#include "builder.h"

#include <mie/select/opcode.h>
#include <stddef.h>

#define DECLARE_INSTR_TYPE(name)   extern struct select_instr_type select_##name
#define INSTR_TYPE_ENTRY(op, name) [MIE_INSTR_##op] = &select_##name

DECLARE_INSTR_TYPE(alloca);
DECLARE_INSTR_TYPE(add);
DECLARE_INSTR_TYPE(sub);
DECLARE_INSTR_TYPE(mul);
DECLARE_INSTR_TYPE(div);
DECLARE_INSTR_TYPE(cmp_eq);
DECLARE_INSTR_TYPE(cmp_neq);
DECLARE_INSTR_TYPE(cmp_lt);
DECLARE_INSTR_TYPE(cmp_gt);
DECLARE_INSTR_TYPE(cmp_leq);
DECLARE_INSTR_TYPE(cmp_geq);
DECLARE_INSTR_TYPE(load);
DECLARE_INSTR_TYPE(store);
DECLARE_INSTR_TYPE(msg);
DECLARE_INSTR_TYPE(br);
DECLARE_INSTR_TYPE(br_if);

static const struct select_instr_type *instr_types[] = {
	INSTR_TYPE_ENTRY(ALLOCA, alloca),   INSTR_TYPE_ENTRY(LOAD, load),
	INSTR_TYPE_ENTRY(STORE, store),     INSTR_TYPE_ENTRY(MSG, msg),
	INSTR_TYPE_ENTRY(BR, br),           INSTR_TYPE_ENTRY(BR_IF, br_if),
	INSTR_TYPE_ENTRY(ADD, add),         INSTR_TYPE_ENTRY(SUB, sub),
	INSTR_TYPE_ENTRY(MUL, mul),         INSTR_TYPE_ENTRY(DIV, div),
	INSTR_TYPE_ENTRY(CMP_EQ, cmp_eq),   INSTR_TYPE_ENTRY(CMP_NEQ, cmp_neq),
	INSTR_TYPE_ENTRY(CMP_LT, cmp_lt),   INSTR_TYPE_ENTRY(CMP_GT, cmp_gt),
	INSTR_TYPE_ENTRY(CMP_LEQ, cmp_leq), INSTR_TYPE_ENTRY(CMP_GEQ, cmp_geq),
};
static const size_t nr_instr_types = sizeof instr_types / sizeof instr_types[0];

const struct select_instr_type *select_type_for_instr(enum mie_instr_type instr)
{
	if (instr < 0 || instr >= nr_instr_types) {
		return NULL;
	}

	return instr_types[instr];
}