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// Copyright (c) 2024, Marvin Borner <dev@marvinborner.de>
// SPDX-License-Identifier: MIT
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <target.h>
#include <parse.h>
#include <log.h>
static void fprint_blc(struct term *term, struct bloc_parsed *bloc, FILE *file)
{
switch (term->type) {
case ABS:
fprintf(file, "00");
fprint_blc(term->u.abs.term, bloc, file);
break;
case APP:
fprintf(file, "01");
fprint_blc(term->u.app.lhs, bloc, file);
fprint_blc(term->u.app.rhs, bloc, file);
break;
case VAR:
for (int i = 0; i <= term->u.var.index; i++)
fprintf(file, "1");
fprintf(file, "0");
break;
case REF:
if (term->u.ref.index + 1 >= bloc->length)
fatal("invalid ref index %ld\n", term->u.ref.index);
fprint_blc(bloc->entries[bloc->length - term->u.ref.index - 2],
bloc, file);
break;
default:
fatal("invalid type %d\n", term->type);
}
}
static void write_blc(struct bloc_parsed *bloc, FILE *file)
{
fprint_blc(bloc->entries[bloc->length - 1], bloc, file);
fprintf(file, "\n");
}
struct target_spec target_blc = {
.name = "blc",
.exec = write_blc,
};
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