public static Boolean toBoolean(Attribute attr, int line, Boolean defaultValue) {
if (attr == null) return defaultValue;
if (attr.getValue() instanceof Literal) {
Boolean b = ((Literal) attr.getValue()).getBoolean(null);
if (b != null) return b;
}
return defaultValue;
}
public static Boolean toBoolean(Attribute attr, Position start) throws BytecodeException {
if (attr == null) throw new BytecodeException("attribute does not exist", start);
if (attr.getValue() instanceof Literal) {
Boolean b = ((Literal) attr.getValue()).getBoolean(null);
if (b != null) return b;
}
throw new BytecodeException(
"attribute [" + attr.getName() + "] must be a constant boolean value", start);
}
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;
}
/**
* 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");
}