Function decode [src]

Use this function to increase idx.

Prototype

pub fn decode(d: *Decoder, comptime T: type) T

Parameters

d: *DecoderT: type

Source

  pub fn decode(d: *Decoder, comptime T: type) T {
    switch (@typeInfo(T)) {
        .int => |info| switch (info.bits) {
            8 => {
                skip(d, 1);
                return d.buf[d.idx - 1];
            },
            16 => {
                skip(d, 2);
                const b0: u16 = d.buf[d.idx - 2];
                const b1: u16 = d.buf[d.idx - 1];
                return (b0 << 8) | b1;
            },
            24 => {
                skip(d, 3);
                const b0: u24 = d.buf[d.idx - 3];
                const b1: u24 = d.buf[d.idx - 2];
                const b2: u24 = d.buf[d.idx - 1];
                return (b0 << 16) | (b1 << 8) | b2;
            },
            else => @compileError("unsupported int type: " ++ @typeName(T)),
        },
        .@"enum" => |info| {
            if (info.is_exhaustive) @compileError("exhaustive enum cannot be used");
            return @enumFromInt(d.decode(info.tag_type));
        },
        else => @compileError("unsupported type: " ++ @typeName(T)),
    }
}  