ref: c2e43912229c28cfbc8675e8309bbc9ea9e13d31
dir: /lib/bio/mem.myr/
use std use "bio" use "types" pkg bio = const mkmem : (buf : byte[:] -> file#) ;; type mem = struct buf : byte[:] off : std.size ;; const mkmem = {buf var mem : mem# mem = std.mk([ .buf = buf, .off = 0 ]) -> mk(Rd, [ .read = {buf; -> memread(mem, buf)}, .write = {buf; -> memwrite(mem, buf)}, .seek = {off; -> memseek(mem, off)}, .close = {; std.free(mem); -> true}, ]) } const memread = {mem, dst var n n = std.min(mem.buf.len - mem.off, dst.len) std.slcp(dst[:n], mem.buf[mem.off:mem.off+n]) mem.off += n -> `std.Ok n } const memwrite = {mem, src var n n = std.min(mem.buf.len - mem.off, src.len) std.slcp(mem.buf[mem.off:mem.off+n], src[:n]) mem.off += n -> `std.Ok n } const memseek = {mem, off : std.off off = std.clamp(off, 0, mem.buf.len) mem.off = (off : std.size) -> `std.Ok off }