For push mode, add pull wrappers around yypush_parse.

[bison.git] / src / parse-gram.y

diff --git a/src/parse-gram.y b/src/parse-gram.y
index 956ddd36f9de98b0a928b36d3c02dca37859c5d6..ba0ef6f936801768919467b98309bc7efaf8b605 100644 (file)
--- a/src/parse-gram.y
+++ b/src/parse-gram.y
@@ -93,13 +93,13 @@ static int current_prec = 0;
   boundary_set (&@$.end, current_file, 1, 1);
 }
 
-/* Only NUMBERS have a value.  */
 %union
 {
   symbol *symbol;
   symbol_list *list;
   int integer;
-  char *chars;
+  char const *chars;
+  char *code;
   assoc assoc;
   uniqstr uniqstr;
   unsigned char character;
@@ -116,8 +116,6 @@ static int current_prec = 0;
 %token PERCENT_TYPE        "%type"
 %token PERCENT_DESTRUCTOR  "%destructor"
 %token PERCENT_PRINTER     "%printer"
-%token PERCENT_SYMBOL_DEFAULT
-                           "%symbol-default"
 
 %token PERCENT_LEFT        "%left"
 %token PERCENT_RIGHT       "%right"
@@ -133,19 +131,19 @@ static int current_prec = 0;
 `----------------------*/
 
 %token
-  PERCENT_AFTER_HEADER    "%after-header"
-  PERCENT_BEFORE_HEADER   "%before-header"
+  PERCENT_CODE            "%code"
+  PERCENT_CODE_TOP        "%code-top"
   PERCENT_DEBUG           "%debug"
   PERCENT_DEFAULT_PREC    "%default-prec"
   PERCENT_DEFINE          "%define"
   PERCENT_DEFINES         "%defines"
-  PERCENT_END_HEADER      "%end-header"
   PERCENT_ERROR_VERBOSE   "%error-verbose"
   PERCENT_EXPECT          "%expect"
   PERCENT_EXPECT_RR      "%expect-rr"
   PERCENT_FILE_PREFIX     "%file-prefix"
   PERCENT_GLR_PARSER      "%glr-parser"
   PERCENT_INITIAL_ACTION  "%initial-action"
+  PERCENT_LANGUAGE        "%language"
   PERCENT_LEX_PARAM       "%lex-param"
   PERCENT_LOCATIONS       "%locations"
   PERCENT_NAME_PREFIX     "%name-prefix"
@@ -155,12 +153,13 @@ static int current_prec = 0;
                          "%nondeterministic-parser"
   PERCENT_OUTPUT          "%output"
   PERCENT_PARSE_PARAM     "%parse-param"
+  PERCENT_PROVIDES        "%provides"
   PERCENT_PURE_PARSER     "%pure-parser"
   PERCENT_PUSH_PARSER     "%push-parser"
   PERCENT_REQUIRE        "%require"
+  PERCENT_REQUIRES        "%requires"
   PERCENT_SKELETON        "%skeleton"
   PERCENT_START           "%start"
-  PERCENT_START_HEADER    "%start-header"
   PERCENT_TOKEN_TABLE     "%token-table"
   PERCENT_VERBOSE         "%verbose"
   PERCENT_YACC            "%yacc"
@@ -177,17 +176,20 @@ static int current_prec = 0;
 %token PROLOGUE        "%{...%}"
 %token SEMICOLON       ";"
 %token TYPE            "type"
+%token TYPE_TAG_ANY    "<*>"
+%token TYPE_TAG_NONE   "<>"
 
 %type <character> CHAR
 %printer { fputs (char_name ($$), stderr); } CHAR
 
 /* braceless is not to be used for rule or symbol actions, as it
    calls translate_code. */
-%type <chars> STRING "{...}" "%{...%}" EPILOGUE braceless content content.opt
+%type <chars> STRING "%{...%}" EPILOGUE braceless content content.opt
+%type <code> "{...}"
 %printer { fputs (quotearg_style (c_quoting_style, $$), stderr); }
-         STRING
+        STRING
 %printer { fprintf (stderr, "{\n%s\n}", $$); }
-         braceless content content.opt "{...}" "%{...%}" EPILOGUE
+        braceless content content.opt "{...}" "%{...%}" EPILOGUE
 
