diff options
Diffstat (limited to 'venv/lib/python3.11/site-packages/jinja2/debug.py')
| -rw-r--r-- | venv/lib/python3.11/site-packages/jinja2/debug.py | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/venv/lib/python3.11/site-packages/jinja2/debug.py b/venv/lib/python3.11/site-packages/jinja2/debug.py deleted file mode 100644 index 7ed7e92..0000000 --- a/venv/lib/python3.11/site-packages/jinja2/debug.py +++ /dev/null @@ -1,191 +0,0 @@ -import sys -import typing as t -from types import CodeType -from types import TracebackType - -from .exceptions import TemplateSyntaxError -from .utils import internal_code -from .utils import missing - -if t.TYPE_CHECKING: - from .runtime import Context - - -def rewrite_traceback_stack(source: t.Optional[str] = None) -> BaseException: - """Rewrite the current exception to replace any tracebacks from - within compiled template code with tracebacks that look like they - came from the template source. - - This must be called within an ``except`` block. - - :param source: For ``TemplateSyntaxError``, the original source if - known. - :return: The original exception with the rewritten traceback. - """ - _, exc_value, tb = sys.exc_info() - exc_value = t.cast(BaseException, exc_value) - tb = t.cast(TracebackType, tb) - - if isinstance(exc_value, TemplateSyntaxError) and not exc_value.translated: - exc_value.translated = True - exc_value.source = source - # Remove the old traceback, otherwise the frames from the - # compiler still show up. - exc_value.with_traceback(None) - # Outside of runtime, so the frame isn't executing template - # code, but it still needs to point at the template. - tb = fake_traceback( - exc_value, None, exc_value.filename or "<unknown>", exc_value.lineno - ) - else: - # Skip the frame for the render function. - tb = tb.tb_next - - stack = [] - - # Build the stack of traceback object, replacing any in template - # code with the source file and line information. - while tb is not None: - # Skip frames decorated with @internalcode. These are internal - # calls that aren't useful in template debugging output. - if tb.tb_frame.f_code in internal_code: - tb = tb.tb_next - continue - - template = tb.tb_frame.f_globals.get("__jinja_template__") - - if template is not None: - lineno = template.get_corresponding_lineno(tb.tb_lineno) - fake_tb = fake_traceback(exc_value, tb, template.filename, lineno) - stack.append(fake_tb) - else: - stack.append(tb) - - tb = tb.tb_next - - tb_next = None - - # Assign tb_next in reverse to avoid circular references. - for tb in reversed(stack): - tb.tb_next = tb_next - tb_next = tb - - return exc_value.with_traceback(tb_next) - - -def fake_traceback( # type: ignore - exc_value: BaseException, tb: t.Optional[TracebackType], filename: str, lineno: int -) -> TracebackType: - """Produce a new traceback object that looks like it came from the - template source instead of the compiled code. The filename, line - number, and location name will point to the template, and the local - variables will be the current template context. - - :param exc_value: The original exception to be re-raised to create - the new traceback. - :param tb: The original traceback to get the local variables and - code info from. - :param filename: The template filename. - :param lineno: The line number in the template source. - """ - if tb is not None: - # Replace the real locals with the context that would be - # available at that point in the template. - locals = get_template_locals(tb.tb_frame.f_locals) - locals.pop("__jinja_exception__", None) - else: - locals = {} - - globals = { - "__name__": filename, - "__file__": filename, - "__jinja_exception__": exc_value, - } - # Raise an exception at the correct line number. - code: CodeType = compile( - "\n" * (lineno - 1) + "raise __jinja_exception__", filename, "exec" - ) - - # Build a new code object that points to the template file and - # replaces the location with a block name. - location = "template" - - if tb is not None: - function = tb.tb_frame.f_code.co_name - - if function == "root": - location = "top-level template code" - elif function.startswith("block_"): - location = f"block {function[6:]!r}" - - if sys.version_info >= (3, 8): - code = code.replace(co_name=location) - else: - code = CodeType( - code.co_argcount, - code.co_kwonlyargcount, - code.co_nlocals, - code.co_stacksize, - code.co_flags, - code.co_code, - code.co_consts, - code.co_names, - code.co_varnames, - code.co_filename, - location, - code.co_firstlineno, - code.co_lnotab, - code.co_freevars, - code.co_cellvars, - ) - - # Execute the new code, which is guaranteed to raise, and return - # the new traceback without this frame. - try: - exec(code, globals, locals) - except BaseException: - return sys.exc_info()[2].tb_next # type: ignore - - -def get_template_locals(real_locals: t.Mapping[str, t.Any]) -> t.Dict[str, t.Any]: - """Based on the runtime locals, get the context that would be - available at that point in the template. - """ - # Start with the current template context. - ctx: "t.Optional[Context]" = real_locals.get("context") - - if ctx is not None: - data: t.Dict[str, t.Any] = ctx.get_all().copy() - else: - data = {} - - # Might be in a derived context that only sets local variables - # rather than pushing a context. Local variables follow the scheme - # l_depth_name. Find the highest-depth local that has a value for - # each name. - local_overrides: t.Dict[str, t.Tuple[int, t.Any]] = {} - - for name, value in real_locals.items(): - if not name.startswith("l_") or value is missing: - # Not a template variable, or no longer relevant. - continue - - try: - _, depth_str, name = name.split("_", 2) - depth = int(depth_str) - except ValueError: - continue - - cur_depth = local_overrides.get(name, (-1,))[0] - - if cur_depth < depth: - local_overrides[name] = (depth, value) - - # Modify the context with any derived context. - for name, (_, value) in local_overrides.items(): - if value is missing: - data.pop(name, None) - else: - data[name] = value - - return data |