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
|
/*
* Rjb - Ruby <-> Java Bridge
* Copyright(c) 2004,2005,2006,2010 arton
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* $Id: rjbexception.c 174 2011-11-09 13:47:43Z arton $
*/
#include "ruby.h"
#include "extconf.h"
#if RJB_RUBY_VERSION_CODE < 190
#include "st.h"
#else
#include "ruby/st.h"
#endif
#include "jniwrap.h"
#include "riconv.h"
#include "rjb.h"
static VALUE missing_delegate(int argc, VALUE* argv, VALUE self)
{
ID rmid = rb_to_id(argv[0]);
return rb_funcall(rb_ivar_get(self, rb_intern("@cause")), rmid, argc - 1, argv + 1);
}
static VALUE get_cause(VALUE self)
{
return rb_funcall(rb_ivar_get(self, rb_intern("@cause")), rb_intern("cause"), 0);
}
static VALUE exception_to_s(VALUE self)
{
return rb_funcall(rb_ivar_get(self, rb_intern("@cause")),
rb_intern("toString"), 0);
}
/*
* handle Java exception
* At this time, the Java exception is defined without the package name.
* This design may change in future release.
*/
VALUE rjb_get_exception_class(JNIEnv* jenv, jstring str)
{
VALUE rexp;
char* pcls;
VALUE cname;
const char* p = (*jenv)->GetStringUTFChars(jenv, str, JNI_FALSE);
char* clsname = ALLOCA_N(char, strlen(p) + 1);
strcpy(clsname, p);
rjb_release_string(jenv, str, p);
pcls = strrchr(clsname, '.');
if (pcls)
{
pcls++;
}
else
{
pcls = clsname;
}
cname = rb_str_new2(pcls);
rexp = rb_hash_aref(rjb_loaded_classes, cname);
if (rexp == Qnil)
{
rexp = rb_define_class(pcls, rb_eStandardError);
rb_define_method(rexp, "cause", get_cause, 0);
rb_define_method(rexp, "method_missing", missing_delegate, -1);
rb_define_method(rexp, "to_str", exception_to_s, 0);
#if defined(HAVE_RB_HASH_ASET) || defined(RUBINIUS)
rb_hash_aset(rjb_loaded_classes, cname, rexp);
#else
#ifdef RHASH_TBL
st_insert(RHASH_TBL(rjb_loaded_classes), cname, rexp);
#else
st_insert(RHASH(rjb_loaded_classes)->tbl, cname, rexp);
#endif
#endif
}
return rexp;
}
/*
* throw newly created exception with supplied message.
*/
VALUE rjb_s_throw(int argc, VALUE* argv, VALUE self)
{
VALUE klass;
VALUE message;
JNIEnv* jenv = NULL;
rjb_load_vm_default();
jenv = rjb_attach_current_thread();
(*jenv)->ExceptionClear(jenv);
if (rb_scan_args(argc, argv, "11", &klass, &message) == 2)
{
jclass excep = rjb_find_class(jenv, klass);
if (excep == NULL)
{
rb_raise(rb_eRuntimeError, "`%s' not found", StringValueCStr(klass));
}
(*jenv)->ThrowNew(jenv, excep, StringValueCStr(message));
}
else
{
struct jvi_data* ptr;
Data_Get_Struct(klass, struct jvi_data, ptr);
if (!(*jenv)->IsInstanceOf(jenv, ptr->obj, rjb_j_throwable))
{
rb_raise(rb_eRuntimeError, "arg1 must be a throwable");
}
else
{
(*jenv)->Throw(jenv, ptr->obj);
}
}
return Qnil;
}
void rjb_check_exception(JNIEnv* jenv, int t)
{
jthrowable exp = (*jenv)->ExceptionOccurred(jenv);
if (exp)
{
VALUE rexp = Qnil;
if (RTEST(ruby_verbose))
{
(*jenv)->ExceptionDescribe(jenv);
}
(*jenv)->ExceptionClear(jenv);
if(1)
{
char* msg = "unknown exception";
jclass cls = (*jenv)->GetObjectClass(jenv, exp);
jstring str = (*jenv)->CallObjectMethod(jenv, exp, rjb_throwable_getMessage);
if (str)
{
const char* p = (*jenv)->GetStringUTFChars(jenv, str, JNI_FALSE);
msg = ALLOCA_N(char, strlen(p) + 1);
strcpy(msg, p);
rjb_release_string(jenv, str, p);
}
str = (*jenv)->CallObjectMethod(jenv, cls, rjb_class_getName);
if (str)
{
rexp = rjb_get_exception_class(jenv, str);
}
if (rexp == Qnil)
{
(*jenv)->DeleteLocalRef(jenv, exp);
rb_raise(rb_eRuntimeError, "%s", msg);
}
else
{
VALUE rexpi = rb_funcall(rexp, rb_intern("new"), 1, rb_str_new2(msg));
jvalue val;
val.l = exp;
rb_ivar_set(rexpi, rb_intern("@cause"), jv2rv(jenv, val));
rb_exc_raise(rexpi);
}
}
}
}
|
