#ifndef DAVIS_SLANG_H_ #define DAVIS_SLANG_H_ /* -*- mode: C; mode: fold; -*- */ /* Copyright (c) 1992, 1999, 2001, 2002, 2003 John E. Davis * This file is part of the S-Lang library. * * You may distribute under the terms of either the GNU General Public * License or the Perl Artistic License. */ #define SLANG_VERSION 10409 #define SLANG_VERSION_STRING "1.4.9" /*{{{ System Dependent Macros and Typedefs */ #if defined(__WATCOMC__) && defined(DOS) # ifndef __MSDOS__ # define __MSDOS__ # endif # ifndef DOS386 # define DOS386 # endif # ifndef IBMPC_SYSTEM # define IBMPC_SYSTEM # endif #endif /* __watcomc__ */ #if defined(unix) || defined(__unix) || defined (_AIX) || defined(__NetBSD__) || defined(__MACH__) # ifndef __unix__ # define __unix__ 1 # endif #endif #if !defined(__GO32__) # ifdef __unix__ # define REAL_UNIX_SYSTEM # endif #endif /* Set of the various defines for pc systems. This includes OS/2 */ #ifdef __GO32__ # ifndef __DJGPP__ # define __DJGPP__ 1 # endif # ifndef IBMPC_SYSTEM # define IBMPC_SYSTEM # endif #endif #ifdef __BORLANDC__ # ifndef IBMPC_SYSTEM # define IBMPC_SYSTEM # endif #endif #ifdef __MSDOS__ # ifndef IBMPC_SYSTEM # define IBMPC_SYSTEM # endif #endif #if defined(OS2) || defined(__os2__) # ifndef IBMPC_SYSTEM # define IBMPC_SYSTEM # endif # ifndef __os2__ # define __os2__ # endif #endif #if defined(__NT__) || defined(__MINGW32__) /* || defined(__CYGWIN32__) */ # ifndef IBMPC_SYSTEM # define IBMPC_SYSTEM # endif #endif #if defined(IBMPC_SYSTEM) || defined(VMS) # ifdef REAL_UNIX_SYSTEM # undef REAL_UNIX_SYSTEM # endif #endif #ifdef __cplusplus extern "C" { #endif #if 0 } #endif #include #include #if defined(__STDC__) || defined(__BORLANDC__) || defined(__cplusplus) # include /* for offsetof */ #endif /* ---------------------------- Generic Macros ----------------------------- */ /* __SC__ is defined for Symantec C++ DOS386 is defined for -mx memory model, 32 bit DOS extender. */ #if defined(__SC__) && !defined(DOS386) # include #endif #if defined(__BORLANDC__) # include #endif #ifdef __GNUC__ # define _SLATTRIBUTE_(x) __attribute__ (x) #else # define _SLATTRIBUTE_(x) #endif #define _SLATTRIBUTE_PRINTF(a,b) _SLATTRIBUTE_((format(printf,a,b))) #if defined (__cplusplus) || defined(__STDC__) || defined(IBMPC_SYSTEM) typedef void *VOID_STAR; #define SLCONST const #else typedef unsigned char *VOID_STAR; #define SLCONST #endif typedef int (*FVOID_STAR)(void); #if defined(__MSDOS__) && defined(__BORLANDC__) # define SLFREE(buf) farfree((void far *)(buf)) # define SLMALLOC(x) farmalloc((unsigned long) (x)) # define SLREALLOC(buf, n) farrealloc((void far *) (buf), (unsigned long) (n)) # define SLCALLOC(n, m) farcalloc((unsigned long) (n), (unsigned long) (m)) #else # if defined(VMS) && !defined(__DECC) # define SLFREE VAXC$FREE_OPT # define SLMALLOC VAXC$MALLOC_OPT # define SLREALLOC VAXC$REALLOC_OPT # define SLCALLOC VAXC$CALLOC_OPT # else # define SLFREE(x) free((char *)(x)) # define SLMALLOC malloc # define SLREALLOC realloc # define SLCALLOC calloc # endif #endif extern char *SLdebug_malloc (unsigned long); extern char *SLdebug_calloc (unsigned long, unsigned long); extern char *SLdebug_realloc (char *, unsigned long); extern void SLdebug_free (char *); extern void SLmalloc_dump_statistics (void); extern char *SLstrcpy(register char *, register char *); extern int SLstrcmp(register char *, register char *); extern char *SLstrncpy(char *, register char *, register int); extern void SLmemset (char *, char, int); extern char *SLmemchr (register char *, register char, register int); extern char *SLmemcpy (char *, char *, int); extern int SLmemcmp (char *, char *, int); /*}}}*/ /*{{{ Interpreter Typedefs */ typedef unsigned char SLtype; /* This will be unsigned int in V2 */ typedef struct _SLang_Name_Type { char *name; struct _SLang_Name_Type *next; char name_type; /* These values must be less than 0x10 because they map directly * to byte codes. See _slang.h. */ #define SLANG_LVARIABLE 0x01 #define SLANG_GVARIABLE 0x02 #define SLANG_IVARIABLE 0x03 /* intrinsic variables */ /* Note!!! For Macro MAKE_VARIABLE below to work, SLANG_IVARIABLE Must be 1 less than SLANG_RVARIABLE!!! */ #define SLANG_RVARIABLE 0x04 /* read only variable */ #define SLANG_INTRINSIC 0x05 #define SLANG_FUNCTION 0x06 #define SLANG_MATH_UNARY 0x07 #define SLANG_APP_UNARY 0x08 #define SLANG_ICONSTANT 0x09 #define SLANG_DCONSTANT 0x0A #define SLANG_PVARIABLE 0x0B /* private */ #define SLANG_PFUNCTION 0x0C /* private */ /* Rest of fields depend on name type */ } SLang_Name_Type; typedef struct { char *name; struct _SLang_Name_Type *next; /* this is for the hash table */ char name_type; FVOID_STAR i_fun; /* address of object */ /* Do not change this without modifying slang.c:execute_intrinsic_fun */ #define SLANG_MAX_INTRIN_ARGS 7 SLtype arg_types [SLANG_MAX_INTRIN_ARGS]; unsigned char num_args; SLtype return_type; } SLang_Intrin_Fun_Type; typedef struct { char *name; SLang_Name_Type *next; char name_type; VOID_STAR addr; SLtype type; } SLang_Intrin_Var_Type; typedef struct { char *name; SLang_Name_Type *next; char name_type; int unary_op; } SLang_App_Unary_Type; typedef struct { char *name; SLang_Name_Type *next; char name_type; int unary_op; } SLang_Math_Unary_Type; typedef struct { char *name; SLang_Name_Type *next; char name_type; int i; } SLang_IConstant_Type; typedef struct { char *name; SLang_Name_Type *next; char name_type; double d; } SLang_DConstant_Type; typedef struct { char *field_name; /* gets replaced by slstring at run-time */ unsigned int offset; SLtype type; unsigned char read_only; } SLang_IStruct_Field_Type; typedef SLCONST struct { char *field_name; unsigned int offset; SLtype type; unsigned char read_only; } SLang_CStruct_Field_Type; extern int SLadd_intrin_fun_table (SLang_Intrin_Fun_Type *, char *); extern int SLadd_intrin_var_table (SLang_Intrin_Var_Type *, char *); extern int SLadd_app_unary_table (SLang_App_Unary_Type *, char *); extern int SLadd_math_unary_table (SLang_Math_Unary_Type *, char *); extern int SLadd_iconstant_table (SLang_IConstant_Type *, char *); extern int SLadd_dconstant_table (SLang_DConstant_Type *, char *); extern int SLadd_istruct_table (SLang_IStruct_Field_Type *, VOID_STAR, char *); typedef struct _SLang_NameSpace_Type SLang_NameSpace_Type; extern int SLns_add_intrin_fun_table (SLang_NameSpace_Type *, SLang_Intrin_Fun_Type *, char *); extern int SLns_add_intrin_var_table (SLang_NameSpace_Type *, SLang_Intrin_Var_Type *, char *); extern int SLns_add_app_unary_table (SLang_NameSpace_Type *, SLang_App_Unary_Type *, char *); extern int SLns_add_math_unary_table (SLang_NameSpace_Type *, SLang_Math_Unary_Type *, char *); extern int SLns_add_iconstant_table (SLang_NameSpace_Type *, SLang_IConstant_Type *, char *); extern int SLns_add_dconstant_table (SLang_NameSpace_Type *, SLang_DConstant_Type *, char *); extern int SLns_add_istruct_table (SLang_NameSpace_Type *, SLang_IStruct_Field_Type *, VOID_STAR, char *); extern SLang_NameSpace_Type *SLns_create_namespace (char *); extern void SLns_delete_namespace (SLang_NameSpace_Type *); extern int SLns_load_file (char *, char *); extern int SLns_load_string (char *, char *); extern int (*SLns_Load_File_Hook) (char *, char *); int SLang_load_file_verbose (int); /* if non-zero, display file loading messages */ typedef struct SLang_Load_Type { int type; VOID_STAR client_data; /* Pointer to data that client needs for loading */ int auto_declare_globals; /* if non-zero, undefined global variables are declared as static */ char *(*read)(struct SLang_Load_Type *); /* function to call to read next line from obj. */ unsigned int line_num; /* Number of lines read, used for error reporting */ int parse_level; /* 0 if at top level of parsing */ char *name; /* Name of this object, e.g., filename. This name should be unique because * it alone determines the name space for static objects associated with * the compilable unit. */ char *namespace_name; unsigned long reserved[3]; /* For future expansion */ } SLang_Load_Type; extern SLang_Load_Type *SLallocate_load_type (char *); extern void SLdeallocate_load_type (SLang_Load_Type *); extern SLang_Load_Type *SLns_allocate_load_type (char *, char *); /* Returns SLang_Error upon failure */ extern int SLang_load_object (SLang_Load_Type *); extern int (*SLang_Load_File_Hook)(char *); extern int (*SLang_Auto_Declare_Var_Hook) (char *); extern int SLang_generate_debug_info (int); #if defined(ultrix) && !defined(__GNUC__) # ifndef NO_PROTOTYPES # define NO_PROTOTYPES # endif #endif #ifndef NO_PROTOTYPES # define _PROTO(x) x #else # define _PROTO(x) () #endif typedef struct SL_OOBinary_Type { SLtype data_type; /* partner type for binary op */ int (*binary_function)_PROTO((int, SLtype, VOID_STAR, unsigned int, SLtype, VOID_STAR, unsigned int, VOID_STAR)); int (*binary_result) _PROTO((int, SLtype, SLtype, SLtype *)); struct SL_OOBinary_Type *next; } SL_OOBinary_Type; typedef struct _SL_Typecast_Type { SLtype data_type; /* to_type */ int allow_implicit; int (*typecast)_PROTO((SLtype, VOID_STAR, unsigned int, SLtype, VOID_STAR)); struct _SL_Typecast_Type *next; } SL_Typecast_Type; typedef struct _SLang_Struct_Type SLang_Struct_Type; typedef struct _SLang_Foreach_Context_Type SLang_Foreach_Context_Type; #if 0 #if defined(SL_APP_WANTS_FOREACH) typedef struct _SLang_Foreach_Context_Type SLang_Foreach_Context_Type; /* It is up to the application to define struct _SLang_Foreach_Context_Type */ #else typedef int SLang_Foreach_Context_Type; #endif #endif typedef struct { unsigned char cl_class_type; #define SLANG_CLASS_TYPE_MMT 0 #define SLANG_CLASS_TYPE_SCALAR 1 #define SLANG_CLASS_TYPE_VECTOR 2 #define SLANG_CLASS_TYPE_PTR 3 unsigned int cl_data_type; /* SLANG_INTEGER_TYPE, etc... */ char *cl_name; /* slstring type */ unsigned int cl_sizeof_type; VOID_STAR cl_transfer_buf; /* cl_sizeof_type bytes*/ /* Methods */ /* Most of the method functions are prototyped: * int method (SLtype type, VOID_STAR addr); * Here, @type@ represents the type of object that the method is asked * to deal with. The second parameter @addr@ will contain the ADDRESS of * the object. For example, if type is SLANG_INT_TYPE, then @addr@ will * actually be int *. Similary, if type is SLANG_STRING_TYPE, * then @addr@ will contain the address of the string, i.e., char **. */ void (*cl_destroy)_PROTO((SLtype, VOID_STAR)); /* Prototype: void destroy(unsigned type, VOID_STAR val) * Called to delete/free the object */ char *(*cl_string)_PROTO((SLtype, VOID_STAR)); /* Prototype: char *to_string (SLtype t, VOID_STAR p); * Here p is a pointer to the object for which a string representation * is to be returned. The returned pointer is to be a MALLOCED string. */ /* Prototype: void push(SLtype type, VOID_STAR v); * Push a copy of the object of type @type@ at address @v@ onto the * stack. */ int (*cl_push)_PROTO((SLtype, VOID_STAR)); /* Prototype: int pop(SLtype type, VOID_STAR v); * Pops value from stack and assign it to object, whose address is @v@. */ int (*cl_pop)_PROTO((SLtype, VOID_STAR)); int (*cl_unary_op_result_type)_PROTO((int, SLtype, SLtype *)); int (*cl_unary_op)_PROTO((int, SLtype, VOID_STAR, unsigned int, VOID_STAR)); int (*cl_app_unary_op_result_type)_PROTO((int, SLtype, SLtype *)); int (*cl_app_unary_op)_PROTO((int, SLtype, VOID_STAR, unsigned int, VOID_STAR)); /* If this function is non-NULL, it will be called for sin, cos, etc... */ #define SLMATH_SIN 1 #define SLMATH_COS 2 #define SLMATH_TAN 3 #define SLMATH_ATAN 4 #define SLMATH_ASIN 5 #define SLMATH_ACOS 6 #define SLMATH_EXP 7 #define SLMATH_LOG 8 #define SLMATH_SQRT 9 #define SLMATH_LOG10 10 #define SLMATH_REAL 11 #define SLMATH_IMAG 12 #define SLMATH_SINH 13 #define SLMATH_COSH 14 #define SLMATH_TANH 15 #define SLMATH_ATANH 16 #define SLMATH_ASINH 17 #define SLMATH_ACOSH 18 #define SLMATH_TODOUBLE 19 #define SLMATH_CONJ 20 int (*cl_math_op)_PROTO((int, SLtype, VOID_STAR, unsigned int, VOID_STAR)); int (*cl_math_op_result_type)_PROTO((int, SLtype, SLtype *)); SL_OOBinary_Type *cl_binary_ops; SL_Typecast_Type *cl_typecast_funs; void (*cl_byte_code_destroy)_PROTO((SLtype, VOID_STAR)); void (*cl_user_destroy_fun)_PROTO((SLtype, VOID_STAR)); int (*cl_init_array_object)_PROTO((SLtype, VOID_STAR)); int (*cl_datatype_deref)_PROTO((SLtype)); SLang_Struct_Type *cl_struct_def; int (*cl_dereference) _PROTO((SLtype, VOID_STAR)); int (*cl_acopy) (SLtype, VOID_STAR, VOID_STAR); int (*cl_apop) _PROTO((SLtype, VOID_STAR)); int (*cl_apush) _PROTO((SLtype, VOID_STAR)); int (*cl_push_literal) _PROTO((SLtype, VOID_STAR)); void (*cl_adestroy)_PROTO((SLtype, VOID_STAR)); int (*cl_push_intrinsic)_PROTO((SLtype, VOID_STAR)); int (*cl_void_typecast)_PROTO((SLtype, VOID_STAR, unsigned int, SLtype, VOID_STAR)); int (*cl_anytype_typecast)_PROTO((SLtype, VOID_STAR, unsigned int, SLtype, VOID_STAR)); /* Array access functions */ int (*cl_aput) (SLtype, unsigned int); int (*cl_aget) (SLtype, unsigned int); int (*cl_anew) (SLtype, unsigned int); /* length method */ int (*cl_length) (SLtype, VOID_STAR, unsigned int *); /* foreach */ SLang_Foreach_Context_Type *(*cl_foreach_open) (SLtype, unsigned int); void (*cl_foreach_close) (SLtype, SLang_Foreach_Context_Type *); int (*cl_foreach) (SLtype, SLang_Foreach_Context_Type *); /* Structure access: get and put (assign to) fields */ int (*cl_sput) (SLtype, char *); int (*cl_sget) (SLtype, char *); /* File I/O */ int (*cl_fread) (SLtype, FILE *, VOID_STAR, unsigned int, unsigned int *); int (*cl_fwrite) (SLtype, FILE *, VOID_STAR, unsigned int, unsigned int *); int (*cl_fdread) (SLtype, int, VOID_STAR, unsigned int, unsigned int *); int (*cl_fdwrite) (SLtype, int, VOID_STAR, unsigned int, unsigned int *); int (*cl_to_bool) (SLtype, int *); int (*cl_cmp)(SLtype, VOID_STAR, VOID_STAR, int *); } SLang_Class_Type; /* These are the low-level functions for building push/pop methods. They * know nothing about memory management. For SLANG_CLASS_TYPE_MMT, use the * MMT push/pop functions instead. */ extern int SLclass_push_double_obj (SLtype, double); extern int SLclass_push_float_obj (SLtype, float); extern int SLclass_push_long_obj (SLtype, long); extern int SLclass_push_int_obj (SLtype, int); extern int SLclass_push_short_obj (SLtype, short); extern int SLclass_push_char_obj (SLtype, char); extern int SLclass_push_ptr_obj (SLtype, VOID_STAR); extern int SLclass_pop_double_obj (SLtype, double *); extern int SLclass_pop_float_obj (SLtype, float *); extern int SLclass_pop_long_obj (SLtype, long *); extern int SLclass_pop_int_obj (SLtype, int *); extern int SLclass_pop_short_obj (SLtype, short *); extern int SLclass_pop_char_obj (SLtype, char *); extern int SLclass_pop_ptr_obj (SLtype, VOID_STAR *); extern SLang_Class_Type *SLclass_allocate_class (char *); extern int SLclass_get_class_id (SLang_Class_Type *cl); extern int SLclass_create_synonym (char *, SLtype); extern int SLclass_is_class_defined (SLtype); extern int SLclass_dup_object (SLtype type, VOID_STAR from, VOID_STAR to); extern int SLclass_register_class (SLang_Class_Type *, SLtype, unsigned int, SLtype); extern int SLclass_set_string_function (SLang_Class_Type *, char *(*)(SLtype, VOID_STAR)); extern int SLclass_set_destroy_function (SLang_Class_Type *, void (*)(SLtype, VOID_STAR)); extern int SLclass_set_push_function (SLang_Class_Type *, int (*)(SLtype, VOID_STAR)); extern int SLclass_set_apush_function (SLang_Class_Type *, int (*)(SLtype, VOID_STAR)); extern int SLclass_set_pop_function (SLang_Class_Type *, int (*)(SLtype, VOID_STAR)); extern int SLclass_set_aget_function (SLang_Class_Type *, int (*)(SLtype, unsigned int)); extern int SLclass_set_aput_function (SLang_Class_Type *, int (*)(SLtype, unsigned int)); extern int SLclass_set_anew_function (SLang_Class_Type *, int (*)(SLtype, unsigned int)); extern int SLclass_set_sget_function (SLang_Class_Type *, int (*)(SLtype, char *)); extern int SLclass_set_sput_function (SLang_Class_Type *, int (*)(SLtype, char *)); extern int SLclass_set_acopy_function (SLang_Class_Type *, int (*)(SLtype, VOID_STAR, VOID_STAR)); /* Typecast object on the stack to