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extern crate wasmparser;
use std::env;
use std::fs::File;
use std::io;
use std::io::prelude::*;
use std::str;
use wasmparser::Parser;
use wasmparser::ParserState;
use wasmparser::WasmDecoder;
fn main() {
let args = env::args().collect::<Vec<_>>();
if args.len() != 2 {
println!("Usage: {} in.wasm", args[0]);
return;
}
let buf: Vec<u8> = read_wasm(&args[1]).unwrap();
let mut parser = Parser::new(&buf);
loop {
let state = parser.read();
match *state {
ParserState::BeginWasm { .. } => {
println!("====== Module");
}
ParserState::ExportSectionEntry {
field, ref kind, ..
} => {
println!(" Export {} {:?}", field, kind);
}
ParserState::ImportSectionEntry { module, field, .. } => {
println!(" Import {}::{}", module, field)
}
ParserState::EndWasm => break,
ParserState::Error(err) => panic!("Error: {:?}", err),
_ => ( /* println!(" Other {:?}", state); */ ),
}
}
}
fn read_wasm(file: &str) -> io::Result<Vec<u8>> {
let mut data = Vec::new();
let mut f = File::open(file)?;
f.read_to_end(&mut data)?;
Ok(data)
}
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