Add support for the Go programming language.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12108 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/go/multimap/Makefile

@@ -0,0 +1,18 @@
+TOP        = ../..
+SWIG       = $(TOP)/../preinst-swig
+SRCS       = example.c
+TARGET     = example
+INTERFACE  = example.i
+SWIGOPT    =
+
+all::	go
+
+go::
+	$(MAKE) -f $(TOP)/Makefile SRCS='$(SRCS)' SWIG='$(SWIG)' \
+	SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' go
+
+clean::
+	$(MAKE) -f $(TOP)/Makefile go_clean
+
+check: all
+	$(MAKE) -f $(TOP)/Makefile TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' go_run

Examples/go/multimap/example.c

@@ -0,0 +1,53 @@
+/* File : example.c */
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+/* Compute the greatest common divisor of positive integers */
+int gcd(int x, int y) {
+  int g;
+  g = y;
+  while (x > 0) {
+    g = x;
+    x = y % x;
+    y = g;
+  }
+  return g;
+}
+
+int gcdmain(int argc, char *argv[]) {
+  int x,y;
+  if (argc != 3) {
+    printf("usage: gcd x y\n");
+    return -1;
+  }
+  x = atoi(argv[1]);
+  y = atoi(argv[2]);
+  printf("gcd(%d,%d) = %d\n", x,y,gcd(x,y));
+  return 0;
+}
+
+int count(char *bytes, int len, char c) {
+  int i;
+  int count = 0;
+  for (i = 0; i < len; i++) {
+    if (bytes[i] == c) count++;
+  }
+  return count;
+}
+
+void capitalize(char *str, int len) {
+  int i;
+  for (i = 0; i < len; i++) {
+    str[i] = (char)toupper(str[i]);
+  }
+}
+
+void circle(double x, double y) {
+  double a = x*x + y*y;
+  if (a > 1.0) {
+    printf("Bad points %g, %g\n", x,y);
+  } else {
+    printf("Good points %g, %g\n", x,y);
+  }
+}

Examples/go/multimap/example.go

@@ -0,0 +1,55 @@
+/* ----------------------------------------------------------------------------
+ * This file was automatically generated by SWIG (http://www.swig.org).
+ * Version 2.0.1
+ * 
+ * This file is not intended to be easily readable and contains a number of 
+ * coding conventions designed to improve portability and efficiency. Do not make
+ * changes to this file unless you know what you are doing--modify the SWIG 
+ * interface file instead. 
+ * ----------------------------------------------------------------------------- */
+
+package example
+
+
+type _swig_fnptr *byte
+type _swig_memberptr *byte
+
+
+func _swig_allocatememory(int) *byte
+func _swig_internal_allocate(len int) *byte {
+	return _swig_allocatememory(len)
+}
+
+func _swig_allocatestring(*byte, int) string
+func _swig_internal_makegostring(p *byte, l int) string {
+	return _swig_allocatestring(p, l)
+}
+
+func _swig_internal_gopanic(p *byte, l int) {
+	panic(_swig_allocatestring(p, l))
+}
+
+func Gcd(int, int) int
+func Gcdmain([]string) int
+func Count(string, byte) int
+func _swig_wrap_capitalize([]string)
+
+func Capitalize(arg1 []string) {
+	_swig_wrap_capitalize(arg1)
+}
+
+func _swig_wrap_circle(float64, float64)
+
+func Circle(arg1 float64, arg2 float64) {
+	_swig_wrap_circle(arg1, arg2)
+}
+
+
+type SwigcptrVoid uintptr
+type Void interface {
+	Swigcptr() uintptr;
+}
+func (p SwigcptrVoid) Swigcptr() uintptr {
+	return uintptr(p)
+}
+

Examples/go/multimap/example.i

@@ -0,0 +1,110 @@
+/* File : example.i */
+%module example
+
+%{
+extern int gcd(int x, int y);
+extern int gcdmain(int argc, char *argv[]);
+extern int count(char *bytes, int len, char c);
+extern void capitalize (char *str, int len);
+extern void circle (double cx, double cy);
+extern int squareCubed (int n, int *OUTPUT);
+%}
+
+extern int    gcd(int x, int y);
+
+%typemap(go) (int argc, char *argv[]) "[]string"
+
+%typemap(in) (int argc, char *argv[])
+%{
+  {
+    int i;
+    _gostring_* a;
+
+    $1 = $input.len;
+    a = (_gostring_*) $input.array;
+    $2 = (char **) malloc (($1 + 1) * sizeof (char *));
+    for (i = 0; i < $1; i++) {
+      _gostring_ *ps = &a[i];
+      $2[i] = (char *) ps->p;
+    }
+    $2[i] = NULL;
+  }
+%}
+
+%typemap(argout) (int argc, char *argv[]) "" /* override char *[] default */
+
+%typemap(freearg) (int argc, char *argv[])
+%{
+  free($2);
+%}
+
+extern int gcdmain(int argc, char *argv[]);
+
+%typemap(go) (char *bytes, int len) "string"
+
+%typemap(in) (char *bytes, int len)
+%{
+  $1 = $input.p;
+  $2 = $input.n;
+%}
+
+extern int count(char *bytes, int len, char c);
+
+/* This example shows how to wrap a function that mutates a c string. A one
+ * element Go string slice is used so that the string can be returned
+ * modified.
+ */
+
+%typemap(go) (char *str, int len) "[]string"
+
+%typemap(in) (char *str, int len)
+%{
+  {
+    _gostring_ *a;
+    char *p;
+    int n;
+
+    a = (_gostring_*) $input.array;
+    p = a[0].p;
+    n = a[0].n;
+    $1 = malloc(n + 1);
+    $2 = n;
+    memcpy($1, p, n);
+  }
+%}
+
+/* Return the mutated string as a modified element in the array. */
+%typemap(argout) (char *str, int len)
+%{
+  {
+    _gostring_ *a;
+
+    a = (_gostring_*) $input.array;
+    a[0] = _swig_makegostring($1, $2);
+  }
+%}
+
+%typemap(freearg) (char *str, int len)
+%{
+  free($1);
+%}
+
+extern void capitalize(char *str, int len);
+
+/* A multi-valued constraint.  Force two arguments to lie
+   inside the unit circle */
+
+%typemap(check) (double cx, double cy)
+%{
+  {
+     double a = $1*$1 + $2*$2;
+     if (a > 1.0) {
+       _swig_gopanic("$1_name and $2_name must be in unit circle");
+       return;
+     }
+  }
+%}
+
+extern void circle(double cx, double cy);
+
+

Examples/go/multimap/runme.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"fmt"
+	. "./example"
+)
+
+func main() {
+	// Call our gcd() function
+	x := 42
+	y := 105
+	g := Gcd(x, y)
+	fmt.Println("The gcd of ", x, " and ", y, " is ", g)
+
+	// Call the gcdmain() function
+	args := []string{"gcdmain", "42", "105"}
+	Gcdmain(args)
+
+	// Call the count function
+	fmt.Println(Count("Hello World", 'l'))
+
+	// Call the capitalize function
+	capitalizeMe := []string{"hello world"}
+	Capitalize(capitalizeMe)
+	fmt.Println(capitalizeMe[0])
+}