mirror of
https://github.com/Kitware/CMake.git
synced 2025-10-20 21:40:15 +08:00
cc21d0e478
Add signatures to the collection of observed objects (which can be referenced elsewhere). Don't automatically strip parameters from a :command: reference, as these may now link signatures. (Do, however, munge them into 'text <ref>' form if they aren't already, as not doing so adds an extra '()' for some reason.) Correspondingly, change xref resolution to try to match 'command' when a ref like 'command(args)' is not matched, so that existing links to commands that have not been converted to use the new signature directive don't immediately break.
587 lines
23 KiB
Python
587 lines
23 KiB
Python
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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import os
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import re
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from dataclasses import dataclass
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from typing import Any, cast
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# Override much of pygments' CMakeLexer.
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# We need to parse CMake syntax definitions, not CMake code.
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# For hard test cases that use much of the syntax below, see
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# - module/FindPkgConfig.html (with "glib-2.0>=2.10 gtk+-2.0" and similar)
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# - module/ExternalProject.html (with http:// https:// git@; also has command options -E --build)
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# - manual/cmake-buildsystem.7.html (with nested $<..>; relative and absolute paths, "::")
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from pygments.lexers import CMakeLexer
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from pygments.token import Name, Operator, Punctuation, String, Text, Comment, Generic, Whitespace, Number
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from pygments.lexer import bygroups
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# RE to split multiple command signatures
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sig_end_re = re.compile(r'(?<=[)])\n')
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# Notes on regular expressions below:
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# - [\.\+-] are needed for string constants like gtk+-2.0
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# - Unix paths are recognized by '/'; support for Windows paths may be added if needed
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# - (\\.) allows for \-escapes (used in manual/cmake-language.7)
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# - $<..$<..$>..> nested occurrence in cmake-buildsystem
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# - Nested variable evaluations are only supported in a limited capacity. Only
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# one level of nesting is supported and at most one nested variable can be present.
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CMakeLexer.tokens["root"] = [
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(r'\b(\w+)([ \t]*)(\()', bygroups(Name.Function, Text, Name.Function), '#push'), # fctn(
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(r'\(', Name.Function, '#push'),
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(r'\)', Name.Function, '#pop'),
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(r'\[', Punctuation, '#push'),
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(r'\]', Punctuation, '#pop'),
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(r'[|;,.=*\-]', Punctuation),
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(r'\\\\', Punctuation), # used in commands/source_group
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(r'[:]', Operator),
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(r'[<>]=', Punctuation), # used in FindPkgConfig.cmake
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(r'\$<', Operator, '#push'), # $<...>
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(r'<[^<|]+?>(\w*\.\.\.)?', Name.Variable), # <expr>
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(r'(\$\w*\{)([^\}\$]*)?(?:(\$\w*\{)([^\}]+?)(\}))?([^\}]*?)(\})', # ${..} $ENV{..}, possibly nested
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bygroups(Operator, Name.Tag, Operator, Name.Tag, Operator, Name.Tag, Operator)),
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(r'([A-Z]+\{)(.+?)(\})', bygroups(Operator, Name.Tag, Operator)), # DATA{ ...}
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(r'[a-z]+(@|(://))((\\.)|[\w.+-:/\\])+', Name.Attribute), # URL, git@, ...
