Zig 0.17.0-dev (Split by item)

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castToPtr

helpers.castToPtr

fn castToPtr(comptime DestType: type, comptime SourceType: type, target: anytype) DestType

File

lib/std/zig/c_translation/helpers.zig:231

Code

fn castToPtr(comptime DestType: type, comptime SourceType: type, target: anytype) DestType {
    switch (@typeInfo(SourceType)) {
        .int => {
            return @as(DestType, @ptrFromInt(castInt(usize, target)));
        },
        .comptime_int => {
            if (target < 0)
                return @as(DestType, @ptrFromInt(@as(usize, @bitCast(@as(isize, @intCast(target))))))
            else
                return @as(DestType, @ptrFromInt(@as(usize, @intCast(target))));
        },
        .pointer => {
            return castPtr(DestType, target);
        },
        .@"fn" => {
            return castPtr(DestType, &target);
        },
        .optional => |target_opt| {
            if (@typeInfo(target_opt.child) == .pointer) {
                return castPtr(DestType, target);
            }
        },
        else => {},
    }

    return @as(DestType, target);
}