Hi. I was playing around with Vala and Genie and I noticed that in the
case of Genie, the compiler adds an extra '\ n' sequence at the end of
some strings. Is that supposed to be?
Test program in Genie
// hello.gs
init
var caption = "Hello World!\n"
var hello = new HelloWorld ()
var message = hello.say (caption)
print ("Message: %s\n", message)
class HelloWorld : Object
def say (greeting : string) : string
print (greeting)
return "OK"
Some fragments of a program in C
// hello.c
...
void _vala_main (gchar** args, int args_length1) {
gchar* _tmp0_;
gchar* caption;
HelloWorld* _tmp1_;
HelloWorld* hello;
gchar* _tmp2_ = NULL;
gchar* message;
_tmp0_ = g_strdup ("Hello World!\n");
caption = _tmp0_;
_tmp1_ = hello_world_new ();
hello = _tmp1_;
_tmp2_ = hello_world_say (hello, caption);
message = _tmp2_;
g_print ("Message: %s\n\n", message); // <-- an extra '\n' here
_g_free0 (message);
_g_object_unref0 (hello);
_g_free0 (caption);
}
...
gchar* hello_world_say (HelloWorld* self, const gchar* greeting) {
gchar* result = NULL;
const gchar* _tmp0_;
gchar* _tmp1_;
gchar* _tmp2_;
gchar* _tmp3_;
g_return_val_if_fail (self != NULL, NULL);
g_return_val_if_fail (greeting != NULL, NULL);
_tmp0_ = greeting;
_tmp1_ = g_strconcat (_tmp0_, "\n", NULL); // <-- an extra '\n' here
_tmp2_ = _tmp1_;
g_print ("%s", _tmp2_);
_g_free0 (_tmp2_);
_tmp3_ = g_strdup ("OK");
result = _tmp3_;
return result;
}
...
/* hello.c generated by valac 0.14.0, the Vala compiler
* generated from hello.gs, do not modify */
#include <glib.h>
#include <glib-object.h>
#include <stdlib.h>
#include <string.h>
#define TYPE_HELLO_WORLD (hello_world_get_type ())
#define HELLO_WORLD(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TYPE_HELLO_WORLD, HelloWorld))
#define HELLO_WORLD_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), TYPE_HELLO_WORLD, HelloWorldClass))
#define IS_HELLO_WORLD(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), TYPE_HELLO_WORLD))
#define IS_HELLO_WORLD_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), TYPE_HELLO_WORLD))
#define HELLO_WORLD_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), TYPE_HELLO_WORLD, HelloWorldClass))
typedef struct _HelloWorld HelloWorld;
typedef struct _HelloWorldClass HelloWorldClass;
#define _g_free0(var) (var = (g_free (var), NULL))
#define _g_object_unref0(var) ((var == NULL) ? NULL : (var = (g_object_unref (var), NULL)))
typedef struct _HelloWorldPrivate HelloWorldPrivate;
struct _HelloWorld {
GObject parent_instance;
HelloWorldPrivate * priv;
};
struct _HelloWorldClass {
GObjectClass parent_class;
};
static gpointer hello_world_parent_class = NULL;
void _vala_main (gchar** args, int args_length1);
HelloWorld* hello_world_new (void);
HelloWorld* hello_world_construct (GType object_type);
GType hello_world_get_type (void) G_GNUC_CONST;
gchar* hello_world_say (HelloWorld* self, const gchar* greeting);
enum {
HELLO_WORLD_DUMMY_PROPERTY
};
void _vala_main (gchar** args, int args_length1) {
gchar* _tmp0_;
gchar* caption;
HelloWorld* _tmp1_;
HelloWorld* hello;
gchar* _tmp2_ = NULL;
gchar* message;
_tmp0_ = g_strdup ("Hello World!\n");
caption = _tmp0_;
_tmp1_ = hello_world_new ();
hello = _tmp1_;
_tmp2_ = hello_world_say (hello, caption);
message = _tmp2_;
g_print ("Message: %s\n\n", message);
_g_free0 (message);
_g_object_unref0 (hello);
_g_free0 (caption);
}
int main (int argc, char ** argv) {
g_type_init ();
_vala_main (argv, argc);
return 0;
}
gchar* hello_world_say (HelloWorld* self, const gchar* greeting) {
gchar* result = NULL;
const gchar* _tmp0_;
gchar* _tmp1_;
gchar* _tmp2_;
gchar* _tmp3_;
g_return_val_if_fail (self != NULL, NULL);
g_return_val_if_fail (greeting != NULL, NULL);
_tmp0_ = greeting;
_tmp1_ = g_strconcat (_tmp0_, "\n", NULL);
_tmp2_ = _tmp1_;
g_print ("%s", _tmp2_);
_g_free0 (_tmp2_);
_tmp3_ = g_strdup ("OK");
result = _tmp3_;
return result;
}
HelloWorld* hello_world_construct (GType object_type) {
HelloWorld * self = NULL;
self = (HelloWorld*) g_object_new (object_type, NULL);
return self;
}
HelloWorld* hello_world_new (void) {
return hello_world_construct (TYPE_HELLO_WORLD);
}
static void hello_world_class_init (HelloWorldClass * klass) {
hello_world_parent_class = g_type_class_peek_parent (klass);
}
static void hello_world_instance_init (HelloWorld * self) {
}
GType hello_world_get_type (void) {
static volatile gsize hello_world_type_id__volatile = 0;
if (g_once_init_enter (&hello_world_type_id__volatile)) {
static const GTypeInfo g_define_type_info = { sizeof (HelloWorldClass), (GBaseInitFunc) NULL, (GBaseFinalizeFunc) NULL, (GClassInitFunc) hello_world_class_init, (GClassFinalizeFunc) NULL, NULL, sizeof (HelloWorld), 0, (GInstanceInitFunc) hello_world_instance_init, NULL };
GType hello_world_type_id;
hello_world_type_id = g_type_register_static (G_TYPE_OBJECT, "HelloWorld", &g_define_type_info, 0);
g_once_init_leave (&hello_world_type_id__volatile, hello_world_type_id);
}
return hello_world_type_id__volatile;
}
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