Zig 0.17.0-dev (Split by item)

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peekStruct

Reader.peekStruct

pub inline fn peekStruct(r: *Reader, comptime T: type, endian: std.builtin.Endian) Error!T

File

lib/std/Io/Reader.zig:1250

Code

pub inline fn peekStruct(r: *Reader, comptime T: type, endian: std.builtin.Endian) Error!T {
    switch (@typeInfo(T)) {
        .@"struct" => |info| switch (info.layout) {
            .auto => @compileError("ill-defined memory layout"),
            .@"extern" => {
                var res = (try r.peekStructPointer(T)).*;
                if (native_endian != endian) std.mem.byteSwapAllFields(T, &res);
                return res;
            },
            .@"packed" => {
                return @bitCast(try peekInt(r, info.backing_integer.?, endian));
            },
        },
        else => @compileError("not a struct"),
    }
}