ruby-dev

遠藤です。

2010年6月17日6:31 Yukihiro Matsumoto <[email protected]>:
> が、もともとの動機とは別として、「&」1文字でそのコンテキスト
> のブロックを渡すのは、面白いアイディアだと思います。この場合
> は、仮引数リストのブロック引数がなくても、ブロックを渡すこと
> になるんですかね。


パッチを書いてみました。思ったより小さく書けました。

  def foo
    yield
  end

  def bar
    foo(&)
  end

  bar { p 1 }  #=> 1


カッコを省略した場合、

  foo &
  bar

というのが foo & bar なのか foo(&); bar なのか曖昧という問題が
ありました。が、互換性重視で foo & bar と解釈するようになってい
ます。というか書いてみたらそうなった。conflict は出ません。


diff --git a/compile.c b/compile.c
index 2fd804c..3f8c331 100644
--- a/compile.c
+++ b/compile.c
@@ -2863,8 +2863,13 @@ setup_args(rb_iseq_t *iseq, LINK_ANCHOR *args,
NODE *argn, unsigned long *flag)
     INIT_ANCHOR(arg_block);
     INIT_ANCHOR(args_splat);
     if (argn && nd_type(argn) == NODE_BLOCK_PASS) {
-	COMPILE(arg_block, "block", argn->nd_body);
-	*flag |= VM_CALL_ARGS_BLOCKARG_BIT;
+	if ((VALUE)argn->nd_body != (VALUE)-1) {
+	    COMPILE(arg_block, "block", argn->nd_body);
+	    *flag |= VM_CALL_ARGS_BLOCKARG_BIT;
+	}
+	else {
+	    *flag |= VM_CALL_ARGS_BLOCKTRGH_BIT;
+	}
 	argn = argn->nd_head;
     }

diff --git a/node.c b/node.c
index 65bc541..85574b4 100644
--- a/node.c
+++ b/node.c
@@ -621,7 +621,12 @@ dump_node(VALUE buf, VALUE indent, int comment, NODE *node)
 	ANN("example: foo(x, &blk)");
 	F_NODE(nd_head, "other arguments");
 	LAST_NODE;
-	F_NODE(nd_body, "block argument");
+	if ((VALUE)node->nd_body != (VALUE)-1) {
+	    F_NODE(nd_body, "block argument");
+	}
+	else {
+	    F_MSG(nd_body, "block argument", "-1 (anonymous)");
+	}
 	break;

       case NODE_DEFN:
diff --git a/parse.y b/parse.y
index e085088..b0b946b 100644
--- a/parse.y
+++ b/parse.y
@@ -2459,6 +2459,14 @@ block_arg	: tAMPER arg_value
 			$$ = $2;
 		    %*/
 		    }
+		| tAMPER
+		    {
+		    /*%%%*/
+			$$ = NEW_BLOCK_PASS(-1);
+		    /*%
+			$$ = dispatch0(anonymous_block_arg);
+		    %*/
+		    }
 		;

 opt_block_arg	: ',' block_arg
diff --git a/vm_core.h b/vm_core.h
index 7676b2f..f0fa3a3 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -544,6 +544,7 @@ typedef struct {
 #define VM_CALL_TAILRECURSION_BIT  (0x01 << 6)
 #define VM_CALL_SUPER_BIT          (0x01 << 7)
 #define VM_CALL_OPT_SEND_BIT       (0x01 << 8)
+#define VM_CALL_ARGS_BLOCKTRGH_BIT (0x01 << 9)

 #define VM_SPECIAL_OBJECT_VMCORE       0x01
 #define VM_SPECIAL_OBJECT_CBASE        0x02
diff --git a/vm_insnhelper.c b/vm_insnhelper.c
index 985a2fb..2a127d7 100644
--- a/vm_insnhelper.c
+++ b/vm_insnhelper.c
@@ -261,6 +261,10 @@ caller_setup_args(const rb_thread_t *th,
rb_control_frame_t *cfp, VALUE flag,
 		*block = blockptr;
 	    }
 	}
+	else if (flag & VM_CALL_ARGS_BLOCKTRGH_BIT) {
+	    rb_control_frame_t *reg_cfp = cfp;
+	    *block = GET_BLOCK_PTR();
+	}
 	else if (blockiseq) {
 	    blockptr = RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp);
 	    blockptr->iseq = blockiseq;

