pike.git/lib/master.pike.in:fc398bba855602f9fa01235ab835c9bd4635b459

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2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 /* -*- Pike -*- * * $Id: master.pike.in,v 1.155 2001/05/31 22:50:30 hubbe Exp $ * * Master-file for Pike. * * Based on master.pike 1.67. */ // Some configurable parameters useful for debugging #pike __REAL_VERSION__ #define PIKE_AUTORELOAD // Used by describe_backtrace() et al. #if !defined(BT_MAX_STRING_LEN) || (BT_MAX_STRING_LEN <= 0) #undef BT_MAX_STRING_LEN #define BT_MAX_STRING_LEN 200 #endif /* !defined(BT_MAX_STRING_LEN) || (BT_MAX_STRING_LEN <= 0) */ constant bt_max_string_len = BT_MAX_STRING_LEN; // Enables the out of date warning in low_find_prog(). #ifndef OUT_OF_DATE_WARNING #define OUT_OF_DATE_WARNING 1 #endif /* OUT_OF_DATE_WARNING */ constant out_of_date_warning = OUT_OF_DATE_WARNING; #ifndef PIKE_WARNINGS #define PIKE_WARNINGS 0 #endif /* PIKE_WARNINGS */ /* * Functions begin here. */ #ifdef PIKE_FAKEROOT object o; string fakeroot(string s) { string tmp1=combine_path_with_cwd(s); #ifdef PIKE_FAKEROOT_OMIT foreach(PIKE_FAKEROOT_OMIT/":", string x) if(glob(x,tmp1)) return s; #endif return PIKE_FAKEROOT+tmp1; } #else #define fakeroot(X) X #endif //! @global //! Check if a path @[p] is fully qualified (ie not relative). //! //! @returns //! Returns 1 if the path is absolute, 0 otherwise. int is_absolute_path(string p) { #ifdef __NT__ p=replace(p,"\\","/"); if(sscanf(p,"%[a-zA-Z]:%*c",string s)==2 && sizeof(s)==1) return 1; #define IS_ABSOLUTE_PATH is_absolute_path #else #define IS_ABSOLUTE_PATH(X) ((X)[0]=='/') #endif return p[0]=='/'; } //! @global //! Split a path @[p] into its components. //! //! This function divides a path into its components. This might seem like //! it could be done by dividing the string on <tt>"/"</tt>, but that will //! not work on some operating systems. //! array(string) explode_path(string p) { #ifdef __NT__ p=replace(p,"\\","/"); #define EXPLODE_PATH(X) (replace((X),"\\","/")/"/") #else #define EXPLODE_PATH(X) ((X)/"/") #endif return p/"/"; } //! @global //! Returns all but the last segment of a path. //! //! @seealso //! @[basename()], @[explode_path()] string dirname(string x) { array(string) tmp=EXPLODE_PATH(x); return tmp[..sizeof(tmp)-2]*"/"; } //! @global //! Returns the last segment of a path. //! //! @seealso //! @[dirname()], @[explode_path()] string basename(string x) { array(string) tmp=EXPLODE_PATH(x); return tmp[-1]; } #define DIRNAME dirname #define BASENAME(X) (EXPLODE_PATH(X)[-1]) #define GETCWD_CACHE #define FILE_STAT_CACHE #define UNDEFINED (([])[0]) #define error(X) throw( ({ (X), backtrace()/*[0..sizeof(backtrace())-2]*/ }) ) int want_warnings = PIKE_WARNINGS; #ifdef PIKE_AUTORELOAD int autoreload_on; int newest; #define AUTORELOAD_CHECK_FILE(X) \ if(autoreload_on) if(mixed fnord=master_file_stat(X)) if(fnord[3]>newest) newest=fnord[3]; #define AUTORELOAD_BEGIN() \ int ___newest=newest; \ newest=0 #define AUTORELOAD_FINISH(VAR, CACHE, FILE) \ if(autoreload_on) { \ if(CACHE [ FILE ] && newest <= load_time[FILE]) { \ VAR = CACHE [ FILE ]; \ } \ } \ load_time[FILE]=time(); \ if(___newest > newest) newest=___newest; mapping(string:int) load_time=([]); #else #define AUTORELOAD_CHECK_FILE(X) #define AUTORELOAD_BEGIN() #define AUTORELOAD_FINISH(VAR,CACHE,FILE) #endif int compat_major=-1; int compat_minor=-1; //! @global //! Compile the Pike code in the string @[data] into a program. //! If @[filename] is not specified, it will default to @tt{"-"@}. //! //! Functionally equal to @code{@[compile](@[cpp](@[source], @[filename]))@}. //! //! @seealso //! @[compile()], @[cpp()], @[compile_file()] //! program compile_string(string source, void|string filename, object|void handler) { return compile(cpp(source, filename||"-", 1, handler, compat_major, compat_minor), handler, compat_major, compat_minor); } string master_read_file(string file) { object o=_static_modules.files()->Fd(); if(o->open(fakeroot(file),"r")) return o->read(); return 0; } #ifdef GETCWD_CACHE string current_path; int cd(string s) { current_path=0; return predef::cd(s); } string getcwd() { return current_path || (current_path=predef::getcwd()); } #endif string combine_path_with_cwd(string path) { return combine_path(IS_ABSOLUTE_PATH(path)?"/":getcwd(),path); } #define Stat _static_modules.files.Stat #ifdef FILE_STAT_CACHE #define FILE_STAT_CACHE_TIME 20 int invalidate_time; mapping(string:multiset(string)) dir_cache = ([]); Stat master_file_stat(string x) { string file, dir=combine_path_with_cwd(x); file=BASENAME(dir); dir=DIRNAME(dir); multiset(string) d; if(time() > invalidate_time) { dir_cache=([]); invalidate_time=time()+FILE_STAT_CACHE_TIME; } if(zero_type(d=dir_cache[dir])) { if(array(string) tmp=get_dir(dir)) { #ifdef __NT__ tmp=map(tmp, lower_case); #endif d=dir_cache[dir]=aggregate_multiset(@tmp); }else{ dir_cache[dir]=0; } } #ifdef __NT__ file=lower_case(file); #endif if(d && !d[file]) return 0; return predef::file_stat(x); } #else #define master_file_stat file_stat #endif mapping (string:string) environment=([]); //! @global //! @decl string getenv(string varname) //! @decl mapping(string:string) getenv() //! //! When called with no arguments, a mapping with all current envrionment //! variables will be returned. //! //! If the @[varname] argument has been given, the value of the environment //! variable with the name @[varname] will be returned. If no such //! environment variable exists, @tt{0@} (zero) will be returned. //! string|mapping(string:string) getenv(string|void s) { if(!s) return environment + ([]); return environment[s]; } //! @global //! Compile the Pike code contained in the file @[filename] into a program. //! //! This function will compile the file @[filename] to a Pike program that can //! later be instantiated. It is the same as doing //! @code{@[compile_string](@[Stdio.read_file](@[filename]), @[filename])@}. //! //! @seealso //! @[compile()], @[compile_string()], @[cpp()] //! program compile_file(string filename, object|void handler, void|program p, void|object o) { AUTORELOAD_CHECK_FILE(filename); return compile(cpp(master_read_file(filename), filename, 1, handler, compat_major, compat_minor), handler, compat_major, compat_minor, p, o); } #if 0 variant mapping(string:string) getenv() { return environment + ([]); } variant