def com_assign_list(self, node, assigning):
assigns = []
for i in range(1, len(node), 2):
if i + 1 < len(node):
if node[i + 1][0] == symbol.list_for:
raise SyntaxError, "can't assign to list comprehension"
assert node[i + 1][0] == token.COMMA, node[i + 1]
assigns.append(self.com_assign(node[i], assigning))
return AssList(assigns, lineno=extractLineNo(node))
python类list_for()的实例源码
def com_list_constructor(self, nodelist):
# listmaker: test ( list_for | (',' test)* [','] )
values = []
for i in range(1, len(nodelist)):
if nodelist[i][0] == symbol.list_for:
assert len(nodelist[i:]) == 1
return self.com_list_comprehension(values[0],
nodelist[i])
elif nodelist[i][0] == token.COMMA:
continue
values.append(self.com_node(nodelist[i]))
return List(values, lineno=values[0].lineno)
def com_assign_list(self, node, assigning):
assigns = []
for i in range(1, len(node), 2):
if i + 1 < len(node):
if node[i + 1][0] == symbol.list_for:
raise SyntaxError, "can't assign to list comprehension"
assert node[i + 1][0] == token.COMMA, node[i + 1]
assigns.append(self.com_assign(node[i], assigning))
return AssList(assigns, lineno=extractLineNo(node))
def com_list_constructor(self, nodelist):
# listmaker: test ( list_for | (',' test)* [','] )
values = []
for i in range(1, len(nodelist)):
if nodelist[i][0] == symbol.list_for:
assert len(nodelist[i:]) == 1
return self.com_list_comprehension(values[0],
nodelist[i])
elif nodelist[i][0] == token.COMMA:
continue
values.append(self.com_node(nodelist[i]))
return List(values, lineno=values[0].lineno)
def com_assign_list(self, node, assigning):
assigns = []
for i in range(1, len(node), 2):
if i + 1 < len(node):
if node[i + 1][0] == symbol.list_for:
raise SyntaxError, "can't assign to list comprehension"
assert node[i + 1][0] == token.COMMA, node[i + 1]
assigns.append(self.com_assign(node[i], assigning))
return AssList(assigns, lineno=extractLineNo(node))
def com_list_constructor(self, nodelist):
# listmaker: test ( list_for | (',' test)* [','] )
values = []
for i in range(1, len(nodelist)):
if nodelist[i][0] == symbol.list_for:
assert len(nodelist[i:]) == 1
return self.com_list_comprehension(values[0],
nodelist[i])
elif nodelist[i][0] == token.COMMA:
continue
values.append(self.com_node(nodelist[i]))
return List(values, lineno=values[0].lineno)
def com_assign_list(self, node, assigning):
assigns = []
for i in range(1, len(node), 2):
if i + 1 < len(node):
if node[i + 1][0] == symbol.list_for:
raise SyntaxError, "can't assign to list comprehension"
assert node[i + 1][0] == token.COMMA, node[i + 1]
assigns.append(self.com_assign(node[i], assigning))
return AssList(assigns, lineno=extractLineNo(node))
def com_list_constructor(self, nodelist):
# listmaker: test ( list_for | (',' test)* [','] )
values = []
for i in range(1, len(nodelist)):
if nodelist[i][0] == symbol.list_for:
assert len(nodelist[i:]) == 1
return self.com_list_comprehension(values[0],
nodelist[i])
elif nodelist[i][0] == token.COMMA:
continue
values.append(self.com_node(nodelist[i]))
return List(values, lineno=values[0].lineno)
def com_assign_list(self, node, assigning):
assigns = []
for i in range(1, len(node), 2):
if i + 1 < len(node):
if node[i + 1][0] == symbol.list_for:
raise SyntaxError, "can't assign to list comprehension"
assert node[i + 1][0] == token.COMMA, node[i + 1]
assigns.append(self.com_assign(node[i], assigning))
return AssList(assigns, lineno=extractLineNo(node))
def com_list_constructor(self, nodelist):
# listmaker: test ( list_for | (',' test)* [','] )
values = []
for i in range(1, len(nodelist)):
if nodelist[i][0] == symbol.list_for:
assert len(nodelist[i:]) == 1
return self.com_list_comprehension(values[0],
nodelist[i])
elif nodelist[i][0] == token.COMMA:
continue
values.append(self.com_node(nodelist[i]))
return List(values, lineno=values[0].lineno)
def com_comprehension(self, expr1, expr2, node, type):
