Missing list operations support (insert, remove, search, count, slice)

[yogendra-17]

Summary

Currently, LiteralList is lowered only as a constant array representation, but there is no operational support for list manipulation.
While list literals can be created, there are no corresponding AST nodes or lowering implementations for common list operations. This makes lists effectively immutable containers with no usable runtime behavior.

Missing Functionality

The following core list operations are currently unsupported:

• list.append(value)
• list.insert(index, value)
• list.remove(value)
• list.get(index)
• list.len()
• list.contains(value)
• list.count(value)
• list.slice(start, end)

Additional Information

Code of Conduct

• I agree to follow the Code of Conduct

[hemannt003]

Hi, I’d like to work on this issue.

My plan is to add support for common list operations (insert, remove, search, count, and slice) in the AST and LLVM IR generation pipeline.

Implementation approach:

• AST layer: Introduce dedicated AST nodes such as ListInsertExpr, ListRemoveExpr, ListSearchExpr, ListCountExpr, and ListSliceExpr to represent list operations explicitly.

• Visitor / Codegen: Extend LLVMLiteIRVisitor to handle these nodes and generate the appropriate LLVM IR.

• Runtime helpers: Implement helper routines (or inline loops in IR) for operations like search and count, which will iterate over list elements and perform comparisons.

• Slice support: Implement slicing by allocating a new list and copying the requested range of elements. I will also ensure open-ended slices and optional step handling if supported by the grammar.

• Type safety: Ensure operations only work on valid list element types and integrate with existing type promotion logic.

• Tests: Add examples/tests covering all operations (insert, remove, search, count, and slice) to ensure correctness.

If this approach aligns with the project design, I’d be happy to implement it.

[yogendra-17]

@hemannt003 , i am already working on this, hope you find another issue