Skip to content

Commit 80170be

Browse files
author
Rob Levy
committed
moving clojure-python from google code over to github
0 parents  commit 80170be

File tree

6 files changed

+315
-0
lines changed

6 files changed

+315
-0
lines changed

‎COPYING.LESSER

+165
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,165 @@
1+
GNU LESSER GENERAL PUBLIC LICENSE
2+
Version 3, 29 June 2007
3+
4+
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
5+
Everyone is permitted to copy and distribute verbatim copies
6+
of this license document, but changing it is not allowed.
7+
8+
9+
This version of the GNU Lesser General Public License incorporates
10+
the terms and conditions of version 3 of the GNU General Public
11+
License, supplemented by the additional permissions listed below.
12+
13+
0. Additional Definitions.
14+
15+
As used herein, "this License" refers to version 3 of the GNU Lesser
16+
General Public License, and the "GNU GPL" refers to version 3 of the GNU
17+
General Public License.
18+
19+
"The Library" refers to a covered work governed by this License,
20+
other than an Application or a Combined Work as defined below.
21+
22+
An "Application" is any work that makes use of an interface provided
23+
by the Library, but which is not otherwise based on the Library.
24+
Defining a subclass of a class defined by the Library is deemed a mode
25+
of using an interface provided by the Library.
26+
27+
A "Combined Work" is a work produced by combining or linking an
28+
Application with the Library. The particular version of the Library
29+
with which the Combined Work was made is also called the "Linked
30+
Version".
31+
32+
The "Minimal Corresponding Source" for a Combined Work means the
33+
Corresponding Source for the Combined Work, excluding any source code
34+
for portions of the Combined Work that, considered in isolation, are
35+
based on the Application, and not on the Linked Version.
36+
37+
The "Corresponding Application Code" for a Combined Work means the
38+
object code and/or source code for the Application, including any data
39+
and utility programs needed for reproducing the Combined Work from the
40+
Application, but excluding the System Libraries of the Combined Work.
41+
42+
1. Exception to Section 3 of the GNU GPL.
43+
44+
You may convey a covered work under sections 3 and 4 of this License
45+
without being bound by section 3 of the GNU GPL.
46+
47+
2. Conveying Modified Versions.
48+
49+
If you modify a copy of the Library, and, in your modifications, a
50+
facility refers to a function or data to be supplied by an Application
51+
that uses the facility (other than as an argument passed when the
52+
facility is invoked), then you may convey a copy of the modified
53+
version:
54+
55+
a) under this License, provided that you make a good faith effort to
56+
ensure that, in the event an Application does not supply the
57+
function or data, the facility still operates, and performs
58+
whatever part of its purpose remains meaningful, or
59+
60+
b) under the GNU GPL, with none of the additional permissions of
61+
this License applicable to that copy.
62+
63+
3. Object Code Incorporating Material from Library Header Files.
64+
65+
The object code form of an Application may incorporate material from
66+
a header file that is part of the Library. You may convey such object
67+
code under terms of your choice, provided that, if the incorporated
68+
material is not limited to numerical parameters, data structure
69+
layouts and accessors, or small macros, inline functions and templates
70+
(ten or fewer lines in length), you do both of the following:
71+
72+
a) Give prominent notice with each copy of the object code that the
73+
Library is used in it and that the Library and its use are
74+
covered by this License.
75+
76+
b) Accompany the object code with a copy of the GNU GPL and this license
77+
document.
78+
79+
4. Combined Works.
80+
81+
You may convey a Combined Work under terms of your choice that,
82+
taken together, effectively do not restrict modification of the
83+
portions of the Library contained in the Combined Work and reverse
84+
engineering for debugging such modifications, if you also do each of
85+
the following:
86+
87+
a) Give prominent notice with each copy of the Combined Work that
88+
the Library is used in it and that the Library and its use are
89+
covered by this License.
90+
91+
b) Accompany the Combined Work with a copy of the GNU GPL and this license
92+
document.
93+
94+
c) For a Combined Work that displays copyright notices during
95+
execution, include the copyright notice for the Library among
96+
these notices, as well as a reference directing the user to the
97+
copies of the GNU GPL and this license document.
98+
99+
d) Do one of the following:
100+
101+
0) Convey the Minimal Corresponding Source under the terms of this
102+
License, and the Corresponding Application Code in a form
103+
suitable for, and under terms that permit, the user to
104+
recombine or relink the Application with a modified version of
105+
the Linked Version to produce a modified Combined Work, in the
106+
manner specified by section 6 of the GNU GPL for conveying
107+
Corresponding Source.
108+
109+
1) Use a suitable shared library mechanism for linking with the
110+
Library. A suitable mechanism is one that (a) uses at run time
111+
a copy of the Library already present on the user's computer
112+
system, and (b) will operate properly with a modified version
113+
of the Library that is interface-compatible with the Linked
114+
Version.
115+
116+
e) Provide Installation Information, but only if you would otherwise
117+
be required to provide such information under section 6 of the
118+
GNU GPL, and only to the extent that such information is
119+
necessary to install and execute a modified version of the
120+
Combined Work produced by recombining or relinking the
121+
Application with a modified version of the Linked Version. (If
122+
you use option 4d0, the Installation Information must accompany
123+
the Minimal Corresponding Source and Corresponding Application
124+
Code. If you use option 4d1, you must provide the Installation
125+
Information in the manner specified by section 6 of the GNU GPL
126+
for conveying Corresponding Source.)
127+
128+
5. Combined Libraries.
129+
130+
You may place library facilities that are a work based on the
131+
Library side by side in a single library together with other library
132+
facilities that are not Applications and are not covered by this
133+
License, and convey such a combined library under terms of your
134+
choice, if you do both of the following:
135+
136+
a) Accompany the combined library with a copy of the same work based
137+
on the Library, uncombined with any other library facilities,
138+
conveyed under the terms of this License.
139+
140+
b) Give prominent notice with the combined library that part of it
141+
is a work based on the Library, and explaining where to find the
142+
accompanying uncombined form of the same work.
143+
144+
6. Revised Versions of the GNU Lesser General Public License.
145+
146+
The Free Software Foundation may publish revised and/or new versions
147+
of the GNU Lesser General Public License from time to time. Such new
148+
versions will be similar in spirit to the present version, but may
149+
differ in detail to address new problems or concerns.
150+
151+
Each version is given a distinguishing version number. If the
152+
Library as you received it specifies that a certain numbered version
153+
of the GNU Lesser General Public License "or any later version"
154+
applies to it, you have the option of following the terms and
155+
conditions either of that published version or of any later version
156+
published by the Free Software Foundation. If the Library as you
157+
received it does not specify a version number of the GNU Lesser
158+
General Public License, you may choose any version of the GNU Lesser
159+
General Public License ever published by the Free Software Foundation.
160+
161+
If the Library as you received it specifies that a proxy can decide
162+
whether future versions of the GNU Lesser General Public License shall
163+
apply, that proxy's public statement of acceptance of any version is
164+
permanent authorization for you to choose that version for the
165+
Library.

