示例#1
0
    def visit_Nonlocal(self, nonl):
        for name in nonl.names:
            old_role = self.scope.lookup_role(name)
            msg = ""
            if old_role & SYM_GLOBAL:
                msg = "name '%s' is nonlocal and global" % (name, )
            if old_role & SYM_PARAM:
                msg = "name '%s' is parameter and nonlocal" % (name, )
            if isinstance(self.scope, ModuleScope):
                msg = "nonlocal declaration not allowed at module level"
            if msg is not "":
                raise SyntaxError(msg, nonl.lineno, nonl.col_offset)

            if (old_role & (SYM_USED | SYM_ASSIGNED)
                    and not (name == '__class__'
                             and self.scope._hide_bound_from_nested_scopes)):
                if old_role & SYM_ASSIGNED:
                    msg = "name '%s' is assigned to before nonlocal declaration" \
                        % (name,)
                else:
                    msg = "name '%s' is used prior to nonlocal declaration" % \
                        (name,)
                misc.syntax_warning(self.space, msg,
                                    self.compile_info.filename, nonl.lineno,
                                    nonl.col_offset)

            self.note_symbol(name, SYM_NONLOCAL)
示例#2
0
    def visit_Global(self, glob):
        for name in glob.names:
            old_role = self.scope.lookup_role(name)
            if (self.scope._hide_bound_from_nested_scopes
                    and name == '__class__'):
                msg = ("'global __class__' inside a class statement is not "
                       "implemented in PyPy")
                raise SyntaxError(msg,
                                  glob.lineno,
                                  glob.col_offset,
                                  filename=self.compile_info.filename)
            if old_role & SYM_PARAM:
                msg = "name '%s' is parameter and global" % (name, )
                raise SyntaxError(msg, glob.lineno, glob.col_offset)
            if old_role & SYM_NONLOCAL:
                msg = "name '%s' is nonlocal and global" % (name, )
                raise SyntaxError(msg, glob.lineno, glob.col_offset)

            if old_role & (SYM_USED | SYM_ASSIGNED):
                if old_role & SYM_ASSIGNED:
                    msg = "name '%s' is assigned to before global declaration"\
                        % (name,)
                else:
                    msg = "name '%s' is used prior to global declaration" % \
                        (name,)
                misc.syntax_warning(self.space, msg,
                                    self.compile_info.filename, glob.lineno,
                                    glob.col_offset)
            self.note_symbol(name, SYM_GLOBAL)
示例#3
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 def visit_ImportFrom(self, imp):
     for alias in imp.names:
         if self._visit_alias(alias):
             if self.scope.note_import_star(imp):
                 msg = "import * only allowed at module level"
                 misc.syntax_warning(
                     self.space, msg, self.compile_info.filename,
                     imp.lineno, imp.col_offset)
示例#4
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文件: symtable.py 项目: cimarieta/usp
 def visit_Global(self, glob):
     for name in glob.names:
         old_role = self.scope.lookup_role(name)
         if old_role & (SYM_USED | SYM_ASSIGNED):
             if old_role & SYM_ASSIGNED:
                 msg = "name '%s' is assigned to before global declaration" % (name,)
             else:
                 msg = "name '%s' is used prior to global declaration" % (name,)
             misc.syntax_warning(self.space, msg, self.compile_info.filename, glob.lineno, glob.col_offset)
         self.note_symbol(name, SYM_GLOBAL)
示例#5
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 def visit_Global(self, glob):
     for name in glob.names:
         old_role = self.scope.lookup_role(name)
         if old_role & (SYM_USED | SYM_ASSIGNED):
             if old_role & SYM_ASSIGNED:
                 msg = "name '%s' is assigned to before global declaration" \
                     % (name,)
             else:
                 msg = "name '%s' is used prior to global declaration" % \
                     (name,)
             misc.syntax_warning(self.space, msg, self.compile_info.filename,
                                 glob.lineno, glob.col_offset)
         self.note_symbol(name, SYM_GLOBAL)
示例#6
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文件: symtable.py 项目: Qointum/pypy
 def visit_Nonlocal(self, nonl):
     for name in nonl.names:
         old_role = self.scope.lookup_role(name)
         if old_role & (SYM_USED | SYM_ASSIGNED):
             if old_role & SYM_ASSIGNED:
                 msg = "name '%s' is assigned to before nonlocal declaration" \
                     % (name,)
             else:
                 msg = "name '%s' is used prior to nonlocal declaration" % \
                     (name,)
             misc.syntax_warning(self.space, msg, self.compile_info.filename,
                                 nonl.lineno, nonl.col_offset)
         self.note_symbol(name, SYM_NONLOCAL)
示例#7
0
 def visit_Nonlocal(self, nonl):
     for name in nonl.names:
         old_role = self.scope.lookup_role(name)
         if old_role & (SYM_USED | SYM_ASSIGNED):
             if old_role & SYM_ASSIGNED:
                 msg = "name '%s' is assigned to before nonlocal declaration" \
                     % (name,)
             else:
                 msg = "name '%s' is used prior to nonlocal declaration" % \
                     (name,)
             misc.syntax_warning(self.space, msg,
                                 self.compile_info.filename, nonl.lineno,
                                 nonl.col_offset)
         self.note_symbol(name, SYM_NONLOCAL)
示例#8
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 def _visit_comprehension(self, node, comps, *consider):
     outer = comps[0]
     assert isinstance(outer, ast.comprehension)
     outer.iter.walkabout(self)
     new_scope = FunctionScope("<genexpr>", node.lineno, node.col_offset)
     self.push_scope(new_scope, node)
     self.implicit_arg(0)
     outer.target.walkabout(self)
     self.visit_sequence(outer.ifs)
     self.visit_sequence(comps[1:])
     for item in list(consider):
         item.walkabout(self)
     self.pop_scope()
     # http://bugs.python.org/issue10544: was never fixed in CPython,
     # but we can at least issue a SyntaxWarning in the meantime
     if new_scope.is_generator:
         msg = ("'yield' inside a list or generator comprehension behaves "
                "unexpectedly (http://bugs.python.org/issue10544)")
         misc.syntax_warning(self.space, msg, self.compile_info.filename,
                             node.lineno, node.col_offset)