protected String getName() {
Source parent = getParent();
while (parent != null) {
String name = parent.getName();
if (name != null) return name;
parent = parent.getParent();
}
return null;
}
/**
* Returns the File currently being lexed.
*
* <p>If this Source is not a {@link FileLexerSource}, then it will ask the parent Source, and so
* forth recursively. If no Source on the stack is a FileLexerSource, returns null.
*/
protected String getPath() {
Source parent = getParent();
while (parent != null) {
String path = parent.getPath();
if (path != null) return path;
parent = parent.getParent();
}
return null;
}
/**
* Returns true if this Source is expanding the given macro.
*
* <p>This is used to prevent macro recursion.
*/
/* pp */ boolean isExpanding(Macro m) {
Source parent = getParent();
if (parent != null) return parent.isExpanding(m);
return false;
}
/** Returns the current column number within this Source. */
public int getColumn() {
Source parent = getParent();
if (parent == null) return 0;
return parent.getColumn();
}