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Diffstat (limited to 'lib/spack/external/jinja2/parser.py')
| -rw-r--r-- | lib/spack/external/jinja2/parser.py | 939 |
1 files changed, 0 insertions, 939 deletions
diff --git a/lib/spack/external/jinja2/parser.py b/lib/spack/external/jinja2/parser.py deleted file mode 100644 index d5881066f7..0000000000 --- a/lib/spack/external/jinja2/parser.py +++ /dev/null @@ -1,939 +0,0 @@ -# -*- coding: utf-8 -*- -"""Parse tokens from the lexer into nodes for the compiler.""" -from . import nodes -from ._compat import imap -from .exceptions import TemplateAssertionError -from .exceptions import TemplateSyntaxError -from .lexer import describe_token -from .lexer import describe_token_expr - -_statement_keywords = frozenset( - [ - "for", - "if", - "block", - "extends", - "print", - "macro", - "include", - "from", - "import", - "set", - "with", - "autoescape", - ] -) -_compare_operators = frozenset(["eq", "ne", "lt", "lteq", "gt", "gteq"]) - -_math_nodes = { - "add": nodes.Add, - "sub": nodes.Sub, - "mul": nodes.Mul, - "div": nodes.Div, - "floordiv": nodes.FloorDiv, - "mod": nodes.Mod, -} - - -class Parser(object): - """This is the central parsing class Jinja uses. It's passed to - extensions and can be used to parse expressions or statements. - """ - - def __init__(self, environment, source, name=None, filename=None, state=None): - self.environment = environment - self.stream = environment._tokenize(source, name, filename, state) - self.name = name - self.filename = filename - self.closed = False - self.extensions = {} - for extension in environment.iter_extensions(): - for tag in extension.tags: - self.extensions[tag] = extension.parse - self._last_identifier = 0 - self._tag_stack = [] - self._end_token_stack = [] - - def fail(self, msg, lineno=None, exc=TemplateSyntaxError): - """Convenience method that raises `exc` with the message, passed - line number or last line number as well as the current name and - filename. - """ - if lineno is None: - lineno = self.stream.current.lineno - raise exc(msg, lineno, self.name, self.filename) - - def _fail_ut_eof(self, name, end_token_stack, lineno): - expected = [] - for exprs in end_token_stack: - expected.extend(imap(describe_token_expr, exprs)) - if end_token_stack: - currently_looking = " or ".join( - "'%s'" % describe_token_expr(expr) for expr in end_token_stack[-1] - ) - else: - currently_looking = None - - if name is None: - message = ["Unexpected end of template."] - else: - message = ["Encountered unknown tag '%s'." % name] - - if currently_looking: - if name is not None and name in expected: - message.append( - "You probably made a nesting mistake. Jinja " - "is expecting this tag, but currently looking " - "for %s." % currently_looking - ) - else: - message.append( - "Jinja was looking for the following tags: " - "%s." % currently_looking - ) - - if self._tag_stack: - message.append( - "The innermost block that needs to be " - "closed is '%s'." % self._tag_stack[-1] - ) - - self.fail(" ".join(message), lineno) - - def fail_unknown_tag(self, name, lineno=None): - """Called if the parser encounters an unknown tag. Tries to fail - with a human readable error message that could help to identify - the problem. - """ - return self._fail_ut_eof(name, self._end_token_stack, lineno) - - def fail_eof(self, end_tokens=None, lineno=None): - """Like fail_unknown_tag but for end of template situations.""" - stack = list(self._end_token_stack) - if end_tokens is not None: - stack.append(end_tokens) - return self._fail_ut_eof(None, stack, lineno) - - def is_tuple_end(self, extra_end_rules=None): - """Are we at the end of a tuple?""" - if self.stream.current.type in ("variable_end", "block_end", "rparen"): - return True - elif extra_end_rules is not None: - return self.stream.current.test_any(extra_end_rules) - return False - - def free_identifier(self, lineno=None): - """Return a new free identifier as :class:`~jinja2.nodes.InternalName`.""" - self._last_identifier += 1 - rv = object.__new__(nodes.InternalName) - nodes.Node.