test/binaryen.js/global.js


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function assert(x) {
  if (!x) throw 'error!';
}

function cleanInfo(info) {
  var ret = {};
  for (var x in info) {
    if (x !== 'name' && x !== 'body' && x !== 'type' && x !== 'init') {
      ret[x] = info[x];
    }
  }
  return ret;
}

function test() {
  var module = new Binaryen.Module();
  module.setFeatures(Binaryen.Features.MVP | Binaryen.Features.MutableGlobals);

  var initExpr = module.i32.const(1);
  var global = module.addGlobal("a-global", Binaryen.i32, false, initExpr);

  console.log("GetGlobal is equal: " + (global === module.getGlobal("a-global")));

  var globalInfo = Binaryen.getGlobalInfo(global);
  console.log("getGlobalInfo=" + JSON.stringify(cleanInfo(globalInfo)));

  var initExpInfo = Binaryen.getExpressionInfo(globalInfo.init);
  console.log("getExpressionInfo(init)=" + JSON.stringify(cleanInfo(initExpInfo)));
  console.log(Binaryen.emitText(globalInfo.init));

  module.addGlobalExport("a-global", "a-global-exp");
  module.addGlobalImport("a-global-imp", "module", "base", Binaryen.i32, false);
  module.addGlobalImport("a-mut-global-imp", "module", "base", Binaryen.i32, true);

  assert(module.validate());
  console.log(module.emitText());

  module.removeGlobal("a-global");
  module.removeExport("a-global-exp");

  assert(module.validate());
  console.log(module.emitText());
}

Binaryen.ready.then(test);