author | jrose |
Fri, 30 Apr 2010 23:48:23 -0700 | |
changeset 5722 | 4ada807383c8 |
parent 4537 | 7c3c7f8d5195 |
child 5725 | 16c1792b2ee6 |
permissions | -rw-r--r-- |
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/* |
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* Copyright 2008-2009 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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package java.dyn; |
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|
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import java.util.Arrays; |
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import java.util.Collections; |
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import java.util.HashMap; |
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import java.util.List; |
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import sun.dyn.Access; |
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import sun.dyn.Invokers; |
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import sun.dyn.MethodTypeImpl; |
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import sun.dyn.util.BytecodeDescriptor; |
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import static sun.dyn.MemberName.newIllegalArgumentException; |
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|
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/** |
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* A method type represents the arguments and return type accepted and |
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* returned by a method handle, or the arguments and return type passed |
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* and expected by a method handle caller. Method types must be properly |
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* matched between a method handle and all its callers, |
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* and the JVM's operations enforce this matching at all times. |
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* <p> |
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* The structure is a return type accompanied by any number of parameter types. |
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* The types (primitive, void, and reference) are represented by Class objects. |
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* <p> |
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* All instances of <code>MethodType</code> are immutable. |
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* Two instances are completely interchangeable if they compare equal. |
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* Equality depends on pairwise correspondence of the return and parameter types and on nothing else. |
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* <p> |
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* This type can be created only by factory methods. |
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* All factory methods may cache values, though caching is not guaranteed. |
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* <p> |
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* Note: Like classes and strings, method types can be represented directly |
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* as constants to be loaded by {@code ldc} bytecodes. |
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* @author John Rose, JSR 292 EG |
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*/ |
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public final |
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class MethodType { |
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private final Class<?> rtype; |
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private final Class<?>[] ptypes; |
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private MethodTypeForm form; // erased form, plus cached data about primitives |
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private MethodType wrapAlt; // alternative wrapped/unwrapped version |
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private Invokers invokers; // cache of handy higher-order adapters |
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private static final Access IMPL_TOKEN = Access.getToken(); |
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// share a cache with a friend in this package |
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Invokers getInvokers() { return invokers; } |
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void setInvokers(Invokers inv) { invokers = inv; } |
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static { |
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// This hack allows the implementation package special access to |
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// the internals of MethodType. In particular, the MTImpl has all sorts |
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// of cached information useful to the implementation code. |
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MethodTypeImpl.setMethodTypeFriend(IMPL_TOKEN, new MethodTypeImpl.MethodTypeFriend() { |
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public Class<?>[] ptypes(MethodType mt) { return mt.ptypes; } |
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public MethodTypeImpl form(MethodType mt) { return mt.form; } |
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public void setForm(MethodType mt, MethodTypeImpl form) { |
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assert(mt.form == null); |
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mt.form = (MethodTypeForm) form; |
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} |
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public MethodType makeImpl(Class<?> rtype, Class<?>[] ptypes, boolean trusted) { |
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return MethodType.makeImpl(rtype, ptypes, trusted); |
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} |
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public MethodTypeImpl newMethodTypeForm(MethodType mt) { |
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return new MethodTypeForm(mt); |
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} |
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public Invokers getInvokers(MethodType mt) { return mt.invokers; } |
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public void setInvokers(MethodType mt, Invokers inv) { mt.invokers = inv; } |
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}); |
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} |
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private MethodType(Class<?> rtype, Class<?>[] ptypes) { |
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checkRtype(rtype); |
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checkPtypes(ptypes); |
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this.rtype = rtype; |
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this.ptypes = ptypes; |
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} |
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private void checkRtype(Class<?> rtype) { |
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rtype.equals(rtype); // null check |
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} |
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private void checkPtypes(Class<?>[] ptypes) { |
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for (Class<?> ptype : ptypes) { |
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ptype.equals(ptype); // null check |
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if (ptype == void.class) |
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throw newIllegalArgumentException("void parameter: "+this); |
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} |
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} |
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static final HashMap<MethodType,MethodType> internTable |
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= new HashMap<MethodType, MethodType>(); |
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static final Class<?>[] NO_PTYPES = {}; |
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/** Find or create an instance of the given method type. |
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* @param rtype the return type |
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* @param ptypes the parameter types |
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* @return a method type with the given parts |
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* @throws NullPointerException if rtype or any ptype is null |
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* @throws IllegalArgumentException if any of the ptypes is void |
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*/ |
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public static |
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MethodType methodType(Class<?> rtype, Class<?>[] ptypes) { |
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return makeImpl(rtype, ptypes, false); |
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} |
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@Deprecated public static |
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MethodType make(Class<?> rtype, Class<?>[] ptypes) { |
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return methodType(rtype, ptypes); |
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} |
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/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. */ |
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public static |
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MethodType methodType(Class<?> rtype, List<? extends Class<?>> ptypes) { |
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boolean notrust = false; // random List impl. could return evil ptypes array |
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return makeImpl(rtype, ptypes.toArray(NO_PTYPES), notrust); |
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} |
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@Deprecated public static |
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MethodType make(Class<?> rtype, List<? extends Class<?>> ptypes) { |
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return methodType(rtype, ptypes); |
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} |
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/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
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* The leading parameter type is prepended to the remaining array. |
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*/ |
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public static |
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MethodType methodType(Class<?> rtype, Class<?> ptype0, Class<?>... ptypes) { |
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Class<?>[] ptypes1 = new Class<?>[1+ptypes.length]; |
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ptypes1[0] = ptype0; |
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System.arraycopy(ptypes, 0, ptypes1, 1, ptypes.length); |
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return makeImpl(rtype, ptypes1, true); |
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} |
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@Deprecated public static |
156 |
MethodType make(Class<?> rtype, Class<?> ptype0, Class<?>... ptypes) { |
|
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return methodType(rtype, ptype0, ptypes); |
|
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} |
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/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
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* The resulting method has no parameter types. |
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*/ |
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public static |
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MethodType methodType(Class<?> rtype) { |
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return makeImpl(rtype, NO_PTYPES, true); |
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} |
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@Deprecated public static |
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MethodType make(Class<?> rtype) { |
|
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return methodType(rtype); |
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} |
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|
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/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
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* The resulting method has the single given parameter type. |
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*/ |
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public static |
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MethodType methodType(Class<?> rtype, Class<?> ptype0) { |
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return makeImpl(rtype, new Class<?>[]{ ptype0 }, true); |
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} |
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@Deprecated public static |
180 |
MethodType make(Class<?> rtype, Class<?> ptype0) { |
|
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return methodType(rtype, ptype0); |
|
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} |
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|
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/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
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* The resulting method has the same parameter types as {@code ptypes}, |
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* and the specified return type. |
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*/ |
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public static |
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MethodType methodType(Class<?> rtype, MethodType ptypes) { |
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return makeImpl(rtype, ptypes.ptypes, true); |
|
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} |
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@Deprecated public static |
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MethodType make(Class<?> rtype, MethodType ptypes) { |
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return methodType(rtype, ptypes); |
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} |
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|
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/** |
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* Sole factory method to find or create an interned method type. |
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* @param rtype desired return type |
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* @param ptypes desired parameter types |
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* @param trusted whether the ptypes can be used without cloning |
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* @return the unique method type of the desired structure |
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*/ |
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private static |
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MethodType makeImpl(Class<?> rtype, Class<?>[] ptypes, boolean trusted) { |
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if (ptypes == null || ptypes.length == 0) { |
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ptypes = NO_PTYPES; trusted = true; |
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} |
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MethodType mt1 = new MethodType(rtype, ptypes); |
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MethodType mt0; |
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synchronized (internTable) { |
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mt0 = internTable.get(mt1); |
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if (mt0 != null) |
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return mt0; |
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} |
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if (!trusted) |
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// defensively copy the array passed in by the user |
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mt1 = new MethodType(rtype, ptypes.clone()); |
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// promote the object to the Real Thing, and reprobe |
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MethodTypeImpl.initForm(IMPL_TOKEN, mt1); |
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synchronized (internTable) { |
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mt0 = internTable.get(mt1); |
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if (mt0 != null) |
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return mt0; |
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internTable.put(mt1, mt1); |
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} |
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return mt1; |
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} |
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|
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// Entry point from JVM. TODO: Change the name & signature. |
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private static MethodType makeImpl(Class<?> rtype, Class<?>[] ptypes, |
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boolean ignore1, boolean ignore2) { |
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return makeImpl(rtype, ptypes, true); |
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} |
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|
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private static final MethodType[] objectOnlyTypes = new MethodType[20]; |
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|
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/** |
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* Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
240 |
* All parameters and the return type will be {@code Object}, |
|
241 |
* except the final varargs parameter if any, which will be {@code Object[]}. |
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* @param objectArgCount number of parameters (excluding the varargs parameter if any) |
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* @param varargs whether there will be a varargs parameter, of type {@code Object[]} |
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* @return a totally generic method type, given only its count of parameters and varargs |
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* @see #genericMethodType(int) |
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*/ |
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public static |
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MethodType genericMethodType(int objectArgCount, boolean varargs) { |
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MethodType mt; |
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int ivarargs = (!varargs ? 0 : 1); |
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int ootIndex = objectArgCount*2 + ivarargs; |
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if (ootIndex < objectOnlyTypes.length) { |
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mt = objectOnlyTypes[ootIndex]; |
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if (mt != null) return mt; |
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} |
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Class<?>[] ptypes = new Class<?>[objectArgCount + ivarargs]; |
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Arrays.fill(ptypes, Object.class); |
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if (ivarargs != 0) ptypes[objectArgCount] = Object[].class; |
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mt = makeImpl(Object.class, ptypes, true); |
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if (ootIndex < objectOnlyTypes.length) { |
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objectOnlyTypes[ootIndex] = mt; // cache it here also! |
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} |
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return mt; |
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264 |
} |
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@Deprecated public static |
266 |
MethodType makeGeneric(int objectArgCount, boolean varargs) { |
|
267 |
return genericMethodType(objectArgCount, varargs); |
|
268 |
} |
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|
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/** |
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* All parameters and the return type will be Object. |
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* @param objectArgCount number of parameters |
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* @return a totally generic method type, given only its count of parameters |
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* @see #genericMethodType(int, boolean) |
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*/ |
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public static |
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MethodType genericMethodType(int objectArgCount) { |
278 |
return genericMethodType(objectArgCount, false); |
|
279 |
} |
|
280 |
@Deprecated public static |
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MethodType makeGeneric(int objectArgCount) { |
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return genericMethodType(objectArgCount); |
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} |
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284 |
|
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/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
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* @param num the index (zero-based) of the parameter type to change |
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* @param nptype a new parameter type to replace the old one with |
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* @return the same type, except with the selected parameter changed |
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*/ |
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public MethodType changeParameterType(int num, Class<?> nptype) { |
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if (parameterType(num) == nptype) return this; |
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Class<?>[] nptypes = ptypes.clone(); |
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nptypes[num] = nptype; |
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return makeImpl(rtype, nptypes, true); |
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} |
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296 |
|
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/** Convenience method for {@link #insertParameterTypes}. |
298 |
* @deprecated Use {@link #insertParameterTypes} instead. |
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*/ |
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@Deprecated |
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public MethodType insertParameterType(int num, Class<?> nptype) { |
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int len = ptypes.length; |
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Class<?>[] nptypes = Arrays.copyOfRange(ptypes, 0, len+1); |
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System.arraycopy(nptypes, num, nptypes, num+1, len-num); |
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nptypes[num] = nptype; |
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return makeImpl(rtype, nptypes, true); |
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307 |
} |
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308 |
|
4537 | 309 |
/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
310 |
* @param num the position (zero-based) of the inserted parameter type(s) |
|
311 |
* @param ptypesToInsert zero or more a new parameter types to insert into the parameter list |
|
312 |
* @return the same type, except with the selected parameter(s) inserted |
|
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*/ |
4537 | 314 |
public MethodType insertParameterTypes(int num, Class<?>... ptypesToInsert) { |
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int len = ptypes.length; |
4537 | 316 |
if (num < 0 || num > len) |
317 |
throw newIllegalArgumentException("num="+num); //SPECME |
|
318 |
int ilen = ptypesToInsert.length; |
|
319 |
if (ilen == 0) return this; |
|
320 |
Class<?>[] nptypes = Arrays.copyOfRange(ptypes, 0, len+ilen); |
|
321 |
System.arraycopy(nptypes, num, nptypes, num+ilen, len-num); |
|
322 |
System.arraycopy(ptypesToInsert, 0, nptypes, num, ilen); |
|
323 |
return makeImpl(rtype, nptypes, true); |
|
324 |
} |
|
325 |
||
326 |
/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
|
327 |
* @param num the position (zero-based) of the inserted parameter type(s) |
|
328 |
* @param ptypesToInsert zero or more a new parameter types to insert into the parameter list |
|
329 |
* @return the same type, except with the selected parameter(s) inserted |
|
330 |
*/ |
|
331 |
public MethodType insertParameterTypes(int num, List<Class<?>> ptypesToInsert) { |
|
332 |
return insertParameterTypes(num, ptypesToInsert.toArray(NO_PTYPES)); |
|
333 |
} |
|
334 |
||
335 |
/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
|
336 |
* @param start the index (zero-based) of the first parameter type to remove |
|
337 |
* @param end the index (greater than {@code start}) of the first parameter type after not to remove |
|
338 |
* @return the same type, except with the selected parameter(s) removed |
|
339 |
*/ |
|
340 |
public MethodType dropParameterTypes(int start, int end) { |
|
341 |
int len = ptypes.length; |
|
342 |
if (!(0 <= start && start <= end && end <= len)) |
|
343 |
throw newIllegalArgumentException("start="+start+" end="+end); //SPECME |
|
344 |
if (start == end) return this; |
|
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345 |
Class<?>[] nptypes; |
4537 | 346 |
if (start == 0) { |
347 |
if (end == len) { |
|
348 |
// drop all parameters |
|
349 |
nptypes = NO_PTYPES; |
|
350 |
} else { |
|
351 |
// drop initial parameter(s) |
|
352 |
nptypes = Arrays.copyOfRange(ptypes, end, len); |
|
353 |
} |
|
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354 |
} else { |
4537 | 355 |
if (end == len) { |
356 |
// drop trailing parameter(s) |
|
357 |
nptypes = Arrays.copyOfRange(ptypes, 0, start); |
|
358 |
} else { |
|
359 |
int tail = len - end; |
|
360 |
nptypes = Arrays.copyOfRange(ptypes, 0, start + tail); |
|
361 |
System.arraycopy(ptypes, end, nptypes, start, tail); |
|
362 |
} |
|
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363 |
} |
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364 |
return makeImpl(rtype, nptypes, true); |
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365 |
} |
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366 |
|
4537 | 367 |
/** Convenience method for {@link #dropParameterTypes}. |
368 |
* @deprecated Use {@link #dropParameterTypes} instead. |
|
369 |
*/ |
|
370 |
@Deprecated |
|
371 |
public MethodType dropParameterType(int num) { |
|
372 |
return dropParameterTypes(num, num+1); |
|
373 |
} |
|
374 |
||
375 |
/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
|
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* @param nrtype a return parameter type to replace the old one with |
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377 |
* @return the same type, except with the return type change |
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378 |
*/ |
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|
379 |
public MethodType changeReturnType(Class<?> nrtype) { |
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380 |
if (returnType() == nrtype) return this; |
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381 |
return makeImpl(nrtype, ptypes, true); |
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382 |
} |
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|
383 |
|
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|
384 |
/** Convenience method. |
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385 |
* Report if this type contains a primitive argument or return value. |
4537 | 386 |
* The return type {@code void} counts as a primitive. |
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387 |
* @return true if any of the types are primitives |
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|
388 |
*/ |
