def test_classdef(self):
def cls(bases=None, keywords=None, starargs=None, kwargs=None,
body=None, decorator_list=None):
if bases is None:
bases = []
if keywords is None:
keywords = []
if body is None:
body = [ast.Pass()]
if decorator_list is None:
decorator_list = []
return ast.ClassDef("myclass", bases, keywords, starargs,
kwargs, body, decorator_list)
self.stmt(cls(bases=[ast.Name("x", ast.Store())]),
"must have Load context")
self.stmt(cls(keywords=[ast.keyword("x", ast.Name("x", ast.Store()))]),
"must have Load context")
self.stmt(cls(starargs=ast.Name("x", ast.Store())),
"must have Load context")
self.stmt(cls(kwargs=ast.Name("x", ast.Store())),
"must have Load context")
self.stmt(cls(body=[]), "empty body on ClassDef")
self.stmt(cls(body=[None]), "None disallowed")
self.stmt(cls(decorator_list=[ast.Name("x", ast.Store())]),
"must have Load context")
python类stmt()的实例源码
def test_try(self):
p = ast.Pass()
t = ast.Try([], [], [], [p])
self.stmt(t, "empty body on Try")
t = ast.Try([ast.Expr(ast.Name("x", ast.Store()))], [], [], [p])
self.stmt(t, "must have Load context")
t = ast.Try([p], [], [], [])
self.stmt(t, "Try has neither except handlers nor finalbody")
t = ast.Try([p], [], [p], [p])
self.stmt(t, "Try has orelse but no except handlers")
t = ast.Try([p], [ast.ExceptHandler(None, "x", [])], [], [])
self.stmt(t, "empty body on ExceptHandler")
e = [ast.ExceptHandler(ast.Name("x", ast.Store()), "y", [p])]
self.stmt(ast.Try([p], e, [], []), "must have Load context")
e = [ast.ExceptHandler(None, "x", [p])]
t = ast.Try([p], e, [ast.Expr(ast.Name("x", ast.Store()))], [p])
self.stmt(t, "must have Load context")
t = ast.Try([p], e, [p], [ast.Expr(ast.Name("x", ast.Store()))])
self.stmt(t, "must have Load context")
def get_ast(source_prog):
"""Returns the ast of the program, with comments converted into string
literals.
Args:
source_prog, string, string version of the source code
"""
wrapped_str = comment_to_str(source_prog, TRANS_PREFIXES)
node = ast.parse(wrapped_str)
add_parent_info(node)
nodeList = [i for i in ast.walk(node) if (isinstance(i, ast.stmt))]
for i in nodeList:
if(hasattr(i,'lineno')):
#i.orig_lineno = 1
temp = getLineNum(i)
if(temp != -1):
i.orig_lineno = temp
#a = 1
nodeList = [i for i in ast.walk(node)]
for i in nodeList:
if(hasattr(i,'parent')):
delattr(i, 'parent')
return node
def test_classdef(self):
def cls(bases=None, keywords=None, starargs=None, kwargs=None,
body=None, decorator_list=None):
if bases is None:
bases = []
if keywords is None:
keywords = []
if body is None:
body = [ast.Pass()]
if decorator_list is None:
decorator_list = []
return ast.ClassDef("myclass", bases, keywords, starargs,
kwargs, body, decorator_list)
self.stmt(cls(bases=[ast.Name("x", ast.Store())]),
"must have Load context")
self.stmt(cls(keywords=[ast.keyword("x", ast.Name("x", ast.Store()))]),
"must have Load context")
self.stmt(cls(starargs=ast.Name("x", ast.Store())),
"must have Load context")
self.stmt(cls(kwargs=ast.Name("x", ast.Store())),
"must have Load context")
self.stmt(cls(body=[]), "empty body on ClassDef")
self.stmt(cls(body=[None]), "None disallowed")
self.stmt(cls(decorator_list=[ast.Name("x", ast.Store())]),
"must have Load context")
def test_try(self):
p = ast.Pass()
t = ast.Try([], [], [], [p])
self.stmt(t, "empty body on Try")
t = ast.Try([ast.Expr(ast.Name("x", ast.Store()))], [], [], [p])
self.stmt(t, "must have Load context")
t = ast.Try([p], [], [], [])
self.stmt(t, "Try has neither except handlers nor finalbody")
t = ast.Try([p], [], [p], [p])
self.stmt(t, "Try has orelse but no except handlers")
t = ast.Try([p], [ast.ExceptHandler(None, "x", [])], [], [])
self.stmt(t, "empty body on ExceptHandler")
e = [ast.ExceptHandler(ast.Name("x", ast.Store()), "y", [p])]
self.stmt(ast.Try([p], e, [], []), "must have Load context")
e = [ast.ExceptHandler(None, "x", [p])]
t = ast.Try([p], e, [ast.Expr(ast.Name("x", ast.Store()))], [p])
self.stmt(t, "must have Load context")
t = ast.Try([p], e, [p], [ast.Expr(ast.Name("x", ast.Store()))])
self.stmt(t, "must have Load context")
def test_classdef(self):
def cls(bases=None, keywords=None, starargs=None, kwargs=None,
body=None, decorator_list=None):
if bases is None:
bases = []
if keywords is None:
keywords = []
if body is None:
body = [ast.Pass()]
if decorator_list is None:
decorator_list = []
return ast.ClassDef("myclass", bases, keywords, starargs,
kwargs, body, decorator_list)
self.stmt(cls(bases=[ast.Name("x", ast.Store())]),
"must have Load context")
self.stmt(cls(keywords=[ast.keyword("x", ast.Name("x", ast.Store()))]),
"must have Load context")
self.stmt(cls(starargs=ast.Name("x", ast.Store())),
"must have Load context")
self.stmt(cls(kwargs=ast.Name("x", ast.Store())),
"must have Load context")
self.stmt(cls(body=[]), "empty body on ClassDef")
self.stmt(cls(body=[None]), "None disallowed")
self.stmt(cls(decorator_list=[ast.Name("x", ast.Store())]),
"must have Load context")
def test_try(self):
p = ast.Pass()
t = ast.Try([], [], [], [p])
self.stmt(t, "empty body on Try")
t = ast.Try([ast.Expr(ast.Name("x", ast.Store()))], [], [], [p])
self.stmt(t, "must have Load context")
t = ast.Try([p], [], [], [])
self.stmt(t, "Try has neither except handlers nor finalbody")
t = ast.Try([p], [], [p], [p])
self.stmt(t, "Try has orelse but no except handlers")
t = ast.Try([p], [ast.ExceptHandler(None, "x", [])], [], [])
self.stmt(t, "empty body on ExceptHandler")
e = [ast.ExceptHandler(ast.Name("x", ast.Store()), "y", [p])]
self.stmt(ast.Try([p], e, [], []), "must have Load context")
e = [ast.ExceptHandler(None, "x", [p])]
t = ast.Try([p], e, [ast.Expr(ast.Name("x", ast.Store()))], [p])
self.stmt(t, "must have Load context")
t = ast.Try([p], e, [p], [ast.Expr(ast.Name("x", ast.Store()))])
self.stmt(t, "must have Load context")
def _is_ast_stmt(node):
return isinstance(node, ast.stmt)
def visit_Module(self, mod):
for stmt in mod.body:
self.visit(stmt)
def _assertTrueorder(self, ast_node, parent_pos):
if not isinstance(ast_node, ast.AST) or ast_node._fields is None:
return
if isinstance(ast_node, (ast.expr, ast.stmt, ast.excepthandler)):
node_pos = (ast_node.lineno, ast_node.col_offset)
self.assertTrue(node_pos >= parent_pos)
parent_pos = (ast_node.lineno, ast_node.col_offset)
for name in ast_node._fields:
value = getattr(ast_node, name)
if isinstance(value, list):
for child in value:
self._assertTrueorder(child, parent_pos)
elif value is not None:
self._assertTrueorder(value, parent_pos)
def test_base_classes(self):
self.assertTrue(issubclass(ast.For, ast.stmt))
self.assertTrue(issubclass(ast.Name, ast.expr))
self.assertTrue(issubclass(ast.stmt, ast.AST))
self.assertTrue(issubclass(ast.expr, ast.AST))
self.assertTrue(issubclass(ast.comprehension, ast.AST))
self.assertTrue(issubclass(ast.Gt, ast.AST))
def generic_visit(self, node):
if (isinstance(node, ast.stmt) and self.references_arg(node)) or isinstance(node, ast.Return):
return self.get_waits() + [node]
return NodeTransformer.generic_visit(self, node)
def _assertTrueorder(self, ast_node, parent_pos):
if not isinstance(ast_node, ast.AST) or ast_node._fields is None:
return
if isinstance(ast_node, (ast.expr, ast.stmt, ast.excepthandler)):
node_pos = (ast_node.lineno, ast_node.col_offset)
self.assertTrue(node_pos >= parent_pos)
parent_pos = (ast_node.lineno, ast_node.col_offset)
for name in ast_node._fields:
value = getattr(ast_node, name)
if isinstance(value, list):
for child in value:
self._assertTrueorder(child, parent_pos)
elif value is not None:
self._assertTrueorder(value, parent_pos)
def test_base_classes(self):
self.assertTrue(issubclass(ast.For, ast.stmt))
self.assertTrue(issubclass(ast.Name, ast.expr))
self.assertTrue(issubclass(ast.stmt, ast.AST))
self.assertTrue(issubclass(ast.expr, ast.AST))
self.assertTrue(issubclass(ast.comprehension, ast.AST))
self.assertTrue(issubclass(ast.Gt, ast.AST))
def _assertTrueorder(self, ast_node, parent_pos):
if not isinstance(ast_node, ast.AST) or ast_node._fields is None:
return
if isinstance(ast_node, (ast.expr, ast.stmt, ast.excepthandler)):
node_pos = (ast_node.lineno, ast_node.col_offset)
self.assertTrue(node_pos >= parent_pos)
parent_pos = (ast_node.lineno, ast_node.col_offset)
for name in ast_node._fields:
value = getattr(ast_node, name)
if isinstance(value, list):
for child in value:
self._assertTrueorder(child, parent_pos)
elif value is not None:
self._assertTrueorder(value, parent_pos)
def test_base_classes(self):
self.assertTrue(issubclass(ast.For, ast.stmt))
self.assertTrue(issubclass(ast.Name, ast.expr))
self.assertTrue(issubclass(ast.stmt, ast.AST))
self.assertTrue(issubclass(ast.expr, ast.AST))
self.assertTrue(issubclass(ast.comprehension, ast.AST))
self.assertTrue(issubclass(ast.Gt, ast.AST))
def _is_ast_stmt(node):
return isinstance(node, ast.stmt)
def visit_Module(self, mod):
for stmt in mod.body:
self.visit(stmt)
def _assertTrueorder(self, ast_node, parent_pos):
if not isinstance(ast_node, ast.AST) or ast_node._fields is None:
return
if isinstance(ast_node, (ast.expr, ast.stmt, ast.excepthandler)):
node_pos = (ast_node.lineno, ast_node.col_offset)
self.assertTrue(node_pos >= parent_pos)
parent_pos = (ast_node.lineno, ast_node.col_offset)
for name in ast_node._fields:
value = getattr(ast_node, name)
if isinstance(value, list):
for child in value:
self._assertTrueorder(child, parent_pos)
elif value is not None:
self._assertTrueorder(value, parent_pos)
def test_base_classes(self):
self.assertTrue(issubclass(ast.For, ast.stmt))
self.assertTrue(issubclass(ast.Name, ast.expr))
self.assertTrue(issubclass(ast.stmt, ast.AST))
self.assertTrue(issubclass(ast.expr, ast.AST))
self.assertTrue(issubclass(ast.comprehension, ast.AST))
self.assertTrue(issubclass(ast.Gt, ast.AST))
def stmt(self, stmt, msg=None):
mod = ast.Module([stmt])
self.mod(mod, msg)
def test_funcdef(self):
a = ast.arguments([], None, None, [], None, None, [], [])
f = ast.FunctionDef("x", a, [], [], None)
self.stmt(f, "empty body on FunctionDef")
f = ast.FunctionDef("x", a, [ast.Pass()], [ast.Name("x", ast.Store())],
None)
self.stmt(f, "must have Load context")
f = ast.FunctionDef("x", a, [ast.Pass()], [],
ast.Name("x", ast.Store()))
self.stmt(f, "must have Load context")
def fac(args):
return ast.FunctionDef("x", args, [ast.Pass()], [], None)
self._check_arguments(fac, self.stmt)
def test_assign(self):
self.stmt(ast.Assign([], ast.Num(3)), "empty targets on Assign")
self.stmt(ast.Assign([None], ast.Num(3)), "None disallowed")
self.stmt(ast.Assign([ast.Name("x", ast.Load())], ast.Num(3)),
"must have Store context")
self.stmt(ast.Assign([ast.Name("x", ast.Store())],
ast.Name("y", ast.Store())),
"must have Load context")
def test_augassign(self):
aug = ast.AugAssign(ast.Name("x", ast.Load()), ast.Add(),
ast.Name("y", ast.Load()))
self.stmt(aug, "must have Store context")
aug = ast.AugAssign(ast.Name("x", ast.Store()), ast.Add(),
ast.Name("y", ast.Store()))
self.stmt(aug, "must have Load context")
def test_for(self):
x = ast.Name("x", ast.Store())
y = ast.Name("y", ast.Load())
p = ast.Pass()
self.stmt(ast.For(x, y, [], []), "empty body on For")
self.stmt(ast.For(ast.Name("x", ast.Load()), y, [p], []),
"must have Store context")
self.stmt(ast.For(x, ast.Name("y", ast.Store()), [p], []),
"must have Load context")
e = ast.Expr(ast.Name("x", ast.Store()))
self.stmt(ast.For(x, y, [e], []), "must have Load context")
self.stmt(ast.For(x, y, [p], [e]), "must have Load context")
def test_while(self):
self.stmt(ast.While(ast.Num(3), [], []), "empty body on While")
self.stmt(ast.While(ast.Name("x", ast.Store()), [ast.Pass()], []),
"must have Load context")
self.stmt(ast.While(ast.Num(3), [ast.Pass()],
[ast.Expr(ast.Name("x", ast.Store()))]),
"must have Load context")
def test_if(self):
self.stmt(ast.If(ast.Num(3), [], []), "empty body on If")
i = ast.If(ast.Name("x", ast.Store()), [ast.Pass()], [])
self.stmt(i, "must have Load context")
i = ast.If(ast.Num(3), [ast.Expr(ast.Name("x", ast.Store()))], [])
self.stmt(i, "must have Load context")
i = ast.If(ast.Num(3), [ast.Pass()],
[ast.Expr(ast.Name("x", ast.Store()))])
self.stmt(i, "must have Load context")
def test_raise(self):
r = ast.Raise(None, ast.Num(3))
self.stmt(r, "Raise with cause but no exception")
r = ast.Raise(ast.Name("x", ast.Store()), None)
self.stmt(r, "must have Load context")
r = ast.Raise(ast.Num(4), ast.Name("x", ast.Store()))
self.stmt(r, "must have Load context")
def test_assert(self):
self.stmt(ast.Assert(ast.Name("x", ast.Store()), None),
"must have Load context")
assrt = ast.Assert(ast.Name("x", ast.Load()),
ast.Name("y", ast.Store()))
self.stmt(assrt, "must have Load context")
def test_import(self):
self.stmt(ast.Import([]), "empty names on Import")
