#define PI 3.141592654
#define WEIRDINT (1<<(sizeof(int)*8-1))
#define btoa(EXPR) ((EXPR)?"TRUE":"FALSE")
-#define coalesce(VAR,EXPR) (VAR?VAR:(EXPR))
+#define coalesce(VAR,EXPR) (VAR?VAR:(VAR=0,(EXPR)))
+#define coalesce_str(VAR,EXPR) (VAR && *VAR?VAR:((VAR=NULL),(EXPR)))
/* .----------------------------------------------------------------------.
/ 4. C<<1 data declaration and allocation, updated 2008-01-31 xCh.
'----------------------------------------------------------------------- */
/ 7. C<<1 builtin iterators and conditionals, updated 2008-01-26 xCh.
'----------------------------------------------------------------------- */
#define loop while(TRUE)
-#define repeat(N) if(N>0) _NEW(I,0) while(_I++<N)
-#define for_range(VAR,FROM,TO) for( VAR=FROM ; FROM<=TO?VAR<=TO:VAR>=TO ; FROM<=TO?VAR++:VAR--)
+#define repeat(N) _NEW(I,0) _NEW(J,(N)) while(_I++<_J) /* C99 version would be: for(int _i=0,_j=(N);_i++<_j;) */
+#define for_range(VAR,FROM,TO) _NEW(I,(FROM)) _NEW(J,(TO)) for( VAR=_I ; _I<=_J?VAR<=_J:VAR>=_J ; _I<=_J?VAR++:VAR--)
#define for_each(NODE,HEAD) for(NODE=HEAD; NODE; NODE=NODE->__next)
#define for_search(NODE,HEAD,EXPR) for_each(NODE,HEAD) if(EXPR)
#define for_file_lines(STR,FNAME) /* _NEW(CTX,get_context()) file_read(FNAME) for(use_context(_CTX),STR=file_line(_F);release_context(_M),(*S && !feof(_F));STR=file_line(_F),end_context()) _CATCH */
#define for_input_lines(S,L) /* _NEW(CTX,get_context()) for(use_context(_CTX),STR=file_get_line(stdin);release_context(_M),(*S && !feof(stdin));STR=file_get_line(stdin)) _CATCH */
#define for_ints(VAR,...) _NEW(I,0) while( (VAR=_cll1_for_ints(_I++,__VA_ARGS__,WEIRDINT))!=WEIRDINT )
#define for_strs(VAR,...) _NEW(I,0) while( (VAR=(char *)_cll1_for_ptrs(_I++,__VA_ARGS__,NIL))!=NIL )
-#define for_args _NEW(I,1) while(_I++<argc)
+#define for_args(STR) _NEW(I,1) while(_I++<argc)
#define this_arg argv[_I]
#define next_arg ((_I+1<argc)?argv[_I]:NULL)
-#define skip_next _I++
+#define continue_args _I++
#define if_exists(NODE,HEAD,EXPR) for_search(NODE,HEAD,EXPR) break; if(NODE)
#define if_args if(argc>1)
#define switch_for_args for_args switch_str(this_arg)
#define construct(TYPE,INTERFACE) TYPE _init_##TYPE(TYPE o,INTERFACE 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_as(COMMUNITY,MEM,INTERFACE,...) (COMMUNITY)get_obj(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,...) ((((_ARG1(__VA_ARGS__,)) || /* will not compile if object is not lvalue: */(_ARG1(__VA_ARGS__,)=NULL)) && (_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_obj(TYPE) { INTERFACE __interface; };
'----------------------------------------------------------------------- */
/* 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 _DECLARE_PRINT void _cll1_print(const char *s,...)
#define _PRINT _DECLARE_PRINT _CLL1_FPRINT(stdout)
-#define _DECLARE_FPRINT void _cll1_fprint(FILE *f,char *s,...)
+#define _DECLARE_FPRINT void _cll1_fprint(FILE *f,const char *s,...)
#define _FPRINT _DECLARE_FPRINT _CLL1_FPRINT(f)
#define _CLL1_FECHO(IOSTREAM) { va_list ap; /* <-' */ for(va_start(ap,s);s!=NIL;s=va_arg(ap,char *)) fputs(coalesce(s,NIL),IOSTREAM); va_end(ap); }
#define _ECHO void _cll1_echo(char *s,...) _CLL1_FECHO(stdout)
/ 10. C<<1 private infrastructure, updated 2008-02-03 by xCh.
'----------------------------------------------------------------------- */
#define _I (_Iatom->I)
+#define _J (_Jatom->J)
#define _S (_Satom->S)
#define _F (_Fatom->F)
#define _CTX (_CTXatom->CTX)
#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)
#define _NEW(NAME,VALUE) for(_##NAME##atom=get_mem(_##NAME##Atom),_##NAME##atom->NAME=(VALUE),_##NAME##atom->c=1,push(_##NAME##atom,_##NAME##stack);_##NAME##atom->c||(pop(_##NAME##atom,_##NAME##stack),0);_##NAME##atom->c--)
#define _ANYSTACK(NAME) _##NAME##Atom _##NAME##atom,_##NAME##stack=NULL;
-#define _EXPORT_STACKS _ANYSTACK(I) _ANYSTACK(S) _ANYSTACK(F) _ANYSTACK(CTX)
+#define _EXPORT_STACKS _ANYSTACK(I) _ANYSTACK(J) _ANYSTACK(S) _ANYSTACK(F) _ANYSTACK(CTX)
_ANYATOM(int,I);
+_ANYATOM(int,J);
_ANYATOM(str,S);
_ANYATOM(FILE *,F);
_ANYATOM(void *,CTX);