82 lines
2.0 KiB
JavaScript
82 lines
2.0 KiB
JavaScript
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"use strict";
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exports.__esModule = true;
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var _classCallCheck2 = require("babel-runtime/helpers/classCallCheck");
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var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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var Binding = function () {
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function Binding(_ref) {
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var existing = _ref.existing,
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identifier = _ref.identifier,
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scope = _ref.scope,
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path = _ref.path,
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kind = _ref.kind;
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(0, _classCallCheck3.default)(this, Binding);
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this.identifier = identifier;
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this.scope = scope;
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this.path = path;
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this.kind = kind;
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this.constantViolations = [];
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this.constant = true;
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this.referencePaths = [];
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this.referenced = false;
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this.references = 0;
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this.clearValue();
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if (existing) {
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this.constantViolations = [].concat(existing.path, existing.constantViolations, this.constantViolations);
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}
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}
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Binding.prototype.deoptValue = function deoptValue() {
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this.clearValue();
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this.hasDeoptedValue = true;
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};
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Binding.prototype.setValue = function setValue(value) {
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if (this.hasDeoptedValue) return;
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this.hasValue = true;
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this.value = value;
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};
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Binding.prototype.clearValue = function clearValue() {
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this.hasDeoptedValue = false;
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this.hasValue = false;
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this.value = null;
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};
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Binding.prototype.reassign = function reassign(path) {
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this.constant = false;
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if (this.constantViolations.indexOf(path) !== -1) {
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return;
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}
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this.constantViolations.push(path);
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};
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Binding.prototype.reference = function reference(path) {
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if (this.referencePaths.indexOf(path) !== -1) {
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return;
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}
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this.referenced = true;
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this.references++;
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this.referencePaths.push(path);
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};
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Binding.prototype.dereference = function dereference() {
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this.references--;
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this.referenced = !!this.references;
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};
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return Binding;
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}();
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exports.default = Binding;
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module.exports = exports["default"];
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