github.com/v2pro/plz@v0.0.0-20221028024117-e5f9aec5b631/test/go-spew/spew/testdata/dumpcgo.go (about)

     1  // Copyright (c) 2013 Dave Collins <dave@davec.name>
     2  //
     3  // Permission to use, copy, modify, and distribute this software for any
     4  // purpose with or without fee is hereby granted, provided that the above
     5  // copyright notice and this permission notice appear in all copies.
     6  //
     7  // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     8  // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     9  // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
    10  // ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
    11  // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
    12  // ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
    13  // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
    14  
    15  // NOTE: Due to the following build constraints, this file will only be compiled
    16  // when both cgo is supported and "-tags testcgo" is added to the go test
    17  // command line.  This code should really only be in the dumpcgo_test.go file,
    18  // but unfortunately Go will not allow cgo in test files, so this is a
    19  // workaround to allow cgo types to be tested.  This configuration is used
    20  // because spew itself does not require cgo to run even though it does handle
    21  // certain cgo types specially.  Rather than forcing all clients to require cgo
    22  // and an external C compiler just to run the tests, this scheme makes them
    23  // optional.
    24  // +build cgo,testcgo
    25  
    26  package testdata
    27  
    28  /*
    29  #include <stdint.h>
    30  typedef unsigned char custom_uchar_t;
    31  
    32  char            *ncp = 0;
    33  char            *cp = "test";
    34  char             ca[6] = {'t', 'e', 's', 't', '2', '\0'};
    35  unsigned char    uca[6] = {'t', 'e', 's', 't', '3', '\0'};
    36  signed char      sca[6] = {'t', 'e', 's', 't', '4', '\0'};
    37  uint8_t          ui8ta[6] = {'t', 'e', 's', 't', '5', '\0'};
    38  custom_uchar_t   tuca[6] = {'t', 'e', 's', 't', '6', '\0'};
    39  */
    40  import "C"
    41  
    42  // GetCgoNullCharPointer returns a null char pointer via cgo.  This is only
    43  // used for tests.
    44  func GetCgoNullCharPointer() interface{} {
    45  	return C.ncp
    46  }
    47  
    48  // GetCgoCharPointer returns a char pointer via cgo.  This is only used for
    49  // tests.
    50  func GetCgoCharPointer() interface{} {
    51  	return C.cp
    52  }
    53  
    54  // GetCgoCharArray returns a char array via cgo and the array's len and cap.
    55  // This is only used for tests.
    56  func GetCgoCharArray() (interface{}, int, int) {
    57  	return C.ca, len(C.ca), cap(C.ca)
    58  }
    59  
    60  // GetCgoUnsignedCharArray returns an unsigned char array via cgo and the
    61  // array's len and cap.  This is only used for tests.
    62  func GetCgoUnsignedCharArray() (interface{}, int, int) {
    63  	return C.uca, len(C.uca), cap(C.uca)
    64  }
    65  
    66  // GetCgoSignedCharArray returns a signed char array via cgo and the array's len
    67  // and cap.  This is only used for tests.
    68  func GetCgoSignedCharArray() (interface{}, int, int) {
    69  	return C.sca, len(C.sca), cap(C.sca)
    70  }
    71  
    72  // GetCgoUint8tArray returns a uint8_t array via cgo and the array's len and
    73  // cap.  This is only used for tests.
    74  func GetCgoUint8tArray() (interface{}, int, int) {
    75  	return C.ui8ta, len(C.ui8ta), cap(C.ui8ta)
    76  }
    77  
    78  // GetCgoTypdefedUnsignedCharArray returns a typedefed unsigned char array via
    79  // cgo and the array's len and cap.  This is only used for tests.
    80  func GetCgoTypdefedUnsignedCharArray() (interface{}, int, int) {
    81  	return C.tuca, len(C.tuca), cap(C.tuca)
    82  }