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/*
Copyright (C) 2021 Fredrik Johansson
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include "calcium.h"
#include "fexpr.h"
#include "fexpr_builtin.h"
void
fexpr_write(calcium_stream_t stream, const fexpr_t expr)
{
ulong type = FEXPR_TYPE(expr->data[0]);
switch (type)
{
case FEXPR_TYPE_SMALL_INT:
{
slong c = ((slong) (expr->data[0])) >> FEXPR_TYPE_BITS;
calcium_write_si(stream, c);
}
break;
case FEXPR_TYPE_SMALL_SYMBOL:
{
slong i;
if (((expr->data[0] >> 8) & 0xff) == 0)
{
calcium_write(stream, fexpr_builtin_table[expr->data[0] >> 16].string);
}
else
{
char tmp[FEXPR_SMALL_SYMBOL_LEN + 1];
tmp[FEXPR_SMALL_SYMBOL_LEN] = '\0';
for (i = 0; i < FEXPR_SMALL_SYMBOL_LEN; i++)
{
char c = expr->data[0] >> ((i + 1) * 8);
tmp[i] = c;
if (c == '\0')
break;
}
calcium_write(stream, tmp);
}
}
break;
case FEXPR_TYPE_BIG_SYMBOL:
{
calcium_write(stream, (const char *) (expr->data + 1));
}
break;
case FEXPR_TYPE_SMALL_STRING:
{
slong i;
char tmp[FEXPR_SMALL_SYMBOL_LEN + 3];
/* todo: escape string */
tmp[FEXPR_SMALL_SYMBOL_LEN] = '\0';
for (i = 0; i < FEXPR_SMALL_SYMBOL_LEN; i++)
{
char c = expr->data[0] >> ((i + 1) * 8);
tmp[i] = c;
if (c == '\0')
break;
}
calcium_write(stream, "\"");
calcium_write(stream, tmp);
calcium_write(stream, "\"");
}
break;
case FEXPR_TYPE_BIG_STRING:
{
calcium_write(stream, "\"");
/* todo: escape string */
calcium_write(stream, (const char *) (expr->data + 1));
calcium_write(stream, "\"");
}
break;
case FEXPR_TYPE_BIG_INT_NEG:
case FEXPR_TYPE_BIG_INT_POS: /* todo: print without copying */
{
fmpz_t c;
fmpz_init(c);
fexpr_get_fmpz(c, expr);
calcium_write_fmpz(stream, c);
fmpz_clear(c);
}
break;
case FEXPR_TYPE_CALL0:
case FEXPR_TYPE_CALL1:
case FEXPR_TYPE_CALL2:
case FEXPR_TYPE_CALL3:
case FEXPR_TYPE_CALL4:
case FEXPR_TYPE_CALLN:
{
fexpr_t t;
ulong * ptr;
slong i, num;
if (type == FEXPR_TYPE_CALLN)
{
num = expr->data[1];
ptr = expr->data + expr->data[2];
}
else
{
ptr = expr->data + FEXPR_HEADER_SIZE;
num = type - FEXPR_TYPE_CALL0;
}
t->data = ptr;
t->alloc = 1;
fexpr_write(stream, t);
t->data += fexpr_size(t);
calcium_write(stream, "(");
for (i = 0; i < num; i++)
{
fexpr_write(stream, t);
t->data += fexpr_size(t);
if (i < num - 1)
calcium_write(stream, ", ");
}
calcium_write(stream, ")");
}
break;
default:
calcium_write(stream, "?UNKNOWN?");
}
}
void
fexpr_print(const fexpr_t expr)
{
calcium_stream_t t;
calcium_stream_init_file(t, stdout);
fexpr_write(t, expr);
}
char *
fexpr_get_str(const fexpr_t expr)
{
calcium_stream_t t;
calcium_stream_init_str(t);
fexpr_write(t, expr);
return t->s;
}