-- 
Yusuke Endoh <[email protected]>

Thread

Prev Next

In This Thread

Prev Next

[#41911] [Bug #3644] thread_win32.c / native_stop_timer_thread() がタイマースレッドの終了を待たずに帰ってきてしまう。 — 権兵衛 名無し <redmine@...>

[#41918] [Feature #3647] Array#sample(n, replace=false) — Kenta Murata <redmine@...>

[#41923] [Feature #3649] Array#sample, Array#shuffle, Array#shuffle! で使用する乱数生成器を指定するためにオプショナル引数を追加する — Kenta Murata <redmine@...>

[#41924] [Bug #3650] NEWSの不整合 — Kazuhiro NISHIYAMA <redmine@...>

[#41925] Ruby committers Q&A at RubyKaigi — Shugo Maeda <shugo@...>

[#41927] Release engineering status of 1.9.2-p0 — Yusuke ENDOH <mame@...>

[#41931] [Bug #3657] make cleanがファイルを削除しすぎ — Takahiro Kambe <redmine@...>

[#41933] *array で異常終了 — 小田 利通 <oda@...>

[#41936] [Bug #3659] Marshal.load(Marshal.dump(10.0)) => 1.0 — Tomoyuki Chikanaga <redmine@...>

[#41953] [bug:trunk] call File.lchmod via rb_funcall [BUG] vm_call0: unsupported method type (7) — Tanaka Akira <akr@...>

[#41956] [Bug #3468][Closed] .cvsignore — Nobuyoshi Nakada <redmine@...>

[#41957] 1.9.2でtest_require_too_long_filename(TestRequire)がFailureになる — kimura wataru <kimuraw@...>

[#41962] Re: [ruby-cvs:36129] Ruby:r28927 (ruby_1_9_2): merges r28835 from trunk into ruby_1_9_2. — Masaki Suketa <masaki.suketa@...>

[#41965] [Bug #3672] PTY.getpty with non exist program — Yui NARUSE <redmine@...>

[#41966] [Bug #3673] PTY.getpty with IO.pipe doesn't finish on FreeBSD — Yui NARUSE <redmine@...>

[#41967] [Bug #3674] dRuby サーバプロセスを停止する時に時間がかかることがある — Tomoyuki Chikanaga <redmine@...>

[#41969] [Feature #3675] String#prepend, String#>> — Sora Harakami <redmine@...>

[#41970] test/unit.rb:44: warning: instance variable @init_hook not initialized — Tanaka Akira <akr@...>

[#41971] Re: [ruby-cvs:36152] Ruby:r28950 (trunk): [ruby-core:31658] — "NARUSE, Yui" <naruse@...>

[#41972] [Bug #3676] CMath.cbrt(-8)の結果が複素数にならない — tadayoshi funaba <redmine@...>

[#41974] Re: [ruby-cvs:36157] Ruby:r28955 (trunk): * complex.c (nucomp_to_[ifr]): don't allow complex with in-exact — Yukihiro Matsumoto <matz@...>

[#41995] Re: [ruby-core:31672] [Bug #3678] CMath.sqrt(1.i) results to 0.0+0.0i — Urabe Shyouhei <shyouhei@...>

[#42003] WEBrickに関するセキュリティ修正 (CVE-2010-0541) — Hideki Yamane <henrich@...>

[#42022] [Bug #3693] visibility hidden functions — Narihiro Nakamura <redmine@...>

[#42031] [Bug #3695] r28978 fails to make all — Shyouhei Urabe <redmine@...>

[#42038] [Bug: trunk] Fwd: [ruby-list:47272] case when 整数と実数の比較 (ruby 1.9) — SASADA Koichi <ko1@...>

[#42040] [Bug #3674] dRuby サーバプロセスを停止する時に時間がかかることがある — Tomoyuki Chikanaga <redmine@...>

[#42042] GC::profiler.report for large memory. — Tomoaki NISHIYAMA <tomoakin@...>

[#42050] [Bug #3703] ChangeLog too big. — Shyouhei Urabe <redmine@...>

[#42057] rdf generated by rss library is not valid — Tanaka Akira <akr@...>

[#42058] redmine.ruby-lang.orgのproject数を減らせないか？ — "NAKAMURA, Hiroshi" <nakahiro@...>

[#42063] [Bug #3706] dependency from version.o to version.h — Yuki Sonoda <redmine@...>

