costin 01/06/05 23:16:05
Modified: jasper34/generator/org/apache/jasper34/generator
GeneratorBase.java
Log:
The modified GeneratorBase, with individual methods for each hook
Revision Changes Path
1.2 +132 -9
jakarta-tomcat-jasper/jasper34/generator/org/apache/jasper34/generator/GeneratorBase.java
Index: GeneratorBase.java
===================================================================
RCS file:
/home/cvs/jakarta-tomcat-jasper/jasper34/generator/org/apache/jasper34/generator/GeneratorBase.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- GeneratorBase.java 2001/05/27 23:19:31 1.1
+++ GeneratorBase.java 2001/06/06 06:16:03 1.2
@@ -1,8 +1,4 @@
/*
- * $Header:
/home/cvs/jakarta-tomcat-jasper/jasper34/generator/org/apache/jasper34/generator/GeneratorBase.java,v
1.1 2001/05/27 23:19:31 costin Exp $
- * $Revision: 1.1 $
- * $Date: 2001/05/27 23:19:31 $
- *
* ====================================================================
*
* The Apache Software License, Version 1.1
@@ -62,21 +58,148 @@
package org.apache.jasper34.generator;
import org.apache.jasper34.core.*;
-import org.apache.jasper34.core.*;
import org.apache.jasper34.runtime.JasperException;
+
+import java.lang.reflect.*;
+
+import org.apache.jasper34.parser.*;
+import org.apache.jasper34.jsptree.*;
/**
* Helpful abstract base class that generators can extend.
*
* @author Anil K. Vijendran
+ * @author Costin Manolache
*/
-abstract class GeneratorBase implements Generator {
+public abstract class GeneratorBase {
protected JspCompilationContext ctxt;
+ Mark start, stop;
+ // protected CommentGenerator commentGenerator;
+
+ GeneratorBase() {
+ }
+
+ GeneratorBase( Mark start, Mark stop) {
+ this.start = start;
+ this.stop = stop;
+ }
+
+ // public void setCommentGenerator( CommentGenerator commentGenerator ) {
+ // this.commentGenerator=commentGenerator;
+ // }
- public void init(JspCompilationContext ctxt) throws JasperException {
- this.ctxt = ctxt;
+ public void setMark( Mark start, Mark stop) {
+ this.start = start;
+ this.stop = stop;
}
+
+ // -------------------- Generator hooks --------------------
+
+ public static final int CLASS_DECLARATION_HOOK = 0;
+ public static final int DESTROY_METHOD_HOOK = 1;
+ public static final int FILE_DECLARATION_HOOK = 2;
+ public static final int INIT_METHOD_HOOK = 3;
+ public static final int SERVICE_METHOD_HOOK = 4;
+ public static final int STATIC_INITIALIZER_HOOK = 5;
+
+ public static String hookNames[] = {
+ "generateClassDeclaration",
+ "generateDestroyMethod",
+ "generateFileDeclaration",
+ "generateInitMethod",
+ "generateServiceMethod",
+ "generateStaticInitializer"
+ };
+
+ static final int HOOK_COUNT=6;
+ public boolean hasHook( int hookId ) {
+ if( hooks==null ) initHooks();
+ return hooks[hookId];
+ }
+
+ // -------------------- New interface --------------------
+
+ public void generateClassDeclaration( ServletWriter out )
+ throws JasperException
+ {
+ }
+
+ public void generateDestroyMethod( ServletWriter out )
+ throws JasperException
+ {
+ }
+ public void generateFileDeclaration( ServletWriter out )
+ throws JasperException
+ {
+ }
+ public void generateInitMethod( ServletWriter out )
+ throws JasperException
+ {
+ }
+ public void generateServiceMethod( ServletWriter out )
+ throws JasperException
+ {
+ }
+ public void generateStaticInitializer( ServletWriter out )
+ throws JasperException
+ {
+ }
+
+ // -------------------- Old interface --------------------
+ /*
+ * This is really a no-op.
+ */
public boolean generateCoordinates(Class phase) {
- return true;
+ return true; // generator.generateCoordinates(phase);
+ // will be overriden if someone needs to
+ }
+
+ // void init(JspCompilationContext ctxt) throws JasperException;
+ public void init(JspCompilationContext ctxt)
+ throws JasperException
+ {
+ this.ctxt = ctxt;
+ // generator.init(ctxt);
+ // will be overriden
+ }
+
+ // -------------------- Utils --------------------
+ private boolean hooks[]=null;
+
+ private void initHooks() {
+ hooks=new boolean[ HOOK_COUNT ];
+ for( int i=1; i<HOOK_COUNT; i++ ) {
+ if( hasHook( this, hookNames[i] ) )
+ hooks[i]=true;
+ else
+ hooks[i]=false;
+ }
}
+
+ private boolean hasHook( Object obj, String methodN ) {
+ try {
+ Method myMethods[]=obj.getClass().getMethods();
+ for( int i=0; i< myMethods.length; i++ ) {
+ if( methodN.equals ( myMethods[i].getName() )) {
+ // check if it's overriden
+ Class declaring=myMethods[i].getDeclaringClass();
+ Class parentOfDeclaring=declaring.getSuperclass();
+ // this works only if the base class doesn't extend
+ // another class.
+
+ // if the method is declared in a top level class
+ // like BaseInterceptor parent is Object, otherwise
+ // parent is BaseInterceptor or an intermediate class
+ if( ! "java.lang.Object".
+ equals(parentOfDeclaring.getName() )) {
+ return true;
+ }
+ }
+ }
+ } catch ( Exception ex ) {
+ ex.printStackTrace();
+ }
+ return false;
+ }
+
}
