Use the minimum tape size when generating the machine.

ealter · Aug 3, 2017 · abd0ecf · abd0ecf
1 parent 344478f
commit abd0ecf
Show file tree

Hide file tree

Showing 2 changed files with 2 additions and 8 deletions.
diff --git a/vim_turing_machine/vim_constants.py b/vim_turing_machine/vim_constants.py
@@ -10,10 +10,6 @@
 
 VIM_TAPE_WRAP_POSITION = 40
 
-VIM_TAPE_NUM_ROWS = 4
-
-VIM_TAPE_MAX_LENGTH = VIM_TAPE_WRAP_POSITION * VIM_TAPE_NUM_ROWS
-
 VIM_LOG_TAPE_AND_STATE = '`ly$@"'
 
 VIM_TEMPLATE = """0/_v1\rnf-ly$@"

diff --git a/vim_turing_machine/vim_machine.py b/vim_turing_machine/vim_machine.py
@@ -8,16 +8,14 @@
 from vim_turing_machine.vim_constants import VIM_MOVE_TAPE_FORWARDS
 from vim_turing_machine.vim_constants import VIM_NEXT_STATE
 from vim_turing_machine.vim_constants import VIM_RUN_REGISTER
-from vim_turing_machine.vim_constants import VIM_TAPE_MAX_LENGTH
 from vim_turing_machine.vim_constants import VIM_TAPE_WRAP_POSITION
 from vim_turing_machine.vim_constants import VIM_TEMPLATE
 
 
 def create_initial_tape(input_tape):
     """Generates the initial tape by padding the input and wrapping"""
-    padding_length = VIM_TAPE_MAX_LENGTH - len(input_tape)
-    if padding_length > 0:
-        input_tape += padding_length * [BLANK_CHARACTER]
+    padding_length = VIM_TAPE_WRAP_POSITION - len(input_tape) % VIM_TAPE_WRAP_POSITION
+    input_tape += padding_length * [BLANK_CHARACTER]
 
     initial_tape = []
     for index, value in enumerate(input_tape):