13 #include "../include/oberon.h"
15 #include "oberon-internals.h"
16 #include "oberon-type-compat.h"
17 #include "oberon-common.h"
18 #include "generator.h"
20 // =======================================================================
22 // =======================================================================
25 oberon_make_copy_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
);
27 static oberon_type_t
*
28 oberon_new_type_ptr(int class)
30 oberon_type_t
* x
= GC_MALLOC(sizeof *x
);
31 memset(x
, 0, sizeof *x
);
36 static oberon_type_t
*
37 oberon_new_type_integer(int size
)
40 x
= oberon_new_type_ptr(OBERON_TYPE_INTEGER
);
45 static oberon_type_t
*
46 oberon_new_type_boolean()
49 x
= oberon_new_type_ptr(OBERON_TYPE_BOOLEAN
);
53 static oberon_type_t
*
54 oberon_new_type_real(int size
)
57 x
= oberon_new_type_ptr(OBERON_TYPE_REAL
);
62 static oberon_type_t
*
63 oberon_new_type_char(int size
)
66 x
= oberon_new_type_ptr(OBERON_TYPE_CHAR
);
71 static oberon_type_t
*
72 oberon_new_type_string(int size
)
75 x
= oberon_new_type_ptr(OBERON_TYPE_STRING
);
80 static oberon_type_t
*
81 oberon_new_type_set(int size
)
84 x
= oberon_new_type_ptr(OBERON_TYPE_SET
);
89 static oberon_expr_t
*
90 oberon_new_operator(int op
, oberon_type_t
* result
, oberon_expr_t
* left
, oberon_expr_t
* right
)
92 oberon_oper_t
* operator;
93 operator = GC_MALLOC(sizeof *operator);
94 memset(operator, 0, sizeof *operator);
96 operator -> is_item
= 0;
97 operator -> result
= result
;
98 operator -> read_only
= 1;
100 operator -> left
= left
;
101 operator -> right
= right
;
103 return (oberon_expr_t
*) operator;
106 static oberon_expr_t
*
107 oberon_new_item(int mode
, oberon_type_t
* result
, int read_only
)
109 oberon_item_t
* item
;
110 item
= GC_MALLOC(sizeof *item
);
111 memset(item
, 0, sizeof *item
);
114 item
-> result
= result
;
115 item
-> read_only
= read_only
;
118 return (oberon_expr_t
*)item
;
121 static oberon_type_t
*
122 oberon_get_type_of_int_value(oberon_context_t
* ctx
, int64_t i
)
124 if(i
>= -128 && i
<= 127)
126 return ctx
-> byte_type
;
128 else if(i
>= -32768 && i
<= 32767)
130 return ctx
-> shortint_type
;
132 else if(i
>= -2147483648 && i
<= 2147483647)
134 return ctx
-> int_type
;
138 return ctx
-> longint_type
;
142 static oberon_expr_t
*
143 oberon_make_integer(oberon_context_t
* ctx
, int64_t i
)
145 oberon_expr_t
* expr
;
146 oberon_type_t
* result
;
147 result
= oberon_get_type_of_int_value(ctx
, i
);
148 expr
= oberon_new_item(MODE_INTEGER
, result
, true);
149 expr
-> item
.integer
= i
;
150 expr
-> item
.real
= i
;
154 static oberon_expr_t
*
155 oberon_make_system_byte(oberon_context_t
* ctx
, int64_t i
)
157 oberon_expr_t
* expr
;
158 expr
= oberon_new_item(MODE_SYSBYTE
, ctx
-> system_byte_type
, true);
159 expr
-> item
.integer
= i
;
160 expr
-> item
.real
= i
;
164 static oberon_expr_t
*
165 oberon_make_char(oberon_context_t
* ctx
, int64_t i
)
167 oberon_expr_t
* expr
;
168 expr
= oberon_new_item(MODE_CHAR
, ctx
-> char_type
, true);
169 expr
-> item
.integer
= i
;
170 expr
-> item
.real
= i
;
174 static oberon_expr_t
*
175 oberon_make_real_typed(oberon_context_t
* ctx
, double r
, oberon_type_t
* result
)
177 oberon_expr_t
* expr
;
178 expr
= oberon_new_item(MODE_REAL
, result
, true);
179 expr
-> item
.integer
= r
;
180 expr
-> item
.real
= r
;
184 static oberon_expr_t
*
185 oberon_make_real(oberon_context_t
* ctx
, double r
, bool longmode
)
187 oberon_type_t
* result
;
188 result
= (longmode
) ? (ctx
-> longreal_type
) : (ctx
-> real_type
);
189 return oberon_make_real_typed(ctx
, r
, result
);
192 static oberon_expr_t
*
193 oberon_make_boolean(oberon_context_t
* ctx
, bool cond
)
195 oberon_expr_t
* expr
;
196 expr
= oberon_new_item(MODE_BOOLEAN
, ctx
-> bool_type
, true);
197 expr
-> item
.integer
= cond
;
198 expr
-> item
.real
= cond
;
202 static oberon_expr_t
*
203 oberon_make_set(oberon_context_t
* ctx
, int64_t i
)
205 oberon_expr_t
* expr
;
206 expr
= oberon_new_item(MODE_SET
, ctx
-> set_type
, true);
207 expr
-> item
.integer
= i
;
208 expr
-> item
.real
= i
;
212 static oberon_expr_t
*
213 oberon_make_set_index(oberon_context_t
* ctx
, int64_t i
)
215 oberon_expr_t
* expr
;
216 expr
= oberon_new_item(MODE_SET
, ctx
-> set_type
, true);
217 expr
-> item
.integer
= 1 << i
;
218 expr
-> item
.real
= 1 << i
;
222 static oberon_expr_t
*
223 oberon_make_set_range(oberon_context_t
* ctx
, int64_t x
, int64_t y
)
225 oberon_expr_t
* expr
;
226 expr
= oberon_new_item(MODE_SET
, ctx
-> set_type
, true);
227 expr
-> item
.integer
= (x
<= y
) ? ((2 << y
) - (1 << x
)) : (0);
228 expr
-> item
.real
= expr
-> item
.integer
;
232 // =======================================================================
234 // =======================================================================
236 static oberon_scope_t
*
237 oberon_open_scope(oberon_context_t
* ctx
)
239 oberon_scope_t
* scope
= GC_MALLOC(sizeof *scope
);
240 memset(scope
, 0, sizeof *scope
);
242 oberon_object_t
* list
= GC_MALLOC(sizeof *list
);
243 memset(list
, 0, sizeof *list
);
246 scope
-> list
= list
;
247 scope
-> up
= ctx
-> decl
;
251 scope
-> local
= scope
-> up
-> local
;
252 scope
-> parent
= scope
-> up
-> parent
;
253 scope
-> parent_type
= scope
-> up
-> parent_type
;
254 scope
-> exit_label
= scope
-> up
-> exit_label
;
262 oberon_close_scope(oberon_scope_t
* scope
)
264 oberon_context_t
* ctx
= scope
-> ctx
;
265 ctx
-> decl
= scope
-> up
;
268 static oberon_object_t
*
269 oberon_find_object_in_list(oberon_object_t
* list
, char * name
)
271 oberon_object_t
* x
= list
;
272 while(x
-> next
&& strcmp(x
-> next
-> name
, name
) != 0)
279 static oberon_object_t
*
280 oberon_find_object(oberon_scope_t
* scope
, char * name
, bool check_it
)
282 oberon_object_t
* result
= NULL
;
284 oberon_scope_t
* s
= scope
;
285 while(result
== NULL
&& s
!= NULL
)
287 result
= oberon_find_object_in_list(s
-> list
, name
);
291 if(check_it
&& result
== NULL
)
293 oberon_error(scope
-> ctx
, "undefined ident %s", name
);
299 static oberon_object_t
*
300 oberon_create_object(oberon_scope_t
* scope
, char * name
, int class, bool export
, bool read_only
)
302 oberon_object_t
* newvar
= GC_MALLOC(sizeof *newvar
);
303 memset(newvar
, 0, sizeof *newvar
);
304 newvar
-> name
= name
;
305 newvar
-> class = class;
306 newvar
-> export
= export
;
307 newvar
-> read_only
= read_only
;
308 newvar
-> local
= scope
-> local
;
309 newvar
-> parent
= scope
-> parent
;
310 newvar
-> parent_type
= scope
-> parent_type
;
311 newvar
-> module
= scope
-> ctx
-> mod
;
315 static oberon_object_t
*
316 oberon_define_object(oberon_scope_t
* scope
, char * name
, int class, bool export
, bool read_only
, bool check_upscope
)
320 if(oberon_find_object(scope
-> up
, name
, false))
322 oberon_error(scope
-> ctx
, "already defined");
326 oberon_object_t
* x
= scope
-> list
;
327 while(x
-> next
&& strcmp(x
-> next
-> name
, name
) != 0)
334 oberon_error(scope
-> ctx
, "already defined");
337 oberon_object_t
* newvar
;
338 newvar
= oberon_create_object(scope
, name
, class, export
, read_only
);
344 // =======================================================================
346 // =======================================================================
349 oberon_get_char(oberon_context_t
* ctx
)
351 if(ctx
-> code
[ctx
-> code_index
])
353 ctx
-> code_index
+= 1;
354 ctx
-> c
= ctx
-> code
[ctx
-> code_index
];
359 oberon_init_scaner(oberon_context_t
* ctx
, const char * code
)
362 ctx
-> code_index
= 0;
363 ctx
-> c
= ctx
-> code
[ctx
-> code_index
];
367 oberon_read_ident(oberon_context_t
* ctx
)
369 int start
= ctx
-> code_index
;
371 oberon_get_char(ctx
);
372 while(isalnum(ctx
-> c
) || ctx
-> c
== '_')
374 oberon_get_char(ctx
);
377 int end
= ctx
-> code_index
;
379 char * ident
= GC_MALLOC(end
- start
+ 1);
380 memcpy(ident
, &ctx
-> code
[start
], end
- start
);
381 ident
[end
- start
] = 0;
383 ctx
-> string
= ident
;
384 ctx
-> token
= IDENT
;
386 if(strcmp(ident
, "MODULE") == 0)
388 ctx
-> token
= MODULE
;
390 else if(strcmp(ident
, "END") == 0)
394 else if(strcmp(ident
, "VAR") == 0)
398 else if(strcmp(ident
, "BEGIN") == 0)
400 ctx
-> token
= BEGIN
;
402 else if(strcmp(ident
, "OR") == 0)
406 else if(strcmp(ident
, "DIV") == 0)
410 else if(strcmp(ident
, "MOD") == 0)
414 else if(strcmp(ident
, "PROCEDURE") == 0)
416 ctx
-> token
= PROCEDURE
;
418 else if(strcmp(ident
, "RETURN") == 0)
420 ctx
-> token
= RETURN
;
422 else if(strcmp(ident
, "CONST") == 0)
424 ctx
-> token
= CONST
;
426 else if(strcmp(ident
, "TYPE") == 0)
430 else if(strcmp(ident
, "ARRAY") == 0)
432 ctx
-> token
= ARRAY
;
434 else if(strcmp(ident
, "OF") == 0)
438 else if(strcmp(ident
, "RECORD") == 0)
440 ctx
-> token
= RECORD
;
442 else if(strcmp(ident
, "POINTER") == 0)
444 ctx
-> token
= POINTER
;
446 else if(strcmp(ident
, "TO") == 0)
450 else if(strcmp(ident
, "NIL") == 0)
454 else if(strcmp(ident
, "IMPORT") == 0)
456 ctx
-> token
= IMPORT
;
458 else if(strcmp(ident
, "IN") == 0)
462 else if(strcmp(ident
, "IS") == 0)
466 else if(strcmp(ident
, "IF") == 0)
470 else if(strcmp(ident
, "THEN") == 0)
474 else if(strcmp(ident
, "ELSE") == 0)
478 else if(strcmp(ident
, "ELSIF") == 0)
480 ctx
-> token
= ELSIF
;
482 else if(strcmp(ident
, "WHILE") == 0)
484 ctx
-> token
= WHILE
;
486 else if(strcmp(ident
, "DO") == 0)
490 else if(strcmp(ident
, "REPEAT") == 0)
492 ctx
-> token
= REPEAT
;
494 else if(strcmp(ident
, "UNTIL") == 0)
496 ctx
-> token
= UNTIL
;
498 else if(strcmp(ident
, "FOR") == 0)
502 else if(strcmp(ident
, "BY") == 0)
506 else if(strcmp(ident
, "LOOP") == 0)
510 else if(strcmp(ident
, "EXIT") == 0)
514 else if(strcmp(ident
, "CASE") == 0)
518 else if(strcmp(ident
, "WITH") == 0)
524 #define ISHEXDIGIT(x) \
525 (((x) >= '0' && (x) <= '9') || ((x) >= 'A' && (x) <= 'F'))
528 oberon_read_number(oberon_context_t
* ctx
)
541 * mode = 3 == LONGREAL
545 start_i
= ctx
-> code_index
;
547 while(isdigit(ctx
-> c
))
549 oberon_get_char(ctx
);
552 end_i
= ctx
-> code_index
;
554 if(ISHEXDIGIT(ctx
-> c
))
557 while(ISHEXDIGIT(ctx
-> c
))
559 oberon_get_char(ctx
);
562 end_i
= ctx
-> code_index
;
567 oberon_get_char(ctx
);
569 else if(ctx
-> c
== 'X')
572 oberon_get_char(ctx
);
576 oberon_error(ctx
, "invalid hex number");
579 else if(ctx
-> c
== '.')
