def compile(self, compiler):
"""
Generates opcodes for the expression:
context.variables[namespaceUri, localName]
where `namespaceUri` is the URI bound to the prefix of the
qualified name for the variable reference.
"""
# Construct the expanded-name tuple
prefix, local = splitqname(self._name)
if prefix:
try:
namespace = compiler.namespaces[prefix]
except KeyError:
raise XPathError(XPathError.UNDEFINED_PREFIX, prefix=prefix)
else:
namespace = None
if (namespace, local) not in compiler.variables:
raise XPathError(XPathError.UNDEFINED_VARIABLE,
variable=self._name,
key=(namespace, local))
# Add the actual opcodes
compiler.emit('LOAD_FAST', 'context', 'LOAD_ATTR', 'variables',
'LOAD_CONST', namespace, 'LOAD_CONST', local,
'BUILD_TUPLE', 2, 'BINARY_SUBSCR')
return
def compile(self, compiler):
"""
Generates opcodes for the expression:
context.variables[namespaceUri, localName]
where `namespaceUri` is the URI bound to the prefix of the
qualified name for the variable reference.
"""
# Construct the expanded-name tuple
prefix, local = splitqname(self._name)
if prefix:
try:
namespace = compiler.namespaces[prefix]
except KeyError:
raise XPathError(XPathError.UNDEFINED_PREFIX, prefix=prefix)
else:
namespace = None
if (namespace, local) not in compiler.variables:
raise XPathError(XPathError.UNDEFINED_VARIABLE,
variable=self._name, key=(namespace, local))
# Add the actual opcodes
compiler.emit('LOAD_FAST', 'context',
'LOAD_ATTR', 'variables',
'LOAD_CONST', namespace,
'LOAD_CONST', local,
'BUILD_TUPLE', 2,
'BINARY_SUBSCR')
return
def expand_qname(self, name):
if not name: return None
prefix, name = splitqname(name)
if prefix:
try:
namespace = self.namespaces[prefix]
except KeyError:
raise XPathError(XPathError.UNDEFINED_PREFIX, prefix=prefix)
else:
namespace = None
return (namespace, name)
def expand_qname(self, name):
if not name: return None
prefix, name = splitqname(name)
if prefix:
try:
namespace = self.namespaces[prefix]
except KeyError:
raise XPathError(XPathError.UNDEFINED_PREFIX, prefix=prefix)
else:
namespace = None
return (namespace, name)
