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fbcount/Nodejs/node_modules/@babel/parser/lib/util/class-scope.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = exports.ClassScope = void 0;
+
+var _scopeflags = require("./scopeflags");
+
+class ClassScope {
+  constructor() {
+    this.privateNames = new Set();
+    this.loneAccessors = new Map();
+    this.undefinedPrivateNames = new Map();
+  }
+
+}
+
+exports.ClassScope = ClassScope;
+
+class ClassScopeHandler {
+  constructor(raise) {
+    this.stack = [];
+    this.undefinedPrivateNames = new Map();
+    this.raise = raise;
+  }
+
+  current() {
+    return this.stack[this.stack.length - 1];
+  }
+
+  enter() {
+    this.stack.push(new ClassScope());
+  }
+
+  exit() {
+    const oldClassScope = this.stack.pop();
+    const current = this.current();
+
+    for (let _i = 0, _Array$from = Array.from(oldClassScope.undefinedPrivateNames); _i < _Array$from.length; _i++) {
+      const [name, pos] = _Array$from[_i];
+
+      if (current) {
+        if (!current.undefinedPrivateNames.has(name)) {
+          current.undefinedPrivateNames.set(name, pos);
+        }
+      } else {
+        this.raiseUndeclaredPrivateName(name, pos);
+      }
+    }
+  }
+
+  declarePrivateName(name, elementType, pos) {
+    const classScope = this.current();
+    let redefined = classScope.privateNames.has(name);
+
+    if (elementType & _scopeflags.CLASS_ELEMENT_KIND_ACCESSOR) {
+      const accessor = redefined && classScope.loneAccessors.get(name);
+
+      if (accessor) {
+        const oldStatic = accessor & _scopeflags.CLASS_ELEMENT_FLAG_STATIC;
+        const newStatic = elementType & _scopeflags.CLASS_ELEMENT_FLAG_STATIC;
+        const oldKind = accessor & _scopeflags.CLASS_ELEMENT_KIND_ACCESSOR;
+        const newKind = elementType & _scopeflags.CLASS_ELEMENT_KIND_ACCESSOR;
+        redefined = oldKind === newKind || oldStatic !== newStatic;
+        if (!redefined) classScope.loneAccessors.delete(name);
+      } else if (!redefined) {
+        classScope.loneAccessors.set(name, elementType);
+      }
+    }
+
+    if (redefined) {
+      this.raise(pos, `Duplicate private name #${name}`);
+    }
+
+    classScope.privateNames.add(name);
+    classScope.undefinedPrivateNames.delete(name);
+  }
+
+  usePrivateName(name, pos) {
+    let classScope;
+
+    for (let _i2 = 0, _this$stack = this.stack; _i2 < _this$stack.length; _i2++) {
+      classScope = _this$stack[_i2];
+      if (classScope.privateNames.has(name)) return;
+    }
+
+    if (classScope) {
+      classScope.undefinedPrivateNames.set(name, pos);
+    } else {
+      this.raiseUndeclaredPrivateName(name, pos);
+    }
+  }
+
+  raiseUndeclaredPrivateName(name, pos) {
+    this.raise(pos, `Private name #${name} is not defined`);
+  }
+
+}
+
+exports.default = ClassScopeHandler;