Feature: log.dump

[david942j]

log.dump { libc.hex }
# [DUMP] libc.hex = "0x7f3012acd000"

[ShikChen]

Some hacky POC:

def dump_var(&block)
  msg = Array(block.call).map do |var|
    "#{var} = #{block.binding.local_variable_get(var)}"
  end.join(', ')
  puts msg
end

def dump_val(*val)
  loc = caller_locations[0]
  s = open(loc.absolute_path).each.with_index(1){|l, i| break l if i == loc.lineno}
  puts "#{s[/\A.*\((.*)\)\s*\z/, 1]} = #{val.join(', ')}"
end

x = 1
y = 2
z = 3

dump_var{:x}
dump_var{[:y, :z]}

dump_val(x)
dump_val(y, z, y + z)

[ShikChen]

One more hacky POC with binding_of_caller.

require 'binding_of_caller'

def dump_eval(*exprs)
  b = binding.of_caller(1)
  msg = exprs.map do |expr|
    "#{expr} = #{b.eval(expr)}"
  end.join(', ')
  puts msg
end

x = 1
y = 2
z = 3

dump_eval('x')
dump_eval('y', 'z', 'y + z')

[ShikChen]

The source code parsing used in dump_val could be much better by using ripper. But I don't have time to make a POC now...XD