pike.git/lib/master.pike.in:b2e923e3af6d0fae213d7574dd6d29e96dd6e6ab

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5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642 5643 5644 5645 5646 5647 5648 5649 5650 // -*- Pike -*- // // Master Control Program for Pike. // // This file is part of Pike. For copyright information see COPYRIGHT. // Pike is distributed under GPL, LGPL and MPL. See the file COPYING // for more information. // #pike __REAL_VERSION__ //#pragma strict_types //! @appears predef::MasterObject //! //! Master control program for Pike. //! //! @seealso //! @[predef::master()], @[predef::replace_master()] // --- Some configurable parameters #define PIKE_AUTORELOAD #define GETCWD_CACHE //#define FILE_STAT_CACHE // This define is searched and replaced by bin/install.pike. #undef PIKE_MODULE_RELOC #ifndef PIKE_WARNINGS #define PIKE_WARNINGS 1 #endif /* PIKE_WARNINGS */ // --- Global constants and variables // 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; //! @decl constant bt_max_string_len = 200 //! This constant contains the maximum length of a function entry in a //! backtrace. Defaults to 200 if no BT_MAX_STRING_LEN define has been //! given. // Enables the out of date warning in low_findprog(). #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; // FIXME: PATH_SEPARATOR and UPDIR should probably be exported, // or at least some functions that use them should be. // cf Tools.Shoot.runpike. // /grubba 2004-04-11 #if defined(__NT__) || defined(__amigaos__) || defined(__OS2__) #define PATH_SEPARATOR ";" #else #define PATH_SEPARATOR ":" #endif #ifdef __amigaos__ #define UPDIR "/" #else #define UPDIR "../" #endif //! @decl constant out_of_date_warning = 1 //! Should Pike complain about out of date compiled files. //! 1 means yes and 0 means no. Controlled by the OUT_OF_DATE_WARNING //! define. //! If not zero compilation warnings will be written out on stderr. int want_warnings = PIKE_WARNINGS; //! int compat_major=-1; //! int compat_minor=-1; //! int show_if_constant_errors = 0; int is_pike_master = 0; // This integer variable should exist in any object that aspires to be // the master. It gets set to 1 when the master is installed, and is // therefore set in any object that is or has been the master. That // makes the Encoder class encode references to the master and all // ex-masters as references to the current master object. mapping(string:object) fs_map = ([]); object root_fs; // --- Functions begin here. // Have to access some stuff without going through the resolver. private object(_static_modules.Builtin) Builtin = _static_modules.Builtin(); private constant Files = _static_modules._Stdio; #define Stat Files.Stat #define capitalize(X) (upper_case((X)[..0])+(X)[1..]) #define trim(X) (Builtin.string_trim (X)) private function write = Files()->_stdout->write; private function werror = Files()->_stderr->write; // Tell Pike.count_memory this is global. constant pike_cycle_depth = 0; //#define RECUR_COMPILE_DEBUG // More brief than RESOLV_DEBUG. Usually enough to find those pesky // "Recursive module dependency" bugs. :P #if defined (RESOLV_DEBUG) || defined (RECUR_COMPILE_DEBUG) #if constant (thread_local) protected object _msg_depth = thread_local(); // NOTE: May be used before __INIT has completed. #define GET_MSG_DEPTH (_msg_depth && _msg_depth->get()) #define INC_MSG_DEPTH() (_msg_depth && _msg_depth->set (_msg_depth->get() + 1)) #define DEC_MSG_DEPTH() (_msg_depth && _msg_depth->set (_msg_depth->get() - 1)) #else protected int _msg_depth; #define GET_MSG_DEPTH _msg_depth #define INC_MSG_DEPTH() (++_msg_depth) #define DEC_MSG_DEPTH() (--_msg_depth) #endif #endif #ifdef RESOLV_DEBUG #define GET_RESOLV_MSG_DEPTH GET_MSG_DEPTH #define INC_RESOLV_MSG_DEPTH() INC_MSG_DEPTH() #define DEC_RESOLV_MSG_DEPTH() DEC_MSG_DEPTH() void resolv_debug (sprintf_format fmt, sprintf_args... args) { string pad = " " * GET_RESOLV_MSG_DEPTH; if (sizeof (args)) fmt = sprintf (fmt, @args); if (fmt[-1] == '\n') fmt = pad + replace (fmt[..<1], "\n", "\n" + pad) + "\n"; else fmt = pad + replace (fmt, "\n", "\n" + pad); if (!werror) werror = Files()->_stderr->write; werror (fmt); } #else // !RESOLV_DEBUG #define INC_RESOLV_MSG_DEPTH() 0 #define DEC_RESOLV_MSG_DEPTH() 0 #define resolv_debug(X...) do {} while (0) #endif // !RESOLV_DEBUG constant no_value = (<>); constant NoValue = typeof (no_value); // Some API compatibility stuff. //! Pike 7.8 master compatibility interface. //! //! Most of the interface is implemented via mixin, //! or overloading by more recent masters. //! //! This interface is used for compatibility with //! Pike 7.8. //! //! @deprecated predef::MasterObject //! //! @seealso //! @[get_compat_master()], @[master()], @[predef::MasterObject] protected class Pike_7_8_master { extern array(string) pike_include_path; extern array(string) pike_module_path; extern array(string) pike_program_path; #ifdef GETCWD_CACHE extern string current_path; int cd(string s); string getcwd(); #endif string combine_path_with_cwd(string path); #ifdef FILE_STAT_CACHE extern int invalidate_time; extern mapping(string:multiset(string)) dir_cache; #endif string|mapping(string:string) getenv(string|void s); void putenv(string|void varname, string|void value); void add_include_path(string tmp); void remove_include_path(string tmp); void add_module_path(string tmp); void remove_module_path(string tmp); void add_program_path(string tmp); void remove_program_path(string tmp); mapping(string:program|NoValue) programs; extern mapping(program:object) objects; object cast_to_object(string oname, string current_file); class dirnode {}; extern string _master_file_name; void _main(array(string) orig_argv, array(string) env); extern mixed inhibit_compile_errors; void set_inhibit_compile_errors(mixed f); string trim_file_name(string s); void compile_error(string file,int line,string err); string handle_include(string f, string current_file, int local_include); int is_absolute_path(string p); array(string) explode_path(string p); string dirname(string x); string basename(string x); object low_cast_to_object(string oname, string current_file); extern int want_warnings; program compile_string(string data, void|string name); program compile_file(string file); constant master_efuns = ({}); class joinnode {}; extern mapping(string:mixed) fc; extern string _pike_file_name; void compile_warning(string file,int line,string err); string read_include(string f); class Codec {}; constant bt_max_string_len = 1; constant out_of_date_warning = 1; #ifdef PIKE_FAKEROOT extern object o; string fakeroot(string s); #endif #ifdef PIKE_AUTORELOAD extern int autoreload_on; extern int newest; extern mapping(string:int) load_time; #endif string master_read_file(); string normalize_path(string X); array(string) query_precompiled_names(string fname); program cast_to_program(string pname, string current_file, object|void handler); void handle_error(array(mixed)|object trace); program handle_inherit(string pname, string current_file, object|void handler); mixed handle_import(string what, string|void current_file, object|void handler); mixed resolv_base(string identifier, string|void current_file); mixed get_inhibit_compile_errors(); string decode_charset(string data, string charset); string describe_object(object o); string describe_backtrace(array(mixed) trace, void|int linewidth); string describe_error(mixed trace); // --- #ifdef PIKE_MODULE_RELOC string relocate_module(string s); string unrelocate_module(string s); #endif extern int compat_major; extern int compat_minor; Stat master_file_stat(string x); object low_cast_to_object(string oname, string current_file, object|void current_handler); object findmodule(string fullname, object|void handler); extern multiset no_resolv; extern string ver; mapping get_default_module(); void runtime_warning(string where, string what, mixed ... args); protected int clipped; protected int canclip; protected string stupid_describe(mixed m, int maxlen); protected string stupid_describe_comma_list(array x, int maxlen); class Describer {}; string describe_function(function f); class CompatResolver {}; int(0..1) asyncp(); class Version {}; extern object currentversion; extern mapping(object:object) compat_handler_cache; object get_compilation_handler(int major, int minor); // --- #ifdef RESOLV_DEBUG void resolv_debug (sprintf_format fmt, sprintf_args... args); #endif void error(sprintf_format f, sprintf_args ... args); constant no_value = (<>); constant NoValue = typeof (no_value); string programs_reverse_lookup (program prog); program objects_reverse_lookup (object obj); string fc_reverse_lookup (object obj); void unregister(program p); program low_cast_to_program(string pname, string current_file, object|void handler, void|int mkobj); extern string include_prefix; extern mapping(string:string) predefines; void add_predefine (string name, string value); void remove_predefine (string name); mapping get_predefines(); #if constant(thread_create) object backend_thread(); #endif function(string:string) set_trim_file_name_callback(function(string:string) s); int compile_exception (array|object trace); string program_path_to_name ( string path, void|string module_prefix, void|string module_suffix, void|string object_suffix ); string describe_module(object|program mod, array(object)|void ret_obj); string describe_program(program|function p); class Encoder {}; class Decoder {}; extern mapping(string:Codec) codecs; Codec get_codec(string|void fname, int|void mkobj); // The following come from the inherit of Codec. */ // Codec::Encoder: extern mixed encoded; string|array nameof (mixed what, void|array(object) module_object); mixed encode_object(object x); // Codec::Decoder: extern string fname; extern int mkobj; object __register_new_program(program p); object objectof (string|array what); function functionof (string|array what); program programof (string|array what); void decode_object(object o, mixed data); string _sprintf(int t); // --- extern int show_if_constant_errors; extern mapping(string:string) initial_predefines; extern joinnode root_module; extern mapping(object:joinnode) handler_root_modules; extern array(string) system_module_path; extern CompatResolver fallback_resolver; joinnode get_root_module(object|void current_handler); local protected object Pike_7_8_compat_handler; local mixed resolv_or_error(string identifier, string|void current_file, void|object current_handler) { if (!Pike_7_8_compat_handler) { Pike_7_8_compat_handler = global::get_compilation_handler(7, 8); } return Pike_7_8_compat_handler->resolv_or_error(identifier, current_file, current_handler); } local mixed resolv(string identifier, string|void current_file) { if (!Pike_7_8_compat_handler) { Pike_7_8_compat_handler = global::get_compilation_handler(7, 8); } return Pike_7_8_compat_handler->resolv(identifier, current_file); } array get_backtrace (object|array err); object get_compat_master(int major, int minor) { // 0.0 .. 