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authorLarry Hastings <larry@hastings.org>2014-01-07 20:41:53 (GMT)
committerLarry Hastings <larry@hastings.org>2014-01-07 20:41:53 (GMT)
commit61272b77b0792318105bbdb6887a029b6a1743da (patch)
treec7842926f7938056074e083347c03ebb244650cf /Doc/howto
parent9026113fd4acbb2fb77a900ae7bd921eebcc29c4 (diff)
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Issue #19273: The marker comments Argument Clinic uses have been changed
to improve readability.
Diffstat (limited to 'Doc/howto')
-rw-r--r--Doc/howto/clinic.rst126
1 files changed, 63 insertions, 63 deletions
diff --git a/Doc/howto/clinic.rst b/Doc/howto/clinic.rst
index a22a11f..555fa68 100644
--- a/Doc/howto/clinic.rst
+++ b/Doc/howto/clinic.rst
@@ -35,12 +35,12 @@ If you run that script, specifying a C file as an argument::
Argument Clinic will scan over the file looking for lines that
look exactly like this::
- /*[clinic]
+ /*[clinic input]
When it finds one, it reads everything up to a line that looks
-like this::
+exactly like this::
- [clinic]*/
+ [clinic start generated code]*/
Everything in between these two lines is input for Argument Clinic.
All of these lines, including the beginning and ending comment
@@ -51,11 +51,11 @@ generates output. This output is rewritten into the C file
immediately after the block, followed by a comment containing a checksum.
The Argument Clinic block now looks like this::
- /*[clinic]
+ /*[clinic input]
... clinic input goes here ...
- [clinic]*/
+ [clinic start generated code]*/
... clinic output goes here ...
- /*[clinic checksum:...]*/
+ /*[clinic end generated code: checksum=...]*/
If you run Argument Clinic on the same file a second time, Argument Clinic
will discard the old output and write out the new output with a fresh checksum
@@ -68,9 +68,9 @@ the next time Argument Clinic writes out fresh output.)
For the sake of clarity, here's the terminology we'll use with Argument Clinic:
-* The first line of the comment (``/*[clinic]``) is the *start line*.
-* The last line of the initial comment (``[clinic]*/``) is the *end line*.
-* The last line (``/*[clinic checksum:...]*/``) is the *checksum line*.
+* The first line of the comment (``/*[clinic input]``) is the *start line*.
+* The last line of the initial comment (``[clinic start generated code]*/``) is the *end line*.
+* The last line (``/*[clinic end generated code: checksum=...]*/``) is the *checksum line*.
* In between the start line and the end line is the *input*.
* In between the end line and the checksum line is the *output*.
* All the text collectively, from the start line to the checksum line inclusively,
@@ -111,8 +111,8 @@ convert a function to work with it. Let's dive in!
3. Add the following boilerplate above the function, creating our block::
- /*[clinic]
- [clinic]*/
+ /*[clinic input]
+ [clinic start generated code]*/
4. Cut the docstring and paste it in between the ``[clinic]`` lines,
removing all the junk that makes it a properly quoted C string.
@@ -122,9 +122,9 @@ convert a function to work with it. Let's dive in!
Sample::
- /*[clinic]
+ /*[clinic input]
Write a pickled representation of obj to the open file.
- [clinic]*/
+ [clinic start generated code]*/
5. If your docstring doesn't have a "summary" line, Argument Clinic will
complain. So let's make sure it has one. The "summary" line should
@@ -143,11 +143,11 @@ convert a function to work with it. Let's dive in!
Sample::
- /*[clinic]
+ /*[clinic input]
pickle.Pickler.dump
Write a pickled representation of obj to the open file.
- [clinic]*/
+ [clinic start generated code]*/
7. If this is the first time that module or class has been used with Argument
Clinic in this C file,
@@ -159,16 +159,16 @@ convert a function to work with it. Let's dive in!
Sample::
- /*[clinic]
+ /*[clinic input]
module pickle
class pickle.Pickler
- [clinic]*/
+ [clinic start generated code]*/
- /*[clinic]
+ /*[clinic input]
pickle.Pickler.dump
Write a pickled representation of obj to the open file.
- [clinic]*/
+ [clinic start generated code]*/
8. Declare each of the parameters to the function. Each parameter
@@ -207,18 +207,18 @@ convert a function to work with it. Let's dive in!
Sample::
- /*[clinic]
+ /*[clinic input]
module pickle
class pickle.Pickler
- [clinic]*/
+ [clinic start generated code]*/
- /*[clinic]
+ /*[clinic input]
pickle.Pickler.dump
obj: 'O'
Write a pickled representation of obj to the open file.
- [clinic]*/
+ [clinic start generated code]*/
9. If your function has ``|`` in the format string, meaning some
parameters have default values, you can ignore it. Argument
@@ -247,19 +247,19 @@ convert a function to work with it. Let's dive in!
Sample::
- /*[clinic]
+ /*[clinic input]
module pickle
class pickle.Pickler
- [clinic]*/
+ [clinic start generated code]*/
- /*[clinic]
+ /*[clinic input]
pickle.Pickler.dump
obj: 'O'
/
Write a pickled representation of obj to the open file.
- [clinic]*/
+ [clinic start generated code]*/
11. It's helpful to write a per-parameter docstring for each parameter.
But per-parameter docstrings are optional; you can skip this step
@@ -274,12 +274,12 @@ convert a function to work with it. Let's dive in!
Sample::
- /*[clinic]
+ /*[clinic input]
module pickle
class pickle.Pickler
- [clinic]*/
+ [clinic start generated code]*/
- /*[clinic]
+ /*[clinic input]
pickle.Pickler.dump
obj: 'O'
@@ -287,19 +287,19 @@ convert a function to work with it. Let's dive in!
/
Write a pickled representation of obj to the open file.
- [clinic]*/
+ [clinic start generated code]*/
12. Save and close the file, then run ``Tools/clinic/clinic.py`` on it.
With luck everything worked and your block now has output! Reopen
the file in your text editor to see::
- /*[clinic]
+ /*[clinic input]
module pickle
class pickle.Pickler
- [clinic]*/
- /*[clinic checksum: da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
+ [clinic start generated code]*/
+ /*[clinic end generated code: checksum=da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
- /*[clinic]
+ /*[clinic input]
pickle.Pickler.dump
obj: 'O'
@@ -307,7 +307,7 @@ convert a function to work with it. Let's dive in!
/
Write a pickled representation of obj to the open file.
- [clinic]*/
+ [clinic start generated code]*/
PyDoc_STRVAR(pickle_Pickler_dump__doc__,
"Write a pickled representation of obj to the open file.\n"
@@ -315,7 +315,7 @@ convert a function to work with it. Let's dive in!
...
static PyObject *
pickle_Pickler_dump_impl(PyObject *self, PyObject *obj)
- /*[clinic checksum: 3bd30745bf206a48f8b576a1da3d90f55a0a4187]*/
+ /*[clinic end generated code: checksum=3bd30745bf206a48f8b576a1da3d90f55a0a4187]*/
Obviously, if Argument Clinic didn't produce any output, it's because
it found an error in your input. Keep fixing your errors and retrying
@@ -373,7 +373,7 @@ convert a function to work with it. Let's dive in!
static return_type
your_function_impl(...)
- /*[clinic checksum: ...]*/
+ /*[clinic end generated code: checksum=...]*/
{
...
@@ -383,13 +383,13 @@ convert a function to work with it. Let's dive in!
Sample::
- /*[clinic]
+ /*[clinic input]
module pickle
class pickle.Pickler
- [clinic]*/
- /*[clinic checksum: da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
+ [clinic start generated code]*/
+ /*[clinic end generated code: checksum=da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
- /*[clinic]
+ /*[clinic input]
pickle.Pickler.dump
obj: 'O'
@@ -397,7 +397,7 @@ convert a function to work with it. Let's dive in!
/
Write a pickled representation of obj to the open file.
- [clinic]*/
+ [clinic start generated code]*/
PyDoc_STRVAR(pickle_Pickler_dump__doc__,
"Write a pickled representation of obj to the open file.\n"
@@ -405,7 +405,7 @@ convert a function to work with it. Let's dive in!