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|
389 |
public boolean hasPrimitives() { |
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|
390 |
return form.hasPrimitives(); |
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|
391 |
} |
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|
392 |
|
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|
393 |
/** Convenience method. |
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|
394 |
* Report if this type contains a wrapper argument or return value. |
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|
395 |
* Wrappers are types which box primitive values, such as {@link Integer}. |
4537 | 396 |
* The reference type {@code java.lang.Void} counts as a wrapper. |
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397 |
* @return true if any of the types are wrappers |
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|
398 |
*/ |
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|
399 |
public boolean hasWrappers() { |
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|
400 |
return unwrap() != this; |
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|
401 |
} |
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|
402 |
|
4537 | 403 |
/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
404 |
* Erase all reference types to {@code Object}. |
|
405 |
* All primitive types (including {@code void}) will remain unchanged. |
|
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|
406 |
* @return a version of the original type with all reference types replaced |
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|
407 |
*/ |
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|
408 |
public MethodType erase() { |
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|
409 |
return form.erasedType(); |
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|
410 |
} |
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|
411 |
|
4537 | 412 |
/** Convenience method for {@link #genericMethodType(int)}. |
413 |
* Convert all types, both reference and primitive, to {@code Object}. |
|
414 |
* The expression {@code type.wrap().erase()} produces the same value |
|
415 |
* as {@code type.generic()}. |
|
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|
416 |
* @return a version of the original type with all types replaced |
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|
417 |
*/ |
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|
418 |
public MethodType generic() { |
4537 | 419 |
return genericMethodType(parameterCount()); |
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|
420 |
} |
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|
421 |
|
4537 | 422 |
/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
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|
423 |
* Convert all primitive types to their corresponding wrapper types. |
4537 | 424 |
* All reference types (including wrapper types) will remain unchanged. |
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|
425 |
* A {@code void} return type is changed to the type {@code java.lang.Void}. |
4537 | 426 |
* The expression {@code type.wrap().erase()} produces the same value |
427 |
* as {@code type.generic()}. |
|
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|
428 |
* @return a version of the original type with all primitive types replaced |
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|
429 |
*/ |
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|
430 |
public MethodType wrap() { |
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|
431 |
return hasPrimitives() ? wrapWithPrims(this) : this; |
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|
432 |
} |
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|
433 |
|
4537 | 434 |
/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
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|
435 |
* Convert all wrapper types to their corresponding primitive types. |
4537 | 436 |
* All primitive types (including {@code void}) will remain unchanged. |
2763 | 437 |
* A return type of {@code java.lang.Void} is changed to {@code void}. |
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|
438 |
* @return a version of the original type with all wrapper types replaced |
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changeset
|
439 |
*/ |
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|
440 |
public MethodType unwrap() { |
5a17df307cbc
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|
441 |
MethodType noprims = !hasPrimitives() ? this : wrapWithPrims(this); |
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diff
changeset
|
442 |
return unwrapWithNoPrims(noprims); |
5a17df307cbc
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jrose
parents:
diff
changeset
|
443 |
} |
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jrose
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changeset
|
444 |
|
5a17df307cbc
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|
445 |
private static MethodType wrapWithPrims(MethodType pt) { |
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|
446 |
assert(pt.hasPrimitives()); |
5a17df307cbc
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changeset
|
447 |
MethodType wt = pt.wrapAlt; |
5a17df307cbc
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jrose
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diff
changeset
|
448 |
if (wt == null) { |
5a17df307cbc
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parents:
diff
changeset
|
449 |
// fill in lazily |
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|
450 |
wt = MethodTypeImpl.canonicalize(pt, MethodTypeImpl.WRAP, MethodTypeImpl.WRAP); |
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|
451 |
assert(wt != null); |
5a17df307cbc
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jrose
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diff
changeset
|
452 |
pt.wrapAlt = wt; |
5a17df307cbc
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jrose
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diff
changeset
|
453 |
} |
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|
454 |
return wt; |
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diff
changeset
|
455 |
} |
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|
456 |
|
5a17df307cbc
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|
457 |
private static MethodType unwrapWithNoPrims(MethodType wt) { |
5a17df307cbc
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|
458 |
assert(!wt.hasPrimitives()); |
5a17df307cbc
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jrose
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diff
changeset
|
459 |
MethodType uwt = wt.wrapAlt; |
5a17df307cbc
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diff
changeset
|
460 |
if (uwt == null) { |
5a17df307cbc
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diff
changeset
|
461 |
// fill in lazily |
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diff
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|
462 |
uwt = MethodTypeImpl.canonicalize(wt, MethodTypeImpl.UNWRAP, MethodTypeImpl.UNWRAP); |
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|
463 |
if (uwt == null) |
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diff
changeset
|
