public static FilePosition between(FilePosition a, FilePosition b) {
return instance(
a.source(),
a.endLineNo(),
a.endCharInFile(),
a.endCharInLine(),
b.startLineNo(),
b.startCharInFile(),
b.startCharInLine());
}
public static FilePosition span(FilePosition start, FilePosition end) {
if (start == end) {
return start;
}
if (!start.source.equals(end.source)) {
return FilePosition.UNKNOWN;
}
if (start.startCharInFile > end.endCharInFile) {
throw new IllegalArgumentException(start + ", " + end);
}
return instance(
start.source,
start.startLineNo,
start.startCharInFile,
start.startCharInLine,
end.endLineNo(),
end.endCharInFile(),
end.endCharInLine());
}