string getenv(string s) { return environment[s]; } function(:mapping(string:string))|function(string:string) getenv(s) { if(!s) return environment + ([]); return environment[s]; } mapping(string:string) getenv() | string getenv(string s) { if(!s) return environment + ([]); return environment[s]; } #endif /* 0 */ //! @global //! Sets the environment variable @[varname] to @[value]. //! //! @seealso //! @[getenv()] //! void putenv(string varname, string value) { environment[varname] = value; } //! @global string normalize_path( string X ) { #ifndef __NT__ return X; #else return replace(X,"\\","/"); #endif } mapping (string:program) programs=(["/master":object_program(this_object())]); #define capitalize(X) (upper_case((X)[..0])+(X)[1..]) array(string) query_precompiled_names(string fname) { // Filenames of potential precompiled files in priority order. return ({ fname + ".o" }); } #if constant(_static_modules.Builtin.mutex) #define THREADED object compilation_mutex = _static_modules.Builtin()->mutex(); #endif static program low_findprog(string pname, string ext, object|void handler, void|int mkobj) { program ret; Stat s; string fname=pname+ext; #ifdef THREADED object key; // FIXME: The catch is needed, since we might be called in // a context when threads are disabled. // (compile() disables threads). mixed err = catch { key=compilation_mutex->lock(2); }; if (err) { werror(sprintf("low_findprog: Caught spurious error:\n" "%s\n", describe_backtrace(err))); } #endif #ifdef PIKE_AUTORELOAD if(!autoreload_on || load_time[fname]>=time()) #endif { if(!zero_type (ret=programs[fname])) return ret; } #ifdef __NT__ // Ugly kluge to work better with cygwin32 if(getenv("OSTYPE")=="cygwin32") { string tmp=fname[..1]; if((tmp=="//" || tmp=="\\\\") && (fname[3]=='/' || fname[3]=='\\')) { if(!master_file_stat(fname)) { fname=fname[2..2]+":"+fname[3..]; } } } #endif if( (s=master_file_stat(fakeroot(fname))) && s[1]>=0 ) { AUTORELOAD_BEGIN(); #ifdef PIKE_AUTORELOAD if (load_time[fname] > s[3]) if (!zero_type (ret=programs[fname])) return ret; #endif switch(ext) { case "": case ".pike": foreach(query_precompiled_names(fname), string oname) { if(Stat s2=master_file_stat(fakeroot(oname))) { if(s2[1]>=0 && s2[3]>=s[3]) { mixed err=catch { AUTORELOAD_CHECK_FILE(oname); return programs[fname] = decode_value(master_read_file(oname), Codec()); }; if (handler) { handler->compile_warning(oname, 0, sprintf("Decode failed:\n" "\t%s", err[0])); } else { compile_warning(oname, 0, sprintf("Decode failed:\n" "\t%s", err[0])); } } else if (out_of_date_warning) { if (handler) { handler->compile_warning(oname, 0, "Compiled file is out of date\n"); } else { compile_warning(oname, 0, "Compiled file is out of date\n"); } } } } // werror("2.5: %O\n",fname); programs[fname]=ret=__empty_program(); if ( mixed e=catch { ret=compile_file(fname, handler, ret, mkobj? (objects[ret]=__null_program()) : 0); } ) { // werror("-3: %O\n",fname); ret=programs[fname]=0; if(arrayp(e) && sizeof(e) && e[0] == "Compilation failed.\n") e[1]=({}); throw(e); } break; #if constant(load_module) case ".so": if (fname == "") { werror(sprintf("low_find_prog(\"%s\", \"%s\") => load_module(\"\")\n" "%s\n", pname, ext, describe_backtrace(backtrace()))); } ret=load_module(fakeroot(fname)); #endif /* load_module */ } AUTORELOAD_FINISH(ret,programs,fname); // werror("3: %O (%O)\n",fname, ret); return programs[fname]=ret; } return 0; } static program findprog(string pname, string ext, object|void handler, void|int mkobj) { switch(ext) { case ".pike": case ".so": return low_findprog(pname,ext,handler, mkobj); default: pname+=ext; return low_findprog(pname,"", handler, mkobj) || low_findprog(pname,".pike", handler, mkobj) || low_findprog(pname,".so", handler, mkobj); } } program low_cast_to_program(string pname, string current_file, object|void handler, void|int mkobj) { string ext; string nname; array(string) tmp=EXPLODE_PATH(pname); // werror("low_cast_to_program(%O, %O, %O, %O)\n", // pname, current_file, handler, mkobj); if(sscanf(reverse(tmp[-1]),"%s.%s",ext, nname)) { ext="."+reverse(ext); tmp[-1]=reverse(nname); pname=tmp*"/"; }else{ ext=""; } if(IS_ABSOLUTE_PATH(pname)) { pname=combine_path("/",pname); return findprog(pname,ext,handler,mkobj); }else{ string cwd; if(current_file) { cwd=DIRNAME(current_file); }else{ cwd=getcwd(); } if(program ret=findprog(combine_path(cwd,pname),ext,handler,mkobj)) return ret; foreach(pike_program_path, string path) if(program ret=findprog(combine_path(path,pname),ext,handler,mkobj)) return ret; return 0; } } /* This function is called when the driver wants to cast a string * to a program, this might be because of an explicit cast, an inherit * or a implict cast. In the future it might receive more arguments, * to aid the master finding the right program. */ program cast_to_program(string pname, string current_file, object|void handler) { return low_cast_to_program(pname, current_file, handler); } /* This function is called when an error occurs that is not caught * with catch(). */ void handle_error(array(mixed)|object trace) { if(mixed x=catch { werror(describe_backtrace(trace)); }) { // One reason for this might be too little stack space, which // easily can occur for "out of stack" errors. It should help to // tune up the STACK_MARGIN values in interpret.c then. werror("Error in handle_error in master object:\n"); if(catch { if (catch { string msg = x[0]; array bt = x[1]; werror ("%s%O\nOriginal error:\n%O\n", msg, bt, trace); }) werror("%O\nOriginal error:\n%O\n",x,trace); }) { werror("sprintf() failed to write error.\n"); } } } //! @global //! @decl object new(string|program prog, mixed ... args) //! @decl object clone(string|program prog, mixed ... args) //! //! Instantiate a program. //! //! A new instance of the class @[prog] will be created. //! All global variables in the new object be initialized, and //! then @[create()] will be called with @[args] as arguments. //! //! @note //! These two functions are considered obsolete, use //! @code{((program)@[prog])(@@@[args])@} //! instead. //! //! @seealso //! @[destruct()], @[compile_string()], @[compile_file()] //! object new(string|program prog, mixed ... args) { if(stringp(prog)) { if(program p=cast_to_program(prog,backtrace()[-2][0])) return p(@args); else error(sprintf("new: failed to find program %s.\n",prog)); } return prog(@args); } function clone = new; /* This array contains the names of the functions * that a replacing master-object may want to override. */ constant master_efuns = ({ "basename", "dirname", "is_absolute_path", "explode_path", "compile_string", "compile_file", "add_include_path", "remove_include_path", "add_module_path", "remove_module_path", "add_program_path", "remove_program_path", "describe_backtrace", "describe_error", "new", "clone", "normalize_path", "getenv", "putenv", #ifdef GETCWD_CACHE "cd", "getcwd", #endif }); /* Note that create is called before add_precompiled_program */ void create() { object o = this_object(); foreach(master_efuns, string e) { if (o[e]) { add_constant(e, o[e]); } else { throw(({ sprintf("Function %O is missing from master.pike.\n", e), backtrace() })); } } add_constant("strlen", sizeof); add_constant("UNDEFINED", UNDEFINED); add_constant("write", _static_modules.files()->_stdout->write); #define CO(X) add_constant(#X,_static_modules.Builtin.__backend->X) CO(call_out); CO(_do_call_outs); CO(find_call_out); CO(remove_call_out); CO(call_out_info); #if "¤share_prefix¤"[0]!='¤' // add path for architecture-dependant files add_include_path("¤share_prefix¤/include"); add_module_path("¤share_prefix¤/modules"); #endif #if "¤lib_prefix¤"[0]!='¤' // add path for architecture-dependant files add_include_path("¤lib_prefix¤/include"); add_module_path("¤lib_prefix¤/modules"); #endif } /* * This function is called whenever a inherit is called for. * It is supposed to return the program to inherit. * The first argument is the argument given to inherit, and the second * is the file name of the program currently compiling. Note that the * file name can be changed with #line, or set by compile_string, so * it can not be 100% trusted to be a filename. * previous_object(), can be virtually anything in this function, as it * is called from the compiler. */ program handle_inherit(string pname, string current_file, object|void handler) { return cast_to_program(pname, current_file, handler); } mapping (program:object) objects=([object_program(this_object()):this_object()]); object low_cast_to_object(string oname, string current_file, object|void current_handler) { program p; object o; p = low_cast_to_program(oname, current_file, current_handler, 1); if(!p) return 0; if(!(o=objects[p])) o=objects[p]=p(); return o; } /* This function is called when the drivers wants to cast a string * to an object because of an implict or explicit cast. This function * may also receive more arguments in the future. */ object cast_to_object(string oname, string current_file) { if(object o=low_cast_to_object(oname, current_file)) return o; error("Cast '"+oname+"' to object failed"+ ((current_file && current_file!="-")?sprintf(" for '%s'",current_file):"")+".\n"); return 0; } class dirnode(string dirname, object|void handler) { constant is_resolv_dirnode = 1; mixed module=module_checker(); mapping(string:mixed) cache=([]); array(string) files; class module_checker { int `!() { module=0; if(module=findmodule(dirname+"/module", handler)) if(mixed tmp=module->_module_value) module=tmp; return !module; } mixed `[](string index) { if(module) return module[index]; } array(string) _indices() { if(module) return indices(module); } array _values() { if(module) return values(module); } } static mixed ind(string index) { if(module) { object o; if(!zero_type(o=module[index])) { // werror("Dirnode(%O) module[%O] -> %O\n",dirname,index, o); return o; } } if( !files ) files = get_dir(fakeroot(dirname)); int ret; foreach( files, string s ) { if( search(s, index)!=-1 || search(index,s)!=-1 ) { ret=1; break; } } if(!ret) return UNDEFINED; index = dirname+"/"+index; if(object o=findmodule(index, handler)) { if(mixed tmp=o->_module_value) o=tmp; return o; } if (program p=cast_to_program( index, 0, handler )) { // werror("dirnode(%O)[%O] -> %O\n",dirname,index,p); return p; } // werror("Returning UNDEFINED for %s\n",ind); return UNDEFINED; } mixed `[](string index) { mixed ret; // werror("Dirnode(%O) cache[%O] ?????\n",dirname,index); if(!zero_type(ret=cache[index])) { // werror("Dirnode(%O) cache[%O] -> %O\n",dirname,index, ret); // The check below is to (hopefully) avoid calling any function // in ret (like `! or `==) in case it's an object. if(!intp (ret) || ret) return ret; return UNDEFINED; } return cache[index]=ind(index); } static int _cache_full; void fill_cache() { #ifdef RESOLV_DEBUG werror(describe_backtrace(({ sprintf("Filling cache in dirnode %O\n", dirname), backtrace() }))); #endif /* RESOLV_DEBUG */ if (_cache_full) { return; } if (module) { foreach(indices(module), string index) { cache[index] = module[index]; } } if( !files ) files = get_dir(fakeroot(dirname)); foreach(files, string fname) { mixed err = catch { if (((< ".pike", ".pmod" >)[fname[sizeof(fname)-5..]]) && !zero_type(`[](fname[..sizeof(fname)-6]))) { continue; } else if ((fname[sizeof(fname)-3..] == ".so") && !zero_type(`[](fname[..sizeof(fname)-4]))) { continue; } }; if (err) { compile_warning(dirname+"."+fname, 0, sprintf("Compilation failed:\n" "%s\n", describe_backtrace(err))); } } _cache_full = 1; } array(string) _indices() { // werror("indices(%O) called\n", dirname); fill_cache(); return indices(filter(cache, lambda(mixed x){ return !intp (x) || x; })); } array(mixed) _values() { // werror("values(%O) called\n", dirname); fill_cache(); return values(cache)-({0}); } string _sprintf(int as) { return sprintf("master()->dirnode(%O)",dirname); } }; static class ZERO_TYPE {}; class joinnode { constant is_resolv_joinnode = 1; array(object|mapping) joined_modules; mapping(string:mixed) cache=([]); string _sprintf(int as) { return sprintf("master()->joinnode(%O)",joined_modules); } void create(array(object|mapping) _joined_modules) { joined_modules = _joined_modules; } static mixed ind(string index) { array(mixed) res = ({}); foreach(joined_modules, object|mapping o) { mixed ret; if (!zero_type(ret = o[index])) { if (objectp(ret = o[index]) && (ret->is_resolv_dirnode || ret->is_resolv_joinnode)) { // Only join directorynodes (or joinnodes). res += ({ ret }); } else if ( !zero_type(ret) ) { return (ret); } else { // Ignore continue; } } } if (sizeof(res) > 1) return joinnode(res); else if (sizeof(res)) return res[0]; return UNDEFINED; } mixed `[](string index) { mixed ret; if (!zero_type(ret = cache[index])) { if (ret != ZERO_TYPE) { return ret; } return UNDEFINED; } ret = ind(index); if (zero_type(ret)) { cache[index] = ZERO_TYPE; } else { cache[index] = ret; } return ret; } static int _cache_full; void fill_cache() { #ifdef RESOLV_DEBUG werror(describe_backtrace(({ "Filling cache in joinnode\n", backtrace() }))); #endif /* RESOLV_DEBUG */ if (_cache_full) { return; } foreach(joined_modules, object|mapping|program o) { foreach(indices(o), string index) { if (zero_type(cache[index])) { `[](index); } } } _cache_full = 1; } array(string) _indices() { fill_cache(); return indices(cache); } array(mixed) _values() { fill_cache(); return values(cache); } }; // Variables mustn't be static to allow for replace_master(). // /grubba 1998-04-10 mapping(string:mixed) fc=([]); object findmodule(string fullname, object|void handler) { object o; if(!zero_type(o=fc[fullname])) { // werror("fc[%O] -> %O\n",fullname, o); return o; } if(Stat stat=master_file_stat(fakeroot(fullname+".pmod"))) { if(stat[1]==-2) return fc[fullname]=dirnode(fullname+".pmod", handler); } if(o = low_cast_to_object(fullname+".pmod", "/.", handler)) return fc[fullname]=o; #if constant(load_module) if(master_file_stat(fakeroot(fullname+".so"))) return fc[fullname] = low_cast_to_object(fullname, "/.", handler); #endif return fc[fullname]=UNDEFINED; } mixed handle_import(string what, string|void current_file, object|void handler) { array(string) tmp; string path; if(current_file) { tmp=EXPLODE_PATH(current_file); tmp[-1]=what; path=combine_path_with_cwd( tmp*"/"); } if (handler) { return dirnode(path, handler); } return fc[path]=dirnode(path); } multiset no_resolv = (<>); class CompatResolver { array(string) pike_include_path=({}); array(string) pike_module_path=({}); array(string) pike_program_path=({}); int want_warnings = PIKE_WARNINGS; string ver; void create(mixed v) { ver=(string)v; } //! @global //! Add a directory to search for include files. //! //! This is the same as the command line option @tt{-I@}. //! //! @note //! Note that the added directory will only be searched when using //! < > to quote the included file. //! //! @seealso //! @[remove_include_path()] //! void add_include_path(string tmp) { tmp=normalize_path(combine_path_with_cwd(tmp)); pike_include_path-=({tmp}); pike_include_path=({tmp})+pike_include_path; } //! @global //! Remove a directory to search for include files. //! //! This function performs the reverse operation of @[add_include_path()]. //! //! @seealso //! @[add_include_path()] //! void remove_include_path(string tmp) { tmp=normalize_path(combine_path_with_cwd(tmp)); pike_include_path-=({tmp}); } //! @global //! Add a directory to search for modules. //! //! This is the same as the command line option @tt{-M@}. //! //! @seealso //! @[remove_module_path()] //! void add_module_path(string tmp) { tmp=normalize_path(combine_path_with_cwd(tmp)); pike_module_path-=({tmp}); pike_module_path=({tmp})+pike_module_path; } //! @global //! Remove a directory to search for modules. //! //! This function performs the reverse operation of @[add_module_path()]. //! //! @seealso //! @[add_module_path()] //! void remove_module_path(string tmp) { tmp=normalize_path(combine_path_with_cwd(tmp)); pike_module_path-=({tmp}); } //! @global //! Add a directory to search for programs. //! //! This is the same as the command line option @tt{-P@}. //! //! @seealso //! @[remove_program_path()] //! void add_program_path(string tmp) { tmp=normalize_path(combine_path_with_cwd(tmp)); pike_program_path-=({tmp}); pike_program_path=({tmp})+pike_program_path; } //! @global //! Remove a directory to search for programs. //! //! This function performs the reverse operation of @[add_program_path()]. //! //! @seealso //! @[add_program_path()] //! void remove_program_path(string tmp) { tmp=normalize_path(combine_path_with_cwd(tmp)); pike_program_path-=({tmp}); } mapping get_default_module() { /* This is an ugly kluge to avoid an infinite recursion. * The infinite recursion occurs because this function is * called for every file when the compat_major/minor is set. * This kluge could cause problems with threads if the * compiler was threaded. -Hubbe */ int saved_compat_minor=compat_minor; int saved_compat_major=compat_major; compat_minor=-1; compat_major=-1; mixed x; mixed err =catch { if(x=resolv("__default.all_constants")) x=x(); }; compat_major=saved_compat_major; compat_minor=saved_compat_minor; if(err) throw(err); return x; } mixed resolv_base(string identifier, string|void current_file, object|void current_handler) { array(mixed) tmp = ({}); string dir=current_file ? dirname(current_file) : "/"; foreach(pike_module_path, string path) { string file=combine_path(dir, path, identifier); if(mixed ret=findmodule(file, current_handler)) { if ((objectp(ret)) && (ret->is_resolv_dirnode || ret->is_resolv_joinnode)) { if (mixed new_ret = ret->_module_value) { ret = new_ret; } tmp += ({ ret }); } else { if (mixed new_ret = ret->_module_value) { ret = new_ret; } if (!sizeof(tmp)) { return ret; } else { // Ignore werror(sprintf("Ignoring file %O: %t for identifier %O\n", file, ret, identifier)); continue; } } } } if (sizeof(tmp)) { if (sizeof(tmp) == 1) { return(tmp[0]); } return joinnode(tmp); } return UNDEFINED; } mapping resolv_cache = set_weak_flag( ([]), 1 ); mixed resolv(string identifier, string|void current_file, object|void current_handler) { // FIXME: Support having the cache in the handler? if( no_resolv[ identifier ] ) return UNDEFINED; mixed ret; string id=identifier+":"+(current_file ? dirname(current_file) : "-"); if( !zero_type (ret = resolv_cache[id]) ) return ret == ZERO_TYPE ? UNDEFINED : resolv_cache[id]; array(string) tmp=identifier/"."; ret=resolv_base(tmp[0], current_file, current_handler); foreach(tmp[1..],string index) ret=ret[index]; resolv_cache[id] = zero_type (ret) ? ZERO_TYPE : ret; return ret; } /* This function is called whenever an #include directive is encountered * it receives the argument for #include and should return the file name * of the file to include */ string handle_include(string f, string current_file, int local_include) { array(string) tmp; string path; if(local_include) { tmp=EXPLODE_PATH(current_file); tmp[-1]=f; path=combine_path_with_cwd(tmp*"/"); } else { foreach(pike_include_path, path) { path=combine_path(path,f); if(master_file_stat(fakeroot(path))) break; else path=0; } } return path; } string read_include(string f) { AUTORELOAD_CHECK_FILE(f) return master_read_file(f); } string _sprintf() { return sprintf("CompatResolver(%s)",ver); } } inherit CompatResolver; // These are useful if you want to start other Pike processes // with the same options as this one was started with. string _pike_file_name; string _master_file_name; //flag. Gets set to 1 if we're in async-mode (script->main() returned <0) private int _async=0; int asyncp() { return _async; } // The backend_thread() function is useful to determine if you are // the backend thread - important when doing async/sync protocols #if constant(thread_create) // this must be done in __init if someone inherits the master static object _backend_thread=this_thread(); object backend_thread() { return _backend_thread; } #endif /* This function is called when all the driver is done with all setup * of modules, efuns, tables etc. etc. and is ready to start executing * _real_ programs. It receives the arguments not meant for the driver * and an array containing the environment variables on the same form as * a C program receives them. */ void _main(array(string) orig_argv, array(string) env) { array(string) argv=copy_value(orig_argv); int i,debug,trace; object tmp; string a,b; array q; string postparseaction=0; mixed v; _pike_file_name = orig_argv[0]; #if constant(thread_create) _backend_thread = this_thread(); #endif foreach(env,a) { if(sscanf(a,"%s=%s",a,b)) { if(a=="") // Special hack for NT { sscanf(b,"%s=%s",a,b); a="="+a; } environment[a]=b; }else{ werror("Broken environment var %s\n",a); } } #ifndef NOT_INSTALLED q=(getenv("PIKE_INCLUDE_PATH")||"")/":"-({""}); for(i=sizeof(q)-1;i>=0;i--) add_include_path(q[i]); q=(getenv("PIKE_PROGRAM_PATH")||"")/":"-({""}); for(i=sizeof(q)-1;i>=0;i--) add_program_path(q[i]); q=(getenv("PIKE_MODULE_PATH")||"")/":"-({""}); for(i=sizeof(q)-1;i>=0;i--) add_module_path(q[i]); #endif if(sizeof(argv)>1 && sizeof(argv[1]) && argv[1][0]=='-') { tmp=resolv("Getopt"); if (!tmp) { werror("master.pike: Couldn't resolv Getopt module.\n" "Is your PIKE_MODULE_PATH environment variable set correctly?\n"); exit(1); } q=tmp->find_all_options(argv,({ ({"compat_version",tmp->HAS_ARG,({"-V","--compat"})}), ({"version",tmp->NO_ARG,({"-v","--version"})}), ({"help",tmp->NO_ARG,({"-h","--help"})}), ({"features",tmp->NO_ARG,({"--features"})}), ({"info",tmp->NO_ARG,({"--info"})}), ({"execute",tmp->HAS_ARG,({"-e","--execute"})}), ({"debug_without",tmp->HAS_ARG,({"--debug-without"})}), ({"preprocess",tmp->HAS_ARG,({"-E","--preprocess"})}), ({"modpath",tmp->HAS_ARG,({"-M","--module-path"})}), ({"ipath",tmp->HAS_ARG,({"-I","--include-path"})}), ({"ppath",tmp->HAS_ARG,({"-P","--program-path"})}), ({"showpaths",tmp->NO_ARG,"--show-paths"}), ({"warnings",tmp->NO_ARG,({"-w","--warnings"})}), ({"nowarnings",tmp->NO_ARG,({"-W", "--woff", "--no-warnings"})}), #ifdef PIKE_AUTORELOAD ({"autoreload",tmp->NO_ARG,({"--autoreload"})}), #endif ({"master",tmp->HAS_ARG,"-m"}), ({"compiler_trace",tmp->NO_ARG,"--compiler-trace"}), ({"assembler_debug",tmp->MAY_HAVE_ARG,"--assembler-debug"}), ({"optimizer_debug",tmp->MAY_HAVE_ARG,"--optimizer-debug"}), ({"debug",tmp->MAY_HAVE_ARG,"--debug",0,1}), ({"trace",tmp->MAY_HAVE_ARG,"--trace",0,1}), ({"ignore",tmp->MAY_HAVE_ARG,"-Dqdatplr",0,1}), ({"ignore",tmp->HAS_ARG,"-s"}), }), 1); /* Parse -M and -I backwards */ for(i=sizeof(q)-1;i>=0;i--) { switch(q[i][0]) { case "compat_version": sscanf(q[i][1],"%d.%d",compat_major,compat_minor); break; #ifdef PIKE_AUTORELOAD case "autoreload": autoreload_on++; #endif case "debug_without": foreach( q[i][1]/",", string feature ) { switch( feature ) { case "ttf": no_resolv[ "_Image_TTF" ] = 1; break; case "zlib": no_resolv[ "Gz" ] = 1; break; case "unisys": no_resolv[ "_Image_GIF" ] = 1; no_resolv[ "_Image_TIFF" ] = 1; break; case "threads": // not really 100% correct, but good enough for most things. no_resolv[ "Thread" ] = 1; add_constant( "thread_create", ([])[0] ); break; default: no_resolv[ feature ] = 1; break; } } break; case "debug": debug+=(int)q[i][1]; break; #if constant(_compiler_trace) case "compiler_trace": _compiler_trace(1); break; #endif /* constant(_compiler_trace) */ #if constant(_assembler_debug) case "assembler_debug": _assembler_debug((int)q[i][1]); break; #endif /* constant(_assembler_debug) */ #if constant(_optimizer_debug) case "optimizer_debug": _optimizer_debug((int)q[i][1]); break; #endif /* constant(_optimizer_debug) */ case "trace": trace+=(int)q[i][1]; break; case "modpath": add_module_path(q[i][1]); break; case "ipath": add_include_path(q[i][1]); break; case "ppath": add_program_path(q[i][1]); break; case "warnings": want_warnings++; break; case "no-warnings": want_warnings--; break; case "master": _master_file_name = q[i][1]; break; } } foreach(q, array opts) { switch(opts[0]) { case "version": werror(version() + " Copyright © 1994-2001 Roxen Internet Software\n" "Pike comes with ABSOLUTELY NO WARRANTY; This is free software and you are\n" "welcome to redistribute it under certain conditions; Read the files\n" "COPYING and DISCLAIMER in the Pike distribution for more details.\n"); exit(0); case "help": werror("Usage: pike [-driver options] script [script arguments]\n" "Driver options include:\n" " -I --include-path=: Add to the include path\n" " -M --module-path= : Add to the module path\n" " -P --program-path=: Add to the program path\n" " -e --execute=<cmd> : Run the given command instead of a script.\n" " -h --help : see this message\n" " -v --version : See what version of pike you have.\n" " --features : List Pike features.\n" " --info : List information about the Pike build and setup.\n" " --show-paths : See the paths and master that pike uses.\n" " -s# : Set stack size\n" " -m <file> : Use <file> as master object.