aermicioi.aedi.exception.in_progress

1 /**
2 
3 License:
4 	Boost Software License - Version 1.0 - August 17th, 2003
5 
6     Permission is hereby granted, free of charge, to any person or organization
7     obtaining a copy of the software and accompanying documentation covered by
8     this license (the "Software") to use, reproduce, display, distribute,
9     execute, and transmit the Software, and to prepare derivative works of the
10     Software, and to permit third-parties to whom the Software is furnished to
11     do so, all subject to the following:
12 
13     The copyright notices in the Software and this entire statement, including
14     the above license grant, this restriction and the following disclaimer,
15     must be included in all copies of the Software, in whole or in part, and
16     all derivative works of the Software, unless such copies or derivative
17     works are solely in the form of machine-executable object code generated by
18     a source language processor.
19 
20     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21     IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22     FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
23     SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
24     FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
25     ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
26     DEALINGS IN THE SOFTWARE.
27 
28 Authors:
29 	Alexandru Ermicioi
30 **/
31 module aermicioi.aedi.exception.in_progress_exception;
32 
33 import aermicioi.aedi.exception.di_exception;
34 import aermicioi.aedi.util.range : BufferSink;
35 
36 /**
37 Thrown when a new object is requested from factory when it is already in process of creating another one.
38 
39 Usually it tells the DI that there is a circular dependency when it tries to construct a object.
40 **/
41 @safe class InProgressException : AediException {
42     /**
43     Type of component on which this exception was thrown
44     **/
45     TypeInfo type;
46 
47     /**
48      * Creates a new instance of Exception. The nextInChain parameter is used
49      * internally and should always be $(D null) when passed by user code.
50      * This constructor does not automatically throw the newly-created
51      * Exception; the $(D throw) statement should be used for that purpose.
52      */
53 	pure nothrow this(string msg, string identity, TypeInfo type, string file = __FILE__, size_t line = __LINE__, Throwable next = null)
54     {
55         super(msg, identity, file, line, next);
56         this.type = type;
57     }
58 
59     /**
60     ditto
61     **/
62     nothrow this(string msg, string identity, TypeInfo type, Throwable next, string file = __FILE__, size_t line = __LINE__)
63     {
64         super(msg, identity, file, line, next);
65         this.type = type;
66     }
67 
68     override void pushMessage(scope void delegate(in char[]) sink) const @system {
69         import std.algorithm : substitute;
70         import std.utf : byChar;
71 		auto substituted = this.msg.substitute("${identity}", identity, "${type}", type.toString).byChar;
72 
73         while (!substituted.empty) {
74             auto buffer = BufferSink!(char[256])();
75             buffer.put(substituted);
76 
77             sink(buffer.slice);
78         }
79 	}
80 }