public static Operation newOperation(SourceRange sourceRange, Operation... ops)
throws SyntaxException {
assert (ops.length == 1);
Operation result = null;
// Attempt to optimize this operation.
if (ops[0] instanceof Element) {
try {
LongProperty a = (LongProperty) ops[0];
result = execute(a);
} catch (ClassCastException cce) {
throw new EvaluationException(MessageUtils.format(MSG_INVALID_ARGS_BITNOT), sourceRange);
} catch (EvaluationException ee) {
throw SyntaxException.create(sourceRange, ee);
}
} else {
result = new BitNot(sourceRange, ops);
}
return result;
}
@Override
public Element execute(Context context) {
try {
Element[] args = calculateArgs(context);
LongProperty a = (LongProperty) args[0];
return execute(a);
} catch (ClassCastException cce) {
throw new EvaluationException(MessageUtils.format(MSG_INVALID_ARGS_BITNOT), sourceRange);
}
}
@Override
public Element execute(Context context) {
// Look up the variable.
Element result = context.getVariable(identifier);
// Return an error if the variable doesn't exist.
if (result == null && !lookupOnly) {
throw new EvaluationException(
MessageUtils.format(MSG_UNDEFINED_VAR, identifier), sourceRange, context);
}
return result;
}
/**
* Associate the given type with the given name within this ObjectContext. This will throw an
* EvaluationException if the type is already defined.
*
* @param name name to associate to the type
* @param fullType data type to use for the definition
* @param template template where the type is defined (used for error handling)
* @param sourceRange location in the template where the type is defined (used for error handling)
* @throws EvaluationException if there is already a type associated with the given name
*/
public void put(String name, FullType fullType, Template template, SourceRange sourceRange)
throws EvaluationException {
assert (name != null);
assert (fullType != null);
// Ensure that all referenced types are already defined. This must be
// done before adding this type to the table to avoid type definition
// loops.
fullType.verifySubtypesDefined(this);
// Set the type in the types hash.
FullType previous = types.put(name, fullType);
// Oops, the type was already defined. Create a descriptive error
// message and abort the processing.
if (previous != null) {
String msg =
MessageUtils.format(
MSG_DUPLICATE_TYPE, name, previous.getSource(), previous.getSourceRange());
throw new EvaluationException(msg);
}
}