Merge branch 'take-cheeze-reduce_new_obj'

mrbgems/mruby-symbol-ext/mrblib/symbol.rb

@@ -7,17 +7,6 @@ class Symbol
     end
   end
 
-  ##
-  # call-seq:
-  #   sym.length    -> integer
-  #
-  # Same as <code>sym.to_s.length</code>.
-
-  def length
-    self.to_s.length
-  end
-  alias :size :length
-
   ##
   # call-seq:
   #   sym.capitalize  -> symbol
@@ -25,7 +14,7 @@ class Symbol
   # Same as <code>sym.to_s.capitalize.intern</code>.
 
   def capitalize
-    self.to_s.capitalize.intern
+    (self.to_s.capitalize! || self).to_sym
   end
 
   ##
@@ -35,7 +24,7 @@ class Symbol
   # Same as <code>sym.to_s.downcase.intern</code>.
 
   def downcase
-    self.to_s.downcase.intern
+    (self.to_s.downcase! || self).to_sym
   end
 
   ##
@@ -45,7 +34,7 @@ class Symbol
   # Same as <code>sym.to_s.upcase.intern</code>.
 
   def upcase
-    self.to_s.upcase.intern
+    (self.to_s.upcase! || self).to_sym
   end
 
   ##
@@ -56,7 +45,9 @@ class Symbol
 
   def casecmp(other)
     return nil unless other.kind_of?(Symbol)
-    self.to_s.upcase <=> other.to_s.upcase
+    lhs =  self.to_s; lhs.upcase!
+    rhs = other.to_s; rhs.upcase!
+    lhs <=> rhs
   end
 
   #
@@ -66,7 +57,7 @@ class Symbol
   # Returns that _sym_ is :"" or not.
 
   def empty?
-    self.to_s.empty?
+    self.length == 0
   end
 
 end

mrbgems/mruby-symbol-ext/src/symbol.c

@@ -42,11 +42,27 @@ mrb_sym_all_symbols(mrb_state *mrb, mrb_value self)
   return ary;
 }
 
+/*
+ * call-seq:
+ *   sym.length    -> integer
+ *
+ * Same as <code>sym.to_s.length</code>.
+ */
+static mrb_value
+mrb_sym_length(mrb_state *mrb, mrb_value self)
+{
+  mrb_int len;
+  mrb_sym2name_len(mrb, mrb_symbol(self), &len);
+  return mrb_fixnum_value(len);
+}
+
 void
 mrb_mruby_symbol_ext_gem_init(mrb_state* mrb)
 {
   struct RClass *s = mrb->symbol_class;
   mrb_define_class_method(mrb, s, "all_symbols", mrb_sym_all_symbols, MRB_ARGS_NONE());
+  mrb_define_method(mrb, s, "length", mrb_sym_length, MRB_ARGS_NONE());
+  mrb_define_method(mrb, s, "size", mrb_sym_length, MRB_ARGS_NONE());
 }
 
 void

mrbgems/mruby-symbol-ext/test/symbol.rb

@@ -19,14 +19,17 @@ end
 assert("Symbol#capitalize") do
   assert_equal :Hello, :hello.capitalize
   assert_equal :Hello, :HELLO.capitalize
+  assert_equal :Hello, :Hello.capitalize
 end
 
 assert("Symbol#downcase") do
   assert_equal :hello, :hEllO.downcase
+  assert_equal :hello, :hello.downcase
 end
 
 assert("Symbol#upcase") do
   assert_equal :HELLO, :hEllO.upcase
+  assert_equal :HELLO, :HELLO.upcase
 end
 
 assert("Symbol#casecmp") do