Mercurial > hg > truffle
comparison src/share/vm/runtime/fieldType.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 1997-2000 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_fieldType.cpp.incl" | |
27 | |
28 void FieldType::skip_optional_size(symbolOop signature, int* index) { | |
29 jchar c = signature->byte_at(*index); | |
30 while (c >= '0' && c <= '9') { | |
31 *index = *index + 1; | |
32 c = signature->byte_at(*index); | |
33 } | |
34 } | |
35 | |
36 BasicType FieldType::basic_type(symbolOop signature) { | |
37 return char2type(signature->byte_at(0)); | |
38 } | |
39 | |
40 // Check if it is a valid array signature | |
41 bool FieldType::is_valid_array_signature(symbolOop sig) { | |
42 assert(sig->utf8_length() > 1, "this should already have been checked"); | |
43 assert(sig->byte_at(0) == '[', "this should already have been checked"); | |
44 // The first character is already checked | |
45 int i = 1; | |
46 int len = sig->utf8_length(); | |
47 // First skip all '['s | |
48 while(i < len - 1 && sig->byte_at(i) == '[') i++; | |
49 | |
50 // Check type | |
51 switch(sig->byte_at(i)) { | |
52 case 'B': // T_BYTE | |
53 case 'C': // T_CHAR | |
54 case 'D': // T_DOUBLE | |
55 case 'F': // T_FLOAT | |
56 case 'I': // T_INT | |
57 case 'J': // T_LONG | |
58 case 'S': // T_SHORT | |
59 case 'Z': // T_BOOLEAN | |
60 // If it is an array, the type is the last character | |
61 return (i + 1 == len); | |
62 case 'L': | |
63 // If it is an object, the last character must be a ';' | |
64 return sig->byte_at(len - 1) == ';'; | |
65 } | |
66 | |
67 return false; | |
68 } | |
69 | |
70 | |
71 BasicType FieldType::get_array_info(symbolOop signature, jint* dimension, symbolOop* object_key, TRAPS) { | |
72 assert(basic_type(signature) == T_ARRAY, "must be array"); | |
73 int index = 1; | |
74 int dim = 1; | |
75 skip_optional_size(signature, &index); | |
76 while (signature->byte_at(index) == '[') { | |
77 index++; | |
78 dim++; | |
79 skip_optional_size(signature, &index); | |
80 } | |
81 ResourceMark rm; | |
82 symbolOop element = oopFactory::new_symbol(signature->as_C_string() + index, CHECK_(T_BYTE)); | |
83 BasicType element_type = FieldType::basic_type(element); | |
84 if (element_type == T_OBJECT) { | |
85 char* object_type = element->as_C_string(); | |
86 object_type[element->utf8_length() - 1] = '\0'; | |
87 *object_key = oopFactory::new_symbol(object_type + 1, CHECK_(T_BYTE)); | |
88 } | |
89 // Pass dimension back to caller | |
90 *dimension = dim; | |
91 return element_type; | |
92 } |