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/* Test Objective-C method encodings. */

/* The _encoded_ parameter offsets for Objective-C methods are

   computed inductively as follows:

    - The first paramter (self) has offset 0;

    - The k-th parameter (k > 1) has offset equal to the

      sum of:

        - the offset of the k-1-st paramter

        - the (void *)-promoted size of the k-1-st parameter.

   Note that the encoded offsets need not correspond

   to the actual placement of parameters (relative to 'self')

   on the stack!  Your target's ABI may have very different

   opinions on the matter.  */

/* Contributed by Ziemowit Laski <zlaski@apple.com>.  */

/* { dg-do run } */

/* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */

#include "../objc-obj-c++-shared/TestsuiteObject.m"

#include "../objc-obj-c++-shared/runtime.h"

extern int sscanf(const char *str, const char *format, ...);

extern void abort(void);

#define CHECK_IF(expr) if(!(expr)) abort()

@interface Foo: TestsuiteObject

typedef struct { float x, y; } XXPoint;

typedef struct { float width, height; } XXSize;

typedef struct _XXRect { XXPoint origin; XXSize size; } XXRect;

-(id)setRect:(XXRect)r withInt:(int)i;

-(void) char:(signed char)c float:(float)f double:(double)d long:(long)l;

@end

XXRect my_rect;

unsigned offs1, offs2, offs3, offs4, offs5, offs6, offs7;

@implementation Foo

-(id)setRect:(XXRect)r withInt:(int)i {

  unsigned offs = sizeof(self);

  CHECK_IF(offs == offs3);

  offs += sizeof(_cmd);

  CHECK_IF(offs == offs4);

  offs += sizeof(r);

  CHECK_IF(offs == offs5);

  offs += sizeof(i);

  CHECK_IF(offs == offs1);

  return nil;

}

-(void) char:(signed char)c float:(float)f double:(double)d long:(long)l {

  unsigned offs = sizeof(self);

  CHECK_IF(offs == offs3);

  offs += sizeof(_cmd);

  CHECK_IF(offs == offs4);

  offs += sizeof((int)c);

  CHECK_IF(offs == offs5);

  offs += sizeof(f);

  CHECK_IF(offs == offs6);

  offs += sizeof(d);

  CHECK_IF(offs == offs7);

  offs += sizeof(l);

  CHECK_IF(offs == offs1);

}

@end

int main(void) {

  Foo *foo = [[Foo alloc] init];

  Class fooClass = objc_getClass("Foo");

  Method meth;

  const char *string;

  meth = class_getInstanceMethod(fooClass, @selector(setRect:withInt:));

  offs2 = 9999;

  sscanf(method_getTypeEncoding(meth), "@%u@%u:%u{_XXRect={?=ff}{?=ff}}%ui%u", &offs1, &offs2, &offs3,

      &offs4, &offs5);

  CHECK_IF(!offs2);

  [foo setRect:my_rect withInt:123];

  meth = class_getInstanceMethod(fooClass, @selector(char:float:double:long:));

  offs2 = 9999;

  if (sizeof (long) == 8)

    string = "v%u@%u:%uc%uf%ud%uq%u";

  else

    string = "v%u@%u:%uc%uf%ud%ul%u";

  sscanf(method_getTypeEncoding(meth), string, &offs1, &offs2, &offs3,

         &offs4, &offs5, &offs6, &offs7);

  CHECK_IF(!offs2);

  [foo char:'c' float:2.3 double:3.5 long:2345L];

  return 0;

}