) broke).
This slipped through because there were no tests of this behavior. I noticed
it while trying to merge the `meth` fixes.
2013-12-23 21:02:45 +01:00
Foxboron
c9fdd40c9f Hy reader macros #377
Added first iteration of reader macros
Refactored defmacro and defreader
Added test inn hy/tests/lex/test_lex.py
Added new test in hy/tests/native/tests
Added new test in hy/tests/macros.

changed the error given in the dispatch macro and added some handling for missing symbol and invalid characters
2013-12-23 14:33:51 +01:00
Nicolas Dandrimont
1a701d4dc4 Whitespace fix 2013-12-22 20:04:12 +01:00
Nicolas Dandrimont
ec2b5fb7ad Merge branch 'kwapply-macro' of https://github.com/Willyfrog/hy into Willyfrog-kwapply-macro
Conflicts:
	hy/core/language.hy
	hy/core/macros.hy
	tests/native_tests/language.hy
2013-12-22 20:03:00 +01:00
Nicolas Dandrimont
ceb612f385 Merge branch 'fix/arith-identity' of https://github.com/theanalyst/hy into theanalyst-fix/arith-identity 2013-12-22 19:32:10 +01:00
Nicolas Dandrimont
799c39ffad Implement del
Closes #385.
2013-12-22 20:26:57 +02:00
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