author | lana |
Fri, 08 Nov 2013 17:36:14 -0800 | |
changeset 21637 | fcaf599f308f |
parent 21604 | 2ad6b165b7d8 |
parent 21278 | ef8a3a2a72f2 |
child 23010 | 6dadb192ad81 |
permissions | -rw-r--r-- |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
1 |
/* |
13422 | 2 |
* Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
4 |
* |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
5 |
* This code is free software; you can redistribute it and/or modify it |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
6 |
* under the terms of the GNU General Public License version 2 only, as |
5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
8 |
* particular file as subject to the "Classpath" exception as provided |
5506 | 9 |
* by Oracle in the LICENSE file that accompanied this code. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
10 |
* |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
15 |
* accompanied this code). |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
16 |
* |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
17 |
* You should have received a copy of the GNU General Public License version |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation, |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
20 |
* |
5506 | 21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
22 |
* or visit www.oracle.com if you need additional information or have any |
|
23 |
* questions. |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
24 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
25 |
|
8822
8145ab9f5f86
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8821
diff
changeset
|
26 |
package java.lang.invoke; |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
27 |
|
9646
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
28 |
import sun.invoke.util.Wrapper; |
13422 | 29 |
import java.lang.ref.WeakReference; |
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
30 |
import java.lang.ref.Reference; |
13422 | 31 |
import java.lang.ref.ReferenceQueue; |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
32 |
import java.util.Arrays; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
33 |
import java.util.Collections; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
34 |
import java.util.List; |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
35 |
import java.util.Objects; |
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
36 |
import java.util.concurrent.ConcurrentMap; |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
37 |
import java.util.concurrent.ConcurrentHashMap; |
8822
8145ab9f5f86
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8821
diff
changeset
|
38 |
import sun.invoke.util.BytecodeDescriptor; |
8145ab9f5f86
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8821
diff
changeset
|
39 |
import static java.lang.invoke.MethodHandleStatics.*; |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
40 |
import sun.invoke.util.VerifyType; |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
41 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
42 |
/** |
5722
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
43 |
* A method type represents the arguments and return type accepted and |
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
44 |
* returned by a method handle, or the arguments and return type passed |
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
45 |
* and expected by a method handle caller. Method types must be properly |
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
46 |
* matched between a method handle and all its callers, |
7052
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
47 |
* and the JVM's operations enforce this matching at, specifically |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
48 |
* during calls to {@link MethodHandle#invokeExact MethodHandle.invokeExact} |
9645
dabb5e4edc4c
7034977: JSR 292 MethodHandle.invokeGeneric should be renamed MethodHandle.invoke
jrose
parents:
8822
diff
changeset
|
49 |
* and {@link MethodHandle#invoke MethodHandle.invoke}, and during execution |
7052
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
50 |
* of {@code invokedynamic} instructions. |
5722
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
51 |
* <p> |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
52 |
* The structure is a return type accompanied by any number of parameter types. |
7052
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
53 |
* The types (primitive, {@code void}, and reference) are represented by {@link Class} objects. |
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
54 |
* (For ease of exposition, we treat {@code void} as if it were a type. |
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
55 |
* In fact, it denotes the absence of a return type.) |
5722
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
56 |
* <p> |
7052
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
57 |
* All instances of {@code MethodType} are immutable. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
58 |
* Two instances are completely interchangeable if they compare equal. |
5722
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
59 |
* Equality depends on pairwise correspondence of the return and parameter types and on nothing else. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
60 |
* <p> |
5722
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
61 |
* This type can be created only by factory methods. |
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
62 |
* All factory methods may cache values, though caching is not guaranteed. |
7562
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
63 |
* Some factory methods are static, while others are virtual methods which |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
64 |
* modify precursor method types, e.g., by changing a selected parameter. |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
65 |
* <p> |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
66 |
* Factory methods which operate on groups of parameter types |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
67 |
* are systematically presented in two versions, so that both Java arrays and |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
68 |
* Java lists can be used to work with groups of parameter types. |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
69 |
* The query methods {@code parameterArray} and {@code parameterList} |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
70 |
* also provide a choice between arrays and lists. |
5722
4ada807383c8
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
4537
diff
changeset
|
71 |
* <p> |
7052
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
72 |
* {@code MethodType} objects are sometimes derived from bytecode instructions |
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
73 |
* such as {@code invokedynamic}, specifically from the type descriptor strings associated |
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
74 |
* with the instructions in a class file's constant pool. |
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
75 |
* <p> |
7562
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
76 |
* Like classes and strings, method types can also be represented directly |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
77 |
* in a class file's constant pool as constants. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
78 |
* A method type may be loaded by an {@code ldc} instruction which refers |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
79 |
* to a suitable {@code CONSTANT_MethodType} constant pool entry. |
7562
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
80 |
* The entry refers to a {@code CONSTANT_Utf8} spelling for the descriptor string. |
20535
cc85c8626435
8024438: JSR 292 API specification maintenance for JDK 8
jrose
parents:
20494
diff
changeset
|
81 |
* (For full details on method type constants, |
cc85c8626435
8024438: JSR 292 API specification maintenance for JDK 8
jrose
parents:
20494
diff
changeset
|
82 |
* see sections 4.4.8 and 5.4.3.5 of the Java Virtual Machine Specification.) |
7562
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
83 |
* <p> |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
84 |
* When the JVM materializes a {@code MethodType} from a descriptor string, |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
85 |
* all classes named in the descriptor must be accessible, and will be loaded. |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
86 |
* (But the classes need not be initialized, as is the case with a {@code CONSTANT_Class}.) |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
87 |
* This loading may occur at any time before the {@code MethodType} object is first derived. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
88 |
* @author John Rose, JSR 292 EG |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
89 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
90 |
public final |
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
91 |
class MethodType implements java.io.Serializable { |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
92 |
private static final long serialVersionUID = 292L; // {rtype, {ptype...}} |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
93 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
94 |
// The rtype and ptypes fields define the structural identity of the method type: |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
95 |
private final Class<?> rtype; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
96 |
private final Class<?>[] ptypes; |
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
97 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
98 |
// The remaining fields are caches of various sorts: |
20494
cf77ae5ff678
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
18569
diff
changeset
|
99 |
private @Stable MethodTypeForm form; // erased form, plus cached data about primitives |
cf77ae5ff678
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
18569
diff
changeset
|
100 |
private @Stable MethodType wrapAlt; // alternative wrapped/unwrapped version |
cf77ae5ff678
8001107: @Stable annotation for constant folding of lazily evaluated variables
vlivanov
parents:
18569
diff
changeset
|
101 |
private @Stable Invokers invokers; // cache of handy higher-order adapters |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
102 |
private @Stable String methodDescriptor; // cache for toMethodDescriptorString |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
103 |
|
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
104 |
/** |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
105 |
* Check the given parameters for validity and store them into the final fields. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
106 |
*/ |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
107 |
private MethodType(Class<?> rtype, Class<?>[] ptypes, boolean trusted) { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
108 |
checkRtype(rtype); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
109 |
checkPtypes(ptypes); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
110 |
this.rtype = rtype; |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
111 |
// defensively copy the array passed in by the user |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
112 |
this.ptypes = trusted ? ptypes : Arrays.copyOf(ptypes, ptypes.length); |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
113 |
} |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
114 |
|
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
115 |
/** |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
116 |
* Construct a temporary unchecked instance of MethodType for use only as a key to the intern table. |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
117 |
* Does not check the given parameters for validity, and must be discarded after it is used as a searching key. |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
118 |
* The parameters are reversed for this constructor, so that is is not accidentally used. |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
119 |
*/ |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
120 |
private MethodType(Class<?>[] ptypes, Class<?> rtype) { |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
121 |
this.rtype = rtype; |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
122 |
this.ptypes = ptypes; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
123 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
124 |
|
8821
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
125 |
/*trusted*/ MethodTypeForm form() { return form; } |
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
126 |
/*trusted*/ Class<?> rtype() { return rtype; } |
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
127 |
/*trusted*/ Class<?>[] ptypes() { return ptypes; } |
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
128 |
|
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
129 |
void setForm(MethodTypeForm f) { form = f; } |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
130 |
|
13610
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
131 |
/** This number, mandated by the JVM spec as 255, |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
132 |
* is the maximum number of <em>slots</em> |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
133 |
* that any Java method can receive in its argument list. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
134 |
* It limits both JVM signatures and method type objects. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
135 |
* The longest possible invocation will look like |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
136 |
* {@code staticMethod(arg1, arg2, ..., arg255)} or |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
137 |
* {@code x.virtualMethod(arg1, arg2, ..., arg254)}. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
138 |
*/ |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
139 |
/*non-public*/ static final int MAX_JVM_ARITY = 255; // this is mandated by the JVM spec. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
140 |
|
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
141 |
/** This number is the maximum arity of a method handle, 254. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
142 |
* It is derived from the absolute JVM-imposed arity by subtracting one, |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
143 |
* which is the slot occupied by the method handle itself at the |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
144 |
* beginning of the argument list used to invoke the method handle. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
145 |
* The longest possible invocation will look like |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
146 |
* {@code mh.invoke(arg1, arg2, ..., arg254)}. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
147 |
*/ |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
148 |
// Issue: Should we allow MH.invokeWithArguments to go to the full 255? |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
149 |
/*non-public*/ static final int MAX_MH_ARITY = MAX_JVM_ARITY-1; // deduct one for mh receiver |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
150 |
|
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
151 |
/** This number is the maximum arity of a method handle invoker, 253. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
152 |
* It is derived from the absolute JVM-imposed arity by subtracting two, |
20877
83ea903d5cf1
8026183: minor documentation problems in java.lang.invoke
rriggs
parents:
20535
diff
changeset
|
153 |
* which are the slots occupied by invoke method handle, and the |
13610
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
154 |
* target method handle, which are both at the beginning of the argument |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
155 |
* list used to invoke the target method handle. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
156 |
* The longest possible invocation will look like |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
157 |
* {@code invokermh.invoke(targetmh, arg1, arg2, ..., arg253)}. |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
158 |
*/ |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
159 |
/*non-public*/ static final int MAX_MH_INVOKER_ARITY = MAX_MH_ARITY-1; // deduct one more for invoker |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
160 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
161 |
private static void checkRtype(Class<?> rtype) { |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
162 |
Objects.requireNonNull(rtype); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
163 |
} |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
164 |
private static void checkPtype(Class<?> ptype) { |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
165 |
Objects.requireNonNull(ptype); |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
166 |
if (ptype == void.class) |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
167 |
throw newIllegalArgumentException("parameter type cannot be void"); |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
168 |
} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
169 |
/** Return number of extra slots (count of long/double args). */ |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
170 |
private static int checkPtypes(Class<?>[] ptypes) { |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
171 |
int slots = 0; |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
172 |
for (Class<?> ptype : ptypes) { |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
173 |
checkPtype(ptype); |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
174 |
if (ptype == double.class || ptype == long.class) { |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
175 |
slots++; |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
176 |
} |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
177 |
} |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
178 |
checkSlotCount(ptypes.length + slots); |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
179 |
return slots; |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
180 |
} |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
181 |
static void checkSlotCount(int count) { |
13610
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
182 |
assert((MAX_JVM_ARITY & (MAX_JVM_ARITY+1)) == 0); |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
183 |
// MAX_JVM_ARITY must be power of 2 minus 1 for following code trick to work: |
28122b96858e
7191102: nightly failures after JSR 292 lazy method handle update (round 3)
jrose
parents:
13423
diff
changeset
|
184 |
if ((count & MAX_JVM_ARITY) != count) |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
185 |
throw newIllegalArgumentException("bad parameter count "+count); |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
186 |
} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
187 |
private static IndexOutOfBoundsException newIndexOutOfBoundsException(Object num) { |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
188 |
if (num instanceof Integer) num = "bad index: "+num; |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
189 |
return new IndexOutOfBoundsException(num.toString()); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
190 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
191 |
|
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
192 |
static final ConcurrentWeakInternSet<MethodType> internTable = new ConcurrentWeakInternSet<>(); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
193 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
194 |
static final Class<?>[] NO_PTYPES = {}; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
195 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
196 |
/** |
8822
8145ab9f5f86
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8821
diff
changeset
|
197 |
* Finds or creates an instance of the given method type. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
198 |
* @param rtype the return type |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
199 |
* @param ptypes the parameter types |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
200 |
* @return a method type with the given components |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
201 |
* @throws NullPointerException if {@code rtype} or {@code ptypes} or any element of {@code ptypes} is null |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
202 |
* @throws IllegalArgumentException if any element of {@code ptypes} is {@code void.class} |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
203 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
204 |
public static |
4537 | 205 |
MethodType methodType(Class<?> rtype, Class<?>[] ptypes) { |
206 |
return makeImpl(rtype, ptypes, false); |
|
207 |
} |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
208 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
209 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
210 |
* Finds or creates a method type with the given components. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
211 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
18569 | 212 |
* @param rtype the return type |
213 |
* @param ptypes the parameter types |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
214 |
* @return a method type with the given components |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
215 |
* @throws NullPointerException if {@code rtype} or {@code ptypes} or any element of {@code ptypes} is null |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
216 |
* @throws IllegalArgumentException if any element of {@code ptypes} is {@code void.class} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
217 |
*/ |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
218 |
public static |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
219 |
MethodType methodType(Class<?> rtype, List<Class<?>> ptypes) { |
4537 | 220 |
boolean notrust = false; // random List impl. could return evil ptypes array |
9731
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
221 |
return makeImpl(rtype, listToArray(ptypes), notrust); |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
222 |
} |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
223 |
|
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
224 |
private static Class<?>[] listToArray(List<Class<?>> ptypes) { |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
225 |
// sanity check the size before the toArray call, since size might be huge |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
226 |
checkSlotCount(ptypes.size()); |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
227 |
return ptypes.toArray(NO_PTYPES); |
4537 | 228 |
} |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
229 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
230 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
231 |
* Finds or creates a method type with the given components. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
232 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
233 |
* The leading parameter type is prepended to the remaining array. |
18569 | 234 |
* @param rtype the return type |
235 |
* @param ptype0 the first parameter type |
|
236 |
* @param ptypes the remaining parameter types |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
237 |
* @return a method type with the given components |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
238 |
* @throws NullPointerException if {@code rtype} or {@code ptype0} or {@code ptypes} or any element of {@code ptypes} is null |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
239 |
* @throws IllegalArgumentException if {@code ptype0} or {@code ptypes} or any element of {@code ptypes} is {@code void.class} |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
240 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
241 |
public static |
4537 | 242 |
MethodType methodType(Class<?> rtype, Class<?> ptype0, Class<?>... ptypes) { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
243 |
Class<?>[] ptypes1 = new Class<?>[1+ptypes.length]; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
244 |
ptypes1[0] = ptype0; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
245 |
System.arraycopy(ptypes, 0, ptypes1, 1, ptypes.length); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
246 |
return makeImpl(rtype, ptypes1, true); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
247 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
248 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
249 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
250 |
* Finds or creates a method type with the given components. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
251 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
252 |
* The resulting method has no parameter types. |
18569 | 253 |
* @param rtype the return type |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
254 |
* @return a method type with the given return value |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
255 |
* @throws NullPointerException if {@code rtype} is null |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
256 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
257 |
public static |
4537 | 258 |
MethodType methodType(Class<?> rtype) { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
259 |
return makeImpl(rtype, NO_PTYPES, true); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
260 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
261 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
262 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
263 |
* Finds or creates a method type with the given components. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
264 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
265 |
* The resulting method has the single given parameter type. |
18569 | 266 |
* @param rtype the return type |
267 |
* @param ptype0 the parameter type |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
268 |
* @return a method type with the given return value and parameter type |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
269 |
* @throws NullPointerException if {@code rtype} or {@code ptype0} is null |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
270 |
* @throws IllegalArgumentException if {@code ptype0} is {@code void.class} |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
