Cx Dev Log — 2026-03-14

Title: Cx Compiler Breakthrough: Arrays with Index Assignment and Control Flow Overhaul Big day for the Cx compiler as two full phases hit the main branch. The latest updates bring arrays, index assignment, while-in loops, then-chaining, and if/else statements into the fold. Both phases—7a+7b and 7c—are implemented across the entire compilation pipeline. Let's dive into the details and explore what this means for Cx developers. Arrays and Index Assignment Meet While-in Loops Bringing arrays and index assignments into Cx wasn't as simple as it might seem. These features are tightly knit with while-in loops and then-chaining, making their simultaneous release a necessity. You can't effectively test array indexing without loops and chaining mechanisms for iterating over each element. This update touched nearly every critical file in the compiler: ast.rs , parser.rs , semantic.rs , semantic_types.rs , lower.rs , and runtime.rs . We've introduced three new test files to cover key scenarios: