typedef int bool;
extern str NIL,EOL,OFS,IFS;
extern unsigned RANDOM_SEED;
-#define _EXPORT_GLOBALS str NIL="(null)", EOL="\n", OFS=" ", IFS=" \t\n"; unsigned RANDOM_SEED=0; void *_PTR;
+#define _EXPORT_GLOBALS str NIL="(null)", EOL="\n", OFS=" ", IFS=" \t\n"; unsigned RANDOM_SEED=0;
/* .----------------------------------------------------------------------.
/ 1. C<<1 then buddhist section, updated 2008-02-04 xCh.
'----------------------------------------------------------------------- */
#define tree(TYPE) TYPE __next; TYPE __seek
#define dict(TYPE) tree(TYPE); str __key
#define array(TYPE) tree(TYPE); int __key
-#define interface(TYPE) TYPE __interface
+
/* .----------------------------------------------------------------------.
/ 5. C<<1 string manipulation, updated 2008-01-26 xCh.
'----------------------------------------------------------------------- */
'----------------------------------------------------------------------- */
#define push(NODE,HEAD) ( NODE ? ((NODE->__next=HEAD),(HEAD=NODE)) : NULL )
#define pop(NODE,HEAD) ( HEAD ? ((NODE=HEAD->__next),free(HEAD),(HEAD=NODE)) : (NODE=NULL) )
-#define append(NODE,HEAD) { _PTR=NODE; NODE->__next=NULL; for_search(NODE,HEAD,!NODE->__next) { NODE->__next=_PTR; break; } }
+#define append(NODE,HEAD) { void *_PTR=NODE; if(NODE) NODE->__next=NULL; if(HEAD) { for_search(NODE,HEAD,!NODE->__next) { NODE->__next=_PTR; break; } } else HEAD=NODE; }
#define remove(NODE,HEAD,EXPR) { void **_D=NULL; /* <-' */ for_search(NODE,HEAD,EXPR) { if(_D)*_D=NODE->__next; else HEAD=NODE->__next; free(NODE); } else _D=(void *)&(NODE->__next); }
#define drop(NODE,HEAD) for( NODE=HEAD; NODE || (HEAD=NULL); HEAD=NODE, NODE=NODE->__next, free(HEAD) )
//to do: seek
'----------------------------------------------------------------------- */
#define def_type(TYPE) typedef struct _##TYPE##_t * TYPE;
#define def_obj(TYPE) struct _##TYPE##_t
+#define interface(TYPE) TYPE __interface
+#define interface_of(SELF) SELF->__interface
#define method(NAME) (*NAME)
#define construct(TYPE) TYPE _init_##TYPE(TYPE o,void *i) { o->__interface=i; return o; } TYPE __init__##TYPE
#define get_obj(TYPE,INTERFACE,...) __init__##TYPE(_init_##TYPE(get_mem(TYPE),INTERFACE),__VA_ARGS__)
-#define Get_obj(ID,MEM,INTERFACE) MEM ID=get_obj(MEM,INTERFACE)
-#define get_obj_as(COMMUNITY,MEM,INTERFACE) (COMMUNITY)get_obj(MEM,INTERFACE)
-#define Get_obj_as(ID,COMMUNITY,MEM,INTERFACE) MEM ID=get_obj_as(COMMUNITY,MEM,INTERFACE)
-//#define _(METHOD,...) /*_ASSERT(ARG1(__VA_ARGS__,)), */(*( ARG1(__VA_ARGS__,)->__interface->METHOD )) ( __VA_ARGS__ )
-#define _(METHOD,OBJ) ( OBJ?(*( OBJ->__interface->METHOD )) ( OBJ ):0 )
+#define Get_obj(ID,MEM,...) MEM ID=get_obj(MEM,__VA_ARGS__)
+#define get_obj_as(COMMUNITY,MEM,INTERFACE,...) (COMMUNITY)get_obj(MEM,INTERFACE,__VA_ARGS__)
+#define Get_obj_as(ID,COMMUNITY,MEM,...) MEM ID=get_obj_as(COMMUNITY,MEM,INTERFACE,__VA_ARGS__)
+#define _(METHOD,...) (((_ARG1(__VA_ARGS__,)) && (_ARG1(__VA_ARGS__,))->__interface->METHOD)?(*( (_ARG1(__VA_ARGS__,))->__interface->METHOD )) ((void *)__VA_ARGS__):0 )
#define __(METHOD,...) ( _ASSERT(ARG1(__VA_ARGS__,)), (*( __cll1_seekmethod(ARG1(__VA_ARGS__,),METHOD) )) ( __VA_ARGS__ ) )
#define call(OBJTYPE,METHOD,...) { int _N=0; OBJTYPE _OBJ; /* <-' */ while( (_OBJ=(OBJTYPE)_cll1_for_ptrs(_N++,__VA_ARGS__,NIL))!=(OBJTYPE)NIL ) _(_OBJ,METHOD); }
-#define def_community(TYPE,INTERFACE) def_mem(TYPE) { INTERFACE __interface; };
+#define def_community(TYPE,INTERFACE) def_obj(TYPE) { INTERFACE __interface; };
#define anonymous void *
#define I_am(MEM) MEM self=(MEM)community
/* .----------------------------------------------------------------------.
/ 9. implementation of C<<1 library functions, updated 2008-01-26 xCh.
'----------------------------------------------------------------------- */
-//#define _MALLOC void *_cll1_malloc(size_t size) { return malloc(size); } */
+/* later... #define _MALLOC void *_cll1_malloc(size_t size) { return malloc(size); } */
#define _CLL1_FPRINT(IOSTREAM) { int ofs=0; va_list ap; /* <-' */ for(va_start(ap,s);s!=NIL;s=va_arg(ap,char *)) { if(ofs)fputs(OFS,IOSTREAM);else ofs=1;/**/fputs(coalesce(s,NIL),IOSTREAM); } va_end(ap); fputs(EOL,IOSTREAM); }
#define _DECLARE_PRINT void _cll1_print(char *s,...)
#define _PRINT _DECLARE_PRINT _CLL1_FPRINT(stdout)
#define _STRCMPI _DECLARE_STRCMPI { if(a && b) return strcasecmp(a,b); else return (int)(a-b); }
#define _DECLARE_STRSTR str _cll1_str_str(str h, str n)
#define _STRSTR _DECLARE_STRSTR { if(h && n) return strstr(h,n); else return NULL; }
-//#define _WORDINSTR char *_cll1_wordinstr(char *a,char *b,int ign) { char *IFS=a; for(;a&&*a;a++) for(;*ifs||ifs=IFS;ifs++) if(*a=b);) for return strcasestr(a,b); else return NULL; }
+// later... #define _WORDINSTR char *_cll1_wordinstr(char *a,char *b,int ign) { char *IFS=a; for(;a&&*a;a++) for(;*ifs||ifs=IFS;ifs++) if(*a=b);) for return strcasestr(a,b); else return NULL; }
extern _DECLARE_PRINT;
extern _DECLARE_FPRINT;
extern _DECLARE_STRCOLL;
#define _F (_Fatom->F)
#define _CTX (_CTXatom->CTX)
#define _ARG1(ARG1,...) ARG1
-//#define _ARG2(ARG1,ARG2,...) ARG2
-#define _ASSERT(EXPR) assert(EXPR) //later: _cll1_assert(EXPR,handler)
-#define _GET_MEM(TYPE) ((TYPE)malloc(sizeof(struct _##TYPE##_t))) //((TYPE)_cll1_malloc(sizeof(struct _##TYPE##_t)))
+#define _ASSERT(EXPR) assert(EXPR) /* later... _cll1_assert(EXPR,handler) */
+#define _GET_MEM(TYPE) ((TYPE)malloc(sizeof(struct _##TYPE##_t))) /* later... ((TYPE)_cll1_malloc(sizeof(struct _##TYPE##_t))) */
#define _ANYATOM(TYPE,NAME) def_mem(_##NAME##Atom ) { TYPE NAME; int c; list( _##NAME##Atom ); }
#define _FOR_COLUMNS(A,B,C) _NEW(I,0) for( prefix(A,B,C) ; A ; ((A!=B)&&prefix(A,B,C)||(A=NULL) ),_I++ )
#define _FOR_VALID_COLUMNS(A,B,C) _NEW(I,0) for( prefix(A,B,C) ; A ; ((A!=B)&&prefix(A,B,C))||(A=NULL) ) if(*A&&++_I)
-#include <cll1h>
+#include "cll1.h"
-def_community(Drawable_object,Actions);
+/* This is example of advanced C<<1 object oriented features... */
-def_mem(Actions)
+def_type(Shape);
+
+def_mem(Interface)
{
- void method(init) (Drawable_object self, ...);
- void method(draw) (Drawable_object self);
- int method(desc) (Drawable_object self,int something);
+ void method(draw) (Shape self);
+ void method(move) (Shape self, int x, int y);
+ str method(desc) (Shape self);
+ void method(rename) (Shape self, str name);
+ void method(reset) (Shape self, int x1, int y1, int x2, int y2, int x3, int y3);
+ int method(area) (Shape self);
+ int count;
};
+/* We intentionaly define heterogenous objects, which share only the interface
+ binding. Not only we can use different order of variables, and different
+ names - but we can even store these data on remote systems, etc. */
+
def_mem(Tri)
{
- interface(Actions);
+ interface(Interface);
int x1, y1, x2, y2, x3, y3;
+ str name;
};
def_mem(Rect)
{
- interface(Actions);
+ interface(Interface);
+ str desc;
int x1, y1, x2, y2;
};
-construct_obj(Tri,Actions);
+def_mem(Circ)
+{
+ interface(Interface);
+ int x1, y1;
+ str comment;
+ int r;
+};
-construct_obj(Rect,Actions);
+def_community(Shape, Interface);
+/* Note: interface(Interface); has to be at first position in all objects asociated in community */
def_mem(Object_list)
{
- Drawable_object object;
+ Shape object;
list(Object_list);
};
-Actions init_tri_interface(Actions this)
-{
- this->init = init_tri;
- this->draw = draw_tri;
- this->desc = desc_tri;
-
- return this;
-}
-
-Actions init_rect_interface(Actions this)
-{
- this->init = init_tri;
- this->draw = draw_rect;
- this->desc = desc_rect;
- return this;
-}
+/* implementation of methods */
-void draw_tri(Drawable_object community)
+void drawTri(Shape community)
{
I_am(Tri);
- printf("imagine I am drawing %d,%d - %d,%d - %d,%d\n",
- self->x1,self->y1,self->x2,self->y2,self->x3,self->y3);
+ printf("Drawing %s: %d,%d - %d,%d - %d,%d .\n",
+ self->name, self->x1, self->y1, self->x2, self->y2, self->x3, self->y3);
};
-void draw_rect(Drawable_object community)
+void drawRect(Shape community)
{
I_am(Rect);
- printf("imagine I am drawing %d,%d - %d,%d\n",
- self->x1,self->y1,self->x2,self->y2);
+ printf("Drawing %s: %d,%d - %d,%d .\n",
+ self->desc, self->x1, self->y1, self->x2, self->y2);
};
-int desc_tri(Drawable_object community,int something)
+void drawCirc(Shape community)
{
- I_am(Tri);
+ I_am(Circ);
- printf("I am triangle %d,%d - %d,%d - %d,%d, method draw called with argument: %d\n",
- self->x1,self->y1,self->x2,self->y2,self->x3,self->y3,something);
+ printf("Drawing %s: %d,%d - r=%d .\n",
+ self->comment, self->x1, self->y1, self->r);
+};
- return something;
+void moveTri(Shape community, int x, int y)
+{
+ I_am(Tri);
+
+ self->x1 += x;
+ self->y1 += y;
+ self->x2 += x;
+ self->y2 += y;
+ self->x3 += x;
+ self->y3 += y;
};
-int desc_rect(Drawable_object community,int something)
+void moveRect(Shape community, int x, int y)
{
I_am(Rect);
- printf("I am rectangle %d,%d - %d,%d, method draw called with argument: %d\n",
- self->x1,self->y1,self->x2,self->y2,something);
+ self->x1 += x;
+ self->y1 += y;
+ self->x2 += x;
+ self->y2 += y;
+};
- return something;
+void moveCirc(Shape community, int x, int y)
+{
+ I_am(Circ);
+
+ self->x1 += x;
+ self->y1 += y;
};
-Tri init_tri(Drawable_object self, int x1, int y1, int x2, int y2, int x3, int y3)
+str descTri(Shape community)
+{
+ return "";
+}
+
+str descRect(Shape community)
+{
+ return "";
+}
+
+str descCirc(Shape community)
+{
+ return "";
+}
+
+int calcAreaTri(Shape community)
+{
+ return 0;
+}
+
+int calcAreaRect(Shape community)
+{
+ return 0;
+}
+
+int calcAreaCirc(Shape community)
+{
+ return 0;
+}
+
+void setTri(Shape community, int x1, int y1, int x2, int y2, int x3, int y3)
{
I_am(Tri);
-
+
self->x1 = x1;
self->y1 = y1;
self->x2 = x2;
self->y2 = y2;
self->x3 = x3;
self->y3 = y3;
-
- return self;
}
-Rect init_rect(Drawable_object self, int x1, int y1, int x2, int y2)
+void setRect(Shape community, int x1, int y1, int x2, int y2, int dummy1, int dummy2)
{
I_am(Rect);
self->y1 = y1;
self->x2 = x2;
self->y2 = y2;
+}
+
+void setCirc(Shape community, int x1, int y1, int r, int dummy1, int dummy2, int dummy3)
+{
+ I_am(Circ);
+
+ self->x1 = x1;
+ self->y1 = y1;
+ self->r = r;
+}
+
+void nameRect(Shape community, str name)
+{
+ I_am(Rect);
+
+ self->desc = name;
+}
+
+/* Example of using object interface methods from inside constructor methods */
+
+construct(Tri) (Tri self, int x1, int y1, int x2, int y2, int x3, int y3)
+{
+ self->name = "TRIANGLE";
+ interface_of(self)->count++;
+ _(reset, self, x1, y1, x2, y2, x3, y3);
+
+ return self;
+}
+
+construct(Rect) (Rect self, int x1, int y1, int x2, int y2)
+{
+ self->desc = "rectangle";
+ interface_of(self)->count++;
+ _(reset, self, x1, y1, x2, y2, 0, 0);
+
+ return self;
+}
+
+construct(Circ) (Circ self, int x1, int y1, int r)
+{
+ self->comment = "Circle";
+ interface_of(self)->count++;
+ _(reset, self, x1, y1, r, 0, 0, 0);
return self;
}
+/* registration of implemented methods to three interfaces of the same type */
+
+Interface triInterface(void)
+{
+ Get_mem(this, Interface);
+
+ this->draw = drawTri;
+ this->move = moveTri;
+ this->desc = descTri;
+ this->rename = NULL;
+ this->reset = setTri;
+ this->area = calcAreaTri;
+ this->count = 0;
+
+ return this;
+}
+
+Interface rectInterface(void)
+{
+ Get_mem(this, Interface);
+
+ this->draw = drawRect;
+ this->move = moveRect;
+ this->desc = descRect;
+ this->rename = nameRect;
+ this->reset = setRect;
+ this->area = calcAreaRect;
+ this->count = 0;
+
+ return this;
+}
+
+Interface circInterface(void)
+{
+ Get_mem(this, Interface);
+
+ this->draw = drawCirc;
+ this->move = moveCirc;
+ this->desc = descCirc;
+ this->rename = NULL;
+ this->reset = setCirc;
+ this->area = calcAreaCirc;
+ this->count = 0;
+
+ return this;
+}
+
+/* usage of objects inside C<<1 program */
+
program
{
- Init_mem(tri_interface,Actions,init_tri_interface);
- Init_mem(rect_interface,Actions,init_rect_interface);
- Object_list all = NULL, one = get_mem(Object_list);
+ Interface triangles = triInterface();
+ Interface rectangles = rectInterface();
+ Interface circles = circInterface();
+ Object_list all = NULL, one;
- one->object = init_obj_as(Drawable_data, Rect, rect_interface, 0, 10, 1, 11);
- append(one,all);
- one->object = init_obj_as(Drawable_data, Tri, tri_interface, 0, 0, 0, 4, 3, 0);
- append(one,all);
- one->object = init_obj_as(Drawable_data, Rect, rect_interface, 10, 0, 11, 1);
- append(one,all);
-
- for_each(one,all)
+ one = get_mem(Object_list);
+ one->object = get_obj_as(Shape, Rect, rectangles, 0, 10, 1, 11);
+ append(one, all);
+
+ one = get_mem(Object_list);
+ one->object = get_obj_as(Shape, Tri, triangles, 0, 0, 0, 4, 3, 0);
+ append(one, all);
+
+ one = get_mem(Object_list);
+ one->object = get_obj_as(Shape, Rect, rectangles, 10, 0, 11, 1);
+ append(one, all);
+
+ one = get_mem(Object_list);
+ one->object = get_obj_as(Shape, Circ, circles, 10, 0, 5);
+ append(one, all);
+
+ printf("We have created %d triangles, %d rectangles and %d circles:\n",
+ triangles->count, rectangles->count, circles->count);
+
+ for_each(one, all)
{
- printf("(return value %d)\n", _(one->object,desc));
- _(one->object,draw);
+ _(draw, one->object);
+ printf("Area of this %s is %d (square pixels).\n", _(desc, one->object), _(area, one->object));
+ printf("We have created %d instances of this type of object.\n", interface_of(one->object)->count);
+
+ if(interface_of(one->object) == rectangles)
+ {
+ _(reset, one->object, 0, 0, 1, 1, 0, 0);
+ _(rename, one->object, "Renamed rectangle");
+ }
+ else
+ {
+ _(move, one->object, 10, 10);
+ }
}
+
+ print("Rectangles were reset to new size and renamed, other objects were moved:");
+ for_each(one, all)
+ {
+ _(draw, one->object);
+ }
}
GIT.Harvie.CZ / svn / Cll1h / .git / commitdiff
