+added support for user customized routine by DEF/ENDDEF
This commit is contained in:
tony
parent
70ad07cc88
commit
1c1771280c
7
HISTORY
7
HISTORY
@ -1,3 +1,6 @@
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Sep. 1 2015
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Added support for user customized routine by DEF/ENDDEF
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Aug. 26 2015
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Added a memory pool to interpreter shell in main.c
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@ -203,12 +206,12 @@ Apr. 15 2011
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Fixed garbage collection and _label_t disposing bugs
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Apr. 14 2011
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Fixed some list / comparison operator bugs
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Fixed some list/comparison operator bugs
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Feb. 15 2011
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Improved portability on Cocoa
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Improved portability on VC++ 6.0
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Fixed a suspend / resume bug
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Fixed a suspend/resume bug
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Feb. 9 2011
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Fixed struct mb_interpreter_t declaration warnings on gcc
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@ -6,7 +6,7 @@ Copyright (C) 2011 - 2015 [Wang Renxin](https://twitter.com/wangrenxin)
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## Introduction
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MY-BASIC is a tiny cross-platform easy extendable BASIC interpreter written in pure C with about 6000 lines of source code. Its grammar is similar to structured BASIC in early era, but without line number. It is aimed to be either an embeddable scripting language or a standalone interpreter. The core is pretty light; all in a C source file and an associated header file. You can combine MY-BASIC with an existing C, C++, Objective-C, etc. project easily, scripting driven can make your projects more powerful, elegant and neat.
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MY-BASIC is a tiny cross-platform easy extendable BASIC interpreter written in pure C with about 7000 lines of source code. Its grammar is similar to structured BASIC in early era, but without line number. It is aimed to be either an embeddable scripting language or a standalone interpreter. The core is pretty light; all in a C source file and an associated header file. You can combine MY-BASIC with an existing C, C++, Objective-C, etc. project easily, scripting driven can make your projects more powerful, elegant and neat.
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## Main features
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561
core/my_basic.c
561
core/my_basic.c
@ -78,7 +78,7 @@ extern "C" {
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/** Macros */
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#define _VER_MAJOR 1
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#define _VER_MINOR 1
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#define _VER_REVISION 64
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#define _VER_REVISION 65
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#define _MB_VERSION ((_VER_MAJOR * 0x01000000) + (_VER_MINOR * 0x00010000) + (_VER_REVISION))
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/* Uncomment this line to treat warnings as error */
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@ -111,8 +111,10 @@ extern "C" {
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#define _IS_EOS(__o) (__o && ((_object_t*)(__o))->type == _DT_EOS)
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#define _IS_SEP(__o, __c) (((_object_t*)(__o))->type == _DT_SEP && ((_object_t*)(__o))->data.separator == __c)
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#define _IS_FUNC(__o, __f) (((_object_t*)(__o))->type == _DT_FUNC && ((_object_t*)(__o))->data.func->pointer == __f)
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#define _IS_ROUTINE(__o) (__o && ((_object_t*)(__o))->type == _DT_ROUTINE)
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/* Hash table size */
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#define _HT_ARRAY_SIZE_TINY 1
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#define _HT_ARRAY_SIZE_SMALL 193
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#define _HT_ARRAY_SIZE_MID 1543
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#define _HT_ARRAY_SIZE_BIG 12289
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@ -205,6 +207,8 @@ static const char* _ERR_DESC[] = {
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"MOD by zero",
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"Invalid expression",
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"Out of memory",
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"Don't suspend in a routine",
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"Routine expected",
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/** Extended abort */
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"Extended abort"
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};
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@ -224,7 +228,7 @@ typedef enum _data_e {
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_DT_ARRAY,
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_DT_LABEL, /* Label type, used for GOTO, GOSUB statement */
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_DT_ROUTINE, /* User defined sub routine in script */
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_DT_PROTOTYPE, /* Object prototype */
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_DT_CLASS, /* Object instance */
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_DT_SEP, /* Separator */
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_DT_EOS /* End of statement */
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} _data_e;
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@ -256,18 +260,18 @@ typedef struct _label_t {
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_ls_node_t* node;
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} _label_t;
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typedef struct _obj_t {
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typedef struct _class_t {
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char* name;
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struct _running_context_t* scope;
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} _obj_t;
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} _class_t;
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typedef struct _routing_t {
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typedef struct _routine_t {
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char* name;
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_obj_t* obj;
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_class_t* instance;
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struct _running_context_t* scope;
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_ls_node_t* entry;
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_ls_node_t* parameters;
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} _routing_t;
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} _routine_t;
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typedef union _raw_u { int_t i; real_t r; void* p; } _raw_u;
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@ -284,8 +288,8 @@ typedef struct _object_t {
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_var_t* variable;
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_array_t* array;
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_label_t* label;
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_routing_t* routine;
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_obj_t* prototype;
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_routine_t* routine;
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_class_t* instance;
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char separator;
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_raw_t raw;
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} data;
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@ -311,6 +315,8 @@ const size_t MB_SIZEOF_FUN = _MB_MEM_TAG_SIZE + sizeof(_func_t);
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const size_t MB_SIZEOF_ARR = _MB_MEM_TAG_SIZE + sizeof(_array_t);
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const size_t MB_SIZEOF_VAR = _MB_MEM_TAG_SIZE + sizeof(_var_t);
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const size_t MB_SIZEOF_LBL = _MB_MEM_TAG_SIZE + sizeof(_label_t);
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const size_t MB_SIZEOF_RTN = _MB_MEM_TAG_SIZE + sizeof(_routine_t);
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const size_t MB_SIZEOF_CLS = _MB_MEM_TAG_SIZE + sizeof(_class_t);
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#else /* MB_ENABLE_ALLOC_STAT */
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const size_t MB_SIZEOF_INT = sizeof(int);
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const size_t MB_SIZEOF_PTR = sizeof(intptr_t);
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@ -321,6 +327,8 @@ const size_t MB_SIZEOF_FUN = sizeof(_func_t);
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const size_t MB_SIZEOF_ARR = sizeof(_array_t);
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const size_t MB_SIZEOF_VAR = sizeof(_var_t);
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const size_t MB_SIZEOF_LBL = sizeof(_label_t);
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const size_t MB_SIZEOF_RTN = sizeof(_routine_t);
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const size_t MB_SIZEOF_CLS = sizeof(_class_t);
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#endif /* MB_ENABLE_ALLOC_STAT */
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#ifdef MB_ENABLE_SOURCE_TRACE
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@ -362,11 +370,8 @@ typedef struct _parsing_context_t {
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/* Running context */
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typedef struct _running_context_t {
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struct _running_context_t* prev;
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_ht_node_t* var_dict;
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_ls_node_t* temp_values;
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_ls_node_t* suspent_point;
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int schedule_suspend_tag;
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_ls_node_t* sub_stack;
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_var_t* next_loop_var;
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mb_value_t intermediate_value;
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} _running_context_t;
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@ -385,7 +390,10 @@ typedef struct mb_interpreter_t {
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_ls_node_t* ast;
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_parsing_context_t* parsing_context;
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_running_context_t* running_context;
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_running_context_t* scope_context;
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_ls_node_t* sub_stack;
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_ls_node_t* temp_values;
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_ls_node_t* suspent_point;
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int schedule_suspend_tag;
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int_t no_eat_comma_mark;
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_ls_node_t* skip_to_eoi;
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_ls_node_t* in_neg_expr;
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@ -660,6 +668,7 @@ static int _get_priority_index(mb_func_t op);
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static _object_t* _operate_operand(mb_interpreter_t* s, _object_t* optr, _object_t* opnd1, _object_t* opnd2, int* status);
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static bool_t _is_expression_terminal(mb_interpreter_t* s, _object_t* obj);
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static int _calc_expression(mb_interpreter_t* s, _ls_node_t** l, _object_t** val);
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static int _eval_routine(mb_interpreter_t* s, _ls_node_t** l, _routine_t* r);
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static bool_t _is_print_terminal(mb_interpreter_t* s, _object_t* obj);
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/** Others */
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@ -735,6 +744,10 @@ static bool_t _is_array(void* obj);
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static bool_t _is_string(void* obj);
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static char* _extract_string(_object_t* obj);
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static bool_t _is_internal_object(_object_t* obj);
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static void _init_instance(mb_interpreter_t* s, _class_t* instance, char* n);
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static void _init_routine(mb_interpreter_t* s, _routine_t* routine, char* n);
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static void _end_of_scope(mb_interpreter_t* s);
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static _ls_node_t* _search_var_in_scope_chain(mb_interpreter_t* s, char* n);
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static int _dispose_object(_object_t* obj);
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static int _destroy_object(void* data, void* extra);
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static int _destroy_object_non_syntax(void* data, void* extra);
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@ -753,6 +766,8 @@ static int _skip_if_chunk(mb_interpreter_t* s, _ls_node_t** l);
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static int _skip_struct(mb_interpreter_t* s, _ls_node_t** l, mb_func_t open_func, mb_func_t close_func);
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static _parsing_context_t* _reset_parsing_context(_parsing_context_t* context);
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static int _clear_scope_chain(mb_interpreter_t* s);
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static int _dispose_scope_chain(mb_interpreter_t* s);
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static int _register_func(mb_interpreter_t* s, const char* n, mb_func_t f, bool_t local);
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static int _remove_func(mb_interpreter_t* s, const char* n, bool_t local);
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@ -829,8 +844,8 @@ static int _core_call(mb_interpreter_t* s, void** l);
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static int _core_var(mb_interpreter_t* s, void** l);
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static int _core_def(mb_interpreter_t* s, void** l);
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static int _core_enddef(mb_interpreter_t* s, void** l);
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static int _core_obj(mb_interpreter_t* s, void** l);
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static int _core_endobj(mb_interpreter_t* s, void** l);
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static int _core_class(mb_interpreter_t* s, void** l);
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static int _core_endclass(mb_interpreter_t* s, void** l);
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#ifdef MB_ENABLE_ALLOC_STAT
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static int _core_mem(mb_interpreter_t* s, void** l);
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#endif /* MB_ENABLE_ALLOC_STAT */
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@ -915,8 +930,8 @@ static const _func_t _core_libs[] = {
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{ "VAR", _core_var },
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{ "DEF", _core_def },
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{ "ENDDEF", _core_enddef },
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{ "OBJ", _core_obj },
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{ "ENDOBJ", _core_endobj },
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{ "CLASS", _core_class },
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{ "ENDCLASS", _core_endclass },
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#ifdef MB_ENABLE_ALLOC_STAT
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{ "MEM", _core_mem },
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@ -1712,6 +1727,24 @@ int _calc_expression(mb_interpreter_t* s, _ls_node_t** l, _object_t** val) {
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}
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_ls_pushback(opnd, c);
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f++;
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} else if(c->type == _DT_ROUTINE) {
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ast = ast->prev;
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result = _eval_routine(s, &ast, c->data.routine);
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ast = ast->prev;
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if(result != MB_FUNC_OK) {
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_handle_error_on_obj(s, SE_RN_CALCULATION_ERROR, DON(ast), MB_FUNC_ERR, _exit, result);
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}
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c = (_object_t*)mb_malloc(sizeof(_object_t));
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memset(c, 0, sizeof(_object_t));
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_ls_pushback(garbage, c);
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result = _public_value_to_internal_object(&running->intermediate_value, c);
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if(result != MB_FUNC_OK)
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goto _exit;
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if(f) {
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_handle_error_on_obj(s, SE_RN_OPERATOR_EXPECTED, DON(ast), MB_FUNC_ERR, _exit, result);
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}
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_ls_pushback(opnd, c);
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f++;
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} else if(c->type == _DT_VAR && c->data.variable->data->type == _DT_ARRAY) {
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ast = ast->prev;
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result = _get_array_index(s, &ast, &arr_idx);
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@ -1851,6 +1884,85 @@ _exit:
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return result;
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}
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int _eval_routine(mb_interpreter_t* s, _ls_node_t** l, _routine_t* r) {
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/* Evaluate a routine */
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int result = MB_FUNC_OK;
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_ls_node_t* ast = 0;
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mb_value_t arg;
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_ls_node_t* pars = 0;
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_var_t* var = 0;
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_running_context_t* running = 0;
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mb_assert(s && l && r);
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running = s->running_context;
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mb_check(mb_attempt_open_bracket(s, (void**)l));
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pars = r->parameters;
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if(pars) {
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pars = pars->next;
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while(pars) {
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mb_check(mb_pop_value(s, (void**)l, &arg));
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var = (_var_t*)(pars->data);
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pars = pars->next;
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result = _public_value_to_internal_object(&arg, var->data);
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if(result != MB_FUNC_OK)
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goto _exit;
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}
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}
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mb_check(mb_attempt_close_bracket(s, (void**)l));
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ast = (_ls_node_t*)(*l);
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_ls_pushback(s->sub_stack, ast);
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r->scope->prev = s->running_context;
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running = s->running_context = r->scope;
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*l = r->entry;
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do {
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result = _execute_statement(s, l);
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if(result == MB_SUB_RETURN) {
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result = MB_FUNC_OK;
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break;
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}
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if(result == MB_FUNC_SUSPEND && s->error_handler) {
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s->last_error = SE_RN_DONT_SUSPEND_IN_A_ROUTINE;
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(s->error_handler)(s, s->last_error, (char*)mb_get_error_desc(s->last_error),
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s->last_error_pos,
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s->last_error_row,
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s->last_error_col,
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result);
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goto _exit;
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}
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if(result != MB_FUNC_OK && s->error_handler) {
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if(result >= MB_EXTENDED_ABORT)
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s->last_error = SE_EA_EXTENDED_ABORT;
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(s->error_handler)(s, s->last_error, (char*)mb_get_error_desc(s->last_error),
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s->last_error_pos,
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s->last_error_row,
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s->last_error_col,
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result);
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goto _exit;
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}
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} while(ast);
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s->running_context = running->prev;
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running->prev = 0;
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s->running_context->intermediate_value = running->intermediate_value;
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_exit:
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return result;
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}
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bool_t _is_print_terminal(mb_interpreter_t* s, _object_t* obj) {
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/* Determine whether an object is a PRINT termination */
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bool_t result = false;
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@ -2034,7 +2146,7 @@ int _create_symbol(mb_interpreter_t* s, _ls_node_t* l, char* sym, _object_t** ob
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/* Create a syntax symbol */
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int result = MB_FUNC_OK;
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_data_e type;
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union { _func_t* func; _array_t* array; _var_t* var; _label_t* label; real_t float_point; int_t integer; _raw_t any; } tmp;
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union { _func_t* func; _array_t* array; _class_t* instance; _routine_t* routine; _var_t* var; _label_t* label; real_t float_point; int_t integer; _raw_t any; } tmp;
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_raw_t value;
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unsigned int ul = 0;
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_parsing_context_t* context = 0;
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@ -2097,7 +2209,7 @@ int _create_symbol(mb_interpreter_t* s, _ls_node_t* l, char* sym, _object_t** ob
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break;
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case _DT_ARRAY:
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glbsyminscope = _ht_find(running->var_dict, sym);
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glbsyminscope = _search_var_in_scope_chain(s, sym);
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if(glbsyminscope && ((_object_t*)(glbsyminscope->data))->type == _DT_ARRAY) {
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(*obj)->data.array = ((_object_t*)(glbsyminscope->data))->data.array;
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(*obj)->ref = true;
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@ -2119,9 +2231,53 @@ int _create_symbol(mb_interpreter_t* s, _ls_node_t* l, char* sym, _object_t** ob
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(*obj)->ref = true;
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}
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break;
