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
|
/**
* @ngdoc function
* @name angular.injector
* @function
*
* @description
* Creates an inject function that can be used for dependency injection.
* (See {@link guide.di dependency injection})
*
* The inject function can be used for retrieving service instances or for calling any function
* which has the $inject property so that the services can be automatically provided. Angular
* creates an injection function automatically for the root scope and it is available as
* {@link angular.scope.$service $service}.
*
* @param {Object=} [providerScope={}] provider's `this`
* @param {Object.<string, function()>=} [providers=angular.service] Map of provider (factory)
* function.
* @param {Object.<string, function()>=} [cache={}] Place where instances are saved for reuse. Can
* also be used to override services speciafied by `providers` (useful in tests).
* @returns
* {function()} Injector function: `function(value, scope, args...)`:
*
* * `value` - `{string|array|function}`
* * `scope(optional=rootScope)` - optional function "`this`" when `value` is type `function`.
* * `args(optional)` - optional set of arguments to pass to function after injection arguments.
* (also known as curry arguments or currying).
*
* #Return value of `function(value, scope, args...)`
* The injector function return value depended on the type of `value` argument:
*
* * `string`: return an instance for the injection key.
* * `array` of keys: returns an array of instances for those keys. (see `string` above.)
* * `function`: look at `$inject` property of function to determine instances to inject
* and then call the function with instances and `scope`. Any additional arguments
* (`args`) are appended to the function arguments.
* * `none`: initialize eager providers.
*
*/
function createInjector(providerScope, providers, cache) {
providers = providers || angularService;
cache = cache || {};
providerScope = providerScope || {};
return function inject(value, scope, args){
var returnValue, provider;
if (isString(value)) {
if (!(value in cache)) {
provider = providers[value];
if (!provider) throw "Unknown provider for '"+value+"'.";
cache[value] = inject(provider, providerScope);
}
returnValue = cache[value];
} else if (isArray(value)) {
returnValue = [];
forEach(value, function(name) {
returnValue.push(inject(name));
});
} else if (isFunction(value)) {
returnValue = inject(injectionArgs(value));
returnValue = value.apply(scope, concat(returnValue, arguments, 2));
} else if (isObject(value)) {
forEach(providers, function(provider, name){
if (provider.$eager)
inject(name);
if (provider.$creation)
throw new Error("Failed to register service '" + name +
"': $creation property is unsupported. Use $eager:true or see release notes.");
});
} else {
returnValue = inject(providerScope);
}
return returnValue;
};
}
function injectService(services, fn) {
return extend(fn, {$inject:services});;
}
function injectUpdateView(fn) {
return injectService(['$updateView'], fn);
}
function angularServiceInject(name, fn, inject, eager) {
angularService(name, fn, {$inject:inject, $eager:eager});
}
/**
* @returns the $inject property of function. If not found the
* the $inject is computed by looking at the toString of function and
* extracting all arguments which start with $ or end with _ as the
* injection names.
*/
var FN_ARGS = /^function\s*[^\(]*\(([^\)]*)\)/;
var FN_ARG_SPLIT = /,/;
var FN_ARG = /^\s*(((\$?).+?)(_?))\s*$/;
var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
function injectionArgs(fn) {
assertArgFn(fn);
if (!fn.$inject) {
var args = fn.$inject = [];
var fnText = fn.toString().replace(STRIP_COMMENTS, '');
var argDecl = fnText.match(FN_ARGS);
forEach(argDecl[1].split(FN_ARG_SPLIT), function(arg){
arg.replace(FN_ARG, function(all, name, injectName, $, _){
assertArg(args, name, 'after non-injectable arg');
if ($ || _)
args.push(injectName);
else
args = null; // once we reach an argument which is not injectable then ignore
});
});
}
return fn.$inject;
};
|
