pike.git/lib/master.pike.in:c25147b5890f5262324f22098202905e76b10479

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6422 6423 6424 6425 6426 6427 6428 6429 6430 6431 6432 6433 6434 6435 6436 6437 6438 6439 6440 6441 6442 6443 6444 6445 6446 6447 6448 6449 6450 6451 6452 6453 6454 6455 6456 6457 6458 6459 6460 6461 6462 6463 6464 6465 6466 6467 6468 6469 6470 6471 6472 6473 6474 6475 6476 6477 6478 6479 6480 6481 6482 6483 6484 6485 6486 6487 6488 6489 6490 6491 6492 6493 6494 6495 6496 6497 6498 6499 6500 6501 6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513 6514 6515 6516 6517 6518 6519 6520 6521 6522 6523 6524 // -*- 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__ //#charset iso-8859-1 // hardcoded, can not be changed //#pragma strict_types #pragma dynamic_dot //! @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 // Enables the out of date warning in low_findprog().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__) #define PATH_SEPARATOR ";" #else #define PATH_SEPARATOR ":" #endif #define UPDIR "../" //! @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 Should Pike complain about out of date compiled files.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; //! Major pike version to emulate. //! //! This is typically set via the option @expr{"-V"@}. //! //! @seealso //! @[compat_minor] int compat_major=-1; //! Minor pike version to emulate. //! //! This is typically set via the option @expr{"-V"@}. //! //! @seealso //! @[compat_major] int compat_minor=-1; //! Show compilation warnings from compilation of @[cpp()] //! @expr{#if constant()@} expressions. //! //! This is typically set via the option @expr{"--picky-cpp"@}. int show_if_constant_errors = 0; protected int _is_pike_master = 0; //! @decl int is_pike_master //! 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. int `is_pike_master() { return _is_pike_master; } void `is_pike_master=(int one) { _is_pike_master = one; if (one) { add_constants(); } } 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); function _werror = werror; if (!_werror || (_werror == locale_werror && !locale_werror_cache)) _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); __deprecated__ 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; //! @namespace predef:: //! 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 //! 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) { #if defined(__NT__) p=replace(p,"\\","/"); if(sscanf(p,"%[a-zA-Z]:%*c",string s)==2 && sizeof(s)==1) return 1; #define IS_ABSOLUTE_PATH is_absolute_path #else #define IS_ABSOLUTE_PATH(X) has_prefix((X),"/") #endif return has_prefix(p,"/"); } #if defined(__NT__) #define EXPLODE_PATH(X) (replace((X),"\\","/")/"/") #else #define EXPLODE_PATH(X) ((X)/"/") #endif //! 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) { array(string) r = EXPLODE_PATH(p); if(r[0] == "" && sizeof(p)) r[0] = "/"; return r; } #if !constant(dirname) string dirname(string x) { if(x=="") return ""; array(string) tmp = EXPLODE_PATH(x); if (x[0] == '/' && sizeof(tmp) < 3) return "/"; return tmp[..<1]*"/"; } #else /* dirname */ constant dirname = predef::dirname; #endif /* !dirname */ #if !constant(basename) string basename(string x) { array(string) tmp=EXPLODE_PATH(x); return tmp[-1]; #define BASENAME(X) (EXPLODE_PATH(X)[-1]) } #else /* basename */ constant basename = predef::basename; #define BASENAME(X) basename(X) #endif /* !basename */ #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 //! @[predef::CompilerEnvironment] that supports handlers. protected class CompilerEnvironment { //! inherit predef::CompilerEnvironment : OrigCompilerEnvironment; //! mixed resolv(string identifier, string filename, object|void handler, object|void compat_handler) { return master()->resolv(identifier, filename, handler, compat_handler); } //! program handle_inherit(string inh, string current_file, object|void handler, object|void compat_handler) { return master()->handle_inherit(inh, current_file, handler, compat_handler); } //! program handle_import(string module, string current_file, object|void handler, object|void compat_handler) { return master()->handle_import(module, current_file, handler, compat_handler); } object get_compilation_handler(int major, int minor) { return master()->get_compilation_handler(major, minor); } #if constant(_static_modules.Builtin.__HAVE_COMPILER_NO_HANDLERS__) //! class PikeCompiler { //! inherit ::this_program; //! object handler; object compat_handler; //! protected mixed apply_handler(string fun, mixed ... args) { function f; foreach(({ handler, compat_handler }), object o) { if (objectp(o) && functionp(f = predef::`->(o, fun))) { return f(@args); } } return CompilerEnvironment::`->(fun)(@args); } //! void report(SeverityLevel severity, string filename, int linenumber, string subsystem, string message, mixed ... extra_args) { foreach(({ handler, compat_handler }), object o) { if (!objectp(o)) continue; if (functionp(o->report)) { o->report(severity, filename, linenumber, subsystem, message, @extra_args); return; } if (severity < WARNING) continue; if (severity >= ERROR) { if (functionp(o->compile_error)) { o->compile_error(filename, linenumber, sizeof(extra_args)? sprintf(message, @extra_args): message); return; } } else { if (functionp(o->compile_warning)) { o->compile_warning(filename, linenumber, sizeof(extra_args)? sprintf(message, @extra_args): message); return; } } } CompilerEnvironment::report(severity, filename, linenumber, subsystem, message, @extra_args); } //! mixed resolv(string identifier) { return apply_handler(__func__, identifier, current_file, handler, compat_handler); } //! mapping(string:mixed)|object get_default_module() { /* FIXME: This function probably ought to merge the results from * both handlers. */ return apply_handler(__func__); } //! object get_compilation_handler(int major, int minor) { return apply_handler(__func__, major, minor); } //! program handle_inherit(string inh) { return apply_handler(__func__, inh, current_file, handler, compat_handler); } //! program handle_import(string module) { return apply_handler(__func__, module, current_file, handler, compat_handler); } //! void change_compiler_compatibility(int major, int minor) { if ((major == compat_major) && (minor == compat_minor)) { // Optimization: Already at this compat level. return; } if (((major == -1) && (minor == -1)) || ((major == __REAL_MAJOR__) && (minor == __REAL_MINOR__))) { if ((compat_major == __REAL_MAJOR__) && (compat_minor == __REAL_MINOR__)) { // Optimization again: Already at this compat level. return; } compat_handler = 0; } else { compat_handler = get_compilation_handler(major, minor); } ::change_compiler_compatibility(major, minor); } //! protected void create(string|void source, object|void handler, int|void major, int|void minor, program|void target, object|void placeholder) { this::handler = handler; ::create(source, UNDEFINED, major, minor, target, placeholder); } } #endif /* _static_modules.Builtin.__HAVE_COMPILER_NO_HANDLERS__ */ //! int compile_exception(mixed err) { function(mixed:int) fun = master()->compile_exception; return fun && fun(err); } //! string format_exception(mixed err) { return 0; } //! class CPP { //! inherit ::this_program; #if constant(_static_modules.Builtin.__HAVE_CPP_NO_HANDLERS__) //! object handler; object compat_handler; #endif //! protected mixed apply_handler(string fun, mixed ... args) { function f; foreach(({ handler, compat_handler }), object o) { if (objectp(o) && functionp(f = predef::`->(o, fun))) { return f(@args); } } return CompilerEnvironment::`->(fun)(@args); } //! @decl void report(SeverityLevel severity, @ //! string filename, int(1..) linenumber, @ //! string subsystem, @ //! sprintf_format message, sprintf_args ... extra_args) //! //! Report a diagnostic from the preprocessor. //! //! @param severity //! The severity of the diagnostic. //! //! @param filename //! @param linenumber //! Location which triggered the diagnostic. //! //! @param subsystem //! Typically @expr{"cpp"@}. //! //! @param message //! String with the diagnostic message, with optional //! @[sprintf()]-style formatting (if any @[extra_args]). //! //! @param extra_args //! Extra arguments to @[sprintf()]. //! //! The default implementation does the following: //! //! @ul //! @item //! If there's a handler which implements @[Reporter()->report()], //! call it with the same arguments. //! @item //! Otherwise if there's a handler which implements //! @[compile_warning()] or @[compile_error()] that matches //! @[severity], call it with suitable arguments. //! @item //! Otherwise if there's a compat handler, use it in the same //! manner as the handler. //! @item //! Otherwise fall back to calling @[::report()] with the //! same arguments. //! @endul //! //! @note //! In Pike 8.0 and earlier @[MasterObject()->report()] was not called. //! //! @seealso //! @[Reporter()->report()] void report(SeverityLevel severity, string filename, int linenumber, string subsystem, sprintf_format message, sprintf_args ... extra_args) { foreach(({ handler, compat_handler }), object o) { if (!objectp(o)) continue; if (functionp(o->report)) { o->report(severity, filename, linenumber, subsystem, message, @extra_args); return; } if (severity < WARNING) continue; if (severity >= ERROR) { if (functionp(o->compile_error)) { o->compile_error(filename, linenumber, sizeof(extra_args)? sprintf(message, @extra_args): message); return; } } else { if (functionp(o->compile_warning)) { o->compile_warning(filename, linenumber, sizeof(extra_args)? sprintf(message, @extra_args): message); return; } } } ::report(severity, filename, linenumber, subsystem, message, @extra_args); } //! object get_compilation_handler(int major, int minor) { return apply_handler(__func__, major, minor); } #if constant(_static_modules.Builtin.__HAVE_CPP_NO_HANDLERS__) //! mapping(string:string|function|object) get_predefines() { return apply_handler(__func__); } //! mixed resolv(string sym) { return apply_handler(__func__, sym, current_file, handler, compat_handler); } //! string handle_include(string header_file, string current_file, int(0..1) is_local_ref) { return apply_handler(__func__, header_file, current_file, is_local_ref); } //! string read_include(string filename) { return apply_handler(__func__, filename); } string decode_charset(string data, string charset) { return apply_handler(__func__, data, charset); } #endif string evaluate_define(string def, string|void arguments) { return apply_handler(__func__, def, arguments); } //! void change_cpp_compatibility(int major, int minor) { if ((compat_major == major) && (compat_minor == minor)) { return; } if (((major == __REAL_MAJOR__) && (minor == __REAL_MINOR__)) || (major < 0)) { compat_handler = UNDEFINED; } else { compat_handler = get_compilation_handler(major, minor); } ::change_cpp_compatibility(major, minor); } //! int compile_exception(mixed err) { return apply_handler(__func__, err); } //! string format_exception(mixed err) { string ret = apply_handler(__func__, err); if (ret) return ret; if (compile_exception(err)) { return ""; } return 0; } #if constant(_static_modules.Builtin.__HAVE_CPP_NO_HANDLERS__) //! @decl void create(string|void current_file, @ //! int|string|void charset, object|void handler, @ //! void|int compat_major, void|int compat_minor, @ //! void|int picky_cpp) //! @decl void create(mapping(string:mixed) options) //! //! Initialize the preprocessor. //! //! @param options //! If the first argument is a mapping, no other arguments may follow. //! Instead, they have to be given as members of the mapping (if wanted). //! The following members are then recognized: //! //! @mapping //! @member string "current_file" //! Name of the current file. It is used for generating //! #line directives and for locating include files. //! @member int|string "charset" //! Charset to use when processing @expr{data@}. //! @member object "handler" //! Compilation handler. //! @member int "compat_major" //! Sets the major pike version used for compat handling. //! @member int "compat_minor" //! Sets the minor pike version used for compat handling. //! @member int "picky_cpp" //! Generate more warnings. //! @member int "keep_comments" //! This option keeps @[cpp()] from removing comments. //! Useful in combination with the prefix feature below. //! @member string "prefix" //! If a prefix is given, only prefixed directives will be //! processed. For example, if the prefix is @expr{"foo"@}, then //! @expr{#foo_ifdef COND@} and @expr{foo___LINE__@} would be //! processed, @expr{#ifdef COND@} and @expr{__LINE__@} //! would not. //! @endmapping //! //! @param current_file //! If the @[current_file] argument has not been specified, //! it will default to @expr{"-"@}. //! //! @param charset //! Turn on automatic character set detection if @expr{1@}, otherwise //! specifies the character set used by the input. //! Defaults to @expr{"ISO-10646"@}. //! //! @seealso //! @[compile()] protected void create(mapping(string:mixed) options) { // werror("CPP(%O)\n", options); handler = options->handler; compat_handler = UNDEFINED; ::create(options); } protected variant void create(string|void current_file, int|string|void charset, object|void handler, void|int compat_major, void|int compat_minor, void|int picky_cpp) { mapping(string:mixed) options = ([]); #define CPP_OPT(X) do { if (X) { options->X = X; } } while(0) CPP_OPT(current_file); CPP_OPT(charset); CPP_OPT(handler); CPP_OPT(compat_major); CPP_OPT(compat_minor); CPP_OPT(picky_cpp); #undef CPP_OPT local::create(options); } #endif } #if constant(_static_modules.Builtin.