%{
#include "system.h"
+#include "complain.h"
#include "muscle_tab.h"
#include "files.h"
#include "getargs.h"
correctly typed access to it. */
#define yycontrol ((gram_control_t *) gram_control)
-/* Request detailed parse error messages, and pass them to
- GRAM_ERROR. */
+/* Request detailed parse error messages, and pass them to GRAM_ERROR.
+ FIXME: depends on the undocumented availability of YYLLOC.t */
#undef yyerror
#define yyerror(Msg) \
- gram_error (yycontrol, &yylloc, Msg)
+ gram_error (&yylloc, Msg)
-/* When debugging our pure parser, we want to see values and locations
- of the tokens. */
#define YYPRINT(File, Type, Value) \
- yyprint (File, &yylloc, Type, &Value)
-static void yyprint (FILE *file, const location_t *loc,
- int type, const yystype *value);
+ yyprint (File, Type, &Value)
+static void yyprint (FILE *file, int type, const yystype *value);
symbol_class current_class = unknown_sym;
char *current_type = 0;
symbol_t *current_lhs;
location_t current_lhs_location;
-associativity current_assoc;
+assoc_t current_assoc;
int current_prec = 0;
+braced_code_t current_braced_code = action_braced_code;
%}
symbol_list_t *list;
int integer;
char *string;
- associativity assoc;
+ assoc_t assoc;
};
-/* Define the tokens together with there human representation. */
-%token GRAM_EOF 0 "end of string"
-%token STRING CHARACTER
-%token INT
-
-%token PERCENT_TOKEN "%token"
-%token PERCENT_NTERM "%nterm"
-%token PERCENT_TYPE "%type"
-%token PERCENT_UNION "%union"
-%token PERCENT_LEFT "%left"
-%token PERCENT_RIGHT "%right"
-%token PERCENT_NONASSOC "%nonassoc"
-
-%token PERCENT_EXPECT "%expect"
-%token PERCENT_START "%start"
-%token PERCENT_PREC "%prec"
-%token PERCENT_VERBOSE "%verbose"
+/* Define the tokens together with their human representation. */
+%token GRAM_EOF 0 "end of file"
+%token STRING "string"
+%token CHARACTER "character"
+%token INT "integer"
+
+%token PERCENT_TOKEN "%token"
+%token PERCENT_NTERM "%nterm"
+
+%token PERCENT_TYPE "%type"
+%token PERCENT_DESTRUCTOR "%destructor"
+%token PERCENT_PRINTER "%printer"
+
+%token PERCENT_UNION "%union"
+
+%token PERCENT_LEFT "%left"
+%token PERCENT_RIGHT "%right"
+%token PERCENT_NONASSOC "%nonassoc"
+
+%token PERCENT_EXPECT "%expect"
+%token PERCENT_START "%start"
+%token PERCENT_PREC "%prec"
+%token PERCENT_DPREC "%dprec"
+%token PERCENT_MERGE "%merge"
+%token PERCENT_VERBOSE "%verbose"
%token PERCENT_ERROR_VERBOSE "%error-verbose"
-%token PERCENT_OUTPUT "%output"
+%token PERCENT_OUTPUT "%output"
%token PERCENT_FILE_PREFIX "%file-prefix"
%token PERCENT_NAME_PREFIX "%name-prefix"
-%token PERCENT_DEFINE "%define"
+%token PERCENT_DEFINE "%define"
%token PERCENT_PURE_PARSER "%pure-parser"
+%token PERCENT_GLR_PARSER "%glr-parser"
%token PERCENT_DEFINES "%defines"
%token PERCENT_YACC "%yacc"
-%token PERCENT_DEBUG "%debug"
-%token PERCENT_LOCATIONS "%locations"
-%token PERCENT_NO_LINES "%no-lines"
-%token PERCENT_SKELETON "%skeleton"
+%token PERCENT_DEBUG "%debug"
+%token PERCENT_LOCATIONS "%locations"
+%token PERCENT_NO_LINES "%no-lines"
+%token PERCENT_SKELETON "%skeleton"
%token PERCENT_TOKEN_TABLE "%token-table"
-%token TYPE
-%token EQUAL "="
-%token SEMICOLON ";"
-%token COLON ":"
-%token PIPE "|"
-%token ID "identifier"
+%token TYPE "type"
+%token EQUAL "="
+%token SEMICOLON ";"
+%token COLON ":"
+%token PIPE "|"
+%token ID "identifier"
%token PERCENT_PERCENT "%%"
-%token PROLOGUE EPILOGUE
-%token BRACED_CODE
+%token PROLOGUE "%{...%}"
+%token EPILOGUE "epilogue"
+%token BRACED_CODE "{...}"
+
%type <string> CHARACTER TYPE STRING string_content
BRACED_CODE PROLOGUE EPILOGUE epilogue.opt action
| "%no-lines" { no_lines_flag = 1; }
| "%output" "=" string_content { spec_outfile = $3; }
| "%pure-parser" { pure_parser = 1; }
+| "%glr-parser" { glr_parser = 1; }
| "%skeleton" string_content { skeleton = $2; }
| "%token-table" { token_table_flag = 1; }
| "%verbose" { report_flag = 1; }
MUSCLE_INSERT_INT ("stype_line", @2.first_line);
muscle_insert ("stype", $2);
}
+| "%destructor"
+ { current_braced_code = destructor_braced_code; }
+ BRACED_CODE symbols.1
+ {
+ symbol_list_t *list;
+ for (list = $4; list; list = list->next)
+ symbol_destructor_set (list->sym, $3, @3);
+ symbol_list_free ($4);
+ current_braced_code = action_braced_code;
+ }
+| "%printer"
+ { current_braced_code = printer_braced_code; }
+ BRACED_CODE symbols.1
+ {
+ symbol_list_t *list;
+ for (list = $4; list; list = list->next)
+ symbol_printer_set (list->sym, $3, list->location);
+ symbol_list_free ($4);
+ current_braced_code = action_braced_code;
+ }
;
symbol_declaration:
{
symbol_list_t *list;
for (list = $3; list; list = list->next)
- symbol_type_set (list->sym, list->location, $2);
- LIST_FREE (symbol_list_t, $3);
+ symbol_type_set (list->sym, $2, @2);
+ symbol_list_free ($3);
}
;
++current_prec;
for (list = $3; list; list = list->next)
{
- symbol_type_set (list->sym, list->location, current_type);
- symbol_precedence_set (list->sym, list->location, current_prec, $1);
+ symbol_type_set (list->sym, current_type, @2);
+ symbol_precedence_set (list->sym, current_prec, $1, @1);
}
- LIST_FREE (symbol_list_t, $3);
+ symbol_list_free ($3);
current_type = NULL;
}
;
}
| ID
{
- symbol_class_set ($1, current_class);
- symbol_type_set ($1, @1, current_type);
+ symbol_class_set ($1, current_class, @1);
+ symbol_type_set ($1, current_type, @1);
}
| ID INT
{
- symbol_class_set ($1, current_class);
- symbol_type_set ($1, @1, current_type);
- symbol_user_token_number_set ($1, $2);
+ symbol_class_set ($1, current_class, @1);
+ symbol_type_set ($1, current_type, @1);
+ symbol_user_token_number_set ($1, $2, @2);
}
| ID string_as_id
{
- symbol_class_set ($1, current_class);
- symbol_type_set ($1, @1, current_type);
- symbol_make_alias ($1, $2);
+ symbol_class_set ($1, current_class, @1);
+ symbol_type_set ($1, current_type, @1);
+ symbol_make_alias ($1, $2, @$);
}
| ID INT string_as_id
{
- symbol_class_set ($1, current_class);
- symbol_type_set ($1, @1, current_type);
- symbol_user_token_number_set ($1, $2);
- symbol_make_alias ($1, $3);
+ symbol_class_set ($1, current_class, @1);
+ symbol_type_set ($1, current_type, @1);
+ symbol_user_token_number_set ($1, $2, @2);
+ symbol_make_alias ($1, $3, @$);
}
;
rules_or_grammar_declaration:
rules
| grammar_declaration ";"
+ {
+ if (yacc_flag)
+ complain_at (@$, _("POSIX forbids declarations in the grammar"));
+ }
+| error ";"
+ {
+ yyerrok;
+ }
;
rules:
| rhs action
{ grammar_current_rule_action_append ($2, @2); }
| rhs "%prec" symbol
- { grammar_current_rule_prec_set ($3); }
+ { grammar_current_rule_prec_set ($3, @3); }
+| rhs "%dprec" INT
+ { grammar_current_rule_dprec_set ($3, @3); }
+| rhs "%merge" TYPE
+ { grammar_current_rule_merge_set ($3, @3); }
;
symbol:
ID { $$ = $1; }
| string_as_id { $$ = $1; }
-| CHARACTER { $$ = getsym ($1, @1); }
+| CHARACTER { $$ = symbol_get ($1, @1); }
;
action:
string_as_id:
STRING
{
- $$ = getsym ($1, @1);
- symbol_class_set ($$, token_sym);
+ $$ = symbol_get ($1, @1);
+ symbol_class_set ($$, token_sym, @1);
}
;
static void
yyprint (FILE *file,
- const location_t *loc, int type, const yystype *value)
+ int type, const yystype *value)
{
- fputs (" (", file);
- LOCATION_PRINT (file, *loc);
- fputs (")", file);
+ fputc (' ', file);
switch (type)
{
case CHARACTER:
}
void
-gram_error (gram_control_t *control ATTRIBUTE_UNUSED,
- location_t *yylloc, const char *msg)
+gram_error (location_t *yylloc, const char *msg)
{
- LOCATION_PRINT (stderr, *yylloc);
- fprintf (stderr, ": %s\n", msg);
+ complain_at (*yylloc, "%s", msg);
}
projects / bison.git / blobdiff