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module REXML
class ParseException < RuntimeError
attr_accessor :source, :parser, :continued_exception
def initialize( message, source=nil, parser=nil, exception=nil )
super(message)
@source = source
@parser = parser
@continued_exception = exception
end
def to_s
# Quote the original exception, if there was one
if @continued_exception
err = @continued_exception.inspect
err << "\n"
err << @continued_exception.backtrace.join("\n")
err << "\n...\n"
else
err = ""
end
# Get the stack trace and error message
err << super
# Add contextual information
if @source
err << "\nLine: #{line}\n"
err << "Position: #{position}\n"
err << "Last 80 unconsumed characters:\n"
err << @source.buffer[0..80].gsub(/\n/, ' ')
end
err
end
def position
@source.current_line[0] if @source and defined? @source.current_line and
@source.current_line
end
def line
@source.current_line[2] if @source and defined? @source.current_line and
@source.current_line
end
def context
@source.current_line
end
end
end
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