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/*\ 
||| This file a part of Pike, and is copyright by Fredrik Hubinette 
||| Pike is distributed as GPL (General Public License) 
||| See the files COPYING and DISCLAIMER for more information. 
\*/ 
 
/* 
 * $Id: program.h,v 1.53 1999/03/17 21:51:59 hubbe Exp $ 
 */ 
#ifndef PROGRAM_H 
#define PROGRAM_H 
 
#include <stdarg.h> 
#include "global.h" 
#include "pike_types.h" 
#include "pike_macros.h" 
#include "svalue.h" 
#include "time_stuff.h" 
 
#ifdef PIKE_DEBUG 
#define PROGRAM_LINE_ARGS int line, char *file 
#else 
#define PROGRAM_LINE_ARGS void 
#endif 
 
#define LFUN___INIT 0 
#define LFUN_CREATE 1 
#define LFUN_DESTROY 2 
#define LFUN_ADD 3 
#define LFUN_SUBTRACT 4 
#define LFUN_AND 5 
#define LFUN_OR 6 
#define LFUN_XOR 7 
#define LFUN_LSH 8 
#define LFUN_RSH 9 
#define LFUN_MULTIPLY 10 
#define LFUN_DIVIDE 11 
#define LFUN_MOD 12 
#define LFUN_COMPL 13 
#define LFUN_EQ 14 
#define LFUN_LT 15 
#define LFUN_GT 16 
#define LFUN___HASH 17 
#define LFUN_CAST 18 
#define LFUN_NOT 19 
#define LFUN_INDEX 20 
#define LFUN_ASSIGN_INDEX 21 
#define LFUN_ARROW 22 
#define LFUN_ASSIGN_ARROW 23 
#define LFUN__SIZEOF 24 
#define LFUN__INDICES 25 
#define LFUN__VALUES 26 
#define LFUN_CALL 27 
#define LFUN_RADD 28 
#define LFUN_RSUBTRACT 29 
#define LFUN_RAND 30 
#define LFUN_ROR 31 
#define LFUN_RXOR 32 
#define LFUN_RLSH 33 
#define LFUN_RRSH 34 
#define LFUN_RMULTIPLY 35 
#define LFUN_RDIVIDE 36 
#define LFUN_RMOD 37 
#define LFUN_ADD_EQ 38 
 
#define NUM_LFUNS 39 
 
extern char *lfun_names[]; 
 
#ifndef STRUCT_SVALUE_DECLARED 
#define STRUCT_SVALUE_DECLARED 
struct svalue; 
#endif 
 
#ifndef STRUCT_NODE_S_DECLARED 
#define STRUCT_NODE_S_DECLARED 
struct node_s; 
#endif 
 
#ifndef STRUCT_OBJECT_DECLARED 
#define STRUCT_OBJECT_DECLARED 
struct object; 
#endif 
 
struct program_state; 
 
/* I need: 
 * a) one type that can point to a callable function. 
 *    (C function, or object->fun) 
 * This can for instance be an svalue. 
 * 
 * b) one type that once the object/program is known can point 
 *    to the C/PIKE function body. 
 * 
 * c) A number of flags to send to 'add_simul_efun' to specify side effects 
 *    and such. 
 */ 
 
 
/* 
 * Max program dimensions: 
 * 2^16 functions + global variables 
 * 2^16 inherits 
 * 2^16 arguments to pike functions 
 * 2^32 efuns 
 * 2^8 local variables (and arguments) 
 */ 
 
union idptr 
{ 
  void (*c_fun)(INT32); 
  INT32 offset; 
}; 
 
#define IDENTIFIER_PIKE_FUNCTION 1 
#define IDENTIFIER_C_FUNCTION 2 
#define IDENTIFIER_FUNCTION 3 
#define IDENTIFIER_CONSTANT 4 
#define IDENTIFIER_VARARGS 8 
#define IDENTIFIER_PROTOTYPED 16 
 
#define IDENTIFIER_IS_FUNCTION(X) ((X) & IDENTIFIER_FUNCTION) 
#define IDENTIFIER_IS_CONSTANT(X) ((X) & IDENTIFIER_CONSTANT) 
#define IDENTIFIER_IS_VARIABLE(X) (!((X) & (IDENTIFIER_FUNCTION | IDENTIFIER_CONSTANT))) 
 
struct identifier 
{ 
  struct pike_string *name; 
  struct pike_string *type; 
  unsigned INT16 identifier_flags; /* IDENTIFIER_??? */ 
  unsigned INT16 run_time_type; 
#ifdef PROFILING 
  unsigned INT32 num_calls; 
  unsigned INT32 total_time; 
  unsigned INT32 self_time; 
#endif /* PROFILING */ 
  union idptr func; 
}; 
 
/* 
 * in the bytecode, a function starts with: 
 * char num_args 
 * char num_locals 
 * char code[] 
 */ 
 
#define ID_STATIC    0x01 
#define ID_PRIVATE   0x02 
#define ID_NOMASK    0x04 
#define ID_PUBLIC    0x08 
#define ID_PROTECTED 0x10 
#define ID_INLINE    0x20 
#define ID_HIDDEN    0x40 /* needed? */ 
#define ID_INHERITED 0x80 
 
struct reference 
{ 
  unsigned INT16 inherit_offset; 
  unsigned INT16 identifier_offset; 
  INT16 id_flags; /* static, private etc.. */ 
}; 
 
 
struct inherit 
{ 
  INT16 inherit_level; /* really needed? */ 
  INT16 identifier_level; 
  INT16 parent_identifier; 
  INT16 parent_offset; 
  INT32 storage_offset; 
  struct object *parent; 
  struct program *prog; 
  struct pike_string *name; 
}; 
 
/* program parts have been realloced into one block */ 
#define PROGRAM_OPTIMIZED 1 
 
/* program has gone through pass 1 of compiler, prototypes etc. will 
 * not change from now on 
 */ 
#define PROGRAM_FIXED 2 
 
/* Program is done and can be cloned */ 
#define PROGRAM_FINISHED 4 
 
/* Program has gone through first compiler pass */ 
#define PROGRAM_PASS_1_DONE 8 
 
/* Program will be destructed as soon at it runs out of references. */ 
#define PROGRAM_DESTRUCT_IMMEDIATE 16 
 
#define PROGRAM_HAS_C_METHODS 32 
 
struct program 
{ 
  INT32 refs; 
#ifdef PIKE_SECURITY 
  struct object *prot; 
#endif 
  INT32 id;             /* used to identify program in caches */ 
  INT32 flags; 
  INT32 storage_needed; /* storage needed in the object struct */ 
  unsigned INT8 alignment_needed; 
  struct timeval timestamp; 
 
  struct program *next; 
  struct program *prev; 
 
  void (*init)(struct object *); 
  void (*exit)(struct object *); 
  void (*gc_marked)(struct object *); 
  void (*gc_check)(struct object *); 
#ifdef PIKE_DEBUG 
  unsigned INT32 checksum; 
#endif 
#ifdef PROFILING 
  unsigned INT32 num_clones; 
#endif /* PROFILING */ 
 
  SIZE_T total_size; 
 
#define FOO(NUMTYPE,TYPE,NAME) TYPE * NAME ; 
#include "program_areas.h" 
 
#define FOO(NUMTYPE,TYPE,NAME) NUMTYPE PIKE_CONCAT(num_,NAME) ; 
#include "program_areas.h" 
   
  INT16 lfuns[NUM_LFUNS]; 
}; 
 
#define INHERIT_FROM_PTR(P,X) ((debug_malloc_pass(P))->inherits + (debug_malloc_pass(X))->inherit_offset) 
#define PROG_FROM_PTR(P,X) (debug_malloc_pass(INHERIT_FROM_PTR(P,X)->prog)) 
#define ID_FROM_PTR(P,X) (PROG_FROM_PTR(P,X)->identifiers+(X)->identifier_offset) 
#define INHERIT_FROM_INT(P,X) INHERIT_FROM_PTR(P,(P)->identifier_references+(X)) 
#define PROG_FROM_INT(P,X) PROG_FROM_PTR(P,(P)->identifier_references+(X)) 
#define ID_FROM_INT(P,X) ID_FROM_PTR(P,(P)->identifier_references+(X)) 
 
#define FIND_LFUN(P,N) ((debug_malloc_pass(P))->flags & PROGRAM_FIXED?(debug_malloc_pass((P)->lfuns[(N)])):find_identifier(lfun_names[(N)],(P))) 
 
#define free_program(p) do{ struct program *_=(p); debug_malloc_touch(_); if(!--_->refs) really_free_program(_); }while(0) 
 
 
struct pike_trampoline 
{ 
  struct pike_frame *frame; 
  INT32 func; 
}; 
 
 
extern struct object *fake_object; 
extern struct program *new_program; 
extern struct program *first_program; 
extern int compiler_pass; 
extern long local_class_counter; 
extern int catch_level; 
extern INT32 num_used_modules; 
extern struct program *pike_trampoline_program; 
 
#define COMPILER_IN_CATCH 1 
 
#define ADD_STORAGE(X) low_add_storage(sizeof(X), ALIGNOF(X),0) 
 
#define FOO(NUMTYPE,TYPE,NAME) void PIKE_CONCAT(add_to_,NAME(TYPE ARG)); 
#include "program_areas.h" 
 
/* Prototypes begin here */ 
void ins_int(INT32 i, void (*func)(char tmp)); 
void ins_short(INT16 i, void (*func)(char tmp)); 
void use_module(struct svalue *s); 
void unuse_modules(INT32 howmany); 
struct node_s *find_module_identifier(struct pike_string *ident); 
struct program *parent_compilation(int level); 
struct program *id_to_program(INT32 id); 
void optimize_program(struct program *p); 
int program_function_index_compare(const void *a,const void *b); 
void fixate_program(void); 
struct program *low_allocate_program(void); 
void low_start_new_program(struct program *p, 
                           struct pike_string *name, 
                           int flags); 
void debug_start_new_program(PROGRAM_LINE_ARGS); 
void really_free_program(struct program *p); 
void dump_program_desc(struct program *p); 
int sizeof_variable(int run_time_type); 
void check_program(struct program *p); 
struct program *end_first_pass(int finish); 
struct program *debug_end_program(void); 
SIZE_T low_add_storage(SIZE_T size, SIZE_T alignment, int modulo); 
void set_init_callback(void (*init)(struct object *)); 
void set_exit_callback(void (*exit)(struct object *)); 
void set_gc_mark_callback(void (*m)(struct object *)); 
void set_gc_check_callback(void (*m)(struct object *)); 
int low_reference_inherited_identifier(struct program_state *q, 
                                       int e, 
                                       struct pike_string *name); 
node *reference_inherited_identifier(struct pike_string *super_name, 
                                   struct pike_string *function_name); 
void rename_last_inherit(struct pike_string *n); 
void low_inherit(struct program *p, 
                 struct object *parent, 
                 int parent_identifier, 
                 int parent_offset, 
                 INT32 flags, 
                 struct pike_string *name); 
void do_inherit(struct svalue *s, 
                INT32 flags, 
                struct pike_string *name); 
void compiler_do_inherit(node *n, 
                         INT32 flags, 
                         struct pike_string *name); 
void simple_do_inherit(struct pike_string *s, 
                       INT32 flags, 
                       struct pike_string *name); 
int isidentifier(struct pike_string *s); 
int low_define_variable(struct pike_string *name, 
                        struct pike_string *type, 
                        INT32 flags, 
                        INT32 offset, 
                        INT32 run_time_type); 
int map_variable(char *name, 
                 char *type, 
                 INT32 flags, 
                 INT32 offset, 
                 INT32 run_time_type); 
int define_variable(struct pike_string *name, 
                    struct pike_string *type, 
                    INT32 flags); 
int simple_add_variable(char *name, 
                        char *type, 
                        INT32 flags); 
int add_constant(struct pike_string *name, 
                 struct svalue *c, 
                 INT32 flags); 
int simple_add_constant(char *name,  
                        struct svalue *c, 
                        INT32 flags); 
int add_integer_constant(char *name, 
                         INT32 i, 
                         INT32 flags); 
int quick_add_integer_constant(char *name, 
                               int name_length, 
                               INT32 i, 
                               INT32 flags); 
int add_float_constant(char *name, 
                         double f, 
                         INT32 flags); 
int add_string_constant(char *name, 
                        char *str, 
                        INT32 flags); 
int add_program_constant(char *name, 
                         struct program *p, 
                         INT32 flags); 
int add_object_constant(char *name, 
                        struct object *o, 
                        INT32 flags); 
int add_function_constant(char *name, void (*cfun)(INT32), char * type, INT16 flags); 
int debug_end_class(char *name, int namelen, INT32 flags); 
INT32 define_function(struct pike_string *name, 
                      struct pike_string *type, 
                      INT16 flags, 
                      INT8 function_flags, 
                      union idptr *func); 
int really_low_find_shared_string_identifier(struct pike_string *name, 
                                             struct program *prog, 
                                             int see_static); 
int low_find_shared_string_identifier(struct pike_string *name, 
                                      struct program *prog); 
struct ff_hash; 
int find_shared_string_identifier(struct pike_string *name, 
                                  struct program *prog); 
int find_identifier(char *name,struct program *prog); 
int store_prog_string(struct pike_string *str); 
int store_constant(struct svalue *foo, int equal); 
struct array *program_indices(struct program *p); 
struct array *program_values(struct program *p); 
void program_index_no_free(struct svalue *to, struct program *p, 
                           struct svalue *ind); 
void start_line_numbering(void); 
void store_linenumber(INT32 current_line, struct pike_string *current_file); 
char *get_line(unsigned char *pc,struct program *prog,INT32 *linep); 
void my_yyerror(char *fmt,...)  ATTRIBUTE((format(printf,1,2))); 
struct program *compile(struct pike_string *prog); 
int add_function(char *name,void (*cfun)(INT32),char *type,INT16 flags); 
int quick_add_function(char *name, 
                       int name_length, 
                       void (*cfun)(INT32), 
                       char *type, 
                       int type_length, 
                       INT16 flags, 
                       int opt_flags); 
void check_all_programs(void); 
void init_program(void); 
void cleanup_program(void); 
void gc_mark_program_as_referenced(struct program *p); 
void gc_check_all_programs(void); 
void gc_mark_all_programs(void); 
void gc_free_all_unreferenced_programs(void); 
void count_memory_in_programs(INT32 *num_, INT32 *size_); 
void push_compiler_frame(int lexical_scope); 
void pop_local_variables(int level); 
void pop_compiler_frame(void); 
int low_get_storage(struct program *o, struct program *p); 
char *get_storage(struct object *o, struct program *p); 
struct program *low_program_from_function(struct program *p, 
                                          INT32 i); 
struct program *program_from_function(struct svalue *f); 
struct program *program_from_svalue(struct svalue *s); 
struct find_child_cache_s; 
int find_child(struct program *parent, struct program *child); 
void yywarning(char *fmt, ...) ATTRIBUTE((format(printf,1,2))); 
struct implements_cache_s; 
int implements(struct program *a, struct program *b); 
/* Prototypes end here */ 
 
#define ADD_FUNCTION(NAME,FUNC,TYPE,FLAGS) \ 
  quick_add_function(NAME,CONSTANT_STRLEN(NAME),FUNC,TYPE,CONSTANT_STRLEN(TYPE),FLAGS,0) 
 
#define ADD_INT_CONSTANT(NAME,CONST,FLAGS) \ 
  quick_add_integer_constant(NAME,CONSTANT_STRLEN(NAME),CONST,FLAGS) 
 
#endif 
 
#ifdef DEBUG_MALLOC 
#define end_program() ((struct program *)debug_malloc_pass(debug_end_program())) 
#define end_class(NAME, FLAGS) do { debug_malloc_touch(new_program); debug_end_class(NAME, CONSTANT_STRLEN(NAME), FLAGS); }while(0) 
#else 
#define end_class(NAME,FLAGS) debug_end_class(NAME, CONSTANT_STRLEN(NAME), FLAGS) 
#define end_program debug_end_program 
#endif 
 
 
#ifdef PIKE_DEBUG 
#define start_new_program() debug_start_new_program(__LINE__,__FILE__) 
#else 
#define start_new_program() debug_start_new_program() 
#endif