path: root/plugins/epan/mate/mate_grammar.lemon

%include {

/* mate_grammar.lemon
 * MATE's configuration language grammar
 *
 * Copyright 2005, Luis E. Garcia Ontanon <luis@ontanon.org>
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

/*
 * XXX - there's a Lemon bug where this grammar produces a parser that
 * fails assertions; to work around it, we disable assert() failures.
 */
#ifndef NDEBUG
#define NDEBUG
#endif
#include "config.h"

#include <errno.h>

#include "mate.h"
#include "mate_grammar.h"
#include <wsutil/file_util.h>
#include <wsutil/str_util.h>

#define DUMMY void*

typedef struct _extraction {
	char* as;
	header_field_info* hfi;
	struct _extraction* next;
	struct _extraction* last;
} extraction_t;

typedef struct _pdu_criteria_t {
	AVPL* criterium_avpl;
	avpl_match_mode criterium_match_mode;
	accept_mode_t criterium_accept_mode;
} pdu_criteria_t;

typedef struct _gop_options {
	gop_tree_mode_t pdu_tree_mode;
	bool drop_unassigned;
	bool show_times;
	double expiration;
	double idle_timeout;
	double lifetime;
	AVPL* start;
	AVPL* stop;
	AVPL* extras;
} gop_options_t;

typedef struct _gog_statements {
	double expiration;
	gop_tree_mode_t gop_tree_mode;
	GPtrArray* transform_list;
	AVPL* extras;
	LoAL* current_gogkeys;
} gog_statement_t;

typedef struct _transf_match_t {
	avpl_match_mode match_mode;
	AVPL* avpl;
} transf_match_t;

typedef struct _transf_action_t {
	avpl_replace_mode replace_mode;
	AVPL* avpl;
} transf_action_t;

static void configuration_error(mate_config* mc, const char* fmt, ...) {
	static char error_buffer[256];
	const char* incl;
	int i;
	mate_config_frame* current_frame;
	va_list list;

	va_start( list, fmt );
	vsnprintf(error_buffer,sizeof(error_buffer),fmt,list);
	va_end( list );

	i = (int) mc->config_stack->len;

	while (i--) {

		if (i>0) {
			incl = "\n   included from: ";
		} else {
			incl = " ";
		}

		current_frame = (mate_config_frame *)g_ptr_array_index(mc->config_stack,(unsigned)i);

		g_string_append_printf(mc->config_error,"%s%s at line %u",incl, current_frame->filename, current_frame->linenum);
	}

	g_string_append_printf(mc->config_error,": %s\n",error_buffer);

	THROW(MateConfigError);

}

static AVPL_Transf* new_transform_elem(AVPL* match, AVPL* replace, avpl_match_mode match_mode, avpl_replace_mode replace_mode) {
	 AVPL_Transf* t = (AVPL_Transf *)g_malloc(sizeof(AVPL_Transf));

	 t->name = NULL;
	 t->match = match;
	 t->replace = replace;
	 t->match_mode = match_mode;
	 t->replace_mode = replace_mode;

	 t->map = NULL;
	 t->next = NULL;

	 return t;
}

static char* recolonize(mate_config* mc, char* s) {
	GString* str = g_string_new("");
	char** vec;
	char* r;
	unsigned i,v;
	char c;

	vec = g_strsplit(s,":",0);

	for (i = 0; vec[i]; i++) {
		ascii_strdown_inplace(vec[i]);

		v = 0;
		switch ( strlen(vec[i]) ) {
		 case 2:
			c = vec[i][1];
			vec[i][1] = vec[i][0];
			vec[i][0] = c;
			if (vec[i][0] >= '0' && vec[i][0] <= '9') {
				v += (vec[i][1] - '0' )*16;
			} else {
				v += (vec[i][1] - 'a' + 10)*16;
			}
		/* FALL THROUGH */
		 case 1:
			if (vec[i][0] >= '0' && vec[i][0] <= '9') {
				v += (vec[i][0] - '0' );
			} else {
				v += (vec[i][0] - 'a' + 10);
			}
		 case 0:
			break;
		 default:
			configuration_error(mc,"bad token %s",s);
		}

		g_string_append_printf(str,":%.2X",v);
	}

	g_strfreev(vec);

	g_string_erase(str,0,1);

	r = str->str;

	g_string_free(str,FALSE);

	return r;
}

DIAG_OFF_LEMON()
} /* end of %include */

%code {
DIAG_ON_LEMON()
}

%name MateParser

%token_prefix TOKEN_

%token_type { char* }
%token_destructor {
	(void) mc; /* Mark unused, similar to Q_UNUSED */
	g_free($$);
}

%extra_argument { mate_config* mc }

%syntax_error {
	if(yyminor == NULL) {
		configuration_error(mc,"Syntax error detected before end of file.");
	} else {
		configuration_error(mc,"Syntax error at or before \"%s\"",yyminor);
	}
}

%parse_failure {
	configuration_error(mc,"Parse error");
}

%type   transform_decl  { AVPL_Transf* }
%type   transform_body { AVPL_Transf* }
%type   transform_statements { AVPL_Transf* }
%type   transform_statement { AVPL_Transf* }
%type   transform_match { transf_match_t* }
%type   transform_action { transf_action_t* }
%type   match_mode { avpl_match_mode }
%type   action_mode { avpl_replace_mode }

%type gop_name { char* }
%type time_value { double }
%type pdu_name { char* }
%type gop_tree_mode { gop_tree_mode_t }
%type true_false { bool }

%type criteria_statement { pdu_criteria_t* }
%type accept_mode { accept_mode_t }
%type pdu_drop_unassigned_statement { bool }
%type discard_pdu_data_statement { bool }
%type last_extracted_statement { bool }

%type extraction_statement {extraction_t*}
%type extraction_statements {extraction_t*}

%type gop_options { gop_options_t* }

%type gop_start_statement { AVPL* }
%type gop_stop_statement { AVPL* }
%type extra_statement { AVPL* }
%type gop_drop_unassigned_statement { bool }
%type show_goptree_statement { gop_tree_mode_t }
%type show_times_statement { bool }
%type gop_expiration_statement { double }
%type idle_timeout_statement { double }
%type lifetime_statement { double }

%type gog_statements { gog_statement_t* }
%type gog_expiration_statement { double }
%type gog_goptree_statement { gop_tree_mode_t }
%type gog_key_statements { LoAL* }
%type gog_key_statement { AVPL* }
%type transform_list_statement { GPtrArray* }
%type transform { AVPL_Transf* }
%type gop_tree_type { gop_tree_mode_t }

%type payload_statement { GPtrArray* }
%type proto_stack { GPtrArray*  }
%type field { header_field_info* }
%type transform_list { GPtrArray* }
%type avpl { AVPL* }
%type avps { AVPL* }
%type avp { AVP* }
%type value { char* }
%type avp_oneoff { char* }


mate_config ::= decls.

decls ::= decls decl.
decls ::= .

decl ::= pdu_decl.
decl ::= gop_decl.
decl ::= gog_decl.
decl ::= transform_decl.
decl ::= defaults_decl.
decl ::= debug_decl.
decl ::= DONE_KW SEMICOLON.

/************* DEBUG
*/

debug_decl ::= DEBUG_KW OPEN_BRACE dbgfile_default dbglevel_default pdu_dbglevel_default gop_dbglevel_default gog_dbglevel_default CLOSE_BRACE SEMICOLON.

dbgfile_default ::= FILENAME_KW QUOTED(Filename) SEMICOLON. { mc->dbg_facility = ws_fopen(Filename,"w"); if (mc->dbg_facility == NULL) report_open_failure(Filename,errno,true); }
dbgfile_default ::= FILENAME_KW NAME(Filename) SEMICOLON. { mc->dbg_facility = ws_fopen(Filename,"w"); if (mc->dbg_facility == NULL) report_open_failure(Filename,errno,true);  }
dbgfile_default ::= .

dbglevel_default ::= LEVEL_KW INTEGER(LevelString) SEMICOLON. { mc->dbg_lvl = (int) strtol(LevelString,NULL,10); }
dbglevel_default ::= .

