def run(src, file_path=None):
t0 = time.perf_counter()
msg = ''
try:
ns = {'__name__':'__main__'}
if file_path is not None:
ns['__file__'] = file_path
exec(src, ns)
state = 1
except Exception as exc:
msg = traceback.format_exc()
print(msg, file=sys.stderr)
state = 0
t1 = time.perf_counter()
return state, t0, t1, msg
def render(self, **ns):
"""Returns the HTML code for the template, with the key / values in
the keyword argument ns.
"""
# Set attribute "data" to an instance of class ElementData.
self.data = ElementData(**ns)
# Add names "__write__" and "__render_attr__" to namespace.
ns.update({"__write__": self.write,
"__render_attr__": self.render_attr})
self.html = ""
# Executing the Python code will store HTML code in self.html.
try:
exec(self.python, ns)
except Exception as exc:
msg = traceback.format_exc()
if isinstance(exc, SyntaxError):
line_no = exc.args[2]
else:
tb = exc.traceback
while tb is not None:
line_no = tb.tb_lineno
tb = tb.tb_next
elt = self.line_mapping[line_no]
print("Error rendering the element:")
try:
print(elt.outerHTML)
except AttributeError:
print('no outerHTML for', elt)
print(elt.html)
print(f"{exc.__class__.__name__}: {exc}")
return
# Replace element content by generated html.
# Since we reset outerHTML (this is necessary because the element may
# have dynamic attributes), we must reset the reference to the element
# because self.element would still point to the previous version (cf.
# https://developer.mozilla.org/en-US/docs/Web/API/Element/outerHTML,
# section Notes).
if self.element.nodeType != 9:
rank = self.element.index()
parent = self.element.parent
self.element.outerHTML = self.html
self.element = parent.childNodes[rank]
else:
# If the template is the document, only reset (inner)html
self.element.html = self.html
# Bindings.
self.element.unbind()
callbacks = {}
for callback in self.callbacks:
callbacks[callback.__name__] = callback
# Bindings are specified with the attribute b-on. Its value has the
# form "event1:callback1;event2:callback2".
for element in self.element.select("*[b-on]"):
bindings = element.getAttribute("b-on")
bindings = bindings.split(";")
for binding in bindings:
parts = binding.split(":")
if not len(parts) == 2:
raise TemplateError(f"wrong binding: {binding}")
event, func_name = [x.strip() for x in parts]
if not func_name in callbacks:
print(element.outerHTML)
raise TemplateError(f"unknown callback: {func_name}")
self.on(element, event, callbacks[func_name])
def render(self, **ns):
"""Returns the HTML code for the template, with the key / values in
the keyword argument ns.
"""
# Set attribute "data" to an instance of class ElementData.
self.data = ElementData(**ns)
# Add names "__write__" and "__render_attr__" to namespace.
ns.update({
"__write__": self.write,
"__render_attr__": self.render_attr
})
self.html = ""
# Executing the Python code will store HTML code in self.html.
try:
exec(self.python, ns)
except Exception as exc:
msg = traceback.format_exc()
if isinstance(exc, SyntaxError):
line_no = exc.args[2]
else:
tb = exc.traceback
while tb is not None:
line_no = tb.tb_lineno
tb = tb.tb_next
elt = self.line_mapping[line_no]
print("Error rendering the element:")
try:
print(elt.outerHTML)
except AttributeError:
print('no outerHTML for', elt)
print(elt.html)
print(f"{exc.__class__.__name__}: {exc}")
return
# Replace element content by generated html.
# Since we reset outerHTML (this is necessary because the element may
# have dynamic attributes), we must reset the reference to the element
# because self.element would still point to the previous version (cf.
# https://developer.mozilla.org/en-US/docs/Web/API/Element/outerHTML,
# section Notes).
if self.element.nodeType != 9:
rank = self.element.index()
parent = self.element.parent
self.element.outerHTML = self.html
self.element = parent.childNodes[rank]
else:
# If the template is the document, only reset (inner)html
self.element.html = self.html
# Bindings.
self.element.unbind()
callbacks = {}
for callback in self.callbacks:
callbacks[callback.__name__] = callback
# Bindings are specified with the attribute b-on. Its value has the
# form "event1:callback1;event2:callback2".
for element in self.element.select("*[b-on]"):
bindings = element.getAttribute("b-on")
bindings = bindings.split(";")
for binding in bindings:
parts = binding.split(":")
if not len(parts) == 2:
raise TemplateError(f"wrong binding: {binding}")
event, func_name = [x.strip() for x in parts]
if not func_name in callbacks:
print(element.outerHTML)
raise TemplateError(f"unknown callback: {func_name}")
self.on(element, event, callbacks[func_name])