Add ToT WebGL conformance tests : part 8

conformance/more/unit.js

+/*
+Unit testing library for the OpenGL ES 2.0 HTML Canvas context
+*/
+
+/*
+** Copyright (c) 2012 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+/* -- plaform specific code -- */
+
+// WebKit
+if (window.testRunner && !window.layoutTestController) {
+  window.layoutTestController = window.testRunner;
+}
+
+if (window.layoutTestController) {
+  layoutTestController.overridePreference("WebKitWebGLEnabled", "1");
+  layoutTestController.dumpAsText();
+  layoutTestController.waitUntilDone();
+
+  // The WebKit testing system compares console output.
+  // Because the output of the WebGL Tests is GPU dependent
+  // we turn off console messages.
+  window.console.log = function() { };
+  window.console.error = function() { };
+
+  // RAF doesn't work in LayoutTests. Disable it so the tests will
+  // use setTimeout instead.
+  window.requestAnimationFrame = undefined;
+  window.webkitRequestAnimationFrame = undefined;
+}
+
+if (window.internals) {
+  window.internals.settings.setWebGLErrorsToConsoleEnabled(false);
+}
+
+/* -- end platform specific code --*/
+Tests = {
+  autorun : true,
+  message : null,
+  delay : 0,
+
+  startUnit : function(){ return []; },
+  setup : function() { return arguments; },
+  teardown : function() {},
+  endUnit : function() {}
+}
+
+var __testSuccess__ = true;
+var __testFailCount__ = 0;
+var __testLog__;
+var __backlog__ = [];
+
+Object.toSource = function(a, seen){
+  if (a == null) return "null";
+  if (typeof a == 'boolean') return a ? "true" : "false";
+  if (typeof a == 'string') return '"' + a.replace(/"/g, '\\"') + '"';
+  if (a instanceof HTMLElement) return a.toString();
+  if (a.width && a.height && a.data) return "[ImageData]";
+  if (a instanceof Array) {
+    if (!seen) seen = [];
+    var idx = seen.indexOf(a);
+    if (idx != -1) return '#'+(idx+1)+'#';
+    seen.unshift(a);
+    var srcs = a.map(function(o){ return Object.toSource(o,seen) });
+    var prefix = '';
+    idx = seen.indexOf(a);
+    if (idx != -1) prefix = '#'+(idx+1)+'=';
+    return prefix + '[' + srcs.join(", ") + ']';
+  }
+  if (typeof a == 'object') {
+    if (!seen) seen = [];
+    var idx = seen.indexOf(a);
+    if (idx != -1) return '#'+(idx+1)+'#';
+    seen.unshift(a);
+    var members = [];
+    var name;
+    try {
+      for (var i in a) {
+        if (i.search(/^[a-zA-Z0-9]+$/) != -1)
+          name = i;
+        else
+          name = '"' + i.replace(/"/g, '\\"') + '"';
+        var ai;
+        try { ai = a[i]; }
+        catch(e) { ai = 'null /*ERROR_ACCESSING*/'; }
+        var s = name + ':' + Object.toSource(ai, seen);
+        members.push(s);
+      }
+    } catch (e) {}
+    var prefix = '';
+    idx = seen.indexOf(a);
+    if (idx != -1) prefix = '#'+(idx+1)+'=';
+    return prefix + '{' + members.join(", ") + '}'
+  }
+  if (typeof a == 'function')
+    return '('+a.toString().replace(/\n/g, " ").replace(/\s+/g, " ")+')';
+  return a.toString();
+}
+
+function formatError(e) {
+  if (window.console) console.log(e);
+  var pathSegs = location.href.toString().split("/");
+  var currentDoc = e.lineNumber != null ? pathSegs[pathSegs.length - 1] : null;
+  var trace = (e.filename || currentDoc) + ":" + e.lineNumber + (e.trace ? "\n"+e.trace : "");
+  return e.message + "\n" + trace;
+}
+
+function runTests() {
+  var h = document.getElementById('test-status');
+  if (h == null) {
+    h = document.createElement('h1');
+    h.id = 'test-status';
+    document.body.appendChild(h);
+  }
+  h.textContent = "";
+  var log = document.getElementById('test-log');
+  if (log == null) {
+    log = document.createElement('div');
+    log.id = 'test-log';
+    document.body.appendChild(log);
+  }
+  while (log.childNodes.length > 0)
+    log.removeChild(log.firstChild);
+
+  var setup_args = [];
+
+  if (Tests.startUnit != null) {
+    __testLog__ = document.createElement('div');
+    try {
+      setup_args = Tests.startUnit();
+      if (__testLog__.childNodes.length > 0)
+        log.appendChild(__testLog__);
+    } catch(e) {
+      testFailed("startUnit", formatError(e));
+      log.appendChild(__testLog__);
+      printTestStatus();
+      return;
+    }
+  }
+
+  var testsRun = false;
+  var allTestsSuccessful = true;
+
+  for (var i in Tests) {
+    if (i.substring(0,4) != "test") continue;
+    __testLog__ = document.createElement('div');
+    __testSuccess__ = true;
+    try {
+      doTestNotify (i);
+      var args = setup_args;
+      if (Tests.setup != null)
+        args = Tests.setup.apply(Tests, setup_args);
+      Tests[i].apply(Tests, args);
+      if (Tests.teardown != null)
+        Tests.teardown.apply(Tests, args);
+    }
+    catch (e) {
+      testFailed(i, e.name, formatError(e));
+    }
+    if (__testSuccess__ == false) {
+      ++__testFailCount__;
+    }
+    var h = document.createElement('h2');
+    h.textContent = i;
+    __testLog__.insertBefore(h, __testLog__.firstChild);
+    log.appendChild(__testLog__);
+    allTestsSuccessful = allTestsSuccessful && __testSuccess__ == true;
+    reportTestResultsToHarness(__testSuccess__, i);
+    doTestNotify (i+"--"+(__testSuccess__?"OK":"FAIL"));
+    testsRun = true;
+  }
+
+  printTestStatus(testsRun);
+  if (Tests.endUnit != null) {
+    __testLog__ = document.createElement('div');
+    try {
+      Tests.endUnit.apply(Tests, setup_args);
+      if (__testLog__.childNodes.length > 0)
+        log.appendChild(__testLog__);
+    } catch(e) {
+      testFailed("endUnit", e.name, formatError(e));
+      log.appendChild(__testLog__);
+    }
+  }
+  notifyFinishedToHarness(allTestsSuccessful, "finished tests");
+}
+
+function doTestNotify(name) {
+  //try {
+  //  var xhr = new XMLHttpRequest();
+  //  xhr.open("GET", "http://localhost:8888/"+name, true);
+  //  xhr.send(null);
+  //} catch(e) {}
+}
+
+function testFailed(assertName, name) {
+  var d = document.createElement('div');
+  var h = document.createElement('h3');
+  var d1 = document.createElement("span");
+  h.appendChild(d1);
+  d1.appendChild(document.createTextNode("FAIL: "));
+  d1.style.color = "red";
+  h.appendChild(document.createTextNode(
+      name==null ? assertName : name + " (in " + assertName + ")"));
+  d.appendChild(h);
+  var args = []
+  for (var i=2; i<arguments.length; i++) {
+    var a = arguments[i];
+    var p = document.createElement('p');
+    p.style.whiteSpace = 'pre';
+    p.textContent = (a == null) ? "null" :
+                    (typeof a == 'boolean' || typeof a == 'string') ? a : Object.toSource(a);
+    args.push(p.textContent);
+    d.appendChild(p);
+  }
+  __testLog__.appendChild(d);
+  __testSuccess__ = false;
+  doTestNotify([assertName, name].concat(args).join("--"));
+}
+
+function testPassed(assertName, name) {
+  var d = document.createElement('div');
+  var h = document.createElement('h3');
+  var d1 = document.createElement("span");
+  h.appendChild(d1);
+  d1.appendChild(document.createTextNode("PASS: "));
+  d1.style.color = "green";
+  h.appendChild(document.createTextNode(
+      name==null ? assertName : name + " (in " + assertName + ")"));
+  d.appendChild(h);
+  var args = []
+  for (var i=2; i<arguments.length; i++) {
+    var a = arguments[i];
+    var p = document.createElement('p');
+    p.style.whiteSpace = 'pre';
+    p.textContent = (a == null) ? "null" :
+                    (typeof a == 'boolean' || typeof a == 'string') ? a : Object.toSource(a);
+    args.push(p.textContent);
+    d.appendChild(p);
+  }
+  __testLog__.appendChild(d);
+  doTestNotify([assertName, name].concat(args).join("--"));
+}
+
+function checkTestSuccess() {
+  return __testFailCount__ == 0;
+}
+
+window.addEventListener('load', function(){
+  for (var i=0; i<__backlog__.length; i++)
+    log(__backlog__[i]);
+}, false);
+
+function log(msg) {
+  var p = document.createElement('p');
+  var a = [];
+  for (var i=0; i<arguments.length; i++)
+    a.push(arguments[i]);
+  p.textContent = a.join(", ");
+  if (!__testLog__) {
+    if (document.body)
+      document.body.appendChild(p);
+    else
+      __backlog__.push(msg);
+  } else {
+    __testLog__.appendChild(p);
+  }
+}
+
+function printTestStatus(testsRun) {
+  var status = document.getElementById('test-status');
+  if (testsRun) {
+    status.className = checkTestSuccess() ? 'ok' : 'fail';
+    status.textContent = checkTestSuccess() ? "PASS" : "FAIL";
+  } else {
+    status.className = 'fail';
+    status.textContent = "NO TESTS FOUND";
+  }
+}
+
+function assertFail(name, f) {
+  if (f == null) { f = name; name = null; }
+  var r = false;
+  try { f(); } catch(e) { r=true; }
+  if (!r) {
+    testFailed("assertFail", name, f);
+    return false;
+  } else {
+    testPassed("assertFail", name, f);
+    return true;
+  }
+}
+
+function assertOk(name, f) {
+  if (f == null) { f = name; name = null; }
+  var r = false;
+  var err;
+  try { f(); r=true; } catch(e) { err = e; }
+  if (!r) {
+    testFailed("assertOk", name, f, err.toString());
+    return false;
+  } else {
+    testPassed("assertOk", name, f);
+    return true;
+  }
+}
+
+function assert(name, v) {
+  if (v == null) { v = name; name = null; }
+  if (!v) {
+    testFailed("assert", name, v);
+    return false;
+  } else {
+    testPassed("assert", name, v);
+    return true;
+  }
+}
+
+function assertProperty(name, v, p) {
+  if (p == null) { p = v; v = name; name = p; }
+  if (v[p] == null) {
+    testFailed("assertProperty", name);
+    return false;
+  } else {
+    testPassed("assertProperty", name);
+    return true;
+  }
+}
+
+function compare(a,b) {
+  if (typeof a == 'number' && typeof b == 'number') {
+    return a == b;
+  } else {
+    return Object.toSource(a) == Object.toSource(b);
+  }
+}
+
+function assertEquals(name, v, p) {
+  if (p == null) { p = v; v = name; name = null; }
+  if (!compare(v, p)) {
+    testFailed("assertEquals", name, v, p);
+    return false;
+  } else {
+    testPassed("assertEquals", name, v, p);
+    return true;
+  }
+}
+
+function assertArrayEquals(name, v, p) {
+  if (p == null) { p = v; v = name; name = null; }
+  if (!v) {
+    testFailed("assertArrayEquals: first array undefined", name, v, p);
+    return false;
+  }
+  if (!p) {
+    testFailed("assertArrayEquals: second array undefined", name, v, p);
+    return false;
+  }
+  if (v.length != p.length) {
+    testFailed("assertArrayEquals", name, v, p);
+    return false;
+  }
+  for (var ii = 0; ii < v.length; ++ii) {
+    if (v[ii] != p[ii]) {
+      testFailed("assertArrayEquals", name, v, p);
+      return false;
+    }
+  }
+  testPassed("assertArrayEquals", name, v, p);
+  return true;
+}
+
+function assertNotEquals(name, v, p) {
+  if (p == null) { p = v; v = name; name = null; }
+  if (compare(v, p)) {
+    testFailed("assertNotEquals", name, v, p)
+    return false;
+  } else {
+    testPassed("assertNotEquals", name, v, p)
+    return true;
+  }
+}
+
+function time(elementId, f) {
+    var s = document.getElementById(elementId);
+    var t0 = new Date().getTime();
+    f();
+    var t1 = new Date().getTime();
+    s.textContent = 'Elapsed: '+(t1-t0)+' ms';
+}
+
+function randomFloat () {
+    // note that in fuzz-testing, this can used as the size of a buffer to allocate.
+    // so it shouldn't return astronomic values. The maximum value 10000000 is already quite big.
+    var fac = 1.0;
+    var r = Math.random();
+    if (r < 0.25)
+        fac = 10;
+    else if (r < 0.4)
+        fac = 100;
+    else if (r < 0.5)
+        fac = 1000;
+    else if (r < 0.6)
+        fac = 100000;
+    else if (r < 0.7)
+        fac = 10000000;
+    else if (r < 0.8)
+        fac = NaN;
+    return -0.5*fac + Math.random() * fac;
+}
+function randomFloatFromRange(lo, hi) {
+  var r = Math.random();
+  if (r < 0.05)
+    return lo;
+  else if (r > 0.95)
+    return hi;
+  else
+    return lo + Math.random()*(hi-lo);
+}
+function randomInt (sz) {
+  if (sz != null)
+    return Math.floor(Math.random()*sz);
+  else
+    return Math.floor(randomFloat());
+}
+function randomIntFromRange(lo, hi) {
+  return Math.floor(randomFloatFromRange(lo, hi));
+}
+function randomLength () {
+    var l = Math.floor(Math.random() * 256);
+    if (Math.random < 0.5) l = l / 10;
+    if (Math.random < 0.3) l = l / 10;
+    return l;
+}
+function randomSmallIntArray () {
+    var l = randomLength();
+    var s = new Array(l);
+    for (var i=0; i<l; i++)
+        s[i] = Math.floor(Math.random() * 256)-1;
+    return s;
+}
+function randomFloatArray () {
+    var l = randomLength();
+    var s = new Array(l);
+    for (var i=0; i<l; i++)
+        s[i] = randomFloat();
+    return s;
+}
+function randomIntArray () {
+    var l = randomLength();
+    var s = new Array(l);
+    for (var i=0; i<l; i++)
+        s[i] = randomFloat();
+    return s;
+}
+function randomMixedArray () {
+    var l = randomLength();
+    var s = new Array(l);
+    for (var i=0; i<l; i++)
+        s[i] = randomNonArray();
+    return s;
+}
+function randomArray () {
+    var r = Math.random();
+    if (r < 0.3)
+        return randomFloatArray();
+    else if (r < 0.6)
+        return randomIntArray();
+    else if (r < 0.8)
+        return randomSmallIntArray();
+    else
+        return randomMixedArray();
+}
+function randomString () {
+    return String.fromCharCode.apply(String, randomSmallIntArray());
+}
+function randomGLConstant () {
+    return GLConstants[Math.floor(Math.random() * GLConstants.length)];
+}
+
+function randomNonArray() {
+    var r = Math.random();
+    if (r < 0.25) {
+        return randomFloat();
+    } else if (r < 0.6) {
+        return randomInt();
+    } else if (r < 0.7) {
+        return (r < 0.65);
+    } else if (r < 0.87) {
+        return randomString();
+    } else if (r < 0.98) {
+        return randomGLConstant();
+    } else {
+        return null;
+    }
+}
+
+function generateRandomArg(pos, count) {
+    if (pos == 0 && Math.random() < 0.5)
+        return randomGLConstant();
+    if (pos == count-1 && Math.random() < 0.25)
+        if (Math.random() < 0.5)
+            return randomString();
+        else
+            return randomArray();
+    var r = Math.random();
+    if (r < 0.25) {
+        return randomFloat();
+    } else if (r < 0.6) {
+        return randomInt();
+    } else if (r < 0.7) {
+        return (r < 0.65);
+    } else if (r < 0.77) {
+        return randomString();
+    } else if (r < 0.84) {
+        return randomArray();
+    } else if (r < 0.98) {
+        return randomGLConstant();
+    } else {
+        return null;
+    }
+}
+
+
+function generateRandomArgs(count) {
+    var arr = new Array(count);
+    for (var i=0; i<count; i++)
+        arr[i] = generateRandomArg(i, count);
+    return arr;
+}
+
+// qc (arg1gen, arg2gen, ..., predicate)
+// qc (randomString, randomInt, randomInt, function(s,i,j){ s.substring(i,j) })
+function qc() {
+}
+
+GLConstants = [
+1,
+0x00000100,
+0x00000400,
+0x00004000,
+0x0000,
+0x0001,
+0x0002,
+0x0003,
+0x0004,
+0x0005,
+0x0006,
+0,
+1,
+0x0300,
+0x0301,
+0x0302,
+0x0303,
+0x0304,
+0x0305,
+0x0306,
+0x0307,
+0x0308,
+0x8006,
+0x8009,
+0x8009,
+0x883D,
+0x800A,
+0x800B,
+0x80C8,
+0x80C9,
+0x80CA,
+0x80CB,
+0x8001,
+0x8002,
+0x8003,
+0x8004,
+0x8005,
+0x8892,
+0x8893,
+0x8894,
+0x8895,
+0x88E0,
+0x88E4,
+0x88E8,
+0x8764,
+0x8765,
+0x8626,
+0x0404,
+0x0405,
+0x0408,
+0x0DE1,
+0x0B44,
+0x0BE2,
+0x0BD0,
+0x0B90,
+0x0B71,
+0x0C11,
+0x8037,
+0x809E,
+0x80A0,
+0,
+0x0500,
+0x0501,
+0x0502,
+0x0505,
+0x0900,
+0x0901,
+0x0B21,
+0x846D,
+0x846E,
+0x0B45,
+0x0B46,
+0x0B70,
+0x0B72,
+0x0B73,
+0x0B74,
+0x0B91,
+0x0B92,
+0x0B94,
+0x0B95,
+0x0B96,
+0x0B97,
+0x0B93,
+0x0B98,
+0x8800,
+0x8801,
+0x8802,
+0x8803,
+0x8CA3,
+0x8CA4,
+0x8CA5,
+0x0BA2,
+0x0C10,
+0x0C22,
+0x0C23,
+0x0CF5,
+0x0D05,
+0x0D33,
+0x0D3A,
+0x0D50,
+0x0D52,
+0x0D53,
+0x0D54,
+0x0D55,
+0x0D56,
+0x0D57,
+0x2A00,
+0x8038,
+0x8069,
+0x80A8,
+0x80A9,
+0x80AA,
+0x80AB,
+0x86A2,
+0x86A3,
+0x1100,
+0x1101,
+0x1102,
+0x8192,
+0x1400,
+0x1401,
+0x1402,
+0x1403,
+0x1404,
+0x1405,
+0x1406,
+0x140C,
+0x1902,
+0x1906,
+0x1907,
+0x1908,
+0x1909,
+0x190A,
+0x8033,
+0x8034,
+0x8363,
+0x8B30,
+0x8B31,
+0x8869,
+0x8DFB,
+0x8DFC,
+0x8B4D,
+0x8B4C,
+0x8872,
+0x8DFD,
+0x8B4F,
+0x8B80,
+0x8B82,
+0x8B83,
+0x8B85,
+0x8B86,
+0x8B87,
+0x8B89,
+0x8B8A,
+0x8B8C,
+0x8B8D,
+0x0200,
+0x0201,
+0x0202,
+0x0203,
+0x0204,
+0x0205,
+0x0206,
+0x0207,
+0x1E00,
+0x1E01,
+0x1E02,
+0x1E03,
+0x150A,
+0x8507,
