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module REXML
class ParseException < Exception
attr_accessor :source, :element, :continued_exception
def initialize( message, source=nil, element=nil, exception=nil )
super(message)
@source = source
@element = element
@continued_exception = exception
end
def to_s
# Quote the original exception, if there was one
if @continued_exception
err = @continued_exception.message
err << "\n"
err << @continued_exception.backtrace[0..3].join("\n")
err << "\n...\n"
else
err = ""
end
# Get the stack trace and error message
err << super
# Add contextual information
err << "\nat about line #{@source.current_line}:\n#{@source.buffer[0..80].gsub(/\n/, ' ')}\n" if @source
# Information about the path of the element the error occurred in
if @element
path = @element.expanded_name
path = "TAG MISSING ERROR" unless path
parent = @element.parent
while parent and not parent.type == "Document"
path = parent.expanded_name + "/" + path
parent = parent.parent
end
err << "in element #{path}\n"
end
#err << @continued_exception.message if @continued_exception
err
end
def line
@source.current_line if @source
end
end
end
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