pike.git/src/program.c:3e9a46d616d06be04f95969ad0452dbec80587e5

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For copyright information see COPYRIGHT. ||| Pike is distributed as GPL (General Public License) ||| See the files COPYING and DISCLAIMER for more information. \*/ /**/ #include "global.h" RCSID("$Id: program.c,v 1.400 2002/01/16 02:54:18 nilsson Exp $"); #include "program.h" #include "object.h" #include "dynamic_buffer.h" #include "pike_types.h" #include "stralloc.h" #include "las.h" #include "language.h" #include "lex.h" #include "pike_macros.h" #include "fsort.h" #include "pike_error.h" #include "docode.h" #include "interpret.h" #include "hashtable.h" #include "main.h" #include "gc.h" #include "threads.h" #include "constants.h" #include "operators.h" #include "builtin_functions.h" #include "stuff.h" #include "mapping.h" #include "cyclic.h" #include "security.h" #include "pike_types.h" #include "opcodes.h" #include "version.h" #include "block_alloc.h" #include "pikecode.h" #include <errno.h> #include <fcntl.h> #undef ATTRIBUTE #define ATTRIBUTE(X) static void exit_program_struct(struct program *); static size_t add_xstorage(size_t size, size_t alignment, ptrdiff_t modulo_orig); #undef EXIT_BLOCK #define EXIT_BLOCK(P) exit_program_struct( (P) ) #undef COUNT_OTHER #define COUNT_OTHER() do{ \ struct program *p; \ for(p=first_program;p;p=p->next) \ { \ size+=p->total_size; \ } \ }while(0) BLOCK_ALLOC(program, 104); /* #define COMPILER_DEBUG */ /* #define PROGRAM_BUILD_DEBUG */ #ifdef COMPILER_DEBUG #define CDFPRINTF(X) fprintf X #else /* !COMPILER_DEBUG */ #define CDFPRINTF(X) #endif /* COMPILER_DEBUG */ /* * These two values should probably be fine-tuned, but doing so * more or less requires running a predictable 'typical' application * and testing different hashsizes and tresholds. I tried to do it * mathematically by measuring the extremes (no cache hits, 100% * cache hits etc.) but it seems that the processor cache becomes * exhausted in some of my measurements, which renders my mathematical * model useless. * * Further measurements seems to indicate that this cache can slow * things down a bit if the hit/miss rate is not fairly high. * For normal applications, the hitrate is most likely well over 90%, * but that should be verified. * - Holistiska Centralbyrån (Hubbe) */ /* Define the size of the cache that is used for method lookup. */ /* A value of zero disables this cache */ #define FIND_FUNCTION_HASHSIZE 15013 /* Programs with less methods will not use the cache for method lookups.. */ #define FIND_FUNCTION_HASH_TRESHOLD 9 #define DECLARE #include "compilation.h" struct pike_string *this_program_string=0; char *lfun_names[] = { "__INIT", "create", "destroy", "`+", "`-", "`&", "`|", "`^", "`<<", "`>>", "`*", "`/", "`%", "`~", "`==", "`<", "`>", "__hash", "cast", "`!", "`[]", "`[]=", "`->", "`->=", "_sizeof", "_indices", "_values", "`()", "``+", "``-", "``&", "``|", "``^", "``<<", "``>>", "``*", "``/", "``%", "`+=", "_is_type", "_sprintf", "_equal", "_m_delete", "_get_iterator", }; struct pike_string *lfun_strings[NELEM(lfun_names)]; static struct mapping *lfun_ids; /* mapping(string:type) */ static struct mapping *lfun_types; static char *raw_lfun_types[] = { tFuncV(tNone,tVoid,tVoid), /* "__INIT", */ tFuncV(tNone,tZero,tVoid), /* "create", */ tFuncV(tNone,tVoid,tVoid), /* "destroy", */ tFuncV(tNone,tZero,tMix), /* "`+", */ tFuncV(tNone,tZero,tMix), /* "`-", */ tFuncV(tNone,tZero,tMix), /* "`&", */ tFuncV(tNone,tZero,tMix), /* "`|", */ tFuncV(tNone,tZero,tMix), /* "`^", */ tFuncV(tZero,tVoid,tMix), /* "`<<", */ tFuncV(tZero,tVoid,tMix), /* "`>>", */ tFuncV(tNone,tZero,tMix), /* "`*", */ tFuncV(tNone,tZero,tMix), /* "`/", */ tFuncV(tNone,tZero,tMix), /* "`%", */ tFuncV(tNone,tVoid,tMix), /* "`~", */ tFuncV(tMix,tVoid,tInt), /* "`==", */ tFuncV(tMix,tVoid,tInt), /* "`<", */ tFuncV(tMix,tVoid,tInt), /* "`>", */ tFuncV(tNone,tVoid,tInt), /* "__hash", */ tFuncV(tString,tVoid,tMix), /* "cast", */ tFuncV(tNone,tVoid,tInt), /* "`!", */ tFuncV(tZero,tVoid,tMix), /* "`[]", */ tFuncV(tZero tSetvar(0,tZero),tVoid,tVar(0)), /* "`[]=", */ tFuncV(tStr,tVoid,tMix), /* "`->", */ tFuncV(tStr tSetvar(0,tZero),tVoid,tVar(0)), /* "`->=", */ tFuncV(tNone,tVoid,tInt), /* "_sizeof", */ tFuncV(tNone,tVoid,tArray), /* "_indices", */ tFuncV(tNone,tVoid,tArray), /* "_values", */ tFuncV(tNone,tZero,tMix), /* "`()", */ tFuncV(tNone,tZero,tMix), /* "``+", */ tFuncV(tNone,tZero,tMix), /* "``-", */ tFuncV(tNone,tZero,tMix), /* "``&", */ tFuncV(tNone,tZero,tMix), /* "``|", */ tFuncV(tNone,tZero,tMix), /* "``^", */ tFuncV(tZero,tVoid,tMix), /* "``<<", */ tFuncV(tZero,tVoid,tMix), /* "``>>", */ tFuncV(tNone,tZero,tMix), /* "``*", */ tFuncV(tNone,tZero,tMix), /* "``/", */ tFuncV(tNone,tZero,tMix), /* "``%", */ tFuncV(tZero,tVoid,tMix), /* "`+=", */ tFuncV(tStr,tVoid,tInt), /* "_is_type", */ tFuncV(tInt tOr(tMap(tStr,tInt),tVoid),tVoid,tStr), /* "_sprintf", */ tFuncV(tMix,tVoid,tInt), /* "_equal", */ tFuncV(tZero,tVoid,tMix), /* "_m_delete", */ tFuncV(tNone,tVoid,tObj), /* "_get_iterator", */ }; /*! @module lfun:: *! *! @endmodule */ /*! @decl void lfun::__INIT() *! *! Global variable initialization. *! *! This function is called just before @[lfun::create()] when *! an object is instanciated. *! *! @note *! This function is generated automatically by the compiler, *! and can not be overloaded. *! *! @seealso *! @[lfun::create()] */ /*! @decl void lfun::create(zero ... args) *! *! Object creation callback. *! *! This function is called right after @[lfun::__INIT()]. *! *! @[args] will be the arguments passed when the program was called. *! *! @note *! In Pike 7.2 and later this function can be created implicitly *! by the compiler using the new syntax: *! @code{ *! class Foo(int foo) { *! int bar; *! } *! @} *! In the above case an implicit @[lfun::create()] will be created, *! and it will be equvivalent to: *! @code{ *! class Foo { *! int foo; *! int bar; *! static void create(int foo) *! { *! local::foo = foo; *! } *! } *! @} *! *! @seealso *! @[lfun::__INIT()], @[lfun::destroy()] */ /*! @decl void lfun::destroy() *! *! Object destruction callback. *! *! This function is called by @[destruct()] right before *! it will zero all the object variables, and destroy the object. *! *! @note *! Note that it will also be called on implicit destruct, eg *! when there are no more references to the object, or when *! the garbage-collector decides to destruct the object. *! *! @seealso *! @[lfun::create()], @[destruct()] */ /*! @decl mixed lfun::`+(zero ... args) *! *! Left associative addition operator callback. *! *! @seealso *! @[lfun::``+()], @[`+()] */ /*! @decl mixed lfun::`-(zero ... args) *! *! Left associative subtraction operator callback. *! *! @seealso *! @[lfun::``-()], @[`-()] */ /*! @decl mixed lfun::`&(zero ... args) *! *! Left associative and operator callback. *! *! @seealso *! @[lfun::``&()], @[`&()] */ /*! @decl mixed lfun::`|(zero ... args) *! *! Left associative or operator callback. *! *! @seealso *! @[lfun::``|()], @[`|()] */ /*! @decl mixed lfun::`^(zero ... args) *! *! Left associative exclusive or operator callback. *! *! @seealso *! @[lfun::``^()], @[`^()] */ /*! @decl mixed lfun::`<<(zero arg) *! *! Left associative left shift operator callback. *! *! @seealso *! @[lfun::``<<()], @[`<<()] */ /*! @decl mixed lfun::`>>(zero arg) *! *! Left associative right shift operator callback. *! *! @seealso *! @[lfun::``>>()], @[`>>()] */ /*! @decl mixed lfun::`*(zero ... args) *! *! Left associative multiplication operator callback. *! *! @seealso *! @[lfun::``*()], @[`*()] */ /*! @decl mixed lfun::`/(zero ... args) *! *! Left associative division operator callback. *! *! @seealso *! @[lfun::``/()], @[`/()] */ /*! @decl mixed lfun::`%(zero ... args) *! *! Left associative modulo operator callback. *! *! @seealso *! @[lfun::``%()], @[`%()] */ /*! @decl mixed lfun::`~() *! *! Inversion operator callback. *! *! @seealso *! @[`~()] */ /*! @decl int(0..1) lfun::`==(mixed arg) *! *! Equality operator callback. *! *! @seealso *! @[`==()] */ /*! @decl int(0..1) lfun::`<(mixed arg) *! *! Less than operator callback. *! *! @seealso *! @[`<()] */ /*! @decl int(0..1) lfun::`>(mixed arg) *! *! Greater than operator callback. *! *! @seealso *! @[`>()] */ /*! @decl int lfun::__hash() *! *! Hashing callback. *! *! This function gets called by various mapping operations when the *! object is used as index in a mapping. */ /*! @decl mixed lfun::cast(string requested_type) *! *! Cast operator callback. *! *! @param requested_type *! Type to cast to. *! *! @returns *! Expected to return the object value-casted (converted) to *! the type described by @[requested_type]. *! *! @note *! The argument is currently a string with the name *! of the type, but might in the future be a value of the type type. *! *! @note *! Currently casting between object types is a noop. *! *! @note *! If the returned value is not deemed to be of the requested type *! a runtime error may be thrown. */ /*! @decl int lfun::`!() *! *! Not operator callback. *! *! @returns *! Returns non-zero if the object should be evaluated as false, *! and @tt{0@} (zero) otherwise. *! *! @seealso *! @[`!()] */ /*! @decl mixed lfun::`[](zero arg1, zero|void arg2) *! *! Index/range operator callback. *! *! @seealso *! @[`[]()] */ /*! @decl mixed lfun::`[]=(zero arg1, zero arg2) *! *! Index assignment operator callback. *! *! @seealso *! @[`[]=()], @[lfun::`->=()] */ /*! @decl mixed lfun::`->(string arg) *! *! Arrow index operator callback. *! *! @seealso *! @[`->()] */ /*! @decl mixed lfun::`->=(string arg1, zero arg2) *! *! Arrow index assign operator callback. *! *! @seealso *! @[`->=()], @[lfun::`[]=()] */ /*! @decl int lfun::_sizeof() *! *! Sizeof operator callback. *! *! Called by @[sizeof()] to determine the number of elements *! in an object. If this function is not present, the number *! of public symbols in the object will be returned. *! *! @returns *! Expected to return the number of valid indices in the object. *! *! @seealso *! @[sizeof()] */ /*! @decl array lfun::_indices() *! *! Indices operator callback. *! *! @returns *! Expected to return an array with the valid indices in the object. *! *! @seealso *! @[indices()], @[lfun::_values()] */ /*! @decl array lfun::_values() *! *! Values operator callback. *! *! @returns *! Expected to return an array with the values corresponding to *! the indices returned by @[lfun::_indices()]. *! *! @seealso *! @[values()], @[lfun::_indices()] */ /*! @decl mixed lfun::`()(zero ... args) *! *! Function call operator callback. *! *! @seealso *! @[`()] */ /*! @decl mixed lfun::``+(zero ... args) *! *! Right associative addition operator callback. *! *! @seealso *! @[lfun::`+()], @[`+()] */ /*! @decl mixed lfun::``-(zero ... args) *! *! Right associative subtraction operator callback. *! *! @seealso *! @[lfun::`-()], @[`-()] */ /*! @decl mixed lfun::``&(zero ... args) *! *! Right associative and operator callback. *! *! @seealso *! @[lfun::`&()], @[`&()] */ /*! @decl mixed lfun::``|(zero ... args) *! *! Right associative or operator callback. *! *! @seealso *! @[lfun::`|()], @[`|()] */ /*! @decl mixed lfun::``^(zero ... args) *! *! Right associative exclusive or operator callback. *! *! @seealso *! @[lfun::`^()], @[`^()] */ /*! @decl mixed lfun::``<<(zero arg) *! *! Right associative left shift operator callback. *! *! @seealso *! @[lfun::`<<()], @[`<<()] */ /*! @decl mixed lfun::``>>(zero arg) *! *! Right associative right shift operator callback. *! *! @seealso *! @[lfun::`>>()], @[`>>()] */ /*! @decl mixed lfun::``*(zero ... args) *! *! Right associative multiplication operator callback. *! *! @seealso *! @[lfun::`*()], @[`*()] */ /*! @decl mixed lfun::``/(zero ... args) *! *! Right associative division operator callback. *! *! @seealso *! @[lfun::`/()], @[`/()] */ /*! @decl mixed lfun::``%(zero ... args) *! *! Right associative modulo operator callback. *! *! @seealso *! @[lfun::`%()], @[`%()] */ /*! @decl mixed lfun::`+=(zero arg) *! *! Self increment operator callback. *! *! @seealso *! @[`+()], @[lfun::`+()] */ /*! @decl int(0..1) lfun::_is_type(string basic_type) *! *! Type comparison callback. *! *! Called by the cast operator to determine if an object *! simulates a basic type. *! *! @param basic_type *! One of: *! @string *! @value "array" *! @value "float" *! @value "function" *! @value "int" *! @value "mapping" *! @value "multiset" *! @value "object" *! @value "program" *! @value "string" *! @value "type" *! @value "void" *! @value "zero" *! @endstring *! *! The following five shouldn't occurr, but are here for completeness: *! @string *! @value "lvalue" *! @value "mapping_data" *! @value "object storage" *! @value "pike_frame" *! @value "unknown" *! @endstring *! *! @returns *! Expected to return @tt{1@} if the object is to be regarded as a *! simulation of the type specified by @[basic_type]. *! *! @note *! The argument is currently a string with the name *! of the type, but might in the future be a value of the type type. */ /*! @decl string lfun::_sprintf(int conversion_type, @ *! mapping(string:int)|void params) *! *! Sprintf callback. *! *! This method is called by @[sprintf()] to print objects. If it is *! not present, printing of the object will not be supported for any *! conversion-type except for the @tt{%O@}-conversion-type, which *! will output @tt{"object"@}. *! *! @param conversion_type *! One of: *! @int *! @value 'b' *! Signed binary integer. *! @value 'd' *! Signed decimal integer. *! @value 'u' *! Unsigned decimal integer. *! @value 'o' *! Signed octal integer. *! @value 'x' *! Lowercase signed hexadecimal integer. *! @value 'X' *! Uppercase signed hexadecimal integer. *! @value 'c' *! Character. If a fieldsize has been specified this will output *! the low-order bytes of the integer in network byte order. *! @value 'f' *! Float. *! @value 'g' *! Heuristically chosen representation of float. *! @value 'G' *! Like @tt{%g@}, but uses uppercase @tt{E@} for exponent. *! @value 'e' *! Exponential notation float. *! @value 'E' *! Like @tt{%e@}, but uses uppercase @tt{E@} for exponent. *! @value 's' *! String. *! @value 'O' *! Any value (debug style). *! @value 't' *! Type of the argument. *! @endint *! *! @param params *! Conversion parameters. The following parameters may be supplied: *! @mapping *! @member int "precision" *! Precision. *! @member int "width" *! Field width. *! @member int(1..1) "flag_left" *! Indicates that the output should be left-aligned. *! @member int "indent" *! Indentation level in @tt{%O@}-mode. *! @endmapping *! *! @returns *! Is expected to return a string describing the object formatted *! according to @[conversion_type]. *! *! @note *! @[_sprintf()] is currently not called for the following *! conversion-types: *! @int *! @value 'F' *! Binary IEEE representation of float (@tt{%4F@} gives *! single precision, @tt{%8F@} gives double precision.) *! @endint *! *! @seealso *! @[sprintf()] */ /*! @decl int lfun::_equal(mixed arg) *! *! Equal callback. *! *! @seealso *! @[equal()], @[lfun::`==()] */ /*! @decl mixed lfun::_m_delete(mixed arg) *! *! Mapping delete callback. *! *! @seealso *! @[m_delete()] */ /*! @decl object lfun::_get_iterator() *! *! Iterator creation callback. *! *! @returns *! Should return an object that implements the iterator API: *! @dl *! @item *! @[lfun::`!