+0x8508,
+0x1F00,
+0x1F01,
+0x1F02,
+0x1F03,
+0x2600,
+0x2601,
+0x2700,
+0x2701,
+0x2702,
+0x2703,
+0x2800,
+0x2801,
+0x2802,
+0x2803,
+0x1702,
+0x8513,
+0x8514,
+0x8515,
+0x8516,
+0x8517,
+0x8518,
+0x8519,
+0x851A,
+0x851C,
+0x84C0,
+0x84C1,
+0x84C2,
+0x84C3,
+0x84C4,
+0x84C5,
+0x84C6,
+0x84C7,
+0x84C8,
+0x84C9,
+0x84CA,
+0x84CB,
+0x84CC,
+0x84CD,
+0x84CE,
+0x84CF,
+0x84D0,
+0x84D1,
+0x84D2,
+0x84D3,
+0x84D4,
+0x84D5,
+0x84D6,
+0x84D7,
+0x84D8,
+0x84D9,
+0x84DA,
+0x84DB,
+0x84DC,
+0x84DD,
+0x84DE,
+0x84DF,
+0x84E0,
+0x2901,
+0x812F,
+0x8370,
+0x8B50,
+0x8B51,
+0x8B52,
+0x8B53,
+0x8B54,
+0x8B55,
+0x8B56,
+0x8B57,
+0x8B58,
+0x8B59,
+0x8B5A,
+0x8B5B,
+0x8B5C,
+0x8B5E,
+0x8B60,
+0x8622,
+0x8623,
+0x8624,
+0x8625,
+0x886A,
+0x8645,
+0x889F,
+0x8B9A,
+0x8B9B,
+0x8B81,
+0x8B84,
+0x8B88,
+0x8DFA,
+0x8DF8,
+0x8DF9,
+0x8DF0,
+0x8DF1,
+0x8DF2,
+0x8DF3,
+0x8DF4,
+0x8DF5,
+0x8D40,
+0x8D41,
+0x8056,
+0x8057,
+0x8D62,
+0x81A5,
+0x1901,
+0x8D48,
+0x8D42,
+0x8D43,
+0x8D44,
+0x8D50,
+0x8D51,
+0x8D52,
+0x8D53,
+0x8D54,
+0x8D55,
+0x8CD0,
+0x8CD1,
+0x8CD2,
+0x8CD3,
+0x8CE0,
+0x8D00,
+0x8D20,
+0,
+0x8CD5,
+0x8CD6,
+0x8CD7,
+0x8CD9,
+0x8CDD,
+0x8CA6,
+0x8CA7,
+0x84E8,
+0x0506,
+0x809D
+];
+
+function reportTestResultsToHarness(success, msg) {
+  if (window.parent.webglTestHarness) {
+    window.parent.webglTestHarness.reportResults(window.location.pathname, success, msg);
+  }
+}
+
+function notifyFinishedToHarness() {
+  if (window.parent.webglTestHarness) {
+    window.parent.webglTestHarness.notifyFinished(window.location.pathname);
+  }
+}
+
+function initTests() {
+  if (Tests.message != null) {
+    var h = document.getElementById('test-message');
+    if (h == null) {
+      h = document.createElement('p');
+      h.id = 'test-message';
+      document.body.insertBefore(h, document.body.firstChild);
+    }
+    h.textContent = Tests.message;
+  }
+  if (Tests.autorun) {
+    runTests();
+  } else {
+    var h = document.getElementById('test-run');
+    if (h == null) {
+      h = document.createElement('input');
+      h.type = 'submit';
+      h.value = "Run tests";
+      h.addEventListener('click', function(ev){
+        runTests();
+        ev.preventDefault();
+      }, false);
+      h.id = 'test-run';
+      document.body.insertBefore(h, document.body.firstChild);
+    }
+    h.textContent = Tests.message;
+  }
+
+}
+
+window.addEventListener('load', function(){
+  // let the browser hopefully finish updating the gl canvas surfaces if we are given a delay
+  if (Tests.delay)
+    setTimeout(initTests, Tests.delay);
+  else
+    initTests()
+}, false);
+