pdu_dbglevel_default ::= PDU_KW LEVEL_KW INTEGER(LevelString) SEMICOLON. { mc->dbg_pdu_lvl = (int) strtol(LevelString,NULL,10); }
pdu_dbglevel_default ::= .

gop_dbglevel_default ::= GOP_KW LEVEL_KW INTEGER(LevelString) SEMICOLON. { mc->dbg_gop_lvl = (int) strtol(LevelString,NULL,10); }
gop_dbglevel_default ::= .

gog_dbglevel_default ::= GOG_KW LEVEL_KW INTEGER(LevelString) SEMICOLON. { mc->dbg_gog_lvl = (int) strtol(LevelString,NULL,10); }
gog_dbglevel_default ::= .


/************* DEFAULTS
*/

defaults_decl ::= DEFAULT_KW OPEN_BRACE pdu_defaults gop_defaults gog_defaults CLOSE_BRACE SEMICOLON.

pdu_defaults ::= PDU_KW OPEN_BRACE pdu_last_extracted_default pdu_drop_unassigned_default pdu_discard_default CLOSE_BRACE SEMICOLON.
pdu_defaults ::= .

pdu_last_extracted_default ::= LAST_EXTRACTED_KW true_false(Flag) SEMICOLON. { mc->defaults.pdu.last_extracted = Flag; }
pdu_last_extracted_default ::= .

pdu_drop_unassigned_default ::= DROP_UNASSIGNED_KW true_false(Flag) SEMICOLON. { mc->defaults.pdu.drop_unassigned = Flag; }
pdu_drop_unassigned_default ::= .

pdu_discard_default ::= DISCARD_PDU_DATA_KW true_false(Flag) SEMICOLON. { mc->defaults.pdu.discard = Flag; }
pdu_discard_default ::= .

gop_defaults ::= GOP_KW OPEN_BRACE gop_expiration_default gop_idle_timeout_default gop_lifetime_default gop_drop_unassigned_default gop_tree_mode_default gop_show_times_default  CLOSE_BRACE SEMICOLON.
gop_defaults ::= .

gop_expiration_default ::= EXPIRATION_KW time_value(B) SEMICOLON. { mc->defaults.gop.expiration = B; }
gop_expiration_default ::= .

gop_idle_timeout_default ::= IDLE_TIMEOUT_KW time_value(B) SEMICOLON. { mc->defaults.gop.idle_timeout = B; }
gop_idle_timeout_default ::= .

gop_lifetime_default ::= LIFETIME_KW time_value(B) SEMICOLON. { mc->defaults.gop.lifetime = B; }
gop_lifetime_default ::= .

gop_drop_unassigned_default ::= DROP_UNASSIGNED_KW true_false(B) SEMICOLON. { mc->defaults.gop.drop_unassigned = B; }
gop_drop_unassigned_default ::= .

gop_tree_mode_default ::= SHOW_TREE_KW gop_tree_mode(B) SEMICOLON. { mc->defaults.gop.pdu_tree_mode = (gop_pdu_tree_t)B; }
gop_tree_mode_default ::= .

gop_show_times_default ::= SHOW_TIMES_KW true_false(B) SEMICOLON. { mc->defaults.gop.show_times = B; }
gop_show_times_default ::= .

gog_defaults ::= GOG_KW OPEN_BRACE gog_expiration_default gop_tree_mode_default gog_goptree_default gog_show_times_default CLOSE_BRACE SEMICOLON.
gog_defaults ::= .

gog_expiration_default ::= EXPIRATION_KW time_value(B) SEMICOLON. { mc->defaults.gop.expiration = B; }
gog_expiration_default ::= .

gog_goptree_default ::= GOP_TREE_KW gop_tree_type(B) SEMICOLON. { mc->defaults.gog.gop_tree_mode = B; }
gog_goptree_default ::= .

gog_show_times_default ::= SHOW_TIMES_KW true_false(B) SEMICOLON. { mc->defaults.gog.show_times = B; }
gog_show_times_default ::= .


