Extend the scope resolution mechanism to identify independent variables in any ancestor expression, not just the immediate parent. This change aims to accurately reflect lexical scoping within nested expressions, ensuring variables are correctly recognized as independent based on their usage throughout the entire expression tree.
Problem Description
Currently, the system only checks if a variable is independent with respect to its immediate parent expression. This approach is insufficient for deeply nested expressions, where a variable might be independent in a broader context. The existing mechanism can lead to incorrect resolution of variable references.
Proposed Solution
Replace the isIndependentVariableOfParentExpression flag with a new mechanism, isIndependentVariableOfAnyAscendentExpression. This new method will traverse all ancestor expressions up to the root to determine if the variable serves as an independent input at any level of the expression tree.
Benefits
Ensures accurate resolution of variable references in complex, nested expressions.
Aligns the variable scope resolution mechanism with natural lexical scoping principles.
Improves the system's reliability and correctness by accurately identifying independent variables.
Implementation Considerations
The traversal algorithm should efficiently navigate the expression tree, avoiding unnecessary computations.
Care should be taken to handle edge cases, such as circular dependencies or extremely deep nesting, to prevent performance degradation.
Comprehensive unit tests should be added to verify the correct identification of independent variables in a variety of nested expression scenarios.
crowlogic
commented
5 months ago
Summary
Extend the scope resolution mechanism to identify independent variables in any ancestor expression, not just the immediate parent. This change aims to accurately reflect lexical scoping within nested expressions, ensuring variables are correctly recognized as independent based on their usage throughout the entire expression tree.
Problem Description
Currently, the system only checks if a variable is independent with respect to its immediate parent expression. This approach is insufficient for deeply nested expressions, where a variable might be independent in a broader context. The existing mechanism can lead to incorrect resolution of variable references.
Proposed Solution
Replace the
isIndependentVariableOfParentExpressionflag with a new mechanism,isIndependentVariableOfAnyAscendentExpression. This new method will traverse all ancestor expressions up to the root to determine if the variable serves as an independent input at any level of the expression tree.Benefits
Implementation Considerations
Tasks
isIndependentVariableOfAnyAscendentExpressionmechanism.resolveReferencemethod to use the new scope resolution logic.