[Go] Add an example for goin and godirectorin
Shows how to use a go directory for passing an NULL terminated argv type array. This also exercises the bug in the previous commit. That's why the call1 function isn't assigned to zero, that the only case where that bug happens. Signed-off-by: Corey Minyard <cminyard@mvista.com>
This commit is contained in:
Corey Minyard
parent
fb4c69b4b0
commit
546763ffbc
6 changed files with 190 additions and 0 deletions
|
|
@ -12,3 +12,4 @@ reference
|
|||
simple
|
||||
template
|
||||
variables
|
||||
goin
|
||||
|
|
|
|||
18
Examples/go/goin/Makefile
Normal file
18
Examples/go/goin/Makefile
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
TOP = ../..
|
||||
SWIGEXE = $(TOP)/../swig
|
||||
SWIG_LIB_DIR = $(TOP)/../$(TOP_BUILDDIR_TO_TOP_SRCDIR)Lib
|
||||
CXXSRCS =
|
||||
TARGET = example
|
||||
INTERFACE = example.i
|
||||
SWIGOPT =
|
||||
|
||||
check: build
|
||||
$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' CXXSRCS='$(CXXSRCS)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' go_run
|
||||
|
||||
build:
|
||||
$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' CXXSRCS='$(CXXSRCS)' \
|
||||
SWIG_LIB_DIR='$(SWIG_LIB_DIR)' SWIGEXE='$(SWIGEXE)' \
|
||||
SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' go_cpp
|
||||
|
||||
clean:
|
||||
$(MAKE) -f $(TOP)/Makefile SRCDIR='$(SRCDIR)' INTERFACE='$(INTERFACE)' go_clean
|
||||
106
Examples/go/goin/example.i
Normal file
106
Examples/go/goin/example.i
Normal file
|
|
@ -0,0 +1,106 @@
|
|||
|
||||
%module(directors="1") example
|
||||
|
||||
%inline %{
|
||||
// Helper functions for converting string arrays
|
||||
#include <stdlib.h>
|
||||
void *alloc_ptr_array(unsigned int len)
|
||||
{
|
||||
return calloc(len, sizeof(void *));
|
||||
}
|
||||
void set_ptr_array(void *ain, unsigned int pos, void *val)
|
||||
{
|
||||
void **a = (void **) ain;
|
||||
a[pos] = val;
|
||||
}
|
||||
void *get_ptr_array(void *ain, unsigned int pos)
|
||||
{
|
||||
void **a = (void **) ain;
|
||||
return a[pos];
|
||||
}
|
||||
void free_ptr_array(void *ain)
|
||||
{
|
||||
void **a = (void **) ain;
|
||||
unsigned int i;
|
||||
|
||||
if (!a)
|
||||
return;
|
||||
for (i = 0; a[i]; i++) {
|
||||
free(a[i]);
|
||||
}
|
||||
free(a);
|
||||
}
|
||||
char *uintptr_to_string(void *in)
|
||||
{
|
||||
return (char *) in;
|
||||
}
|
||||
void *string_to_uintptr(char *in)
|
||||
{
|
||||
return strdup(in);
|
||||
}
|
||||
%}
|
||||
|
||||
// These typemaps convert between an array of strings in Go and a
|
||||
// const char** that is NULL terminated in C++.
|
||||
%typemap(gotype) (const char * const *) "[]string";
|
||||
%typemap(imtype) (const char * const *) "uintptr";
|
||||
%typemap(goin) (const char * const *) {
|
||||
if $input == nil || len($input) == 0 {
|
||||
$result = 0
|
||||
} else {
|
||||
$result = Alloc_ptr_array(uint(len($input) + 1))
|
||||
defer func() {
|
||||
Free_ptr_array($result)
|
||||
}()
|
||||
var i uint
|
||||
for i = 0; i < uint(len($input)); i++ {
|
||||
Set_ptr_array($result, i, String_to_uintptr($input[i]))
|
||||
}
|
||||
}
|
||||
}
|
||||
%typemap(in) (const char * const *) {
|
||||
$1 = (char **) $input;
|
||||
}
|
||||
%typemap(godirectorin) (const char * const *) {
|
||||
if ($input == 0) {
|
||||
$result = nil
|
||||
} else {
|
||||
var i uint
|
||||
for i = 0; ; i++ {
|
||||
var v uintptr = Get_ptr_array($input, i)
|
||||
if v == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
if i == 0 {
|
||||
$result = nil
|
||||
} else {
|
||||
$result = make([]string, i)
|
||||
for i = 0; ; i++ {
|
||||
var v uintptr = Get_ptr_array($input, i)
|
||||
if v == 0 {
|
||||
break
|
||||
}
|
||||
$result[i] = Uintptr_to_string(v)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
%feature("director") callbacks;
|
||||
|
||||
%inline %{
|
||||
class callbacks {
|
||||
public:
|
||||
virtual bool call1(int v, const char * const *strarray);
|
||||
virtual ~callbacks() {}
|
||||
};
|
||||
|
||||
bool check1(callbacks *c, int v, const char * const *strarray) {
|
||||
return c->call1(v, strarray);
|
||||
}
|
||||
|
||||
bool callbacks::call1(int v, const char * const *strarray) {
|
||||
return false;
|
||||
}
|
||||
%}
|
||||
26
Examples/go/goin/index.html
Normal file
26
Examples/go/goin/index.html
Normal file
|
|
@ -0,0 +1,26 @@
|
|||
<html>
|
||||
<head>
|
||||
<title>SWIG:Examples:go:going</title>
|
||||
</head>
|
||||
|
||||
<body bgcolor="#ffffff">
|
||||
|
||||
|
||||
<tt>SWIG/Examples/go/goin/</tt>
|
||||
<hr>
|
||||
|
||||
<H2>Example of using goin and godirectorin</H2>
|
||||
|
||||
<p>
|
||||
This example converts between a Go []string and a "const char * const *"
|
||||
in C/C++. It does this for a director and for a normal call.
|
||||
|
||||
<p>
|
||||
<ul>
|
||||
<li><a href="example.i">example.i</a>. SWIG interface file.
|
||||
<li><a href="runme.go">runme.go</a>. Sample Go program.
|
||||
</ul>
|
||||
|
||||
<hr>
|
||||
</body>
|
||||
</html>
|
||||
38
Examples/go/goin/runme.go
Normal file
38
Examples/go/goin/runme.go
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"swigtests/example"
|
||||
)
|
||||
|
||||
type mycallbacks struct {
|
||||
example.Callbacks
|
||||
}
|
||||
|
||||
var tststrs = []string{ "A", "BCD", "EFGH" }
|
||||
var tstint int = 5
|
||||
|
||||
func (v *mycallbacks) Call1(val int, strarray []string) bool {
|
||||
var rv bool = true
|
||||
|
||||
for i, s := range strarray {
|
||||
fmt.Printf("%d: %s\n", i, s)
|
||||
if s != tststrs[i] {
|
||||
fmt.Printf(" ***Mismatch, expected %s\n", tststrs[i])
|
||||
rv = false
|
||||
}
|
||||
}
|
||||
if val != tstint {
|
||||
rv = false
|
||||
}
|
||||
return rv
|
||||
}
|
||||
|
||||
func main() {
|
||||
cbs := &mycallbacks{}
|
||||
cbs.Callbacks = example.NewDirectorCallbacks(cbs)
|
||||
worked := example.Check1(cbs, tstint, tststrs)
|
||||
if !worked {
|
||||
panic("Data mismatch")
|
||||
}
|
||||
}
|
||||
|
|
@ -24,6 +24,7 @@ certain C declarations are turned into constants.
|
|||
<li><a href="callback/index.html">callback</a>. C++ callbacks using directors.
|
||||
<li><a href="extend/index.html">extend</a>. Polymorphism using directors.
|
||||
<li><a href="director/index.html">director</a>. Example how to utilize the director feature.
|
||||
<li><a href="goin/index.html">director</a>. Example how to use goin and godirectorin.
|
||||
</ul>
|
||||
|
||||
<h2>Compilation Issues</h2>
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue