Code coverage report for debug\generators.js

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
 
8
 
 
 
8
8
8
8
8
8
8
 
8
8
18
18
18
18
1
1
1
1
 
17
17
 
2
 
 
8
41
41
41
41
41
41
41
 
 
 
 
8
41
 
 
8
1
1
 
1
 
 
8
89
11
 
 
78
78
30
 
48
48
8
 
 
 
8
 
8
2
 
 
 
 
 
 
2
 
 
46
 
 
 
 
 
 
 
 
 
8
10
10
10
 
10
10
 
 
8
79
79
79
79
 
 
8
40
2
 
38
38
38
38
40
40
 
40
40
40
 
 
 
8
5
4
 
 
8
2
1
 
1
1
1
1
 
 
 
 
 
(function () { "use strict";
module.exports = function(Promise,
                          apiRejection,
                          INTERNAL,
                          tryConvertToPromise) {
var errors = require("./errors.js");
var TypeError = errors.TypeError;
var ASSERT = require("./assert.js");
var util = require("./util.js");
var errorObj = util.errorObj;
var tryCatch = util.tryCatch;
var yieldHandlers = [];
 
function promiseFromYieldHandler(value, yieldHandlers, traceParent) {
    for (var i = 0; i < yieldHandlers.length; ++i) {
        traceParent._pushContext();
        var result = tryCatch(yieldHandlers[i])(value);
        traceParent._popContext();
        if (result === errorObj) {
            traceParent._pushContext();
            var ret = Promise.reject(errorObj.e);
            traceParent._popContext();
            return ret;
        }
        var maybePromise = tryConvertToPromise(result, traceParent);
        if (maybePromise instanceof Promise) return maybePromise;
    }
    return null;
}
 
function PromiseSpawn(generatorFunction, receiver, yieldHandler, stack) {
    var promise = this._promise = new Promise(INTERNAL);
    promise._captureStackTrace();
    this._stack = stack;
    this._generatorFunction = generatorFunction;
    this._receiver = receiver;
    this._generator = undefined;
    this._yieldHandlers = typeof yieldHandler === "function"
        ? [yieldHandler].concat(yieldHandlers)
        : yieldHandlers;
}
 
PromiseSpawn.prototype.promise = function () {
    return this._promise;
};
 
PromiseSpawn.prototype._run = function () {
    this._generator = this._generatorFunction.call(this._receiver);
    this._receiver =
        this._generatorFunction = undefined;
    this._next(undefined);
};
 
PromiseSpawn.prototype._continue = function (result) {
    if (result === errorObj) {
        return this._promise._rejectCallback(result.e, false, true);
    }
 
    var value = result.value;
    if (result.done === true) {
        this._promise._resolveCallback(value);
    } else {
        var maybePromise = tryConvertToPromise(value, this._promise);
        if (!(maybePromise instanceof Promise)) {
            maybePromise =
                promiseFromYieldHandler(maybePromise,
                                        this._yieldHandlers,
                                        this._promise);
            ASSERT(((maybePromise === null) || (maybePromise instanceof Promise)),
    "maybePromise === null || maybePromise instanceof Promise");
            if (maybePromise === null) {
                this._throw(
                    new TypeError(
                        "A value %s was yielded that could not be treated as a promise\u000a\u000a    See http://goo.gl/4Y4pDk\u000a\u000a".replace("%s", value) +
                        "From coroutine:\u000a" +
                        this._stack.split("\n").slice(1, -7).join("\n")
                    )
                );
                return;
            }
        }
        maybePromise._then(
            this._next,
            this._throw,
            undefined,
            this,
            null
       );
    }
};
 
PromiseSpawn.prototype._throw = function (reason) {
    this._promise._attachExtraTrace(reason);
    this._promise._pushContext();
    var result = tryCatch(this._generator["throw"])
        .call(this._generator, reason);
    this._promise._popContext();
    this._continue(result);
};
 
PromiseSpawn.prototype._next = function (value) {
    this._promise._pushContext();
    var result = tryCatch(this._generator.next).call(this._generator, value);
    this._promise._popContext();
    this._continue(result);
};
 
Promise.coroutine = function (generatorFunction, options) {
    if (typeof generatorFunction !== "function") {
        throw new TypeError("generatorFunction must be a function\u000a\u000a    See http://goo.gl/6Vqhm0\u000a");
    }
    var yieldHandler = Object(options).yieldHandler;
    var PromiseSpawn$ = PromiseSpawn;
    var stack = new Error().stack;
    return function () {
        var generator = generatorFunction.apply(this, arguments);
        var spawn = new PromiseSpawn$(undefined, undefined, yieldHandler,
                                      stack);
        spawn._generator = generator;
        spawn._next(undefined);
        return spawn.promise();
    };
};
 
Promise.coroutine.addYieldHandler = function(fn) {
    if (typeof fn !== "function") throw new TypeError("fn must be a function\u000a\u000a    See http://goo.gl/916lJJ\u000a");
    yieldHandlers.push(fn);
};
 
Promise.spawn = function (generatorFunction) {
    if (typeof generatorFunction !== "function") {
        return apiRejection("generatorFunction must be a function\u000a\u000a    See http://goo.gl/6Vqhm0\u000a");
    }
    var spawn = new PromiseSpawn(generatorFunction, this);
    var ret = spawn.promise();
    spawn._run(Promise.spawn);
    return ret;
};
};
 
}());