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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
'use strict';
/**
* @ngdoc function
* @name angular.injector
* @function
*
* @description
* Creates an injector function that can be used for retrieving services as well as for
* dependency injection (see {@link guide/dev_guide.di dependency injection}).
*
* Creating an injector doesn't automatically create all of the `$eager`
* {@link angular.service services}. You have to call `injector.eager()` to initialize them.
*
* @param {Object.<string, function()>=} [factories=angular.service] Map of the service factory
* functions.
* @returns {function()} Injector function:
*
* * `injector(serviceName)`:
* * `serviceName` - `{string=}` - Name of the service to retrieve.
*
* The injector function also has these properties:
*
* * An `invoke` property which can be used to invoke methods with dependency-injected arguments.
* `injector.invoke(self, fn, locals)`
* * `self` - The "`this`" to be used when invoking the function.
* * `fn` - The function to be invoked. The function may have the `$inject` property that
* lists the set of arguments which should be auto-injected.
* (see {@link guide/dev_guide.di dependency injection}).
* * `locals(array)` - Optional array of arguments to pass to the function
* invocation after the injection arguments.
* * An `eager` property which is used to initialize the eager services.
* `injector.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 and assuming that they are the
* injection names.
*/
var FN_ARGS = /^function\s*[^\(]*\(([^\)]*)\)/m;
var FN_ARG_SPLIT = /,/;
var FN_ARG = /^\s*(.+?)\s*$/;
var STRIP_COMMENTS = /((\/\/.*$)|(\/\*[\s\S]*?\*\/))/mg;
function inferInjectionArgs(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){
args.push(name);
});
});
}
return fn.$inject;
}
///////////////////////////////////////
function createInjector(modulesToLoad, moduleRegistry) {
var cache = {},
$injector = internalInjector(cache),
providerSuffix = 'Provider',
providerSuffixLength = providerSuffix.length;
value('$injector', $injector);
value('$provide', {service: service, factory: factory, value: value});
function service(name, provider) {
if (isFunction(provider)){
provider = $injector.instantiate(provider);
}
if (!provider.$get) {
throw Error('Providers must define $get factory method.');
}
cache['#' + name + providerSuffix] = provider;
};
function factory(name, factoryFn) { service(name, { $get:factoryFn }); };
function value(name, value) { factory(name, valueFn(value)); };
function internalInjector(cache) {
var path = [];
function injector(value) {
switch(typeof value) {
case 'function':
return invoke(null, value);
case 'string':
var instanceKey = '#' + value,
instance = cache[instanceKey];
if (instance !== undefined || cache.hasOwnProperty(instanceKey)) {
return instance;
}
try {
path.unshift(value);
var providerKey = instanceKey + providerSuffix,
provider = cache[providerKey];
if (provider) {
return cache[instanceKey] = invoke(provider, provider.$get);
} else {
throw Error("Unknown provider for '" + path.join("' <- '") + "'.");
}
} finally {
path.shift();
}
case 'object':
if (value instanceof Array) {
return invoke(null, value);
}
default:
throw Error('Injector expects name or function.');
}
}
function invoke(self, fn, locals){
var args = [],
$inject,
length,
key;
if (fn instanceof Function) {
$inject = inferInjectionArgs(fn);
length = $inject.length;
} else {
if (fn instanceof Array) {
$inject = fn;
length = $inject.length;
fn = $inject[--length];
}
assertArgFn(fn, 'fn');
}
while(length--) {
key = $inject[length];
args.unshift(
locals && locals.hasOwnProperty(key)
? locals[key]
: injector($inject[length], path)
);
}
switch (self ? -1 : args.length) {
case 0: return fn();
case 1: return fn(args[0]);
case 2: return fn(args[0], args[1]);
case 3: return fn(args[0], args[1], args[2]);
case 4: return fn(args[0], args[1], args[2], args[3]);
case 5: return fn(args[0], args[1], args[2], args[3], args[4]);
case 6: return fn(args[0], args[1], args[2], args[3], args[4], args[5]);
case 7: return fn(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
case 8: return fn(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7]);
case 9: return fn(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8]);
case 10: return fn(args[0], args[1], args[2], args[3], args[4], args[5], args[6], args[7], args[8], args[9]);
default: return fn.apply(self, args);
}
};
injector.invoke = invoke;
injector.instantiate = function(Type, locals){
var Constructor = function(){},
instance;
Constructor.prototype = Type.prototype;
instance = new Constructor();
return invoke(instance, Type, locals) || instance;
};
return injector;
}
forEach(modulesToLoad, function(module){
if (isString(module)) {
if (moduleRegistry[module]) {
module = moduleRegistry[module];
} else {
throw Error("Module '" + module + "' is not defined!");
}
}
if (isFunction(module) || isArray(module)) {
$injector(module);
} else {
assertArgFn(module, 'module');
}
});
// instantiate $eager providers
// for perf we can't do forEach
for(var name in cache) {
var index = name.indexOf(providerSuffix);
if (index == name.length - providerSuffixLength && cache[name].$eager) {
$injector(name.substring(1, index));
}
}
return $injector;
}
|
