removed dependency to six in generated code

fastidious/__main__.py

@@ -45,10 +45,11 @@ def generate(klass, executable):
 
     if executable:
         sys.stdout.write("""
-import sys
-res = Calculator.p_parse(" ".join(sys.argv[1:]))
-print(res)
-""")
+if __name__ == '__main__':
+    import sys
+    res = %s.p_parse(" ".join(sys.argv[1:]))
+    print(res)
+""" % klass.rsplit(".", 1)[-1])
 
 
 def graph(klass):

fastidious/fastidious_compiler.py

@@ -466,6 +466,21 @@ def visit_rule(self, node):
         self.output.write("\n\n")
 
 
+_SRE_Pattern = type(re.compile("."))
+
+
+def _repr(obj):
+    # actually only needed for Py2 that does not produce
+    # evaluable repr from regexps
+    if isinstance(obj, dict):
+        return "{%s}" % (", ".join("%s: %s" % (_repr(k), _repr(v))
+                                   for k, v in obj.items()))
+    elif isinstance(obj, _SRE_Pattern):
+        return "re.compile(%r, %s)" % (obj.pattern, obj.flags)
+    else:
+        return repr(obj)
+
+
 class FastidiousCompiler(object):
     def __init__(self, gen_code=True, memoize=True, debug=False):
         self.gen_code = gen_code
@@ -530,7 +545,9 @@ def gen_py_code(self, parser, out):
 '''.format(cmd))
         out.write("""
 import re
-import six
+
+if not hasattr(__builtins__, 'basestring'):
+    basestring = str
 
 """)
 
@@ -549,6 +566,9 @@ def __init__(self, **kwargs):
         out.write("    class ParserError(Exception):\n        pass\n\n")
         out.write(body)
 
+        # print _p_py_constants
+        out.write("    _p_py_constants = %s\n" % _repr(parser._p_py_constants))
+
         # print parsr methods and attributes
         from fastidious.parser_base import ParserMixin
         _, mixin_body = inspect.getsource(ParserMixin).split("\n", 1)

fastidious/parser_base.py

@@ -29,6 +29,9 @@
     UPPERCASE = string.uppercase
     LOWERCASE = string.lowercase
 
+if not hasattr(__builtins__, "basestring"):
+    basestring = str
+
 
 class ParserError(Exception):
     pass
@@ -188,7 +191,7 @@ def p_flatten(self, obj, **kwargs):
         'abc'
 
         """
-        if isinstance(obj, six.string_types):
+        if isinstance(obj, basestring):
             return obj
         result = ""
         for i in obj: