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#ifdef NERV_GENERIC_MATRIX
#include "../../common.h"
#include "matrix.h"
#define MATRIX_ROW_PTR(self, row) \
(MATRIX_ELEM *)((char *)MATRIX_ELEM_PTR(self) + (row) * (self)->stride)
extern const char *nerv_matrix_(tname);
extern const char *MATRIX_BASE_TNAME;
void nerv_matrix_(data_free)(Matrix *self) {
if (--(*self->data_ref) == 0)
MATRIX_DATA_FREE(MATRIX_ELEM_PTR(self));
}
void nerv_matrix_(data_retain)(Matrix *self) {
(*self->data_ref)++;
}
Matrix *nerv_matrix_(new_)(long nrow, long ncol) {
Matrix *self = (Matrix *)malloc(sizeof(Matrix));
self->nrow = nrow;
self->ncol = ncol;
self->nmax = self->nrow * self->ncol;
MATRIX_DATA_ALLOC(&MATRIX_ELEM_PTR(self), &self->stride,
sizeof(MATRIX_ELEM) * self->ncol, self->nrow);
self->data_ref = (long *)malloc(sizeof(long));
*self->data_ref = 0;
nerv_matrix_(data_retain)(self);
return self;
}
int nerv_matrix_(new)(lua_State *L) {
luaT_pushudata(L, nerv_matrix_(new_)(luaL_checkinteger(L, 1),
luaL_checkinteger(L, 2)),
nerv_matrix_(tname));
return 1;
}
int nerv_matrix_(destroy)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_matrix_(tname));
nerv_matrix_(data_free)(self);
return 0;
}
int nerv_matrix_(get_elem)(lua_State *L);
int nerv_matrix_(set_elem)(lua_State *L);
static Matrix *nerv_matrix_(getrow)(Matrix *self, int row) {
Matrix *prow = (Matrix *)malloc(sizeof(Matrix));
prow->ncol = self->ncol;
prow->nrow = 1;
prow->stride = self->stride;
prow->nmax = prow->ncol;
MATRIX_ELEM_PTR(prow) = MATRIX_ROW_PTR(self, row);
prow->data_ref = self->data_ref;
nerv_matrix_(data_retain)(self);
return prow;
}
static int nerv_matrix_(newindex)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_matrix_(tname));
if (lua_isnumber(L, 2))
{
int idx = luaL_checkinteger(L, 2);
if (self->nrow == 1)
{
if (idx < 0 || idx >= self->ncol)
nerv_error(L, "index must be within range [0, %d)", self->ncol);
MATRIX_DATA_WRITE(MATRIX_ELEM_PTR(self), idx,
luaL_checknumber(L, 3));
}
else
nerv_error(L, "cannot assign a scalar to row vector");
lua_pushboolean(L, 1);
return 2;
}
else
{
lua_pushboolean(L, 0);
return 1;
}
}
static int nerv_matrix_(index)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_matrix_(tname));
if (lua_isnumber(L, 2))
{
int idx = luaL_checkinteger(L, 2);
if (self->nrow == 1)
{
if (idx < 0 || idx >= self->ncol)
nerv_error(L, "index must be within range [0, %d)", self->ncol);
lua_pushnumber(L, MATRIX_DATA_READ(MATRIX_ELEM_PTR(self), idx));
}
else
{
if (idx < 0 || idx >= self->nrow)
nerv_error(L, "index must be within range [0, %d)", self->nrow);
luaT_pushudata(L, nerv_matrix_(getrow)(self, idx), nerv_matrix_(tname));
}
lua_pushboolean(L, 1);
return 2;
}
else
{
lua_pushboolean(L, 0);
return 1;
}
}
static int nerv_matrix_(ncol)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_matrix_(tname));
lua_pushinteger(L, self->ncol);
return 1;
}
static int nerv_matrix_(nrow)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_matrix_(tname));
lua_pushinteger(L, self->nrow);
return 1;
}
static int nerv_matrix_(get_dataref_value)(lua_State *L) {
Matrix *self = luaT_checkudata(L, 1, nerv_matrix_(tname));
lua_pushinteger(L, *(self->data_ref));
return 1;
}
static const luaL_Reg nerv_matrix_(methods)[] = {
{"get_elem", nerv_matrix_(get_elem)},
{"set_elem", nerv_matrix_(set_elem)},
{"ncol", nerv_matrix_(ncol)},
{"nrow", nerv_matrix_(nrow)},
{"get_dataref_value", nerv_matrix_(get_dataref_value)},
{"__index__", nerv_matrix_(index)},
{"__newindex__", nerv_matrix_(newindex)},
{NULL, NULL}
};
void nerv_matrix_(init)(lua_State *L) {
luaT_newmetatable(L, nerv_matrix_(tname), MATRIX_BASE_TNAME,
nerv_matrix_(new), nerv_matrix_(destroy), NULL);
luaL_register(L, NULL, nerv_matrix_(methods));
#ifdef MATRIX_INIT
MATRIX_INIT(L);
#endif
lua_pop(L, 1);
}
#endif
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