python, hg: tow outside the environment.

they've served us well, and can ride off into the sunset.

1 files changed, 0 insertions, 252 deletions

diff --git a/sys/lib/python/symtable.py b/sys/lib/python/symtable.py
deleted file mode 100644
index 3f1332e8e..000000000
--- a/sys/lib/python/symtable.py
+++ /dev/null
@@ -1,252 +0,0 @@
-"""Interface to the compiler's internal symbol tables"""
-
-import _symtable
-from _symtable import USE, DEF_GLOBAL, DEF_LOCAL, DEF_PARAM, \
-     DEF_STAR, DEF_DOUBLESTAR, DEF_INTUPLE, DEF_FREE, \
-     DEF_FREE_GLOBAL, DEF_FREE_CLASS, DEF_IMPORT, DEF_BOUND, \
-     OPT_IMPORT_STAR, OPT_EXEC, OPT_BARE_EXEC
-
-import weakref
-
-__all__ = ["symtable", "SymbolTable", "newSymbolTable", "Class",
-           "Function", "Symbol"]
-
-def symtable(code, filename, compile_type):
-    raw = _symtable.symtable(code, filename, compile_type)
-    for top in raw.itervalues():
-        if top.name == 'top':
-            break
-    return newSymbolTable(top, filename)
-
-class SymbolTableFactory:
-    def __init__(self):
-        self.__memo = weakref.WeakValueDictionary()
-
-    def new(self, table, filename):
-        if table.type == _symtable.TYPE_FUNCTION:
-            return Function(table, filename)
-        if table.type == _symtable.TYPE_CLASS:
-            return Class(table, filename)
-        return SymbolTable(table, filename)
-
-    def __call__(self, table, filename):
-        key = table, filename
-        obj = self.__memo.get(key, None)
-        if obj is None:
-            obj = self.__memo[key] = self.new(table, filename)
-        return obj
-
-newSymbolTable = SymbolTableFactory()
-
-def is_free(flags):
-    if (flags & (USE | DEF_FREE)) \
-       and (flags & (DEF_LOCAL | DEF_PARAM | DEF_GLOBAL)):
-        return True
-    if flags & DEF_FREE_CLASS:
-        return True
-    return False
-
-class SymbolTable:
-    def __init__(self, raw_table, filename):
-        self._table = raw_table
-        self._filename = filename
-        self._symbols = {}
-
-    def __repr__(self):
-        if self.__class__ == SymbolTable:
-            kind = ""
-        else:
-            kind = "%s " % self.__class__.__name__
-
-        if self._table.name == "global":
-            return "<%sSymbolTable for module %s>" % (kind, self._filename)
-        else:
-            return "<%sSymbolTable for %s in %s>" % (kind, self._table.name,
-                                                     self._filename)
-
-    def get_type(self):
-        if self._table.type == _symtable.TYPE_MODULE:
-            return "module"
-        if self._table.type == _symtable.TYPE_FUNCTION:
-            return "function"
-        if self._table.type == _symtable.TYPE_CLASS:
-            return "class"
-        assert self._table.type in (1, 2, 3), \
-               "unexpected type: %s" % self._table.type
-
-    def get_id(self):
-        return self._table.id
-
-    def get_name(self):
-        return self._table.name
-
-    def get_lineno(self):
-        return self._table.lineno
-
-    def is_optimized(self):
-        return bool(self._table.type == _symtable.TYPE_FUNCTION
-                    and not self._table.optimized)
-
-    def is_nested(self):
-        return bool(self._table.nested)
-
-    def has_children(self):
-        return bool(self._table.children)
-
-    def has_exec(self):
-        """Return true if the scope uses exec"""
-        return bool(self._table.optimized & (OPT_EXEC | OPT_BARE_EXEC))
-
-    def has_import_star(self):
-        """Return true if the scope uses import *"""
-        return bool(self._table.optimized & OPT_IMPORT_STAR)
-
-    def get_identifiers(self):
-        return self._table.symbols.keys()
-
-    def lookup(self, name):
-        sym = self._symbols.get(name)
-        if sym is None:
-            flags = self._table.symbols[name]
-            namespaces = self.__check_children(name)
-            sym = self._symbols[name] = Symbol(name, flags, namespaces)
-        return sym
-
-    def get_symbols(self):
-        return [self.lookup(ident) for ident in self.get_identifiers()]
-
-    def __check_children(self, name):
