/
R2.xs
2418 lines (2263 loc) · 57.5 KB
/
R2.xs
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/*
* Copyright 2012 Jeffrey Kegler
* This file is part of Marpa::R2. Marpa::R2 is free software: you can
* redistribute it and/or modify it under the terms of the GNU Lesser
* General Public License as published by the Free Software Foundation,
* either version 3 of the License, or (at your option) any later version.
*
* Marpa::R2 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser
* General Public License along with Marpa::R2. If not, see
* http://www.gnu.org/licenses/.
*/
#define PERL_NO_GET_CONTEXT
#include <EXTERN.h>
#include <perl.h>
#include <XSUB.h>
#include "config.h"
#include "marpa.h"
typedef struct marpa_g Grammar;
typedef struct {
Marpa_Grammar g;
char *message_buffer;
} G_Wrapper;
typedef struct marpa_r Recce;
typedef struct {
Marpa_Recce r;
char *message_buffer;
Marpa_Symbol_ID* terminals_buffer;
} R_Wrapper;
typedef struct marpa_b Bocage;
typedef struct {
Marpa_Bocage b;
char *message_buffer;
} B_Wrapper;
typedef struct marpa_o Order;
typedef struct {
Marpa_Order o;
char *message_buffer;
} O_Wrapper;
typedef struct marpa_t Tree;
typedef struct {
Marpa_Tree t;
char *message_buffer;
} T_Wrapper;
typedef struct marpa_v Value;
typedef struct {
Marpa_Value v;
char *message_buffer;
} V_Wrapper;
static const char grammar_c_class_name[] = "Marpa::R2::Thin::G";
static const char recce_c_class_name[] = "Marpa::R2::Thin::R";
static const char bocage_c_class_name[] = "Marpa::R2::Thin::B";
static const char order_c_class_name[] = "Marpa::R2::Thin::O";
static const char tree_c_class_name[] = "Marpa::R2::Thin::T";
static const char value_c_class_name[] = "Marpa::R2::Thin::V";
#include "codes.h"
#include "codes.c"
static const char *
event_type_to_string (Marpa_Event_Type event_code)
{
const char *event_name = NULL;
if (event_code >= 0 && event_code < MARPA_ERROR_COUNT) {
event_name = marpa_event_description[event_code].name;
}
return event_name;
}
static const char *
step_type_to_string (Marpa_Step_Type step_type)
{
const char *step_type_name = NULL;
if (step_type >= 0 && step_type < MARPA_STEP_COUNT) {
step_type_name = marpa_step_type_description[step_type].name;
}
return step_type_name;
}
/* This routine is for the handling exceptions
from libmarpa. It is used when in the general
cases, for those exception which are not singled
out for special handling by the XS logic.
It returns a buffer which must be Safefree()'d.
*/
static char *
libmarpa_exception (int error_code, const char *error_string)
{
dTHX;
const char *suggested_description = NULL;
/*
* error_name should always be set when suggested_description is,
* so this initialization should never be used.
*/
const char *error_name = "not libmarpa error";
const char *output_string;
switch (error_code)
{
case MARPA_ERR_DEVELOPMENT:
output_string = form ("(development) %s",
(error_string ? error_string : "(null)"));
goto COPY_STRING;
case MARPA_ERR_INTERNAL:
output_string = form ("Internal error (%s)",
(error_string ? error_string : "(null)"));
goto COPY_STRING;
}
if (error_code >= 0 && error_code < MARPA_ERROR_COUNT) {
suggested_description = marpa_error_description[error_code].suggested;
error_name = marpa_error_description[error_code].name;
}
if (!suggested_description)
{
if (error_string)
{
output_string = form ("libmarpa error %d %s: %s",
error_code, error_name, error_string);
goto COPY_STRING;
}
output_string = form ("libmarpa error %d %s", error_code, error_name);
goto COPY_STRING;
}
if (error_string)
{
output_string = form ("%s%s%s", suggested_description, "; ", error_string);
goto COPY_STRING;
}
output_string = suggested_description;
COPY_STRING:
return savepv(output_string);
}
/* Return value must be Safefree()'d */
static const char *
xs_g_error (G_Wrapper * g_wrapper)
{
const char *error_string;
Marpa_Grammar g = g_wrapper->g;
const int error_code = marpa_g_error (g, &error_string);
char *buffer = g_wrapper->message_buffer;
if (buffer) Safefree(buffer);
g_wrapper->message_buffer = buffer =
libmarpa_exception (error_code, error_string);
return buffer;
}
/* Return value must be Safefree()'d */
static const char *
xs_r_error (R_Wrapper * r_wrapper)
{
const char *error_string;
struct marpa_r *r = r_wrapper->r;
const int error_code = marpa_r_error (r, &error_string);
char *buffer = r_wrapper->message_buffer;
if (buffer) Safefree(buffer);
r_wrapper->message_buffer = buffer =
libmarpa_exception (error_code, error_string);
return buffer;
}
/* Return value must be Safefree()'d */
static const char *
xs_b_error (B_Wrapper * b_wrapper)
{
const char *error_string;
Marpa_Bocage b = b_wrapper->b;
Marpa_Grammar g = marpa_b_g(b);
const int error_code = marpa_g_error (g, &error_string);
char *buffer = b_wrapper->message_buffer;
if (buffer) Safefree(buffer);
b_wrapper->message_buffer = buffer =
libmarpa_exception (error_code, error_string);
return buffer;
}
/* Return value must be Safefree()'d */
static const char *
xs_o_error (O_Wrapper * o_wrapper)
{
const char *error_string;
Marpa_Order o = o_wrapper->o;
Marpa_Grammar g = marpa_o_g(o);
const int error_code = marpa_g_error (g, &error_string);
char *buffer = o_wrapper->message_buffer;
if (buffer) Safefree(buffer);
o_wrapper->message_buffer = buffer =
libmarpa_exception (error_code, error_string);
return buffer;
}
/* Return value must be Safefree()'d */
static const char *
xs_t_error (T_Wrapper * t_wrapper)
{
const char *error_string;
Marpa_Tree t = t_wrapper->t;
Marpa_Grammar g = marpa_t_g(t);
const int error_code = marpa_g_error (g, &error_string);
char *buffer = t_wrapper->message_buffer;
if (buffer) Safefree(buffer);
t_wrapper->message_buffer = buffer =
libmarpa_exception (error_code, error_string);
return buffer;
}
/* Return value must be Safefree()'d */
static const char *
xs_v_error (V_Wrapper * v_wrapper)
{
const char *error_string;
Marpa_Value v = v_wrapper->v;
Marpa_Grammar g = marpa_v_g(v);
const int error_code = marpa_g_error (g, &error_string);
char *buffer = v_wrapper->message_buffer;
if (buffer) Safefree(buffer);
v_wrapper->message_buffer = buffer =
libmarpa_exception (error_code, error_string);
return buffer;
}
/* Wrapper to use vwarn with libmarpa */
static int marpa_r2_warn(const char* format, ...)