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case _DT_CLASS:
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glbsyminscope = _search_var_in_scope_chain(s, sym);
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if(glbsyminscope && ((_object_t*)(glbsyminscope->data))->type == _DT_CLASS) {
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(*obj)->data.instance = ((_object_t*)(glbsyminscope->data))->data.instance;
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(*obj)->ref = true;
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*delsym = true;
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} else {
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tmp.instance = (_class_t*)mb_malloc(sizeof(_class_t));
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_init_instance(s, tmp.instance, sym);
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(*obj)->data.instance = tmp.instance;
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ul = _ht_set_or_insert(running->var_dict, sym, *obj);
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mb_assert(ul);
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*obj = (_object_t*)mb_malloc(sizeof(_object_t));
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memset(*obj, 0, sizeof(_object_t));
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(*obj)->type = type;
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(*obj)->data.instance = tmp.instance;
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(*obj)->ref = true;
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}
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break;
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case _DT_ROUTINE:
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glbsyminscope = _search_var_in_scope_chain(s, sym);
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if(glbsyminscope && ((_object_t*)(glbsyminscope->data))->type == _DT_ROUTINE) {
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(*obj)->data.routine = ((_object_t*)(glbsyminscope->data))->data.routine;
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(*obj)->ref = true;
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*delsym = true;
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} else {
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tmp.routine = (_routine_t*)mb_malloc(sizeof(_routine_t));
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_init_routine(s, tmp.routine, sym);
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(*obj)->data.routine = tmp.routine;
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ul = _ht_set_or_insert(running->var_dict, sym, *obj);
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mb_assert(ul);
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*obj = (_object_t*)mb_malloc(sizeof(_object_t));
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memset(*obj, 0, sizeof(_object_t));
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(*obj)->type = type;
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(*obj)->data.routine = tmp.routine;
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(*obj)->ref = true;
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}
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break;
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case _DT_VAR:
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glbsyminscope = _ht_find(running->var_dict, sym);
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glbsyminscope = _search_var_in_scope_chain(s, sym);
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if(glbsyminscope && ((_object_t*)(glbsyminscope->data))->type == _DT_VAR) {
|
||||
(*obj)->data.variable = ((_object_t*)(glbsyminscope->data))->data.variable;
|
||||
(*obj)->ref = true;
|
||||
@ -2237,7 +2393,7 @@ _data_e _get_symbol_type(mb_interpreter_t* s, char* sym, _raw_t* value) {
|
||||
goto _exit;
|
||||
}
|
||||
/* _array_t */
|
||||
glbsyminscope = _ht_find(running->var_dict, sym);
|
||||
glbsyminscope = _search_var_in_scope_chain(s, sym);
|
||||
if(glbsyminscope && ((_object_t*)(glbsyminscope->data))->type == _DT_ARRAY) {
|
||||
tmp.obj = (_object_t*)(glbsyminscope->data);
|
||||
memcpy(*value, &(tmp.obj->data.array->type), sizeof(tmp.obj->data.array->type));
|
||||
@ -2247,7 +2403,7 @@ _data_e _get_symbol_type(mb_interpreter_t* s, char* sym, _raw_t* value) {
|
||||
goto _exit;
|
||||
}
|
||||
if(context->last_symbol && context->last_symbol->type == _DT_FUNC) {
|
||||
if(strcmp("DIM", context->last_symbol->data.func->name) == 0) {
|
||||
if(context->last_symbol->data.func->pointer == _core_dim) {
|
||||
#ifdef MB_SIMPLE_ARRAY
|
||||
en = (sym[_sl - 1] == '$' ? _DT_STRING : _DT_REAL);
|
||||
#else /* MB_SIMPLE_ARRAY */
|
||||
@ -2260,6 +2416,60 @@ _data_e _get_symbol_type(mb_interpreter_t* s, char* sym, _raw_t* value) {
|
||||
goto _exit;
|
||||
}
|
||||
}
|
||||
/* _class_t */
|
||||
if(context->last_symbol && context->last_symbol->type == _DT_FUNC) {
|
||||
if(context->last_symbol->data.func->pointer == _core_class) {
|
||||
glbsyminscope = _search_var_in_scope_chain(s, sym);
|
||||
if(glbsyminscope && ((_object_t*)(glbsyminscope->data))->type == _DT_VAR) {
|
||||
tmp.obj = (_object_t*)(glbsyminscope->data);
|
||||
if(!tmp.obj->ref) {
|
||||
_ht_remove(running->var_dict, sym, _ls_cmp_extra_string);
|
||||
_dispose_object(tmp.obj);
|
||||
}
|
||||
tmp.obj->type = _DT_CLASS;
|
||||
tmp.obj->data.instance = (_class_t*)mb_malloc(sizeof(_class_t));
|
||||
_init_instance(s, tmp.obj->data.instance, sym);
|
||||
_ht_set_or_insert(running->var_dict, sym, tmp.obj);
|
||||
}
|
||||
|
||||
result = _DT_CLASS;
|
||||
|
||||
goto _exit;
|
||||
}
|
||||
}
|
||||
/* _routine_t */
|
||||
if(context->last_symbol && context->last_symbol->type == _DT_FUNC) {
|
||||
glbsyminscope = _search_var_in_scope_chain(s, sym);
|
||||
if(glbsyminscope && ((_object_t*)glbsyminscope->data)->type == _DT_ROUTINE) {
|
||||
result = _DT_ROUTINE;
|
||||
|
||||
goto _exit;
|
||||
}
|
||||
if(context->last_symbol->data.func->pointer == _core_def || context->last_symbol->data.func->pointer == _core_call) {
|
||||
if(!_is_identifier_char(sym[0])) {
|
||||
result = _DT_NIL;
|
||||
|
||||
goto _exit;
|
||||
}
|
||||
if(glbsyminscope && ((_object_t*)(glbsyminscope->data))->type == _DT_VAR) {
|
||||
tmp.obj = (_object_t*)(glbsyminscope->data);
|
||||
if(!tmp.obj->ref) {
|
||||
_ht_remove(running->var_dict, sym, _ls_cmp_extra_string);
|
||||
_dispose_object(tmp.obj);
|
||||
}
|
||||
tmp.obj->type = _DT_ROUTINE;
|
||||
tmp.obj->data.routine = (_routine_t*)mb_malloc(sizeof(_routine_t));
|
||||
_init_routine(s, tmp.obj->data.routine, sym);
|
||||
_ht_set_or_insert(running->var_dict, sym, tmp.obj);
