/**
* 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>(SEND)</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)</b> rule to.
*/
public void applySend(BigStepProofContext pContext, BigStepProofNode pNode) {
Send send = (Send) pNode.getExpression();
if (send.getE() instanceof Row) {
throw new IllegalArgumentException("Can not apply SEND"); // $NON-NLS-1$
}
pContext.addProofNode(pNode, send.getE());
}
/**
* Applies the <b>(OBJECT)</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>(OBJECT)</b> rule to.
*/
public void applyObject(BigStepProofContext pContext, BigStepProofNode pNode) {
ObjectExpr objectExpr = (ObjectExpr) pNode.getExpression();
Row row = objectExpr.getRow();
if (row.isValue()) {
throw new IllegalArgumentException("Can not apply OBJECT"); // $NON-NLS-1$
}
pContext.addProofNode(pNode, row);
}
/**
* 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());
}
/**
* Updates the <code>node</code> to which <b>(SEND)</b> was applied previously.
*
* @param pContext The big step proof context.
* @param pNode The node to update according to <b>(SEND)</b>.
*/
public void updateSend(BigStepProofContext pContext, BigStepProofNode pNode) {
if ((pNode.getChildCount() == 1) && (pNode.getChildAt(0).isProven())) {
Send send = (Send) pNode.getExpression();
ObjectExpr objectExpr = (ObjectExpr) pNode.getChildAt(0).getResult().getValue();
Row row = objectExpr.getRow();
Expression newRow;
newRow = row.substitute(objectExpr.getId(), objectExpr);
pContext.addProofNode(pNode, new Send(newRow, send.getId()));
} else if ((pNode.getChildCount() == 2)
&& (pNode.getChildAt(0).isProven())
&& (pNode.getChildAt(1).isProven())) {
pContext.setProofNodeResult(pNode, pNode.getChildAt(1).getResult());
}
}
/**
* Applies the <b>(SEND-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>(SEND-ATTR)</b> rule to.
*/
public void applySendAttr(BigStepProofContext pContext, BigStepProofNode pNode) {
Send send = (Send) pNode.getExpression();
Row row = (Row) send.getE();
if (!row.isValue()) {
throw new IllegalArgumentException("Can not apply SEND-ATTR"); // $NON-NLS-1$
}
Expression[] rowExpressions = row.getExpressions();
Attribute attribute = (Attribute) rowExpressions[0];
Expression[] newRowExpressions = new Expression[row.getExpressions().length - 1];
for (int i = 0; i < newRowExpressions.length; i++) {
newRowExpressions[i] = rowExpressions[i + 1].substitute(attribute.getId(), attribute.getE());
}
pContext.addProofNode(pNode, new Send(new Row(newRowExpressions), send.getId()));
}
/**
* Applies the <b>(SEND-EXEC)</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-EXEC)</b> rule to.
*/
public void applySendExec(BigStepProofContext pContext, BigStepProofNode pNode) {
Send send = (Send) pNode.getExpression();
Row row = (Row) send.getE();
if (!row.isValue()) {
throw new IllegalArgumentException("Can not apply SEND-EXEC"); // $NON-NLS-1$
}
Expression[] rowExpressions = row.getExpressions();
Identifier methodName;
Expression methodExpression;
if (rowExpressions[0] instanceof Method) {
Method method = (Method) rowExpressions[0];
methodExpression = method.getE();
methodName = method.getId();
} else if (rowExpressions[0] instanceof CurriedMethod) {
CurriedMethod curriedMethod = (CurriedMethod) rowExpressions[0];
methodExpression = curriedMethod.getE();
Identifier[] identifiers = curriedMethod.getIdentifiers();
MonoType[] types = curriedMethod.getTypes();
for (int i = identifiers.length - 1; i > 0; i--) {
methodExpression = new Lambda(identifiers[i], types[i], methodExpression);
}
methodName = identifiers[0];
} else {
throw new IllegalArgumentException("Can not apply SEND-EXEC"); // $NON-NLS-1$
}
if (!(send.getId().equals(methodName))) {
throw new IllegalArgumentException("Can not apply SEND-EXEC"); // $NON-NLS-1$
}
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) {
pContext.addProofNode(pNode, methodExpression);
} else {
throw new IllegalArgumentException("Can not apply SEND-EXEC"); // $NON-NLS-1$
}
}