 %type <uniqstr> TYPE ID ID_COLON
 %printer { fprintf (stderr, "<%s>", $$); } TYPE
@@ -222,16 +224,19 @@ prologue_declarations:
 prologue_declaration:
   grammar_declaration
 | "%{...%}"     { prologue_augment (translate_code ($1, @1), @1, union_seen); }
-| "%after-header" braceless        { prologue_augment ($2, @2, true); }
-| "%before-header" braceless       { prologue_augment ($2, @2, false); }
 | "%debug"                         { debug_flag = true; }
 | "%define" STRING content.opt     { muscle_insert ($2, $3); }
 | "%defines"                       { defines_flag = true; }
-| "%end-header" braceless          { muscle_code_grow ("end_header", $2, @2); }
+| "%defines" STRING
+    {
+      defines_flag = true;
+      spec_defines_file = xstrdup ($2);
+    }
 | "%error-verbose"                 { error_verbose = true; }
 | "%expect" INT                    { expected_sr_conflicts = $2; }
 | "%expect-rr" INT                { expected_rr_conflicts = $2; }
-| "%file-prefix" "=" STRING        { spec_file_prefix = $3; }
+| "%file-prefix" STRING            { spec_file_prefix = $2; }
+| "%file-prefix" "=" STRING        { spec_file_prefix = $3; } /* deprecated */
 | "%glr-parser"
     {
       nondeterministic_parser = true;
@@ -241,18 +246,20 @@ prologue_declaration:
     {
       muscle_code_grow ("initial_action", translate_symbol_action ($2, @2), @2);
     }
+| "%language" STRING           { language_argmatch ($2, 1, &@1); }
 | "%lex-param" "{...}"         { add_param ("lex_param", $2, @2); }
 | "%locations"                  { locations_flag = true; }
-| "%name-prefix" "=" STRING     { spec_name_prefix = $3; }
+| "%name-prefix" STRING         { spec_name_prefix = $2; }
+| "%name-prefix" "=" STRING     { spec_name_prefix = $3; } /* deprecated */
 | "%no-lines"                   { no_lines_flag = true; }
 | "%nondeterministic-parser"   { nondeterministic_parser = true; }
-| "%output" "=" STRING          { spec_outfile = $3; }
+| "%output" STRING              { spec_outfile = $2; }
+| "%output" "=" STRING          { spec_outfile = $3; }  /* deprecated */
 | "%parse-param" "{...}"       { add_param ("parse_param", $2, @2); }
 | "%pure-parser"                { pure_parser = true; }
 | "%push-parser"                { push_parser = true; }
 | "%require" STRING             { version_check (&@2, $2); }
-| "%skeleton" STRING            { skeleton = $2; }
-| "%start-header" braceless     { muscle_code_grow ("start_header", $2, @2); }
+| "%skeleton" STRING            { skeleton_arg ($2, 1, &@1); }
 | "%token-table"                { token_table_flag = true; }
 | "%verbose"                    { report_flag = report_states; }
 | "%yacc"                       { yacc_flag = true; }
@@ -271,7 +278,7 @@ grammar_declaration:
       symbol_list *list;
       const char *action = translate_symbol_action ($2, @2);
       for (list = $3; list; list = list->next)
-        symbol_list_destructor_set (list, action, @2);
+       symbol_list_destructor_set (list, action, @2);
       symbol_list_free ($3);
     }
 | "%printer" "{...}" generic_symlist
@@ -279,7 +286,7 @@ grammar_declaration:
       symbol_list *list;
       const char *action = translate_symbol_action ($2, @2);
       for (list = $3; list; list = list->next)
-        symbol_list_printer_set (list, action, @2);
+       symbol_list_printer_set (list, action, @2);
       symbol_list_free ($3);
     }
 | "%default-prec"
@@ -290,6 +297,10 @@ grammar_declaration:
     {
       default_prec = false;
     }
+| "%code" braceless      { prologue_augment ($2, @2, true); }
+| "%code-top" braceless  { prologue_augment ($2, @2, false); }
+| "%provides" braceless  { muscle_code_grow ("provides", $2, @2); }
+| "%requires" braceless  { muscle_code_grow ("requires", $2, @2); }
 ;
 
 
@@ -345,8 +356,8 @@ symbol_declaration:
     }
 | "%type" TYPE symbols.1
     {
-      tag_seen = true;
       symbol_list *list;
+      tag_seen = true;
       for (list = $3; list; list = list->next)
        symbol_type_set (list->content.sym, $2, @2);
       symbol_list_free ($3);
@@ -395,7 +406,8 @@ generic_symlist:
 generic_symlist_item:
   symbol            { $$ = symbol_list_sym_new ($1, @1); }
 | TYPE              { $$ = symbol_list_type_new ($1, @1); }
-| "%symbol-default" { $$ = symbol_list_default_new (@1); }
+| "<*>"             { $$ = symbol_list_default_tagged_new (@1); }
+| "<>"             { $$ = symbol_list_default_tagless_new (@1); }
 ;
 
 /* One token definition.  */