2011-09-01 12:31:18 +00:00
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// Copyright 2011 the V8 project authors. All rights reserved.
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2014-11-25 14:48:27 +00:00
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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2011-09-01 12:31:18 +00:00
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// Test for conflicting variable bindings.
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2011-11-24 15:17:04 +00:00
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"use strict";
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2011-09-01 12:31:18 +00:00
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function CheckException(e) {
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var string = e.toString();
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assertTrue(string.indexOf("has already been declared") >= 0 ||
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2012-08-28 11:25:08 +00:00
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string.indexOf("redeclaration") >= 0);
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return 'Conflict';
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2011-09-01 12:31:18 +00:00
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}
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2014-07-09 11:35:05 +00:00
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function TestGlobal(s,e) {
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try {
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return eval(s + e);
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} catch (x) {
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return CheckException(x);
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}
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}
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2011-09-01 12:31:18 +00:00
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function TestFunction(s,e) {
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try {
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return eval("(function(){" + s + " return " + e + "})")();
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2011-09-01 12:31:18 +00:00
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} catch (x) {
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return CheckException(x);
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}
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}
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function TestBlock(s,e) {
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try {
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return eval("(function(){ {" + s + "} return " + e + "})")();
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2011-09-01 12:31:18 +00:00
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} catch (x) {
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return CheckException(x);
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}
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}
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function TestAll(expected,s,opt_e) {
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var e = "";
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var msg = s;
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if (opt_e) { e = opt_e; msg += opt_e; }
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assertEquals(expected === 'LocalConflict' ? 'NoConflict' : expected,
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TestGlobal(s,e), "global:'" + msg + "'");
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assertEquals(expected === 'LocalConflict' ? 'NoConflict' : expected,
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TestFunction(s,e), "function:'" + msg + "'");
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assertEquals(expected === 'LocalConflict' ? 'Conflict' : expected,
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TestBlock(s,e), "block:'" + msg + "'");
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2011-09-01 12:31:18 +00:00
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}
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function TestConflict(s) {
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TestAll('Conflict', s);
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TestAll('Conflict', 'eval("' + s + '");');
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2011-09-01 12:31:18 +00:00
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}
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function TestNoConflict(s) {
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TestAll('NoConflict', s, "'NoConflict'");
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TestAll('NoConflict', 'eval("' + s + '");', "'NoConflict'");
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2011-09-01 12:31:18 +00:00
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}
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function TestLocalConflict(s) {
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TestAll('LocalConflict', s, "'NoConflict'");
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TestAll('NoConflict', 'eval("' + s + '");', "'NoConflict'");
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}
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var letbinds = [ "let x;",
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"let x = 0;",
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"let x = undefined;",
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"let x = function() {};",
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"let x, y;",
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"let y, x;",
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"const x = 0;",
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"const x = undefined;",
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"const x = function() {};",
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"const x = 2, y = 3;",
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"const y = 4, x = 5;",
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2015-08-12 18:42:48 +00:00
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"class x { }",
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2011-09-01 12:31:18 +00:00
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];
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2015-08-12 18:42:48 +00:00
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function forCompatible(bind) {
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return !bind.startsWith('class');
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}
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var varbinds = [ "var x;",
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"var x = 0;",
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"var x = undefined;",
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"var x = function() {};",
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"var x, y;",
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"var y, x;",
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2011-09-01 12:31:18 +00:00
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];
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var funbind = "function x() {}";
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2011-09-01 12:31:18 +00:00
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for (var l = 0; l < letbinds.length; ++l) {
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// Test conflicting let/var bindings.
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for (var v = 0; v < varbinds.length; ++v) {
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// Same level.
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TestConflict(letbinds[l] + varbinds[v]);
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TestConflict(varbinds[v] + letbinds[l]);
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2011-09-01 12:31:18 +00:00
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// Different level.
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TestConflict(letbinds[l] + '{' + varbinds[v] + '}');
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TestConflict('{' + varbinds[v] +'}' + letbinds[l]);
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TestNoConflict(varbinds[v] + '{' + letbinds[l] + '}');
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TestNoConflict('{' + letbinds[l] + '}' + varbinds[v]);
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// For loop.
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2015-08-12 18:42:48 +00:00
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if (forCompatible(letbinds[l])) {
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TestConflict('for (' + letbinds[l] + '0;) {' + varbinds[v] + '}');
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}
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TestNoConflict('for (' + varbinds[v] + '0;) {' + letbinds[l] + '}');
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2011-09-01 12:31:18 +00:00
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}
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// Test conflicting let/let bindings.
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for (var k = 0; k < letbinds.length; ++k) {
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// Same level.
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2014-07-09 11:35:05 +00:00
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TestConflict(letbinds[l] + letbinds[k]);
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TestConflict(letbinds[k] + letbinds[l]);
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2011-09-01 12:31:18 +00:00
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// Different level.
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TestNoConflict(letbinds[l] + '{ ' + letbinds[k] + '}');
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TestNoConflict('{' + letbinds[k] +'} ' + letbinds[l]);
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// For loop.
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2015-08-12 18:42:48 +00:00
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if (forCompatible(letbinds[l])) {
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TestNoConflict('for (' + letbinds[l] + '0;) {' + letbinds[k] + '}');
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}
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if (forCompatible(letbinds[k])) {
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TestNoConflict('for (' + letbinds[k] + '0;) {' + letbinds[l] + '}');
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}
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2011-09-01 12:31:18 +00:00
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}
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2014-07-09 11:35:05 +00:00
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// Test conflicting function/let bindings.
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// Same level.
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TestConflict(letbinds[l] + funbind);
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TestConflict(funbind + letbinds[l]);
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// Different level.
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TestNoConflict(letbinds[l] + '{' + funbind + '}');
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TestNoConflict('{' + funbind + '}' + letbinds[l]);
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TestNoConflict(funbind + '{' + letbinds[l] + '}');
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TestNoConflict('{' + letbinds[l] + '}' + funbind);
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// For loop.
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2015-08-12 18:42:48 +00:00
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if (forCompatible(letbinds[l])) {
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TestNoConflict('for (' + letbinds[l] + '0;) {' + funbind + '}');
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}
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2014-07-09 11:35:05 +00:00
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2011-09-01 12:31:18 +00:00
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// Test conflicting parameter/let bindings.
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2014-07-09 11:35:05 +00:00
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TestConflict('(function(x) {' + letbinds[l] + '})();');
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}
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// Test conflicting function/var bindings.
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for (var v = 0; v < varbinds.length; ++v) {
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// Same level.
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TestLocalConflict(varbinds[v] + funbind);
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TestLocalConflict(funbind + varbinds[v]);
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// Different level.
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TestLocalConflict(funbind + '{' + varbinds[v] + '}');
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TestLocalConflict('{' + varbinds[v] +'}' + funbind);
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TestNoConflict(varbinds[v] + '{' + funbind + '}');
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TestNoConflict('{' + funbind + '}' + varbinds[v]);
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// For loop.
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TestNoConflict('for (' + varbinds[v] + '0;) {' + funbind + '}');
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2011-09-01 12:31:18 +00:00
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}
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// Test conflicting catch/var bindings.
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for (var v = 0; v < varbinds.length; ++v) {
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2014-11-25 14:48:27 +00:00
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TestNoConflict('try {} catch(x) {' + varbinds[v] + '}');
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2011-09-01 12:31:18 +00:00
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}
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// Test conflicting parameter/var bindings.
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for (var v = 0; v < varbinds.length; ++v) {
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2014-07-09 11:35:05 +00:00
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TestNoConflict('(function (x) {' + varbinds[v] + '})();');
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2011-09-01 12:31:18 +00:00
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}
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2014-07-09 11:35:05 +00:00
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// Test conflicting parameter/function bindings.
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TestNoConflict('(function (x) {' + funbind + '})();');
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