__init__(rv, "fi%d" % self._last_identifier, lineno=lineno) - return rv - - def parse_statement(self): - """Parse a single statement.""" - token = self.stream.current - if token.type != "name": - self.fail("tag name expected", token.lineno) - self._tag_stack.append(token.value) - pop_tag = True - try: - if token.value in _statement_keywords: - return getattr(self, "parse_" + self.stream.current.value)() - if token.value == "call": - return self.parse_call_block() - if token.value == "filter": - return self.parse_filter_block() - ext = self.extensions.get(token.value) - if ext is not None: - return ext(self) - - # did not work out, remove the token we pushed by accident - # from the stack so that the unknown tag fail function can - # produce a proper error message. - self._tag_stack.pop() - pop_tag = False - self.fail_unknown_tag(token.value, token.lineno) - finally: - if pop_tag: - self._tag_stack.pop() - - def parse_statements(self, end_tokens, drop_needle=False): - """Parse multiple statements into a list until one of the end tokens - is reached. This is used to parse the body of statements as it also - parses template data if appropriate. The parser checks first if the - current token is a colon and skips it if there is one. Then it checks - for the block end and parses until if one of the `end_tokens` is - reached. Per default the active token in the stream at the end of - the call is the matched end token. If this is not wanted `drop_needle` - can be set to `True` and the end token is removed. - """ - # the first token may be a colon for python compatibility - self.stream.skip_if("colon") - - # in the future it would be possible to add whole code sections - # by adding some sort of end of statement token and parsing those here. - self.stream.expect("block_end") - result = self.subparse(end_tokens) - - # we reached the end of the template too early, the subparser - # does not check for this, so we do that now - if self.stream.current.type == "eof": - self.fail_eof(end_tokens) - - if drop_needle: - next(self.stream) - return result - - def parse_set(self): - """Parse an assign statement.""" - lineno = next(self.stream).lineno - target = self.parse_assign_target(with_namespace=True) - if self.stream.skip_if("assign"): - expr = self.parse_tuple() - return nodes.Assign(target, expr, lineno=lineno) - filter_node = self.parse_filter(None) - body = self.parse_statements(("name:endset",), drop_needle=True) - return nodes.AssignBlock(target, filter_node, body, lineno=lineno) - - def parse_for(self): - """Parse a for loop.""" - lineno = self.stream.expect("name:for").lineno - target = self.parse_assign_target(extra_end_rules=("name:in",)) - self.stream.expect("name:in") - iter = self.parse_tuple( - with_condexpr=False, extra_end_rules=("name:recursive",) - ) - test = None - if self.stream.skip_if("name:if"): - test = self.parse_expression() - recursive = self.stream.skip_if("name:recursive") - body = self.parse_statements(("name:endfor", "name:else")) - if next(self.stream).value == "endfor": - else_ = [] - else: - else_ = self.parse_statements(("name:endfor",), drop_needle=True) - return nodes.For(target, iter, body, else_, test, recursive, lineno=lineno) - - def parse_if(self): - """Parse an if construct.""" - node = result = nodes.If(lineno=self.stream.expect("name:if").lineno) - while 1: - node.test = self.parse_tuple(with_condexpr=False) - node.body = self.parse_statements(("name:elif", "name:else", "name:endif")) - node.elif_ = [] - node.else_ = [] - token = next(self.stream) - if token.test("name:elif"): - node = nodes.If(lineno=self.stream.current.lineno) - result.elif_.append(node) - continue - elif token.test("name:else"): - result.else_ = self.parse_statements(("name:endif",), drop_needle=True) - break - return result - - def parse_with(self): - node = nodes.With(lineno=next(self.stream).lineno) - targets = [] - values = [] - while self.stream.current.type != "block_end": - if targets: - self.stream.expect("comma") - target = self.parse_assign_target() - target.set_ctx("param") - targets.append(target) - self.stream.expect("assign") - values.append(self.parse_expression()) - node.targets = targets - node.values = values - node.body = self.parse_statements(("name:endwith",), drop_needle=True) - return node - - def parse_autoescape(self): - node = nodes.ScopedEvalContextModifier(lineno=next(self.stream).lineno) - node.options = [nodes.Keyword("autoescape", self.parse_expression())] - node.body = self.parse_statements(("name:endautoescape",), drop_needle=True) - return nodes.Scope([node]) - - def parse_block(self): - node = nodes.Block(lineno=next(self.stream).lineno) - node.name = self.stream.expect("name").value - node.scoped = self.stream.skip_if("name:scoped") - - # common problem people encounter when switching from django - # to jinja. we do not support hyphens in block names, so let's - # raise a nicer error message in that case. - if self.stream.current.type == "sub": - self.fail( - "Block names in Jinja have to be valid Python " - "identifiers and may not contain hyphens, use an " - "underscore instead." - ) - - node.body = self.parse_statements(("name:endblock",), drop_needle=True) - self.stream.skip_if("name:" + node.name) - return node - - def parse_extends(self): - node = nodes.Extends(lineno=next(self.stream).lineno) - node.template = self.parse_expression() - return node - - def parse_import_context(self, node, default): - if self.stream.current.test_any( - "name:with", "name:without" - ) and self.stream.look().test("name:context"): - node.with_context = next(self.stream).value == "with" - self.stream.skip() - else: - node.with_context = default - return node - - def parse_include(self): - node = nodes.Include(lineno=next(self.stream).lineno) - node.template = self.parse_expression() - if self.stream.current.test("name:ignore") and self.stream.look().test( - "name:missing" - ): - node.ignore_missing = True - self.stream.skip(2) - else: - node.ignore_missing = False - return self.parse_import_context(node, True) - - def parse_import(self): - node = nodes.Import(lineno=next(self.stream).lineno) - node.template = self.parse_expression() - self.stream.expect("name:as") - node.target = self.parse_assign_target(name_only=True).name - return self.parse_import_context(node, False) - - def parse_from(self): - node = nodes.FromImport(lineno=next(self.stream).lineno) - node.template = self.parse_expression() - self.stream.expect("name:import") - node.names = [] - - def parse_context(): - if self.stream.current.value in ( - "with", - "without", - ) and self.stream.look().test("name:context"): - node.with_context = next(self.stream).value == "with" - self.stream.skip() - return True - return False - - while 1: - if node.names: - self.stream.expect("comma") - if self.stream.current.type == "name": - if parse_context(): - break - target = self.parse_assign_target(name_only=True) - if target.name.startswith("_"): - self.fail( - "names starting with an underline can not be imported", - target.lineno, - exc=TemplateAssertionError, - ) - if self.stream.skip_if("name:as"): - alias = self.parse_assign_target(name_only=True) - node.names.append((target.name, alias.name)) - else: - node.names.append(target.name) - if parse_context() or self.stream.current.type != "comma": - break - else: - self.stream.expect("name") - if not hasattr(node, "with_context"): - node.with_context = False - return node - - def parse_signature(self, node): - node.args = args = [] - node.defaults = defaults = [] - self.stream.expect("lparen") - while self.stream.current.type != "rparen": - if args: - self.stream.expect("comma") - arg = self.parse_assign_target(name_only=True) - arg.set_ctx("param") - if self.stream.skip_if("assign"): - defaults.append(self.parse_expression()) - elif defaults: - self.fail("non-default argument follows default argument") - args.append(arg) - self.stream.expect("rparen") - - def parse_call_block(self): - node = nodes.CallBlock(lineno=next(self.stream).lineno) - if self.stream.current.type == "lparen": - self.parse_signature(node) - else: - node.args = [] - node.defaults = [] - - node.call = self.parse_expression() - if not isinstance(node.call, nodes.Call): - self.fail("expected call", node.lineno) - node.body = self.parse_statements(("name:endcall",), drop_needle=True) - return node - - def parse_filter_block(self): - node = nodes.FilterBlock(lineno=next(self.stream).lineno) - node.filter = self.parse_filter(None, start_inline=True) - node.body = self.parse_statements(("name:endfilter",), drop_needle=True) - return node - - def parse_macro(self): - node = nodes.Macro(lineno=next(self.stream).lineno) - node.name = self.parse_assign_target(name_only=True).name - self.parse_signature(node) - node.body = self.parse_statements(("name:endmacro",), drop_needle=True) - return node - - def parse_print(self): - node = nodes.Output(lineno=next(self.stream).lineno) - node.nodes = [] - while self.stream.current.type != "block_end": - if node.nodes: - self.stream.expect("comma") - node.nodes.append(self.parse_expression()) - return node - - def parse_assign_target( - self, - with_tuple=True, - name_only=False, - extra_end_rules=None, - with_namespace=False, - ): - """Parse an assignment target. As Jinja allows assignments to - tuples, this function can parse all allowed assignment targets. Per - default assignments to tuples are parsed, that can be disable however - by setting `with_tuple` to `False`. If only assignments to names are - wanted `name_only` can be set to `True`. The `extra_end_rules` - parameter is forwarded to the tuple parsing function. If - `with_namespace` is enabled, a namespace assignment may be parsed. - """ - if with_namespace and self.stream.look().type == "dot": - token = self.stream.expect("name") - next(self.stream) # dot - attr = self.stream.expect("name") - target = nodes.NSRef(token.value, attr.value, lineno=token.lineno) - elif name_only: - token = self.stream.expect("name") - target = nodes.Name(token.value, "store", lineno=token.lineno) - else: - if with_tuple: - target = self.parse_tuple( - simplified=True, extra_end_rules=extra_end_rules - ) - else: - target = self.parse_primary() - target.set_ctx("store") - if not target.can_assign(): - self.fail( - "can't assign to %r" % target.__class__.__name__.lower(), target.lineno - ) - return target - - def parse_expression(self, with_condexpr=True): - """Parse an expression. Per default all expressions are parsed, if - the optional `with_condexpr` parameter is set to `False` conditional - expressions are not parsed. - """ - if with_condexpr: - return self.parse_condexpr() - return self.parse_or() - - def parse_condexpr(self): - lineno = self.stream.current.lineno - expr1 = self.parse_or() - while self.stream.skip_if("name:if"): - expr2 = self.parse_or() - if self.stream.skip_if("name:else"): - expr3 = self.parse_condexpr() - else: - expr3 = None - expr1 = nodes.CondExpr(expr2, expr1, expr3, lineno=lineno) - lineno = self.stream.current.lineno - return expr1 - - def parse_or(self): - lineno = self.stream.current.lineno - left = self.parse_and() - while self.stream.skip_if("name:or"): - right = self.parse_and() - left = nodes.Or(left, right, lineno=lineno) - lineno = self.stream.current.lineno - return left - - def parse_and(self): - lineno = self.stream.current.lineno - left = self.parse_not() - while self.stream.skip_if("name:and"): - right = self.parse_not() - left = nodes.And(left, right, lineno=lineno) - lineno = self.stream.current.lineno - return left - - def parse_not(self): - if self.stream.current.test("name:not"): - lineno = next(self.stream).lineno - return nodes.Not(self.parse_not(), lineno=lineno) - return self.parse_compare() - - def parse_compare(self): - lineno = self.stream.current.lineno - expr = self.parse_math1() - ops = [] - while 1: - token_type = self.stream.current.type - if token_type in _compare_operators: - next(self.stream) - ops.append(nodes.Operand(token_type, self.parse_math1())) - elif self.stream.skip_if("name:in"): - ops.append(nodes.Operand("in", self.parse_math1())) - elif self.stream.current.test("name:not") and self.stream.look().test( - "name:in" - ): - self.stream.skip(2) - ops.append(nodes.Operand("notin", self.parse_math1())) - else: - break - lineno = self.stream.current.lineno - if not ops: - return expr - return nodes.Compare(expr, ops, lineno=lineno) - - def parse_math1(self): - lineno = self.stream.current.lineno - left = self.parse_concat() - while self.stream.current.type in ("add", "sub"): - cls = _math_nodes[self.stream.current.type] - next(self.stream) - right = self.parse_concat() - left = cls(left, right, lineno=lineno) - lineno = self.stream.current.lineno - return left - - def parse_concat(self): - lineno = self.stream.current.lineno - args = [self.parse_math2()] - while self.stream.current.type == "tilde": - next(self.stream) - args.append(self.parse_math2()) - if len(args) == 1: - return args[0] - return nodes.Concat(args, lineno=lineno) - - def parse_math2(self): - lineno = self.stream.current.lineno - left = self.parse_pow() - while self.stream.current.type in ("mul", "div", "floordiv", "mod"): - cls = _math_nodes[self.stream.current.type] - next(self.stream) - right = self.parse_pow() - left = cls(left, right, lineno=lineno) - lineno = self.stream.current.lineno - return left - - def parse_pow(self): - lineno = self.stream.current.lineno - left = self.parse_unary() - while self.stream.current.type == "pow": - next(self.stream) - right = self.parse_unary() - left = nodes.Pow(left, right, lineno=lineno) - lineno = self.stream.current.lineno - return left - - def parse_unary(self, with_filter=True): - token_type = self.stream.current.type - lineno = self.stream.current.lineno - if token_type == "sub": - next(self.stream) - node = nodes.Neg(self.parse_unary(False), lineno=lineno) - elif token_type == "add": - next(self.stream) - node = nodes.Pos(self.parse_unary(False), lineno=lineno) - else: - node = self.parse_primary() - node = self.parse_postfix(node) - if with_filter: - node = self.parse_filter_expr(node) - return node - - def parse_primary(self): - token = self.stream.current - if token.type == "name": - if token.value in ("true", "false", "True", "False"): - node = nodes.Const(token.value in ("true", "True"), lineno=token.lineno) - elif token.value in ("none", "None"): - node = nodes.Const(None, lineno=token.lineno) - else: - node = nodes.Name(token.value, "load", lineno=token.lineno) - next(self.stream) - elif token.type == "string": - next(self.stream) - buf = [token.value] - lineno = token.lineno - while self.stream.current.type == "string": - buf.append(self.stream.current.value) - next(self.stream) - node = nodes.Const("".join(buf), lineno=lineno) - elif token.type in ("integer", "float"): - next(self.stream) - node = nodes.Const(token.value, lineno=token.lineno) - elif token.type == "lparen": - next(self.stream) - node = self.parse_tuple(explicit_parentheses=True) - self.stream.expect("rparen") - elif token.type == "lbracket": - node = self.parse_list() - elif token.type == "lbrace": - node = self.parse_dict() - else: - self.fail("unexpected '%s'" % describe_token(token), token.lineno) - return node - - def parse_tuple( - self, - simplified=False, - with_condexpr=True, - extra_end_rules=None, - explicit_parentheses=False, - ): - """Works like `parse_expression` but if multiple expressions are - delimited by a comma a :class:`~jinja2.nodes.Tuple` node is created. - This method could also return a regular expression instead of a tuple - if no commas where found. - - The default parsing mode is a full tuple. If `simplified` is `True` - only names and literals are parsed. The `no_condexpr` parameter is - forwarded to :meth:`parse_expression`. - - Because tuples do not require delimiters and may end in a bogus comma - an extra hint is needed that marks the end of a tuple. For example - for loops support tuples between `for` and `in`. In that case the - `extra_end_rules` is set to ``['name:in']``. - - `explicit_parentheses` is true if the parsing was triggered by an - expression in parentheses. This is used to figure out if an empty - tuple is a valid expression or not. - """ - lineno = self.stream.current.lineno - if simplified: - parse = self.parse_primary - elif with_condexpr: - parse = self.parse_expression - else: - - def parse(): - return self.parse_expression(with_condexpr=False) - - args = [] - is_tuple = False - while 1: - if args: - self.stream.expect("comma") - if