271 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
272 |
public static |
4537 | 273 |
MethodType methodType(Class<?> rtype, Class<?> ptype0) { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
274 |
return makeImpl(rtype, new Class<?>[]{ ptype0 }, true); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
275 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
276 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
277 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
278 |
* Finds or creates a method type with the given components. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
279 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
280 |
* The resulting method has the same parameter types as {@code ptypes}, |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
281 |
* and the specified return type. |
18569 | 282 |
* @param rtype the return type |
283 |
* @param ptypes the method type which supplies the parameter types |
|
284 |
* @return a method type with the given components |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
285 |
* @throws NullPointerException if {@code rtype} or {@code ptypes} is null |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
286 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
287 |
public static |
4537 | 288 |
MethodType methodType(Class<?> rtype, MethodType ptypes) { |
289 |
return makeImpl(rtype, ptypes.ptypes, true); |
|
290 |
} |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
291 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
292 |
/** |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
293 |
* Sole factory method to find or create an interned method type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
294 |
* @param rtype desired return type |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
295 |
* @param ptypes desired parameter types |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
296 |
* @param trusted whether the ptypes can be used without cloning |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
297 |
* @return the unique method type of the desired structure |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
298 |
*/ |
8821
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
299 |
/*trusted*/ static |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
300 |
MethodType makeImpl(Class<?> rtype, Class<?>[] ptypes, boolean trusted) { |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
301 |
MethodType mt = internTable.get(new MethodType(ptypes, rtype)); |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
302 |
if (mt != null) |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
303 |
return mt; |
9731
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
304 |
if (ptypes.length == 0) { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
305 |
ptypes = NO_PTYPES; trusted = true; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
306 |
} |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
307 |
mt = new MethodType(rtype, ptypes, trusted); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
308 |
// promote the object to the Real Thing, and reprobe |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
309 |
mt.form = MethodTypeForm.findForm(mt); |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
310 |
return internTable.add(mt); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
311 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
312 |
private static final MethodType[] objectOnlyTypes = new MethodType[20]; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
313 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
314 |
/** |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
315 |
* Finds or creates a method type whose components are {@code Object} with an optional trailing {@code Object[]} array. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
316 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
4537 | 317 |
* All parameters and the return type will be {@code Object}, |
9646
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
318 |
* except the final array parameter if any, which will be {@code Object[]}. |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
319 |
* @param objectArgCount number of parameters (excluding the final array parameter if any) |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
320 |
* @param finalArray whether there will be a trailing array parameter, of type {@code Object[]} |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
321 |
* @return a generally applicable method type, for all calls of the given fixed argument count and a collected array of further arguments |
9752
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
322 |
* @throws IllegalArgumentException if {@code objectArgCount} is negative or greater than 255 (or 254, if {@code finalArray} is true) |
4537 | 323 |
* @see #genericMethodType(int) |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
324 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
325 |
public static |
9646
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
326 |
MethodType genericMethodType(int objectArgCount, boolean finalArray) { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
327 |
MethodType mt; |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
328 |
checkSlotCount(objectArgCount); |
9646
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
329 |
int ivarargs = (!finalArray ? 0 : 1); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
330 |
int ootIndex = objectArgCount*2 + ivarargs; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
331 |
if (ootIndex < objectOnlyTypes.length) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
332 |
mt = objectOnlyTypes[ootIndex]; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
333 |
if (mt != null) return mt; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
334 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
335 |
Class<?>[] ptypes = new Class<?>[objectArgCount + ivarargs]; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
336 |
Arrays.fill(ptypes, Object.class); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
337 |
if (ivarargs != 0) ptypes[objectArgCount] = Object[].class; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
338 |
mt = makeImpl(Object.class, ptypes, true); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
339 |
if (ootIndex < objectOnlyTypes.length) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
340 |
objectOnlyTypes[ootIndex] = mt; // cache it here also! |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
341 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
342 |
return mt; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
343 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
344 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
345 |
/** |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
346 |
* Finds or creates a method type whose components are all {@code Object}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
347 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
348 |
* All parameters and the return type will be Object. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
349 |
* @param objectArgCount number of parameters |
9645
dabb5e4edc4c
7034977: JSR 292 MethodHandle.invokeGeneric should be renamed MethodHandle.invoke
jrose
parents:
8822
diff
changeset
|
350 |
* @return a generally applicable method type, for all calls of the given argument count |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
351 |
* @throws IllegalArgumentException if {@code objectArgCount} is negative or greater than 255 |
4537 | 352 |
* @see #genericMethodType(int, boolean) |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
353 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
354 |
public static |
4537 | 355 |
MethodType genericMethodType(int objectArgCount) { |
356 |
return genericMethodType(objectArgCount, false); |
|
357 |
} |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
358 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
359 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
360 |
* Finds or creates a method type with a single different parameter type. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
361 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
362 |
* @param num the index (zero-based) of the parameter type to change |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
363 |
* @param nptype a new parameter type to replace the old one with |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
364 |
* @return the same type, except with the selected parameter changed |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
365 |
* @throws IndexOutOfBoundsException if {@code num} is not a valid index into {@code parameterArray()} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
366 |
* @throws IllegalArgumentException if {@code nptype} is {@code void.class} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
367 |
* @throws NullPointerException if {@code nptype} is null |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
368 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
369 |
public MethodType changeParameterType(int num, Class<?> nptype) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
370 |
if (parameterType(num) == nptype) return this; |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
371 |
checkPtype(nptype); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
372 |
Class<?>[] nptypes = ptypes.clone(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
373 |
nptypes[num] = nptype; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
374 |
return makeImpl(rtype, nptypes, true); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
375 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
376 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
377 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
378 |
* Finds or creates a method type with additional parameter types. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
379 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
4537 | 380 |
* @param num the position (zero-based) of the inserted parameter type(s) |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
381 |
* @param ptypesToInsert zero or more new parameter types to insert into the parameter list |
4537 | 382 |
* @return the same type, except with the selected parameter(s) inserted |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
383 |
* @throws IndexOutOfBoundsException if {@code num} is negative or greater than {@code parameterCount()} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
384 |
* @throws IllegalArgumentException if any element of {@code ptypesToInsert} is {@code void.class} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
385 |
* or if the resulting method type would have more than 255 parameter slots |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
386 |
* @throws NullPointerException if {@code ptypesToInsert} or any of its elements is null |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
387 |
*/ |
4537 | 388 |
public MethodType insertParameterTypes(int num, Class<?>... ptypesToInsert) { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
389 |
int len = ptypes.length; |
4537 | 390 |
if (num < 0 || num > len) |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
391 |
throw newIndexOutOfBoundsException(num); |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
392 |
int ins = checkPtypes(ptypesToInsert); |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
393 |
checkSlotCount(parameterSlotCount() + ptypesToInsert.length + ins); |
4537 | 394 |
int ilen = ptypesToInsert.length; |
395 |
if (ilen == 0) return this; |
|
396 |
Class<?>[] nptypes = Arrays.copyOfRange(ptypes, 0, len+ilen); |
|
397 |
System.arraycopy(nptypes, num, nptypes, num+ilen, len-num); |
|
398 |
System.arraycopy(ptypesToInsert, 0, nptypes, num, ilen); |
|
399 |
return makeImpl(rtype, nptypes, true); |
|
400 |
} |
|
401 |
||
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
402 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
403 |
* Finds or creates a method type with additional parameter types. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
404 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
405 |
* @param ptypesToInsert zero or more new parameter types to insert after the end of the parameter list |
7555
a279ebc3b25c
6981777: implement JSR 292 EG adjustments from summer 2010
jrose
parents:
7052
diff
changeset
|
406 |
* @return the same type, except with the selected parameter(s) appended |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
407 |
* @throws IllegalArgumentException if any element of {@code ptypesToInsert} is {@code void.class} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
408 |
* or if the resulting method type would have more than 255 parameter slots |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
409 |
* @throws NullPointerException if {@code ptypesToInsert} or any of its elements is null |
7555
a279ebc3b25c
6981777: implement JSR 292 EG adjustments from summer 2010
jrose
parents:
7052
diff
changeset
|
410 |
*/ |
a279ebc3b25c
6981777: implement JSR 292 EG adjustments from summer 2010
jrose
parents:
7052
diff
changeset
|
411 |
public MethodType appendParameterTypes(Class<?>... ptypesToInsert) { |
a279ebc3b25c
6981777: implement JSR 292 EG adjustments from summer 2010
jrose
parents:
7052
diff
changeset
|
412 |
return insertParameterTypes(parameterCount(), ptypesToInsert); |
a279ebc3b25c
6981777: implement JSR 292 EG adjustments from summer 2010
jrose
parents:
7052
diff
changeset
|
413 |
} |
a279ebc3b25c
6981777: implement JSR 292 EG adjustments from summer 2010
jrose
parents:
7052
diff
changeset
|
414 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
415 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
416 |
* Finds or creates a method type with additional parameter types. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
417 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
418 |
* @param num the position (zero-based) of the inserted parameter type(s) |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
419 |
* @param ptypesToInsert zero or more new parameter types to insert into the parameter list |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
420 |
* @return the same type, except with the selected parameter(s) inserted |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
421 |
* @throws IndexOutOfBoundsException if {@code num} is negative or greater than {@code parameterCount()} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
422 |
* @throws IllegalArgumentException if any element of {@code ptypesToInsert} is {@code void.class} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
423 |
* or if the resulting method type would have more than 255 parameter slots |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
424 |
* @throws NullPointerException if {@code ptypesToInsert} or any of its elements is null |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
425 |
*/ |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
426 |
public MethodType insertParameterTypes(int num, List<Class<?>> ptypesToInsert) { |
9731
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
427 |
return insertParameterTypes(num, listToArray(ptypesToInsert)); |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
428 |
} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
429 |
|
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
430 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
431 |
* Finds or creates a method type with additional parameter types. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
432 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
433 |
* @param ptypesToInsert zero or more new parameter types to insert after the end of the parameter list |
7562
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
434 |
* @return the same type, except with the selected parameter(s) appended |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
435 |
* @throws IllegalArgumentException if any element of {@code ptypesToInsert} is {@code void.class} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
436 |
* or if the resulting method type would have more than 255 parameter slots |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
437 |
* @throws NullPointerException if {@code ptypesToInsert} or any of its elements is null |
7562
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
438 |
*/ |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
439 |
public MethodType appendParameterTypes(List<Class<?>> ptypesToInsert) { |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
440 |
return insertParameterTypes(parameterCount(), ptypesToInsert); |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
441 |
} |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
442 |
|
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
443 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
444 |
* Finds or creates a method type with modified parameter types. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
445 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
446 |
* @param start the position (zero-based) of the first replaced parameter type(s) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
447 |
* @param end the position (zero-based) after the last replaced parameter type(s) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
448 |
* @param ptypesToInsert zero or more new parameter types to insert into the parameter list |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
449 |
* @return the same type, except with the selected parameter(s) replaced |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
450 |
* @throws IndexOutOfBoundsException if {@code start} is negative or greater than {@code parameterCount()} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
451 |
* or if {@code end} is negative or greater than {@code parameterCount()} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
452 |
* or if {@code start} is greater than {@code end} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
453 |
* @throws IllegalArgumentException if any element of {@code ptypesToInsert} is {@code void.class} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
454 |
* or if the resulting method type would have more than 255 parameter slots |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
455 |
* @throws NullPointerException if {@code ptypesToInsert} or any of its elements is null |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
456 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
457 |
/*non-public*/ MethodType replaceParameterTypes(int start, int end, Class<?>... ptypesToInsert) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
458 |
if (start == end) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
459 |
return insertParameterTypes(start, ptypesToInsert); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
460 |
int len = ptypes.length; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
461 |
if (!(0 <= start && start <= end && end <= len)) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
462 |
throw newIndexOutOfBoundsException("start="+start+" end="+end); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
463 |
int ilen = ptypesToInsert.length; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
464 |
if (ilen == 0) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
465 |
return dropParameterTypes(start, end); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
466 |
return dropParameterTypes(start, end).insertParameterTypes(start, ptypesToInsert); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
467 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
468 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
469 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
470 |
* Finds or creates a method type with some parameter types omitted. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
471 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
4537 | 472 |
* @param start the index (zero-based) of the first parameter type to remove |
473 |
* @param end the index (greater than {@code start}) of the first parameter type after not to remove |
|
474 |
* @return the same type, except with the selected parameter(s) removed |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
475 |
* @throws IndexOutOfBoundsException if {@code start} is negative or greater than {@code parameterCount()} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
476 |
* or if {@code end} is negative or greater than {@code parameterCount()} |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
477 |
* or if {@code start} is greater than {@code end} |
4537 | 478 |
*/ |
479 |
public MethodType dropParameterTypes(int start, int end) { |
|
480 |
int len = ptypes.length; |
|
481 |
if (!(0 <= start && start <= end && end <= len)) |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
482 |
throw newIndexOutOfBoundsException("start="+start+" end="+end); |
4537 | 483 |
if (start == end) return this; |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
484 |
Class<?>[] nptypes; |
4537 | 485 |
if (start == 0) { |
486 |
if (end == len) { |
|
487 |
// drop all parameters |
|
488 |
nptypes = NO_PTYPES; |
|
489 |
} else { |
|
490 |
// drop initial parameter(s) |
|
491 |
nptypes = Arrays.copyOfRange(ptypes, end, len); |
|
492 |
} |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
493 |
} else { |
4537 | 494 |
if (end == len) { |
495 |
// drop trailing parameter(s) |
|
496 |
nptypes = Arrays.copyOfRange(ptypes, 0, start); |
|
497 |
} else { |
|
498 |
int tail = len - end; |
|
499 |
nptypes = Arrays.copyOfRange(ptypes, 0, start + tail); |
|
500 |
System.arraycopy(ptypes, end, nptypes, start, tail); |
|
501 |
} |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
502 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
503 |
return makeImpl(rtype, nptypes, true); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
504 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
505 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
506 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
507 |
* Finds or creates a method type with a different return type. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
508 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
509 |
* @param nrtype a return parameter type to replace the old one with |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
510 |
* @return the same type, except with the return type change |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
511 |
* @throws NullPointerException if {@code nrtype} is null |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
512 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
513 |
public MethodType changeReturnType(Class<?> nrtype) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
514 |
if (returnType() == nrtype) return this; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
515 |
return makeImpl(nrtype, ptypes, true); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
516 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
517 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
518 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
519 |
* Reports if this type contains a primitive argument or return value. |
4537 | 520 |
* The return type {@code void} counts as a primitive. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
521 |
* @return true if any of the types are primitives |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
522 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
523 |
public boolean hasPrimitives() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
524 |
return form.hasPrimitives(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
525 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
526 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
527 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
528 |
* Reports if this type contains a wrapper argument or return value. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
529 |
* Wrappers are types which box primitive values, such as {@link Integer}. |
9752
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
530 |
* The reference type {@code java.lang.Void} counts as a wrapper, |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
531 |
* if it occurs as a return type. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
532 |
* @return true if any of the types are wrappers |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
533 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
534 |
public boolean hasWrappers() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
535 |
return unwrap() != this; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
536 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
537 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
538 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
539 |
* Erases all reference types to {@code Object}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
540 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
4537 | 541 |
* All primitive types (including {@code void}) will remain unchanged. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
542 |
* @return a version of the original type with all reference types replaced |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
543 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
544 |
public MethodType erase() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
545 |
return form.erasedType(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
546 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
547 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
548 |
/** |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
549 |
* Erases all reference types to {@code Object}, and all subword types to {@code int}. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
550 |
* This is the reduced type polymorphism used by private methods |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
551 |
* such as {@link MethodHandle#invokeBasic invokeBasic}. |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
552 |
* @return a version of the original type with all reference and subword types replaced |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
553 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
554 |
/*non-public*/ MethodType basicType() { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
555 |
return form.basicType(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
556 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
557 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
558 |
/** |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
559 |
* @return a version of the original type with MethodHandle prepended as the first argument |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
560 |
*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
561 |
/*non-public*/ MethodType invokerType() { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
562 |
return insertParameterTypes(0, MethodHandle.class); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
563 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
564 |
|
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
565 |
/** |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
566 |
* Converts all types, both reference and primitive, to {@code Object}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
567 |
* Convenience method for {@link #genericMethodType(int) genericMethodType}. |
4537 | 568 |
* The expression {@code type.wrap().erase()} produces the same value |
569 |
* as {@code type.generic()}. |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
570 |
* @return a version of the original type with all types replaced |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
571 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
572 |
public MethodType generic() { |
4537 | 573 |
return genericMethodType(parameterCount()); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
574 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
575 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
576 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
577 |
* Converts all primitive types to their corresponding wrapper types. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
578 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
4537 | 579 |
* All reference types (including wrapper types) will remain unchanged. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
580 |
* A {@code void} return type is changed to the type {@code java.lang.Void}. |
4537 | 581 |
* The expression {@code type.wrap().erase()} produces the same value |
582 |
* as {@code type.generic()}. |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
583 |
* @return a version of the original type with all primitive types replaced |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
584 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
585 |
public MethodType wrap() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
586 |
return hasPrimitives() ? wrapWithPrims(this) : this; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
587 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
588 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
589 |
/** |
8822
8145ab9f5f86
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8821
diff
changeset
|
590 |
* Converts all wrapper types to their corresponding primitive types. |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
591 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
4537 | 592 |
* All primitive types (including {@code void}) will remain unchanged. |
2763 | 593 |
* A return type of {@code java.lang.Void} is changed to {@code void}. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
594 |
* @return a version of the original type with all wrapper types replaced |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
595 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
596 |
public MethodType unwrap() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
597 |
MethodType noprims = !hasPrimitives() ? this : wrapWithPrims(this); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
598 |
return unwrapWithNoPrims(noprims); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
599 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
600 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
601 |
private static MethodType wrapWithPrims(MethodType pt) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
602 |
assert(pt.hasPrimitives()); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
603 |
MethodType wt = pt.wrapAlt; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
604 |
if (wt == null) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
605 |
// fill in lazily |
8821
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
606 |
wt = MethodTypeForm.canonicalize(pt, MethodTypeForm.WRAP, MethodTypeForm.WRAP); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
607 |
assert(wt != null); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
608 |
pt.wrapAlt = wt; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
609 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
610 |
return wt; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
611 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
612 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
613 |
private static MethodType unwrapWithNoPrims(MethodType wt) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
614 |
assert(!wt.hasPrimitives()); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
615 |
MethodType uwt = wt.wrapAlt; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
616 |
if (uwt == null) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
617 |
// fill in lazily |
8821
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
618 |
uwt = MethodTypeForm.canonicalize(wt, MethodTypeForm.UNWRAP, MethodTypeForm.UNWRAP); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
619 |
if (uwt == null) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
620 |
uwt = wt; // type has no wrappers or prims at all |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
621 |
wt.wrapAlt = uwt; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
622 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
623 |
return uwt; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
624 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
625 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
626 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
627 |
* Returns the parameter type at the specified index, within this method type. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
628 |
* @param num the index (zero-based) of the desired parameter type |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
629 |
* @return the selected parameter type |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
630 |
* @throws IndexOutOfBoundsException if {@code num} is not a valid index into {@code parameterArray()} |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
631 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
632 |
public Class<?> parameterType(int num) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
633 |
return ptypes[num]; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
634 |
} |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
635 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
636 |
* Returns the number of parameter types in this method type. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
637 |
* @return the number of parameter types |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
638 |
*/ |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
639 |
public int parameterCount() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
640 |
return ptypes.length; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
641 |
} |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
642 |
/** |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
643 |
* Returns the return type of this method type. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
644 |
* @return the return type |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
645 |
*/ |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
646 |
public Class<?> returnType() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
647 |
return rtype; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
648 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
649 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
650 |
/** |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
651 |
* Presents the parameter types as a list (a convenience method). |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
652 |
* The list will be immutable. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
653 |
* @return the parameter types (as an immutable list) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
654 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
655 |
public List<Class<?>> parameterList() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
656 |
return Collections.unmodifiableList(Arrays.asList(ptypes)); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
657 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
658 |
|
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
659 |
/*non-public*/ Class<?> lastParameterType() { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
660 |
int len = ptypes.length; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
661 |
return len == 0 ? void.class : ptypes[len-1]; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
662 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
663 |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
664 |
/** |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
665 |
* Presents the parameter types as an array (a convenience method). |
4537 | 666 |
* Changes to the array will not result in changes to the type. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
667 |
* @return the parameter types (as a fresh copy if necessary) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
668 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
669 |
public Class<?>[] parameterArray() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
670 |
return ptypes.clone(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
671 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
672 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
673 |
/** |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
674 |
* Compares the specified object with this type for equality. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
675 |
* That is, it returns <tt>true</tt> if and only if the specified object |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
676 |
* is also a method type with exactly the same parameters and return type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
677 |
* @param x object to compare |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
678 |
* @see Object#equals(Object) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
679 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
680 |
@Override |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
681 |
public boolean equals(Object x) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
682 |
return this == x || x instanceof MethodType && equals((MethodType)x); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
683 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
684 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
685 |
private boolean equals(MethodType that) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
686 |
return this.rtype == that.rtype |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
687 |
&& Arrays.equals(this.ptypes, that.ptypes); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
688 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
689 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
690 |
/** |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
691 |
* Returns the hash code value for this method type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
692 |
* It is defined to be the same as the hashcode of a List |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
693 |
* whose elements are the return type followed by the |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
694 |
* parameter types. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
695 |
* @return the hash code value for this method type |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
696 |
* @see Object#hashCode() |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
697 |
* @see #equals(Object) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
698 |
* @see List#hashCode() |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
699 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
700 |
@Override |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
701 |
public int hashCode() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
702 |
int hashCode = 31 + rtype.hashCode(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
703 |
for (Class<?> ptype : ptypes) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
704 |
hashCode = 31*hashCode + ptype.hashCode(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
705 |
return hashCode; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
706 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
707 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
708 |
/** |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
709 |
* Returns a string representation of the method type, |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
710 |
* of the form {@code "(PT0,PT1...)RT"}. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
711 |
* The string representation of a method type is a |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
712 |
* parenthesis enclosed, comma separated list of type names, |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
713 |
* followed immediately by the return type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
714 |
* <p> |
7562
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
715 |
* Each type is represented by its |
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
716 |
* {@link java.lang.Class#getSimpleName simple name}. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
717 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
718 |
@Override |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
719 |
public String toString() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
720 |
StringBuilder sb = new StringBuilder(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
721 |
sb.append("("); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
722 |
for (int i = 0; i < ptypes.length; i++) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
723 |
if (i > 0) sb.append(","); |
7562
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
724 |
sb.append(ptypes[i].getSimpleName()); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
725 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
726 |
sb.append(")"); |
7562
a0ad195efe2c
7001424: implement JSR 292 EG adjustments, November 2010
jrose
parents:
7555
diff
changeset
|
727 |
sb.append(rtype.getSimpleName()); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
728 |
return sb.toString(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
729 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
730 |
|
9646
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
731 |
|
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
732 |
/*non-public*/ |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
733 |
boolean isViewableAs(MethodType newType) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
734 |
if (!VerifyType.isNullConversion(returnType(), newType.returnType())) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
735 |
return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
736 |
int argc = parameterCount(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
737 |
if (argc != newType.parameterCount()) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
738 |
return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
739 |
for (int i = 0; i < argc; i++) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
740 |
if (!VerifyType.isNullConversion(newType.parameterType(i), parameterType(i))) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
741 |
return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
742 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
743 |
return true; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
744 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
745 |
/*non-public*/ |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
746 |
boolean isCastableTo(MethodType newType) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
747 |
int argc = parameterCount(); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
748 |
if (argc != newType.parameterCount()) |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
749 |
return false; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
750 |
return true; |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
751 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
752 |
/*non-public*/ |
9646
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
753 |
boolean isConvertibleTo(MethodType newType) { |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
754 |
if (!canConvert(returnType(), newType.returnType())) |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
755 |
return false; |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
756 |
int argc = parameterCount(); |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
757 |
if (argc != newType.parameterCount()) |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
758 |
return false; |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
759 |
for (int i = 0; i < argc; i++) { |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
760 |
if (!canConvert(newType.parameterType(i), parameterType(i))) |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
761 |
return false; |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
762 |
} |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
763 |
return true; |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
764 |
} |
9731
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
765 |
/*non-public*/ |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
766 |
static boolean canConvert(Class<?> src, Class<?> dst) { |
9752
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
767 |
// short-circuit a few cases: |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
768 |
if (src == dst || dst == Object.class) return true; |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
769 |
// the remainder of this logic is documented in MethodHandle.asType |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
770 |
if (src.isPrimitive()) { |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
771 |
// can force void to an explicit null, a la reflect.Method.invoke |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
772 |
// can also force void to a primitive zero, by analogy |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
773 |
if (src == void.class) return true; //or !dst.isPrimitive()? |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
774 |
Wrapper sw = Wrapper.forPrimitiveType(src); |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
775 |
if (dst.isPrimitive()) { |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
776 |
// P->P must widen |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
777 |
return Wrapper.forPrimitiveType(dst).isConvertibleFrom(sw); |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
778 |
} else { |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
779 |
// P->R must box and widen |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
780 |
return dst.isAssignableFrom(sw.wrapperType()); |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
781 |
} |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
782 |
} else if (dst.isPrimitive()) { |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
783 |
// any value can be dropped |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
784 |
if (dst == void.class) return true; |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
785 |
Wrapper dw = Wrapper.forPrimitiveType(dst); |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
786 |
// R->P must be able to unbox (from a dynamically chosen type) and widen |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
787 |
// For example: |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
788 |
// Byte/Number/Comparable/Object -> dw:Byte -> byte. |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
789 |
// Character/Comparable/Object -> dw:Character -> char |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
790 |
// Boolean/Comparable/Object -> dw:Boolean -> boolean |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
791 |
// This means that dw must be cast-compatible with src. |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
792 |
if (src.isAssignableFrom(dw.wrapperType())) { |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
793 |
return true; |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
794 |
} |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
795 |
// The above does not work if the source reference is strongly typed |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
796 |
// to a wrapper whose primitive must be widened. For example: |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
797 |
// Byte -> unbox:byte -> short/int/long/float/double |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
798 |
// Character -> unbox:char -> int/long/float/double |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
799 |
if (Wrapper.isWrapperType(src) && |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
800 |
dw.isConvertibleFrom(Wrapper.forWrapperType(src))) { |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
801 |
// can unbox from src and then widen to dst |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
802 |
return true; |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
803 |
} |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
804 |
// We have already covered cases which arise due to runtime unboxing |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
805 |
// of a reference type which covers several wrapper types: |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
806 |
// Object -> cast:Integer -> unbox:int -> long/float/double |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
807 |
// Serializable -> cast:Byte -> unbox:byte -> byte/short/int/long/float/double |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
808 |
// An marginal case is Number -> dw:Character -> char, which would be OK if there were a |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
809 |
// subclass of Number which wraps a value that can convert to char. |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
810 |
// Since there is none, we don't need an extra check here to cover char or boolean. |
9646
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
811 |
return false; |
9752
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
812 |
} else { |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
813 |
// R->R always works, since null is always valid dynamically |
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
814 |
return true; |
9646
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
815 |
} |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
816 |
} |
5ebbe5ab084f
6939861: JVM should handle more conversion operations
jrose
parents:
9645
diff
changeset
|
817 |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
818 |
/// Queries which have to do with the bytecode architecture |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
819 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
820 |
/** Reports the number of JVM stack slots required to invoke a method |
8822
8145ab9f5f86
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8821
diff
changeset
|
821 |
* of this type. Note that (for historical reasons) the JVM requires |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
822 |
* a second stack slot to pass long and double arguments. |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
823 |
* So this method returns {@link #parameterCount() parameterCount} plus the |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
824 |
* number of long and double parameters (if any). |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
825 |
* <p> |
21278 | 826 |
* This method is included for the benefit of applications that must |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
827 |
* generate bytecodes that process method handles and invokedynamic. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
828 |
* @return the number of JVM stack slots for this type's parameters |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
829 |
*/ |
8821
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
830 |
/*non-public*/ int parameterSlotCount() { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
831 |
return form.parameterSlotCount(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
832 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
833 |
|
8821
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
834 |
/*non-public*/ Invokers invokers() { |
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
835 |
Invokers inv = invokers; |
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
836 |
if (inv != null) return inv; |
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
837 |
invokers = inv = new Invokers(this); |
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
838 |
return inv; |
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
839 |
} |
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
840 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
841 |
/** Reports the number of JVM stack slots which carry all parameters including and after |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
842 |
* the given position, which must be in the range of 0 to |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
843 |
* {@code parameterCount} inclusive. Successive parameters are |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
844 |
* more shallowly stacked, and parameters are indexed in the bytecodes |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
845 |
* according to their trailing edge. Thus, to obtain the depth |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
846 |
* in the outgoing call stack of parameter {@code N}, obtain |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
847 |
* the {@code parameterSlotDepth} of its trailing edge |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
848 |
* at position {@code N+1}. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
849 |
* <p> |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
850 |
* Parameters of type {@code long} and {@code double} occupy |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
851 |
* two stack slots (for historical reasons) and all others occupy one. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
852 |
* Therefore, the number returned is the number of arguments |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
853 |
* <em>including</em> and <em>after</em> the given parameter, |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
854 |
* <em>plus</em> the number of long or double arguments |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
855 |
* at or after after the argument for the given parameter. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
856 |
* <p> |
21278 | 857 |
* This method is included for the benefit of applications that must |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
858 |
* generate bytecodes that process method handles and invokedynamic. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
859 |
* @param num an index (zero-based, inclusive) within the parameter types |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
860 |
* @return the index of the (shallowest) JVM stack slot transmitting the |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
861 |
* given parameter |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
862 |
* @throws IllegalArgumentException if {@code num} is negative or greater than {@code parameterCount()} |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
863 |
*/ |
8821
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
864 |
/*non-public*/ int parameterSlotDepth(int num) { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
865 |
if (num < 0 || num > ptypes.length) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
866 |
parameterType(num); // force a range check |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
867 |
return form.parameterToArgSlot(num-1); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
868 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
869 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
870 |
/** Reports the number of JVM stack slots required to receive a return value |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
871 |
* from a method of this type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
872 |
* If the {@link #returnType() return type} is void, it will be zero, |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
873 |
* else if the return type is long or double, it will be two, else one. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
874 |
* <p> |
21278 | 875 |
* This method is included for the benefit of applications that must |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
876 |
* generate bytecodes that process method handles and invokedynamic. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
877 |
* @return the number of JVM stack slots (0, 1, or 2) for this type's return value |
8821
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
878 |
* Will be removed for PFD. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
879 |
*/ |
8821
2836ee97ee27
6839872: remove implementation inheritance from JSR 292 APIs
jrose
parents:
8348
diff
changeset
|
880 |
/*non-public*/ int returnSlotCount() { |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
881 |
return form.returnSlotCount(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
882 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
883 |
|
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
884 |
/** |
8822
8145ab9f5f86
7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents:
8821
diff
changeset
|
885 |
* Finds or creates an instance of a method type, given the spelling of its bytecode descriptor. |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
886 |
* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[]) methodType}. |
7052
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
887 |
* Any class or interface name embedded in the descriptor string |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
888 |
* will be resolved by calling {@link ClassLoader#loadClass(java.lang.String)} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
889 |
* on the given loader (or if it is null, on the system class loader). |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
890 |
* <p> |
7052
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
891 |
* Note that it is possible to encounter method types which cannot be |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
892 |
* constructed by this method, because their component types are |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
893 |
* not all reachable from a common class loader. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
894 |
* <p> |
21278 | 895 |
* This method is included for the benefit of applications that must |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
896 |
* generate bytecodes that process method handles and {@code invokedynamic}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
897 |
* @param descriptor a bytecode-level type descriptor string "(T...)T" |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
898 |
* @param loader the class loader in which to look up the types |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
899 |
* @return a method type matching the bytecode-level type descriptor |
9752
88ab34b6da6d
7032323: code changes for JSR 292 EG adjustments to API, through Public Review
jrose
parents:
9731
diff
changeset
|
900 |
* @throws NullPointerException if the string is null |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
901 |
* @throws IllegalArgumentException if the string is not well-formed |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
902 |
* @throws TypeNotPresentException if a named type cannot be found |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
903 |
*/ |
4537 | 904 |
public static MethodType fromMethodDescriptorString(String descriptor, ClassLoader loader) |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
905 |
throws IllegalArgumentException, TypeNotPresentException |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
906 |
{ |
9731
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
907 |
if (!descriptor.startsWith("(") || // also generates NPE if needed |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
908 |
descriptor.indexOf(')') < 0 || |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
909 |
descriptor.indexOf('.') >= 0) |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
910 |
throw new IllegalArgumentException("not a method descriptor: "+descriptor); |
4537 | 911 |
List<Class<?>> types = BytecodeDescriptor.parseMethod(descriptor, loader); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
912 |
Class<?> rtype = types.remove(types.size() - 1); |
9731
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
913 |
checkSlotCount(types.size()); |
d0f7a3e441c4
7044892: JSR 292: API entry points sometimes throw the wrong exceptions or doesn't throw the expected one
jrose
parents:
9646
diff
changeset
|
914 |
Class<?>[] ptypes = listToArray(types); |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
915 |
return makeImpl(rtype, ptypes, true); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
916 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
917 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
918 |
/** |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
919 |
* Produces a bytecode descriptor representation of the method type. |
7052
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
920 |
* <p> |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
921 |
* Note that this is not a strict inverse of {@link #fromMethodDescriptorString fromMethodDescriptorString}. |
7052
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
922 |
* Two distinct classes which share a common name but have different class loaders |
963a5baf2ba3
6980096: JSR 292 reflective lookup should throw checked exceptions
jrose
parents:
5725
diff
changeset
|
923 |
* will appear identical when viewed within descriptor strings. |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
924 |
* <p> |
21278 | 925 |
* This method is included for the benefit of applications that must |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
926 |
* generate bytecodes that process method handles and {@code invokedynamic}. |
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
927 |
* {@link #fromMethodDescriptorString(java.lang.String, java.lang.ClassLoader) fromMethodDescriptorString}, |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
928 |
* because the latter requires a suitable class loader argument. |
8346
3b891698c4ec
7012650: implement JSR 292 EG adjustments through January 2010
jrose
parents:
7668
diff
changeset
|
929 |
* @return the bytecode type descriptor representation |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
930 |
*/ |
4537 | 931 |
public String toMethodDescriptorString() { |
21604
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
932 |
String desc = methodDescriptor; |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
933 |
if (desc == null) { |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
934 |
desc = BytecodeDescriptor.unparse(this); |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
935 |
methodDescriptor = desc; |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
936 |
} |
2ad6b165b7d8
8024635: Caching MethodType's descriptor string improves lambda linkage performance
jrose
parents:
20877
diff
changeset
|
937 |
return desc; |
4537 | 938 |
} |
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
939 |
|
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
940 |
/*non-public*/ static String toFieldDescriptorString(Class<?> cls) { |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
941 |
return BytecodeDescriptor.unparse(cls); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
942 |
} |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
943 |
|
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
944 |
/// Serialization. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
945 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
946 |
/** |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
947 |
* There are no serializable fields for {@code MethodType}. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
948 |
*/ |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
949 |
private static final java.io.ObjectStreamField[] serialPersistentFields = { }; |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
950 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
951 |
/** |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
952 |
* Save the {@code MethodType} instance to a stream. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
953 |
* |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
954 |
* @serialData |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
955 |
* For portability, the serialized format does not refer to named fields. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
956 |
* Instead, the return type and parameter type arrays are written directly |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
957 |
* from the {@code writeObject} method, using two calls to {@code s.writeObject} |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
958 |
* as follows: |
20535
cc85c8626435
8024438: JSR 292 API specification maintenance for JDK 8
jrose
parents:
20494
diff
changeset
|
959 |
* <blockquote><pre>{@code |
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
960 |
s.writeObject(this.returnType()); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
961 |
s.writeObject(this.parameterArray()); |
20535
cc85c8626435
8024438: JSR 292 API specification maintenance for JDK 8
jrose
parents:
20494
diff
changeset
|
962 |
* }</pre></blockquote> |
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
963 |
* <p> |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
964 |
* The deserialized field values are checked as if they were |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
965 |
* provided to the factory method {@link #methodType(Class,Class[]) methodType}. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
966 |
* For example, null values, or {@code void} parameter types, |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
967 |
* will lead to exceptions during deserialization. |
18569 | 968 |
* @param s the stream to write the object to |
969 |
* @throws java.io.IOException if there is a problem writing the object |
|
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
970 |
*/ |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
971 |
private void writeObject(java.io.ObjectOutputStream s) throws java.io.IOException { |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
972 |
s.defaultWriteObject(); // requires serialPersistentFields to be an empty array |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
973 |
s.writeObject(returnType()); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
974 |
s.writeObject(parameterArray()); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
975 |
} |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
976 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
977 |
/** |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
978 |
* Reconstitute the {@code MethodType} instance from a stream (that is, |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
979 |
* deserialize it). |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