7.8 if (major < 8) return this::this; return get_compat_master(major, minor); } /* No missing symbols. */ } //! Pike 8.0 master compatibility interface. //! //! Most of the interface is implemented via mixin, //! or overloading by more recent masters. //! //! This interface is used for compatibility with //! Pike 8.0. //! //! @deprecated predef::MasterObject //! //! @seealso //! @[get_compat_master()], @[master()], @[predef::MasterObject] protected class Pike_8_0_master { inherit Pike_7_8_master; local protected object Pike_8_0_compat_handler; local mixed resolv_or_error(string identifier, string|void current_file, void|object current_handler) { if (!Pike_8_0_compat_handler) { Pike_8_0_compat_handler = global::get_compilation_handler(8, 0); } return Pike_8_0_compat_handler->resolv_or_error(identifier, current_file, current_handler); } local mixed resolv(string identifier, string|void current_file) { if (!Pike_8_0_compat_handler) { Pike_8_0_compat_handler = global::get_compilation_handler(8, 0); } return Pike_8_0_compat_handler->resolv(identifier, current_file); } object get_compat_master(int major, int minor) { if (major < 8) return Pike_7_8_master::get_compat_master(major, minor); // 8.0 if ((major == 8) && (minor < 1)) return this::this; return get_compat_master(major, minor); } } //! Namespaces for compat masters. //! //! This inherit is used to provide compatibility namespaces //! for @[get_compat_master()]. //! //! @seealso //! @[get_compat_master()] protected inherit Pike_8_0_master; //! @appears error //! Throws an error. A more readable version of the code //! @expr{throw( ({ sprintf(f, @@args), backtrace() }) )@}. void error(sprintf_format f, sprintf_args ... args) { if (sizeof(args)) f = sprintf(f, @args); throw( ({ f, backtrace()[..<1] }) ); } // FIXME: Should the pikeroot-things be private? #ifdef PIKE_FAKEROOT object o; string fakeroot(string s) { string tmp1=combine_path_with_cwd(s); #ifdef PIKE_FAKEROOT_OMIT foreach(PIKE_FAKEROOT_OMIT/PATH_SEPARATOR, string x) if(glob(x,tmp1)) return s; #endif return PIKE_FAKEROOT+tmp1; } #else #define fakeroot(X) X #endif // PIKE_FAKEROOT #ifdef PIKE_MODULE_RELOC string relocate_module(string s) { if(s == "/${PIKE_MODULE_PATH}" || has_prefix (s, "/${PIKE_MODULE_PATH}/")) { string tmp = s[21..]; foreach(pike_module_path, string path) { string s2 = fakeroot(sizeof(tmp)? combine_path(path, tmp) : path); if(master_file_stat(s2)) return s2; } } return fakeroot(s); } string unrelocate_module(string s) { if(s == "/${PIKE_MODULE_PATH}" || has_prefix (s, "/${PIKE_MODULE_PATH}/")) return s; foreach(pike_module_path, string path) if(s == path) return "/${PIKE_MODULE_PATH}"; else { path = combine_path(path, ""); if(has_prefix (s, path)) return "/${PIKE_MODULE_PATH}/"+s[sizeof(path)..]; } /* This is necessary to find compat modules... */ foreach(pike_module_path, string path) { path = combine_path(path, UPDIR, ""); if(has_prefix (s, path)) return "/${PIKE_MODULE_PATH}/"+UPDIR+s[sizeof(path)..]; } return s; } #ifdef fakeroot #undef fakeroot #endif #define fakeroot relocate_module #endif // PIKE_MODULE_RELOC //! @appears is_absolute_path //! 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 __amigaos__ #define IS_ABSOLUTE_PATH(X) (search((X),":")>0) return IS_ABSOLUTE_PATH(p); #else #if defined(__NT__) || defined(__OS2__) 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) has_prefix((X),"/") #endif return has_prefix(p,"/"); #endif } #if defined(__NT__) || defined(__OS2__) #define EXPLODE_PATH(X) (replace((X),"\\","/")/"/") #else #define EXPLODE_PATH(X) ((X)/"/") #endif //! @appears explode_path //! 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. To turn the components back into //! a path again, use @[combine_path()]. //! array(string) explode_path(string p) { #ifdef __amigaos__ int colon = search(reverse(p), ":"); if(colon >= 0) return ({ p[..<colon] }) + explode_path(p[<colon+1..]); array(string) r = p/"/"; return replace(r[..<1], "", "/")+r[<0..]; #else array(string) r = EXPLODE_PATH(p); if(r[0] == "" && sizeof(p)) r[0] = "/"; return r; #endif } //! @appears dirname //! Returns all but the last segment of a path. Some example inputs and //! outputs: //! //! @xml{<matrix> //! <r><c><b>Expression</b></c><c><b>Value</b></c></r> //! <r><c>dirname("/a/b")</c><c>"/a"</c></r> //! <r><c>dirname("/a/")</c><c>"/a"</c></r> //! <r><c>dirname("/a")</c><c>"/"</c></r> //! <r><c>dirname("/")</c><c>"/"</c></r> //! <r><c>dirname("")</c><c>""</c></r> //! </matrix>@} //! //! @seealso //! @[basename()], @[explode_path()] string dirname(string x) { if(x=="") return ""; #ifdef __amigaos__ array(string) tmp=x/":"; array(string) tmp2=tmp[-1]/"/"; tmp[-1]=tmp2[..<1]*"/"; if(sizeof(tmp2) >= 2 && tmp2[-2]=="") tmp[-1]+="/"; return tmp*":"; #else array(string) tmp=EXPLODE_PATH(x); if(x[0]=='/' && sizeof(tmp)<3) return "/"; return tmp[..<1]*"/"; #endif } //! @appears basename //! Returns the last segment of a path. //! //! @seealso //! @[dirname()], @[explode_path()] string basename(string x) { #ifdef __amigaos__ return ((x/":")[-1]/"/")[-1]; #define BASENAME(X) ((((X)/":")[-1]/"/")[-1]) #else array(string) tmp=EXPLODE_PATH(x); return tmp[-1]; #define BASENAME(X) (EXPLODE_PATH(X)[-1]) #endif } #ifdef PIKE_AUTORELOAD int autoreload_on; int newest; #define AUTORELOAD_BEGIN() \ int ___newest=newest; \ newest=0 #define AUTORELOAD_CHECK_FILE(X) do { \ if(autoreload_on) \ if(Stat s=master_file_stat(X)) \ if(s->mtime>newest) newest=[int]s->mtime; \ } while(0) #define AUTORELOAD_CHECK_PRECOMPILED_FILE(X) do { \ if(autoreload_on) { \ int mtime = get_precompiled_mtime (X); \ if (mtime >= 0 && mtime > newest) \ if(s->mtime>newest) newest=[int]s->mtime; \ } \ } while(0) #define AUTORELOAD_FINISH(VAR, CACHE, FILE) \ if(autoreload_on) { \ mixed val = CACHE[FILE]; \ if(!undefinedp (val) && val != no_value && \ newest <= load_time[FILE]) { \ VAR = val; \ } \ } \ load_time[FILE] = newest; \ 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 // PIKE_AUTORELOAD //! @appears compile_string //! Compile the Pike code in the string @[source] into a program. //! If @[filename] is not specified, it will default to @expr{"-"@}. //! //! Functionally equal to @expr{@[compile](@[cpp](@[source], @[filename]))@}. //! //! @seealso //! @[compile()], @[cpp()], @[compile_file()] //! program compile_string(string source, void|string filename, object|void handler, void|program p, void|object o, void|int _show_if_constant_errors) { #ifdef RECUR_COMPILE_DEBUG werror ("%*s>>> compile_string %O\n", GET_MSG_DEPTH, "", filename); INC_MSG_DEPTH(); #endif string code = cpp(source, filename||"-", 1, handler, compat_major, compat_minor, (undefinedp(_show_if_constant_errors)? show_if_constant_errors: _show_if_constant_errors)); program ret; if(code) ret = compile(code, handler, compat_major, compat_minor, p, o); if (source_cache) source_cache[ret] = source; #ifdef RECUR_COMPILE_DEBUG DEC_MSG_DEPTH(); werror ("%*s<<< compile_string %O\n", GET_MSG_DEPTH, "", filename); #endif return ret; } //! string master_read_file(string file) { string x = find_handler_for_path(file); if(x) { object h = fs_map[x]; file = file[sizeof(x)+1..]; if(h = h->open(fakeroot(file),"r") ) { string q = ([function(void : string)]h->read)(); return q; } // TODO: should we be falling back here, or is this a hidden problem? } object o=Files()->Fd(); if( ([function(string, string : int)]o->open)(fakeroot(file),"r") ) return ([function(void : string)]o->read)(); return 0; } #ifdef GETCWD_CACHE protected string current_path; int cd(string s) { current_path=0; return predef::cd(s); } string getcwd() { return current_path || (current_path=predef::getcwd()); } #endif // GETCWD_CACHE constant high_master_get_dir = predef::get_dir; string combine_path_with_cwd(string ... paths) { return combine_path(IS_ABSOLUTE_PATH(paths[0])?"":getcwd(),@paths); } #ifdef FILE_STAT_CACHE #define FILE_STAT_CACHE_TIME 20 int invalidate_time; mapping(string:multiset(string)) dir_cache = ([]); array(string) master_get_dir(string|void x) { string y = find_handler_for_path(file); if(y) { object h = fs_map[y]; x = x[sizeof(y)+1..]; return h->get_dir(x); } else return predef::get_dir(x); } Stat master_file_stat(string x) { object y = find_handler_for_path(file); string dir = combine_path_with_cwd(x); string file = BASENAME(dir); dir = dirname(dir); if(time() > invalidate_time) { dir_cache = ([]); invalidate_time = time()+FILE_STAT_CACHE_TIME; } multiset(string) d = dir_cache[dir]; if( undefinedp(d) ) { array(string) tmp = master_get_dir(dir); if(tmp) { #ifdef __NT__ tmp = map(tmp, lower_case); #endif d = dir_cache[dir] = (multiset)tmp; } else dir_cache[dir]=0; } #ifdef __NT__ file = lower_case(file); #endif if(d && !d[file]) return 0; if(y) { object h = fs_map[y]; x = x[sizeof(y)+1..]; return h->stat(x); } else return predef::file_stat(x); } #else //constant master_file_stat = predef::file_stat; //constant master_get_dir = predef::get_dir; Stat master_file_stat(string file) { string x = find_handler_for_path(file); if(x) { object h = fs_map[x]; file = file[sizeof(x)+1..]; return h->stat(file); } else return predef::file_stat(file); } array master_get_dir(string file) { string x = find_handler_for_path(file); if(x) { object h = fs_map[x]; file = file[sizeof(x)+1..]; return h->get_dir(file); } else return predef::get_dir(file); } #endif // FILE_STAT_CACHE //! mount a filesystem handler to be used by the resolver. on its own does noting, //! but may be used with @[add_module_path] and friends to enable modules to be loaded //! from Filesystem objects. //! //! @param mountpoint //! the location in the filesystem to mount the handler //! //! @param filesystem //! a filesystem object that will handle requests for the given mountpoint. //! //! @example //! master()->add_filesystem_handler("/foo/bar.zip", Filesystem.Zip("/foo/bar.zip")); //! master()->add_module_path("/foo/bar.zip/lib"); //! mixed add_filesystem_handler(string mountpoint, object /*Filesystem.Base*/ filesystem) { mixed rv = fs_map[mountpoint]; fs_map[mountpoint] = filesystem; return rv; } string find_handler_for_path(string file) { // TODO: maybe some caching would be worthwhile here. maybe. foreach(reverse(sort(indices(fs_map))); int x; string path) { string p = path; if(p[-1] != '/') p+="/"; if(file[-1] != '/') file+="/"; if(has_prefix(file, p)) return path; } return 0; } protected mapping(string:string) environment; #ifdef __NT__ protected void set_lc_env (mapping(string:string) env) { environment = ([]); foreach (env; string var; string val) environment[lower_case (var)] = val; } #endif //! @decl mapping(string:string) getenv (void|int force_update) //! //! Queries the environment variables. //! //! @param force_update //! A cached copy of the real environment is kept to make this //! function quicker. If the optional flag @[force_update] is nonzero //! then the real environment is queried and the cache is updated from //! it. That can be necessary if the environment changes through other //! means than @[putenv], typically from a C-level library. //! //! @returns //! Returns the whole environment as a mapping. Destructive //! operations on the mapping will not affect the internal //! environment representation. //! //! Variable names and values cannot be wide strings nor contain //! @expr{'\0'@} characters. Variable names also cannot contain //! @expr{'='@} characters. //! //! @note //! On NT the environment variable name is case insensitive. //! //! @seealso //! @[putenv()] mapping(string:string) getenv (void|int force_update) { mapping(string:string) res; if (force_update) { res = Builtin._getenv(); #ifdef __NT__ set_lc_env (res); #else environment = res + ([]); #endif } else { #ifdef __NT__ // Can't use the cached environment since variable names have been // lowercased there. res = Builtin._getenv(); if (!environment) set_lc_env (res); #else if (!environment) environment = Builtin._getenv(); res = environment + ([]); #endif } return res; } //! @decl string getenv (string varname, void|int force_update) //! //! Query the value of a specific environment variable. //! //! @param varname //! Environment variable to query. //! //! @param force_update //! A cached copy of the real environment is kept to make this //! function quicker. If the optional flag @[force_update] is nonzero //! then the real environment is queried and the cache is updated from //! it. That can be necessary if the environment changes through other //! means than @[putenv], typically from a C-level library. //! //! @returns //! Returns the value of the environment variable @[varname] //! if it exists, and @expr{0@} (zero) otherwise. //! //! Variable names and values cannot be wide strings nor contain //! @expr{'\0'@} characters. Variable names also cannot contain //! @expr{'='@} characters. //! //! @note //! On NT the environment variable name is case insensitive. //! //! @seealso //! @[putenv()] variant string getenv (string varname, void|int force_update) { if (!environment || force_update) { #ifdef __NT__ set_lc_env (Builtin._getenv()); #else environment = Builtin._getenv(); #endif } #ifdef __NT__ varname = lower_case(varname); #endif return environment[varname]; } void putenv (string varname, void|string value) //! Sets the environment variable @[varname] to @[value]. //! //! If @[value] is omitted or zero, the environment variable //! @[varname] is removed. //! //! @[varname] and @[value] cannot be wide strings nor contain //! @expr{'\0'@} characters. @[varname] also cannot contain //! @expr{'='@} characters. //! //! @note //! On NT the environment variable name is case insensitive. //! //! @seealso //! @[getenv()] //! { Builtin._putenv (varname, value); if (environment) { #ifdef __NT__ varname = lower_case (varname); #endif if (value) environment[varname] = value; else m_delete (environment, varname); } } //! @appears compile_file //! 