JezK
Edit File: tracevar.rb
# frozen_string_literal: true require_relative "../command" module Byebug # # Show (and possibily stop) at every line that changes a global variable. # class TracevarCommand < Command def self.regexp /^\s* tr(?:acevar)? (?: \s+ (\S+))? # (variable-name)? (?: \s+ (stop|nostop))? \s*$/x end def self.description <<-DESCRIPTION tr[acevar] <variable> [[no]stop] #{short_description} If "stop" is specified, execution will stop every time the variable changes its value. If nothing or "nostop" is specified, execution won't stop, changes will just be logged in byebug's output. DESCRIPTION end def self.short_description "Enables tracing of a global variable" end def execute var = @match[1] return errmsg(pr("trace.errors.needs_global_variable")) unless var return errmsg(pr("trace.errors.var_is_not_global", name: var)) unless global_variables.include?(:"#{var}") stop = @match[2] && @match[2] !~ /nostop/ instance_eval do trace_var(:"#{var}") { |val| on_change(var, val, stop) } end puts pr("trace.messages.success", var: var) end private def on_change(name, value, stop) puts pr("trace.messages.on_change", name: name, value: value) context.step_out(1, false) if stop end end end