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import "all.hff";
extern fn vpfmt(proc *fn(u8, *void) void, parg *void, fmt *const u8, ap va_list) void {
defmacro p(x) [ proc(x, parg) ]
defmacro ps(s) [
for let $s *const u8 = (s); *$s != 0; ++$s {
p(*$s);
}
]
defmacro pch(ch) [ {
extern fn isprint(int) int;
let $ch = ch;
if isprint($ch) != 0 {
p($ch);
} else {
p('\\');
p('0' + ($ch % 8));
p('0' + (($ch / 8) % 8));
p('0' + (($ch / 8 / 8) % 8));
}
} ]
static buf [100]u8 = {};
fn pritok(proc typeof(proc), parg *void, quote bool, tok *const Tok) void {
switch tok.t {
case :int;
sprintf(buf, "%lld", tok.u.int);
ps(buf);
case :flo;
sprintf(buf, "%.14f", tok.u.flo);
ps(buf);
case :bool;
ps(tok.u.bool ? "#t" : "#f");
case :str;
pfmt(proc, parg, "%S", tok.u.str);
case :chr;
let t = bswap64(tok.u.uint);
p('\'');
while t != 0 {
if t & 0xFF != 0 {
pch(t & 0xFF);
}
t >>= 8;
}
p('\'');
case :null;
ps("#null");
case :ident, :macident, :label;
if quote { p('`'); }
ps(tok.u.ident);
if quote { p('\''); }
case :gensym;
if quote { p('`'); }
p('$');
ps(tok.u.ident);
if quote { p('\''); }
case :type;
pfmt(proc, parg, "%t", tok.ty);
case else
if tok.t >= 0 and tok.t < NUM_KEYWORDS {
if quote { p('`'); }
ps(tok.u.ident);
if quote { p('\''); }
} else if tok.t > 0 {
if quote { p('`'); }
let t = bswap32(tok.t);
while t != 0 {
if t & 0xFF != 0 {
p(t);
}
t >>= 8;
}
if quote { p('\''); }
}
}
}
for let c u8 = *fmt; c != 0; c = *++fmt {
assert(c != 0, "?");
if c != '%' {
p(c);
if fmt[1] == 0 { break; }
continue;
}
let quote = #f;
for ;; {
switch (c = *++fmt) {
case 'q';
quote = #t;
continue;
case 'i', 'd';
sprintf(buf, "%d", ap->arg(int));
ps(buf);
case 'p';
sprintf(buf, "%p", ap->arg(*void));
ps(buf);
case 'c';
let ch u32 = ap->arg(int);
if quote {
p('\'');
for ch = bswap32(ch); ch != 0; ch >>= 8 {
if ch & 0xFF != 0 {
pch(ch);
}
}
p('\'');
} else {
if ch == 0 { p(0); }
else {
for ch = bswap32(ch); ch != 0; ch >>= 8 {
if ch & 0xFF != 0 {
p(ch & 0xFF);
}
}
}
}
case 's';
let s = ap->arg(*const u8);
if quote {
extern fn isprint(int) int;
p('\"');
for let c u8 #?; (c = *s++) != 0; {
pch(c);
}
p('\"');
} else {
ps(s);
}
case 'S';
let str = ap->arg([#]const u8);
p('"');
foreach(c, i, str,
pch(c);
)
p('"');
case 'T';
let tok = ap->arg(Tok);
pritok(proc, parg, quote, &tok);
case else
assert(#f, "bad fmt '%c'", c);
}
break;
}
}
}
extern fn pfmt(proc *fn(u8, *void) void, parg *void, fmt *const u8, ...) void {
let ap va_list #?;
ap->start(fmt);
vpfmt(proc, parg, fmt, ap);
ap->end();
}
extern fn vefmt(fmt *const u8, ap va_list) void {
fn eputc(c u8, *void) void {
fputc(c, stderr);
}
vpfmt(&eputc, #null, fmt, ap);
}
extern fn efmt(fmt *const u8, ...) void {
let ap va_list #?;
ap->start(fmt);
vefmt(fmt, ap);
ap->end();
}
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