diff --git a/.gitignore b/.gitignore
index 0020b40..9156963 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,8 @@
 src/__pycache__
 src/parser.out
 src/parsetab.py
+*/*.interp
+*/*.tokens
+src/arithLexer.py
+src/arithListener.py
+src/arithParser.py
diff --git a/src/ArithLexer.interp b/src/ArithLexer.interp
deleted file mode 100644
index 9f6a130..0000000
--- a/src/ArithLexer.interp
+++ /dev/null
@@ -1,38 +0,0 @@
-token literal names:
-null
-'+'
-'*'
-'**'
-'('
-')'
-null
-null
-
-token symbolic names:
-null
-null
-null
-null
-null
-null
-NUMBER
-WS
-
-rule names:
-T__0
-T__1
-T__2
-T__3
-T__4
-NUMBER
-WS
-
-channel names:
-DEFAULT_TOKEN_CHANNEL
-HIDDEN
-
-mode names:
-DEFAULT_MODE
-
-atn:
-[4, 0, 7, 40, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 5, 5, 30, 8, 5, 10, 5, 12, 5, 33, 9, 5, 3, 5, 35, 8, 5, 1, 6, 1, 6, 1, 6, 1, 6, 0, 0, 7, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 1, 0, 3, 1, 0, 49, 57, 1, 0, 48, 57, 3, 0, 9, 10, 13, 13, 32, 32, 41, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, 0, 0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 13, 1, 0, 0, 0, 1, 15, 1, 0, 0, 0, 3, 17, 1, 0, 0, 0, 5, 19, 1, 0, 0, 0, 7, 22, 1, 0, 0, 0, 9, 24, 1, 0, 0, 0, 11, 34, 1, 0, 0, 0, 13, 36, 1, 0, 0, 0, 15, 16, 5, 43, 0, 0, 16, 2, 1, 0, 0, 0, 17, 18, 5, 42, 0, 0, 18, 4, 1, 0, 0, 0, 19, 20, 5, 42, 0, 0, 20, 21, 5, 42, 0, 0, 21, 6, 1, 0, 0, 0, 22, 23, 5, 40, 0, 0, 23, 8, 1, 0, 0, 0, 24, 25, 5, 41, 0, 0, 25, 10, 1, 0, 0, 0, 26, 35, 5, 48, 0, 0, 27, 31, 7, 0, 0, 0, 28, 30, 7, 1, 0, 0, 29, 28, 1, 0, 0, 0, 30, 33, 1, 0, 0, 0, 31, 29, 1, 0, 0, 0, 31, 32, 1, 0, 0, 0, 32, 35, 1, 0, 0, 0, 33, 31, 1, 0, 0, 0, 34, 26, 1, 0, 0, 0, 34, 27, 1, 0, 0, 0, 35, 12, 1, 0, 0, 0, 36, 37, 7, 2, 0, 0, 37, 38, 1, 0, 0, 0, 38, 39, 6, 6, 0, 0, 39, 14, 1, 0, 0, 0, 3, 0, 31, 34, 1, 6, 0, 0]
\ No newline at end of file
diff --git a/src/ArithLexer.py b/src/ArithLexer.py
deleted file mode 100644
index 55e067a..0000000
--- a/src/ArithLexer.py
+++ /dev/null
@@ -1,64 +0,0 @@
-# Generated from arith.g4 by ANTLR 4.13.1
-from antlr4 import *
-from io import StringIO
-import sys
-if sys.version_info[1] > 5:
-    from typing import TextIO
-else:
-    from typing.io import TextIO
-
-
-def serializedATN():
-    return [
-        4,0,7,40,6,-1,2,0,7,0,2,1,7,1,2,2,7,2,2,3,7,3,2,4,7,4,2,5,7,5,2,
-        6,7,6,1,0,1,0,1,1,1,1,1,2,1,2,1,2,1,3,1,3,1,4,1,4,1,5,1,5,1,5,5,
-        5,30,8,5,10,5,12,5,33,9,5,3,5,35,8,5,1,6,1,6,1,6,1,6,0,0,7,1,1,3,
-        2,5,3,7,4,9,5,11,6,13,7,1,0,3,1,0,49,57,1,0,48,57,3,0,9,10,13,13,
-        32,32,41,0,1,1,0,0,0,0,3,1,0,0,0,0,5,1,0,0,0,0,7,1,0,0,0,0,9,1,0,
-        0,0,0,11,1,0,0,0,0,13,1,0,0,0,1,15,1,0,0,0,3,17,1,0,0,0,5,19,1,0,
-        0,0,7,22,1,0,0,0,9,24,1,0,0,0,11,34,1,0,0,0,13,36,1,0,0,0,15,16,
-        5,43,0,0,16,2,1,0,0,0,17,18,5,42,0,0,18,4,1,0,0,0,19,20,5,42,0,0,
-        20,21,5,42,0,0,21,6,1,0,0,0,22,23,5,40,0,0,23,8,1,0,0,0,24,25,5,
-        41,0,0,25,10,1,0,0,0,26,35,5,48,0,0,27,31,7,0,0,0,28,30,7,1,0,0,
-        29,28,1,0,0,0,30,33,1,0,0,0,31,29,1,0,0,0,31,32,1,0,0,0,32,35,1,
-        0,0,0,33,31,1,0,0,0,34,26,1,0,0,0,34,27,1,0,0,0,35,12,1,0,0,0,36,
-        37,7,2,0,0,37,38,1,0,0,0,38,39,6,6,0,0,39,14,1,0,0,0,3,0,31,34,1,
-        6,0,0
-    ]
-
-class ArithLexer(Lexer):
-
-    atn = ATNDeserializer().deserialize(serializedATN())
-
-    decisionsToDFA = [ DFA(ds, i) for i, ds in enumerate(atn.decisionToState) ]
-
-    T__0 = 1
-    T__1 = 2
-    T__2 = 3
-    T__3 = 4
-    T__4 = 5
