/**
* Set the type of the given node to be the least upper bound type of the types of the node's
* children.
*
* @param node The specified node.
* @exception IllegalActionException If an inference error occurs.
*/
public void visitSumNode(ASTPtSumNode node) throws IllegalActionException {
Type[] childTypes = _inferAllChildren(node);
List lexicalTokenList = node.getLexicalTokenList();
int numChildren = node.jjtGetNumChildren();
Type resultType = childTypes[0];
for (int i = 1; i < numChildren; i++) {
Token operator = (Token) lexicalTokenList.get(i - 1);
Type nextType = childTypes[i];
if (operator.kind == PtParserConstants.PLUS) {
resultType = resultType.add(nextType);
} else if (operator.kind == PtParserConstants.MINUS) {
resultType = resultType.subtract(nextType);
} else {
_assert(false, node, "Invalid operation");
}
}
_setType(node, resultType);
}
/**
* Apply a sum operator to the children of the specified node.
*
* @param node The specified node.
* @exception IllegalActionException If an evaluation error occurs.
*/
public void visitSumNode(ASTPtSumNode node) throws IllegalActionException {
if (node.isConstant() && node.isEvaluated()) {
_evaluatedChildToken = node.getToken();
return;
}
ptolemy.data.Token[] tokens = _evaluateAllChildren(node);
List lexicalTokenList = node.getLexicalTokenList();
int numChildren = node.jjtGetNumChildren();
_assert(numChildren > 0, node, "The number of child nodes must be greater than zero");
_assert(
numChildren == (lexicalTokenList.size() + 1),
node,
"The number of child nodes is " + "not equal to number of operators plus one");
ptolemy.data.Token result = tokens[0];
for (int i = 1; i < numChildren; i++) {
Token operator = (Token) lexicalTokenList.get(i - 1);
ptolemy.data.Token nextToken = tokens[i];
if (operator.kind == PtParserConstants.PLUS) {
result = result.add(nextToken);
} else if (operator.kind == PtParserConstants.MINUS) {
result = result.subtract(nextToken);
} else {
_assert(false, node, "Invalid operation");
}
}
_evaluatedChildToken = (result);
if (node.isConstant()) {
node.setToken(_evaluatedChildToken);
}
}
