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jossonsmith
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Merge with /trunks for exposing Visitor as extension points
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8 files changed

+374
-7
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8 files changed

+374
-7
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‎plugin.xml‎

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Original file line numberDiff line numberDiff line change
@@ -8,6 +8,13 @@
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<extension-point name="Extended Compiler"
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id="extendedCompiler"
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schema="schema/extendedCompiler.exsd"/>
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<!-- =================================================================================== -->
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<!-- Extension Point: Extended AST Script Visitor -->
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<!-- =================================================================================== -->
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<extension-point name="Extended AST Script Visitor"
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id="extendedASTScriptVisitor"
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schema="schema/extendedASTScriptVisitor.exsd"/>
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<extension
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id="net.sf.j2s.core.j2scompiler"
@@ -54,4 +61,14 @@
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</builder>
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</extension>
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<extension
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point="net.sf.j2s.core.extendedASTScriptVisitor">
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<extendedASTScriptVisitor
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class="net.sf.j2s.core.compiler.ASTExtendedVisitor"
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id="BasicASTScriptVisitor"/>
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<extendedASTScriptVisitor
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class="net.sf.j2s.core.compiler.SWTExtendedVisitor"
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id="SWTASTScriptVisitor"/>
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</extension>
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</plugin>

‎schema/extendedASTScriptVisitor.exsd‎

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<?xml version='1.0' encoding='UTF-8'?>
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<!-- Schema file written by PDE -->
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<schema targetNamespace="net.sf.j2s.core">
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<annotation>
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<appInfo>
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<meta.schema plugin="net.sf.j2s.core" id="j2sVisitor" name="Java2Script AST Script Visitor"/>
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</appInfo>
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<documentation>
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Extended AST Script Visitor for Java2Script Compiler
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</documentation>
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</annotation>
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<element name="extension">
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<complexType>
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<sequence>
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<element ref="extendedASTScriptVisitor" minOccurs="0" maxOccurs="unbounded"/>
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</sequence>
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<attribute name="point" type="string" use="required">
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<annotation>
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<documentation>
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</documentation>
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</annotation>
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</attribute>
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<attribute name="id" type="string">
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<annotation>
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<documentation>
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</documentation>
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</annotation>
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</attribute>
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<attribute name="name" type="string">
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<annotation>
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<documentation>
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</documentation>
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<appInfo>
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<meta.attribute translatable="true"/>
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</appInfo>
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</annotation>
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</attribute>
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</complexType>
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</element>
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<element name="extendedASTScriptVisitor">
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<complexType>
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<attribute name="id" type="string" use="required">
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<annotation>
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<documentation>
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</documentation>
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</annotation>
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</attribute>
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<attribute name="class" type="string" use="required">
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<annotation>
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<documentation>
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</documentation>
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<appInfo>
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<meta.attribute kind="java"/>
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</appInfo>
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</annotation>
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</attribute>
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</complexType>
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</element>
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<annotation>
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<appInfo>
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<meta.section type="since"/>
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</appInfo>
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<documentation>
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Java2Script 1.0.0 M4
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</documentation>
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</annotation>
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<annotation>
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<appInfo>
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<meta.section type="examples"/>
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</appInfo>
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<documentation>
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</documentation>
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</annotation>
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<annotation>
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<appInfo>
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<meta.section type="apiInfo"/>
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</appInfo>
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<documentation>
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The class must inherit ASTScriptVisitor.
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</documentation>
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</annotation>
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<annotation>
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<appInfo>
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<meta.section type="implementation"/>
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</appInfo>
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<documentation>
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When visiting AST tree, user can choose one of ASTScriptVisitors defined by this extension point.
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</documentation>
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</annotation>
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<annotation>
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<appInfo>
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<meta.section type="copyright"/>
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</appInfo>
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<documentation>
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j2s.sourceforge.net
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</documentation>
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</annotation>
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</schema>

‎src/net/sf/j2s/core/astvisitors/ASTKeywordParser.java‎

Lines changed: 13 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1064,7 +1064,19 @@ public void endVisit(IfStatement node) {
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10651065
public boolean visit(IfStatement node) {
10661066
buffer.append("if (");
1067-
node.getExpression().accept(this);
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/**
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* Boolean x = Boolean.FALSE;
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*
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* if( x ){
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*
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* }
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* should converted to
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* if(x.booleanValue()){
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*
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* }
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*/
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boxingNode(node.getExpression());
1079+
// node.getExpression().accept(this);
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buffer.append(") ");
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node.getThenStatement().accept(this);
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if (node.getElseStatement() != null) {

‎src/net/sf/j2s/core/compiler/ASTExtendedVisitor.java‎

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@@ -0,0 +1,37 @@
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/*******************************************************************************
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* Java2Script Pacemaker (http://j2s.sourceforge.net)
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*
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* Copyright (c) 2006 ognize.com and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* ognize.com - initial API and implementation
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*******************************************************************************/
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package net.sf.j2s.core.compiler;
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import net.sf.j2s.core.astvisitors.ASTScriptVisitor;
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import net.sf.j2s.core.astvisitors.DependencyASTVisitor;
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/**
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* @author zhou renjian
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*
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* 2006-10-26
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*/
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public class ASTExtendedVisitor implements IExtendedVisitor {
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/* (non-Javadoc)
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* @see net.sf.j2s.core.compiler.IExtendedVisitor#getScriptVisitor()
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*/
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public ASTScriptVisitor getScriptVisitor() {
29+
return new ASTScriptVisitor();
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}
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/* (non-Javadoc)
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* @see net.sf.j2s.core.compiler.IExtendedVisitor#getDependencyVisitor()
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*/
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public DependencyASTVisitor getDependencyVisitor() {
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return new DependencyASTVisitor();
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}
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}

‎src/net/sf/j2s/core/compiler/ExtendedVisitors.java‎

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/*******************************************************************************
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* Java2Script Pacemaker (http://j2s.sourceforge.net)
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*
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* Copyright (c) 2006 ognize.com and others.
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* All rights reserved. This program and the accompanying materials
6+
* are made available under the terms of the Eclipse Public License v1.0
7+
* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* ognize.com - initial API and implementation
12+
*******************************************************************************/
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package net.sf.j2s.core.compiler;
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import java.util.HashMap;
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import java.util.Map;
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import org.eclipse.core.runtime.CoreException;
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import org.eclipse.core.runtime.IConfigurationElement;
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import org.eclipse.core.runtime.IExtension;
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import org.eclipse.core.runtime.IExtensionPoint;
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import org.eclipse.core.runtime.IExtensionRegistry;
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import org.eclipse.core.runtime.Platform;
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/**
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* @author zhou renjian
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*
27+
* 2006-10-26
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*/
29+
public class ExtendedVisitors {
30+
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public static Map visitors = new HashMap();
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private static boolean isExtensionPointsChecked = false;
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private static void checkExtensionPoints() {
36+
if (isExtensionPointsChecked) {
37+
return;
38+
}
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isExtensionPointsChecked = true;
40+
IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry();
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IExtensionPoint extensionPoint = extensionRegistry
42+
.getExtensionPoint("net.sf.j2s.core.extendedASTScriptVisitor"); //$NON-NLS-1$
43+
if (extensionPoint == null) {
44+
return;
45+
}
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IExtension[] extensions = extensionPoint.getExtensions();
47+
// For each extension ...
48+
for (int i = 0; i < extensions.length; i++) {
49+
IExtension extension = extensions[i];
50+
IConfigurationElement[] elements = extension
51+
.getConfigurationElements();
52+
// For each member of the extension ...
53+
for (int j = 0; j < elements.length; j++) {
54+
IConfigurationElement element = elements[j];
55+
if ("extendedASTScriptVisitor".equals(element.getName())) { //$NON-NLS-1$
56+
String className = element.getAttribute("class"); //$NON-NLS-1$
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String id = element.getAttribute("id"); //$NON-NLS-1$
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if (className != null && className.trim().length() != 0
59+
&& id != null && id.trim().length() != 0) {
60+
try {
61+
Object callback = element
62+
.createExecutableExtension("class");
63+
if (callback instanceof IExtendedVisitor) {
64+
visitors.put(id.trim(), callback);
65+
}
66+
} catch (CoreException e) {
67+
e.printStackTrace();
68+
}
69+
}
70+
}
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}
72+
}
73+
}
74+
75+
public static void register(String visitorID, IExtendedVisitor visitor) {
76+
if (visitorID != null && visitorID.trim().length() != 0
77+
&& visitor != null) {
78+
visitors.put(visitorID, visitor);
79+
}
80+
}
81+
82+
public static IExtendedVisitor deregister(String visitorID) {
83+
if (visitorID != null && visitorID.trim().length() != 0) {
84+
return (IExtendedVisitor) visitors.remove(visitorID);
85+
}
86+
return null;
87+
}
88+
89+
public static IExtendedVisitor[] getExistedVisitors() {
90+
checkExtensionPoints();
91+
return (IExtendedVisitor[]) visitors.values().toArray(new IExtendedVisitor[0]);
92+
}
93+
94+
public static IExtendedVisitor getExistedVisitor(String id) {
95+
checkExtensionPoints();
96+
return (IExtendedVisitor) visitors.get(id);
97+
}
98+
99+
}

