def __init__(self):
self._dispatch = {}
for value, name in symbol.sym_name.items():
if hasattr(self, name):
self._dispatch[value] = getattr(self, name)
self._dispatch[token.NEWLINE] = self.com_NEWLINE
self._atom_dispatch = {token.LPAR: self.atom_lpar,
token.LSQB: self.atom_lsqb,
token.LBRACE: self.atom_lbrace,
token.BACKQUOTE: self.atom_backquote,
token.NUMBER: self.atom_number,
token.STRING: self.atom_string,
token.NAME: self.atom_name,
}
self.encoding = None
python类LSQB的实例源码
def com_assign_trailer(self, primary, node, assigning):
t = node[1][0]
if t == token.DOT:
return self.com_assign_attr(primary, node[2], assigning)
if t == token.LSQB:
return self.com_subscriptlist(primary, node[2], assigning)
if t == token.LPAR:
raise SyntaxError, "can't assign to function call"
raise SyntaxError, "unknown trailer type: %s" % t
def com_apply_trailer(self, primaryNode, nodelist):
t = nodelist[1][0]
if t == token.LPAR:
return self.com_call_function(primaryNode, nodelist[2])
if t == token.DOT:
return self.com_select_member(primaryNode, nodelist[2])
if t == token.LSQB:
return self.com_subscriptlist(primaryNode, nodelist[2], OP_APPLY)
raise SyntaxError, 'unknown node type: %s' % t
def __init__(self):
self._dispatch = {}
for value, name in symbol.sym_name.items():
if hasattr(self, name):
self._dispatch[value] = getattr(self, name)
self._dispatch[token.NEWLINE] = self.com_NEWLINE
self._atom_dispatch = {token.LPAR: self.atom_lpar,
token.LSQB: self.atom_lsqb,
token.LBRACE: self.atom_lbrace,
token.BACKQUOTE: self.atom_backquote,
token.NUMBER: self.atom_number,
token.STRING: self.atom_string,
token.NAME: self.atom_name,
}
self.encoding = None
def com_assign_trailer(self, primary, node, assigning):
t = node[1][0]
if t == token.DOT:
return self.com_assign_attr(primary, node[2], assigning)
if t == token.LSQB:
return self.com_subscriptlist(primary, node[2], assigning)
if t == token.LPAR:
raise SyntaxError, "can't assign to function call"
raise SyntaxError, "unknown trailer type: %s" % t
def com_apply_trailer(self, primaryNode, nodelist):
t = nodelist[1][0]
if t == token.LPAR:
return self.com_call_function(primaryNode, nodelist[2])
if t == token.DOT:
return self.com_select_member(primaryNode, nodelist[2])
if t == token.LSQB:
return self.com_subscriptlist(primaryNode, nodelist[2], OP_APPLY)
raise SyntaxError, 'unknown node type: %s' % t
def __init__(self):
self._dispatch = {}
for value, name in symbol.sym_name.items():
if hasattr(self, name):
self._dispatch[value] = getattr(self, name)
self._dispatch[token.NEWLINE] = self.com_NEWLINE
self._atom_dispatch = {token.LPAR: self.atom_lpar,
token.LSQB: self.atom_lsqb,
token.LBRACE: self.atom_lbrace,
token.BACKQUOTE: self.atom_backquote,
token.NUMBER: self.atom_number,
token.STRING: self.atom_string,
token.NAME: self.atom_name,
}
self.encoding = None
def com_assign_trailer(self, primary, node, assigning):
t = node[1][0]
if t == token.DOT:
return self.com_assign_attr(primary, node[2], assigning)
if t == token.LSQB:
return self.com_subscriptlist(primary, node[2], assigning)
if t == token.LPAR:
raise SyntaxError, "can't assign to function call"
raise SyntaxError, "unknown trailer type: %s" % t
def com_apply_trailer(self, primaryNode, nodelist):
t = nodelist[1][0]
if t == token.LPAR:
return self.com_call_function(primaryNode, nodelist[2])
if t == token.DOT:
return self.com_select_member(primaryNode, nodelist[2])
if t == token.LSQB:
return self.com_subscriptlist(primaryNode, nodelist[2], OP_APPLY)
raise SyntaxError, 'unknown node type: %s' % t
def __init__(self):
self._dispatch = {}
for value, name in symbol.sym_name.items():
if hasattr(self, name):
self._dispatch[value] = getattr(self, name)
self._dispatch[token.NEWLINE] = self.com_NEWLINE
self._atom_dispatch = {token.LPAR: self.atom_lpar,
token.LSQB: self.atom_lsqb,
token.LBRACE: self.atom_lbrace,
token.BACKQUOTE: self.atom_backquote,
token.NUMBER: self.atom_number,
token.STRING: self.atom_string,
token.NAME: self.atom_name,
}
self.encoding = None
def com_assign_trailer(self, primary, node, assigning):
t = node[1][0]
if t == token.DOT:
return self.com_assign_attr(primary, node[2], assigning)
if t == token.LSQB:
return self.com_subscriptlist(primary, node[2], assigning)
if t == token.LPAR:
raise SyntaxError, "can't assign to function call"
raise SyntaxError, "unknown trailer type: %s" % t
def com_apply_trailer(self, primaryNode, nodelist):
t = nodelist[1][0]
if t == token.LPAR:
return self.com_call_function(primaryNode, nodelist[2])
if t == token.DOT:
return self.com_select_member(primaryNode, nodelist[2])
if t == token.LSQB:
return self.com_subscriptlist(primaryNode, nodelist[2], OP_APPLY)
raise SyntaxError, 'unknown node type: %s' % t
def __init__(self):
self._dispatch = {}
for value, name in symbol.sym_name.items():
if hasattr(self, name):
self._dispatch[value] = getattr(self, name)
self._dispatch[token.NEWLINE] = self.com_NEWLINE
self._atom_dispatch = {token.LPAR: self.atom_lpar,
token.LSQB: self.atom_lsqb,
token.LBRACE: self.atom_lbrace,
token.BACKQUOTE: self.atom_backquote,
token.NUMBER: self.atom_number,
token.STRING: self.atom_string,
token.NAME: self.atom_name,
}
self.encoding = None
def com_assign_trailer(self, primary, node, assigning):
t = node[1][0]
if t == token.DOT:
return self.com_assign_attr(primary, node[2], assigning)
if t == token.LSQB:
return self.com_subscriptlist(primary, node[2], assigning)
if t == token.LPAR:
raise SyntaxError, "can't assign to function call"
raise SyntaxError, "unknown trailer type: %s" % t
def com_apply_trailer(self, primaryNode, nodelist):
t = nodelist[1][0]
if t == token.LPAR:
return self.com_call_function(primaryNode, nodelist[2])
if t == token.DOT:
return self.com_select_member(primaryNode, nodelist[2])
if t == token.LSQB:
return self.com_subscriptlist(primaryNode, nodelist[2], OP_APPLY)
raise SyntaxError, 'unknown node type: %s' % t
def com_assign(self, node, assigning):
# return a node suitable for use as an "lvalue"
# loop to avoid trivial recursion
while 1:
t = node[0]
if t in (symbol.exprlist, symbol.testlist, symbol.testlist_safe, symbol.testlist_comp):
if len(node) > 2:
return self.com_assign_tuple(node, assigning)
node = node[1]
elif t in _assign_types:
if len(node) > 2:
raise SyntaxError, "can't assign to operator"
node = node[1]
elif t == symbol.power:
if node[1][0] != symbol.atom:
raise SyntaxError, "can't assign to operator"
if len(node) > 2:
primary = self.com_node(node[1])
for i in range(2, len(node)-1):
ch = node[i]
if ch[0] == token.DOUBLESTAR:
raise SyntaxError, "can't assign to operator"
primary = self.com_apply_trailer(primary, ch)
return self.com_assign_trailer(primary, node[-1],
assigning)
node = node[1]
elif t == symbol.atom:
t = node[1][0]
if t == token.LPAR:
node = node[2]
if node[0] == token.RPAR:
raise SyntaxError, "can't assign to ()"
elif t == token.LSQB:
node = node[2]
if node[0] == token.RSQB:
raise SyntaxError, "can't assign to []"
return self.com_assign_list(node, assigning)
elif t == token.NAME:
return self.com_assign_name(node[1], assigning)
else:
raise SyntaxError, "can't assign to literal"
else:
raise SyntaxError, "bad assignment (%s)" % t
def com_assign(self, node, assigning):
# return a node suitable for use as an "lvalue"
# loop to avoid trivial recursion
while 1:
t = node[0]
if t in (symbol.exprlist, symbol.testlist, symbol.testlist_safe, symbol.testlist_comp):
if len(node) > 2:
return self.com_assign_tuple(node, assigning)
node = node[1]
elif t in _assign_types:
if len(node) > 2:
raise SyntaxError, "can't assign to operator"
node = node[1]
elif t == symbol.power:
if node[1][0] != symbol.atom:
raise SyntaxError, "can't assign to operator"
if len(node) > 2:
primary = self.com_node(node[1])
for i in range(2, len(node)-1):
ch = node[i]
if ch[0] == token.DOUBLESTAR:
raise SyntaxError, "can't assign to operator"
primary = self.com_apply_trailer(primary, ch)
return self.com_assign_trailer(primary, node[-1],
assigning)
node = node[1]
elif t == symbol.atom:
t = node[1][0]
if t == token.LPAR:
node = node[2]
if node[0] == token.RPAR:
raise SyntaxError, "can't assign to ()"
elif t == token.LSQB:
node = node[2]
if node[0] == token.RSQB:
raise SyntaxError, "can't assign to []"
return self.com_assign_list(node, assigning)
elif t == token.NAME:
return self.com_assign_name(node[1], assigning)
else:
raise SyntaxError, "can't assign to literal"
else:
raise SyntaxError, "bad assignment (%s)" % t
def com_assign(self, node, assigning):
# return a node suitable for use as an "lvalue"
# loop to avoid trivial recursion
while 1:
t = node[0]
if t in (symbol.exprlist, symbol.testlist, symbol.testlist_safe, symbol.testlist_comp):
if len(node) > 2:
return self.com_assign_tuple(node, assigning)
node = node[1]
elif t in _assign_types:
if len(node) > 2:
raise SyntaxError, "can't assign to operator"
node = node[1]
elif t == symbol.power:
if node[1][0] != symbol.atom:
raise SyntaxError, "can't assign to operator"
if len(node) > 2:
primary = self.com_node(node[1])
for i in range(2, len(node)-1):
ch = node[i]
if ch[0] == token.DOUBLESTAR:
raise SyntaxError, "can't assign to operator"
primary = self.com_apply_trailer(primary, ch)
return self.com_assign_trailer(primary, node[-1],
assigning)
node = node[1]
elif t == symbol.atom:
t = node[1][0]
if t == token.LPAR:
node = node[2]
if node[0] == token.RPAR:
raise SyntaxError, "can't assign to ()"
elif t == token.LSQB:
node = node[2]
if node[0] == token.RSQB:
raise SyntaxError, "can't assign to []"
return self.com_assign_list(node, assigning)
elif t == token.NAME:
return self.com_assign_name(node[1], assigning)
else:
raise SyntaxError, "can't assign to literal"
else:
raise SyntaxError, "bad assignment (%s)" % t
def com_assign(self, node, assigning):
# return a node suitable for use as an "lvalue"
# loop to avoid trivial recursion
while 1:
t = node[0]
if t in (symbol.exprlist, symbol.testlist, symbol.testlist_safe, symbol.testlist_comp):
if len(node) > 2:
return self.com_assign_tuple(node, assigning)
node = node[1]
elif t in _assign_types:
if len(node) > 2:
raise SyntaxError, "can't assign to operator"
node = node[1]
elif t == symbol.power:
if node[1][0] != symbol.atom:
raise SyntaxError, "can't assign to operator"
if len(node) > 2:
primary = self.com_node(node[1])
for i in range(2, len(node)-1):
ch = node[i]
if ch[0] == token.DOUBLESTAR:
raise SyntaxError, "can't assign to operator"
primary = self.com_apply_trailer(primary, ch)
return self.com_assign_trailer(primary, node[-1],
assigning)
node = node[1]
elif t == symbol.atom:
t = node[1][0]
if t == token.LPAR:
node = node[2]
if node[0] == token.RPAR:
raise SyntaxError, "can't assign to ()"
elif t == token.LSQB:
node = node[2]
if node[0] == token.RSQB:
raise SyntaxError, "can't assign to []"
return self.com_assign_list(node, assigning)
elif t == token.NAME:
return self.com_assign_name(node[1], assigning)
else:
raise SyntaxError, "can't assign to literal"
else:
raise SyntaxError, "bad assignment (%s)" % t
def test_exact_type(self):
self.assertExactTypeEqual('()', token.LPAR, token.RPAR)
self.assertExactTypeEqual('[]', token.LSQB, token.RSQB)
self.assertExactTypeEqual(':', token.COLON)
self.assertExactTypeEqual(',', token.COMMA)
self.assertExactTypeEqual(';', token.SEMI)
self.assertExactTypeEqual('+', token.PLUS)
self.assertExactTypeEqual('-', token.MINUS)
self.assertExactTypeEqual('*', token.STAR)
self.assertExactTypeEqual('/', token.SLASH)
self.assertExactTypeEqual('|', token.VBAR)
self.assertExactTypeEqual('&', token.AMPER)
self.assertExactTypeEqual('<', token.LESS)
self.assertExactTypeEqual('>', token.GREATER)
self.assertExactTypeEqual('=', token.EQUAL)
self.assertExactTypeEqual('.', token.DOT)
self.assertExactTypeEqual('%', token.PERCENT)
self.assertExactTypeEqual('{}', token.LBRACE, token.RBRACE)
self.assertExactTypeEqual('==', token.EQEQUAL)
self.assertExactTypeEqual('!=', token.NOTEQUAL)
self.assertExactTypeEqual('<=', token.LESSEQUAL)
self.assertExactTypeEqual('>=', token.GREATEREQUAL)
self.assertExactTypeEqual('~', token.TILDE)
self.assertExactTypeEqual('^', token.CIRCUMFLEX)
self.assertExactTypeEqual('<<', token.LEFTSHIFT)
self.assertExactTypeEqual('>>', token.RIGHTSHIFT)
self.assertExactTypeEqual('**', token.DOUBLESTAR)
self.assertExactTypeEqual('+=', token.PLUSEQUAL)
self.assertExactTypeEqual('-=', token.MINEQUAL)
self.assertExactTypeEqual('*=', token.STAREQUAL)
self.assertExactTypeEqual('/=', token.SLASHEQUAL)
self.assertExactTypeEqual('%=', token.PERCENTEQUAL)
self.assertExactTypeEqual('&=', token.AMPEREQUAL)
self.assertExactTypeEqual('|=', token.VBAREQUAL)
self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL)
self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL)
self.assertExactTypeEqual('<<=', token.LEFTSHIFTEQUAL)
self.assertExactTypeEqual('>>=', token.RIGHTSHIFTEQUAL)
self.assertExactTypeEqual('**=', token.DOUBLESTAREQUAL)
self.assertExactTypeEqual('//', token.DOUBLESLASH)
self.assertExactTypeEqual('//=', token.DOUBLESLASHEQUAL)
self.assertExactTypeEqual('@', token.AT)
self.assertExactTypeEqual('a**2+b**2==c**2',
NAME, token.DOUBLESTAR, NUMBER,