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(r'/\w[\w\.\+-/\\]*', Name.Attribute), # absolute path
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(r'/', Name.Attribute),
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(r'\w[\w\.\+-]*/[\w.+-/\\]*', Name.Attribute), # relative path
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(r'[A-Z]((\\.)|[\w.+-])*[a-z]((\\.)|[\w.+-])*', Name.Builtin), # initial A-Z, contains a-z
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(r'@?[A-Z][A-Z0-9_]*', Name.Constant),
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(r'[a-z_]((\\;)|(\\ )|[\w.+-])*', Name.Builtin),
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(r'[0-9][0-9\.]*', Number),
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(r'(?s)"(\\"|[^"])*"', String), # "string"
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(r'\.\.\.', Name.Variable),
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(r'<', Operator, '#push'), # <..|..> is different from <expr>
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(r'>', Operator, '#pop'),
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(r'\n', Whitespace),
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(r'[ \t]+', Whitespace),
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(r'#.*\n', Comment),
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# (r'[^<>\])\}\|$"# \t\n]+', Name.Exception), # fallback, for debugging only
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]
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from docutils.utils.code_analyzer import Lexer, LexerError
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from docutils.parsers.rst import Directive, directives
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from docutils.transforms import Transform
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from docutils import io, nodes
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from sphinx.directives import ObjectDescription, nl_escape_re
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from sphinx.domains import Domain, ObjType
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from sphinx.roles import XRefRole
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from sphinx.util.nodes import make_refnode
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from sphinx.util import logging, ws_re
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from sphinx import addnodes
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logger = logging.getLogger(__name__)
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sphinx_before_1_4 = False
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sphinx_before_1_7_2 = False
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try:
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from sphinx import version_info
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if version_info < (1, 4):
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sphinx_before_1_4 = True
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if version_info < (1, 7, 2):
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sphinx_before_1_7_2 = True
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except ImportError:
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# The `sphinx.version_info` tuple was added in Sphinx v1.2:
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sphinx_before_1_4 = True
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sphinx_before_1_7_2 = True
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if sphinx_before_1_7_2:
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# Monkey patch for sphinx generating invalid content for qcollectiongenerator
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# https://github.com/sphinx-doc/sphinx/issues/1435
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from sphinx.util.pycompat import htmlescape
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from sphinx.builders.qthelp import QtHelpBuilder
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old_build_keywords = QtHelpBuilder.build_keywords
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def new_build_keywords(self, title, refs, subitems):
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old_items = old_build_keywords(self, title, refs, subitems)
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new_items = []
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for item in old_items:
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before, rest = item.split("ref=\"", 1)
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ref, after = rest.split("\"")
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if ("<" in ref and ">" in ref):
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new_items.append(before + "ref=\"" + htmlescape(ref) + "\"" + after)
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else:
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new_items.append(item)
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return new_items
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QtHelpBuilder.build_keywords = new_build_keywords
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@dataclass
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class ObjectEntry:
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docname: str
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objtype: str
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node_id: str
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name: str
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class CMakeModule(Directive):
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required_arguments = 1
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optional_arguments = 0
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final_argument_whitespace = True
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option_spec = {'encoding': directives.encoding}
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def __init__(self, *args, **keys):
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self.re_start = re.compile(r'^#\[(?P<eq>=*)\[\.rst:$')
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Directive.__init__(self, *args, **keys)
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def run(self):
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settings = self.state.document.settings
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if not settings.file_insertion_enabled:
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raise self.warning('"%s" directive disabled.' % self.name)
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env = self.state.document.settings.env
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rel_path, path = env.relfn2path(self.arguments[0])
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path = os.path.normpath(path)
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encoding = self.options.get('encoding', settings.input_encoding)
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e_handler = settings.input_encoding_error_handler
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try:
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settings.record_dependencies.add(path)
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f = io.FileInput(source_path=path, encoding=encoding,
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error_handler=e_handler)
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except UnicodeEncodeError as error:
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msg = ('Problems with "%s" directive path:\n'
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'Cannot encode input file path "%s" '
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'(wrong locale?).' % (self.name, path))
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raise self.severe(msg)
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except IOError as error:
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msg = 'Problems with "%s" directive path:\n%s.' % (self.name, error)
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raise self.severe(msg)
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raw_lines = f.read().splitlines()
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f.close()
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rst = None
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lines = []
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for line in raw_lines:
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if rst is not None and rst != '#':
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# Bracket mode: check for end bracket
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pos = line.find(rst)
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if pos >= 0:
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if line[0] == '#':
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line = ''
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else:
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line = line[0:pos]
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rst = None
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else:
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# Line mode: check for .rst start (bracket or line)
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m = self.re_start.match(line)
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if m:
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rst = ']%s]' % m.group('eq')
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line = ''
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elif line == '#.rst:':
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rst = '#'
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line = ''
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elif rst == '#':
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if line == '#' or line[:2] == '# ':
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line = line[2:]
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else:
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rst = None
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line = ''
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elif rst is None:
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line = ''
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lines.append(line)
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if rst is not None and rst != '#':
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raise self.warning('"%s" found unclosed bracket "#[%s[.rst:" in %s' %
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(self.name, rst[1:-1], path))
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self.state_machine.insert_input(lines, path)
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return []
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class _cmake_index_entry:
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def __init__(self, desc):
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self.desc = desc
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def __call__(self, title, targetid, main = 'main'):
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# See https://github.com/sphinx-doc/sphinx/issues/2673
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if sphinx_before_1_4:
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return ('pair', u'%s ; %s' % (self.desc, title), targetid, main)
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else:
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return ('pair', u'%s ; %s' % (self.desc, title), targetid, main, None)
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_cmake_index_objs = {
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'command': _cmake_index_entry('command'),
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'cpack_gen': _cmake_index_entry('cpack generator'),
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'envvar': _cmake_index_entry('envvar'),
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'generator': _cmake_index_entry('generator'),
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'genex': _cmake_index_entry('genex'),
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'guide': _cmake_index_entry('guide'),
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'manual': _cmake_index_entry('manual'),
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'module': _cmake_index_entry('module'),
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'policy': _cmake_index_entry('policy'),
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'prop_cache': _cmake_index_entry('cache property'),
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'prop_dir': _cmake_index_entry('directory property'),
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'prop_gbl': _cmake_index_entry('global property'),
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'prop_inst': _cmake_index_entry('installed file property'),
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'prop_sf': _cmake_index_entry('source file property'),
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'prop_test': _cmake_index_entry('test property'),
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'prop_tgt': _cmake_index_entry('target property'),
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'variable': _cmake_index_entry('variable'),
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}
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class CMakeTransform(Transform):
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# Run this transform early since we insert nodes we want
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# treated as if they were written in the documents.
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default_priority = 210
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def __init__(self, document, startnode):
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Transform.__init__(self, document, startnode)
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self.titles = {}
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def parse_title(self, docname):
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"""Parse a document title as the first line starting in [A-Za-z0-9<$]
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or fall back to the document basename if no such line exists.
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The cmake --help-*-list commands also depend on this convention.
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Return the title or False if the document file does not exist.
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"""
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env = self.document.settings.env
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title = self.titles.get(docname)
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if title is None:
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fname = os.path.join(env.srcdir, docname+'.rst')
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try:
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f = open(fname, 'r')
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except IOError:
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title = False
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else:
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for line in f:
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if len(line) > 0 and (line[0].isalnum() or line[0] == '<' or line[0] == '$'):
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title = line.rstrip()
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break
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f.close()
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if title is None:
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title = os.path.basename(docname)
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self.titles[docname] = title
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return title
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def apply(self):
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env = self.document.settings.env
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# Treat some documents as cmake domain objects.
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objtype, sep, tail = env.docname.partition('/')
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make_index_entry = _cmake_index_objs.get(objtype)
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if make_index_entry:
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title = self.parse_title(env.docname)
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# Insert the object link target.
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if objtype == 'command':
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targetname = title.lower()
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elif objtype == 'guide' and not tail.endswith('/index'):
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targetname = tail
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else:
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if objtype == 'genex':
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m = CMakeXRefRole._re_genex.match(title)
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if m:
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title = m.group(1)
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targetname = title
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targetid = '%s:%s' % (objtype, targetname)
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targetnode = nodes.target('', '', ids=[targetid])
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self.document.note_explicit_target(targetnode)
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self.document.insert(0, targetnode)
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# Insert the object index entry.
