Avoid reporting ranges in the wrong files.

[vinivendra]

Currently, source file ranges only include information on the lines and columns of a file, but not on the file path. The code assumes the range is relative to the current file being translated, which is almost always the case, but can cause issues when an expression comes from another file (for instance the templates library).

If the file path was included in the range, this could be fixed, but it might cause performance issues.