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extern crate parity_wasm;
use std::env;
fn main() {
let args = env::args().collect::<Vec<_>>();
if args.len() != 3 {
println!("Usage: {} <wasm file> <index of function>", args[0]);
return;
}
let module = parity_wasm::deserialize_file(&args[1]).expect("Failed to load module");
let function_index = args[2].parse::<usize>().expect("Failed to parse function index");
if module.code_section().is_none() {
println!("no code in module!");
std::process::exit(1);
}
let sig = match module.function_section().unwrap().entries().get(function_index) {
Some(s) => s,
None => {
println!("no such function in module!");
std::process::exit(1)
}
};
let sig_type = &module.type_section().expect("No type section: module malformed").types()[sig.type_ref() as usize];
let code = &module.code_section().expect("Already checked, impossible").bodies()[function_index];
println!("signature: {:?}", sig_type);
println!("code: ");
for instruction in code.code().elements() {
println!("{}", instruction);
}
}
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