fromSliceAlloc

pub fn fromSliceAlloc(
    /// The type to deserialize into. May not be or contain any of the following types:
    /// * Any comptime-only type, except in a comptime field
    /// * `type`
    /// * `void`, except as a union payload
    /// * `noreturn`
    /// * An error set/error union
    /// * A many-pointer or C-pointer
    /// * An opaque type, including `anyopaque`
    /// * An async frame type, including `anyframe` and `anyframe->T`
    /// * A function
    ///
    /// All other types are valid. Unsupported types will fail at compile time.
    T: type,
    gpa: Allocator,
    source: [:0]const u8,
    diag: ?*Diagnostics,
    options: Options,
) error{ OutOfMemory, ParseZon }!T {
    if (diag) |s| s.assertEmpty();

    var ast = try std.zig.Ast.parse(gpa, source, .{ .mode = .zon });
    defer if (diag == null) ast.deinit(gpa);
    if (diag) |s| s.ast = ast;

    // If there's no diagnostics, Zoir exists for the lifetime of this function. If there is a
    // diagnostics, ownership is transferred to diagnostics.
    var zoir = try ZonGen.generate(gpa, ast, .{ .parse_str_lits = false });
    defer if (diag == null) zoir.deinit(gpa);

    if (diag) |s| s.* = .{};
    return fromZoirAlloc(T, gpa, ast, zoir, diag, options);
}