# list_iter: list_for | list_if
# list_for: 'for' exprlist 'in' testlist [list_iter]
# list_if: 'if' test [list_iter]
# XXX should raise SyntaxError for assignment
# XXX(avassalotti) Set and dict comprehensions should have generator
# semantics. In other words, they shouldn't leak
# variables outside of the comprehension's scope.
lineno = node[1][2]
fors = []
while node:
t = node[1][1]
if t == 'for':
assignNode = self.com_assign(node[2], OP_ASSIGN)
compNode = self.com_node(node[4])
newfor = ListCompFor(assignNode, compNode, [])
newfor.lineno = node[1][2]
fors.append(newfor)
if len(node) == 5:
node = None
elif type == 'list':
node = self.com_list_iter(node[5])
else:
node = self.com_comp_iter(node[5])
elif t == 'if':
test = self.com_node(node[2])
newif = ListCompIf(test, lineno=node[1][2])
newfor.ifs.append(newif)
if len(node) == 3:
node = None
elif type == 'list':
node = self.com_list_iter(node[3])
else:
node = self.com_comp_iter(node[3])
else:
raise SyntaxError, \
("unexpected comprehension element: %s %d"
% (node, lineno))
if type == 'list':
return ListComp(expr1, fors, lineno=lineno)
elif type == 'set':
return SetComp(expr1, fors, lineno=lineno)
elif type == 'dict':
return DictComp(expr1, expr2, fors, lineno=lineno)
else:
raise ValueError("unexpected comprehension type: " + repr(type))
def com_comprehension(self, expr1, expr2, node, type):
# list_iter: list_for | list_if
# list_for: 'for' exprlist 'in' testlist [list_iter]
# list_if: 'if' test [list_iter]
# XXX should raise SyntaxError for assignment
# XXX(avassalotti) Set and dict comprehensions should have generator
# semantics. In other words, they shouldn't leak
# variables outside of the comprehension's scope.
lineno = node[1][2]
fors = []
while node:
t = node[1][1]
if t == 'for':
assignNode = self.com_assign(node[2], OP_ASSIGN)
compNode = self.com_node(node[4])
newfor = ListCompFor(assignNode, compNode, [])
newfor.lineno = node[1][2]
fors.append(newfor)
if len(node) == 5:
node = None
elif type == 'list':
node = self.com_list_iter(node[5])
else:
node = self.com_comp_iter(node[5])
elif t == 'if':
test = self.com_node(node[2])
newif = ListCompIf(test, lineno=node[1][2])
newfor.ifs.append(newif)
if len(node) == 3:
node = None
elif type == 'list':
node = self.com_list_iter(node[3])
else:
node = self.com_comp_iter(node[3])
else:
raise SyntaxError, \
("unexpected comprehension element: %s %d"
% (node, lineno))
if type == 'list':
return ListComp(expr1, fors, lineno=lineno)
elif type == 'set':
return SetComp(expr1, fors, lineno=lineno)
elif type == 'dict':
return DictComp(expr1, expr2, fors, lineno=lineno)
else:
raise ValueError("unexpected comprehension type: " + repr(type))
def com_comprehension(self, expr1, expr2, node, type):
