/**
* Adds a mapping for the given node. Mappings must be added in order.
*
* @param startPosition The position on the starting line
* @param endPosition The position on the ending line.
*/
@Override
public void addMapping(
String sourceName,
@Nullable String symbolName,
FilePosition sourceStartPosition,
FilePosition startPosition,
FilePosition endPosition) {
// Don't bother if there is not sufficient information to be useful.
if (sourceName == null || sourceStartPosition.getLine() < 0) {
return;
}
FilePosition adjustedStart = startPosition;
FilePosition adjustedEnd = endPosition;
if (offsetPosition.getLine() != 0 || offsetPosition.getColumn() != 0) {
// If the mapping is found on the first line, we need to offset
// its character position by the number of characters found on
// the *last* line of the source file to which the code is
// being generated.
int offsetLine = offsetPosition.getLine();
int startOffsetPosition = offsetPosition.getColumn();
int endOffsetPosition = offsetPosition.getColumn();
if (startPosition.getLine() > 0) {
startOffsetPosition = 0;
}
if (endPosition.getLine() > 0) {
endOffsetPosition = 0;
}
adjustedStart =
new FilePosition(
startPosition.getLine() + offsetLine,
startPosition.getColumn() + startOffsetPosition);
adjustedEnd =
new FilePosition(
endPosition.getLine() + offsetLine, endPosition.getColumn() + endOffsetPosition);
}
// Create the new mapping.
Mapping mapping = new Mapping();
mapping.sourceFile = sourceName;
mapping.originalPosition = sourceStartPosition;
mapping.originalName = symbolName;
mapping.startPosition = adjustedStart;
mapping.endPosition = adjustedEnd;
// Validate the mappings are in a proper order.
if (lastMapping != null) {
int lastLine = lastMapping.startPosition.getLine();
int lastColumn = lastMapping.startPosition.getColumn();
int nextLine = mapping.startPosition.getLine();
int nextColumn = mapping.startPosition.getColumn();
Preconditions.checkState(
nextLine > lastLine || (nextLine == lastLine && nextColumn >= lastColumn),
"Incorrect source mappings order, previous : (%s,%s)\n" + "new : (%s,%s)",
lastLine,
lastColumn,
nextLine,
nextColumn);
}
lastMapping = mapping;
mappings.add(mapping);
}
