* keywords, parse.y (__ENCODING__): represent script encoding.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@14384 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

5 files changed, 65 insertions, 53 deletions

diff --git a/ChangeLog b/ChangeLog
index 01611d97f..f2f4d50af 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Dec 21 12:22:20 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* keywords, parse.y (__ENCODING__): represent script encoding.
+
 Fri Dec 21 12:16:50 2007  Tanaka Akira  <akr@fsij.org>
 
 	* string.c (rb_str_is_ascii_only_p): new method ascii_only?.
diff --git a/keywords b/keywords
index 8741eb46b..e89cff653 100644
--- a/keywords
+++ b/keywords
@@ -6,6 +6,7 @@ const struct kwtable *rb_reserved_word _((const char *, unsigned int));
 
 struct kwtable;
 %%
+__ENCODING__, {keyword__ENCODING__, keyword__ENCODING__}, EXPR_END
 __LINE__, {keyword__LINE__, keyword__LINE__}, EXPR_END
 __FILE__, {keyword__FILE__, keyword__FILE__}, EXPR_END
 BEGIN, {keyword_BEGIN, keyword_BEGIN}, EXPR_END
diff --git a/lex.c.blt b/lex.c.blt
index 7292404db..5a9d7f6a0 100644
--- a/lex.c.blt
+++ b/lex.c.blt
@@ -36,12 +36,12 @@ const struct kwtable *rb_reserved_word _((const char *, unsigned int));
 #line 7 "keywords"
 struct kwtable;
 
-#define TOTAL_KEYWORDS 40
+#define TOTAL_KEYWORDS 41
 #define MIN_WORD_LENGTH 2
-#define MAX_WORD_LENGTH 8
-#define MIN_HASH_VALUE 6
+#define MAX_WORD_LENGTH 12
+#define MIN_HASH_VALUE 8
 #define MAX_HASH_VALUE 50
-/* maximum key range = 45, duplicates = 0 */
+/* maximum key range = 43, duplicates = 0 */
 
 #ifdef __GNUC__
 __inline
@@ -63,8 +63,8 @@ hash (str, len)
       51, 51, 51, 51, 51, 51, 51, 51, 51, 51,
       51, 51, 51, 51, 51, 51, 51, 51, 51, 51,
       51, 51, 51, 51, 51, 51, 51, 51, 51, 51,
-      51, 51, 51, 23, 51, 51, 13, 51,  1,  1,
-      11, 12, 51, 51, 51, 51, 10, 51, 12, 51,
+      51, 51, 51, 26, 51, 51, 14, 51, 16,  8,
+      11, 13, 51, 51, 51, 51, 10, 51, 13, 51,
       51, 51, 51, 51, 51, 51, 51, 51, 51, 51,
       51, 51, 51, 51, 51, 11, 51, 13,  1, 26,
        4,  1,  8, 28, 51, 23, 51,  1,  1, 27,
@@ -109,89 +109,89 @@ rb_reserved_word (str, len)
 {
   static const struct kwtable wordlist[] =
     {
-      {""}, {""}, {""}, {""}, {""}, {""},
-#line 12 "keywords"
-      {"END", {keyword_END, keyword_END}, EXPR_END},
-      {""},
-#line 16 "keywords"
+      {""}, {""}, {""}, {""}, {""}, {""}, {""}, {""},
+#line 17 "keywords"
       {"break", {keyword_break, keyword_break}, EXPR_MID},
-#line 22 "keywords"
+#line 23 "keywords"
       {"else", {keyword_else, keyword_else}, EXPR_BEG},
-#line 32 "keywords"
+#line 33 "keywords"
       {"nil", {keyword_nil, keyword_nil}, EXPR_END},
-#line 25 "keywords"
+#line 26 "keywords"
       {"ensure", {keyword_ensure, keyword_ensure}, EXPR_BEG},
-#line 24 "keywords"
+#line 25 "keywords"
       {"end", {keyword_end, keyword_end}, EXPR_END},
-#line 41 "keywords"
+#line 42 "keywords"
       {"then", {keyword_then, keyword_then}, EXPR_BEG},
-#line 33 "keywords"
+#line 34 "keywords"
       {"not", {keyword_not, keyword_not}, EXPR_VALUE},
-#line 26 "keywords"
+#line 27 "keywords"
       {"false", {keyword_false, keyword_false}, EXPR_END},
-#line 39 "keywords"
+#line 40 "keywords"
       {"self", {keyword_self, keyword_self}, EXPR_END},
-#line 23 "keywords"
+#line 24 "keywords"
       {"elsif", {keyword_elsif, keyword_elsif}, EXPR_VALUE},
-#line 36 "keywords"
+#line 37 "keywords"
       {"rescue", {keyword_rescue, modifier_rescue}, EXPR_MID},
-#line 42 "keywords"
+#line 43 "keywords"
       {"true", {keyword_true, keyword_true}, EXPR_END},
-#line 45 "keywords"
+#line 46 "keywords"
       {"until", {keyword_until, modifier_until}, EXPR_VALUE},
-#line 44 "keywords"
+#line 45 "keywords"
       {"unless", {keyword_unless, modifier_unless}, EXPR_VALUE},
-#line 38 "keywords"
+#line 39 "keywords"
       {"return", {keyword_return, keyword_return}, EXPR_MID},
-#line 19 "keywords"
+#line 20 "keywords"
       {"def", {keyword_def, keyword_def}, EXPR_FNAME},
-#line 14 "keywords"
+#line 15 "keywords"
       {"and", {keyword_and, keyword_and}, EXPR_VALUE},
-#line 21 "keywords"
+#line 22 "keywords"
       {"do", {keyword_do, keyword_do}, EXPR_BEG},
-#line 48 "keywords"
+#line 49 "keywords"
       {"yield", {keyword_yield, keyword_yield}, EXPR_ARG},
-#line 27 "keywords"
+#line 28 "keywords"
       {"for", {keyword_for, keyword_for}, EXPR_VALUE},
-#line 43 "keywords"
+#line 44 "keywords"
       {"undef", {keyword_undef, keyword_undef}, EXPR_FNAME},
-#line 34 "keywords"
+#line 35 "keywords"
       {"or", {keyword_or, keyword_or}, EXPR_VALUE},
-#line 29 "keywords"
+#line 30 "keywords"
       {"in", {keyword_in, keyword_in}, EXPR_VALUE},
-#line 46 "keywords"
+#line 47 "keywords"
       {"when", {keyword_when, keyword_when}, EXPR_VALUE},
-#line 37 "keywords"
+#line 38 "keywords"
       {"retry", {keyword_retry, keyword_retry}, EXPR_END},
-#line 28 "keywords"
+#line 29 "keywords"
       {"if", {keyword_if, modifier_if}, EXPR_VALUE},
-#line 17 "keywords"
+#line 18 "keywords"
       {"case", {keyword_case, keyword_case}, EXPR_VALUE},
-#line 35 "keywords"
+#line 36 "keywords"
       {"redo", {keyword_redo, keyword_redo}, EXPR_END},
-#line 31 "keywords"
+#line 32 "keywords"
       {"next", {keyword_next, keyword_next}, EXPR_MID},
-#line 40 "keywords"
+#line 41 "keywords"
       {"super", {keyword_super, keyword_super}, EXPR_ARG},
-#line 30 "keywords"
+#line 31 "keywords"
       {"module", {keyword_module, keyword_module}, EXPR_VALUE},
-#line 15 "keywords"
+#line 16 "keywords"
       {"begin", {keyword_begin, keyword_begin}, EXPR_BEG},
-#line 9 "keywords"
-      {"__LINE__", {keyword__LINE__, keyword__LINE__}, EXPR_END},
 #line 10 "keywords"
-      {"__FILE__", {keyword__FILE__, keyword__FILE__}, EXPR_END},
+      {"__LINE__", {keyword__LINE__, keyword__LINE__}, EXPR_END},
 #line 11 "keywords"
-      {"BEGIN", {keyword_BEGIN, keyword_BEGIN}, EXPR_END},
-#line 20 "keywords"
-      {"defined?", {keyword_defined, keyword_defined}, EXPR_ARG},
+      {"__FILE__", {keyword__FILE__, keyword__FILE__}, EXPR_END},
+#line 9 "keywords"
+      {"__ENCODING__", {keyword__ENCODING__, keyword__ENCODING__}, EXPR_END},
 #line 13 "keywords"
+      {"END", {keyword_END, keyword_END}, EXPR_END},
+#line 14 "keywords"
       {"alias", {keyword_alias, keyword_alias}, EXPR_FNAME},
-      {""}, {""},
-#line 18 "keywords"
+#line 12 "keywords"
+      {"BEGIN", {keyword_BEGIN, keyword_BEGIN}, EXPR_END},
+#line 21 "keywords"
+      {"defined?", {keyword_defined, keyword_defined}, EXPR_ARG},
+#line 19 "keywords"
       {"class", {keyword_class, keyword_class}, EXPR_CLASS},
       {""}, {""},
-#line 47 "keywords"
+#line 48 "keywords"
       {"while", {keyword_while, modifier_while}, EXPR_VALUE}
     };
 
