* eval.c (rb_proc_new): Turn the BLOCK_LAMBDA flag on.

* object.c (sym_to_proc), test/ruby/test_symbol.rb: Add back
  Symbol#to_proc, now that it passes the tests.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@16150 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 30 insertions, 0 deletions

diff --git a/object.c b/object.c
index 28b7e4c84e..1d38798005 100644
--- a/object.c
+++ b/object.c
@@ -1212,6 +1212,35 @@ sym_to_sym(sym)
 }
 
 
+static VALUE
+sym_call(args, mid)
+    VALUE args, mid;
+{
+    VALUE obj;
+
+    if (RARRAY(args)->len < 1) {
+	rb_raise(rb_eArgError, "no receiver given");
+    }
+    obj = rb_ary_shift(args);
+    return rb_apply(obj, (ID)mid, args);
+}
+
+/*
+ * call-seq:
+ *   sym.to_proc
+ *
+ * Returns a _Proc_ object which respond to the given method by _sym_.
+ *
+ *   (1..3).collect(&:to_s)  #=> ["1", "2", "3"]
+ */
+
+static VALUE
+sym_to_proc(VALUE sym)
+{
+    return rb_proc_new(sym_call, (VALUE)SYM2ID(sym));
+}
+
+
 /***********************************************************************
  *
  * Document-class: Module
@@ -2755,6 +2784,7 @@ Init_Object()
     rb_define_method(rb_cSymbol, "to_s", sym_to_s, 0);
     rb_define_method(rb_cSymbol, "id2name", sym_to_s, 0);
     rb_define_method(rb_cSymbol, "to_sym", sym_to_sym, 0);
+    rb_define_method(rb_cSymbol, "to_proc", sym_to_proc, 0);
     rb_define_method(rb_cSymbol, "===", rb_obj_equal, 1); 
 
     rb_define_method(rb_cModule, "freeze", rb_mod_freeze, 0);