protected void handleTagEnd(
List<BBCodeItem> bbCodeItems, Stack<String> tags, BBCodeToken bbCodeToken) {
int size = 0;
if (bbCodeToken != null) {
String endTag = bbCodeToken.getEndTag();
for (size = tags.size() - 1; size >= 0; size--) {
if (endTag.equals(tags.elementAt(size))) {
break;
}
}
}
if (size >= 0) {
for (int i = tags.size() - 1; i >= size; i--) {
BBCodeItem bbCodeItem = new BBCodeItem(TYPE_TAG_END, null, tags.elementAt(i));
bbCodeItems.add(bbCodeItem);
}
tags.setSize(size);
}
}
/**
* Rewind the current state of the tree walk to the state it was in when mark() was called and it
* returned marker. Also, wipe out the lookahead which will force reloading a few nodes but it is
* better than making a copy of the lookahead buffer upon mark().
*/
public void rewind(int marker) {
if (markers == null) {
return;
}
TreeWalkState state = (TreeWalkState) markers.get(marker);
absoluteNodeIndex = state.absoluteNodeIndex;
currentChildIndex = state.currentChildIndex;
currentNode = state.currentNode;
previousNode = state.previousNode;
// drop node and index stacks back to old size
nodeStack.setSize(state.nodeStackSize);
indexStack.setSize(state.indexStackSize);
head = tail = 0; // wack lookahead buffer and then refill
for (; tail < state.lookahead.length; tail++) {
lookahead[tail] = state.lookahead[tail];
}
release(marker);
}
private void performOperation(String operatorToken) {
if (stack.size() >= 2) {
if (operatorToken.equals("+")) {
add();
} else if (operatorToken.equals("-")) {
subtract();
} else if (operatorToken.equals("*")) {
multiply();
} else if (operatorToken.equals("/")) {
divide();
}
} else {
stack.setSize(0);
stack.push(String.format("Not enough operands to perform operation [%s]", operatorToken));
}
}
public String pushPop(String startValue, String rpnString) {
String returnValue = startValue.toString();
stack.setSize(0);
if (rpnString.contains("x")) {
rpnString = rpnString.replace("x", startValue);
} else {
rpnString = String.format("%s,%s", startValue, rpnString);
}
if (rpnStringContainsValidElements(rpnString)) {
for (String token : rpnString.split(",")) {
if (token != "") {
pushToken(token);
}
}
if (stack.size() == 1) {
returnValue = stack.pop();
try {
Double resultValue = Double.parseDouble(returnValue);
String format = "%f";
if (decimals != null) {
format = String.format(Locale.ENGLISH, "%s.%dg", "%", decimals);
}
returnValue = String.format(format, resultValue);
if (returnValue.contains(".")) {
returnValue = returnValue.replaceFirst("0+$", "");
returnValue = returnValue.replaceFirst("\\.$", "");
}
} catch (NumberFormatException e) {
}
} else {
returnValue = "Error, stack left with multiple values.";
}
} else {
returnValue = String.format("Invalid rpn expression [%s]", rpnString);
}
return returnValue;
}
public void reset() {
openElements.setSize(0);
valueHandlers.setSize(0);
activePatterns.setSize(0);
locator = null;
}