Bug 109041 [implementation] Occurrence finders should not compute current node each time
I20050906-1200 This is a minor performance improvement item: currently each occurrence finder computes the node at the caret location via NodeFinder. It would be more efficient to compute the node once and initialize each occurrence finder with that node.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/search/OccurrencesFinder.java
if (name instanceof QualifiedName)
				name= ((QualifiedName)name).getName();
			match(name, fUsages, node.resolveConstructorBinding());
		}
		return super.visit(node);
	}
	
	public boolean visit(Assignment node) {
		Expression lhs= node.getLeftHandSide();
		SimpleName name= getSimpleName(lhs);
		if (name != null) 
			match(name, fWriteUsages, name.resolveBinding());	
		lhs.accept(this);
		node.getRightHandSide().accept(this);
		return false;
	}
	
	public boolean visit(SingleVariableDeclaration node) {
		match(node.getName(), fWriteUsages, node.resolveBinding());
		return super.visit(node);
	}
	
	public boolean visit(VariableDeclarationFragment node) {
		if (node.getParent().getNodeType() == ASTNode.FIELD_DECLARATION || node.getInitializer() != null)
			match(node.getName(), fWriteUsages, node.resolveBinding());
		return super.visit(node);
	}
	public boolean visit(PrefixExpression node) {
		PrefixExpression.Operator operator= node.getOperator();	
		if (operator == Operator.INCREMENT || operator == Operator.DECREMENT) {