text: """
      sphinx.ext.mathbase
      ~~~~~~~~~~~~~~~~~~~
  
      Set up math support in source files and LaTeX/text output.
  
      :copyright: Copyright 2007-2018 by the Sphinx team, see AUTHORS.
      :license: BSD, see LICENSE for details.
  """
  
  import warnings
  
  from docutils import nodes
  from docutils.parsers.rst.roles import math_role as math_role_base
  
  from sphinx.addnodes import math, math_block as displaymath  # NOQA  # to keep compatibility
  from sphinx.builders.latex.nodes import math_reference as eqref  # NOQA  # to keep compatibility
  from sphinx.deprecation import RemovedInSphinx30Warning
  from sphinx.directives.patches import MathDirective as MathDirectiveBase
  from sphinx.domains.math import MathDomain  # NOQA  # to keep compatibility
  from sphinx.domains.math import MathReferenceRole as EqXRefRole  # NOQA  # to keep compatibility
  
  if False:
      # For type annotation
      from typing import Any, Callable, List, Tuple  # NOQA
      from sphinx.application import Sphinx  # NOQA
      from sphinx.writers.html import HTMLTranslator  # NOQA
  
  
  class MathDirective(MathDirectiveBase):
      def run(self):
          warnings.warn('sphinx.ext.mathbase.MathDirective is moved to '
                        'sphinx.directives.patches package.',
                        RemovedInSphinx30Warning, stacklevel=2)
          return super().run()
  
  
  def math_role(role, rawtext, text, lineno, inliner, options={}, content=[]):
      warnings.warn('sphinx.ext.mathbase.math_role() is deprecated. '
                    'Please use docutils.parsers.rst.roles.math_role() instead.',
                    RemovedInSphinx30Warning, stacklevel=2)
      return math_role_base(role, rawtext, text, lineno, inliner, options, content)
  
  
  def get_node_equation_number(writer, node):
      # type: (HTMLTranslator, nodes.math_block) -> str
      warnings.warn('sphinx.ext.mathbase.get_node_equation_number() is moved to '
                    'sphinx.util.math package.',
                    RemovedInSphinx30Warning, stacklevel=2)
      from sphinx.util.math import get_node_equation_number
      return get_node_equation_number(writer, node)
  
  
  def wrap_displaymath(text, label, numbering):
      # type: (str, str, bool) -> str
      warnings.warn('sphinx.ext.mathbase.wrap_displaymath() is moved to '
                    'sphinx.util.math package.',
                    RemovedInSphinx30Warning, stacklevel=2)
      from sphinx.util.math import wrap_displaymath
      return wrap_displaymath(text, label, numbering)
  
  
  def is_in_section_title(node):
      # type: (nodes.Element) -> bool
      """Determine whether the node is in a section title"""
      from sphinx.util.nodes import traverse_parent
  
      warnings.warn('is_in_section_title() is deprecated.',
                    RemovedInSphinx30Warning, stacklevel=2)
  
      for ancestor in traverse_parent(node):
          if isinstance(ancestor, nodes.title) and \
             isinstance(ancestor.parent, nodes.section):
              return True
      return False
  
  
  def setup_math(app, htmlinlinevisitors, htmldisplayvisitors):
      # type: (Sphinx, Tuple[Callable, Callable], Tuple[Callable, Callable]) -> None
      warnings.warn('setup_math() is deprecated. '
                    'Please use app.add_html_math_renderer() instead.',
                    RemovedInSphinx30Warning, stacklevel=2)
  
      app.add_html_math_renderer('unknown', htmlinlinevisitors, htmldisplayvisitors)
  