def _latex_preparse(self, s, locals):
"""
Replace instances of '\sage{x}' in s with the LaTeX version of
x in the running session.
EXAMPLES:
sage: s = 2
sage: sage.misc.latex.Latex()._latex_preparse('\sage{s}', locals())
'2'
"""
i0 = -1
while True:
i = s.find('\\sage{')
if i == -1 or i == i0:
return s
i0 = i
t = s[i+6:]
j = t.find('}')
if j == -1:
return s
var = t[:j]
try:
k = latex(sage_eval.sage_eval(var, locals))
except Exception, msg:
print msg
k = '\\mbox{\\rm [%s undefined]}'%var
s = s[:i] + k + t[j+1:]
def preparse_imports_from_sage(self, line):
"""
Finds occurrences of strings such as ``sage(object)`` in
*line*, converts ``object`` to :attr:`shell.interface`,
and replaces those strings with their identifier in the new
system. This also works with strings such as
``maxima(object`` if :attr:`shell.interface` is
``maxima``.
:param line: the line to transform
:type line: string
.. warning::
This does not parse nested parentheses correctly. Thus,
lines like ``sage(a.foo())`` will not work correctly.
This can't be done in generality with regular expressions.
EXAMPLES::
sage: from sage.misc.interpreter import interface_shell_embed, InterfaceShellTransformer
sage: shell = interface_shell_embed(maxima)
sage: ift = InterfaceShellTransformer(shell=shell, config=shell.config, prefilter_manager=shell.prefilter_manager)
sage: ift.shell.ex('a = 3')
sage: ift.preparse_imports_from_sage('2 + sage(a)')
'2 + sage0 '
sage: maxima.eval('sage0')
'3'
sage: ift.preparse_imports_from_sage('2 + maxima(a)')
'2 + sage1 '
sage: ift.preparse_imports_from_sage('2 + gap(a)')
'2 + gap(a)'
"""
from sage_eval import sage_eval
for sage_code in self._sage_import_re.findall(line):
expr = preparse(sage_code)
result = self.shell.interface(sage_eval(expr, self.shell.user_ns))
self.temporary_objects.append(result)
line = self._sage_import_re.sub(' ' + result.name() + ' ', line, 1)
return line
def preparse_imports_from_sage(self, line):
"""
Finds occurrences of strings such as ``sage(object)`` in
*line*, converts ``object`` to :attr:`shell.interface`,
and replaces those strings with their identifier in the new
system. This also works with strings such as
``maxima(object`` if :attr:`shell.interface` is
``maxima``.
:param line: the line to transform
:type line: string
.. warning::
This does not parse nested parentheses correctly. Thus,
lines like ``sage(a.foo())`` will not work correctly.
This can't be done in generality with regular expressions.
EXAMPLES::
sage: from sage.misc.interpreter import interface_shell_embed, InterfaceShellTransformer
sage: shell = interface_shell_embed(maxima)
sage: ift = InterfaceShellTransformer(shell=shell, config=shell.config, prefilter_manager=shell.prefilter_manager)
sage: ift.shell.ex('a = 3')
sage: ift.preparse_imports_from_sage('2 + sage(a)')
'2 + sage0 '
sage: maxima.eval('sage0')
'3'
sage: ift.preparse_imports_from_sage('2 + maxima(a)')
'2 + sage1 '
sage: ift.preparse_imports_from_sage('2 + gap(a)')
'2 + gap(a)'
"""
from sage_eval import sage_eval
for sage_code in self._sage_import_re.findall(line):
expr = preparse(sage_code)
result = self.shell.interface(sage_eval(expr, self.shell.user_ns))
self.temporary_objects.append(result)
line = self._sage_import_re.sub(' ' + result.name() + ' ', line, 1)
return line