-    NUMBER = 6
-    WS = 7
-
-    channelNames = [ u"DEFAULT_TOKEN_CHANNEL", u"HIDDEN" ]
-
-    modeNames = [ "DEFAULT_MODE" ]
-
-    literalNames = [ "<INVALID>",
-            "'+'", "'*'", "'**'", "'('", "')'" ]
-
-    symbolicNames = [ "<INVALID>",
-            "NUMBER", "WS" ]
-
-    ruleNames = [ "T__0", "T__1", "T__2", "T__3", "T__4", "NUMBER", "WS" ]
-
-    grammarFileName = "arith.g4"
-
-    def __init__(self, input=None, output:TextIO = sys.stdout):
-        super().__init__(input, output)
-        self.checkVersion("4.13.1")
-        self._interp = LexerATNSimulator(self, self.atn, self.decisionsToDFA, PredictionContextCache())
-        self._actions = None
-        self._predicates = None
-
-
diff --git a/src/ArithLexer.tokens b/src/ArithLexer.tokens
deleted file mode 100644
index d3047b4..0000000
--- a/src/ArithLexer.tokens
+++ /dev/null
@@ -1,12 +0,0 @@
-T__0=1
-T__1=2
-T__2=3
-T__3=4
-T__4=5
-NUMBER=6
-WS=7
-'+'=1
-'*'=2
-'**'=3
-'('=4
-')'=5
diff --git a/src/PowerLexer.interp b/src/PowerLexer.interp
deleted file mode 100644
index 9f6a130..0000000
--- a/src/PowerLexer.interp
+++ /dev/null
@@ -1,38 +0,0 @@
-token literal names:
-null
-'+'
-'*'
-'**'
-'('
-')'
-null
-null
-
-token symbolic names:
-null
-null
-null
-null
-null
-null
-NUMBER
-WS
-
-rule names:
-T__0
-T__1
-T__2
-T__3
-T__4
-NUMBER
-WS
-
-channel names:
-DEFAULT_TOKEN_CHANNEL
-HIDDEN
-
-mode names:
-DEFAULT_MODE
-
-atn:
-[4, 0, 7, 40, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 5, 5, 30, 8, 5, 10, 5, 12, 5, 33, 9, 5, 3, 5, 35, 8, 5, 1, 6, 1, 6, 1, 6, 1, 6, 0, 0, 7, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 1, 0, 3, 1, 0, 49, 57, 1, 0, 48, 57, 3, 0, 9, 10, 13, 13, 32, 32, 41, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, 0, 0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 13, 1, 0, 0, 0, 1, 15, 1, 0, 0, 0, 3, 17, 1, 0, 0, 0, 5, 19, 1, 0, 0, 0, 7, 22, 1, 0, 0, 0, 9, 24, 1, 0, 0, 0, 11, 34, 1, 0, 0, 0, 13, 36, 1, 0, 0, 0, 15, 16, 5, 43, 0, 0, 16, 2, 1, 0, 0, 0, 17, 18, 5, 42, 0, 0, 18, 4, 1, 0, 0, 0, 19, 20, 5, 42, 0, 0, 20, 21, 5, 42, 0, 0, 21, 6, 1, 0, 0, 0, 22, 23, 5, 40, 0, 0, 23, 8, 1, 0, 0, 0, 24, 25, 5, 41, 0, 0, 25, 10, 1, 0, 0, 0, 26, 35, 5, 48, 0, 0, 27, 31, 7, 0, 0, 0, 28, 30, 7, 1, 0, 0, 29, 28, 1, 0, 0, 0, 30, 33, 1, 0, 0, 0, 31, 29, 1, 0, 0, 0, 31, 32, 1, 0, 0, 0, 32, 35, 1, 0, 0, 0, 33, 31, 1, 0, 0, 0, 34, 26, 1, 0, 0, 0, 34, 27, 1, 0, 0, 0, 35, 12, 1, 0, 0, 0, 36, 37, 7, 2, 0, 0, 37, 38, 1, 0, 0, 0, 38, 39, 6, 6, 0, 0, 39, 14, 1, 0, 0, 0, 3, 0, 31, 34, 1, 6, 0, 0]
\ No newline at end of file
diff --git a/src/PowerLexer.py b/src/PowerLexer.py
deleted file mode 100644
index 400bfad..0000000
--- a/src/PowerLexer.py
+++ /dev/null
@@ -1,64 +0,0 @@
-# Generated from arith.g4 by ANTLR 4.13.1
-from antlr4 import *
-from io import StringIO
-import sys
-if sys.version_info[1] > 5:
-    from typing import TextIO
-else:
-    from typing.io import TextIO
-
-
-def serializedATN():
-    return [
-        4,0,7,40,6,-1,2,0,7,0,2,1,7,1,2,2,7,2,2,3,7,3,2,4,7,4,2,5,7,5,2,
-        6,7,6,1,0,1,0,1,1,1,1,1,2,1,2,1,2,1,3,1,3,1,4,1,4,1,5,1,5,1,5,5,
-        5,30,8,5,10,5,12,5,33,9,5,3,5,35,8,5,1,6,1,6,1,6,1,6,0,0,7,1,1,3,
-        2,5,3,7,4,9,5,11,6,13,7,1,0,3,1,0,49,57,1,0,48,57,3,0,9,10,13,13,
-        32,32,41,0,1,1,0,0,0,0,3,1,0,0,0,0,5,1,0,0,0,0,7,1,0,0,0,0,9,1,0,
-        0,0,0,11,1,0,0,0,0,13,1,0,0,0,1,15,1,0,0,0,3,17,1,0,0,0,5,19,1,0,
-        0,0,7,22,1,0,0,0,9,24,1,0,0,0,11,34,1,0,0,0,13,36,1,0,0,0,15,16,
-        5,43,0,0,16,2,1,0,0,0,17,18,5,42,0,0,18,4,1,0,0,0,19,20,5,42,0,0,
-        20,21,5,42,0,0,21,6,1,0,0,0,22,23,5,40,0,0,23,8,1,0,0,0,24,25,5,
-        41,0,0,25,10,1,0,0,0,26,35,5,48,0,0,27,31,7,0,0,0,28,30,7,1,0,0,
-        29,28,1,0,0,0,30,33,1,0,0,0,31,29,1,0,0,0,31,32,1,0,0,0,32,35,1,
-        0,0,0,33,31,1,0,0,0,34,26,1,0,0,0,34,27,1,0,0,0,35,12,1,0,0,0,36,
-        37,7,2,0,0,37,38,1,0,0,0,38,39,6,6,0,0,39,14,1,0,0,0,3,0,31,34,1,
-        6,0,0
-    ]
-
-class PowerLexer(Lexer):
-
-    atn = ATNDeserializer().deserialize(serializedATN())
-
-    decisionsToDFA = [ DFA(ds, i) for i, ds in enumerate(atn.decisionToState) ]
-
-    T__0 = 1
-    T__1 = 2
-    T__2 = 3
-    T__3 = 4
-    T__4 = 5
-    NUMBER = 6
-    WS = 7
-
-    channelNames = [ u"DEFAULT_TOKEN_CHANNEL", u"HIDDEN" ]
-
-    modeNames = [ "DEFAULT_MODE" ]
-
-    literalNames = [ "<INVALID>",
-            "'+'", "'*'", "'**'", "'('", "')'" ]
-
-    symbolicNames = [ "<INVALID>",
-            "NUMBER", "WS" ]
-
-    ruleNames = [ "T__0", "T__1", "T__2", "T__3", "T__4", "NUMBER", "WS" ]
-
-    grammarFileName = "arith.g4"
-
-    def __init__(self, input=None, output:TextIO = sys.stdout):
-        super().__init__(input, output)
-        self.checkVersion("4.13.1")
-        self._interp = LexerATNSimulator(self, self.atn, self.decisionsToDFA, PredictionContextCache())
-        self._actions = None
-        self._predicates = None
-
-
diff --git a/src/PowerLexer.tokens b/src/PowerLexer.tokens
deleted file mode 100644
index d3047b4..0000000
--- a/src/PowerLexer.tokens
+++ /dev/null
@@ -1,12 +0,0 @@
-T__0=1
-T__1=2
-T__2=3
-T__3=4
-T__4=5
-NUMBER=6
-WS=7
-'+'=1
-'*'=2
-'**'=3
-'('=4
-')'=5
diff --git a/src/arith.interp b/src/arith.interp
deleted file mode 100644
index e616ac4..0000000
--- a/src/arith.interp
+++ /dev/null
@@ -1,31 +0,0 @@
-token literal names:
-null
-'+'
-'*'
-'**'
-'('
-')'
-null
-null
-
-token symbolic names:
-null
-null
-null
-null
-null
-null
-NUMBER
-WS
-
-rule names:
-program
-start
-expr
-prod
-pow
-base
-
-
-atn:
-[4, 1, 7, 68, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 1, 0, 4, 0, 14, 8, 0, 11, 0, 12, 0, 15, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 5, 2, 30, 8, 2, 10, 2, 12, 2, 33, 9, 2, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 1, 3, 5, 3, 44, 8, 3, 10, 3, 12, 3, 47, 9, 3, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 1, 4, 3, 4, 57, 8, 4, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 3, 5, 66, 8, 5, 1, 5, 0, 2, 4, 6, 6, 0, 2, 4, 6, 8, 10, 0, 0, 66, 0, 13, 1, 0, 0, 0, 2, 17, 1, 0, 0, 0, 4, 20, 1, 0, 0, 0, 6, 34, 1, 0, 0, 0, 8, 56, 1, 0, 0, 0, 10, 65, 1, 0, 0, 0, 12, 14, 3, 2, 1, 0, 13, 12, 1, 0, 0, 0, 14, 15, 1, 0, 0, 0, 15, 13, 1, 0, 0, 0, 15, 16, 1, 0, 0, 0, 16, 1, 1, 0, 0, 0, 17, 18, 3, 4, 2, 0, 18, 19, 6, 1, -1, 0, 19, 3, 1, 0, 0, 0, 20, 21, 6, 2, -1, 0, 21, 22, 3, 6, 3, 0, 22, 23, 6, 2, -1, 0, 23, 31, 1, 0, 0, 0, 24, 25, 10, 2, 0, 0, 25, 26, 5, 1, 0, 0, 26, 27, 3, 6, 3, 0, 27, 28, 6, 2, -1, 0, 28, 30, 1, 0, 0, 0, 29, 24, 1, 0, 0, 0, 30, 33, 1, 0, 0, 0, 31, 29, 1, 0, 0, 0, 31, 32, 1, 0, 0, 0, 32, 5, 1, 0, 0, 0, 33, 31, 1, 0, 0, 0, 34, 35, 6, 3, -1, 0, 35, 36, 3, 8, 4, 0, 36, 37, 6, 3, -1, 0, 37, 45, 1, 0, 0, 0, 38, 39, 10, 2, 0, 0, 39, 40, 5, 2, 0, 0, 40, 41, 3, 8, 4, 0, 41, 42, 6, 3, -1, 0, 42, 44, 1, 0, 0, 0, 43, 38, 1, 0, 0, 0, 44, 47, 1, 0, 0, 0, 45, 43, 1, 0, 0, 0, 45, 46, 1, 0, 0, 0, 46, 7, 1, 0, 0, 0, 47, 45, 1, 0, 0, 0, 48, 49, 3, 10, 5, 0, 49, 50, 5, 3, 0, 0, 50, 51, 3, 8, 4, 0, 51, 52, 6, 4, -1, 0, 52, 57, 1, 0, 0, 0, 53, 54, 3, 10, 5, 0, 54, 55, 6, 4, -1, 0, 55, 57, 1, 0, 0, 0, 56, 48, 1, 0, 0, 0, 56, 53, 1, 0, 0, 0, 57, 9, 1, 0, 0, 0, 58, 59, 5, 4, 0, 0, 59, 60, 3, 4, 2, 0, 60, 61, 5, 5, 0, 0, 61, 62, 6, 5, -1, 0, 62, 66, 1, 0, 0, 0, 63, 64, 5, 6, 0, 0, 64, 66, 6, 5, -1, 0, 65, 58, 1, 0, 0, 0, 65, 63, 1, 0, 0, 0, 66, 11, 1, 0, 0, 0, 5, 15, 31, 45, 56, 65]
