first commit

build/node_modules/prepack/lib/debugger/server/Stepper.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.StepOverStepper = exports.StepIntoStepper = exports.Stepper = undefined;
+
+var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * Copyright (c) 2017-present, Facebook, Inc.
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * All rights reserved.
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      *
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * This source code is licensed under the BSD-style license found in the
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * LICENSE file in the root directory of this source tree. An additional grant
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      * of patent rights can be found in the PATENTS file in the same directory.
+                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      */
+
+var _is = require("./../../methods/is.js");
+
+var _babelTypes = require("babel-types");
+
+var _invariant = require("./../common/invariant.js");
+
+var _invariant2 = _interopRequireDefault(_invariant);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var Stepper = exports.Stepper = function () {
+  function Stepper(filePath, line, column) {
+    _classCallCheck(this, Stepper);
+
+    this._stepStartData = {
+      filePath: filePath,
+      line: line,
+      column: column
+    };
+  }
+
+  _createClass(Stepper, [{
+    key: "isComplete",
+    value: function isComplete(ast, currentStackSize) {
+      (0, _invariant2.default)(false, "Abstract method, please override");
+    }
+  }, {
+    key: "isAstLocationChanged",
+    value: function isAstLocationChanged(ast) {
+      // we should only step to statements
+      if (!(0, _is.IsStatement)(ast)) return false;
+      var loc = ast.loc;
+      if (!loc) return false;
+      var filePath = loc.source;
+      var line = loc.start.line;
+      var column = loc.start.column;
+      if (!filePath) return false;
+      if (this._stepStartData) {
+        if (filePath === this._stepStartData.filePath && line === this._stepStartData.line && column === this._stepStartData.column) {
+          return false;
+        }
+      } else {
+        return false;
+      }
+      return true;
+    }
+  }]);
+
+  return Stepper;
+}();
+
+var StepIntoStepper = exports.StepIntoStepper = function (_Stepper) {
+  _inherits(StepIntoStepper, _Stepper);
+
+  function StepIntoStepper(filePath, line, column) {
+    _classCallCheck(this, StepIntoStepper);
+
+    return _possibleConstructorReturn(this, (StepIntoStepper.__proto__ || Object.getPrototypeOf(StepIntoStepper)).call(this, filePath, line, column));
+  }
+
+  // Override
+
+
+  _createClass(StepIntoStepper, [{
+    key: "isComplete",
+    value: function isComplete(ast, currentStackSize) {
+      return this.isAstLocationChanged(ast);
+    }
+  }]);
+
+  return StepIntoStepper;
+}(Stepper);
+
+var StepOverStepper = exports.StepOverStepper = function (_Stepper2) {
+  _inherits(StepOverStepper, _Stepper2);
+
+  function StepOverStepper(filePath, line, column, stackSize) {
+    _classCallCheck(this, StepOverStepper);
+
+    var _this2 = _possibleConstructorReturn(this, (StepOverStepper.__proto__ || Object.getPrototypeOf(StepOverStepper)).call(this, filePath, line, column));
+
+    _this2._startStackSize = stackSize;
+    return _this2;
+  }
+
+  _createClass(StepOverStepper, [{
+    key: "isComplete",
+    value: function isComplete(ast, currentStackSize) {
+      if (!this.isAstLocationChanged(ast)) return false;
+      if (currentStackSize <= this._startStackSize) {
+        // two cases here:
+        // if current stack length < starting stack length, the program must have
+        // hit an exception so this stepper is no longer relevant
+        // if current stack length === starting stack length, the program returned
+        // to the same stack depth, so a step over is complete
+        return true;
+      }
+      return false;
+    }
+  }]);
+
+  return StepOverStepper;
+}(Stepper);
+//# sourceMappingURL=Stepper.js.map