Trigger const_missing mechanism for Rails

In order to allow Rails' dynamic class loading to work, the
const_missing callback must be called.

6 files changed, 17 insertions, 9 deletions

diff --git a/CHANGES b/CHANGES
index 1db68cc..7f6a557 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,5 @@
+2010-04-07 (1.2.4)
+  * Triger const_missing callback to make Rails' dynamic class loading work.
 2010-03-11 (1.2.3)
   * Added a State#[] method which returns an attribute's value in order to
     increase duck type compatibility to Hash.
diff --git a/VERSION b/VERSION
index 0495c4a..e8ea05d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.2.3
+1.2.4
diff --git a/ext/json/ext/parser/parser.c b/ext/json/ext/parser/parser.c
index 96530fb..ceb7919 100644
--- a/ext/json/ext/parser/parser.c
+++ b/ext/json/ext/parser/parser.c
@@ -26,7 +26,7 @@ static VALUE CNaN, CInfinity, CMinusInfinity;
 
 static ID i_json_creatable_p, i_json_create, i_create_id, i_create_additions,
           i_chr, i_max_nesting, i_allow_nan, i_symbolize_names, i_object_class,
-          i_array_class, i_key_p;
+          i_array_class, i_key_p, i_deep_const_get;
 
 #define MinusInfinity "-Infinity"
 
@@ -415,7 +415,7 @@ case 26:
         if (RTEST(json->create_id)) {
             VALUE klassname = rb_hash_aref(*result, json->create_id);
             if (!NIL_P(klassname)) {
-                VALUE klass = rb_path2class(StringValueCStr(klassname));
+                VALUE klass = rb_funcall(mJSON, i_deep_const_get, 1, klassname);
                 if RTEST(rb_funcall(klass, i_json_creatable_p, 0)) {
                     *result = rb_funcall(klass, i_json_create, 1, *result);
                 }
@@ -1875,6 +1875,7 @@ void Init_parser()
     i_object_class = rb_intern("object_class");
     i_array_class = rb_intern("array_class");
     i_key_p = rb_intern("key?");
+    i_deep_const_get = rb_intern("deep_const_get");
 #ifdef HAVE_RUBY_ENCODING_H
     mEncoding_UTF_8 = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-8"));
     mEncoding_UTF_16BE = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-16be"));
diff --git a/ext/json/ext/parser/parser.rl b/ext/json/ext/parser/parser.rl
index f247b07..c4887dd 100644
--- a/ext/json/ext/parser/parser.rl
+++ b/ext/json/ext/parser/parser.rl
@@ -24,7 +24,7 @@ static VALUE CNaN, CInfinity, CMinusInfinity;
 
 static ID i_json_creatable_p, i_json_create, i_create_id, i_create_additions,
           i_chr, i_max_nesting, i_allow_nan, i_symbolize_names, i_object_class,
-          i_array_class, i_key_p;
+          i_array_class, i_key_p, i_deep_const_get;
 
 #define MinusInfinity "-Infinity"
 
@@ -136,7 +136,7 @@ static char *JSON_parse_object(JSON_Parser *json, char *p, char *pe, VALUE *resu
         if (RTEST(json->create_id)) {
             VALUE klassname = rb_hash_aref(*result, json->create_id);
             if (!NIL_P(klassname)) {
-                VALUE klass = rb_path2class(StringValueCStr(klassname));
+                VALUE klass = rb_funcall(mJSON, i_deep_const_get, 1, klassname);
                 if RTEST(rb_funcall(klass, i_json_creatable_p, 0)) {
                     *result = rb_funcall(klass, i_json_create, 1, *result);
                 }
@@ -732,6 +732,7 @@ void Init_parser()
     i_object_class = rb_intern("object_class");
     i_array_class = rb_intern("array_class");
     i_key_p = rb_intern("key?");
+    i_deep_const_get = rb_intern("deep_const_get");
 #ifdef HAVE_RUBY_ENCODING_H
     mEncoding_UTF_8 = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-8"));
     mEncoding_UTF_16BE = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-16be"));
diff --git a/lib/json/common.rb b/lib/json/common.rb
index 2f1584e..3ce25c1 100644
--- a/lib/json/common.rb
+++ b/lib/json/common.rb
@@ -33,12 +33,16 @@ module JSON
     # level (absolute namespace path?). If there doesn't exist a constant at
     # the given path, an ArgumentError is raised.
     def deep_const_get(path) # :nodoc:
-      path = path.to_s
-      path.split(/::/).inject(Object) do |p, c|
+      path.to_s.split(/::/).inject(Object) do |p, c|
         case
         when c.empty?             then p
         when p.const_defined?(c)  then p.const_get(c)
-        else                      raise ArgumentError, "can't find const #{path}"
+        else
+          if (c = p.const_missing(c) rescue nil) 
+            c
+          else
+            raise ArgumentError, "can't find const #{path}"
+          end
         end
       end
     end
diff --git a/lib/json/version.rb b/lib/json/version.rb
index 571612e..a306929 100644
--- a/lib/json/version.rb
+++ b/lib/json/version.rb
@@ -1,6 +1,6 @@
 module JSON
   # JSON version
-  VERSION         = '1.2.3'
+  VERSION         = '1.2.4'
   VERSION_ARRAY   = VERSION.split(/\./).map { |x| x.to_i } # :nodoc:
   VERSION_MAJOR   = VERSION_ARRAY[0] # :nodoc:
   VERSION_MINOR   = VERSION_ARRAY[1] # :nodoc: