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[POC] Colorize backtrace #1

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[POC] Colorize backtrace #1

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31 changes: 29 additions & 2 deletions lib/debug/backtrace_formatter.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,17 @@ module DEBUGGER__
class BacktraceFormatter
attr_reader :frames

COLOR_CODES = {
green: 10,
yellow: 11,
blue: 12,
megenta: 13,
cyan: 14,
orange: 214
}

COLOR_RESET_POSTFIX = "\u001b[0m"

def initialize(frames)
@frames = frames
end
Expand All @@ -19,9 +30,25 @@ def formatted_traces(max)

def formatted_trace(i)
frame = @frames[i]
result = "#{frame.call_identifier_str} at #{frame.location_str}"
result += " #=> #{frame.return_value_str}" if frame.return_value_str
location_str = colorize(frame.location_str, :green)
call_identifier_str = colorize(frame.call_identifier_str, :yellow)

result = "#{call_identifier_str} at #{location_str}"

if frame.return_value_str
return_value_str = colorize(frame.return_value_str, :megenta)
result += " #=> #{return_value_str}"
end

result
end

private

def colorize(content, color)
color_code = COLOR_CODES[color]
color_prefix = "\u001b[38;5;#{color_code}m"
"#{color_prefix}#{content}#{COLOR_RESET_POSTFIX}"
end
end
end