'use strict';
var ReactInstanceMap = require('ReactInstanceMap');
var ReactCurrentOwner = require('react/lib/ReactCurrentOwner');
var getComponentName = require('getComponentName');
var invariant = require('fbjs/lib/invariant');
if (__DEV__) {
var warning = require('fbjs/lib/warning');
}
var _require = require('ReactTypeOfWork'),
HostRoot = _require.HostRoot,
HostComponent = _require.HostComponent,
HostText = _require.HostText,
ClassComponent = _require.ClassComponent;
var _require2 = require('ReactTypeOfSideEffect'),
NoEffect = _require2.NoEffect,
Placement = _require2.Placement;
var MOUNTING = 1;
var MOUNTED = 2;
var UNMOUNTED = 3;
function isFiberMountedImpl(fiber) {
var node = fiber;
if (!fiber.alternate) {
if ((node.effectTag & Placement) !== NoEffect) {
return MOUNTING;
}
while (node.return) {
node = node.return;
if ((node.effectTag & Placement) !== NoEffect) {
return MOUNTING;
}
}
} else {
while (node.return) {
node = node.return;
}
}
if (node.tag === HostRoot) {
return MOUNTED;
}
return UNMOUNTED;
}
exports.isFiberMounted = function (fiber) {
return isFiberMountedImpl(fiber) === MOUNTED;
};
exports.isMounted = function (component) {
if (__DEV__) {
var owner = ReactCurrentOwner.current;
if (owner !== null && owner.tag === ClassComponent) {
var ownerFiber = owner;
var instance = ownerFiber.stateNode;
warning(instance._warnedAboutRefsInRender, '%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(ownerFiber) || 'A component');
instance._warnedAboutRefsInRender = true;
}
}
var fiber = ReactInstanceMap.get(component);
if (!fiber) {
return false;
}
return isFiberMountedImpl(fiber) === MOUNTED;
};
function assertIsMounted(fiber) {
invariant(isFiberMountedImpl(fiber) === MOUNTED, 'Unable to find node on an unmounted component.');
}
function findCurrentFiberUsingSlowPath(fiber) {
var alternate = fiber.alternate;
if (!alternate) {
var state = isFiberMountedImpl(fiber);
invariant(state !== UNMOUNTED, 'Unable to find node on an unmounted component.');
if (state === MOUNTING) {
return null;
}
return fiber;
}
var a = fiber;
var b = alternate;
while (true) {
var parentA = a.return;
var parentB = parentA ? parentA.alternate : null;
if (!parentA || !parentB) {
break;
}
if (parentA.child === parentB.child) {
var child = parentA.child;
while (child) {
if (child === a) {
assertIsMounted(parentA);
return fiber;
}
if (child === b) {
assertIsMounted(parentA);
return alternate;
}
child = child.sibling;
}
invariant(false, 'Unable to find node on an unmounted component.');
}
if (a.return !== b.return) {
a = parentA;
b = parentB;
} else {
var didFindChild = false;
var _child = parentA.child;
while (_child) {
if (_child === a) {
didFindChild = true;
a = parentA;
b = parentB;
break;
}
if (_child === b) {
didFindChild = true;
b = parentA;
a = parentB;
break;
}
_child = _child.sibling;
}
if (!didFindChild) {
_child = parentB.child;
while (_child) {
if (_child === a) {
didFindChild = true;
a = parentB;
b = parentA;
break;
}
if (_child === b) {
didFindChild = true;
b = parentB;
a = parentA;
break;
}
_child = _child.sibling;
}
invariant(didFindChild, 'Child was not found in either parent set. This indicates a bug ' + 'related to the return pointer.');
}
}
invariant(a.alternate === b, "Return fibers should always be each others' alternates.");
}
invariant(a.tag === HostRoot, 'Unable to find node on an unmounted component.');
if (a.stateNode.current === a) {
return fiber;
}
return alternate;
}
exports.findCurrentFiberUsingSlowPath = findCurrentFiberUsingSlowPath;
exports.findCurrentHostFiber = function (parent) {
var currentParent = findCurrentFiberUsingSlowPath(parent);
if (!currentParent) {
return null;
}
var node = currentParent;
while (true) {
if (node.tag === HostComponent || node.tag === HostText) {
return node;
} else if (node.child) {
node.child.return = node;
node = node.child;
continue;
}
if (node === currentParent) {
return null;
}
while (!node.sibling) {
if (!node.return || node.return === currentParent) {
return null;
}
node = node.return;
}
node.sibling.return = node.return;
node = node.sibling;
}
return null;
};
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a43edc7c31af0cbb48aec2726d7d687ae6aba4ReactFiberTreeReflection.js
Source: a43edc7c31af0cbb48aec2726d7d687ae6aba4ReactFiberTreeReflection.js 
1
2
3'use strict';
4
5var ReactInstanceMap = require('ReactInstanceMap');
6var ReactCurrentOwner = require('react/lib/ReactCurrentOwner');
7
8var getComponentName = require('getComponentName');
9var invariant = require('fbjs/lib/invariant');
10
11if (__DEV__) {
12 var warning = require('fbjs/lib/warning');
13}
14
15var _require = require('ReactTypeOfWork'),
16 HostRoot = _require.HostRoot,
17 HostComponent = _require.HostComponent,
18 HostText = _require.HostText,
19 ClassComponent = _require.ClassComponent;
20
21var _require2 = require('ReactTypeOfSideEffect'),
22 NoEffect = _require2.NoEffect,
23 Placement = _require2.Placement;
24
25var MOUNTING = 1;
26var MOUNTED = 2;
27var UNMOUNTED = 3;
28
29function isFiberMountedImpl(fiber) {
30 var node = fiber;
31 if (!fiber.alternate) {
32 if ((node.effectTag & Placement) !== NoEffect) {
33 return MOUNTING;
34 }
35 while (node.return) {
36 node = node.return;
37 if ((node.effectTag & Placement) !== NoEffect) {
38 return MOUNTING;
39 }
40 }
41 } else {
42 while (node.return) {
43 node = node.return;
44 }
45 }
46 if (node.tag === HostRoot) {
47 return MOUNTED;
48 }
49
50 return UNMOUNTED;
51}
52exports.isFiberMounted = function (fiber) {
53 return isFiberMountedImpl(fiber) === MOUNTED;
54};
55
56exports.isMounted = function (component) {
57 if (__DEV__) {
58 var owner = ReactCurrentOwner.current;
59 if (owner !== null && owner.tag === ClassComponent) {
60 var ownerFiber = owner;
61 var instance = ownerFiber.stateNode;
62 warning(instance._warnedAboutRefsInRender, '%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(ownerFiber) || 'A component');
63 instance._warnedAboutRefsInRender = true;
64 }
65 }
66
67 var fiber = ReactInstanceMap.get(component);
68 if (!fiber) {
69 return false;
70 }
71 return isFiberMountedImpl(fiber) === MOUNTED;
72};
73
74function assertIsMounted(fiber) {
75 invariant(isFiberMountedImpl(fiber) === MOUNTED, 'Unable to find node on an unmounted component.');
76}
77
78function findCurrentFiberUsingSlowPath(fiber) {
79 var alternate = fiber.alternate;
80 if (!alternate) {
81 var state = isFiberMountedImpl(fiber);
82 invariant(state !== UNMOUNTED, 'Unable to find node on an unmounted component.');
83 if (state === MOUNTING) {
84 return null;
85 }
86 return fiber;
87 }
88
89 var a = fiber;
90 var b = alternate;
91 while (true) {
92 var parentA = a.return;
93 var parentB = parentA ? parentA.alternate : null;
94 if (!parentA || !parentB) {
95 break;
96 }
97
98 if (parentA.child === parentB.child) {
99 var child = parentA.child;
100 while (child) {
101 if (child === a) {
102 assertIsMounted(parentA);
103 return fiber;
104 }
105 if (child === b) {
106 assertIsMounted(parentA);
107 return alternate;
108 }
109 child = child.sibling;
110 }
111
112 invariant(false, 'Unable to find node on an unmounted component.');
113 }
114
115 if (a.return !== b.return) {
116 a = parentA;
117 b = parentB;
118 } else {
119 var didFindChild = false;
120 var _child = parentA.child;
121 while (_child) {
122 if (_child === a) {
123 didFindChild = true;
124 a = parentA;
125 b = parentB;
126 break;
127 }
128 if (_child === b) {
129 didFindChild = true;
130 b = parentA;
131 a = parentB;
132 break;
133 }
134 _child = _child.sibling;
135 }
136 if (!didFindChild) {
137 _child = parentB.child;
138 while (_child) {
139 if (_child === a) {
140 didFindChild = true;
141 a = parentB;
142 b = parentA;
143 break;
144 }
145 if (_child === b) {
146 didFindChild = true;
147 b = parentB;
148 a = parentA;
149 break;
150 }
151 _child = _child.sibling;
152 }
153 invariant(didFindChild, 'Child was not found in either parent set. This indicates a bug ' + 'related to the return pointer.');
154 }
155 }
156
157 invariant(a.alternate === b, "Return fibers should always be each others' alternates.");
158 }
159
160 invariant(a.tag === HostRoot, 'Unable to find node on an unmounted component.');
161 if (a.stateNode.current === a) {
162 return fiber;
163 }
164
165 return alternate;
166}
167exports.findCurrentFiberUsingSlowPath = findCurrentFiberUsingSlowPath;
168
169exports.findCurrentHostFiber = function (parent) {
170 var currentParent = findCurrentFiberUsingSlowPath(parent);
171 if (!currentParent) {
172 return null;
173 }
174
175 var node = currentParent;
176 while (true) {
177 if (node.tag === HostComponent || node.tag === HostText) {
178 return node;
179 } else if (node.child) {
180 node.child.return = node;
181 node = node.child;
182 continue;
183 }
184 if (node === currentParent) {
185 return null;
186 }
187 while (!node.sibling) {
188 if (!node.return || node.return === currentParent) {
189 return null;
190 }
191 node = node.return;
192 }
193 node.sibling.return = node.return;
194 node = node.sibling;
195 }
196
197 return null;
198};
468cd4ceebbd8b40783182eabbbe342c7c8e0bReactFiberTreeReflection.js
Source: 468cd4ceebbd8b40783182eabbbe342c7c8e0bReactFiberTreeReflection.js
1
2
3'use strict';
4
5var ReactInstanceMap = require('ReactInstanceMap');
6var ReactCurrentOwner = require('react/lib/ReactCurrentOwner');
7
8var getComponentName = require('getComponentName');
9var invariant = require('fbjs/lib/invariant');
10
11if (__DEV__) {
12 var warning = require('fbjs/lib/warning');
13}
14
15var _require = require('ReactTypeOfWork'),
16 HostRoot = _require.HostRoot,
17 HostComponent = _require.HostComponent,
18 HostText = _require.HostText,
19 ClassComponent = _require.ClassComponent;
20
21var _require2 = require('ReactTypeOfSideEffect'),
22 NoEffect = _require2.NoEffect,
23 Placement = _require2.Placement;
24
25var MOUNTING = 1;
26var MOUNTED = 2;
27var UNMOUNTED = 3;
28
29function isFiberMountedImpl(fiber) {
30 var node = fiber;
31 if (!fiber.alternate) {
32 if ((node.effectTag & Placement) !== NoEffect) {
33 return MOUNTING;
34 }
35 while (node.return) {
36 node = node.return;
37 if ((node.effectTag & Placement) !== NoEffect) {
38 return MOUNTING;
39 }
40 }
41 } else {
42 while (node.return) {
43 node = node.return;
44 }
45 }
46 if (node.tag === HostRoot) {
47 return MOUNTED;
48 }
49
50 return UNMOUNTED;
51}
52exports.isFiberMounted = function (fiber) {
53 return isFiberMountedImpl(fiber) === MOUNTED;
54};
55
56exports.isMounted = function (component) {
57 if (__DEV__) {
58 var owner = ReactCurrentOwner.current;
59 if (owner !== null && owner.tag === ClassComponent) {
60 var ownerFiber = owner;
61 var instance = ownerFiber.stateNode;
62 warning(instance._warnedAboutRefsInRender, '%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(ownerFiber) || 'A component');
63 instance._warnedAboutRefsInRender = true;
64 }
65 }
66
67 var fiber = ReactInstanceMap.get(component);
68 if (!fiber) {
69 return false;
70 }
71 return isFiberMountedImpl(fiber) === MOUNTED;
72};
73
74function assertIsMounted(fiber) {
75 invariant(isFiberMountedImpl(fiber) === MOUNTED, 'Unable to find node on an unmounted component.');
76}
77
78function findCurrentFiberUsingSlowPath(fiber) {
79 var alternate = fiber.alternate;
80 if (!alternate) {
81 var state = isFiberMountedImpl(fiber);
82 invariant(state !== UNMOUNTED, 'Unable to find node on an unmounted component.');
83 if (state === MOUNTING) {
84 return null;
85 }
86 return fiber;
87 }
88
89 var a = fiber;
90 var b = alternate;
91 while (true) {
92 var parentA = a.return;
93 var parentB = parentA ? parentA.alternate : null;
94 if (!parentA || !parentB) {
95 break;
96 }
97
98 if (parentA.child === parentB.child) {
99 var child = parentA.child;
100 while (child) {
101 if (child === a) {
102 assertIsMounted(parentA);
103 return fiber;
104 }
105 if (child === b) {
106 assertIsMounted(parentA);
107 return alternate;
108 }
109 child = child.sibling;
110 }
111
112 invariant(false, 'Unable to find node on an unmounted component.');
113 }
114
115 if (a.return !== b.return) {
116 a = parentA;
117 b = parentB;
118 } else {
119 var didFindChild = false;
120 var _child = parentA.child;
121 while (_child) {
122 if (_child === a) {
123 didFindChild = true;
124 a = parentA;
125 b = parentB;
126 break;
127 }
128 if (_child === b) {
129 didFindChild = true;
130 b = parentA;
131 a = parentB;
132 break;
133 }
134 _child = _child.sibling;
135 }
136 if (!didFindChild) {
137 _child = parentB.child;
138 while (_child) {
139 if (_child === a) {
140 didFindChild = true;
141 a = parentB;
142 b = parentA;
143 break;
144 }
145 if (_child === b) {
146 didFindChild = true;
147 b = parentB;
148 a = parentA;
149 break;
150 }
151 _child = _child.sibling;
152 }
153 invariant(didFindChild, 'Child was not found in either parent set. This indicates a bug ' + 'related to the return pointer.');
154 }
155 }
156
157 invariant(a.alternate === b, "Return fibers should always be each others' alternates.");
158 }
159
160 invariant(a.tag === HostRoot, 'Unable to find node on an unmounted component.');
161 if (a.stateNode.current === a) {
162 return fiber;
163 }
164
165 return alternate;
166}
167exports.findCurrentFiberUsingSlowPath = findCurrentFiberUsingSlowPath;
168
169exports.findCurrentHostFiber = function (parent) {
170 var currentParent = findCurrentFiberUsingSlowPath(parent);
171 if (!currentParent) {
172 return null;
173 }
174
175 var node = currentParent;
176 while (true) {
177 if (node.tag === HostComponent || node.tag === HostText) {
178 return node;
179 } else if (node.child) {
180 node.child.return = node;
181 node = node.child;
182 continue;
183 }
184 if (node === currentParent) {
185 return null;
186 }
187 while (!node.sibling) {
188 if (!node.return || node.return === currentParent) {
189 return null;
190 }
191 node = node.return;
192 }
193 node.sibling.return = node.return;
194 node = node.sibling;
195 }
196
197 return null;
198};
'use strict';
var ReactInstanceMap = require('ReactInstanceMap');
var ReactCurrentOwner = require('react/lib/ReactCurrentOwner');
var getComponentName = require('getComponentName');
var invariant = require('fbjs/lib/invariant');
if (__DEV__) {
var warning = require('fbjs/lib/warning');
}
var _require = require('ReactTypeOfWork'),
HostRoot = _require.HostRoot,
HostComponent = _require.HostComponent,
HostText = _require.HostText,
ClassComponent = _require.ClassComponent;
var _require2 = require('ReactTypeOfSideEffect'),
NoEffect = _require2.NoEffect,
Placement = _require2.Placement;
var MOUNTING = 1;
var MOUNTED = 2;
var UNMOUNTED = 3;
function isFiberMountedImpl(fiber) {
var node = fiber;
if (!fiber.alternate) {
if ((node.effectTag & Placement) !== NoEffect) {
return MOUNTING;
}
while (node.return) {
node = node.return;
if ((node.effectTag & Placement) !== NoEffect) {
return MOUNTING;
}
}
} else {
while (node.return) {
node = node.return;
}
}
if (node.tag === HostRoot) {
return MOUNTED;
}
return UNMOUNTED;
}
exports.isFiberMounted = function (fiber) {
return isFiberMountedImpl(fiber) === MOUNTED;
};
exports.isMounted = function (component) {
if (__DEV__) {
var owner = ReactCurrentOwner.current;
if (owner !== null && owner.tag === ClassComponent) {
var ownerFiber = owner;
var instance = ownerFiber.stateNode;
warning(instance._warnedAboutRefsInRender, '%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(ownerFiber) || 'A component');
instance._warnedAboutRefsInRender = true;
}
}
var fiber = ReactInstanceMap.get(component);
if (!fiber) {
return false;
}
return isFiberMountedImpl(fiber) === MOUNTED;
};
function assertIsMounted(fiber) {
invariant(isFiberMountedImpl(fiber) === MOUNTED, 'Unable to find node on an unmounted component.');
}
function findCurrentFiberUsingSlowPath(fiber) {
var alternate = fiber.alternate;
if (!alternate) {
var state = isFiberMountedImpl(fiber);
invariant(state !== UNMOUNTED, 'Unable to find node on an unmounted component.');
if (state === MOUNTING) {
return null;
}
return fiber;
}
var a = fiber;
var b = alternate;
while (true) {
var parentA = a.return;
var parentB = parentA ? parentA.alternate : null;
if (!parentA || !parentB) {
break;
}
if (parentA.child === parentB.child) {
var child = parentA.child;
while (child) {
if (child === a) {
assertIsMounted(parentA);
return fiber;
}
if (child === b) {
assertIsMounted(parentA);
return alternate;
}
child = child.sibling;
}
invariant(false, 'Unable to find node on an unmounted component.');
}
if (a.return !== b.return) {
a = parentA;
b = parentB;
} else {
var didFindChild = false;
var _child = parentA.child;
while (_child) {
if (_child === a) {
didFindChild = true;
a = parentA;
b = parentB;
break;
}
if (_child === b) {
didFindChild = true;
b = parentA;
a = parentB;
break;
}
_child = _child.sibling;
}
if (!didFindChild) {
_child = parentB.child;
while (_child) {
if (_child === a) {
didFindChild = true;
a = parentB;
b = parentA;
break;
}
if (_child === b) {
didFindChild = true;
b = parentB;
a = parentA;
break;
}
_child = _child.sibling;
}
invariant(didFindChild, 'Child was not found in either parent set. This indicates a bug ' + 'related to the return pointer.');
}
}
invariant(a.alternate === b, "Return fibers should always be each others' alternates.");
}
invariant(a.tag === HostRoot, 'Unable to find node on an unmounted component.');
if (a.stateNode.current === a) {
return fiber;
}
return alternate;
}
exports.findCurrentFiberUsingSlowPath = findCurrentFiberUsingSlowPath;
exports.findCurrentHostFiber = function (parent) {
var currentParent = findCurrentFiberUsingSlowPath(parent);
if (!currentParent) {
return null;
}
var node = currentParent;
while (true) {
if (node.tag === HostComponent || node.tag === HostText) {
return node;
} else if (node.child) {
node.child.return = node;
node = node.child;
continue;
}
if (node === currentParent) {
return null;
}
while (!node.sibling) {
if (!node.return || node.return === currentParent) {
return null;
}
node = node.return;
}
node.sibling.return = node.return;
node = node.sibling;
}
return null;
};
56b9ba28ab0f2ab110b5e0048c01753f13c0aaReactFiberTreeReflection.js
Source: 56b9ba28ab0f2ab110b5e0048c01753f13c0aaReactFiberTreeReflection.js
1
2
3'use strict';
4
5var ReactInstanceMap = require('ReactInstanceMap');
6var ReactCurrentOwner = require('react/lib/ReactCurrentOwner');
7
8var getComponentName = require('getComponentName');
9var invariant = require('fbjs/lib/invariant');
10
11if (__DEV__) {
12 var warning = require('fbjs/lib/warning');
13}
14
15var _require = require('ReactTypeOfWork'),
16 HostRoot = _require.HostRoot,
17 HostComponent = _require.HostComponent,
18 HostText = _require.HostText,
19 ClassComponent = _require.ClassComponent;
20
21var _require2 = require('ReactTypeOfSideEffect'),
22 NoEffect = _require2.NoEffect,
23 Placement = _require2.Placement;
24
25var MOUNTING = 1;
26var MOUNTED = 2;
27var UNMOUNTED = 3;
28
29function isFiberMountedImpl(fiber) {
30 var node = fiber;
31 if (!fiber.alternate) {
32 if ((node.effectTag & Placement) !== NoEffect) {
33 return MOUNTING;
34 }
35 while (node.return) {
36 node = node.return;
37 if ((node.effectTag & Placement) !== NoEffect) {
38 return MOUNTING;
39 }
40 }
41 } else {
42 while (node.return) {
43 node = node.return;
44 }
45 }
46 if (node.tag === HostRoot) {
47 return MOUNTED;
48 }
49
50 return UNMOUNTED;
51}
52exports.isFiberMounted = function (fiber) {
53 return isFiberMountedImpl(fiber) === MOUNTED;
54};
55
56exports.isMounted = function (component) {
57 if (__DEV__) {
58 var owner = ReactCurrentOwner.current;
59 if (owner !== null && owner.tag === ClassComponent) {
60 var ownerFiber = owner;
61 var instance = ownerFiber.stateNode;
62 warning(instance._warnedAboutRefsInRender, '%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(ownerFiber) || 'A component');
63 instance._warnedAboutRefsInRender = true;
64 }
65 }
66
67 var fiber = ReactInstanceMap.get(component);
68 if (!fiber) {
69 return false;
70 }
71 return isFiberMountedImpl(fiber) === MOUNTED;
72};
73
74function assertIsMounted(fiber) {
75 invariant(isFiberMountedImpl(fiber) === MOUNTED, 'Unable to find node on an unmounted component.');
76}
77
78function findCurrentFiberUsingSlowPath(fiber) {
79 var alternate = fiber.alternate;
80 if (!alternate) {
81 var state = isFiberMountedImpl(fiber);
82 invariant(state !== UNMOUNTED, 'Unable to find node on an unmounted component.');
83 if (state === MOUNTING) {
84 return null;
85 }
86 return fiber;
87 }
88
89 var a = fiber;
90 var b = alternate;
91 while (true) {
92 var parentA = a.return;
93 var parentB = parentA ? parentA.alternate : null;
94 if (!parentA || !parentB) {
95 break;
96 }
97
98 if (parentA.child === parentB.child) {
99 var child = parentA.child;
100 while (child) {
101 if (child === a) {
102 assertIsMounted(parentA);
103 return fiber;
104 }
105 if (child === b) {
106 assertIsMounted(parentA);
107 return alternate;
108 }
109 child = child.sibling;
110 }
111
112 invariant(false, 'Unable to find node on an unmounted component.');
113 }
114
115 if (a.return !== b.return) {
116 a = parentA;
117 b = parentB;
118 } else {
119 var didFindChild = false;
120 var _child = parentA.child;
121 while (_child) {
122 if (_child === a) {
123 didFindChild = true;
124 a = parentA;
125 b = parentB;
126 break;
127 }
128 if (_child === b) {
129 didFindChild = true;
130 b = parentA;
131 a = parentB;
132 break;
133 }
134 _child = _child.sibling;
135 }
136 if (!didFindChild) {
137 _child = parentB.child;
138 while (_child) {
139 if (_child === a) {
140 didFindChild = true;
141 a = parentB;
142 b = parentA;
143 break;
144 }
145 if (_child === b) {
146 didFindChild = true;
147 b = parentB;
148 a = parentA;
149 break;
150 }
151 _child = _child.sibling;
152 }
153 invariant(didFindChild, 'Child was not found in either parent set. This indicates a bug ' + 'related to the return pointer.');
154 }
155 }
156
157 invariant(a.alternate === b, "Return fibers should always be each others' alternates.");
158 }
159
160 invariant(a.tag === HostRoot, 'Unable to find node on an unmounted component.');
161 if (a.stateNode.current === a) {
162 return fiber;
163 }
164
165 return alternate;
166}
167exports.findCurrentFiberUsingSlowPath = findCurrentFiberUsingSlowPath;
168
169exports.findCurrentHostFiber = function (parent) {
170 var currentParent = findCurrentFiberUsingSlowPath(parent);
171 if (!currentParent) {
172 return null;
173 }
174
175 var node = currentParent;
176 while (true) {
177 if (node.tag === HostComponent || node.tag === HostText) {
178 return node;
179 } else if (node.child) {
180 node.child.return = node;
181 node = node.child;
182 continue;
183 }
184 if (node === currentParent) {
185 return null;
186 }
187 while (!node.sibling) {
188 if (!node.return || node.return === currentParent) {
189 return null;
190 }
191 node = node.return;
192 }
193 node.sibling.return = node.return;
194 node = node.sibling;
195 }
196
197 return null;
198};
'use strict';
var ReactInstanceMap = require('ReactInstanceMap');
var ReactCurrentOwner = require('react/lib/ReactCurrentOwner');
var getComponentName = require('getComponentName');
var invariant = require('fbjs/lib/invariant');
if (__DEV__) {
var warning = require('fbjs/lib/warning');
}
var _require = require('ReactTypeOfWork'),
HostRoot = _require.HostRoot,
HostComponent = _require.HostComponent,
HostText = _require.HostText,
ClassComponent = _require.ClassComponent;
var _require2 = require('ReactTypeOfSideEffect'),
NoEffect = _require2.NoEffect,
Placement = _require2.Placement;
var MOUNTING = 1;
var MOUNTED = 2;
var UNMOUNTED = 3;
function isFiberMountedImpl(fiber) {
var node = fiber;
if (!fiber.alternate) {
if ((node.effectTag & Placement) !== NoEffect) {
return MOUNTING;
}
while (node.return) {
node = node.return;
if ((node.effectTag & Placement) !== NoEffect) {
return MOUNTING;
}
}
} else {
while (node.return) {
node = node.return;
}
}
if (node.tag === HostRoot) {
return MOUNTED;
}
return UNMOUNTED;
}
exports.isFiberMounted = function (fiber) {
return isFiberMountedImpl(fiber) === MOUNTED;
};
exports.isMounted = function (component) {
if (__DEV__) {
var owner = ReactCurrentOwner.current;
if (owner !== null && owner.tag === ClassComponent) {
var ownerFiber = owner;
var instance = ownerFiber.stateNode;
warning(instance._warnedAboutRefsInRender, '%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(ownerFiber) || 'A component');
instance._warnedAboutRefsInRender = true;
}
}
var fiber = ReactInstanceMap.get(component);
if (!fiber) {
return false;
}
return isFiberMountedImpl(fiber) === MOUNTED;
};
function assertIsMounted(fiber) {
invariant(isFiberMountedImpl(fiber) === MOUNTED, 'Unable to find node on an unmounted component.');
}
function findCurrentFiberUsingSlowPath(fiber) {
var alternate = fiber.alternate;
if (!alternate) {
var state = isFiberMountedImpl(fiber);
invariant(state !== UNMOUNTED, 'Unable to find node on an unmounted component.');
if (state === MOUNTING) {
return null;
}
return fiber;
}
var a = fiber;
var b = alternate;
while (true) {
var parentA = a.return;
var parentB = parentA ? parentA.alternate : null;
if (!parentA || !parentB) {
break;
}
if (parentA.child === parentB.child) {
var child = parentA.child;
while (child) {
if (child === a) {
assertIsMounted(parentA);
return fiber;
}
if (child === b) {
assertIsMounted(parentA);
return alternate;
}
child = child.sibling;
}
invariant(false, 'Unable to find node on an unmounted component.');
}
if (a.return !== b.return) {
a = parentA;
b = parentB;
} else {
var didFindChild = false;
var _child = parentA.child;
while (_child) {
if (_child === a) {
didFindChild = true;
a = parentA;
b = parentB;
break;
}
if (_child === b) {
didFindChild = true;
b = parentA;
a = parentB;
break;
}
_child = _child.sibling;
}
if (!didFindChild) {
_child = parentB.child;
while (_child) {
if (_child === a) {
didFindChild = true;
a = parentB;
b = parentA;
break;
}
if (_child === b) {
didFindChild = true;
b = parentB;
a = parentA;
break;
}
_child = _child.sibling;
}
invariant(didFindChild, 'Child was not found in either parent set. This indicates a bug ' + 'related to the return pointer.');
}
}
invariant(a.alternate === b, "Return fibers should always be each others' alternates.");
}
invariant(a.tag === HostRoot, 'Unable to find node on an unmounted component.');
if (a.stateNode.current === a) {
return fiber;
}
return alternate;
}
exports.findCurrentFiberUsingSlowPath = findCurrentFiberUsingSlowPath;
exports.findCurrentHostFiber = function (parent) {
var currentParent = findCurrentFiberUsingSlowPath(parent);
if (!currentParent) {
return null;
}
var node = currentParent;
while (true) {
if (node.tag === HostComponent || node.tag === HostText) {
return node;
} else if (node.child) {
node.child.return = node;
node = node.child;
continue;
}
if (node === currentParent) {
return null;
}
while (!node.sibling) {
if (!node.return || node.return === currentParent) {
return null;
}
node = node.return;
}
node.sibling.return = node.return;
node = node.sibling;
}
return null;
};
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