module V8 class JSError < StandardError attr_reader :value, :boundaries def initialize(try, to) @to = to begin super(initialize_unsafe(try)) rescue Exception => e @boundaries = Boundary.new(:rbframes => e.backtrace) @value = e super("BUG! please report. JSError#initialize failed!: #{e.message}") end end def initialize_unsafe(try) message = nil ex = @to.rb(try.Exception()) @boundaries = [Boundary.new(:rbframes => caller(3), :jsframes => parse_js_frames(try))] if V8::Object === ex if msg = ex['message'] message = msg else message = ex.to_s end if cause = ex.instance_variable_get(:@native).GetHiddenValue("TheRubyRacer::Cause") if !cause.IsEmpty() prev = cause.Value() if prev.kind_of?(JSError) @boundaries.concat prev.boundaries @value = prev.value else @value = prev @boundaries.concat [Boundary.new(:rbframes => prev.backtrace)] end else @value = ex end end else @value = ex message = ex.to_s @boundaries.first.jsframes << 'at [???].js' end return message end def in_ruby? @value.kind_of?(Exception) end def in_javascript? !in_ruby? end def backtrace(*modifiers) trace_framework = modifiers.include?(:framework) trace_ruby = modifiers.length == 0 || modifiers.include?(:ruby) trace_javascript = modifiers.length == 0 || modifiers.include?(:javascript) mixed = [] rbcontext = [] jscontext = [] @boundaries.each do |b| rbframes = b.rbframes.dup rbcontext.reverse_each do |frame| if frame == rbframes.last rbframes.pop else break end end if trace_ruby jsframes = b.jsframes.dup jscontext.reverse_each do |frame| if frame == jsframes.last jsframes.pop else break end end if trace_javascript rbcontext = b.rbframes jscontext = b.jsframes rbframes.reject! {|f| f =~ /lib\/v8\/.*\.rb/} unless trace_framework mixed.unshift(*rbframes) if trace_ruby mixed.unshift(*jsframes) if trace_javascript end return mixed end def parse_js_frames(try) raw = @to.rb(try.StackTrace()) if raw && !raw.empty? raw.split("\n")[1..-1].tap do |frames| frames.each {|frame| frame.strip!.chomp!(",")} end else [] end end class Boundary attr_reader :rbframes, :jsframes def initialize(frames = {}) @rbframes = frames[:rbframes] || [] @jsframes = frames[:jsframes] || [] end end end #deprecated -- use JSError JavasriptError = JSError end