add mruby-eval mrbgem (no activation though)

build_config.rb

@@ -38,9 +38,12 @@ MRuby::Build.new do |conf|
   # Use extensional Hash class
   conf.gem "#{root}/mrbgems/mruby-hash-ext"
 
+  # No use eval method
+  # conf.gem "#{root}/mrbgems/mruby-eval
+
   # Generate binaries
   # conf.bins = %w(mrbc mruby mirb)
-  
+
   # C compiler settings
   # conf.cc do |cc|
   #   cc.command = ENV['CC'] || 'gcc'

mrbgems/mruby-eval/mrbgem.rake

@@ -0,0 +1,4 @@
+MRuby::Gem::Specification.new('mruby-eval') do |spec|
+  spec.license = 'MIT'
+  spec.authors = 'mruby developers'
+end

mrbgems/mruby-eval/src/eval.c

@@ -0,0 +1,23 @@
+#include "mruby.h"
+#include "mruby/compile.h"
+
+static mrb_value
+f_eval(mrb_state *mrb, mrb_value self)
+{
+  char *s;
+  int len;
+
+  mrb_get_args(mrb, "s", &s, &len);
+  return mrb_load_nstring(mrb, s, len);
+}
+
+void
+mrb_mruby_eval_gem_init(mrb_state* mrb)
+{
+  mrb_define_class_method(mrb, mrb->kernel_module, "eval", f_eval, ARGS_REQ(1));
+}
+
+void
+mrb_mruby_eval_gem_final(mrb_state* mrb)
+{
+}