// p != nil iff we're generatig the uncommonType for a pointer type.
func (tm *TypeMap) uncommonType(n *types.Named, p *types.Pointer) llvm.Value {
uncommonTypeInit := llvm.ConstNull(tm.runtime.uncommonType.llvm)
namePtr := tm.globalStringPtr(n.Obj().Name())
uncommonTypeInit = llvm.ConstInsertValue(uncommonTypeInit, namePtr, []uint32{0})
var path string
if pkg := n.Obj().Pkg(); pkg != nil {
path = pkg.Path()
}
pkgpathPtr := tm.globalStringPtr(path)
uncommonTypeInit = llvm.ConstInsertValue(uncommonTypeInit, pkgpathPtr, []uint32{1})
// If we're dealing with an interface, stop now;
// we store interface methods on the interface
// type.
if _, ok := n.Underlying().(*types.Interface); ok {
return uncommonTypeInit
}
var methodset, pmethodset *types.MethodSet
if p != nil {
methodset = p.MethodSet()
} else {
methodset = n.MethodSet()
}
// Store methods. All methods must be stored, not only exported ones;
// this is to allow satisfying of interfaces with non-exported methods.
methods := make([]llvm.Value, methodset.Len())
for i := range methods {
sel := methodset.At(i)
mname := sel.Obj().Name()
mfunc := tm.methodResolver.ResolveMethod(sel)
ftyp := mfunc.Type().(*types.Signature)
method := llvm.ConstNull(tm.runtime.method.llvm)
name := tm.globalStringPtr(mname)
name = llvm.ConstBitCast(name, tm.runtime.method.llvm.StructElementTypes()[0])
// name
method = llvm.ConstInsertValue(method, name, []uint32{0})
// pkgPath
method = llvm.ConstInsertValue(method, pkgpathPtr, []uint32{1})
// mtyp (method type, no receiver)
{
ftyp := types.NewSignature(nil, nil, ftyp.Params(), ftyp.Results(), ftyp.IsVariadic())
mtyp := tm.ToRuntime(ftyp)
method = llvm.ConstInsertValue(method, mtyp, []uint32{2})
}
// typ (function type, with receiver)
typ := tm.ToRuntime(ftyp)
method = llvm.ConstInsertValue(method, typ, []uint32{3})
// tfn (standard method/function pointer for plain method calls)
tfn := llvm.ConstPtrToInt(mfunc.LLVMValue(), tm.target.IntPtrType())
// ifn (single-word receiver function pointer for interface calls)
ifn := tfn
if p == nil {
if tm.Sizeof(n) > int64(tm.target.PointerSize()) {
if pmethodset == nil {
pmethodset = types.NewPointer(n).MethodSet()
}
pmfunc := tm.methodResolver.ResolveMethod(pmethodset.Lookup(sel.Obj().Pkg(), mname))
ifn = llvm.ConstPtrToInt(pmfunc.LLVMValue(), tm.target.IntPtrType())
} else if _, ok := n.Underlying().(*types.Pointer); !ok {
// Create a wrapper function that takes an *int8,
// and coerces to the receiver type.
ifn = tm.interfaceFuncWrapper(mfunc.LLVMValue())
ifn = llvm.ConstPtrToInt(ifn, tm.target.IntPtrType())
}
}
method = llvm.ConstInsertValue(method, ifn, []uint32{4})
method = llvm.ConstInsertValue(method, tfn, []uint32{5})
methods[i] = method
}
methodsSliceType := tm.runtime.uncommonType.llvm.StructElementTypes()[2]
methodsSlice := tm.makeSlice(methods, methodsSliceType)
uncommonTypeInit = llvm.ConstInsertValue(uncommonTypeInit, methodsSlice, []uint32{2})
return uncommonTypeInit
}
