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It provides a -non-XML syntax that supports inline expressions and an optional -sandboxed environment. -""" -from .bccache import BytecodeCache as BytecodeCache -from .bccache import FileSystemBytecodeCache as FileSystemBytecodeCache -from .bccache import MemcachedBytecodeCache as MemcachedBytecodeCache -from .environment import Environment as Environment -from .environment import Template as Template -from .exceptions import TemplateAssertionError as TemplateAssertionError -from .exceptions import TemplateError as TemplateError -from .exceptions import TemplateNotFound as TemplateNotFound -from .exceptions import TemplateRuntimeError as TemplateRuntimeError -from .exceptions import TemplatesNotFound as TemplatesNotFound -from .exceptions import TemplateSyntaxError as TemplateSyntaxError -from .exceptions import UndefinedError as UndefinedError -from .loaders import BaseLoader as BaseLoader -from .loaders import ChoiceLoader as ChoiceLoader -from .loaders import DictLoader as DictLoader -from .loaders import FileSystemLoader as FileSystemLoader -from .loaders import FunctionLoader as FunctionLoader -from .loaders import ModuleLoader as ModuleLoader -from .loaders import PackageLoader as PackageLoader -from .loaders import PrefixLoader as PrefixLoader -from .runtime import ChainableUndefined as ChainableUndefined -from .runtime import DebugUndefined as DebugUndefined -from .runtime import make_logging_undefined as make_logging_undefined -from .runtime import StrictUndefined as StrictUndefined -from .runtime import Undefined as Undefined -from .utils import clear_caches as clear_caches -from .utils import is_undefined as is_undefined -from .utils import pass_context as pass_context -from .utils import pass_environment as pass_environment -from .utils import pass_eval_context as pass_eval_context -from .utils import select_autoescape as select_autoescape - -__version__ = "3.1.3" diff --git 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a/venv/lib/python3.11/site-packages/jinja2/__pycache__/visitor.cpython-311.pyc b/venv/lib/python3.11/site-packages/jinja2/__pycache__/visitor.cpython-311.pyc deleted file mode 100644 index d0f0209..0000000 Binary files a/venv/lib/python3.11/site-packages/jinja2/__pycache__/visitor.cpython-311.pyc and /dev/null differ diff --git a/venv/lib/python3.11/site-packages/jinja2/_identifier.py b/venv/lib/python3.11/site-packages/jinja2/_identifier.py deleted file mode 100644 index 928c150..0000000 --- a/venv/lib/python3.11/site-packages/jinja2/_identifier.py +++ /dev/null @@ -1,6 +0,0 @@ -import re - -# generated by scripts/generate_identifier_pattern.py -pattern = re.compile( - r"[\w·̀-ͯ·҃-֑҇-ׇֽֿׁׂׅׄؐ-ًؚ-ٰٟۖ-ۜ۟-۪ۤۧۨ-ܑۭܰ-݊ަ-ް߫-߽߳ࠖ-࠙ࠛ-ࠣࠥ-ࠧࠩ-࡙࠭-࡛࣓-ࣣ࣡-ःऺ-़ा-ॏ॑-ॗॢॣঁ-ঃ়া-ৄেৈো-্ৗৢৣ৾ਁ-ਃ਼ਾ-ੂੇੈੋ-੍ੑੰੱੵઁ-ઃ઼ા-ૅે-ૉો-્ૢૣૺ-૿ଁ-ଃ଼ା-ୄେୈୋ-୍ୖୗୢୣஂா-ூெ-ைொ-்ௗఀ-ఄా-ౄె-ైొ-్ౕౖౢౣಁ-ಃ಼ಾ-ೄೆ-ೈೊ-್ೕೖೢೣഀ-ഃ഻഼ാ-ൄെ-ൈൊ-്ൗൢൣංඃ්ා-ුූෘ-ෟෲෳัิ-ฺ็-๎ັິ-ູົຼ່-ໍ༹༘༙༵༷༾༿ཱ-྄྆྇ྍ-ྗྙ-ྼ࿆ါ-ှၖ-ၙၞ-ၠၢ-ၤၧ-ၭၱ-ၴႂ-ႍႏႚ-ႝ፝-፟ᜒ-᜔ᜲ-᜴ᝒᝓᝲᝳ឴-៓៝᠋-᠍ᢅᢆᢩᤠ-ᤫᤰ-᤻ᨗ-ᨛᩕ-ᩞ᩠-᩿᩼᪰-᪽ᬀ-ᬄ᬴-᭄᭫-᭳ᮀ-ᮂᮡ-ᮭ᯦-᯳ᰤ-᰷᳐-᳔᳒-᳨᳭ᳲ-᳴᳷-᳹᷀-᷹᷻-᷿‿⁀⁔⃐-⃥⃜⃡-⃰℘℮⳯-⵿⳱ⷠ-〪ⷿ-゙゚〯꙯ꙴ-꙽ꚞꚟ꛰꛱ꠂ꠆ꠋꠣ-ꠧꢀꢁꢴ-ꣅ꣠-꣱ꣿꤦ-꤭ꥇ-꥓ꦀ-ꦃ꦳-꧀ꧥꨩ-ꨶꩃꩌꩍꩻ-ꩽꪰꪲ-ꪴꪷꪸꪾ꪿꫁ꫫ-ꫯꫵ꫶ꯣ-ꯪ꯬꯭ﬞ︀-️︠-︯︳︴﹍-﹏＿𐇽𐋠𐍶-𐍺𐨁-𐨃𐨅𐨆𐨌-𐨏𐨸-𐨿𐨺𐫦𐫥𐴤-𐽆𐴧-𐽐𑀀-𑀂𑀸-𑁆𑁿-𑂂𑂰-𑂺𑄀-𑄂𑄧-𑄴𑅅𑅆𑅳𑆀-𑆂𑆳-𑇀𑇉-𑇌𑈬-𑈷𑈾𑋟-𑋪𑌀-𑌃𑌻𑌼𑌾-𑍄𑍇𑍈𑍋-𑍍𑍗𑍢𑍣𑍦-𑍬𑍰-𑍴𑐵-𑑆𑑞𑒰-𑓃𑖯-𑖵𑖸-𑗀𑗜𑗝𑘰-𑙀𑚫-𑚷𑜝-𑜫𑠬-𑠺𑨁-𑨊𑨳-𑨹𑨻-𑨾𑩇𑩑-𑩛𑪊-𑪙𑰯-𑰶𑰸-𑰿𑲒-𑲧𑲩-𑲶𑴱-𑴶𑴺𑴼𑴽𑴿-𑵅𑵇𑶊-𑶎𑶐𑶑𑶓-𑶗𑻳-𑻶𖫰-𖫴𖬰-𖬶𖽑-𖽾𖾏-𖾒𛲝𛲞𝅥-𝅩𝅭-𝅲𝅻-𝆂𝆅-𝆋𝆪-𝆭𝉂-𝉄𝨀-𝨶𝨻-𝩬𝩵𝪄𝪛-𝪟𝪡-𝪯𞀀-𞀆𞀈-𞀘𞀛-𞀡𞀣𞀤𞀦-𞣐𞀪-𞣖𞥄-𞥊󠄀-󠇯]+" # noqa: B950 -) diff --git a/venv/lib/python3.11/site-packages/jinja2/async_utils.py b/venv/lib/python3.11/site-packages/jinja2/async_utils.py deleted file mode 100644 index 715d701..0000000 --- a/venv/lib/python3.11/site-packages/jinja2/async_utils.py +++ /dev/null @@ -1,84 +0,0 @@ -import inspect -import typing as t -from functools import WRAPPER_ASSIGNMENTS -from functools import wraps - -from .utils import _PassArg -from .utils import pass_eval_context - -V = t.TypeVar("V") - - -def async_variant(normal_func): # type: ignore - def decorator(async_func): # type: ignore - pass_arg = _PassArg.from_obj(normal_func) - need_eval_context = pass_arg is None - - if pass_arg is _PassArg.environment: - - def is_async(args: t.Any) -> bool: - return t.cast(bool, args[0].is_async) - - else: - - def is_async(args: t.Any) -> bool: - return t.cast(bool, args[0].environment.is_async) - - # Take the doc and annotations from the sync function, but the - # name from the async function. Pallets-Sphinx-Themes - # build_function_directive expects __wrapped__ to point to the - # sync function. - async_func_attrs = ("__module__", "__name__", "__qualname__") - normal_func_attrs = tuple(set(WRAPPER_ASSIGNMENTS).difference(async_func_attrs)) - - @wraps(normal_func, assigned=normal_func_attrs) - @wraps(async_func, assigned=async_func_attrs, updated=()) - def wrapper(*args, **kwargs): # type: ignore - b = is_async(args) - - if need_eval_context: - args = args[1:] - - if b: - return async_func(*args, **kwargs) - - return normal_func(*args, **kwargs) - - if need_eval_context: - wrapper = pass_eval_context(wrapper) - - wrapper.jinja_async_variant = True - return wrapper - - return decorator - - -_common_primitives = {int, float, bool, str, list, dict, tuple, type(None)} - - -async def auto_await(value: t.Union[t.Awaitable["V"], "V"]) -> "V": - # Avoid a costly call to isawaitable - if type(value) in _common_primitives: - return t.cast("V", value) - - if inspect.isawaitable(value): - return await t.cast("t.Awaitable[V]", value) - - return t.cast("V", value) - - -async def auto_aiter( - iterable: "t.Union[t.AsyncIterable[V], t.Iterable[V]]", -) -> "t.AsyncIterator[V]": - if hasattr(iterable, "__aiter__"): - async for item in t.cast("t.AsyncIterable[V]", iterable): - yield item - else: - for item in iterable: - yield item - - -async def auto_to_list( - value: "t.Union[t.AsyncIterable[V], t.Iterable[V]]", -) -> t.List["V"]: - return [x async for x in auto_aiter(value)] diff --git a/venv/lib/python3.11/site-packages/jinja2/bccache.py b/venv/lib/python3.11/site-packages/jinja2/bccache.py deleted file mode 100644 index d0ddf56..0000000 --- a/venv/lib/python3.11/site-packages/jinja2/bccache.py +++ /dev/null @@ -1,406 +0,0 @@ -"""The optional bytecode cache system. This is useful if you have very -complex template situations and the compilation of all those templates -slows down your application too much. - -Situations where this is useful are often forking web applications that -are initialized on the first request. -""" -import errno -import fnmatch -import marshal -import os -import pickle -import stat -import sys -import tempfile -import typing as t -from hashlib import sha1 -from io import BytesIO -from types import CodeType - -if t.TYPE_CHECKING: - import typing_extensions as te - from .environment import Environment - - class _MemcachedClient(te.Protocol): - def get(self, key: str) -> bytes: - ... - - def set(self, key: str, value: bytes, timeout: t.Optional[int] = None) -> None: - ... - - -bc_version = 5 -# Magic bytes to identify Jinja bytecode cache files. Contains the -# Python major and minor version to avoid loading incompatible bytecode -# if a project upgrades its Python version. -bc_magic = ( - b"j2" - + pickle.dumps(bc_version, 2) - + pickle.dumps((sys.version_info[0] << 24) | sys.version_info[1], 2) -) - - -class Bucket: - """Buckets are used to store the bytecode for one template. It's created - and initialized by the bytecode cache and passed to the loading functions. - - The buckets get an internal checksum from the cache assigned and use this - to automatically reject outdated cache material. Individual bytecode - cache subclasses don't have to care about cache invalidation. - """ - - def __init__(self, environment: "Environment", key: str, checksum: str) -> None: - self.environment = environment - self.key = key - self.checksum = checksum - self.reset() - - def reset(self) -> None: - """Resets the bucket (unloads the bytecode).""" - self.code: t.Optional[CodeType] = None - - def load_bytecode(self, f: t.BinaryIO) -> None: - """Loads bytecode from a file or file like object.""" - # make sure the magic header is correct - magic = f.read(len(bc_magic)) - if magic != bc_magic: - self.reset() - return - # the source code of the file changed, we need to reload - checksum = pickle.load(f) - if self.checksum != checksum: - self.reset() - return - # if marshal_load fails then we need to reload - try: - self.code = marshal.load(f) - except (EOFError, ValueError, TypeError): - self.reset() - return - - def write_bytecode(self, f: t.IO[bytes]) -> None: - """Dump the bytecode into the file or file like object passed.""" - if self.code is None: - raise TypeError("can't write empty bucket") - f.write(bc_magic) - pickle.dump(self.checksum, f, 2) - marshal.dump(self.code, f) - - def bytecode_from_string(self, string: bytes) -> None: - """Load bytecode from bytes.""" - self.load_bytecode(BytesIO(string)) - - def bytecode_to_string(self) -> bytes: - """Return the bytecode as bytes.""" - out = BytesIO() - self.write_bytecode(out) - return out.getvalue() - - -class BytecodeCache: - """To implement your own bytecode cache you have to subclass this class - and override :meth:`load_bytecode` and :meth:`dump_bytecode`. Both of - these methods are passed a :class:`~jinja2.bccache.Bucket`. - - A very basic bytecode cache that saves the bytecode on the file system:: - - from os import path - - class MyCache(BytecodeCache): - - def __init__(self, directory): - self.directory = directory - - def load_bytecode(self, bucket): - filename = path.join(self.directory, bucket.key) - if path.exists(filename): - with open(filename, 'rb') as f: - bucket.load_bytecode(f) - - def dump_bytecode(self, bucket): - filename = path.join(self.directory, bucket.key) - with open(filename, 'wb') as f: - bucket.write_bytecode(f) - - A more advanced version of a filesystem based bytecode cache is part of - Jinja. - """ - - def load_bytecode(self, bucket: Bucket) -> None: - """Subclasses have to override this method to load bytecode into a - bucket. If they are not able to find code in the cache for the - bucket, it must not do anything. - """ - raise NotImplementedError() - - def dump_bytecode(self, bucket: Bucket) -> None: - """Subclasses have to override this method to write the bytecode - from a bucket back to the cache. If it unable to do so it must not - fail silently but raise an exception. - """ - raise NotImplementedError() - - def clear(self) -> None: - """Clears the cache. This method is not used by Jinja but should be - implemented to allow applications to clear the bytecode cache used - by a particular environment. - """ - - def get_cache_key( - self, name: str, filename: t.Optional[t.Union[str]] = None - ) -> str: - """Returns the unique hash key for this template name.""" - hash = sha1(name.encode("utf-8")) - - if filename is not None: - hash.update(f"|{filename}".encode()) - - return hash.hexdigest() - - def get_source_checksum(self, source: str) -> str: - """Returns a checksum for the source.""" - return sha1(source.encode("utf-8")).hexdigest() - - def get_bucket( - self, - environment: "Environment", - name: str, - filename: t.Optional[str], - source: str, - ) -> Bucket: - """Return a cache bucket for the given template. All arguments are - mandatory but filename may be `None`. - """ - key = self.get_cache_key(name, filename) - checksum = self.get_source_checksum(source) - bucket = Bucket(environment, key, checksum) - self.load_bytecode(bucket) - return bucket - - def set_bucket(self, bucket: Bucket) -> None: - """Put the bucket into the cache.""" - self.dump_bytecode(bucket) - - -class FileSystemBytecodeCache(BytecodeCache): - """A bytecode cache that stores bytecode on the filesystem. It accepts - two arguments: The directory where the cache items are stored and a - pattern string that is used to build the filename. - - If no directory is specified a default cache directory is selected. On - Windows the user's temp directory is used, on UNIX systems a directory - is created for the user in the system temp directory. - - The pattern can be used to have multiple separate caches operate on the - same directory. The default pattern is ``'__jinja2_%s.cache'``. ``%s`` - is replaced with the cache key. - - >>> bcc = FileSystemBytecodeCache('/tmp/jinja_cache', '%s.cache') - - This bytecode cache supports clearing of the cache using the clear method. - """ - - def __init__( - self, directory: t.Optional[str] = None, pattern: str = "__jinja2_%s.cache" - ) -> None: - if directory is None: - directory = self._get_default_cache_dir() - self.directory = directory - self.pattern = pattern - - def _get_default_cache_dir(self) -> str: - def _unsafe_dir() -> "te.NoReturn": - raise RuntimeError( - "Cannot determine safe temp directory. You " - "need to explicitly provide one." - ) - - tmpdir = tempfile.gettempdir() - - # On windows the temporary directory is used specific unless - # explicitly forced otherwise. We can just use that. - if os.name == "nt": - return tmpdir - if not hasattr(os, "getuid"): - _unsafe_dir() - - dirname = f"_jinja2-cache-{os.getuid()}" - actual_dir = os.path.join(tmpdir, dirname) - - try: - os.mkdir(actual_dir, stat.S_IRWXU) - except OSError as e: - if e.errno != errno.EEXIST: - raise - try: - os.chmod(actual_dir, stat.S_IRWXU) - actual_dir_stat = os.lstat(actual_dir) - if ( - actual_dir_stat.st_uid != os.getuid() - or not stat.S_ISDIR(actual_dir_stat.st_mode) - or stat.S_IMODE(actual_dir_stat.st_mode) != stat.S_IRWXU - ): - _unsafe_dir() - except OSError as e: - if e.errno != errno.EEXIST: - raise - - actual_dir_stat = os.lstat(actual_dir) - if ( - actual_dir_stat.st_uid != os.getuid() - or not stat.S_ISDIR(actual_dir_stat.st_mode) - or stat.S_IMODE(actual_dir_stat.st_mode) != stat.S_IRWXU - ): - _unsafe_dir() - - return actual_dir - - def _get_cache_filename(self, bucket: Bucket) -> str: - return os.path.join(self.directory, self.pattern % (bucket.key,)) - - def load_bytecode(self, bucket: Bucket) -> None: - filename = self._get_cache_filename(bucket) - - # Don't test for existence before opening the file, since the - # file could disappear after the test before the open. - try: - f = open(filename, "rb") - except (FileNotFoundError, IsADirectoryError, PermissionError): - # PermissionError can occur on Windows when an operation is - # in progress, such as calling clear(). - return - - with f: - bucket.load_bytecode(f) - - def dump_bytecode(self, bucket: Bucket) -> None: - # Write to a temporary file, then rename to the real name after - # writing. This avoids another process reading the file before - # it is fully written. - name = self._get_cache_filename(bucket) - f = tempfile.NamedTemporaryFile( - mode="wb", - dir=os.path.dirname(name), - prefix=os.path.basename(name), - suffix=".tmp", - delete=False, - ) - - def remove_silent() -> None: - try: - os.remove(f.name) - except OSError: - # Another process may have called clear(). On Windows, - # another program may be holding the file open. - pass - - try: - with f: - bucket.write_bytecode(f) - except BaseException: - remove_silent() - raise - - try: - os.replace(f.name, name) - except OSError: - # Another process may have called clear(). On Windows, - # another program may be holding the file open. - remove_silent() - except BaseException: - remove_silent() - raise - - def clear(self) -> None: - # imported lazily here because google app-engine doesn't support - # write access on the file system and the function does not exist - # normally. - from os import remove - - files = fnmatch.filter(os.listdir(self.directory), self.pattern % ("*",)) - for filename in files: - try: - remove(os.path.join(self.directory, filename)) - except OSError: - pass - - -class MemcachedBytecodeCache(BytecodeCache): - """This class implements a bytecode cache that uses a memcache cache for - storing the information. It does not enforce a specific memcache library - (tummy's memcache or cmemcache) but will accept any class that provides - the minimal interface required. - - Libraries compatible with this class: - - - `cachelib `_ - - `python-memcached `_ - - (Unfortunately the django cache interface is not compatible because it - does not support storing binary data, only text. You can however pass - the underlying cache client to the bytecode cache which is available - as `django.core.cache.cache._client`.) - - The minimal interface for the client passed to the constructor is this: - - .. class:: MinimalClientInterface - - .. method:: set(key, value[, timeout]) - - Stores the bytecode in the cache. `value` is a string and - `timeout` the timeout of the key. If timeout is not provided - a default timeout or no timeout should be assumed, if it's - provided it's an integer with the number of seconds the cache - item should exist. - - .. method:: get(key) - - Returns the value for the cache key. If the item does not - exist in the cache the return value must be `None`. - - The other arguments to the constructor are the prefix for all keys that - is added before the actual cache key and the timeout for the bytecode in - the cache system. We recommend a high (or no) timeout. - - This bytecode cache does not support clearing of used items in the cache. - The clear method is a no-operation function. - - .. versionadded:: 2.7 - Added support for ignoring memcache errors through the - `ignore_memcache_errors` parameter. - """ - - def __init__( - self, - client: "_MemcachedClient", - prefix: str = "jinja2/bytecode/", - timeout: t.Optional[int] = None, - ignore_memcache_errors: bool = True, - ): - self.client = client - self.prefix = prefix - self.timeout = timeout - self.ignore_memcache_errors = ignore_memcache_errors - - def load_bytecode(self, bucket: Bucket) -> None: - try: - code = self.client.get(self.prefix + bucket.key) - except Exception: - if not self.ignore_memcache_errors: - raise - else: - bucket.bytecode_from_string(code) - - def dump_bytecode(self, bucket: Bucket) -> None: - key = self.prefix + bucket.key - value = bucket.bytecode_to_string() - - try: - if self.timeout is not None: - self.client.set(key, value, self.timeout) - else: - self.client.set(key, value) - except Exception: - if not self.ignore_memcache_errors: - raise diff --git a/venv/lib/python3.11/site-packages/jinja2/compiler.py b/venv/lib/python3.11/site-packages/jinja2/compiler.py deleted file mode 100644 index ff95c80..0000000 --- a/venv/lib/python3.11/site-packages/jinja2/compiler.py +++ /dev/null @@ -1,1956 +0,0 @@ -"""Compiles nodes from the parser into Python code.""" -import typing as t -from contextlib import contextmanager -from functools import update_wrapper -from io import StringIO -from itertools import chain -from keyword import iskeyword as is_python_keyword - -from markupsafe import escape -from markupsafe import Markup - -from . import nodes -from .exceptions import TemplateAssertionError -from .idtracking import Symbols -from .idtracking import VAR_LOAD_ALIAS -from .idtracking import VAR_LOAD_PARAMETER -from .idtracking import VAR_LOAD_RESOLVE -from .idtracking import VAR_LOAD_UNDEFINED -from .nodes import EvalContext -from .optimizer import Optimizer -from .utils import _PassArg -from .utils import concat -from .visitor import NodeVisitor - -if t.TYPE_CHECKING: - import typing_extensions as te - from .environment import Environment - -F = t.TypeVar("F", bound=t.Callable[..., t.Any]) - -operators = { - "eq": "==", - "ne": "!=", - "gt": ">", - "gteq": ">=", - "lt": "<", - "lteq": "<=", - "in": "in", - "notin": "not in", -} - - -def optimizeconst(f: F) -> F: - def new_func( - self: "CodeGenerator", node: nodes.Expr, frame: "Frame", **kwargs: t.Any - ) -> t.Any: - # Only optimize if the frame is not volatile - if self.optimizer is not None and not frame.eval_ctx.volatile: - new_node = self.optimizer.visit(node, frame.eval_ctx) - - if new_node != node: - return self.visit(new_node, frame) - - return f(self, node, frame, **kwargs) - - return update_wrapper(t.cast(F, new_func), f) - - -def _make_binop(op: str) -> t.Callable[["CodeGenerator", nodes.BinExpr, "Frame"], None]: - @optimizeconst - def visitor(self: "CodeGenerator", node: nodes.BinExpr, frame: Frame) -> None: - if ( - self.environment.sandboxed - and op in self.environment.intercepted_binops # type: ignore - ): - self.write(f"environment.call_binop(context, {op!r}, ") - self.visit(node.left, frame) - self.write(", ") - self.visit(node.right, frame) - else: - self.write("(") - self.visit(node.left, frame) - self.write(f" {op} ") - self.visit(node.right, frame) - - self.write(")") - - return visitor - - -def _make_unop( - op: str, -) -> t.Callable[["CodeGenerator", nodes.UnaryExpr, "Frame"], None]: - @optimizeconst - def visitor(self: "CodeGenerator", node: nodes.UnaryExpr, frame: Frame) -> None: - if ( - self.environment.sandboxed - and op in self.environment.intercepted_unops # type: ignore - ): - self.write(f"environment.call_unop(context, {op!r}, ") - self.visit(node.node, frame) - else: - self.write("(" + op) - self.visit(node.node, frame) - - self.write(")") - - return visitor - - -def generate( - node: nodes.Template, - environment: "Environment", - name: t.Optional[str], - filename: t.Optional[str], - stream: t.Optional[t.TextIO] = None, - defer_init: bool = False, - optimized: bool = True, -) -> t.Optional[str]: - """Generate the python source for a node tree.""" - if not isinstance(node, nodes.Template): - raise TypeError("Can't compile non template nodes") - - generator = environment.code_generator_class( - environment, name, filename, stream, defer_init, optimized - ) - generator.visit(node) - - if stream is None: - return generator.stream.getvalue() # type: ignore - - return None - - -def has_safe_repr(value: t.Any) -> bool: - """Does the node have a safe representation?""" - if value is None or value is NotImplemented or value is Ellipsis: - return True - - if type(value) in {bool, int, float, complex, range, str, Markup}: - return True - - if type(value) in {tuple, list, set, frozenset}: - return all(has_safe_repr(v) for v in value) - - if type(value) is dict: - return all(has_safe_repr(k) and has_safe_repr(v) for k, v in value.items()) - - return False - - -def find_undeclared( - nodes: t.Iterable[nodes.Node], names: t.Iterable[str] -) -> t.Set[str]: - """Check if the names passed are accessed undeclared. The return value - is a set of all the undeclared names from the sequence of names found. - """ - visitor = UndeclaredNameVisitor(names) - try: - for node in nodes: - visitor.visit(node) - except VisitorExit: - pass - return visitor.undeclared - - -class MacroRef: - def __init__(self, node: t.Union[nodes.Macro, nodes.CallBlock]) -> None: - self.node = node - self.accesses_caller = False - self.accesses_kwargs = False - self.accesses_varargs = False - - -class Frame: - """Holds compile time information for us.""" - - def __init__( - self, - eval_ctx: EvalContext, - parent: t.Optional["Frame"] = None, - level: t.Optional[int] = None, - ) -> None: - self.eval_ctx = eval_ctx - - # the parent of this frame - self.parent = parent - - if parent is None: - self.symbols = Symbols(level=level) - - # in some dynamic inheritance situations the compiler needs to add - # write tests around output statements. - self.require_output_check = False - - # inside some tags we are using a buffer rather than yield statements. - # this for example affects {% filter %} or {% macro %}. If a frame - # is buffered this variable points to the name of the list used as - # buffer. - self.buffer: t.Optional[str] = None - - # the name of the block we're in, otherwise None. - self.block: t.Optional[str] = None - - else: - self.symbols = Symbols(parent.symbols, level=level) - self.require_output_check = parent.require_output_check - self.buffer = parent.buffer - self.block = parent.block - - # a toplevel frame is the root + soft frames such as if conditions. - self.toplevel = False - - # the root frame is basically just the outermost frame, so no if - # conditions. This information is used to optimize inheritance - # situations. - self.rootlevel = False - - # variables set inside of loops and blocks should not affect outer frames, - # but they still needs to be kept track of as part of the active context. - self.loop_frame = False - self.block_frame = False - - # track whether the frame is being used in an if-statement or conditional - # expression as it determines which errors should be raised during runtime - # or compile time. - self.soft_frame = False - - def copy(self) -> "Frame": - """Create a copy of the current one.""" - rv = object.__new__(self.__class__) - rv.__dict__.update(self.__dict__) - rv.symbols = self.symbols.copy() - return rv - - def inner(self, isolated: bool = False) -> "Frame": - """Return an inner frame.""" - if isolated: - return Frame(self.eval_ctx, level=self.symbols.level + 1) - return Frame(self.eval_ctx, self) - - def soft(self) -> "Frame": - """Return a soft frame. A soft frame may not be modified as - standalone thing as it shares the resources with the frame it - was created of, but it's not a rootlevel frame any longer. - - This is only used to implement if-statements and conditional - expressions. - """ - rv = self.copy() - rv.rootlevel = False - rv.soft_frame = True - return rv - - __copy__ = copy - - -class VisitorExit(RuntimeError): - """Exception used by the `UndeclaredNameVisitor` to signal a stop.""" - - -class DependencyFinderVisitor(NodeVisitor): - """A visitor that collects filter and test calls.""" - - def __init__(self) -> None: - self.filters: t.Set[str] = set() - self.tests: t.Set[str] = set() - - def visit_Filter(self, node: nodes.Filter) -> None: - self.generic_visit(node) - self.filters.add(node.name) - - def visit_Test(self, node: nodes.Test) -> None: - self.generic_visit(node) - self.tests.add(node.name) - - def visit_Block(self, node: nodes.Block) -> None: - """Stop visiting at blocks.""" - - -class UndeclaredNameVisitor(NodeVisitor): - """A visitor that checks if a name is accessed without being - declared. This is different from the frame visitor as it will - not stop at closure frames. - """ - - def __init__(self, names: t.Iterable[str]) -> None: - self.names = set(names) - self.undeclared: t.Set[str] = set() - - def visit_Name(self, node: nodes.Name) -> None: - if node.ctx == "load" and node.name in self.names: - self.undeclared.add(node.name) - if self.undeclared == self.names: - raise VisitorExit() - else: - self.names.discard(node.name) - - def visit_Block(self, node: nodes.Block) -> None: - """Stop visiting a blocks.""" - - -class CompilerExit(Exception): - """Raised if the compiler encountered a situation where it just - doesn't make sense to further process the code. Any block that - raises such an exception is not further processed. - """ - - -class CodeGenerator(NodeVisitor): - def __init__( - self, - environment: "Environment", - name: t.Optional[str], - filename: t.Optional[str], - stream: t.Optional[t.TextIO] = None, - defer_init: bool = False, - optimized: bool = True, - ) -> None: - if stream is None: - stream = StringIO() - self.environment = environment - self.name = name - self.filename = filename - self.stream = stream - self.created_block_context = False - self.defer_init = defer_init - self.optimizer: t.Optional[Optimizer] = None - - if optimized: - self.optimizer = Optimizer(environment) - - # aliases for imports - self.import_aliases: t.Dict[str, str] = {} - - # a registry for all blocks. Because blocks are moved out - # into the global python scope they are registered here - self.blocks: t.Dict[str, nodes.Block] = {} - - # the number of extends statements so far - self.extends_so_far = 0 - - # some templates have a rootlevel extends. In this case we - # can safely assume that we're a child template and do some - # more optimizations. - self.has_known_extends = False - - # the current line number - self.code_lineno = 1 - - # registry of all filters and tests (global, not block local) - self.tests: t.Dict[str, str] = {} - self.filters: t.Dict[str, str] = {} - - # the debug information - self.debug_info: t.List[t.Tuple[int, int]] = [] - self._write_debug_info: t.Optional[int] = None - - # the number of new lines before the next write() - self._new_lines = 0 - - # the line number of the last written statement - self._last_line = 0 - - # true if nothing was written so far. - self._first_write = True - - # used by the `temporary_identifier` method to get new - # unique, temporary identifier - self._last_identifier = 0 - - # the current indentation - self._indentation = 0 - - # Tracks toplevel assignments - self._assign_stack: t.List[t.Set[str]] = [] - - # Tracks parameter definition blocks - self._param_def_block: t.List[t.Set[str]] = [] - - # Tracks the current context. - self._context_reference_stack = ["context"] - - @property - def optimized(self) -> bool: - return self.optimizer is not None - - # -- Various compilation helpers - - def fail(self, msg: str, lineno: int) -> "te.NoReturn": - """Fail with a :exc:`TemplateAssertionError`.""" - raise TemplateAssertionError(msg, lineno, self.name, self.filename) - - def temporary_identifier(self) -> str: - """Get a new unique identifier.""" - self._last_identifier += 1 - return f"t_{self._last_identifier}" - - def buffer(self, frame: Frame) -> None: - """Enable buffering for the frame from that point onwards.""" - frame.buffer = self.temporary_identifier() - self.writeline(f"{frame.buffer} = []") - - def return_buffer_contents( - self, frame: Frame, force_unescaped: bool = False - ) -> None: - """Return the buffer contents of the frame.""" - if not force_unescaped: - if frame.eval_ctx.volatile: - self.writeline("if context.eval_ctx.autoescape:") - self.indent() - self.writeline(f"return Markup(concat({frame.buffer}))") - self.outdent() - self.writeline("else:") - self.indent() - self.writeline(f"return concat({frame.buffer})") - self.outdent() - return - elif frame.eval_ctx.autoescape: - self.writeline(f"return Markup(concat({frame.buffer}))") - return - self.writeline(f"return concat({frame.buffer})") - - def indent(self) -> None: - """Indent by one.""" - self._indentation += 1 - - def outdent(self, step: int = 1) -> None: - """Outdent by step.""" - self._indentation -= step - - def start_write(self, frame: Frame, node: t.Optional[nodes.Node] = None) -> None: - """Yield or write into the frame buffer.""" - if frame.buffer is None: - self.writeline("yield ", node) - else: - self.writeline(f"{frame.buffer}.append(", node) - - def end_write(self, frame: Frame) -> None: - """End the writing process started by `start_write`.""" - if frame.buffer is not None: - self.write(")") - - def simple_write( - self, s: str, frame: Frame, node: t.Optional[nodes.Node] = None - ) -> None: - """Simple shortcut for start_write + write + end_write.""" - self.start_write(frame, node) - self.write(s) - self.end_write(frame) - - def blockvisit(self, nodes: t.Iterable[nodes.Node], frame: Frame) -> None: - """Visit a list of nodes as block in a frame. If the current frame - is no buffer a dummy ``if 0: yield None`` is written automatically. - """ - try: - self.writeline("pass") - for node in nodes: - self.visit(node, frame) - except CompilerExit: - pass - - def write(self, x: str) -> None: - """Write a string into the output stream.""" - if self._new_lines: - if not self._first_write: - self.stream.write("\n" * self._new_lines) - self.code_lineno += self._new_lines - if self._write_debug_info is not None: - self.debug_info.append((self._write_debug_info, self.code_lineno)) - self._write_debug_info = None - self._first_write = False - self.stream.write(" " * self._indentation) - self._new_lines = 0 - self.stream.write(x) - - def writeline( - self, x: str, node: t.Optional[nodes.Node] = None, extra: int = 0 - ) -> None: - """Combination of newline and write.""" - self.newline(node, extra) - self.write(x) - - def newline(self, node: t.Optional[nodes.Node] = None, extra: int = 0) -> None: - """Add one or more newlines before the next write.""" - self._new_lines = max(self._new_lines, 1 + extra) - if node is not None and node.lineno != self._last_line: - self._write_debug_info = node.lineno - self._last_line = node.lineno - - def signature( - self, - node: t.Union[nodes.Call, nodes.Filter, nodes.Test], - frame: Frame, - extra_kwargs: t.Optional[t.Mapping[str, t.Any]] = None, - ) -> None: - """Writes a function call to the stream for the current node. - A leading comma is added automatically. The extra keyword - arguments may not include python keywords otherwise a syntax - error could occur. The extra keyword arguments should be given - as python dict. - """ - # if any of the given keyword arguments is a python keyword - # we have to make sure that no invalid call is created. - kwarg_workaround = any( - is_python_keyword(t.cast(str, k)) - for k in chain((x.key for x in node.kwargs), extra_kwargs or ()) - ) - - for arg in node.args: - self.write(", ") - self.visit(arg, frame) - - if not kwarg_workaround: - for kwarg in node.kwargs: - self.write(", ") - self.visit(kwarg, frame) - if extra_kwargs is not None: - for key, value in extra_kwargs.items(): - self.write(f", {key}={value}") - if node.dyn_args: - self.write(", *") - self.visit(node.dyn_args, frame) - - if kwarg_workaround: - if node.dyn_kwargs is not None: - self.write(", **dict({") - else: - self.write(", **{") - for kwarg in node.kwargs: - self.write(f"{kwarg.key!r}: ") - self.visit(kwarg.value, frame) - self.write(", ") - if extra_kwargs is not None: - for key, value in extra_kwargs.items(): - self.write(f"{key!r}: {value}, ") - if node.dyn_kwargs is not None: - self.write("}, **") - self.visit(node.dyn_kwargs, frame) - self.write(")") - else: - self.write("}") - - elif node.dyn_kwargs is not None: - self.write(", **") - self.visit(node.dyn_kwargs, frame) - - def pull_dependencies(self, nodes: t.Iterable[nodes.Node]) -> None: - """Find all filter and test names used in the template and - assign them to variables in the compiled namespace. Checking - that the names are registered with the environment is done when - compiling the Filter and Test nodes. If the node is in an If or - CondExpr node, the check is done at runtime instead. - - .. versionchanged:: 3.0 - Filters and tests in If and CondExpr nodes are checked at - runtime instead of compile time. - """ - visitor = DependencyFinderVisitor() - - for node in nodes: - visitor.visit(node) - - for id_map, names, dependency in (self.filters, visitor.filters, "filters"), ( - self.tests, - visitor.tests, - "tests", - ): - for name in sorted(names): - if name not in id_map: - id_map[name] = self.temporary_identifier() - - # add check during runtime that dependencies used inside of executed - # blocks are defined, as this step may be skipped during compile time - self.writeline("try:") - self.indent() - self.writeline(f"{id_map[name]} = environment.{dependency}[{name!r}]") - self.outdent() - self.writeline("except KeyError:") - self.indent() - self.writeline("@internalcode") - self.writeline(f"def {id_map[name]}(*unused):") - self.indent() - self.writeline( - f'raise TemplateRuntimeError("No {dependency[:-1]}' - f' named {name!r} found.")' - ) - self.outdent() - self.outdent() - - def enter_frame(self, frame: Frame) -> None: - undefs = [] - for target, (action, param) in frame.symbols.loads.items(): - if action == VAR_LOAD_PARAMETER: - pass - elif action == VAR_LOAD_RESOLVE: - self.writeline(f"{target} = {self.get_resolve_func()}({param!r})") - elif action == VAR_LOAD_ALIAS: - self.writeline(f"{target} = {param}") - elif action == VAR_LOAD_UNDEFINED: - undefs.append(target) - else: - raise NotImplementedError("unknown load instruction") - if undefs: - self.writeline(f"{' = '.join(undefs)} = missing") - - def leave_frame(self, frame: Frame, with_python_scope: bool = False) -> None: - if not with_python_scope: - undefs = [] - for target in frame.symbols.loads: - undefs.append(target) - if undefs: - self.writeline(f"{' = '.join(undefs)} = missing") - - def choose_async(self, async_value: str = "async ", sync_value: str = "") -> str: - return async_value if self.environment.is_async else sync_value - - def func(self, name: str) -> str: - return f"{self.choose_async()}def {name}" - - def macro_body( - self, node: t.Union[nodes.Macro, nodes.CallBlock], frame: Frame - ) -> t.Tuple[Frame, MacroRef]: - """Dump the function def of a macro or call block.""" - frame = frame.inner() - frame.symbols.analyze_node(node) - macro_ref = MacroRef(node) - - explicit_caller = None - skip_special_params = set() - args = [] - - for idx, arg in enumerate(node.args): - if arg.name == "caller": - explicit_caller = idx - if arg.name in ("kwargs", "varargs"): - skip_special_params.add(arg.name) - args.append(frame.symbols.ref(arg.name)) - - undeclared = find_undeclared(node.body, ("caller", "kwargs", "varargs")) - - if "caller" in undeclared: - # In older Jinja versions there was a bug that allowed caller - # to retain the special behavior even if it was mentioned in - # the argument list. However thankfully this was only really - # working if it was the last argument. So we are explicitly - # checking this now and error out if it is anywhere else in - # the argument list. - if explicit_caller is not None: - try: - node.defaults[explicit_caller - len(node.args)] - except IndexError: - self.fail( - "When defining macros or call blocks the " - 'special "caller" argument must be omitted ' - "or be given a default.", - node.lineno, - ) - else: - args.append(frame.symbols.declare_parameter("caller")) - macro_ref.accesses_caller = True - if "kwargs" in undeclared and "kwargs" not in skip_special_params: - args.append(frame.symbols.declare_parameter("kwargs")) - macro_ref.accesses_kwargs = True - if "varargs" in undeclared and "varargs" not in skip_special_params: - args.append(frame.symbols.declare_parameter("varargs")) - macro_ref.accesses_varargs = True - - # macros are delayed, they never require output checks - frame.require_output_check = False - frame.symbols.analyze_node(node) - self.writeline(f"{self.func('macro')}({', '.join(args)}):", node) - self.indent() - - self.buffer(frame) - self.enter_frame(frame) - - self.push_parameter_definitions(frame) - for idx, arg in enumerate(node.args): - ref = frame.symbols.ref(arg.name) - self.writeline(f"if {ref} is missing:") - self.indent() - try: - default = node.defaults[idx - len(node.args)] - except IndexError: - self.writeline( - f'{ref} = undefined("parameter {arg.name!r} was not provided",' - f" name={arg.name!r})" - ) - else: - self.writeline(f"{ref} = ") - self.visit(default, frame) - self.mark_parameter_stored(ref) - self.outdent() - self.pop_parameter_definitions() - - self.blockvisit(node.body, frame) - self.return_buffer_contents(frame, force_unescaped=True) - self.leave_frame(frame, with_python_scope=True) - self.outdent() - - return frame, macro_ref - - def macro_def(self, macro_ref: MacroRef, frame: Frame) -> None: - """Dump the macro definition for the def created by macro_body.""" - arg_tuple = ", ".join(repr(x.name) for x in macro_ref.node.args) - name = getattr(macro_ref.node, "name", None) - if len(macro_ref.node.args) == 1: - arg_tuple += "," - self.write( - f"Macro(environment, macro, {name!r}, ({arg_tuple})," - f" {macro_ref.accesses_kwargs!r}, {macro_ref.accesses_varargs!r}," - f" {macro_ref.accesses_caller!r}, context.eval_ctx.autoescape)" - ) - - def position(self, node: nodes.Node) -> str: - """Return a human readable position for the node.""" - rv = f"line {node.lineno}" - if self.name is not None: - rv = f"{rv} in {self.name!r}" - return rv - - def dump_local_context(self, frame: Frame) -> str: - items_kv = ", ".join( - f"{name!r}: {target}" - for name, target in frame.symbols.dump_stores().items() - ) - return