type p1. p2 and p3 should be set to 1 */ extern int SLclass_typecast (SLtype, int, int); extern int SLclass_add_unary_op (SLtype, int (*) (int, SLtype, VOID_STAR, unsigned int, VOID_STAR), int (*) (int, SLtype, SLtype *)); extern int SLclass_add_app_unary_op (SLtype, int (*) (int, SLtype, VOID_STAR, unsigned int, VOID_STAR), int (*) (int, SLtype, SLtype *)); extern int SLclass_add_binary_op (SLtype, SLtype, int (*) (int, SLtype, VOID_STAR, unsigned int, SLtype, VOID_STAR, unsigned int, VOID_STAR), int (*) (int, SLtype, SLtype, SLtype *)); extern int SLclass_add_math_op (SLtype, int (*)(int, SLtype, VOID_STAR, unsigned int, VOID_STAR), int (*)(int, SLtype, SLtype *)); extern int SLclass_add_typecast (SLtype /* from */, SLtype /* to */, int (*)_PROTO((SLtype, VOID_STAR, unsigned int, SLtype, VOID_STAR)), int /* allow implicit typecasts */ ); extern char *SLclass_get_datatype_name (SLtype); extern double SLcomplex_abs (double *); extern double *SLcomplex_times (double *, double *, double *); extern double *SLcomplex_divide (double *, double *, double *); extern double *SLcomplex_sin (double *, double *); extern double *SLcomplex_cos (double *, double *); extern double *SLcomplex_tan (double *, double *); extern double *SLcomplex_asin (double *, double *); extern double *SLcomplex_acos (double *, double *); extern double *SLcomplex_atan (double *, double *); extern double *SLcomplex_exp (double *, double *); extern double *SLcomplex_log (double *, double *); extern double *SLcomplex_log10 (double *, double *); extern double *SLcomplex_sqrt (double *, double *); extern double *SLcomplex_sinh (double *, double *); extern double *SLcomplex_cosh (double *, double *); extern double *SLcomplex_tanh (double *, double *); extern double *SLcomplex_pow (double *, double *, double *); extern double SLmath_hypot (double x, double y); /* Not implemented yet */ extern double *SLcomplex_asinh (double *, double *); extern double *SLcomplex_acosh (double *, double *); extern double *SLcomplex_atanh (double *, double *); #ifdef _SLANG_SOURCE_ typedef struct _SLang_MMT_Type SLang_MMT_Type; #else typedef int SLang_MMT_Type; #endif extern void SLang_free_mmt (SLang_MMT_Type *); extern VOID_STAR SLang_object_from_mmt (SLang_MMT_Type *); extern SLang_MMT_Type *SLang_create_mmt (SLtype, VOID_STAR); extern int SLang_push_mmt (SLang_MMT_Type *); extern SLang_MMT_Type *SLang_pop_mmt (SLtype); extern void SLang_inc_mmt (SLang_MMT_Type *); /* Maximum number of dimensions of an array. */ #define SLARRAY_MAX_DIMS 7 typedef struct _SLang_Array_Type { SLtype data_type; unsigned int sizeof_type; VOID_STAR data; unsigned int num_elements; unsigned int num_dims; int dims [SLARRAY_MAX_DIMS]; VOID_STAR (*index_fun)_PROTO((struct _SLang_Array_Type *, int *)); /* This function is designed to allow a type to store an array in * any manner it chooses. This function returns the address of the data * value at the specified index location. */ unsigned int flags; #define SLARR_DATA_VALUE_IS_READ_ONLY 1 #define SLARR_DATA_VALUE_IS_POINTER 2 #define SLARR_DATA_VALUE_IS_RANGE 4 #define SLARR_DATA_VALUE_IS_INTRINSIC 8 SLang_Class_Type *cl; unsigned int num_refs; void (*free_fun)_PROTO((struct _SLang_Array_Type *)); VOID_STAR client_data; } SLang_Array_Type; extern int SLang_pop_array_of_type (SLang_Array_Type **, SLtype); extern int SLang_pop_array (SLang_Array_Type **, int); extern int SLang_push_array (SLang_Array_Type *, int); extern void SLang_free_array (SLang_Array_Type *); extern SLang_Array_Type *SLang_create_array (SLtype, int, VOID_STAR, int *, unsigned int); extern SLang_Array_Type *SLang_duplicate_array (SLang_Array_Type *); extern int SLang_get_array_element (SLang_Array_Type *, int *, VOID_STAR); extern int SLang_set_array_element (SLang_Array_Type *, int *, VOID_STAR); typedef int SLarray_Contract_Fun_Type (VOID_STAR xp, unsigned int increment, unsigned int num, VOID_STAR yp); typedef struct { SLtype from_type; /* if array is this type */ SLtype typecast_to_type; /* typecast it to this */ SLtype result_type; /* to produce this */ SLarray_Contract_Fun_Type *f; /* via this function */ } SLarray_Contract_Type; extern int SLarray_contract_array (SLCONST SLarray_Contract_Type *); typedef int SLarray_Map_Fun_Type (SLtype xtype, VOID_STAR xp, unsigned int increment, unsigned int num, SLtype ytype, VOID_STAR yp, VOID_STAR clientdata); typedef struct { SLtype from_type; /* if array is this type */ SLtype typecast_to_type; /* typecast it to this */ SLtype result_type; /* to produce this */ SLarray_Map_Fun_Type *f; /* via this function */ } SLarray_Map_Type; extern int SLarray_map_array_1 (SLCONST SLarray_Map_Type *, int *use_this_dim, VOID_STAR clientdata); extern int SLarray_map_array (SLCONST SLarray_Map_Type *); /*}}}*/ /*{{{ Interpreter Function Prototypes */ extern volatile int SLang_Error; /* Non zero if error occurs. Must be reset to zero to continue. */ /* error codes, severe errors are less than 0 */ #define SL_APPLICATION_ERROR -2 #define SL_VARIABLE_UNINITIALIZED -3 #define SL_INTERNAL_ERROR -5 #define SL_STACK_OVERFLOW -6 #define SL_STACK_UNDERFLOW -7 #define SL_UNDEFINED_NAME -8 #define SL_SYNTAX_ERROR -9 #define SL_DUPLICATE_DEFINITION -10 #define SL_TYPE_MISMATCH -11 #define SL_OBJ_UNKNOWN -13 #define SL_UNKNOWN_ERROR -14 #define SL_TYPE_UNDEFINED_OP_ERROR -16 #define SL_INTRINSIC_ERROR 1 /* Intrinsic error is an error generated by intrinsic functions */ #define SL_USER_BREAK 2 #define SL_DIVIDE_ERROR 3 #define SL_OBJ_NOPEN 4 #define SL_USER_ERROR 5 #define SL_USAGE_ERROR 6 #define SL_READONLY_ERROR 7 #define SL_INVALID_PARM 8 #define SL_NOT_IMPLEMENTED 9 #define SL_MALLOC_ERROR 10 #define SL_OVERFLOW 11 #define SL_FLOATING_EXCEPTION 12 /* Compatibility */ #define USER_BREAK SL_USER_BREAK #define INTRINSIC_ERROR SL_INTRINSIC_ERROR extern int SLang_Traceback; /* If non-zero, dump an S-Lang traceback upon error. Available as _traceback in S-Lang. */ extern char *SLang_User_Prompt; /* Prompt to use when reading from stdin */ extern const int SLang_Version; extern char *SLang_Version_String; extern char *SLang_Doc_Dir; extern void (*SLang_VMessage_Hook) (char *, va_list); extern void SLang_vmessage (char *, ...) _SLATTRIBUTE_PRINTF(1,2); extern void (*SLang_Error_Hook)(char *); /* Pointer to application dependent error messaging routine. By default, messages are displayed on stderr. */ extern void (*SLang_Exit_Error_Hook)(char *, va_list); extern void SLang_exit_error (char *, ...) _SLATTRIBUTE_((format (printf, 1, 2), noreturn)); extern void (*SLang_Dump_Routine)(char *); /* Called if S-Lang traceback is enabled as well as other debugging routines (e.g., trace). By default, these messages go to stderr. */ extern void (*SLang_Interrupt)(void); /* function to call whenever inner interpreter is entered. This is a good place to set SLang_Error to USER_BREAK. */ extern void (*SLang_User_Clear_Error)(void); /* function that gets called when '_clear_error' is called. */ /* If non null, these call C functions before and after a slang function. */ extern void (*SLang_Enter_Function)(char *); extern void (*SLang_Exit_Function)(char *); extern int SLang_Num_Function_Args; /* Functions: */ extern int SLang_init_all (void); /* Initializes interpreter and all modules */ extern int SLang_init_slang (void); /* This function is mandatory and must be called by all applications that * use the interpreter */ extern int SLang_init_posix_process (void); /* process specific intrinsics */ extern int SLang_init_stdio (void); /* fgets, etc. stdio functions */ extern int SLang_init_posix_dir (void); extern int SLang_init_ospath (void); extern int SLang_init_slmath (void); /* called if math functions sin, cos, etc... are needed. */ extern int SLang_init_slfile (void); extern int SLang_init_slunix (void); /* These functions are obsolte. Use init_stdio, posix_process, etc. */ extern int SLang_init_slassoc (void); /* Assoc Arrays (Hashes) */ extern int SLang_init_array (void); /* Additional arrays functions: transpose, etc... */ extern int SLang_init_array_extra (void); /* Additional arrays functions: sum, min, max, ... */ /* Dynamic linking facility */ extern int SLang_init_import (void); extern int SLang_load_file (char *); /* Load a file of S-Lang code for interpreting. If the parameter is * NULL, input comes from stdin. */ extern void SLang_restart(int); /* should be called if an error occurs. If the passed integer is * non-zero, items are popped off the stack; otherwise, the stack is * left intact. Any time the stack is believed to be trashed, this routine * should be called with a non-zero argument (e.g., if setjmp/longjmp is * called). */ extern int SLang_byte_compile_file(char *, int); /* takes a file of S-Lang code and ``byte-compiles'' it for faster * loading. The new filename is equivalent to the old except that a `c' is * appended to the name. (e.g., init.sl --> init.slc). The second * specified the method; currently, it is not used. */ extern int SLang_autoload(char *, char *); /* Automatically load S-Lang function p1 from file p2. This function is also available via S-Lang */ extern int SLang_load_string(char *); /* Like SLang_load_file except input is from a null terminated string. */ extern int SLdo_pop(void); /* pops item off stack and frees any memory associated with it */ extern int SLdo_pop_n(unsigned int); /* pops n items off stack and frees any memory associated with them */ extern int SLang_pop_datatype (SLtype *); extern int SLang_push_datatype (SLtype); extern int SLang_pop_integer(int *); extern int SLang_pop_uinteger(unsigned int *); /* pops integer *p0 from the stack. Returns 0 upon success and non-zero * if the stack is empty or a type mismatch occurs, setting SLang_Error. */ extern int SLang_pop_char (char *); extern int SLang_pop_uchar (SLtype *); extern int SLang_pop_short(short *); extern int SLang_pop_ushort(unsigned short *); extern int SLang_pop_long(long *); extern int SLang_pop_ulong(unsigned long *); extern int SLang_pop_float(float *); extern int SLang_pop_double(double *, int *, int *); /* Pops double *p1 from stack. If *p3 is non-zero, *p1 was derived from the integer *p2. Returns zero upon success. */ extern int SLang_pop_complex (double *, double *); extern int SLpop_string (char **); extern int SLang_pop_string(char **, int *); /* pops string *p0 from stack. If *p1 is non-zero, the string must be * freed after its use. DO NOT FREE p0 if *p1 IS ZERO! Returns 0 upon * success */ extern int SLang_push_complex (double, double); extern int SLang_push_char (char); extern int SLang_push_uchar (SLtype); extern int SLang_push_integer(int); extern int SLang_push_uinteger(unsigned int); /* push integer p1 on stack */ extern int SLang_push_short(short); extern int SLang_push_ushort(unsigned short); extern int SLang_push_long(long); extern int SLang_push_ulong(unsigned long); extern int SLang_push_float(float); extern int SLang_push_double(double); /* Push double onto stack */ extern int SLang_push_string(char *); /* Push string p1 onto stack */ extern int SLang_push_malloced_string(char *); /* The normal SLang_push_string pushes an slstring. This one converts * a normally malloced string to an slstring, and then frees the * malloced string. So, do NOT use the malloced string after calling * this routine because it will be freed! The routine returns -1 upon * error, but the string will be freed. */ extern int SLang_push_null (void); extern int SLang_pop_null (void); extern int SLang_push_value (SLtype type, VOID_STAR); extern int SLang_pop_value (SLtype type, VOID_STAR); extern void SLang_free_value (SLtype type, VOID_STAR); typedef struct _SLang_Object_Type SLang_Any_Type; extern int SLang_pop_anytype (SLang_Any_Type **); extern int SLang_push_anytype (SLang_Any_Type *); extern void SLang_free_anytype (SLang_Any_Type *); #ifdef _SLANG_SOURCE_ typedef struct _SLang_Ref_Type SLang_Ref_Type; #else typedef int SLang_Ref_Type; #endif extern int SLang_pop_ref (SLang_Ref_Type **); extern void SLang_free_ref (SLang_Ref_Type *); extern int SLang_assign_to_ref (SLang_Ref_Type *, SLtype, VOID_STAR); extern SLang_Name_Type *SLang_pop_function (void); extern SLang_Name_Type *SLang_get_fun_from_ref (SLang_Ref_Type *); extern void SLang_free_function (SLang_Name_Type *f); /* C structure interface */ extern int SLang_push_cstruct (VOID_STAR, SLang_CStruct_Field_Type *); extern int SLang_pop_cstruct (VOID_STAR, SLang_CStruct_Field_Type *); extern void SLang_free_cstruct (VOID_STAR, SLang_CStruct_Field_Type *); extern int SLang_assign_cstruct_to_ref (SLang_Ref_Type *, VOID_STAR, SLang_CStruct_Field_Type *); extern int SLang_is_defined(char *); /* Return non-zero is p1 is defined otherwise returns 0. */ extern int SLang_run_hooks(char *, unsigned int, ...); /* calls S-Lang function p1 pushing p2 strings in the variable argument * list onto the stack first. * Returns -1 upon error, 1 if hooks exists and it ran, * or 0 if hook does not exist. Thus it returns non-zero is hook was called. */ /* These functions return 1 if the indicated function exists and the function * runs without error. If the function does not exist, the function returns * 0. Otherwise -1 is returned with SLang_Error set appropriately. */ extern int SLexecute_function (SLang_Name_Type *); extern int SLang_execute_function(char *); extern int SLang_end_arg_list (void); extern int SLang_start_arg_list (void); extern void SLang_verror (int, char *, ...) _SLATTRIBUTE_PRINTF(2,3); extern void SLang_doerror(char *); /* set SLang_Error and display p1 as error message */ extern int SLang_add_intrinsic_array (char *, /* name */ SLtype, /* type */ int, /* readonly */ VOID_STAR, /* data */ unsigned int, ...); /* num dims */ extern int SLextract_list_element (char *, unsigned int, char, char *, unsigned int); extern void SLexpand_escaped_string (register char *, register char *, register char *); extern SLang_Name_Type *SLang_get_function (char *); extern void SLang_release_function (SLang_Name_Type *); extern int SLreverse_stack (int); extern int SLroll_stack (int); /* If argument p is positive, the top p objects on the stack are rolled * up. If negative, the stack is rolled down. */ extern int SLdup_n (int n); /* Duplicate top n elements of stack */ extern int SLang_peek_at_stack1 (void); extern int SLang_peek_at_stack (void); /* Returns type of next object on stack-- -1 upon stack underflow. */ extern void SLmake_lut (unsigned char *, unsigned char *, unsigned char); extern int SLang_guess_type (char *); extern int SLstruct_create_struct (unsigned int, char **, SLtype *, VOID_STAR *); /*}}}*/ /*{{{ Misc Functions */ /* This is an interface to atexit */ extern int SLang_add_cleanup_function (void (*)(void)); extern char *SLmake_string (char *); extern char *SLmake_nstring (char *, unsigned int); /* Returns a null terminated string made from the first n characters of the * string. */ /* The string created by this routine must be freed by SLang_free_slstring * and nothing else!! Also these strings must not be modified. Use * SLmake_string if you intend to modify them!! */ extern char *SLang_create_nslstring (char *, unsigned int); extern char *SLang_create_slstring (char *); extern void SLang_free_slstring (char *); /* handles NULL */ extern int SLang_pop_slstring (char **); /* free with SLang_free_slstring */ extern char *SLang_concat_slstrings (char *a, char *b); extern char *SLang_create_static_slstring (char *); /* adds a string that will not get deleted */ extern void SLstring_dump_stats (void); /* Binary strings */ /* The binary string is an opaque type. Use the SLbstring_get_pointer function * to get a pointer and length. */ typedef struct _SLang_BString_Type SLang_BString_Type; extern unsigned char *SLbstring_get_pointer (SLang_BString_Type *, unsigned int *); extern SLang_BString_Type *SLbstring_dup (SLang_BString_Type *); extern SLang_BString_Type *SLbstring_create (unsigned char *, unsigned int); /* The create_malloced function used the first argument which is assumed * to be a pointer to a len + 1 malloced string. The extra byte is for * \0 termination. */ extern SLang_BString_Type *SLbstring_create_malloced (unsigned char *, unsigned int, int); /* Create a bstring from an slstring */ extern SLang_BString_Type *SLbstring_create_slstring (char *); extern void SLbstring_free (SLang_BString_Type *); extern int SLang_pop_bstring (SLang_BString_Type **); extern int SLang_push_bstring (SLang_BString_Type *); extern char *SLmalloc (unsigned int); extern char *SLcalloc (unsigned int, unsigned int); extern void SLfree(char *); /* This function handles NULL */ extern char *SLrealloc (char *, unsigned int); extern char *SLcurrent_time_string (void); extern int SLatoi(unsigned char *); extern long SLatol (unsigned char *); extern unsigned long SLatoul (unsigned char *); extern int SLang_pop_fileptr (SLang_MMT_Type **, FILE **); extern char *SLang_get_name_from_fileptr (SLang_MMT_Type *); typedef struct _SLFile_FD_Type SLFile_FD_Type; extern SLFile_FD_Type *SLfile_create_fd (char *, int); extern void SLfile_free_fd (SLFile_FD_Type *); extern int SLfile_push_fd (SLFile_FD_Type *); extern int SLfile_pop_fd (SLFile_FD_Type **); extern int SLfile_get_fd (SLFile_FD_Type *, int *); extern SLFile_FD_Type *SLfile_dup_fd (SLFile_FD_Type *f0); extern int SLang_init_posix_io (void); typedef double (*SLang_To_Double_Fun_Type)(VOID_STAR); extern SLang_To_Double_Fun_Type SLarith_get_to_double_fun (SLtype, unsigned int *); extern int SLang_set_argc_argv (int, char **); /*}}}*/ /*{{{ SLang getkey interface Functions */ #ifdef REAL_UNIX_SYSTEM extern int SLang_TT_Baud_Rate; extern int SLang_TT_Read_FD; #endif extern int SLang_init_tty (int, int, int); /* Initializes the tty for single character input. If the first parameter *p1 * is in the range 0-255, it will be used for the abort character; * otherwise, (unix only) if it is -1, the abort character will be the one * used by the terminal. If the second parameter p2 is non-zero, flow * control is enabled. If the last parmeter p3 is zero, output processing * is NOT turned on. A value of zero is required for the screen management * routines. Returns 0 upon success. In addition, if SLang_TT_Baud_Rate == * 0 when this function is called, SLang will attempt to determine the * terminals baud rate. As far as the SLang library is concerned, if * SLang_TT_Baud_Rate is less than or equal to zero, the baud rate is * effectively infinite. */ extern void SLang_reset_tty (void); /* Resets tty to what it was prior to a call to SLang_init_tty */ #ifdef REAL_UNIX_SYSTEM extern void SLtty_set_suspend_state (int); /* If non-zero argument, terminal driver will be told to react to the * suspend character. If 0, it will not. */ extern int (*SLang_getkey_intr_hook) (void); #endif #define SLANG_GETKEY_ERROR 0xFFFF extern unsigned int SLang_getkey (void); /* reads a single key from the tty. If the read fails, 0xFFFF is returned. */ #ifdef IBMPC_SYSTEM extern int SLgetkey_map_to_ansi (int); #endif extern int SLang_ungetkey_string (unsigned char *, unsigned int); extern int SLang_buffer_keystring (unsigned char *, unsigned int); extern int SLang_ungetkey (unsigned char); extern void SLang_flush_input (void); extern int SLang_input_pending (int); extern int SLang_Abort_Char; /* The value of the character (0-255) used to trigger SIGINT */ extern int SLang_Ignore_User_Abort; /* If non-zero, pressing the abort character will not result in USER_BREAK * SLang_Error. */ extern int SLang_set_abort_signal (void (*)(int)); /* If SIGINT is generated, the function p1 will be called. If p1 is NULL * the SLang_default signal handler is called. This sets SLang_Error to * USER_BREAK. I suspect most users will simply want to pass NULL. */ extern unsigned int SLang_Input_Buffer_Len; extern volatile int SLKeyBoard_Quit; #ifdef VMS /* If this function returns -1, ^Y will be added to input buffer. */ extern int (*SLtty_VMS_Ctrl_Y_Hook) (void); #endif /*}}}*/ /*{{{ SLang Keymap routines */ typedef struct SLKeymap_Function_Type { char *name; int (*f)(void); } SLKeymap_Function_Type; #define SLANG_MAX_KEYMAP_KEY_SEQ 14 typedef struct SLang_Key_Type { struct SLang_Key_Type *next; union { char *s; FVOID_STAR f; unsigned int keysym; } f; unsigned char type; /* type of function */ #define SLKEY_F_INTERPRET 0x01 #define SLKEY_F_INTRINSIC 0x02 #define SLKEY_F_KEYSYM 0x03 unsigned char str[SLANG_MAX_KEYMAP_KEY_SEQ + 1];/* key sequence */ } SLang_Key_Type; typedef struct SLKeyMap_List_Type { char *name; /* hashed string */ SLang_Key_Type *keymap; SLKeymap_Function_Type *functions; /* intrinsic functions */ } SLKeyMap_List_Type; /* This is arbitrary but I have got to start somewhere */ #define SLANG_MAX_KEYMAPS 30 extern SLKeyMap_List_Type SLKeyMap_List[SLANG_MAX_KEYMAPS]; extern char *SLang_process_keystring(char *); extern int SLkm_define_key (char *, FVOID_STAR, SLKeyMap_List_Type *); extern int SLang_define_key(char *, char *, SLKeyMap_List_Type *); /* Like define_key1 except that p2 is a string that is to be associated with * a function in the functions field of p3. */ extern int SLkm_define_keysym (char *, unsigned int, SLKeyMap_List_Type *); extern void SLang_undefine_key(char *, SLKeyMap_List_Type *); extern SLKeyMap_List_Type *SLang_create_keymap(char *, SLKeyMap_List_Type *); /* create and returns a pointer to a new keymap named p1 created by copying * keymap p2. If p2 is NULL, it is up to the calling routine to initialize * the keymap. */ extern char *SLang_make_keystring(unsigned char *); extern SLang_Key_Type *SLang_do_key(SLKeyMap_List_Type *, int (*)(void)); /* read a key using keymap p1 with getkey function p2 */ extern FVOID_STAR SLang_find_key_function(char *, SLKeyMap_List_Type *); extern SLKeyMap_List_Type *SLang_find_keymap(char *); extern int SLang_Last_Key_Char; extern int SLang_Key_TimeOut_Flag; /*}}}*/ /*{{{ SLang Readline Interface */ typedef struct SLang_Read_Line_Type { struct SLang_Read_Line_Type *prev, *next; unsigned char *buf; int buf_len; /* number of chars in the buffer */ int num; /* num and misc are application specific*/ int misc; } SLang_Read_Line_Type; /* Maximum size of display */ #define SLRL_DISPLAY_BUFFER_SIZE 256 typedef struct { SLang_Read_Line_Type *root, *tail, *last; unsigned char *buf; /* edit buffer */ int buf_len; /* sizeof buffer */ int point; /* current editing point */ int tab; /* tab width */ int len; /* current line size */ /* display variables */ int edit_width; /* length of display field */ int curs_pos; /* current column */ int start_column; /* column offset of display */ int dhscroll; /* amount to use for horiz scroll */ char *prompt; FVOID_STAR last_fun; /* last function executed by rl */ /* These two contain an image of what is on the display */ unsigned char upd_buf1[SLRL_DISPLAY_BUFFER_SIZE]; unsigned char upd_buf2[SLRL_DISPLAY_BUFFER_SIZE]; unsigned char *old_upd, *new_upd; /* pointers to previous two buffers */ int new_upd_len, old_upd_len; /* length of output buffers */ SLKeyMap_List_Type *keymap; /* tty variables */ unsigned int flags; /* */ #define SL_RLINE_NO_ECHO 1 #define SL_RLINE_USE_ANSI 2 #define SL_RLINE_BLINK_MATCH 4 unsigned int (*getkey)(void); /* getkey function -- required */ void (*tt_goto_column)(int); void (*tt_insert)(char); void (*update_hook)(unsigned char *, int, int); /* The update hook is called with a pointer to a buffer p1 that contains * an image of what the update hook is suppoed to produce. The length * of the buffer is p2 and after the update, the cursor is to be placed * in column p3. */ /* This function is only called when blinking matches */ int (*input_pending)(int); unsigned long reserved[4]; } SLang_RLine_Info_Type; extern int SLang_RL_EOF_Char; extern SLang_Read_Line_Type * SLang_rline_save_line (SLang_RLine_Info_Type *); extern int SLang_init_readline (SLang_RLine_Info_Type *); extern int SLang_read_line (SLang_RLine_Info_Type *); extern int SLang_rline_insert (char *); extern void SLrline_redraw (SLang_RLine_Info_Type *); extern int SLang_Rline_Quit; /*}}}*/ /*{{{ Low Level Screen Output Interface */ extern unsigned long SLtt_Num_Chars_Output; extern int SLtt_Baud_Rate; typedef unsigned long SLtt_Char_Type; #define SLTT_BOLD_MASK 0x01000000UL #define SLTT_BLINK_MASK 0x02000000UL #define SLTT_ULINE_MASK 0x04000000UL #define SLTT_REV_MASK 0x08000000UL #define SLTT_ALTC_MASK 0x10000000UL extern int SLtt_Screen_Rows; extern int SLtt_Screen_Cols; extern int SLtt_Term_Cannot_Insert; extern int SLtt_Term_Cannot_Scroll; extern int SLtt_Use_Ansi_Colors; extern int SLtt_Ignore_Beep; #if defined(REAL_UNIX_SYSTEM) extern int SLtt_Force_Keypad_Init; extern int SLang_TT_Write_FD; #endif #ifndef IBMPC_SYSTEM extern char *SLtt_Graphics_Char_Pairs; #endif #ifndef __GO32__ #if defined(VMS) || defined(REAL_UNIX_SYSTEM) extern int SLtt_Blink_Mode; extern int SLtt_Use_Blink_For_ACS; extern int SLtt_Newline_Ok; extern int SLtt_Has_Alt_Charset; extern int SLtt_Has_Status_Line; /* if 0, NO. If > 0, YES, IF -1, ?? */ # ifndef VMS extern int SLtt_Try_Termcap; # endif #endif #endif #if defined(IBMPC_SYSTEM) extern int SLtt_Msdos_Cheap_Video; #endif typedef unsigned short SLsmg_Char_Type; #define SLSMG_EXTRACT_CHAR(x) ((x) & 0xFF) #define SLSMG_EXTRACT_COLOR(x) (((x)>>8)&0xFF) #define SLSMG_BUILD_CHAR(ch,color) (((SLsmg_Char_Type)(unsigned char)(ch))|((color)<<8)) extern int SLtt_flush_output (void); extern void SLtt_set_scroll_region(int, int); extern void SLtt_reset_scroll_region(void); extern void SLtt_reverse_video (int); extern void SLtt_bold_video (void); extern void SLtt_begin_insert(void); extern void SLtt_end_insert(void); extern void SLtt_del_eol(void); extern void SLtt_goto_rc (int, int); extern void SLtt_delete_nlines(int); extern void SLtt_delete_char(void); extern void SLtt_erase_line(void); extern void SLtt_normal_video(void); extern void SLtt_cls(void); extern void SLtt_beep(void); extern void SLtt_reverse_index(int); extern void SLtt_smart_puts(SLsmg_Char_Type *, SLsmg_Char_Type *, int, int); extern void SLtt_write_string (char *); extern void SLtt_putchar(char); extern int SLtt_init_video (void); extern int SLtt_reset_video (void); extern void SLtt_get_terminfo(void); extern void SLtt_get_screen_size (void); extern int SLtt_set_cursor_visibility (int); extern int SLtt_set_mouse_mode (int, int); #if defined(VMS) || defined(REAL_UNIX_SYSTEM) extern int SLtt_initialize (char *); extern void SLtt_enable_cursor_keys(void); extern void SLtt_set_term_vtxxx(int *); extern void SLtt_set_color_esc (int, char *); extern void SLtt_wide_width(void); extern void SLtt_narrow_width(void); extern void SLtt_set_alt_char_set (int); extern int SLtt_write_to_status_line (char *, int); extern void SLtt_disable_status_line (void); # ifdef REAL_UNIX_SYSTEM /* These are termcap/terminfo routines that assume SLtt_initialize has * been called. */ extern char *SLtt_tgetstr (char *); extern int SLtt_tgetnum (char *); extern int SLtt_tgetflag (char *); /* The following are terminfo-only routines -- these prototypes will change * in V2.x. */ extern char *SLtt_tigetent (char *); extern char *SLtt_tigetstr (char *, char **); extern int SLtt_tigetnum (char *, char **); # endif #endif extern SLtt_Char_Type SLtt_get_color_object (int); extern void SLtt_set_color_object (int, SLtt_Char_Type); extern void SLtt_set_color (int, char *, char *, char *); extern void SLtt_set_mono (int, char *, SLtt_Char_Type); extern void SLtt_add_color_attribute (int, SLtt_Char_Type); extern void SLtt_set_color_fgbg (int, SLtt_Char_Type, SLtt_Char_Type); /*}}}*/ /*{{{ SLang Preprocessor Interface */ typedef struct { int this_level; int exec_level; int prev_exec_level; char preprocess_char; char comment_char; unsigned char flags; #define SLPREP_BLANK_LINES_OK 1 #define SLPREP_COMMENT_LINES_OK 2 #define SLPREP_STOP_READING 4 #define SLPREP_EMBEDDED_TEXT 8 } SLPreprocess_Type; extern int SLprep_open_prep (SLPreprocess_Type *); extern void SLprep_close_prep (SLPreprocess_Type *); extern int SLprep_line_ok (char *, SLPreprocess_Type *); extern int SLdefine_for_ifdef (char *); /* Adds a string to the SLang #ifdef preparsing defines. SLang already defines MSDOS, UNIX, and VMS on the appropriate system. */ extern int (*SLprep_exists_hook) (char *, char); /*}}}*/ /*{{{ SLsmg Screen Management Functions */ extern void SLsmg_fill_region (int, int, unsigned int, unsigned int, unsigned char); extern void SLsmg_set_char_set (int); #ifndef IBMPC_SYSTEM extern int SLsmg_Scroll_Hash_Border; #endif extern int SLsmg_suspend_smg (void); extern int SLsmg_resume_smg (void); extern void SLsmg_erase_eol (void); extern void SLsmg_gotorc (int, int); extern void SLsmg_erase_eos (void); extern void SLsmg_reverse_video (void); extern void SLsmg_set_color (int); extern void SLsmg_normal_video (void); extern void SLsmg_printf (char *, ...) _SLATTRIBUTE_PRINTF(1,2); /* extern void SLsmg_printf (char *, ...) _SLATTRIBUTE_PRINTF(1,2); */ extern void SLsmg_vprintf (char *, va_list); extern void SLsmg_write_string (char *); extern void SLsmg_write_nstring (char *, unsigned int); extern void SLsmg_write_char (char); extern void SLsmg_write_nchars (char *, unsigned int); extern void SLsmg_write_wrapped_string (char *, int, int, unsigned int, unsigned int, int); extern void SLsmg_cls (void); extern void SLsmg_refresh (void); extern void SLsmg_touch_lines (int, unsigned int); extern void SLsmg_touch_screen (void); extern int SLsmg_init_smg (void); extern int SLsmg_reinit_smg (void); extern void SLsmg_reset_smg (void); extern SLsmg_Char_Type SLsmg_char_at(void); extern void SLsmg_set_screen_start (int *, int *); extern void SLsmg_draw_hline (unsigned int); extern void SLsmg_draw_vline (int); extern void SLsmg_draw_object (int, int, unsigned char); extern void SLsmg_draw_box (int, int, unsigned int, unsigned int); extern int SLsmg_get_column(void); extern int SLsmg_get_row(void); extern void SLsmg_forward (int); extern void SLsmg_write_color_chars (SLsmg_Char_Type *, unsigned int); extern unsigned int SLsmg_read_raw (SLsmg_Char_Type *, unsigned int); extern unsigned int SLsmg_write_raw (SLsmg_Char_Type *, unsigned int); extern void SLsmg_set_color_in_region (int, int, int, unsigned int, unsigned int); extern int SLsmg_Display_Eight_Bit; extern int SLsmg_Tab_Width; #define SLSMG_NEWLINE_IGNORED 0 /* default */ #define SLSMG_NEWLINE_MOVES 1 /* moves to next line, column 0 */ #define SLSMG_NEWLINE_SCROLLS 2 /* moves but scrolls at bottom of screen */ #define SLSMG_NEWLINE_PRINTABLE 3 /* prints as ^J */ extern int SLsmg_Newline_Behavior; extern int SLsmg_Backspace_Moves; #ifdef IBMPC_SYSTEM # define SLSMG_HLINE_CHAR 0xC4 # define SLSMG_VLINE_CHAR 0xB3 # define SLSMG_ULCORN_CHAR 0xDA # define SLSMG_URCORN_CHAR 0xBF # define SLSMG_LLCORN_CHAR 0xC0 # define SLSMG_LRCORN_CHAR 0xD9 # define SLSMG_RTEE_CHAR 0xB4 # define SLSMG_LTEE_CHAR 0xC3 # define SLSMG_UTEE_CHAR 0xC2 # define SLSMG_DTEE_CHAR 0xC1 # define SLSMG_PLUS_CHAR 0xC5 /* There are several to choose from: 0xB0, 0xB1, and 0xB2 */ # define SLSMG_CKBRD_CHAR 0xB0 # define SLSMG_DIAMOND_CHAR 0x04 # define SLSMG_DEGREE_CHAR 0xF8 # define SLSMG_PLMINUS_CHAR 0xF1 # define SLSMG_BULLET_CHAR 0xF9 # define SLSMG_LARROW_CHAR 0x1B # define SLSMG_RARROW_CHAR 0x1A # define SLSMG_DARROW_CHAR 0x19 # define SLSMG_UARROW_CHAR 0x18 # define SLSMG_BOARD_CHAR 0xB2 # define SLSMG_BLOCK_CHAR 0xDB #else # if defined(AMIGA) # define SLSMG_HLINE_CHAR '-' # define SLSMG_VLINE_CHAR '|' # define SLSMG_ULCORN_CHAR '+' # define SLSMG_URCORN_CHAR '+' # define SLSMG_LLCORN_CHAR '+' # define SLSMG_LRCORN_CHAR '+' # define SLSMG_CKBRD_CHAR '#' # define SLSMG_RTEE_CHAR '+' # define SLSMG_LTEE_CHAR '+' # define SLSMG_UTEE_CHAR '+' # define SLSMG_DTEE_CHAR '+' # define SLSMG_PLUS_CHAR '+' # define SLSMG_DIAMOND_CHAR '+' # define SLSMG_DEGREE_CHAR '\\' # define SLSMG_PLMINUS_CHAR '#' # define SLSMG_BULLET_CHAR 'o' # define SLSMG_LARROW_CHAR '<' # define SLSMG_RARROW_CHAR '>' # define SLSMG_DARROW_CHAR 'v' # define SLSMG_UARROW_CHAR '^' # define SLSMG_BOARD_CHAR '#' # define SLSMG_BLOCK_CHAR '#' # else # define SLSMG_HLINE_CHAR 'q' # define SLSMG_VLINE_CHAR 'x' # define SLSMG_ULCORN_CHAR 'l' # define SLSMG_URCORN_CHAR 'k' # define SLSMG_LLCORN_CHAR 'm' # define SLSMG_LRCORN_CHAR 'j' # define SLSMG_CKBRD_CHAR 'a' # define SLSMG_RTEE_CHAR 'u' # define SLSMG_LTEE_CHAR 't' # define SLSMG_UTEE_CHAR 'w' # define SLSMG_DTEE_CHAR 'v' # define SLSMG_PLUS_CHAR 'n' # define SLSMG_DIAMOND_CHAR '`' # define SLSMG_DEGREE_CHAR 'f' # define SLSMG_PLMINUS_CHAR 'g' # define SLSMG_BULLET_CHAR '~' # define SLSMG_LARROW_CHAR ',' # define SLSMG_RARROW_CHAR '+' # define SLSMG_DARROW_CHAR '.' # define SLSMG_UARROW_CHAR '-' # define SLSMG_BOARD_CHAR 'h' # define SLSMG_BLOCK_CHAR '0' # endif /* AMIGA */ #endif /* IBMPC_SYSTEM */ #ifndef IBMPC_SYSTEM # define SLSMG_COLOR_BLACK 0x000000 # define SLSMG_COLOR_RED 0x000001 # define SLSMG_COLOR_GREEN 0x000002 # define SLSMG_COLOR_BROWN 0x000003 # define SLSMG_COLOR_BLUE 0x000004 # define SLSMG_COLOR_MAGENTA 0x000005 # define SLSMG_COLOR_CYAN 0x000006 # define SLSMG_COLOR_LGRAY 0x000007 # define SLSMG_COLOR_GRAY 0x000008 # define SLSMG_COLOR_BRIGHT_RED 0x000009 # define SLSMG_COLOR_BRIGHT_GREEN 0x00000A # define SLSMG_COLOR_BRIGHT_BROWN 0x00000B # define SLSMG_COLOR_BRIGHT_BLUE 0x00000C # define SLSMG_COLOR_BRIGHT_CYAN 0x00000D # define SLSMG_COLOR_BRIGHT_MAGENTA 0x00000E # define SLSMG_COLOR_BRIGHT_WHITE 0x00000F #endif typedef struct { void (*tt_normal_video)(void); void (*tt_set_scroll_region)(int, int); void (*tt_goto_rc)(int, int); void (*tt_reverse_index)(int); void (*tt_reset_scroll_region)(void); void (*tt_delete_nlines)(int); void (*tt_cls) (void); void (*tt_del_eol) (void); void (*tt_smart_puts) (SLsmg_Char_Type *, SLsmg_Char_Type *, int, int); int (*tt_flush_output) (void); int (*tt_reset_video) (void); int (*tt_init_video) (void); int *tt_screen_rows; int *tt_screen_cols; int *tt_term_cannot_scroll; int *tt_has_alt_charset; int *tt_use_blink_for_acs; char **tt_graphic_char_pairs; long reserved[4]; } SLsmg_Term_Type; extern void SLsmg_set_terminal_info (SLsmg_Term_Type *); /*}}}*/ /*{{{ SLang Keypad Interface */ #define SL_KEY_ERR 0xFFFF #define SL_KEY_UP 0x101 #define SL_KEY_DOWN 0x102 #define SL_KEY_LEFT 0x103 #define SL_KEY_RIGHT 0x104 #define SL_KEY_PPAGE 0x105 #define SL_KEY_NPAGE 0x106 #define SL_KEY_HOME 0x107 #define SL_KEY_END 0x108 #define SL_KEY_A1 0x109 #define SL_KEY_A3 0x10A #define SL_KEY_B2 0x10B #define SL_KEY_C1 0x10C #define SL_KEY_C3 0x10D #define SL_KEY_REDO 0x10E #define SL_KEY_UNDO 0x10F #define SL_KEY_BACKSPACE 0x110 #define SL_KEY_ENTER 0x111 #define SL_KEY_IC 0x112 #define SL_KEY_DELETE 0x113 #define SL_KEY_F0 0x200 #define SL_KEY_F(X) (SL_KEY_F0 + X) /* I do not intend to use keysymps > 0x1000. Applications can use those. */ /* Returns 0 upon success or -1 upon error. */ extern int SLkp_define_keysym (char *, unsigned int); /* This function must be called AFTER SLtt_get_terminfo and not before. */ extern int SLkp_init (void); /* By default, SLang_getkey is used as the low-level function. This hook * allows you to specify something else. */ extern void SLkp_set_getkey_function (int (*)(void)); /* This function uses SLang_getkey and assumes that what ever initialization * is required for SLang_getkey has been performed. If you do not want * SLang_getkey to be used, then specify another function via * SLkp_set_getkey_function. */ extern int SLkp_getkey (void); /*}}}*/ /*{{{ SLang Scroll Interface */ typedef struct _SLscroll_Type { struct _SLscroll_Type *next; struct _SLscroll_Type *prev; unsigned int flags; } SLscroll_Type; typedef struct { unsigned int flags; SLscroll_Type *top_window_line; /* list element at top of window */ SLscroll_Type *bot_window_line; /* list element at bottom of window */ SLscroll_Type *current_line; /* current list element */ SLscroll_Type *lines; /* first list element */ unsigned int nrows; /* number of rows in window */ unsigned int hidden_mask; /* applied to flags in SLscroll_Type */ unsigned int line_num; /* current line number (visible) */ unsigned int num_lines; /* total number of lines (visible) */ unsigned int window_row; /* row of current_line in window */ unsigned int border; /* number of rows that form scroll border */ int cannot_scroll; /* should window scroll or recenter */ } SLscroll_Window_Type; extern int SLscroll_find_top (SLscroll_Window_Type *); extern int SLscroll_find_line_num (SLscroll_Window_Type *); extern unsigned int SLscroll_next_n (SLscroll_Window_Type *, unsigned int); extern unsigned int SLscroll_prev_n (SLscroll_Window_Type *, unsigned int); extern int SLscroll_pageup (SLscroll_Window_Type *); extern int SLscroll_pagedown (SLscroll_Window_Type *); /*}}}*/ /*{{{ Signal Routines */ typedef void SLSig_Fun_Type (int); extern SLSig_Fun_Type *SLsignal (int, SLSig_Fun_Type *); extern SLSig_Fun_Type *SLsignal_intr (int, SLSig_Fun_Type *); extern int SLsig_block_signals (void); extern int SLsig_unblock_signals (void); extern int SLsystem (char *); extern char *SLerrno_strerror (int); extern int SLerrno_set_errno (int); /*}}}*/ /*{{{ Interpreter Macro Definitions */ /* The definitions here are for objects that may be on the run-time stack. * They are actually sub_types of literal and data main_types. The actual * numbers are historical. */ #define SLANG_UNDEFINED_TYPE 0x00 /* MUST be 0 */ #define SLANG_VOID_TYPE 0x01 /* also matches ANY type */ #define SLANG_INT_TYPE 0x02 #define SLANG_DOUBLE_TYPE 0x03 #define SLANG_CHAR_TYPE 0x04 #define SLANG_INTP_TYPE 0x05 /* An object of SLANG_INTP_TYPE should never really occur on the stack. Rather, * the integer to which it refers will be there instead. It is defined here * because it is a valid type for MAKE_VARIABLE. */ #define SLANG_REF_TYPE 0x06 /* SLANG_REF_TYPE refers to an object on the stack that is a pointer (reference) * to some other object. */ #define SLANG_COMPLEX_TYPE 0x07 #define SLANG_NULL_TYPE 0x08 #define SLANG_UCHAR_TYPE 0x09 #define SLANG_SHORT_TYPE 0x0A #define SLANG_USHORT_TYPE 0x0B #define SLANG_UINT_TYPE 0x0C #define SLANG_LONG_TYPE 0x0D #define SLANG_ULONG_TYPE 0x0E #define SLANG_STRING_TYPE 0x0F #define SLANG_FLOAT_TYPE 0x10 #define SLANG_STRUCT_TYPE 0x11 #define SLANG_ISTRUCT_TYPE 0x12 #define SLANG_ARRAY_TYPE 0x20 #define SLANG_DATATYPE_TYPE 0x21 #define SLANG_FILE_PTR_TYPE 0x22 #define SLANG_ASSOC_TYPE 0x23 #define SLANG_ANY_TYPE 0x24 #define SLANG_BSTRING_TYPE 0x25 #define SLANG_FILE_FD_TYPE 0x26 #define _SLANG_MIN_UNUSED_TYPE 0x27 /* Compatibility */ #ifdef FLOAT_TYPE # undef FLOAT_TYPE #endif #define VOID_TYPE SLANG_VOID_TYPE #define INT_TYPE SLANG_INT_TYPE #define INTP_TYPE SLANG_INTP_TYPE #define FLOAT_TYPE SLANG_DOUBLE_TYPE #define ARRAY_TYPE SLANG_ARRAY_TYPE #define CHAR_TYPE SLANG_CHAR_TYPE #define STRING_TYPE SLANG_STRING_TYPE /* I am reserving values greater than or equal to 128 for user applications. * The first 127 are reserved for S-Lang. */ /* Binary and Unary Subtypes */ /* Since the application can define new types and can overload the binary * and unary operators, these definitions must be present in this file. * The current implementation assumes both unary and binary are distinct. */ #define SLANG_PLUS 0x01 #define SLANG_MINUS 0x02 #define SLANG_TIMES 0x03 #define SLANG_DIVIDE 0x04 #define SLANG_EQ 0x05 #define SLANG_NE 0x06 #define SLANG_GT 0x07 #define SLANG_GE 0x08 #define SLANG_LT 0x09 #define SLANG_LE 0x0A #define SLANG_POW 0x0B #define SLANG_OR 0x0C #define SLANG_AND 0x0D #define SLANG_BAND 0x0E #define SLANG_BOR 0x0F #define SLANG_BXOR 0x10 #define SLANG_SHL 0x11 #define SLANG_SHR 0x12 #define SLANG_MOD 0x13 /* UNARY subtypes (may be overloaded) */ #define SLANG_PLUSPLUS 0x20 #define SLANG_MINUSMINUS 0x21 #define SLANG_ABS 0x22 #define SLANG_SIGN 0x23 #define SLANG_SQR 0x24 #define SLANG_MUL2 0x25 #define SLANG_CHS 0x26 #define SLANG_NOT 0x27 #define SLANG_BNOT 0x28 extern char *SLang_Error_Message; int SLadd_intrinsic_variable (char *, VOID_STAR, unsigned char, int); int SLadd_intrinsic_function (char *, FVOID_STAR, unsigned char, unsigned int,...); int SLns_add_intrinsic_variable (SLang_NameSpace_Type *, char *, VOID_STAR, unsigned char, int); int SLns_add_intrinsic_function (SLang_NameSpace_Type *, char *, FVOID_STAR, unsigned char, unsigned int,...); #define MAKE_INTRINSIC_N(n,f,out,in,a1,a2,a3,a4,a5,a6,a7) \ {(n), NULL, SLANG_INTRINSIC, (FVOID_STAR) (f), \ {a1,a2,a3,a4,a5,a6,a7}, (in), (out)} #define MAKE_INTRINSIC_7(n,f,out,a1,a2,a3,a4,a5,a6,a7) \ MAKE_INTRINSIC_N(n,f,out,7,a1,a2,a3,a4,a5,a6,a7) #define MAKE_INTRINSIC_6(n,f,out,a1,a2,a3,a4,a5,a6) \ MAKE_INTRINSIC_N(n,f,out,6,a1,a2,a3,a4,a5,a6,0) #define MAKE_INTRINSIC_5(n,f,out,a1,a2,a3,a4,a5) \ MAKE_INTRINSIC_N(n,f,out,5,a1,a2,a3,a4,a5,0,0) #define MAKE_INTRINSIC_4(n,f,out,a1,a2,a3,a4) \ MAKE_INTRINSIC_N(n,f,out,4,a1,a2,a3,a4,0,0,0) #define MAKE_INTRINSIC_3(n,f,out,a1,a2,a3) \ MAKE_INTRINSIC_N(n,f,out,3,a1,a2,a3,0,0,0,0) #define MAKE_INTRINSIC_2(n,f,out,a1,a2) \ MAKE_INTRINSIC_N(n,f,out,2,a1,a2,0,0,0,0,0) #define MAKE_INTRINSIC_1(n,f,out,a1) \ MAKE_INTRINSIC_N(n,f,out,1,a1,0,0,0,0,0,0) #define MAKE_INTRINSIC_0(n,f,out) \ MAKE_INTRINSIC_N(n,f,out,0,0,0,0,0,0,0,0) #define MAKE_INTRINSIC_S(n,f,r) \ MAKE_INTRINSIC_1(n,f,r,SLANG_STRING_TYPE) #define MAKE_INTRINSIC_I(n,f,r) \ MAKE_INTRINSIC_1(n,f,r,SLANG_INT_TYPE) #define MAKE_INTRINSIC_SS(n,f,r) \ MAKE_INTRINSIC_2(n,f,r,SLANG_STRING_TYPE,SLANG_STRING_TYPE) #define MAKE_INTRINSIC_SI(n,f,r) \ MAKE_INTRINSIC_2(n,f,r,SLANG_STRING_TYPE,SLANG_INT_TYPE) #define MAKE_INTRINSIC_IS(n,f,r) \ MAKE_INTRINSIC_2(n,f,r,SLANG_INT_TYPE,SLANG_STRING_TYPE) #define MAKE_INTRINSIC_II(n,f,r) \ MAKE_INTRINSIC_2(n,f,r,SLANG_INT_TYPE,SLANG_INT_TYPE) #define MAKE_INTRINSIC_SSS(n,f,r) \ MAKE_INTRINSIC_3(n,f,r,SLANG_STRING_TYPE,SLANG_STRING_TYPE,SLANG_STRING_TYPE) #define MAKE_INTRINSIC_SSI(n,f,r) \ MAKE_INTRINSIC_3(n,f,r,SLANG_STRING_TYPE,SLANG_STRING_TYPE,SLANG_INT_TYPE) #define MAKE_INTRINSIC_SIS(n,f,r) \ MAKE_INTRINSIC_3(n,f,r,SLANG_STRING_TYPE,SLANG_INT_TYPE,SLANG_STRING_TYPE) #define MAKE_INTRINSIC_SII(n,f,r) \ MAKE_INTRINSIC_3(n,f,r,SLANG_STRING_TYPE,SLANG_INT_TYPE,SLANG_INT_TYPE) #define MAKE_INTRINSIC_ISS(n,f,r) \ MAKE_INTRINSIC_3(n,f,r,SLANG_INT_TYPE,SLANG_STRING_TYPE,SLANG_STRING_TYPE) #define MAKE_INTRINSIC_ISI(n,f,r) \ MAKE_INTRINSIC_3(n,f,r,SLANG_INT_TYPE,SLANG_STRING_TYPE,SLANG_INT_TYPE) #define MAKE_INTRINSIC_IIS(n,f,r) \ MAKE_INTRINSIC_3(n,f,r,SLANG_INT_TYPE,SLANG_INT_TYPE,SLANG_STRING_TYPE) #define MAKE_INTRINSIC_III(n,f,r) \ MAKE_INTRINSIC_3(n,f,r,SLANG_INT_TYPE,SLANG_INT_TYPE,SLANG_INT_TYPE) #define MAKE_INTRINSIC(n, f, out, in) \ MAKE_INTRINSIC_N(n,f,out,in,0,0,0,0,0,0,0) #define MAKE_VARIABLE(n, v, t, r) \ {n, NULL, SLANG_IVARIABLE + (r), (VOID_STAR)(v), (t)} #define MAKE_APP_UNARY(n,op) \ {(n), NULL, SLANG_APP_UNARY, (op)} #define MAKE_MATH_UNARY(n,op) \ {(n), NULL, SLANG_MATH_UNARY, (op)} #define MAKE_ICONSTANT(n,val) \ {(n),NULL, SLANG_ICONSTANT, (val)} #define MAKE_DCONSTANT(n,val) \ {(n),NULL, SLANG_DCONSTANT, (val)} #ifndef offsetof # define offsetof(T,F) ((unsigned int)((char *)&((T *)0L)->F - (char *)0L)) #endif #define MAKE_ISTRUCT_FIELD(s,f,n,t,r) {(n), offsetof(s,f), (t), (r)} #define MAKE_CSTRUCT_FIELD(s,f,n,t,r) {(n), offsetof(s,f), (t), (r)} #define MAKE_CSTRUCT_INT_FIELD(s,f,n,r) {(n), offsetof(s,f),\ (sizeof(((s*)0L)->f)==sizeof(int))?(SLANG_INT_TYPE): \ (sizeof(((s*)0L)->f)==sizeof(short))?(SLANG_SHORT_TYPE): \ (sizeof(((s*)0L)->f)==sizeof(char))?(SLANG_CHAR_TYPE): \ SLANG_LONG_TYPE, (r)\ } #define SLANG_END_TABLE {NULL} #define SLANG_END_INTRIN_FUN_TABLE MAKE_INTRINSIC_0(NULL,NULL,0) #define SLANG_END_DCONST_TABLE MAKE_DCONSTANT(NULL,0) #define SLANG_END_MATH_UNARY_TABLE MAKE_MATH_UNARY(NULL,0) #define SLANG_END_INTRIN_VAR_TABLE MAKE_VARIABLE(NULL,NULL,0,0) #define SLANG_END_ICONST_TABLE MAKE_ICONSTANT(NULL,0) #define SLANG_END_ISTRUCT_TABLE {NULL, 0, 0, 0} #define SLANG_END_CSTRUCT_TABLE {NULL, 0, 0, 0} /*}}}*/ /*{{{ Upper/Lowercase Functions */ extern void SLang_define_case(int *, int *); extern void SLang_init_case_tables (void); extern unsigned char _SLChg_UCase_Lut[256]; extern unsigned char _SLChg_LCase_Lut[256]; #define UPPER_CASE(x) (_SLChg_UCase_Lut[(unsigned char) (x)]) #define LOWER_CASE(x) (_SLChg_LCase_Lut[(unsigned char) (x)]) #define CHANGE_CASE(x) (((x) == _SLChg_LCase_Lut[(unsigned char) (x)]) ?\ _SLChg_UCase_Lut[(unsigned char) (x)] : _SLChg_LCase_Lut[(unsigned char) (x)]) /*}}}*/ /*{{{ Regular Expression Interface */ typedef struct { /* These must be set by calling routine. */ unsigned char *pat; /* regular expression pattern */ unsigned char *buf; /* buffer for compiled regexp */ unsigned int buf_len; /* length of buffer */ int case_sensitive; /* 1 if match is case sensitive */ /* The rest are set by SLang_regexp_compile */ int must_match; /* 1 if line must contain substring */ int must_match_bol; /* true if it must match beginning of line */ unsigned char must_match_str[16]; /* 15 char null term substring */ int osearch; /* 1 if ordinary search suffices */ unsigned int min_length; /* minimum length the match must be */ int beg_matches[10]; /* offset of start of \( */ unsigned int end_matches[10]; /* length of nth submatch * Note that the entire match corresponds * to \0 */ int offset; /* offset to be added to beg_matches */ int reserved[10]; } SLRegexp_Type; extern unsigned char *SLang_regexp_match(unsigned char *, unsigned int, SLRegexp_Type *); /* Returns 0 upon success. If failure, the offset into the * pattern is returned (start = 1). */ extern int SLang_regexp_compile (SLRegexp_Type *); extern char *SLregexp_quote_string (char *, char *, unsigned int); /*}}}*/ /*{{{ SLang Command Interface */ struct _SLcmd_Cmd_Type; /* Pre-declaration is needed below */ typedef struct { struct _SLcmd_Cmd_Type *table; int argc; /* Version 2.0 needs to use a union!! */ char **string_args; int *int_args; double *double_args; unsigned char *arg_type; unsigned long reserved[4]; } SLcmd_Cmd_Table_Type; typedef struct _SLcmd_Cmd_Type { int (*cmdfun)(int, SLcmd_Cmd_Table_Type *); char *cmd; char *arg_type; } SLcmd_Cmd_Type; extern int SLcmd_execute_string (char *, SLcmd_Cmd_Table_Type *); /*}}}*/ /*{{{ SLang Search Interface */ typedef struct { int cs; /* case sensitive */ unsigned char key[256]; int ind[256]; int key_len; int dir; } SLsearch_Type; extern int SLsearch_init (char *, int, int, SLsearch_Type *); /* This routine must first be called before any search can take place. * The second parameter specifies the direction of the search: greater than * zero for a forwrd search and less than zero for a backward search. The * third parameter specifies whether the search is case sensitive or not. * The last parameter is a pointer to a structure that is filled by this * function and it is this structure that must be passed to SLsearch. */ extern unsigned char *SLsearch (unsigned char *, unsigned char *, SLsearch_Type *); /* To use this routine, you must first call 'SLsearch_init'. Then the first * two parameters p1 and p2 serve to define the region over which the search * is to take place. The third parameter is the structure that was previously * initialized by SLsearch_init. * * The routine returns a pointer to the match if found otherwise it returns * NULL. */ /*}}}*/ /*{{{ SLang Pathname Interface */ /* These function return pointers to the original space */ extern char *SLpath_basename (char *); extern char *SLpath_extname (char *); extern int SLpath_is_absolute_path (char *); /* Get and set the character delimiter for search paths */ extern int SLpath_get_delimiter (void); extern int SLpath_set_delimiter (int); /* search path for loading .sl files */ extern int SLpath_set_load_path (char *); /* search path for loading .sl files --- returns slstring */ extern char *SLpath_get_load_path (void); /* These return malloced strings--- NOT slstrings */ extern char *SLpath_dircat (char *, char *); extern char *SLpath_find_file_in_path (char *, char *); extern char *SLpath_dirname (char *); extern int SLpath_file_exists (char *); extern char *SLpath_pathname_sans_extname (char *); /*}}}*/ extern int SLang_set_module_load_path (char *); #define SLANG_MODULE(name) \ extern int init_##name##_module_ns (char *); \ extern void deinit_##name##_module (void) #if 0 { #endif #ifdef __cplusplus } #endif #endif /* _DAVIS_SLANG_H_ */