author | mduigou |
Thu, 04 Aug 2011 08:53:16 -0700 | |
changeset 10142 | 43c81972df7b |
parent 10127 | c85d1ec57ee7 |
child 10342 | ca0984bc9d32 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2011, Oracle and/or its affiliates. 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. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.lang.reflect; |
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import java.lang.annotation.*; |
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import java.util.Map; |
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import sun.reflect.annotation.AnnotationParser; |
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import sun.reflect.generics.repository.ConstructorRepository; |
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import sun.reflect.generics.factory.CoreReflectionFactory; |
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import sun.reflect.generics.factory.GenericsFactory; |
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import sun.reflect.generics.scope.ConstructorScope; |
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/** |
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* A shared superclass for the common functionality of {@link Method} |
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* and {@link Constructor}. |
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* |
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* @since 1.8 |
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*/ |
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public abstract class Executable extends AccessibleObject |
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implements Member, GenericDeclaration { |
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/* |
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* Only grant package-visibility to the constructor. |
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*/ |
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Executable() {} |
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/** |
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* Accessor method to allow code sharing |
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*/ |
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abstract byte[] getAnnotationBytes(); |
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/** |
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* Does the Executable have generic information. |
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*/ |
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abstract boolean hasGenericInformation(); |
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abstract ConstructorRepository getGenericInfo(); |
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boolean equalParamTypes(Class<?>[] params1, Class<?>[] params2) { |
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/* Avoid unnecessary cloning */ |
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if (params1.length == params2.length) { |
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for (int i = 0; i < params1.length; i++) { |
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if (params1[i] != params2[i]) |
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return false; |
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} |
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return true; |
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} |
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return false; |
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} |
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Annotation[][] parseParameterAnnotations(byte[] parameterAnnotations) { |
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return AnnotationParser.parseParameterAnnotations( |
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parameterAnnotations, |
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sun.misc.SharedSecrets.getJavaLangAccess(). |
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getConstantPool(getDeclaringClass()), |
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getDeclaringClass()); |
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} |
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void separateWithCommas(Class<?>[] types, StringBuilder sb) { |
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for (int j = 0; j < types.length; j++) { |
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sb.append(Field.getTypeName(types[j])); |
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if (j < (types.length - 1)) |
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sb.append(","); |
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} |
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} |
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void printModifiersIfNonzero(StringBuilder sb, int mask) { |
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int mod = getModifiers() & mask; |
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if (mod != 0) { |
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sb.append(Modifier.toString(mod)).append(' '); |
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} |
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} |
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String sharedToString(int modifierMask, |
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Class<?>[] parameterTypes, |
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Class<?>[] exceptionTypes) { |
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try { |
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StringBuilder sb = new StringBuilder(); |
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printModifiersIfNonzero(sb, modifierMask); |
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specificToStringHeader(sb); |
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sb.append('('); |
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separateWithCommas(parameterTypes, sb); |
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sb.append(')'); |
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if (exceptionTypes.length > 0) { |
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sb.append(" throws "); |
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separateWithCommas(exceptionTypes, sb); |
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} |
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return sb.toString(); |
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} catch (Exception e) { |
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return "<" + e + ">"; |
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} |
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} |
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/** |
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* Generate toString header information specific to a method or |
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* constructor. |
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*/ |
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abstract void specificToStringHeader(StringBuilder sb); |
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String sharedToGenericString(int modifierMask) { |
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try { |
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StringBuilder sb = new StringBuilder(); |
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printModifiersIfNonzero(sb, modifierMask); |
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TypeVariable<?>[] typeparms = getTypeParameters(); |
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if (typeparms.length > 0) { |
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boolean first = true; |
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sb.append('<'); |
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for(TypeVariable<?> typeparm: typeparms) { |
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if (!first) |
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sb.append(','); |
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// Class objects can't occur here; no need to test |
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// and call Class.getName(). |
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sb.append(typeparm.toString()); |
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first = false; |
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142 |
} |
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143 |
sb.append("> "); |
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144 |
} |
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145 |
|
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146 |
specificToGenericStringHeader(sb); |
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147 |
|
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148 |
sb.append('('); |
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Type[] params = getGenericParameterTypes(); |
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150 |
for (int j = 0; j < params.length; j++) { |
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String param = (params[j] instanceof Class)? |
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152 |
Field.getTypeName((Class)params[j]): |
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153 |
(params[j].toString()); |
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if (isVarArgs() && (j == params.length - 1)) // replace T[] with T... |
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param = param.replaceFirst("\\[\\]$", "..."); |
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sb.append(param); |
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157 |
if (j < (params.length - 1)) |
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158 |
sb.append(','); |
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159 |
} |
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160 |
sb.append(')'); |
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161 |
Type[] exceptions = getGenericExceptionTypes(); |
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162 |
if (exceptions.length > 0) { |
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163 |
sb.append(" throws "); |
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164 |
for (int k = 0; k < exceptions.length; k++) { |
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sb.append((exceptions[k] instanceof Class)? |
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166 |
((Class)exceptions[k]).getName(): |
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167 |
exceptions[k].toString()); |
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168 |
if (k < (exceptions.length - 1)) |
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169 |
sb.append(','); |
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170 |
} |
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171 |
} |
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172 |
return sb.toString(); |
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173 |
} catch (Exception e) { |
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174 |
return "<" + e + ">"; |
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175 |
} |
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176 |
} |
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177 |
|
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178 |
/** |
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* Generate toGenericString header information specific to a |
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* method or constructor. |
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181 |
*/ |
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182 |
abstract void specificToGenericStringHeader(StringBuilder sb); |
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183 |
|
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184 |
/** |
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185 |
* Returns the {@code Class} object representing the class or interface |
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* that declares the method represented by this executable object. |
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187 |
*/ |
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188 |
public abstract Class<?> getDeclaringClass(); |
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189 |
|
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190 |
/** |
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191 |
* Returns the name of the executable represented by this object. |
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192 |
*/ |
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193 |
public abstract String getName(); |
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194 |
|
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195 |
/** |
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196 |
* Returns the Java language {@linkplain Modifier modifiers} for |
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197 |
* the executable represented by this object. |
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|
198 |
*/ |
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199 |
public abstract int getModifiers(); |
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200 |
|
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201 |
/** |
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202 |
* Returns an array of {@code TypeVariable} objects that represent the |
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203 |
* type variables declared by the generic declaration represented by this |
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204 |
* {@code GenericDeclaration} object, in declaration order. Returns an |
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205 |
* array of length 0 if the underlying generic declaration declares no type |
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206 |
* variables. |
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207 |
* |
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208 |
* @return an array of {@code TypeVariable} objects that represent |
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209 |
* the type variables declared by this generic declaration |
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210 |
* @throws GenericSignatureFormatError if the generic |
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|
211 |
* signature of this generic declaration does not conform to |
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212 |
* the format specified in |
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|
213 |
* <cite>The Java™ Virtual Machine Specification</cite> |
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|
214 |
*/ |
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|
215 |
public abstract TypeVariable<?>[] getTypeParameters(); |
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|
216 |
|
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|
217 |
/** |
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|
218 |
* Returns an array of {@code Class} objects that represent the formal |
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219 |
* parameter types, in declaration order, of the executable |
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220 |
* represented by this object. Returns an array of length |
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|
221 |
* 0 if the underlying method takes no parameters. |
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|
222 |
* |
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223 |
* @return the parameter types for the method this object |
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224 |
* represents |
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|
225 |
*/ |
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226 |
public abstract Class<?>[] getParameterTypes(); |
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227 |
|
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|
228 |
/** |
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|
229 |
* Returns an array of {@code Type} objects that represent the formal |
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|
230 |
* parameter types, in declaration order, of the method represented by |
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|
231 |
* this executable object. Returns an array of length 0 if the |
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|
232 |
* underlying method takes no parameters. |
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|
233 |
* |
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|
234 |
* <p>If a formal parameter type is a parameterized type, |
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|
235 |
* the {@code Type} object returned for it must accurately reflect |
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|
236 |
* the actual type parameters used in the source code. |
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|
237 |
* |
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|
238 |
* <p>If a formal parameter type is a type variable or a parameterized |
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|
239 |
* type, it is created. Otherwise, it is resolved. |
