/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.flex.compiler.internal.codegen.mxml;
import java.io.FilterWriter;
import org.apache.flex.compiler.codegen.mxml.IMXMLEmitter;
import org.apache.flex.compiler.definitions.IClassDefinition;
import org.apache.flex.compiler.internal.codegen.Emitter;
import org.apache.flex.compiler.internal.codegen.as.ASEmitterTokens;
import org.apache.flex.compiler.projects.ICompilerProject;
import org.apache.flex.compiler.tree.as.IASNode;
import org.apache.flex.compiler.tree.mxml.IMXMLArrayNode;
import org.apache.flex.compiler.tree.mxml.IMXMLBooleanNode;
import org.apache.flex.compiler.tree.mxml.IMXMLClassDefinitionNode;
import org.apache.flex.compiler.tree.mxml.IMXMLClassNode;
import org.apache.flex.compiler.tree.mxml.IMXMLComponentNode;
import org.apache.flex.compiler.tree.mxml.IMXMLDeclarationsNode;
import org.apache.flex.compiler.tree.mxml.IMXMLDocumentNode;
import org.apache.flex.compiler.tree.mxml.IMXMLEventSpecifierNode;
import org.apache.flex.compiler.tree.mxml.IMXMLFactoryNode;
import org.apache.flex.compiler.tree.mxml.IMXMLFileNode;
import org.apache.flex.compiler.tree.mxml.IMXMLInstanceNode;
import org.apache.flex.compiler.tree.mxml.IMXMLIntNode;
import org.apache.flex.compiler.tree.mxml.IMXMLLiteralNode;
import org.apache.flex.compiler.tree.mxml.IMXMLNode;
import org.apache.flex.compiler.tree.mxml.IMXMLNumberNode;
import org.apache.flex.compiler.tree.mxml.IMXMLPropertySpecifierNode;
import org.apache.flex.compiler.tree.mxml.IMXMLScriptNode;
import org.apache.flex.compiler.tree.mxml.IMXMLStringNode;
import org.apache.flex.compiler.tree.mxml.IMXMLStyleSpecifierNode;
import org.apache.flex.compiler.tree.mxml.IMXMLUintNode;
import org.apache.flex.compiler.visitor.IBlockWalker;
import org.apache.flex.compiler.visitor.mxml.IMXMLBlockWalker;
/**
* The base implementation for an MXML emitter.
*
* @author Erik de Bruin
*/
public class MXMLEmitter extends Emitter implements IMXMLEmitter
{
//--------------------------------------------------------------------------
// walkers
//--------------------------------------------------------------------------
protected IMXMLBlockWalker walker;
@Override
public IBlockWalker getMXMLWalker()
{
return (IBlockWalker) walker;
}
@Override
public void setMXMLWalker(IBlockWalker value)
{
walker = (IMXMLBlockWalker) value;
}
public MXMLEmitter(FilterWriter out)
{
super(out);
}
//--------------------------------------------------------------------------
@Override
public void emitDocumentHeader(IMXMLFileNode node)
{
IMXMLDocumentNode dnode = node.getDocumentNode();
IClassDefinition cdef = dnode
.getClassReference((ICompilerProject) walker.getProject());
write("<" + cdef.getBaseName());
emitPropertySpecifiers(dnode.getPropertySpecifierNodes(), true);
writeNewline(">", true);
}
@Override
public void emitDocumentFooter(IMXMLFileNode node)
{
IMXMLDocumentNode dnode = node.getDocumentNode();
IClassDefinition cdef = dnode
.getClassReference((ICompilerProject) walker.getProject());
writeNewline("", false);
write("</" + cdef.getBaseName() + ">");
}
//--------------------------------------------------------------------------
@Override
public void emitClass(IMXMLClassDefinitionNode node)
{
// fx:declarations
IMXMLDeclarationsNode[] dnodes = node.getDeclarationsNodes();
if (dnodes != null)
{
for (IMXMLDeclarationsNode dnode : dnodes)
{
getMXMLWalker().walk(dnode);
}
}
// fx:script
IMXMLScriptNode[] snodes = node.getScriptNodes();
if (snodes != null)
{
for (IMXMLScriptNode snode : snodes)
{
getMXMLWalker().walk(snode);
}
}
// "regular" tags
emitPropertySpecifiers(node.getPropertySpecifierNodes(), false);
}
//--------------------------------------------------------------------------
@Override
public void emitEventSpecifier(IMXMLEventSpecifierNode node)
{
}
@Override
public void emitInstance(IMXMLInstanceNode node)
{
IClassDefinition cdef = node
.getClassReference((ICompilerProject) getMXMLWalker()
.getProject());
String cname = cdef.getBaseName();
write("<");
write(cname);
if (node.getID() != null && node.getID() != "")
{
write(ASEmitterTokens.SPACE);
write("id");
write(ASEmitterTokens.EQUAL);
write("\"");
write(node.getID());
write("\"");
}
IMXMLPropertySpecifierNode[] pnodes = node.getPropertySpecifierNodes();
// attributes
emitPropertySpecifiers(pnodes, true);
write(">");
// child nodes
emitPropertySpecifiers(pnodes, false);
write("<");
write("/");
write(cname);
write(">");
}
@Override
public void emitPropertySpecifier(IMXMLPropertySpecifierNode node)
{
if (!isMXMLContentNode(node)) // only for attributes
{
write(node.getName());
write(ASEmitterTokens.EQUAL);
}
getMXMLWalker().walk(node.getInstanceNode());
}
@Override
public void emitStyleSpecifier(IMXMLStyleSpecifierNode node)
{
if (!isMXMLContentNode(node)) // only for attributes
{
write(node.getName());
write(ASEmitterTokens.EQUAL);
}
getMXMLWalker().walk(node.getInstanceNode());
}
@Override
public void emitScript(IMXMLScriptNode node)
{
write("<script><![CDATA[");
int len = node.getChildCount();
if (len > 0)
{
writeNewline("", true);
for (int i = 0; i < len; i++)
{
getMXMLWalker().walk(node.getChild(i));
if (i == len - 1)
indentPop();
writeNewline(ASEmitterTokens.SEMICOLON);
}
}
write("]]></script>");
}
//--------------------------------------------------------------------------
@Override
public void emitArray(IMXMLArrayNode node)
{
final int len = node.getChildCount();
for (int i = 0; i < len; i++)
{
IASNode child = node.getChild(i);
getMXMLWalker().walk(child);
if (child instanceof IMXMLInstanceNode && i < len - 1)
writeNewline();
}
}
@Override
public void emitBoolean(IMXMLBooleanNode node)
{
emitAttributeValue(node);
}
@Override
public void emitInt(IMXMLIntNode node)
{
emitAttributeValue(node);
}
@Override
public void emitNumber(IMXMLNumberNode node)
{
emitAttributeValue(node);
}
@Override
public void emitString(IMXMLStringNode node)
{
emitAttributeValue(node);
}
@Override
public void emitUint(IMXMLUintNode node)
{
emitAttributeValue(node);
}
//--------------------------------------------------------------------------
@Override
public void emitLiteral(IMXMLLiteralNode node)
{
write(node.getValue().toString());
}
//--------------------------------------------------------------------------
// Utils
//--------------------------------------------------------------------------
public void emitPropertySpecifiers(IMXMLPropertySpecifierNode[] nodes,
boolean emitAttributes)
{
if (nodes != null)
{
for (IMXMLPropertySpecifierNode cnode : nodes)
{
if (!isMXMLContentNode(cnode) && emitAttributes)
{
write(ASEmitterTokens.SPACE);
getMXMLWalker().walk(cnode);
}
else if (isMXMLContentNode(cnode) && !emitAttributes)
{
getMXMLWalker().walk(cnode);
}
}
}
}
protected void emitAttributeValue(IASNode node)
{
IMXMLLiteralNode cnode = (IMXMLLiteralNode) node.getChild(0);
if (cnode.getValue() != null)
{
write("\"");
getMXMLWalker().walk((IASNode) cnode); // Literal
write("\"");
}
}
protected boolean isMXMLContentNode(IMXMLNode node)
{
return node.getName().equals("mxmlContentFactory")
|| node.getName().equals("mxmlContent");
}
public void emitFactory(IMXMLFactoryNode node)
{
IASNode cnode = node.getChild(0);
write("\"");
if (cnode instanceof IMXMLClassNode)
{
write(((IMXMLClassNode)cnode).getValue(getMXMLWalker().getProject()).getQualifiedName());
}
write("\"");
}
public void emitComponent(IMXMLComponentNode node)
{
IASNode cnode = node.getChild(0);
write("<fx:Component>");
if (cnode instanceof IMXMLClassNode)
{
getMXMLWalker().walk((IASNode) cnode); // Literal
}
write("</fx:Component>");
}
}