self.is_tuple_end(extra_end_rules): - break - args.append(parse()) - if self.stream.current.type == "comma": - is_tuple = True - else: - break - lineno = self.stream.current.lineno - - if not is_tuple: - if args: - return args[0] - - # if we don't have explicit parentheses, an empty tuple is - # not a valid expression. This would mean nothing (literally - # nothing) in the spot of an expression would be an empty - # tuple. - if not explicit_parentheses: - self.fail( - "Expected an expression, got '%s'" - % describe_token(self.stream.current) - ) - - return nodes.Tuple(args, "load", lineno=lineno) - - def parse_list(self): - token = self.stream.expect("lbracket") - items = [] - while self.stream.current.type != "rbracket": - if items: - self.stream.expect("comma") - if self.stream.current.type == "rbracket": - break - items.append(self.parse_expression()) - self.stream.expect("rbracket") - return nodes.List(items, lineno=token.lineno) - - def parse_dict(self): - token = self.stream.expect("lbrace") - items = [] - while self.stream.current.type != "rbrace": - if items: - self.stream.expect("comma") - if self.stream.current.type == "rbrace": - break - key = self.parse_expression() - self.stream.expect("colon") - value = self.parse_expression() - items.append(nodes.Pair(key, value, lineno=key.lineno)) - self.stream.expect("rbrace") - return nodes.Dict(items, lineno=token.lineno) - - def parse_postfix(self, node): - while 1: - token_type = self.stream.current.type - if token_type == "dot" or token_type == "lbracket": - node = self.parse_subscript(node) - # calls are valid both after postfix expressions (getattr - # and getitem) as well as filters and tests - elif token_type == "lparen": - node = self.parse_call(node) - else: - break - return node - - def parse_filter_expr(self, node): - while 1: - token_type = self.stream.current.type - if token_type == "pipe": - node = self.parse_filter(node) - elif token_type == "name" and self.stream.current.value == "is": - node = self.parse_test(node) - # calls are valid both after postfix expressions (getattr - # and getitem) as well as filters and tests - elif token_type == "lparen": - node = self.parse_call(node) - else: - break - return node - - def parse_subscript(self, node): - token = next(self.stream) - if token.type == "dot": - attr_token = self.stream.current - next(self.stream) - if attr_token.type == "name": - return nodes.Getattr( - node, attr_token.value, "load", lineno=token.lineno - ) - elif attr_token.type != "integer": - self.fail("expected name or number", attr_token.lineno) - arg = nodes.Const(attr_token.value, lineno=attr_token.lineno) - return nodes.Getitem(node, arg, "load", lineno=token.lineno) - if token.type == "lbracket": - args = [] - while self.stream.current.type != "rbracket": - if args: - self.stream.expect("comma") - args.append(self.parse_subscribed()) - self.stream.expect("rbracket") - if len(args) == 1: - arg = args[0] - else: - arg = nodes.Tuple(args, "load", lineno=token.lineno) - return nodes.Getitem(node, arg, "load", lineno=token.lineno) - self.fail("expected subscript expression", token.lineno) - - def parse_subscribed(self): - lineno = self.stream.current.lineno - - if self.stream.current.type == "colon": - next(self.stream) - args = [None] - else: - node = self.parse_expression() - if self.stream.current.type != "colon": - return node - next(self.stream) - args = [node] - - if self.stream.current.type == "colon": - args.append(None) - elif self.stream.current.type not in ("rbracket", "comma"): - args.append(self.parse_expression()) - else: - args.append(None) - - if self.stream.current.type == "colon": - next(self.stream) - if self.stream.current.type not in ("rbracket", "comma"): - args.append(self.parse_expression()) - else: - args.append(None) - else: - args.append(None) - - return nodes.Slice(lineno=lineno, *args) - - def parse_call(self, node): - token = self.stream.expect("lparen") - args = [] - kwargs = [] - dyn_args = dyn_kwargs = None - require_comma = False - - def ensure(expr): - if not expr: - self.fail("invalid syntax for function call