Function build_wat_offset_map

src/commands/hot_blocks.rs:698–714

Build a map from wasm bytecode offset to WAT disassembly text using wasmprinter.

(wasm_bytes: &[u8])

/// Build a map from wasm bytecode offset to WAT disassembly text using wasmprinter.
fn build_wat_offset_map(wasm_bytes: &[u8]) -> BTreeMap<u32, String> {
    let mut map = BTreeMap::new();
    let printer = wasmprinter::Config::new();
    let mut storage = String::new();
    let Ok(chunks) = printer.offsets_and_lines(wasm_bytes, &mut storage) else {
        return map;
    };
    for (offset, wat_line) in chunks {
        if let Some(offset) = offset {
            let trimmed = wat_line.trim();
            if !trimmed.is_empty() && !trimmed.starts_with('(') && !trimmed.starts_with(')') {
                map.insert(u32::try_from(offset).unwrap(), trimmed.to_string());
            }
        }
    }
    map
}

/// Read CLIF file for a given function, returning pairs of
/// (wasm_offset, clif_line).