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Code Issues 32 Releases Wiki Activity

new-admin: Negligible syntax changes in django.core.template in preparation for merge to trunk

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git-svn-id: http://code.djangoproject.com/svn/django/branches/new-admin@1372 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Adrian Holovaty 2005-11-23 19:05:55 +00:00
parent 855d9909c6
commit c18d99735e
5 changed files with 54 additions and 53 deletions
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74
django/core/template/__init__.py
View File

@ -74,7 +74,8 @@ VARIABLE_TAG_END = '}}'
ALLOWED_VARIABLE_CHARS = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_.'
#What to report as the origin of templates that come from non loader sources (ie strings)
# what to report as the origin for templates that come from non-loader sources
# (e.g. strings)
UNKNOWN_SOURCE="<unknown source>"
# match a variable or block tag and capture the entire tag, including start/end delimiters
@ -107,7 +108,7 @@ class SilentVariableFailure(Exception):
class Origin(object):
def __init__(self, name):
self.name = name
def reload(self):
raise NotImplementedException
@ -118,7 +119,7 @@ class StringOrigin(Origin):
def __init__(self, source):
super(StringOrigin, self).__init__(UNKNOWN_SOURCE)
self.source = source
def reload(self):
return self.source
@ -127,9 +128,10 @@ class Template:
"Compilation stage"
if TEMPLATE_DEBUG and origin == None:
origin = StringOrigin(template_string)
#Could do some crazy stack frame stuff to record where this string came from...
# Could do some crazy stack-frame stuff to record where this string
# came from...
self.nodelist = compile_string(template_string, origin)
def __iter__(self):
for node in self.nodelist:
for subnode in node:
@ -140,7 +142,7 @@ class Template:
return self.nodelist.render(context)
def compile_string(template_string, origin):
"Compiles template_string into NodeList ready for rendering"
"Compiles template_string into NodeList ready for rendering"
lexer = lexer_factory(template_string, origin)
parser = parser_factory(lexer.tokenize())
return parser.parse()
@ -186,7 +188,7 @@ class Context:
if dict.has_key(key):
return True
return False
def get(self, key, otherwise):
for dict in self.dicts:
if dict.has_key(key):
@ -204,13 +206,13 @@ class Token:
def __str__(self):
return '<%s token: "%s...">' % (
{TOKEN_TEXT:'Text', TOKEN_VAR:'Var', TOKEN_BLOCK:'Block'}[self.token_type],
{TOKEN_TEXT: 'Text', TOKEN_VAR: 'Var', TOKEN_BLOCK: 'Block'}[self.token_type],
self.contents[:20].replace('\n', '')
)
def __repr__(self):
return '<%s token: "%s">' % (
{TOKEN_TEXT:'Text', TOKEN_VAR:'Var', TOKEN_BLOCK:'Block'}[self.token_type],
{TOKEN_TEXT: 'Text', TOKEN_VAR: 'Var', TOKEN_BLOCK: 'Block'}[self.token_type],
self.contents[:].replace('\n', '')
)
@ -218,13 +220,13 @@ class Lexer(object):
def __init__(self, template_string, origin):
self.template_string = template_string
self.origin = origin
def tokenize(self):
"Return a list of tokens from a given template_string"
# remove all empty strings, because the regex has a tendency to add them
bits = filter(None, tag_re.split(self.template_string))
return map(self.create_token, bits)
def create_token(self,token_string):
"Convert the given token string into a new Token object and return it"
if token_string.startswith(VARIABLE_TAG_START):
@ -233,26 +235,26 @@ class Lexer(object):
token = Token(TOKEN_BLOCK, token_string[len(BLOCK_TAG_START):-len(BLOCK_TAG_END)].strip())
else:
token = Token(TOKEN_TEXT, token_string)
return token
return token
class DebugLexer(Lexer):
def __init__(self, template_string, origin):
super(DebugLexer,self).__init__(template_string, origin)
super(DebugLexer, self).__init__(template_string, origin)
def tokenize(self):
"Return a list of tokens from a given template_string"
token_tups, upto = [], 0
for match in tag_re.finditer(self.template_string):
start, end = match.span()
if start > upto:
token_tups.append( (self.template_string[upto:start], (upto, start) ) )
if start > upto:
token_tups.append( (self.template_string[upto:start], (upto, start)) )
upto = start
token_tups.append( (self.template_string[start:end], (start,end) ) )
token_tups.append( (self.template_string[start:end], (start,end)) )
upto = end
last_bit = self.template_string[upto:]
if last_bit:
token_tups.append( (last_bit, (upto, upto + len(last_bit) ) ) )
return [ self.create_token(tok, (self.origin, loc)) for tok, loc in token_tups]
token_tups.append( (last_bit, (upto, upto + len(last_bit))) )
return [self.create_token(tok, (self.origin, loc)) for tok, loc in token_tups]
def create_token(self, token_string, source):
token = super(DebugLexer, self).create_token(token_string)
@ -288,7 +290,7 @@ class Parser(object):
try:
compile_func = registered_tags[command]
except KeyError:
self.invalid_block_tag(token, command)
self.invalid_block_tag(token, command)
try:
compiled_result = compile_func(self, token)
except TemplateSyntaxError, e:
@ -305,13 +307,13 @@ class Parser(object):
def create_nodelist(self):
return NodeList()
def extend_nodelist(self, nodelist, node, token):
nodelist.append(node)
def enter_command(self, command, token):
pass
def exit_command(self):
pass
@ -320,19 +322,19 @@ class Parser(object):
def empty_variable(self, token):
raise self.error( token, "Empty variable tag")
def empty_block_tag(self, token):
raise self.error( token, "Empty block tag")
def invalid_block_tag(self, token, command):
raise self.error( token, "Invalid block tag: '%s'" % command)
def unclosed_block_tag(self, parse_until):
raise self.error(None, "Unclosed tags: %s " % ', '.join(parse_until))
def compile_function_error(self, token, e):
pass
def next_token(self):
return self.tokens.pop(0)
@ -341,7 +343,7 @@ class Parser(object):
def delete_first_token(self):
del self.tokens[0]
class DebugParser(Parser):
def __init__(self, lexer):
super(DebugParser, self).__init__(lexer)
@ -349,7 +351,7 @@ class DebugParser(Parser):
def enter_command(self, command, token):
self.command_stack.append( (command, token.source) )
def exit_command(self):
self.command_stack.pop()
@ -370,11 +372,10 @@ class DebugParser(Parser):
def extend_nodelist(self, nodelist, node, token):
node.source = token.source
super(DebugParser, self).extend_nodelist(nodelist, node, token)
def unclosed_block_tag(self, parse_until):
(command, source) = self.command_stack.pop()
msg = "Unclosed tag '%s'. Looking for one of: %s " % \
(command, ', '.join(parse_until) )
msg = "Unclosed tag '%s'. Looking for one of: %s " % (command, ', '.join(parse_until))
raise self.source_error( source, msg)
def compile_function_error(self, token, e):
@ -661,15 +662,14 @@ filter_raw_string = r"""
'filter_sep': re.escape(FILTER_SEPARATOR),
'arg_sep': re.escape(FILTER_ARGUMENT_SEPARATOR),
'i18n_open' : re.escape("_("),
'i18n_close' : re.escape(")"),
'i18n_close' : re.escape(")"),
}
filter_raw_string = filter_raw_string.replace("\n", "").replace(" ", "")
filter_re = re.compile(filter_raw_string)
class RegexFilterParser(object):
""" Not used yet because of i18n"""
"Not used yet because of i18n"
def __init__(self, token):
matches = filter_re.finditer(token)
var = None
@ -827,7 +827,7 @@ class DebugNodeList(NodeList):
raise
except Exception:
from sys import exc_info
wrapped = TemplateSyntaxError( 'Caught exception whilst rendering' )
wrapped = TemplateSyntaxError('Caught an exception while rendering.')
wrapped.source = node.source
wrapped.exc_info = exc_info()
raise wrapped
@ -858,7 +858,7 @@ class VariableNode(Node):
return output.encode(DEFAULT_CHARSET)
else:
return output
def render(self, context):
output = resolve_variable_with_filters(self.var_string, context)
return self.encode_output(output)

