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# frozen_string_literal: true
module WebConsole
class ExceptionMapper
attr_reader :exc
def self.follow(exc)
mappers = [new(exc)]
while cause = (cause || exc).cause
mappers << new(cause)
end
mappers
end
def self.find_binding(mappers, exception_object_id)
mappers.detect do |exception_mapper|
exception_mapper.exc.object_id == exception_object_id.to_i
end || mappers.first
end
def initialize(exception)
@backtrace = exception.backtrace
@bindings = exception.bindings
@exc = exception
end
def first
guess_the_first_application_binding || @bindings.first
end
def [](index)
guess_binding_for_index(index) || @bindings[index]
end
private
def guess_binding_for_index(index)
file, line = @backtrace[index].to_s.split(":")
line = line.to_i
@bindings.find do |binding|
source_location = SourceLocation.new(binding)
source_location.path == file && source_location.lineno == line
end
end
def guess_the_first_application_binding
@bindings.find do |binding|
source_location = SourceLocation.new(binding)
source_location.path.to_s.start_with?(Rails.root.to_s)
end
end
end
end
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