added table support and cleaned up a few other things

uml.py

@@ -1,6 +1,7 @@
 from fileinput import input as finput
+import re
 
-class UntitledError: pass
+class UntitledError(BaseException): pass
 class InternalError(UntitledError): pass
 class ParsingError(UntitledError): pass
 class MiscError(UntitledError): pass
@@ -11,8 +12,42 @@ class Element:
         else: self.data = data
         self.element = element
     def append(self, string, space=False):
+        if type(data) == str:
             if space: self.data += " "
             self.data += string
+        else: raise InternalError("Appending to object!")
+    def set(self, data):
+        self.data = data
+    def __str__(self):
+        return str((str(self.element), str(self.data)))
+    def __repl__(self): return self.__str__()
+class Table:
+    def __init__(self, data=None):
+        if data == None: self.data = []
+        else:
+            self.data = []
+            self.addrow(data)
+    def addrow(self, data):
+        if type(data) == str:
+            buf = [i.rstrip().lstrip() for i in data.split("|")]
+            if len(self.data) > 0:
+                if len(self.data[-1]) == len(buf):
+                    self.data.append(buf)
+                else:
+                    raise ParsingError("tables must have uniform dimensions throughout")
+            else:
+                self.data.append(buf)
+        elif type(data) == list:
+            if len(self.data) > 0:
+                if len(self.data[-1]) == len(data):
+                    self.data.append(data)
+                else:
+                    raise ParsingError("tables must have uniform dimensions throughout")
+            else:
+                self.data.append(data)
+    def __str__(self):
+        return str(self.data)
+    def __repl__(self): return self.__str__()
 
 def printchain(chain):
     for i in chain:
@@ -20,6 +55,10 @@ def printchain(chain):
         else: print(i.element)
 
 chain = []
+flags = {
+    "TABLE_PREV": False,
+}
+def main():
     for i in finput():
         i = i.rstrip()
 
@@ -51,4 +90,15 @@ for i in finput():
             elif command == "-": chain.append(Element("l", params))
             elif command == ">": chain.append(Element("q", params))
             elif command == "=": chain.append(Element("r", params))
+            elif command == "|":
+                if flags["TABLE_PREV"]:
+                    chain[-1].data.addrow(params)
+                    continue
+                else:
+                    chain.append(Element("t", Table(params)))
+                    flags["TABLE_PREV"] = True
+                    continue
+            flags["TABLE_PREV"] = False
     printchain(chain)
+
+if __name__ == "__main__": main()