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_var_arg

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This commit is contained in:
Antoni Piasecki
2026-04-04 13:14:58 +02:00
parent bb42e1fcf7
commit a17ffa184a
7 changed files with 75 additions and 58 deletions
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22
src/std/std.zr
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@@ -264,24 +264,26 @@ func mem.write16be[x: ptr, d: i64] : void
func mem.write64[x: ptr, d: any] : void
_builtin_set64(x, d)
// see emit_prologue for the io.printf wrapper
func io._printf_impl[s: ptr, args: ptr] : void
func io.printf[..] : void
let s: ptr = _var_arg(0) as ptr
let i: i64 = 1
while s[0]
if s[0] == '%'
s = s + 1
if s[0] == 'd'
io.print_i64(mem.read64(args))
args = args + 8
io.print_i64(_var_arg(i))
i = i + 1
else if s[0] == 'x'
io.print_i64_hex(mem.read64(args))
args = args + 8
io.print_i64_hex(_var_arg(i))
i = i + 1
else if s[0] == 's'
io.print(mem.read64(args) as str)
args = args + 8
io.print(_var_arg(i) as str)
i = i + 1
else if s[0] == 'c'
io.print_char(mem.read64(args) as u8)
args = args + 8
io.print_char(_var_arg(i) as u8)
i = i + 1
else if s[0] == '%'
io.print_char('%')
else if s[0] == 0