decode

DecodeResult d;
d = decode("+OK\r\n ".representation);
auto v = d.value;
auto r = d.rest;

assert(v._type == ValueType.String);
assert(v._svar == "OK");
assert(r == " ".representation);

d = decode("-ERROR\r\ngarbage\r\n".representation);
v = d.value;
r = d.rest;
assert(v._type == ValueType.Error);
assert(v._svar == "ERROR");
assert(r == "garbage\r\n".representation);

d = decode(":100\r\n".representation);
v = d.value;
r = d.rest;
assert(v._type == ValueType.Integer);
assert(v._ivar == 100);
assert(r == "".representation);

d = decode("$8\r\nfoobar\r\n\r\n:41\r\n".representation);
v = d.value;
r = d.rest;
assert(v._svar == "foobar\r\n", format("<%s>", v._svar));
assert(r ==  ":41\r\n".representation);
assert(v._type == ValueType.BulkString);

d = decode("*3\r\n:1\r\n:2\r\n$6\r\nfoobar\r\nxyz".representation);
v = d.value;
r = d.rest;
assert(v._type == ValueType.List);
assert(r == "xyz".representation);