@Override
public Result<IValue> fieldSelect(Field[] selectedFields) {
int nFields = selectedFields.length;
int fieldIndices[] = new int[nFields];
Type baseType = this.getType();
for (int i = 0; i < nFields; i++) {
Field f = selectedFields[i];
if (f.isIndex()) {
fieldIndices[i] =
((IInteger) f.getFieldIndex().interpret(this.ctx.getEvaluator()).getValue()).intValue();
} else {
String fieldName = org.rascalmpl.interpreter.utils.Names.name(f.getFieldName());
try {
fieldIndices[i] = baseType.getFieldIndex(fieldName);
} catch (UndeclaredFieldException e) {
throw new UndeclaredFieldError(fieldName, baseType, ctx.getCurrentAST());
}
}
if (fieldIndices[i] < 0 || fieldIndices[i] > baseType.getArity()) {
throw org.rascalmpl.interpreter.utils.RuntimeExceptionFactory.indexOutOfBounds(
ValueFactoryFactory.getValueFactory().integer(fieldIndices[i]),
ctx.getCurrentAST(),
ctx.getStackTrace());
}
}
return this.fieldSelect(fieldIndices);
}
@Override
@SuppressWarnings("unchecked")
public <U extends IValue, V extends IValue> Result<U> subscript(Result<?>[] subscripts) {
if (subscripts.length > 1) {
throw new UnsupportedSubscriptArityError(getType(), subscripts.length, ctx.getCurrentAST());
}
Result<IValue> subsBase = (Result<IValue>) subscripts[0];
if (subsBase == null)
/*
* Wild card not allowed as tuple subscript
*/
throw new UnsupportedSubscriptError(type, null, ctx.getCurrentAST());
if (!subsBase.getType().isIntegerType()) {
throw new UnsupportedSubscriptError(
getTypeFactory().integerType(), subsBase.getType(), ctx.getCurrentAST());
}
IInteger index = (IInteger) subsBase.getValue();
if (index.intValue() >= getValue().arity()) {
throw RuntimeExceptionFactory.indexOutOfBounds(
index, ctx.getCurrentAST(), ctx.getStackTrace());
}
Type elementType = getType().getFieldType(index.intValue());
IValue element = getValue().get(index.intValue());
return makeResult(elementType, element, ctx);
}