{
dTHX;
va_list args;
va_start (args, format);
vwarn (format, &args);
va_end (args);
return 1;
}
MODULE = Marpa::R2 PACKAGE = Marpa::R2::Thin
PROTOTYPES: DISABLE
void
debug_level_set(level)
int level;
PPCODE:
{
marpa_debug_level_set(level);
XSRETURN_YES;
}
void
error_names()
PPCODE:
{
int error_code;
for (error_code = 0; error_code < MARPA_ERROR_COUNT; error_code++)
{
const char *error_name = marpa_error_description[error_code].name;
XPUSHs (sv_2mortal (newSVpv (error_name, 0)));
}
}
MODULE = Marpa::R2 PACKAGE = Marpa::R2::Thin::G
G_Wrapper *
new( class )
char * class;
PPCODE:
{
Marpa_Grammar g;
SV *sv;
G_Wrapper *g_wrapper;
Marpa_Error_Code version_error =
marpa_check_version(MARPA_MAJOR_VERSION, MARPA_MINOR_VERSION, MARPA_MICRO_VERSION);
if (version_error != MARPA_ERR_NONE)
{
const char *error_description = "Error code out of bounds";
if (version_error >= 0 && version_error < MARPA_ERROR_COUNT)
{
error_description = marpa_error_description[version_error].name;
}
croak ("Problem in Marpa::R2->new(): %s", error_description);
}
g = marpa_g_new( MARPA_MAJOR_VERSION, MARPA_MINOR_VERSION, MARPA_MICRO_VERSION);
Newx( g_wrapper, 1, G_Wrapper );
g_wrapper->g = g;
g_wrapper->message_buffer = NULL;
sv = sv_newmortal();
sv_setref_pv(sv, grammar_c_class_name, (void*)g_wrapper);
XPUSHs(sv);
}
void
DESTROY( g_wrapper )
G_Wrapper *g_wrapper;
PREINIT:
Marpa_Grammar grammar;
CODE:
if (g_wrapper->message_buffer)
Safefree(g_wrapper->message_buffer);
grammar = g_wrapper->g;
marpa_g_unref( grammar );
Safefree( g_wrapper );
void
event( g_wrapper, ix )
G_Wrapper *g_wrapper;
int ix;
PPCODE:
{
Marpa_Grammar g = g_wrapper->g;
Marpa_Event event;
const char *result_string = NULL;
Marpa_Event_Type result = marpa_g_event (g, &event, ix);
if (result == -1)
{
XSRETURN_UNDEF;
}
if (result < 0)
{
croak ("Problem in g->event(): %s", xs_g_error (g_wrapper));
}
result_string = event_type_to_string (result);
if (!result_string)
{
croak ("Problem in g->event(): unknown event %d", result);
}
XPUSHs (sv_2mortal (newSVpv (result_string, 0)));
XPUSHs (sv_2mortal (newSViv (marpa_g_event_value(&event))));
}
Marpa_Rule_ID
rule_new( g_wrapper, lhs, rhs_av )
G_Wrapper *g_wrapper;
Marpa_Symbol_ID lhs;
AV *rhs_av;
PPCODE:
{
Marpa_Grammar g = g_wrapper->g;
int length;
Marpa_Symbol_ID* rhs;
Marpa_Rule_ID new_rule_id;
length = av_len(rhs_av)+1;
if (length <= 0) {
rhs = (Marpa_Symbol_ID*)NULL;
} else {
int i;
Newx(rhs, length, Marpa_Symbol_ID);
for (i = 0; i < length; i++) {
SV** elem = av_fetch(rhs_av, i, 0);
if (elem == NULL) {
Safefree(rhs);
XSRETURN_UNDEF;
} else {
rhs[i] = SvIV(*elem);
}
}
}
new_rule_id = marpa_g_rule_new(g, lhs, rhs, length);
Safefree(rhs);
if (new_rule_id < 0) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(new_rule_id) ) );
}
# This function invalidates any current iteration on
# the hash args. This seesm to be the way things are
# done in Perl -- in particular there seems to be no
# easy way to prevent that.
Marpa_Rule_ID
sequence_new( g_wrapper, lhs, rhs, args )
G_Wrapper *g_wrapper;
Marpa_Symbol_ID lhs;
Marpa_Symbol_ID rhs;
HV *args;
PPCODE:
{
Marpa_Grammar g = g_wrapper->g;
Marpa_Rule_ID new_rule_id;
Marpa_Symbol_ID separator = -1;
int min = 1;
int flags = 0;
if (args) {
I32 retlen;
char* key;
SV* arg_value;
hv_iterinit(args);
while ((arg_value = hv_iternextsv (args, &key, &retlen)))
{
if ((*key == 'k') && strnEQ (key, "keep", (unsigned) retlen))
{
if (SvTRUE (arg_value))
flags |= MARPA_KEEP_SEPARATION;
continue;
}
if ((*key == 'm') && strnEQ (key, "min", (unsigned) retlen))
{
int raw_min = SvIV (arg_value);
if (raw_min < 0)
{
croak ("sequence_new(): min cannot be less than 0");
}
min = raw_min;
continue;
}
if ((*key == 'p') && strnEQ (key, "proper", (unsigned) retlen))
{
if (SvTRUE (arg_value))
flags |= MARPA_PROPER_SEPARATION;
continue;
}
if ((*key == 's') && strnEQ (key, "separator", (unsigned) retlen))
{
separator = SvIV (arg_value);
continue;
}
croak ("unknown argument to sequence_new(): %.*s", (int)retlen, key);
}
}
new_rule_id = marpa_g_sequence_new(g, lhs, rhs, separator, min, flags );
if (new_rule_id < 0) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(new_rule_id) ) );
}
void
error( g_wrapper )
G_Wrapper *g_wrapper;
PPCODE:
{
Marpa_Grammar g = g_wrapper->g;
XPUSHs (sv_2mortal (newSVpv (xs_g_error (g_wrapper), 0)));
}
void
error_code( g_wrapper )
G_Wrapper *g_wrapper;
PPCODE:
{
const Marpa_Grammar g = g_wrapper->g;
const Marpa_Error_Code error_code = marpa_g_error (g, NULL);
if (error_code < 0) {
XSRETURN_UNDEF;
}
XPUSHs (sv_2mortal (newSViv (error_code)));
}
MODULE = Marpa::R2 PACKAGE = Marpa::R2::Thin::R
void
new( class, g_wrapper )
char * class;
G_Wrapper *g_wrapper;
PPCODE:
{
int symbol_count;
Marpa_Grammar g = g_wrapper->g;
SV *sv;
R_Wrapper *r_wrapper;
Marpa_Recce r;
r = marpa_r_new(g);
if (!r) { croak ("failure in marpa_r_new: %s", xs_g_error (g_wrapper)); };
symbol_count = marpa_g_symbol_count(g);
Newx( r_wrapper, 1, R_Wrapper );
r_wrapper->r = r;
Newx( r_wrapper->terminals_buffer, symbol_count, Marpa_Symbol_ID );
r_wrapper->message_buffer = NULL;
sv = sv_newmortal();
sv_setref_pv(sv, recce_c_class_name, (void*)r_wrapper);
XPUSHs(sv);
}
void
DESTROY( r_wrapper )
R_Wrapper *r_wrapper;
PREINIT:
struct marpa_r *r;
CODE:
r = r_wrapper->r;
if (r_wrapper->message_buffer)
Safefree(r_wrapper->message_buffer);
Safefree(r_wrapper->terminals_buffer);
marpa_r_unref( r );
Safefree( r_wrapper );
void
error( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
XPUSHs (sv_2mortal (newSVpv (xs_r_error (r_wrapper), 0)));
}
void
error_code( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
const Marpa_Error_Code error_code = marpa_r_error (r, NULL);
if (error_code < 0) {
XSRETURN_UNDEF;
}
XPUSHs (sv_2mortal (newSViv (error_code)));
}
Marpa_Earleme
current_earleme( r_wrapper )
R_Wrapper *r_wrapper;
CODE:
RETVAL = marpa_r_current_earleme(r_wrapper->r);
OUTPUT:
RETVAL
Marpa_Earleme
furthest_earleme( r_wrapper )
R_Wrapper *r_wrapper;
CODE:
RETVAL = marpa_r_furthest_earleme(r_wrapper->r);
OUTPUT:
RETVAL
void
_marpa_r_is_use_leo_set( r_wrapper, boolean )
R_Wrapper *r_wrapper;
int boolean;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int result = _marpa_r_is_use_leo_set (r, (boolean ? TRUE : FALSE));
if (result < 0)
{
croak ("Problem in _marpa_r_is_use_leo_set(): %s",
xs_r_error (r_wrapper));
}
XSRETURN_YES;
}
void
_marpa_r_is_use_leo( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int boolean = _marpa_r_is_use_leo (r);
if (boolean < 0)
{