980 |
* This instance is a scratch object with bogus final fields. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
981 |
* It provides the parameters to the factory method called by |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
982 |
* {@link #readResolve readResolve}. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
983 |
* After that call it is discarded. |
18569 | 984 |
* @param s the stream to read the object from |
985 |
* @throws java.io.IOException if there is a problem reading the object |
|
986 |
* @throws ClassNotFoundException if one of the component classes cannot be resolved |
|
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
987 |
* @see #MethodType() |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
988 |
* @see #readResolve |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
989 |
* @see #writeObject |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
990 |
*/ |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
991 |
private void readObject(java.io.ObjectInputStream s) throws java.io.IOException, ClassNotFoundException { |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
992 |
s.defaultReadObject(); // requires serialPersistentFields to be an empty array |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
993 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
994 |
Class<?> returnType = (Class<?>) s.readObject(); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
995 |
Class<?>[] parameterArray = (Class<?>[]) s.readObject(); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
996 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
997 |
// Probably this object will never escape, but let's check |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
998 |
// the field values now, just to be sure. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
999 |
checkRtype(returnType); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1000 |
checkPtypes(parameterArray); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1001 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1002 |
parameterArray = parameterArray.clone(); // make sure it is unshared |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1003 |
MethodType_init(returnType, parameterArray); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1004 |
} |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1005 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1006 |
/** |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1007 |
* For serialization only. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1008 |
* Sets the final fields to null, pending {@code Unsafe.putObject}. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1009 |
*/ |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1010 |
private MethodType() { |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1011 |
this.rtype = null; |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1012 |
this.ptypes = null; |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1013 |
} |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1014 |
private void MethodType_init(Class<?> rtype, Class<?>[] ptypes) { |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1015 |
// In order to communicate these values to readResolve, we must |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1016 |
// store them into the implementation-specific final fields. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1017 |
checkRtype(rtype); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1018 |
checkPtypes(ptypes); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
1019 |
UNSAFE.putObject(this, rtypeOffset, rtype); |
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
1020 |
UNSAFE.putObject(this, ptypesOffset, ptypes); |
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1021 |
} |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1022 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1023 |
// Support for resetting final fields while deserializing |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1024 |
private static final long rtypeOffset, ptypesOffset; |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1025 |
static { |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1026 |
try { |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
1027 |
rtypeOffset = UNSAFE.objectFieldOffset |
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1028 |
(MethodType.class.getDeclaredField("rtype")); |
13423
17843fff200d
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
13422
diff
changeset
|
1029 |
ptypesOffset = UNSAFE.objectFieldOffset |
8348
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1030 |
(MethodType.class.getDeclaredField("ptypes")); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1031 |
} catch (Exception ex) { |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1032 |
throw new Error(ex); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1033 |
} |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1034 |
} |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1035 |
|
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1036 |
/** |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1037 |
* Resolves and initializes a {@code MethodType} object |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1038 |
* after serialization. |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1039 |
* @return the fully initialized {@code MethodType} object |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1040 |
*/ |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1041 |
private Object readResolve() { |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1042 |
// Do not use a trusted path for deserialization: |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1043 |
//return makeImpl(rtype, ptypes, true); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1044 |
// Verify all operands, and make sure ptypes is unshared: |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1045 |
return methodType(rtype, ptypes); |
3b2ac15dfc16
7016261: JSR 292 MethodType objects should be serializable
jrose
parents:
8346
diff
changeset
|
1046 |
} |
13422 | 1047 |
|
1048 |
/** |
|
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1049 |
* Simple implementation of weak concurrent intern set. |
13422 | 1050 |
* |
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1051 |
* @param <T> interned type |
13422 | 1052 |
*/ |
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1053 |
private static class ConcurrentWeakInternSet<T> { |
13422 | 1054 |
|
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1055 |
private final ConcurrentMap<WeakEntry<T>, WeakEntry<T>> map; |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1056 |
private final ReferenceQueue<T> stale; |
13422 | 1057 |
|
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1058 |
public ConcurrentWeakInternSet() { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1059 |
this.map = new ConcurrentHashMap<>(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1060 |
this.stale = new ReferenceQueue<>(); |
13422 | 1061 |
} |
1062 |
||
1063 |
/** |
|
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1064 |
* Get the existing interned element. |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1065 |
* This method returns null if no element is interned. |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1066 |
* |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1067 |
* @param elem element to look up |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1068 |
* @return the interned element |
13422 | 1069 |
*/ |
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1070 |
public T get(T elem) { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1071 |
if (elem == null) throw new NullPointerException(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1072 |
expungeStaleElements(); |
13422 | 1073 |
|
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1074 |
WeakEntry<T> value = map.get(new WeakEntry<>(elem)); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1075 |
if (value != null) { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1076 |
T res = value.get(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1077 |
if (res != null) { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1078 |
return res; |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1079 |
} |
13422 | 1080 |
} |
1081 |
return null; |
|
1082 |
} |
|
1083 |
||
1084 |
/** |
|
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1085 |
* Interns the element. |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1086 |
* Always returns non-null element, matching the one in the intern set. |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1087 |
* Under the race against another add(), it can return <i>different</i> |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1088 |
* element, if another thread beats us to interning it. |
13422 | 1089 |
* |
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1090 |
* @param elem element to add |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1091 |
* @return element that was actually added |
13422 | 1092 |
*/ |
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1093 |
public T add(T elem) { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1094 |
if (elem == null) throw new NullPointerException(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1095 |
|
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1096 |
// Playing double race here, and so spinloop is required. |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1097 |
// First race is with two concurrent updaters. |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1098 |
// Second race is with GC purging weak ref under our feet. |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1099 |
// Hopefully, we almost always end up with a single pass. |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1100 |
T interned; |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1101 |
WeakEntry<T> e = new WeakEntry<>(elem, stale); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1102 |
do { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1103 |
expungeStaleElements(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1104 |
WeakEntry<T> exist = map.putIfAbsent(e, e); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1105 |
interned = (exist == null) ? elem : exist.get(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1106 |
} while (interned == null); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1107 |
return interned; |
13422 | 1108 |
} |
1109 |
||
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1110 |
private void expungeStaleElements() { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1111 |
Reference<? extends T> reference; |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1112 |
while ((reference = stale.poll()) != null) { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1113 |
map.remove(reference); |
13422 | 1114 |
} |
1115 |
} |
|
1116 |
||
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1117 |
private static class WeakEntry<T> extends WeakReference<T> { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1118 |
|
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1119 |
public final int hashcode; |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1120 |
|
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1121 |
public WeakEntry(T key, ReferenceQueue<T> queue) { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1122 |
super(key, queue); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1123 |
hashcode = key.hashCode(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1124 |
} |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1125 |
|
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1126 |
public WeakEntry(T key) { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1127 |
super(key); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1128 |
hashcode = key.hashCode(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1129 |
} |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1130 |
|
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1131 |
@Override |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1132 |
public boolean equals(Object obj) { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1133 |
if (obj instanceof WeakEntry) { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1134 |
Object that = ((WeakEntry) obj).get(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1135 |
Object mine = get(); |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1136 |
return (that == null || mine == null) ? (this == obj) : mine.equals(that); |
13422 | 1137 |
} |
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1138 |
return false; |
13422 | 1139 |
} |
1140 |
||
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1141 |
@Override |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1142 |
public int hashCode() { |
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1143 |
return hashcode; |
13422 | 1144 |
} |
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1145 |
|
13422 | 1146 |
} |
1147 |
} |
|
18180
e0b8c923f35d
7177472: JSR292: MethodType interning penalizes scalability
twisti
parents:
13610
diff
changeset
|
1148 |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
1149 |
} |