69 lines
2.0 KiB
D
69 lines
2.0 KiB
D
module core.arsd.objectutils;
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///Provides only __doPostblit and hasPostblit for making the code simpler.
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size_t structTypeInfoSize(const TypeInfo ti) pure nothrow @nogc
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{
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if (ti && typeid(ti) is typeid(TypeInfo_Struct)) // avoid a complete dynamic type cast
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{
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auto sti = cast(TypeInfo_Struct)cast(void*)ti;
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if (sti.xdtor)
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return size_t.sizeof;
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}
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return 0;
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}
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// strip const/immutable/shared/inout from type info
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inout(TypeInfo) unqualify(return scope inout(TypeInfo) cti) pure nothrow @nogc
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{
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TypeInfo ti = cast() cti;
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while (ti)
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{
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// avoid dynamic type casts
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auto tti = typeid(ti);
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if (tti is typeid(TypeInfo_Const))
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ti = (cast(TypeInfo_Const)cast(void*)ti).base;
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else if (tti is typeid(TypeInfo_Invariant))
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ti = (cast(TypeInfo_Invariant)cast(void*)ti).base;
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else if (tti is typeid(TypeInfo_Shared))
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ti = (cast(TypeInfo_Shared)cast(void*)ti).base;
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else if (tti is typeid(TypeInfo_Inout))
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ti = (cast(TypeInfo_Inout)cast(void*)ti).base;
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else
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break;
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}
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return ti;
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}
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bool hasPostblit(in TypeInfo ti) nothrow pure
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{
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return (&ti.postblit).funcptr !is &TypeInfo.postblit;
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}
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void __doPostblit(void *ptr, size_t len, const TypeInfo ti)
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{
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if (!hasPostblit(ti))
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return;
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if (auto tis = cast(TypeInfo_Struct)ti)
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{
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// this is a struct, check the xpostblit member
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auto pblit = tis.xpostblit;
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if (!pblit)
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// postblit not specified, no point in looping.
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return;
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// optimized for struct, call xpostblit directly for each element
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immutable size = ti.tsize;
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const eptr = ptr + len;
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for (;ptr < eptr;ptr += size)
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pblit(ptr);
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}
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else
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{
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// generic case, call the typeinfo's postblit function
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immutable size = ti.tsize;
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const eptr = ptr + len;
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for (;ptr < eptr;ptr += size)
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ti.postblit(ptr);
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}
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}
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