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"""
Customizations of sphinx for gnuradio use.
"""
from sphinx.ext.autodoc import py_ext_sig_re
from sphinx.ext.autodoc import ClassDocumenter, FunctionDocumenter, members_option
from sphinx.ext.autodoc import bool_option, members_set_option, identity
from sphinx.ext.autodoc import ALL
# A dictionary of the number of lines to delete from the beginning of docstrings
lines_to_delete = {}
def setup(sp):
# Fix line-breaks in signature.
sp.connect('autodoc-process-signature', fix_signature)
sp.connect('autodoc-process-docstring', remove_lines)
# Add node to autodocument signal-processing blocks.
sp.add_autodocumenter(OldBlockDocumenter)
sp.add_autodocumenter(BlockDocumenter)
sp.add_autodocumenter(PyBlockDocumenter)
def remove_lines(app, what, name, obj, options, lines):
del_lines = lines_to_delete.get(name, 0)
# Don't delete any lines if this is called again.
lines_to_delete[name] = 0
lines[:] = lines[del_lines:]
def fix_signature(app, what, name, obj, options, signature, return_annotation):
"""
SWIG produces signature at the top of docstrings of the form
'blah(int arg1, float arg2) -> return_type'
and if the string is long it breaks it over multiple lines.
Sphinx gets confused if it is broken over multiple lines.
fix_signature and remove_lines get around this problem.
"""
if return_annotation is not None:
return
if hasattr(obj, '__doc__'):
docs = obj.__doc__
else:
docs = None
if not docs:
return None
doclines = docs.split('\n')
del_lines = remove_linebreaks_in_signature(doclines)
# match first line of docstring against signature RE
match = py_ext_sig_re.match(doclines[0])
if not match:
return None
exmod, path, base, args, retann = match.groups()
# ok, now jump over remaining empty lines and set the remaining
# lines as the new doclines
i = 1
while i < len(doclines) and not doclines[i].strip():
i += 1
lines_to_delete[name] = i - 1 + del_lines
# format args
signature = "({0})".format(args)
return signature, retann
def remove_linebreaks_in_signature(lines):
alllines = '\n'.join(lines)
alllines = alllines.lstrip()
bits = alllines.split('->')
if len(bits) == 1:
return 0
after = '->'.join(bits[1:])
after_lines = after.split('\n')
ending = None
remainder = []
for line in after_lines:
if line and ending is None:
ending = line
elif ending is not None:
remainder.append(line)
first_line = ' '.join([a.strip() for a in bits[0].split('\n') if a.strip()]) + ' -> ' + ending.strip()
match = py_ext_sig_re.match(first_line)
# If it is a signature, make the change to lines.
if match:
new_lines = [first_line] + remainder
lines[:] = new_lines
return len(bits[0].split('\n'))
else:
return 0
# These methods are not displayed in the documentation of blocks to
# avoid redundancy.
common_block_members =[
'check_topology',
'detail',
'history',
'input_signature',
'name',
'nitems_read',
'nitems_written',
'nthreads',
'output_multiple',
'output_signature',
'relative_rate',
'set_detail',
'set_nthreads',
'start',
'stop',
'thisown',
'to_basic_block',
'unique_id',
'make',
]
class OldBlockDocumenter(FunctionDocumenter):
"""
Specialized Documenter subclass for gnuradio blocks.
It merges together the documentation for the generator function (e.g. gr.head)
with the wrapped sptr (e.g. gr.gr_head_sptr) to keep the documentation
tidier.
"""
objtype = 'oldblock'
directivetype = 'function'
# Don't want to use this for generic functions for give low priority.
priority = -10
def __init__(self, *args, **kwargs):
super(OldBlockDocumenter, self).__init__(*args, **kwargs)
# Get class name
bits = self.name.split('.')
if len(bits) != 3 or bits[0] != 'gnuradio':
raise ValueError("expected name to be of form gnuradio.x.y but it is {0}".format(self.name))
sptr_name = 'gnuradio.{0}.{0}_{1}_sptr'.format(bits[1], bits[2])
# Create a Class Documenter to create documentation for the classes members.
self.classdoccer = ClassDocumenter(self.directive, sptr_name, indent=self.content_indent)
self.classdoccer.doc_as_attr = False
self.classdoccer.real_modname = self.classdoccer.get_real_modname()
self.classdoccer.options.members = ALL
self.classdoccer.options.exclude_members = common_block_members
self.classdoccer.parse_name()
self.classdoccer.import_object()
def document_members(self, *args, **kwargs):
return self.classdoccer.document_members(*args, **kwargs)
class BlockDocumenter(FunctionDocumenter):
"""
Specialized Documenter subclass for new style gnuradio blocks.
It merges together the documentation for the generator function (e.g. wavelet.squash_ff)
with the wrapped sptr (e.g. wavelet.squash_ff_sptr) to keep the documentation
tidier.
"""
objtype = 'block'
directivetype = 'function'
# Don't want to use this for generic functions for give low priority.
priority = -10
def __init__(self, *args, **kwargs):
super(BlockDocumenter, self).__init__(*args, **kwargs)
# Get class name
sptr_name = self.name + '_sptr'
# Create a Class Documenter to create documentation for the classes members.
self.classdoccer = ClassDocumenter(self.directive, sptr_name, indent=self.content_indent)
self.classdoccer.doc_as_attr = False
self.classdoccer.real_modname = self.classdoccer.get_real_modname()
self.classdoccer.options.members = ALL
self.classdoccer.options.exclude_members = common_block_members
self.classdoccer.parse_name()
self.classdoccer.import_object()
def document_members(self, *args, **kwargs):
return self.classdoccer.document_members(*args, **kwargs)
class PyBlockDocumenter(ClassDocumenter):
"""
Specialized Documenter subclass for hierarchical python gnuradio blocks.
"""
objtype = 'pyblock'
directivetype = 'class'
def __init__(self, *args, **kwargs):
super(PyBlockDocumenter, self).__init__(*args, **kwargs)
self.options.members = ALL
self.options.exclude_members = common_block_members
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