Hi there,

I get this error when trying to clone a complex object that has a couple of Hashes with symbols in it. Do you have any ideas how to fix this?
Can I provide any infos that might help?

Cheers

Does not support Procs:

[8] pry(Morrow::Console)> h = { proc: proc{} }
=> {:proc=>#<Proc:0x00007f9549c47698@(pry):8>}
[9] pry(Morrow::Console)> DeepClone.clone(h)
TypeError: allocator undefined for Proc
from (pry):9:in `clone'

However, Proc#clone should work:

[11] pry(Morrow::Console)> p = proc {}
=> #<Proc:0x00007f954d225a58@(pry):11>
[12] pry(Morrow::Console)> p.clone
=> #<Proc:0x00007f954d254ce0@(pry):11>

I am trying to deep clone a Struct element, but DeepClone does not seem to work as expected.

2.3.1 :001 > require "deep_clone"
 => true 
2.3.1 :002 > AStruct = Struct.new(:test)
 => AStruct 
2.3.1 :003 > a = AStruct.new("ciao")
 => #<struct AStruct test="ciao"> 
2.3.1 :004 > b = a.clone
 => #<struct AStruct test="ciao"> 
2.3.1 :005 > c = DeepClone.clone(a)
 => #<struct AStruct test="ciao"> 
2.3.1 :006 > a.test = "hello"
 => "hello" 
2.3.1 :007 > a
 => #<struct AStruct test="hello"> 
2.3.1 :008 > b
 => #<struct AStruct test="ciao"> 
2.3.1 :009 > c
 => #<struct AStruct test="hello">

irb

2.2.0 :001 > require "deep_clone"
=> true
2.2.0 :002 > o1 = Object.new
=> #Object:0x0000000097c2c8
2.2.0 :003 > o2 = DeepClone.clone o1
ArgumentError: wrong number of arguments (1 for 0)
from (irb):3:in clone
from (irb):3
from /usr/local/rvm/rubies/ruby-2.2.0/bin/irb:11:in

with 1.9.3 it works OK. With 2.3.* it doesn't too.

Deep Clone seems to heavily depend on internals that MRI itself does not expose.

I think the best way to support other Ruby implementations such as TruffleRuby and JRuby would be to use a pure-Ruby fallback using Marshal.load Marshal.dump(obj) on any implementation where RUBY_ENGINE != "ruby".
Do you think this could be done in this gem?
Then it would work transparently on other Ruby implementations.

From oracle/truffleruby#2073

Hi! I need to make a depth copy of objects with BigDecimal values.
When a try, I get this error. TypeError (can't copy BigDecimal)

Thanks.

First off, thanks for sharing your code. I'm new to ruby, so if this is something simple please forgive my ignorance. I tried installing your gem today and was met with this error:
gem install -n . ruby_deep_clone
Building native extensions. This could take a while...
ERROR: Error installing ruby_deep_clone:
ERROR: Failed to build gem native extension.

/usr/bin/ruby1.8 extconf.rb
creating Makefile

make
gcc -I. -I/usr/lib/ruby/1.8/x86_64-linux -I/usr/lib/ruby/1.8/x86_64-linux -I. -fPIC -fno-strict-aliasing -g -g -O2 -fPIC -c deep_clone.c
In file included from deep_clone.c:1:
deep_clone.h:5:21: error: ruby/st.h: No such file or directory
deep_clone.h:6:26: error: ruby/version.h: No such file or directory
In file included from deep_clone.c:1:
deep_clone.h:61: error: expected ‘)’ before ‘key’
deep_clone.c:34: error: expected ‘)’ before ‘key’
deep_clone.c: In function ‘hash_each’:
deep_clone.c:47: error: ‘ST_CONTINUE’ undeclared (first use in this function)
deep_clone.c:47: error: (Each undeclared identifier is reported only once
deep_clone.c:47: error: for each function it appears in.)
deep_clone.c: In function ‘clone_object’:
deep_clone.c:80: error: ‘st_data_t’ undeclared (first use in this function)
deep_clone.c:116: error: ‘st_table’ undeclared (first use in this function)
deep_clone.c:116: error: ‘tbl’ undeclared (first use in this function)
deep_clone.c:116: error: ‘ROBJECT_EMBED’ undeclared (first use in this function)
deep_clone.c:116: error: ‘struct RClass’ has no member named ‘iv_index_tbl’
deep_clone.c:116: error: ‘struct RObject’ has no member named ‘as’
deep_clone.c:120: error: ‘clone_variable’ undeclared (first use in this function)
make: *** [deep_clone.o] Error 1

I'm running ruby 1.8.7 (I know, upgrade but work just hasn't given me time yet) on Debian squeeze 6.0.8 x64
Thanks for your time.

For now ruby_deep_clone forces windows users to install RIDK on to be able to install this gem (to compile native extension).

It's totally ok for developers but sometimes RIDK installation create difficulties for those users who don't familiar with programming but wanna use some tool written in ruby

So it will be nice if you will provide prebuilt of native extension for your ruby gem

Thanks

The currently released gem for 0.7.1 on rubygems.org (https://rubygems.org/gems/ruby_deep_clone/) does not include the header file (ext/deep_clone/deep_clone.h) needed to compile the gem. When compiling, you get:

gem install ruby_deep_clone -v '0.7.1'
Building native extensions.  This could take a while...
ERROR:  Error installing ruby_deep_clone:
ERROR: Failed to build gem native extension.

current directory: /Users/name/.rvm/gems/ruby-1.9.3-p551/gems/ruby_deep_clone-0.7.1/ext/deep_clone
/Users/name/.rvm/rubies/ruby-1.9.3-p551/bin/ruby -r ./siteconf20160420-49369-1uvptbx.rb extconf.rb
creating Makefile

current directory: /Users/name/.rvm/gems/ruby-1.9.3-p551/gems/ruby_deep_clone-0.7.1/ext/deep_clone
make  clean

current directory: /Users/name/.rvm/gems/ruby-1.9.3-p551/gems/ruby_deep_clone-0.7.1/ext/deep_clone
make
compiling deep_clone.c
deep_clone.c:1:24: fatal error: deep_clone.h: No such file or directory
#include "deep_clone.h"
                    ^
compilation terminated.
make: *** [deep_clone.o] Error 1

make failed, exit code 2

This was fixed in the commit 1c154c4. Can you please reupload the gem to rubygems?

So the signature of the function deep_clone doesn't match the arity given to rb_define_module_function.
It should be VALUE deep_clone(VALUE self, VALUE arg).

From oracle/truffleruby#2073

It is impossible to install the gem under Ruby 2.1 The error is bellow:

gem install ruby_deep_clone -v '0.3.0' 
Building native extensions.  This could take a while...
ERROR:  Error installing ruby_deep_clone:
    ERROR: Failed to build gem native extension.

    /Users/romikoops/.rvm/rubies/ruby-2.1.0/bin/ruby extconf.rb
/Users/romikoops/.rvm/rubies/ruby-2.1.0/bin/ruby: warning: RUBY_FREE_MIN is obsolete. Use RUBY_GC_HEAP_FREE_SLOTS instead.
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling deep_clone.c
deep_clone.c:106:25: error: no member named 'iv_index_tbl' in 'struct RClass'
        st_table *tbl = ROBJECT_IV_INDEX_TBL(object);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/romikoops/.rvm/rubies/ruby-2.1.0/include/ruby-2.1.0/ruby/ruby.h:784:6: note: expanded from macro 'ROBJECT_IV_INDEX_TBL'
     RCLASS_IV_INDEX_TBL(rb_obj_class(o)) : \
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./deep_clone.h:33:44: note: expanded from macro 'RCLASS_IV_INDEX_TBL'
#define RCLASS_IV_INDEX_TBL(c) (RCLASS(c)->iv_index_tbl)
                                ~~~~~~~~~  ^
1 error generated.
make: *** [deep_clone.o] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/romikoops/.rvm/gems/ruby-2.1.0@calc-service/gems/ruby_deep_clone-0.3.0 for inspection.
Results logged to /Users/romikoops/.rvm/gems/ruby-2.1.0@calc-service/extensions/x86_64-darwin-12/2.1.0-static/ruby_deep_clone-0.3.0/gem_make.out