restructing to move repo

ast.py

@@ -1,86 +0,0 @@
-# -*- coding: utf-8 -*-
-# TODO: create iso lens between sugar and non-sugar
-# TODO: supress + given a + (-b). i.e. want a - b
-
-from collections import namedtuple, deque
-from itertools import repeat
-from typing import Union
-from enum import Enum
-from sympy import Symbol
-
-VarKind = Enum("VarKind", ["x", "u", "w"])
-str_to_varkind = {"x": VarKind.x, "u": VarKind.u, "w": VarKind.w}
-dt_sym = Symbol('dt', positive=True)
-t_sym = Symbol('t', positive=True)
-
-class LinEq(namedtuple("LinEquality", ["terms", "op", "const"])):
-    def __repr__(self):
-        n = len(self.terms)
-        rep = "{}"
-        if n > 1:
-            rep += " + {}"*(n - 1)
-        rep += " {op} {c}"
-        return rep.format(*self.terms, op=self.op, c=self.const)
-
-    def children(self):
-        return []
-
-
-class Var(namedtuple("Var", ["coeff", "id", "time"])):
-    def __repr__(self):
-        time_str = "[{}]".format(self.time)
-        return "{c}*{i}{t}".format(c=self.coeff, i=self.id, t=time_str)
-
-
-class Interval(namedtuple('I', ['lower', 'upper'])):
-    def __repr__(self):
-        return "[{},{}]".format(self.lower, self.upper)
-
-    def children(self):
-        return [self.lower, self.upper]
-
-
-class NaryOpSTL(namedtuple('NaryOp', ['args'])):
-    OP = "?"
-    def __repr__(self):
-        n = len(self.args)
-        if n == 1:
-            return "{}".format(self.args[0])
-        elif self.args:
-            rep = " {op} ".join(["({})"]*(len(self.args)))
-            return rep.format(*self.args, op=self.OP)
-        else:
-            return ""
-
-    def children(self):
-        return self.args
-
-
-class Or(NaryOpSTL):
-    OP = "∨"
-
-class And(NaryOpSTL):
-    OP = "∧"
-
-
-class ModalOp(namedtuple('ModalOp', ['interval', 'arg'])):
-    def children(self):
-        return [self.arg]
-
-
-class F(ModalOp):
-    def __repr__(self):
-        return "◇{}({})".format(self.interval, self.arg)
-
-
-class G(ModalOp):
-    def __repr__(self):
-        return "□{}({})".format(self.interval, self.arg)
-
-
-class Neg(namedtuple('Neg', ['arg'])):
-    def __repr__(self):
-        return "¬({})".format(self.arg)
-
-    def children(self):
-        return [self.arg]