/**
* Dumps the current NodeToken to the output stream being used.
*
* @throws IllegalStateException if the token position is invalid relative to the current
* position, i.e. its location places it before the previous token.
*/
public void visit(NodeToken n) {
if (n.beginLine == -1 || n.beginColumn == -1) {
printToken(n.tokenImage);
return;
}
//
// Handle special tokens
//
if (printSpecials && n.numSpecials() > 0)
for (Enumeration<NodeToken> e = n.specialTokens.elements(); e.hasMoreElements(); )
visit(e.nextElement());
//
// Handle startAtNextToken option
//
if (startAtNextToken) {
curLine = n.beginLine;
curColumn = 1;
startAtNextToken = false;
if (n.beginColumn < curColumn) out.println();
}
//
// Check for invalid token position relative to current position.
//
if (n.beginLine < curLine)
throw new IllegalStateException(
"at token \""
+ n.tokenImage
+ "\", n.beginLine = "
+ Integer.toString(n.beginLine)
+ ", curLine = "
+ Integer.toString(curLine));
else if (n.beginLine == curLine && n.beginColumn < curColumn)
throw new IllegalStateException(
"at token \""
+ n.tokenImage
+ "\", n.beginColumn = "
+ Integer.toString(n.beginColumn)
+ ", curColumn = "
+ Integer.toString(curColumn));
//
// Move output "cursor" to proper location, then print the token
//
if (curLine < n.beginLine) {
curColumn = 1;
for (; curLine < n.beginLine; ++curLine) out.println();
}
for (; curColumn < n.beginColumn; ++curColumn) out.print(" ");
printToken(n.tokenImage);
}
/**
* Executes the commands waiting in the command queue, then inserts the proper location
* information into the current NodeToken.
*
* <p>If there are any special tokens preceding this token, they will be given the current
* location information. The token will follow on the next line, at the proper indentation level.
* If this is not the behavior you want from special tokens, feel free to modify this method.
*/
public void visit(NodeToken n) {
for (Enumeration<FormatCommand> e = cmdQueue.elements(); e.hasMoreElements(); ) {
FormatCommand cmd = e.nextElement();
switch (cmd.getCommand()) {
case FormatCommand.FORCE:
curLine += cmd.getNumCommands();
curColumn = curIndent + 1;
break;
case FormatCommand.INDENT:
curIndent += indentAmt * cmd.getNumCommands();
break;
case FormatCommand.OUTDENT:
if (curIndent >= indentAmt) curIndent -= indentAmt * cmd.getNumCommands();
break;
case FormatCommand.SPACE:
curColumn += cmd.getNumCommands();
break;
default:
throw new TreeFormatterException("Invalid value in command queue.");
}
}
cmdQueue.removeAllElements();
//
// Handle all special tokens preceding this NodeToken
//
if (n.numSpecials() > 0)
for (Enumeration<NodeToken> e = n.specialTokens.elements(); e.hasMoreElements(); ) {
NodeToken special = e.nextElement();
//
// -Place the token.
// -Move cursor to next line after the special token.
// -Don't update curColumn--want to keep current indent level.
//
placeToken(special, curLine, curColumn);
curLine = special.endLine + 1;
}
placeToken(n, curLine, curColumn);
curLine = n.endLine;
curColumn = n.endColumn;
}
