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wasm_interp: support WASI argc/argv, and writing to stdout/stderr

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Brian Carroll 2022-12-03 12:28:20 +00:00
parent 736630b53f
commit 284dc6fa51
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GPG key ID: 5C7B2EC4101703C0
4 changed files with 386 additions and 69 deletions
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17
crates/wasm_interp/src/main.rs
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@ -1,4 +1,4 @@
use bumpalo::Bump;
use bumpalo::{collections::Vec, Bump};
use clap::ArgAction;
use clap::{Arg, Command};
use std::ffi::OsString;
@ -6,7 +6,7 @@ use std::fs;
use std::io;
use std::process;
use roc_wasm_interp::{Instance, DEFAULT_IMPORTS};
use roc_wasm_interp::{DefaultImportDispatcher, Instance};
use roc_wasm_module::WasmModule;
pub const FLAG_FUNCTION: &str = "function";
@ -61,10 +61,7 @@ fn main() -> io::Result<()> {
let start_fn_name = matches.get_one::<String>(FLAG_FUNCTION).unwrap();
let is_debug_mode = matches.get_flag(FLAG_DEBUG);
let is_hex_format = matches.get_flag(FLAG_HEX);
let start_arg_strings = matches
.get_many::<String>(ARGS_FOR_APP)
.unwrap_or_default()
.map(|s| s.as_str());
let start_arg_strings = matches.get_many::<String>(ARGS_FOR_APP).unwrap_or_default();
// Load the WebAssembly binary file
@ -87,15 +84,17 @@ fn main() -> io::Result<()> {
// Create an execution instance
let mut inst = Instance::for_module(&arena, &module, DEFAULT_IMPORTS, is_debug_mode)
.unwrap_or_else(|e| {
let args = Vec::from_iter_in(start_arg_strings, &arena);
let dispatcher = DefaultImportDispatcher::new(&args);
let mut inst =
Instance::for_module(&arena, &module, dispatcher, is_debug_mode).unwrap_or_else(|e| {
eprintln!("{}", e);
process::exit(2);
});
// Run
let result = inst.call_export_from_cli(&module, start_fn_name, start_arg_strings);
let result = inst.call_export_from_cli(&module, start_fn_name, &args);
// Print out return value, if any