52 lines
1.4 KiB
Zig
52 lines
1.4 KiB
Zig
const std = @import("std");
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const util = @import("util");
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pub const Direction = enum {
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ascending,
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descending,
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pub const jsonStringify = util.jsonSerializeEnumAsString;
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};
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pub const PageDirection = enum {
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forward,
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backward,
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pub const jsonStringify = util.jsonSerializeEnumAsString;
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};
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pub fn Partial(comptime T: type) type {
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const t_fields = std.meta.fields(T);
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var fields: [t_fields.len]std.builtin.Type.StructField = undefined;
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for (std.meta.fields(T)) |f, i| fields[i] = .{
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.name = f.name,
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.field_type = ?f.field_type,
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.default_value = &@as(?f.field_type, null),
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.is_comptime = false,
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.alignment = @alignOf(?f.field_type),
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};
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return @Type(.{ .Struct = .{
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.layout = .Auto,
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.fields = &fields,
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.decls = &.{},
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.is_tuple = false,
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} });
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}
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pub fn Subset(comptime T: type, comptime selected: []const std.meta.FieldEnum(T)) type {
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var fields: [selected.len]std.builtin.Type.StructField = undefined;
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for (selected) |f, i| fields[i] = .{
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.name = @tagName(f),
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.field_type = std.meta.fieldInfo(T, f).field_type,
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.default_value = @as(?std.meta.fieldInfo(T, f).field_type, null),
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.is_comptime = false,
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.alignment = @alignOf(std.meta.fieldInfo(T, f).field_type),
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};
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return @Type(.{ .Struct = .{
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.layout = .Auto,
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.fields = &fields,
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.decls = &.{},
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.is_tuple = false,
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} });
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}
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