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 //! @expr{@[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); string code = cpp(master_read_file(filename), filename, 1, handler, compat_major, compat_minor); if (!code) { error("Required feature missing.\n"); } return compile(code, handler, compat_major, compat_minor, p, o); } //! @appears normalize_path //! Replaces "\" with "/" if runing on MS Windows. It is //! adviced to use @[System.normalize_path] instead. string normalize_path( string path ) { #ifndef __NT__ return path; #else return replace(path,"\\","/"); #endif } //! Mapping containing the cache of currently compiled files. //! //! This mapping currently has the following structure: //! @mapping //! @member program filename //! @endmapping //! The filename path separator is / on both NT and UNIX. //! //! @note //! Special cases: The current master program is available under the //! name @expr{"/master"@}, and the program containing the @[main] //! function under @expr{"/main"@}. mapping(string:program|NoValue) programs=(["/master":this_program]); mapping(program:object) documentation = ([]); mapping(program:string) source_cache; mapping (program:object|NoValue) objects=([ this_program : this, object_program(_static_modules): _static_modules, ]); mapping(string:object|NoValue) fc=([]); // Note: It's assumed that the mappings above never decrease in size // unless the reverse mappings above also are updated. no_value should // otherwise be used for entries that should be considered removed. // The reverse mapping for objects isn't only for speed; search() // doesn't work reliably there since it calls `==. protected mapping(program:string) rev_programs = ([]); protected mapping(object:program) rev_objects = ([]); protected mapping(mixed:string) rev_fc = ([]); string programs_reverse_lookup (program prog) //! Returns the path for @[prog] in @[programs], if it got any. { // When running with trace, this function can get called // before __INIT has completed. // NB: We need to be reasonably thread safe, as the compiler // may be running in another thread. if (!rev_programs) return UNDEFINED; if (sizeof (rev_programs) < sizeof (programs)) { foreach (programs; string path; program|NoValue prog) if (prog == no_value) m_delete (programs, path); else rev_programs[prog] = path; } return rev_programs[prog]; } program objects_reverse_lookup (object obj) //! Returns the program for @[obj], if known to the master. { // NB: We need to be reasonably thread safe, as the compiler // may be running in another thread. if (sizeof (rev_objects) < sizeof (objects)) { foreach (objects; program prog; object|NoValue obj) if (obj == no_value) m_delete (rev_objects, obj); else rev_objects[obj] = prog; } return rev_objects[obj]; } string fc_reverse_lookup (object obj) //! Returns the path for @[obj] in @[fc], if it got any. { if (sizeof (rev_fc) < sizeof (fc)) { foreach (fc; string path; mixed obj) if (obj == no_value) m_delete (fc, obj); else rev_fc[obj] = path; } return rev_fc[obj]; } array(string) query_precompiled_names(string fname) //! Returns identifiers (e.g. file names) of potentially precompiled //! files in priority order. { #ifdef PRECOMPILED_SEARCH_MORE // Search for precompiled files in all module directories, not just // in the one where the source file is. This is useful when running // pike directly from the build directory. fname = fakeroot (fname); // FIXME: Not sure if this works correctly with the fakeroot and // module relocation stuff. foreach (pike_module_path, string path) if (has_prefix (fname, path)) return map (pike_module_path, `+, "/", fname[sizeof (path)..], ".o"); #endif return ({ fname + ".o" }); } int get_precompiled_mtime (string id) //! Given an identifier returned by query_precompiled_names, returns //! the mtime of the precompiled entry. Returns -1 if there is no //! entry. { Stat s = master_file_stat (fakeroot (id)); return s && s->isreg ? s->mtime : -1; } string read_precompiled (string id) //! Given an identifier returned by query_precompiled_names, returns //! the precompiled entry. Can assume the entry exists. { return master_read_file (id); } protected class CompileCallbackError { inherit _static_modules.Builtin.GenericError; constant is_generic_error = 1; constant is_compile_callback_error = 1; constant is_cpp_or_compilation_error = 1; } protected void compile_cb_error (string msg, mixed ... args) // Use this to throw errors that should be converted to plain compile // error messages, without backtraces being reported by // compile_exception. { if (sizeof (args)) msg = sprintf (msg, @args); throw (CompileCallbackError (msg, backtrace()[..<1])); } protected void compile_cb_rethrow (object|array err) // Use this to rethrow errors that should be converted to plain // compile error messages, without backtraces being reported by // compile_exception. { array bt; if (array|object e = catch (bt = get_backtrace (err))) handle_error (e); throw (CompileCallbackError (call_describe_error (err), bt)); } protected void call_compile_warning (object handler, string file, string msg, mixed ... args) { if (sizeof (args)) msg = sprintf (msg, @args); msg = trim (msg); if (handler?->compile_warning) handler->compile_warning (file, 0, msg); else if (master()->compile_warning) master()->compile_warning (file, 0, msg); else compile_warning (file, 0, msg); } #if constant(_static_modules.Builtin.mutex) #define THREADED #endif #ifdef __NT__ #define FIX_CASE(X) lower_case(X) #else #define FIX_CASE(X) (X) #endif /* __NT__ */ protected string base_from_filename(string fname) { string low_name = FIX_CASE(fname); if (has_prefix(low_name, ".#")) return 0; if (has_suffix(low_name, ".pike") || has_suffix(low_name, ".pmod")) { return fname[..<5]; } if (has_suffix(low_name, ".so")) { return fname[..<3]; } return 0; } protected int prio_from_filename(string fname) { fname = FIX_CASE(fname); if (has_suffix(fname, ".pmod")) return 3; if (has_suffix(fname, ".so")) return 2; if (has_suffix(fname, ".pike")) return 1; // FIXME: Warn here? return 0; } //! Find the files in which @[mod] is defined, as they may be hidden away in //! joinnodes and dirnodes //! //! @param mod //! The module we are looking for. //! //! @returns //! An array of strings with filenames. //! (one for each file in a joinnode, or just one otherwise) array(string) module_defined(object|program mod) { array files = ({}); if (programp(mod)) return ({ Builtin.program_defined([program]mod) }); array mods; if (mod->is_resolv_joinnode) mods = mod->joined_modules; else mods = ({ mod }); foreach (mods;; object mod) { if (mod->is_resolv_dirnode) files += ({ Builtin.program_defined(object_program(mod->module)) }); else files += ({ Builtin.program_defined(object_program(mod)) }); } return files; } //! Enable caching of sources from compile_string() void enable_source_cache() { if (!source_cache) source_cache = ([]); } //! Show documentation for the item @[obj] //! //! @param obj //! The object for which the documentation should be shown //! //! @returns //! an AutoDoc object object show_doc(program|object|function obj) { object doc_extractor = main_resolv("Tools.AutoDoc.PikeExtractor.extractClass"); string child; program prog; if (programp(obj)) prog = obj; if (functionp(obj)) { prog = function_program(obj); child = ((describe_function(obj)||"")/"->")[-1]; } if (objectp(obj)) { if (obj->is_resolv_joinnode) obj = obj->joined_modules[0]; // FIXME: check for multiples if (obj->is_resolv_dirnode) prog = object_program(obj->module); else prog = object_program(obj); } if (prog && !documentation[prog] && doc_extractor) { string source; if (source_cache && source_cache[prog]) source = source_cache[prog]; else { array sourceref = array_sscanf(Builtin.program_defined(prog), "%s%[:]%[0-9]"); source = master_read_file(sourceref[0]); if (sizeof(sourceref[1]) && sizeof(sourceref[2])) { if (programp(prog)) child = ((describe_program(prog)||"")/".")[-1]; } } if (source) { catch { documentation[prog] = doc_extractor(source, sprintf("%O", prog)); }; //FIXME: handle this error somehow } } if (documentation[prog]) { if (child) return documentation[prog]->findObject(child)||documentation[prog]->findChild(child); else return documentation[prog]; } } // Make it possible to customize the backtrace formatting. protected string call_describe_backtrace(array(mixed) trace, void|int linewidth) { return (all_constants()["describe_backtrace"]||describe_backtrace) (trace, linewidth); } protected string call_describe_error(mixed /* object|array */ err) { return (all_constants()["describe_error"]||describe_error)(err); } protected program low_findprog(string pname, string ext, object|void handler, void|int mkobj) { program ret; Stat s; string fname=pname+ext; resolv_debug("low_findprog(%O, %O, %O, %O)\n", pname, ext, handler, mkobj); #ifdef PIKE_MODULE_RELOC fname = unrelocate_module(fname); #endif #ifdef __NT__ // Ugly kluge to work better with cygwin32 "/X:/" paths. 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->isreg ) { #ifdef PIKE_AUTORELOAD if(!autoreload_on || load_time[fname] >= s->mtime) #endif { if(!undefinedp (ret=programs[fname]) && ret != no_value) { resolv_debug ("low_findprog %s: returning cached (no autoreload)\n", fname); return ret; } } AUTORELOAD_BEGIN(); #ifdef PIKE_AUTORELOAD if (load_time[fname] >= s->mtime) if (!undefinedp (ret=programs[fname]) && ret != no_value) { resolv_debug ("low_findprog %s: returning cached (autoreload)\n", fname); return ret; } #endif object compiler_lock = DefaultCompilerEnvironment->lock(); if(!undefinedp(ret = programs[fname]) && (ret != no_value)) { destruct(compiler_lock); resolv_debug("low_findprog %s: returning cached (from other thread).\n", fname); return ret; } switch(ext) { case "": case ".pike": foreach(query_precompiled_names(fname), string oname) { int o_mtime = get_precompiled_mtime (oname); if (o_mtime >= 0) { if (o_mtime >= s->mtime) { mixed err=catch { object|program decoded; AUTORELOAD_CHECK_PRECOMPILED_FILE (oname); resolv_debug ("low_findprog %s: decoding dumped\n", fname); INC_RESOLV_MSG_DEPTH(); decoded = decode_value(read_precompiled (oname), (handler?