#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include "../libueda/mcl.h"
#include "../libueda/xga.h"
#include "struct.h"

extern struct component components[];
extern int ncomponents;

extern char *get_comp_attr();
extern struct grid_pkg_desc *read_grid_pkg_file();

struct outcomp *netlist_comps;

static int
try_numpins(oc)
	register struct outcomp *oc;
{
	char *npins_attr;
	register int n;

	npins_attr = get_comp_attr(oc->mclcomp, "npins");
	if (!npins_attr)
		return(0);
	n = atoi(npins_attr);
	if (n <= 0) {
		fprintf(stderr, "component %s: invalid npins attribute\n",
			oc->name);
		exit(1);
	}
	oc->npins = n;
	return(1);
}

static int
try_gridpkg(oc)
	register struct outcomp *oc;
{
	char *attr;
	register struct grid_pkg_desc *desc;

	attr = get_comp_attr(oc->mclcomp, "grid_pkg");
	if (!attr)
		return(0);
	desc = read_grid_pkg_file(attr);
	oc->grid_pkg = desc;
	oc->npins = desc->nrows * desc->ncolumns;
	return(1);
}

static void
init_one_outcomp(oc)
	register struct outcomp *oc;
{
	register struct pinconn **conn_array;

	oc->name = oc->mclcomp->name;
	try_numpins(oc);
	if (!oc->npins)
		try_gridpkg(oc);
	if (!oc->npins) {
		fprintf(stderr,
			"error: %s has neither npins nor grid_pkg attribute\n",
			oc->name);
		exit(1);
	}
	conn_array = (struct pinconn **) malloc(sizeof(struct pinconn *) *
						oc->npins);
	if (!conn_array) {
		perror("malloc");
		exit(1);
	}
	bzero(conn_array, sizeof(struct pinconn *) * oc->npins);
	oc->conn_array = conn_array;
}

init_outcomp_from_MCL()
{
	register int i;

	netlist_comps = (struct outcomp *)
				malloc(sizeof(struct outcomp) * ncomponents);
	if (!netlist_comps) {
		perror("malloc");
		exit(1);
	}
	bzero(netlist_comps, sizeof(struct outcomp) * ncomponents);
	for (i = 0; i < ncomponents; i++) {
		netlist_comps[i].mclcomp = components + i;
		init_one_outcomp(netlist_comps + i);
	}
}