\ No newline at end of file
diff --git a/src/arith.tokens b/src/arith.tokens
deleted file mode 100644
index d3047b4..0000000
--- a/src/arith.tokens
+++ /dev/null
@@ -1,12 +0,0 @@
-T__0=1
-T__1=2
-T__2=3
-T__3=4
-T__4=5
-NUMBER=6
-WS=7
-'+'=1
-'*'=2
-'**'=3
-'('=4
-')'=5
diff --git a/src/arithLexer.interp b/src/arithLexer.interp
deleted file mode 100644
index 9f6a130..0000000
--- a/src/arithLexer.interp
+++ /dev/null
@@ -1,38 +0,0 @@
-token literal names:
-null
-'+'
-'*'
-'**'
-'('
-')'
-null
-null
-
-token symbolic names:
-null
-null
-null
-null
-null
-null
-NUMBER
-WS
-
-rule names:
-T__0
-T__1
-T__2
-T__3
-T__4
-NUMBER
-WS
-
-channel names:
-DEFAULT_TOKEN_CHANNEL
-HIDDEN
-
-mode names:
-DEFAULT_MODE
-
-atn:
-[4, 0, 7, 40, 6, -1, 2, 0, 7, 0, 2, 1, 7, 1, 2, 2, 7, 2, 2, 3, 7, 3, 2, 4, 7, 4, 2, 5, 7, 5, 2, 6, 7, 6, 1, 0, 1, 0, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 3, 1, 3, 1, 4, 1, 4, 1, 5, 1, 5, 1, 5, 5, 5, 30, 8, 5, 10, 5, 12, 5, 33, 9, 5, 3, 5, 35, 8, 5, 1, 6, 1, 6, 1, 6, 1, 6, 0, 0, 7, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 13, 7, 1, 0, 3, 1, 0, 49, 57, 1, 0, 48, 57, 3, 0, 9, 10, 13, 13, 32, 32, 41, 0, 1, 1, 0, 0, 0, 0, 3, 1, 0, 0, 0, 0, 5, 1, 0, 0, 0, 0, 7, 1, 0, 0, 0, 0, 9, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 13, 1, 0, 0, 0, 1, 15, 1, 0, 0, 0, 3, 17, 1, 0, 0, 0, 5, 19, 1, 0, 0, 0, 7, 22, 1, 0, 0, 0, 9, 24, 1, 0, 0, 0, 11, 34, 1, 0, 0, 0, 13, 36, 1, 0, 0, 0, 15, 16, 5, 43, 0, 0, 16, 2, 1, 0, 0, 0, 17, 18, 5, 42, 0, 0, 18, 4, 1, 0, 0, 0, 19, 20, 5, 42, 0, 0, 20, 21, 5, 42, 0, 0, 21, 6, 1, 0, 0, 0, 22, 23, 5, 40, 0, 0, 23, 8, 1, 0, 0, 0, 24, 25, 5, 41, 0, 0, 25, 10, 1, 0, 0, 0, 26, 35, 5, 48, 0, 0, 27, 31, 7, 0, 0, 0, 28, 30, 7, 1, 0, 0, 29, 28, 1, 0, 0, 0, 30, 33, 1, 0, 0, 0, 31, 29, 1, 0, 0, 0, 31, 32, 1, 0, 0, 0, 32, 35, 1, 0, 0, 0, 33, 31, 1, 0, 0, 0, 34, 26, 1, 0, 0, 0, 34, 27, 1, 0, 0, 0, 35, 12, 1, 0, 0, 0, 36, 37, 7, 2, 0, 0, 37, 38, 1, 0, 0, 0, 38, 39, 6, 6, 0, 0, 39, 14, 1, 0, 0, 0, 3, 0, 31, 34, 1, 6, 0, 0]
\ No newline at end of file
diff --git a/src/arithLexer.py b/src/arithLexer.py
deleted file mode 100644
index ecd5f9c..0000000
--- a/src/arithLexer.py
+++ /dev/null
@@ -1,64 +0,0 @@
-# Generated from arith.g4 by ANTLR 4.13.1
-from antlr4 import *
-from io import StringIO
-import sys
-if sys.version_info[1] > 5:
-    from typing import TextIO
-else:
-    from typing.io import TextIO
-
-
-def serializedATN():
-    return [
-        4,0,7,40,6,-1,2,0,7,0,2,1,7,1,2,2,7,2,2,3,7,3,2,4,7,4,2,5,7,5,2,
-        6,7,6,1,0,1,0,1,1,1,1,1,2,1,2,1,2,1,3,1,3,1,4,1,4,1,5,1,5,1,5,5,
-        5,30,8,5,10,5,12,5,33,9,5,3,5,35,8,5,1,6,1,6,1,6,1,6,0,0,7,1,1,3,
-        2,5,3,7,4,9,5,11,6,13,7,1,0,3,1,0,49,57,1,0,48,57,3,0,9,10,13,13,
-        32,32,41,0,1,1,0,0,0,0,3,1,0,0,0,0,5,1,0,0,0,0,7,1,0,0,0,0,9,1,0,
-        0,0,0,11,1,0,0,0,0,13,1,0,0,0,1,15,1,0,0,0,3,17,1,0,0,0,5,19,1,0,
-        0,0,7,22,1,0,0,0,9,24,1,0,0,0,11,34,1,0,0,0,13,36,1,0,0,0,15,16,
-        5,43,0,0,16,2,1,0,0,0,17,18,5,42,0,0,18,4,1,0,0,0,19,20,5,42,0,0,
-        20,21,5,42,0,0,21,6,1,0,0,0,22,23,5,40,0,0,23,8,1,0,0,0,24,25,5,