()] should return @tt{0@} (zero) when not at end of stream, *! and @tt{1@} at end of stream. *! @item *! @[lfun::`+=()] should advance the specified number of steps. *! @item *! @[index()] should return the current index. *! @item *! @[value()] should return the current value. *! @enddl *! *! @seealso *! @[Iterator], @[foreach()] */ struct program *first_program = 0; static int current_program_id = PROG_DYNAMIC_ID_START; struct program *null_program=0; struct object *error_handler=0; struct object *compat_handler=0; struct program *gc_internal_program = 0; static struct program *gc_mark_program_pos = 0; int compilation_depth=-1; dynamic_buffer used_modules; static struct mapping *resolve_cache=0; int get_small_number(char **q); /* So what if we don't have templates? / Hubbe */ #ifdef PIKE_DEBUG #define CHECK_FOO(NUMTYPE,TYPE,NAME) \ if(Pike_compiler->malloc_size_program-> PIKE_CONCAT(num_,NAME) < Pike_compiler->new_program-> PIKE_CONCAT(num_,NAME)) \ fatal("Pike_compiler->new_program->num_" #NAME " is out of order\n"); \ if(Pike_compiler->new_program->flags & PROGRAM_OPTIMIZED) \ fatal("Tried to reallocate fixed program.\n") #else #define CHECK_FOO(NUMTYPE,TYPE,NAME) #endif #ifndef RELOCATE_program #define RELOCATE_program(ORIG, NEW) #endif /* !RELOCATE_program */ #define RELOCATE_linenumbers(ORIG,NEW) #define RELOCATE_identifier_index(ORIG,NEW) #define RELOCATE_variable_index(ORIG,NEW) #define RELOCATE_identifier_references(ORIG,NEW) #define RELOCATE_strings(ORIG,NEW) #define RELOCATE_inherits(ORIG,NEW) #define RELOCATE_identifiers(ORIG,NEW) #define RELOCATE_constants(ORIG,NEW) #define RELOCATE_relocations(ORIG,NEW) #define FOO(NUMTYPE,TYPE,NAME) \ void PIKE_CONCAT(low_add_to_,NAME) (struct program_state *state, \ TYPE ARG) { \ if(state->malloc_size_program->PIKE_CONCAT(num_,NAME) == \ state->new_program->PIKE_CONCAT(num_,NAME)) { \ TYPE *tmp; \ state->malloc_size_program->PIKE_CONCAT(num_,NAME) *= 2; \ state->malloc_size_program->PIKE_CONCAT(num_,NAME)++; \ tmp = realloc((void *)state->new_program->NAME, \ sizeof(TYPE) * \ state->malloc_size_program-> \ PIKE_CONCAT(num_,NAME)); \ if(!tmp) fatal("Out of memory.\n"); \ PIKE_CONCAT(RELOCATE_,NAME)(state->new_program, tmp); \ state->new_program->NAME=tmp; \ } \ state->new_program-> \ NAME[state->new_program->PIKE_CONCAT(num_,NAME)++]=(ARG); \ } \ void PIKE_CONCAT(add_to_,NAME) (TYPE ARG) { \ CHECK_FOO(NUMTYPE,TYPE,NAME); \ PIKE_CONCAT(low_add_to_,NAME) ( Pike_compiler, ARG ); \ } #include "program_areas.h" void ins_int(INT32 i, void (*func)(char tmp)) { int e; unsigned char *p = (unsigned char *)&i; for(e=0;e<(long)sizeof(i);e++) { func(p[e]); } } void ins_short(INT16 i, void (*func)(char tmp)) { int e; unsigned char *p = (unsigned char *)&i; for(e=0;e<(long)sizeof(i);e++) { func(p[e]); } } void use_module(struct svalue *s) { if( (1<<s->type) & (BIT_MAPPING | BIT_OBJECT | BIT_PROGRAM)) { Pike_compiler->num_used_modules++; assign_svalue_no_free((struct svalue *) low_make_buf_space(sizeof(struct svalue), &used_modules), s); if(Pike_compiler->module_index_cache) { free_mapping(Pike_compiler->module_index_cache); Pike_compiler->module_index_cache=0; } }else{ yyerror("Module is neither mapping nor object"); } } void unuse_modules(INT32 howmany) { if(!howmany) return; #ifdef PIKE_DEBUG if(howmany *sizeof(struct svalue) > used_modules.s.len) fatal("Unusing too many modules.\n"); #endif Pike_compiler->num_used_modules-=howmany; low_make_buf_space(-sizeof(struct svalue)*howmany, &used_modules); free_svalues((struct svalue *)low_make_buf_space(0, &used_modules), howmany, BIT_MAPPING | BIT_OBJECT | BIT_PROGRAM); if(Pike_compiler->module_index_cache) { free_mapping(Pike_compiler->module_index_cache); Pike_compiler->module_index_cache=0; } } int low_find_shared_string_identifier(struct pike_string *name, struct program *prog); static struct node_s *index_modules(struct pike_string *ident, struct mapping **module_index_cache, int num_used_modules, struct svalue *modules) { if(*module_index_cache) { struct svalue *tmp=low_mapping_string_lookup(*module_index_cache,ident); if(tmp) { if(!(SAFE_IS_ZERO(tmp) && tmp->subtype==1)) return mksvaluenode(tmp); return 0; } } /* fprintf(stderr,"index_module: %s\n",ident->str); */ { JMP_BUF tmp; if(SETJMP(tmp)) { struct svalue thrown = throw_value; throw_value.type = T_INT; if (!ident->size_shift) { my_yyerror("Couldn't index module '%s'.", ident->str); } else { yyerror("Couldn't index module."); } push_svalue(&thrown); low_safe_apply_handler("compile_exception", error_handler, compat_handler, 1); if (SAFE_IS_ZERO(sp-1)) yy_describe_exception(&thrown); pop_stack(); free_svalue(&thrown); } else { int e = num_used_modules; struct svalue *m = modules - num_used_modules; while(--e>=0) { push_svalue(m+e); ref_push_string(ident); f_index(2); if(!IS_UNDEFINED(Pike_sp-1)) { struct node_s *ret; UNSETJMP(tmp); if(!*module_index_cache) *module_index_cache = allocate_mapping(10); mapping_string_insert(*module_index_cache, ident, Pike_sp-1); ret = mksvaluenode(Pike_sp-1); pop_stack(); return ret; } pop_stack(); } } UNSETJMP(tmp); } /* fprintf(stderr,"***Undefined.\n"); */ return 0; } struct node_s *find_module_identifier(struct pike_string *ident, int see_inherit) { struct node_s *ret; struct svalue *modules=(struct svalue *) (used_modules.s.str + used_modules.s.len); if((ret=index_modules(ident, &Pike_compiler->module_index_cache, Pike_compiler->num_used_modules, modules))) return ret; modules-=Pike_compiler->num_used_modules; { struct program_state *p=Pike_compiler->previous; int n; for(n=0;n<compilation_depth;n++,p=p->previous) { int i; if(see_inherit) { i=really_low_find_shared_string_identifier(ident, p->new_program, SEE_STATIC); if(i!=-1) { return mkexternalnode(p->new_program, i); } } if((ret=index_modules(ident, &p->module_index_cache, p->num_used_modules, modules))) return ret; modules-=p->num_used_modules; #ifdef PIKE_DEBUG if( ((char *)modules ) < used_modules.s.str) fatal("Modules out of whack!\n"); #endif } } /* Handle this_program */ if (ident == this_program_string) { struct svalue s; s.type=T_PROGRAM; s.u.program=Pike_compiler->new_program; return mkconstantsvaluenode(&s); } if(resolve_cache) { struct svalue *tmp=low_mapping_string_lookup(resolve_cache,ident); if(tmp) { if(!(SAFE_IS_ZERO(tmp) && tmp->subtype==1)) return mkconstantsvaluenode(tmp); return 0; } } if(!Pike_compiler->num_parse_error && get_master()) { DECLARE_CYCLIC(); node *ret=0; if(BEGIN_CYCLIC(ident, lex.current_file)) { my_yyerror("Recursive module dependency in %s.", ident->str); }else{ int i; SET_CYCLIC_RET(1); ref_push_string(ident); ref_push_string(lex.current_file); if (error_handler) { ref_push_object(error_handler); } else { push_int(0); } if (safe_apply_handler("resolv", error_handler, compat_handler, 3, 0)) { if(!resolve_cache) resolve_cache=dmalloc_touch(struct mapping *, allocate_mapping(10)); mapping_string_insert(resolve_cache,ident,Pike_sp-1); if(!(SAFE_IS_ZERO(Pike_sp-1) && Pike_sp[-1].subtype==1)) { ret=mkconstantsvaluenode(Pike_sp-1); } pop_stack(); } else if(Pike_compiler->compiler_pass==2) { if (throw_value.type == T_STRING && !throw_value.u.string->size_shift) { yyerror(throw_value.u.string->str); free_svalue(&throw_value); throw_value.type = T_INT; } else { struct svalue thrown = throw_value; throw_value.type = T_INT; if (!ident->size_shift) my_yyerror("Error resolving '%s'.", ident->str); else yyerror("Error resolving identifier."); push_svalue(&thrown); low_safe_apply_handler("compile_exception", error_handler, compat_handler, 1); if (SAFE_IS_ZERO(sp-1)) yy_describe_exception(&thrown); pop_stack(); free_svalue(&thrown); } } } END_CYCLIC(); if(ret) return ret; } return 0; } /* Fixme: allow level=0 to return the current level */ struct program *parent_compilation(int level) { int n; struct program_state *p=Pike_compiler->previous; for(n=0;n<level;n++) { if(n>=compilation_depth) return 0; p=p->previous; if(!p) return 0; } return p->new_program; } #define ID_TO_PROGRAM_CACHE_SIZE 512 struct program *id_to_program_cache[ID_TO_PROGRAM_CACHE_SIZE]; struct program *id_to_program(INT32 id) { struct program *p; INT32 h; if(!id) return 0; h=id & (ID_TO_PROGRAM_CACHE_SIZE-1); if((p=id_to_program_cache[h])) if(p->id==id) return p; for(p=first_program;p;p=p->next) { if(id==p->id) { id_to_program_cache[h]=p; return p; } } if ((id > 0) && (id < PROG_DYNAMIC_ID_START)) { /* Reserved id. Attempt to load the proper dynamic module * to resolv the id. */ char *module = NULL; switch(id) { case PROG_PARSER_HTML_ID: module = "Parser._parser"; break; case PROG_GMP_MPZ_ID: module = "Gmp"; break; case PROG_MODULE_MIME_ID: module = "___MIME"; break; default: if ((id >= 100) && (id <= 300)) { module = "Image"; } else if ((id >= 1000) && (id <= 2000)) { module = "GTK"; } break; } if (module) { push_text(module); SAFE_APPLY_MASTER("resolv", 1); pop_stack(); /* Try again... */ for(p=first_program;p;p=p->next) { if(id==p->id) { id_to_program_cache[h]=p; return p; } } } } return 0; } /* Here starts routines which are used to build new programs */ /* Re-allocate all the memory in the program in one chunk. because: * 1) The individual blocks are munch bigger than they need to be * 2) cuts down on malloc overhead (maybe) * 3) localizes memory access (decreases paging) */ void optimize_program(struct program *p) { size_t size=0; char *data; /* Already done (shouldn't happen, but who knows?) */ if(p->flags & PROGRAM_OPTIMIZED) return; #define FOO(NUMTYPE,TYPE,NAME) \ size=DO_ALIGN(size, ALIGNOF(TYPE)); \ size+=p->PIKE_CONCAT(num_,NAME)*sizeof(p->NAME[0]); #include "program_areas.h" data=malloc(size); if(!data) { make_program_executable(p); return; /* We are out of memory, but we don't care! */ } size=0; #define FOO(NUMTYPE,TYPE,NAME) \ size=DO_ALIGN(size, ALIGNOF(TYPE)); \ MEMCPY(data+size,p->NAME,p->PIKE_CONCAT(num_,NAME)*sizeof(p->NAME[0])); \ PIKE_CONCAT(RELOCATE_,NAME)(p, (TYPE *)(data+size)); \ dmfree((char *)p->NAME); \ p->NAME=(TYPE *)(data+size); \ size+=p->PIKE_CONCAT(num_,NAME)*sizeof(p->NAME[0]); #include "program_areas.h" p->total_size=size + sizeof(struct program); p->flags |= PROGRAM_OPTIMIZED; make_program_executable(p); } /* internal function to make the index-table */ int program_function_index_compare(const void *a,const void *b) { return DO_NOT_WARN((int)my_order_strcmp(ID_FROM_INT(Pike_compiler->new_program, *(unsigned short *)a)->name, ID_FROM_INT(Pike_compiler->new_program, *(unsigned short *)b)->name)); } #ifdef PIKE_DEBUG struct pike_string *find_program_name(struct program *p, INT32 *line) { ptrdiff_t pos; INT32 l; if(!line) line=&l; #ifdef DEBUG_MALLOC { char *tmp=dmalloc_find_name(p); *line=0; if(tmp) return make_shared_string(tmp); } #endif return get_program_line(p, line); } #endif void fixate_program(void) { INT32 i,e,t; struct program *p=Pike_compiler->new_program; if(p->flags & PROGRAM_FIXED) return; #ifdef PIKE_DEBUG if(p->flags & PROGRAM_OPTIMIZED) fatal("Cannot fixate optimized program\n"); #endif /* Ok, sort for binsearch */ for(e=i=0;i<(int)p->num_identifier_references;i++) { struct reference *funp; struct identifier *fun; funp=p->identifier_references+i; if(funp->id_flags & (ID_HIDDEN|ID_STATIC)) continue; if(funp->id_flags & ID_INHERITED) { int found_better=-1; int funa_is_prototype; if(funp->id_flags & ID_PRIVATE) continue; fun=ID_FROM_PTR(p, funp); funa_is_prototype = fun->func.offset == -1; /* if(fun->func.offset == -1) continue; * prototype */ /* check for multiple definitions */ for(t=i+1;t<(int)p->num_identifier_references;t++) { struct reference *funpb; struct identifier *funb; funpb=p->identifier_references+t; if(funpb->id_flags & (ID_HIDDEN|ID_STATIC)) continue; funb=ID_FROM_PTR(p,funpb); /* if(funb->func.offset == -1) continue; * prototype */ if(fun->name==funb->name) { found_better=t; if(funa_is_prototype && funb->func.offset != -1) { funp->inherit_offset = funpb->inherit_offset; funp->identifier_offset = funpb->identifier_offset; } if(!funa_is_prototype && funb->func.offset == -1) { funpb->inherit_offset = funp->inherit_offset; funpb->identifier_offset = funp->identifier_offset; } } } if(found_better!=-1) continue; } add_to_identifier_index(i); } fsort((void *)p->identifier_index, p->num_identifier_index, sizeof(unsigned short),(fsortfun)program_function_index_compare); /* Yes, it is supposed to start at 1 /Hubbe */ for(i=1;i<NUM_LFUNS;i++) { p->lfuns[i] = low_find_lfun(p, i); } p->flags |= PROGRAM_FIXED; if(Pike_compiler->check_final) { for(i=0;i<(int)p->num_identifier_references;i++) { struct identifier *id; if(p->identifier_references[i].id_flags & ID_NOMASK) { struct pike_string *name=ID_FROM_INT(p, i)->name; e=find_shared_string_identifier(name,p); if(e == -1) e=really_low_find_shared_string_identifier(name,p,SEE_STATIC); if(e != i) { if(name->len < 1024 && !name->size_shift) my_yyerror("Illegal to redefine final identifier %s",name->str); else my_yyerror("Illegal to redefine final identifier (unable to output name of identifier)."); } } } } #ifdef DEBUG_MALLOC { #define DBSTR(X) ((X)?(X)->str:"") int e,v; INT32 line; struct pike_string *tmp; struct memory_map *m=0;; if(lex.current_file && lex.current_file->str && lex.current_file->len && !strcmp(lex.current_file->str,"-")) { m=dmalloc_alloc_mmap( DBSTR(lex.current_file), lex.current_line); } else if( (tmp=find_program_name(Pike_compiler->new_program, &line)) ) { m=dmalloc_alloc_mmap( tmp->str, line); free_string(tmp); }else{ m=dmalloc_alloc_mmap( "program id", Pike_compiler->new_program->id); } for(e=0;e<Pike_compiler->new_program->num_inherits;e++) { struct inherit *i=Pike_compiler->new_program->inherits+e; char *tmp; struct pike_string *tmp2 = NULL; char buffer[50]; for(v=0;v<i->prog->num_variable_index;v++) { int d=i->prog->variable_index[v]; struct identifier *id=i->prog->identifiers+d; dmalloc_add_mmap_entry(m, id->name->str, /* OFFSETOF(object,storage) + */ i->storage_offset + id->func.offset, sizeof_variable(id->run_time_type), 1, /* count */ 0,0); } if(i->name) { tmp=i->name->str; } else if(!(tmp2 = find_program_name(i->prog, &line))) { sprintf(buffer,"inherit[%d]",e); tmp=buffer; } else { tmp = tmp2->str; } dmalloc_add_mmap_entry(m, tmp, /* OFFSETOF(object, storage) + */ i->storage_offset, i->prog->storage_needed - i->prog->inherits[0].storage_offset, 1, /* count */ 0,0); if (tmp2) { free_string(tmp2); } } dmalloc_set_mmap_template(Pike_compiler->new_program, m); } #endif } struct program *low_allocate_program(void) { struct program *p=alloc_program(); MEMSET(p, 0, sizeof(struct program)); p->flags|=PROGRAM_VIRGIN; p->alignment_needed=1; GC_ALLOC(p); p->id=++current_program_id; INIT_PIKE_MEMOBJ(p); DOUBLELINK(first_program, p); GETTIMEOFDAY(& p->timestamp); return p; } /* * Start building a new program */ void low_start_new_program(struct program *p, struct pike_string *name, int flags, int *idp) { int e,id=0; struct svalue tmp; #if 0 #ifdef SHARED_NODES if (!node_hash.table) { node_hash.table = malloc(sizeof(node *)*32831); if (!node_hash.table) { fatal("Out of memory!\n"); } MEMSET(node_hash.table, 0, sizeof(node *)*32831); node_hash.size = 32831; } #endif /* SHARED_NODES */ #endif /* 0 */ /* We don't want to change thread, but we don't want to * wait for the other threads to complete. */ low_init_threads_disable(); compilation_depth++; tmp.type=T_PROGRAM; if(!p) { p=low_allocate_program(); if(name) { tmp.u.program=p; id=add_constant(name, &tmp, flags & ~ID_EXTERN); if(TEST_COMPAT(7,2) || (lex.pragmas && ID_SAVE_PARENT)) { p->flags |= PROGRAM_USES_PARENT; }else{ struct pike_string *tmp=findstring("__pragma_save_parent__"); if(tmp) { struct node_s *n=find_module_identifier(tmp, 0); if(n) { free_node(n); p->flags |= PROGRAM_USES_PARENT; } } } #if 0 fprintf(stderr,"Compiling class %s, depth=%d\n",name->str,compilation_depth); }else{ fprintf(stderr,"Compiling file %s, depth=%d\n", lex.current_file ? lex.current_file->str : "-", compilation_depth); #endif } if(compilation_depth >= 1) add_ref(p->parent = Pike_compiler->new_program); e=1; }else{ tmp.u.program=p; add_ref(p); if(name) { struct identifier *i; id=isidentifier(name); if (id < 0) fatal("Program constant disappeared in second pass.\n"); i=ID_FROM_INT(Pike_compiler->new_program, id); free_type(i->type); i->type=get_type_of_svalue(&tmp); } e=2; } p->flags &=~ PROGRAM_VIRGIN; Pike_compiler->parent_identifier=id; if(idp) *idp=id; CDFPRINTF((stderr, "th(%ld) %p low_start_new_program() %s " "pass=%d: threads_disabled:%d, compilation_depth:%d\n", (long)th_self(), p, name ? name->str : "-", Pike_compiler->compiler_pass, threads_disabled, compilation_depth)); init_type_stack(); #define PUSH #include "compilation.h" Pike_compiler->compiler_pass=e; Pike_compiler->num_used_modules=0; if(p && (p->flags & PROGRAM_FINISHED)) { yyerror("Pass2: Program already done"); p=0; } Pike_compiler->malloc_size_program = ALLOC_STRUCT(program); #ifdef PIKE_DEBUG Pike_compiler->fake_object=alloc_object(); Pike_compiler->fake_object->storage=(char *)xalloc(256 * sizeof(struct svalue)); /* Stipple to find illegal accesses */ MEMSET(Pike_compiler->fake_object->storage,0x55,256*sizeof(struct svalue)); #else Pike_compiler->fake_object=ALLOC_STRUCT(object); Pike_compiler->fake_object->storage=(char *)malloc(sizeof(struct parent_info)); #endif /* Can't use GC_ALLOC on fake objects, but still it's good to know * that they never take over a stale gc marker. */ if (Pike_in_gc) remove_marker(Pike_compiler->fake_object); Pike_compiler->fake_object->next=Pike_compiler->fake_object; Pike_compiler->fake_object->prev=Pike_compiler->fake_object; Pike_compiler->fake_object->refs=1; Pike_compiler->fake_object->prog=p; add_ref(p); #ifdef PIKE_DEBUG Pike_compiler->fake_object->program_id=p->id; #endif #ifdef PIKE_SECURITY Pike_compiler->fake_object->prot=0; #endif debug_malloc_touch(Pike_compiler->fake_object); debug_malloc_touch(Pike_compiler->fake_object->storage); if(name) { /* Fake objects have parents regardless of PROGRAM_USE_PARENT */ if((((struct parent_info *)Pike_compiler->fake_object->storage)->parent=Pike_compiler->previous->fake_object)) add_ref(Pike_compiler->previous->fake_object); ((struct parent_info *)Pike_compiler->fake_object->storage)->parent_identifier=id; }else{ ((struct parent_info *)Pike_compiler->fake_object->storage)->parent=0; ((struct parent_info *)Pike_compiler->fake_object->storage)->parent_identifier=0; } Pike_compiler->new_program=p; #ifdef PROGRAM_BUILD_DEBUG if (name) { fprintf (stderr, "%.*sstarting program %d (pass=%d): ", compilation_depth, " ", Pike_compiler->new_program->id, Pike_compiler->compiler_pass); push_string (name); print_svalue (stderr, --Pike_sp); putc ('\n', stderr); } else fprintf (stderr, "%.*sstarting program %d (pass=%d)\n", compilation_depth, " ", Pike_compiler->new_program->id, Pike_compiler->compiler_pass); #endif debug_malloc_touch(Pike_compiler->fake_object); debug_malloc_touch(Pike_compiler->fake_object->storage); if(Pike_compiler->new_program->program) { #define FOO(NUMTYPE,TYPE,NAME) \ Pike_compiler->malloc_size_program->PIKE_CONCAT(num_,NAME)=Pike_compiler->new_program->PIKE_CONCAT(num_,NAME); #include "program_areas.h" { INT32 line=0, off=0; size_t len = 0; INT32 shift = 0; char *file=0; char *cnt=Pike_compiler->new_program->linenumbers; while(cnt < Pike_compiler->new_program->linenumbers + Pike_compiler->new_program->num_linenumbers) { if(*cnt == 127) { cnt++; len = get_small_number(&cnt); shift = *cnt; file = ++cnt; cnt += len<<shift; } off+=get_small_number(&cnt); line+=get_small_number(&cnt); } Pike_compiler->last_line=line; Pike_compiler->last_pc=off; if(file) { struct pike_string *str = begin_wide_shared_string(len, shift); if(Pike_compiler->last_file) free_string(Pike_compiler->last_file); memcpy(str->str, file, len<<shift); Pike_compiler->last_file = end_shared_string(str); } } }else{ static struct pike_string *s; struct inherit i; #define START_SIZE 64 #define FOO(NUMTYPE,TYPE,NAME) \ Pike_compiler->malloc_size_program->PIKE_CONCAT(num_,NAME)=START_SIZE; \ Pike_compiler->new_program->NAME=(TYPE *)xalloc(sizeof(TYPE) * START_SIZE); #include "program_areas.h" i.prog=Pike_compiler->new_program; i.identifier_level=0; i.storage_offset=0; i.inherit_level=0; i.parent=0; i.parent_identifier=-1; i.parent_offset=-18; i.name=0; Pike_compiler->new_program->parent_program_id=compilation_depth>0 && Pike_compiler->previous->new_program ? Pike_compiler->previous->new_program->id : -1; add_to_inherits(i); } Pike_compiler->init_node=0; Pike_compiler->num_parse_error=0; push_compiler_frame(0); copy_pike_type(Pike_compiler->compiler_frame->current_return_type, void_type_string); debug_malloc_touch(Pike_compiler->fake_object); debug_malloc_touch(Pike_compiler->fake_object->storage); } PMOD_EXPORT void debug_start_new_program(PROGRAM_LINE_ARGS) { CDFPRINTF((stderr, "th(%ld) start_new_program(): threads_disabled:%d, compilation_depth:%d\n", (long)th_self(),threads_disabled, compilation_depth)); low_start_new_program(0,0,0,0); #ifdef PIKE_DEBUG { struct pike_string *s=make_shared_string(file); store_linenumber(line,s); free_string(s); debug_malloc_name(Pike_compiler->new_program, file, line); } #endif } static void exit_program_struct(struct program *p) { unsigned INT16 e; if(p->parent) { /* Make sure to break the circularity... */ struct program *parent = p->parent; p->parent = NULL; free_program(parent); } if(id_to_program_cache[p->id & (ID_TO_PROGRAM_CACHE_SIZE-1)]==p) id_to_program_cache[p->id & (ID_TO_PROGRAM_CACHE_SIZE-1)]=0; if(p->strings) for(e=0; e<p->num_strings; e++) if(p->strings[e]) free_string(p->strings[e]); if(p->identifiers) { for(e=0; e<p->num_identifiers; e++) { if(p->identifiers[e].name) free_string(p->identifiers[e].name); if(p->identifiers[e].type) free_type(p->identifiers[e].type); } } if(p->constants) { for(e=0;e<p->num_constants;e++) { free_svalue(& p->constants[e].sval); if(p->constants[e].name) free_string(p->constants[e].name); } } if(p->inherits) for(e=0; e<p->num_inherits; e++) { if(p->inherits[e].name) free_string(p->inherits[e].name); if(e) { if(p->inherits[e].prog) free_program(p->inherits[e].prog); } if(p->inherits[e].parent) free_object(p->inherits[e].parent); } DOUBLEUNLINK(first_program, p); if(p->flags & PROGRAM_OPTIMIZED) { if(p->program) dmfree(p->program); #define FOO(NUMTYPE,TYPE,NAME) p->NAME=0; #include "program_areas.h" }else{ #define FOO(NUMTYPE,TYPE,NAME) \ if(p->NAME) { dmfree((char *)p->NAME); p->NAME=0; } #include "program_areas.h" } EXIT_PIKE_MEMOBJ(p); GC_FREE(p); } #ifdef PIKE_DEBUG void dump_program_desc(struct program *p) { int e,d,q; /* fprintf(stderr,"Program '%s':\n",p->name->str); */ fprintf(stderr,"All inherits:\n"); for(e=0;e<p->num_inherits;e++) { for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"%3d:\n",e); for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"inherited program: %d\n",p->inherits[e].prog->id); if(p->inherits[e].name) { for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"name : %s\n",p->inherits[e].name->str); } for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"inherit_level: %d\n",p->inherits[e].inherit_level); for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"identifier_level: %d\n",p->inherits[e].identifier_level); for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"parent_identifier: %d\n",p->inherits[e].parent_identifier); for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"parent_offset: %d\n",p->inherits[e].parent_offset); for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"storage_offset: %ld\n", DO_NOT_WARN((long)p->inherits[e].storage_offset)); for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"parent: %p\n",p->inherits[e].parent); if(p->inherits[e].parent && p->inherits[e].parent->prog && p->inherits[e].parent->prog->num_linenumbers>1) { for(d=0;d<p->inherits[e].inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"parent: %s\n",p->inherits[e].parent->prog->linenumbers+1); } } fprintf(stderr,"All identifiers:\n"); for(e=0;e<(int)p->num_identifier_references;e++) { fprintf(stderr,"%3d:",e); for(d=0;d<INHERIT_FROM_INT(p,e)->inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"%s;\n",ID_FROM_INT(p,e)->name->str); } fprintf(stderr,"All sorted identifiers:\n"); for(q=0;q<(int)p->num_identifier_index;q++) { e=p->identifier_index[q]; fprintf(stderr,"%3d (%3d):",e,q); for(d=0;d<INHERIT_FROM_INT(p,e)->inherit_level;d++) fprintf(stderr," "); fprintf(stderr,"%s;\n", ID_FROM_INT(p,e)->name->str); } } #endif static void toss_compilation_resources(void) { if(Pike_compiler->fake_object) { if( ((struct parent_info *)Pike_compiler->fake_object->storage)->parent ) { free_object(((struct parent_info *)Pike_compiler->fake_object->storage)->parent); ((struct parent_info *)Pike_compiler->fake_object->storage)->parent=0; } free_program(Pike_compiler->fake_object->prog); Pike_compiler->fake_object->prog=0; free_object(Pike_compiler->fake_object); Pike_compiler->fake_object=0; } free_program(Pike_compiler->new_program); Pike_compiler->new_program=0; if(Pike_compiler->malloc_size_program) { dmfree((char *)Pike_compiler->malloc_size_program); Pike_compiler->malloc_size_program=0; } if(Pike_compiler->module_index_cache) { free_mapping(Pike_compiler->module_index_cache); Pike_compiler->module_index_cache=0; } while(Pike_compiler->compiler_frame) pop_compiler_frame(); if(Pike_compiler->last_identifier) { free_string(Pike_compiler->last_identifier); Pike_compiler->last_identifier=0; } if(Pike_compiler->last_file) { free_string(Pike_compiler->last_file); Pike_compiler->last_file=0; } unuse_modules(Pike_compiler->num_used_modules); } int sizeof_variable(int run_time_type) { switch(run_time_type) { case T_FUNCTION: case T_MIXED: return sizeof(struct svalue); case T_FLOAT: return sizeof(FLOAT_TYPE); case T_INT: return sizeof(INT_TYPE); default: return sizeof(char *); } } static ptrdiff_t alignof_variable(int run_time_type) { switch(run_time_type) { case T_FUNCTION: case T_MIXED: return ALIGNOF(struct svalue); case T_FLOAT: return ALIGNOF(FLOAT_TYPE); case T_INT: return ALIGNOF(INT_TYPE); default: return ALIGNOF(char *); } } #ifdef PIKE_DEBUG void check_program(struct program *p) { INT32 size; unsigned INT32 checksum, e; int variable_positions[1024]; if(p->flags & PROGRAM_AVOID_CHECK) return; for(e=0;e<NELEM(variable_positions);e++) variable_positions[e]=-1; if(p->id > current_program_id) fatal("Program id is out of sync! (p->id=%d, current_program_id=%d)\n",p->id,current_program_id); if(p->refs <=0) fatal("Program has zero refs.\n"); if(p->next && p->next->prev != p) fatal("Program ->next->prev != program.\n"); if(p->prev) { if(p->prev->next != p) fatal("Program ->prev->next != program.\n"); }else{ if(first_program != p) fatal("Program ->prev == 0 but first_program != program.\n"); } if(p->id > current_program_id || p->id <= 0) fatal("Program id is wrong.\n"); if(p->storage_needed < 0) fatal("Program->storage_needed < 0.\n"); if(p->num_identifier_index > p->num_identifier_references) fatal("Too many identifier index entries in program!\n"); for(e=0;e<p->num_constants;e++) { check_svalue(& p->constants[e].sval); if(p->constants[e].name) check_string(p->constants[e].name); } for(e=0;e<p->num_strings;e++) check_string(p->strings[e]); for(e=0;e<p->num_inherits;e++) { if(!p->inherits[e].prog) { /* This inherit is not yet initialized, ignore rest of tests.. */ return; } if(p->inherits[e].storage_offset < 0) fatal("Inherit->storage_offset is wrong.\n"); if(p->inherits[e].prog && p->inherits[e].storage_offset + STORAGE_NEEDED(p->inherits[e].prog) > p->storage_needed) fatal("Not enough room allocated by inherit!\n"); if(e) { if(p->inherits[e-1].storage_offset > p->inherits[e].storage_offset) fatal("Overlapping inherits! (1)\n"); if(p->inherits[e-1].prog && p->inherits[e-1].inherit_level >= p->inherits[e].inherit_level && ( p->inherits[e-1].storage_offset + STORAGE_NEEDED(p->inherits[e-1].prog)) > p->inherits[e].storage_offset) fatal("Overlapping inherits! (3)\n"); } } if(p->flags & PROGRAM_FINISHED) for(e=0;e<p->num_identifiers;e++) { check_string(p->identifiers[e].name); check_type_string(p->identifiers[e].type); if(p->identifiers[e].identifier_flags & ~IDENTIFIER_MASK) fatal("Unknown flags in identifier flag field.\n"); if(p->identifiers[e].run_time_type!=T_MIXED) check_type(p->identifiers[e].run_time_type); if(IDENTIFIER_IS_VARIABLE(p->identifiers[e].identifier_flags)) { if( (p->identifiers[e].func.offset /* + OFFSETOF(object,storage)*/ ) & (alignof_variable(p->identifiers[e].run_time_type)-1)) { fatal("Variable %s offset is not properly aligned (%ld).\n", p->identifiers[e].name->str, PTRDIFF_T_TO_LONG(p->identifiers[e].func.offset)); } } } for(e=0;e<p->num_identifier_references;e++) { struct identifier *i; if(p->identifier_references[e].inherit_offset > p->num_inherits) fatal("Inherit offset is wrong!\n"); if(!p->inherits[p->identifier_references[e].inherit_offset].prog) { if(!(p->flags & PROGRAM_FINISHED)) continue; fatal("p->inherit[%d].prog = NULL!\n",p->identifier_references[e].inherit_offset); } if(p->identifier_references[e].identifier_offset > p->inherits[p->identifier_references[e].inherit_offset].prog->num_identifiers) fatal("Identifier offset %d is wrong! %d > %d\n", e, p->identifier_references[e].identifier_offset, p->inherits[p->identifier_references[e].inherit_offset].prog->num_identifiers); i=ID_FROM_INT(p, e); if( !(i->identifier_flags & (IDENTIFIER_FUNCTION | IDENTIFIER_CONSTANT))) { size_t q, size; /* Variable */ ptrdiff_t offset = INHERIT_FROM_INT(p, e)->storage_offset+i->func.offset; size=sizeof_variable(i->run_time_type); if((offset+size > (size_t)p->storage_needed) || offset<0) fatal("Variable outside storage! (%s)\n",i->name->str); for(q=0;q<size;q++) { if(offset+q >= NELEM(variable_positions)) break; if(variable_positions[offset+q] != -1) { if(ID_FROM_INT(p,variable_positions[offset+q])->run_time_type != i->run_time_type) { fprintf(stderr, "Storage offset: 0x%08x vs 0x%08x\n" "Func offset: 0x%08x vs 0x%08x\n" "Type: %s vs %s\n", INHERIT_FROM_INT(p, variable_positions[offset+q])-> storage_offset, INHERIT_FROM_INT(p, e)->storage_offset, ID_FROM_INT(p, variable_positions[offset+q])->func.offset, i->func.offset, get_name_of_type(ID_FROM_INT(p,variable_positions[offset+q] )->run_time_type), get_name_of_type(i->run_time_type)); if (i->name) { fatal("Variable '%s' and '%s' overlap\n" "Offset 0x%08x - 0x%08x overlaps with 0x%08x - 0x%08x\n", ID_FROM_INT(p, variable_positions[offset+q])->name->str, i->name->str, INHERIT_FROM_INT(p, variable_positions[offset+q])-> storage_offset + ID_FROM_INT(p, variable_positions[offset+q])->func.offset, INHERIT_FROM_INT(p, variable_positions[offset+q])-> storage_offset + ID_FROM_INT(p, variable_positions[offset+q])->func.offset + sizeof_variable(ID_FROM_INT(p, variable_positions[offset+q] )->run_time_type)-1, offset, offset+size-1); } else { fatal("Variable '%s' and anonymous variable (%d) overlap\n" "Offset 0x%08x - 0x%08x overlaps with 0x%08x - 0x%08x\n", ID_FROM_INT(p, variable_positions[offset+q])->name->str, e, INHERIT_FROM_INT(p, variable_positions[offset+q])-> storage_offset + ID_FROM_INT(p, variable_positions[offset+q])->func.offset, INHERIT_FROM_INT(p, variable_positions[offset+q])-> storage_offset + ID_FROM_INT(p, variable_positions[offset+q])->func.offset + sizeof_variable(ID_FROM_INT(p, variable_positions[offset+q] )->run_time_type)-1, offset, offset+size-1); } } } variable_positions[offset+q]=e; } } } for(e=0;e<p->num_identifier_index;e++) { if(p->identifier_index[e] > p->num_identifier_references) fatal("Program->identifier_indexes[%ld] is wrong\n",(long)e); } } #endif /* Note: This function is misnamed, since it's run after both passes. /mast */ struct program *end_first_pass(int finish) { int e; struct program *prog; struct pike_string *s; debug_malloc_touch(Pike_compiler->fake_object); debug_malloc_touch(Pike_compiler->fake_object->storage); MAKE_CONSTANT_SHARED_STRING(s,"__INIT"); /* Collect references to inherited __INIT functions */ for(e=Pike_compiler->new_program->num_inherits-1;e;e--) { int id; if(Pike_compiler->new_program->inherits[e].inherit_level!=1) continue; id=low_reference_inherited_identifier(0, e, s, SEE_STATIC); if(id!=-1) { Pike_compiler->init_node=mknode(F_COMMA_EXPR, mkcastnode(void_type_string, mkapplynode(mkidentifiernode(id),0)), Pike_compiler->init_node); } } /* * Define the __INIT function, but only if there was any code * to initialize. */ if(Pike_compiler->init_node) { e=dooptcode(s, mknode(F_COMMA_EXPR, Pike_compiler->init_node,mknode(F_RETURN,mkintnode(0),0)), function_type_string, ID_STATIC); Pike_compiler->init_node=0; }else{ e=-1; } Pike_compiler->new_program->lfuns[LFUN___INIT]=e; free_string(s); pop_compiler_frame(); /* Pop __INIT local variables */ if(Pike_compiler->num_parse_error > 0) { prog=0; }else{ prog=Pike_compiler->new_program; add_ref(prog); #ifdef PIKE_DEBUG check_program(prog); if(l_flag) dump_program_desc(prog); #endif Pike_compiler->new_program->flags |= PROGRAM_PASS_1_DONE; if(finish) { if(Pike_compiler->new_program->flags & PROGRAM_USES_PARENT) { Pike_compiler->new_program->parent_info_storage = add_xstorage(sizeof(struct parent_info), ALIGNOF(struct parent_info), 0); }else{ /* Cause errors if used hopefully */ Pike_compiler->new_program->parent_info_storage=-1; } fixate_program(); if(Pike_compiler->num_parse_error) { free_program(prog); prog=0; }else{ optimize_program(Pike_compiler->new_program); Pike_compiler->new_program->flags |= PROGRAM_FINISHED; } } } #ifdef PROGRAM_BUILD_DEBUG fprintf (stderr, "%.*sfinishing program %d (pass=%d)\n", compilation_depth, " ", Pike_compiler->new_program->id, Pike_compiler->compiler_pass); #endif toss_compilation_resources(); #if 0 CDFPRINTF((stderr, "th(%ld) end_first_pass(): " "compilation_depth:%d, Pike_compiler->compiler_pass:%d\n", (long)th_self(), compilation_depth, Pike_compiler->compiler_pass)); #endif if(!Pike_compiler->compiler_frame && (Pike_compiler->compiler_pass==2 || !prog) && resolve_cache) { free_mapping(dmalloc_touch(struct mapping *, resolve_cache)); resolve_cache=0; } #ifdef SHARED_NODES /* free(node_hash.table); */ #endif /* SHARED_NODES */ #define POP #include "compilation.h" exit_type_stack(); CDFPRINTF((stderr, "th(%ld) %p end_first_pass(%d): " "threads_disabled:%d, compilation_depth:%d\n", (long)th_self(), prog, finish, threads_disabled, compilation_depth)); compilation_depth--; exit_threads_disable(NULL); free_all_nodes(); return prog; } /* * Finish this program, returning the newly built program */ PMOD_EXPORT struct program *debug_end_program(void) { return end_first_pass(1); } /* * Allocate needed for this program in the object structure. * An offset to the data is returned. */ PMOD_EXPORT size_t low_add_storage(size_t size, size_t alignment, ptrdiff_t modulo_orig) { ptrdiff_t offset; ptrdiff_t modulo; if(!size) return Pike_compiler->new_program->storage_needed; #ifdef PIKE_DEBUG if(alignment <=0 || (alignment & (alignment-1)) || alignment > 256) fatal("Alignment must be 1,2,4,8,16,32,64,128 or 256 not %ld\n", PTRDIFF_T_TO_LONG(alignment)); #endif modulo=( modulo_orig /* +OFFSETOF(object,storage) */ ) % alignment; offset=DO_ALIGN(Pike_compiler->new_program->storage_needed-modulo,alignment)+modulo; if(!Pike_compiler->new_program->storage_needed) { /* Shouldn't Pike_compiler->new_program->storage_needed be set here? * Otherwise the debug code below ought to be trigged. * But since it isn't, I guess this is dead code? * /grubba 1999-09-28 * * No, the below offset represents the storage in the beginning * of obj->storage which is not used because of alignment constraints. * However, for historical reasons, prog->storage_offset needs to * contain this unused space as well. This means that the real * space used by all variables in an object is really: * o->prog->storage_needed - o->prog->inherits[0].storage_offset, * This can also be written as STORAGE_NEEDED(o->prog) * STORAGE_NEEDED() is defined in program.h. * /Hubbe 1999-09-29 * * Oops, seems I read the test below the wrong way around. * /grubba 1999-09-29 */ Pike_compiler->new_program->inherits[0].storage_offset=offset; } if(Pike_compiler->new_program->alignment_needed<alignment) Pike_compiler->new_program->alignment_needed = DO_NOT_WARN((unsigned INT8)alignment); #ifdef PIKE_DEBUG if(offset < Pike_compiler->new_program->storage_needed) fatal("add_storage failed horribly!\n"); if( (offset /* + OFFSETOF(object,storage) */ - modulo_orig ) % alignment ) fatal("add_storage failed horribly(2) %ld %ld %ld %ld!\n", DO_NOT_WARN((long)offset), (long)0 /* + OFFSETOF(object,storage) */, DO_NOT_WARN((long)modulo_orig), DO_NOT_WARN((long)alignment)); #endif Pike_compiler->new_program->storage_needed = offset + size; return (size_t) offset; } /* * Internal function. * Adds object storage that will *not* be inherited. */ static size_t add_xstorage(size_t size, size_t alignment, ptrdiff_t modulo_orig) { ptrdiff_t offset, modulo, available; int e; if(!size) return Pike_compiler->new_program->xstorage; modulo=( modulo_orig /* +OFFSETOF(object,storage) */ ) % alignment; offset=DO_ALIGN(Pike_compiler->new_program->xstorage-modulo,alignment)+modulo; Pike_compiler->new_program->xstorage = offset + size; /* Move all inherits to make room */ available = Pike_compiler->new_program->inherits[0].storage_offset; if(available < (ptrdiff_t)(offset+size)) { available= DO_ALIGN( ((offset + size) - available), Pike_compiler->new_program->alignment_needed); for(e=0;e<Pike_compiler->new_program->num_inherits;e++) Pike_compiler->new_program->inherits[e].storage_offset+=available; Pike_compiler->new_program->storage_needed+=available; } return (size_t) offset; } typedef void (*oldhandlertype)(struct object *); static void compat_event_handler(int e) { oldhandlertype handler; debug_malloc_touch(Pike_fp->current_object); handler=((oldhandlertype *)Pike_fp->context.prog->program)[e]; if(handler) handler(Pike_fp->current_object); debug_malloc_touch(Pike_fp->current_object); } static void add_compat_event_handler(void) { if(Pike_compiler->new_program->event_handler != compat_event_handler) { unsigned int e,d; unsigned char *tmp=(unsigned char *)&Pike_compiler->new_program->event_handler; for(d=0;d<NUM_PROG_EVENTS;d++) { /* FIXME: This looks like it might be broken. */ /* Broken how? -Hubbe */ #ifdef HAVE_COMPUTED_GOTO add_to_program(Pike_compiler->new_program->event_handler); #else /* !HAVE_COMPUTED_GOTO */ for(e=0;e<sizeof(Pike_compiler->new_program->event_handler);e++) add_to_program(tmp[e]); #endif /* HAVE_COMPUTED_GOTO */ } Pike_compiler->new_program->event_handler=compat_event_handler; } } /* * set a callback used to initialize clones of this program * the init function is called at clone time * This function is obsolete, use pike_set_prog_event_callback instead. */ PMOD_EXPORT void set_init_callback(void (*init)(struct object *)) { add_compat_event_handler(); ((oldhandlertype *)Pike_compiler->new_program->program)[PROG_EVENT_INIT]=init; } /* * set a callback used to de-initialize clones of this program * the exit function is called at destruct * This function is obsolete, use pike_set_prog_event_callback instead. */ PMOD_EXPORT void set_exit_callback(void (*exit)(struct object *)) { add_compat_event_handler(); ((oldhandlertype *)Pike_compiler->new_program->program)[PROG_EVENT_EXIT]=exit; } /* * This callback is used by the gc to traverse all references to * objects. It should call some gc_recurse_* function exactly once for * each reference that the pike internals doesn't know about. * * If a reference is shared between objects, it should be traversed * once for every instance sharing it. * * The callback might be called more than once for the same instance * during a gc pass. The gc assumes that the references are enumerated * in the same order in that case. * * This function is obsolete, use pike_set_prog_event_callback instead. */ PMOD_EXPORT void set_gc_recurse_callback(void (*m)(struct object *)) { add_compat_event_handler(); ((oldhandlertype *)Pike_compiler->new_program->program)[PROG_EVENT_GC_RECURSE]=m; } /* * This callback is used by the gc to count all references to objects. * It should call gc_check, gc_check_(weak_)svalues or * gc_check_(weak_)short_svalue exactly once for each reference that * the pike internals doesn't know about. * * If a reference is shared between objects, it should be counted once * for all shared instances. The return value from gc_check is useful * to ensure this; it's zero when called the first time for its * argument. * * This function is obsolete, use pike_set_prog_event_callback instead. */ PMOD_EXPORT void set_gc_check_callback(void (*m)(struct object *)) { add_compat_event_handler(); ((oldhandlertype *)Pike_compiler->new_program->program)[PROG_EVENT_GC_CHECK]=m; } void pike_set_prog_event_callback(void (*cb)(int)) { #ifdef PIKE_DEBUG if(Pike_compiler->new_program->event_handler) fatal("Program already has an event handler!\n"); #endif Pike_compiler->new_program->event_handler=cb; } void pike_set_prog_optimize_callback(node *(*opt)(node *)) { #ifdef PIKE_DEBUG if(Pike_compiler->new_program->optimize) fatal("Program already has an optimize handler!\n"); #endif Pike_compiler->new_program->optimize = opt; } int low_reference_inherited_identifier(struct program_state *q, int e, struct pike_string *name, int flags) { struct program *np=(q?q:Pike_compiler)->new_program; struct reference funp; struct program *p; int i,d; p=np->inherits[e].prog; i=find_shared_string_identifier(name,p); if(i==-1) { i=really_low_find_shared_string_identifier(name,p, flags); if(i==-1) return -1; } if(p->identifier_references[i].id_flags & ID_HIDDEN) return -1; if(p->identifier_references[i].id_flags & ID_PRIVATE) if(!(flags & SEE_PRIVATE)) return -1; funp=p->identifier_references[i]; funp.inherit_offset+=e; funp.id_flags|=ID_HIDDEN; for(d=0;d<(int)np->num_identifier_references;d++) { struct reference *refp; refp=np->identifier_references+d; if(!MEMCMP((char *)refp,(char *)&funp,sizeof funp)) return d; } if(q) low_add_to_identifier_references(q,funp); else add_to_identifier_references(funp); return np->num_identifier_references -1; } int find_inherit(struct program *p, struct pike_string *name) { int e; #if 0 fprintf(stderr, "find_inherit(0x%08lx, \"%s\")...\n", (unsigned long)p, name->str); #endif /* 0 */ for(e = p->num_inherits-1; e>0; e--) { #if 0 fprintf(stderr, " %04d: %04d %s\n", e, p->inherits[e].inherit_level, p->inherits[e].name?p->inherits[e].name->str:"NULL"); #endif /* 0 */ if (p->inherits[e].inherit_level > 1) continue; if (name == p->inherits[e].name) return e; } return 0; } node *reference_inherited_identifier(struct pike_string *super_name, struct pike_string *function_name) { int n,e,id; struct program_state *state=Pike_compiler->previous; struct program *p; #ifdef PIKE_DEBUG if(function_name!=debug_findstring(function_name)) fatal("reference_inherited_function on nonshared string.\n"); #endif p=Pike_compiler->new_program; for(e=p->num_inherits-1;e>0;e--) { if(p->inherits[e].inherit_level!=1) continue; if(!p->inherits[e].name) continue; if(super_name) if(super_name != p->inherits[e].name) continue; id=low_reference_inherited_identifier(0, e, function_name, SEE_STATIC); if(id!=-1) return mkidentifiernode(id); if(ISCONSTSTR(function_name,"`->") || ISCONSTSTR(function_name,"`[]")) { return mknode(F_MAGIC_INDEX,mknewintnode(e),mknewintnode(0)); } if(ISCONSTSTR(function_name,"`->=") || ISCONSTSTR(function_name,"`[]=")) { return mknode(F_MAGIC_SET_INDEX,mknewintnode(e),mknewintnode(0)); } if(ISCONSTSTR(function_name,"_indices")) { return mknode(F_MAGIC_INDICES,mknewintnode(e),mknewintnode(0)); } if(ISCONSTSTR(function_name,"_values")) { return mknode(F_MAGIC_VALUES,mknewintnode(e),mknewintnode(0)); } } for(n=0;n<compilation_depth;n++,state=state->previous) { struct program *p=state->new_program; for(e=p->num_inherits-1;e>0;e--) { if(p->inherits[e].inherit_level!=1) continue; if(!p->inherits[e].name) continue; if(super_name) if(super_name != p->inherits[e].name) continue; id=low_reference_inherited_identifier(state,e,function_name,SEE_STATIC); if(id!=-1) return mkexternalnode(p, id); if(ISCONSTSTR(function_name,"`->") || ISCONSTSTR(function_name,"`[]")) { return mknode(F_MAGIC_INDEX, mknewintnode(e),mknewintnode(n+1)); } if(ISCONSTSTR(function_name,"`->=") || ISCONSTSTR(function_name,"`[]=")) { return mknode(F_MAGIC_SET_INDEX, mknewintnode(e),mknewintnode(n+1)); } if(ISCONSTSTR(function_name,"_indices")) { return mknode(F_MAGIC_INDICES, mknewintnode(e),mknewintnode(n+1)); } if(ISCONSTSTR(function_name,"_values")) { return mknode(F_MAGIC_VALUES, mknewintnode(e),mknewintnode(n+1)); } } } return 0; } void rename_last_inherit(struct pike_string *n) { if(Pike_compiler->new_program->inherits[Pike_compiler->new_program->num_inherits].name) free_string(Pike_compiler->new_program->inherits[Pike_compiler->new_program->num_inherits].name); copy_shared_string(Pike_compiler->new_program->inherits[Pike_compiler->new_program->num_inherits].name, n); } static int locate_parent_state(struct program_state **state, struct inherit **i, int *parent_identifier, int depth) { int result=1; if(depth<=0) return depth; while(depth-->0) { if( (*i)->parent_offset != -17) { int tmp=(*i)->parent_identifier; if( (*i)->parent_offset > 0) { int po=(*i)->parent_offset; *parent_identifier = (*state)->parent_identifier; *state = (*state)->previous; result++; fprintf(stderr,"INHERIT: state=state->previous (po=%d)\n",po); if(po>1) { *i=INHERIT_FROM_INT( (*state)->new_program, *parent_identifier); result+=locate_parent_state(state,i,parent_identifier, po-1); } } if(tmp != -1) { if( *parent_identifier == -4711) { *parent_identifier = tmp; }else{ *parent_identifier = tmp + INHERIT_FROM_INT( (*state)->new_program, *parent_identifier)->identifier_level; } } }else{ fprintf(stderr,"INHERIT: Bailout!\n"); return result+depth+1; } *i = INHERIT_FROM_INT( (*state)->new_program, *parent_identifier); } return result; } static int find_depth(struct program_state *state, struct inherit *i, int parent_identifier, int depth) { #if 0 int e; struct inherit *oi; for(e=0;e<=parent_offset;e++) state=state->previous; oi=INHERIT_FROM_INT(state->new_program, parent_identifier); parent_offset+=i->parent_offset; #endif return locate_parent_state(&state, &i, &parent_identifier, depth); } /* * make this program inherit another program */ void low_inherit(struct program *p, struct object *parent, int parent_identifier, int parent_offset, INT32 flags, struct pike_string *name) { int e; ptrdiff_t inherit_offset, storage_offset; struct inherit inherit; #if 0 fprintf(stderr,"%p low_inherit(pid=%d, parent=%p, parid=%d, " "paroff=%d, flags=0x%x, name=%s);\n", Pike_compiler->new_program, p ? p->id : 0, parent, parent_identifier, parent_offset, flags, name? name->str : ""); #endif CDFPRINTF((stderr, "th(%ld) %p inherit %p\n", (long) th_self(), Pike_compiler->new_program, p)); if(!p) { yyerror("Illegal program pointer."); return; } #ifdef PIKE_DEBUG if (p == placeholder_program) fatal("Trying to inherit placeholder_program.\n"); #endif if(p->flags & PROGRAM_NEEDS_PARENT) { struct program_state *state=Pike_compiler; if(!parent && !parent_offset) { yyerror("Parent pointer lost, cannot inherit!"); /* We inherit it anyway, to avoid causing more errors */ } #if 0 /* FIXME: we don't really need to set this flag on ALL * previous compilations, but I'm too lazy to figure out * exactly how deep down we need to go... */ for(e=0;e<compilation_depth;e++,state=state->previous) state->new_program->flags |= PROGRAM_USES_PARENT; #endif } /* parent offset was increased by 42 for above test.. */ if(parent_offset) parent_offset-=42; if(!(p->flags & (PROGRAM_FINISHED | PROGRAM_PASS_1_DONE))) { yyerror("Cannot inherit program which is not fully compiled yet."); return; } inherit_offset = Pike_compiler->new_program->num_inherits; /* alignment magic */ storage_offset=p->inherits[0].storage_offset % p->alignment_needed; storage_offset=low_add_storage(STORAGE_NEEDED(p), p->alignment_needed, storage_offset); /* Without this, the inherit becomes skewed */ storage_offset-=p->inherits[0].storage_offset; for(e=0; e<(int)p->num_inherits; e++) { inherit=p->inherits[e]; add_ref(inherit.prog); inherit.identifier_level += Pike_compiler->new_program->num_identifier_references; inherit.storage_offset += storage_offset; inherit.inherit_level ++; if(!e) { if(parent) { if(parent->next == parent) { #if 0 struct object *o; inherit.parent_offset=0; for(o=Pike_compiler->fake_object;o!=parent;o=o->parent) { #ifdef PIKE_DEBUG if(!o) fatal("low_inherit with odd Pike_compiler->fake_object as parent!\n"); #endif inherit.parent_offset++; } #else struct program_state *state=Pike_compiler; inherit.parent_offset=0; for(;state->fake_object!=parent;state=state->previous) { #ifdef PIKE_DEBUG if(!state->fake_object) fatal("low_inherit with odd Pike_compiler->fake_object as parent!\n"); #endif inherit.parent_offset++; } #endif }else{ inherit.parent=parent; inherit.parent_identifier=parent_identifier; inherit.parent_offset=-17; } }else{ inherit.parent_offset=parent_offset; inherit.parent_identifier=parent_identifier; } }else{ if(!inherit.parent) { if(parent && parent->next != parent && inherit.parent_offset) { /* Fake object */ struct object *par=parent; int e,pid=parent_identifier; for(e=1;e<inherit.parent_offset;e++) { struct inherit *in; if(!par->prog) { par=0; pid=-1; break; } in=INHERIT_FROM_INT(par->prog, pid); switch(in->parent_offset) { default: { struct external_variable_context tmp; struct inherit *in2=in; while(in2->identifier_level >= in->identifier_level) in2--; tmp.o=par; tmp.inherit=in2; tmp.parent_identifier=pid; find_external_context(&tmp, in->parent_offset); par = tmp.o; pid = tmp.parent_identifier; } break; case -17: pid = in->parent_identifier; par = in->parent; break; case -18: if(par->prog->flags & PROGRAM_USES_PARENT) { pid = PARENT_INFO(par)->parent_identifier; par = PARENT_INFO(par)->parent; }else{ pid=-1; par=0; } } } inherit.parent=par; inherit.parent_offset=-17; } } } if(inherit.parent) add_ref(inherit.parent); if(name) { if(e==0) { copy_shared_string(inherit.name,name); } else if(inherit.name) { struct pike_string *s; s=begin_shared_string(inherit.name->len + name->len + 2); MEMCPY(s->str,name->str,name->len); MEMCPY(s->str+name->len,"::",2); MEMCPY(s->str+name->len+2,inherit.name->str,inherit.name->len); inherit.name=end_shared_string(s); } else { inherit.name=0; } }else{ inherit.name=0; } add_to_inherits(inherit); } for (e=0; e < (int)p->num_identifier_references; e++) { struct reference fun; struct pike_string *name; fun = p->identifier_references[e]; /* Make a copy */ name=ID_FROM_PTR(p,&fun)->name; fun.inherit_offset += inherit_offset; if (fun.id_flags & ID_NOMASK) { Pike_compiler->check_final++; } if(fun.id_flags & ID_PRIVATE) fun.id_flags|=ID_HIDDEN; if (fun.id_flags & ID_PUBLIC) fun.id_flags |= flags & ~ID_PRIVATE; else fun.id_flags |= flags; fun.id_flags |= ID_INHERITED; add_to_identifier_references(fun); } } PMOD_EXPORT void do_inherit(struct svalue *s, INT32 flags, struct pike_string *name) { struct program *p=program_from_svalue(s); low_inherit(p, s->type == T_FUNCTION ? s->u.object : 0, s->type == T_FUNCTION ? s->subtype : -1, 0, flags, name); } void compiler_do_inherit(node *n, INT32 flags, struct pike_string *name) { struct program *p; struct identifier *i; INT32 numid=-1, offset=0; if(!n) { yyerror("Unable to inherit"); return; } switch(n->token) { case F_IDENTIFIER: p=Pike_compiler->new_program; offset=0; numid=n->u.id.number; goto continue_inherit; case F_EXTERNAL: { struct program_state *state = Pike_compiler; offset = 0; while (state && (state->new_program->id != n->u.integer.a)) { state = state->previous; offset++; } if (!state) { yyerror("Failed to resolv external constant.\n"); return; } p = state->new_program; numid = n->u.integer.b; } continue_inherit: i=ID_FROM_INT(p, numid); if(IDENTIFIER_IS_CONSTANT(i->identifier_flags)) { struct svalue *s=&PROG_FROM_INT(p, numid)-> constants[i->func.offset].sval; if(s->type != T_PROGRAM) { do_inherit(s,flags,name); return; }else{ p=s->u.program; } }else{ yyerror("Inherit identifier is not a constant program"); return; } low_inherit(p, 0, numid, offset+42, flags, name); break; default: resolv_class(n); do_inherit(Pike_sp-1, flags, name); pop_stack(); } } int call_handle_inherit(struct pike_string *s) { int args; reference_shared_string(s); push_string(s); ref_push_string(lex.current_file); if (error_handler && error_handler->prog) { ref_push_object(error_handler); args = 3; } else args = 2; if (safe_apply_handler("handle_inherit", error_handler, compat_handler, args, BIT_PROGRAM|BIT_FUNCTION|BIT_ZERO)) if (Pike_sp[-1].type != T_INT) return 1; else { pop_stack(); if (!s->size_shift) my_yyerror("Couldn't find program: %s",s->str); else yyerror("Couldn't find program"); } else { struct svalue thrown = throw_value; throw_value.type = T_INT; my_yyerror("Error finding program"); push_svalue(&thrown); low_safe_apply_handler("compile_exception", error_handler, compat_handler, 1); if (SAFE_IS_ZERO(sp-1)) yy_describe_exception(&thrown); pop_stack(); free_svalue(&thrown); } return 0; } void simple_do_inherit(struct pike_string *s, INT32 flags, struct pike_string *name) { if (!call_handle_inherit(s)) return; if(name) { free_string(s); s=name; } do_inherit(Pike_sp-1, flags, s); free_string(s); pop_stack(); } /* * Return the index of the identifier found, otherwise -1. */ int isidentifier(struct pike_string *s) { INT32 e; for(e=Pike_compiler->new_program->num_identifier_references-1;e>=0;e--) { if(Pike_compiler->new_program->identifier_references[e].id_flags & ID_HIDDEN) continue; if(ID_FROM_INT(Pike_compiler->new_program, e)->name == s) return e; } return -1; } /* argument must be a shared string */ int low_define_variable(struct pike_string *name, struct pike_type *type, INT32 flags, size_t offset, INT32 run_time_type) { int n; struct identifier dummy; struct reference ref; #ifdef PIKE_DEBUG if(Pike_compiler->new_program->flags & (PROGRAM_FIXED | PROGRAM_OPTIMIZED)) fatal("Attempting to add variable to fixed program\n"); if(Pike_compiler->compiler_pass==2) fatal("Internal error: Not allowed to add more identifiers during second compiler pass.\n" "Added identifier: \"%s\"\n", name->str); #endif copy_shared_string(dummy.name, name); copy_pike_type(dummy.type, type); if (flags & ID_ALIAS) { dummy.identifier_flags = IDENTIFIER_ALIAS; } else { dummy.identifier_flags = 0; } dummy.run_time_type=run_time_type; dummy.func.offset=offset - Pike_compiler->new_program->inherits[0].storage_offset; #ifdef PROFILING dummy.self_time=0; dummy.num_calls=0; dummy.total_time=0; #endif ref.id_flags=flags; ref.identifier_offset=Pike_compiler->new_program->num_identifiers; ref.inherit_offset=0; add_to_variable_index(ref.identifier_offset); add_to_identifiers(dummy); n=Pike_compiler->new_program->num_identifier_references; add_to_identifier_references(ref); return n; } PMOD_EXPORT int map_variable(char *name, char *type, INT32 flags, size_t offset, INT32 run_time_type) { int ret; struct pike_string *n; struct pike_type *t; #ifdef PROGRAM_BUILD_DEBUG fprintf (stderr, "%.*sdefining variable (pass=%d): %s %s\n", compilation_depth, " ", Pike_compiler->compiler_pass, type, name); #endif n=make_shared_string(name); t=parse_type(type); ret=low_define_variable(n,t,flags,offset,run_time_type); free_string(n); free_type(t); return ret; } PMOD_EXPORT int quick_map_variable(char *name, int name_length, size_t offset, char *type, int type_length, INT32 run_time_type, INT32 flags) { int ret; struct pike_string *n; struct pike_type *t; #ifdef PROGRAM_BUILD_DEBUG fprintf (stderr, "%.*sdefining variable (pass=%d): %s %s\n", compilation_depth, " ", Pike_compiler->compiler_pass, type, name); #endif n = make_shared_binary_string(name, name_length); #ifdef USE_PIKE_TYPE t = make_pike_type(type); #else /* !USE_PIKE_TYPE */ t = make_shared_binary_string(type, type_length); #endif /* USE_PIKE_TYPE */ ret=low_define_variable(n,t,flags,offset,run_time_type); free_string(n); free_type(t); return ret; } /* argument must be a shared string */ int define_variable(struct pike_string *name, struct pike_type *type, INT32 flags) { int n, run_time_type; #ifdef PIKE_DEBUG if(name!=debug_findstring(name)) fatal("define_variable on nonshared string.\n"); #endif #ifdef PROGRAM_BUILD_DEBUG { struct pike_string *d = describe_type (type); fprintf (stderr, "%.*sdefining variable (pass=%d): %s ", compilation_depth, " ", Pike_compiler->compiler_pass, d->str); free_string (d); push_string (name); print_svalue (stderr, --Pike_sp); putc ('\n', stderr); } #endif if(type == void_type_string) yyerror("Variables can't be of type void"); n = isidentifier(name); if(Pike_compiler->new_program->flags & PROGRAM_PASS_1_DONE) { if(n==-1) yyerror("Pass2: Variable disappeared!"); else { struct identifier *id=ID_FROM_INT(Pike_compiler->new_program,n); free_type(id->type); copy_pike_type(id->type, type); return n; } } #ifdef PIKE_DEBUG if(Pike_compiler->new_program->flags & (PROGRAM_FIXED | PROGRAM_OPTIMIZED)) fatal("Attempting to add variable to fixed program\n"); #endif if(n != -1) { /* not inherited */ if(Pike_compiler->new_program->identifier_references[n].inherit_offset == 0) { if (!((IDENTIFIERP(n)->id_flags | flags) & ID_EXTERN)) { my_yyerror("Identifier '%s' defined twice.",name->str); return n; } if (flags & ID_EXTERN) { /* FIXME: Check type */ return n; } } if (!(IDENTIFIERP(n)->id_flags & ID_EXTERN)) { if (IDENTIFIERP(n)->id_flags & ID_NOMASK) my_yyerror("Illegal to redefine 'nomask/final' " "variable/functions \"%s\"", name->str); if(!(IDENTIFIERP(n)->id_flags & ID_INLINE) || Pike_compiler->compiler_pass!=1) { int n2; if(ID_FROM_INT(Pike_compiler->new_program, n)->type != type && !pike_types_le(type, ID_FROM_INT(Pike_compiler->new_program, n)->type)) { if (!match_types(ID_FROM_INT(Pike_compiler->new_program, n)->type, type)) { my_yyerror("Illegal to redefine inherited variable '%s' " "with different type.", name->str); return n; } else { yywarning("Redefining inherited variable '%s' " "with different type.", name->str); } } if(!IDENTIFIER_IS_VARIABLE(ID_FROM_INT(Pike_compiler->new_program, n)-> identifier_flags)) { my_yyerror("Illegal to redefine inherited variable " "with different type."); return n; } if ((ID_FROM_INT(Pike_compiler->new_program, n)->run_time_type != PIKE_T_MIXED) && (ID_FROM_INT(Pike_compiler->new_program, n)->run_time_type != compile_type_to_runtime_type(type))) { my_yyerror("Illegal to redefine inherited variable " "with different type."); return n; } /* Copy the variable reference, so that we can change the * compile-time type. */ n2 = low_define_variable(name, type, (flags | ID_ALIAS) & ~ID_EXTERN, ID_FROM_INT(Pike_compiler->new_program, n)-> func.offset + INHERIT_FROM_INT(Pike_compiler->new_program, n)->storage_offset, ID_FROM_INT(Pike_compiler->new_program, n)-> run_time_type); /* Hide the old variable. */ Pike_compiler->new_program->identifier_references[n].id_flags |= ID_STATIC|ID_PRIVATE; return n2; } } } run_time_type=compile_type_to_runtime_type(type); switch(run_time_type) { #ifdef AUTO_BIGNUM #if 0 case T_OBJECT: /* This is to allow room for integers in variables declared as * 'object', however, this could be changed in the future to only * make room for integers if the variable was declared as * 'object(Gmp.mpz)' /Hubbe */ #endif case T_INT: #endif case T_FUNCTION: case T_PROGRAM: run_time_type = T_MIXED; } n=low_define_variable(name,type,flags, low_add_storage(sizeof_variable(run_time_type), alignof_variable(run_time_type),0), run_time_type); return n; } PMOD_EXPORT int simple_add_variable(char *name, char *type, INT32 flags) { INT32 ret; struct pike_string *name_s; struct pike_type *type_s; name_s = make_shared_string(name); type_s = parse_type(type); ret=define_variable(name_s, type_s, flags); free_string(name_s); free_type(type_s); return ret; } PMOD_EXPORT int add_constant(struct pike_string *name, struct svalue *c, INT32 flags) { int n; struct identifier dummy; struct reference ref; #ifdef PROGRAM_BUILD_DEBUG { if (c) { struct pike_type *t = get_type_of_svalue(c); struct pike_string *d = describe_type (t); fprintf (stderr, "%.*sdefining constant (pass=%d): %s ", compilation_depth, " ", Pike_compiler->compiler_pass, d->str); free_type(t); free_string (d); } else fprintf (stderr, "%.*sdeclaring constant (pass=%d): ", compilation_depth, " ", Pike_compiler->compiler_pass); push_string (name); print_svalue (stderr, --Pike_sp); putc ('\n', stderr); } #endif #ifdef PIKE_DEBUG if(name!=debug_findstring(name)) fatal("define_constant on nonshared string.\n"); #endif do { if(c && c->type == T_FUNCTION && c->subtype != FUNCTION_BUILTIN && c->u.object->prog) { struct identifier *id=ID_FROM_INT(c->u.object->prog, c->subtype); if(c->u.object->prog == Pike_compiler->new_program && !c->u.object->prog->identifier_references[c->subtype].inherit_offset) { if(id->identifier_flags & IDENTIFIER_FUNCTION) { return define_function(name, id->type, flags, id->identifier_flags | IDENTIFIER_ALIAS, & id->func, id->opt_flags); } else if((id->identifier_flags & IDENTIFIER_CONSTANT) && id->func.offset != -1) { c=& Pike_compiler->new_program->constants[id->func.offset].sval; } } else { if((id->identifier_flags & IDENTIFIER_CONSTANT) && id->func.offset != -1 && INHERIT_FROM_INT(c->u.object->prog, c->subtype)->prog-> constants[id->func.offset].sval.type == T_PROGRAM) { /* In this one case we allow fake objects to enter the * mainstream... */ break; } } } if(c && !svalues_are_constant(c,1,BIT_MIXED,0)) yyerror("Constant values may not have references this_object()"); }while(0); n = isidentifier(name); if(Pike_compiler->new_program->flags & PROGRAM_PASS_1_DONE) { if(n==-1) { yyerror("Pass2: Constant disappeared!"); }else{ struct identifier *id; id=ID_FROM_INT(Pike_compiler->new_program,n); if(id->func.offset>=0) { struct pike_type *s; struct svalue *c=&PROG_FROM_INT(Pike_compiler->new_program,n)-> constants[id->func.offset].sval; s=get_type_of_svalue(c); free_type(id->type); id->type=s; } else { #ifdef PIKE_DEBUG if (!c) fatal("Can't declare constant during second compiler pass\n"); #endif free_type(id->type); id->type = get_type_of_svalue(c); id->run_time_type = c->type; id->func.offset = store_constant(c, 0, 0); } return n; } } #ifdef PIKE_DEBUG if(Pike_compiler->new_program->flags & (PROGRAM_FIXED | PROGRAM_OPTIMIZED)) fatal("Attempting to add constant to fixed program\n"); if(Pike_compiler->compiler_pass==2) fatal("Internal error: Not allowed to add more identifiers during second compiler pass.\n"); #endif copy_shared_string(dummy.name, name); dummy.identifier_flags = IDENTIFIER_CONSTANT; if (c) { dummy.type = get_type_of_svalue(c); dummy.run_time_type=c->type; dummy.func.offset=store_constant(c, 0, 0); dummy.opt_flags=OPT_SIDE_EFFECT | OPT_EXTERNAL_DEPEND; if(c->type == PIKE_T_PROGRAM && (c->u.program->flags & PROGRAM_CONSTANT)) dummy.opt_flags=0; } else { copy_pike_type(dummy.type, mixed_type_string); dummy.run_time_type=T_MIXED; dummy.func.offset=-1; dummy.opt_flags=0; } ref.id_flags=flags; ref.identifier_offset=Pike_compiler->new_program->num_identifiers; ref.inherit_offset=0; #ifdef PROFILING dummy.self_time=0; dummy.num_calls=0; dummy.total_time=0; #endif add_to_identifiers(dummy); if(n != -1) { if(IDENTIFIERP(n)->id_flags & ID_NOMASK) my_yyerror("Illegal to redefine 'nomask' identifier \"%s\"", name->str); if(!TEST_COMPAT(7,2) && IDENTIFIER_IS_VARIABLE(ID_FROM_INT(Pike_compiler->new_program, n)->identifier_flags)) { my_yyerror("Illegal to redefine variable \"%s\" as constant.", name->str); } /* not inherited */ if(Pike_compiler->new_program->identifier_references[n].inherit_offset == 0) { my_yyerror("Identifier '%s' defined twice.",name->str); return n; } if(!(IDENTIFIERP(n)->id_flags & ID_INLINE)) { /* override */ Pike_compiler->new_program->identifier_references[n]=ref; return n; } } n=Pike_compiler->new_program->num_identifier_references; add_to_identifier_references(ref); return n; } PMOD_EXPORT int simple_add_constant(char *name, struct svalue *c, INT32 flags) { INT32 ret; struct pike_string *id; id=make_shared_string(name); ret=add_constant(id, c, flags); free_string(id); return ret; } PMOD_EXPORT int add_integer_constant(char *name, INT32 i, INT32 flags) { struct svalue tmp; tmp.u.integer=i; tmp.type=T_INT; tmp.subtype=NUMBER_NUMBER; return simple_add_constant(name, &tmp, flags); } PMOD_EXPORT int quick_add_integer_constant(char *name, int name_length, INT32 i, INT32 flags) { struct svalue tmp; struct pike_string *id; INT32 ret; tmp.u.integer=i; tmp.type=T_INT; tmp.subtype=NUMBER_NUMBER; id=make_shared_binary_string(name,name_length); ret=add_constant(id, &tmp, flags); free_string(id); return ret; } PMOD_EXPORT int add_float_constant(char *name, double f, INT32 flags) { struct svalue tmp; tmp.type=T_FLOAT; tmp.u.float_number = DO_NOT_WARN((FLOAT_TYPE)f); tmp.subtype=0; return simple_add_constant(name, &tmp, flags); } PMOD_EXPORT int add_string_constant(char *name, char *str, INT32 flags) { INT32 ret; struct svalue tmp; tmp.type=T_STRING; tmp.subtype=0; tmp.u.string=make_shared_string(str); ret=simple_add_constant(name, &tmp, flags); free_svalue(&tmp); return ret; } PMOD_EXPORT int add_program_constant(char *name, struct program *p, INT32 flags) { INT32 ret; struct svalue tmp; tmp.type=T_PROGRAM; tmp.subtype=0; tmp.u.program=p; ret=simple_add_constant(name, &tmp, flags); return ret; } PMOD_EXPORT int add_object_constant(char *name, struct object *o, INT32 flags) { INT32 ret; struct svalue tmp; tmp.type=T_OBJECT; tmp.subtype=0; tmp.u.object=o; ret=simple_add_constant(name, &tmp, flags); return ret; } PMOD_EXPORT int add_function_constant(char *name, void (*cfun)(INT32), char * type, INT16 flags) { struct svalue s; INT32 ret; s.type=T_FUNCTION; s.subtype=FUNCTION_BUILTIN; s.u.efun=make_callable(cfun, name, type, flags, 0, 0); ret=simple_add_constant(name, &s, 0); free_svalue(&s); return ret; } PMOD_EXPORT int debug_end_class(char *name, ptrdiff_t namelen, INT32 flags) { INT32 ret; struct svalue tmp; struct pike_string *id; tmp.type=T_PROGRAM; tmp.subtype=0; tmp.u.program=end_program(); if(!tmp.u.program) fatal("Failed to initialize class '%s'\n",name); id=make_shared_binary_string(name,namelen); ret=add_constant(id, &tmp, flags); free_string(id); free_svalue(&tmp); return ret; } /* * define a new function * if func isn't given, it is supposed to be a prototype. */ INT32 define_function(struct pike_string *name, struct pike_type *type, unsigned INT8 flags, unsigned INT8 function_flags, union idptr *func, unsigned INT16 opt_flags) { struct identifier *funp,fun; struct reference ref; struct svalue *lfun_type; INT32 i; #ifdef PROGRAM_BUILD_DEBUG { struct pike_string *d = describe_type (type); fprintf (stderr, "%.*sdefining function (pass=%d): %s ", compilation_depth, " ", Pike_compiler->compiler_pass, d->str); free_string (d); push_string (name); print_svalue (stderr, --Pike_sp); putc ('\n', stderr); } #endif #ifdef PROFILING fun.self_time=0; fun.num_calls=0; fun.total_time=0; #endif /* If this is an lfun, match against the predefined type. */ if ((lfun_type = low_mapping_string_lookup(lfun_types, name))) { #ifdef PIKE_DEBUG if (lfun_type->type != T_TYPE) { fatal("Bad entry in lfun_types for key \"%s\"\n", name->str); } #endif /* PIKE_DEBUG */ if (!pike_types_le(type, lfun_type->u.type)) { if (!match_types(type, lfun_type->u.type)) { yytype_error("Function type mismatch", lfun_type->u.type, type, 0); } else if (lex.pragmas & ID_STRICT_TYPES) { yytype_error("Function type mismatch", lfun_type->u.type, type, YYTE_IS_WARNING); } } } if(function_flags & IDENTIFIER_C_FUNCTION) Pike_compiler->new_program->flags |= PROGRAM_HAS_C_METHODS; i=isidentifier(name); if(i >= 0) { /* already defined */ funp=ID_FROM_INT(Pike_compiler->new_program, i); ref=Pike_compiler->new_program->identifier_references[i]; if(ref.inherit_offset == 0) /* not inherited */ { if( !( IDENTIFIER_IS_FUNCTION(funp->identifier_flags) && ( (!func || func->offset == -1) || (funp->func.offset == -1)))) { my_yyerror("Identifier '%s' defined twice.",name->str); return i; } /* match types against earlier prototype or vice versa */ if(!match_types(type, funp->type)) { if (!(flags & ID_VARIANT)) { my_yyerror("Prototype doesn't match for function %s.",name->str); } } } /* We modify the old definition if it is in this program */ if(ref.inherit_offset==0) { if(func) funp->func = *func; #if 0 /* prototypes does not override non-prototypes, ok? */ else funp->func.offset = -1; #endif funp->identifier_flags=function_flags; funp->opt_flags &= opt_flags; free_type(funp->type); copy_pike_type(funp->type, type); }else{ if((ref.id_flags & ID_NOMASK) #if 0 && !(funp->func.offset == -1) #endif ) { my_yyerror("Illegal to redefine 'nomask' function %s.",name->str); } if(ref.id_flags & ID_INLINE) { goto make_a_new_def; } /* Otherwise we make a new definition */ copy_shared_string(fun.name, name); copy_pike_type(fun.type, type); fun.run_time_type=T_FUNCTION; fun.identifier_flags=function_flags; if(function_flags & IDENTIFIER_C_FUNCTION) Pike_compiler->new_program->flags |= PROGRAM_HAS_C_METHODS; if(func) fun.func = *func; else fun.func.offset = -1; fun.opt_flags = opt_flags; ref.identifier_offset=Pike_compiler->new_program->num_identifiers; add_to_identifiers(fun); } ref.inherit_offset = 0; ref.id_flags = flags; #if 0 Pike_compiler->new_program->identifier_references[i]=ref; #else { int z; /* This loop could possibly be optimized by looping over * each inherit and looking up 'name' in each inherit * and then see if should be overwritten * /Hubbe */ for(z=0;z<Pike_compiler->new_program->num_identifier_references;z++) { /* Do zapp hidden identifiers */ if(Pike_compiler->new_program->identifier_references[z].id_flags & ID_HIDDEN) continue; /* Do not zapp inline ('local') identifiers */ if(Pike_compiler->new_program->identifier_references[z].inherit_offset && (Pike_compiler->new_program->identifier_references[z].id_flags & ID_INLINE)) continue; /* Do not zapp functions with the wrong name... */ if(ID_FROM_INT(Pike_compiler->new_program, z)->name != name) continue; Pike_compiler->new_program->identifier_references[z]=ref; } #ifdef PIKE_DEBUG if(MEMCMP(Pike_compiler->new_program->identifier_references+i, &ref,sizeof(ref))) fatal("New function overloading algorithm failed!\n"); #endif } #endif return i; } make_a_new_def: #ifdef PIKE_DEBUG if(Pike_compiler->compiler_pass==2) fatal("Internal error: Not allowed to add more identifiers during second compiler pass.\n"); #endif /* define a new function */ copy_shared_string(fun.name, name); copy_pike_type(fun.type, type); fun.identifier_flags=function_flags; fun.run_time_type=T_FUNCTION; if(func) fun.func = *func; else fun.func.offset = -1; fun.opt_flags = opt_flags; i=Pike_compiler->new_program->num_identifiers; add_to_identifiers(fun); ref.id_flags = flags; ref.identifier_offset = i; ref.inherit_offset = 0; i=Pike_compiler->new_program->num_identifier_references; add_to_identifier_references(ref); return i; } int really_low_find_shared_string_identifier(struct pike_string *name, struct program *prog, int flags) { struct reference *funp; struct identifier *fun; int i,t; #if 0 CDFPRINTF((stderr,"th(%ld) Trying to find %s flags=%d\n", (long)th_self(),name->str, flags)); #endif #ifdef PIKE_DEBUG if (!prog) { fatal("really_low_find_shared_string_identifier(\"%s\", NULL, %d)\n" "prog is NULL!\n", name->str, flags); } #endif /* PIKE_DEBUG */ for(i=0;i<(int)prog->num_identifier_references;i++) { funp = prog->identifier_references + i; if(funp->id_flags & ID_HIDDEN) continue; if(funp->id_flags & ID_STATIC) if(!(flags & SEE_STATIC)) continue; fun = ID_FROM_PTR(prog, funp); /* if(fun->func.offset == -1) continue; * Prototype */ if(!is_same_string(fun->name,name)) continue; if(funp->id_flags & ID_INHERITED) { if(funp->id_flags & ID_PRIVATE) continue; for(t=0; t>=0 && t<(int)prog->num_identifier_references; t++) { struct reference *funpb; struct identifier *funb; if(t==i) continue; funpb=prog->identifier_references+t; if(funpb->id_flags & ID_HIDDEN) continue; if(funpb->id_flags & ID_STATIC) if(!(flags & SEE_STATIC)) continue; if((funpb->id_flags & ID_INHERITED) && t<i) continue; funb=ID_FROM_PTR(prog,funpb); /* if(funb->func.offset == -1) continue; * prototype */ if(fun->name==funb->name) t=-10; } if(t < 0) continue; } return i; } return -1; } int low_find_lfun(struct program *p, ptrdiff_t lfun) { struct pike_string *lfun_name = lfun_strings[lfun]; unsigned int flags = 0; return really_low_find_shared_string_identifier(lfun_name, dmalloc_touch(struct program *, p), SEE_STATIC); } int lfun_lookup_id(struct pike_string *lfun_name) { struct svalue *id = low_mapping_string_lookup(lfun_ids, lfun_name); if (!id) return -1; if (id->type == T_INT) return id->u.integer; my_yyerror("Bad entry in lfun lookup table for %s.", lfun_name->str); return -1; } /* * lookup the number of a function in a program given the name in * a shared_string */ int low_find_shared_string_identifier(struct pike_string *name, struct program *prog) { int max,min,tst; struct identifier *fun; if(prog->flags & PROGRAM_FIXED) { unsigned short *funindex = prog->identifier_index; #ifdef PIKE_DEBUG if(!funindex) fatal("No funindex in fixed program\n"); #endif max = prog->num_identifier_index; min = 0; while(max != min) { tst=(max + min) >> 1; fun = ID_FROM_INT(prog, funindex[tst]); if(is_same_string(fun->name,name)) return funindex[tst]; if(my_order_strcmp(fun->name, name) > 0) max=tst; else min=tst+1; } }else{ return really_low_find_shared_string_identifier(name,prog,0); } return -1; } #ifdef FIND_FUNCTION_HASHSIZE #if FIND_FUNCTION_HASHSIZE == 0 #undef FIND_FUNCTION_HASHSIZE #endif #endif #ifdef FIND_FUNCTION_HASHSIZE struct ff_hash { struct pike_string *name; int id; int fun; }; static struct ff_hash cache[FIND_FUNCTION_HASHSIZE]; #endif int find_shared_string_identifier(struct pike_string *name, struct program *prog) { #ifdef PIKE_DEBUG if (!prog) { fatal("find_shared_string_identifier(): No program!\n" "Identifier: %s%s%s\n", name?"\"":"", name?name->str:"NULL", name?"\"":""); } #endif /* PIKE_DEBUG */ #ifdef FIND_FUNCTION_HASHSIZE if(prog -> flags & PROGRAM_FIXED #if FIND_FUNCTION_HASH_TRESHOLD - 0 && prog->num_identifier_index >= FIND_FUNCTION_HASH_TRESHOLD #endif ) { size_t hashval; hashval = my_hash_string(name); hashval += prog->id; hashval %= FIND_FUNCTION_HASHSIZE; if(is_same_string(cache[hashval].name,name) && cache[hashval].id==prog->id) return cache[hashval].fun; if(cache[hashval].name) free_string(cache[hashval].name); copy_shared_string(cache[hashval].name,name); cache[hashval].id=prog->id; return cache[hashval].fun=low_find_shared_string_identifier(name,prog); } #endif /* FIND_FUNCTION_HASHSIZE */ return low_find_shared_string_identifier(name,prog); } PMOD_EXPORT int find_identifier(const char *name,struct program *prog) { struct pike_string *n; if(!prog) { if (strlen(name) < 1024) { Pike_error("Lookup of identifier %s in destructed object.\n", name); } else { Pike_error("Lookup of long identifier in destructed object.\n"); } } n=findstring(name); if(!n) return -1; return find_shared_string_identifier(n,prog); } int store_prog_string(struct pike_string *str) { unsigned int i; for (i=0;i<Pike_compiler->new_program->num_strings;i++) if (Pike_compiler->new_program->strings[i] == str) return i; reference_shared_string(str); add_to_strings(str); return i; } int store_constant(struct svalue *foo, int equal, struct pike_string *constant_name) { struct program_constant tmp; unsigned int e; JMP_BUF tmp2; if(SETJMP(tmp2)) { struct svalue zero, thrown = throw_value; throw_value.type = T_INT; yyerror("Couldn't store constant."); push_svalue(&thrown); low_safe_apply_handler("compile_exception", error_handler, compat_handler, 1); if (SAFE_IS_ZERO(sp-1)) yy_describe_exception(&thrown); pop_stack(); free_svalue(&thrown); zero.type = T_INT; zero.subtype = NUMBER_NUMBER; zero.u.integer=0; UNSETJMP(tmp2); return store_constant(&zero, equal, constant_name); }else{ for(e=0;e<Pike_compiler->new_program->num_constants;e++) { struct program_constant *c= Pike_compiler->new_program->constants+e; if((equal ? is_equal(& c->sval,foo) : is_eq(& c->sval,foo)) && c->name == constant_name) { UNSETJMP(tmp2); return e; } } assign_svalue_no_free(&tmp.sval,foo); if((tmp.name=constant_name)) add_ref(constant_name); add_to_constants(tmp); UNSETJMP(tmp2); return e; } } /* * program examination functions available from Pike. */ struct array *program_indices(struct program *p) { int e; int n = 0; struct array *res; for (e = p->num_identifier_references; e--; ) { struct identifier *id; if (p->identifier_references[e].id_flags & ID_HIDDEN) { continue; } id = ID_FROM_INT(p, e); if (IDENTIFIER_IS_CONSTANT(id->identifier_flags)) { struct program *p2 = PROG_FROM_INT(p, e); struct svalue *val = &p2->constants[id->func.offset].sval; if ((val->type != T_PROGRAM) || !(val->u.program->flags & PROGRAM_USES_PARENT)) { ref_push_string(ID_FROM_INT(p, e)->name); n++; } } } f_aggregate(n); res = Pike_sp[-1].u.array; add_ref(res); pop_stack(); return(res); } struct array *program_values(struct program *p) { int e; int n = 0; struct array *res; for(e = p->num_identifier_references; e--; ) { struct identifier *id; if (p->identifier_references[e].id_flags & ID_HIDDEN) { continue; } id = ID_FROM_INT(p, e); if (IDENTIFIER_IS_CONSTANT(id->identifier_flags)) { struct program *p2 = PROG_FROM_INT(p, e); struct svalue *val = &p2->constants[id->func.offset].sval; if ((val->type != T_PROGRAM) || !(val->u.program->flags & PROGRAM_USES_PARENT)) { push_svalue(val); n++; } } } f_aggregate(n); res = Pike_sp[-1].u.array; add_ref(res); pop_stack(); return(res); } void program_index_no_free(struct svalue *to, struct program *p, struct svalue *ind) { int e; struct pike_string *s; if (ind->type != T_STRING) { Pike_error("Can't index a program with a %s (expected string)\n", get_name_of_type(ind->type)); } s = ind->u.string; e=find_shared_string_identifier(s, p); if(e!=-1) { struct identifier *id; id=ID_FROM_INT(p, e); if (IDENTIFIER_IS_CONSTANT(id->identifier_flags)) { struct program *p2 = PROG_FROM_INT(p, e); struct svalue *val = &p2->constants[id->func.offset].sval; assign_svalue_no_free(to, val); return; } } to->type=T_INT; to->subtype=NUMBER_UNDEFINED; to->u.integer=0; } /* * Line number support routines, now also tells what file we are in */ int get_small_number(char **q) { /* This is a workaround for buggy cc & Tru64 */ int ret; ret=*(signed char *)*q; (*q)++; switch(ret) { case -127: ret=EXTRACT_WORD((unsigned char*)*q); *q+=2; return ret; case -128: ret=EXTRACT_INT((unsigned char*)*q); *q+=4; return ret; default: return ret; } } void start_line_numbering(void) { if(Pike_compiler->last_file) { free_string(Pike_compiler->last_file); Pike_compiler->last_file=0; } Pike_compiler->last_pc=Pike_compiler->last_line=0; } static void insert_small_number(INT32 a) { #ifdef PIKE_DEBUG int start = Pike_compiler->new_program->num_linenumbers; #endif /* PIKE_DEBUG */ if(a>-127 && a<127) { add_to_linenumbers(a); }else if(a>=-32768 && a<32768){ add_to_linenumbers(-127); ins_short(a, add_to_linenumbers); }else{ add_to_linenumbers(-128); ins_int(a, add_to_linenumbers); } #ifdef PIKE_DEBUG { unsigned char *tmp = Pike_compiler->new_program->linenumbers + start; INT32 res = get_small_number((char **)&tmp); if (a != res) { tmp = Pike_compiler->new_program->linenumbers + start; fprintf(stderr, "0x%p: %02x %02x %02x %02x %02x\n", tmp, tmp[0], tmp[1], tmp[2], tmp[3], tmp[4]); fatal("insert_small_number failed: %d (0x%08x) != %d (0x%08x)\n", a, a, res, res); } } #endif /* PIKE_DEBUG */ } void store_linenumber(INT32 current_line, struct pike_string *current_file) { /* if(!store_linenumbers) fatal("Fnord.\n"); */ #ifdef PIKE_DEBUG if(a_flag) { INT32 line=0, off=0; size_t len = 0; INT32 shift = 0; char *file=0; char *cnt=Pike_compiler->new_program->linenumbers; if (a_flag > 50) { fprintf(stderr, "store_line_number(%d, \"%s\")\n", current_line, current_file->str); fprintf(stderr, " last_line:%d last_file:\"%s\"\n", Pike_compiler->last_line, Pike_compiler->last_file?Pike_compiler->last_file->str:""); } while(cnt < Pike_compiler->new_program->linenumbers + Pike_compiler->new_program->num_linenumbers) { char *start = cnt; if(*cnt == 127) { cnt++; len = get_small_number(&cnt); shift = *cnt; file = ++cnt; cnt += len<<shift; if (a_flag > 10) { fprintf(stderr, "Filename entry:\n" " len: %d, shift: %d\n", len, shift); } } off+=get_small_number(&cnt); line+=get_small_number(&cnt); if (a_flag > 100) { fprintf(stderr, " off: %d, line: %d\n" " raw: ", off, line); for (;start < cnt; start++) { fprintf(stderr, "%02x ", *((unsigned char *)start)); } fprintf(stderr, "\n"); } } if(Pike_compiler->last_line != line || Pike_compiler->last_pc != off || (Pike_compiler->last_file && file && memcmp(Pike_compiler->last_file->str, file, len<<shift))) { fatal("Line numbering out of whack\n" " (line : %d ?= %d)!\n" " ( pc : %d ?= %d)!\n" " (shift: %d ?= %d)!\n" " (len : %d ?= %d)!\n" " (file : %s ?= %s)!\n", Pike_compiler->last_line, line, Pike_compiler->last_pc, off, Pike_compiler->last_file?Pike_compiler->last_file->size_shift:0, shift, Pike_compiler->last_file?Pike_compiler->last_file->len:0, len, Pike_compiler->last_file?Pike_compiler->last_file->str:"N/A", file?file:"N/A"); } } #endif if(Pike_compiler->last_line != current_line || Pike_compiler->last_file != current_file) { if((Pike_compiler->last_file != current_file) || (DO_NOT_WARN((INT32)(PIKE_PC - Pike_compiler->last_pc)) == 127)) { char *tmp; INT32 remain = DO_NOT_WARN((INT32)current_file->len)<< current_file->size_shift; if(Pike_compiler->last_file) free_string(Pike_compiler->last_file); add_to_linenumbers(127); insert_small_number(DO_NOT_WARN((INT32)current_file->len)); add_to_linenumbers(current_file->size_shift); for(tmp=current_file->str; remain-- > 0; tmp++) add_to_linenumbers(*tmp); copy_shared_string(Pike_compiler->last_file, current_file); } insert_small_number(DO_NOT_WARN((INT32)(PIKE_PC-Pike_compiler->last_pc))); insert_small_number(current_line-Pike_compiler->last_line); Pike_compiler->last_line = current_line; Pike_compiler->last_pc = DO_NOT_WARN((INT32)PIKE_PC); } } /* Returns the file where the program is defined. The line of the * class start is written to linep, or 0 if the program is the top * level of the file. */ PMOD_EXPORT struct pike_string *get_program_line(struct program *prog, INT32 *linep) { char *cnt; size_t len = 0; INT32 shift = 0; char *file = NULL; if(prog == Pike_compiler->new_program) { struct pike_string *optimizer; linep[0]=0; MAKE_CONSTANT_SHARED_STRING(optimizer, "Optimizer"); return optimizer; } cnt = prog->linenumbers; if (cnt < prog->linenumbers + prog->num_linenumbers) { if (*cnt == 127) { cnt++; len = get_small_number(&cnt); shift = *cnt; file = ++cnt; cnt += len<<shift; } get_small_number(&cnt); /* Ignore the offset */ *linep = get_small_number(&cnt); } else *linep = 0; if (file) { struct pike_string *str = begin_wide_shared_string(len, shift); memcpy(str->str, file, len<<shift); return end_shared_string(str); } else { struct pike_string *dash; MAKE_CONSTANT_SHARED_STRING(dash, "-"); return dash; } } #ifdef PIKE_DEBUG /* Same as get_program_line but only used for debugging, * returns a char* * This is important because this function may be called * after the shared string table has expired. */ char *debug_get_program_line(struct program *prog, INT32 *linep) { char *cnt; size_t len = 0; INT32 shift = 0; char *file = NULL; static char buffer[1025]; if(prog == Pike_compiler->new_program) { linep[0]=0; return "optimizer"; } cnt = prog->linenumbers; if (cnt < prog->linenumbers + prog->num_linenumbers) { if (*cnt == 127) { cnt++; len = get_small_number(&cnt); shift = *cnt; file = ++cnt; cnt += len<<shift; } get_small_number(&cnt); /* Ignore the offset */ *linep = get_small_number(&cnt); } else *linep = 0; if (file) { if(shift) { PCHARP from=MKPCHARP(file, shift); size_t ptr=0; while(ptr < NELEM(buffer)-20 && EXTRACT_PCHARP(from)) { if(EXTRACT_PCHARP(from) > 255) { sprintf(buffer+ptr,"\\0x%x",EXTRACT_PCHARP(from)); ptr+=strlen(buffer+ptr); }else{ buffer[ptr++]=EXTRACT_PCHARP(from); } INC_PCHARP(from, 1); } buffer[ptr]=0; return buffer; }else{ return file; } } else { return "-"; } } #endif /* * return the file in which we were executing. * pc should be the program counter, prog the current * program, and line will be initialized to the line * in that file. */ PMOD_EXPORT struct pike_string *get_line(PIKE_OPCODE_T *pc, struct program *prog, INT32 *linep) { static char *file = NULL; static char *cnt; static INT32 off,line,pid; static size_t len; static INT32 shift; ptrdiff_t offset; linep[0] = 0; if (prog == 0) { struct pike_string *unknown_program; MAKE_CONSTANT_SHARED_STRING(unknown_program, "Unknown program"); return unknown_program; } if(prog == Pike_compiler->new_program) { struct pike_string *optimizer; MAKE_CONSTANT_SHARED_STRING(optimizer, "Optimizer"); return optimizer; } #ifdef PIKE_USE_MACHINE_CODE if( (long)pc > (long)prog->program) offset = pc - prog->program; else offset = (long) pc; #else offset = pc - prog->program; #endif if ((offset > (ptrdiff_t)prog->num_program) || (offset < 0)) { struct pike_string *not_found; MAKE_CONSTANT_SHARED_STRING(not_found, "Line not found"); return not_found; } if(prog->id != pid || offset < off) { cnt=prog->linenumbers; off=line=0; pid=prog->id; file = 0; }else{ goto fromold; } while(cnt < prog->linenumbers + prog->num_linenumbers) { if(*cnt == 127) { cnt++; len = get_small_number(&cnt); shift = *cnt; file = ++cnt; cnt += len<<shift; } off+=get_small_number(&cnt); if(off > offset) break; fromold: line+=get_small_number(&cnt); } linep[0]=line; if (!file) { struct pike_string *not_found; MAKE_CONSTANT_SHARED_STRING(not_found, "Line not found"); return not_found; } else { struct pike_string *res = begin_wide_shared_string(len, shift); memcpy(res->str, file, len<<shift); return end_shared_string(res); } } void my_yyerror(char *fmt,...) ATTRIBUTE((format(printf,1,2))) { va_list args; char buf[8192]; va_start(args,fmt); #ifdef HAVE_VSNPRINTF vsnprintf(buf, 8190, fmt, args); #else /* !HAVE_VSNPRINTF */ VSPRINTF(buf, fmt, args); #endif /* HAVE_VSNPRINTF */ if((size_t)strlen(buf) >= (size_t)sizeof(buf)) fatal("Buffer overflow in my_yyerror.\n"); yyerror(buf); va_end(args); } void yy_describe_exception(struct svalue *thrown) { /* FIXME: Doesn't handle wide string error messages. */ struct pike_string *s = 0; if ((thrown->type == T_ARRAY) && thrown->u.array->size && (thrown->u.array->item[0].type == T_STRING)) { /* Old-style backtrace */ s = thrown->u.array->item[0].u.string; } else if (thrown->type == T_OBJECT) { struct generic_error_struct *ge; if ((ge = (struct generic_error_struct *) get_storage(thrown->u.object, generic_error_program))) { s = ge->desc; } } if (s && !s->size_shift) { extern void f_string_trim_all_whites(INT32 args); ref_push_string(s); f_string_trim_all_whites(1); push_constant_text("\n"); push_constant_text(" "); f_replace(3); my_yyerror(sp[-1].u.string->str); pop_stack(); } } extern void yyparse(void); #ifdef PIKE_DEBUG #define do_yyparse() do { \ struct svalue *save_sp=Pike_sp; \ yyparse(); /* Parse da program */ \ if(save_sp != Pike_sp) \ fatal("yyparse() left %"PRINTPTRDIFFT"d droppings on the stack!\n", \ Pike_sp - save_sp); \ }while(0) #else #define do_yyparse() yyparse() #endif struct Supporter *current_supporter=0; int force_resolve = 0; #ifdef PIKE_DEBUG struct supporter_marker { struct supporter_marker *next; void *data; int level, verified; }; #undef EXIT_BLOCK #define EXIT_BLOCK(P) #undef COUNT_OTHER #define COUNT_OTHER() #undef INIT_BLOCK #define INIT_BLOCK(X) do { (X)->level = (X)->verified = 0; }while(0) PTR_HASH_ALLOC(supporter_marker, 128); static int supnum; #define SNUM(X) (get_supporter_marker((X))->level) static void mark_supporters(struct Supporter *s) { struct supporter_marker *m; if(!s) return; debug_malloc_touch(s); m=get_supporter_marker(s); if(m->level) return; m->level = -1; if(s->magic != 0x500b0127) { #ifdef DEBUG_MALLOC describe(s); #endif fatal("This is not a supporter (addr=%p, magic=%x)!\n",s,s->magic); } mark_supporters(s->dependants); mark_supporters(s->next_dependant); m->level=supnum++; mark_supporters(s->previous); mark_supporters(s->depends_on); } static void low_verify_supporters(struct Supporter *s) { struct Supporter *ss; struct supporter_marker *m; if(!s) return; debug_malloc_touch(s); m=get_supporter_marker(s); if(m->verified) return; m->verified = 1; low_verify_supporters(s->dependants); low_verify_supporters(s->next_dependant); #if 0 fprintf(stderr, "low_verify_supporters %p%s, level %d: " "previous %p, depends_on %p, dependants %p, next_dependant %p\n", s, s == current_supporter ? " == current_supporter" : "", m->level, s->previous, s->depends_on, s->dependants, s->next_dependant); #endif if(s->previous && SNUM(s->previous) <= m->level) fatal("Que, numbers out of whack1\n"); if(s->depends_on && SNUM(s->depends_on) <= m->level) fatal("Que, numbers out of whack2\n"); for(ss=s->dependants;ss;ss=ss->next_dependant) { if (ss->depends_on != s) fatal("Dependant hasn't got depends_on set properly.\n"); if(SNUM(ss) >= m->level) fatal("Que, numbers out of whack3\n"); } low_verify_supporters(s->previous); low_verify_supporters(s->depends_on); } void verify_supporters() { if(d_flag) { supnum=1; init_supporter_marker_hash(); #if 0 fprintf(stderr, "verify_supporters start\n"); #endif mark_supporters(current_supporter); low_verify_supporters(current_supporter); #ifdef DO_PIKE_CLEANUP { size_t e=0; struct supporter_marker *h; for(e=0;e<supporter_marker_hash_table_size;e++) while(supporter_marker_hash_table[e]) remove_supporter_marker(supporter_marker_hash_table[e]->data); } #endif exit_supporter_marker_hash(); #if 0 fprintf(stderr, "verify_supporters end\n"); #endif } } #else #define verify_supporters(); #endif void init_supporter(struct Supporter *s, supporter_callback *fun, void *data) { verify_supporters(); #ifdef PIKE_DEBUG s->magic = 0x500b0127; #endif s->previous=current_supporter; current_supporter=s; s->depends_on=0; s->dependants=0; s->next_dependant=0; s->fun=fun; s->data=data; s->prog=0; verify_supporters(); } int unlink_current_supporter(struct Supporter *c) { int ret=0; #ifdef PIKE_DEBUG if(c != current_supporter) fatal("Previous unlink failed.\n"); #endif debug_malloc_touch(c); verify_supporters(); if(c->depends_on) { #ifdef PIKE_DEBUG struct Supporter *s; for (s = c->depends_on->dependants; s; s = s->next_dependant) if (s == c) fatal("Dependant already linked in.\n"); #endif ret++; c->next_dependant = c->depends_on->dependants; c->depends_on->dependants=c; } current_supporter=c->previous; verify_supporters(); return ret; } void free_supporter(struct Supporter *c) { verify_supporters(); if (c->depends_on) { struct Supporter **s; for (s = &c->depends_on->dependants; *s; s = &(*s)->next_dependant) if (*s == c) {*s = c->next_dependant; break;} c->depends_on = 0; } verify_supporters(); } int call_dependants(struct Supporter *s, int finish) { int ok = 1; struct Supporter *tmp; verify_supporters(); while((tmp=s->dependants)) { s->dependants=tmp->next_dependant; #ifdef PIKE_DEBUG tmp->next_dependant=0; #endif verify_supporters(); if (!tmp->fun(tmp->data, finish)) ok = 0; verify_supporters(); } return ok; } int report_compiler_dependency(struct program *p) { int ret=0; struct Supporter *c,*cc; verify_supporters(); if (force_resolve) return 0; for(cc=current_supporter;cc;cc=cc->previous) { if(cc->prog && !(cc->prog->flags & PROGRAM_PASS_1_DONE)) { c=cc->depends_on; if(!c) c=cc->previous; for(;c;c=c->previous) { if(c->prog == p) { cc->depends_on=c; verify_supporters(); ret++; /* dependency registred */ } } } } verify_supporters(); return ret; } struct compilation { struct Supporter supporter; struct pike_string *prog; struct object *handler; int major, minor; struct program *target; struct object *placeholder; struct program *p; struct lex save_lex; int save_depth; int saved_threads_disabled; struct object *saved_handler; struct object *saved_compat_handler; dynamic_buffer used_modules_save; INT32 num_used_modules_save; struct mapping *resolve_cache_save; struct svalue default_module; }; static void free_compilation(struct compilation *c) { debug_malloc_touch(c); free_string(c->prog); if(c->handler) free_object(c->handler); if(c->target) free_program(c->target); if(c->placeholder) free_object(c->placeholder); free_svalue(& c->default_module); free_supporter(&c->supporter); free((char *)c); verify_supporters(); } static void run_init(struct compilation *c) { debug_malloc_touch(c); c->save_depth=compilation_depth; compilation_depth=-1; c->saved_handler = error_handler; if((error_handler = c->handler)) add_ref(error_handler); c->saved_compat_handler = compat_handler; compat_handler=0; c->used_modules_save = used_modules; c->num_used_modules_save = Pike_compiler->num_used_modules; Pike_compiler->num_used_modules=0; c->resolve_cache_save = resolve_cache; resolve_cache = 0; c->save_lex=lex; lex.current_line=1; lex.current_file=make_shared_string("-"); if (runtime_options & RUNTIME_STRICT_TYPES) { lex.pragmas = ID_STRICT_TYPES; } else { lex.pragmas = 0; } lex.end = c->prog->str + (c->prog->len << c->prog->size_shift); switch(c->prog->size_shift) { case 0: lex.current_lexer = yylex0; break; case 1: lex.current_lexer = yylex1; break; case 2: lex.current_lexer = yylex2; break; default: fatal("Program has bad shift %d!\n", c->prog->size_shift); break; } lex.pos=c->prog->str; } static void run_init2(struct compilation *c) { debug_malloc_touch(c); Pike_compiler->compiler = c; initialize_buf(&used_modules); use_module(& c->default_module); Pike_compiler->compat_major=PIKE_MAJOR_VERSION; Pike_compiler->compat_minor=PIKE_MINOR_VERSION; if(c->major>=0) change_compiler_compatibility(c->major, c->minor); } static void run_exit(struct compilation *c) { debug_malloc_touch(c); toss_buffer(&used_modules); used_modules = c->used_modules_save; #ifdef PIKE_DEBUG if(Pike_compiler->num_used_modules) fatal("Failed to pop modules properly.\n"); #endif Pike_compiler->num_used_modules = c->num_used_modules_save ; #ifdef PIKE_DEBUG if (compilation_depth != -1) { fprintf(stderr, "compile(): compilation_depth is %d\n", compilation_depth); } #endif /* PIKE_DEBUG */ compilation_depth=c->save_depth; #ifdef PIKE_DEBUG if (resolve_cache) free_mapping(resolve_cache); #endif resolve_cache = c->resolve_cache_save; if (error_handler) free_object(error_handler); error_handler = c->saved_handler; if (compat_handler) free_object(compat_handler); compat_handler = c->saved_compat_handler; free_string(lex.current_file); lex=c->save_lex; verify_supporters(); } static void zap_placeholder(struct compilation *c) { /* fprintf(stderr, "Destructing placeholder.\n"); */ if (c->placeholder->storage) { yyerror("Placeholder already has storage!"); #if 0 fprintf(stderr, "Placeholder already has storage!\n" "placeholder: %p, storage: %p, prog: %p\n", c->placeholder, c->placeholder->storage, c->placeholder->prog); #endif debug_malloc_touch(c->placeholder); destruct(c->placeholder); } else { /* FIXME: Is this correct? */ /* It would probably be nicer if it was possible to just call * destruct on the object, but this works too. -Hubbe */ free_program(c->placeholder->prog); c->placeholder->prog = NULL; debug_malloc_touch(c->placeholder); } free_object(c->placeholder); c->placeholder=0; verify_supporters(); } static int run_pass1(struct compilation *c) { int ret=0; debug_malloc_touch(c); run_init(c); #if 0 CDFPRINTF((stderr, "th(%ld) compile() starting compilation_depth=%d\n", (long)th_self(),compilation_depth)); #endif if(c->placeholder && c->placeholder->prog != null_program) Pike_error("Placeholder object is not a null_program clone!\n"); debug_malloc_touch(c->placeholder); if(c->target && !(c->target->flags & PROGRAM_VIRGIN)) Pike_error("Placeholder program is not virgin!\n"); low_start_new_program(c->target,0,0,0); c->supporter.prog = Pike_compiler->new_program; CDFPRINTF((stderr, "th(%ld) %p run_pass1() start: " "threads_disabled:%d, compilation_depth:%d\n", (long)th_self(), Pike_compiler->new_program, threads_disabled, compilation_depth)); Pike_compiler->compiler_pass=1; run_init2(c); if(c->placeholder) { if(c->placeholder->prog != null_program) { yyerror("Placeholder argument is not a null_program clone!"); c->placeholder=0; debug_malloc_touch(c->placeholder); }else{ free_program(c->placeholder->prog); add_ref(c->placeholder->prog=Pike_compiler->new_program); debug_malloc_touch(c->placeholder); } } #if 0 CDFPRINTF((stderr, "th(%ld) compile(): First pass\n", (long)th_self())); #endif do_yyparse(); /* Parse da program */ if (!Pike_compiler->new_program->num_linenumbers) { /* The lexer didn't write an initial entry. */ store_linenumber(0, lex.current_file); #ifdef DEBUG_MALLOC if(strcmp(lex.current_file->str,"-")) debug_malloc_name(Pike_compiler->new_program, lex.current_file->str, 0); #endif } CDFPRINTF((stderr, "th(%ld) %p run_pass1() done for %s\n", (long)th_self(), Pike_compiler->new_program, lex.current_file->str)); ret=unlink_current_supporter(& c->supporter); c->p=end_first_pass(0); run_exit(c); if(c->placeholder) { if(!c->p || (c->placeholder->storage)) { debug_malloc_touch(c->placeholder); zap_placeholder(c); } else { #ifdef PIKE_DEBUG if (c->placeholder->prog != c->p) fatal("Placeholder object got wrong program after first pass.\n"); #endif debug_malloc_touch(c->placeholder); c->placeholder->storage=c->p->storage_needed ? (char *)xalloc(c->p->storage_needed) : (char *)0; call_c_initializers(c->placeholder); } } verify_supporters(); return ret; } void run_pass2(struct compilation *c) { debug_malloc_touch(c); debug_malloc_touch(c->placeholder); run_init(c); low_start_new_program(c->p,0,0,0); free_program(c->p); c->p=0; Pike_compiler->compiler_pass=2; run_init2(c); CDFPRINTF((stderr, "th(%ld) %p run_pass2() start: " "threads_disabled:%d, compilation_depth:%d\n", (long)th_self(), Pike_compiler->new_program, threads_disabled, compilation_depth)); verify_supporters(); do_yyparse(); /* Parse da program */ CDFPRINTF((stderr, "th(%ld) %p run_pass2() done for %s\n", (long)th_self(), Pike_compiler->new_program, lex.current_file->str)); verify_supporters(); c->p=end_program(); run_exit(c); } static void run_cleanup(struct compilation *c, int delayed) { debug_malloc_touch(c); debug_malloc_touch(c->placeholder); #if 0 /* FIXME */ if (threads_disabled != c->saved_threads_disabled) { fatal("compile(): threads_disabled:%d saved_threads_disabled:%d\n", threads_disabled, c->saved_threads_disabled); } #endif /* PIKE_DEBUG */ exit_threads_disable(NULL);

pike.git/ src/ program.c > 3e9a46d616d06be04f95969ad0452dbec80587e5 [Annotate]