|
||||
}
|
||||
|
||||
result = _DT_ROUTINE;
|
||||
|
||||
goto _exit;
|
||||
} else if(context->last_symbol->data.func->pointer == _core_enddef) {
|
||||
_end_of_scope(s);
|
||||
}
|
||||
}
|
||||
/* _func_t */
|
||||
if(!context->last_symbol ||
|
||||
(context->last_symbol && ((context->last_symbol->type == _DT_FUNC && context->last_symbol->data.func->pointer != _core_close_bracket) ||
|
||||
@ -2299,7 +2509,7 @@ _data_e _get_symbol_type(mb_interpreter_t* s, char* sym, _raw_t* value) {
|
||||
goto _exit;
|
||||
}
|
||||
/* _var_t */
|
||||
glbsyminscope = _ht_find(running->var_dict, sym);
|
||||
glbsyminscope = _search_var_in_scope_chain(s, sym);
|
||||
if(glbsyminscope) {
|
||||
if(((_object_t*)glbsyminscope->data)->type != _DT_LABEL) {
|
||||
memcpy(*value, &glbsyminscope->data, sizeof(glbsyminscope->data));
|
||||
@ -2312,7 +2522,7 @@ _data_e _get_symbol_type(mb_interpreter_t* s, char* sym, _raw_t* value) {
|
||||
/* _label_t */
|
||||
if(context->current_char == ':') {
|
||||
if(!context->last_symbol || _IS_EOS(context->last_symbol)) {
|
||||
glbsyminscope = _ht_find(running->var_dict, sym);
|
||||
glbsyminscope = _search_var_in_scope_chain(s, sym);
|
||||
if(glbsyminscope) {
|
||||
memcpy(*value, &glbsyminscope->data, sizeof(glbsyminscope->data));
|
||||
}
|
||||
@ -2822,6 +3032,61 @@ bool_t _is_internal_object(_object_t* obj) {
|
||||
return result;
|
||||
}
|
||||
|
||||
void _init_instance(mb_interpreter_t* s, _class_t* instance, char* n) {
|
||||
/* Initialize an instance */
|
||||
mb_assert(s && instance && n);
|
||||
|
||||
memset(instance, 0, sizeof(_class_t));
|
||||
instance->name = n;
|
||||
instance->scope = (_running_context_t*)mb_malloc(sizeof(_running_context_t));
|
||||
memset(instance->scope, 0, sizeof(_running_context_t));
|
||||
}
|
||||
|
||||
void _init_routine(mb_interpreter_t* s, _routine_t* routine, char* n) {
|
||||
/* Initialize a routine */
|
||||
_running_context_t* running = 0;
|
||||
|
||||
mb_assert(s && routine && n);
|
||||
|
||||
running = s->running_context;
|
||||
|
||||
memset(routine, 0, sizeof(_routine_t));
|
||||
routine->name = n;
|
||||
routine->scope = (_running_context_t*)mb_malloc(sizeof(_running_context_t));
|
||||
memset(routine->scope, 0, sizeof(_running_context_t));
|
||||
routine->scope->var_dict = _ht_create(0, _ht_cmp_string, _ht_hash_string, 0);
|
||||
|
||||
routine->scope->prev = running;
|
||||
s->running_context = routine->scope;
|
||||
}
|
||||
|
||||
void _end_of_scope(mb_interpreter_t* s) {
|
||||
/* Finish encapsule a scope */
|
||||
_running_context_t* running = 0;
|
||||
|
||||
mb_assert(s);
|
||||
|
||||
running = s->running_context;
|
||||
s->running_context = running->prev;
|
||||
running->prev = 0;
|
||||
}
|
||||
|
||||
_ls_node_t* _search_var_in_scope_chain(mb_interpreter_t* s, char* n) {
|
||||
/* Try to search a variable in a scope chain */
|
||||
_ls_node_t* result = 0;
|
||||
_running_context_t* running = 0;
|
||||
|
||||
mb_assert(s && n);
|
||||
|
||||
running = s->running_context;
|
||||
while(running && !result) {
|
||||
result = _ht_find(running->var_dict, n);
|
||||
running = running->prev;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
int _dispose_object(_object_t* obj) {
|
||||
/* Dispose a syntax object */
|
||||
int result = 0;
|
||||
@ -2866,8 +3131,28 @@ int _dispose_object(_object_t* obj) {
|
||||
safe_free(obj->data.label);
|
||||
}
|
||||
|
||||
break;
|
||||
case _DT_ROUTINE:
|
||||
if(!obj->ref) {
|
||||
safe_free(obj->data.routine->name);
|
||||
_ht_foreach(obj->data.routine->scope->var_dict, _destroy_object);
|
||||
_ht_destroy(obj->data.routine->scope->var_dict);
|
||||
safe_free(obj->data.routine->scope);
|
||||
if(obj->data.routine->parameters)
|
||||
_ls_destroy(obj->data.routine->parameters);
|
||||
safe_free(obj->data.routine);
|
||||
}
|
||||
|
||||
break;
|
||||
case _DT_CLASS:
|
||||
if(!obj->ref) {
|
||||
safe_free(obj->data.instance->scope);
|
||||
safe_free(obj->data.instance);
|
||||
}
|
||||
|
||||
break;
|
||||
case _DT_NIL: /* Fall through */
|
||||
case _DT_ANY: /* Fall through */
|
||||
case _DT_INT: /* Fall through */
|
||||
case _DT_REAL: /* Fall through */
|
||||
case _DT_SEP: /* Fall through */
|
||||
@ -3159,11 +3444,11 @@ int _execute_statement(mb_interpreter_t* s, _ls_node_t** l) {
|
||||
break;
|
||||
}
|
||||
|
||||
if(running->schedule_suspend_tag) {
|
||||
if(running->schedule_suspend_tag == MB_FUNC_SUSPEND)
|
||||
if(s->schedule_suspend_tag) {
|
||||
if(s->schedule_suspend_tag == MB_FUNC_SUSPEND)
|
||||
mb_suspend(s, (void**)(&ast));
|
||||
result = running->schedule_suspend_tag;
|
||||
running->schedule_suspend_tag = 0;
|
||||
result = s->schedule_suspend_tag;
|
||||
s->schedule_suspend_tag = 0;
|
||||
}
|
||||
|
||||
if(result != MB_FUNC_OK && result != MB_FUNC_SUSPEND && result != MB_SUB_RETURN)
|
||||
@ -3185,7 +3470,7 @@ int _execute_statement(mb_interpreter_t* s, _ls_node_t** l) {
|
||||
}
|
||||
}
|
||||
|
||||
if(skip_to_eoi && s->skip_to_eoi && s->skip_to_eoi == _ls_back(running->sub_stack)) {
|
||||
if(skip_to_eoi && s->skip_to_eoi && s->skip_to_eoi == _ls_back(s->sub_stack)) {
|
||||
s->skip_to_eoi = 0;
|
||||
obj = (_object_t*)(ast->data);
|
||||
if(obj->type != _DT_EOS) {
|
||||
@ -3295,6 +3580,57 @@ _parsing_context_t* _reset_parsing_context(_parsing_context_t* context) {
|
||||
return context;
|
||||
}
|
||||
|
||||
int _clear_scope_chain(mb_interpreter_t* s) {
|
||||
/* Clear a scope chain */
|
||||
int result = 0;
|
||||
_running_context_t* running = 0;
|
||||
_running_context_t* prev = 0;
|
||||
_ht_node_t* global_scope = 0;
|
||||
|
||||
mb_assert(s);
|
||||
|
||||
running = s->running_context;
|
||||
while(running) {
|
||||
prev = running->prev;
|
||||
|
||||
global_scope = running->var_dict;
|
||||
_ht_foreach(global_scope, _destroy_object);
|
||||
_ht_clear(global_scope);
|
||||
|
||||
result++;
|
||||
running = prev;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
int _dispose_scope_chain(mb_interpreter_t* s) {
|
||||
/* Dispose a scope chain */
|
||||
int result = 0;
|
||||
_running_context_t* running = 0;
|
||||
_running_context_t* prev = 0;
|
||||
_ht_node_t* global_scope = 0;
|
||||
|
||||
mb_assert(s);
|
||||
|
||||
running = s->running_context;
|
||||
while(running) {
|
||||
prev = running->prev;
|
||||
|
||||
global_scope = running->var_dict;
|
||||
_ht_foreach(global_scope, _destroy_object);
|
||||
_ht_clear(global_scope);
|
||||
_ht_destroy(global_scope);
|
||||
mb_dispose_value(s, running->intermediate_value);
|
||||
safe_free(running);
|
||||
|
||||
result++;
|
||||
running = prev;
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
int _register_func(mb_interpreter_t* s, const char* n, mb_func_t f, bool_t local) {
|
||||