expression", token.lineno) - - while self.stream.current.type != "rparen": - if require_comma: - self.stream.expect("comma") - # support for trailing comma - if self.stream.current.type == "rparen": - break - if self.stream.current.type == "mul": - ensure(dyn_args is None and dyn_kwargs is None) - next(self.stream) - dyn_args = self.parse_expression() - elif self.stream.current.type == "pow": - ensure(dyn_kwargs is None) - next(self.stream) - dyn_kwargs = self.parse_expression() - else: - if ( - self.stream.current.type == "name" - and self.stream.look().type == "assign" - ): - # Parsing a kwarg - ensure(dyn_kwargs is None) - key = self.stream.current.value - self.stream.skip(2) - value = self.parse_expression() - kwargs.append(nodes.Keyword(key, value, lineno=value.lineno)) - else: - # Parsing an arg - ensure(dyn_args is None and dyn_kwargs is None and not kwargs) - args.append(self.parse_expression()) - - require_comma = True - self.stream.expect("rparen") - - if node is None: - return args, kwargs, dyn_args, dyn_kwargs - return nodes.Call(node, args, kwargs, dyn_args, dyn_kwargs, lineno=token.lineno) - - def parse_filter(self, node, start_inline=False): - while self.stream.current.type == "pipe" or start_inline: - if not start_inline: - next(self.stream) - token = self.stream.expect("name") - name = token.value - while self.stream.current.type == "dot": - next(self.stream) - name += "." + self.stream.expect("name").value - if self.stream.current.type == "lparen": - args, kwargs, dyn_args, dyn_kwargs = self.parse_call(None) - else: - args = [] - kwargs = [] - dyn_args = dyn_kwargs = None - node = nodes.Filter( - node, name, args, kwargs, dyn_args, dyn_kwargs, lineno=token.lineno - ) - start_inline = False - return node - - def parse_test(self, node): - token = next(self.stream) - if self.stream.current.test("name:not"): - next(self.stream) - negated = True - else: - negated = False - name = self.stream.expect("name").value - while self.stream.current.type == "dot": - next(self.stream) - name += "." + self.stream.expect("name").value - dyn_args = dyn_kwargs = None - kwargs = [] - if self.stream.current.type == "lparen": - args, kwargs, dyn_args, dyn_kwargs = self.parse_call(None) - elif self.stream.current.type in ( - "name", - "string", - "integer", - "float", - "lparen", - "lbracket", - "lbrace", - ) and not self.stream.current.test_any("name:else", "name:or", "name:and"): - if self.stream.current.test("name:is"): - self.fail("You cannot chain multiple tests with is") - arg_node = self.parse_primary() - arg_node = self.parse_postfix(arg_node) - args = [arg_node] - else: - args = [] - node = nodes.Test( - node, name, args, kwargs, dyn_args, dyn_kwargs, lineno=token.lineno - ) - if negated: - node = nodes.Not(node, lineno=token.lineno) - return node - - def subparse(self, end_tokens=None): - body = [] - data_buffer = [] - add_data = data_buffer.append - - if end_tokens is not None: - self._end_token_stack.append(end_tokens) - - def flush_data(): - if data_buffer: - lineno = data_buffer[0].lineno - body.append(nodes.Output(data_buffer[:], lineno=lineno)) - del data_buffer[:] - - try: - while self.stream: - token = self.stream.current - if token.type == "data": - if token.value: - add_data(nodes.TemplateData(token.value, lineno=token.lineno)) - next(self.stream) - elif token.type == "variable_begin": - next(self.stream) - add_data(self.parse_tuple(with_condexpr=True)) - self.stream.expect("variable_end") - elif token.type == "block_begin": - flush_data() - next(self.stream) - if end_tokens is not None and self.stream.current.test_any( - *end_tokens - ): - return body - rv = self.parse_statement() - if isinstance(rv, list): - body.extend(rv) - else: - body.append(rv) - self.stream.expect("block_end") - else: - raise AssertionError("internal parsing error") - - flush_data() - finally: - if end_tokens is not None: - self._end_token_stack.pop() - - return body - - def parse(self): - """Parse the whole template into a `Template` node.""" - result = nodes.Template(self.subparse(), lineno=1) - result.set_environment(self.environment) - return result |