/******************************************* TRANSFORM
*/

transform_decl(A) ::= TRANSFORM_KW NAME(B) transform_body(C) SEMICOLON. {
	AVPL_Transf* c;

	if ( g_hash_table_lookup(mc->transfs,B) ) {
		configuration_error(mc,"A transformation called '%s' exists already",B);
	}

	for ( c = C; c; c = c->next )
		c->name = g_strdup(B);

	g_hash_table_insert(mc->transfs,C->name,C);

	A = NULL;
}

transform_body(A) ::= OPEN_BRACE transform_statements(B) CLOSE_BRACE. { A = B; }

transform_statements(A) ::= transform_statements(C) transform_statement(B). {
	AVPL_Transf* c;

	for ( c = C; c->next; c = c->next ) ;
	c->next = B;
	A = C;
}

transform_statements(A) ::= transform_statement(B). { A = B; }

transform_statement(A) ::= transform_match(Match) transform_action(Action) SEMICOLON. {
	A = new_transform_elem(Match->avpl,Action->avpl,Match->match_mode,Action->replace_mode);
}

transform_match(A) ::= MATCH_KW  match_mode(Mode) avpl(Avpl). {
	A = (transf_match_t *)g_malloc(sizeof(transf_match_t));
	A->match_mode = Mode;
	A->avpl = Avpl;
}

transform_match(A) ::= . {
	A = (transf_match_t *)g_malloc(sizeof(transf_match_t));
	A->match_mode = AVPL_STRICT;
	A->avpl = new_avpl("");

}

transform_action(A) ::= . {
	A = (transf_action_t *)g_malloc(sizeof(transf_action_t));
	A->replace_mode = AVPL_INSERT;
	A->avpl = new_avpl("");
}
transform_action(A) ::= action_mode(Mode) avpl(Avpl). {
	A = (transf_action_t *)g_malloc(sizeof(transf_action_t));
	A->replace_mode = Mode;
	A->avpl = Avpl;
}

match_mode(A) ::=  . { A = AVPL_STRICT; }
match_mode(A) ::=  STRICT_KW. { A = AVPL_STRICT; }
match_mode(A) ::=  EVERY_KW. { A = AVPL_EVERY; }
match_mode(A) ::=  LOOSE_KW. { A = AVPL_LOOSE; }

action_mode(A) ::= REPLACE_KW. { A = AVPL_REPLACE; }
action_mode(A) ::= INSERT_KW. { A = AVPL_INSERT; }
action_mode(A) ::= . { A = AVPL_INSERT; }

/******************************************* PDU
*/

pdu_decl ::=
	PDU_KW NAME(Name) PROTO_KW field(Field) TRANSPORT_KW proto_stack(Stack)
		OPEN_BRACE
			payload_statement(Payload)
			extraction_statements(Extraction)
			transform_list_statement(Transform)
			criteria_statement(Criteria)
			pdu_drop_unassigned_statement(DropUnassigned)
			discard_pdu_data_statement(DistcardPduData)
			last_extracted_statement(LastExtracted)
		CLOSE_BRACE SEMICOLON.
{

	mate_cfg_pdu* cfg  = new_pducfg(mc, Name);
	extraction_t *extraction, *next_extraction;
	GPtrArray* transport_stack = g_ptr_array_new();
	int i;

	if (! cfg ) configuration_error(mc,"could not create Pdu %s.",Name);

	cfg->hfid_proto = Field->id;

	cfg->last_extracted = LastExtracted;
	cfg->discard = DistcardPduData;
	cfg->drop_unassigned = DropUnassigned;

	/*
	 * Add this protocol to our table of wanted hfids.
	 */
	mc->wanted_hfids = g_array_append_val(mc->wanted_hfids, Field->id);

	/* flip the transport_stack */
	for (i = Stack->len - 1; Stack->len; i--) {
		g_ptr_array_add(transport_stack,g_ptr_array_remove_index(Stack,i));
	}

	g_ptr_array_free(Stack, true);

	cfg->transport_ranges = transport_stack;
	cfg->payload_ranges = Payload;

	if (Criteria) {
		cfg->criterium = Criteria->criterium_avpl;
		cfg->criterium_match_mode = Criteria->criterium_match_mode;
		cfg->criterium_accept_mode = Criteria->criterium_accept_mode;
	}

	cfg->transforms = Transform;

	for (extraction = Extraction; extraction; extraction = next_extraction) {
		next_extraction = extraction->next;

		if ( ! add_hfid(mc, extraction->hfi, extraction->as, cfg->hfids_attr) ) {
			configuration_error(mc,"MATE: failed to create extraction rule '%s'",extraction->as);
		}

		g_free(extraction);
	}
}

payload_statement(A) ::= . { A = NULL; }
payload_statement(A) ::= PAYLOAD_KW proto_stack(B) SEMICOLON. { A = B; }

criteria_statement(A) ::= . { A = NULL; }
criteria_statement(A) ::= CRITERIA_KW accept_mode(B) match_mode(C) avpl(D) SEMICOLON. {
	A = g_new(pdu_criteria_t, 1);
	A->criterium_avpl = D;
	A->criterium_match_mode = C;
	A->criterium_accept_mode = B;
}

accept_mode(A) ::= . { A = ACCEPT_MODE; }
accept_mode(A) ::= ACCEPT_KW. { A = ACCEPT_MODE; }
accept_mode(A) ::= REJECT_KW. { A = REJECT_MODE; }

extraction_statements(A) ::= extraction_statements(B) extraction_statement(C). { A = B; A->last = A->last->next = C; }
extraction_statements(A) ::= extraction_statement(B). { A = B; A->last = A; }

extraction_statement(A) ::= EXTRACT_KW NAME(NAME) FROM_KW field(FIELD) SEMICOLON. {
	A = g_new(extraction_t, 1);
	A->as = NAME;
	A->hfi = FIELD;
	A->next = A->last = NULL;
}


pdu_drop_unassigned_statement(A) ::= DROP_UNASSIGNED_KW true_false(B) SEMICOLON. { A = B; }
pdu_drop_unassigned_statement(A) ::= . { A =  mc->defaults.pdu.drop_unassigned; }

discard_pdu_data_statement(A) ::=  DISCARD_PDU_DATA_KW true_false(B) SEMICOLON. { A = B; }
discard_pdu_data_statement(A) ::=  . { A =  mc->defaults.pdu.discard; }

last_extracted_statement(A) ::= LAST_PDU_KW true_false(B) SEMICOLON. { A = B; }
last_extracted_statement(A) ::= . { A = mc->defaults.pdu.last_extracted; }

proto_stack(A) ::= proto_stack(B) SLASH field(C). {
	int* hfidp = g_new(int, 1);

	*hfidp = C->id;
	g_ptr_array_add(B,hfidp);
	A = B;
}

proto_stack(A) ::= field(B). {
	int* hfidp = g_new(int, 1);
	*hfidp = B->id;

	A = g_ptr_array_new();
	g_ptr_array_add(A,hfidp);
}

field(A) ::= NAME(B). {
	A = proto_registrar_get_byname(B);
	if (A == NULL) {
		configuration_error(mc,"\nUnknown Proto/Transport/field: %s\n",B);
	};
}

/******************************************* GOP
*/

gop_decl(A) ::= GOP_KW NAME(Name) ON_KW pdu_name(PduName) MATCH_KW avpl(Key) OPEN_BRACE
		gop_start_statement(Start)
		gop_stop_statement(Stop)
		extra_statement(Extra)
		transform_list_statement(Transform)
		gop_expiration_statement(Expiration)
		idle_timeout_statement(IdleTimeout)
		lifetime_statement(Lifetime)
		gop_drop_unassigned_statement(DropUnassigned)
		show_goptree_statement(TreeMode)
		show_times_statement(ShowTimes)
	CLOSE_BRACE SEMICOLON. {
		mate_cfg_gop* cfg;

	if (g_hash_table_lookup(mc->gopcfgs,Name)) configuration_error(mc,"A Gop Named '%s' exists already.",Name);
	if (g_hash_table_lookup(mc->gops_by_pduname,PduName) ) configuration_error(mc,"Gop for Pdu '%s' exists already",PduName);

	cfg = new_gopcfg(mc, Name);
	g_hash_table_insert(mc->gops_by_pduname,PduName,cfg);
	g_hash_table_insert(mc->gopcfgs,cfg->name,cfg);

