Module expr 

Expression-to-Rust translation helpers.

Converts Python AST expression nodes into Rust source strings. All functions are pure (no I/O, no state).

Functions

constant_to_rust

Convert a Python constant value to its Rust literal equivalent.

expr_to_rust

Translate a Python expression to a Rust expression string.

translate_for_iter

Translate a Python for-loop iterator expression to a Rust range string. Handles: range(n) → 0..n, range(a, b) → a..b, fallback to expr_to_rust.

translate_len_guard

Translate a Python if-test that guards a length check into a Rust guard string. Returns None if the test is not a simple equality/inequality comparison.

translate_while_test

Translate a Python while-loop test expression to Rust.