got distracted and made a repl framework.......

bcrypter/cli/cmd.py

@@ -1,7 +1,10 @@
+from itertools import chain, tee
+
 from bcrypter.lib.result import Result
+from bcrypter.cli.opt import Overlap
 
 class Command:
-    NAME = '[Abstract]Command'
+    NAME = '' # intentionally left empty (invalid name)
     ARGS = []
     FLAGS = []
     OPTIONS = []
@@ -21,9 +24,22 @@ class Command:
     (ie no duplicate names or parsing ambiguity)  
     '''
     @classmethod
-    def _is_well_defined(cls: Command) -> Result[None]:
-        raise NotImplementedException('Command.is_consistent()')
-    
+    def _is_well_defined(cls: Command) -> Result[list[Overlap]]:
+        overlaps: list[Overlap] = []
+        opts = chain(cls.FLAGS, cls.OPTIONS)
+        # Detect duplicate names and duplicate short/longforms
+        for optX in opts:
+            overlap = Overlap.empty(optX)
+            other_opts = tee(opts) # duplicate the opts iterator
+            for optY in other_opts:
+                overlap += Overlap.of(optX, optY)
+            # check if overlap occurred, add to list of all overlaps
+            if not overlap.is_empty():
+                overlaps.append(overlap)
+        if overlaps:
+            return Result.fail(overlaps)
+        return Result.succeed([])
+                
     '''
     Attempt to match an arg to its flag or option
     NOTE: _match_arg() assumes _is_well_defined() == True 
@@ -37,7 +53,10 @@ class Command:
 
 
 class Builtin(Command):
-    self.NAME = '[Abstract]Builtin'
+    NAME = '' # intentionally left empty (invalid name)
+    ARGS = []
+    FLAGS = []
+    OPTIONS = []
     def __init__(self, 
                  repl_builtins: list[Builtin], 
                  repl_cmds: list[Command]) -> None: