add benchmark script

benchmarks/wasm/main.js

@@ -0,0 +1,32 @@
+if (process.argv.length < 3) {
+    console.error('Invalid number of arguments');
+    process.exit(1);
+}
+
+const program = process.argv[2];
+const args = process.argv.slice(3);
+
+const wasm = await import('./target/wasm32-unknown-emscripten/release/wasm.js');
+const module = {
+    print: (str) => console.log(str),
+    printErr: (str) => console.error(str),
+}
+
+const Module = await wasm.default(module);
+
+// allocate strings to be able to pass them
+const arg_pointers = args.map(a => {
+    const arg_pointer = Module._malloc(a.length + 1); // +1 for \0
+    Module.stringToUTF8(a, arg_pointer, a.length + 1);
+    return arg_pointer;
+})
+const args_pointer = Module._malloc(args.length * 4); // 4 bytes for each pointer
+arg_pointers.forEach((pointer, i) => {
+    Module.setValue(args_pointer + i * 4, pointer, 'i32')
+});
+
+Module.ccall('execute', null, ['string', 'number', 'array'], [program, args.length, arg_pointers])
+
+// free allocated strings
+arg_pointers.forEach(pointer => Module._free(pointer))
+Module._free(arg_pointers)