ciSignature.cpp revision 0:a61af66fc99e 
1/*
2 * Copyright 1999-2007 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/_ciSignature.cpp.incl"
27
28// ciSignature
29//
30// This class represents the signature of a method.
31
32// ------------------------------------------------------------------
33// ciSignature::ciSignature
34ciSignature::ciSignature(ciKlass* accessing_klass, ciSymbol* symbol) {
35  ASSERT_IN_VM;
36  EXCEPTION_CONTEXT;
37  _accessing_klass = accessing_klass;
38  _symbol = symbol;
39
40  ciEnv* env = CURRENT_ENV;
41  Arena* arena = env->arena();
42  _types = new (arena) GrowableArray<ciType*>(arena, 8, 0, NULL);
43
44  int size = 0;
45  int count = 0;
46  symbolHandle sh (THREAD, symbol->get_symbolOop());
47  SignatureStream ss(sh);
48  for (; ; ss.next()) {
49    // Process one element of the signature
50    ciType* type;
51    if (!ss.is_object()) {
52      type = ciType::make(ss.type());
53    } else {
54      symbolOop name = ss.as_symbol(THREAD);
55      if (HAS_PENDING_EXCEPTION) {
56        type = ss.is_array() ? (ciType*)ciEnv::unloaded_ciobjarrayklass()
57          : (ciType*)ciEnv::unloaded_ciinstance_klass();
58        env->record_out_of_memory_failure();
59        CLEAR_PENDING_EXCEPTION;
60      } else {
61        ciSymbol* klass_name = env->get_object(name)->as_symbol();
62        type = env->get_klass_by_name_impl(_accessing_klass, klass_name, false);
63      }
64    }
65    _types->append(type);
66    if (ss.at_return_type()) {
67      // Done processing the return type; do not add it into the count.
68      break;
69    }
70    size += type->size();
71    count++;
72  }
73  _size = size;
74  _count = count;
75}
76
77// ------------------------------------------------------------------
78// ciSignature::return_ciType
79//
80// What is the return type of this signature?
81ciType* ciSignature::return_type() const {
82  return _types->at(_count);
83}
84
85// ------------------------------------------------------------------
86// ciSignature::ciType_at
87//
88// What is the type of the index'th element of this
89// signature?
90ciType* ciSignature::type_at(int index) const {
91  assert(index < _count, "out of bounds");
92  // The first _klasses element holds the return klass.
93  return _types->at(index);
94}
95
96// ------------------------------------------------------------------
97// ciSignature::print_signature
98void ciSignature::print_signature() {
99  _symbol->print_symbol();
100}
101
102// ------------------------------------------------------------------
103// ciSignature::print
104void ciSignature::print() {
105  tty->print("<ciSignature symbol=");
106  print_signature();
107 tty->print(" accessing_klass=");
108  _accessing_klass->print();
109  tty->print(" address=0x%x>", (address)this);
110}
111