581 oberon_get_char(ctx
);
584 /* Чит: избегаем конфликта с DOTDOT */
585 ctx
-> code_index
-= 1;
591 while(isdigit(ctx
-> c
))
593 oberon_get_char(ctx
);
596 if(ctx
-> c
== 'E' || ctx
-> c
== 'D')
598 exp_i
= ctx
-> code_index
;
605 oberon_get_char(ctx
);
607 if(ctx
-> c
== '+' || ctx
-> c
== '-')
609 oberon_get_char(ctx
);
612 while(isdigit(ctx
-> c
))
614 oberon_get_char(ctx
);
618 end_i
= ctx
-> code_index
;
626 oberon_get_char(ctx
);
628 else if(ctx
-> c
== 'X')
631 oberon_get_char(ctx
);
635 int len
= end_i
- start_i
;
636 ident
= GC_MALLOC(len
+ 1);
637 memcpy(ident
, &ctx
-> code
[start_i
], len
);
640 ctx
-> longmode
= false;
643 int i
= exp_i
- start_i
;
645 ctx
-> longmode
= true;
651 integer
= atol(ident
);
653 ctx
-> token
= INTEGER
;
656 sscanf(ident
, "%lx", &integer
);
658 ctx
-> token
= INTEGER
;
662 sscanf(ident
, "%lf", &real
);
667 sscanf(ident
, "%lx", &integer
);
672 oberon_error(ctx
, "oberon_read_number: wat");
676 ctx
-> string
= ident
;
677 ctx
-> integer
= integer
;
682 oberon_skip_space(oberon_context_t
* ctx
)
684 while(isspace(ctx
-> c
))
686 oberon_get_char(ctx
);
691 oberon_read_comment(oberon_context_t
* ctx
)
698 oberon_get_char(ctx
);
701 oberon_get_char(ctx
);
705 else if(ctx
-> c
== '*')
707 oberon_get_char(ctx
);
710 oberon_get_char(ctx
);
714 else if(ctx
-> c
== 0)
716 oberon_error(ctx
, "unterminated comment");
720 oberon_get_char(ctx
);
725 static void oberon_read_string(oberon_context_t
* ctx
)
728 oberon_get_char(ctx
);
730 int start
= ctx
-> code_index
;
732 while(ctx
-> c
!= 0 && ctx
-> c
!= c
)
734 oberon_get_char(ctx
);
739 oberon_error(ctx
, "unterminated string");
742 int end
= ctx
-> code_index
;
744 oberon_get_char(ctx
);
746 char * string
= GC_MALLOC(end
- start
+ 1);
747 strncpy(string
, &ctx
-> code
[start
], end
- start
);
748 string
[end
- start
] = 0;
750 ctx
-> token
= STRING
;
751 ctx
-> string
= string
;
752 ctx
-> integer
= string
[0];
755 static void oberon_read_token(oberon_context_t
* ctx
);
758 oberon_read_symbol(oberon_context_t
* ctx
)
767 ctx
-> token
= SEMICOLON
;
768 oberon_get_char(ctx
);
771 ctx
-> token
= COLON
;
772 oberon_get_char(ctx
);
775 ctx
-> token
= ASSIGN
;
776 oberon_get_char(ctx
);
781 oberon_get_char(ctx
);
784 ctx
-> token
= DOTDOT
;
785 oberon_get_char(ctx
);
789 ctx
-> token
= LPAREN
;
790 oberon_get_char(ctx
);
793 oberon_get_char(ctx
);
794 oberon_read_comment(ctx
);
795 oberon_read_token(ctx
);
799 ctx
-> token
= RPAREN
;
800 oberon_get_char(ctx
);
803 ctx
-> token
= EQUAL
;
804 oberon_get_char(ctx
);
808 oberon_get_char(ctx
);
812 oberon_get_char(ctx
);
816 oberon_get_char(ctx
);
820 ctx
-> token
= GREAT
;
821 oberon_get_char(ctx
);
825 oberon_get_char(ctx
);
830 oberon_get_char(ctx
);
833 ctx
-> token
= MINUS
;
834 oberon_get_char(ctx
);
838 oberon_get_char(ctx
);
841 oberon_get_char(ctx
);
842 oberon_error(ctx
, "unstarted comment");
846 ctx
-> token
= SLASH
;
847 oberon_get_char(ctx
);
851 oberon_get_char(ctx
);
855 oberon_get_char(ctx
);
858 ctx
-> token
= COMMA
;
859 oberon_get_char(ctx
);
862 ctx
-> token
= LBRACK
;
863 oberon_get_char(ctx
);
866 ctx
-> token
= RBRACK
;
867 oberon_get_char(ctx
);
870 ctx
-> token
= UPARROW
;
871 oberon_get_char(ctx
);
874 oberon_read_string(ctx
);
877 oberon_read_string(ctx
);
880 ctx
-> token
= LBRACE
;
881 oberon_get_char(ctx
);
884 ctx
-> token
= RBRACE
;
885 oberon_get_char(ctx
);
889 oberon_get_char(ctx
);
892 oberon_error(ctx
, "invalid char %c", ctx
-> c
);
898 oberon_read_token(oberon_context_t
* ctx
)
900 oberon_skip_space(ctx
);
903 if(isalpha(c
) || c
== '_')
905 oberon_read_ident(ctx
);
909 oberon_read_number(ctx
);
913 oberon_read_symbol(ctx
);
917 // =======================================================================
919 // =======================================================================
921 static void oberon_expect_token(oberon_context_t
* ctx
, int token
);
922 static oberon_expr_t
* oberon_expr(oberon_context_t
* ctx
);
923 static void oberon_assert_token(oberon_context_t
* ctx
, int token
);
924 static char * oberon_assert_ident(oberon_context_t
* ctx
);
925 static void oberon_type(oberon_context_t
* ctx
, oberon_type_t
** type
);
926 static oberon_item_t
* oberon_const_expr(oberon_context_t
* ctx
);
927 static oberon_expr_t
* oberno_make_dereferencing(oberon_context_t
* ctx
, oberon_expr_t
* expr
);
928 static bool oberon_is_const(oberon_expr_t
* expr
);
930 static oberon_expr_t
*
931 oberon_make_unary_op(oberon_context_t
* ctx
, int token
, oberon_expr_t
* a
)
933 oberon_expr_t
* expr
;
934 oberon_type_t
* result
;
936 result
= a
-> result
;
940 if(result
-> class == OBERON_TYPE_SET
)
942 if(oberon_is_const(a
))
944 expr
= oberon_make_set(ctx
, ~(a
-> item
.integer
));
948 expr
= oberon_new_operator(OP_COMPLEMENTATION
, result
, a
, NULL
);
951 else if(result
-> class == OBERON_TYPE_INTEGER
)
953 if(oberon_is_const(a
))
955 expr
= oberon_make_integer(ctx
, -(a
-> item
.integer
));
959 expr
= oberon_new_operator(OP_UNARY_MINUS
, result
, a
, NULL
);
962 else if(result
-> class == OBERON_TYPE_REAL
)
964 if(oberon_is_const(a
))
966 expr
= oberon_make_real_typed(ctx
, -(a
-> item
.real
), result
);
970 expr
= oberon_new_operator(OP_UNARY_MINUS
, result
, a
, NULL
);
975 oberon_error(ctx
, "incompatible operator type");
978 else if(token
== NOT
)
980 if(result
-> class != OBERON_TYPE_BOOLEAN
)
982 oberon_error(ctx
, "incompatible operator type");
985 if(oberon_is_const(a
))
987 expr
= oberon_make_boolean(ctx
, !(a
-> item
.integer
));
991 expr
= oberon_new_operator(OP_LOGIC_NOT
, result
, a
, NULL
);
996 oberon_error(ctx
, "oberon_make_unary_op: wat");
1003 oberon_expr_list(oberon_context_t
* ctx
, int * num_expr
, oberon_expr_t
** first
, int const_expr
)
1005 oberon_expr_t
* last
;
1010 *first
= last
= (oberon_expr_t
*) oberon_const_expr(ctx
);
1014 *first
= last
= oberon_expr(ctx
);
1016 while(ctx
-> token
== COMMA
)
1018 oberon_assert_token(ctx
, COMMA
);
1019 oberon_expr_t
* current
;
1023 current
= (oberon_expr_t
*) oberon_const_expr(ctx
);
1027 current
= oberon_expr(ctx
);
1030 last
-> next
= current
;
1036 static oberon_expr_t
*
1037 oberon_cast_expr(oberon_context_t
* ctx
, oberon_expr_t
* expr
, oberon_type_t
* pref
)
1039 oberon_expr_t
* cast
;
1041 if((oberon_is_char_type(pref
) && oberon_is_const_string(expr
) && strlen(expr
-> item
.string
) == 1))
1043 /* Автоматически преобразуем строку единичного размера в символ */
1044 cast
= oberon_new_item(MODE_CHAR
, ctx
-> char_type
, true);
1045 cast
-> item
.integer
= expr
-> item
.string
[0];
1047 else if(!oberon_is_some_types(expr
-> result
, pref
))
1049 cast
= oberon_new_operator(OP_CAST
, pref
, expr
, NULL
);
1060 oberon_check_dst(oberon_context_t
* ctx
, oberon_expr_t
* dst
)
1062 if(dst
-> read_only
)
1064 oberon_error(ctx
, "read-only destination");
1067 if(dst
-> is_item
== false)
1069 oberon_error(ctx
, "not variable");
1072 switch(dst
-> item
.mode
)
1083 oberon_error(ctx
, "not variable");
1089 oberon_check_src(oberon_context_t
* ctx
, oberon_expr_t
* src
)
1093 if(src
-> item
.mode
== MODE_TYPE
)
1095 oberon_error(ctx
, "not variable");
1101 oberon_autocast_call(oberon_context_t
* ctx
, oberon_item_t
* desig
)
1103 if(desig
-> mode
!= MODE_CALL
)
1105 oberon_error(ctx
, "expected mode CALL");
1108 oberon_type_t
* fn
= desig
-> parent
-> result
;
1109 int num_args
= desig
-> num_args
;
1110 int num_decl
= fn
-> num_decl
;
1112 if(num_args
< num_decl
)
1114 oberon_error(ctx
, "too few arguments");
1116 else if(num_args
> num_decl
)
1118 oberon_error(ctx
, "too many arguments");
1121 /* Делаем проверку на запись и делаем автокаст */
1122 oberon_expr_t
* casted
[num_args
];
1123 oberon_expr_t
* arg
= desig
-> args
;
1124 oberon_object_t
* param
= fn
-> decl
;
1125 for(int i
= 0; i
< num_args
; i
++)
1127 if(param
-> class == OBERON_CLASS_VAR_PARAM
)
1129 oberon_check_dst(ctx
, arg
);
1130 if(!oberon_is_compatible_arrays(param
, arg
))
1132 oberon_check_compatible_var_param(ctx
, param
-> type
, arg
-> result
);
1135 //casted[i] = oberon_cast_expr(ctx, arg, param -> type);
1139 oberon_check_src(ctx
, arg
);
1140 if(!oberon_is_compatible_arrays(param
, arg
))
1142 oberon_check_assignment_compatible(ctx
, arg
, param
-> type
);
1144 casted
[i
] = oberon_cast_expr(ctx
, arg
, param
-> type
);
1148 param
= param
-> next
;
1151 /* Создаём новый список выражений */
1155 for(int i
= 0; i
< num_args
- 1; i
++)
1157 casted
[i
] -> next
= casted
[i
+ 1];
1159 desig
-> args
= arg
;
1163 static oberon_expr_t
*
1164 oberon_make_call_func(oberon_context_t
* ctx
, oberon_item_t
* item
, int num_args
, oberon_expr_t
* list_args
)
1166 oberon_type_t
* signature
= item
-> result
;
1167 if(signature
-> class != OBERON_TYPE_PROCEDURE
)
1169 oberon_error(ctx
, "not a procedure");
1172 oberon_expr_t
* call
;
1174 if(signature
-> sysproc
)
1176 if(signature
-> genfunc
== NULL
)
1178 oberon_error(ctx
, "not a function-procedure");
1181 call
= signature
-> genfunc(ctx
, num_args
, list_args
);
1185 if(signature
-> base
-> class == OBERON_TYPE_NOTYPE
)
1187 oberon_error(ctx
, "attempt to call procedure in expression");
1190 call
= oberon_new_item(MODE_CALL
, signature
-> base
, true);
1191 call
-> item
.parent
= item
;
1192 call
-> item
.num_args
= num_args
;
1193 call
-> item
.args
= list_args
;
1194 oberon_autocast_call(ctx
, (oberon_item_t
*) call
);
1201 oberon_make_call_proc(oberon_context_t
* ctx
, oberon_item_t
* item
, int num_args
, oberon_expr_t
* list_args
)
1203 oberon_type_t
* signature
= item
-> result
;
1204 if(signature
-> class != OBERON_TYPE_PROCEDURE
)
1206 oberon_error(ctx
, "not a procedure");
1209 oberon_expr_t
* call
;
1211 if(signature
-> sysproc
)
1213 if(signature
-> genproc
== NULL
)
1215 oberon_error(ctx
, "not a procedure");
1218 signature
-> genproc(ctx
, num_args
, list_args
);
1222 if(signature
-> base
-> class != OBERON_TYPE_NOTYPE
)
1224 oberon_error(ctx
, "attempt to call function as non-typed procedure");
1227 call
= oberon_new_item(MODE_CALL
, signature
-> base
, true);
1228 call
-> item
.parent
= item
;
1229 call
-> item
.num_args
= num_args
;
1230 call
-> item
.args
= list_args
;
1231 oberon_autocast_call(ctx
, (oberon_item_t
*) call
);
1232 oberon_generate_call_proc(ctx
, call
);
1240 || ((x) == INTEGER) \
1243 || ((x) == STRING) \
1245 || ((x) == LPAREN) \
1248 static oberon_expr_t
*
1249 oberno_make_dereferencing(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
1251 if(expr
-> result
-> class != OBERON_TYPE_POINTER
)
1253 oberon_error(ctx
, "not a pointer");
1256 assert(expr
-> is_item
);
1258 oberon_expr_t
* selector
;
1259 selector
= oberon_new_item(MODE_DEREF
, expr
-> result
-> base
, false);
1260 selector
-> item
.parent
= (oberon_item_t
*) expr
;
1265 static oberon_expr_t
*
1266 oberon_make_array_selector(oberon_context_t
* ctx
, oberon_expr_t
* desig
, oberon_expr_t
* index
)
1268 if(desig
-> result
-> class == OBERON_TYPE_POINTER
)
1270 desig
= oberno_make_dereferencing(ctx
, desig
);
1273 assert(desig
-> is_item
);
1275 if(desig
-> result
-> class != OBERON_TYPE_ARRAY
)
1277 oberon_error(ctx
, "not array");
1280 oberon_type_t
* base
;
1281 base
= desig
-> result
-> base
;
1283 if(index
-> result
-> class != OBERON_TYPE_INTEGER
)
1285 oberon_error(ctx
, "index must be integer");
1288 // Статическая проверка границ массива
1289 if(desig
-> result
-> size
!= 0)
1291 if(index
-> is_item
)
1293 if(index
-> item
.mode
== MODE_INTEGER
)
1295 int arr_size
= desig
-> result
-> size
;
1296 int index_int
= index
-> item
.integer
;
1297 if(index_int
< 0 || index_int
> arr_size
- 1)
1299 oberon_error(ctx
, "not in range (dimension size 0..%i)", arr_size
- 1);
1305 oberon_expr_t
* selector
;
1306 selector
= oberon_new_item(MODE_INDEX
, base
, desig
-> read_only
);
1307 selector
-> item
.parent
= (oberon_item_t
*) desig
;
1308 selector
-> item
.num_args
= 1;
1309 selector
-> item
.args
= index
;
1314 static oberon_expr_t
*
1315 oberon_make_record_selector(oberon_context_t
* ctx
, oberon_expr_t
* expr
, char * name
)
1317 if(expr
-> result
-> class == OBERON_TYPE_POINTER
)
1319 expr
= oberno_make_dereferencing(ctx
, expr
);
1322 assert(expr
-> is_item
);
1324 if(expr
-> result
-> class != OBERON_TYPE_RECORD
)
1326 oberon_error(ctx
, "not record");
1329 oberon_type_t
* rec
= expr
-> result
;
1331 oberon_object_t
* field
;
1332 field
= oberon_find_object(rec
-> scope
, name
, true);
1334 if(field
-> export
== 0)
1336 if(field
-> module
!= ctx
-> mod
)
1338 oberon_error(ctx
, "field not exported");
1342 int read_only
= expr
-> read_only
;
1343 if(field
-> read_only
)
1345 if(field
-> module
!= ctx
-> mod
)
1351 oberon_expr_t
* selector
;
1352 selector
= oberon_new_item(MODE_FIELD
, field
-> type
, read_only
);
1353 selector
-> item
.var
= field
;
1354 selector
-> item
.parent
= (oberon_item_t
*) expr
;
1359 #define ISSELECTOR(x) \
1362 || ((x) == UPARROW) \
1365 static oberon_object_t
*
1366 oberon_qualident(oberon_context_t
* ctx
, char ** xname
, int check
)
1369 oberon_object_t
* x
;
1371 name
= oberon_assert_ident(ctx
);
1372 x
= oberon_find_object(ctx
-> decl
, name
, check
);
1376 if(x
-> class == OBERON_CLASS_MODULE
)
1378 oberon_assert_token(ctx
, DOT
);
1379 name
= oberon_assert_ident(ctx
);
1380 /* Наличие объектов в левых модулях всегда проверяется */
1381 x
= oberon_find_object(x
-> module
-> decl
, name
, 1);
1383 if(x
-> export
== 0)
1385 oberon_error(ctx
, "not exported");
1398 static oberon_expr_t
*
1399 oberon_ident_item(oberon_context_t
* ctx
, char * name
)
1402 oberon_object_t
* x
;
1403 oberon_expr_t
* expr
;
1405 x
= oberon_find_object(ctx
-> decl
, name
, true);
1408 if(x
-> class == OBERON_CLASS_CONST
|| x
-> class == OBERON_CLASS_PROC
)
1413 expr
= oberon_new_item(MODE_VAR
, x
-> type
, read_only
);
1414 expr
-> item
.var
= x
;
1418 static oberon_expr_t
*
1419 oberon_qualident_expr(oberon_context_t
* ctx
)
1421 oberon_object_t
* var
;
1422 oberon_expr_t
* expr
;
1424 var
= oberon_qualident(ctx
, NULL
, 1);
1427 if(var
-> read_only
)
1429 if(var
-> module
!= ctx
-> mod
)
1435 switch(var
-> class)
1437 case OBERON_CLASS_CONST
:
1439 expr
= (oberon_expr_t
*) var
-> value
;
1441 case OBERON_CLASS_TYPE
:
1442 expr
= oberon_new_item(MODE_TYPE
, var
-> type
, read_only
);
1444 case OBERON_CLASS_VAR
:
1445 case OBERON_CLASS_VAR_PARAM
:
1446 case OBERON_CLASS_PARAM
:
1447 expr
= oberon_new_item(MODE_VAR
, var
-> type
, read_only
);
1449 case OBERON_CLASS_PROC
:
1450 expr
= oberon_new_item(MODE_VAR
, var
-> type
, true);
1453 oberon_error(ctx
, "invalid designator");
1457 expr
-> item
.var
= var
;
1462 static oberon_expr_t
*
1463 oberon_designator(oberon_context_t
* ctx
)
1466 oberon_expr_t
* expr
;
1467 oberon_object_t
* objtype
;
1469 expr
= oberon_qualident_expr(ctx
);
1471 while(expr
-> result
-> class != OBERON_TYPE_PROCEDURE
&& ISSELECTOR(ctx
-> token
))
1473 switch(ctx
-> token
)
1476 oberon_assert_token(ctx
, DOT
);
1477 name
= oberon_assert_ident(ctx
);
1478 expr
= oberon_make_record_selector(ctx
, expr
, name
);
1481 oberon_assert_token(ctx
, LBRACK
);
1482 int num_indexes
= 0;
1483 oberon_expr_t
* indexes
= NULL
;
1484 oberon_expr_list(ctx
, &num_indexes
, &indexes
, 0);
1485 oberon_assert_token(ctx
, RBRACK
);
1487 for(int i
= 0; i
< num_indexes
; i
++)
1489 expr
= oberon_make_array_selector(ctx
, expr
, indexes
);
1490 indexes
= indexes
-> next
;
1494 oberon_assert_token(ctx
, UPARROW
);
1495 expr
= oberno_make_dereferencing(ctx
, expr
);
1498 oberon_assert_token(ctx
, LPAREN
);
1499 objtype
= oberon_qualident(ctx
, NULL
, true);
1500 oberon_assert_token(ctx
, RPAREN
);
1501 oberon_check_extension_of(ctx
, expr
-> result
, objtype
-> type
);
1502 expr
= oberon_cast_expr(ctx
, expr
, objtype
-> type
);
1505 oberon_error(ctx
, "oberon_designator: wat");
1513 static oberon_expr_t
*
1514 oberon_opt_func_parens(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
1516 /* Если есть скобки - значит вызов. Если нет, то передаём указатель. */
1517 if(ctx
-> token
== LPAREN
)
1519 oberon_assert_token(ctx
, LPAREN
);
1522 oberon_expr_t
* arguments
= NULL
;
1524 if(ISEXPR(ctx
-> token
))
1526 oberon_expr_list(ctx
, &num_args
, &arguments
, 0);
1529 assert(expr
-> is_item
== 1);
1530 expr
= oberon_make_call_func(ctx
, (oberon_item_t
*) expr
, num_args
, arguments
);
1532 oberon_assert_token(ctx
, RPAREN
);
1539 oberon_opt_proc_parens(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
1541 assert(expr
-> is_item
);
1544 oberon_expr_t
* arguments
= NULL
;
1546 if(ctx
-> token
== LPAREN
)
1548 oberon_assert_token(ctx
, LPAREN
);
1550 if(ISEXPR(ctx
-> token
))
1552 oberon_expr_list(ctx
, &num_args
, &arguments
, 0);
1555 oberon_assert_token(ctx
, RPAREN
);
1558 /* Вызов происходит даже без скобок */
1559 oberon_make_call_proc(ctx
, (oberon_item_t
*) expr
, num_args
, arguments
);
1562 static oberon_expr_t
*
1563 oberon_element(oberon_context_t
* ctx
)
1568 e1
= oberon_expr(ctx
);
1569 oberon_check_src(ctx
, e1
);
1570 if(e1
-> result
-> class != OBERON_TYPE_INTEGER
)
1572 oberon_error(ctx
, "expected integer");
1576 if(ctx
-> token
== DOTDOT
)
1578 oberon_assert_token(ctx
, DOTDOT
);
1579 e2
= oberon_expr(ctx
);
1580 oberon_check_src(ctx
, e2
);
1581 if(e2
-> result
-> class != OBERON_TYPE_INTEGER
)
1583 oberon_error(ctx
, "expected integer");
1587 oberon_expr_t
* set
;
1588 if(e2
== NULL
&& oberon_is_const(e1
))
1590 set
= oberon_make_set_index(ctx
, e1
-> item
.integer
);
1592 else if(e2
!= NULL
&& oberon_is_const(e1
) && oberon_is_const(e2
))
1594 set
= oberon_make_set_range(ctx
, e1
-> item
.integer
, e2
-> item
.integer
);
1598 set
= oberon_new_operator(OP_RANGE
, ctx
-> set_type
, e1
, e2
);
1603 static oberon_expr_t
*
1604 oberon_make_set_union(oberon_context_t
* ctx
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1606 if(oberon_is_const(a
) && oberon_is_const(b
))
1608 return oberon_make_set(ctx
, (a
-> item
.integer
| b
-> item
.integer
));
1612 return oberon_new_operator(OP_UNION
, ctx
-> set_type
, a
, b
);
1616 static oberon_expr_t
*
1617 oberon_set(oberon_context_t
* ctx
)
1619 oberon_expr_t
* set
;
1620 oberon_expr_t
* elements
;
1621 set
= oberon_make_set(ctx
, 0);
1623 oberon_assert_token(ctx
, LBRACE
);
1624 if(ISEXPR(ctx
-> token
))
1626 elements
= oberon_element(ctx
);
1627 set
= oberon_make_set_union(ctx
, set
, elements
);
1628 while(ctx
-> token
== COMMA
)
1630 oberon_assert_token(ctx
, COMMA
);
1631 elements
= oberon_element(ctx
);
1632 set
= oberon_make_set_union(ctx
, set
, elements
);
1635 oberon_assert_token(ctx
, RBRACE
);
1640 static oberon_expr_t
*
1641 oberon_factor(oberon_context_t
* ctx
)
1643 oberon_expr_t
* expr
;
1644 oberon_type_t
* result
;
1646 switch(ctx
-> token
)
1649 expr
= oberon_designator(ctx
);
1650 expr
= oberon_opt_func_parens(ctx
, expr
);
1653 expr
= oberon_make_integer(ctx
, ctx
-> integer
);
1654 oberon_assert_token(ctx
, INTEGER
);
1657 result
= ctx
-> char_type
;
1658 expr
= oberon_new_item(MODE_CHAR
, result
, true);
1659 expr
-> item
.integer
= ctx
-> integer
;
1660 oberon_assert_token(ctx
, CHAR
);
1663 result
= ctx
-> string_type
;
1664 expr
= oberon_new_item(MODE_STRING
, result
, true);
1665 expr
-> item
.string
= ctx
-> string
;
1666 oberon_assert_token(ctx
, STRING
);
1669 expr
= oberon_make_real(ctx
, ctx
-> real
, ctx
-> longmode
);
1670 oberon_assert_token(ctx
, REAL
);
1673 expr
= oberon_set(ctx
);
1676 oberon_assert_token(ctx
, LPAREN
);
1677 expr
= oberon_expr(ctx
);
1678 oberon_assert_token(ctx
, RPAREN
);
1681 oberon_assert_token(ctx
, NOT
);
1682 expr
= oberon_factor(ctx
);
1683 expr
= oberon_make_unary_op(ctx
, NOT
, expr
);
1686 oberon_assert_token(ctx
, NIL
);
1687 expr
= oberon_new_item(MODE_NIL
, ctx
-> nil_type
, true);
1690 oberon_error(ctx
, "invalid expression");
1696 static oberon_expr_t
*
1697 oberon_make_bin_op(oberon_context_t
* ctx
, int token
, oberon_expr_t
* a
, oberon_expr_t
* b
)
1699 oberon_expr_t
* expr
;
1700 oberon_type_t
* result
;
1702 oberon_check_compatible_bin_expr_types(ctx
, token
, a
-> result
, b
-> result
);
1703 oberon_check_src(ctx
, a
);
1706 oberon_check_src(ctx
, b
);
1711 if(oberon_is_const(a
) && oberon_is_const(b
))
1713 expr
= oberon_make_boolean(ctx
, (1 << a
-> item
.integer
) & b
-> item
.integer
);
1717 expr
= oberon_new_operator(OP_IN
, ctx
-> bool_type
, a
, b
);
1720 else if(token
== IS
)
1722 oberon_check_type_expr(ctx
, b
);
1723 expr
= oberon_new_operator(OP_IS
, ctx
-> bool_type
, a
, b
);
1725 else if((token
>= EQUAL
&& token
<= GEQ
) || token
== OR
|| token
== AND
)
1727 result
= oberon_get_longer_type(ctx
, a
-> result
, b
-> result
);
1729 if(oberon_is_const(a
) && oberon_is_const(b
)
1730 && (oberon_is_real_type(result
) || oberon_is_integer_type(result
)))
1732 if(oberon_is_real_type(result
))
1734 double x
= a
-> item
.real
;
1735 double y
= b
-> item
.real
;
1738 case EQUAL
: expr
= oberon_make_boolean(ctx
, x
== y
); break;
1739 case NEQ
: expr
= oberon_make_boolean(ctx
, x
!= y
); break;
1740 case LESS
: expr
= oberon_make_boolean(ctx
, x
< y
); break;
1741 case LEQ
: expr
= oberon_make_boolean(ctx
, x
<= y
); break;
1742 case GREAT
: expr
= oberon_make_boolean(ctx
, x
> y
); break;
1743 case GEQ
: expr
= oberon_make_boolean(ctx
, x
>= y
); break;
1744 case OR
: expr
= oberon_make_boolean(ctx
, x
|| y
); break;
1745 case AND
: expr
= oberon_make_boolean(ctx
, x
&& y
); break;
1746 default: assert(0); break;
1749 else if(oberon_is_integer_type(result
))
1751 int64_t x
= a
-> item
.integer
;
1752 int64_t y
= b
-> item
.integer
;
1755 case EQUAL
: expr
= oberon_make_boolean(ctx
, x
== y
); break;
1756 case NEQ
: expr
= oberon_make_boolean(ctx
, x
!= y
); break;
1757 case LESS
: expr
= oberon_make_boolean(ctx
, x
< y
); break;
1758 case LEQ
: expr
= oberon_make_boolean(ctx
, x
<= y
); break;
1759 case GREAT
: expr
= oberon_make_boolean(ctx
, x
> y
); break;
1760 case GEQ
: expr
= oberon_make_boolean(ctx
, x
>= y
); break;
1761 case OR
: expr
= oberon_make_boolean(ctx
, x
|| y
); break;
1762 case AND
: expr
= oberon_make_boolean(ctx
, x
&& y
); break;
1763 default: assert(0); break;
1773 a
= oberon_cast_expr(ctx
, a
, result
);
1774 b
= oberon_cast_expr(ctx
, b
, result
);
1775 result
= ctx
-> bool_type
;
1778 case EQUAL
: expr
= oberon_new_operator(OP_EQ
, result
, a
, b
); break;
1779 case NEQ
: expr
= oberon_new_operator(OP_NEQ
, result
, a
, b
); break;
1780 case LESS
: expr
= oberon_new_operator(OP_LSS
, result
, a
, b
); break;
1781 case LEQ
: expr
= oberon_new_operator(OP_LEQ
, result
, a
, b
); break;
1782 case GREAT
: expr
= oberon_new_operator(OP_GRT
, result
, a
, b
); break;
1783 case GEQ
: expr
= oberon_new_operator(OP_GEQ
, result
, a
, b
); break;
1784 case OR
: expr
= oberon_new_operator(OP_LOGIC_OR
, result
, a
, b
); break;
1785 case AND
: expr
= oberon_new_operator(OP_LOGIC_AND
, result
, a
, b
); break;
1786 default: assert(0); break;
1790 else if(token
== SLASH
)
1792 if(oberon_is_set_type(a
-> result
) && oberon_is_set_type(b
-> result
))
1794 if(oberon_is_const(a
) && oberon_is_const(b
))
1796 int64_t x
= a
-> item
.integer
;
1797 int64_t y
= b
-> item
.integer
;
1798 expr
= oberon_make_set(ctx
, x
^ y
);
1802 result
= oberon_get_longer_type(ctx
, a
-> result
, b
-> result
);
1803 a
= oberon_cast_expr(ctx
, a
, result
);
1804 b
= oberon_cast_expr(ctx
, b
, result
);
1805 expr
= oberon_new_operator(OP_SYM_DIFFERENCE
, result
, a
, b
);
1810 result
= oberon_get_longer_real_type(ctx
, a
-> result
, b
-> result
);
1811 if(oberon_is_const(a
) && oberon_is_const(b
))
1813 double x
= a
-> item
.real
;
1814 double y
= b
-> item
.real
;
1815 expr
= oberon_make_real_typed(ctx
, x
/ y
, result
);
1819 a
= oberon_cast_expr(ctx
, a
, result
);
1820 b
= oberon_cast_expr(ctx
, b
, result
);
1821 expr
= oberon_new_operator(OP_DIV
, result
, a
, b
);
1827 result
= oberon_get_longer_type(ctx
, a
-> result
, b
-> result
);
1829 if(oberon_is_const(a
) && oberon_is_const(b
))
1831 if(oberon_is_set_type(result
))
1833 int64_t x
= a
-> item
.integer
;
1834 int64_t y
= b
-> item
.integer
;
1837 case PLUS
: expr
= oberon_make_set(ctx
, x
| y
); break;
1838 case MINUS
: expr
= oberon_make_set(ctx
, x
& ~y
); break;
1839 case STAR
: expr
= oberon_make_set(ctx
, x
& y
); break;
1840 default: assert(0); break;
1843 if(oberon_is_real_type(result
))
1845 double x
= a
-> item
.real
;
1846 double y
= b
-> item
.real
;
1849 case PLUS
: expr
= oberon_make_real_typed(ctx
, x
+ y
, result
); break;
1850 case MINUS
: expr
= oberon_make_real_typed(ctx
, x
- y
, result
); break;
1851 case STAR
: expr
= oberon_make_real_typed(ctx
, x
* y
, result
); break;
1852 default: assert(0); break;
1855 else if(oberon_is_integer_type(result
))
1857 int64_t x
= a
-> item
.integer
;
1858 int64_t y
= b
-> item
.integer
;
1861 case PLUS
: expr
= oberon_make_integer(ctx
, x
+ y
); break;
1862 case MINUS
: expr
= oberon_make_integer(ctx
, x
- y
); break;
1863 case STAR
: expr
= oberon_make_integer(ctx
, x
* y
); break;
1864 case DIV
: expr
= oberon_make_integer(ctx
, x
/ y
); break;
1865 case MOD
: expr
= oberon_make_integer(ctx
, x
% y
); break;
1866 default: assert(0); break;
1876 a
= oberon_cast_expr(ctx
, a
, result
);
1877 b
= oberon_cast_expr(ctx
, b
, result
);
1880 if(oberon_is_set_type(result
))
1885 expr
= oberon_new_operator(OP_UNION
, result
, a
, b
);
1888 expr
= oberon_new_operator(OP_DIFFERENCE
, result
, a
, b
);
1891 expr
= oberon_new_operator(OP_INTERSECTION
, result
, a
, b
);
1898 else if(oberon_is_number_type(result
))
1903 expr
= oberon_new_operator(OP_ADD
, result
, a
, b
);
1906 expr
= oberon_new_operator(OP_SUB
, result
, a
, b
);
1909 expr
= oberon_new_operator(OP_MUL
, result
, a
, b
);
1926 #define ISMULOP(x) \
1927 ((x) >= STAR && (x) <= AND)
1929 static oberon_expr_t
*
1930 oberon_term_expr(oberon_context_t
* ctx
)
1932 oberon_expr_t
* expr
;
1934 expr
= oberon_factor(ctx
);
1935 while(ISMULOP(ctx
-> token
))
1937 int token
= ctx
-> token
;
1938 oberon_read_token(ctx
);
1940 oberon_expr_t
* inter
= oberon_factor(ctx
);
1941 expr
= oberon_make_bin_op(ctx
, token
, expr
, inter
);
1947 #define ISADDOP(x) \
1948 ((x) >= PLUS && (x) <= OR)
1950 static oberon_expr_t
*
1951 oberon_simple_expr(oberon_context_t
* ctx
)
1953 oberon_expr_t
* expr
;
1956 if(ctx
-> token
== PLUS
)
1959 oberon_assert_token(ctx
, PLUS
);
1961 else if(ctx
-> token
== MINUS
)
1964 oberon_assert_token(ctx
, MINUS
);
1967 expr
= oberon_term_expr(ctx
);
1969 while(ISADDOP(ctx
-> token
))
1971 int token
= ctx
-> token
;
1972 oberon_read_token(ctx
);
1974 oberon_expr_t
* inter
= oberon_term_expr(ctx
);
1975 expr
= oberon_make_bin_op(ctx
, token
, expr
, inter
);
1980 expr
= oberon_make_unary_op(ctx
, MINUS
, expr
);
1986 #define ISRELATION(x) \
1987 ((x) >= EQUAL && (x) <= IS)
1989 static oberon_expr_t
*
1990 oberon_expr(oberon_context_t
* ctx
)
1992 oberon_expr_t
* expr
;
1994 expr
= oberon_simple_expr(ctx
);
1995 while(ISRELATION(ctx
-> token
))
1997 int token
= ctx
-> token
;
1998 oberon_read_token(ctx
);
2000 oberon_expr_t
* inter
= oberon_simple_expr(ctx
);
2001 expr
= oberon_make_bin_op(ctx
, token
, expr
, inter
);
2008 oberon_is_const(oberon_expr_t
* expr
)
2010 if(expr
-> is_item
== false)
2015 switch(expr
-> item
.mode
)
2037 oberon_check_const(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
2039 if(!oberon_is_const(expr