464 |
uwt = wt; // type has no wrappers or prims at all |
5a17df307cbc
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diff
changeset
|
465 |
wt.wrapAlt = uwt; |
5a17df307cbc
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jrose
parents:
diff
changeset
|
466 |
} |
5a17df307cbc
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parents:
diff
changeset
|
467 |
return uwt; |
5a17df307cbc
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jrose
parents:
diff
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|
468 |
} |
5a17df307cbc
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diff
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|
469 |
|
5a17df307cbc
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|
470 |
/** @param num the index (zero-based) of the desired parameter type |
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|
471 |
* @return the selected parameter type |
5a17df307cbc
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|
472 |
*/ |
5a17df307cbc
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|
473 |
public Class<?> parameterType(int num) { |
5a17df307cbc
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diff
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|
474 |
return ptypes[num]; |
5a17df307cbc
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diff
changeset
|
475 |
} |
5a17df307cbc
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|
476 |
/** @return the number of parameter types */ |
5a17df307cbc
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|
477 |
public int parameterCount() { |
5a17df307cbc
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diff
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|
478 |
return ptypes.length; |
5a17df307cbc
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jrose
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diff
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|
479 |
} |
5a17df307cbc
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|
480 |
/** @return the return type */ |
5a17df307cbc
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|
481 |
public Class<?> returnType() { |
5a17df307cbc
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|
482 |
return rtype; |
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diff
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|
483 |
} |
5a17df307cbc
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|
484 |
|
5a17df307cbc
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|
485 |
/** |
5a17df307cbc
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|
486 |
* Convenience method to present the arguments as a list. |
5a17df307cbc
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diff
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|
487 |
* @return the parameter types (as an immutable list) |
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|
488 |
*/ |
5a17df307cbc
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|
489 |
public List<Class<?>> parameterList() { |
5a17df307cbc
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|
490 |
return Collections.unmodifiableList(Arrays.asList(ptypes)); |
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|
491 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
492 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
493 |
/** |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
494 |
* Convenience method to present the arguments as an array. |
4537 | 495 |
* 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
|
496 |
* @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
|
497 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
498 |
public Class<?>[] parameterArray() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
499 |
return ptypes.clone(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
500 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
501 |
|
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 |
* Compares the specified object with this type for equality. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
504 |
* 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
|
505 |
* 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
|
506 |
* @param x object to compare |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
507 |
* @see Object#equals(Object) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
508 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
509 |
@Override |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
510 |
public boolean equals(Object x) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
511 |
return this == x || x instanceof MethodType && equals((MethodType)x); |
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 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
514 |
private boolean equals(MethodType that) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
515 |
return this.rtype == that.rtype |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
516 |
&& Arrays.equals(this.ptypes, that.ptypes); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
517 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
518 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
519 |
/** |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
520 |
* Returns the hash code value for this method type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
521 |
* 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
|
522 |
* whose elements are the return type followed by the |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
523 |
* parameter types. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
524 |
* @return the hash code value for this method type |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
525 |
* @see Object#hashCode() |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
526 |
* @see #equals(Object) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
527 |
* @see List#hashCode() |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
528 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
529 |
@Override |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
530 |
public int hashCode() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
531 |
int hashCode = 31 + rtype.hashCode(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
532 |
for (Class<?> ptype : ptypes) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
533 |
hashCode = 31*hashCode + ptype.hashCode(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
534 |
return hashCode; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
535 |
} |
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 |
/** |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
538 |
* The string representation of a method type is a |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
539 |
* parenthesis enclosed, comma separated list of type names, |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
540 |
* followed immediately by the return type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
541 |
* <p> |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
542 |
* If a type name is array, it the base type followed |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
543 |
* by [], rather than the Class.getName of the array type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
