/**
* Create a jump table for a SELECT node.
*
* @param node the SELECT node.
* @return the jump table.
*/
private HashMap<Object, ICodeNode> createJumpTable(ICodeNode node) {
HashMap<Object, ICodeNode> jumpTable = new HashMap<Object, ICodeNode>();
// Loop over children that are SELECT_BRANCH nodes.
ArrayList<ICodeNode> selectChildren = node.getChildren();
for (int i = 1; i < selectChildren.size(); ++i) {
ICodeNode branchNode = selectChildren.get(i);
ICodeNode constantsNode = branchNode.getChildren().get(0);
ICodeNode statementNode = branchNode.getChildren().get(1);
// Loop over the constants children of the branch's CONSTANTS_NODE.
ArrayList<ICodeNode> constantsList = constantsNode.getChildren();
for (ICodeNode constantNode : constantsList) {
// Create a jump table entry.
// Convert a single-character string constant to a character.
Object value = constantNode.getAttribute(VALUE);
if (constantNode.getType() == STRING_CONSTANT) {
value = ((String) value).charAt(0);
}
jumpTable.put(value, statementNode);
}
}
return jumpTable;
}
