From eda5ffe5245cfd457f2e02bee51c2a61ed001481 Mon Sep 17 00:00:00 2001
From: knu <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 7 Nov 2008 09:31:02 +0000
Subject: * hash.c (rb_hash_key, env_key): Hash#index is renamed to   Hash#key,
 and ENV.index to ENV.key. [ruby-dev:37028]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@20130 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog |  5 +++++
 NEWS      |  8 ++++++++
 hash.c    | 33 ++++++++++++++++++++++++++-------
 3 files changed, 39 insertions(+), 7 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 794d2aa0c6..a6d9a2ca7e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Nov  7 18:29:09 2008  Akinori MUSHA  <knu@iDaemons.org>
+
+	* hash.c (rb_hash_key, env_key): Hash#index is renamed to
+	  Hash#key, and ENV.index to ENV.key. [ruby-dev:37028]
+
 Fri Nov  7 02:08:04 2008  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* lib/rexml/entity.rb (unnormalized): do not call
diff --git a/NEWS b/NEWS
index 39223610fd..96721611ff 100644
--- a/NEWS
+++ b/NEWS
@@ -30,6 +30,14 @@ with all sufficient information, see the ChangeLog file.
 
     New method.
 
+  * Hash#key
+
+    Renamed from Hash#index.
+
+  * ENV.key
+
+    Renamed from ENV.index.
+
 * set
 
   Set#classify
diff --git a/hash.c b/hash.c
index 3fe1ff8bb8..f4297589d2 100644
--- a/hash.c
+++ b/hash.c
@@ -646,7 +646,7 @@ rb_hash_set_default_proc(hash, proc)
 }
 
 static int
-index_i(key, value, args)
+key_i(key, value, args)
     VALUE key, value;
     VALUE *args;
 {
@@ -676,18 +676,18 @@ rb_hash_delete_key(hash, key)
 
 /*
  *  call-seq:
- *     hsh.index(value)    => key
+ *     hsh.key(value)    => key
  *
  *  Returns the key for a given value. If not found, returns <code>nil</code>.
  *
  *     h = { "a" => 100, "b" => 200 }
- *     h.index(200)   #=> "b"
- *     h.index(999)   #=> nil
+ *     h.key(200)   #=> "b"
+ *     h.key(999)   #=> nil
  *
  */
 
 static VALUE
-rb_hash_index(hash, value)
+rb_hash_key(hash, value)
     VALUE hash, value;
 {
     VALUE args[2];
@@ -695,11 +695,20 @@ rb_hash_index(hash, value)
     args[0] = value;
     args[1] = Qnil;
 
-    rb_hash_foreach(hash, index_i, (st_data_t)args);
+    rb_hash_foreach(hash, key_i, (st_data_t)args);
 
     return args[1];
 }
 
+/* :nodoc: */
+static VALUE
+rb_hash_index(hash, value)
+    VALUE hash, value;
+{
+    rb_warning("Hash#index is deprecated and will be removed in 1.9; use Hash#key");
+    return rb_hash_key(hash, value);
+}
+
 /*
  *  call-seq:
  *     hsh.indexes(key, ...)    => array
@@ -2446,7 +2455,7 @@ env_has_value(dmy, value)
 }
 
 static VALUE
-env_index(dmy, value)
+env_key(dmy, value)
     VALUE dmy, value;
 {
     char **env;
@@ -2471,6 +2480,14 @@ env_index(dmy, value)
     return Qnil;
 }
 
+static VALUE
+env_index(dmy, value)
+    VALUE dmy, value;
+{
+    rb_warning("ENV.index is deprecated and will be removed in 1.9; use ENV.key");
+    return env_key(dmy, value);
+}
+
 static VALUE
 env_indexes(argc, argv)
     int argc;
@@ -2682,6 +2699,7 @@ Init_Hash()
     rb_define_method(rb_cHash,"default=", rb_hash_set_default, 1);
     rb_define_method(rb_cHash,"default_proc", rb_hash_default_proc, 0);
     rb_define_method(rb_cHash,"default_proc=", rb_hash_set_default_proc, 1);
+    rb_define_method(rb_cHash,"key", rb_hash_key, 1);
     rb_define_method(rb_cHash,"index", rb_hash_index, 1);
     rb_define_method(rb_cHash,"indexes", rb_hash_indexes, -1);
     rb_define_method(rb_cHash,"indices", rb_hash_indexes, -1);
@@ -2746,6 +2764,7 @@ Init_Hash()
     rb_define_singleton_method(envtbl,"rehash", env_none, 0);
     rb_define_singleton_method(envtbl,"to_a", env_to_a, 0);
     rb_define_singleton_method(envtbl,"to_s", env_to_s, 0);
+    rb_define_singleton_method(envtbl,"key", env_key, 1);
     rb_define_singleton_method(envtbl,"index", env_index, 1);
     rb_define_singleton_method(envtbl,"indexes", env_indexes, -1);
     rb_define_singleton_method(envtbl,"indices", env_indexes, -1);
-- 
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