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|
/*
Copyright (C) 2008, 2009 Jiri Olsa <olsajiri@gmail.com>
This file is part of the latrace.
The latrace is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
The latrace is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the latrace (file COPYING). If not, see
<http://www.gnu.org/licenses/>.
*/
%{
#define YYERROR_VERBOSE 1
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
int yylex (void);
void yyerror(const char *m);
static struct lt_config_shared *scfg;
static int struct_alive = 0;
#define ERROR(fmt, args...) \
do { \
char ebuf[1024]; \
sprintf(ebuf, fmt, ## args); \
yyerror(ebuf); \
YYERROR; \
} while(0)
#define CHK_TYPEDEF(ret, base, new, pointer) \
do { \
switch(ret) { \
case -1: \
ERROR("unknown typedef - %s%s%s\n", base, (pointer ? "* " : " "), new); \
break; \
case 1: \
ERROR("typedef alrady defined - %s%s%s\n", base, (pointer ? "* " : " "), new); \
break; \
case 2: \
ERROR("typedef limit reached(%d) - %s%s%s\n", \
LT_ARGS_DEF_TYPEDEF_NUM, base, (pointer ? "* " : " "), new); \
break; \
}; \
} while(0)
#define GET_LIST_HEAD(head) \
do { \
if (NULL == (head = (struct lt_list_head*) malloc(sizeof(*head)))) \
ERROR("failed to allocate list head"); \
lt_init_list_head(head); \
} while(0)
%}
%token NAME FILENAME STRUCT ENUM TYPEDEF INCLUDE END POINTER
%union
{
char *s;
struct lt_arg *arg;
struct lt_enum_elem *enum_elem;
struct lt_list_head *head;
}
%type <s> NAME
%type <s> FILENAME
%type <head> STRUCT_DEF
%type <head> ENUM_DEF
%type <s> ENUM_REF
%type <enum_elem> ENUM_ELEM
%type <head> ARGS
%type <arg> DEF
%%
entry:
entry struct_def
|
entry enum_def
|
entry func_def
|
entry type_def
|
entry include_def
|
entry END
{
if (lt_args_buf_close(scfg))
return 0;
}
|
/* left blank intentionally */
/* struct definitions */
struct_def:
STRUCT NAME '{' STRUCT_DEF '}' ';'
{
switch(lt_args_add_struct(scfg, $2, $4)) {
case -1:
ERROR("failed to add struct %s\n", $2);
case 1:
ERROR("struct limit reached(%d) - %s\n", LT_ARGS_DEF_STRUCT_NUM, $2);
};
/* force creation of the new list head */
struct_alive = 0;
}
STRUCT_DEF:
STRUCT_DEF DEF ';'
{
struct lt_arg *def = $2;
struct lt_list_head *h = $1;
if (!struct_alive++)
GET_LIST_HEAD(h);
lt_list_add_tail(&def->args_list, h);
$$ = h;
}
| /* left blank intentionally,
XXX this could be done like the args_def, but user needs to be
able to create an empty structure, so thats why we play
with the global struct_alive thingie...
there could be better way probably */
{
}
/* enum definitions */
enum_def:
ENUM NAME '{' ENUM_DEF '}' ';'
{
switch(lt_args_add_enum(scfg, $2, $4)) {
case -1:
ERROR("failed to add enum %s\n", $2);
case 1:
ERROR("enum limit reached(%d) - %s\n", LT_ARGS_DEF_STRUCT_NUM, $2);
};
}
ENUM_DEF:
ENUM_DEF ',' ENUM_ELEM
{
struct lt_enum_elem *enum_elem = $3;
struct lt_list_head *h = $1;
lt_list_add_tail(&enum_elem->list, h);
$$ = h;
}
| ENUM_ELEM
{
struct lt_list_head *h;
struct lt_enum_elem *enum_elem = $1;
GET_LIST_HEAD(h);
lt_list_add_tail(&enum_elem->list, h);
$$ = h;
}
ENUM_ELEM:
NAME '=' NAME
{
if (NULL == ($$ = lt_args_get_enum(scfg, $1, $3)))
ERROR("failed to add enum '%s = %s'\n", $1, $3);
}
|
NAME
{
if (NULL == ($$ = lt_args_get_enum(scfg, $1, NULL)))
ERROR("failed to add enum '%s = undef'\n", $1);
}
type_def:
TYPEDEF NAME NAME ';'
{
int ret = lt_args_add_typedef(scfg, $2, $3, 0);
CHK_TYPEDEF(ret, $2, $3, 0);
}
|
TYPEDEF NAME POINTER NAME ';'
{
int ret = lt_args_add_typedef(scfg, $2, $4, 1);
CHK_TYPEDEF(ret, $2, $4, 1);
}
/* function definitions */
func_def:
DEF '(' ARGS ')' ';'
{
struct lt_arg *arg = $1;
if (lt_args_add_sym(scfg, arg, $3))
ERROR("failed to add symbol %s\n", arg->name);
/* force cration of the new list head */
$3 = NULL;
}
ARGS:
ARGS ',' DEF
{
struct lt_arg *def = $3;
struct lt_list_head *h = $1;
lt_list_add_tail(&def->args_list, h);
$$ = h;
}
| DEF
{
struct lt_list_head *h;
struct lt_arg *def = $1;
GET_LIST_HEAD(h);
lt_list_add_tail(&def->args_list, h);
$$ = h;
}
| NAME
{
GET_LIST_HEAD($$);
}
| /* left intentionaly blank */
{
GET_LIST_HEAD($$);
}
DEF:
NAME NAME ENUM_REF
{
struct lt_arg *arg;
if (NULL == (arg = lt_args_getarg(scfg, $1, $2, 0, 1, $3)))
ERROR("unknown argument type - %s\n", $1);
$$ = arg;
}
|
NAME POINTER NAME ENUM_REF
{
struct lt_arg *arg;
if (NULL == (arg = lt_args_getarg(scfg, $1, $3, 1, 1, $4)))
ERROR("unknown argument type - %s\n", $1);
$$ = arg;
}
|
STRUCT NAME NAME
{
struct lt_arg *arg;
if (NULL == (arg = lt_args_getarg(scfg, $2, $3, 0, 1, NULL)))
ERROR("unknown argument type - %s\n", $2);
$$ = arg;
}
|
STRUCT NAME POINTER NAME ENUM_REF
{
struct lt_arg *arg;
if (NULL == (arg = lt_args_getarg(scfg, $2, $4, 1, 1, $5)))
ERROR("unknown argument type - %s\n", $2);
$$ = arg;
}
ENUM_REF:
'=' NAME
{
$$ = $2;
}
|
{
$$ = NULL;
}
/* include definitions */
include_def: INCLUDE '"' FILENAME '"'
{
if (lt_args_buf_open(scfg, $3))
ERROR("failed to process include");
}
%%
int lt_args_parse_init(struct lt_config_shared *cfg)
{
scfg = cfg;
return 0;
}
|