[#42067] [Bug #3708] Array#permutation がおかしな結果を返す — Shumpei Akai <redmine@...>

[#42070] [Bug #3708][Closed] Array#permutation がおかしな結果を返す — Kenta Murata <redmine@...>

[#42071] [Bug #3708][Open] Array#permutation がおかしな結果を返す — Kenta Murata <redmine@...>

[#42077] [Bug #3708][Closed] Array#permutation がおかしな結果を返す — Kenta Murata <redmine@...>

[#42078] [Backport #3708][Assigned] Array#permutation がおかしな結果を返す — Kenta Murata <redmine@...>

[#42079] Re: [ruby-cvs:36248] Ruby:r29048 (trunk): * backport r28621 and r28632 from ruby_1_8; — "NARUSE, Yui" <naruse@...>

[#42083] [Bug #3720] test_marshal_dump_extra_iv doesn't check as intended — Tomoyuki Chikanaga <redmine@...>

[#42086] valgrind and test/ruby/test_regexp.rb — Tanaka Akira <akr@...>

[#42089] [Bug #3733] $SAFE==1環境下でtaintな文字列のFile.expand_path — Tadashi TADA <redmine@...>

[#42090] Math::atan2(0, 0) on ruby 1.9.2 — KUBO Takehiro <kubo@...>

[#42093] version.hのRUBY_VERSION_TEENYが古いのでは？ — Moru <lateau@...>

[#42100] make distclean時エラーメッセージ — Moru <lateau@...>

[#42102] DevelopersMeeting20100827 — SASADA Koichi <ko1@...>

[#42105] [Bug #3734] Float('0xf.fp') がエラーにならない — tadayoshi funaba <redmine@...>

[#42111] [Bug #3459][Closed] test_regexp.rb Segmentation fault on x64-mswin64 — Yui NARUSE <redmine@...>

[#42116] [Bug #3736] Complex#argがエラーになることがある — tadayoshi funaba <redmine@...>

[#42125] vc9 x64でtrunk dlがコンパイルできない — kuwamoto shintaro <beuniv@...>

[#42133] [Bug #3742] failed to allocate memory: /^()(?>\g<1>)*$/ on x64-mswin64 — shintaro kuwamoto <redmine@...>

[#42148] Rubygems on Ruby 1.9.2 and yaml. — Takahiro Kambe <taca@...>

[#42150] [Bug #3734][Closed] Float('0xf.fp') がエラーにならない — Yui NARUSE <redmine@...>

[#42151] [Feature #3753] value of def-expr — Usaku NAKAMURA <redmine@...>

[#42154] [Ruby 1.9-Bug#3759][Open] make rdocで不要と思われるファイル"rdoc/Set/dig = {}/cdesc-dig = {}.ri"が生成される — Wataru Kimura <redmine@...>

[#42155] Math モジュールの互換性(was: Math::atan2(0, 0) on ruby 1.9.2) — KUBO Takehiro <kubo@...>

[#42156] [Ruby 1.9-Bug#3759][Closed] make rdocで不要と思われるファイル"rdoc/Set/dig = {}/cdesc-dig = {}.ri"が生成される — Nobuyoshi Nakada <redmine@...>

[#42158] [Ruby-Bug#3770][Open] ruby test/dl/test_callback.rbでBus Error — Shota Fukumori <redmine@...>

[#42159] [Ruby 1.9-Bug#3771][Open] VC++ can't make ext/tk with enabling stubs — Akio Tajima <redmine@...>

[#42162] Bug #3722 に関するご報告 — Satoshi Shiba <shiba@...>

[#42164] [Ruby 1.9-Bug#3774][Rejected] irbで日本語が入力できない — Yui NARUSE <redmine@...>

[#42165] [Ruby 1.9-Bug#3774] irbで日本語が入力できない — Takeyuki Fujioka <redmine@...>

[#42166] Ruby'sライセンスの、BSDLとのデュアルライセンスへの変更 — "NARUSE, Yui" <naruse@...>

[ruby-dev:42129] Re: [Feature:trunk] argument delegation

Thread

In This Thread

[#41911] [Bug #3644] thread_win32.c / native_stop_timer_thread() がタイマースレッドの終了を待たずに帰ってきてしまう。 — 権兵衛名無し <redmine@...>

[#41933] *array で異常終了 — 小田利通 <oda@...>