Function TestCatchJS

deps/v8/test/mjsunit/wasm/exceptions-api.js:154–184

(types_str, types, values)

})();

function TestCatchJS(types_str, types, values) {
  // Create a JS exception, catch it in wasm and check the unpacked value(s).
  let builder = new WasmModuleBuilder();
  let js_tag = new WebAssembly.Tag({parameters: types_str});
  let js_func_index = builder.addImport('m', 'js_func', kSig_v_v);
  let sig1 = makeSig(types, []);
  let sig2 = makeSig([], types);
  let js_tag_index = builder.addImportedTag("m", "js_tag", sig1);
  let tag_index = builder.addTag(sig1);
  let return_type = builder.addType(sig2);
  builder.addExportOfKind("wasm_tag", kExternalTag, tag_index);
  builder.addFunction("catch", sig2)
      .addBody([
        kExprTry, return_type,
        kExprCallFunction, js_func_index,
        kExprUnreachable,
        kExprCatch, js_tag_index,
        kExprCatch, tag_index,
        kExprEnd
      ]).exportFunc();
  let exception;
  function js_func() {
    throw exception;
  }
  let expected = values.length == 1 ? values[0] : values;
  let instance = builder.instantiate({m: {js_func, js_tag}});
  exception = new WebAssembly.Exception(js_tag, values);
  assertEquals(expected, instance.exports.catch());
  exception = new WebAssembly.Exception(instance.exports.wasm_tag, values);
  assertEquals(expected, instance.exports.catch());
}

(function TestCatchJSExceptionWithPayload() {
  print(arguments.callee.name);