package railo.transformer.cfml.evaluator.impl;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import railo.commons.lang.IDGenerator;
import railo.commons.lang.Md5;
import railo.runtime.exp.PageRuntimeException;
import railo.runtime.op.Caster;
import railo.transformer.bytecode.Page;
import railo.transformer.bytecode.expression.Expression;
import railo.transformer.bytecode.literal.LitString;
import railo.transformer.bytecode.op.OpString;
import railo.transformer.bytecode.statement.tag.Attribute;
import railo.transformer.bytecode.statement.tag.Tag;
import railo.transformer.bytecode.util.ASMUtil;
import railo.transformer.cfml.evaluator.EvaluatorException;
import railo.transformer.cfml.evaluator.EvaluatorSupport;
import railo.transformer.library.function.FunctionLib;
import railo.transformer.library.tag.TagLibTag;
public final class Sprite extends EvaluatorSupport {
private static final Expression DELIMITER = LitString.toExprString(",");
private static Map<String,Previous> sprites=new HashMap<String,Previous>();
/**
*
* @see railo.transformer.cfml.evaluator.EvaluatorSupport#evaluate(railo.transformer.bytecode.statement.tag.Tag, railo.transformer.library.tag.TagLibTag, railo.transformer.library.function.FunctionLib[])
*/
public void evaluate(Tag tag,TagLibTag tagLibTag,FunctionLib[] flibs) throws EvaluatorException {
String id="sprite_"+IDGenerator.intId();
try {
Page page = ASMUtil.getAncestorPage(tag);
String key=Md5.getDigestAsString(Thread.currentThread().getId()+":"+page.getSource());
Expression src = tag.getAttribute("src").getValue();
// get data from previous sprites
Previous previous = sprites.get(key);
if(previous!=null) {
previous.tag.removeAttribute("_ids");
previous.tag.removeAttribute("_srcs");
previous.tag=tag;
}
else {
sprites.put(key, previous = new Previous(tag));
}
previous.ids.add(id);
if(previous.src==null)previous.src=src;
else {
previous.src=OpString.toExprString(previous.src,DELIMITER);
previous.src=OpString.toExprString(previous.src,src);
}
tag.addAttribute(
new Attribute(
false,
"_id",
LitString.toExprString(id),
"string"
));
tag.addAttribute(
new Attribute(
false,
"_ids",
LitString.toExprString(railo.runtime.type.util.ListUtil.listToList(previous.ids, ",")),
"string"
));
tag.addAttribute(
new Attribute(
false,
"_srcs",
previous.src,
"string"
));
}
catch (Throwable e) {// TODO handle Excpetion much more precise
throw new PageRuntimeException(Caster.toPageException(e));
}
}
private static class Previous {
public Previous(Tag tag) {
this.tag=tag;
}
private List<String> ids=new ArrayList<String>();
private Expression src=null;
private Tag tag;
}
}