From f331885e36c9a1ba448a798fb103fd2c48b2ce44 Mon Sep 17 00:00:00 2001
From: Eevee <ferrox@veekun.com>
Date: Thu, 18 Dec 2008 00:57:11 -0800
Subject: [PATCH] Started merging cols/rows/boxes into "constraints".

So far, this is mostly just renaming some things and inching the code in that
direction.
---
 pseudoku/grid/__init__.py  | 16 +++++++++++-----
 pseudoku/grid/cellgroup.py | 10 +++++-----
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/pseudoku/grid/__init__.py b/pseudoku/grid/__init__.py
index 94d0833..ce7a701 100644
--- a/pseudoku/grid/__init__.py
+++ b/pseudoku/grid/__init__.py
@@ -56,6 +56,13 @@ class Cell(object):
         return self._grid._boxes[box_idx]
     box = property(_get_box)
 
+    def _get_constraints(self):
+        return [ self.row, self.column, self.box ]
+    constraints = property(_get_constraints)
+
+    def _get_groups(self):
+        return self._groups
+
     def __init__(self, grid, row, column):
         self._grid = proxy(grid)
         self._row = row
@@ -92,8 +99,7 @@ class Cell(object):
             return
 
         # Elimination time
-        for group_type in 'row', 'column', 'box':
-            group = getattr(self, group_type)
+        for group in self.constraints:
             for cell in group.cells:
                 if cell == self:
                     continue
@@ -170,9 +176,9 @@ class Grid(object):
         return self._size
     size = property(_get_size)
 
-    def _get_cell_groups(self):
+    def _get_constraints(self):
         return self._rows + self._columns + self._boxes
-    cell_groups = property(_get_cell_groups)
+    constraints = property(_get_constraints)
 
     ### Constructors
 
@@ -282,7 +288,7 @@ class Grid(object):
         self.normalize_cells()
 
         # Step 1: Find values that can only go in one cell in a group
-        for group in self.cell_groups:
+        for group in self.constraints:
             group.resolve_uniques()
 
 
diff --git a/pseudoku/grid/cellgroup.py b/pseudoku/grid/cellgroup.py
index 863ca4e..8ff948e 100644
--- a/pseudoku/grid/cellgroup.py
+++ b/pseudoku/grid/cellgroup.py
@@ -2,8 +2,8 @@ from __future__ import division
 
 from weakref import proxy
 
-class CellGroup(object):
-    """Represents any group of cells in a grid."""
+class CellConstraint(object):
+    """Represents any group of cells in a grid that cannot repeat a digit."""
 
     ### Accessors
 
@@ -43,7 +43,7 @@ class CellGroup(object):
             target_cell.set(value)
 
 
-class Box(CellGroup):
+class Box(CellConstraint):
     def _get_box_row(self):
         return self._pos // self._grid._box_width
     box_row = property(_get_box_row)
@@ -68,7 +68,7 @@ class Box(CellGroup):
         self._pos = position
 
 
-class Row(CellGroup):
+class Row(CellConstraint):
     def _get_cells(self):
         # XXX generator + docstring
         cells = []
@@ -82,7 +82,7 @@ class Row(CellGroup):
         self._pos = position
 
 
-class Column(CellGroup):
+class Column(CellConstraint):
     def _get_cells(self):
         # XXX generator + docstring
         cells = []
-- 
2.7.4