f"{{{items_kv}}}" - - def write_commons(self) -> None: - """Writes a common preamble that is used by root and block functions. - Primarily this sets up common local helpers and enforces a generator - through a dead branch. - """ - self.writeline("resolve = context.resolve_or_missing") - self.writeline("undefined = environment.undefined") - self.writeline("concat = environment.concat") - # always use the standard Undefined class for the implicit else of - # conditional expressions - self.writeline("cond_expr_undefined = Undefined") - self.writeline("if 0: yield None") - - def push_parameter_definitions(self, frame: Frame) -> None: - """Pushes all parameter targets from the given frame into a local - stack that permits tracking of yet to be assigned parameters. In - particular this enables the optimization from `visit_Name` to skip - undefined expressions for parameters in macros as macros can reference - otherwise unbound parameters. - """ - self._param_def_block.append(frame.symbols.dump_param_targets()) - - def pop_parameter_definitions(self) -> None: - """Pops the current parameter definitions set.""" - self._param_def_block.pop() - - def mark_parameter_stored(self, target: str) -> None: - """Marks a parameter in the current parameter definitions as stored. - This will skip the enforced undefined checks. - """ - if self._param_def_block: - self._param_def_block[-1].discard(target) - - def push_context_reference(self, target: str) -> None: - self._context_reference_stack.append(target) - - def pop_context_reference(self) -> None: - self._context_reference_stack.pop() - - def get_context_ref(self) -> str: - return self._context_reference_stack[-1] - - def get_resolve_func(self) -> str: - target = self._context_reference_stack[-1] - if target == "context": - return "resolve" - return f"{target}.resolve" - - def derive_context(self, frame: Frame) -> str: - return f"{self.get_context_ref()}.derived({self.dump_local_context(frame)})" - - def parameter_is_undeclared(self, target: str) -> bool: - """Checks if a given target is an undeclared parameter.""" - if not self._param_def_block: - return False - return target in self._param_def_block[-1] - - def push_assign_tracking(self) -> None: - """Pushes a new layer for assignment tracking.""" - self._assign_stack.append(set()) - - def pop_assign_tracking(self, frame: Frame) -> None: - """Pops the topmost level for assignment tracking and updates the - context variables if necessary. - """ - vars = self._assign_stack.pop() - if ( - not frame.block_frame - and not frame.loop_frame - and not frame.toplevel - or not vars - ): - return - public_names = [x for x in vars if x[:1] != "_"] - if len(vars) == 1: - name = next(iter(vars)) - ref = frame.symbols.ref(name) - if frame.loop_frame: - self.writeline(f"_loop_vars[{name!r}] = {ref}") - return - if frame.block_frame: - self.writeline(f"_block_vars[{name!r}] = {ref}") - return - self.writeline(f"context.vars[{name!r}] = {ref}") - else: - if frame.loop_frame: - self.writeline("_loop_vars.update({") - elif frame.block_frame: - self.writeline("_block_vars.update({") - else: - self.writeline("context.vars.update({") - for idx, name in enumerate(vars): - if idx: - self.write(", ") - ref = frame.symbols.ref(name) - self.write(f"{name!r}: {ref}") - self.write("})") - if not frame.block_frame and not frame.loop_frame and public_names: - if len(public_names) == 1: - self.writeline(f"context.exported_vars.add({public_names[0]!r})") - else: - names_str = ", ".join(map(repr, public_names)) - self.writeline(f"context.exported_vars.update(({names_str}))") - - # -- Statement Visitors - - def visit_Template( - self, node: nodes.Template, frame: t.Optional[Frame] = None - ) -> None: - assert frame is None, "no root frame allowed" - eval_ctx = EvalContext(self.environment, self.name) - - from .runtime import exported, async_exported - - if self.environment.is_async: - exported_names = sorted(exported + async_exported) - else: - exported_names = sorted(exported) - - self.writeline("from jinja2.runtime import " + ", ".join(exported_names)) - - # if we want a deferred initialization we cannot move the - # environment into a local name - envenv = "" if self.defer_init else ", environment=environment" - - # do we have an extends tag at all? If not, we can save some - # overhead by just not processing any inheritance code. - have_extends = node.find(nodes.Extends) is not None - - # find all blocks - for block in node.find_all(nodes.Block): - if block.name in self.blocks: - self.fail(f"block {block.name!r} defined twice", block.lineno) - self.blocks[block.name] = block - - # find all imports and import them - for import_ in node.find_all(nodes.ImportedName): - if import_.importname not in self.import_aliases: - imp = import_.importname - self.import_aliases[imp] = alias = self.temporary_identifier() - if "." in imp: - module, obj = imp.rsplit(".", 1) - self.writeline(f"from {module} import {obj} as {alias}") - else: - self.writeline(f"import {imp} as {alias}") - - # add the load name - self.writeline(f"name = {self.name!r}") - - # generate the root render function. - self.writeline( - f"{self.func('root')}(context, missing=missing{envenv}):", extra=1 - ) - self.indent() - self.write_commons() - - # process the root - frame = Frame(eval_ctx) - if "self" in find_undeclared(node.body, ("self",)): - ref = frame.symbols.declare_parameter("self") - self.writeline(f"{ref} = TemplateReference(context)") - frame.symbols.analyze_node(node) - frame.toplevel = frame.rootlevel = True - frame.require_output_check = have_extends and not self.has_known_extends - if have_extends: - self.writeline("parent_template = None") - self.enter_frame(frame) - self.pull_dependencies(node.body) - self.blockvisit(node.body, frame) - self.leave_frame(frame, with_python_scope=True) - self.outdent() - - # make sure that the parent root is called. - if have_extends: - if not self.has_known_extends: - self.indent() - self.writeline("if parent_template is not None:") - self.indent() - if not self.environment.is_async: - self.writeline("yield from parent_template.root_render_func(context)") - else: - self.writeline( - "async for event in parent_template.root_render_func(context):" - ) - self.indent() - self.writeline("yield event") - self.outdent() - self.outdent(1 + (not self.has_known_extends)) - - # at this point we now have the blocks collected and can visit them too. - for name, block in self.blocks.items(): - self.writeline( - f"{self.func('block_' + name)}(context, missing=missing{envenv}):", - block, - 1, - ) - self.indent() - self.write_commons() - # It's important that we do not make this frame a child of the - # toplevel template. This would cause a variety of - # interesting issues with identifier tracking. - block_frame = Frame(eval_ctx) - block_frame.block_frame = True - undeclared = find_undeclared(block.body, ("self", "super")) - if "self" in undeclared: - ref = block_frame.symbols.declare_parameter("self") - self.writeline(f"{ref} = TemplateReference(context)") - if "super" in undeclared: - ref = block_frame.symbols.declare_parameter("super") - self.writeline(f"{ref} = context.super({name!r}, block_{name})") - block_frame.symbols.analyze_node(block) - block_frame.block = name - self.writeline("_block_vars = {}") - self.enter_frame(block_frame) - self.pull_dependencies(block.body) - self.blockvisit(block.body, block_frame) - self.leave_frame(block_frame, with_python_scope=True) - self.outdent() - - blocks_kv_str = ", ".join(f"{x!r}: block_{x}" for x in self.blocks) - self.writeline(f"blocks = {{{blocks_kv_str}}}", extra=1) - debug_kv_str = "&".join(f"{k}={v}" for k, v in self.debug_info) - self.writeline(f"debug_info = {debug_kv_str!r}") - - def visit_Block(self, node: nodes.Block, frame: Frame) -> None: - """Call a block and register it for the template.""" - level = 0 - if frame.toplevel: - # if we know that we are a child template, there is no need to - # check if we are one - if self.has_known_extends: - return - if self.extends_so_far > 0: - self.writeline("if parent_template is None:") - self.indent() - level += 1 - - if node.scoped: - context = self.derive_context(frame) - else: - context = self.get_context_ref() - - if node.required: - self.writeline(f"if len(context.blocks[{node.name!r}]) <= 1:", node) - self.indent() - self.writeline( - f'raise TemplateRuntimeError("Required block {node.name!r} not found")', - node, - ) - self.outdent() - - if not self.environment.is_async and frame.buffer is None: - self.writeline( - f"yield from context.blocks[{node.name!r}][0]({context})", node - ) - else: - self.writeline( - f"{self.choose_async()}for event in" - f" context.blocks[{node.name!r}][0]({context}):", - node, - ) - self.indent() - self.simple_write("event", frame) - self.outdent() - - self.outdent(level) - - def visit_Extends(self, node: nodes.Extends, frame: Frame) -> None: - """Calls the extender.""" - if not frame.toplevel: - self.fail("cannot use extend from a non top-level scope", node.lineno) - - # if the number of extends statements in general is zero so - # far, we don't have to add a check if something extended - # the template before this one. - if self.extends_so_far > 0: - # if we have a known extends we just add a template runtime - # error into the generated code. We could catch that at compile - # time too, but i welcome it not to confuse users by throwing the - # same error at different times just "because we can". - if not self.has_known_extends: - self.writeline("if parent_template is not None:") - self.indent() - self.writeline('raise TemplateRuntimeError("extended multiple times")') - - # if we have a known extends already we don't need that code here - # as we know that the template execution will end here. - if self.has_known_extends: - raise CompilerExit() - else: - self.outdent() - - self.writeline("parent_template = environment.get_template(", node) - self.visit(node.template, frame) - self.write(f", {self.name!r})") - self.writeline("for name, parent_block in parent_template.blocks.items():") - self.indent() - self.writeline("context.blocks.setdefault(name, []).append(parent_block)") - self.outdent() - - # if this extends statement was in the root level we can take - # advantage of that information and simplify the generated code - # in the top level from this point onwards - if frame.rootlevel: - self.has_known_extends = True - - # and now we have one more - self.extends_so_far += 1 - - def visit_Include(self, node: nodes.Include, frame: Frame) -> None: - """Handles includes.""" - if node.ignore_missing: - self.writeline("try:") - self.indent() - - func_name = "get_or_select_template" - if isinstance(node.template, nodes.Const): - if isinstance(node.template.value, str): - func_name = "get_template" - elif isinstance(node.template.value, (tuple, list)): - func_name = "select_template" - elif isinstance(node.template, (nodes.Tuple, nodes.List)): - func_name = "select_template" - - self.writeline(f"template = environment.{func_name}(", node) - self.visit(node.template, frame) - self.write(f", {self.name!r})") - if node.ignore_missing: - self.outdent() - self.writeline("except TemplateNotFound:") - self.indent() - self.writeline("pass") - self.outdent() - self.writeline("else:") - self.indent() - - skip_event_yield = False - if node.with_context: - self.writeline( - f"{self.choose_async()}for event in template.root_render_func(" - "template.new_context(context.get_all(), True," - f" {self.dump_local_context(frame)})):" - ) - elif self.environment.is_async: - self.writeline( - "for event in (await template._get_default_module_async())" - "._body_stream:" - ) - else: - self.writeline("yield from template._get_default_module()._body_stream") - skip_event_yield = True - - if not skip_event_yield: - self.indent() - self.simple_write("event", frame) - self.outdent() - - if node.ignore_missing: - self.outdent() - - def _import_common( - self, node: t.Union[nodes.Import, nodes.FromImport], frame: Frame - ) -> None: - self.write(f"{self.choose_async('await ')}environment.get_template(") - self.visit(node.template, frame) - self.write(f", {self.name!r}).") - - if node.with_context: - f_name = f"make_module{self.choose_async('_async')}" - self.write( - f"{f_name}(context.get_all(), True, {self.dump_local_context(frame)})" - ) - else: - self.write(f"_get_default_module{self.choose_async('_async')}(context)") - - def visit_Import(self, node: nodes.Import, frame: Frame) -> None: - """Visit regular imports.""" - self.writeline(f"{frame.symbols.ref(node.target)} = ", node) - if frame.toplevel: - self.write(f"context.vars[{node.target!r}] = ") - - self._import_common(node, frame) - - if frame.toplevel and not node.target.startswith("_"): - self.writeline(f"context.exported_vars.discard({node.target!r})") - - def visit_FromImport(self, node: nodes.FromImport, frame: Frame) -> None: - """Visit named imports.""" - self.newline(node) - self.write("included_template = ") - self._import_common(node, frame) - var_names = [] - discarded_names = [] - for name in node.names: - if isinstance(name, tuple): - name, alias = name - else: - alias = name - self.writeline( - f"{frame.symbols.ref(alias)} =" - f" getattr(included_template, {name!r}, missing)" - ) - self.writeline(f"if {frame.symbols.ref(alias)} is missing:") - self.indent() - message = ( - "the template {included_template.__name__!r}" - f" (imported on {self.position(node)})" - f" does not export the requested name {name!r}" - ) - self.writeline( - f"{frame.symbols.ref(alias)} = undefined(f{message!r}, name={name!r})" - ) - self.outdent() - if frame.toplevel: - var_names.append(alias) - if not alias.startswith("_"): - discarded_names.append(alias) - - if var_names: - if len(var_names) == 1: - name = var_names[0] - self.writeline(f"context.vars[{name!r}] = {frame.symbols.ref(name)}") - else: - names_kv = ", ".join( - f"{name!r}: {frame.symbols.ref(name)}" for name in var_names - ) - self.writeline(f"context.vars.update({{{names_kv}}})") - if discarded_names: - if len(discarded_names) == 1: - self.writeline(f"context.exported_vars.discard({discarded_names[0]!r})") - else: - names_str = ", ".join(map(repr, discarded_names)) - self.writeline( - f"context.exported_vars.difference_update(({names_str}))" - ) - - def visit_For(self, node: nodes.For, frame: Frame) -> None: - loop_frame = frame.inner() - loop_frame.loop_frame = True - test_frame = frame.inner() - else_frame = frame.inner() - - # try to figure out if we have an extended loop. An extended loop - # is necessary if the loop is in recursive mode if the special loop - # variable is accessed in the body if the body is a scoped block. - extended_loop = ( - node.recursive - or "loop" - in find_undeclared(node.iter_child_nodes(only=("body",)), ("loop",)) - or any(block.scoped for block in node.find_all(nodes.Block)) - ) - - loop_ref = None - if extended_loop: - loop_ref = loop_frame.symbols.declare_parameter("loop") - - loop_frame.symbols.analyze_node(node, for_branch="body") - if node.else_: - else_frame.symbols.analyze_node(node, for_branch="else") - - if node.test: - loop_filter_func = self.temporary_identifier() - test_frame.symbols.analyze_node(node, for_branch="test") - self.writeline(f"{self.func(loop_filter_func)}(fiter):", node.test) - self.indent() - self.enter_frame(test_frame) - self.writeline(self.choose_async("async for ", "for ")) - self.visit(node.target, loop_frame) - self.write(" in ") - self.write(self.choose_async("auto_aiter(fiter)", "fiter")) - self.write(":") - self.indent() - self.writeline("if ", node.test) - self.visit(node.test, test_frame) - self.write(":") - self.indent() - self.writeline("yield ") - self.visit(node.target, loop_frame) - self.outdent(3) - self.leave_frame(test_frame, with_python_scope=True) - - # if we don't have an recursive loop we have to find the shadowed - # variables at that point. Because loops can be nested but the loop - # variable is a special one we have to enforce aliasing for it. - if node.recursive: - self.writeline( - f"{self.func('loop')}(reciter, loop_render_func, depth=0):", node - ) - self.indent() - self.buffer(loop_frame) - - # Use the same buffer for the else frame - else_frame.buffer = loop_frame.buffer - - # make sure the loop variable is a special one and raise a template - # assertion error if a loop tries to write to loop - if extended_loop: - self.writeline(f"{loop_ref} = missing") - - for name in node.find_all(nodes.Name): - if name.ctx == "store" and name.name == "loop": - self.fail( - "Can't assign to special loop variable in for-loop target", - name.lineno, - ) - - if node.else_: - iteration_indicator = self.temporary_identifier() - self.writeline(f"{iteration_indicator} = 1") - - self.writeline(self.choose_async("async for ", "for "), node) - self.visit(node.target, loop_frame) - if extended_loop: - self.write(f", {loop_ref} in {self.choose_async('Async')}LoopContext(") - else: - self.write(" in ") - - if node.test: - self.write(f"{loop_filter_func}(") - if node.recursive: - self.write("reciter") - else: - if self.environment.is_async and not extended_loop: - self.write("auto_aiter(") - self.visit(node.iter, frame) - if self.environment.is_async and not extended_loop: - self.write(")") - if node.test: - self.write(")") - - if node.recursive: - self.write(", undefined, loop_render_func, depth):") - else: - self.write(", undefined):" if extended_loop else ":") - - self.indent() - self.enter_frame(loop_frame) - - self.writeline("_loop_vars = {}") - self.blockvisit(node.body, loop_frame) - if node.else_: - self.writeline(f"{iteration_indicator} = 0") - self.outdent() - self.leave_frame( - loop_frame, with_python_scope=node.recursive and not node.else_ - ) - - if node.else_: - self.writeline(f"if {iteration_indicator}:") - self.indent() - self.enter_frame(else_frame) - self.blockvisit(node.else_, else_frame) - self.leave_frame(else_frame) - self.outdent() - - # if the node was recursive we have to return the buffer contents - # and start the iteration code - if node.recursive: - self.return_buffer_contents(loop_frame) - self.outdent() - self.start_write(frame, node) - self.write(f"{self.choose_async('await ')}loop(") - if self.environment.is_async: - self.write("auto_aiter(") - self.visit(node.iter, frame) - if self.environment.is_async: - self.write(")") - self.write(", loop)") - self.end_write(frame) - - # at the end of the iteration, clear any assignments made in the - # loop from the top level - if self._assign_stack: - self._assign_stack[-1].difference_update(loop_frame.symbols.stores) - - def visit_If(self, node: nodes.If, frame: Frame) -> None: - if_frame = frame.soft() - self.writeline("if ", node) - self.visit(node.test, if_frame) - self.write(":") - self.indent() - self.blockvisit(node.body, if_frame) - self.outdent() - for elif_ in node.elif_: - self.writeline("elif ", elif_) - self.visit(elif_.test, if_frame) - self.write(":") - self.indent() - self.blockvisit(elif_.body, if_frame) - self.outdent() - if node.else_: - self.writeline("else:") - self.indent() - self.blockvisit(node.else_, if_frame) - self.outdent() - - def visit_Macro(self, node: nodes.Macro, frame: Frame) -> None: - macro_frame, macro_ref = self.macro_body(node, frame) - self.newline() - if frame.toplevel: - if not node.name.startswith("_"): - self.write(f"context.exported_vars.add({node.name!r})") - self.writeline(f"context.vars[{node.name!r}] = ") - self.write(f"{frame.symbols.ref(node.name)} = ") - self.macro_def(macro_ref, macro_frame) - - def visit_CallBlock(self, node: nodes.CallBlock, frame: Frame) -> None: - call_frame, macro_ref = self.macro_body(node, frame) - self.writeline("caller = ") - self.macro_def(macro_ref, call_frame) - self.start_write(frame, node) - self.visit_Call(node.call, frame, forward_caller=True) - self.end_write(frame) - - def visit_FilterBlock(self, node: nodes.FilterBlock, frame: Frame) -> None: - filter_frame = frame.inner() - filter_frame.symbols.analyze_node(node) - self.enter_frame(filter_frame) - self.buffer(filter_frame) - self.blockvisit(node.body, filter_frame) - self.start_write(frame, node) - self.visit_Filter(node.filter, filter_frame) - self.end_write(frame) - self.leave_frame(filter_frame) - - def visit_With(self, node: nodes.With, frame: Frame) -> None: - with_frame = frame.inner() - with_frame.symbols.analyze_node(node) - self.enter_frame(with_frame) - for target, expr in zip(node.targets, node.values): - self.newline() - self.visit(target, with_frame) - self.write(" = ") - self.visit(expr, frame) - self.blockvisit(node.body, with_frame) - self.leave_frame(with_frame) - - def visit_ExprStmt(self, node: nodes.ExprStmt, frame: Frame) -> None: - self.newline(node) - self.visit(node.node, frame) - - class _FinalizeInfo(t.NamedTuple): - const: t.Optional[t.Callable[..., str]] - src: t.Optional[str] - - @staticmethod - def _default_finalize(value: t.Any) -> t.Any: - """The default finalize function if the environment isn't - configured with one. Or, if the environment has one, this is - called on that function's output for constants. - """ - return str(value) - - _finalize: t.Optional[_FinalizeInfo] = None - - def _make_finalize(self) -> _FinalizeInfo: - """Build the finalize function to be used on constants and at - runtime. Cached so it's only created once for all output nodes. - - Returns a ``namedtuple`` with the following attributes: - - ``const`` - A function to finalize constant data at compile time. - - ``src`` - Source code to output around nodes to be evaluated at - runtime. - """ - if self._finalize is not None: - return self._finalize - - finalize: t.Optional[t.Callable[..., t.Any]] - finalize = default = self._default_finalize - src = None - - if self.environment.finalize: - src = "environment.finalize(" - env_finalize = self.environment.finalize - pass_arg = { - _PassArg.context: "context", - _PassArg.eval_context: "context.eval_ctx", - _PassArg.environment: "environment", - }.get( - _PassArg.from_obj(env_finalize) # type: ignore - ) - finalize = None - - if pass_arg is None: - - def finalize(value: t.Any) -> t.Any: # noqa: F811 - return default(env_finalize(value)) - - else: - src = f"{src}{pass_arg}, " - - if pass_arg == "environment": - - def finalize(value: t.Any) -> t.Any: # noqa: F811 - return default(env_finalize(self.environment, value)) - - self._finalize = self._FinalizeInfo(finalize, src) - return self._finalize - - def _output_const_repr(self, group: t.Iterable[t.Any]) -> str: - """Given a group of constant values converted from ``Output`` - child nodes, produce a string to write to the template module - source. - """ - return repr(concat(group)) - - def _output_child_to_const( - self, node: nodes.Expr, frame: Frame, finalize: _FinalizeInfo - ) -> str: - """Try to optimize a child of an ``Output`` node by trying to - convert it to constant, finalized data at compile time. - - If :exc:`Impossible` is raised, the node is not constant and - will be evaluated at runtime. Any other exception will also be - evaluated at runtime for easier debugging. - """ - const = node.as_const(frame.eval_ctx) - - if frame.eval_ctx.autoescape: - const = escape(const) - - # Template data doesn't go through finalize. - if isinstance(node, nodes.TemplateData): - return str(const) - - return finalize.const(const) # type: ignore - - def _output_child_pre( - self, node: nodes.Expr, frame: Frame, finalize: _FinalizeInfo - ) -> None: - """Output extra source code before visiting a child of an - ``Output`` node. - """ - if frame.eval_ctx.volatile: - self.write("(escape if context.eval_ctx.autoescape else str)(") - elif frame.eval_ctx.autoescape: - self.write("escape(") - else: - self.write("str(") - - if finalize.src is not None: - self.write(finalize.src) - - def _output_child_post( - self, node: nodes.Expr, frame: Frame, finalize: _FinalizeInfo - ) -> None: - """Output extra source code after visiting a child of an - ``Output`` node. - """ - self.write(")") - - if finalize.src is not None: - self.write(")") - - def visit_Output(self, node: nodes.Output, frame: Frame) -> None: - # If an extends is active, don't render outside a block. - if frame.require_output_check: - # A top-level extends is known to exist at compile time. - if self.has_known_extends: - return - - self.writeline("if parent_template is None:") - self.indent() - - finalize = self._make_finalize() - body: t.List[t.Union[t.List[t.Any], nodes.Expr]] = [] - - # Evaluate constants at compile time if possible. Each item in - # body will be either a list of static data or a node to be - # evaluated at runtime. - for child in node.nodes: - try: - if not ( - # If the finalize function requires runtime context, - # constants can't be evaluated at compile time. - finalize.const - # Unless it's basic template data that won't be - # finalized anyway. - or isinstance(child, nodes.TemplateData) - ): - raise nodes.Impossible() - - const = self._output_child_to_const(child, frame, finalize) - except (nodes.Impossible, Exception): - # The node was not constant and needs to be evaluated at - # runtime. Or another error was raised, which is easier - # to debug at runtime. - body.append(child) - continue - - if body and isinstance(body[-1], list): - body[-1].append(const) - else: - body.append([const]) - - if frame.buffer is not None: - if len(body) == 1: - self.writeline(f"{frame.buffer}.append(") - else: - self.writeline(f"{frame.buffer}.extend((") - - self.indent() - - for item in body: - if isinstance(item, list): - # A group of constant data to join and output. - val = self._output_const_repr(item) - - if frame.buffer is None: - self.writeline("yield " + val) - else: - self.writeline(val + ",") - else: - if frame.buffer is None: - self.writeline("yield ", item) - else: - self.newline(item) - - # A node to be evaluated at runtime. - self._output_child_pre(item, frame, finalize) - self.visit(item, frame) - self._output_child_post(item, frame, finalize) - - if frame.buffer is not None: - self.write(",") - - if frame.buffer is not None: - self.outdent() - self.writeline(")" if len(body) == 1 else "))") - - if frame.require_output_check: - self.outdent() - - def visit_Assign(self, node: nodes.Assign, frame: Frame) -> None: - self.push_assign_tracking() - self.newline(node) - self.visit(node.target, frame) - self.write(" = ") - self.visit(node.node, frame) - self.pop_assign_tracking(frame) - - def visit_AssignBlock(self, node: nodes.AssignBlock, frame: Frame) -> None: - self.push_assign_tracking() - block_frame = frame.inner() - # This is a special case. Since a set block always captures we - # will disable output checks. This way one can use set blocks - # toplevel even in extended templates. - block_frame.require_output_check = False - block_frame.symbols.analyze_node(node) - self.enter_frame(block_frame) - self.buffer(block_frame) - self.blockvisit(node.body, block_frame) - self.newline(node) - self.visit(node.target, frame) - self.write(" = (Markup if context.eval_ctx.autoescape else identity)(") - if node.filter is not None: - self.visit_Filter(node.filter, block_frame) - else: - self.write(f"concat({block_frame.buffer})") - self.write(")") - self.pop_assign_tracking(frame) - self.leave_frame(block_frame) - - # -- Expression Visitors - - def visit_Name(self, node: nodes.Name, frame: Frame) -> None: - if node.ctx == "store" and ( - frame.toplevel or frame.loop_frame or frame.block_frame - ): - if self._assign_stack: - self._assign_stack[-1].add(node.name) - ref = frame.symbols.ref(node.name) - - # If we are looking up a variable we might have to deal with the - # case where it's undefined. We can skip that case if the load - # instruction indicates a parameter which are always defined. - if node.ctx == "load": - load = frame.symbols.find_load(ref) - if not ( - load is not None - and load[0] == VAR_LOAD_PARAMETER - and not self.parameter_is_undeclared(ref) - ): - self.write( - f"(undefined(name={node.name!r}) if {ref} is missing else {ref})" - ) - return - - self.write(ref) - - def visit_NSRef(self, node: nodes.NSRef, frame: Frame) -> None: - # NSRefs can only be used to store values; since they use the normal - # `foo.bar` notation they will be parsed as a normal attribute access - # when used anywhere but in a `set` context - ref = frame.symbols.ref(node.name) - self.writeline(f"if not isinstance({ref}, Namespace):") - self.indent() - self.writeline( - "raise TemplateRuntimeError" - '("cannot assign attribute on non-namespace object")' - ) - self.outdent() - self.writeline(f"{ref}[{node.attr!r}]") - - def visit_Const(self, node: nodes.Const, frame: Frame) -> None: - val = node.as_const(frame.eval_ctx) - if isinstance(val, float): - self.write(str(val)) - else: - self.write(repr(val)) - - def visit_TemplateData(self, node: nodes.TemplateData, frame: Frame) -> None: - try: - self.write(repr(node.as_const(frame.eval_ctx))) - except nodes.Impossible: - self.write( - f"(Markup if context.eval_ctx.autoescape else identity)({node.data!r})" - ) - - def visit_Tuple(self, node: nodes.Tuple, frame: Frame) -> None: - self.write("(") - idx = -1 - for idx, item in enumerate(node.items): - if idx: - self.write(", ") - self.visit(item, frame) - self.write(",)" if idx == 0 else ")") - - def visit_List(self, node: nodes.List, frame: Frame) -> None: - self.write("[") - for idx, item in enumerate(node.items): - if idx: - self.write(", ") - self.visit(item, frame) - self.write("]") - - def visit_Dict(self, node: nodes.Dict, frame: Frame) -> None: - self.write("{") - for idx, item in enumerate(node.items): - if idx: - self.write(", ") - self.visit(item.key, frame) - self.write(": ") - self.visit(item.value, frame) - self.write("}") - - visit_Add = _make_binop("+") - visit_Sub = _make_binop("-") - visit_Mul = _make_binop("*") - visit_Div = _make_binop("/") - visit_FloorDiv = _make_binop("//") - visit_Pow = _make_binop("**") - visit_Mod = _make_binop("%") - visit_And = _make_binop("and") - visit_Or = _make_binop("or") - visit_Pos = _make_unop("+") - visit_Neg = _make_unop("-") - visit_Not = _make_unop("not ") - - @optimizeconst - def visit_Concat(self, node: nodes.Concat, frame: Frame) -> None: - if frame.eval_ctx.volatile: - func_name = "(markup_join if context.eval_ctx.volatile else str_join)" - elif frame.eval_ctx.autoescape: - func_name = "markup_join" - else: - func_name = "str_join" - self.write(f"{func_name}((") - for arg in node.nodes: - self.visit(arg, frame) - self.write(", ") - self.write("))") - - @optimizeconst - def visit_Compare(self, node: nodes.Compare, frame: Frame) -> None: - self.write("(") - self.visit(node.expr, frame) - for op in node.ops: - self.visit(op, frame) - self.write(")") - - def visit_Operand(self, node: nodes.Operand, frame: Frame) -> None: - self.write(f" {operators[node.op]} ") - self.visit(node.expr, frame) - - @optimizeconst - def visit_Getattr(self, node: nodes.Getattr, frame: Frame) -> None: - if self.environment.is_async: - self.write("(await auto_await(") - - self.write("environment.getattr(") - self.visit(node.node, frame) - self.write(f", {node.attr!r})") - - if self.environment.is_async: - self.write("))") - - @optimizeconst - def visit_Getitem(self, node: nodes.Getitem, frame: Frame) -> None: - # slices bypass the environment getitem method. - if isinstance(node.arg, nodes.Slice): - self.visit(node.node, frame) - self.write("[") - self.visit(node.arg, frame) - self.write("]") - else: - if self.environment.is_async: - self.write("(await auto_await(") - - self.write("environment.getitem(") - self.visit(node.node, frame) - self.write(", ") - self.visit(node.arg, frame) - self.write(")") - - if self.environment.is_async: - self.write("))") - - def visit_Slice(self, node: nodes.Slice, frame: Frame) -> None: - if node.start is not None: - self.visit(node.start, frame) - self.write(":") - if node.stop is not None: - self.visit(node.stop, frame) - if node.step is not None: - self.write(":") - self.visit(node.step, frame) - - @contextmanager - def _filter_test_common( - self, node: t.Union[nodes.Filter, nodes.Test], frame: Frame, is_filter: bool - ) -> t.Iterator[None]: - if self.environment.is_async: - self.write("(await auto_await(") - - if is_filter: - self.write(f"{self.filters[node.name]}(") - func = self.environment.filters.get(node.name) - else: - self.write(f"{self.tests[node.name]}(") - func = self.environment.tests.get(node.name) - - # When inside an If or CondExpr frame, allow the filter to be - # undefined at compile time and only raise an error if it's - # actually called at runtime. See pull_dependencies. - if func is None and not frame.soft_frame: - type_name = "filter" if is_filter else "test" - self.fail(f"No {type_name} named {node.name!r}.", node.lineno) - - pass_arg = { - _PassArg.context: "context", - _PassArg.eval_context: "context.eval_ctx", - _PassArg.environment: "environment", - }.get( - _PassArg.from_obj(func) # type: ignore - ) - - if pass_arg is not None: - self.write(f"{pass_arg}, ") - - # Back to the visitor function to handle visiting the target of - # the filter or test. - yield - - self.signature(node, frame) - self.write(")") - - if self.environment.is_async: - self.write("))") - - @optimizeconst - def visit_Filter(self, node: nodes.Filter, frame: Frame) -> None: - with self._filter_test_common(node, frame, True): - # if the filter node is None we are inside a filter block - # and want to write to the current buffer - if node.node is not None: - self.visit(node.node, frame) - elif frame.eval_ctx.volatile: - self.write( - f"(Markup(concat({frame.buffer}))" - f" if context.eval_ctx.autoescape else concat({frame.buffer}))" - ) - elif frame.eval_ctx.autoescape: - self.write(f"Markup(concat({frame.buffer}))") - else: - self.write(f"concat({frame.buffer})") - - @optimizeconst - def visit_Test(self, node: nodes.Test, frame: Frame) -> None: - with self._filter_test_common(node, frame, False): - self.visit(node.node, frame) - - @optimizeconst - def visit_CondExpr(self, node: nodes.CondExpr, frame: Frame) -> None: - frame = frame.soft() - - def write_expr2() -> None: - if node.expr2 is not None: - self.visit(node.expr2, frame) - return - - self.write( - f'cond_expr_undefined("the inline if-expression on' - f" {self.position(node)} evaluated to false and no else" - f' section was defined.")' - ) - - self.write("(") - self.visit(node.expr1, frame) - self.write(" if ") - self.visit(node.test, frame) - self.write(" else ") - write_expr2() - self.write(")") - - @optimizeconst - def visit_Call( - self, node: nodes.Call, frame: Frame, forward_caller: bool = False - ) -> None: - if self.environment.is_async: - self.write("(await auto_await(") - if self.environment.sandboxed: - self.write("environment.call(context, ") - else: - self.write("context.call(") - self.visit(node.node, frame) - extra_kwargs = {"caller": "caller"} if forward_caller else None - loop_kwargs = {"_loop_vars": "_loop_vars"} if frame.loop_frame else {} - block_kwargs = {"_block_vars": "_block_vars"} if frame.block_frame else {} - if extra_kwargs: - extra_kwargs.update(loop_kwargs, **block_kwargs) - elif loop_kwargs or block_kwargs: - extra_kwargs = dict(loop_kwargs, **block_kwargs) - self.signature(node, frame, extra_kwargs) - self.write(")") - if self.environment.is_async: - self.write("))") - - def visit_Keyword(self, node: nodes.Keyword, frame: Frame) -> None: - self.write(node.key + "=") - self.visit(node.value, frame) - - # -- Unused nodes for extensions - - def visit_MarkSafe(self, node: nodes.MarkSafe, frame: Frame) -> None: - self.write("Markup(") - self.visit(node.expr, frame) - self.write(")") - - def visit_MarkSafeIfAutoescape( - self, node: nodes.MarkSafeIfAutoescape, frame: Frame - ) -> None: - self.write("(Markup if context.eval_ctx.autoescape else identity)(") - self.visit(node.expr, frame) - self.write(")") - - def visit_EnvironmentAttribute( - self, node: nodes.EnvironmentAttribute, frame: Frame - ) -> None: - self.write("environment." + node.name) - - def visit_ExtensionAttribute( - self, node: nodes.ExtensionAttribute, frame: Frame - ) -> None: - self.write(f"environment.extensions[{node.identifier!r}].{node.name}") - - def visit_ImportedName(self, node: nodes.ImportedName, frame: Frame) -> None: - self.write(self.import_aliases[node.importname]) - - def visit_InternalName(self, node: nodes.InternalName, frame: Frame) -> None: - self.write(node.name) - - def visit_ContextReference( - self, node: nodes.ContextReference, frame: Frame - ) -> None: - self.write("context") - - def visit_DerivedContextReference( - self, node: nodes.DerivedContextReference, frame: Frame - ) -> None: - self.write(self.derive_context(frame)) - - def visit_Continue(self, node: nodes.Continue, frame: Frame) -> None: - self.writeline("continue", node) - - def visit_Break(self, node: nodes.Break, frame: Frame) -> None: - self.writeline("break", node) - - def visit_Scope(self, node: nodes.Scope, frame: Frame) -> None: - scope_frame = frame.inner() - scope_frame.symbols.analyze_node(node) - self.enter_frame(scope_frame) - self.blockvisit(node.body, scope_frame) - self.leave_frame(scope_frame) - - def visit_OverlayScope(self, node: nodes.OverlayScope, frame: Frame) -> None: - ctx = self.temporary_identifier() - self.writeline(f"{ctx} = {self.derive_context(frame)}") - self.writeline(f"{ctx}.vars = ") - self.visit(node.context, frame) - self.push_context_reference(ctx) - - scope_frame = frame.inner(isolated=True) - scope_frame.symbols.analyze_node(node) - self.enter_frame(scope_frame) - self.blockvisit(node.body, scope_frame) - self.leave_frame(scope_frame) - self.pop_context_reference() - - def visit_EvalContextModifier( - self, node: nodes.EvalContextModifier, frame: Frame - ) -> None: - for keyword in node.options: - self.writeline(f"context.eval_ctx.{keyword.key} = ") - self.visit(keyword.value, frame) - try: - val = keyword.value.as_const(frame.eval_ctx) - except nodes.Impossible: - frame.eval_ctx.volatile = True - else: - setattr(frame.eval_ctx, keyword.key, val) - - def visit_ScopedEvalContextModifier( - self, node: nodes.ScopedEvalContextModifier, frame: Frame - ) -> None: - old_ctx_name = self.temporary_identifier() - saved_ctx = frame.eval_ctx.save() - self.writeline(f"{old_ctx_name} = context.eval_ctx.save()") - self.visit_EvalContextModifier(node, frame) - for child in node.body: - self.visit(child, frame) - frame.eval_ctx.revert(saved_ctx) - self.writeline(f"context.eval_ctx.revert({old_ctx_name})") diff --git a/venv/lib/python3.11/site-packages/jinja2/constants.py b/venv/lib/python3.11/site-packages/jinja2/constants.py deleted file mode 100644 index 41a1c23..0000000 --- a/venv/lib/python3.11/site-packages/jinja2/constants.py +++ /dev/null @@ -1,20 +0,0 @@ -#: list of lorem ipsum words used by the lipsum() helper function -LOREM_IPSUM_WORDS = """\ -a ac accumsan ad adipiscing aenean aliquam aliquet amet ante aptent arcu at -auctor augue bibendum blandit class commodo condimentum congue consectetuer -consequat conubia convallis cras cubilia cum curabitur curae cursus dapibus -diam dictum dictumst dignissim dis dolor donec dui duis egestas eget eleifend -elementum elit enim erat eros est et etiam eu euismod facilisi facilisis fames -faucibus felis fermentum feugiat fringilla fusce gravida habitant habitasse hac -hendrerit hymenaeos iaculis id imperdiet in inceptos integer interdum ipsum -justo lacinia lacus laoreet lectus leo libero ligula litora lobortis lorem -luctus maecenas magna magnis malesuada massa mattis mauris metus mi molestie -mollis montes morbi mus nam nascetur natoque nec neque netus nibh nisi nisl non -nonummy nostra nulla nullam nunc odio orci ornare parturient pede pellentesque -penatibus per pharetra phasellus placerat platea porta porttitor posuere -potenti praesent pretium primis proin pulvinar purus quam quis quisque rhoncus -ridiculus risus rutrum sagittis sapien scelerisque sed sem semper senectus sit -sociis sociosqu sodales sollicitudin suscipit suspendisse taciti tellus tempor -tempus tincidunt torquent tortor tristique turpis ullamcorper ultrices -ultricies urna ut varius vehicula vel velit venenatis vestibulum vitae vivamus -viverra volutpat vulputate""" 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 "", 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 diff --git a/venv/lib/python3.11/site-packages/jinja2/defaults.py b/venv/lib/python3.11/site-packages/jinja2/defaults.py deleted file mode 100644 index 638cad3..0000000 --- a/venv/lib/python3.11/site-packages/jinja2/defaults.py +++ /dev/null @@ -1,48 +0,0 @@ -import typing as t - -from .filters import FILTERS as DEFAULT_FILTERS # noqa: F401 -from .tests import TESTS as DEFAULT_TESTS # noqa: F401 -from .utils import Cycler -from .utils import generate_lorem_ipsum -from .utils import Joiner -from .utils import Namespace - -if t.TYPE_CHECKING: - import typing_extensions as te - -# defaults for the parser / lexer -BLOCK_START_STRING = "{%" -BLOCK_END_STRING = "%}" -VARIABLE_START_STRING = "{{" -VARIABLE_END_STRING = "}}" -COMMENT_START_STRING = "{#" -COMMENT_END_STRING = "#}" -LINE_STATEMENT_PREFIX: t.Optional[str] = None -LINE_COMMENT_PREFIX: t.Optional[str] = None -TRIM_BLOCKS = False -LSTRIP_BLOCKS = False -NEWLINE_SEQUENCE: "te.Literal['\\n', '\\r\\n', '\\r']" = "\n" -KEEP_TRAILING_NEWLINE = False - -# default filters, tests and namespace - -DEFAULT_NAMESPACE = { - "range": range, - "dict": dict, - "lipsum": generate_lorem_ipsum, - "cycler": Cycler, - "joiner": Joiner, - "namespace": Namespace, -} - -# default policies -DEFAULT_POLICIES: t.Dict[str, t.Any] = { - "compiler.ascii_str": True, - "urlize.rel": "noopener", - "urlize.target": None, - "urlize.extra_schemes": None, - "truncate.leeway": 5, - "json.dumps_function": None, - "json.dumps_kwargs": {"sort_keys": True}, - "ext.i18n.trimmed": False, -} diff --git a/venv/lib/python3.11/site-packages/jinja2/environment.py b/venv/lib/python3.11/site-packages/jinja2/environment.py deleted file mode 100644 index 185d332..0000000 --- a/venv/lib/python3.11/site-packages/jinja2/environment.py +++ /dev/null @@ -1,1667 +0,0 @@ -"""Classes for managing templates and their runtime and compile time -options. -""" -import os -import typing -import typing as t -import weakref -from collections import ChainMap -from functools import lru_cache -from functools import partial -from functools import reduce -from types import CodeType - -from markupsafe import Markup - -from . import nodes -from .compiler import CodeGenerator -from .compiler import generate -from .defaults import BLOCK_END_STRING -from .defaults import BLOCK_START_STRING -from .defaults import COMMENT_END_STRING -from .defaults import COMMENT_START_STRING -from .defaults import DEFAULT_FILTERS -from .defaults import DEFAULT_NAMESPACE -from .defaults import DEFAULT_POLICIES -from .defaults import DEFAULT_TESTS -from .defaults import KEEP_TRAILING_NEWLINE -from .defaults import LINE_COMMENT_PREFIX -from .defaults import LINE_STATEMENT_PREFIX -from .defaults import LSTRIP_BLOCKS -from .defaults import NEWLINE_SEQUENCE -from .defaults import TRIM_BLOCKS -from .defaults import VARIABLE_END_STRING -from .defaults import VARIABLE_START_STRING -from .exceptions import TemplateNotFound -from .exceptions import TemplateRuntimeError -from .exceptions import TemplatesNotFound -from .exceptions import TemplateSyntaxError -from .exceptions import UndefinedError -from .lexer import get_lexer -from .lexer import Lexer -from .lexer import TokenStream -from .nodes import EvalContext -from .parser import Parser -from .runtime import Context -from .runtime import new_context -from .runtime import Undefined -from .utils import _PassArg -from .utils import concat -from .utils import consume -from .utils import import_string -from .utils import internalcode -from .utils import LRUCache -from .utils import missing - -if t.TYPE_CHECKING: - import typing_extensions as te - from .bccache import BytecodeCache - from .ext import Extension - from .loaders import BaseLoader - -_env_bound = t.TypeVar("_env_bound", bound="Environment") - - -# for direct template usage we have up to ten living environments -@lru_cache(maxsize=10) -def get_spontaneous_environment(cls: t.Type[_env_bound], *args: t.Any) -> _env_bound: - """Return a new spontaneous environment. A spontaneous environment - is used for templates created directly rather than through an - existing environment. - - :param cls: Environment class to create. - :param args: Positional arguments passed to environment. - """ - env = cls(*args) - env.shared = True - return env - - -def create_cache( - size: int, -) -> t.Optional[t.MutableMapping[t.Tuple[weakref.ref, str], "Template"]]: - """Return the cache class for the given size.""" - if size == 0: - return None - - if size < 0: - return {} - - return LRUCache(size) # type: ignore - - -def copy_cache( - cache: t.Optional[t.MutableMapping], -) -> t.Optional[t.MutableMapping[t.Tuple[weakref.ref, str], "Template"]]: - """Create an empty copy of the given cache.""" - if cache is None: - return None - - if type(cache) is dict: - return {} - - return LRUCache(cache.capacity) # type: ignore - - -def load_extensions( - environment: "Environment", - extensions: t.Sequence[t.Union[str, t.Type["Extension"]]], -) -> t.Dict[str, "Extension"]: - """Load the extensions from the list and bind it to the environment. - Returns a dict of instantiated extensions. - """ - result = {} - - for extension in extensions: - if isinstance(extension, str): - extension = t.cast(t.Type["Extension"], import_string(extension)) - - result[extension.identifier] = extension(environment) - - return result - - -def _environment_config_check(environment: "Environment") -> "Environment": - """Perform a sanity check on the environment.""" - assert issubclass( - environment.undefined, Undefined - ), "'undefined' must be a subclass of 'jinja2.Undefined'." - assert ( - environment.block_start_string - != environment.variable_start_string - != environment.comment_start_string - ), "block, variable and comment start strings must be different." - assert environment.newline_sequence in { - "\r", - "\r\n", - "\n", - }, "'newline_sequence' must be one of '\\n', '\\r\\n', or '\\r'." - return environment - - -class Environment: - r"""The core component of Jinja is the `Environment`. It contains - important shared variables like configuration, filters, tests, - globals and others. Instances of this class may be modified if - they are not shared and if no template was loaded so far. - Modifications on environments after the first template was loaded - will lead to surprising effects and undefined behavior. - - Here are the possible initialization parameters: - - `block_start_string` - The string marking the beginning of a block. Defaults to ``'{%'``. - - `block_end_string` - The string marking the end of a block. Defaults to ``'%}'``. - - `variable_start_string` - The string marking the beginning of a print statement. - Defaults to ``'{{'``. - - `variable_end_string` - The string marking the end of a print statement. Defaults to - ``'}}'``. - - `comment_start_string` - The string marking the beginning of a comment. Defaults to ``'{#'``. - - `comment_end_string` - The string marking the end of a comment. Defaults to ``'#}'``. - - `line_statement_prefix` - If given and a string, this will be used as prefix for line based - statements. See also :ref:`line-statements`. - - `line_comment_prefix` - If given and a string, this will be used as prefix for line based - comments. See also :ref:`line-statements`. - - .. versionadded:: 2.2 - - `trim_blocks` - If this is set to ``True`` the first newline after a block is - removed (block, not variable tag!). Defaults to `False`. - - `lstrip_blocks` - If this is set to ``True`` leading spaces and tabs are stripped - from the start of a line to a block. Defaults to `False`. - - `newline_sequence` - The sequence that starts a newline. Must be one of ``'\r'``, - ``'\n'`` or ``'\r\n'``. The default is ``'\n'`` which is a - useful default for Linux and OS X systems as well as web - applications. - - `keep_trailing_newline` - Preserve the trailing newline when rendering templates. - The default is ``False``, which causes a single newline, - if present, to be stripped from the end of the template. - - .. versionadded:: 2.7 - - `extensions` - List of Jinja extensions to use. This can either be import paths - as strings or extension classes. For more information have a - look at :ref:`the extensions documentation `. - - `optimized` - should the optimizer be enabled? Default is ``True``. - - `undefined` - :class:`Undefined` or a subclass of it that is used to represent - undefined values in the template. - - `finalize` - A callable that can be used to process the result of a variable - expression before it is output. For example one can convert - ``None`` implicitly into an empty string here. - - `autoescape` - If set to ``True`` the XML/HTML autoescaping feature is enabled by - default. For more details about autoescaping see - :class:`~markupsafe.Markup`. As of Jinja 2.4 this can also - be a callable that is passed the template name and has to - return ``True`` or ``False`` depending on autoescape should be - enabled by default. - - .. versionchanged:: 2.4 - `autoescape` can now be a function - - `loader` - The template loader for this environment. - - `cache_size` - The size of the cache. Per default this is ``400`` which means - that if more than 400 templates are loaded the loader will clean - out the least recently used template. If the cache size is set to - ``0`` templates are recompiled all the time, if the cache size is - ``-1`` the cache will not be cleaned. - - .. versionchanged:: 2.8 - The cache size was increased to 400 from a low 50. - - `auto_reload` - Some loaders load templates from locations where the template - sources may change (ie: file system or database). If - ``auto_reload`` is set to ``True`` (default) every time a template is - requested the loader checks if the source changed and if yes, it - will reload the template. For higher performance it's possible to - disable that. - - `bytecode_cache` - If set to a bytecode cache object, this object will provide a - cache for the internal Jinja bytecode so that templates don't - have to be parsed if they were not changed. - - See :ref:`bytecode-cache` for more information. - - `enable_async` - If set to true this enables async template execution which - allows using async functions and generators. - """ - - #: if this environment is sandboxed. Modifying this variable won't make - #: the environment sandboxed though. For a real sandboxed environment - #: have a look at jinja2.sandbox. This flag alone controls the code - #: generation by the compiler. - sandboxed = False - - #: True if the environment is just an overlay - overlayed = False - - #: the environment this environment is linked to if it is an overlay - linked_to: t.Optional["Environment"] = None - - #: shared environments have this set to `True`. A shared environment - #: must not be modified - shared = False - - #: the class that is used for code generation. See - #: :class:`~jinja2.compiler.CodeGenerator` for more information. - code_generator_class: t.Type["CodeGenerator"] = CodeGenerator - - concat = "".join - - #: the context class that is used for templates. See - #: :class:`~jinja2.runtime.Context` for more information. - context_class: t.Type[Context] = Context - - template_class: t.Type["Template"] - - def __init__( - self, - block_start_string: str = BLOCK_START_STRING, - block_end_string: str = BLOCK_END_STRING, - variable_start_string: str = VARIABLE_START_STRING, - variable_end_string: str = VARIABLE_END_STRING, - comment_start_string: str = COMMENT_START_STRING, - comment_end_string: str = COMMENT_END_STRING, - line_statement_prefix: t.Optional[str] = LINE_STATEMENT_PREFIX, - line_comment_prefix: t.Optional[str] = LINE_COMMENT_PREFIX, - trim_blocks: bool = TRIM_BLOCKS, - lstrip_blocks: bool = LSTRIP_BLOCKS, - newline_sequence: "te.Literal['\\n', '\\r\\n', '\\r']" = NEWLINE_SEQUENCE, - keep_trailing_newline: bool = KEEP_TRAILING_NEWLINE, - extensions: t.Sequence[t.Union[str, t.Type["Extension"]]] = (), - optimized: bool = True, - undefined: t.Type[Undefined] = Undefined, - finalize: t.Optional[t.Callable[..., t.Any]] = None, - autoescape: t.Union[bool, t.Callable[[t.Optional[str]], bool]] = False, - loader: t.Optional["BaseLoader"] = None, - cache_size: int = 400, - auto_reload: bool = True, - bytecode_cache: t.Optional["BytecodeCache"] = None, - enable_async: bool = False, - ): - # !!Important notice!! - # The constructor accepts quite a few arguments that should be - # passed by keyword rather than position. However it's important to - # not change the order of arguments because it's used at least - # internally in those cases: - # - spontaneous environments (i18n extension and Template) - # - unittests - # If parameter changes are required only add parameters at the end - # and don't change the arguments (or the defaults!) of the arguments - # existing already. - - # lexer / parser information - self.block_start_string = block_start_string - self.block_end_string = block_end_string - self.variable_start_string = variable_start_string - self.variable_end_string = variable_end_string - self.comment_start_string = comment_start_string - self.comment_end_string = comment_end_string - self.line_statement_prefix = line_statement_prefix - self.line_comment_prefix = line_comment_prefix - self.trim_blocks = trim_blocks - self.lstrip_blocks = lstrip_blocks - self.newline_sequence = newline_sequence - self.keep_trailing_newline = keep_trailing_newline - - # runtime information - self.undefined: t.Type[Undefined] = undefined - self.optimized = optimized - self.finalize = finalize - self.autoescape = autoescape - - # defaults - self.filters = DEFAULT_FILTERS.copy() - self.tests = DEFAULT_TESTS.copy() - self.globals = DEFAULT_NAMESPACE.copy() - - # set the loader provided - self.loader = loader - self.cache = create_cache(cache_size) - self.bytecode_cache = bytecode_cache - self.auto_reload = auto_reload - - # configurable policies - self.policies = DEFAULT_POLICIES.copy() - - # load extensions - self.extensions = load_extensions(self, extensions) - - self.is_async = enable_async - _environment_config_check(self) - - def add_extension(self, extension: t.Union[str, t.Type["Extension"]]) -> None: - """Adds an extension after the environment was created. - - .. versionadded:: 2.5 - """ - self.extensions.update(load_extensions(self, [extension])) - - def extend(self, **attributes: t.Any) -> None: - """Add the items to the instance of the environment if they do not exist - yet. This is used by :ref:`extensions ` to register - callbacks and configuration values without breaking inheritance. - """ - for key, value in attributes.items(): - if not hasattr(self, key): - setattr(self, key, value) - - def overlay( - self, - block_start_string: str = missing, - block_end_string: str = missing, - variable_start_string: str = missing, - variable_end_string: str = missing, - comment_start_string: str = missing, - comment_end_string: str = missing, - line_statement_prefix: t.Optional[str] = missing, - line_comment_prefix: t.Optional[str] = missing, - trim_blocks: bool = missing, - lstrip_blocks: bool = missing, - newline_sequence: "te.Literal['\\n', '\\r\\n', '\\r']" = missing, - keep_trailing_newline: bool = missing, - extensions: t.Sequence[t.Union[str, t.Type["Extension"]]] = missing, - optimized: bool = missing, - undefined: t.Type[Undefined] = missing, - finalize: t.Optional[t.Callable[..., t.Any]] = missing, - autoescape: t.Union[bool, t.Callable[[t.Optional[str]], bool]] = missing, - loader: t.Optional["BaseLoader"] = missing, - cache_size: int = missing, - auto_reload: bool = missing, - bytecode_cache: t.Optional["BytecodeCache"] = missing, - enable_async: bool = False, - ) -> "Environment": - """Create a new overlay environment that shares all the data with the - current environment except for cache and the overridden attributes. - Extensions cannot be removed for an overlayed environment. An overlayed - environment automatically gets all the extensions of the environment it - is linked to plus optional extra extensions. - - Creating overlays should happen after the initial environment was set - up completely. Not all attributes are truly linked, some are just - copied over so modifications on the original environment may not shine - through. - - .. versionchanged:: 3.1.2 - Added the ``newline_sequence``,, ``keep_trailing_newline``, - and ``enable_async`` parameters to match ``__init__``. - """ - args = dict(locals()) - del args["self"], args["cache_size"], args["extensions"], args["enable_async"] - - rv = object.__new__(self.__class__) - rv.__dict__.update(self.__dict__) - rv.overlayed = True - rv.linked_to = self - - for key, value in args.items(): - if value is not missing: - setattr(rv, key, value) - - if cache_size is not missing: - rv.cache = create_cache(cache_size) - else: - rv.cache = copy_cache(self.cache) - - rv.extensions = {} - for key, value in self.extensions.items(): - rv.extensions[key] = value.bind(rv) - if extensions is not missing: - rv.extensions.update(load_extensions(rv, extensions)) - - if enable_async is not missing: - rv.is_async = enable_async - - return _environment_config_check(rv) - - @property - def lexer(self) -> Lexer: - """The lexer for this environment.""" - return get_lexer(self) - - def iter_extensions(self) -> t.Iterator["Extension"]: - """Iterates over the extensions by priority.""" - return iter(sorted(self.extensions.values(), key=lambda x: x.priority)) - - def getitem( - self, obj: t.Any, argument: t.Union[str, t.Any] - ) -> t.Union[t.Any, Undefined]: - """Get an item or attribute of an object but prefer the item.""" - try: - return obj[argument] - except (AttributeError, TypeError, LookupError): - if isinstance(argument, str): - try: - attr = str(argument) - except Exception: - pass - else: - try: - return getattr(obj, attr) - except AttributeError: - pass - return self.undefined(obj=obj, name=argument) - - def getattr(self, obj: t.Any, attribute: str) -> t.Any: - """Get an item or attribute of an object but prefer the attribute. - Unlike :meth:`getitem` the attribute *must* be a string. - """ - try: - return getattr(obj, attribute) - except AttributeError: - pass - try: - return obj[attribute] - except (TypeError, LookupError, AttributeError): - return self.undefined(obj=obj, name=attribute) - - def _filter_test_common( - self, - name: t.Union[str, Undefined], - value: t.Any, - args: t.Optional[t.Sequence[t.Any]], - kwargs: t.Optional[t.Mapping[str, t.Any]], - context: t.Optional[Context], - eval_ctx: t.Optional[EvalContext], - is_filter: bool, - ) -> t.Any: - if is_filter: - env_map = self.filters - type_name = "filter" - else: - env_map = self.tests - type_name = "test" - - func = env_map.get(name) # type: ignore - - if func is None: - msg = f"No {type_name} named {name!r}." - - if isinstance(name, Undefined): - try: - name._fail_with_undefined_error() - except Exception as e: - msg = f"{msg} ({e}; did you forget to quote the callable name?)" - - raise TemplateRuntimeError(msg) - - args = [value, *(args if args is not None else ())] - kwargs = kwargs if kwargs is not None else {} - pass_arg = _PassArg.from_obj(func) - - if pass_arg is _PassArg.context: - if context is None: - raise TemplateRuntimeError( - f"Attempted to invoke a context {type_name} without context." - ) - - args.insert(0, context) - elif pass_arg is _PassArg.eval_context: - if eval_ctx is None: - if context is not None: - eval_ctx = context.eval_ctx - else: - eval_ctx = EvalContext(self) - - args.insert(0, eval_ctx) - elif pass_arg is _PassArg.environment: - args.insert(0, self) - - return func(*args, **kwargs) - - def call_filter( - self, - name: str, - value: t.Any, - args: t.Optional[t.Sequence[t.Any]] = None, - kwargs: t.Optional[t.Mapping[str, t.Any]] = None, - context: t.Optional[Context] = None, - eval_ctx: t.Optional[EvalContext] = None, - ) -> t.Any: - """Invoke a filter on a value the same way the compiler does. - - This might return a coroutine if the filter is running from an - environment in async mode and the filter supports async - execution. It's your responsibility to await this if needed. - - .. versionadded:: 2.7 - """ - return self._filter_test_common( - name, value, args, kwargs, context, eval_ctx, True - ) - - def call_test( - self, - name: str, - value: t.Any, - args: t.Optional[t.Sequence[t.Any]] = None, - kwargs: t.Optional[t.Mapping[str, t.Any]] = None, - context: t.Optional[Context] = None, - eval_ctx: t.Optional[EvalContext] = None, - ) -> t.Any: - """Invoke a test on a value the same way the compiler does. - - This might return a coroutine if the test is running from an - environment in async mode and the test supports async execution. - It's your responsibility to await this if needed. - - .. versionchanged:: 3.0 - Tests support ``@pass_context``, etc. decorators. Added - the ``context`` and ``eval_ctx`` parameters. - - .. versionadded:: 2.7 - """ - return self._filter_test_common( - name, value, args, kwargs, context, eval_ctx, False - ) - - @internalcode - def parse( - self, - source: str, - name: t.Optional[str] = None, - filename: t.Optional[str] = None, - ) -> nodes.Template: - """Parse the sourcecode and return the abstract syntax tree. This - tree of nodes is used by the compiler to convert the template into - executable source- or bytecode. This is useful for debugging or to - extract information from templates. - - If you are :ref:`developing Jinja extensions ` - this gives you a good overview of the node tree generated. - """ - try: - return self._parse(source, name, filename) - except TemplateSyntaxError: - self.handle_exception(source=source) - - def _parse( - self, source: str, name: t.Optional[str], filename: t.Optional[str] - ) -> nodes.Template: - """Internal parsing function used by `parse` and `compile`.""" - return Parser(self, source, name, filename).parse() - - def lex( - self, - source: str, - name: t.Optional[str] = None, - filename: t.Optional[str] = None, - ) -> t.Iterator[t.Tuple[int, str, str]]: - """Lex the given sourcecode and return a generator that yields - tokens as tuples in the form ``(lineno, token_type, value)``. - This can be useful for :ref:`extension development ` - and debugging templates. - - This does not perform preprocessing. If you want the preprocessing - of the extensions to be applied you have to filter source through - the :meth:`preprocess` method. - """ - source = str(source) - try: - return self.lexer.tokeniter(source, name, filename) - except TemplateSyntaxError: - self.handle_exception(source=source) - - def preprocess( - self, - source: str, - name: t.Optional[str] = None, - filename: t.Optional[str] = None, - ) -> str: - """Preprocesses the source with all extensions. This is automatically - called for all parsing and compiling methods but *not* for :meth:`lex` - because there you usually only want the actual source tokenized. - """ - return reduce( - lambda s, e: e.preprocess(s, name, filename), - self.iter_extensions(), - str(source), - ) - - def _tokenize( - self, - source: str, - name: t.Optional[str], - filename: t.Optional[str] = None, - state: t.Optional[str] = None, - ) -> TokenStream: - """Called by the parser to do the preprocessing and filtering - for all the extensions. Returns a :class:`~jinja2.lexer.TokenStream`. - """ - source = self.preprocess(source, name, filename) - stream = self.lexer.tokenize(source, name, filename, state) - - for ext in self.iter_extensions(): - stream = ext.filter_stream(stream) # type: ignore - - if not isinstance(stream, TokenStream): - stream = TokenStream(stream, name, filename) # type: ignore - - return stream - - def _generate( - self, - source: nodes.Template, - name: t.Optional[str], - filename: t.Optional[str], - defer_init: bool = False, - ) -> str: - """Internal hook that can be overridden to hook a different generate - method in. - - .. versionadded:: 2.5 - """ - return generate( # type: ignore - source, - self, - name, - filename, - defer_init=defer_init, - optimized=self.optimized, - ) - - def _compile(self, source: str, filename: str) -> CodeType: - """Internal hook that can be overridden to hook a different compile - method in. - - .. versionadded:: 2.5 - """ - return compile(source, filename, "exec") - - @typing.overload - def compile( # type: ignore - self, - source: t.Union[str, nodes.Template], - name: t.Optional[str] = None, - filename: t.Optional[str] = None, - raw: "te.Literal[False]" = False, - defer_init: bool = False, - ) -> CodeType: - ... - - @typing.overload - def compile( - self, - source: t.Union[str, nodes.Template], - name: t.Optional[str] = None, - filename: t.Optional[str] = None, - raw: "te.Literal[True]" = ..., - defer_init: bool = False, - ) -> str: - ... - - @internalcode - def compile( - self, - source: t.Union[str, nodes.Template], - name: t.Optional[str] = None, - filename: t.Optional[str] = None, - raw: bool = False, - defer_init: bool = False, - ) -> t.Union[str, CodeType]: - """Compile a node or template source code. The `name` parameter is - the load name of the template after it was joined using - :meth:`join_path` if necessary, not the filename on the file system. - the `filename` parameter is the estimated filename of the template on - the file system. If the template came from a database or memory this - can be omitted. - - The return value of this method is a python code object. If the `raw` - parameter is `True` the return value will be a string with python - code equivalent to the bytecode returned otherwise. This method is - mainly used internally. - - `defer_init` is use internally to aid the module code generator. This - causes the generated code to be able to import without the global - environment variable to be set. - - .. versionadded:: 2.4 - `defer_init` parameter added. - """ - source_hint = None - try: - if isinstance(source, str): - source_hint = source - source = self._parse(source, name, filename) - source = self._generate(source, name, filename, defer_init=defer_init) - if raw: - return source - if filename is None: - filename = "