/**
* Applies the <b>(ATTR)</b> rule to the <code>pNode</code> using the <code>pContext</code>.
*
* @param pContext The big step proof pContext.
* @param pNode The node to apply the <b>(ATTR)</b> rule to.
*/
public void applyAttr(BigStepProofContext pContext, BigStepProofNode pNode) {
Row row = (Row) pNode.getExpression();
Expression[] rowExpressions = row.getExpressions();
Attribute attribute = (Attribute) rowExpressions[0];
pContext.addProofNode(pNode, attribute.getE());
pContext.addProofNode(pNode, row.tailRow());
}
/**
* Applies the <b>(SEND-SKIP)</b> rule to the <code>pNode</code> using the <code>pContext</code>.
*
* @param pContext The big step proof pContext.
* @param pNode The node to apply the <b>(SEND-SKIP)</b> rule to.
*/
public void applySendSkip(BigStepProofContext pContext, BigStepProofNode pNode) {
Send send = (Send) pNode.getExpression();
Row row = (Row) send.getE();
if (!row.isValue()) {
throw new IllegalArgumentException("Can not apply SEND-SKIP"); // $NON-NLS-1$
}
Expression[] rowExpressions = row.getExpressions();
Identifier methodName;
if (rowExpressions[0] instanceof Method) {
Method method = (Method) rowExpressions[0];
methodName = method.getId();
} else if (rowExpressions[0] instanceof CurriedMethod) {
CurriedMethod curriedMethod = (CurriedMethod) rowExpressions[0];
methodName = curriedMethod.getIdentifiers()[0];
} else {
throw new IllegalArgumentException("Can not apply SEND-SKIP"); // $NON-NLS-1$
}
boolean definedLater = false;
for (int i = 1; i < row.getExpressions().length; i++) {
Expression rowChild = rowExpressions[i];
if ((rowChild instanceof Method) && (((Method) rowChild).getId().equals(send.getId()))) {
definedLater = true;
break;
} else if ((rowChild instanceof CurriedMethod)
&& (((CurriedMethod) rowChild).getIdentifiers()[0].equals(send.getId()))) {
definedLater = true;
break;
}
}
if ((definedLater) || (!(send.getId().equals(methodName)))) {
pContext.addProofNode(pNode, new Send(row.tailRow(), send.getId()));
} else {
throw new IllegalArgumentException("Can not apply SEND-SKIP"); // $NON-NLS-1$
}
}
/**
* Applies the <b>(METHOD)</b> rule to the <code>pNode</code> using the <code>pContext</code>.
*
* @param pContext The big step proof pContext.
* @param pNode The node to apply the <b>(METHOD)</b> rule to.
*/
public void applyMethod(BigStepProofContext pContext, BigStepProofNode pNode) {
Row row = (Row) pNode.getExpression();
Expression[] rowExpressions = row.getExpressions();
if ((!(rowExpressions[0] instanceof Method))
&& (!(rowExpressions[0] instanceof CurriedMethod))) {
throw new IllegalArgumentException("Can not apply METHOD"); // $NON-NLS-1$
}
pContext.addProofNode(pNode, row.tailRow());
}