token.PLUS,
NAME, token.DOUBLESTAR, NUMBER,
token.EQEQUAL,
NAME, token.DOUBLESTAR, NUMBER)
self.assertExactTypeEqual('{1, 2, 3}',
token.LBRACE,
token.NUMBER, token.COMMA,
token.NUMBER, token.COMMA,
token.NUMBER,
token.RBRACE)
self.assertExactTypeEqual('^(x & 0x1)',
token.CIRCUMFLEX,
token.LPAR,
token.NAME, token.AMPER, token.NUMBER,
token.RPAR)
def com_assign(self, node, assigning):
# return a node suitable for use as an "lvalue"
# loop to avoid trivial recursion
while 1:
t = node[0]
if t in (symbol.exprlist, symbol.testlist, symbol.testlist_safe, symbol.testlist_comp):
if len(node) > 2:
return self.com_assign_tuple(node, assigning)
node = node[1]
elif t in _assign_types:
if len(node) > 2:
raise SyntaxError, "can't assign to operator"
node = node[1]
elif t == symbol.power:
if node[1][0] != symbol.atom:
raise SyntaxError, "can't assign to operator"
if len(node) > 2:
primary = self.com_node(node[1])
for i in range(2, len(node)-1):
ch = node[i]
if ch[0] == token.DOUBLESTAR:
raise SyntaxError, "can't assign to operator"
primary = self.com_apply_trailer(primary, ch)
return self.com_assign_trailer(primary, node[-1],
assigning)
node = node[1]
elif t == symbol.atom:
t = node[1][0]
if t == token.LPAR:
node = node[2]
if node[0] == token.RPAR:
raise SyntaxError, "can't assign to ()"
elif t == token.LSQB:
node = node[2]
if node[0] == token.RSQB:
raise SyntaxError, "can't assign to []"
return self.com_assign_list(node, assigning)
elif t == token.NAME:
return self.com_assign_name(node[1], assigning)
else:
raise SyntaxError, "can't assign to literal"
else:
raise SyntaxError, "bad assignment (%s)" % t
def test_exact_type(self):
self.assertExactTypeEqual('()', token.LPAR, token.RPAR)
self.assertExactTypeEqual('[]', token.LSQB, token.RSQB)
self.assertExactTypeEqual(':', token.COLON)
self.assertExactTypeEqual(',', token.COMMA)
self.assertExactTypeEqual(';', token.SEMI)
self.assertExactTypeEqual('+', token.PLUS)
self.assertExactTypeEqual('-', token.MINUS)
self.assertExactTypeEqual('*', token.STAR)
self.assertExactTypeEqual('/', token.SLASH)
self.assertExactTypeEqual('|', token.VBAR)
self.assertExactTypeEqual('&', token.AMPER)
self.assertExactTypeEqual('<', token.LESS)
self.assertExactTypeEqual('>', token.GREATER)
self.assertExactTypeEqual('=', token.EQUAL)
self.assertExactTypeEqual('.', token.DOT)
self.assertExactTypeEqual('%', token.PERCENT)
self.assertExactTypeEqual('{}', token.LBRACE, token.RBRACE)
self.assertExactTypeEqual('==', token.EQEQUAL)
self.assertExactTypeEqual('!=', token.NOTEQUAL)
self.assertExactTypeEqual('<=', token.LESSEQUAL)
self.assertExactTypeEqual('>=', token.GREATEREQUAL)
self.assertExactTypeEqual('~', token.TILDE)
self.assertExactTypeEqual('^', token.CIRCUMFLEX)
self.assertExactTypeEqual('<<', token.LEFTSHIFT)
self.assertExactTypeEqual('>>', token.RIGHTSHIFT)
self.assertExactTypeEqual('**', token.DOUBLESTAR)
self.assertExactTypeEqual('+=', token.PLUSEQUAL)
self.assertExactTypeEqual('-=', token.MINEQUAL)
self.assertExactTypeEqual('*=', token.STAREQUAL)
self.assertExactTypeEqual('/=', token.SLASHEQUAL)
self.assertExactTypeEqual('%=', token.PERCENTEQUAL)
self.assertExactTypeEqual('&=', token.AMPEREQUAL)
self.assertExactTypeEqual('|=', token.VBAREQUAL)
self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL)
