%{/* Bison Grammar Parser -*- C -*-
- Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation,
+ Inc.
This file is part of Bison, the GNU Compiler Compiler.
%locations
%pure-parser
%error-verbose
-%defines
%name-prefix="gram_"
+%expect 0
%initial-action
{
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;
`----------------------*/
%token
- PERCENT_AFTER_HEADER "%after-header"
- PERCENT_BEFORE_HEADER "%before-header"
+ PERCENT_CODE "%code"
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"
PERCENT_OUTPUT "%output"
PERCENT_PARSE_PARAM "%parse-param"
PERCENT_PURE_PARSER "%pure-parser"
+ PERCENT_PUSH_PARSER "%push-parser"
+ PERCENT_PUSH_PULL_PARSER
+ "%push-pull-parser"
PERCENT_REQUIRE "%require"
PERCENT_SKELETON "%skeleton"
PERCENT_START "%start"
- PERCENT_START_HEADER "%start-header"
PERCENT_TOKEN_TABLE "%token-table"
PERCENT_VERBOSE "%verbose"
PERCENT_YACC "%yacc"
%token PROLOGUE "%{...%}"
%token SEMICOLON ";"
%token TYPE "type"
+%token TYPE_TAG_ANY "<*>"
+%token TYPE_TAG_NONE "<>"
%type <character> CHAR
%printer { fputs (char_name ($$), stderr); } CHAR
/* braceless is not to be used for rule or symbol actions, as it
- calls translate_code. */
-%type <chars> STRING "{...}" "%{...%}" EPILOGUE braceless content content.opt
+ calls code_props_plain_init. */
+%type <chars> STRING "%{...%}" EPILOGUE braceless content.opt
+%type <code> "{...}"
%printer { fputs (quotearg_style (c_quoting_style, $$), stderr); }
- STRING
+ STRING
%printer { fprintf (stderr, "{\n%s\n}", $$); }
- braceless content content.opt "{...}" "%{...%}" EPILOGUE
+ braceless content.opt "{...}" "%{...%}" EPILOGUE
-%type <uniqstr> TYPE ID ID_COLON
+%type <uniqstr> TYPE ID ID_COLON variable
%printer { fprintf (stderr, "<%s>", $$); } TYPE
-%printer { fputs ($$, stderr); } ID
+%printer { fputs ($$, stderr); } ID variable
%printer { fprintf (stderr, "%s:", $$); } ID_COLON
%type <integer> INT
%printer { fprintf (stderr, "%s:", $$->tag); } id_colon
%type <assoc> precedence_declarator
-%type <list> symbols.1
+%type <list> symbols.1 generic_symlist generic_symlist_item
%%
input:
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); }
+| "%{...%}"
+ {
+ code_props plain_code;
+ code_props_plain_init (&plain_code, $1, @1);
+ code_props_translate_code (&plain_code);
+ gram_scanner_last_string_free ();
+ muscle_code_grow (union_seen ? "post_prologue" : "pre_prologue",
+ plain_code.code, @1);
+ code_scanner_last_string_free ();
+ }
| "%debug" { debug_flag = true; }
-| "%define" STRING content.opt { muscle_insert ($2, $3); }
+| "%define" variable content.opt
+ {
+ char const name_prefix[] = "percent_define(";
+ size_t length = strlen ($2);
+ char *name = xmalloc (sizeof name_prefix + length + 1);
+ strcpy (name, name_prefix);
+ strcpy (name + sizeof name_prefix - 1, $2);
+ strcpy (name + sizeof name_prefix - 1 + length, ")");
+ if (muscle_find_const (name))
+ warn_at (@2, _("%s `%s' redefined"), "%define variable", $2);
+ MUSCLE_INSERT_STRING (uniqstr_new (name), $3);
+ free (name);
+ muscle_grow_user_name_list ("percent_define_user_variables", $2, @2);
+ }
| "%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;
}
| "%initial-action" "{...}"
{
- muscle_code_grow ("initial_action", translate_symbol_action ($2, @2), @2);
+ code_props action;
+ code_props_symbol_action_init (&action, $2, @2);
+ code_props_translate_code (&action);
+ gram_scanner_last_string_free ();
+ muscle_code_grow ("initial_action", action.code, @2);
+ code_scanner_last_string_free ();
}
+| "%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; pull_parser = false; }
+| "%push-pull-parser" { push_parser = true; pull_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; }
{
grammar_start_symbol_set ($2, @2);
}
-| "%destructor" "{...}" symbols.1
+| "%destructor" "{...}" generic_symlist
{
symbol_list *list;
- const char *action = translate_symbol_action ($2, @2);
for (list = $3; list; list = list->next)
- symbol_destructor_set (list->sym, action, @2);
+ symbol_list_destructor_set (list, $2, @2);
symbol_list_free ($3);
}
-| "%printer" "{...}" symbols.1
+| "%printer" "{...}" generic_symlist
{
symbol_list *list;
- const char *action = translate_symbol_action ($2, @2);
for (list = $3; list; list = list->next)
- symbol_printer_set (list->sym, action, @2);
+ symbol_list_printer_set (list, $2, @2);
symbol_list_free ($3);
}
| "%default-prec"
{
default_prec = false;
}
+| "%code" braceless
+ {
+ muscle_code_grow ("percent_code_unqualified", $2, @2);
+ code_scanner_last_string_free ();
+ }
+| "%code" ID braceless
+ {
+ char const name_prefix[] = "percent_code(";
+ size_t length = strlen ($2);
+ char *name = xmalloc (sizeof name_prefix + length + 1);
+ strcpy (name, name_prefix);
+ strcpy (name + sizeof name_prefix - 1, $2);
+ strcpy (name + sizeof name_prefix - 1 + length, ")");
+ muscle_code_grow (uniqstr_new (name), $3, @3);
+ free (name);
+ code_scanner_last_string_free ();
+ muscle_grow_user_name_list ("percent_code_user_qualifiers", $2, @2);
+ }
;
;
grammar_declaration:
- "%union" union_name "{...}"
+ "%union" union_name braceless
{
- char const *body = $3;
-
- if (union_seen)
- {
- /* Concatenate the union bodies, turning the first one's
- trailing '}' into '\n', and omitting the second one's '{'. */
- char *code = muscle_find ("stype");
- code[strlen (code) - 1] = '\n';
- body++;
- }
-
union_seen = true;
- muscle_code_grow ("stype", body, @3);
+ muscle_code_grow ("stype", $3, @3);
+ code_scanner_last_string_free ();
}
;
}
| "%type" TYPE symbols.1
{
- tag_seen = true;
symbol_list *list;
+ tag_seen = true;
for (list = $3; list; list = list->next)
- symbol_type_set (list->sym, $2, @2);
+ symbol_type_set (list->content.sym, $2, @2);
symbol_list_free ($3);
}
;
++current_prec;
for (list = $3; list; list = list->next)
{
- symbol_type_set (list->sym, current_type, @2);
- symbol_precedence_set (list->sym, current_prec, $1, @1);
+ symbol_type_set (list->content.sym, current_type, @2);
+ symbol_precedence_set (list->content.sym, current_prec, $1, @1);
}
symbol_list_free ($3);
current_type = NULL;
| TYPE { current_type = $1; tag_seen = true; }
;
-/* One or more nonterminals to be %typed. */
+/* One or more symbols to be %typed. */
symbols.1:
- symbol { $$ = symbol_list_new ($1, @1); }
-| symbols.1 symbol { $$ = symbol_list_prepend ($1, $2, @2); }
+ symbol
+ { $$ = symbol_list_sym_new ($1, @1); }
+| symbols.1 symbol
+ { $$ = symbol_list_prepend ($1, symbol_list_sym_new ($2, @2)); }
+;
+
+generic_symlist:
+ generic_symlist_item { $$ = $1; }
+| generic_symlist generic_symlist_item { $$ = symbol_list_prepend ($1, $2); }
+;
+
+generic_symlist_item:
+ symbol { $$ = symbol_list_sym_new ($1, @1); }
+| TYPE { $$ = symbol_list_type_new ($1, @1); }
+| "<*>" { $$ = symbol_list_default_tagged_new (@1); }
+| "<>" { $$ = symbol_list_default_tagless_new (@1); }
;
/* One token definition. */
;
-/*-----------*
- | content. |
- *-----------*/
+/*----------------------------*
+ | variable and content.opt. |
+ *---------------------------*/
-content:
- STRING
-| braceless
-;
+variable:
+ ID
+ | STRING { $$ = uniqstr_new ($1); } /* deprecated and not M4-friendly */
+ ;
/* Some content or "1" by default. */
content.opt:
static char one[] = "1";
$$ = one;
}
-| content
+| STRING
;
+/*-------------*
+ | braceless. |
+ *-------------*/
+
braceless:
"{...}"
{
+ code_props plain_code;
$1[strlen ($1) - 1] = '\n';
- $$ = translate_code ($1 + 1, @1);
+ code_props_plain_init (&plain_code, $1+1, @1);
+ code_props_translate_code (&plain_code);
+ gram_scanner_last_string_free ();
+ $$ = plain_code.code;
}
;
STRING
{
$$ = symbol_get (quotearg_style (c_quoting_style, $1), @1);
- symbol_class_set ($$, token_sym, @1, false);
+ symbol_class_set ($$,
+ current_class == unknown_sym
+ ? token_sym : current_class, @1, false);
}
;
/* Nothing. */
| "%%" EPILOGUE
{
- muscle_code_grow ("epilogue", translate_code ($2, @2), @2);
+ code_props plain_code;
+ code_props_plain_init (&plain_code, $2, @2);
+ code_props_translate_code (&plain_code);
gram_scanner_last_string_free ();
+ muscle_code_grow ("epilogue", plain_code.code, @2);
+ code_scanner_last_string_free ();
}
;
projects / bison.git / blobdiff