143 lines
4.0 KiB
JavaScript
143 lines
4.0 KiB
JavaScript
"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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var _assert = _interopRequireDefault(require("assert"));
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var _emit = require("./emit");
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var _util = require("util");
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var _util2 = require("./util");
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/**
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* Copyright (c) 2014-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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function Entry() {
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_assert["default"].ok(this instanceof Entry);
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}
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function FunctionEntry(returnLoc) {
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Entry.call(this);
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(0, _util2.getTypes)().assertLiteral(returnLoc);
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this.returnLoc = returnLoc;
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}
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(0, _util.inherits)(FunctionEntry, Entry);
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exports.FunctionEntry = FunctionEntry;
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function LoopEntry(breakLoc, continueLoc, label) {
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Entry.call(this);
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var t = (0, _util2.getTypes)();
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t.assertLiteral(breakLoc);
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t.assertLiteral(continueLoc);
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if (label) {
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t.assertIdentifier(label);
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} else {
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label = null;
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}
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this.breakLoc = breakLoc;
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this.continueLoc = continueLoc;
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this.label = label;
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}
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(0, _util.inherits)(LoopEntry, Entry);
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exports.LoopEntry = LoopEntry;
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function SwitchEntry(breakLoc) {
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Entry.call(this);
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(0, _util2.getTypes)().assertLiteral(breakLoc);
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this.breakLoc = breakLoc;
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}
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(0, _util.inherits)(SwitchEntry, Entry);
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exports.SwitchEntry = SwitchEntry;
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function TryEntry(firstLoc, catchEntry, finallyEntry) {
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Entry.call(this);
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var t = (0, _util2.getTypes)();
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t.assertLiteral(firstLoc);
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if (catchEntry) {
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_assert["default"].ok(catchEntry instanceof CatchEntry);
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} else {
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catchEntry = null;
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}
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if (finallyEntry) {
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_assert["default"].ok(finallyEntry instanceof FinallyEntry);
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} else {
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finallyEntry = null;
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}
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// Have to have one or the other (or both).
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_assert["default"].ok(catchEntry || finallyEntry);
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this.firstLoc = firstLoc;
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this.catchEntry = catchEntry;
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this.finallyEntry = finallyEntry;
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}
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(0, _util.inherits)(TryEntry, Entry);
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exports.TryEntry = TryEntry;
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function CatchEntry(firstLoc, paramId) {
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Entry.call(this);
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var t = (0, _util2.getTypes)();
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t.assertLiteral(firstLoc);
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t.assertIdentifier(paramId);
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this.firstLoc = firstLoc;
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this.paramId = paramId;
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}
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(0, _util.inherits)(CatchEntry, Entry);
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exports.CatchEntry = CatchEntry;
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function FinallyEntry(firstLoc, afterLoc) {
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Entry.call(this);
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var t = (0, _util2.getTypes)();
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t.assertLiteral(firstLoc);
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t.assertLiteral(afterLoc);
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this.firstLoc = firstLoc;
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this.afterLoc = afterLoc;
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}
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(0, _util.inherits)(FinallyEntry, Entry);
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exports.FinallyEntry = FinallyEntry;
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function LabeledEntry(breakLoc, label) {
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Entry.call(this);
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var t = (0, _util2.getTypes)();
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t.assertLiteral(breakLoc);
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t.assertIdentifier(label);
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this.breakLoc = breakLoc;
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this.label = label;
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}
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(0, _util.inherits)(LabeledEntry, Entry);
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exports.LabeledEntry = LabeledEntry;
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function LeapManager(emitter) {
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_assert["default"].ok(this instanceof LeapManager);
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_assert["default"].ok(emitter instanceof _emit.Emitter);
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this.emitter = emitter;
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this.entryStack = [new FunctionEntry(emitter.finalLoc)];
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}
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var LMp = LeapManager.prototype;
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exports.LeapManager = LeapManager;
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LMp.withEntry = function (entry, callback) {
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_assert["default"].ok(entry instanceof Entry);
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this.entryStack.push(entry);
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try {
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callback.call(this.emitter);
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} finally {
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var popped = this.entryStack.pop();
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_assert["default"].strictEqual(popped, entry);
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}
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};
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LMp._findLeapLocation = function (property, label) {
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for (var i = this.entryStack.length - 1; i >= 0; --i) {
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var entry = this.entryStack[i];
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var loc = entry[property];
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if (loc) {
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if (label) {
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if (entry.label && entry.label.name === label.name) {
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return loc;
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}
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} else if (entry instanceof LabeledEntry) {
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// Ignore LabeledEntry entries unless we are actually breaking to
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// a label.
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} else {
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return loc;
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}
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}
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}
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return null;
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};
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LMp.getBreakLoc = function (label) {
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return this._findLeapLocation("breakLoc", label);
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};
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LMp.getContinueLoc = function (label) {
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return this._findLeapLocation("continueLoc", label);
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}; |