yield-as-identifier.js

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/*

 * Any copyright is dedicated to the Public Domain.

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

*/

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

var BUGNUMBER = 1288459;

var summary = "|yield| is sometimes a valid identifier";

print(BUGNUMBER + ": " + summary);

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

 * BEGIN TEST *

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

function t(code)

  var strictSemi = " 'use strict'; " + code;

  var strictASI = " 'use strict' \n " + code;

  var creationFunctions = ["Function"];

  if (typeof evaluate === "function")

    creationFunctions.push("evaluate");

  if (typeof parseModule === "function")

    creationFunctions.push("parseModule");

  for (var func of creationFunctions)

    var g = newGlobal();

    var f = g[func];

    if (func === "parseModule")

      assertThrowsInstanceOf(() => f(code), g.SyntaxError);

    else

      f(code);

    assertThrowsInstanceOf(() => f(strictSemi), g.SyntaxError);

    assertThrowsInstanceOf(() => f(strictASI), g.SyntaxError);

t("var yield = 3;");

t("let yield = 3;");

t("const yield = 3;");

t("for (var yield = 3; ; ) break;");

t("for (let yield = 3; ; ) break;");

t("for (const yield = 3; ; ) break;");

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

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");