[6a3a178] | 1 | "use strict";
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| 2 |
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| 3 | var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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| 4 |
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| 5 | var _assert = _interopRequireDefault(require("assert"));
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| 6 |
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| 7 | var _emit = require("./emit");
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| 8 |
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| 9 | var _util = require("util");
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| 10 |
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| 11 | var _util2 = require("./util");
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| 12 |
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| 13 | /**
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| 14 | * Copyright (c) 2014-present, Facebook, Inc.
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| 15 | *
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| 16 | * This source code is licensed under the MIT license found in the
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| 17 | * LICENSE file in the root directory of this source tree.
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| 18 | */
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| 19 | function Entry() {
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| 20 | _assert["default"].ok(this instanceof Entry);
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| 21 | }
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| 22 |
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| 23 | function FunctionEntry(returnLoc) {
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| 24 | Entry.call(this);
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| 25 | (0, _util2.getTypes)().assertLiteral(returnLoc);
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| 26 | this.returnLoc = returnLoc;
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| 27 | }
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| 28 |
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| 29 | (0, _util.inherits)(FunctionEntry, Entry);
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| 30 | exports.FunctionEntry = FunctionEntry;
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| 31 |
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| 32 | function LoopEntry(breakLoc, continueLoc, label) {
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| 33 | Entry.call(this);
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| 34 | var t = (0, _util2.getTypes)();
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| 35 | t.assertLiteral(breakLoc);
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| 36 | t.assertLiteral(continueLoc);
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| 37 |
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| 38 | if (label) {
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| 39 | t.assertIdentifier(label);
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| 40 | } else {
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| 41 | label = null;
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| 42 | }
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| 43 |
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| 44 | this.breakLoc = breakLoc;
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| 45 | this.continueLoc = continueLoc;
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| 46 | this.label = label;
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| 47 | }
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| 48 |
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| 49 | (0, _util.inherits)(LoopEntry, Entry);
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| 50 | exports.LoopEntry = LoopEntry;
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| 51 |
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| 52 | function SwitchEntry(breakLoc) {
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| 53 | Entry.call(this);
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| 54 | (0, _util2.getTypes)().assertLiteral(breakLoc);
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| 55 | this.breakLoc = breakLoc;
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| 56 | }
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| 57 |
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| 58 | (0, _util.inherits)(SwitchEntry, Entry);
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| 59 | exports.SwitchEntry = SwitchEntry;
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| 60 |
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| 61 | function TryEntry(firstLoc, catchEntry, finallyEntry) {
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| 62 | Entry.call(this);
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| 63 | var t = (0, _util2.getTypes)();
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| 64 | t.assertLiteral(firstLoc);
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| 65 |
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| 66 | if (catchEntry) {
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| 67 | _assert["default"].ok(catchEntry instanceof CatchEntry);
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| 68 | } else {
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| 69 | catchEntry = null;
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| 70 | }
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| 71 |
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| 72 | if (finallyEntry) {
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| 73 | _assert["default"].ok(finallyEntry instanceof FinallyEntry);
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| 74 | } else {
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| 75 | finallyEntry = null;
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| 76 | } // Have to have one or the other (or both).
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| 77 |
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| 78 |
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| 79 | _assert["default"].ok(catchEntry || finallyEntry);
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| 80 |
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| 81 | this.firstLoc = firstLoc;
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| 82 | this.catchEntry = catchEntry;
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| 83 | this.finallyEntry = finallyEntry;
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| 84 | }
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| 85 |
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| 86 | (0, _util.inherits)(TryEntry, Entry);
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| 87 | exports.TryEntry = TryEntry;
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| 88 |
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| 89 | function CatchEntry(firstLoc, paramId) {
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| 90 | Entry.call(this);
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| 91 | var t = (0, _util2.getTypes)();
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| 92 | t.assertLiteral(firstLoc);
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| 93 | t.assertIdentifier(paramId);
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| 94 | this.firstLoc = firstLoc;
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| 95 | this.paramId = paramId;
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| 96 | }
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| 97 |
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| 98 | (0, _util.inherits)(CatchEntry, Entry);
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| 99 | exports.CatchEntry = CatchEntry;
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| 100 |
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| 101 | function FinallyEntry(firstLoc, afterLoc) {
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| 102 | Entry.call(this);
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| 103 | var t = (0, _util2.getTypes)();
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| 104 | t.assertLiteral(firstLoc);
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| 105 | t.assertLiteral(afterLoc);
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| 106 | this.firstLoc = firstLoc;
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| 107 | this.afterLoc = afterLoc;
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| 108 | }
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| 109 |
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| 110 | (0, _util.inherits)(FinallyEntry, Entry);
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| 111 | exports.FinallyEntry = FinallyEntry;
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| 112 |
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| 113 | function LabeledEntry(breakLoc, label) {
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| 114 | Entry.call(this);
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| 115 | var t = (0, _util2.getTypes)();
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| 116 | t.assertLiteral(breakLoc);
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| 117 | t.assertIdentifier(label);
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| 118 | this.breakLoc = breakLoc;
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| 119 | this.label = label;
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| 120 | }
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| 121 |
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| 122 | (0, _util.inherits)(LabeledEntry, Entry);
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| 123 | exports.LabeledEntry = LabeledEntry;
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| 124 |
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| 125 | function LeapManager(emitter) {
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| 126 | _assert["default"].ok(this instanceof LeapManager);
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| 127 |
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| 128 | _assert["default"].ok(emitter instanceof _emit.Emitter);
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| 129 |
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| 130 | this.emitter = emitter;
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| 131 | this.entryStack = [new FunctionEntry(emitter.finalLoc)];
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| 132 | }
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| 133 |
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| 134 | var LMp = LeapManager.prototype;
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| 135 | exports.LeapManager = LeapManager;
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| 136 |
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| 137 | LMp.withEntry = function (entry, callback) {
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| 138 | _assert["default"].ok(entry instanceof Entry);
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| 139 |
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| 140 | this.entryStack.push(entry);
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| 141 |
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| 142 | try {
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| 143 | callback.call(this.emitter);
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| 144 | } finally {
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| 145 | var popped = this.entryStack.pop();
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| 146 |
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| 147 | _assert["default"].strictEqual(popped, entry);
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| 148 | }
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| 149 | };
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| 150 |
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| 151 | LMp._findLeapLocation = function (property, label) {
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| 152 | for (var i = this.entryStack.length - 1; i >= 0; --i) {
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| 153 | var entry = this.entryStack[i];
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| 154 | var loc = entry[property];
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| 155 |
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| 156 | if (loc) {
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| 157 | if (label) {
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| 158 | if (entry.label && entry.label.name === label.name) {
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| 159 | return loc;
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| 160 | }
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| 161 | } else if (entry instanceof LabeledEntry) {// Ignore LabeledEntry entries unless we are actually breaking to
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| 162 | // a label.
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| 163 | } else {
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| 164 | return loc;
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| 165 | }
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| 166 | }
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| 167 | }
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| 168 |
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| 169 | return null;
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| 170 | };
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| 171 |
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| 172 | LMp.getBreakLoc = function (label) {
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| 173 | return this._findLeapLocation("breakLoc", label);
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| 174 | };
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| 175 |
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| 176 | LMp.getContinueLoc = function (label) {
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| 177 | return this._findLeapLocation("continueLoc", label);
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| 178 | }; |
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