	cfg->on_pdu = PduName;
	cfg->key = Key;
	cfg->drop_unassigned = DropUnassigned;
	cfg->show_times = ShowTimes;
	cfg->pdu_tree_mode = (gop_pdu_tree_t)TreeMode;
	cfg->expiration = Expiration;
	cfg->idle_timeout = IdleTimeout;
	cfg->lifetime = Lifetime;
	cfg->start = Start;
	cfg->stop = Stop;
	cfg->transforms = Transform;

	merge_avpl(cfg->extra,Extra,true);
	delete_avpl(Extra,true);
}

gop_drop_unassigned_statement(A) ::= DROP_UNASSIGNED_KW true_false(B) SEMICOLON. { A = B; }
gop_drop_unassigned_statement(A) ::= . { A =  mc->defaults.gop.drop_unassigned; }

gop_start_statement(A) ::= START_KW avpl(B) SEMICOLON. { A = B; }
gop_start_statement(A) ::= . { A = NULL; }

gop_stop_statement(A) ::= STOP_KW avpl(B) SEMICOLON. { A = B; }
gop_stop_statement(A) ::= . { A = NULL; }

show_goptree_statement(A) ::= SHOW_TREE_KW gop_tree_mode(B) SEMICOLON. { A = B; }
show_goptree_statement(A) ::= . { A = (gop_tree_mode_t)mc->defaults.gop.pdu_tree_mode; }

show_times_statement(A) ::= SHOW_TIMES_KW true_false(B) SEMICOLON. { A = B; }
show_times_statement(A) ::= . { A = mc->defaults.gop.show_times; }

gop_expiration_statement(A) ::= EXPIRATION_KW time_value(B) SEMICOLON. { A = B; }
gop_expiration_statement(A) ::= . { A = mc->defaults.gop.lifetime; }

idle_timeout_statement(A) ::= IDLE_TIMEOUT_KW time_value(B) SEMICOLON. { A = B; }
idle_timeout_statement(A) ::= . { A = mc->defaults.gop.lifetime; }

lifetime_statement(A) ::= LIFETIME_KW time_value(B) SEMICOLON. { A = B; }
lifetime_statement(A) ::= . { A = mc->defaults.gop.lifetime; }

gop_tree_mode(A) ::= NO_TREE_KW.	{ A = (gop_tree_mode_t)GOP_NO_TREE; }
gop_tree_mode(A) ::= PDU_TREE_KW.	{ A = (gop_tree_mode_t)GOP_PDU_TREE; }
gop_tree_mode(A) ::= FRAME_TREE_KW.	{ A = (gop_tree_mode_t)GOP_FRAME_TREE; }
gop_tree_mode(A) ::= BASIC_TREE_KW.	{ A = (gop_tree_mode_t)GOP_BASIC_PDU_TREE; }

true_false(A) ::= TRUE_KW. { A = true; }
true_false(A) ::= FALSE_KW. { A = false; }

pdu_name(A) ::= NAME(B). {
	mate_cfg_pdu* c;
	if (( c =  (mate_cfg_pdu *)g_hash_table_lookup(mc->pducfgs,B) )) {
		A = c->name;
	} else {
		configuration_error(mc,"No such Pdu: '%s'",B);
	}
}


time_value(A) ::= FLOATING(B). {
	A = g_ascii_strtod(B,NULL);
}

time_value(A) ::= INTEGER(B). {
	A = g_ascii_strtod(B,NULL);
}

/************* GOG
*/

gog_decl ::= GOG_KW NAME(Name) OPEN_BRACE
	gog_key_statements(Keys)
	extra_statement(Extra)
	transform_list_statement(Transforms)
	gog_expiration_statement(Expiration)
	gog_goptree_statement(Tree)
	show_times_statement(ShowTimes)
	CLOSE_BRACE SEMICOLON. {
		mate_cfg_gog* cfg = NULL;

		if ( g_hash_table_lookup(mc->gogcfgs,Name) ) {
			configuration_error(mc,"Gog '%s' exists already ",Name);
		}

		cfg = new_gogcfg(mc, Name);