\n" " -d -d# : Increase debug (# is how much)\n" " -t -t# : Increase trace level\n" ); exit(0); case "features": postparseaction="features"; break; case "info": postparseaction="info"; break; case "showpaths": werror("Include path : " + pike_include_path*"\n" " " + "\n" "Module path : " + pike_module_path*"\n" " " + "\n" "Program path : " + pike_program_path*"\n" " " + "\n" "Master file : " + (_master_file_name || __FILE__) + "\n"); exit(0); case "execute": random_seed(time() + (getpid() * 0x11111111)); if(trace) predef::trace(trace); compile_string("mixed create(){"+opts[1]+";}")(); exit(0); case "preprocess": _static_modules.files()->_stdout->write(cpp(master_read_file(opts[1]), opts[1])); exit(0); } } argv = tmp->get_args(argv,1); } switch (postparseaction) { case "features": v = resolv("Tools"); if (v) v = v["Install"]; if (v) v = v["features"]; if (!v) { werror("Could not resolv Tools.Install.features\n"); exit(1); } _static_modules.files()->_stdout->write(v()*"\n"+"\n"); exit(0); case "info": function w=_static_modules.files()->_stdout->write; w("Software......Pike\n" "Version......."+version()+"\n" "WWW...........http://pike.roxen.com/\n" "\n"); w("pike binary..."+_pike_file_name+"\n"); w("master.pike..."+__FILE__+"\n"); w("Module path..." + pike_module_path*"\n" " " + "\n" "Include path.." + pike_include_path*"\n" " " + "\n" "Program path.." + pike_program_path*"\n" " " + "\n" "\n"); v = resolv("Tools"); if (v) v = v["Install"]; if (v) v = v["features"]; if (!v) { werror("Could not resolv Tools.Install.features\n"); exit(1); } w("Features......"+v()*"\n "+"\n"); exit(0); } random_seed(time() + (getpid() * 0x11111111)); if(sizeof(argv)==1) { /* Attempt to resolv Tools.Hilfe.StdinHilfe */ tmp = resolv("Tools"); if (!tmp) { werror("Couldn't find Tools.\n"); exit(1); } tmp = tmp["Hilfe"]; if (!tmp) { werror("Couldn't find Hilfe.\n"); exit(1); } tmp->StdinHilfe(); exit(0); } else { argv=argv[1..]; } argv[0]=combine_path_with_cwd(argv[0]); program prog; mixed err = catch { prog=(program)argv[0]; }; if (err) { werror(sprintf("Pike: Failed to compile script:\n" "%s\n", stringp(err[0])?err[0]:describe_backtrace(err))); exit(1); } // FIXME: Isn't the following code dead? if(!prog) { werror("Pike: Couldn't find script to execute\n(%O)\n",argv[0]); exit(1); } object script=prog(); #if constant(_debug) if(debug) _debug(debug); #endif if(!script->main) { werror("Error: "+argv[0]+" has no main().\n"); exit(1); } if(trace) predef::trace(trace); i=script->main(sizeof(argv),argv,env); if(i >=0) exit(i); _async=1; while(1) { mixed err=catch { while(1) _static_modules.Builtin.__backend(3600.0); }; master()->handle_error(err); } } #if constant(thread_local) object inhibit_compile_errors = thread_local(); void set_inhibit_compile_errors(mixed f) { inhibit_compile_errors->set(f); } mixed get_inhibit_compile_errors() { return inhibit_compile_errors->get(); } #else /* !constant(thread_local) */ mixed inhibit_compile_errors; void set_inhibit_compile_errors(mixed f) { inhibit_compile_errors=f; } mixed get_inhibit_compile_errors() { return inhibit_compile_errors; } #endif /* constant(thread_local) */ string trim_file_name(string s) { if(getenv("LONG_PIKE_ERRORS")) return s; if(getenv("SHORT_PIKE_ERRORS")) return BASENAME(s); /* getcwd() can fail, but since this is called from handle_error(), * we don't want to fail, so we don't care about that. */ catch { string cwd=getcwd(); if (sizeof(cwd) && (cwd[-1] != '/')) { cwd += "/"; } if(s[..sizeof(cwd)-1]==cwd) return s[sizeof(cwd)..]; }; return s; } /* * This function is called whenever a compiling error occurs. * Nothing strange about it. * Note that previous_object cannot be trusted in ths function, because * the compiler calls this function. */ void compile_error(string file,int line,string err) { mixed val; if(! (val = get_inhibit_compile_errors() )) { werror(sprintf("%s:%s:%s\n",trim_file_name(file), line?(string)line:"-",err)); } else if(objectp(val) || programp(val) || functionp(val)) { if (objectp(val) && val->compile_error) { val->compile_error(file, line, err); } else { val(file, line, err); } } } /* * This function is called whenever a compiling warning occurs. * Nothing strange about it. * Note that previous_object cannot be trusted in ths function, because * the compiler calls this function. */ void compile_warning(string file,int line,string err) { mixed val; if(!(val = get_inhibit_compile_errors() )) { if(want_warnings) werror(sprintf("%s:%s: Warning: %s\n",trim_file_name(file), line?(string)line:"-",err)); } else if (objectp(val) && val->compile_warning) { val->compile_warning(file, line, err); } } /* * Called for every runtime warning. The first argument identifies * where the warning comes from, the second identifies the specific * message, and the rest depends on that. See code below for currently * implemented warnings. */ void runtime_warning (string where, string what, mixed... args) { if (want_warnings) switch (where + "." + what) { case "gc.bad_cycle": // args[0] is an array containing the objects in the cycle // which aren't destructed and have destroy() functions. werror ("GC warning: Garbing cycle where destroy() will be called " "in arbitrary order:\n%{ %s\n%}", map (args[0], describe_object)); break; default: werror ("%s warning: %s %O\n", capitalize (where), what, args); } } static mixed _charset_mod; /* This function is called by cpp() when it wants to do * character code conversion. */ string decode_charset(string data, string charset) { // werror(sprintf("decode_charset(%O, %O)\n", data, charset)); if (!_charset_mod) { mixed mod = resolv("Locale"); _charset_mod = mod && mod["Charset"]; if (!_charset_mod) { compile_warning("-", 0, "No Locale.Charset module!"); return 0; } } object decoder; catch { decoder = _charset_mod->decoder(charset); }; if (!decoder) { compile_warning("-", 0, sprintf("Unknown charset %O!", charset)); return 0; } return decoder->feed(data)->drain(); } class Describer { int clipped=0; int canclip=0; mapping(mixed:int|string) ident = ([]); int identcount = 0; void identify_parts (mixed stuff) { // Use an array as stack here instead of recursing directly; we // might be pressed for stack space if the backtrace being // described is a stack overflow. array identify_stack = ({stuff}); while (sizeof (identify_stack)) { stuff = identify_stack[-1]; identify_stack = identify_stack[..sizeof (identify_stack) - 2]; if (arrayp (stuff)) { if (!ident[stuff]++) identify_stack += stuff; } else if (multisetp (stuff)) { if (!ident[stuff]++) identify_stack += indices (stuff); } else if (mappingp (stuff)) { if (!ident[stuff]++) identify_stack += indices (stuff) + values (stuff); } else if (objectp (stuff) || functionp (stuff) || programp (stuff)) ident[stuff]++; } } string describe_string (string m, int maxlen) { canclip++; if(sizeof(m) < maxlen) { string t = sprintf("%O", m); if (sizeof(t) < (maxlen + 2)) { return t; } t = 0; } clipped++; if(maxlen>10) { return sprintf("%O+[%d]",m[..maxlen-5],sizeof(m)-(maxlen-5)); }else{ return "string["+sizeof(m)+"]"; } } string describe_array (array m, int maxlen) { if(!sizeof(m)) return "({})"; else { if(maxlen<5) { clipped++; return "array["+sizeof(m)+"]"; } else { canclip++; return "({" + describe_comma_list(m,maxlen-2) +"})"; } } } string describe_mapping (mapping m, int maxlen) { if(!sizeof(m)) return "([])"; else return "mapping["+sizeof(m)+"]"; } string describe_multiset (multiset m, int maxlen) { if(!sizeof(m)) return "(<>)"; else return "multiset["+sizeof(m)+"]"; } string describe (mixed m, int maxlen) { if (stringp (ident[m])) return ident[m]; else if (intp (ident[m]) && ident[m] > 1) ident[m] = "@" + identcount++; string res, typ; if (catch (typ=sprintf("%t",m))) typ = "object"; // Object with a broken _sprintf(), probably. switch(typ) { case "int": case "float": return (string)m; case "string": return describe_string (m, maxlen); case "array": res = describe_array (m, maxlen); break; case "mapping": res = describe_mapping (m, maxlen); break; case "multiset": res = describe_multiset (m, maxlen); break; case "function": if (string tmp=describe_function(m)) res = tmp; else res = typ; break; case "program": if(string tmp=describe_program(m)) res = tmp; else res = typ; break; default: if (objectp(m)) if(string tmp=describe_object(m)) { res = tmp; break; } res = typ; } if (stringp (ident[m])) return ident[m] + "=" + res; return res; } string describe_comma_list(array x, int maxlen) { string ret=""; if(!sizeof(x)) return ""; if(maxlen<0) return ",,,"+sizeof(x); int clip=min(maxlen/2,sizeof(x)); int len=maxlen; int done=0; // int loopcount=0; while(1) { // if(loopcount>10000) werror("len=%d\n",len); array(string) z=allocate(clip); array(int) isclipped=allocate(clip); array(int) clippable=allocate(clip); for(int e=0;e<clip;e++) { clipped=0; canclip=0; z[e]=describe(x[e],len); isclipped[e]=clipped; clippable[e]=canclip; } while(1) { // if(loopcount>10000) werror("clip=%d maxlen=%d\n",clip,maxlen); string ret = z[..clip-1]*","; // if(loopcount>10000) werror("sizeof(ret)=%d z=%O isclipped=%O done=%d\n",sizeof(ret),z[..clip-1],isclipped[..clip-1],done); if(done || sizeof(ret)<=maxlen+1) { int tmp=sizeof(x)-clip-1; // if(loopcount>10000) werror("CLIPPED::::: %O\n",isclipped); clipped=`+(0,@isclipped); if(tmp>=0) { clipped++; ret+=",,,"+tmp; } canclip++; return ret; } int last_newlen=len; int newlen; int clipsuggest; while(1) { // if(loopcount++ > 20000) return ""; // if(!(loopcount & 0xfff)) werror("GNORK\n"); int smallsize=0; int num_large=0; clipsuggest=0; for(int e=0;e<clip;e++) { // if(loopcount>10000) werror("sizeof(z[%d])=%d len=%d\n",e,sizeof(z[e]),len); if((sizeof(z[e])>=last_newlen || isclipped[e]) && clippable[e]) num_large++; else smallsize+=sizeof(z[e]); if(num_large * 15 + smallsize < maxlen) clipsuggest=e+1; } // if(loopcount>10000) werror("num_large=%d maxlen=%d smallsize=%d clippsuggest=%d\n",num_large,maxlen,smallsize,clipsuggest); newlen=num_large ? (maxlen-smallsize)/num_large : 0; // if(loopcount>10000) werror("newlen=%d\n",newlen); if(newlen<8 || newlen >= last_newlen) break; last_newlen=newlen; // if(loopcount>10000) werror("len decreased, retrying.\n"); } if(newlen < 8 && clip) { clip-= (clip/4) || 1; if(clip > clipsuggest) clip=clipsuggest; // if(loopcount>10000) werror("clip decreased, retrying.\n"); }else{ len=newlen; done++; break; } } } return ret; } } string describe_object(object o) { string s; if(!o) return 0; if (!catch (s = sprintf("%O",o)) && s != "object") return s; if(( s=describe_program(object_program(o)) )) return s+"()"; return 0; } string describe_program(program p) { string s; if(!p) return 0; if(s=search(programs,p)) { if(sscanf(reverse(s),"%s.%s",string ext,string rest) && ext=="domp") return EXPLODE_PATH(reverse(rest))[-1]; return trim_file_name(s); } if(mixed tmp=function_object(p)) { if(objectp(tmp)) { if(s=describe_program(object_program(tmp))) return s+"."+function_name(p); } if(programp(tmp)) { if(s=describe_program(tmp)) return s+"."+function_name(p); } } if(s=_static_modules.Builtin()->program_defined(p)) return EXPLODE_PATH(s)[-1]; return 0; } string describe_function (function f) { if (!f) return 0; string name; if(string s=search(programs,f)) { if(sscanf(reverse(s),"%s.%s",string ext,string rest) && ext=="domp") name = EXPLODE_PATH(reverse(rest))[-1]; else name = trim_file_name(s); } else if (catch (name = function_name (f))) name = "function"; object o = function_object(f); if(objectp (o)) { // Check if it's an object in a way that (hopefully) doesn't // call any functions in it (neither `== nor `!). string s; if (!catch (s = sprintf("%O",o)) && s != "object") return s+"->"+name; } return name; } /* It is possible that this should be a real efun, * it is currently used by handle_error to convert a backtrace to a * readable message. */ //! @global //! Returns a string containing a readable message that describes where //! the backtrace was made. //! //! The argument @[trace] should normally be the return value from a call //! to @[backtrace()], or a caught error. //! //! @seealso //! @[backtrace()], @[describe_error()], @[catch()], @[throw()] //! string describe_backtrace(mixed trace, void|int linewidth) { int e; string ret; int backtrace_len=((int)getenv("PIKE_BACKTRACE_LEN")) || bt_max_string_len; if(!linewidth) { linewidth=99999; catch { linewidth=_static_modules.files()->_stdin->tcgetattr()->columns; }; if(linewidth<10) linewidth=99999; } if((arrayp(trace) && sizeof(trace)==2 && stringp(trace[0])) || (objectp(trace) && trace->is_generic_error)) { if (catch { ret = trace[0] || "No error message!\n"; trace = trace[1]; }) { return "Error indexing backtrace!\n"; } }else{ ret=""; } if(!arrayp(trace)) { ret+="No backtrace.