...
static PyObject *
pickle_Pickler_dump_impl(PyObject *self, PyObject *obj)
- /*[clinic checksum: 3bd30745bf206a48f8b576a1da3d90f55a0a4187]*/
+ /*[clinic end generated code: checksum=3bd30745bf206a48f8b576a1da3d90f55a0a4187]*/
{
/* Check whether the Pickler was initialized correctly (issue3664).
Developers often forget to call __init__() in their subclasses, which
@@ -470,7 +470,7 @@ then add ``"_impl"`` to the end and use that for the name of the impl function.
For example, if we wanted to rename the C function names generated for
``pickle.Pickler.dump``, it'd look like this::
- /*[clinic]
+ /*[clinic input]
pickle.Pickler.dump as pickler_dumper
...
@@ -515,7 +515,7 @@ after these parameters. As an example, here's how ``curses.window.addch``
uses optional groups to make the first two parameters and the last
parameter optional::
- /*[clinic]
+ /*[clinic input]
curses.window.addch
@@ -666,7 +666,7 @@ on the right is the text you'd replace it with.
As an example, here's our sample ``pickle.Pickler.dump`` using the proper
converter::
- /*[clinic]
+ /*[clinic input]
pickle.Pickler.dump
obj: object
@@ -674,7 +674,7 @@ converter::
/
Write a pickled representation of obj to the open file.
- [clinic]*/
+ [clinic start generated code]*/
Argument Clinic will show you all the converters it has
available. For each converter it'll show you all the parameters
@@ -769,9 +769,9 @@ runtime state. This is simple: you simply define a Python block.
A Python block uses different delimiter lines than an Argument
Clinic function block. It looks like this::
- /*[python]
+ /*[python input]
# python code goes here
- [python]*/
+ [python start generated code]*/
All the code inside the Python block is executed at the
time it's parsed. All text written to stdout inside the block
@@ -780,9 +780,9 @@ is redirected into the "output" after the block.
As an example, here's a Python block that adds a static integer
variable to the C code::
- /*[python]
+ /*[python input]
print('static int __ignored_unused_variable__ = 0;')
- [python]*/
+ [python start generated code]*/
static int __ignored_unused_variable__ = 0;
/*[python checksum:...]*/
@@ -806,7 +806,7 @@ If you only have one or two functions with the same type for ``self``,
you can directly use Argument Clinic's existing ``self`` converter,
passing in the type you want to use as the ``type`` parameter::
- /*[clinic]
+ /*[clinic input]
_pickle.Pickler.dump
@@ -815,18 +815,18 @@ passing in the type you want to use as the ``type`` parameter::
/
Write a pickled representation of the given object to the open file.
- [clinic]*/
+ [clinic start generated code]*/
On the other hand, if you have a lot of functions that will use the same
type for ``self``, it's best to create your own converter, subclassing
``self_converter`` but overwriting the ``type`` member::
- /*[clinic]
+ /*[clinic input]
class PicklerObject_converter(self_converter):
type = "PicklerObject *"
- [clinic]*/
+ [clinic start generated code]*/
- /*[clinic]
+ /*[clinic input]
_pickle.Pickler.dump
@@ -835,7 +835,7 @@ type for ``self``, it's best to create your own converter, subclassing
/
Write a pickled representation of the given object to the open file.
- [clinic]*/
+ [clinic start generated code]*/
@@ -917,14 +917,14 @@ to specify in your subclass. Here's the current list:
Here's the simplest example of a custom converter, from ``Modules/zlibmodule.c``::
- /*[python]
+ /*[python input]
class uint_converter(CConverter):
type = 'unsigned int'
converter = 'uint_converter'
- [python]*/
- /*[python checksum: da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
+ [python start generated code]*/
+ /*[python end generated code: checksum=da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
This block adds a converter to Argument Clinic named ``uint``. Parameters
declared as ``uint`` will be declared as type ``unsigned int``, and will
@@ -963,8 +963,8 @@ to run Python blocks lets you use Python as a Python preprocessor!
Since Python comments are different from C comments, Argument Clinic
blocks embedded in Python files look slightly different. They look like this::
- #/*[python]
+ #/*[python input]
#print("def foo(): pass")
- #[python]*/
+ #[python start generated code]*/
def foo(): pass
#/*[python checksum:...]*/