@@ -209,6 +209,6 @@ rb_reserved_word (str, len)
     }
   return 0;
 }
-#line 49 "keywords"
+#line 50 "keywords"
 
 #endif
diff --git a/lex.c.src b/lex.c.src
index 8741eb46b..e89cff653 100644
--- a/lex.c.src
+++ b/lex.c.src
@@ -6,6 +6,7 @@ const struct kwtable *rb_reserved_word _((const char *, unsigned int));
 
 struct kwtable;
 %%
+__ENCODING__, {keyword__ENCODING__, keyword__ENCODING__}, EXPR_END
 __LINE__, {keyword__LINE__, keyword__LINE__}, EXPR_END
 __FILE__, {keyword__FILE__, keyword__FILE__}, EXPR_END
 BEGIN, {keyword_BEGIN, keyword_BEGIN}, EXPR_END
diff --git a/parse.y b/parse.y
index 4c206a8c3..d86cd71af 100644
--- a/parse.y
+++ b/parse.y
@@ -645,6 +645,7 @@ static void ripper_compile_error(struct parser_params*, const char *fmt, ...);
 	keyword_END
 	keyword__LINE__
 	keyword__FILE__
+	keyword__ENCODING__
 
 %token <id>   tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL
 %token <node> tINTEGER tFLOAT tSTRING_CONTENT tCHAR
@@ -1759,7 +1760,8 @@ op		: '|'		{ ifndef_ripper($$ = '|'); }
 		| '`'		{ ifndef_ripper($$ = '`'); }
 		;
 
-reswords	: keyword__LINE__ | keyword__FILE__ | keyword_BEGIN | keyword_END
+reswords	: keyword__LINE__ | keyword__FILE__ | keyword__ENCODING__
+		| keyword_BEGIN | keyword_END
 		| keyword_alias | keyword_and | keyword_begin
 		| keyword_break | keyword_case | keyword_class | keyword_def
 		| keyword_defined | keyword_do | keyword_else | keyword_elsif
@@ -3923,6 +3925,7 @@ variable	: tIDENTIFIER
 		| keyword_false {ifndef_ripper($$ = keyword_false);}
 		| keyword__FILE__ {ifndef_ripper($$ = keyword__FILE__);}
 		| keyword__LINE__ {ifndef_ripper($$ = keyword__LINE__);}
+		| keyword__ENCODING__ {ifndef_ripper($$ = keyword__ENCODING__);}
 		;
 
 var_ref		: variable
@@ -7569,6 +7572,9 @@ gettable_gen(struct parser_params *parser, ID id)
     else if (id == keyword__LINE__) {
 	return NEW_LIT(INT2FIX(ruby_sourceline));
     }
+    else if (id == keyword__ENCODING__) {
+	return NEW_LIT(rb_enc_from_encoding(parser->enc));
+    }
     else if (is_local_id(id)) {
 	if (dyna_in_block() && dvar_defined(id)) return NEW_DVAR(id);
 	if (local_id(id)) return NEW_LVAR(id);