binding.js
1.52 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var Binding = function () {
function Binding(_ref) {
var identifier = _ref.identifier,
scope = _ref.scope,
path = _ref.path,
kind = _ref.kind;
this.identifier = identifier;
this.scope = scope;
this.path = path;
this.kind = kind;
this.constantViolations = [];
this.constant = true;
this.referencePaths = [];
this.referenced = false;
this.references = 0;
this.clearValue();
}
var _proto = Binding.prototype;
_proto.deoptValue = function deoptValue() {
this.clearValue();
this.hasDeoptedValue = true;
};
_proto.setValue = function setValue(value) {
if (this.hasDeoptedValue) return;
this.hasValue = true;
this.value = value;
};
_proto.clearValue = function clearValue() {
this.hasDeoptedValue = false;
this.hasValue = false;
this.value = null;
};
_proto.reassign = function reassign(path) {
this.constant = false;
if (this.constantViolations.indexOf(path) !== -1) {
return;
}
this.constantViolations.push(path);
};
_proto.reference = function reference(path) {
if (this.referencePaths.indexOf(path) !== -1) {
return;
}
this.referenced = true;
this.references++;
this.referencePaths.push(path);
};
_proto.dereference = function dereference() {
this.references--;
this.referenced = !!this.references;
};
return Binding;
}();
exports.default = Binding;