Sha256: 56d240d1be8d50c3ddc96d4567c5ced63c291c14b7c26dffd8e3142654e420b8
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Size: 1.8 KB
Versions: 110
Compression:
Stored size: 1.8 KB
Contents
#!/usr/bin/env ruby
# encoding: utf-8
# frozen_string_literal: true
require 'bundler/setup'
require 'polyphony'
Gyro.trace(true)
FILE_CACHE = {}
@ready = nil
@last_location = nil
@mode = :step
@current_fiber = nil
@stacks = Hash.new([])
def debug_prompt
loop do
STDOUT << '(debug) '
case (cmd = STDIN.gets.chomp)
when '.q', '.quit'
exit!
when 's', 'step'
@mode = :step
return
else
begin
result = binding.eval(cmd)
p result
rescue Exception => e
p e
puts e.backtrace.join("\n")
end
end
end
end
def get_snippet(path, lineno)
lines = FILE_CACHE[path] ||= IO.read(path).lines
start_idx = lineno - 5
stop_idx = lineno + 3
stop_idx = lines.size - 1 if stop_idx >= lines.size
start_idx = 0 if start_idx < 0
(start_idx..stop_idx).map { |idx| [idx + 1, lines[idx]]}
end
def print_snippet(snippet, cur_line)
snippet.each do |(lineno, line)|
is_cur = lineno == cur_line
formatted = format("%s%03d %s", is_cur ? '*=> ' : ' ', lineno, line)
puts formatted
end
end
tp = Polyphony::Trace.new(*Polyphony::Trace::STOCK_EVENTS, :fiber_all) do |r|
unless @ready
@ready = true if r[:event] == :return
@current_fiber = r[:fiber]
next
end
case r[:event]
when :call, :b_call, :c_call
@stacks[r[:fiber]] << r
when :return, :b_return, :c_return
@stacks[r[:fiber]].pop
when :line
case @mode
when :step
if r[:location] != @last_location && r[:fiber] == @current_fiber
@last_location = r[:location]
puts "in #{r[:location]}"
puts
snippet = get_snippet(r[:path], r[:lineno])
print_snippet(snippet, r[:lineno])
puts
debug_prompt
end
end
end
rescue Exception => e
p e
exit!
end
tp.enable
require File.expand_path(ARGV[0])
Version data entries
110 entries across 110 versions & 1 rubygems