e56db3b82e
When an interpreter type implementing an interface is used by the runtime, the runtime can extract its type and create new values using reflect, and call methods on it. The problem is that there will be no interpreted method counterpart in this case, which makes wrapper panic. Allow the String() method wrapper to always succeed and return an empty string if no interpreted method is present. This allows scripts to define custom flag.Value types on which the runtime internally instantiates values using reflect (see isZeroValue in Go src/flag/flag.go). This workaround could be generalized to all wrappers if necessary. At this moment, it is convenient to keep the default behavior of expecting instantiated interpreter methods, in order to catch interpreter bugs related to interfaces. Fixes #1276.
116 lines
4.5 KiB
Go
116 lines
4.5 KiB
Go
// Code generated by 'yaegi extract encoding/xml'. DO NOT EDIT.
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// +build go1.16,!go1.17
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package stdlib
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import (
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"encoding/xml"
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"go/constant"
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"go/token"
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"reflect"
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)
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func init() {
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Symbols["encoding/xml/xml"] = map[string]reflect.Value{
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// function, constant and variable definitions
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"CopyToken": reflect.ValueOf(xml.CopyToken),
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"Escape": reflect.ValueOf(xml.Escape),
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"EscapeText": reflect.ValueOf(xml.EscapeText),
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"HTMLAutoClose": reflect.ValueOf(&xml.HTMLAutoClose).Elem(),
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"HTMLEntity": reflect.ValueOf(&xml.HTMLEntity).Elem(),
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"Header": reflect.ValueOf(constant.MakeFromLiteral("\"<?xml version=\\\"1.0\\\" encoding=\\\"UTF-8\\\"?>\\n\"", token.STRING, 0)),
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"Marshal": reflect.ValueOf(xml.Marshal),
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"MarshalIndent": reflect.ValueOf(xml.MarshalIndent),
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"NewDecoder": reflect.ValueOf(xml.NewDecoder),
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"NewEncoder": reflect.ValueOf(xml.NewEncoder),
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"NewTokenDecoder": reflect.ValueOf(xml.NewTokenDecoder),
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"Unmarshal": reflect.ValueOf(xml.Unmarshal),
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// type definitions
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"Attr": reflect.ValueOf((*xml.Attr)(nil)),
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"CharData": reflect.ValueOf((*xml.CharData)(nil)),
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"Comment": reflect.ValueOf((*xml.Comment)(nil)),
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"Decoder": reflect.ValueOf((*xml.Decoder)(nil)),
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"Directive": reflect.ValueOf((*xml.Directive)(nil)),
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"Encoder": reflect.ValueOf((*xml.Encoder)(nil)),
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"EndElement": reflect.ValueOf((*xml.EndElement)(nil)),
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"Marshaler": reflect.ValueOf((*xml.Marshaler)(nil)),
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"MarshalerAttr": reflect.ValueOf((*xml.MarshalerAttr)(nil)),
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"Name": reflect.ValueOf((*xml.Name)(nil)),
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"ProcInst": reflect.ValueOf((*xml.ProcInst)(nil)),
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"StartElement": reflect.ValueOf((*xml.StartElement)(nil)),
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"SyntaxError": reflect.ValueOf((*xml.SyntaxError)(nil)),
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"TagPathError": reflect.ValueOf((*xml.TagPathError)(nil)),
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"Token": reflect.ValueOf((*xml.Token)(nil)),
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"TokenReader": reflect.ValueOf((*xml.TokenReader)(nil)),
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"UnmarshalError": reflect.ValueOf((*xml.UnmarshalError)(nil)),
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"Unmarshaler": reflect.ValueOf((*xml.Unmarshaler)(nil)),
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"UnmarshalerAttr": reflect.ValueOf((*xml.UnmarshalerAttr)(nil)),
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"UnsupportedTypeError": reflect.ValueOf((*xml.UnsupportedTypeError)(nil)),
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// interface wrapper definitions
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"_Marshaler": reflect.ValueOf((*_encoding_xml_Marshaler)(nil)),
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"_MarshalerAttr": reflect.ValueOf((*_encoding_xml_MarshalerAttr)(nil)),
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"_Token": reflect.ValueOf((*_encoding_xml_Token)(nil)),
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"_TokenReader": reflect.ValueOf((*_encoding_xml_TokenReader)(nil)),
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"_Unmarshaler": reflect.ValueOf((*_encoding_xml_Unmarshaler)(nil)),
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"_UnmarshalerAttr": reflect.ValueOf((*_encoding_xml_UnmarshalerAttr)(nil)),
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}
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}
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// _encoding_xml_Marshaler is an interface wrapper for Marshaler type
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type _encoding_xml_Marshaler struct {
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IValue interface{}
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WMarshalXML func(e *xml.Encoder, start xml.StartElement) error
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}
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func (W _encoding_xml_Marshaler) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
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return W.WMarshalXML(e, start)
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}
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// _encoding_xml_MarshalerAttr is an interface wrapper for MarshalerAttr type
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type _encoding_xml_MarshalerAttr struct {
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IValue interface{}
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WMarshalXMLAttr func(name xml.Name) (xml.Attr, error)
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}
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func (W _encoding_xml_MarshalerAttr) MarshalXMLAttr(name xml.Name) (xml.Attr, error) {
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return W.WMarshalXMLAttr(name)
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}
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// _encoding_xml_Token is an interface wrapper for Token type
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type _encoding_xml_Token struct {
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IValue interface{}
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}
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// _encoding_xml_TokenReader is an interface wrapper for TokenReader type
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type _encoding_xml_TokenReader struct {
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IValue interface{}
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WToken func() (xml.Token, error)
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}
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func (W _encoding_xml_TokenReader) Token() (xml.Token, error) {
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return W.WToken()
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}
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// _encoding_xml_Unmarshaler is an interface wrapper for Unmarshaler type
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type _encoding_xml_Unmarshaler struct {
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IValue interface{}
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WUnmarshalXML func(d *xml.Decoder, start xml.StartElement) error
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}
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func (W _encoding_xml_Unmarshaler) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
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return W.WUnmarshalXML(d, start)
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}
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// _encoding_xml_UnmarshalerAttr is an interface wrapper for UnmarshalerAttr type
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type _encoding_xml_UnmarshalerAttr struct {
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IValue interface{}
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WUnmarshalXMLAttr func(attr xml.Attr) error
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}
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func (W _encoding_xml_UnmarshalerAttr) UnmarshalXMLAttr(attr xml.Attr) error {
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return W.WUnmarshalXMLAttr(attr)
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}
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