blob: 12721a47f478388e130d57f932a7af6aa96e04b3 (
plain)
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
|
/*********************************************************************
* Sangria *
* Copyright (C) 2014 Tavian Barnes <tavianator@tavianator.com> *
* *
* This library is free software. It comes without any warranty, to *
* the extent permitted by applicable law. You can redistribute it *
* and/or modify it under the terms of the Do What The Fuck You Want *
* To Public License, Version 2, as published by Sam Hocevar. See *
* the COPYING file or http://www.wtfpl.net/ for more details. *
*********************************************************************/
package com.tavianator.sangria.core;
import com.google.inject.Key;
/**
* Utility class for pretty-printing messages containing types.
*
* @author Tavian Barnes (tavianator@tavianator.com)
* @version 1.0
* @since 1.0
*/
public class PrettyTypes {
private PrettyTypes() {
// Not for instantiating
}
/**
* Format a message.
*
* @param message The format string.
* @param args The format arguments, possibly containing {@link Class} or {@link Key} instances to be
* pretty-printed.
* @return A formatted message.
* @see String#format(String, Object...)
*/
public static String format(String message, Object... args) {
// This is like Guice's internal Errors.format()
Object[] prettyArgs = new Object[args.length];
for (int i = 0; i < args.length; ++i) {
Object arg = args[i];
Object prettyArg;
if (arg instanceof Class) {
prettyArg = format((Class<?>)arg);
} else if (arg instanceof Key) {
prettyArg = format((Key<?>)arg);
} else {
prettyArg = arg;
}
prettyArgs[i] = prettyArg;
}
return String.format(message, prettyArgs);
}
private static String format(Class<?> type) {
return type.getCanonicalName();
}
private static String format(Key<?> key) {
StringBuilder builder = new StringBuilder(key.getTypeLiteral().toString());
if (key.getAnnotationType() != null) {
builder.append(" annotated with ");
if (key.getAnnotation() != null) {
builder.append(key.getAnnotation());
} else {
builder.append("@")
.append(format(key.getAnnotationType()));
}
}
return builder.toString();
}
}
|