->get_codec || get_codec)(fname, mkobj, handler)); DEC_RESOLV_MSG_DEPTH(); resolv_debug ("low_findprog %s: dump decode ok\n", fname); if (decoded?->this_program_does_not_exist) { resolv_debug ("low_findprog %s: program claims not to exist\n", fname); return programs[fname] = 0; } else { if (objectp(decoded)) { resolv_debug("low_findprog %s: decoded object %O\n", fname, decoded); objects[ret = object_program(decoded)] = decoded; } else { ret = decoded; } resolv_debug("low_findprog %s: returning %O\n", fname, ret); return programs[fname]=ret; } }; DEC_RESOLV_MSG_DEPTH(); resolv_debug ("low_findprog %s: dump decode failed\n", fname); programs[fname] = no_value; call_compile_warning (handler, oname, "Decode failed: " + call_describe_error(err)); // handle_error(err); } else if (out_of_date_warning) { call_compile_warning (handler, oname, "Compiled file is out of date"); } } } resolv_debug ("low_findprog %s: compiling, mkobj: %O\n", fname, mkobj); INC_RESOLV_MSG_DEPTH(); programs[fname]=ret=__empty_program(0, fname); AUTORELOAD_CHECK_FILE (fname); string src; if (array|object err = catch (src = master_read_file (fname))) { DEC_RESOLV_MSG_DEPTH(); resolv_debug ("low_findprog %s: failed to read file\n", fname); objects[ret] = no_value; ret=programs[fname]=0; // Negative cache. compile_cb_rethrow (err); } if ( mixed e=catch { ret=compile_string(src, fname, handler, ret, mkobj? (objects[ret]=__null_program()) : 0); } ) { DEC_RESOLV_MSG_DEPTH(); resolv_debug ("low_findprog %s: compilation failed\n", fname); objects[ret] = no_value; ret=programs[fname]=0; // Negative cache. destruct(compiler_lock); throw(e); } destruct(compiler_lock); DEC_RESOLV_MSG_DEPTH(); resolv_debug ("low_findprog %s: compilation ok\n", fname); break; #if constant(load_module) case ".so": if (fname == "") { werror( "low_findprog(%O, %O) => load_module(\"\")\n" "%s\n", pname, ext, call_describe_backtrace(backtrace()) ); } if (array|object err = catch (ret = load_module(fakeroot(fname)))) { DEC_RESOLV_MSG_DEPTH(); resolv_debug ("low_findprog %s: failed to load binary\n", fname); objects[ret] = no_value; ret=programs[fname]=0; // Negative cache. if (objectp (err) && err->is_module_load_error) // Do not treat errors from dlopen(3) as exceptions since in // a dist we can have .so files that are dynamically linked // against libraries that don't exist on the system, and in // that case we should just treat the module as nonexisting. // // What we really want is to do this only for errors that // are due to nonexisting files, but the error reporting // from dlerror(3) doesn't allow us to tell those from other // errors. call_compile_warning (handler, fname, "Failed to load library: %s\n", err->reason); else compile_cb_rethrow (err); } else resolv_debug ("low_findprog %s: loaded binary\n", fname); #endif /* load_module */ } AUTORELOAD_FINISH(ret,programs,fname); if (ret?->this_program_does_not_exist) { resolv_debug ("low_findprog %s: program says it doesn't exist\n", fname); return programs[fname] = 0; } else { if(!ret) resolv_debug("low_findprog %s: dependencies failed.\n", fname); else resolv_debug("low_findprog %s: returning %O\n", fname, ret); return programs[fname]=ret; } } resolv_debug ("low_findprog %s: file not found\n", fname); return 0; } // // This function is called by the compiler when a delayed compilation // error occurs in the given program. It should remove all references // to the program so that it can be freed. // void unregister(program p) { // werror("Unregistering %O...\n", p); object compiler_lock = DefaultCompilerEnvironment->lock(); if(string fname=rev_programs[p] || search(programs,p)) { resolv_debug("unregister %s\n", fname); if (m_delete (rev_programs, p)) m_delete (programs, fname); else programs[fname] = no_value; string name = program_path_to_name (fname); mixed n = has_value (name, '.') ? resolv ((name / ".")[..<1] * ".") : get_root_module(); if (objectp (n) && (n->is_resolv_dirnode || n->is_resolv_joinnode)) n->delete_value (p); fname = dirname (fname); if ( fname!="" && objectp (n = fc[fname]) ) if (n->is_resolv_dirnode) // Won't find joinnodes in fc. n->delete_value (p); } object o = m_delete(objects, p); if (objectp (o)) { m_delete(rev_objects, o); } foreach (fc; string name; mixed mod) if (objectp(mod) && object_program(mod) == p) if (m_delete (rev_fc, mod)) m_delete (fc, name); else fc[name] = no_value; // FIXME: What about compat handlers? } protected 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; //werror("low_cast_to_program(%O, %O, %O, %O)\n", // pname, current_file, handler, mkobj); if(sscanf(reverse(BASENAME(pname)),"%s.%s",ext, nname)) { ext="."+reverse(ext); pname=pname[..<sizeof(ext)]; } else { ext=""; } // NB: No need to lock the compiler here; findprog() will // lock and reprobe on miss in the programs mapping. if(IS_ABSOLUTE_PATH(pname)) { program|NoValue prog = programs[pname]; if ((!undefinedp(prog)) && (prog != no_value)) { return prog; } 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) { resolv_debug ("cast_to_program(%O, %O)\n", pname, current_file); INC_RESOLV_MSG_DEPTH(); program ret = low_cast_to_program(pname, current_file, handler); DEC_RESOLV_MSG_DEPTH(); resolv_debug ("cast_to_program(%O, %O) => %O\n", pname, current_file, ret); if (programp (ret)) return ret; error("Cast %O to program failed%s.\n", pname, (current_file && current_file!="-") ? sprintf(" in %O",current_file) : ""); } protected string narrowify_string(string s) { if (Builtin.string_width(s) <= 8) return s; // Perform Unicode escaping. return map(s/"", lambda(string s) { if (Builtin.string_width(s) <= 8) return s; int c = s[0] & 0xffffffff; if (c <= 0xffff) return sprintf("\\u%04x", c); return sprintf("\\U%08x", c); }) * ""; } //! This function is called when an error occurs that is not caught //! with catch(). void handle_error(array|object trace) { // NB: Use predef::trace() to modify trace level here. // predef::trace(2); if(mixed x=catch { werror(call_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 { // NB: Splited werror calls to retain some information // even if/when werror throws. catch { if (catch { string msg = [string]x[0]; array bt = [array]x[1]; werror("%s", narrowify_string(msg)); werror(narrowify_string(sprintf("%O\n", bt))); }) { werror(narrowify_string(sprintf("%O\n", x))); } }; werror(narrowify_string(sprintf("Original error:\n" "%O\n", trace))); }) { werror("sprintf() failed to write error.\n"); } } // predef::trace(0); } /* This array contains the names of the functions * that a replacing master-object may want to override. */ constant master_efuns = ({ "error", "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", "get_backtrace", "normalize_path", "true", "false", "getenv", "putenv", #ifdef GETCWD_CACHE "cd", "getcwd", #endif }); enum bool { false=0, true=1 }; //! Prefix for Pike-related C header files. string include_prefix; //! Prefix for autodoc files. string doc_prefix; //! Flags suitable for use when compiling Pike C modules string cflags; //! Flags suitable for use when linking Pike C modules string ldflags; // Not yet used //! @decl int write(string fmt, mixed ... args) //! @appears write //! Writes a string on stdout. Works just like @[Stdio.File.write] //! on @[Stdio.stdout]. //! @decl int werror(string fmt, mixed ... args) //! @appears werror //! Writes a string on stderr. Works just like @[Stdio.File.write] //! on @[Stdio.stderr]. /* Note that create is called before add_precompiled_program */ protected void create() { foreach(master_efuns, string e) if (has_index(this, e)) add_constant(e, this[e]); else error("Function %O is missing from master.pike.\n", e); // This gives the type int(0..1), which is more close to reality // than the enum type (aka int(1..1)) // // doing the add_constant on the typeof directly gives int(1..1) // instead, since the same "optimization" of the type is done in that // case. add_constant("bool", typeof([int(0..1)](mixed)0)); add_constant("__dirnode", dirnode); add_constant("__joinnode", joinnode); add_constant("write", write); add_constant("werror", werror); // To make it possible to overload get_dir and file_stat later on. // It's not possible to replace efuns with normal functions in .o-files add_constant("get_dir", high_master_get_dir ); add_constant("file_stat", lambda( string f, int|void d ) { return file_stat(f,d);} ); object rnd = Builtin.RandomSystem(); add_constant("random", rnd->random); add_constant("random_string", rnd->random_string); #define CO(X) add_constant(#X,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-independant 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 #if "#cflags# "[0]!='#' cflags = "#cflags#"; #endif #if "#ldflags# "[0]!='#' ldflags = "#ldflags#"; #endif #if "#include_prefix#"[0]!='#' include_prefix = "#include_prefix#"; cflags = (cflags || "") + " -I" + dirname(include_prefix); #endif #if "#doc_prefix#"[0]!='#' doc_prefix = "#doc_prefix#"; #endif #if constant(__embedded_resource_directory) // for use with embedded interpreters // add path for architecture-dependant files add_include_path(__embedded_resource_directory + "/lib/include"); add_module_path(__embedded_resource_directory + "/lib/modules"); add_module_path(__embedded_resource_directory + "/" + replace(uname()->machine, " ", "_") + "/modules"); #endif system_module_path=pike_module_path; } //! 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) { resolv_debug ("handle_inherit(%O, %O)\n", pname, current_file); INC_RESOLV_MSG_DEPTH(); program ret = cast_to_program(pname, current_file, handler); DEC_RESOLV_MSG_DEPTH(); resolv_debug ("handle_inherit(%O, %O) => %O\n", pname, current_file, ret); return ret; } 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(!objectp(o = objects[p])) { object compiler_lock = DefaultCompilerEnvironment->lock(); // NB: p might be a function in a fake_object... if(!objectp(o = objects[p])) o = objects[p] = p(); destruct(compiler_lock); } 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, object|void current_handler) { resolv_debug ("cast_to_object(%O, %O)\n", oname, current_file); INC_RESOLV_MSG_DEPTH(); object o = low_cast_to_object(oname, current_file, current_handler); DEC_RESOLV_MSG_DEPTH(); resolv_debug ("cast_to_object(%O, %O) => %O\n", oname, current_file, o); if (objectp (o)) return o; error("Cast %O to object failed%s.\n", oname, (current_file && current_file!="-") ? sprintf(" in %O",current_file) : ""); } // Marker used for negative caching in module caches. // FIXME: Won't this cause problems when inheriting "/master"? protected class ZERO_TYPE {}; protected object Unicode; //! Module node representing a single directory. //! //! @seealso //! @[joinnode] class dirnode (string dirname, object|void compilation_handler, string|void name) { constant is_resolv_dirnode = 1; // objectp() is intentionally not used on the module object, to // allow a module to deny its own existence with `!. mixed module; mapping(string:mixed) cache=([]); // Maps a base name like "Bar" to an ordered array of file paths, // e.g. ({ "/lib/Foo.pmod/Bar.pmod", "/lib/Foo.pmod/Bar.so" }). protected mapping(string:array(string)) file_paths = ([]); #ifdef __NT__ #define FIX_CASE(X) lower_case(X) #else #define FIX_CASE(X) (X) #endif /* __NT__ */ protected string base_from_filename(string fname) { string low_name = FIX_CASE(fname); catch { // FIXME: Warn on failure? low_name = utf8_to_string(low_name); if (Builtin.string_width(low_name) > 8) { // We might need to normalize the string (cf MacOS X). // Load the Unicode module if it hasn't already been loaded. if (!Unicode) { Unicode = resolv("Unicode"); } low_name = Unicode.normalize(low_name, "NFC"); } }; if (has_prefix(low_name, ".#")) return 0; if (has_suffix(low_name, ".pike") || has_suffix(low_name, ".pmod")) { return fname[..<5]; } if (has_suffix(low_name, ".so")) { return fname[..<3]; } return 0; } protected int prio_from_filename(string fname) { fname = FIX_CASE(fname); if (has_suffix(fname, ".pmod")) return 3; if (has_suffix(fname, ".so")) return 2; if (has_suffix(fname, ".pike")) return 1; return 0; // We will not reach this. } protected void create() { if (!dirname) { error("Attempt to create a dirnode without a directory.\n" "Have you inherited a dirnode?\n"); } resolv_debug ("dirnode(%O,%O) created with name %O\n", dirname, compilation_handler, name); fc[dirname]=this; if (!sizeof(dirname)) return; array(string) files = sort(master_get_dir(dirname)||({})); array(string) bases = map(files, base_from_filename); files = filter(files, bases); bases = filter(bases, bases); resolv_debug("dirnode(%O,%O) got %d files.\n", dirname, compilation_handler, sizeof(bases)); if (!sizeof(files)) return; foreach(files; int no; string fname) { fname = combine_path(dirname, fname); string base = bases[no]; if (base == "module") { // We need a module_checker. module = module_checker(); } array(string) paths = file_paths[base]; if (!paths) { // New entry. file_paths[base] = ({ fname }); continue; } // Multiple files. Order according to prio_from_filename(). // Insert sort. Worst case is 3 filenames. int prio = prio_from_filename(fname); int index; foreach(paths; index; string other_fname) { if (prio_from_filename(other_fname) <= prio) break; } file_paths[base] = paths[..index-1] + ({ fname }) + paths[index..]; } } protected class module_checker { protected int `!() { resolv_debug ("dirnode(%O)->module_checker()->`!()\n",dirname); if (mixed err = catch { // Look up module. if (module = cache["module"] || low_ind("module", 1)) { /* This allows for `[] to have side effects first time * it is called. (Specifically, the Calendar module uses * this). */ cache=([]); _cache_full=0; } resolv_debug("dirnode(%O)->module_checker()->`!() => %s\n", dirname, !module ? "doesn't exist" : "exists"); return !module; }) { //werror ("findmodule error: " + call_describe_backtrace (err)); // findmodule() failed. This can occur due to circularities // between encode_value()'ed programs. // The error will then typically be: // "Cannot call functions in unfinished objects." // Pretend not to exist for now... resolv_debug("dirnode(%O)->module_checker()->`!() => failure, doesn't exist\n", dirname); return 1; } } protected mixed `[](string index) { resolv_debug ("dirnode(%O)->module_checker()[%O] => %O\n", dirname, index, module[?index]); return module[?index]; } protected array(string) _indices() { if(module) return indices(module); } protected array _values() { if(module) return values(module); } } protected mixed low_ind(string index, int(0..1)|void set_module) { array(string) paths; INC_RESOLV_MSG_DEPTH(); if (!(paths = file_paths[index])) { DEC_RESOLV_MSG_DEPTH(); resolv_debug("dirnode(%O)->ind(%O) => no file match\n", dirname, index); return UNDEFINED; } foreach(paths, string fname) { resolv_debug("dirnode(%O)->ind(%O) Trying file %O...\n", dirname, index, fname); Stat stat = master_file_stat(fakeroot(fname)); if (!stat) { resolv_debug("dirnode(%O)->ind(%O) file %O disappeared!\n", dirname, index, fname); continue; } if (has_suffix(fname, ".pmod")) { if (stat->isdir) { if (dirnode n = fc[fname]) { // Avoid duplicate dirnodes for the same dirs. This can // happen if the master is replaced, e.g. with master_76 // in 7.6/modules/__default.pmod. resolv_debug("dirnode(%O)->ind(%O) => found subdirectory %O, " "returning old dirnode\n", dirname, index, fname); return n; } resolv_debug("dirnode(%O)->ind(%O) => found subdirectory %O, " "creating new dirnode\n", dirname, index, fname); return fc[fname] = dirnode(fname, compilation_handler, name && (name == "predef::" ? index : name + "." + index)); } resolv_debug("dirnode(%O)->ind(%O) casting (object)%O\n", dirname, index, fname); // FIXME: cast_to_program() and cast_to_object() // have lots of overhead to guess the proper // filename. This overhead isn't needed in // our cases, so we could make do with // low_findprog() and the caches. mixed ret; if (ret = catch { if (objectp(ret = low_cast_to_object(fname, 0, compilation_handler))) { // This assignment is needed for eg the Calendar module. if (set_module) module = ret; if(mixed tmp=ret->_module_value) ret=tmp; DEC_RESOLV_MSG_DEPTH(); resolv_debug("dirnode(%O)->ind(%O) => found submodule %O:%O\n", dirname, index, fname, ret); return ret; } }) { resolv_debug("dirnode(%O)->ind(%O) ==> Cast to object failed: %s\n", dirname, index, call_describe_backtrace(ret)); } } else { resolv_debug("dirnode(%O)->ind(%O) casting (program)%O\n", dirname, index, fname); program|object ret; if (ret = low_cast_to_program(fname, 0, compilation_handler)) { DEC_RESOLV_MSG_DEPTH(); resolv_debug("dirnode(%O)->ind(%O) => found subprogram %O:%O\n", dirname, index, fname, ret); #if constant(load_module) if (has_suffix(fname, ".so")) { // This is compatible with 7.4 behaviour. if (!ret->_module_value) { object o; // NB: p might be a function in a fake_object... if(!objectp(o = objects[ret])) { object compiler_lock = DefaultCompilerEnvironment->lock(); if(!objectp(o = objects[ret])) o = objects[ret] = ret(); destruct(compiler_lock); } ret = o; } if(mixed tmp=ret->_module_value) ret=tmp; } #endif return ret; } } resolv_debug("dirnode(%O)->ind(%O) => failure for file %O\n", dirname, index, fname); } resolv_debug("dirnode(%O)->ind(%O) => UNDEFINED\n", dirname, index); return UNDEFINED; } protected mixed ind(string index) { resolv_debug ("dirnode(%O)->ind(%O)\n", dirname, index); INC_RESOLV_MSG_DEPTH(); if (_cache_full) { DEC_RESOLV_MSG_DEPTH(); resolv_debug("dirnode(%O)->ind(%O) => cache_full %O\n", dirname, index, cache[index]); return cache[index]; } if(module) { mixed o; if(!undefinedp(o=module[index])) { DEC_RESOLV_MSG_DEPTH(); resolv_debug ("dirnode(%O)->ind(%O) => found %O\n", dirname, index, o); return o; } resolv_debug ("dirnode(%O)->ind(%O) => not found in module\n", dirname, index); } else resolv_debug ("dirnode(%O)->ind(%O) => no module\n", dirname, index); DEC_RESOLV_MSG_DEPTH(); return low_ind(index); } protected mixed `[]=(string index, mixed value) { if(module && has_index(module, index)) return module[index]=value,cache[index]=value; error("No such variable (%s) in object.\n", index); } protected mixed `->=(string index, mixed value) { return `[]=(index, value); } protected mixed `[](string index) { mixed ret; #ifdef MODULE_TRACE werror("%*nDirnode(%O) cache[%O] ?????\n", sizeof(backtrace()),dirname,index); #endif if(!undefinedp(ret=cache[index])) { #ifdef MODULE_TRACE werror("%*nDirnode(%O) cache[%O] => %O%s\n", sizeof(backtrace()),dirname,index, ret, (ret != ZERO_TYPE)?"":" (zero_type)"); #endif if (ret != ZERO_TYPE) return ret; #ifdef MODULE_TRACE werror("%*nDirnode(%O) ZERO_TYPE!\n", sizeof(backtrace()),dirname); #endif return UNDEFINED; } ret=ind(index); // We might have gotten placeholder objects in the first pass // which must not be cached to the second. if(ret == predef::__placeholder_object) { #ifdef MODULE_TRACE werror("%*nDirnode(%O) PLACE_HOLDER.\n", sizeof(backtrace()),dirname); #endif return ret; } cache[index] = undefinedp(ret) ? ZERO_TYPE : ret; return ret; } protected mixed `->(string index) { if( (< "dirname", "name", "is_resolv_dirnode", "module", "delete_value" >)[index] ) return ::`->(index); return `[](index); } protected mixed safe_index(string index) { mixed err; resolv_debug ("dirnode(%O): %O...\n", dirname, index); if (err = catch { return `[](index); }) { call_compile_warning (compilation_handler, dirname+"."+fname, "Compilation failed: " + call_describe_error(err)); } return UNDEFINED; } protected int(0..1) _cache_full; protected void fill_cache() { if (_cache_full) { return; } resolv_debug ("dirnode(%O) => Filling cache...\n", dirname); // NOTE: We rely on side effects in `[]() and safe_index() // to fill the cache. // Why shouldn't thrown errors be propagated here? /mast if (module) { resolv_debug("dirnode(%O): module: %O, indices:%{%O, %}\n", dirname, module, indices(module)); map(indices(module), safe_index); } map(indices(file_paths), safe_index); _cache_full = (object_program(module) != __null_program); resolv_debug ("dirnode(%O) => Cache %s.\n", dirname, _cache_full?"full":"partially filled"); } protected array(string) _indices() { fill_cache(); // Note: Cannot index cache at all here to filter out the // ZERO_TYPE values since that can change the order in the // mapping, and _indices() has to return the elements in the same // order as a nearby _values() call. return filter (indices (cache), map (values (cache), `!=, ZERO_TYPE)); } protected array(mixed) _values() { fill_cache(); return values(cache) - ({ZERO_TYPE}); } void delete_value (mixed val) { if (string name = search (cache, val)) { m_delete (cache, name); _cache_full = 0; } } protected int(0..) _sizeof() { return sizeof(_values()); } protected string _sprintf(int as) { return as=='O' && (name || sprintf("master()->dirnode(%O:%O)", dirname, module && module)); } } //! Module node holding possibly multiple directories, //! and optionally falling back to another level. //! //! @seealso //! @[dirnode] class joinnode (array(object|mapping) joined_modules, object|void compilation_handler, joinnode|mapping(mixed:int(0..0))|void fallback_module, string|void name) { constant is_resolv_joinnode = 1; mapping(string:mixed) cache=([]); protected string _sprintf(int as) { if (as != 'O') return 0; if (name) { if (has_value (name, '|')) return "joinnode(" + name + ")"; else return name; // Let's be brief. } else return sprintf("master()->joinnode(%O)", joined_modules); } protected void create() { if( !fallback_module ) { // NOTE: Uses the empty mapping as the default fallback // for simplified code. fallback_module = ([]); } if (!joined_modules) { error("Attempt to create a joinnode without joined modules.\n" "Have you inherited a joinnode?\n"); } if (!name) { mapping(string:int(1..1)) names = ([]); foreach (joined_modules, object|mapping m) { if (objectp (m) && stringp (m->name)) names[m->name] = 1; } if (sizeof (names)) name = sort (indices (names)) * "|"; } resolv_debug ("joinnode(%O) created with name %O\n", joined_modules, name); } void add_path(string path) { path = combine_path(getcwd(), path); dirnode node = fc[path] || (fc[path] = dirnode(path, compilation_handler, name && !has_value (name, '|') && name)); if (sizeof(joined_modules) && joined_modules[0] == node) return; joined_modules = ({ node }) + (joined_modules - ({ node })); cache = ([]); } void rem_path(string path) { path = combine_path(getcwd(), path); joined_modules = filter(joined_modules, lambda(dirnode node) { return !objectp(node) || !node->is_resolv_dirnode || (node->dirname != path); }); cache = ([]); } protected mixed ind(string index) { resolv_debug ("joinnode(%O)->ind(%O)\n", joined_modules, index); INC_RESOLV_MSG_DEPTH(); array(mixed) res = ({}); foreach(joined_modules, object|mapping o) { mixed ret; if (!undefinedp(ret = o[index])) { if (objectp(ret) && (ret->is_resolv_dirnode || ret->is_resolv_joinnode)) { // Only join directorynodes (or joinnodes). res += ({ ret }); } else { DEC_RESOLV_MSG_DEPTH(); resolv_debug ("joinnode(%O)->ind(%O) => found %O\n", joined_modules, index, ret); return (ret); } } } if (sizeof(res)) { DEC_RESOLV_MSG_DEPTH(); resolv_debug("joinnode(%O)->ind(%O) => new joinnode, fallback: %O\n", joined_modules, index, fallback_module[index]); return joinnode(res, compilation_handler, fallback_module[index], name && !has_value (name, '|') && (name == "predef::" ? index : name + "." + index)); } DEC_RESOLV_MSG_DEPTH(); resolv_debug ("joinnode(%O)->ind(%O) => not found. Trying fallback %O\n", joined_modules, index, fallback_module); return fallback_module[index]; } protected mixed `[]=(string index, mixed value) { foreach(joined_modules, object|mapping o) if(has_index(o, index)) return o[index]=value,cache[index]=value; error("No such variable (%s) in object.\n", index); } protected mixed `->=(string index, mixed value) { if( index=="fallback_module" ) return fallback_module=value; return `[]=(index, value); } protected mixed `[](string index) { mixed ret; if (!undefinedp(ret = cache[index])) { if (ret != ZERO_TYPE) { return ret; } return UNDEFINED; } ret = ind(index); // We might have gotten placeholder objects in the first pass // which must not be cached to the second. if(ret == predef::__placeholder_object) return ret; if (undefinedp(ret)) { cache[index] = ZERO_TYPE; } else { cache[index] = ret; } return ret; } protected mixed `->(string index) { if( (< "joined_modules", "fallback_module", "name", "is_resolv_joinnode", "add_path", "rem_path", "delete_value", "_encode", "_decode" >)[index] ) return ::`->(index); return `[](index); } protected int _cache_full; protected void fill_cache() { if (_cache_full) { return; } foreach(joined_modules, object|mapping|program o) { foreach(indices(o), string index) { if (!has_index(cache, index)) { `[](index); } } } foreach(indices(fallback_module), string index) { `[](index); } _cache_full = 1; } protected array(string) _indices() { fill_cache(); // Note: Cannot index cache at all here to filter out the // ZERO_TYPE values since that can change the order in the // mapping, and _indices() has to return the elements in the same // order as a nearby _values() call. return filter (indices (cache), map (values (cache), `!=, ZERO_TYPE)); } protected array(mixed) _values() { fill_cache(); return values(cache) - ({ZERO_TYPE}); } protected int(0..) _sizeof() { return sizeof(_values()); } void delete_value (mixed val) { if (string name = search (cache, val)) m_delete (cache, name); for (int i = 0; i < sizeof (joined_modules); i++) { object|mapping|program o = joined_modules[i]; if (o == val) { joined_modules = joined_modules[..i - 1] + joined_modules[i + 1..]; i--; } else if (objectp (o) && (o->is_resolv_dirnode || o->is_resolv_joinnode)) o->delete_value (val); else if (string name = mappingp (o) && search (o, val)) m_delete (o, name); } } protected int `== (mixed other) { return objectp (other) && (other->is_resolv_joinnode == 1) && equal (mkmultiset (joined_modules), mkmultiset (other->joined_modules)); } array(object) _encode() { return joined_modules; } void _decode (array(object) joined_modules) { this::joined_modules = joined_modules; } } joinnode handle_import(string path, string|void current_file, object|void current_handler) { #ifdef __amigaos__ if(path == ".") path = ""; #endif if(current_file) { path = combine_path_with_cwd(dirname(current_file), path); } else { path = combine_path_with_cwd(path); } // FIXME: Need caching!!! #if 0 // FIXME: This caching strategy could be improved, // since it ignores module_nodes from the // ordinary module tree. if (module_node_cache[current_handler]) { if (module_node_cache[current_handler][path]) { return module_node_cache[current_handler][path]; } } else { module_node_cache[current_handler] = ([]); } module_node node = module_node_cache[current_handler][path] = module_node("import::"+path, 0, current_handler); #endif /* 0 */ joinnode node = joinnode(({}), current_handler); #ifdef PIKE_MODULE_RELOC // If we have PIKE_MODULE_RELOC enabled, // we might need to map to multiple directories. if(path == "/${PIKE_MODULE_PATH}" || has_prefix(path, "/${PIKE_MODULE_PATH}/")) { string tmp = path[21..]; foreach(pike_module_path, string prefix) { node->add_path(sizeof(tmp)? combine_path(prefix, tmp) : prefix); } } else #endif /* PIKE_MODULE_RELOC */ node->add_path(path); return node; } program|object findmodule(string fullname, object|void handler, void|string name) { program|object o; resolv_debug ("findmodule(%O)\n", fullname); if(!undefinedp(o=fc[fullname]) && o != no_value) { if (objectp(o) || programp(o) || o != 0) { resolv_debug ("findmodule(%O) => found %O (cached)\n", fullname, o); return o; } resolv_debug ("findmodule(%O) => not found (cached)\n", fullname); return UNDEFINED; } if(Stat stat=master_file_stat(fakeroot(fullname))) { if(stat->isdir) { resolv_debug ("findmodule(%O) => new dirnode\n", fullname); return fc[fullname] = dirnode(fullname, handler, name); } #if constant (load_module) else if (has_suffix (fullname, ".so")) { o = fc[fullname] = low_cast_to_object(fullname, "/.", handler); DEC_RESOLV_MSG_DEPTH(); resolv_debug ("findmodule(%O) => got .so object %O\n", fullname, o); return o; } #endif } INC_RESOLV_MSG_DEPTH(); if(objectp (o = low_cast_to_object(fullname, "/.", handler))) { DEC_RESOLV_MSG_DEPTH(); resolv_debug ("findmodule(%O) => got object %O\n", fullname, o); return fc[fullname]=o; } if (programp (o = low_cast_to_program(fullname, "/.", handler))) { DEC_RESOLV_MSG_DEPTH(); resolv_debug ("findmodule(%O) => got .pike program %O\n", fullname, o); return fc[fullname] = o; } DEC_RESOLV_MSG_DEPTH(); resolv_debug ("findmodule(%O) => not found\n", fullname); return fc[fullname] = 0; } #if 0 mixed handle_import(string what, string|void current_file, object|void handler) { string path; if(current_file) { path = combine_path_with_cwd(dirname(current_file), what); } else { path = combine_path_with_cwd(what); } #if 0 // If we can't cache the dirnode when we got a handler, then // findmodule has to be broken too. Good caching is necessary for // module dumping. /mast if (handler) { resolv_debug ("handle_import(%O, %O, %O) => new dirnode with handler\n", what, current_file, handler); return dirnode(path, handler); } #endif if(objectp (fc[path])) { resolv_debug ("handle_import(%O, %O) => found %O (cached)\n", object s = file_stat(tmp); if(s && s->isreg) { object fs; catch(fs = resolv("Filesystem.Zip")(tmp)); if(fs) add_filesystem_handler(tmp, fs); tmp = combine_path(tmp, "include"); } what, current_file, fc[path]); return fc[path]; } resolv_debug ("handle_import(%O, %O) => new dirnode\n", what, current_file); #ifdef PIKE_MODULE_RELOC // If we have PIKE_MODULE_RELOC enabled, // we might need to map to a join node. // FIXME: Ought to use the non-relocate_module() fakeroot(). if(path == "/${PIKE_MODULE_PATH}" || has_prefix(path, "/${PIKE_MODULE_PATH}/")) { string tmp = path[21..]; array(dirnode) dirnodes = ({}); foreach(pike_module_path, string prefix) { string s2 = fakeroot(sizeof(tmp)? combine_path(prefix, tmp) : prefix); // do we have a mounted zip? if(fs_map[tmp]) tmp = combine_path(tmp, "modules"); if(master_file_stat(s2)) dirnodes += ({ dirnode(s2, handler) }); } resolv_debug("handle_import(%O, %O) => Found %d dirnodes\n", what, current_file, sizeof(dirnodes)); if (sizeof(dirnodes) > 1) return fc[path] = joinnode(dirnodes); if (sizeof(dirnodes)) return fc[path] = dirnodes[0]; return UNDEFINED; } #endif /* PIKE_MODULE_RELOC */ return fc[path] = dirnode(fakeroot(path), handler); } #endif /* 0 */ multiset no_resolv = (<>); //! Resolver of symbols not located in the program being compiled. class CompatResolver { //! Join node of the root modules for this resolver. joinnode root_module = joinnode(({instantiate_static_modules(predef::_static_modules)}), 0, 0, "predef::"); //! Lookup from handler module to corresponding root_module. mapping(object:joinnode) handler_root_modules = ([]); //! The pike system module path, not including any set by the user. array(string) system_module_path=({}); //! The complete module search path array(string) pike_module_path=({}); //! The complete include search path array(string) pike_include_path=({}); //! The complete program search path array(string) pike_program_path=({}); mapping(string:string) predefines = master()->initial_predefines; string ver; //! If we fail to resolv, try the fallback. //! //! Typical configuration: //! @pre{0.6->7.0->7.2-> ... ->master@} CompatResolver fallback_resolver; //! The CompatResolver is initialized with a value that can be //! casted into a "%d.%d" string, e.g. a version object. //! //! It can also optionally be initialized with a fallback resolver. protected void create(mixed version, CompatResolver|void fallback_resolver) { resolv_debug("CompatResolver(%O, %O)\n", version, fallback_resolver); ver=(string)version; #if 0 if (version) { root_module->symbol = ver + "::"; } #endif if (CompatResolver::fallback_resolver = fallback_resolver) { root_module->fallback_module = fallback_resolver->root_module; } predefines = initial_predefines; } //! 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; } //! 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}); } //! Add a directory to search for modules. //! //! This is the same as the command line option @tt{-M@}. //! //! @seealso //! @[remove_module_path()] //! //! @param path //! a string containing a path to search for Pike modules. May be a //! directory, or a path to a ZIP archive. If a ZIP archive path is //! provided, modules will be loaded from a directory, "modules" within //! the ZIP archive (see the subpath argument). //! //! @param subpath //! if path is a ZIP archive, this argument will determine the path within //! the archive to be searched. //! void add_module_path(string path, string|void subpath) { path=normalize_path(combine_path_with_cwd(path)); object s = file_stat(path); if(s && s->isreg) { object fs; catch(fs = resolv("Filesystem.Zip")(path)); if(fs) add_filesystem_handler(path, fs); if(!subpath) subpath = "modules"; path = combine_path(path, subpath); } root_module->add_path(path); pike_module_path = ({ path }) + (pike_module_path - ({ path })); } //! 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)); root_module->rem_path(tmp); pike_module_path -= ({ tmp }); } //! 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; } //! 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}); } //! Add a define (without arguments) which will be implicitly //! defined in @[cpp] calls. void add_predefine (string name, mixed value) { predefines[name] = value; } //! Remove a define from the set that are implicitly defined in //! @[cpp] calls. void remove_predefine (string name) { m_delete (predefines, name); } //! Returns a mapping with the current predefines. mapping get_predefines() { return predefines; } string evaluate_define(string def, string arguments) { mixed val = arguments ? predefines[def+"()"] : predefines[def]; if( callablep(val) ) { object C = resolv("Parser.C"); array args; if( arguments ) args = map( map(C.group(C.split(arguments))/({","}),C.simple_reconstitute), Builtin.string_trim); else args = ({}); val = val( @args ); } return (string)val; } //! Instantiate static modules in the same way that dynamic modules //! are instantiated. protected mapping(string:mixed) instantiate_static_modules(object|mapping static_modules) { mapping(string:mixed) res = ([]), joins = ([]); foreach(indices(static_modules), string name) { mixed val = static_modules[name]; if (!val->_module_value) val = val(); if(mixed tmp=val->_module_value) val=tmp; if(!has_value(name, '.')) res[name] = val; else { mapping(string:mixed) level = joins; string pfx; while(2 == sscanf(name, "%s.