\n"; }else{ Describer desc = Describer(); desc->identify_parts (trace); int end = 0; if( (sizeof(trace)>1) && arrayp(trace[0]) && (sizeof(trace[0]) > 2) && (trace[0][2] == _main)) end = 1; mapping(string:int) prev_pos = ([]); array(string) frames = ({}); int loop_start = 0, loop_next, loops; for(e = sizeof(trace)-1; e>=end; e--) { mixed tmp; string row; if (mixed err=catch { tmp = trace[e]; if(stringp(tmp)) { row=tmp; } else if(arrayp(tmp)) { string pos; if(sizeof(tmp)>=2 && stringp(tmp[0])) { if (intp(tmp[1])) { string exact_pos = tmp[0] + ":" + tmp[1]; int dup_frame; if (!zero_type (dup_frame = prev_pos[exact_pos])) { dup_frame -= sizeof (frames); if (!loop_start) { loop_start = dup_frame; loop_next = dup_frame + 1; loops = 0; continue; } else { int new_loop = 0; if (!loop_next) loop_next = loop_start, new_loop = 1; if (dup_frame == loop_next++) { loops += new_loop; continue; } } } prev_pos[exact_pos] = sizeof (frames); pos=trim_file_name(tmp[0])+":"+tmp[1]; } else { pos = sprintf("%s:Bad line %t", trim_file_name(tmp[0]), tmp[1]); } }else{ mixed desc="Unknown program"; if(sizeof(tmp)>=3 && functionp(tmp[2])) { catch { if(mixed tmp=function_object(tmp[2])) if(tmp=object_program(tmp)) if(tmp=describe_program(tmp)) desc=tmp; }; } pos=desc; } if (loop_start) { array(string) tail; if (!loop_next) tail = ({}), loops++; else tail = frames[loop_start + sizeof (frames) .. loop_next - 1 + sizeof (frames)]; if (loops) frames += ({sprintf ("... last %d frames above repeated %d times ...\n", -loop_start, loops)}); frames += tail; prev_pos = ([]); loop_start = 0; } string data; if(sizeof(tmp)>=3) { if(functionp(tmp[2])) { data = describe_function (tmp[2]); } else if (stringp(tmp[2])) { data= tmp[2]; } else data ="unknown function"; data+="("+ desc->describe_comma_list(tmp[3..], backtrace_len)+ ")"; if(sizeof(pos)+sizeof(data) < linewidth-4) { row=sprintf("%s: %s",pos,data); }else{ row=sprintf("%s:\n%s",pos,sprintf(" %*-/s",linewidth-6,data)); } } else { row = pos; } } else { if (tmp) { if (catch (row = sprintf("%O", tmp))) row = describe_program(object_program(tmp)) + " with broken _sprintf()"; } else { row = "Destructed object"; } } }) { row = sprintf("Error indexing backtrace line %d: %s (%O)!", e, err[0], err[1]); } frames += ({row + "\n"}); } if (loop_start) { // Want tail to contain a full loop rather than being empty; it // looks odd when the repeat message ends the backtrace. array(string) tail = frames[loop_start + sizeof (frames) .. loop_next - 1 + sizeof (frames)]; if (loops) frames += ({sprintf ("... last %d frames above repeated %d times ...\n", -loop_start, loops)}); frames += tail; } ret += frames * ""; } return ret || "No backtrace!\n";; } //! @global //! Returns only the error message from a backtrace. //! //! If there is no error message in the backtrace, a fallback message //! will be returned. //! //! @seealso //! @[backtrace()], @[describe_backtrace()] //! string describe_error (mixed trace) { if((arrayp(trace) && sizeof(trace)==2 && stringp(trace[0])) || (objectp(trace) && trace->is_generic_error)) { if (catch { return trace[0] || "No error message.\n"; }) { return "Error indexing backtrace!\n"; } } return sprintf ("Backtrace is of unknown type %t!\n", trace); } class Codec { mapping f=all_constants(); string nameof(mixed x) { if(mixed tmp=search(f,x)) return "efun:"+tmp; if (programp(x)) { if(mixed tmp=search(programs,x)) return tmp; if(mixed tmp=search(values(_static_modules), x)) return "_static_modules."+(indices(_static_modules)[tmp]); } else if (objectp(x)) if(mixed tmp=search(objects,x)) if(tmp=search(programs,tmp)) return tmp; return ([])[0]; } function functionof(string x) { if(sscanf(x,"efun:%s",x)) return f[x]; if(sscanf(x,"resolv:%s",x)) return resolv(x); return 0; } object objectof(string x) { if(sscanf(x,"efun:%s",x)) return f[x]; if(sscanf(x,"resolv:%s",x)) return resolv(x); return cast_to_object(x,0); } program programof(string x) { if(sscanf(x,"efun:%s",x)) return f[x]; if(sscanf(x,"resolv:%s",x)) return resolv(x); return cast_to_program(x,0); } mixed encode_object(object x) { if(x->_encode) return x->_encode(); error("Cannot encode objects yet.\n"); } mixed decode_object(object o, mixed data) { o->_decode(data); } } class Version { int major; int minor; void create(int maj, int min) { major=maj; minor=min; } #define CMP(X) ((major - (X)->major) || (minor - (X)->minor)) int `<(Version v) { return CMP(v) < 0; } int `>(Version v) { return CMP(v) > 0; } int `==(Version v) { return CMP(v)== 0; } int _hash() { return major * 4711 + minor ; } string _sprintf() { return sprintf("%d.%d",major,minor); } mixed cast(string type) { switch(type) { case "string": return sprintf("%d.%d",major,minor); } } } Version currentversion=Version(__MAJOR__,__MINOR__); mapping(Version:CompatResolver) compat_handler_cache=set_weak_flag( ([]), 1); CompatResolver get_compilation_handler(int major, int minor) { CompatResolver ret; Version v=Version(major,minor); if(v > currentversion) { /* do we want to make an error if major.minor > __MAJOR__.__MINOR ? */ return 0; } if(!zero_type(ret=compat_handler_cache[v])) return ret; array(Version) available=({}); #if "¤share_prefix¤"[0]!='¤' foreach(get_dir("¤share_prefix¤"), string ver) { if(sscanf(ver,"%d.%d",int maj, int min)) { Version x=Version(maj, min) ; if(x >= v) available|=({ x }); } } #endif #if "¤lib_prefix¤"[0]!='¤' foreach(get_dir("¤lib_prefix¤"), string ver) { if(sscanf(ver,"%d.%d",int maj, int min)) { Version x=Version(maj, min) ; if(x >= v) available|=({ x }); } } #endif sort(available); #ifndef RESOLVER_HACK /* We need to define RESOLVER_HACK when we add * version-specific stuff in the CompatResolver. * As long as all the compatibility is done in the * module dierctories, RESOLVER_HACK can be undefined */ /* No compat needed */ if(!sizeof(available)) { compat_handler_cache[v]=0; return 0; } /* Same as available[0] */ if(ret=compat_handler_cache[available[0]]) return compat_handler_cache[v]=ret; #endif ret=CompatResolver(v); /* Add default paths */ ret->pike_module_path=pike_module_path; ret->pike_include_path=pike_include_path; foreach(reverse(available), Version tmp) { string base; #if "¤lib_prefix¤"[0]!='¤' base=combine_path("¤lib_prefix¤",sprintf("%s",tmp)); ret->add_module_path(combine_path(base,"modules")); ret->add_include_path(combine_path(base,"include")); #endif #if "¤share_prefix¤"[0]!='¤' base=combine_path("¤share_prefix¤",sprintf("%s",tmp)); ret->add_module_path(combine_path(base,"modules")); ret->add_include_path(combine_path(base,"include")); #endif } if( v <= Version(0,6)) ret->pike_module_path+=({"."}); compat_handler_cache[v] = ret; #ifndef RESOLVER_HACK compat_handler_cache[available[0]] = ret; /* may be equal to 'v' */ #endif return ret; } string _sprintf() { return "master()"; }

pike.git/ lib/ master.pike.in > fc398bba855602f9fa01235ab835c9bd4635b459 [Annotate]