author | mcimadamore |
Mon, 21 Jan 2013 20:14:39 +0000 | |
changeset 15375 | d2529dc91d77 |
parent 14725 | 65836e833f59 |
child 16809 | 5acfcb821d65 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2012, 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. |
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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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/* |
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* @test |
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* @bug 8002099 |
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* @summary Add support for intersection types in cast expression |
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*/ |
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import com.sun.source.util.JavacTask; |
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import com.sun.tools.javac.util.List; |
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import com.sun.tools.javac.util.ListBuffer; |
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import java.net.URI; |
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import java.util.Arrays; |
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import javax.tools.Diagnostic; |
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import javax.tools.JavaCompiler; |
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import javax.tools.JavaFileObject; |
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import javax.tools.SimpleJavaFileObject; |
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import javax.tools.StandardJavaFileManager; |
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import javax.tools.ToolProvider; |
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public class IntersectionTargetTypeTest { |
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static int checkCount = 0; |
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enum BoundKind { |
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INTF, |
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CLASS, |
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SAM, |
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ZAM; |
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} |
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enum MethodKind { |
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NONE, |
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ABSTRACT, |
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DEFAULT; |
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} |
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enum TypeKind { |
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A("interface A { }\n", "A", BoundKind.ZAM), |
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B("interface B { default void m() { } }\n", "B", BoundKind.ZAM), |
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C("interface C { void m(); }\n", "C", BoundKind.SAM), |
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D("interface D extends B { }\n", "D", BoundKind.ZAM), |
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E("interface E extends C { }\n", "E", BoundKind.SAM), |
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F("interface F extends C { void g(); }\n", "F", BoundKind.INTF), |
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G("interface G extends B { void g(); }\n", "G", BoundKind.SAM), |
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H("interface H extends A { void g(); }\n", "H", BoundKind.SAM), |
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OBJECT("", "Object", BoundKind.CLASS), |
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STRING("", "String", BoundKind.CLASS); |
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String declStr; |
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String typeStr; |
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BoundKind boundKind; |
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private TypeKind(String declStr, String typeStr, BoundKind boundKind) { |
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this.declStr = declStr; |
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this.typeStr = typeStr; |
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this.boundKind = boundKind; |
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} |
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boolean compatibleSupertype(TypeKind tk) { |
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if (tk == this) return true; |
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switch (tk) { |
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case B: |
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return this != C && this != E && this != F; |
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case C: |
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return this != B && this != C && this != D && this != G; |
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case D: return compatibleSupertype(B); |
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case E: |
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case F: return compatibleSupertype(C); |
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case G: return compatibleSupertype(B); |
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case H: return compatibleSupertype(A); |
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default: |
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return true; |
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} |
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} |
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} |
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enum CastKind { |
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ONE_ARY("(#B0)", 1), |
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TWO_ARY("(#B0 & #B1)", 2), |
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THREE_ARY("(#B0 & #B1 & #B2)", 3); |
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String castTemplate; |
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int nbounds; |
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CastKind(String castTemplate, int nbounds) { |
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this.castTemplate = castTemplate; |
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this.nbounds = nbounds; |
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} |
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} |
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enum ExpressionKind { |
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LAMBDA("()->{}", true), |
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MREF("this::m", true), |
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//COND_LAMBDA("(true ? ()->{} : ()->{})", true), re-enable if spec allows this |
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//COND_MREF("(true ? this::m : this::m)", true), |
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STANDALONE("null", false); |
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String exprString; |
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boolean isFunctional; |
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private ExpressionKind(String exprString, boolean isFunctional) { |
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this.exprString = exprString; |
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this.isFunctional = isFunctional; |
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} |
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} |
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static class CastInfo { |
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CastKind kind; |
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TypeKind[] types; |
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CastInfo(CastKind kind, TypeKind... types) { |
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this.kind = kind; |
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this.types = types; |
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} |
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String getCast() { |
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String temp = kind.castTemplate; |
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for (int i = 0; i < kind.nbounds ; i++) { |
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temp = temp.replace(String.format("#B%d", i), types[i].typeStr); |
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} |
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return temp; |
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} |
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145 |
|
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boolean wellFormed() { |
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//check for duplicate types |
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148 |
for (int i = 0 ; i < types.length ; i++) { |
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149 |
for (int j = 0 ; j < types.length ; j++) { |
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if (i != j && types[i] == types[j]) { |
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return false; |
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152 |
} |
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153 |
} |
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154 |
} |
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//check that classes only appear as first bound |
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boolean classOk = true; |
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|
157 |
for (int i = 0 ; i < types.length ; i++) { |
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if (types[i].boundKind == BoundKind.CLASS && |
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159 |
!classOk) { |
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160 |
return false; |
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161 |
} |
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classOk = false; |
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163 |
} |
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//check that supertypes are mutually compatible |
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165 |
for (int i = 0 ; i < types.length ; i++) { |
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|
166 |
for (int j = 0 ; j < types.length ; j++) { |
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|
167 |
if (!types[i].compatibleSupertype(types[j]) && i != j) { |
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return false; |
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|
169 |
} |
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|
170 |
} |
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|
171 |
} |
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return true; |
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173 |
} |
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|
174 |
} |
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175 |
|
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176 |
public static void main(String... args) throws Exception { |
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//create default shared JavaCompiler - reused across multiple compilations |
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JavaCompiler comp = ToolProvider.getSystemJavaCompiler(); |
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StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null); |
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180 |
|
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181 |
for (CastInfo cInfo : allCastInfo()) { |
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182 |
for (ExpressionKind ek : ExpressionKind.values()) { |
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|
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new IntersectionTargetTypeTest(cInfo, ek).run(comp, fm); |
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184 |
} |
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|
185 |
} |
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|
186 |
System.out.println("Total check executed: " + checkCount); |
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|
187 |
} |
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|
188 |
|
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|
189 |
static List<CastInfo> allCastInfo() { |
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|
190 |
ListBuffer<CastInfo> buf = ListBuffer.lb(); |
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|
191 |
for (CastKind kind : CastKind.values()) { |
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|
192 |
for (TypeKind b1 : TypeKind.values()) { |
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|
193 |
if (kind.nbounds == 1) { |
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|
194 |
buf.append(new CastInfo(kind, b1)); |
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|
195 |
continue; |
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|
196 |
} else { |
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|
197 |
for (TypeKind b2 : TypeKind.values()) { |
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|
198 |
if (kind.nbounds == 2) { |
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|
199 |
buf.append(new CastInfo(kind, b1, b2)); |
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|
200 |
continue; |
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|
201 |
} else { |
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|
202 |
for (TypeKind b3 : TypeKind.values()) { |
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|
203 |
buf.append(new CastInfo(kind, b1, b2, b3)); |
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|
204 |
} |
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|
205 |
} |
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|
206 |
} |
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|
207 |
} |
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|
208 |
} |
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|
209 |
} |
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|
210 |
return buf.toList(); |
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|
211 |
} |
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|
212 |
|
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|
213 |
CastInfo cInfo; |
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|
214 |
ExpressionKind ek; |
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|
215 |
JavaSource source; |
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|
216 |
DiagnosticChecker diagChecker; |
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|
217 |
|
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|
218 |
IntersectionTargetTypeTest(CastInfo cInfo, ExpressionKind ek) { |
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|
219 |
this.cInfo = cInfo; |
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|
220 |
this.ek = ek; |
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|
221 |
this.source = new JavaSource(); |
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|
222 |
this.diagChecker = new DiagnosticChecker(); |
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|
223 |
} |
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|
224 |
|
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|
225 |
class JavaSource extends SimpleJavaFileObject { |
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|
226 |
|
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|
227 |
String bodyTemplate = "class Test {\n" + |
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mcimadamore
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|
228 |
" void m() { }\n" + |
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|
229 |
" void test() {\n" + |
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|
230 |
" Object o = #C#E;\n" + |
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mcimadamore
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diff
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|
231 |
" } }"; |
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|
232 |
|
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|
233 |
String source = ""; |
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|
234 |
|
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|
235 |
public JavaSource() { |
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|
236 |
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE); |
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|
237 |
for (TypeKind tk : TypeKind.values()) { |
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|
238 |
source += tk.declStr; |
65836e833f59
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mcimadamore
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|
239 |
} |
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8002099: Add support for intersection types in cast expression
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|
240 |
source += bodyTemplate.replaceAll("#C", cInfo.getCast()).replaceAll("#E", ek.exprString); |
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|
241 |
} |
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|
242 |
|
65836e833f59
8002099: Add support for intersection types in cast expression
mcimadamore
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|
243 |
@Override |
65836e833f59
8002099: Add support for intersection types in cast expression
mcimadamore
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|
244 |
public CharSequence getCharContent(boolean ignoreEncodingErrors) { |
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8002099: Add support for intersection types in cast expression
mcimadamore
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diff
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|
245 |
return source; |
65836e833f59
8002099: Add support for intersection types in cast expression
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diff
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|
246 |
} |
65836e833f59
8002099: Add support for intersection types in cast expression
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diff
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|
247 |
} |
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|
248 |
|
65836e833f59
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|
249 |
void run(JavaCompiler tool, StandardJavaFileManager fm) throws Exception { |
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|
250 |
JavacTask ct = (JavacTask)tool.getTask(null, fm, diagChecker, |
15375
d2529dc91d77
8006566: Remove transient lambda-related guards from JavacParser
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14725
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|
251 |
null, null, Arrays.asList(source)); |
14725
65836e833f59
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|
252 |
try { |
65836e833f59
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mcimadamore
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|
253 |
ct.analyze(); |
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|
254 |
} catch (Throwable ex) { |
65836e833f59
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|
255 |
throw new AssertionError("Error thrown when compiling the following code:\n" + source.getCharContent(true)); |
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|
256 |
} |
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|
257 |
check(); |
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|
258 |
} |
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|
259 |
|
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|
260 |
void check() { |
65836e833f59
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mcimadamore
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|
261 |
checkCount++; |
65836e833f59
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|
262 |
|
65836e833f59
8002099: Add support for intersection types in cast expression
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|
263 |
boolean errorExpected = !cInfo.wellFormed(); |
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mcimadamore
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|
264 |
|
65836e833f59
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mcimadamore
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diff
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|
265 |
if (ek.isFunctional) { |
65836e833f59
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|
266 |
//first bound must be a SAM |
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|
267 |
errorExpected |= cInfo.types[0].boundKind != BoundKind.SAM; |
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|
268 |
if (cInfo.types.length > 1) { |
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|
269 |
//additional bounds must be ZAMs |
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|
270 |
for (int i = 1; i < cInfo.types.length; i++) { |
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|
271 |
errorExpected |= cInfo.types[i].boundKind != BoundKind.ZAM; |
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|
272 |
} |
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|
273 |
} |
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|
274 |
} |
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|
275 |
|
65836e833f59
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|
276 |
if (errorExpected != diagChecker.errorFound) { |
65836e833f59
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|
277 |
throw new Error("invalid diagnostics for source:\n" + |
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parents:
diff
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|
278 |
source.getCharContent(true) + |
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|
279 |
"\nFound error: " + diagChecker.errorFound + |
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|
280 |
"\nExpected error: " + errorExpected); |
65836e833f59
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|
281 |
} |
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|
282 |
} |
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|
283 |
|
65836e833f59
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|
284 |
static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> { |
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|
285 |
|
65836e833f59
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|
286 |
boolean errorFound; |
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|
287 |
|
65836e833f59
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|
288 |
public void report(Diagnostic<? extends JavaFileObject> diagnostic) { |
65836e833f59
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|
289 |
if (diagnostic.getKind() == Diagnostic.Kind.ERROR) { |
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errorFound = true; |
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} |
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} |
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} |
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} |