/**
* Applies the <b>(TRANS)</b> rule to the <code>node</code> using the <code>context</code>.
*
* @param context the minimal typing proof context.
* @param pNode the minimal typing proof node.
*/
public void applyTrans(MinimalTypingProofContext context, MinimalTypingProofNode pNode) {
MinimalTypingTypesProofNode node = (MinimalTypingTypesProofNode) pNode;
try {
ObjectType type = (ObjectType) node.getType2();
ObjectType type2 = (ObjectType) node.getType();
ArrayList<Identifier> newIds = new ArrayList<Identifier>();
ArrayList<MonoType> newTypes = new ArrayList<MonoType>();
RowType r1 = (RowType) (type).getPhi();
RowType r2 = (RowType) (type2).getPhi();
Identifier[] ids1 = r1.getIdentifiers();
Identifier[] ids2 = r2.getIdentifiers();
MonoType[] types2 = r2.getTypes();
boolean goOn;
for (int i = 0; i < ids1.length; i++) {
goOn = false;
for (int j = 0; j < ids2.length; j++) {
if (ids1[i].equals(ids2[j])) {
newIds.add(ids2[j]);
newTypes.add(types2[j]);
goOn = true;
break;
}
}
if (goOn) continue;
throw new RuntimeException(Messages.getString("SubTypingException.5")); // $NON-NLS-1$
}
Identifier[] tmpIds = new Identifier[newIds.size()];
for (int i = 0; i < newIds.size(); i++) {
tmpIds[i] = newIds.get(i);
}
MonoType[] tmpTypes = new MonoType[newTypes.size()];
for (int i = 0; i < newTypes.size(); i++) {
tmpTypes[i] = newTypes.get(i);
}
// ObjectType newType = new ObjectType ( new RowType ( (Identifier[])
// newIds.toArray ( ),(MonoType[]) newTypes.toArray ( ) ) );
ObjectType newType = new ObjectType(new RowType(tmpIds, tmpTypes));
// generate new child node
context.addProofNode(node, type2, newType);
// generate new child node
context.addProofNode(node, newType, type);
} catch (ClassCastException e) {
MonoType type = node.getType();
MonoType type2 = node.getType2();
// if both types instance of Primitive Type throw Exception
if (type instanceof PrimitiveType && type2 instanceof PrimitiveType) {
throw new IllegalArgumentException(
Messages.getString("SubTypingException.1")); // $NON-NLS-1$
}
// generate new child node
context.addProofNode(node, type, type);
// generate new child node
context.addProofNode(node, type, type2);
SubTypingProofNode parent = (SubTypingProofNode) node.getParent();
int count = 0;
// check how often the trans rule was applied
while (parent != null) {
if (parent.getRule().toString().equals("TRANS")) { // $NON-NLS-1$
count++;
} else break;
parent = (SubTypingProofNode) parent.getParent();
}
// if applied 15 times the trans rule throw Exception
if (count >= 15)
throw new RuntimeException(Messages.getString("SubTypingException.2")); // $NON-NLS-1$
}
}
