golden hour

/lib/python2.7/site-packages/jinja2

File/Folder	Size	Actions
__init__.py	2.22 KB
__init__.pyc	2.38 KB
__init__.pyo	2.38 KB
_compat.py	3.95 KB
_compat.pyc	5.99 KB
_compat.pyo	5.99 KB
_stringdefs.py	394.82 KB
_stringdefs.pyc	203.64 KB
_stringdefs.pyo	203.64 KB
bccache.py	12.04 KB
bccache.pyc	13.85 KB
bccache.pyo	13.85 KB
compiler.py	60.34 KB
compiler.pyc	53.21 KB
compiler.pyo	53.15 KB
constants.py	1.59 KB
constants.pyc	1.65 KB
constants.pyo	1.65 KB
debug.py	10.72 KB
debug.pyc	10.45 KB
debug.pyo	10.37 KB
defaults.py	1.03 KB
defaults.pyc	1.46 KB
defaults.pyo	1.46 KB
environment.py	46.14 KB
environment.pyc	45 KB
environment.pyo	44.59 KB
exceptions.py	4.32 KB
exceptions.pyc	6.11 KB
exceptions.pyo	6.11 KB
ext.py	24.49 KB
ext.pyc	23.5 KB
ext.pyo	23.43 KB
filters.py	29.14 KB
filters.pyc	33.13 KB
filters.pyo	33.13 KB
lexer.py	27.73 KB
lexer.pyc	22.11 KB
lexer.pyo	21.95 KB
loaders.py	16.64 KB
loaders.pyc	18.5 KB
loaders.pyo	18.5 KB
meta.py	4.09 KB
meta.pyc	3.92 KB
meta.pyo	3.92 KB
nodes.py	28.23 KB
nodes.pyc	41.54 KB
nodes.pyo	41.06 KB
optimizer.py	2.25 KB
optimizer.pyc	2.78 KB
optimizer.pyo	2.78 KB
parser.py	34.36 KB
parser.pyc	30.5 KB
parser.pyo	30.5 KB
runtime.py	19.1 KB
runtime.pyc	22.5 KB
runtime.pyo	22.46 KB
sandbox.py	18.09 KB
sandbox.pyc	17.23 KB
sandbox.pyo	17.23 KB
tests.py	3.36 KB
tests.pyc	4.93 KB
tests.pyo	4.93 KB
testsuite	-
utils.py	15.79 KB
utils.pyc	19.08 KB
utils.pyo	19.08 KB
visitor.py	3.24 KB
visitor.pyc	3.72 KB
visitor.pyo	3.72 KB

Edit: debug.py

# -*- coding: utf-8 -*-
"""
    jinja2.debug
    ~~~~~~~~~~~~

Implements the debug interface for Jinja.  This module does some pretty
    ugly stuff with the Python traceback system in order to achieve tracebacks
    with correct line numbers, locals and contents.

:copyright: (c) 2010 by the Jinja Team.
    :license: BSD, see LICENSE for more details.
"""
import sys
import traceback
from types import TracebackType
from jinja2.utils import missing, internal_code
from jinja2.exceptions import TemplateSyntaxError
from jinja2._compat import iteritems, reraise, code_type

# on pypy we can take advantage of transparent proxies
try:
    from __pypy__ import tproxy
except ImportError:
    tproxy = None

# how does the raise helper look like?
try:
    exec("raise TypeError, 'foo'")
except SyntaxError:
    raise_helper = 'raise __jinja_exception__[1]'
except TypeError:
    raise_helper = 'raise __jinja_exception__[0], __jinja_exception__[1]'

class TracebackFrameProxy(object):
    """Proxies a traceback frame."""

def __init__(self, tb):
        self.tb = tb
        self._tb_next = None

@property
    def tb_next(self):
        return self._tb_next

def set_next(self, next):
        if tb_set_next is not None:
            try:
                tb_set_next(self.tb, next and next.tb or None)
            except Exception:
                # this function can fail due to all the hackery it does
                # on various python implementations.  We just catch errors
                # down and ignore them if necessary.
                pass
        self._tb_next = next