‎README

+34
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,34 @@
1+
# clojure-python
2+
3+
by Robert P. Levy
4+
5+
Python libraries can be used in clojure by instantiating
6+
a jython interpreter via clojure's excellent java interop
7+
library functions. However, the way in which python code
8+
is wrapped by jython makes interop with python clumsy and
9+
verbose. This library aims to make jython interop in
10+
clojure nearly as seamless as basic java interop.
11+
e
12+
Contents:
13+
14+
src/python.clj ; the library
15+
etc/nltk-example/* ; example using the nltk library
16+
17+
18+
Note: added project.clj to project so as to enable building with Leiningin as a dependency via Clojars.
19+
However please note that the included nltk examples will probably require features in Jython 2.5.1,
20+
the latest version of Jython in mvnrepository is 2.5.0 at the time of this writing.
21+
22+
## Usage
23+
24+
FIXME: write
25+
26+
## Installation
27+
28+
FIXME: write
29+
30+
## License
31+
32+
Copyright (C) 2010 FIXME
33+
34+
Distributed under LGPL.

‎project.clj

+6
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,6 @@
1+
(defproject clojure-python "0.0.1"
2+
:description "Improve seamlessness of Clojure Jython interop."
3+
:dependencies [[org.clojure/clojure "1.1.0"]
4+
[org.python/jython "2.5.0"]]
5+
:dev-dependencies [[lein-clojars "0.5.0"]]
6+
:main clojure-python.core)

‎src/clojure_python/core.clj

+103
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,103 @@
1+
(ns clojure-python.core
2+
(:use (clojure.core.*))
3+
(:import (org.python.util PythonInterpreter)
4+
(org.python.core.*)))
5+
6+
; instantiate a python interpreter in the python namespace
7+
(def *interp* (new org.python.util.PythonInterpreter))
8+
9+
(defn init
10+
"this may later take keywords and initialize other things
11+
for now it is just used to specify python library paths"
12+
([libpath]
13+
(doto clojure-python.core/*interp*
14+
(.exec "import sys")
15+
(.exec (str "sys.path.append('" libpath "')"))))
16+
([libpath & more]
17+
(init libpath)
18+
(apply init more)))
19+
20+
(defmacro py-import
21+
"define a library using the same name it has in python
22+
if multiple arguments are given, the first is assumed
23+
to be a library that has been imported,
24+
and the others are objects to import from this library"
25+
([] nil)
26+
([lib] ; import a library
27+
`(do (. clojure-python.core/*interp* exec (str "import " ~(name lib)))
28+
(def ~lib (. (. (. clojure-python.core/*interp* getLocals)
29+
__getitem__ ~(name lib))
30+
__dict__))
31+
(print ~lib)))
32+
([lib object] ; import object from a library
33+
`(do (def ~object (.__finditem__
34+
~lib
35+
~(name object)))
36+
(print ~object)))
37+
([lib object & more-objects] ; import multiple objects
38+
`(do (py-import ~lib ~object)
39+
(py-import ~lib ~@more-objects))))
40+
41+
(defmacro import-fn
42+
"this is like import but it defines the imported item
43+
as a native function that applies the python wrapper calls"
44+
([lib fun]
45+
`(def ~fun (py-fn ~lib ~fun)))
46+
([lib fun & more-funs]
47+
`(do (import-fn ~lib ~fun)
48+
(import-fn ~lib ~@more-funs))))
49+
50+
(defmacro py-fn [lib fun]
51+
"create a native clojure function applying the python
52+
wrapper calls on a python function at the top level of the library
53+
use this where lambda is preferred over named function"
54+
`(let [f# (.__finditem__
55+
~lib
56+
~(name fun))]
57+
(fn [& args#]
58+
(call f# args#))))
59+
60+
(defmacro __
61+
"access attribute of class or attribute of attribute of (and so on) class"
62+
([class attr]
63+
`(.__findattr__ ~class ~(name attr)))
64+
([class attr & more]
65+
`(__ (__ ~class ~attr) ~@more)))
66+
67+
(defmacro _>
68+
"call attribute as a method
69+
basic usage: (_> [class attrs ...] args ...)
70+
usage with keyword args: (_> [class attrs ...] args ... :key arg :key arg)
71+
keyword args must come after any non-keyword args"
72+
([[class & attrs] & args]
73+
(let [keywords (map name (filter keyword? args))
74+
non-keywords (filter (fn [a] (not (keyword? a))) args)]
75+
`(call (__ ~class ~@attrs) [~@non-keywords] ~@keywords))))
76+
77+
(defn dir [x]
78+
"it's slightly nicer to call the dir method in this way"
79+
(seq (.__dir__ x)))
80+
81+
(defn iter [o start end]
82+
"Jython sometimes represents things as 'PyObjectDerived', which has no direct method to get their items as a seq"
83+
(for [i (range start end)]
84+
(.__getitem__ o i)))
85+
86+
(defn java2py [args]
87+
"to wrap java objects for input as jython, and unwrap jython output as java
88+
(thanks to Marc Downie on Clojure list for suggesting this)"
89+
(into-array
90+
org.python.core.PyObject
91+
(map
92+
(fn [n] (. org.python.core.Py java2py n))
93+
args)))
94+
95+
(defn call [fun args & key-args]
96+
"The first len(args)-len(keywords) members of args[]
97+
are plain arguments. The last len(keywords) arguments
98+
are the values of the keyword arguments."
99+
(.__tojava__
100+
(if key-args
101+
(.__call__ fun (java2py args) (into-array java.lang.String key-args))
102+
(.__call__ fun (java2py args)))
103+
Object))

‎src/clojure_python/core.clj~

+1
Original file line numberDiff line numberDiff line change
@@ -0,0 +1 @@
1+
(ns clojure-python.core)

‎test/clojure_python/core_test.clj

+6
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,6 @@
1+
(ns clojure-python.core-test
2+
(:use [clojure-python.core] :reload-all)
3+
(:use [clojure.test]))
4+
5+
(deftest replace-me ;; FIXME: write
6+
(is false "No tests have been written."))

0 commit comments

Comments
 (0)