tiny.zen.AsciiRenderCapacity

1pub const Capacity = struct {2    limits: Limits,3    categories_offset: usize,4    category_bytes: usize,5    stack_totals_offset: usize,6    stack_total_bytes: usize,7    canvas_offset: usize,8    output_offset: usize,9    storage_bytes: usize,1011    pub fn derive(limits: Limits) DeriveError!Capacity {12        const category_bytes = try multiplied(limits.max_categories, @sizeOf([]const u8));13        const stack_totals_offset = try aligned(category_bytes, @alignOf(diagram.bounds.StackTotal));14        const stack_total_bytes = try multiplied(15            limits.max_stack_totals,16            @sizeOf(diagram.bounds.StackTotal),17        );18        const canvas_offset = try added(stack_totals_offset, stack_total_bytes);19        const output_offset = try added(canvas_offset, limits.max_canvas_bytes);20        return .{21            .limits = limits,22            .categories_offset = 0,23            .category_bytes = category_bytes,24            .stack_totals_offset = stack_totals_offset,25            .stack_total_bytes = stack_total_bytes,26            .canvas_offset = canvas_offset,27            .output_offset = output_offset,28            .storage_bytes = try added(output_offset, limits.max_output_bytes),29        };30    }31};

1/// Checked one-region byte layout derived from `AsciiRenderLimits`.2pub const AsciiRenderCapacity = diagram.AsciiRenderCapacity;