@property
    def is_jinja_frame(self):
        return '__jinja_template__' in self.tb.tb_frame.f_globals

def __getattr__(self, name):
        return getattr(self.tb, name)

def make_frame_proxy(frame):
    proxy = TracebackFrameProxy(frame)
    if tproxy is None:
        return proxy
    def operation_handler(operation, *args, **kwargs):
        if operation in ('__getattribute__', '__getattr__'):
            return getattr(proxy, args[0])
        elif operation == '__setattr__':
            proxy.__setattr__(*args, **kwargs)
        else:
            return getattr(proxy, operation)(*args, **kwargs)
    return tproxy(TracebackType, operation_handler)

class ProcessedTraceback(object):
    """Holds a Jinja preprocessed traceback for printing or reraising."""

def __init__(self, exc_type, exc_value, frames):
        assert frames, 'no frames for this traceback?'
        self.exc_type = exc_type
        self.exc_value = exc_value
        self.frames = frames

# newly concatenate the frames (which are proxies)
        prev_tb = None
        for tb in self.frames:
            if prev_tb is not None:
                prev_tb.set_next(tb)
            prev_tb = tb
        prev_tb.set_next(None)

def render_as_text(self, limit=None):
        """Return a string with the traceback."""
        lines = traceback.format_exception(self.exc_type, self.exc_value,
                                           self.frames[0], limit=limit)
        return ''.join(lines).rstrip()

def render_as_html(self, full=False):
        """Return a unicode string with the traceback as rendered HTML."""
        from jinja2.debugrenderer import render_traceback
        return u'%s\n\n' % (
            render_traceback(self, full=full),
            self.render_as_text().decode('utf-8', 'replace')
        )

@property
    def is_template_syntax_error(self):
        """`True` if this is a template syntax error."""
        return isinstance(self.exc_value, TemplateSyntaxError)

@property
    def exc_info(self):
        """Exception info tuple with a proxy around the frame objects."""
        return self.exc_type, self.exc_value, self.frames[0]

@property
    def standard_exc_info(self):
        """Standard python exc_info for re-raising"""
        tb = self.frames[0]
        # the frame will be an actual traceback (or transparent proxy) if
        # we are on pypy or a python implementation with support for tproxy
        if type(tb) is not TracebackType:
            tb = tb.tb
        return self.exc_type, self.exc_value, tb

def make_traceback(exc_info, source_hint=None):
    """Creates a processed traceback object from the exc_info."""
    exc_type, exc_value, tb = exc_info
    if isinstance(exc_value, TemplateSyntaxError):
        exc_info = translate_syntax_error(exc_value, source_hint)
        initial_skip = 0
    else:
        initial_skip = 1
    return translate_exception(exc_info, initial_skip)

def translate_syntax_error(error, source=None):
    """Rewrites a syntax error to please traceback systems."""
    error.source = source
    error.translated = True
    exc_info = (error.__class__, error, None)
    filename = error.filename
    if filename is None:
        filename = '<unknown>'
    return fake_exc_info(exc_info, filename, error.lineno)

def translate_exception(exc_info, initial_skip=0):
    """If passed an exc_info it will automatically rewrite the exceptions
    all the way down to the correct line numbers and frames.
    """
    tb = exc_info[2]
    frames = []

# skip some internal frames if wanted
    for x in range(initial_skip):
        if tb is not None:
            tb = tb.tb_next
    initial_tb = tb

while tb is not None:
        # skip frames decorated with @internalcode.  These are internal
        # calls we can't avoid and that are useless in template debugging
        # output.
        if tb.tb_frame.f_code in internal_code:
            tb = tb.tb_next
            continue

# save a reference to the next frame if we override the current
        # one with a faked one.
        next = tb.tb_next

# fake template exceptions
        template = tb.tb_frame.f_globals.get('__jinja_template__')
        if template is not None:
            lineno = template.get_corresponding_lineno(tb.tb_lineno)
            tb = fake_exc_info(exc_info[:2] + (tb,), template.filename,
                               lineno)[2]

frames.append(make_frame_proxy(tb))
        tb = next

# if we don't have any exceptions in the frames left, we have to
    # reraise it unchanged.
    # XXX: can we backup here?  when could this happen?
    if not frames:
        reraise(exc_info[0], exc_info[1], exc_info[2])

return ProcessedTraceback(exc_info[0], exc_info[1], frames)

def fake_exc_info(exc_info, filename, lineno):
    """Helper for `translate_exception`."""
    exc_type, exc_value, tb = exc_info