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indexnode = addnodes.index()
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indexnode['entries'] = [make_index_entry(title, targetid)]
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self.document.insert(0, indexnode)
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# Add to cmake domain object inventory
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domain = cast(CMakeDomain, env.get_domain('cmake'))
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domain.note_object(objtype, targetname, targetid, targetid)
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class CMakeObject(ObjectDescription):
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def handle_signature(self, sig, signode):
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# called from sphinx.directives.ObjectDescription.run()
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signode += addnodes.desc_name(sig, sig)
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if self.objtype == 'genex':
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m = CMakeXRefRole._re_genex.match(sig)
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if m:
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sig = m.group(1)
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return sig
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def add_target_and_index(self, name, sig, signode):
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if self.objtype == 'command':
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targetname = name.lower()
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else:
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targetname = name
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targetid = '%s:%s' % (self.objtype, targetname)
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if targetid not in self.state.document.ids:
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signode['names'].append(targetid)
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signode['ids'].append(targetid)
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signode['first'] = (not self.names)
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self.state.document.note_explicit_target(signode)
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domain = cast(CMakeDomain, self.env.get_domain('cmake'))
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domain.note_object(self.objtype, targetname, targetid, targetid,
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location=signode)
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make_index_entry = _cmake_index_objs.get(self.objtype)
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if make_index_entry:
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self.indexnode['entries'].append(make_index_entry(name, targetid))
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class CMakeSignatureObject(CMakeObject):
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object_type = 'signature'
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option_spec = {
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'target': directives.unchanged,
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}
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def get_signatures(self):
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content = nl_escape_re.sub('', self.arguments[0])
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lines = sig_end_re.split(content)
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return [ws_re.sub(' ', line.strip()) for line in lines]
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def handle_signature(self, sig, signode):
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language = 'cmake'
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classes = ['code', 'cmake', 'highlight']
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node = addnodes.desc_name(sig, '', classes=classes)
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try:
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tokens = Lexer(sig, language, 'short')
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except LexerError as error:
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if self.state.document.settings.report_level > 2:
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# Silently insert without syntax highlighting.
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tokens = Lexer(sig, language, 'none')
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else:
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raise self.warning(error)
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for classes, value in tokens:
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if classes:
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node += nodes.inline(value, value, classes=classes)
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else:
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node += nodes.Text(value)
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signode.clear()
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signode += node
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return sig
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def __init__(self, *args, **kwargs):
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self.targetnames = {}
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super().__init__(*args, **kwargs)
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def add_target_and_index(self, name, sig, signode):
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if name in self.targetnames:
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sigargs = self.targetnames[name]
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else:
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def extract_keywords(params):
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for p in params:
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if p[0].isalpha():
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yield p
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else:
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return
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keywords = extract_keywords(name.split('(')[1].split())
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sigargs = ' '.join(keywords)
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targetname = sigargs.lower()
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targetid = nodes.make_id(targetname)
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if targetid not in self.state.document.ids:
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signode['names'].append(targetname)
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signode['ids'].append(targetid)
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signode['first'] = (not self.names)
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self.state.document.note_explicit_target(signode)
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# Register the signature as a command object.
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command = name.split('(')[0].lower()
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refname = f'{command}({sigargs})'
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refid = f'command:{command}({targetname})'
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domain = cast(CMakeDomain, self.env.get_domain('cmake'))
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domain.note_object('command', name=refname, target_id=refid,
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node_id=targetid, location=signode)
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def run(self):
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targets = self.options.get('target')
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if targets is not None:
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signatures = self.get_signatures()
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targets = [t.strip() for t in targets.split('\n')]
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for signature, target in zip(signatures, targets):
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self.targetnames[signature] = target
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return super().run()
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class CMakeXRefRole(XRefRole):
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# See sphinx.util.nodes.explicit_title_re; \x00 escapes '<'.
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_re = re.compile(r'^(.+?)(\s*)(?<!\x00)<(.*?)>$', re.DOTALL)
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_re_ref = re.compile(r'^.*\s<\w+([(][\w\s]+[)])?>$', re.DOTALL)
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_re_genex = re.compile(r'^\$<([^<>:]+)(:[^<>]+)?>$', re.DOTALL)
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_re_guide = re.compile(r'^([^<>/]+)/([^<>]*)$', re.DOTALL)
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def __call__(self, typ, rawtext, text, *args, **keys):
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if typ == 'cmake:command':
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m = CMakeXRefRole._re_ref.match(text)
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if m is None:
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text = f'{text} <{text}>'
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elif typ == 'cmake:genex':
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m = CMakeXRefRole._re_genex.match(text)
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if m:
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text = '%s <%s>' % (text, m.group(1))
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elif typ == 'cmake:guide':
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m = CMakeXRefRole._re_guide.match(text)
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if m:
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text = '%s <%s>' % (m.group(2), text)
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# CMake cross-reference targets frequently contain '<' so escape
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# any explicit `<target>` with '<' not preceded by whitespace.
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while True:
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m = CMakeXRefRole._re.match(text)
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if m and len(m.group(2)) == 0:
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text = '%s\x00<%s>' % (m.group(1), m.group(3))
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else:
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break
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return XRefRole.__call__(self, typ, rawtext, text, *args, **keys)
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# We cannot insert index nodes using the result_nodes method
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# because CMakeXRefRole is processed before substitution_reference
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# nodes are evaluated so target nodes (with 'ids' fields) would be
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# duplicated in each evaluated substitution replacement. The
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# docutils substitution transform does not allow this. Instead we
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# use our own CMakeXRefTransform below to add index entries after
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# substitutions are completed.
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#
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# def result_nodes(self, document, env, node, is_ref):
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# pass
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class CMakeXRefTransform(Transform):
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# Run this transform early since we insert nodes we want
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# treated as if they were written in the documents, but
|
|
# after the sphinx (210) and docutils (220) substitutions.
|
|
default_priority = 221
|
|
|
|
def apply(self):
|
|
env = self.document.settings.env
|
|
|
|
# Find CMake cross-reference nodes and add index and target
|
|
# nodes for them.
|
|
for ref in self.document.traverse(addnodes.pending_xref):
|
|
if not ref['refdomain'] == 'cmake':
|
|
continue
|
|
|
|
objtype = ref['reftype']
|
|
make_index_entry = _cmake_index_objs.get(objtype)
|
|
if not make_index_entry:
|
|
continue
|
|
|
|
objname = ref['reftarget']
|
|
if objtype == 'guide' and CMakeXRefRole._re_guide.match(objname):
|
|
# Do not index cross-references to guide sections.
|
|
continue
|
|
|
|
if objtype == 'command':
|
|
# Index signature references to their parent command.
|
|
objname = objname.split('(')[0].lower()
|
|
|
|
targetnum = env.new_serialno('index-%s:%s' % (objtype, objname))
|
|
|
|
targetid = 'index-%s-%s:%s' % (targetnum, objtype, objname)
|
|
targetnode = nodes.target('', '', ids=[targetid])
|
|
self.document.note_explicit_target(targetnode)
|
|
|
|
indexnode = addnodes.index()
|
|
indexnode['entries'] = [make_index_entry(objname, targetid, '')]
|
|
ref.replace_self([indexnode, targetnode, ref])
|
|
|
|
class CMakeDomain(Domain):
|
|
"""CMake domain."""