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|
240 |
* |
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|
241 |
* @return an array of {@code Type}s that represent the formal |
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|
242 |
* parameter types of the underlying method, in declaration order |
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|
243 |
* @throws GenericSignatureFormatError |
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|
244 |
* if the generic method signature does not conform to the format |
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|
245 |
* specified in |
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|
246 |
* <cite>The Java™ Virtual Machine Specification</cite> |
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|
247 |
* @throws TypeNotPresentException if any of the parameter |
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|
248 |
* types of the underlying method refers to a non-existent type |
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|
249 |
* declaration |
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|
250 |
* @throws MalformedParameterizedTypeException if any of |
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|
251 |
* the underlying method's parameter types refer to a parameterized |
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|
252 |
* type that cannot be instantiated for any reason |
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|
253 |
*/ |
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|
254 |
public Type[] getGenericParameterTypes() { |
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|
255 |
if (hasGenericInformation()) |
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|
256 |
return getGenericInfo().getParameterTypes(); |
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|
257 |
else |
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|
258 |
return getParameterTypes(); |
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|
259 |
} |
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|
260 |
|
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|
261 |
/** |
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|
262 |
* Returns an array of {@code Class} objects that represent the |
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|
263 |
* types of exceptions declared to be thrown by the underlying |
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|
264 |
* executable represented by this object. Returns an array of |
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|
265 |
* length 0 if the executable declares no exceptions in its {@code |
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|
266 |
* throws} clause. |
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|
267 |
* |
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|
268 |
* @return the exception types declared as being thrown by the |
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|
269 |
* executable this object represents |
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|
270 |
*/ |
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|
271 |
public abstract Class<?>[] getExceptionTypes(); |
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|
272 |
|
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|
273 |
/** |
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|
274 |
* Returns an array of {@code Type} objects that represent the |
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275 |
* exceptions declared to be thrown by this executable object. |
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276 |
* Returns an array of length 0 if the underlying executable declares |
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|
277 |
* no exceptions in its {@code throws} clause. |
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|
278 |
* |
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|
279 |
* <p>If an exception type is a type variable or a parameterized |
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|
280 |
* type, it is created. Otherwise, it is resolved. |
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|
281 |
* |
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|
282 |
* @return an array of Types that represent the exception types |
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|
283 |
* thrown by the underlying method |
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284 |
* @throws GenericSignatureFormatError |
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* if the generic method signature does not conform to the format |
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286 |
* specified in |
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287 |
* <cite>The Java™ Virtual Machine Specification</cite> |
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288 |
* @throws TypeNotPresentException if the underlying method's |
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289 |
* {@code throws} clause refers to a non-existent type declaration |
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290 |
* @throws MalformedParameterizedTypeException if |
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291 |
* the underlying method's {@code throws} clause refers to a |
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292 |
* parameterized type that cannot be instantiated for any reason |
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293 |
*/ |
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294 |
public Type[] getGenericExceptionTypes() { |
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295 |
Type[] result; |
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296 |
if (hasGenericInformation() && |
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297 |
((result = getGenericInfo().getExceptionTypes()).length > 0)) |
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298 |
return result; |
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299 |
else |
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300 |
return getExceptionTypes(); |
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301 |
} |
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302 |
|
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303 |
/** |
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304 |
* Returns a string describing this {@code Executable}, including |
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305 |
* any type parameters. |
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306 |
*/ |
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307 |
public abstract String toGenericString(); |
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308 |
|
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309 |
/** |
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310 |
* Returns {@code true} if this executable was declared to take a |
c85d1ec57ee7
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311 |
* variable number of arguments; returns {@code false} otherwise. |
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312 |
* |
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313 |
* @return {@code true} if an only if this executable was declared |
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314 |
* to take a variable number of arguments. |
c85d1ec57ee7
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|
315 |
*/ |
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316 |
public boolean isVarArgs() { |
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317 |
return (getModifiers() & Modifier.VARARGS) != 0; |
c85d1ec57ee7
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318 |
} |
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319 |
|
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320 |
/** |
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321 |
* Returns {@code true} if this executable is a synthetic |
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322 |
* construct; returns {@code false} otherwise. |
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323 |
* |
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324 |
* @return true if and only if this executable is a synthetic |
c85d1ec57ee7
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325 |
* construct as defined by |
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|
326 |
* <cite>The Java™ Language Specification</cite>. |
c85d1ec57ee7
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|
327 |
*/ |
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|
328 |
public boolean isSynthetic() { |
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329 |
return Modifier.isSynthetic(getModifiers()); |
c85d1ec57ee7
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330 |
} |
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331 |
|
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332 |
/** |
c85d1ec57ee7
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|
333 |
* Returns an array of arrays that represent the annotations on |
c85d1ec57ee7
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|
334 |
* the formal parameters, in declaration order, of the executable |
c85d1ec57ee7
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|
335 |
* represented by this object. (Returns an array of length zero if |
c85d1ec57ee7
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|
336 |
* the underlying method is parameterless. If the executable has |
c85d1ec57ee7
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|
337 |
* one or more parameters, a nested array of length zero is |
c85d1ec57ee7
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|
338 |
* returned for each parameter with no annotations.) The |
c85d1ec57ee7
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|
339 |
* annotation objects contained in the returned arrays are |
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|
340 |
* serializable. The caller of this method is free to modify the |
c85d1ec57ee7
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|
341 |
* returned arrays; it will have no effect on the arrays returned |
c85d1ec57ee7
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|
342 |
* to other callers. |
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|
343 |
* |
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|
344 |
* @return an array of arrays that represent the annotations on the formal |
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|
345 |
* parameters, in declaration order, of the exectuable represented by this |
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|
346 |
* object |
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|
347 |
*/ |
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|
348 |
public abstract Annotation[][] getParameterAnnotations(); |
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|
349 |
|
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350 |
Annotation[][] sharedGetParameterAnnotations(Class<?>[] parameterTypes, |
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|
351 |
byte[] parameterAnnotations) { |
c85d1ec57ee7
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|
352 |
int numParameters = parameterTypes.length; |
c85d1ec57ee7
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darcy
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|
353 |
if (parameterAnnotations == null) |
c85d1ec57ee7
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|
354 |
return new Annotation[numParameters][0]; |
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|
355 |
|
c85d1ec57ee7
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|
356 |
Annotation[][] result = parseParameterAnnotations(parameterAnnotations); |
c85d1ec57ee7
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|
357 |
|
c85d1ec57ee7
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|
358 |
if (result.length != numParameters) |
c85d1ec57ee7
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darcy
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|
359 |
handleParameterNumberMismatch(result.length, numParameters); |
c85d1ec57ee7
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darcy
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|
360 |
return result; |
c85d1ec57ee7
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|
361 |
} |
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|
362 |
|
c85d1ec57ee7
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|
363 |
abstract void handleParameterNumberMismatch(int resultLength, int numParameters); |
c85d1ec57ee7
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|
364 |
|
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|
365 |
/** |
c85d1ec57ee7
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|
366 |
* {@inheritDoc} |
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|
367 |
* @throws NullPointerException {@inheritDoc} |
c85d1ec57ee7
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|
368 |
*/ |
10142
43c81972df7b
7073296: Executable.equalParamTypes() incorrectly returns true when the number of params differs.
mduigou
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10127
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|
369 |
@SuppressWarnings("unchecked") |
43c81972df7b
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mduigou
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370 |
public <T extends Annotation> T getAnnotation(Class<T> annotationClass) { |
10127
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|
371 |
if (annotationClass == null) |
c85d1ec57ee7
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|
372 |
throw new NullPointerException(); |
c85d1ec57ee7
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darcy
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|
373 |
|
c85d1ec57ee7
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|
374 |
return (T) declaredAnnotations().get(annotationClass); |
c85d1ec57ee7
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|
375 |
} |
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|
376 |
|
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darcy
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|
377 |
/** |
c85d1ec57ee7
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darcy
parents:
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|
378 |
* {@inheritDoc} |
c85d1ec57ee7
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|
379 |
*/ |
c85d1ec57ee7
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darcy
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|
380 |
public Annotation[] getDeclaredAnnotations() { |
c85d1ec57ee7
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darcy
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|
381 |
return AnnotationParser.toArray(declaredAnnotations()); |
c85d1ec57ee7
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darcy
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|
382 |
} |
c85d1ec57ee7
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darcy
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|
383 |
|
c85d1ec57ee7
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darcy
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|
384 |
private transient Map<Class<? extends Annotation>, Annotation> declaredAnnotations; |
c85d1ec57ee7
7007535: (reflect) Please generalize Constructor and Method
darcy
parents:
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|
385 |
|
c85d1ec57ee7
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darcy
parents:
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|
386 |
private synchronized Map<Class<? extends Annotation>, Annotation> declaredAnnotations() { |
c85d1ec57ee7
7007535: (reflect) Please generalize Constructor and Method
darcy
parents:
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|
387 |
if (declaredAnnotations == null) { |
c85d1ec57ee7
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darcy
parents:
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|
388 |
declaredAnnotations = AnnotationParser.parseAnnotations( |
c85d1ec57ee7
7007535: (reflect) Please generalize Constructor and Method
darcy
parents:
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|
389 |
getAnnotationBytes(), |
c85d1ec57ee7
7007535: (reflect) Please generalize Constructor and Method
darcy
parents:
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|
390 |
sun.misc.SharedSecrets.getJavaLangAccess(). |
c85d1ec57ee7
7007535: (reflect) Please generalize Constructor and Method
darcy
parents:
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|
391 |
getConstantPool(getDeclaringClass()), |
c85d1ec57ee7
7007535: (reflect) Please generalize Constructor and Method
darcy
parents:
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|
392 |
getDeclaringClass()); |
c85d1ec57ee7
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darcy
parents:
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|
393 |
} |
c85d1ec57ee7
7007535: (reflect) Please generalize Constructor and Method
darcy
parents:
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|
394 |
return declaredAnnotations; |
c85d1ec57ee7
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darcy
parents:
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|
395 |
} |
c85d1ec57ee7
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darcy
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|
396 |
} |