self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL)
self.assertExactTypeEqual('<<=', token.LEFTSHIFTEQUAL)
self.assertExactTypeEqual('>>=', token.RIGHTSHIFTEQUAL)
self.assertExactTypeEqual('**=', token.DOUBLESTAREQUAL)
self.assertExactTypeEqual('//', token.DOUBLESLASH)
self.assertExactTypeEqual('//=', token.DOUBLESLASHEQUAL)
self.assertExactTypeEqual('@', token.AT)
self.assertExactTypeEqual('a**2+b**2==c**2',
NAME, token.DOUBLESTAR, NUMBER,
token.PLUS,
NAME, token.DOUBLESTAR, NUMBER,
token.EQEQUAL,
NAME, token.DOUBLESTAR, NUMBER)
self.assertExactTypeEqual('{1, 2, 3}',
token.LBRACE,
token.NUMBER, token.COMMA,
token.NUMBER, token.COMMA,
token.NUMBER,
token.RBRACE)
self.assertExactTypeEqual('^(x & 0x1)',
token.CIRCUMFLEX,
token.LPAR,
token.NAME, token.AMPER, token.NUMBER,
token.RPAR)
def test_exact_type(self):
self.assertExactTypeEqual('()', token.LPAR, token.RPAR)
self.assertExactTypeEqual('[]', token.LSQB, token.RSQB)
self.assertExactTypeEqual(':', token.COLON)
self.assertExactTypeEqual(',', token.COMMA)
self.assertExactTypeEqual(';', token.SEMI)
self.assertExactTypeEqual('+', token.PLUS)
self.assertExactTypeEqual('-', token.MINUS)
self.assertExactTypeEqual('*', token.STAR)
self.assertExactTypeEqual('/', token.SLASH)
self.assertExactTypeEqual('|', token.VBAR)
self.assertExactTypeEqual('&', token.AMPER)
self.assertExactTypeEqual('<', token.LESS)
self.assertExactTypeEqual('>', token.GREATER)
self.assertExactTypeEqual('=', token.EQUAL)
self.assertExactTypeEqual('.', token.DOT)
self.assertExactTypeEqual('%', token.PERCENT)
self.assertExactTypeEqual('{}', token.LBRACE, token.RBRACE)
self.assertExactTypeEqual('==', token.EQEQUAL)
self.assertExactTypeEqual('!=', token.NOTEQUAL)
self.assertExactTypeEqual('<=', token.LESSEQUAL)
self.assertExactTypeEqual('>=', token.GREATEREQUAL)
self.assertExactTypeEqual('~', token.TILDE)
self.assertExactTypeEqual('^', token.CIRCUMFLEX)
self.assertExactTypeEqual('<<', token.LEFTSHIFT)
self.assertExactTypeEqual('>>', token.RIGHTSHIFT)
self.assertExactTypeEqual('**', token.DOUBLESTAR)
self.assertExactTypeEqual('+=', token.PLUSEQUAL)
self.assertExactTypeEqual('-=', token.MINEQUAL)
self.assertExactTypeEqual('*=', token.STAREQUAL)
self.assertExactTypeEqual('/=', token.SLASHEQUAL)
self.assertExactTypeEqual('%=', token.PERCENTEQUAL)
self.assertExactTypeEqual('&=', token.AMPEREQUAL)
self.assertExactTypeEqual('|=', token.VBAREQUAL)
self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL)
self.assertExactTypeEqual('^=', token.CIRCUMFLEXEQUAL)
self.assertExactTypeEqual('<<=', token.LEFTSHIFTEQUAL)
self.assertExactTypeEqual('>>=', token.RIGHTSHIFTEQUAL)
self.assertExactTypeEqual('**=', token.DOUBLESTAREQUAL)
self.assertExactTypeEqual('//', token.DOUBLESLASH)
self.assertExactTypeEqual('//=', token.DOUBLESLASHEQUAL)
self.assertExactTypeEqual('@', token.AT)
self.assertExactTypeEqual('a**2+b**2==c**2',
NAME, token.DOUBLESTAR, NUMBER,
token.PLUS,
NAME, token.DOUBLESTAR, NUMBER,
token.EQEQUAL,
NAME, token.DOUBLESTAR, NUMBER)
self.assertExactTypeEqual('{1, 2, 3}',
token.LBRACE,
token.NUMBER, token.COMMA,
token.NUMBER, token.COMMA,
token.NUMBER,
token.RBRACE)
self.assertExactTypeEqual('^(x & 0x1)',
token.CIRCUMFLEX,
token.LPAR,
token.NAME, token.AMPER, token.NUMBER,
token.RPAR)