/* Register a function to a MY-BASIC environment */
|
||||
int result = 0;
|
||||
@ -3537,7 +3873,6 @@ int mb_open(struct mb_interpreter_t** s) {
|
||||
int result = MB_FUNC_OK;
|
||||
_ht_node_t* local_scope = 0;
|
||||
_ht_node_t* global_scope = 0;
|
||||
_ls_node_t* ast = 0;
|
||||
_parsing_context_t* context = 0;
|
||||
_running_context_t* running = 0;
|
||||
|
||||
@ -3554,18 +3889,17 @@ int mb_open(struct mb_interpreter_t** s) {
|
||||
|
||||
(*s)->parsing_context = context = _reset_parsing_context((*s)->parsing_context);
|
||||
|
||||
(*s)->temp_values = _ls_create();
|
||||
|
||||
running = (_running_context_t*)mb_malloc(sizeof(_running_context_t));
|
||||
memset(running, 0, sizeof(_running_context_t));
|
||||
|
||||
running->temp_values = _ls_create();
|
||||
running->sub_stack = _ls_create();
|
||||
(*s)->running_context = running;
|
||||
|
||||
global_scope = _ht_create(0, _ht_cmp_string, _ht_hash_string, 0);
|
||||
running->var_dict = global_scope;
|
||||
|
||||
ast = _ls_create();
|
||||
(*s)->ast = ast;
|
||||
(*s)->sub_stack = _ls_create();
|
||||
|
||||
(*s)->ast = _ls_create();
|
||||
|
||||
_open_core_lib(*s);
|
||||
_open_std_lib(*s);
|
||||
@ -3583,12 +3917,10 @@ int mb_close(struct mb_interpreter_t** s) {
|
||||
_ht_node_t* global_scope = 0;
|
||||
_ls_node_t* ast;
|
||||
_parsing_context_t* context = 0;
|
||||
_running_context_t* running = 0;
|
||||
|
||||
mb_assert(s);
|
||||
|
||||
context = (*s)->parsing_context;
|
||||
running = (*s)->running_context;
|
||||
|
||||
_close_std_lib(*s);
|
||||
_close_core_lib(*s);
|
||||
@ -3597,16 +3929,12 @@ int mb_close(struct mb_interpreter_t** s) {
|
||||
_ls_foreach(ast, _destroy_object);
|
||||
_ls_destroy(ast);
|
||||
|
||||
global_scope = running->var_dict;
|
||||
_ht_foreach(global_scope, _destroy_object);
|
||||
_ht_destroy(global_scope);
|
||||
_ls_destroy((*s)->sub_stack);
|
||||
|
||||
mb_dispose_value(*s, running->intermediate_value);
|
||||
_ls_destroy(running->sub_stack);
|
||||
_ls_foreach(running->temp_values, _destroy_object);
|
||||
_ls_destroy(running->temp_values);
|
||||
_dispose_scope_chain(*s);
|
||||
|
||||
safe_free(running);
|
||||
_ls_foreach((*s)->temp_values, _destroy_object);
|
||||
_ls_destroy((*s)->temp_values);
|
||||
|
||||
if(context) {
|
||||
safe_free(context);
|
||||
@ -3644,8 +3972,8 @@ int mb_reset(struct mb_interpreter_t** s, bool_t clrf/* = false*/) {
|
||||
(*s)->last_error = SE_NO_ERR;
|
||||
|
||||
running = (*s)->running_context;
|
||||
_ls_clear(running->sub_stack);
|
||||
running->suspent_point = 0;
|
||||
_ls_clear((*s)->sub_stack);
|
||||
(*s)->suspent_point = 0;
|
||||
running->next_loop_var = 0;
|
||||
memset(&(running->intermediate_value), 0, sizeof(mb_value_t));
|
||||
|
||||
@ -3655,9 +3983,7 @@ int mb_reset(struct mb_interpreter_t** s, bool_t clrf/* = false*/) {
|
||||
_ls_foreach(ast, _destroy_object);
|
||||
_ls_clear(ast);
|
||||
|
||||
global_scope = running->var_dict;
|
||||
_ht_foreach(global_scope, _destroy_object);
|
||||
_ht_clear(global_scope);
|
||||
_clear_scope_chain(*s);
|
||||
|
||||
if(clrf) {
|
||||
global_scope = (*s)->global_func_dict;
|
||||
@ -3925,12 +4251,12 @@ int mb_pop_value(struct mb_interpreter_t* s, void** l, mb_value_t* val) {
|
||||
goto _exit;
|
||||
|
||||
if(val_ptr->type == _DT_STRING && !val_ptr->ref) {
|
||||
_ls_foreach(running->temp_values, _destroy_object);
|
||||
_ls_clear(running->temp_values);
|
||||
_ls_foreach(s->temp_values, _destroy_object);
|
||||
_ls_clear(s->temp_values);
|
||||
|
||||
val_ptr = (_object_t*)mb_malloc(sizeof(_object_t));
|
||||
memcpy(val_ptr, &val_obj, sizeof(_object_t));
|
||||
_ls_pushback(running->temp_values, val_ptr);
|
||||
_ls_pushback(s->temp_values, val_ptr);
|
||||
}
|
||||
|
||||
if(s->no_eat_comma_mark < _NO_EAT_COMMA && (!inep || (inep && !(*inep)))) {
|
||||
@ -4203,6 +4529,11 @@ int mb_load_string(struct mb_interpreter_t* s, const char* l) {
|
||||
};
|
||||
status = _parse_char(s, MB_EOS, context->parsing_pos, context->parsing_row, context->parsing_col);
|
||||
|
||||
if(s->running_context->prev) {
|
||||
while(s->running_context->prev)
|
||||
s->running_context = s->running_context->prev;
|
||||
}
|
||||
|
||||
_exit:
|
||||
context->parsing_state = _PS_NORMAL;
|
||||
|
||||
@ -4264,10 +4595,10 @@ int mb_run(struct mb_interpreter_t* s) {
|
||||
if(s->parsing_context)
|
||||
safe_free(s->parsing_context);
|
||||
|
||||
if(running->suspent_point) {
|
||||
ast = running->suspent_point;
|
||||
if(s->suspent_point) {
|
||||
ast = s->suspent_point;
|
||||
ast = ast->next;
|
||||
running->suspent_point = 0;
|
||||
s->suspent_point = 0;
|
||||
} else {
|
||||
mb_assert(!s->no_eat_comma_mark);
|
||||
ast = s->ast;
|
||||
@ -4304,8 +4635,8 @@ int mb_run(struct mb_interpreter_t* s) {
|
||||
} while(ast);
|
||||
|
||||
_exit:
|
||||
_ls_foreach(running->temp_values, _destroy_object);
|
||||
_ls_clear(running->temp_values);
|
||||
_ls_foreach(s->temp_values, _destroy_object);
|
||||
_ls_clear(s->temp_values);
|
||||
|
||||
return result;
|
||||
}
|
||||
@ -4318,7 +4649,7 @@ int mb_suspend(struct mb_interpreter_t* s, void** l) {
|
||||
mb_assert(s && l && *l);
|
||||
|
||||
ast = (_ls_node_t*)(*l);
|
||||
s->running_context->suspent_point = ast;
|
||||
s->suspent_point = ast;
|
||||
|
||||
return result;
|
||||
}
|
||||
@ -4331,7 +4662,7 @@ int mb_schedule_suspend(struct mb_interpreter_t* s, int t) {
|
||||
|
||||
if(t == MB_FUNC_OK)
|
||||
t = MB_FUNC_SUSPEND;
|
||||
s->running_context->schedule_suspend_tag = t;
|
||||
s->schedule_suspend_tag = t;
|
||||
|
||||
return result;
|
||||
}
|
||||
@ -4348,7 +4679,7 @@ int mb_debug_get(struct mb_interpreter_t* s, const char* n, mb_value_t* val) {
|
||||
|
||||
running = s->running_context;
|
||||
|
||||
v = _ht_find(running->var_dict, (void*)n);
|
||||
v = _search_var_in_scope_chain(s, (char*)n);
|
||||
if(v) {
|
||||
obj = (_object_t*)(v->data);
|
||||
mb_assert(obj->type == _DT_VAR);
|
||||
@ -4376,7 +4707,7 @@ int mb_debug_set(struct mb_interpreter_t* s, const char* n, mb_value_t val) {
|
||||
|
||||
running = s->running_context;
|
||||
|
||||
v = _ht_find(running->var_dict, (void*)n);
|
||||
v = _search_var_in_scope_chain(s, (char*)n);
|
||||
if(v) {
|
||||
obj = (_object_t*)(v->data);
|
||||
mb_assert(obj->type == _DT_VAR);
|
||||
@ -5081,7 +5412,7 @@ _elseif:
|
||||
if(ast && ast->next && _IS_EOS(ast->next->data))
|
||||
multi_line = true;
|
||||
|
||||
s->skip_to_eoi = _ls_back(running->sub_stack);
|
||||
s->skip_to_eoi = _ls_back(s->sub_stack);
|
||||
do {
|
||||
ast = ast->next;
|
||||
result = _execute_statement(s, &ast);
|
||||
@ -5603,7 +5934,7 @@ int _core_gosub(mb_interpreter_t* s, void** l) {
|
||||
ast = (_ls_node_t*)(*l);
|
||||
result = _core_goto(s, l);
|
||||
if(result == MB_FUNC_OK)
|
||||
