1 | static Object call(Object o, String method, Object... args) {
|
2 | try {
|
3 | Method m = call_findMethod(o, method, args, false); |
4 | m.setAccessible(true); |
5 | return m.invoke(o, args); |
6 | } catch (Exception e) {
|
7 | throw new RuntimeException(e); |
8 | } |
9 | } |
10 | |
11 | static Object call(Class c, String method, Object... args) {
|
12 | try {
|
13 | Method m = call_findStaticMethod(c, method, args, false); |
14 | m.setAccessible(true); |
15 | return m.invoke(null, args); |
16 | } catch (Exception e) {
|
17 | throw new RuntimeException(e); |
18 | } |
19 | } |
20 | |
21 | static Method call_findStaticMethod(Class c, String method, Object[] args, boolean debug) {
|
22 | while (c != null) {
|
23 | for (Method m : c.getDeclaredMethods()) {
|
24 | if (debug) |
25 | System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
|
26 | if (!m.getName().equals(method)) {
|
27 | if (debug) System.out.println("Method name mismatch: " + method);
|
28 | continue; |
29 | } |
30 | |
31 | if ((m.getModifiers() & Modifier.STATIC) == 0 || !call_checkArgs(m, args, debug)) |
32 | continue; |
33 | |
34 | return m; |
35 | } |
36 | c = c.getSuperclass(); |
37 | } |
38 | throw new RuntimeException("Method '" + method + "' (static) with " + args.length + " parameter(s) not found in " + c.getName());
|
39 | } |
40 | |
41 | static Method call_findMethod(Object o, String method, Object[] args, boolean debug) {
|
42 | Class c = o.getClass(); |
43 | while (c != null) {
|
44 | for (Method m : c.getDeclaredMethods()) {
|
45 | if (debug) |
46 | System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");;
|
47 | if (m.getName().equals(method) && call_checkArgs(m, args, debug)) |
48 | return m; |
49 | } |
50 | c = c.getSuperclass(); |
51 | } |
52 | throw new RuntimeException("Method '" + method + "' (non-static) with " + args.length + " parameter(s) not found in " + o.getClass().getName());
|
53 | } |
54 | |
55 | private static boolean call_checkArgs(Method m, Object[] args, boolean debug) {
|
56 | Class<?>[] types = m.getParameterTypes(); |
57 | if (types.length != args.length) {
|
58 | if (debug) |
59 | System.out.println("Bad parameter length: " + args.length + " vs " + types.length);
|
60 | return false; |
61 | } |
62 | for (int i = 0; i < types.length; i++) |
63 | if (!(args[i] == null || types[i].isInstance(args[i]))) {
|
64 | if (debug) |
65 | System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]);
|
66 | return false; |
67 | } |
68 | return true; |
69 | } |
Began life as a copy of #2000492
Snippet is not live.
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| ID | Author/Program | Comment | Date | |
|---|---|---|---|---|
| 862 | #1000610 | Edit suggestion: !636 !629 main { static Object androidContext; static String programID; public static void main(String[] args) throws Exception { static Object call(Object o, String method, Object... args) { try { Method m = call_findMethod(o, method, args, false); m.setAccessible(true); return m.invoke(o, args); } catch (Exception e) { throw new RuntimeException(e); } } static Object call(Class c, String method, Object... args) { try { Method m = call_findStaticMethod(c, method, args, false); m.setAccessible(true); return m.invoke(null, args); } catch (Exception e) { throw new RuntimeException(e); } } static Method call_findStaticMethod(Class c, String method, Object[] args, boolean debug) { while (c != null) { for (Method m : c.getDeclaredMethods()) { if (debug) System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");; if (!m.getName().equals(method)) { if (debug) System.out.println("Method name mismatch: " + method); continue; } if ((m.getModifiers() & Modifier.STATIC) == 0 || !call_checkArgs(m, args, debug)) continue; return m; } c = c.getSuperclass(); } throw new RuntimeException("Method '" + method + "' (static) with " + args.length + " parameter(s) not found in " + c.getName()); } static Method call_findMethod(Object o, String method, Object[] args, boolean debug) { Class c = o.getClass(); while (c != null) { for (Method m : c.getDeclaredMethods()) { if (debug) System.out.println("Checking method " + m.getName() + " with " + m.getParameterTypes().length + " parameters");; if (m.getName().equals(method) && call_checkArgs(m, args, debug)) return m; } c = c.getSuperclass(); } throw new RuntimeException("Method '" + method + "' (non-static) with " + args.length + " parameter(s) not found in " + o.getClass().getName()); } private static boolean call_checkArgs(Method m, Object[] args, boolean debug) { Class<?>[] types = m.getParameterTypes(); if (types.length != args.length) { if (debug) System.out.println("Bad parameter length: " + args.length + " vs " + types.length); return false; } for (int i = 0; i < types.length; i++) if (!(args[i] == null || types[i].isInstance(args[i]))) { if (debug) System.out.println("Bad parameter " + i + ": " + args[i] + " vs " + types[i]); return false; } return true; } }} | 2015-08-19 22:48:19 | delete |
| 796 | #1000604 (pitcher) | 2015-08-18 00:07:22 |
| Snippet ID: | #2000497 |
| Snippet name: | call function(s) for reflective calls (e.g. to hotwired objects), fixed, not requiring translator |
| Eternal ID of this version: | #2000497/1 |
| Text MD5: | 827ea77428a09af0e1e6d0faaf4308a5 |
| Author: | stefan |
| Category: | |
| Type: | New Tinybrain snippet |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2015-08-05 17:35:01 |
| Source code size: | 2576 bytes / 69 lines |
| Pitched / IR pitched: | No / Yes |
| Views / Downloads: | 846 / 1023 |
| Referenced in: | [show references] |