com.sun.tools.oldlets.internal.toolkit.builders.AbstractBuilder Maven / Gradle / Ivy
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* published by the Free Software Foundation. Oracle designates this
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* by Oracle in the LICENSE file that accompanied this code.
*
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* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package com.sun.tools.oldlets.internal.toolkit.builders;
import java.io.*;
import java.lang.reflect.*;
import java.util.*;
import com.sun.tools.oldlets.internal.toolkit.*;
import com.sun.tools.oldlets.internal.toolkit.util.*;
/**
* The superclass for all builders. A builder is a class that provides
* the structure and content of API documentation. A builder is completely
* doclet independent which means that any doclet can use builders to
* construct documentation, as long as it impelements the appropriate
* writer interfaces. For example, if a doclet wanted to use
* {@link ConstantsSummaryBuilder} to build a constant summary, all it has to
* do is implement the ConstantsSummaryWriter interface and pass it to the
* builder using a WriterFactory.
*
* This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.
*
* @author Jamie Ho
* @since 1.5
*/
public abstract class AbstractBuilder {
public static class Context {
/**
* The configuration used in this run of the doclet.
*/
final Configuration configuration;
/**
* Keep track of which packages we have seen for
* efficiency purposes. We don't want to copy the
* doc files multiple times for a single package.
*/
final Set containingPackagesSeen;
/**
* Shared parser for the builder XML file
*/
final LayoutParser layoutParser;
Context(Configuration configuration,
Set containingPackagesSeen,
LayoutParser layoutParser) {
this.configuration = configuration;
this.containingPackagesSeen = containingPackagesSeen;
this.layoutParser = layoutParser;
}
}
/**
* The configuration used in this run of the doclet.
*/
protected final Configuration configuration;
/**
* Keep track of which packages we have seen for
* efficiency purposes. We don't want to copy the
* doc files multiple times for a single package.
*/
protected final Set containingPackagesSeen;
protected final LayoutParser layoutParser;
/**
* True if we want to print debug output.
*/
protected static final boolean DEBUG = false;
/**
* Construct a Builder.
* @param configuration the configuration used in this run
* of the doclet.
*/
public AbstractBuilder(Context c) {
this.configuration = c.configuration;
this.containingPackagesSeen = c.containingPackagesSeen;
this.layoutParser = c.layoutParser;
}
/**
* Return the name of this builder.
*
* @return the name of the builder.
*/
public abstract String getName();
/**
* Build the documentation.
*
* @throws IOException there was a problem writing the output.
*/
public abstract void build() throws IOException;
/**
* Build the documentation, as specified by the given XML element.
*
* @param node the XML element that specifies which component to document.
* @param contentTree content tree to which the documentation will be added
*/
protected void build(XMLNode node, Content contentTree) {
String component = node.name;
try {
invokeMethod("build" + component,
new Class[]{XMLNode.class, Content.class},
new Object[]{node, contentTree});
} catch (NoSuchMethodException e) {
e.printStackTrace();
configuration.root.printError("Unknown element: " + component);
throw new DocletAbortException(e);
} catch (InvocationTargetException e) {
Throwable cause = e.getCause();
if (cause instanceof FatalError) {
throw (FatalError) cause;
} else if (cause instanceof DocletAbortException) {
throw (DocletAbortException) cause;
} else {
throw new DocletAbortException(cause);
}
} catch (Exception e) {
e.printStackTrace();
configuration.root.printError("Exception " +
e.getClass().getName() +
" thrown while processing element: " + component);
throw new DocletAbortException(e);
}
}
/**
* Build the documentation, as specified by the children of the given XML element.
*
* @param node the XML element that specifies which components to document.
* @param contentTree content tree to which the documentation will be added
*/
protected void buildChildren(XMLNode node, Content contentTree) {
for (XMLNode child : node.children)
build(child, contentTree);
}
/**
* Given the name and parameters, invoke the method in the builder. This
* method is required to invoke the appropriate build method as instructed
* by the builder XML file.
*
* @param methodName the name of the method that we would like to invoke.
* @param paramClasses the types for each parameter.
* @param params the parameters of the method.
*/
protected void invokeMethod(String methodName, Class[] paramClasses,
Object[] params)
throws Exception {
if (DEBUG) {
configuration.root.printError("DEBUG: " + this.getClass().getName() + "." + methodName);
}
Method method = this.getClass().getMethod(methodName, paramClasses);
method.invoke(this, params);
}
}