%s", pfx, name)) level = (level[pfx] || (level[pfx] = ([]))); level[name] = val; } } joinnode joinify(mapping m) { foreach(m; string n; mixed v) if(mappingp(v)) m[n]=joinify(v); return joinnode(({m})); }; foreach(joins; string n; mixed v) { if(mappingp(v)) v = joinify(v); if(res[n]) res[n] = joinnode(({res[n], v}), 0, 0, n); else res[n] = v; } return res; } //! mapping get_default_module() { resolv_debug ("%O->get_default_module()\n", this); /* 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(resolv("__default") && (x=resolv("__default.all_constants"))) x=x(); }; compat_major=saved_compat_major; compat_minor=saved_compat_minor; if(err) throw(err); return x; } // _static_modules -- default for global:: // current_handler->get_default_module()->_static_modules joinnode get_root_module(object|void current_handler) { if (!root_module) { error("get_root_module(%O): No default root module!\n", current_handler); } if (!current_handler) return root_module; joinnode node = handler_root_modules[current_handler]; if (node) return node; // Check for _static_modules. mixed static_modules = _static_modules; if (current_handler->get_default_module) { mapping(string:mixed) default_module = current_handler->get_default_module(); if (default_module) { static_modules = default_module["_static_modules"] || ([]); } } node = joinnode(({ // Kluge to get _static_modules to work at top level. ([ "_static_modules" : static_modules ]), instantiate_static_modules(static_modules), // Copy relevant stuff from the root module. @filter(root_module->joined_modules, lambda(mixed x) { return objectp(x) && x->is_resolv_dirnode; }) }), current_handler, root_module->fallback_module, "predef::"); return node; } //! mixed resolv_base(string identifier, string|void current_file, object|void current_handler) { // werror("Resolv_base(%O)\n",identifier); return get_root_module(current_handler)[identifier]; } //! Same as @[resolv], but throws an error instead of returning //! @[UNDEFINED] if the resolv failed. mixed resolv_or_error(string identifier, string|void current_file, void|object current_handler) { mixed res = resolv(identifier, current_file, current_handler); if(undefinedp(res)) error("Could not resolve %s.\n", identifier); return res; } //! mixed resolv(string identifier, string|void current_file, object|void current_handler) { resolv_debug("resolv(%O, %O)\n",identifier, current_file); INC_RESOLV_MSG_DEPTH(); // FIXME: Support having the cache in the handler? if( no_resolv[ identifier ] ) { DEC_RESOLV_MSG_DEPTH(); resolv_debug("resolv(%O, %O) => excluded\n",identifier, current_file); return UNDEFINED; } if (current_file && !stringp(current_file)) { error("resolv(%O, %O, %O): current_file is not a string!\n", identifier, current_file, current_handler); } array(string) tmp = identifier/"::"; mixed ret; if (sizeof(tmp) > 1) { string scope = tmp[0]; tmp = tmp[1]/"."; switch(scope) { case "predef": ret = all_constants(); break; default: if (sscanf(scope, "%d.%d%*s", int major, int minor) == 3) { // Versioned identifier. ret = get_compilation_handler(major, minor); if (ret) { mixed mod = ret->get_default_module(); if (mod && !undefinedp(mod = mod[tmp[0]])) { ret = mod; } else { ret = ret->resolv(tmp[0]); } tmp = tmp[1..]; break; } } error("resolv(%O, %O, %O): Unsupported scope: %O!\n", identifier, current_file, current_handler, scope); } } else { tmp = identifier/"."; ret = resolv_base(tmp[0], current_file, current_handler); tmp = tmp[1..]; } foreach(tmp,string index) { resolv_debug("indexing %O with %O...\n", ret, index); resolv_debug("indices(%O): %O\n", ret, indices(ret)); if (undefinedp(ret)) break; ret = ret[index]; } DEC_RESOLV_MSG_DEPTH(); #ifdef RESOLV_DEBUG if (undefinedp (ret)) resolv_debug("resolv(%O, %O) => not found\n",identifier, current_file); else resolv_debug("resolv(%O, %O) => found %O\n",identifier, current_file, ret); #endif /* RESOLV_DEBUG */ 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) { if(local_include) { if(IS_ABSOLUTE_PATH(f)) return combine_path(f); return combine_path_with_cwd(dirname(current_file), f); } else { foreach(pike_include_path, string path) { path=combine_path(path,f); if(master_file_stat(fakeroot(path))) return path; } if (fallback_resolver) { return fallback_resolver->handle_include(f, current_file, local_include); } } // Failed. return 0; } //! string read_include(string f) { AUTORELOAD_CHECK_FILE(f); if (array|object err = catch { return master_read_file (f); }) compile_cb_rethrow (err); } protected string _sprintf(int t) { return t=='O' && sprintf("CompatResolver(%O)",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; // Gets set to 1 if we're in async-mode (script->main() returned <0) private int(0..1) _async=0; //! Returns 1 if we´re in async-mode, e.g. if the main method has //! returned a negative number. int(0..1) asyncp() { return _async; } #if constant(thread_create) // this must be done in __init if someone inherits the master protected object _backend_thread=this_thread(); //! The backend_thread() function is useful to determine if you are //! the backend thread - important when doing async/sync protocols. //! This method is only available if thread_create is present. object backend_thread() { return _backend_thread; } #endif mapping(string:string) initial_predefines = ([]); protected mixed main_resolv(string sym, CompatResolver|void resolver) { mixed v = (resolver||this)->resolv(sym); if(!v) error("Could not resolve %s. " "(Perhaps the installed pike tree has been moved.)\n", sym); return v; }; //! 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. void _main(array(string(0..255)) orig_argv) { array(string) argv=copy_value(orig_argv); int debug,trace,run_tool; object tmp; string postparseaction=0; predefines = initial_predefines = Builtin._take_over_initial_predefines(); _pike_file_name = orig_argv[0]; _master_file_name = __FILE__; #if constant(thread_create) _backend_thread = this_thread(); #endif #ifndef NOT_INSTALLED { array parts = (getenv("PIKE_INCLUDE_PATH")||"")/PATH_SEPARATOR-({""}); int i = sizeof(parts); while(i) add_include_path(parts[--i]); parts = (getenv("PIKE_PROGRAM_PATH")||"")/PATH_SEPARATOR-({""}); i = sizeof(parts); while(i) add_program_path(parts[--i]); parts = (getenv("PIKE_MODULE_PATH")||"")/PATH_SEPARATOR-({""}); i = sizeof(parts); while(i) add_module_path(parts[--i]); } #endif // Some configure scripts depends on this format. string format_paths() { return ("master.pike...: " + (_master_file_name || __FILE__) + "\n" "Module path...: " + pike_module_path*"\n" " " + "\n" "Include path..: " + pike_include_path*"\n" " " + "\n" "Program path..: " + pike_program_path*"\n" " " + "\n"); }; Version cur_compat_ver; if(sizeof(argv)>1 && sizeof(argv[1]) && argv[1][0]=='-') { array q; tmp = main_resolv( "Getopt" ); int NO_ARG = tmp->NO_ARG; int MAY_HAVE_ARG = tmp->MAY_HAVE_ARG; int HAS_ARG = tmp->HAS_ARG; q=tmp->find_all_options(argv,({ ({"compat_version", HAS_ARG, ({"-V", "--compat"}), 0, 0}), ({"version", NO_ARG, ({"-v", "--version"}), 0, 0}), ({"dumpversion", NO_ARG, ({"--dumpversion"}), 0, 0}), ({"help", MAY_HAVE_ARG, ({"-h", "--help"}), 0, 0}), ({"features", NO_ARG, ({"--features"}), 0, 0}), ({"info", NO_ARG, ({"--info"}), 0, 0}), ({"execute", HAS_ARG, ({"-e", "--execute"}), 0, 0}), ({"debug_without", HAS_ARG, ({"--debug-without"}), 0, 0}), ({"preprocess", HAS_ARG, ({"-E", "--preprocess"}), 0, 0}), ({"modpath", HAS_ARG, ({"-M", "--module-path"}), 0, 0}), ({"ipath", HAS_ARG, ({"-I", "--include-path"}), 0, 0}), ({"ppath", HAS_ARG, ({"-P", "--program-path"}), 0, 0}), ({"showpaths", MAY_HAVE_ARG, ({"--show-paths"}), 0, 0}), ({"warnings", NO_ARG, ({"-w", "--warnings"}), 0, 0}), ({"nowarnings", NO_ARG, ({"-W", "--woff", "--no-warnings"}), 0, 0}), ({"autoreload", NO_ARG, ({"--autoreload"}), 0, 0}), ({"master", HAS_ARG, ({"-m"}), 0, 0}), ({"compiler_trace", NO_ARG, ({"--compiler-trace"}), 0, 0}), ({"assembler_debug",MAY_HAVE_ARG, ({"--assembler-debug"}), 0, 0}), ({"optimizer_debug",MAY_HAVE_ARG, ({"--optimizer-debug"}), 0, 0}), ({"debug", MAY_HAVE_ARG, ({"--debug"}), 0, 1}), ({"trace", MAY_HAVE_ARG, ({"--trace"}), 0, 1}), ({"ignore", MAY_HAVE_ARG, ({"-Dqdatplr"}), 0, 1}), ({"ignore", HAS_ARG, ({"-s"}), 0, 0}), ({"run_tool", NO_ARG, ({"-x"}), 0, 0}), ({"show_cpp_warn", NO_ARG, ({"--show-all-cpp-warnings","--picky-cpp"}), 0, 0}), }), 1); /* Parse -M and -I backwards */ for(int 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++; break; #endif case "debug_without": // FIXME: Disable loading of dumped modules? 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" ); break; default: no_resolv[ feature ] = 1; break; } } break; case "debug": debug+=(int)q[i][1]; break; 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 "nowarnings": want_warnings--; break; case "master": _master_file_name = q[i][1]; break; case "run_tool": run_tool = 1; break; case "show_cpp_warn": show_if_constant_errors = 1; break; } } cur_compat_ver = Version (compat_major, compat_minor); if (cur_compat_ver < lowestcompat) { werror("This Pike only supports compatibility down to %s.\n", (string)lowestcompat); cur_compat_ver = lowestcompat; compat_major = lowestcompat->major; compat_minor = lowestcompat->minor; } if (compat_major != -1) { object compat_master = get_compat_master (compat_major, compat_minor); } foreach(q, array opts) { switch(opts[0]) { case "dumpversion": write("%d.%d.%d\n", __REAL_MAJOR__, __REAL_MINOR__, __REAL_BUILD__); exit(0); case "version": exit(0, string_to_utf8(version() + " Copyright © 1994-2016 Linköping University\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 COPYRIGHT in the Pike distribution for more details.\n")); case "help": exit( 0, main_resolv("Tools.MasterHelp")->do_help(opts[1]) ); case "features": postparseaction="features"; break; case "info": postparseaction="info"; break; case "showpaths": if( stringp(opts[1]) ) { switch(opts[1]) { case "master": write( (_master_file_name || __FILE__)+"\n" ); break; case "module": write( (pike_module_path * ":")+"\n" ); break; case "include": write( (pike_include_path * ":")+"\n" ); break; case "program": write( (pike_program_path * ":")+"\n" ); break; default: exit(1, "Unknown path type %s\n", opts[1]); } exit(0); } exit(0, format_paths()); case "execute": main_resolv( "Gmp.bignum" ); argv = tmp->get_args(argv,1); program prog; mixed compile_err = catch {; if (intp (opts[1])) prog = compile_string ("mixed run() {}"); else { string code = opts[1]; while(sscanf(code, "%sCHAR(%1s)%s", code, string c, string rest)==3) code += c[0] + rest; prog = compile_string( "#define NOT(X) !(X)\n" "mixed run(int argc, array(string) argv){" + code + ";}"); } }; if (compile_err) { if (compile_err->is_cpp_or_compilation_error) { // Don't clutter the output with the backtrace for // compilation errors. exit (20, call_describe_error (compile_err)); } else throw (compile_err); } #if constant(_debug) if(debug) _debug(debug); #endif if(trace) trace = predef::trace(trace); mixed ret; mixed err = catch { // One reason for this catch is to get a new call to // eval_instruction in interpret.c so that the debug and // trace levels set above take effect in the bytecode // evaluator. ret = prog()->run(sizeof(argv),argv); }; predef::trace(trace); if (err) { handle_error (err); ret = 10; } if(stringp(ret)) { write(ret); if(ret[-1]!='\n') write("\n"); } if(!intp(ret) || ret<0) ret=0; exit(ret); case "preprocess": main_resolv( "Gmp.bignum" ); write(cpp(master_read_file(opts[1]),opts[1])); exit(0); case "compiler_trace": function(int:void) compiler_trace = main_resolv("Debug.compiler_trace"); if (compiler_trace) { compiler_trace(1); } break; case "assembler_debug": function(int:void) assembler_debug = main_resolv("Debug.assembler_debug"); if (assembler_debug) { assembler_debug((int)opts[1]); } break; case "optimizer_debug": function(int:void) optimizer_debug = main_resolv("Debug.optimizer_debug"); if (optimizer_debug) { optimizer_debug((int)opts[1]); } break; } } argv = tmp->get_args(argv,1); } else cur_compat_ver = Version (compat_major, compat_minor); switch (postparseaction) { case "features": write( main_resolv( "Tools.Install.features" )()*"\n"+"\n" ); exit(0); case "info": write("Software......Pike\n" "Version......."+version()+"\n" "WWW...........http://pike.lysator.liu.se/\n" "\n" "pike binary..."+_pike_file_name+"\n"+ format_paths() + "\n" "Features......"+ main_resolv( "Tools.Install.features" )()*"\n "+ "\n"); exit(0); } main_resolv( "Gmp.bignum" ); if(sizeof(argv)==1) { if(run_tool) { werror("Pike -x specificed without tool name.\n" "Available tools:\n"); mapping t = ([]); int i; object ts = main_resolv("Tools.Standalone", get_compilation_handler(compat_major, compat_minor)); foreach (indices(ts), string s) { mixed val = ts[s]; if (programp (val)) { object o = val(); if(!o->main || !o->description) continue; t[s] = o->description; i = max(i, sizeof(s)); } } foreach(sort(indices(t)), string s) werror(" %-"+i+"s %s\n", s, t[s]); exit(1); } main_resolv("Tools.Hilfe", get_compilation_handler(compat_major, compat_minor))->StdinHilfe(); exit(0); } else argv=argv[1..]; program prog; if(run_tool) { mixed err = catch { prog = main_resolv("Tools.Standalone." + argv[0], get_compilation_handler(compat_major, compat_minor)); }; if (err) exit(1, "Pike: Failed to load tool %s:\n" "%s\n", argv[0], stringp(err[0])?err[0]:call_describe_backtrace(err)); argv[0] = search(programs, prog) || argv[0]; } else { argv[0]=combine_path_with_cwd(argv[0]); mixed err = catch { prog=(program)argv[0]; }; if (err) { string fn = argv[0]; if( !file_stat(fn) ) { if( file_stat(fn+".pike") ) fn += ".pike"; else exit(1, "Could not find file %O.\n", fn); } if( !file_stat(fn)->isreg ) exit(1, "File %O is not a regular file.\n", fn); if( !master_read_file(fn) ) exit(1, "File %O is not readable. %m.\n", fn); if (objectp (err) && err->is_cpp_or_compilation_error) exit(1, "Pike: Failed to compile script.\n"); else exit(1, "Pike: Failed to compile script:\n" "%s", call_describe_backtrace(err)); } // Don't list the program with its real path in the programs // mapping, so that reverse lookups (typically by the codec) // always find the canonical "/main" instead. programs[argv[0]] = no_value; } programs["/main"] = prog; // FIXME: Can this occur at all? if(!prog) error("Pike: Couldn't find script to execute\n(%O)\n", argv[0]); #if constant(_debug) if(debug) _debug(debug); #endif if(trace) trace = predef::trace(trace); mixed ret; mixed err = catch { // The main reason for this catch is actually to get a new call // to eval_instruction in interpret.c so that the debug and // trace levels set above take effect in the bytecode evaluator. // Note that it won't work if there's another catch surrounding // this one. object script; script=prog(argv); if(!script->main) error("Error: %s has no main().\n", argv[0]); if (cur_compat_ver <= Version (8, 0)) ret = script->main(sizeof(argv),argv); else { mixed first_arg = __get_first_arg_type(_typeof(script->main)); // NB: first_arg may be zero eg in case main() ignores all args. if( first_arg && (typeof(argv) <= first_arg) ) { // argv accepted as first argument. ret=script->main(argv); } else ret=script->main(sizeof(argv),argv); } }; // Disable tracing. trace = predef::trace(trace); if (err) { handle_error (err); ret = 10; } if(!intp(ret)) exit(10, "Error: Non-integer value %O returned from main.\n", ret); if(ret >=0) exit([int]ret); _async=1; // Reenable tracing. trace = predef::trace(trace); while(1) { mixed err=catch { while(1) Builtin.__backend(3600.0); }; master()->handle_error(err); } } #if constant(thread_local) object inhibit_compile_errors = thread_local(); //! Set the compile error, warning and exception behaviour. //! //! @param behaviour //! The desired behaviour. One of: //! @mixed //! @type int(0..0) //! Output compilation errors and warnings to @tt{stderr@}. //! This is the default behaviour. //! @type int(1..1) //! Inhibit output of compilator diagnostics. //! @type function(string, int, string:void) //! Function to call for compilation errors. Compilation //! warnings and exceptions are inhibited. //! //! The function will be called with the same arguments //! as those passed to @[compile_error()]. //! @type CompilationHandler //! Compilation handler to use for diagnostics. //! @endmixed //! //! @note //! Note that the behaviour is thread local, and is not copied //! to new threads when they are created. //! //! @seealso //! @[get_inhibit_compile_errors()] void set_inhibit_compile_errors(mixed behaviour) { inhibit_compile_errors->set(behaviour); } //! Get the current compile error, warning and exception behaviour. //! //! See @[set_inhibit_compile_errors()] for details. //! //! @seealso //! @[set_inhibit_compile_errors()] 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) */ protected private function(string:string) _trim_file_name_cb=0; string trim_file_name(string s) { #ifdef PIKE_MODULE_RELOC s = relocate_module(s); #endif if(getenv("LONG_PIKE_ERRORS")) return s; if(getenv("SHORT_PIKE_ERRORS")) return BASENAME(s); if (_trim_file_name_cb) return _trim_file_name_cb(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(has_prefix (s, cwd)) return s[sizeof(cwd)..]; }; return s; } function(string:string) set_trim_file_name_callback(function(string:string) s) { function(string:string) f=_trim_file_name_cb; _trim_file_name_cb=s; return f; } //! This function is called whenever a compile error occurs. @[line] //! is zero for errors that aren't associated with any specific line. //! @[err] is not newline terminated. //! //! @seealso //! @[compile_warning()], @[compile_exception()], //! @[get_inhibit_compile_errors()], @[set_inhibit_compile_errors()], void compile_error(string file,int line,string err) { mixed val; if(! (val = get_inhibit_compile_errors() )) { werror( "%s:%s:%s\n",trim_file_name(file), line?(string)line:"-",narrowify_string(err) ); } else if(objectp(val) || programp(val) || functionp(val)) { if (objectp(val) && val->compile_error) { val->compile_error(file, line, err); } else if (callablep(val)) { val(file, line, err); } } } //! This function is called whenever a compile warning occurs. @[line] //! is zero for warnings that aren't associated with any specific //! line. @[err] is not newline terminated. //! //! @seealso //! @[compile_error()], @[compile_exception()], //! @[get_inhibit_compile_errors()], @[set_inhibit_compile_errors()], void compile_warning(string file,int line,string err) { mixed val; if(!(val = get_inhibit_compile_errors() )) { if(want_warnings) werror( "%s:%s: Warning: %s\n",trim_file_name(file), line?(string)line:"-",narrowify_string(err) ); } else if (objectp(val) && val->compile_warning) { ([function(string,int,string:void)]([object]val) ->compile_warning)(file, line, err); } } //! This function is called when an exception is caught during //! compilation. Its message is also reported to @[compile_error] if //! this function returns zero. //! //! @seealso //! @[compile_error()], @[compile_warning()], //! @[get_inhibit_compile_errors()], @[set_inhibit_compile_errors()], int compile_exception (array|object trace) { if (objectp (trace) && ([object]trace)->is_cpp_or_compilation_error) // Errors thrown by cpp(), compile() or a compile callback should // be reported as a normal compile error, so let the caller do // just that. return 0; if (mixed val = get_inhibit_compile_errors()) { if (objectp(val) && ([object]val)->compile_exception) return ([function(object:int)]([object]val) ->compile_exception)([object]trace); } else { handle_error (trace); return 1; } return 0; } //! 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. #if 0 // Ignore this warning for now since we do not yet have a weak // modifier, so it can't be avoided in a reasonable way. werror ("GC warning: Garbing cycle where destroy() will be called " "in arbitrary order:\n%{ %s\n%}", sprintf("%O", args[0][*])); #endif break; default: werror ("%s warning: %s %O\n", capitalize (where), what, args); } } protected object Charset; //! This function is called by cpp() when it wants to do //! character code conversion. string decode_charset(string data, string charset) { if (!Charset) { Charset = [object]resolv("Charset"); if (!Charset) compile_cb_error("Cannot handle charset - no Charset module found."); } if (mixed err = catch { object decoder = ([function(string:object)]Charset.decoder)(charset); return ([function(void:string)]([function(string:object)]decoder-> feed)(data)->drain)(); }) compile_cb_rethrow (err); } 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[..<1]; if (!intp(ident[stuff])) continue; // Already identified. if (objectp (stuff) || functionp (stuff) || programp (stuff)) ident[stuff]++; else if (arrayp (stuff)) { if (!ident[stuff]++) identify_stack += stuff; } else if (multisetp (stuff)) { if (!ident[stuff]++) identify_stack += indices([multiset]stuff); } else if (mappingp (stuff)) { if (!ident[stuff]++) identify_stack += indices([mapping]stuff) + values([mapping]stuff); } } } string describe_string (string m, int maxlen) { canclip++; if(sizeof(m) < maxlen) { string t = sprintf("%q", m); if (sizeof(t) < (maxlen + 2)) return t; t = 0; } clipped++; if(maxlen>10) { int h = (3*maxlen)/4; return sprintf("%q+[%d]+%q", m[..h-5], sizeof(m)-(maxlen-8), m[sizeof(m) - (maxlen - (h + 4))..]); } 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) { catch { if (stringp (ident[m])) return [string]ident[m]; else if (intp (ident[m]) && ident[m] > 1) ident[m] = "@" + identcount++; }; string res; if (catch (res=sprintf("%t",m))) res = "object"; // Object with a broken _sprintf(), probably. switch(res) { case "int": if (!m && undefinedp (m) == 1) return "UNDEFINED"; case "float": return (string)m; case "string": return describe_string ([string]m, maxlen); case "array": res = describe_array ([array]m, maxlen); break; case "mapping": res = describe_mapping ([mapping]m, maxlen); break; case "multiset": res = describe_multiset ([multiset]m, maxlen); break; case "function": if (string tmp=describe_function([function]m)) res = tmp; break; case "program": if(string tmp=describe_program([program]m)) res = tmp; break; default: /* object or type. */ if (catch { if(string tmp=sprintf("%O", m)) res = tmp; }) { // Extra paranoia case. res = sprintf("Instance of %O", _typeof(m)); } break; } // Objects may have _sprintfs that output wide characters, // and function names may be wide, etc... res = narrowify_string(res); 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; while(1) { 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) { string ret = z[..clip-1]*","; if(done || sizeof(ret)<=maxlen+1) { int tmp=sizeof(x)-clip-1; clipped=`+(0,@isclipped); if(tmp>=0) { clipped++; ret+=",,,"+tmp; } canclip++; return ret; } int last_newlen=len; int newlen; int clipsuggest; while(1) { int smallsize=0; int num_large=0; clipsuggest=0; for(int e=0;e<clip;e++) { 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; } newlen=num_large ? (maxlen-smallsize)/num_large : 0; if(newlen<8 || newlen >= last_newlen) break; last_newlen=newlen; } if(newlen < 8 && clip) {

pike.git/ lib/ master.pike.in > b2e923e3af6d0fae213d7574dd6d29e96dd6e6ab [Annotate]