__HAVE_COMPILER_NO_HANDLERS__) //! program compile(string source, object|void handler, int|void major, int|void minor, program|void target, object|void placeholder) { return PikeCompiler(source, handler, major, minor, target, placeholder)-> compile(); } #endif /* _static_modules.Builtin.__HAVE_COMPILER_NO_HANDLERS__ */ } protected CompilerEnvironment DefaultCompilerEnvironment = CompilerEnvironment(); #if constant(_static_modules.Builtin.__HAVE_COMPILER_NO_HANDLERS__) //! protected program compile(string source, object|void handler, int|void major, int|void minor, program|void target, object|void placeholder) { return DefaultCompilerEnvironment->compile(source, handler, major, minor, target, placeholder); } #endif /* _static_modules.Builtin.__HAVE_COMPILER_NO_HANDLERS__ */ //! @decl CompilationHandler get_active_compilation_handler() //! //! Returns the currently active compilation compatibility handler, or //! @tt{0@} (zero) if none is active. //! //! @note //! This function should only be used during a call of @[compile()]. //! //! @seealso //! @[get_active_error_handler()], @[compile()], //! @[master()->get_compilation_handler()], @[CompilationHandler] protected object get_active_compilation_handler() { CompilerEnvironment.PikeCompiler c = get_active_compiler(); return c && c->compat_handler; } //! @decl CompilationHandler get_active_error_handler() //! //! Returns the currently active compilation error handler //! (second argument to @[compile()]), or @tt{0@} (zero) if none //! is active. //! //! @note //! This function should only be used during a call of @[compile()]. //! //! @seealso //! @[get_active_compilation_handler()], @[compile()], @[CompilationHandler] protected object get_active_error_handler() { CompilerEnvironment.PikeCompiler c = get_active_compiler(); return c && c->handler; } //! protected string cpp(string data, mapping|string|void current_file, int|string|void charset, object|void handler, void|int compat_major, void|int compat_minor, void|int picky_cpp) { CompilerEnvironment.CPP cpp_obj = DefaultCompilerEnvironment->CPP(current_file, charset, handler || UNDEFINED, compat_major, compat_minor, picky_cpp); cpp_obj->init_pike_cpp(); return cpp_obj->high_cpp(data); } //! 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; } //! @endnamespace //! Read a file from the master filesystem. //! //! The master filesystem defaults to the system filesystem, //! but additional mountpoints may be added via //! @[add_filesystem_handler()]. //! //! All file I/O performed by the @[MasterObject] is performed //! via this function and its related functions. //! //! @seealso //! @[add_filesystem_handler()], @[find_handler_for_path()], //! @[master_get_dir()], @[master_file_stat()] 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) { #ifdef PIKE_MODULE_RELOC /* This is necessary to find compat modules... */ if (has_prefix(paths[0], "/${PIKE_MODULE_PATH}/"+UPDIR)) return "/${PIKE_MODULE_PATH}/"+combine_path(paths[0][21..],@paths[1..]-({""})); #endif 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"); //! //! @seealso //! @[find_handler_for_path()] mixed add_filesystem_handler(string mountpoint, object /*Filesystem.Base*/ filesystem) { mixed rv = fs_map[mountpoint]; fs_map[mountpoint] = filesystem; return rv; } //! Return the mountpoint for the filesystem handler handling the //! @[file] (if any). //! //! @seealso //! @[add_filesystem_handler()] 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 //! @namespace predef:: //! @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 > 0) { 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 if (force_update < 0) return environment; } 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); } } //! 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); } //! 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 } //! @endnamespace //! 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_lineno (object handler, string file, int lineno, string msg, mixed ... args) { if (sizeof (args)) msg = sprintf (msg, @args); msg = trim (msg); if (handler->?compile_warning) handler->compile_warning (file, lineno, msg); else if (master()->compile_warning) master()->compile_warning (file, lineno, msg); else compile_warning (file, lineno, msg); } protected void call_compile_warning (object handler, string file, string msg, mixed ... args) { call_compile_warning_lineno(handler, file, 0, msg, @args); } #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; } protected bool is_joinnode(mixed o) { return objectp(o) && object_program(o)->is_resolv_joinnode; } protected bool is_dirnode(mixed o) { return objectp(o) && object_program(o)->is_resolv_dirnode; } //! 