78 lines
2.0 KiB
Ruby
78 lines
2.0 KiB
Ruby
class Pry
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class Command::Cat
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class ExceptionFormatter < AbstractFormatter
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attr_reader :ex
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attr_reader :opts
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attr_reader :_pry_
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def initialize(exception, _pry_, opts)
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@ex = exception
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@opts = opts
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@_pry_ = _pry_
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end
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def format
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check_for_errors
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set_file_and_dir_locals(backtrace_file, _pry_, _pry_.current_context)
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code = decorate(Pry::Code.from_file(backtrace_file).
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between(*start_and_end_line_for_code_window).
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with_marker(backtrace_line)).to_s
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"#{header}#{code}"
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end
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private
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def code_window_size
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_pry_.config.default_window_size || 5
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end
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def backtrace_level
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return @backtrace_level if @backtrace_level
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bl = if opts[:ex].nil?
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ex.bt_index
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else
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ex.bt_index = absolute_index_number(opts[:ex], ex.backtrace.size)
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end
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increment_backtrace_level
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@backtrace_level = bl
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end
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def increment_backtrace_level
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ex.inc_bt_index
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end
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def backtrace_file
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Array(ex.bt_source_location_for(backtrace_level)).first
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end
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def backtrace_line
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Array(ex.bt_source_location_for(backtrace_level)).last
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end
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def check_for_errors
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raise CommandError, "No exception found." unless ex
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raise CommandError, "The given backtrace level is out of bounds." unless backtrace_file
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end
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def start_and_end_line_for_code_window
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start_line = backtrace_line - code_window_size
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start_line = 1 if start_line < 1
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[start_line, backtrace_line + code_window_size]
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end
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def header
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unindent %{
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#{Helpers::Text.bold 'Exception:'} #{ex.class}: #{ex.message}
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--
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#{Helpers::Text.bold('From:')} #{backtrace_file} @ line #{backtrace_line} @ #{Helpers::Text.bold("level: #{backtrace_level}")} of backtrace (of #{ex.backtrace.size - 1}).
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}
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end
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end
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end
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end
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