Macro try_let_instr

try_let_instr!() { /* proc-macro */ }

let / else style pattern matching and destructuring of instructions and their expressions.

try_let_instr! allows you to match a LowLevelILInstruction against a single pattern, binding variables if the match succeeds and executing the else branch if the match fails. It’s analogous to let-else syntax in Rust, but allows matching through expressions in a single step. This is useful for writing concise and readable instruction-matching code.

Example

try_let_instr!{
    let SetRegSsa(dest, Lsr(RegSsa(source), Const(5))) = instr else { return None }
}

This expands to a match on instr, binding dest and source if the pattern matches, or returning None if it does not.