jdk8-mips64-public/langtools: test/tools/javac/T7093325.java@7375d4979bd3 (annotated)

test/tools/javac/T7093325.java@7375d4979bd3 (annotated)

test/tools/javac/T7093325.java

Mon, 14 Nov 2011 15:11:10 -0800

author: ksrini
date: Mon, 14 Nov 2011 15:11:10 -0800
changeset 1138: 7375d4979bd3
parent 1109: 3cdfa97e1be9
child 1482: 954541f13717
permissions: -rw-r--r--

7106166: (javac) re-factor EndPos parser
Reviewed-by: jjg

 /*
  * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 /*
  * @test
  * @bug 7093325
  * @summary Redundant entry in bytecode exception table
  */
 import com.sun.source.util.JavacTask;
 import com.sun.tools.classfile.Attribute;
 import com.sun.tools.classfile.ClassFile;
 import com.sun.tools.classfile.Code_attribute;
 import com.sun.tools.classfile.ConstantPool.*;
 import com.sun.tools.classfile.Method;
 import com.sun.tools.javac.api.JavacTool;
 import java.io.File;
 import java.net.URI;
 import java.util.Arrays;
 import javax.tools.JavaCompiler;
 import javax.tools.JavaFileObject;
 import javax.tools.SimpleJavaFileObject;
 import javax.tools.StandardJavaFileManager;
 import javax.tools.ToolProvider;
 public class T7093325 {
     /** global decls ***/
     // Create a single file manager and reuse it for each compile to save time.
     static StandardJavaFileManager fm = JavacTool.create().getStandardFileManager(null, null, null);
     //statistics
     static int checkCount = 0;
     enum StatementKind {
         THROW("throw new RuntimeException();", false, false),
         RETURN_NONEMPTY("System.out.println(); return;", true, false),
         RETURN_EMPTY("return;", true, true),
         APPLY("System.out.println();", true, false);
         String stmt;
         boolean canInline;
         boolean empty;
         private StatementKind(String stmt, boolean canInline, boolean empty) {
             this.stmt = stmt;
             this.canInline = canInline;
             this.empty = empty;
         }
     }
     enum CatchArity {
         NONE(""),
         ONE("catch (A a) { #S1 }"),
         TWO("catch (B b) { #S2 }"),
         THREE("catch (C c) { #S3 }"),
         FOUR("catch (D d) { #S4 }");
         String catchStr;
         private CatchArity(String catchStr) {
             this.catchStr = catchStr;
         }
         String catchers() {
             if (this.ordinal() == 0) {
                 return catchStr;
             } else {
                 return CatchArity.values()[this.ordinal() - 1].catchers() + catchStr;
             }
         }
     }
     public static void main(String... args) throws Exception {
         for (CatchArity ca : CatchArity.values()) {
             for (StatementKind stmt0 : StatementKind.values()) {
                 if (ca.ordinal() == 0) {
                     new T7093325(ca, stmt0).compileAndCheck();
                     continue;
                 }
                 for (StatementKind stmt1 : StatementKind.values()) {
                     if (ca.ordinal() == 1) {
                         new T7093325(ca, stmt0, stmt1).compileAndCheck();
                         continue;
                     }
                     for (StatementKind stmt2 : StatementKind.values()) {
                         if (ca.ordinal() == 2) {
                             new T7093325(ca, stmt0, stmt1, stmt2).compileAndCheck();
                             continue;
                         }
                         for (StatementKind stmt3 : StatementKind.values()) {
                             if (ca.ordinal() == 3) {
                                 new T7093325(ca, stmt0, stmt1, stmt2, stmt3).compileAndCheck();
                                 continue;
                             }
                             for (StatementKind stmt4 : StatementKind.values()) {
                                 if (ca.ordinal() == 4) {
                                     new T7093325(ca, stmt0, stmt1, stmt2, stmt3, stmt4).compileAndCheck();
                                     continue;
                                 }
                                 for (StatementKind stmt5 : StatementKind.values()) {
                                     new T7093325(ca, stmt0, stmt1, stmt2, stmt3, stmt4, stmt5).compileAndCheck();
                                 }
                             }
                         }
                     }
                 }
             }
         }
         System.out.println("Total checks made: " + checkCount);
     }
     /** instance decls **/
     CatchArity ca;
     StatementKind[] stmts;
     public T7093325(CatchArity ca, StatementKind... stmts) {
         this.ca = ca;
         this.stmts = stmts;
     }
     void compileAndCheck() throws Exception {
         final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
         JavaSource source = new JavaSource();
         JavacTask ct = (JavacTask)tool.getTask(null, fm, null,
                 null, null, Arrays.asList(source));
         ct.call();
         verifyBytecode(source);
     }
     void verifyBytecode(JavaSource source) {
         checkCount++;
         boolean lastInlined = false;
         boolean hasCode = false;
         int gapsCount = 0;
         for (int i = 0; i < stmts.length ; i++) {
             lastInlined = stmts[i].canInline;
             hasCode = hasCode || !stmts[i].empty;
             if (lastInlined && hasCode) {
                 hasCode = false;
                 gapsCount++;
             }
         }
         if (!lastInlined) {
             gapsCount++;
         }
         //System.out.printf("gaps %d \n %s \n", gapsCount, source.toString());
         File compiledTest = new File("Test.class");
         try {
             ClassFile cf = ClassFile.read(compiledTest);
             if (cf == null) {
                 throw new Error("Classfile not found: " + compiledTest.getName());
             }
             Method test_method = null;
             for (Method m : cf.methods) {
                 if (m.getName(cf.constant_pool).equals("test")) {
                     test_method = m;
                     break;
                 }
             }
             if (test_method == null) {
                 throw new Error("Method test() not found in class Test");
             }
             Code_attribute code = null;
             for (Attribute a : test_method.attributes) {
                 if (a.getName(cf.constant_pool).equals(Attribute.Code)) {
                     code = (Code_attribute)a;
                     break;
                 }
             }
             if (code == null) {
                 throw new Error("Code attribute not found in method test()");
             }
             int actualGapsCount = 0;
             for (int i = 0; i < code.exception_table_langth ; i++) {
                 int catchType = code.exception_table[i].catch_type;
                 if (catchType == 0) { //any
                     actualGapsCount++;
                 }
             }
             if (actualGapsCount != gapsCount) {
                 throw new Error("Bad exception table for test()\n" +
                             "expected gaps: " + gapsCount + "\n" +
                             "found gaps: " + actualGapsCount + "\n" +
                             source);
             }
         } catch (Exception e) {
             e.printStackTrace();
             throw new Error("error reading " + compiledTest +": " + e);
         }
     }
     class JavaSource extends SimpleJavaFileObject {
         static final String source_template =
                 "class A extends RuntimeException {} \n" +
                 "class B extends RuntimeException {} \n" +
                 "class C extends RuntimeException {} \n" +
                 "class D extends RuntimeException {} \n" +
                 "class E extends RuntimeException {} \n" +
                 "class Test {\n" +
                 "   void test() {\n" +
                 "   try { #S0 } #C finally { System.out.println(); }\n" +
                 "   }\n" +
                 "}";
         String source;
         public JavaSource() {
             super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
             source = source_template.replace("#C", ca.catchers());
             source = source.replace("#S0", stmts[0].stmt);
             for (int i = 1; i < ca.ordinal() + 1; i++) {
                 source = source.replace("#S" + i, stmts[i].stmt);
             }
         }
         @Override
         public String toString() {
             return source;
         }
         @Override
         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
             return source;
         }
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/T7093325.java@7375d4979bd3 (annotated)

test/tools/javac/T7093325.java