// ----------------------------------------------------------------------------
// Export filtering

// exportFilter is a special filter function to extract exported nodes.
func exportFilter(name string) bool {
	return IsExported(name)
}

// FileExports trims the AST for a Go source file in place such that
// only exported nodes remain: all top-level identifiers which are not exported

					if t.Kind() == reflect.Pointer {
						t = t.Elem()
					}
					if !sf.IsExported() && t.Kind() != reflect.Struct {
						// Ignore embedded fields of unexported non-struct types.
						continue
					}
					// Do not ignore embedded fields of unexported struct types
					// since they may have exported fields.
				} else if !sf.IsExported() {
					// Ignore unexported non-embedded fields.
					continue
				}

// visible reports whether sym is exported or locally defined.
func visible(sym *types.Sym) bool {
	return sym != nil && (types.IsExported(sym.Name) || sym.Pkg == types.LocalPkg)
}

// nonexported reports whether sym is an unexported field.
func nonexported(sym *types.Sym) bool {
	return sym != nil && !types.IsExported(sym.Name)
}

func checklvalue(n ir.Node, verb string) {
	if !ir.IsAddressable(n) {

	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
		return int64Encoder(v.Int()), nil
	case reflect.Struct:
		t := v.Type()

		for i := 0; i < t.NumField(); i++ {
			if !t.Field(i).IsExported() {
				return nil, StructuralError{"struct contains unexported fields"}
			}
		}

		startingField := 0

		n := t.NumField()
		if n == 0 {
			return bytesEncoder(nil), nil
		}

			tname := rtyp.nameOff(t.Name)
			if rtyp.typeOff(t.Mtyp) == itype && tname.Name() == iname {
				pkgPath := pkgPath(tname)
				if pkgPath == "" {
					pkgPath = rtyp.nameOff(x.PkgPath).Name()
				}
				if tname.IsExported() || pkgPath == ipkg {
					ifn := rtyp.textOff(t.Ifn)
					if k == 0 {
						fun0 = ifn // we'll set m.Fun[0] at the end
					} else if firstTime {
						methods[k] = ifn
					}
					continue imethods

				// function is compiled as if in the source
				// package of the generic function.
				if !(ir.CurFunc != nil && strings.Contains(ir.CurFunc.Nname.Sym().Name, "[")) {
					if s != nil && !types.IsExported(s.Name) && s.Pkg != types.LocalPkg {
						base.Errorf("implicit assignment of unexported field '%s' in %v literal", s.Name, t)
					}
				}
				// No pushtype allowed here. Must name fields for that.

	if hv.Type() != wv.Type() {
		t.Errorf("%s: type mismatch %v want %v", prefix, hv.Type(), wv.Type())
	}
	for i := 0; i < hv.NumField(); i++ {
		name := hv.Type().Field(i).Name
		if !token.IsExported(name) {
			continue
		}
		hf := hv.Field(i).Interface()
		wf := wv.Field(i).Interface()
		if !reflect.DeepEqual(hf, wf) {
			t.Errorf("%s: %s = %v want %v", prefix, name, hf, wf)
		}
	}
}

		}
		n.underlying = u
	}

	return u
}

func (n *Named) lookupMethod(pkg *Package, name string, foldCase bool) (int, *Func) {
	n.resolve()
	if samePkg(n.obj.pkg, pkg) || isExported(name) || foldCase {
		// If n is an instance, we may not have yet instantiated all of its methods.
		// Look up the method index in orig, and only instantiate method at the
		// matching index (if any).

						// Note: Avoid eager resolve(name, obj) here, so we only
						// resolve dot-imported objects as needed.

						// A package scope may contain non-exported objects,
						// do not import them!
						if isExported(name) {
							// declare dot-imported object
							// (Do not use check.declare because it modifies the object
							// via Object.setScopePos, which leads to a race condition;

		}
		n.underlying = u
	}

	return u
}

func (n *Named) lookupMethod(pkg *Package, name string, foldCase bool) (int, *Func) {
	n.resolve()
	if samePkg(n.obj.pkg, pkg) || isExported(name) || foldCase {
		// If n is an instance, we may not have yet instantiated all of its methods.
		// Look up the method index in orig, and only instantiate method at the
		// matching index (if any).