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/* Compiler.java -- Interface for implementing a method to override |
/* Compiler.java -- placeholder for Java-to-native runtime compilers |
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Object.clone()comparaing objects to obtain an ordering |
Copyright (C) 1998, 1999, 2001, 2002 Free Software Foundation, Inc. |
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Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc. |
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This file is part of GNU Classpath. |
This file is part of GNU Classpath. |
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it under the terms of the GNU General Public License as published by |
it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
any later version. |
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GNU Classpath is distributed in the hope that it will be useful, but |
GNU Classpath is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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package java.lang; |
package java.lang; |
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/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3 |
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*/ |
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/** |
/** |
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* The <code>Compiler</code> class is a place holder for a JIT |
* The <code>Compiler</code> class is a placeholder for a JIT compiler |
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* compiler implementation does nothing unless there is such a |
* implementation, and does nothing unless there is such a compiler. |
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* compiler by default. |
* |
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* <p> |
* <p>The system property <code>java.compiler</code> may contain the name |
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* The system property <code>java.compiler</code> may contain the name |
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* of a library to load with <code>System.loadLibrary</code> when the |
* of a library to load with <code>System.loadLibrary</code> when the |
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* virtual machine first starts. If so and loading the library succeeds, |
* virtual machine first starts. If so, and loading the library succeeds, |
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* then a function by the name of <code>java_lang_Compiler_start()</code> |
* then a function by the name of <code>java_lang_Compiler_start()</code> |
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* in that library is called. |
* in that library is called. |
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* |
* |
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* Note that a VM might not have implemented any of this. |
* <p>Note that a VM might not have implemented any of this. |
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* |
* |
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* @author Tom Tromey <tromey@cygnus.com> |
* @author Tom Tromey <tromey@cygnus.com> |
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* |
* @see System#getProperty(String) |
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* @see System#getProperty(String, String) |
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* @see System#loadLibrary(String) |
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* @since JDK 1.0 |
* @since JDK 1.0 |
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* @see System#getProperty(java.lang.String) |
* @status updated to 1.4 |
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* @see System#getProperty(java.lang.String,java.lang.String) |
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* @see System#loadLibrary(java.lang.String) |
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*/ |
*/ |
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public final class Compiler |
public final class Compiler |
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{ |
{ |
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/** |
/** |
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* Don't allow new `Compiler's to be made. |
* Don't allow new `Compiler's to be made. |
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*/ |
*/ |
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private Compiler () |
private Compiler() |
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{ |
{ |
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} |
} |
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/** |
/** |
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* Compile the class named by <code>oneClass</code>. |
* Compile the class named by <code>oneClass</code>. |
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* |
* |
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* @param oneClass the class to compile |
* @param oneClass the class to compile |
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* @return <code>false</code> if no compiler is available or |
* @return <code>false</code> if no compiler is available or |
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* compilation failed and <code>true</code> if compilation succeeded. |
* compilation failed, <code>true</code> if compilation succeeded |
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*/ |
* @throws NullPointerException if oneClass is null |
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public static boolean compileClass (Class oneClass) |
*/ |
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{ |
public static boolean compileClass(Class oneClass) |
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// Never succeed. |
{ |
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return false; |
// Never succeed. |
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} |
return false; |
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} |
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/** |
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* Compile the classes whose name matches <code>classNames/code>. |
/** |
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* |
* Compile the classes whose name matches <code>classNames/code>. |
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* @param classNames the name of classes to compile |
* |
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* @return <code>false</code> if no compiler is available or |
* @param classNames the name of classes to compile |
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* compilation failed and <code>true</code> if compilation succeeded. |
* @return <code>false</code> if no compiler is available or |
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*/ |
* compilation failed, <code>true</code> if compilation succeeded |
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public static boolean compileClasses (String classNames) |
* @throws NullPointerException if classNames is null |
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{ |
*/ |
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// Note the incredibly lame interface. Always fail. |
public static boolean compileClasses(String classNames) |
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return false; |
{ |
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} |
// Note the incredibly lame interface. Always fail. |
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return false; |
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/** |
} |
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* This method examines the argument and performs an operation |
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* according to the compilers documentation. No specific operation |
/** |
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* is required. |
* This method examines the argument and performs an operation |
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*/ |
* according to the compilers documentation. No specific operation |
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public static Object command (Object arg) |
* is required. |
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{ |
* |
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// Our implementation defines this to a no-op. |
* @param arg a compiler-specific argument |
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return null; |
* @return a compiler-specific value, including null |
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} |
* @throws NullPointerException if the compiler doesn't like a null arg |
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*/ |
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/** |
public static Object command(Object arg) |
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* Calling <code>Compiler.enable()</code> will cause the compiler |
{ |
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* to resume operation if it was previously disabled. |
// Our implementation defines this to a no-op. |
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*/ |
return null; |
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public static void enable () { } |
} |
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/** |
/** |
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* Calling <code>Compiler.disable()</code> will cause the compiler |
* Calling <code>Compiler.enable()</code> will cause the compiler |
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* to be suspended. |
* to resume operation if it was previously disabled; provided that a |
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*/ |
* compiler even exists. |
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public static void disable () { } |
*/ |
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public static void enable() |
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{ |
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} |
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/** |
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* Calling <code>Compiler.disable()</code> will cause the compiler |
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* to be suspended; provided that a compiler even exists. |
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*/ |
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public static void disable() |
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{ |
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} |
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} |
} |