		cfg->expiration = Expiration;
		cfg->gop_tree_mode = Tree;
		cfg->transforms = Transforms;
		cfg->keys = Keys;
		cfg->show_times = ShowTimes;

		merge_avpl(cfg->extra,Extra,true);
		delete_avpl(Extra,true);
}

gog_goptree_statement(A) ::= GOP_TREE_KW gop_tree_type(B) SEMICOLON. { A = B; }
gog_goptree_statement(A) ::= . { A = mc->defaults.gog.gop_tree_mode; }

gog_expiration_statement(A) ::= EXPIRATION_KW time_value(B) SEMICOLON. { A = B; }
gog_expiration_statement(A) ::= . { A = mc->defaults.gog.expiration; }

gop_tree_type(A) ::= NULL_TREE_KW. { A = GOP_NULL_TREE; }
gop_tree_type(A) ::= FULL_TREE_KW. { A = GOP_FULL_TREE; }
gop_tree_type(A) ::= BASIC_TREE_KW. { A = GOP_BASIC_TREE; }

gog_key_statements(A) ::= gog_key_statements(B) gog_key_statement(C). {
	loal_append(B,C);
	A = B;
}

gog_key_statements(A) ::= gog_key_statement(B). {
	A = new_loal("");
	loal_append(A,B);
}


gog_key_statement(A) ::= MEMBER_KW gop_name(B) avpl(C) SEMICOLON. {
	rename_avpl(C,B);
	A = C;
}

gop_name(A) ::= NAME(B). {
	mate_cfg_gop* c;
	if (( c = (mate_cfg_gop *)g_hash_table_lookup(mc->gopcfgs,B) )) {
		A = c->name;
	} else {
		configuration_error(mc,"No Gop called '%s' has been already declared",B);
	}
}
/******************************************** GENERAL
*/


extra_statement(A) ::= EXTRA_KW avpl(B) SEMICOLON. { A = B; }
extra_statement(A) ::= . { A = new_avpl(""); }

transform_list_statement(A) ::= TRANSFORM_KW transform_list(B) SEMICOLON. { A = B; }
transform_list_statement(A) ::= . { A = g_ptr_array_new(); }

transform_list(A) ::= transform_list(B) COMMA transform(C). {
	A = B;
	g_ptr_array_add(B,C);
}

transform_list(A) ::= transform(B). {
	A = g_ptr_array_new();
	g_ptr_array_add(A,B);
}

transform(A) ::= NAME(B). {
	AVPL_Transf* t;

	if (( t = (AVPL_Transf *)g_hash_table_lookup(mc->transfs,B) )) {
		A = t;
	} else {
		configuration_error(mc,"There's no such Transformation: %s",B);
	}
}

avpl(A) ::= OPEN_PARENS avps(B) CLOSE_PARENS. { A = B; }
avpl(A) ::= OPEN_PARENS CLOSE_PARENS. { A = new_avpl(""); }

avps(A) ::= avps(B) COMMA avp(C). { A = B; if ( ! insert_avp(B,C) ) delete_avp(C); }
avps(A) ::= avp(B). { A = new_avpl(""); if ( ! insert_avp(A,B) ) delete_avp(B); }

avp(A) ::= NAME(B) AVP_OPERATOR(C) value(D). { A = new_avp(B,D,*C); }
avp(A) ::= NAME(B). { A = new_avp(B,"",'?'); }
avp(A) ::= NAME(B) OPEN_BRACE avp_oneoff(C) CLOSE_BRACE. { A = new_avp(B,C,'|'); }

avp_oneoff(A) ::= avp_oneoff(B) PIPE value(C). { A = ws_strdup_printf("%s|%s",B,C); }
avp_oneoff(A) ::= value(B). { A = g_strdup(B); }

value(A) ::= QUOTED(B). { A = g_strdup(B); }
value(A) ::= NAME(B). { A = g_strdup(B); }
value(A) ::= FLOATING(B). { A = g_strdup(B); }
value(A) ::= INTEGER(B). { A = g_strdup(B); }
value(A) ::= DOTED_IP(B). { A = g_strdup(B); }
value(A) ::= COLONIZED(B). { A = recolonize(mc,B); }