diff options
Diffstat (limited to 'node_modules/babel-traverse/lib/scope/binding.js')
-rw-r--r-- | node_modules/babel-traverse/lib/scope/binding.js | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/node_modules/babel-traverse/lib/scope/binding.js b/node_modules/babel-traverse/lib/scope/binding.js new file mode 100644 index 000000000..b1acf1b10 --- /dev/null +++ b/node_modules/babel-traverse/lib/scope/binding.js @@ -0,0 +1,82 @@ +"use strict"; + +exports.__esModule = true; + +var _classCallCheck2 = require("babel-runtime/helpers/classCallCheck"); + +var _classCallCheck3 = _interopRequireDefault(_classCallCheck2); + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +var Binding = function () { + function Binding(_ref) { + var existing = _ref.existing; + var identifier = _ref.identifier; + var scope = _ref.scope; + var path = _ref.path; + var kind = _ref.kind; + (0, _classCallCheck3.default)(this, Binding); + + 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(); + + if (existing) { + this.constantViolations = [].concat(existing.path, existing.constantViolations, this.constantViolations); + } + } + + Binding.prototype.deoptValue = function deoptValue() { + this.clearValue(); + this.hasDeoptedValue = true; + }; + + Binding.prototype.setValue = function setValue(value) { + if (this.hasDeoptedValue) return; + this.hasValue = true; + this.value = value; + }; + + Binding.prototype.clearValue = function clearValue() { + this.hasDeoptedValue = false; + this.hasValue = false; + this.value = null; + }; + + Binding.prototype.reassign = function reassign(path) { + this.constant = false; + if (this.constantViolations.indexOf(path) !== -1) { + return; + } + this.constantViolations.push(path); + }; + + Binding.prototype.reference = function reference(path) { + if (this.referencePaths.indexOf(path) !== -1) { + return; + } + this.referenced = true; + this.references++; + this.referencePaths.push(path); + }; + + Binding.prototype.dereference = function dereference() { + this.references--; + this.referenced = !!this.references; + }; + + return Binding; +}(); + +exports.default = Binding; +module.exports = exports["default"];
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