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ruby-changes:10134

From: nobu <ko1@a...>
Date: Tue, 20 Jan 2009 06:48:10 +0900 (JST)
Subject: [ruby-changes:10134] Ruby:r21678 (trunk): * array.c (take_items), enum.c (enum_zip): tries to convert to

nobu	2009-01-20 06:47:48 +0900 (Tue, 20 Jan 2009)

  New Revision: 21678

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=21678

  Log:
    * array.c (take_items), enum.c (enum_zip): tries to convert to
      array first.  [ruby-core:21442]

  Modified files:
    trunk/ChangeLog
    trunk/array.c
    trunk/enum.c
    trunk/test/ruby/test_array.rb
    trunk/test/ruby/test_enum.rb

Index: array.c
===================================================================
--- array.c	(revision 21677)
+++ array.c	(revision 21678)
@@ -2209,9 +2209,11 @@
 static VALUE
 take_items(VALUE obj, long n)
 {
-    VALUE result = rb_ary_new2(n);
+    VALUE result = to_ary(obj);
     VALUE args[2];
 
+    if (!NIL_P(result)) return rb_ary_subseq(result, 0, n);
+    result = rb_ary_new2(n);
     args[0] = result; args[1] = (VALUE)n;
     rb_block_call(obj, rb_intern("each"), 0, 0, take_i, (VALUE)args);
     return result;
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 21677)
+++ ChangeLog	(revision 21678)
@@ -1,3 +1,8 @@
+Tue Jan 20 06:48:56 2009  Nobuyoshi Nakada  <nobu@r...>
+
+	* array.c (take_items), enum.c (enum_zip): tries to convert to
+	  array first.  [ruby-core:21442]
+
 Tue Jan 20 03:50:37 2009  NARUSE, Yui  <naruse@r...>
 
 	* ext/nkf/nkf-utf8/nkf.c: Update nkf to 2.0.9.
Index: enum.c
===================================================================
--- enum.c	(revision 21677)
+++ enum.c	(revision 21678)
@@ -1558,13 +1558,17 @@
     ID conv;
     NODE *memo;
     VALUE result = Qnil;
+    VALUE args = rb_ary_new4(argc, argv);
     int allary = Qtrue;
 
+    argv = RARRAY_PTR(args);
     for (i=0; i<argc; i++) {
-	if (TYPE(argv[i]) != T_ARRAY) {
+	VALUE ary = rb_check_array_type(argv[i]);
+	if (NIL_P(ary)) {
 	    allary = Qfalse;
 	    break;
 	}
+	argv[i] = ary;
     }
     if (!allary) {
 	CONST_ID(conv, "to_enum");
@@ -1576,7 +1580,7 @@
 	result = rb_ary_new();
     }
     /* use NODE_DOT2 as memo(v, v, -) */
-    memo = rb_node_newnode(NODE_DOT2, result, rb_ary_new4(argc, argv), 0);
+    memo = rb_node_newnode(NODE_DOT2, result, args, 0);
     rb_block_call(obj, id_each, 0, 0, allary ? zip_ary : zip_i, (VALUE)memo);
 
     return result;
Index: test/ruby/test_array.rb
===================================================================
--- test/ruby/test_array.rb	(revision 21677)
+++ test/ruby/test_array.rb	(revision 21678)
@@ -1502,6 +1502,11 @@
     a = []
     [1, 2, 3].zip([:a, :b], ["a", "b", "c", "d"]) {|x| a << x }
     assert_equal([[1, :a, "a"], [2, :b, "b"], [3, nil, "c"]], a)
+
+    ary = Object.new
+    def ary.to_a;   [1, 2]; end
+    def ary.to_ary; [3, 4]; end
+    assert_equal([[5, 3], [6, 4]], [5, 6].zip(ary))
   end
 
   def test_transpose
Index: test/ruby/test_enum.rb
===================================================================
--- test/ruby/test_enum.rb	(revision 21677)
+++ test/ruby/test_enum.rb	(revision 21678)
@@ -211,6 +211,11 @@
     a = []
     @obj.zip([:a, :b, :c]) {|x,y| a << [x, y] }
     assert_equal([[1,:a],[2,:b],[3,:c],[1,nil],[2,nil]], a)
+
+    ary = Object.new
+    def ary.to_a;   [1, 2]; end
+    def ary.to_ary; [3, 4]; end
+    assert_equal([[1, 3], [2, 4], [3, nil], [1, nil], [2, nil]], @obj.zip(ary))
   end
 
   def test_take

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