544 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
545 |
@Override |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
546 |
public String toString() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
547 |
StringBuilder sb = new StringBuilder(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
548 |
sb.append("("); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
549 |
for (int i = 0; i < ptypes.length; i++) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
550 |
if (i > 0) sb.append(","); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
551 |
putName(sb, ptypes[i]); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
552 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
553 |
sb.append(")"); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
554 |
putName(sb, rtype); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
555 |
return sb.toString(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
556 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
557 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
558 |
static void putName(StringBuilder sb, Class<?> cls) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
559 |
int brackets = 0; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
560 |
while (cls.isArray()) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
561 |
cls = cls.getComponentType(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
562 |
brackets++; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
563 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
564 |
String n = cls.getName(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
565 |
/* |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
566 |
if (n.startsWith("java.lang.")) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
567 |
String nb = n.substring("java.lang.".length()); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
568 |
if (nb.indexOf('.') < 0) n = nb; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
569 |
} else if (n.indexOf('.') < 0) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
570 |
n = "."+n; // anonymous package |
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 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
573 |
sb.append(n); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
574 |
while (brackets > 0) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
575 |
sb.append("[]"); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
576 |
brackets--; |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
577 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
578 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
579 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
580 |
/// Queries which have to do with the bytecode architecture |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
581 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
582 |
/** The number of JVM stack slots required to invoke a method |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
583 |
* of this type. Note that (for historic reasons) the JVM requires |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
584 |
* a second stack slot to pass long and double arguments. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
585 |
* So this method returns {@link #parameterCount()} plus the |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
586 |
* number of long and double parameters (if any). |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
587 |
* <p> |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
588 |
* This method is included for the benfit of applications that must |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
589 |
* generate bytecodes that process method handles and invokedynamic. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
590 |
* @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
|
591 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
592 |
public int parameterSlotCount() { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
593 |
return form.parameterSlotCount(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
594 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
595 |
|
4537 | 596 |
/** 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
|
597 |
* 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
|
598 |
* {@code parameterCount} inclusive. Successive parameters are |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
599 |
* 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
|
600 |
* 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
|
601 |
* 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
|
602 |
* the {@code parameterSlotDepth} of its trailing edge |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
603 |
* at position {@code N+1}. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
604 |
* <p> |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
605 |
* Parameters of type {@code long} and {@code double} occupy |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
606 |
* 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
|
607 |
* Therefore, the number returned is the number of arguments |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
608 |
* <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
|
609 |
* <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
|
610 |
* 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
|
611 |
* <p> |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
612 |
* This method is included for the benfit of applications that must |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
613 |
* generate bytecodes that process method handles and invokedynamic. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
614 |
* @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
|
615 |
* @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
|
616 |
* given parameter |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
617 |
*/ |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
618 |
public int parameterSlotDepth(int num) { |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
619 |
if (num < 0 || num > ptypes.length) |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
620 |
parameterType(num); // force a range check |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
621 |
return form.parameterToArgSlot(num-1); |
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 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
624 |
/** The number of JVM stack slots required to receive a return value |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
625 |
* from a method of this type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
626 |
* 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
|
627 |
* 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
|
628 |
* <p> |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
629 |
* This method is included for the benfit of applications that must |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
630 |
* generate bytecodes that process method handles and invokedynamic. |
5a17df307cbc
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631 |
* @return the number of JVM stack slots (0, 1, or 2) for this type's return value |
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6829144: JSR 292 JVM features need a provisional Java API
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632 |
*/ |
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6829144: JSR 292 JVM features need a provisional Java API
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|
633 |
public int returnSlotCount() { |
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6829144: JSR 292 JVM features need a provisional Java API
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|
634 |
return form.returnSlotCount(); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
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|
635 |
} |
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6829144: JSR 292 JVM features need a provisional Java API
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|
636 |
|
4537 | 637 |
/** Convenience method for {@link #methodType(java.lang.Class, java.lang.Class[])}. |
5722
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638 |
* Find or create an instance of the given method type. |
2707
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|
639 |
* Any class or interface name embedded in the signature string |
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6829144: JSR 292 JVM features need a provisional Java API
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|
640 |
* will be resolved by calling {@link ClassLoader#loadClass(java.lang.String)} |
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6829144: JSR 292 JVM features need a provisional Java API
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|
641 |
* 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
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|
642 |
* <p> |
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6829144: JSR 292 JVM features need a provisional Java API
jrose
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|
643 |
* Note that it is possible to build method types which cannot be |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
644 |
* constructed by this method, because their component types are |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
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|
645 |
* not all reachable from a common class loader. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
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|
646 |
* <p> |
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6829144: JSR 292 JVM features need a provisional Java API
jrose
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|
647 |
* This method is included for the benfit of applications that must |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
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changeset
|
648 |
* generate bytecodes that process method handles and invokedynamic. |
4537 | 649 |
* @param descriptor a bytecode-level signature string "(T...)T" |
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jrose
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|
650 |
* @param loader the class loader in which to look up the types |
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jrose
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|
651 |
* @return a method type matching the bytecode-level signature |
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6829144: JSR 292 JVM features need a provisional Java API
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|
652 |
* @throws IllegalArgumentException if the string is not well-formed |
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6829144: JSR 292 JVM features need a provisional Java API
jrose
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|
653 |
* @throws TypeNotPresentException if a named type cannot be found |
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6829144: JSR 292 JVM features need a provisional Java API
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|
654 |
*/ |
4537 | 655 |
public static MethodType fromMethodDescriptorString(String descriptor, ClassLoader loader) |
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5a17df307cbc
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|
656 |
throws IllegalArgumentException, TypeNotPresentException |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
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|
657 |
{ |
4537 | 658 |
List<Class<?>> types = BytecodeDescriptor.parseMethod(descriptor, loader); |
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|
659 |
Class<?> rtype = types.remove(types.size() - 1); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
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|
660 |
Class<?>[] ptypes = types.toArray(NO_PTYPES); |
5a17df307cbc
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jrose
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|
661 |
return makeImpl(rtype, ptypes, true); |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
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|
662 |
} |
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6829144: JSR 292 JVM features need a provisional Java API
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|
663 |
|
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
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|
664 |
/** |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
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|
665 |
* Create a bytecode signature representation of the type. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
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|
666 |
* Note that this is not a strict inverse of |
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6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
667 |
* <p> |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
668 |
* This method is included for the benfit of applications that must |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
669 |
* generate bytecodes that process method handles and invokedynamic. |
4537 | 670 |
* {@link #fromMethodDescriptorString(java.lang.String, java.lang.ClassLoader)}, |
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
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|
671 |
* because the latter requires a suitable class loader argument. |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
672 |
* @return the bytecode signature representation |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
673 |
*/ |
4537 | 674 |
public String toMethodDescriptorString() { |
675 |
return BytecodeDescriptor.unparse(this); |
|
676 |
} |
|
677 |
||
678 |
/** Temporary alias for toMethodDescriptorString; delete after M3. */ |
|
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6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
679 |
public String toBytecodeString() { |
4537 | 680 |
return toMethodDescriptorString(); |
681 |
} |
|
682 |
/** Temporary alias for fromMethodDescriptorString; delete after M3. */ |
|
683 |
public static MethodType fromBytecodeString(String descriptor, ClassLoader loader) |
|
684 |
throws IllegalArgumentException, TypeNotPresentException { |
|
685 |
return fromMethodDescriptorString(descriptor, loader); |
|
2707
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
686 |
} |
5a17df307cbc
6829144: JSR 292 JVM features need a provisional Java API
jrose
parents:
diff
changeset
|
687 |
} |