2
django/core/template/defaulttags.py
View File

@ -192,7 +192,7 @@ class RegroupNode(Node):
for obj in obj_list:
grouper = resolve_variable_with_filters('var.%s' % self.expression, \
Context({'var': obj}))
#TODO: Is this a sensible way to determine equality?
# TODO: Is this a sensible way to determine equality?
if output and repr(output[-1]['grouper']) == repr(grouper):
output[-1]['list'].append(obj)
else:

27
django/core/template/loader.py
View File

@ -7,9 +7,10 @@
#
# name is the template name.
# dirs is an optional list of directories to search instead of TEMPLATE_DIRS.
#
# The loader should return a tuple of (template_source, path). The path returned
# will be shown to the user for debugging purposes, so it should identify where the template
# was loaded from.
# might be shown to the user for debugging purposes, so it should identify where
# the template was loaded from.
#
# Each loader should have an "is_usable" attribute set. This is a boolean that
# specifies whether the loader can be used in this Python installation. Each
@ -45,7 +46,7 @@ class LoaderOrigin(Origin):
def __init__(self, display_name, loader, name, dirs):
super(LoaderOrigin, self).__init__(display_name)
self.loader, self.loadname, self.dirs = loader, name, dirs
def reload(self):
return self.loader(self.loadname, self.dirs)[0]
@ -89,7 +90,7 @@ def render_to_string(template_name, dictionary=None, context_instance=None):
Loads the given template_name and renders it with the given dictionary as
context. The template_name may be a string to load a single template using
get_template, or it may be a tuple to use select_template to find one of
the templates in the list. Returns a string.
the templates in the list. Returns a string.
"""
dictionary = dictionary or {}
if isinstance(template_name, (list, tuple)):
@ -99,7 +100,7 @@ def render_to_string(template_name, dictionary=None, context_instance=None):
if context_instance:
context_instance.update(dictionary)
else:
context_instance = Context(dictionary)
context_instance = Context(dictionary)
return t.render(context_instance)
def select_template(template_name_list):
@ -185,26 +186,26 @@ class ConstantIncludeNode(Node):
def __init__(self, template_path):
try:
t = get_template(template_path)
self.nodelist = t.nodelist
self.template = t
except Exception, e:
if TEMPLATE_DEBUG:
raise
self.nodelist = None
self.template = None
def render(self, context):
if self.nodelist:
return self.nodelist.render(context)
if self.template:
return self.template.render(context)
else:
return ''
class IncludeNode(Node):
def __init__(self, template_path_var):
self.template_path_var = template_path_var
def __init__(self, template_name):
self.template_name = template_name
def render(self, context):
try:
template_path = resolve_variable(self.template_path_var, context)
t = get_template(template_path)
template_name = resolve_variable(self.template_name, context)
t = get_template(template_name)
return t.render(context)
except Exception, e:
if TEMPLATE_DEBUG:

2
django/core/template/loaders/app_directories.py
View File

@ -23,7 +23,7 @@ for app in INSTALLED_APPS:
template_dir = os.path.join(os.path.dirname(mod.__file__), 'templates')
if os.path.isdir(template_dir):
app_template_dirs.append(template_dir)
# It won't change, so convert it to a tuple to save memory.
app_template_dirs = tuple(app_template_dirs)

2
django/core/template/loaders/eggs.py
View File

@ -18,7 +18,7 @@ def load_template_source(template_name, template_dirs=None):
pkg_name = 'templates/' + template_name + TEMPLATE_FILE_EXTENSION
for app in INSTALLED_APPS:
try:
return (resource_string(app, pkg_name), 'egg:%s:%s ' % (app, pkg_name))
return (resource_string(app, pkg_name), 'egg:%s:%s ' % (app, pkg_name))
except:
pass
raise TemplateDoesNotExist, template_name