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Avoid comptime concatenation in EnumFieldStruct

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This commit is contained in:
Carl Åstholm 2024-03-12 00:53:40 +01:00
parent 44cd59a3ba
commit 5be7e2c217
1 changed files with 6 additions and 7 deletions
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13
lib/std/enums.zig
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@ -14,20 +14,19 @@ const eval_branch_quota_cushion = 5;
/// default, which may be undefined. /// default, which may be undefined.
pub fn EnumFieldStruct(comptime E: type, comptime Data: type, comptime field_default: ?Data) type { pub fn EnumFieldStruct(comptime E: type, comptime Data: type, comptime field_default: ?Data) type {
@setEvalBranchQuota(@typeInfo(E).Enum.fields.len + eval_branch_quota_cushion); @setEvalBranchQuota(@typeInfo(E).Enum.fields.len + eval_branch_quota_cushion);
const StructField = std.builtin.Type.StructField; var struct_fields: [@typeInfo(E).Enum.fields.len]std.builtin.Type.StructField = undefined;
var fields: []const StructField = &[_]StructField{}; for (&struct_fields, @typeInfo(E).Enum.fields) |*struct_field, enum_field| {
for (@typeInfo(E).Enum.fields) |field| { struct_field.* = .{
fields = fields ++ &[_]StructField{.{ .name = enum_field.name ++ "",
.name = field.name ++ "",
.type = Data, .type = Data,
.default_value = if (field_default) |d| @as(?*const anyopaque, @ptrCast(&d)) else null, .default_value = if (field_default) |d| @as(?*const anyopaque, @ptrCast(&d)) else null,
.is_comptime = false, .is_comptime = false,
.alignment = if (@sizeOf(Data) > 0) @alignOf(Data) else 0, .alignment = if (@sizeOf(Data) > 0) @alignOf(Data) else 0,
}}; };
} }
return @Type(.{ .Struct = .{ return @Type(.{ .Struct = .{
.layout = .auto, .layout = .auto,
.fields = fields, .fields = &struct_fields,
.decls = &.{}, .decls = &.{},
.is_tuple = false, .is_tuple = false,
} }); } });