#include <config.h>
#include "system.h"
+#include <strverscmp.h>
+
#include "complain.h"
#include "conflicts.h"
#include "files.h"
#include "symlist.h"
#include "scan-gram.h"
#include "scan-code.h"
-#include "strverscmp.h"
#define YYLLOC_DEFAULT(Current, Rhs, N) (Current) = lloc_default (Rhs, N)
static YYLTYPE lloc_default (YYLTYPE const *, int);
static char const *char_name (char);
-static void add_param (char const *, char *, location);
+/** Add a lex-param or a parse-param.
+ *
+ * \param type \a lex_param or \a parse_param
+ * \param decl the formal argument
+ * \param loc the location in the source.
+ */
+static void add_param (char const *type, char *decl, location loc);
+
static symbol_class current_class = unknown_sym;
-static uniqstr current_type = 0;
+static uniqstr current_type = NULL;
static symbol *current_lhs;
static location current_lhs_location;
static int current_prec = 0;
-#ifdef UINT_FAST8_MAX
-# define YYTYPE_UINT8 uint_fast8_t
-#endif
-#ifdef INT_FAST8_MAX
-# define YYTYPE_INT8 int_fast8_t
-#endif
-#ifdef UINT_FAST16_MAX
-# define YYTYPE_UINT16 uint_fast16_t
-#endif
-#ifdef INT_FAST16_MAX
-# define YYTYPE_INT16 int_fast16_t
-#endif
+#define YYTYPE_INT16 int_fast16_t
+#define YYTYPE_INT8 int_fast8_t
+#define YYTYPE_UINT16 uint_fast16_t
+#define YYTYPE_UINT8 uint_fast8_t
%}
%debug
%error-verbose
%defines
%name-prefix="gram_"
+%expect 0
%initial-action
{
%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"
PERCENT_OUTPUT "%output"
PERCENT_PARSE_PARAM "%parse-param"
PERCENT_PURE_PARSER "%pure-parser"
+ PERCENT_PUSH_PARSER "%push-parser"
PERCENT_REQUIRE "%require"
PERCENT_SKELETON "%skeleton"
PERCENT_START "%start"
%type <character> CHAR
%printer { fputs (char_name ($$), stderr); } CHAR
-%type <chars> STRING string_content "{...}" PROLOGUE EPILOGUE
+/* braceless is not to be used for rule or symbol actions, as it
+ calls translate_code. */
+%type <chars> STRING "{...}" "%{...%}" EPILOGUE braceless content content.opt
%printer { fputs (quotearg_style (c_quoting_style, $$), stderr); }
- STRING string_content
-%printer { fprintf (stderr, "{\n%s\n}", $$); } "{...}" PROLOGUE EPILOGUE
+ STRING
+%printer { fprintf (stderr, "{\n%s\n}", $$); }
+ braceless content content.opt "{...}" "%{...%}" EPILOGUE
%type <uniqstr> TYPE ID ID_COLON
%printer { fprintf (stderr, "<%s>", $$); } TYPE
%printer { fprintf (stderr, "%s:", $$->tag); } id_colon
%type <assoc> precedence_declarator
-%type <list> symbols.1
+%type <list> symbols.1 generic_symlist generic_symlist_item
%%
input:
- declarations "%%" grammar epilogue.opt
+ prologue_declarations "%%" grammar epilogue.opt
;
| Declarations: before the first %%. |
`------------------------------------*/
-declarations:
+prologue_declarations:
/* Nothing */
-| declarations declaration
+| prologue_declarations prologue_declaration
;
-declaration:
+prologue_declaration:
grammar_declaration
-| PROLOGUE
- {
- prologue_augment (translate_code ($1, @1), @1, typed);
- }
-| "%after-header" "{...}"
- {
- /* Remove the '{', and replace the '}' with '\n'. */
- $2[strlen ($2) - 1] = '\n';
- prologue_augment (translate_code ($2+1, @2), @2, true);
- }
-| "%before-header" "{...}"
- {
- /* Remove the '{', and replace the '}' with '\n'. */
- $2[strlen ($2) - 1] = '\n';
- prologue_augment (translate_code ($2+1, @2), @2, false);
- }
-| "%debug" { debug_flag = true; }
-| "%define" string_content
- {
- static char one[] = "1";
- muscle_insert ($2, one);
- }
-| "%define" string_content string_content { muscle_insert ($2, $3); }
-| "%defines" { defines_flag = true; }
-| "%end-header" "{...}"
- {
- /* Remove the '{', and replace the '}' with '\n'. */
- $2[strlen ($2) - 1] = '\n';
- muscle_code_grow ("end_header", translate_code ($2+1, @2), @2);
- }
-| "%error-verbose" { error_verbose = true; }
-| "%expect" INT { expected_sr_conflicts = $2; }
-| "%expect-rr" INT { expected_rr_conflicts = $2; }
-| "%file-prefix" "=" string_content { spec_file_prefix = $3; }
+| "%{...%}" { 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); }
+| "%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; }
| "%glr-parser"
{
nondeterministic_parser = true;
{
muscle_code_grow ("initial_action", translate_symbol_action ($2, @2), @2);
}
-| "%lex-param" "{...}" { add_param ("lex_param", $2, @2); }
-| "%locations" { locations_flag = true; }
-| "%name-prefix" "=" string_content { spec_name_prefix = $3; }
-| "%no-lines" { no_lines_flag = true; }
-| "%nondeterministic-parser" { nondeterministic_parser = true; }
-| "%output" "=" string_content { spec_outfile = $3; }
-| "%parse-param" "{...}" { add_param ("parse_param", $2, @2); }
-| "%pure-parser" { pure_parser = true; }
-| "%require" string_content { version_check (&@2, $2); }
-| "%skeleton" string_content { skeleton = $2; }
-| "%start-header" "{...}"
- {
- /* Remove the '{', and replace the '}' with '\n'. */
- $2[strlen ($2) - 1] = '\n';
- muscle_code_grow ("start_header", translate_code ($2+1, @2), @2);
- }
-| "%token-table" { token_table_flag = true; }
-| "%verbose" { report_flag = report_states; }
-| "%yacc" { yacc_flag = true; }
+| "%lex-param" "{...}" { add_param ("lex_param", $2, @2); }
+| "%locations" { locations_flag = true; }
+| "%name-prefix" "=" STRING { spec_name_prefix = $3; }
+| "%no-lines" { no_lines_flag = true; }
+| "%nondeterministic-parser" { nondeterministic_parser = true; }
+| "%output" "=" STRING { spec_outfile = $3; }
+| "%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); }
+| "%token-table" { token_table_flag = true; }
+| "%verbose" { report_flag = report_states; }
+| "%yacc" { yacc_flag = true; }
| /*FIXME: Err? What is this horror doing here? */ ";"
;
{
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, action, @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, action, @2);
symbol_list_free ($3);
}
| "%default-prec"
{
char const *body = $3;
- if (typed)
+ /* Concatenate the %union bodies. If this is the first %union, make sure
+ the synchronization line appears after the opening '{' so as not to
+ confuse Doxygen. Otherwise, turn the previous %union's trailing '}'
+ into '\n', and omit the new %union's leading '{'. */
+ if (!union_seen)
+ {
+ muscle_grow ("stype", "{", "");
+ }
+ else
{
- /* 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++;
}
+ body++;
- typed = true;
+ union_seen = true;
muscle_code_grow ("stype", body, @3);
}
;
}
| "%type" TYPE symbols.1
{
+ tag_seen = true;
symbol_list *list;
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.opt:
/* Nothing. */ { current_type = NULL; }
-| TYPE { current_type = $1; }
+| 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-default" { $$ = symbol_list_default_new (@1); }
;
/* One token definition. */
TYPE
{
current_type = $1;
+ tag_seen = true;
}
| id
{
;
+/*-----------*
+ | content. |
+ *-----------*/
+
+content:
+ STRING
+| braceless
+;
+
+/* Some content or "1" by default. */
+content.opt:
+ /* Nothing. */
+ {
+ static char one[] = "1";
+ $$ = one;
+ }
+| content
+;
+
+
+braceless:
+ "{...}"
+ {
+ $1[strlen ($1) - 1] = '\n';
+ $$ = translate_code ($1 + 1, @1);
+ }
+;
+
+
/*---------------*
| Identifiers. |
*---------------*/
}
;
-/* A string used for its contents. Don't quote it. */
-string_content:
- STRING
- { $$ = $1; }
-;
-
-
epilogue.opt:
/* Nothing. */
| "%%" EPILOGUE
gram_scanner_last_string_free ();
}
+
static void
version_check (location const *loc, char const *version)
{
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