-        41,0,0,25,10,1,0,0,0,26,35,5,48,0,0,27,31,7,0,0,0,28,30,7,1,0,0,
-        29,28,1,0,0,0,30,33,1,0,0,0,31,29,1,0,0,0,31,32,1,0,0,0,32,35,1,
-        0,0,0,33,31,1,0,0,0,34,26,1,0,0,0,34,27,1,0,0,0,35,12,1,0,0,0,36,
-        37,7,2,0,0,37,38,1,0,0,0,38,39,6,6,0,0,39,14,1,0,0,0,3,0,31,34,1,
-        6,0,0
-    ]
-
-class arithLexer(Lexer):
-
-    atn = ATNDeserializer().deserialize(serializedATN())
-
-    decisionsToDFA = [ DFA(ds, i) for i, ds in enumerate(atn.decisionToState) ]
-
-    T__0 = 1
-    T__1 = 2
-    T__2 = 3
-    T__3 = 4
-    T__4 = 5
-    NUMBER = 6
-    WS = 7
-
-    channelNames = [ u"DEFAULT_TOKEN_CHANNEL", u"HIDDEN" ]
-
-    modeNames = [ "DEFAULT_MODE" ]
-
-    literalNames = [ "<INVALID>",
-            "'+'", "'*'", "'**'", "'('", "')'" ]
-
-    symbolicNames = [ "<INVALID>",
-            "NUMBER", "WS" ]
-
-    ruleNames = [ "T__0", "T__1", "T__2", "T__3", "T__4", "NUMBER", "WS" ]
-
-    grammarFileName = "arith.g4"
-
-    def __init__(self, input=None, output:TextIO = sys.stdout):
-        super().__init__(input, output)
-        self.checkVersion("4.13.1")
-        self._interp = LexerATNSimulator(self, self.atn, self.decisionsToDFA, PredictionContextCache())
-        self._actions = None
-        self._predicates = None
-
-
diff --git a/src/arithLexer.tokens b/src/arithLexer.tokens
deleted file mode 100644
index d3047b4..0000000
--- a/src/arithLexer.tokens
+++ /dev/null
@@ -1,12 +0,0 @@
-T__0=1
-T__1=2
-T__2=3
-T__3=4
-T__4=5
-NUMBER=6
-WS=7
-'+'=1
-'*'=2
-'**'=3
-'('=4
-')'=5
diff --git a/src/arithListener.py b/src/arithListener.py
deleted file mode 100644
index 3732ff1..0000000
--- a/src/arithListener.py
+++ /dev/null
@@ -1,66 +0,0 @@
-# Generated from arith.g4 by ANTLR 4.13.1
-from antlr4 import *
-if "." in __name__:
-    from .arithParser import arithParser
-else:
-    from arithParser import arithParser
-
-# This class defines a complete listener for a parse tree produced by arithParser.
-class arithListener(ParseTreeListener):
-
-    # Enter a parse tree produced by arithParser#program.
-    def enterProgram(self, ctx:arithParser.ProgramContext):
-        pass
-
-    # Exit a parse tree produced by arithParser#program.
-    def exitProgram(self, ctx:arithParser.ProgramContext):
-        pass
-
-
-    # Enter a parse tree produced by arithParser#start.
-    def enterStart(self, ctx:arithParser.StartContext):
-        pass
-
-    # Exit a parse tree produced by arithParser#start.
-    def exitStart(self, ctx:arithParser.StartContext):
-        pass
-
-
-    # Enter a parse tree produced by arithParser#expr.
-    def enterExpr(self, ctx:arithParser.ExprContext):
-        pass
-
-    # Exit a parse tree produced by arithParser#expr.
-    def exitExpr(self, ctx:arithParser.ExprContext):
-        pass
-
-
-    # Enter a parse tree produced by arithParser#prod.
-    def enterProd(self, ctx:arithParser.ProdContext):
-        pass
-
-    # Exit a parse tree produced by arithParser#prod.
-    def exitProd(self, ctx:arithParser.ProdContext):
-        pass
-
-
-    # Enter a parse tree produced by arithParser#pow.
-    def enterPow(self, ctx:arithParser.PowContext):
-        pass
-
-    # Exit a parse tree produced by arithParser#pow.
-    def exitPow(self, ctx:arithParser.PowContext):
-        pass
-
-
-    # Enter a parse tree produced by arithParser#base.
-    def enterBase(self, ctx:arithParser.BaseContext):
-        pass
-
-    # Exit a parse tree produced by arithParser#base.
-    def exitBase(self, ctx:arithParser.BaseContext):
-        pass
-
-
-
-del arithParser
\ No newline at end of file
diff --git a/src/arithParser.py b/src/arithParser.py
deleted file mode 100644
index 4a2816c..0000000
--- a/src/arithParser.py
+++ /dev/null
@@ -1,490 +0,0 @@
-# Generated from arith.g4 by ANTLR 4.13.1
-# encoding: utf-8
-from antlr4 import *
-from io import StringIO
-import sys
-if sys.version_info[1] > 5:
-	from typing import TextIO
-else:
-	from typing.io import TextIO
-
-def serializedATN():
-    return [
-        4,1,7,68,2,0,7,0,2,1,7,1,2,2,7,2,2,3,7,3,2,4,7,4,2,5,7,5,1,0,4,0,
-        14,8,0,11,0,12,0,15,1,1,1,1,1,1,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,
-        1,2,5,2,30,8,2,10,2,12,2,33,9,2,1,3,1,3,1,3,1,3,1,3,1,3,1,3,1,3,
-        1,3,5,3,44,8,3,10,3,12,3,47,9,3,1,4,1,4,1,4,1,4,1,4,1,4,1,4,1,4,
-        3,4,57,8,4,1,5,1,5,1,5,1,5,1,5,1,5,1,5,3,5,66,8,5,1,5,0,2,4,6,6,
-        0,2,4,6,8,10,0,0,66,0,13,1,0,0,0,2,17,1,0,0,0,4,20,1,0,0,0,6,34,
-        1,0,0,0,8,56,1,0,0,0,10,65,1,0,0,0,12,14,3,2,1,0,13,12,1,0,0,0,14,
-        15,1,0,0,0,15,13,1,0,0,0,15,16,1,0,0,0,16,1,1,0,0,0,17,18,3,4,2,
-        0,18,19,6,1,-1,0,19,3,1,0,0,0,20,21,6,2,-1,0,21,22,3,6,3,0,22,23,
-        6,2,-1,0,23,31,1,0,0,0,24,25,10,2,0,0,25,26,5,1,0,0,26,27,3,6,3,
-        0,27,28,6,2,-1,0,28,30,1,0,0,0,29,24,1,0,0,0,30,33,1,0,0,0,31,29,
-        1,0,0,0,31,32,1,0,0,0,32,5,1,0,0,0,33,31,1,0,0,0,34,35,6,3,-1,0,
-        35,36,3,8,4,0,36,37,6,3,-1,0,37,45,1,0,0,0,38,39,10,2,0,0,39,40,
-        5,2,0,0,40,41,3,8,4,0,41,42,6,3,-1,0,42,44,1,0,0,0,43,38,1,0,0,0,
-        44,47,1,0,0,0,45,43,1,0,0,0,45,46,1,0,0,0,46,7,1,0,0,0,47,45,1,0,
-        0,0,48,49,3,10,5,0,49,50,5,3,0,0,50,51,3,8,4,0,51,52,6,4,-1,0,52,
-        57,1,0,0,0,53,54,3,10,5,0,54,55,6,4,-1,0,55,57,1,0,0,0,56,48,1,0,
-        0,0,56,53,1,0,0,0,57,9,1,0,0,0,58,59,5,4,0,0,59,60,3,4,2,0,60,61,
-        5,5,0,0,61,62,6,5,-1,0,62,66,1,0,0,0,63,64,5,6,0,0,64,66,6,5,-1,
-        0,65,58,1,0,0,0,65,63,1,0,0,0,66,11,1,0,0,0,5,15,31,45,56,65
-    ]
-
-class arithParser ( Parser ):
-
-    grammarFileName = "arith.g4"
-
-    atn = ATNDeserializer().deserialize(serializedATN())
-
-    decisionsToDFA = [ DFA(ds, i) for i, ds in enumerate(atn.decisionToState) ]
-
-    sharedContextCache = PredictionContextCache()
-
-    literalNames = [ "<INVALID>", "'+'", "'*'", "'**'", "'('", "')'" ]
-
-    symbolicNames = [ "<INVALID>", "<INVALID>", "<INVALID>", "<INVALID>", 
-                      "<INVALID>", "<INVALID>", "NUMBER", "WS" ]
-
-    RULE_program = 0
-    RULE_start = 1
-    RULE_expr = 2
-    RULE_prod = 3
-    RULE_pow = 4
-    RULE_base = 5
-
-    ruleNames =  [ "program", "start", "expr", "prod", "pow", "base" ]
-
-    EOF = Token.EOF
-    T__0=1
-    T__1=2
-    T__2=3
-    T__3=4
-    T__4=5
-    NUMBER=6
-    WS=7
-
-    def __init__(self, input:TokenStream, output:TextIO = sys.stdout):
-        super().__init__(input, output)
-        self.checkVersion("4.13.1")
-        self._interp = ParserATNSimulator(self, self.atn, self.decisionsToDFA, self.sharedContextCache)
-        self._predicates = None
-
-
-
-
-    class ProgramContext(ParserRuleContext):
-        __slots__ = 'parser'
-
-        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
-            super().__init__(parent, invokingState)
-            self.parser = parser
-
-        def start(self, i:int=None):
-            if i is None:
-                return self.getTypedRuleContexts(arithParser.StartContext)
-            else:
-                return self.getTypedRuleContext(arithParser.StartContext,i)
-
-
-        def getRuleIndex(self):
-            return arithParser.RULE_program
-
-        def enterRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "enterProgram" ):
-                listener.enterProgram(self)
-
-        def exitRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "exitProgram" ):
-                listener.exitProgram(self)
-
-
-
-
-    def program(self):
-
-        localctx = arithParser.ProgramContext(self, self._ctx, self.state)
-        self.enterRule(localctx, 0, self.RULE_program)
-        self._la = 0 # Token type
-        try:
-            self.enterOuterAlt(localctx, 1)
-            self.state = 13 
-            self._errHandler.sync(self)
-            _la = self._input.LA(1)
-            while True:
-                self.state = 12
-                self.start()
-                self.state = 15 
-                self._errHandler.sync(self)
-                _la = self._input.LA(1)
-                if not (_la==4 or _la==6):
-                    break
-
-        except RecognitionException as re:
-            localctx.exception = re
-            self._errHandler.reportError(self, re)
-            self._errHandler.recover(self, re)
-        finally:
-            self.exitRule()
-        return localctx
-
-
-    class StartContext(ParserRuleContext):
-        __slots__ = 'parser'
-
-        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
-            super().__init__(parent, invokingState)
-            self.parser = parser
-            self.e = None # ExprContext
-
-        def expr(self):
-            return self.getTypedRuleContext(arithParser.ExprContext,0)
-
-
-        def getRuleIndex(self):
-            return arithParser.RULE_start
-
-        def enterRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "enterStart" ):
-                listener.enterStart(self)
-
-        def exitRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "exitStart" ):
-                listener.exitStart(self)
-
-
-
-
-    def start(self):
-
-        localctx = arithParser.StartContext(self, self._ctx, self.state)
-        self.enterRule(localctx, 2, self.RULE_start)
-        try:
-            self.enterOuterAlt(localctx, 1)
-            self.state = 17
-            localctx.e = self.expr(0)
-            print(localctx.e.r)
-        except RecognitionException as re:
-            localctx.exception = re
-            self._errHandler.reportError(self, re)
-            self._errHandler.recover(self, re)
-        finally:
-            self.exitRule()
-        return localctx
-
-
-    class ExprContext(ParserRuleContext):
-        __slots__ = 'parser'
-
-        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
-            super().__init__(parent, invokingState)
-            self.parser = parser
-            self.r = None
-            self.e = None # ExprContext
-            self.p = None # ProdContext
-
-        def prod(self):
-            return self.getTypedRuleContext(arithParser.ProdContext,0)
-
-
-        def expr(self):
-            return self.getTypedRuleContext(arithParser.ExprContext,0)
-
-
-        def getRuleIndex(self):
-            return arithParser.RULE_expr
-
-        def enterRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "enterExpr" ):
-                listener.enterExpr(self)
-
-        def exitRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "exitExpr" ):
-                listener.exitExpr(self)
-
-
-
-    def expr(self, _p:int=0):
-        _parentctx = self._ctx
-        _parentState = self.state
-        localctx = arithParser.ExprContext(self, self._ctx, _parentState)
-        _prevctx = localctx
-        _startState = 4
-        self.enterRecursionRule(localctx, 4, self.RULE_expr, _p)
-        try:
-            self.enterOuterAlt(localctx, 1)
-            self.state = 21
-            localctx.p = self.prod(0)
-            localctx.r = localctx.p.r
-            self._ctx.stop = self._input.LT(-1)
-            self.state = 31
-            self._errHandler.sync(self)
-            _alt = self._interp.adaptivePredict(self._input,1,self._ctx)
-            while _alt!=2 and _alt!=ATN.INVALID_ALT_NUMBER:
-                if _alt==1:
-                    if self._parseListeners is not None:
-                        self.triggerExitRuleEvent()
-                    _prevctx = localctx
-                    localctx = arithParser.ExprContext(self, _parentctx, _parentState)
-                    localctx.e = _prevctx
-                    self.pushNewRecursionContext(localctx, _startState, self.RULE_expr)
-                    self.state = 24
-                    if not self.precpred(self._ctx, 2):
-                        from antlr4.error.Errors import FailedPredicateException
-                        raise FailedPredicateException(self, "self.precpred(self._ctx, 2)")
-                    self.state = 25
-                    self.match(arithParser.T__0)
-                    self.state = 26
-                    localctx.p = self.prod(0)
-                    localctx.r = localctx.e.r + localctx.p.r 
-                self.state = 33
-                self._errHandler.sync(self)
-                _alt = self._interp.adaptivePredict(self._input,1,self._ctx)
-
-        except RecognitionException as re:
-            localctx.exception = re
-            self._errHandler.reportError(self, re)
-            self._errHandler.recover(self, re)
-        finally:
-            self.unrollRecursionContexts(_parentctx)
-        return localctx
-
-
-    class ProdContext(ParserRuleContext):
-        __slots__ = 'parser'
-
-        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
-            super().__init__(parent, invokingState)
-            self.parser = parser
-            self.r = None
-            self.p = None # ProdContext
-            self.pw = None # PowContext
-
-        def pow_(self):
-            return self.getTypedRuleContext(arithParser.PowContext,0)
-
-
-        def prod(self):
-            return self.getTypedRuleContext(arithParser.ProdContext,0)
-
-
-        def getRuleIndex(self):
-            return arithParser.RULE_prod
-
-        def enterRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "enterProd" ):
-                listener.enterProd(self)
-
-        def exitRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "exitProd" ):
-                listener.exitProd(self)
-
-
-
-    def prod(self, _p:int=0):
-        _parentctx = self._ctx
-        _parentState = self.state
-        localctx = arithParser.ProdContext(self, self._ctx, _parentState)
-        _prevctx = localctx
-        _startState = 6
-        self.enterRecursionRule(localctx, 6, self.RULE_prod, _p)
-        try:
-            self.enterOuterAlt(localctx, 1)
-            self.state = 35
-            localctx.pw = self.pow_()
-            localctx.r = localctx.pw.r
-            self._ctx.stop = self._input.LT(-1)
-            self.state = 45
-            self._errHandler.sync(self)
-            _alt = self._interp.adaptivePredict(self._input,2,self._ctx)
-            while _alt!=2 and _alt!=ATN.INVALID_ALT_NUMBER:
-                if _alt==1:
-                    if self._parseListeners is not None:
-                        self.triggerExitRuleEvent()
-                    _prevctx = localctx
-                    localctx = arithParser.ProdContext(self, _parentctx, _parentState)
-                    localctx.p = _prevctx
-                    self.pushNewRecursionContext(localctx, _startState, self.RULE_prod)
-                    self.state = 38
-                    if not self.precpred(self._ctx, 2):
-                        from antlr4.error.Errors import FailedPredicateException
-                        raise FailedPredicateException(self, "self.precpred(self._ctx, 2)")
-                    self.state = 39
-                    self.match(arithParser.T__1)
-                    self.state = 40
-                    localctx.pw = self.pow_()
-                    localctx.r = localctx.p.r * localctx.pw.r 
-                self.state = 47
-                self._errHandler.sync(self)
-                _alt = self._interp.adaptivePredict(self._input,2,self._ctx)
-
-        except RecognitionException as re:
-            localctx.exception = re
-            self._errHandler.reportError(self, re)
-            self._errHandler.recover(self, re)
-        finally:
-            self.unrollRecursionContexts(_parentctx)
-        return localctx
-
-
-    class PowContext(ParserRuleContext):
-        __slots__ = 'parser'
-
-        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
-            super().__init__(parent, invokingState)
-            self.parser = parser
-            self.r = None
-            self.b = None # BaseContext
-            self.pw = None # PowContext
-
-        def base(self):
-            return self.getTypedRuleContext(arithParser.BaseContext,0)
-
-
-        def pow_(self):
-            return self.getTypedRuleContext(arithParser.PowContext,0)
-
-
-        def getRuleIndex(self):
-            return arithParser.RULE_pow
-
-        def enterRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "enterPow" ):
-                listener.enterPow(self)
-
-        def exitRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "exitPow" ):
-                listener.exitPow(self)
-
-
-
-
-    def pow_(self):
-
-        localctx = arithParser.PowContext(self, self._ctx, self.state)
-        self.enterRule(localctx, 8, self.RULE_pow)
-        try:
-            self.state = 56
-            self._errHandler.sync(self)
-            la_ = self._interp.adaptivePredict(self._input,3,self._ctx)
-            if la_ == 1:
-                self.enterOuterAlt(localctx, 1)
-                self.state = 48
-                localctx.b = self.base()
-                self.state = 49
-                self.match(arithParser.T__2)
-                self.state = 50
-                localctx.pw = self.pow_()
-                localctx.r = localctx.b.r ** localctx.pw.r
-                pass
-
-            elif la_ == 2:
-                self.enterOuterAlt(localctx, 2)
-                self.state = 53
-                localctx.b = self.base()
-                localctx.r = localctx.b.r
-                pass
-
-
-        except RecognitionException as re:
-            localctx.exception = re
-            self._errHandler.reportError(self, re)
-            self._errHandler.recover(self, re)
-        finally:
-            self.exitRule()
-        return localctx
-
-
-    class BaseContext(ParserRuleContext):
-        __slots__ = 'parser'
-
-        def __init__(self, parser, parent:ParserRuleContext=None, invokingState:int=-1):
-            super().__init__(parent, invokingState)
-            self.parser = parser
-            self.r = None
-            self.e = None # ExprContext
-            self.n = None # Token
-
-        def expr(self):
-            return self.getTypedRuleContext(arithParser.ExprContext,0)
-
-
-        def NUMBER(self):
-            return self.getToken(arithParser.NUMBER, 0)
-
-        def getRuleIndex(self):
-            return arithParser.RULE_base
-
-        def enterRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "enterBase" ):
-                listener.enterBase(self)
-
-        def exitRule(self, listener:ParseTreeListener):
-            if hasattr( listener, "exitBase" ):
-                listener.exitBase(self)
-
-
-
-
-    def base(self):
-
-        localctx = arithParser.BaseContext(self, self._ctx, self.state)
-        self.enterRule(localctx, 10, self.RULE_base)
-        try:
-            self.state = 65
-            self._errHandler.sync(self)
-            token = self._input.LA(1)
-            if token in [4]:
-                self.enterOuterAlt(localctx, 1)
-                self.state = 58
-                self.match(arithParser.T__3)
-                self.state = 59
-                localctx.e = self.expr(0)
-                self.state = 60
-                self.match(arithParser.T__4)
-                localctx.r = localctx.e.r
-                pass
-            elif token in [6]:
-                self.enterOuterAlt(localctx, 2)
-                self.state = 63
-                localctx.n = self.match(arithParser.NUMBER)
-                localctx.r = int((None if localctx.n is None else localctx.n.text))
-                pass
-            else:
-                raise NoViableAltException(self)
-
-        except RecognitionException as re:
-            localctx.exception = re
-            self._errHandler.reportError(self, re)
-            self._errHandler.recover(self, re)
-        finally:
-            self.exitRule()
-        return localctx
-
-
-
-    def sempred(self, localctx:RuleContext, ruleIndex:int, predIndex:int):
-        if self._predicates == None:
-            self._predicates = dict()
-        self._predicates[2] = self.expr_sempred
-        self._predicates[3] = self.prod_sempred
-        pred = self._predicates.get(ruleIndex, None)
-        if pred is None:
-            raise Exception("No predicate with index:" + str(ruleIndex))
-        else:
-            return pred(localctx, predIndex)
-
-    def expr_sempred(self, localctx:ExprContext, predIndex:int):
-            if predIndex == 0:
-                return self.precpred(self._ctx, 2)
-         
-
-    def prod_sempred(self, localctx:ProdContext, predIndex:int):
-            if predIndex == 1:
-                return self.precpred(self._ctx, 2)
-         
-
-
-
-