‎src/net/sf/j2s/core/compiler/IExtendedVisitor.java‎

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/*******************************************************************************
2+
* Java2Script Pacemaker (http://j2s.sourceforge.net)
3+
*
4+
* Copyright (c) 2006 ognize.com and others.
5+
* All rights reserved. This program and the accompanying materials
6+
* are made available under the terms of the Eclipse Public License v1.0
7+
* which accompanies this distribution, and is available at
8+
* http://www.eclipse.org/legal/epl-v10.html
9+
*
10+
* Contributors:
11+
* ognize.com - initial API and implementation
12+
*******************************************************************************/
13+
14+
package net.sf.j2s.core.compiler;
15+
16+
import net.sf.j2s.core.astvisitors.ASTScriptVisitor;
17+
import net.sf.j2s.core.astvisitors.DependencyASTVisitor;
18+
19+
/**
20+
* @author zhou renjian
21+
*
22+
* 2006-10-26
23+
*/
24+
public interface IExtendedVisitor {
25+
/**
26+
* Return visitor that generate scripts.
27+
* @return
28+
*/
29+
public ASTScriptVisitor getScriptVisitor();
30+
31+
/**
32+
* Return visitor for class dependencies.
33+
* @return
34+
*/
35+
public DependencyASTVisitor getDependencyVisitor();
36+
}

‎src/net/sf/j2s/core/compiler/Java2ScriptCompiler.java‎

Lines changed: 21 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -132,12 +132,22 @@ public void compile(ICompilationUnit[] sourceUnits, IContainer binaryFolder) {
132132
root = (CompilationUnit) astParser.createAST(null);
133133

134134
DependencyASTVisitor dvisitor = null;
135-
if ("ASTScriptVisitor".equals(props.getProperty("j2s.compiler.visitor"))) {
135+
String visitorID = props.getProperty("j2s.compiler.visitor");
136+
IExtendedVisitor extVisitor = null;
137+
if ("ASTScriptVisitor".equals(visitorID)) {
136138
dvisitor = new DependencyASTVisitor();
137-
} else if ("SWTScriptVisitor".equals(props.getProperty("j2s.compiler.visitor"))) {
139+
} else if ("SWTScriptVisitor".equals(visitorID)) {
138140
dvisitor = new SWTDependencyASTVisitor();
139141
} else {
140-
dvisitor = new SWTDependencyASTVisitor();
142+
if (visitorID != null && visitorID.length() != 0) {
143+
extVisitor = ExtendedVisitors.getExistedVisitor(visitorID);
144+
if (extVisitor != null) {
145+
dvisitor = extVisitor.getDependencyVisitor();
146+
}
147+
}
148+
if (dvisitor == null) {
149+
dvisitor = new SWTDependencyASTVisitor();
150+
}
141151
}
142152
boolean errorOccurs = false;
143153
try {
@@ -167,12 +177,17 @@ public void compile(ICompilationUnit[] sourceUnits, IContainer binaryFolder) {
167177
}
168178

169179
ASTScriptVisitor visitor = null;
170-
if ("ASTScriptVisitor".equals(props.getProperty("j2s.compiler.visitor"))) {
180+
if ("ASTScriptVisitor".equals(visitorID)) {
171181
visitor = new ASTScriptVisitor();
172-
} else if ("SWTScriptVisitor".equals(props.getProperty("j2s.compiler.visitor"))) {
182+
} else if ("SWTScriptVisitor".equals(visitorID)) {
173183
visitor = new SWTScriptVisitor();
174184
} else {
175-
visitor = new SWTScriptVisitor();
185+
if (extVisitor != null) {
186+
visitor = extVisitor.getScriptVisitor();
187+
}
188+
if (visitor == null) {
189+
visitor = new SWTScriptVisitor();
190+
}
176191
}
177192
boolean isDebugging = "debug".equals(props.getProperty("j2s.compiler.mode"));
178193
visitor.setDebugging(isDebugging);

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