# figure the real context out
    if tb is not None:
        real_locals = tb.tb_frame.f_locals.copy()
        ctx = real_locals.get('context')
        if ctx:
            locals = ctx.get_all()
        else:
            locals = {}
        for name, value in iteritems(real_locals):
            if name.startswith('l_') and value is not missing:
                locals[name[2:]] = value

# if there is a local called __jinja_exception__, we get
        # rid of it to not break the debug functionality.
        locals.pop('__jinja_exception__', None)
    else:
        locals = {}

# assamble fake globals we need
    globals = {
        '__name__':             filename,
        '__file__':             filename,
        '__jinja_exception__':  exc_info[:2],

# we don't want to keep the reference to the template around
        # to not cause circular dependencies, but we mark it as Jinja
        # frame for the ProcessedTraceback
        '__jinja_template__':   None
    }

# and fake the exception
    code = compile('\n' * (lineno - 1) + raise_helper, filename, 'exec')

# if it's possible, change the name of the code.  This won't work
    # on some python environments such as google appengine
    try:
        if tb is None:
            location = 'template'
        else:
            function = tb.tb_frame.f_code.co_name
            if function == 'root':
                location = 'top-level template code'
            elif function.startswith('block_'):
                location = 'block "%s"' % function[6:]
            else:
                location = 'template'
        code = code_type(0, code.co_nlocals, code.co_stacksize,
                         code.co_flags, code.co_code, code.co_consts,
                         code.co_names, code.co_varnames, filename,
                         location, code.co_firstlineno,
                         code.co_lnotab, (), ())
    except:
        pass

# execute the code and catch the new traceback
    try:
        exec(code, globals, locals)
    except:
        exc_info = sys.exc_info()
        new_tb = exc_info[2].tb_next

# return without this frame
    return exc_info[:2] + (new_tb,)

def _init_ugly_crap():
    """This function implements a few ugly things so that we can patch the
    traceback objects.  The function returned allows resetting `tb_next` on
    any python traceback object.  Do not attempt to use this on non cpython
    interpreters
    """
    import ctypes
    from types import TracebackType

# figure out side of _Py_ssize_t
    if hasattr(ctypes.pythonapi, 'Py_InitModule4_64'):
        _Py_ssize_t = ctypes.c_int64
    else:
        _Py_ssize_t = ctypes.c_int

# regular python
    class _PyObject(ctypes.Structure):
        pass
    _PyObject._fields_ = [
        ('ob_refcnt', _Py_ssize_t),
        ('ob_type', ctypes.POINTER(_PyObject))
    ]

# python with trace
    if hasattr(sys, 'getobjects'):
        class _PyObject(ctypes.Structure):
            pass
        _PyObject._fields_ = [
            ('_ob_next', ctypes.POINTER(_PyObject)),
            ('_ob_prev', ctypes.POINTER(_PyObject)),
            ('ob_refcnt', _Py_ssize_t),
            ('ob_type', ctypes.POINTER(_PyObject))
        ]

class _Traceback(_PyObject):
        pass
    _Traceback._fields_ = [
        ('tb_next', ctypes.POINTER(_Traceback)),
        ('tb_frame', ctypes.POINTER(_PyObject)),
        ('tb_lasti', ctypes.c_int),
        ('tb_lineno', ctypes.c_int)
    ]

def tb_set_next(tb, next):
        """Set the tb_next attribute of a traceback object."""
        if not (isinstance(tb, TracebackType) and
                (next is None or isinstance(next, TracebackType))):
            raise TypeError('tb_set_next arguments must be traceback objects')
        obj = _Traceback.from_address(id(tb))
        if tb.tb_next is not None:
            old = _Traceback.from_address(id(tb.tb_next))
            old.ob_refcnt -= 1
        if next is None:
            obj.tb_next = ctypes.POINTER(_Traceback)()
        else:
            next = _Traceback.from_address(id(next))
            next.ob_refcnt += 1
            obj.tb_next = ctypes.pointer(next)

return tb_set_next

# try to get a tb_set_next implementation if we don't have transparent
# proxies.
tb_set_next = None
if tproxy is None:
    try:
        tb_set_next = _init_ugly_crap()
    except:
        pass
    del _init_ugly_crap