expression-closure-syntax.js

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// Any copyright is dedicated to the Public Domain.

// http://creativecommons.org/licenses/publicdomain/

//-----------------------------------------------------------------------------

var BUGNUMBER = 1416337;

var summary =

  "Expression closure syntax is only permitted for functions that constitute " +

  "entire AssignmentExpressions, not PrimaryExpressions that are themselves " +

  "components of larger binary expressions";

print(BUGNUMBER + ": " + summary);

/**************

 * BEGIN TEST *

 **************/

  function assertThrowsSyntaxError(code)

    function testOne(replacement)

      var x, rv;

try

        rv = eval(code.replace("@@@", replacement));

      catch (e)

        assertEq(e instanceof SyntaxError, true,

                 "should have thrown a SyntaxError, instead got: " + e);

        return;

      assertEq(true, false, "should have thrown, instead returned " + rv);

    testOne("function");

    testOne("async function");

  assertThrowsSyntaxError("x = ++@@@() 1");

  assertThrowsSyntaxError("x = delete @@@() 1");

  assertThrowsSyntaxError("x = new @@@() 1");

  assertThrowsSyntaxError("x = void @@@() 1");

  assertThrowsSyntaxError("x = +@@@() 1");

  assertThrowsSyntaxError("x = 1 + @@@() 1");

  assertThrowsSyntaxError("x = null != @@@() 1");

  assertThrowsSyntaxError("x = null != @@@() 0 ? 1 : a => {}");

  assertThrowsSyntaxError("x = @@@() 0 ? 1 : a => {} !== null");

  assertThrowsSyntaxError("x = @@@() 0 ? 1 : a => {}.toString");

  assertThrowsSyntaxError("x = @@@() 0 ? 1 : a => {}['toString']");

  assertThrowsSyntaxError("x = @@@() 0 ? 1 : a => {}``");

  assertThrowsSyntaxError("x = @@@() 0 ? 1 : a => {}()");

  assertThrowsSyntaxError("x = @@@() 0 ? 1 : a => {}++");

  assertThrowsSyntaxError("x = @@@() 0 ? 1 : a => {} || 0");

  assertThrowsSyntaxError("x = 0 || @@@() 0 ? 1 : a => {}");

  assertThrowsSyntaxError("x = @@@() 0 ? 1 : a => {} && true");

  assertThrowsSyntaxError("x = true && @@@() 0 ? 1 : a => {}");

if (typeof reportCompare === "function")

  reportCompare(true, true);