refactor: Streamline condition handling in CodeReader

This commit simplifies the condition handling in the CodeReader class by removing the compatibility check for custom conditions. The class now directly builds the combined conditions set from separated categories, enhancing clarity and maintainability. Additionally, the documentation has been updated to reflect the new language reader pattern, emphasizing the automatic combination of condition categories for improved usability.

Author: terryyin

lizard_languages/code_reader.py

@@ -100,9 +100,6 @@ class CodeReader:
     _logical_operators = {'&&', '||'}
     _case_keywords = {'case'}
     _ternary_operators = {'?'}
-    
-    # For compatibility with custom readers that may define _conditions directly
-    _conditions = None
 
     @classmethod
     def _build_conditions(cls):
@@ -119,13 +116,8 @@ def __init__(self, context):
         self.parallel_states = []
         self.context = context
 
-        # Build combined conditions set
-        if self.__class__._conditions is not None:
-            # Subclass defines _conditions directly
-            self.conditions = copy(self.__class__._conditions)
-        else:
-            # Build from separated categories
-            self.conditions = copy(self.__class__._build_conditions())
+        # Build combined conditions set from separated categories
+        self.conditions = copy(self.__class__._build_conditions())
 
         # Expose individual categories for extensions
         self.control_flow_keywords = copy(self.__class__._control_flow_keywords)

ongoing/code-structure-reference.md

@@ -202,24 +202,20 @@ reader.ternary_operators       # Set: Ternary operators only
 
 All are mutable sets that extensions can modify.
 
-## Backward Compatibility
+## Language Reader Pattern
 
-The base class supports two approaches for defining conditions:
+All language readers define separated condition categories:
 
 ```python
-# Approach 1: Define _conditions directly (for compatibility)
-class CustomReader(CodeReader):
-    _conditions = {'if', 'for', '&&', '||', 'case', '?'}  # Combined set
-
-# Approach 2: Use separated categories (recommended)
-class ModernReader(CodeReader):
+class LanguageReader(CodeReader):
+    # Define each category based on language syntax
     _control_flow_keywords = {'if', 'for'}
     _logical_operators = {'&&', '||'}
     _case_keywords = {'case'}
     _ternary_operators = {'?'}
 ```
 
-Both approaches work identically. Separated categories provide better semantics and enable extensions to target specific types.
+The base class automatically combines these into `self.conditions` for CCN calculation, while also exposing individual categories for extensions to use.
 
 ## Quick Reference Table
 

ongoing/todo_list.md

@@ -2,13 +2,8 @@
 
 ## Completed
 
-### Separate Conditions Refactoring ✅
-- [x] Separated condition concepts into 4 distinct categories
-- [x] Updated all 21+ language readers
-- [x] Updated all 4 extensions
-- [x] Comprehensive test coverage (1021 tests passing)
-- [x] Documentation created
-- [x] Fully backward compatible
+### Condition Categories Refactoring ✅
+All phases complete. See `CONDITIONS_REFACTORING.md` for details.
 
 ## Active