/**
* Constructor.
*
* @param target The target of this PhiStmt.
* @param block The basic Block in which this PhiJoinStmt resides.
*/
public PhiJoinStmt(final VarExpr target, final Block block) {
super(target);
this.block = block;
this.operands = new HashMap();
final Iterator preds = block.graph().preds(block).iterator();
while (preds.hasNext()) {
final Block pred = (Block) preds.next();
final VarExpr operand = (VarExpr) target.clone();
operands.put(pred, operand);
operand.setParent(this);
operand.setDef(null);
}
}
/** Returns the number of operands that this PhiJoinStmt has. */
public int numOperands() {
return block.graph().preds(block).size();
}
/**
* Returns the predacessor nodes (in the CFG not dominator graph) of the block in which this
* PhiJoinStmt occurs.
*/
public Collection preds() {
return block.graph().preds(block);
}