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std.testing.refAllDeclsRecursive: Stop recursive loops #19814

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std.testing.refAllDeclsRecursive: Stop recursive loops #19814

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std.testing.refAllDeclsRecursive: Stop recursive loops
elijahimmer Apr 30, 2024
718871d
Merge branch 'ziglang:master' into master
elijahimmer May 11, 2024
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8 changes: 7 additions & 1 deletion lib/std/testing.zig
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Original file line number Diff line number Diff line change
Expand Up @@ -1120,10 +1120,16 @@ pub fn refAllDecls(comptime T: type) void {
/// For deep types, you may use `@setEvalBranchQuota`.
pub fn refAllDeclsRecursive(comptime T: type) void {
if (!builtin.is_test) return;
comptime refAllDeclsRecursiveInterior(T, &[0]type{});
}

/// helper function to do the actual recursion for refAllDeclsRecursive
fn refAllDeclsRecursiveInterior(comptime T: type, comptime type_record: []const type) void {
inline for (comptime type_record) |r| if (T == r) return;
inline for (comptime std.meta.declarations(T)) |decl| {
if (@TypeOf(@field(T, decl.name)) == type) {
switch (@typeInfo(@field(T, decl.name))) {
.Struct, .Enum, .Union, .Opaque => refAllDeclsRecursive(@field(T, decl.name)),
.Struct, .Enum, .Union, .Opaque => refAllDeclsRecursiveInterior(@field(T, decl.name), type_record ++ .{T}),
else => {},
}
}
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