_ls_pushback(running->sub_stack, ast);
|
||||
_ls_pushback(s->sub_stack, ast);
|
||||
|
||||
return result;
|
||||
}
|
||||
@ -5612,12 +5943,22 @@ int _core_return(mb_interpreter_t* s, void** l) {
|
||||
/* RETURN statement */
|
||||
int result = MB_SUB_RETURN;
|
||||
_ls_node_t* ast = 0;
|
||||
_ls_node_t* sub_stack = 0;
|
||||
_running_context_t* running = 0;
|
||||
mb_value_t arg;
|
||||
|
||||
mb_assert(s && l);
|
||||
|
||||
running = s->running_context;
|
||||
ast = (_ls_node_t*)_ls_popback(running->sub_stack);
|
||||
sub_stack = s->sub_stack;
|
||||
|
||||
if(running->prev) {
|
||||
ast = (_ls_node_t*)(*l);
|
||||
ast = ast->next;
|
||||
mb_check(mb_pop_value(s, (void**)(&ast), &arg));
|
||||
mb_check(mb_push_value(s, (void**)(&ast), arg));
|
||||
}
|
||||
ast = (_ls_node_t*)_ls_popback(sub_stack);
|
||||
if(!ast) {
|
||||
_handle_error_on_obj(s, SE_RN_NO_RETURN_POINT, DON(ast), MB_FUNC_ERR, _exit, result);
|
||||
}
|
||||
@ -5630,11 +5971,23 @@ _exit:
|
||||
int _core_call(mb_interpreter_t* s, void** l) {
|
||||
/* CALL statement */
|
||||
int result = MB_FUNC_OK;
|
||||
mb_unrefvar(s);
|
||||
mb_unrefvar(l);
|
||||
_ls_node_t* ast = 0;
|
||||
_object_t* obj = 0;
|
||||
_routine_t* routine = 0;
|
||||
|
||||
mb_assert(0 && "Not implemented");
|
||||
_do_nothing;
|
||||
mb_assert(s && l);
|
||||
|
||||
ast = (_ls_node_t*)(*l);
|
||||
ast = ast->next;
|
||||
|
||||
obj = (_object_t*)(ast->data);
|
||||
routine = (_routine_t*)(obj->data.routine);
|
||||
|
||||
_eval_routine(s, &ast, routine);
|
||||
|
||||
ast = ast->prev;
|
||||
|
||||
*l = ast;
|
||||
|
||||
return result;
|
||||
}
|
||||
@ -5654,28 +6007,72 @@ int _core_var(mb_interpreter_t* s, void** l) {
|
||||
int _core_def(mb_interpreter_t* s, void** l) {
|
||||
/* DEF statement */
|
||||
int result = MB_FUNC_OK;
|
||||
mb_unrefvar(s);
|
||||
mb_unrefvar(l);
|
||||
_ls_node_t* ast = 0;
|
||||
_object_t* obj = 0;
|
||||
_var_t* var = 0;
|
||||
_routine_t* routine = 0;
|
||||
_running_context_t* scope = 0;
|
||||
|
||||
mb_assert(0 && "Not implemented");
|
||||
_do_nothing;
|
||||
mb_assert(s && l);
|
||||
|
||||
scope = s->running_context;
|
||||
|
||||
ast = (_ls_node_t*)(*l);
|
||||
ast = ast->next;
|
||||
obj = (_object_t*)(ast->data);
|
||||
if(!_IS_ROUTINE(obj)) {
|
||||
_handle_error_on_obj(s, SE_RN_ROUTINE_EXPECTED, DON(ast), MB_FUNC_ERR, _exit, result);
|
||||
}
|
||||
routine = (_routine_t*)(((_object_t*)(ast->data))->data.routine);
|
||||
ast = ast->next;
|
||||
obj = (_object_t*)(ast->data);
|
||||
if(!_IS_FUNC(obj, _core_open_bracket)) {
|
||||
_handle_error_on_obj(s, SE_RN_OPEN_BRACKET_EXPECTED, DON(ast), MB_FUNC_ERR, _exit, result);
|
||||
}
|
||||
ast = ast->next;
|
||||
obj = (_object_t*)(ast->data);
|
||||
while(!_IS_FUNC(obj, _core_close_bracket)) {
|
||||
var = obj->data.variable;
|
||||
routine->parameters = _ls_create();
|
||||
_ls_pushback(routine->parameters, var);
|
||||
|
||||
ast = ast->next;
|
||||
obj = (_object_t*)(ast->data);
|
||||
}
|
||||
ast = ast->next;
|
||||
routine->entry = ast;
|
||||
|
||||
_skip_to(s, &ast, _core_enddef, _DT_NIL);
|
||||
|
||||
ast = ast->next;
|
||||
|
||||
_exit:
|
||||
*l = ast;
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
int _core_enddef(mb_interpreter_t* s, void** l) {
|
||||
/* ENDDEF statement */
|
||||
int result = MB_FUNC_OK;
|
||||
mb_unrefvar(s);
|
||||
mb_unrefvar(l);
|
||||
int result = MB_SUB_RETURN;
|
||||
_ls_node_t* ast = 0;
|
||||
_ls_node_t* sub_stack = 0;
|
||||
|
||||
mb_assert(0 && "Not implemented");
|
||||
_do_nothing;
|
||||
mb_assert(s && l);
|
||||
|
||||
sub_stack = s->sub_stack;
|
||||
|
||||
ast = (_ls_node_t*)_ls_popback(sub_stack);
|
||||
if(!ast) {
|
||||
_handle_error_on_obj(s, SE_RN_NO_RETURN_POINT, DON(ast), MB_FUNC_ERR, _exit, result);
|
||||
}
|
||||
*l = ast;
|
||||
|
||||
_exit:
|
||||
return result;
|
||||
}
|
||||
|
||||
int _core_obj(mb_interpreter_t* s, void** l) {
|
||||
int _core_class(mb_interpreter_t* s, void** l) {
|
||||
/* OBJ statement */
|
||||
int result = MB_FUNC_OK;
|
||||
mb_unrefvar(s);
|
||||
@ -5687,7 +6084,7 @@ int _core_obj(mb_interpreter_t* s, void** l) {
|
||||
return result;
|
||||
}
|
||||
|
||||
int _core_endobj(mb_interpreter_t* s, void** l) {
|
||||
int _core_endclass(mb_interpreter_t* s, void** l) {
|
||||
/* ENDOBJ statement */
|
||||
int result = MB_FUNC_OK;
|
||||
mb_unrefvar(s);
|
||||
|
||||
@ -215,6 +215,8 @@ typedef enum mb_error_e {
|
||||
SE_RN_MOD_BY_ZERO,
|
||||
SE_RN_INVALID_EXPRESSION,
|
||||
SE_RN_OUT_OF_MEMORY,
|
||||
SE_RN_DONT_SUSPEND_IN_A_ROUTINE,
|
||||
SE_RN_ROUTINE_EXPECTED,
|
||||
/** Extended abort */
|
||||
SE_EA_EXTENDED_ABORT,
|
||||
/** Extra */
|
||||
|
||||
Binary file not shown.
Binary file not shown.
@ -36,8 +36,8 @@
|
||||
IDI_ICON_MAIN ICON "icon.ico"
|
||||
|
||||
VS_VERSION_INFO VERSIONINFO
|
||||
FILEVERSION 1,1,64,0
|
||||
PRODUCTVERSION 1,1,64,0
|
||||
FILEVERSION 1,1,65,0
|
||||
PRODUCTVERSION 1,1,65,0
|
||||
FILEFLAGSMASK 0x17L
|
||||
# ifdef _DEBUG
|
||||
FILEFLAGS 0x1L
|
||||
@ -55,13 +55,13 @@
|
||||
VALUE "Comments", "MY-BASIC"
|
||||
VALUE "CompanyName", "Wang Renxin"
|
||||
VALUE "FileDescription", "MY-BASIC Interpreter for Windows"
|
||||
VALUE "FileVersion", "1, 1, 64, 0"
|
||||
VALUE "FileVersion", "1, 1, 65, 0"
|
||||
VALUE "InternalName", "my_basic"
|
||||
VALUE "LegalCopyright", "Copyright (C) 2011 - 2015 Wang Renxin"
|
||||
VALUE "LegalTrademarks", "MY-BASIC"
|
||||
VALUE "OriginalFilename", "my_basic.exe"
|
||||
VALUE "ProductName", "MY-BASIC"
|
||||
VALUE "ProductVersion", "1, 1, 64, 0"
|
||||
VALUE "ProductVersion", "1, 1, 65, 0"
|
||||
END
|
||||
END
|
||||
BLOCK "VarFileInfo"
|
||||
|
||||
10
shell/main.c
10
shell/main.c
@ -91,6 +91,8 @@ extern const size_t MB_SIZEOF_FUN;
|
||||
extern const size_t MB_SIZEOF_ARR;
|
||||
extern const size_t MB_SIZEOF_VAR;
|
||||
extern const size_t MB_SIZEOF_LBL;
|
||||
extern const size_t MB_SIZEOF_RTN;
|
||||
extern const size_t MB_SIZEOF_CLS;
|
||||
|
||||
typedef unsigned _pool_chunk_size_t;
|
||||
|
||||
@ -115,9 +117,9 @@ static _pool_t* pool = 0;
|
||||
#define _POOL_NODE_FREE(s) free(_POOL_NODE_PTR(s))
|
||||
|
||||
static void _open_mem_pool(void) {
|
||||
#define N 9
|
||||
#define N 11
|
||||
size_t szs[N];
|
||||
size_t lst[N] = { 0, 0, 0, 0, 0, 0, 0, 0, 0 };
|
||||
size_t lst[N];
|
||||
int i = 0;
|
||||
int j = 0;
|
||||
size_t s = 0;
|
||||
@ -133,6 +135,10 @@ static void _open_mem_pool(void) {
|
||||
szs[6] = MB_SIZEOF_ARR;
|
||||
szs[7] = MB_SIZEOF_VAR;
|
||||
szs[8] = MB_SIZEOF_LBL;
|
||||
szs[9] = MB_SIZEOF_RTN;
|
||||
szs[10] = MB_SIZEOF_CLS;
|
||||
|
||||
memset(lst, 0, sizeof(lst));
|
||||
|
||||
/* Find all unduplicated sizes */
|
||||
for(i = 0; i < N; i++) {
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user