Zig 0.17.0-dev (Split by item)

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extraData

Returns the requested data, as well as the new index which is at the start of the trailers for the object.

ErrorBundle.extraData

fn extraData(eb: ErrorBundle, comptime T: type, index: usize) struct

File

lib/std/zig/ErrorBundle.zig:130

Code

fn extraData(eb: ErrorBundle, comptime T: type, index: usize) struct { data: T, end: usize } {
    const field_names = @typeInfo(T).@"struct".field_names;
    const field_types = @typeInfo(T).@"struct".field_types;
    var i: usize = index;
    var result: T = undefined;
    inline for (field_names, field_types) |field_name, field_type| {
        @field(result, field_name) = switch (field_type) {
            u32 => eb.extra[i],
            MessageIndex => @as(MessageIndex, @fromBackingInt(@intCast(eb.extra[i]))),
            SourceLocationIndex => @as(SourceLocationIndex, @fromBackingInt(@intCast(eb.extra[i]))),
            else => @compileError("bad field type"),
        };
        i += 1;
    }
    return .{
        .data = result,
        .end = i,
    };
}