croak ("Problem in _marpa_r_is_use_leo(): %s", xs_r_error (r_wrapper));
}
if (boolean)
XSRETURN_YES;
XSRETURN_NO;
}
void
is_exhausted( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int boolean = marpa_r_is_exhausted (r);
if (boolean < 0)
{
croak ("Problem in is_exhausted(): %s", xs_r_error (r_wrapper));
}
if (boolean)
XSRETURN_YES;
XSRETURN_NO;
}
void
start_input( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
int result = marpa_r_start_input(r_wrapper->r);
if (result < 0)
{
croak ("Problem in r->start_input(): %s", xs_r_error (r_wrapper));
}
XSRETURN_YES;
}
# current earleme on success -- return that directly
# -1 means rejected because unexpected -- return undef
# -3 means rejected as duplicate -- call croak
# -2 means some other failure -- call croak
void
alternative( r_wrapper, symbol_id, value, length )
R_Wrapper *r_wrapper;
Marpa_Symbol_ID symbol_id;
int value;
int length;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int result;
result =
marpa_r_alternative (r, symbol_id, value, length);
if (result == -1)
{
XSRETURN_UNDEF;
}
if (result == -3)
{
croak ("r->alternative(): Attempt to read same symbol twice at same location");
}
if (result < 0)
{
croak ("Invalid alternative: %s", xs_r_error (r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (result)));
}
void
earley_item_warning_threshold_set( r_wrapper, too_many_earley_items )
R_Wrapper *r_wrapper;
int too_many_earley_items;
PPCODE:
{
int result =
marpa_r_earley_item_warning_threshold_set (r_wrapper->r,
too_many_earley_items);
if (result < 0)
{
croak ("Problem in r->earley_item_warning_threshold: %s", xs_r_error (r_wrapper));
}
XSRETURN_YES;
}
void
too_many_earley_items( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
int too_many_earley_items =
marpa_r_earley_item_warning_threshold (r_wrapper->r);
XPUSHs (sv_2mortal (newSViv (too_many_earley_items)));
}
void
latest_earley_set( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int latest_earley_set = marpa_r_latest_earley_set(r);
if (latest_earley_set < 0)
{
croak ("Problem with r->latest_earley_set(): %s",
xs_r_error(r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (latest_earley_set)));
}
void
_marpa_r_earley_set_size( r_wrapper, set_ordinal )
R_Wrapper *r_wrapper;
Marpa_Earley_Set_ID set_ordinal;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int earley_set_size = _marpa_r_earley_set_size (r, set_ordinal);
if (earley_set_size < 0) {
croak ("Problem in r->_marpa_r_earley_set_size(): %s", xs_r_error(r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (earley_set_size)));
}
void
_marpa_r_earley_set_trace( r_wrapper, set_ordinal )
R_Wrapper *r_wrapper;
Marpa_Earley_Set_ID set_ordinal;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
Marpa_AHFA_State_ID result = _marpa_r_earley_set_trace(
r, set_ordinal );
if (result == -1) { XSRETURN_UNDEF; }
if (result < 0) { croak("problem with r->_marpa_r_earley_set_trace: %s", xs_r_error(r_wrapper)); }
XPUSHs( sv_2mortal( newSViv(result) ) );
}
void
_marpa_r_earley_item_trace( r_wrapper, item_ordinal )
R_Wrapper *r_wrapper;
Marpa_Earley_Item_ID item_ordinal;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
Marpa_AHFA_State_ID result = _marpa_r_earley_item_trace(
r, item_ordinal);
if (result == -1) { XSRETURN_UNDEF; }
if (result < 0) { croak("problem with r->_marpa_r_earley_item_trace: %s", xs_r_error(r_wrapper)); }
XPUSHs( sv_2mortal( newSViv(result) ) );
}
void
_marpa_r_earley_item_origin( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int origin_earleme = _marpa_r_earley_item_origin (r);
if (origin_earleme < 0)
{
croak ("Problem with r->_marpa_r_earley_item_origin(): %s",
xs_r_error(r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (origin_earleme)));
}
void
_marpa_r_first_token_link_trace( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int token_id = _marpa_r_first_token_link_trace(r);
if (token_id <= -2) { croak("Trace first token link problem: %s", xs_r_error(r_wrapper)); }
if (token_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(token_id) ) );
}
void
_marpa_r_next_token_link_trace( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int token_id = _marpa_r_next_token_link_trace(r);
if (token_id <= -2) { croak("Trace next token link problem: %s", xs_r_error(r_wrapper)); }
if (token_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(token_id) ) );
}
void
_marpa_r_first_completion_link_trace( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int AHFA_state_id = _marpa_r_first_completion_link_trace(r);
if (AHFA_state_id <= -2) { croak("Trace first completion link problem: %s", xs_r_error(r_wrapper)); }
if (AHFA_state_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(AHFA_state_id) ) );
}
void
_marpa_r_next_completion_link_trace( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int AHFA_state_id = _marpa_r_next_completion_link_trace(r);
if (AHFA_state_id <= -2) { croak("Trace next completion link problem: %s", xs_r_error(r_wrapper)); }
if (AHFA_state_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(AHFA_state_id) ) );
}
void
_marpa_r_first_leo_link_trace( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int AHFA_state_id = _marpa_r_first_leo_link_trace(r);
if (AHFA_state_id <= -2) { croak("Trace first completion link problem: %s", xs_r_error(r_wrapper)); }
if (AHFA_state_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(AHFA_state_id) ) );
}
void
_marpa_r_next_leo_link_trace( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int AHFA_state_id = _marpa_r_next_leo_link_trace(r);
if (AHFA_state_id <= -2) { croak("Trace next completion link problem: %s", xs_r_error(r_wrapper)); }
if (AHFA_state_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(AHFA_state_id) ) );
}
void
_marpa_r_source_predecessor_state( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int state_id = _marpa_r_source_predecessor_state(r);
if (state_id <= -2) { croak("Problem finding trace source predecessor state: %s", xs_r_error(r_wrapper)); }
if (state_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(state_id) ) );
}
void
_marpa_r_source_leo_transition_symbol( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int symbol_id = _marpa_r_source_leo_transition_symbol(r);
if (symbol_id <= -2) { croak("Problem finding trace source leo transition symbol: %s", xs_r_error(r_wrapper)); }
if (symbol_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(symbol_id) ) );
}
void
_marpa_r_source_token( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int value;
int symbol_id = _marpa_r_source_token(r, &value);
if (symbol_id == -1) { XSRETURN_UNDEF; }
if (symbol_id < 0) { croak("Problem with r->source_token(): %s", xs_r_error(r_wrapper)); }
XPUSHs( sv_2mortal( newSViv(symbol_id) ) );
XPUSHs( sv_2mortal( newSViv(value) ) );
}
void
_marpa_r_source_middle( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int middle = _marpa_r_source_middle(r);
if (middle <= -2) { croak("Problem with r->source_middle(): %s", xs_r_error(r_wrapper)); }
if (middle == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(middle) ) );
}
void
_marpa_r_first_postdot_item_trace( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int postdot_symbol_id = _marpa_r_first_postdot_item_trace(r);
if (postdot_symbol_id <= -2) { croak("Trace first postdot item problem: %s", xs_r_error(r_wrapper)); }
if (postdot_symbol_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(postdot_symbol_id) ) );
}
void
_marpa_r_next_postdot_item_trace( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int postdot_symbol_id = _marpa_r_next_postdot_item_trace(r);
