private String getFullname(Tag tag, String defaultValue) {
if (tag != null) {
String fn = tag.getFullname();
if (StringUtil.isEmpty(fn)) fn = tag.getTagLibTag().getFullName();
if (!StringUtil.isEmpty(fn)) return fn;
}
return defaultValue;
}
/**
* Prueft ob das angegebene Tag innerhalb seiner Ebene einmalig ist oder nicht.
*
* @param tag Ausgangspunkt, nach diesem tag darf das angegebene nicht vorkommen.
* @return kommt das Tag vor.
*/
public static boolean hasSisterTagWithSameName(Tag tag) {
Body body = (Body) tag.getParent();
List<Statement> stats = body.getStatements();
Iterator<Statement> it = stats.iterator();
Statement other;
String name = tag.getTagLibTag().getName();
while (it.hasNext()) {
other = it.next();
if (other != tag
&& other instanceof Tag
&& ((Tag) other).getTagLibTag().getName().equals(name)) return true;
}
return false;
}
/**
* Gibt das uebergeordnete CFXD Tag Element zurueck, falls dies nicht existiert wird null
* zurueckgegeben.
*
* @param el Element von dem das parent Element zurueckgegeben werden soll.
* @return uebergeordnete CFXD Tag Element
*/
public static Tag getParentTag(Tag tag) {
Statement p = tag.getParent();
if (p == null) return null;
p = p.getParent();
if (p instanceof Tag) return (Tag) p;
return null;
}
/**
* replace src with trg
*
* @param src
* @param trg
*/
public static void replace(Tag src, Tag trg, boolean moveBody) {
trg.setParent(src.getParent());
Body p = (Body) src.getParent();
List<Statement> stats = p.getStatements();
Iterator<Statement> it = stats.iterator();
Statement stat;
int count = 0;
while (it.hasNext()) {
stat = it.next();
if (stat == src) {
if (moveBody && src.getBody() != null) src.getBody().setParent(trg);
stats.set(count, trg);
break;
}
count++;
}
}
public static boolean isLiteralAttribute(
Tag tag, Attribute attr, short type, boolean required, boolean throwWhenNot)
throws EvaluatorException {
String strType = "/constant";
if (attr != null && !isNull(attr.getValue())) {
switch (type) {
case TYPE_ALL:
if (attr.getValue() instanceof Literal) return true;
break;
case TYPE_BOOLEAN:
if (CastBoolean.toExprBoolean(attr.getValue()) instanceof LitBoolean) return true;
strType = " boolean";
break;
case TYPE_NUMERIC:
if (CastDouble.toExprDouble(attr.getValue()) instanceof LitDouble) return true;
strType = " numeric";
break;
case TYPE_STRING:
if (CastString.toExprString(attr.getValue()) instanceof LitString) return true;
strType = " string";
break;
}
if (!throwWhenNot) return false;
throw new EvaluatorException(
"Attribute ["
+ attr.getName()
+ "] of the Tag ["
+ tag.getFullname()
+ "] must be a literal"
+ strType
+ " value. "
+ "attributes java class type "
+ attr.getValue().getClass().getName());
}
if (required) {
if (!throwWhenNot) return false;
throw new EvaluatorException(
"Attribute [" + attr.getName() + "] of the Tag [" + tag.getFullname() + "] is required");
}
return false;
}
/**
* Gibt ein uebergeordnetes Tag mit dem uebergebenen Full-Name (Namespace und Name) zurueck, falls
* ein solches existiert, andernfalls wird null zurueckgegeben.
*
* @param el Startelement, von wo aus gesucht werden soll.
* @param fullName Name des gesuchten Tags.
* @return uebergeornetes Element oder null.
*/
public static Tag getAncestorTag(Tag tag, String fullName) {
Statement parent = tag;
while (true) {
parent = parent.getParent();
if (parent == null) return null;
if (parent instanceof Tag) {
tag = (Tag) parent;
if (tag.getFullname().equalsIgnoreCase(fullName)) return tag;
}
}
}
@Override
public void evaluate(Tag tag, TagLibTag libTag) throws EvaluatorException {
// check parent
Body body = null;
String compName = Property.getComponentName(tag);
boolean isCompChild = false;
Tag p = ASMUtil.getParentTag(tag);
if (p != null && (p instanceof TagComponent || getFullname(p, "").equalsIgnoreCase(compName))) {
isCompChild = true;
body = p.getBody();
}
Tag pp = p != null ? ASMUtil.getParentTag(p) : null;
if (!isCompChild
&& pp != null
&& (p instanceof TagComponent || getFullname(pp, "").equalsIgnoreCase(compName))) {
isCompChild = true;
body = pp.getBody();
}
if (!isCompChild) {
throw new EvaluatorException(
"Wrong Context for the the static constructor, "
+ "a static constructor must inside a component body.");
}
// Body body=(Body) tag.getParent();
List<Statement> children = tag.getBody().getStatements();
// remove that tag from parent
ASMUtil.remove(tag);
StaticBody sb = getStaticBody(body);
ASMUtil.addStatements(sb, children);
}
public static void removeLiterlChildren(Tag tag, boolean recursive) {
Body body = tag.getBody();
if (body != null) {
List<Statement> list = body.getStatements();
Statement[] stats = list.toArray(new Statement[list.size()]);
PrintOut po;
Tag t;
for (int i = 0; i < stats.length; i++) {
if (stats[i] instanceof PrintOut) {
po = (PrintOut) stats[i];
if (po.getExpr() instanceof Literal) {
body.getStatements().remove(po);
}
} else if (recursive && stats[i] instanceof Tag) {
t = (Tag) stats[i];
if (t.getTagLibTag().isAllowRemovingLiteral()) {
removeLiterlChildren(t, recursive);
}
}
}
}
}
/**
* Prueft ob das das angegebene Tag in der gleichen Ebene nach dem angegebenen Tag vorkommt.
*
* @param tag Ausgangspunkt, nach diesem tag darf das angegebene nicht vorkommen.
* @param nameToFind Tag Name der nicht vorkommen darf
* @return kommt das Tag vor.
*/
public static boolean hasSisterTagAfter(Tag tag, String nameToFind) {
Body body = (Body) tag.getParent();
List<Statement> stats = body.getStatements();
Iterator<Statement> it = stats.iterator();
Statement other;
boolean isAfter = false;
while (it.hasNext()) {
other = it.next();
if (other instanceof Tag) {
if (isAfter) {
if (((Tag) other).getTagLibTag().getName().equals(nameToFind)) return true;
} else if (other == tag) isAfter = true;
}
}
return false;
}
public static boolean isLiteralAttribute(
Tag tag, String attrName, short type, boolean required, boolean throwWhenNot)
throws EvaluatorException {
return isLiteralAttribute(tag, tag.getAttribute(attrName), type, required, throwWhenNot);
}
/**
* remove this tag from his parent body
*
* @param tag
*/
public static void remove(Tag tag) {
Body body = (Body) tag.getParent();
body.getStatements().remove(tag);
}
/**
* extract the content of a attribut
*
* @param cfxdTag
* @param attrName
* @return attribute value
* @throws EvaluatorException
*/
public static Literal getAttributeLiteral(Tag tag, String attrName, Literal defaultValue) {
Attribute attr = tag.getAttribute(attrName);
if (attr != null && attr.getValue() instanceof Literal) return ((Literal) attr.getValue());
return defaultValue;
}
/**
* extract the content of a attribut
*
* @param cfxdTag
* @param attrName
* @return attribute value
* @throws EvaluatorException
*/
public static Literal getAttributeLiteral(Tag tag, String attrName) throws EvaluatorException {
Attribute attr = tag.getAttribute(attrName);
if (attr != null && attr.getValue() instanceof Literal) return ((Literal) attr.getValue());
throw new EvaluatorException("attribute [" + attrName + "] must be a constant value");
}
public static boolean isParentTag(Tag tag, Class clazz) {
Tag p = getParentTag(tag);
if (p == null) return false;
return p.getClass() == clazz;
}
public static boolean isParentTag(Tag tag, String fullName) {
Tag p = getParentTag(tag);
if (p == null) return false;
return p.getFullname().equalsIgnoreCase(fullName);
}