github.com/traefik/yaegi@v0.15.1/stdlib/wrapper-composed.go (about)

     1  package stdlib
     2  
     3  import (
     4  	"bufio"
     5  	"io"
     6  	"net"
     7  	"net/http"
     8  	"reflect"
     9  )
    10  
    11  // Wrappers for composed interfaces which trigger a special behavior in stdlib.
    12  // Note: it may become useless to pre-compile composed interface wrappers
    13  // once golang/go#15924 is resolved.
    14  
    15  // In net/http, a ResponseWriter may also implement a Hijacker.
    16  
    17  type _netHTTPResponseWriterHijacker struct {
    18  	IValue       interface{}
    19  	WHeader      func() http.Header
    20  	WWrite       func(a0 []byte) (int, error)
    21  	WWriteHeader func(statusCode int)
    22  
    23  	WHijack func() (net.Conn, *bufio.ReadWriter, error)
    24  }
    25  
    26  func (w _netHTTPResponseWriterHijacker) Header() http.Header {
    27  	return w.WHeader()
    28  }
    29  
    30  func (w _netHTTPResponseWriterHijacker) Write(a0 []byte) (int, error) {
    31  	return w.WWrite(a0)
    32  }
    33  
    34  func (w _netHTTPResponseWriterHijacker) WriteHeader(statusCode int) {
    35  	w.WWriteHeader(statusCode)
    36  }
    37  
    38  func (w _netHTTPResponseWriterHijacker) Hijack() (net.Conn, *bufio.ReadWriter, error) {
    39  	return w.WHijack()
    40  }
    41  
    42  // In io, a Reader may implement WriteTo, used by io.Copy().
    43  
    44  type _ioReaderWriteTo struct {
    45  	IValue interface{}
    46  	WRead  func(p []byte) (n int, err error)
    47  
    48  	WWriteTo func(w io.Writer) (n int64, err error)
    49  }
    50  
    51  func (w _ioReaderWriteTo) Read(p []byte) (n int, err error) {
    52  	return w.WRead(p)
    53  }
    54  
    55  func (w _ioReaderWriteTo) WriteTo(wr io.Writer) (n int64, err error) {
    56  	return w.WWriteTo(wr)
    57  }
    58  
    59  // In io, a Writer may implement ReadFrom, used by io.Copy().
    60  
    61  type _ioWriterReadFrom struct {
    62  	IValue interface{}
    63  	WWrite func(p []byte) (n int, err error)
    64  
    65  	WReadFrom func(r io.Reader) (n int64, err error)
    66  }
    67  
    68  func (w _ioWriterReadFrom) Write(p []byte) (n int, err error) {
    69  	return w.WWrite(p)
    70  }
    71  
    72  func (w _ioWriterReadFrom) ReadFrom(r io.Reader) (n int64, err error) {
    73  	return w.WReadFrom(r)
    74  }
    75  
    76  // Each MapType value (each slice) must be sorted by complexity, i.e. by number
    77  // of interface methods.
    78  func init() {
    79  	MapTypes[reflect.ValueOf((*_net_http_ResponseWriter)(nil))] = []reflect.Type{
    80  		reflect.ValueOf((*_netHTTPResponseWriterHijacker)(nil)).Type().Elem(),
    81  	}
    82  	MapTypes[reflect.ValueOf((*_io_Reader)(nil))] = []reflect.Type{
    83  		reflect.ValueOf((*_ioReaderWriteTo)(nil)).Type().Elem(),
    84  	}
    85  	MapTypes[reflect.ValueOf((*_io_Writer)(nil))] = []reflect.Type{
    86  		reflect.ValueOf((*_ioWriterReadFrom)(nil)).Type().Elem(),
    87  	}
    88  }