Function parse_mem_ref

crates/asm-to-binary/src/assembler/parser.rs:479–485

Parse `"imm(rs1)"` -> (`rs1_reg`, `imm_i32`).

(s: &str)

// --- Operand parsers ---

// Parse an integer immediate: decimal, or `0x`/`0X` hex prefix.
fn parse_imm_i64(s: &str) -> Option<i64> {
    let s = s.trim();
    if let Some(hex) = s.strip_prefix("0x").or_else(|| s.strip_prefix("0X")) {
        i64::from_str_radix(hex, 16).ok()
    } else {
        s.parse::<i64>().ok()
    }
}