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 (is_joinnode(mod)) mods = mod->joined_modules; else mods = ({ mod }); foreach (mods;; object mod) { if (is_dirnode(mod)) 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 (is_joinnode(obj)) obj = obj->joined_modules[0]; // FIXME: check for multiples if (is_dirnode(obj)) 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 (is_dirnode(n) || is_joinnode(n)) n->delete_value (p); fname = dirname (fname); if ( fname!="" && objectp (n = fc[fname]) ) if (is_dirnode(n)) // 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; } #ifdef PIKE_MODULE_RELOC /* This is necessary to find compat modules... */ if (!has_prefix(pname, "/${PIKE_MODULE_PATH}/"+UPDIR)) #endif 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 function is called in runtime check_types mode (@tt{-rt@}), //! when encountering a soft cast to an attributed type. //! //! @param value //! Value that is about to receive the attribute. //! //! @param attribute //! Type attribute to validate. //! //! @returns //! Returns one of: //! @int //! @value 1 //! If the attribute is valid for the value. //! @value 0 //! If the attribute is not valid for the value. //! @value UNDEFINED //! If the attribute is unsupported. //! @endint //! //! The default master implements validation of the @expr{"utf8"@} //! attribute. optional int(0..1) handle_attribute(mixed value, string attribute) { switch(attribute) { #if constant(validate_utf8) case "utf8": return stringp(value) && validate_utf8(value, 3); #endif } return UNDEFINED; } /* This array contains the names of the functions * that a replacing master-object may want to override. */ constant master_efuns = ({ "error", #if !constant(basename) "basename", #endif #if !constant(dirname) "dirname", #endif "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", "zero", "getenv", "putenv", #ifdef GETCWD_CACHE "cd", "getcwd", #endif }); //! 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 //! @namespace predef:: //! //! This is the default namespace and contains lots of global symbols. //! Boolean datatype. enum bool { false=0, true=1 }; //! Zero datatype. typedef int(0..0) zero; //! @decl int write(string fmt, mixed ... args) //! Writes a string on stdout. Works just like @[Stdio.File.write] //! on @[Stdio.stdout]. //! @decl int werror(string fmt, mixed ... args) //! Writes a string on stderr. Works just like @[Stdio.File.write] //! on @[Stdio.stderr]. //! @decl array random(mapping m) //! @decl float random(float max) //! @decl int random(int max) //! @decl mixed random(object o) //! @decl mixed random(array|multiset x) //! //! Get a random value generated by the default @[RandomSystem]. //! //! @seealso //! @[RandomSystem()->random()], @[random_string()] //! @decl string random_string(int len) //! //! Get a string of random characters @expr{0..255@} with the length @[len] //! from the default @[RandomSystem]. //! //! @seealso //! @[RandomSystem()->random_string()], @[random()] //! @decl int cp(string from, string to) //! //! Copies the file @[from] to the new position @[to]. This is an //! alias for @[Stdio.cp]. /* Note that add_constants() and create() are called * before add_precompiled_program(). */ protected void add_constants() { #if constant(_static_modules.Builtin.__HAVE_COMPILER_NO_HANDLERS__) add_constant("compile", compile); #endif /* _static_modules.Builtin.__HAVE_COMPILER_NO_HANDLERS__ */ add_constant("get_active_compilation_handler", get_active_compilation_handler); add_constant("get_active_error_handler", get_active_error_handler); add_constant("CompilerEnvironment", CompilerEnvironment); add_constant("DefaultCompilerEnvironment", DefaultCompilerEnvironment); add_constant("cpp", cpp); 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); werror = locale_werror; 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); } protected void create() { add_constants(); #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; } //! @endnamespace //! 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; void try_issue_deprecation_warning(object compilation_handler) { if (object active_compiler = get_active_compiler()) { if (!active_compiler->suppress_deprecation_warnings()) { call_compile_warning_lineno(compilation_handler, active_compiler->current_file, active_compiler->current_line, "Using a deprecated value."); } } } //! 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=([]); mapping(string:int(0..1)) deprecated_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=([]); deprecated_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])) { mixed t; DEC_RESOLV_MSG_DEPTH(); resolv_debug ("dirnode(%O)->ind(%O) => found %O\n", dirname, index, o); // TODO:: The exception seems to be Tools.Standalone.module, which // neither fulfills functionp(), objectp(), nor programp(), though // typeof_identifier() works on it directly. // We should thus find a way for detecting things to directly use // typeof_identifier on without calling it inside of catch. if (objectp(module)) t = typeof_identifier(object_program(module), index); if (t && deprecated_typep(t)) { deprecated_cache[index] = 1; try_issue_deprecation_warning(compilation_handler); } 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) { if (deprecated_cache[index]) try_issue_deprecation_warning(compilation_handler); 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", "identifier_deprecatedp" >)[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; } int(0..1) identifier_deprecatedp(string index) { if (has_index(cache, index) || deprecated_cache[index]) return deprecated_cache[index]; safe_index(index); return deprecated_cache[index]; } 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); m_delete (deprecated_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=([]); mapping(string:int(0..1)) deprecated_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 = ([]); deprecated_cache = ([]); } void rem_path(string path) { path = combine_path(getcwd(), path); joined_modules = filter(joined_modules, lambda(dirnode node) { return !is_dirnode(node) || (node->dirname != path); }); cache = ([]); deprecated_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 (is_dirnode(ret) || is_joinnode(ret)) { // Only join directorynodes (or joinnodes). res += ({ ret }); if (o->identifier_deprecatedp(index)) deprecated_cache[index] = 1; } else { DEC_RESOLV_MSG_DEPTH(); resolv_debug ("joinnode(%O)->ind(%O) => found %O\n", joined_modules, index, ret); if (objectp(o) && o->identifier_deprecatedp(index)) { deprecated_cache[index] = 1; try_issue_deprecation_warning(compilation_handler); } 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) { if (deprecated_cache[index]) try_issue_deprecation_warning(compilation_handler); 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", "identifier_deprecatedp" >)[index] ) return ::`->(index); return `[](index); } int(0..1) identifier_deprecatedp(string index) { if (has_index(cache, index) || deprecated_cache[index]) return deprecated_cache[index]; `[](index); return deprecated_cache[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); m_delete (deprecated_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 (is_dirnode(o) || is_joinnode(o)) o->delete_value (val); else if (string name = mappingp (o) && search (o, val)) m_delete (o, name); } } protected int `== (mixed other) { // NB: Index the program instead of the object to avoid issues // with modules overloading lfun::`->() with stuff that has // side-effects (here's looking at you Calendar.Events). return is_joinnode(other) && 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) { 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. string tmp; array(string) paths; if(path == "/${PIKE_MODULE_PATH}" || has_prefix(path, "/${PIKE_MODULE_PATH}/")) { tmp = path[21..]; paths = pike_module_path; } else { tmp = 0; paths = ({ path }); } foreach(paths, string prefix) { path = (tmp && sizeof(tmp)? combine_path(prefix, tmp) : prefix); auto path_stat = file_stat(path); if (!path_stat && tmp) continue; #else auto path_stat = file_stat(path); #endif /* PIKE_MODULE_RELOC */ if (!path_stat) compile_cb_error("Failed to stat file: %O\n", path); if (path_stat->isreg) { node->joined_modules += ({ low_cast_to_object(path, current_file, current_handler) }); } else if (path_stat->isdir) { node->add_path(path); } #ifdef PIKE_MODULE_RELOC } #endif /* PIKE_MODULE_RELOC */ 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; } //! 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; } //! Return the default module for the @[CompatResolver]. //! //! This is the mapping that corresponds to the @[predef::] //! name space for the compatibility level, and is the //! value returned by @[all_constants()] for the same. 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 ]

pike.git/ lib/ master.pike.in > c25147b5890f5262324f22098202905e76b10479 [Annotate]