if (postdot_symbol_id <= -2) { croak("Trace next postdot item problem: %s", xs_r_error(r_wrapper)); }
if (postdot_symbol_id == -1) { XSRETURN_UNDEF; }
XPUSHs( sv_2mortal( newSViv(postdot_symbol_id) ) );
}
void
_marpa_r_postdot_symbol_trace( r_wrapper, symid )
R_Wrapper *r_wrapper;
Marpa_Symbol_ID symid;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int postdot_symbol_id = _marpa_r_postdot_symbol_trace (r, symid);
if (postdot_symbol_id == -1)
{
XSRETURN_UNDEF;
}
if (postdot_symbol_id <= 0)
{
croak ("Problem in r->postdot_symbol_trace: %s", xs_r_error (r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (postdot_symbol_id)));
}
void
_marpa_r_leo_base_state( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int leo_base_state = _marpa_r_leo_base_state (r);
if (leo_base_state == -1) { XSRETURN_UNDEF; }
if (leo_base_state < 0) {
croak ("Problem in r->leo_base_state(): %s", xs_r_error(r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (leo_base_state)));
}
void
_marpa_r_leo_base_origin( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int leo_base_origin = _marpa_r_leo_base_origin (r);
if (leo_base_origin == -1) { XSRETURN_UNDEF; }
if (leo_base_origin < 0) {
croak ("Problem in r->leo_base_origin(): %s", xs_r_error(r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (leo_base_origin)));
}
void
_marpa_r_leo_expansion_ahfa( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int leo_expansion_ahfa = _marpa_r_leo_expansion_ahfa (r);
if (leo_expansion_ahfa == -1)
{
XSRETURN_UNDEF;
}
if (leo_expansion_ahfa < 0)
{
croak ("Problem in r->leo_expansion_ahfa(): %s", xs_r_error (r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (leo_expansion_ahfa)));
}
void
_marpa_r_trace_earley_set( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int trace_earley_set = _marpa_r_trace_earley_set (r);
if (trace_earley_set < 0) {
croak ("Problem in r->trace_earley_set(): %s", xs_r_error(r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (trace_earley_set)));
}
void
_marpa_r_postdot_item_symbol( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int postdot_item_symbol = _marpa_r_postdot_item_symbol (r);
if (postdot_item_symbol < 0) {
croak ("Problem in r->postdot_item_symbol(): %s", xs_r_error(r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (postdot_item_symbol)));
}
void
_marpa_r_leo_predecessor_symbol( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{
struct marpa_r *r = r_wrapper->r;
int leo_predecessor_symbol = _marpa_r_leo_predecessor_symbol (r);
if (leo_predecessor_symbol == -1) { XSRETURN_UNDEF; }
if (leo_predecessor_symbol < 0) {
croak ("Problem in r->leo_predecessor_symbol(): %s", xs_r_error(r_wrapper));
}
XPUSHs (sv_2mortal (newSViv (leo_predecessor_symbol)));
}
void
terminals_expected( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
int count = marpa_r_terminals_expected(r, r_wrapper->terminals_buffer);
if (count < 0) {
croak ("Problem in r->terminals_expected(): %s", xs_r_error(r_wrapper));
}
if (GIMME == G_ARRAY) {
int i;
EXTEND(SP, count);
for (i = 0; i < count; i++) {
PUSHs (sv_2mortal (newSViv (r_wrapper->terminals_buffer[i])));
}
} else {
XPUSHs( sv_2mortal( newSViv(count) ) );
}
}
void
earleme_complete( r_wrapper )
R_Wrapper *r_wrapper;
PPCODE:
{ struct marpa_r* r = r_wrapper->r;
Marpa_Earleme result = marpa_r_earleme_complete(r);
if (result < 0) {
croak ("Problem in r->earleme_complete(): %s", xs_r_error(r_wrapper));
}
XPUSHs( sv_2mortal( newSViv(result) ) );
}
void
event( r_wrapper, ix )
R_Wrapper *r_wrapper;
int ix;
PPCODE:
{
struct marpa_r * const r = r_wrapper->r;
Marpa_Event event;
const char *result_string = NULL;
Marpa_Event_Type result = marpa_r_event (r, &event, ix);
if (result < 0)
{