|
|
name = 'cmake'
|
|
label = 'CMake'
|
|
object_types = {
|
|
'command': ObjType('command', 'command'),
|
|
'cpack_gen': ObjType('cpack_gen', 'cpack_gen'),
|
|
'envvar': ObjType('envvar', 'envvar'),
|
|
'generator': ObjType('generator', 'generator'),
|
|
'genex': ObjType('genex', 'genex'),
|
|
'guide': ObjType('guide', 'guide'),
|
|
'variable': ObjType('variable', 'variable'),
|
|
'module': ObjType('module', 'module'),
|
|
'policy': ObjType('policy', 'policy'),
|
|
'prop_cache': ObjType('prop_cache', 'prop_cache'),
|
|
'prop_dir': ObjType('prop_dir', 'prop_dir'),
|
|
'prop_gbl': ObjType('prop_gbl', 'prop_gbl'),
|
|
'prop_inst': ObjType('prop_inst', 'prop_inst'),
|
|
'prop_sf': ObjType('prop_sf', 'prop_sf'),
|
|
'prop_test': ObjType('prop_test', 'prop_test'),
|
|
'prop_tgt': ObjType('prop_tgt', 'prop_tgt'),
|
|
'manual': ObjType('manual', 'manual'),
|
|
}
|
|
directives = {
|
|
'command': CMakeObject,
|
|
'envvar': CMakeObject,
|
|
'genex': CMakeObject,
|
|
'signature': CMakeSignatureObject,
|
|
'variable': CMakeObject,
|
|
# Other `object_types` cannot be created except by the `CMakeTransform`
|
|
}
|
|
roles = {
|
|
'command': CMakeXRefRole(fix_parens = True, lowercase = True),
|
|
'cpack_gen': CMakeXRefRole(),
|
|
'envvar': CMakeXRefRole(),
|
|
'generator': CMakeXRefRole(),
|
|
'genex': CMakeXRefRole(),
|
|
'guide': CMakeXRefRole(),
|
|
'variable': CMakeXRefRole(),
|
|
'module': CMakeXRefRole(),
|
|
'policy': CMakeXRefRole(),
|
|
'prop_cache': CMakeXRefRole(),
|
|
'prop_dir': CMakeXRefRole(),
|
|
'prop_gbl': CMakeXRefRole(),
|
|
'prop_inst': CMakeXRefRole(),
|
|
'prop_sf': CMakeXRefRole(),
|
|
'prop_test': CMakeXRefRole(),
|
|
'prop_tgt': CMakeXRefRole(),
|
|
'manual': CMakeXRefRole(),
|
|
}
|
|
initial_data = {
|
|
'objects': {}, # fullname -> docname, objtype
|
|
}
|
|
|
|
def clear_doc(self, docname):
|
|
to_clear = set()
|
|
for fullname, obj in self.data['objects'].items():
|
|
if obj.docname == docname:
|
|
to_clear.add(fullname)
|
|
for fullname in to_clear:
|
|
del self.data['objects'][fullname]
|
|
|
|
def resolve_xref(self, env, fromdocname, builder,
|
|
typ, target, node, contnode):
|
|
targetid = f'{typ}:{target}'
|
|
obj = self.data['objects'].get(targetid)
|
|
|
|
if obj is None and typ == 'command':
|
|
# If 'command(args)' wasn't found, try just 'command'.
|
|
# TODO: remove this fallback? warn?
|
|
# logger.warning(f'no match for {targetid}')
|
|
command = target.split('(')[0]
|
|
targetid = f'{typ}:{command}'
|
|
obj = self.data['objects'].get(targetid)
|
|
|
|
if obj is None:
|
|
# TODO: warn somehow?
|
|
return None
|
|
|
|
return make_refnode(builder, fromdocname, obj.docname, obj.node_id,
|
|
contnode, target)
|
|
|
|
def note_object(self, objtype: str, name: str, target_id: str,
|
|
node_id: str, location: Any = None):
|
|
if target_id in self.data['objects']:
|
|
other = self.data['objects'][target_id].docname
|
|
logger.warning(
|
|
f'CMake object {target_id!r} also described in {other!r}',
|
|
location=location)
|
|
|
|
self.data['objects'][target_id] = ObjectEntry(
|
|
self.env.docname, objtype, node_id, name)
|
|
|
|
def get_objects(self):
|
|
for refname, obj in self.data['objects'].items():
|
|
yield (refname, obj.name, obj.objtype, obj.docname, obj.node_id, 1)
|
|
|
|
def setup(app):
|
|
app.add_directive('cmake-module', CMakeModule)
|
|
app.add_transform(CMakeTransform)
|
|
app.add_transform(CMakeXRefTransform)
|
|
app.add_domain(CMakeDomain)
|
|
return {"parallel_read_safe": True}
|