# list_iter: list_for | list_if
# list_for: 'for' exprlist 'in' testlist [list_iter]
# list_if: 'if' test [list_iter]
# XXX should raise SyntaxError for assignment
# XXX(avassalotti) Set and dict comprehensions should have generator
# semantics. In other words, they shouldn't leak
# variables outside of the comprehension's scope.
lineno = node[1][2]
fors = []
while node:
t = node[1][1]
if t == 'for':
assignNode = self.com_assign(node[2], OP_ASSIGN)
compNode = self.com_node(node[4])
newfor = ListCompFor(assignNode, compNode, [])
newfor.lineno = node[1][2]
fors.append(newfor)
if len(node) == 5:
node = None
elif type == 'list':
node = self.com_list_iter(node[5])
else:
node = self.com_comp_iter(node[5])
elif t == 'if':
test = self.com_node(node[2])
newif = ListCompIf(test, lineno=node[1][2])
newfor.ifs.append(newif)
if len(node) == 3:
node = None
elif type == 'list':
node = self.com_list_iter(node[3])
else:
node = self.com_comp_iter(node[3])
else:
raise SyntaxError, \
("unexpected comprehension element: %s %d"
% (node, lineno))
if type == 'list':
return ListComp(expr1, fors, lineno=lineno)
elif type == 'set':
return SetComp(expr1, fors, lineno=lineno)
elif type == 'dict':
return DictComp(expr1, expr2, fors, lineno=lineno)
else:
raise ValueError("unexpected comprehension type: " + repr(type))
def com_comprehension(self, expr1, expr2, node, type):
# list_iter: list_for | list_if
# list_for: 'for' exprlist 'in' testlist [list_iter]
# list_if: 'if' test [list_iter]
# XXX should raise SyntaxError for assignment
# XXX(avassalotti) Set and dict comprehensions should have generator
# semantics. In other words, they shouldn't leak
# variables outside of the comprehension's scope.
lineno = node[1][2]
fors = []
while node:
t = node[1][1]
if t == 'for':
assignNode = self.com_assign(node[2], OP_ASSIGN)
compNode = self.com_node(node[4])
newfor = ListCompFor(assignNode, compNode, [])
newfor.lineno = node[1][2]
fors.append(newfor)
if len(node) == 5:
node = None
elif type == 'list':
node = self.com_list_iter(node[5])
else:
node = self.com_comp_iter(node[5])
elif t == 'if':
test = self.com_node(node[2])
newif = ListCompIf(test, lineno=node[1][2])
newfor.ifs.append(newif)
if len(node) == 3:
node = None
elif type == 'list':
node = self.com_list_iter(node[3])
else:
node = self.com_comp_iter(node[3])
else:
raise SyntaxError, \
("unexpected comprehension element: %s %d"
% (node, lineno))
if type == 'list':
return ListComp(expr1, fors, lineno=lineno)
elif type == 'set':
return SetComp(expr1, fors, lineno=lineno)
elif type == 'dict':
return DictComp(expr1, expr2, fors, lineno=lineno)
else:
raise ValueError("unexpected comprehension type: " + repr(type))
def com_comprehension(self, expr1, expr2, node, type):
# list_iter: list_for | list_if
# list_for: 'for' exprlist 'in' testlist [list_iter]
# list_if: 'if' test [list_iter]
# XXX should raise SyntaxError for assignment
# XXX(avassalotti) Set and dict comprehensions should have generator
# semantics. In other words, they shouldn't leak
# variables outside of the comprehension's scope.
lineno = node[1][2]
fors = []
while node:
t = node[1][1]
if t == 'for':
assignNode = self.com_assign(node[2], OP_ASSIGN)
compNode = self.com_node(node[4])
newfor = ListCompFor(assignNode, compNode, [])
newfor.lineno = node[1][2]
fors.append(newfor)
if len(node) == 5:
node = None
elif type == 'list':
node = self.com_list_iter(node[5])
else:
node = self.com_comp_iter(node[5])
elif t == 'if':
test = self.com_node(node[2])
newif = ListCompIf(test, lineno=node[1][2])
newfor.ifs.append(newif)
if len(node) == 3:
node = None
elif type == 'list':
node = self.com_list_iter(node[3])
else:
node = self.com_comp_iter(node[3])
else:
raise SyntaxError, \
("unexpected comprehension element: %s %d"
% (node, lineno))
if type == 'list':
return ListComp(expr1, fors, lineno=lineno)
elif type == 'set':
return SetComp(expr1, fors, lineno=lineno)
elif type == 'dict':
return DictComp(expr1, expr2, fors, lineno=lineno)
else:
raise ValueError("unexpected comprehension type: " + repr(type))
