provide magic properties to control javac

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@393282 13f79535-47bb-0310-9956-ffa450edef68
19 years ago · eeda02e875
--- a/+ 5
+++ b/+ 5
@@ -376,7 +376,11 @@ Other changes:
  dare not change for fear of breaking complex SQL operations in
  existing files.
 * <javadoc>'s packagenames attribute is now optional and default to "*".
 * <javadoc>'s packagenames attribute is now optional and defaults to "*".
 * <javac>'s source and target attributes as well as <javadoc>'s source
  attribute will read default values from the properties
  ant.build.javac.source and ant.build.javac.target.
 Changes from Ant 1.6.4 to Ant 1.6.5
 ===================================
--- a/docs/manual/CoreTasks/javac.html
+++ b/docs/manual/CoreTasks/javac.html
@@ -241,7 +241,12 @@ invoking the compiler.</p>
    particular, if you use JDK 1.4+ the generated classes will not be
    usable for a 1.1 Java VM unless you explicitly set this attribute
    to the value 1.1 (which is the default value for JDK 1.1 to
    1.3).  We highly recommend to always specify this attribute.</b></td>
    1.3).  We highly recommend to always specify this
    attribute.</b><br>
    A default value for this attribute can be provided using the magic
    <a
    href="../javacprops.html#target"><code>ant.build.javac.target</code></a>
    property.</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
@@ -322,7 +327,11 @@ invoking the compiler.</p>
    at all.<br>
    <b>Note that the default value depends on the JVM that is running
    Ant.  We highly recommend to always specify this
    attribute.</b></td>
    attribute.</b><br>
    A default value for this attribute can be provided using the magic
    <a
    href="../javacprops.html#source"><code>ant.build.javac.source</code></a>
    property.</td>
    <td align="center" valign="top">No</td>
  </tr>
--- a/docs/manual/CoreTasks/javadoc.html
+++ b/docs/manual/CoreTasks/javadoc.html
@@ -407,7 +407,11 @@ to ensure that this command supports the attributes you wish to use.</p>
    <td valign="top">Necessary to enable javadoc to handle assertions
    present in J2SE v 1.4 source code. Set this to &quot;1.4&quot; to
    documents code that compiles using <code>&quot;javac -source
    1.4&quot;</code>.</td>
    1.4&quot;</code>.<br>
    A default value for this attribute can be provided using the magic
    <a
    href="../javacprops.html#source"><code>ant.build.javac.source</code></a>
    property.</td>
    <td align="center" valign="top">1.4+</td>
    <td align="center" valign="top">No</td>
  </tr>
--- a/docs/manual/conceptstypeslist.html
+++ b/docs/manual/conceptstypeslist.html
@@ -14,6 +14,7 @@
 <h3>Concepts</h3>
 <a href="clonevm.html">ant.build.clonevm</a><br>
 <a href="sysclasspath.html">build.sysclasspath</a><br>
 <a href="javacprops.html">Ant properties controlling javac</a><br>
 <a href="CoreTasks/common.html">Common Attributes</a><br>
 <h3>Core Types</h3>
--- a/docs/manual/javacprops.html
+++ b/docs/manual/javacprops.html
@@ -0,0 +1,39 @@
 <html>
 <head>
 <meta http-equiv="Content-Language" content="en-us">
 <link rel="stylesheet" type="text/css" href="stylesheets/style.css">
 <title>Properties controlling javac</title>
 </head>
 <body>
 <p>The source and target attributes of <code>&lt;javac&gt;</code>
 don't have any default values for historical reasons.  Since the
 underlying javac compiler's default depends on the JDK you use, you
 may encounter build files that don't explicitly set those attributes
 and that will no longer compile using a newer JDK.  If you cannot
 change the build file, Ant provides two properties that help you
 setting default values for these attributes.  If the attributes have
 been set explicitly, the properties listed here will be ignored.</p>
 <h2><a name="source">ant.build.javac.source</a></h2>
 <p><em>Since Ant 1.7</em></p>
 <p>Provides a default value for <code>&lt;javac&gt;</code>'s and
 <code>&lt;javadoc&gt;</code>'s source attribute.</p>
 <h2><a name="target">ant.build.javac.target</a></h2>
 <p><em>Since Ant 1.7</em></p>
 <p>Provides a default value for <code>&lt;javac&gt;</code>'s target
 attribute.</p>
 <hr>
 <p align="center">Copyright &copy; 2006 The Apache Software Foundation. All rights
 Reserved.</p>
 </body>
 </html>
--- a/src/main/org/apache/tools/ant/MagicNames.java
+++ b/src/main/org/apache/tools/ant/MagicNames.java
@@ -128,5 +128,21 @@ public final class MagicNames {
     */
    public static final String REGEXP_IMPL = "ant.regexp.regexpimpl";
    /**
     * property that provides the default value for javac's and
     * javadoc's source attribute.
     * @since Ant 1.7
     * Value: {@value}
     */
    public static final String BUILD_JAVAC_SOURCE = "ant.build.javac.source";
    /**
     * property that provides the default value for javac's target
     * attribute.
     * @since Ant 1.7
     * Value: {@value}
     */
    public static final String BUILD_JAVAC_TARGET = "ant.build.javac.target";
 }
--- a/src/main/org/apache/tools/ant/taskdefs/Javac.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Javac.java
@@ -20,6 +20,7 @@ package org.apache.tools.ant.taskdefs;
 import java.io.File;
 import org.apache.tools.ant.BuildException;
 import org.apache.tools.ant.DirectoryScanner;
 import org.apache.tools.ant.MagicNames;
 import org.apache.tools.ant.Project;
 import org.apache.tools.ant.taskdefs.compilers.CompilerAdapter;
 import org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory;
@@ -161,7 +162,8 @@ public class Javac extends MatchingTask {
     * @return value of source.
     */
    public String getSource() {
        return source;
        return source != null
            ? source : getProject().getProperty(MagicNames.BUILD_JAVAC_SOURCE);
    }
    /**
@@ -586,7 +588,9 @@ public class Javac extends MatchingTask {
     * @return the target VM
     */
    public String getTarget() {
        return targetAttribute;
        return targetAttribute != null
            ? targetAttribute
            : getProject().getProperty(MagicNames.BUILD_JAVAC_TARGET);
    }
    /**
--- a/src/main/org/apache/tools/ant/taskdefs/Javadoc.java
+++ b/src/main/org/apache/tools/ant/taskdefs/Javadoc.java
@@ -33,6 +33,7 @@ import java.util.StringTokenizer;
 import java.util.Vector;
 import org.apache.tools.ant.BuildException;
 import org.apache.tools.ant.DirectoryScanner;
 import org.apache.tools.ant.MagicNames;
 import org.apache.tools.ant.Project;
 import org.apache.tools.ant.ProjectComponent;
 import org.apache.tools.ant.Task;
@@ -1912,9 +1913,11 @@ public class Javadoc extends Task {
                }
            }
            if (source != null) {
            String sourceArg = source != null ? source 
                : getProject().getProperty(MagicNames.BUILD_JAVAC_SOURCE);
            if (sourceArg != null) {
                toExecute.createArgument().setValue("-source");
                toExecute.createArgument().setValue(source);
                toExecute.createArgument().setValue(sourceArg);
            }
            if (linksource && doclet == null) {
--- a/src/testcases/org/apache/tools/ant/taskdefs/JavacTest.java
+++ b/src/testcases/org/apache/tools/ant/taskdefs/JavacTest.java
@@ -1,5 +1,5 @@
 /*
 * Copyright  2001-2002,2004-2005 The Apache Software Foundation
 * Copyright  2001-2002,2004-2006 The Apache Software Foundation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
@@ -212,4 +212,33 @@ public class JavacTest extends TestCase {
        assertTrue(adapter instanceof JavacExternal);
    }
    public void testSourceNoDefault() {
        assertNull(javac.getSource());
    }
    public void testSourceWithDefault() {
        project.setNewProperty("ant.build.javac.source", "1.4");
        assertEquals("1.4", javac.getSource());
    }
    public void testSourceOverridesDefault() {
        project.setNewProperty("ant.build.javac.source", "1.4");
        javac.setSource("1.5");
        assertEquals("1.5", javac.getSource());
    }
    public void testTargetNoDefault() {
        assertNull(javac.getTarget());
    }
    public void testTargetWithDefault() {
        project.setNewProperty("ant.build.javac.target", "1.4");
        assertEquals("1.4", javac.getTarget());
    }
    public void testTargetOverridesDefault() {
        project.setNewProperty("ant.build.javac.target", "1.4");
        javac.setTarget("1.5");
        assertEquals("1.5", javac.getTarget());
    }
 }