def try_format_obj(self, obj):
"""
Format non-graphics object.
OUTPUT:
A string representation or ``None``. The latter means that no
Sage-specific formatting is defined and the default should be
used.
TESTS::
sage: from sage.misc.displayhook import DisplayHookBase
sage: dhb = DisplayHookBase()
sage: dhb.try_format_obj('Hello, world!')
"""
if self.simple:
return self.simple_format_obj(obj)
if self.ascii_art:
from sage.misc.ascii_art import ascii_art
return ascii_art(obj)
if self.typeset:
from sage.misc.latex import pretty_print
pretty_print(obj)
return ''
assert(False)
def __call__(self, obj, p, cycle):
r"""
Return typeset format.
INPUT:
- ``obj`` -- anything. Object to format.
- ``p`` -- PrettyPrinter instance.
- ``cycle`` -- boolean. Whether there is a cycle.
OUTPUT:
Boolean. Whether the representer is applicable to ``obj``. If
``True``, the string representation is appended to ``p``.
EXAMPLES::
sage: from sage.repl.display.fancy_repr import TypesetRepr
sage: pp = TypesetRepr()
sage: pp.format_string(x/2)
<html><script type="math/tex">\newcommand{\Bold}[1]{\mathbf{#1}}\frac{1}{2} \, x</script></html>
''
"""
# We should probably return that as string, but
# latex.pretty_print doesn't give us a useful interface
from sage.misc.latex import pretty_print
pretty_print(obj)
return True
def __call__(self, obj, p, cycle):
r"""
Return typeset format.
INPUT:
- ``obj`` -- anything. Object to format.
- ``p`` -- PrettyPrinter instance.
- ``cycle`` -- boolean. Whether there is a cycle.
OUTPUT:
Boolean. Whether the representer is applicable to ``obj``. If
``True``, the string representation is appended to ``p``.
EXAMPLES::
sage: from sage.repl.display.fancy_repr import TypesetRepr
sage: pp = TypesetRepr()
sage: pp.format_string(x/2)
<html><script type="math/tex">\newcommand{\Bold}[1]{\mathbf{#1}}\frac{1}{2} \, x</script></html>
''
"""
# We should probably return that as string, but
# latex.pretty_print doesn't give us a useful interface
from sage.misc.latex import pretty_print
pretty_print(obj)
return True