-        return [newSymbolTable(st, self._filename)
-                for st in self._table.children
-                if st.name == name]
-
-    def get_children(self):
-        return [newSymbolTable(st, self._filename)
-                for st in self._table.children]
-
-class Function(SymbolTable):
-
-    # Default values for instance variables
-    __params = None
-    __locals = None
-    __frees = None
-    __globals = None
-
-    def __idents_matching(self, test_func):
-        return tuple([ident for ident in self.get_identifiers()
-                      if test_func(self._table.symbols[ident])])
-
-    def get_parameters(self):
-        if self.__params is None:
-            self.__params = self.__idents_matching(lambda x:x & DEF_PARAM)
-        return self.__params
-
-    def get_locals(self):
-        if self.__locals is None:
-            self.__locals = self.__idents_matching(lambda x:x & DEF_BOUND)
-        return self.__locals
-
-    def get_globals(self):
-        if self.__globals is None:
-            glob = DEF_GLOBAL | DEF_FREE_GLOBAL
-            self.__globals = self.__idents_matching(lambda x:x & glob)
-        return self.__globals
-
-    def get_frees(self):
-        if self.__frees is None:
-            self.__frees = self.__idents_matching(is_free)
-        return self.__frees
-
-class Class(SymbolTable):
-
-    __methods = None
-
-    def get_methods(self):
-        if self.__methods is None:
-            d = {}
-            for st in self._table.children:
-                d[st.name] = 1
-            self.__methods = tuple(d)
-        return self.__methods
-
-class Symbol:
-    def __init__(self, name, flags, namespaces=None):
-        self.__name = name
-        self.__flags = flags
-        self.__namespaces = namespaces or ()
-
-    def __repr__(self):
-        return "<symbol '%s'>" % self.__name
-
-    def get_name(self):
-        return self.__name
-
-    def is_referenced(self):
-        return bool(self.__flags & _symtable.USE)
-
-    def is_parameter(self):
-        return bool(self.__flags & DEF_PARAM)
-
-    def is_global(self):
-        return bool((self.__flags & DEF_GLOBAL)
-                    or (self.__flags & DEF_FREE_GLOBAL))
-
-    def is_vararg(self):
-        return bool(self.__flags & DEF_STAR)
-
-    def is_keywordarg(self):
-        return bool(self.__flags & DEF_DOUBLESTAR)
-
-    def is_local(self):
-        return bool(self.__flags & DEF_BOUND)
-
-    def is_free(self):
-        if (self.__flags & (USE | DEF_FREE)) \
-            and (self.__flags & (DEF_LOCAL | DEF_PARAM | DEF_GLOBAL)):
-            return True
-        if self.__flags & DEF_FREE_CLASS:
-            return True
-        return False
-
-    def is_imported(self):
-        return bool(self.__flags & DEF_IMPORT)
-
-    def is_assigned(self):
-        return bool(self.__flags & DEF_LOCAL)
-
-    def is_in_tuple(self):
-        return bool(self.__flags & DEF_INTUPLE)
-
-    def is_namespace(self):
-        """Returns true if name binding introduces new namespace.
-
-        If the name is used as the target of a function or class
-        statement, this will be true.
-
-        Note that a single name can be bound to multiple objects.  If
-        is_namespace() is true, the name may also be bound to other
-        objects, like an int or list, that does not introduce a new
-        namespace.
-        """
-        return bool(self.__namespaces)
-
-    def get_namespaces(self):
-        """Return a list of namespaces bound to this name"""
-        return self.__namespaces
-
-    def get_namespace(self):
-        """Returns the single namespace bound to this name.
-
-        Raises ValueError if the name is bound to multiple namespaces.
-        """
-        if len(self.__namespaces) != 1:
-            raise ValueError, "name is bound to multiple namespaces"
-        return self.__namespaces[0]
-
-if __name__ == "__main__":
-    import os, sys
-    src = open(sys.argv[0]).read()
-    mod = symtable(src, os.path.split(sys.argv[0])[1], "exec")
-    for ident in mod.get_identifiers():
-        info = mod.lookup(ident)
-        print info, info.is_local(), info.is_namespace()