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// param-mutation.slang
// When a parameter is passed to `in`, it is mutable but generates a warning as it probably (?)
// isn't what the programmer intended.
//DIAGNOSTIC_TEST:SIMPLE:
struct MutatingStruct
{
[mutating] void setValue(int value) { m_value = value; }
int m_value;
};
int doThing(MutatingStruct s, int v)
{
// Should generate a warning.
s.setValue(v + 1);
return s.m_value;
}
// For non-copyable types (such as HitObject or NonCopyableStruct declared below), if passed as as `in`
// should produce an error.
// NOTE! This *doesn't* produce an error (or warning) because NonCopyable types are *implicitly*
// made *ref* when parsed as arguments.
[__NonCopyableType]
struct NonCopyableStruct
{
[mutating] void setValue(int value) { m_value = value; }
int m_value;
};
int doThing2(NonCopyableStruct s, int v)
{
// Currently doesn't produce an error/warning because NonCopyableStruct is passed as *ref* implicitly.
s.setValue(v + 1);
return s.m_value;
}
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