))
2041 oberon_error(ctx
, "const expression are required");
2045 static oberon_item_t
*
2046 oberon_const_expr(oberon_context_t
* ctx
)
2048 oberon_expr_t
* expr
;
2049 expr
= oberon_expr(ctx
);
2050 oberon_check_const(ctx
, expr
);
2051 return (oberon_item_t
*) expr
;
2054 // =======================================================================
2056 // =======================================================================
2058 static void oberon_decl_seq(oberon_context_t
* ctx
);
2059 static void oberon_statement_seq(oberon_context_t
* ctx
);
2060 static void oberon_initialize_decl(oberon_context_t
* ctx
);
2063 oberon_expect_token(oberon_context_t
* ctx
, int token
)
2065 if(ctx
-> token
!= token
)
2067 oberon_error(ctx
, "unexpected token %i (%i)", ctx
-> token
, token
);
2072 oberon_assert_token(oberon_context_t
* ctx
, int token
)
2074 oberon_expect_token(ctx
, token
);
2075 oberon_read_token(ctx
);
2079 oberon_assert_ident(oberon_context_t
* ctx
)
2081 oberon_expect_token(ctx
, IDENT
);
2082 char * ident
= ctx
-> string
;
2083 oberon_read_token(ctx
);
2088 oberon_def(oberon_context_t
* ctx
, int * export
, int * read_only
)
2090 switch(ctx
-> token
)
2093 oberon_assert_token(ctx
, STAR
);
2098 oberon_assert_token(ctx
, MINUS
);
2109 static oberon_object_t
*
2110 oberon_ident_def(oberon_context_t
* ctx
, int class, bool check_upscope
)
2115 oberon_object_t
* x
;
2117 name
= oberon_assert_ident(ctx
);
2118 oberon_def(ctx
, &export
, &read_only
);
2120 x
= oberon_define_object(ctx
-> decl
, name
, class, export
, read_only
, check_upscope
);
2125 oberon_ident_list(oberon_context_t
* ctx
, int class, bool check_upscope
, int * num
, oberon_object_t
** list
)
2128 *list
= oberon_ident_def(ctx
, class, check_upscope
);
2129 while(ctx
-> token
== COMMA
)
2131 oberon_assert_token(ctx
, COMMA
);
2132 oberon_ident_def(ctx
, class, check_upscope
);
2138 oberon_var_decl(oberon_context_t
* ctx
)
2141 oberon_object_t
* list
;
2142 oberon_type_t
* type
;
2143 type
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
2145 oberon_ident_list(ctx
, OBERON_CLASS_VAR
, false, &num
, &list
);
2146 oberon_assert_token(ctx
, COLON
);
2147 oberon_type(ctx
, &type
);
2149 oberon_object_t
* var
= list
;
2150 for(int i
= 0; i
< num
; i
++)
2157 static oberon_object_t
*
2158 oberon_fp_section(oberon_context_t
* ctx
, int * num_decl
)
2160 int class = OBERON_CLASS_PARAM
;
2161 if(ctx
-> token
== VAR
)
2163 oberon_read_token(ctx
);
2164 class = OBERON_CLASS_VAR_PARAM
;
2168 oberon_object_t
* list
;
2169 oberon_ident_list(ctx
, class, false, &num
, &list
);
2171 oberon_assert_token(ctx
, COLON
);
2173 oberon_type_t
* type
;
2174 type
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
2175 oberon_type(ctx
, &type
);
2177 oberon_object_t
* param
= list
;
2178 for(int i
= 0; i
< num
; i
++)
2180 param
-> type
= type
;
2181 param
= param
-> next
;
2188 #define ISFPSECTION \
2189 ((ctx -> token == VAR) || (ctx -> token == IDENT))
2192 oberon_formal_pars(oberon_context_t
* ctx
, oberon_type_t
* signature
)
2194 oberon_assert_token(ctx
, LPAREN
);
2198 signature
-> decl
= oberon_fp_section(ctx
, &signature
-> num_decl
);
2199 while(ctx
-> token
== SEMICOLON
)
2201 oberon_assert_token(ctx
, SEMICOLON
);
2202 oberon_fp_section(ctx
, &signature
-> num_decl
);
2206 oberon_assert_token(ctx
, RPAREN
);
2208 if(ctx
-> token
== COLON
)
2210 oberon_assert_token(ctx
, COLON
);
2212 oberon_object_t
* typeobj
;
2213 typeobj
= oberon_qualident(ctx
, NULL
, 1);
2214 if(typeobj
-> class != OBERON_CLASS_TYPE
)
2216 oberon_error(ctx
, "function result is not type");
2218 if(typeobj
-> type
-> class == OBERON_TYPE_RECORD
2219 || typeobj
-> type
-> class == OBERON_TYPE_ARRAY
)
2221 oberon_error(ctx
, "records or arrays could not be result of function");
2223 signature
-> base
= typeobj
-> type
;
2228 oberon_opt_formal_pars(oberon_context_t
* ctx
, oberon_type_t
** type
)
2230 oberon_type_t
* signature
;
2232 signature
-> class = OBERON_TYPE_PROCEDURE
;
2233 signature
-> num_decl
= 0;
2234 signature
-> base
= ctx
-> notype_type
;
2235 signature
-> decl
= NULL
;
2237 if(ctx
-> token
== LPAREN
)
2239 oberon_formal_pars(ctx
, signature
);
2244 oberon_compare_signatures(oberon_context_t
* ctx
, oberon_type_t
* a
, oberon_type_t
* b
)
2246 if(a
-> num_decl
!= b
-> num_decl
)
2248 oberon_error(ctx
, "number parameters not matched");
2251 int num_param
= a
-> num_decl
;
2252 oberon_object_t
* param_a
= a
-> decl
;
2253 oberon_object_t
* param_b
= b
-> decl
;
2254 for(int i
= 0; i
< num_param
; i
++)
2256 if(strcmp(param_a
-> name
, param_b
-> name
) != 0)
2258 oberon_error(ctx
, "param %i name not matched", i
+ 1);
2261 if(param_a
-> type
!= param_b
-> type
)
2263 oberon_error(ctx
, "param %i type not matched", i
+ 1);
2266 param_a
= param_a
-> next
;
2267 param_b
= param_b
-> next
;
2272 oberon_make_return(oberon_context_t
* ctx
, oberon_expr_t
* expr
)
2274 oberon_object_t
* proc
= ctx
-> decl
-> parent
;
2275 oberon_type_t
* result_type
= proc
-> type
-> base
;
2277 if(result_type
-> class == OBERON_TYPE_NOTYPE
)
2281 oberon_error(ctx
, "procedure has no result type");
2288 oberon_error(ctx
, "procedure requires expression on result");
2291 oberon_check_src(ctx
, expr
);
2292 oberon_check_assignment_compatible(ctx
, expr
, result_type
);
2293 expr
= oberon_cast_expr(ctx
, expr
, result_type
);
2296 proc
-> has_return
= 1;
2298 oberon_generate_return(ctx
, expr
);
2302 oberon_proc_decl_body(oberon_context_t
* ctx
, oberon_object_t
* proc
)
2304 oberon_assert_token(ctx
, SEMICOLON
);
2306 ctx
-> decl
= proc
-> scope
;
2308 oberon_decl_seq(ctx
);
2310 oberon_generate_begin_proc(ctx
, proc
);
2312 if(ctx
-> token
== BEGIN
)
2314 oberon_assert_token(ctx
, BEGIN
);
2315 oberon_statement_seq(ctx
);
2318 oberon_assert_token(ctx
, END
);
2319 char * name
= oberon_assert_ident(ctx
);
2320 if(strcmp(name
, proc
-> name
) != 0)
2322 oberon_error(ctx
, "procedure name not matched");
2325 if(proc
-> type
-> base
-> class == OBERON_TYPE_NOTYPE
2326 && proc
-> has_return
== 0)
2328 oberon_make_return(ctx
, NULL
);
2331 if(proc
-> has_return
== 0)
2333 oberon_error(ctx
, "procedure requires return");
2336 oberon_generate_end_proc(ctx
);
2337 oberon_close_scope(ctx
-> decl
);
2341 oberon_proc_decl(oberon_context_t
* ctx
)
2343 oberon_assert_token(ctx
, PROCEDURE
);
2346 if(ctx
-> token
== UPARROW
)
2348 oberon_assert_token(ctx
, UPARROW
);
2355 name
= oberon_assert_ident(ctx
);
2356 oberon_def(ctx
, &export
, &read_only
);
2358 oberon_scope_t
* proc_scope
;
2359 proc_scope
= oberon_open_scope(ctx
);
2360 ctx
-> decl
-> local
= 1;
2362 oberon_type_t
* signature
;
2363 signature
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
2364 oberon_opt_formal_pars(ctx
, &signature
);
2366 //oberon_initialize_decl(ctx);
2367 oberon_generator_init_type(ctx
, signature
);
2368 oberon_close_scope(ctx
-> decl
);
2370 oberon_object_t
* proc
;
2371 proc
= oberon_find_object(ctx
-> decl
, name
, 0);
2374 proc
= oberon_define_object(ctx
-> decl
, name
, OBERON_CLASS_PROC
, export
, read_only
, false);
2375 proc
-> type
= signature
;
2376 proc
-> scope
= proc_scope
;
2377 oberon_generator_init_proc(ctx
, proc
);
2381 if(proc
-> class != OBERON_CLASS_PROC
)
2383 oberon_error(ctx
, "mult definition");
2390 oberon_error(ctx
, "mult procedure definition");
2394 if(proc
-> export
!= export
|| proc
-> read_only
!= read_only
)
2396 oberon_error(ctx
, "export type not matched");
2399 oberon_compare_signatures(ctx
, proc
-> type
, signature
);
2402 proc_scope
-> parent
= proc
;
2403 oberon_object_t
* param
= proc_scope
-> list
-> next
;
2406 param
-> parent
= proc
;
2407 param
= param
-> next
;
2413 oberon_proc_decl_body(ctx
, proc
);
2418 oberon_const_decl(oberon_context_t
* ctx
)
2420 oberon_item_t
* value
;
2421 oberon_object_t
* constant
;
2423 constant
= oberon_ident_def(ctx
, OBERON_CLASS_CONST
, false);
2424 oberon_assert_token(ctx
, EQUAL
);
2425 value
= oberon_const_expr(ctx
);
2426 constant
-> value
= value
;
2430 oberon_make_array_type(oberon_context_t
* ctx
, oberon_expr_t
* size
, oberon_type_t
* base
, oberon_type_t
** type
)
2432 if(size
-> is_item
== 0)
2434 oberon_error(ctx
, "requires constant");
2437 if(size
-> item
.mode
!= MODE_INTEGER
)
2439 oberon_error(ctx
, "requires integer constant");
2442 oberon_type_t
* arr
;
2444 arr
-> class = OBERON_TYPE_ARRAY
;
2445 arr
-> size
= size
-> item
.integer
;
2450 oberon_qualident_type(oberon_context_t
* ctx
, oberon_type_t
** type
)
2453 oberon_object_t
* to
;
2455 to
= oberon_qualident(ctx
, &name
, 0);
2457 //name = oberon_assert_ident(ctx);
2458 //to = oberon_find_object(ctx -> decl, name, 0);
2462 if(to
-> class != OBERON_CLASS_TYPE
)
2464 oberon_error(ctx
, "not a type");
2469 to
= oberon_define_object(ctx
-> decl
, name
, OBERON_CLASS_TYPE
, false, false, false);
2470 to
-> type
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
2476 static void oberon_opt_formal_pars(oberon_context_t
* ctx
, oberon_type_t
** type
);
2479 * Правило граматики "type". Указатель type должен указывать на существующий объект!
2483 oberon_make_multiarray(oberon_context_t
* ctx
, oberon_expr_t
* sizes
, oberon_type_t
* base
, oberon_type_t
** type
)
2491 oberon_type_t
* dim
;
2492 dim
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
2494 oberon_make_multiarray(ctx
, sizes
-> next
, base
, &dim
);
2496 oberon_make_array_type(ctx
, sizes
, dim
, type
);
2500 oberon_make_open_array(oberon_context_t
* ctx
, oberon_type_t
* base
, oberon_type_t
* type
)
2502 type
-> class = OBERON_TYPE_ARRAY
;
2504 type
-> base
= base
;
2508 oberon_field_list(oberon_context_t
* ctx
, oberon_type_t
* rec
, oberon_scope_t
* modscope
)
2510 if(ctx
-> token
== IDENT
)
2513 oberon_object_t
* list
;
2514 oberon_type_t
* type
;
2515 type
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
2517 oberon_ident_list(ctx
, OBERON_CLASS_FIELD
, true, &num
, &list
);
2518 oberon_assert_token(ctx
, COLON
);
2520 oberon_scope_t
* current
= ctx
-> decl
;
2521 ctx
-> decl
= modscope
;
2522 oberon_type(ctx
, &type
);
2523 ctx
-> decl
= current
;
2525 oberon_object_t
* field
= list
;
2526 for(int i
= 0; i
< num
; i
++)
2528 field
-> type
= type
;
2529 field
= field
-> next
;
2532 rec
-> num_decl
+= num
;
2537 oberon_type_record_body(oberon_context_t
* ctx
, oberon_type_t
* rec
)
2539 oberon_scope_t
* modscope
= ctx
-> mod
-> decl
;
2540 oberon_scope_t
* oldscope
= ctx
-> decl
;
2541 ctx
-> decl
= modscope
;
2543 if(ctx
-> token
== LPAREN
)
2545 oberon_assert_token(ctx
, LPAREN
);
2547 oberon_object_t
* typeobj
;
2548 typeobj
= oberon_qualident(ctx
, NULL
, true);
2550 if(typeobj
-> class != OBERON_CLASS_TYPE
)
2552 oberon_error(ctx
, "base must be type");
2555 oberon_type_t
* base
= typeobj
-> type
;
2556 if(base
-> class == OBERON_TYPE_POINTER
)
2558 base
= base
-> base
;
2561 if(base
-> class != OBERON_TYPE_RECORD
)
2563 oberon_error(ctx
, "base must be record type");
2567 ctx
-> decl
= base
-> scope
;
2569 oberon_assert_token(ctx
, RPAREN
);
2576 oberon_scope_t
* this_scope
;
2577 this_scope
= oberon_open_scope(ctx
);
2578 this_scope
-> local
= true;
2579 this_scope
-> parent
= NULL
;
2580 this_scope
-> parent_type
= rec
;
2582 oberon_field_list(ctx
, rec
, modscope
);
2583 while(ctx
-> token
== SEMICOLON
)
2585 oberon_assert_token(ctx
, SEMICOLON
);
2586 oberon_field_list(ctx
, rec
, modscope
);
2589 rec
-> scope
= this_scope
;
2590 rec
-> decl
= this_scope
-> list
-> next
;
2591 ctx
-> decl
= oldscope
;
2595 oberon_type(oberon_context_t
* ctx
, oberon_type_t
** type
)
2597 if(ctx
-> token
== IDENT
)
2599 oberon_qualident_type(ctx
, type
);
2601 else if(ctx
-> token
== ARRAY
)
2603 oberon_assert_token(ctx
, ARRAY
);
2606 oberon_expr_t
* sizes
;
2608 if(ISEXPR(ctx
-> token
))
2610 oberon_expr_list(ctx
, &num_sizes
, &sizes
, 1);
2613 oberon_assert_token(ctx
, OF
);
2615 oberon_type_t
* base
;
2616 base
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
2617 oberon_type(ctx
, &base
);
2621 oberon_make_open_array(ctx
, base
, *type
);
2625 oberon_make_multiarray(ctx
, sizes
, base
, type
);
2628 else if(ctx
-> token
== RECORD
)
2630 oberon_type_t
* rec
;
2632 rec
-> class = OBERON_TYPE_RECORD
;
2633 rec
-> module
= ctx
-> mod
;
2635 oberon_assert_token(ctx
, RECORD
);
2636 oberon_type_record_body(ctx
, rec
);
2637 oberon_assert_token(ctx
, END
);
2641 else if(ctx
-> token
== POINTER
)
2643 oberon_assert_token(ctx
, POINTER
);
2644 oberon_assert_token(ctx
, TO
);
2646 oberon_type_t
* base
;
2647 base
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
2648 oberon_type(ctx
, &base
);
2650 oberon_type_t
* ptr
;
2652 ptr
-> class = OBERON_TYPE_POINTER
;
2655 else if(ctx
-> token
== PROCEDURE
)
2657 oberon_open_scope(ctx
);
2658 oberon_assert_token(ctx
, PROCEDURE
);
2659 oberon_opt_formal_pars(ctx
, type
);
2660 oberon_close_scope(ctx
-> decl
);
2664 oberon_error(ctx
, "invalid type declaration");
2669 oberon_type_decl(oberon_context_t
* ctx
)
2672 oberon_object_t
* newtype
;
2673 oberon_type_t
* type
;
2677 name
= oberon_assert_ident(ctx
);
2678 oberon_def(ctx
, &export
, &read_only
);
2680 newtype
= oberon_find_object(ctx
-> decl
, name
, 0);
2683 newtype
= oberon_define_object(ctx
-> decl
, name
, OBERON_CLASS_TYPE
, export
, read_only
, false);
2684 newtype
-> type
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
2685 assert(newtype
-> type
);
2689 if(newtype
-> class != OBERON_CLASS_TYPE
)
2691 oberon_error(ctx
, "mult definition");
2694 if(newtype
-> linked
)
2696 oberon_error(ctx
, "mult definition - already linked");
2699 newtype
-> export
= export
;
2700 newtype
-> read_only
= read_only
;
2703 oberon_assert_token(ctx
, EQUAL
);
2705 type
= newtype
-> type
;
2706 oberon_type(ctx
, &type
);
2708 if(type
-> class == OBERON_TYPE_NOTYPE
)
2710 oberon_error(ctx
, "recursive alias declaration");
2713 newtype
-> type
= type
;
2714 newtype
-> linked
= 1;
2717 static void oberon_prevent_recursive_object(oberon_context_t
* ctx
, oberon_object_t
* x
);
2718 static void oberon_prevent_recursive_type(oberon_context_t
* ctx
, oberon_type_t
* type
);
2721 oberon_prevent_recursive_pointer(oberon_context_t
* ctx
, oberon_type_t
* type
)
2723 if(type
-> class != OBERON_TYPE_POINTER
2724 && type
-> class != OBERON_TYPE_ARRAY
)
2729 if(type
-> recursive
)
2731 oberon_error(ctx
, "recursive pointer declaration");
2734 if(type
-> class == OBERON_TYPE_POINTER
2735 && type
-> base
-> class == OBERON_TYPE_POINTER
)
2737 oberon_error(ctx
, "attempt to make pointer to pointer");
2740 type
-> recursive
= 1;
2742 oberon_prevent_recursive_pointer(ctx
, type
-> base
);
2744 type
-> recursive
= 0;
2748 oberon_prevent_recursive_record(oberon_context_t
* ctx
, oberon_type_t
* type
)
2750 if(type
-> class != OBERON_TYPE_RECORD
)
2755 if(type
-> recursive
)
2757 oberon_error(ctx
, "recursive record declaration");
2760 type
-> recursive
= 1;
2764 oberon_prevent_recursive_record(ctx
, type
-> base
);
2767 int num_fields
= type
-> num_decl
;
2768 oberon_object_t
* field
= type
-> decl
;
2769 for(int i
= 0; i
< num_fields
; i
++)
2771 oberon_prevent_recursive_object(ctx
, field
);
2772 field
= field
-> next
;
2775 type
-> recursive
= 0;
2778 oberon_prevent_recursive_procedure(oberon_context_t
* ctx
, oberon_type_t
* type
)
2780 if(type
-> class != OBERON_TYPE_PROCEDURE
)
2785 if(type
-> recursive
)
2787 oberon_error(ctx
, "recursive procedure declaration");
2790 type
-> recursive
= 1;
2792 int num_fields
= type
-> num_decl
;
2793 oberon_object_t
* field
= type
-> decl
;
2794 for(int i
= 0; i
< num_fields
; i
++)
2796 oberon_prevent_recursive_object(ctx
, field
);
2797 field
= field
-> next
;
2800 type
-> recursive
= 0;
2804 oberon_prevent_recursive_array(oberon_context_t
* ctx
, oberon_type_t
* type
)
2806 if(type
-> class != OBERON_TYPE_ARRAY
)
2811 if(type
-> recursive
)
2813 oberon_error(ctx
, "recursive array declaration");
2816 type
-> recursive
= 1;
2818 oberon_prevent_recursive_type(ctx
, type
-> base
);
2820 type
-> recursive
= 0;
2824 oberon_prevent_recursive_type(oberon_context_t
* ctx
, oberon_type_t
* type
)
2826 if(type
-> class == OBERON_TYPE_POINTER
)
2828 oberon_prevent_recursive_pointer(ctx
, type
);
2830 else if(type
-> class == OBERON_TYPE_RECORD
)
2832 oberon_prevent_recursive_record(ctx
, type
);
2834 else if(type
-> class == OBERON_TYPE_ARRAY
)
2836 oberon_prevent_recursive_array(ctx
, type
);
2838 else if(type
-> class == OBERON_TYPE_PROCEDURE
)
2840 oberon_prevent_recursive_procedure(ctx
, type
);
2845 oberon_prevent_recursive_object(oberon_context_t
* ctx
, oberon_object_t
* x
)
2849 case OBERON_CLASS_VAR
:
2850 case OBERON_CLASS_TYPE
:
2851 case OBERON_CLASS_PARAM
:
2852 case OBERON_CLASS_VAR_PARAM
:
2853 case OBERON_CLASS_FIELD
:
2854 oberon_prevent_recursive_type(ctx
, x
-> type
);
2856 case OBERON_CLASS_CONST
:
2857 case OBERON_CLASS_PROC
:
2858 case OBERON_CLASS_MODULE
:
2861 oberon_error(ctx
, "oberon_prevent_recursive_object: wat");
2867 oberon_prevent_recursive_decl(oberon_context_t
* ctx
)
2869 oberon_object_t
* x
= ctx
-> decl
-> list
-> next
;
2873 oberon_prevent_recursive_object(ctx
, x
);
2878 static void oberon_initialize_object(oberon_context_t
* ctx
, oberon_object_t
* x
);
2879 static void oberon_initialize_type(oberon_context_t
* ctx
, oberon_type_t
* type
);
2882 oberon_initialize_record_fields(oberon_context_t
* ctx
, oberon_type_t
* type
)
2884 if(type
-> class != OBERON_TYPE_RECORD
)
2889 int num_fields
= type
-> num_decl
;
2890 oberon_object_t
* field
= type
-> decl
;
2891 for(int i
= 0; i
< num_fields
; i
++)
2893 if(field
-> type
-> class == OBERON_TYPE_POINTER
)
2895 oberon_initialize_type(ctx
, field
-> type
);
2898 oberon_initialize_object(ctx
, field
);
2899 field
= field
-> next
;
2902 oberon_generator_init_record(ctx
, type
);
2906 oberon_initialize_type(oberon_context_t
* ctx
, oberon_type_t
* type
)
2908 if(type
-> class == OBERON_TYPE_NOTYPE
)
2910 oberon_error(ctx
, "undeclarated type");
2913 if(type
-> initialized
)
2918 type
-> initialized
= 1;
2920 if(type
-> class == OBERON_TYPE_POINTER
)
2922 oberon_initialize_type(ctx
, type
-> base
);
2923 oberon_generator_init_type(ctx
, type
);
2925 else if(type
-> class == OBERON_TYPE_ARRAY
)
2927 if(type
-> size
!= 0)
2929 if(type
-> base
-> class == OBERON_TYPE_ARRAY
)
2931 if(type
-> base
-> size
== 0)
2933 oberon_error(ctx
, "open array not allowed as array element");
2938 oberon_initialize_type(ctx
, type
-> base
);
2939 oberon_generator_init_type(ctx
, type
);
2941 else if(type
-> class == OBERON_TYPE_RECORD
)
2943 oberon_generator_init_type(ctx
, type
);
2944 oberon_initialize_record_fields(ctx
, type
);
2946 else if(type
-> class == OBERON_TYPE_PROCEDURE
)
2948 int num_fields
= type
-> num_decl
;
2949 oberon_object_t
* field
= type
-> decl
;
2950 for(int i
= 0; i
< num_fields
; i
++)
2952 //oberon_initialize_object(ctx, field);
2953 oberon_initialize_type(ctx
, field
-> type
);
2954 field
= field
-> next
;
2957 oberon_generator_init_type(ctx
, type
);
2961 oberon_generator_init_type(ctx
, type
);
2966 oberon_initialize_object(oberon_context_t
* ctx
, oberon_object_t
* x
)
2968 if(x
-> initialized
)
2973 x
-> initialized
= 1;
2977 case OBERON_CLASS_TYPE
:
2978 oberon_initialize_type(ctx
, x
-> type
);
2980 case OBERON_CLASS_VAR
:
2981 case OBERON_CLASS_FIELD
:
2982 if(x
-> type
-> class == OBERON_TYPE_ARRAY
)
2984 if(x
-> type
-> size
== 0)
2986 oberon_error(ctx
, "open array not allowed as variable or field");
2989 oberon_initialize_type(ctx
, x
-> type
);
2990 oberon_generator_init_var(ctx
, x
);
2992 case OBERON_CLASS_PARAM
:
2993 case OBERON_CLASS_VAR_PARAM
:
2994 oberon_initialize_type(ctx
, x
-> type
);
2995 oberon_generator_init_var(ctx
, x
);
2997 case OBERON_CLASS_CONST
:
2998 case OBERON_CLASS_PROC
:
2999 case OBERON_CLASS_MODULE
:
3002 oberon_error(ctx
, "oberon_initialize_object: wat");
3008 oberon_initialize_decl(oberon_context_t
* ctx
)
3010 oberon_object_t
* x
= ctx
-> decl
-> list
;
3014 oberon_initialize_object(ctx
, x
-> next
);
3020 oberon_prevent_undeclarated_procedures(oberon_context_t
* ctx
)
3022 oberon_object_t
* x
= ctx
-> decl
-> list
;
3026 if(x
-> next
-> class == OBERON_CLASS_PROC
)
3028 if(x
-> next
-> linked
== 0)
3030 oberon_error(ctx
, "unresolved forward declaration");
3038 oberon_decl_seq(oberon_context_t
* ctx
)
3040 if(ctx
-> token
== CONST
)
3042 oberon_assert_token(ctx
, CONST
);
3043 while(ctx
-> token
== IDENT
)
3045 oberon_const_decl(ctx
);
3046 oberon_assert_token(ctx
, SEMICOLON
);
3050 if(ctx
-> token
== TYPE
)
3052 oberon_assert_token(ctx
, TYPE
);
3053 while(ctx
-> token
== IDENT
)
3055 oberon_type_decl(ctx
);
3056 oberon_assert_token(ctx
, SEMICOLON
);
3060 if(ctx
-> token
== VAR
)
3062 oberon_assert_token(ctx
, VAR
);
3063 while(ctx
-> token
== IDENT
)
3065 oberon_var_decl(ctx
);
3066 oberon_assert_token(ctx
, SEMICOLON
);
3070 oberon_prevent_recursive_decl(ctx
);
3071 oberon_initialize_decl(ctx
);
3073 while(ctx
-> token
== PROCEDURE
)
3075 oberon_proc_decl(ctx
);
3076 oberon_assert_token(ctx
, SEMICOLON
);
3079 oberon_prevent_undeclarated_procedures(ctx
);
3082 static oberon_expr_t
*
3083 oberon_make_temp_var_item(oberon_context_t
* ctx
, oberon_type_t
* type
)
3085 oberon_object_t
* x
;
3086 oberon_expr_t
* expr
;
3088 x
= oberon_create_object(ctx
-> decl
, "TEMP", OBERON_CLASS_VAR
, false, false);
3091 oberon_generator_init_temp_var(ctx
, x
);
3093 expr
= oberon_new_item(MODE_VAR
, type
, false);
3094 expr
-> item
.var
= x
;
3099 oberon_statement_seq(oberon_context_t
* ctx
);
3102 oberon_assign(oberon_context_t
* ctx
, oberon_expr_t
* src
, oberon_expr_t
* dst
)
3104 oberon_check_dst(ctx
, dst
);
3105 oberon_check_assignment_compatible(ctx
, src
, dst
-> result
);
3107 if(oberon_is_array_of_char_type(dst
-> result
)
3108 && oberon_is_string_type(src
-> result
))
3111 oberon_make_copy_call(ctx
, 2, src
);
3115 src
= oberon_cast_expr(ctx
, src
, dst
-> result
);
3116 oberon_generate_assign(ctx
, src
, dst
);
3120 static oberon_expr_t
*
3121 oberon_case_labels(oberon_context_t
* ctx
, oberon_expr_t
* val
)
3125 oberon_expr_t
* cond
;
3126 oberon_expr_t
* cond2
;
3128 e1
= (oberon_expr_t
*) oberon_const_expr(ctx
);
3131 if(ctx
-> token
== DOTDOT
)
3133 oberon_assert_token(ctx
, DOTDOT
);
3134 e2
= (oberon_expr_t
*) oberon_const_expr(ctx
);
3140 cond
= oberon_make_bin_op(ctx
, EQUAL
, val
, e1
);
3144 /* val >= e1 && val <= e2 */
3145 cond
= oberon_make_bin_op(ctx
, GEQ
, val
, e1
);
3146 cond2
= oberon_make_bin_op(ctx
, LEQ
, val
, e2
);
3147 cond
= oberon_make_bin_op(ctx
, AND
, cond
, cond2
);
3154 oberon_case(oberon_context_t
* ctx
, oberon_expr_t
* val
, gen_label_t
* end
)
3156 oberon_expr_t
* cond
;
3157 oberon_expr_t
* cond2
;
3158 gen_label_t
* this_end
;
3160 if(ISEXPR(ctx
-> token
))
3162 this_end
= oberon_generator_reserve_label(ctx
);
3164 cond
= oberon_case_labels(ctx
, val
);
3165 while(ctx
-> token
== COMMA
)
3167 oberon_assert_token(ctx
, COMMA
);
3169 cond2
= oberon_case_labels(ctx
, val
);
3170 cond
= oberon_make_bin_op(ctx
, OR
, cond
, cond2
);
3172 oberon_assert_token(ctx
, COLON
);
3174 oberon_generate_branch(ctx
, cond
, false, this_end
);
3175 oberon_statement_seq(ctx
);
3176 oberon_generate_goto(ctx
, end
);
3178 oberon_generate_label(ctx
, this_end
);
3183 oberon_case_statement(oberon_context_t
* ctx
)
3185 oberon_expr_t
* val
;
3186 oberon_expr_t
* expr
;
3189 end
= oberon_generator_reserve_label(ctx
);
3191 oberon_assert_token(ctx
, CASE
);
3192 expr
= oberon_expr(ctx
);
3193 val
= oberon_make_temp_var_item(ctx
, expr
-> result
);
3194 oberon_assign(ctx
, expr
, val
);
3195 oberon_assert_token(ctx
, OF
);
3196 oberon_case(ctx
, val
, end
);
3197 while(ctx
-> token
== BAR
)
3199 oberon_assert_token(ctx
, BAR
);
3200 oberon_case(ctx
, val
, end
);
3203 if(ctx
-> token
== ELSE
)
3205 oberon_assert_token(ctx
, ELSE
);
3206 oberon_statement_seq(ctx
);
3210 oberon_generate_trap(ctx
, -1);
3213 oberon_generate_label(ctx
, end
);
3214 oberon_assert_token(ctx
, END
);
3218 oberon_with_guard_do(oberon_context_t
* ctx
, gen_label_t
* end
)
3220 oberon_expr_t
* val
;
3221 oberon_expr_t
* var
;
3222 oberon_expr_t
* type
;
3223 oberon_expr_t
* cond
;
3224 oberon_expr_t
* cast
;
3225 oberon_type_t
* old_type
;
3226 gen_var_t
* old_var
;
3227 gen_label_t
* this_end
;
3229 this_end
= oberon_generator_reserve_label(ctx
);
3231 var
= oberon_qualident_expr(ctx
);
3232 oberon_assert_token(ctx
, COLON
);
3233 type
= oberon_qualident_expr(ctx
);
3234 cond
= oberon_make_bin_op(ctx
, IS
, var
, type
);
3236 oberon_assert_token(ctx
, DO
);
3237 oberon_generate_branch(ctx
, cond
, false, this_end
);
3239 /* Сохраняем ссылку во временной переменной */
3240 val
= oberon_make_temp_var_item(ctx
, type
-> result
);
3241 //cast = oberno_make_record_cast(ctx, var, type -> result);
3242 cast
= oberon_cast_expr(ctx
, var
, type
-> result
);
3243 oberon_assign(ctx
, cast
, val
);
3244 /* Подменяем тип у оригинальной переменной */
3245 old_type
= var
-> item
.var
-> type
;
3246 var
-> item
.var
-> type
= type
-> result
;
3247 /* Подменяем ссылку на переменную */
3248 old_var
= var
-> item
.var
-> gen_var
;
3249 var
-> item
.var
-> gen_var
= val
-> item
.var
-> gen_var
;
3251 oberon_statement_seq(ctx
);
3252 oberon_generate_goto(ctx
, end
);
3253 oberon_generate_label(ctx
, this_end
);
3255 /* Возвращаем исходное состояние */
3256 var
-> item
.var
-> gen_var
= old_var
;
3257 var
-> item
.var
-> type
= old_type
;
3261 oberon_with_statement(oberon_context_t
* ctx
)
3264 end
= oberon_generator_reserve_label(ctx
);
3266 oberon_assert_token(ctx
, WITH
);
3267 oberon_with_guard_do(ctx
, end
);
3268 while(ctx
-> token
== BAR
)
3270 oberon_assert_token(ctx
, BAR
);
3271 oberon_with_guard_do(ctx
, end
);
3274 if(ctx
-> token
== ELSE
)
3276 oberon_assert_token(ctx
, ELSE
);
3277 oberon_statement_seq(ctx
);
3281 oberon_generate_trap(ctx
, -2);
3284 oberon_generate_label(ctx
, end
);
3285 oberon_assert_token(ctx
, END
);
3289 oberon_statement(oberon_context_t
* ctx
)
3291 oberon_expr_t
* item1
;
3292 oberon_expr_t
* item2
;
3294 if(ctx
-> token
== IDENT
)
3296 item1
= oberon_designator(ctx
);
3297 if(ctx
-> token
== ASSIGN
)
3299 oberon_assert_token(ctx
, ASSIGN
);
3300 item2
= oberon_expr(ctx
);
3301 oberon_assign(ctx
, item2
, item1
);
3305 oberon_opt_proc_parens(ctx
, item1
);
3308 else if(ctx
-> token
== IF
)
3312 oberon_expr_t
* cond
;
3314 els
= oberon_generator_reserve_label(ctx
);
3315 end
= oberon_generator_reserve_label(ctx
);
3317 oberon_assert_token(ctx
, IF
);
3318 cond
= oberon_expr(ctx
);
3319 if(cond
-> result
-> class != OBERON_TYPE_BOOLEAN
)
3321 oberon_error(ctx
, "condition must be boolean");
3323 oberon_assert_token(ctx
, THEN
);
3324 oberon_generate_branch(ctx
, cond
, false, els
);
3325 oberon_statement_seq(ctx
);
3326 oberon_generate_goto(ctx
, end
);
3327 oberon_generate_label(ctx
, els
);
3329 while(ctx
-> token
== ELSIF
)
3331 els
= oberon_generator_reserve_label(ctx
);
3333 oberon_assert_token(ctx
, ELSIF
);
3334 cond
= oberon_expr(ctx
);
3335 if(cond
-> result
-> class != OBERON_TYPE_BOOLEAN
)
3337 oberon_error(ctx
, "condition must be boolean");
3339 oberon_assert_token(ctx
, THEN
);
3340 oberon_generate_branch(ctx
, cond
, false, els
);
3341 oberon_statement_seq(ctx
);
3342 oberon_generate_goto(ctx
, end
);
3343 oberon_generate_label(ctx
, els
);
3346 if(ctx
-> token
== ELSE
)
3348 oberon_assert_token(ctx
, ELSE
);
3349 oberon_statement_seq(ctx
);
3352 oberon_generate_label(ctx
, end
);
3353 oberon_assert_token(ctx
, END
);
3355 else if(ctx
-> token
== WHILE
)
3357 gen_label_t
* begin
;
3359 oberon_expr_t
* cond
;
3361 begin
= oberon_generator_reserve_label(ctx
);
3362 end
= oberon_generator_reserve_label(ctx
);
3364 oberon_assert_token(ctx
, WHILE
);
3365 oberon_generate_label(ctx
, begin
);
3366 cond
= oberon_expr(ctx
);
3367 if(cond
-> result
-> class != OBERON_TYPE_BOOLEAN
)
3369 oberon_error(ctx
, "condition must be boolean");
3371 oberon_generate_branch(ctx
, cond
, false, end
);
3373 oberon_assert_token(ctx
, DO
);
3374 oberon_statement_seq(ctx
);
3375 oberon_generate_goto(ctx
, begin
);
3377 oberon_assert_token(ctx
, END
);
3378 oberon_generate_label(ctx
, end
);
3380 else if(ctx
-> token
== REPEAT
)
3382 gen_label_t
* begin
;
3383 oberon_expr_t
* cond
;
3385 begin
= oberon_generator_reserve_label(ctx
);
3386 oberon_generate_label(ctx
, begin
);
3387 oberon_assert_token(ctx
, REPEAT
);
3389 oberon_statement_seq(ctx
);
3391 oberon_assert_token(ctx
, UNTIL
);
3393 cond
= oberon_expr(ctx
);
3394 if(cond
-> result
-> class != OBERON_TYPE_BOOLEAN
)
3396 oberon_error(ctx
, "condition must be boolean");
3399 oberon_generate_branch(ctx
, cond
, true, begin
);
3401 else if(ctx
-> token
== FOR
)
3403 oberon_expr_t
* from
;
3404 oberon_expr_t
* index
;
3406 oberon_expr_t
* bound
;
3408 oberon_expr_t
* cond
;
3409 oberon_expr_t
* count
;
3410 gen_label_t
* begin
;
3415 begin
= oberon_generator_reserve_label(ctx
);
3416 end
= oberon_generator_reserve_label(ctx
);
3418 oberon_assert_token(ctx
, FOR
);
3419 iname
= oberon_assert_ident(ctx
);
3420 index
= oberon_ident_item(ctx
, iname
);
3421 oberon_assert_token(ctx
, ASSIGN
);
3422 from
= oberon_expr(ctx
);
3423 oberon_assert_token(ctx
, TO
);
3424 bound
= oberon_make_temp_var_item(ctx
, index
-> result
);
3425 to
= oberon_expr(ctx
);
3426 oberon_assign(ctx
, to
, bound
); // сначала temp
3427 oberon_assign(ctx
, from
, index
); // потом i
3428 if(ctx
-> token
== BY
)
3430 oberon_assert_token(ctx
, BY
);
3431 by
= (oberon_expr_t
*) oberon_const_expr(ctx
);
3435 by
= oberon_make_integer(ctx
, 1);
3438 if(by
-> result
-> class != OBERON_TYPE_INTEGER
)
3440 oberon_error(ctx
, "must be integer");
3443 if(by
-> item
.integer
> 0)
3447 else if(by
-> item
.integer
< 0)
3453 oberon_error(ctx
, "zero step not allowed");
3456 oberon_assert_token(ctx
, DO
);
3457 oberon_generate_label(ctx
, begin
);
3458 cond
= oberon_make_bin_op(ctx
, op
, index
, bound
);
3459 oberon_generate_branch(ctx
, cond
, false, end
);
3460 oberon_statement_seq(ctx
);
3461 count
= oberon_make_bin_op(ctx
, PLUS
, index
, by
);
3462 oberon_assign(ctx
, count
, index
);
3463 oberon_generate_goto(ctx
, begin
);
3464 oberon_generate_label(ctx
, end
);
3465 oberon_assert_token(ctx
, END
);
3467 else if(ctx
-> token
== LOOP
)
3469 gen_label_t
* begin
;
3472 begin
= oberon_generator_reserve_label(ctx
);
3473 end
= oberon_generator_reserve_label(ctx
);
3475 oberon_open_scope(ctx
);
3476 oberon_assert_token(ctx
, LOOP
);
3477 oberon_generate_label(ctx
, begin
);
3478 ctx
-> decl
-> exit_label
= end
;
3479 oberon_statement_seq(ctx
);
3480 oberon_generate_goto(ctx
, begin
);
3481 oberon_generate_label(ctx
, end
);
3482 oberon_assert_token(ctx
, END
);
3483 oberon_close_scope(ctx
-> decl
);
3485 else if(ctx
-> token
== EXIT
)
3487 oberon_assert_token(ctx
, EXIT
);
3488 if(ctx
-> decl
-> exit_label
== NULL
)
3490 oberon_error(ctx
, "not in LOOP-END");
3492 oberon_generate_goto(ctx
, ctx
-> decl
-> exit_label
);
3494 else if(ctx
-> token
== CASE
)
3496 oberon_case_statement(ctx
);
3498 else if(ctx
-> token
== WITH
)
3500 oberon_with_statement(ctx
);
3502 else if(ctx
-> token
== RETURN
)
3504 oberon_assert_token(ctx
, RETURN
);
3505 if(ISEXPR(ctx
-> token
))
3507 oberon_expr_t
* expr
;
3508 expr
= oberon_expr(ctx
);
3509 oberon_make_return(ctx
, expr
);
3513 oberon_make_return(ctx
, NULL
);
3519 oberon_statement_seq(oberon_context_t
* ctx
)
3521 oberon_statement(ctx
);
3522 while(ctx
-> token
== SEMICOLON
)
3524 oberon_assert_token(ctx
, SEMICOLON
);
3525 oberon_statement(ctx
);
3530 oberon_import_module(oberon_context_t
* ctx
, char * alias
, char * name
)
3532 oberon_module_t
* m
= ctx
-> module_list
;
3533 while(m
&& strcmp(m
-> name
, name
) != 0)
3541 code
= ctx
-> import_module(name
);
3544 oberon_error(ctx
, "no such module");
3547 m
= oberon_compile_module(ctx
, code
);
3553 oberon_error(ctx
, "cyclic module import");
3556 oberon_object_t
* ident
;
3557 ident
= oberon_define_object(ctx
-> decl
, alias
, OBERON_CLASS_MODULE
, false, false, false);
3558 ident
-> module
= m
;
3562 oberon_import_decl(oberon_context_t
* ctx
)
3567 alias
= name
= oberon_assert_ident(ctx
);
3568 if(ctx
-> token
== ASSIGN
)
3570 oberon_assert_token(ctx
, ASSIGN
);
3571 name
= oberon_assert_ident(ctx
);
3574 oberon_import_module(ctx
, alias
, name
);
3578 oberon_import_list(oberon_context_t
* ctx
)
3580 oberon_assert_token(ctx
, IMPORT
);
3582 oberon_import_decl(ctx
);
3583 while(ctx
-> token
== COMMA
)
3585 oberon_assert_token(ctx
, COMMA
);
3586 oberon_import_decl(ctx
);
3589 oberon_assert_token(ctx
, SEMICOLON
);
3593 oberon_parse_module(oberon_context_t
* ctx
)
3597 oberon_read_token(ctx
);
3599 oberon_assert_token(ctx
, MODULE
);
3600 name1
= oberon_assert_ident(ctx
);
3601 oberon_assert_token(ctx
, SEMICOLON
);
3602 ctx
-> mod
-> name
= name1
;
3604 oberon_generator_init_module(ctx
, ctx
-> mod
);
3606 if(ctx
-> token
== IMPORT
)
3608 oberon_import_list(ctx
);
3611 oberon_decl_seq(ctx
);
3613 oberon_generate_begin_module(ctx
);
3614 if(ctx
-> token
== BEGIN
)
3616 oberon_assert_token(ctx
, BEGIN
);
3617 oberon_statement_seq(ctx
);
3619 oberon_generate_end_module(ctx
);
3621 oberon_assert_token(ctx
, END
);
3622 name2
= oberon_assert_ident(ctx
);
3623 oberon_expect_token(ctx
, DOT
);
3625 if(strcmp(name1
, name2
) != 0)
3627 oberon_error(ctx
, "module name not matched");
3630 oberon_generator_fini_module(ctx
-> mod
);
3633 // =======================================================================
3635 // =======================================================================
3637 static oberon_expr_t
*
3638 oberon_make_min_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
3642 oberon_error(ctx
, "too few arguments");
3647 oberon_error(ctx
, "too mach arguments");
3650 oberon_expr_t
* arg
;
3653 if(!oberon_is_type_expr(arg
))
3655 oberon_error(ctx
, "MIN accept only type");
3658 oberon_expr_t
* expr
;
3659 int bits
= arg
-> result
-> size
* 8;
3660 switch(arg
-> result
-> class)
3662 case OBERON_TYPE_INTEGER
:
3663 expr
= oberon_make_integer(ctx
, -powl(2, bits
- 1));
3665 case OBERON_TYPE_BOOLEAN
:
3666 expr
= oberon_make_boolean(ctx
, false);
3668 case OBERON_TYPE_CHAR
:
3669 expr
= oberon_make_char(ctx
, 0);
3671 case OBERON_TYPE_REAL
:
3672 expr
= oberon_make_real_typed(ctx
, (bits
<= 32) ? (-FLT_MAX
) : (-DBL_MAX
), arg
-> result
);
3674 case OBERON_TYPE_SET
:
3675 expr
= oberon_make_integer(ctx
, 0);
3678 oberon_error(ctx
, "allowed only basic types");
3685 static oberon_expr_t
*
3686 oberon_make_max_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
3690 oberon_error(ctx
, "too few arguments");
3695 oberon_error(ctx
, "too mach arguments");
3698 oberon_expr_t
* arg
;
3701 if(!oberon_is_type_expr(arg
))
3703 oberon_error(ctx
, "MAX accept only type");
3706 oberon_expr_t
* expr
;
3707 int bits
= arg
-> result
-> size
* 8;
3708 switch(arg
-> result
-> class)
3710 case OBERON_TYPE_INTEGER
:
3711 expr
= oberon_make_integer(ctx
, powl(2, bits
- 1) - 1);
3713 case OBERON_TYPE_BOOLEAN
:
3714 expr
= oberon_make_boolean(ctx
, true);
3716 case OBERON_TYPE_CHAR
:
3717 expr
= oberon_make_char(ctx
, powl(2, bits
) - 1);
3719 case OBERON_TYPE_REAL
:
3720 expr
= oberon_make_real_typed(ctx
, (bits
<= 32) ? (FLT_MAX
) : (DBL_MAX
), arg
-> result
);
3722 case OBERON_TYPE_SET
:
3723 expr
= oberon_make_integer(ctx
, bits
);
3726 oberon_error(ctx
, "allowed only basic types");
3733 static oberon_expr_t
*
3734 oberon_make_size_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
3738 oberon_error(ctx
, "too few arguments");
3743 oberon_error(ctx
, "too mach arguments");
3746 oberon_expr_t
* arg
;
3748 if(!oberon_is_type_expr(arg
))
3750 oberon_error(ctx
, "SIZE accept only type");
3754 oberon_expr_t
* expr
;
3755 oberon_type_t
* type
= arg
-> result
;
3756 switch(type
-> class)
3758 case OBERON_TYPE_INTEGER
:
3759 case OBERON_TYPE_BOOLEAN
:
3760 case OBERON_TYPE_REAL
:
3761 case OBERON_TYPE_CHAR
:
3762 case OBERON_TYPE_SET
:
3763 size
= type
-> size
;
3766 oberon_error(ctx
, "TODO SIZE");
3770 expr
= oberon_make_integer(ctx
, size
);
3774 static oberon_expr_t
*
3775 oberon_make_abs_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
3779 oberon_error(ctx
, "too few arguments");
3784 oberon_error(ctx
, "too mach arguments");
3787 oberon_expr_t
* arg
;
3789 oberon_check_src(ctx
, arg
);
3791 if(oberon_is_number_type(arg
-> result
))
3793 oberon_error(ctx
, "ABS accepts only numbers");
3796 oberon_expr_t
* expr
;
3797 if(oberon_is_const(arg
))
3799 if(oberon_is_real_type(arg
-> result
))
3801 double x
= arg
-> item
.real
;
3802 expr
= oberon_make_real(ctx
, fabsl(x
), arg
-> result
);
3806 int64_t x
= arg
-> item
.integer
;
3807 expr
= oberon_make_integer(ctx
, llabs(x
));
3812 expr
= oberon_new_operator(OP_ABS
, arg
-> result
, arg
, NULL
);
3818 oberon_make_inc_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
3822 oberon_error(ctx
, "too few arguments");
3827 oberon_error(ctx
, "too mach arguments");
3830 oberon_expr_t
* dst
;
3832 oberon_check_dst(ctx
, dst
);
3834 if(!oberon_is_integer_type(dst
-> result
))
3836 oberon_error(ctx
, "expect integer");
3839 oberon_expr_t
* expr
;
3840 expr
= oberon_make_bin_op(ctx
, PLUS
, dst
, oberon_make_integer(ctx
, 1));
3841 oberon_assign(ctx
, expr
, dst
);
3845 oberon_make_incl_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
3849 oberon_error(ctx
, "too few arguments");
3854 oberon_error(ctx
, "too mach arguments");
3857 oberon_expr_t
* dst
;
3859 oberon_check_dst(ctx
, dst
);
3861 if(!oberon_is_set_type(dst
-> result
))
3863 oberon_error(ctx
, "expect integer");
3867 x
= list_args
-> next
;
3868 oberon_check_src(ctx
, x
);
3870 if(!oberon_is_integer_type(x
-> result
))
3872 oberon_error(ctx
, "expect integer");
3875 oberon_expr_t
* expr
;
3876 expr
= oberon_make_bin_op(ctx
, PLUS
, dst
, oberon_new_operator(OP_RANGE
, dst
-> result
, x
, NULL
));
3877 oberon_assign(ctx
, expr
, dst
);
3881 oberon_make_excl_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
3885 oberon_error(ctx
, "too few arguments");
3890 oberon_error(ctx
, "too mach arguments");
3893 oberon_expr_t
* dst
;
3895 oberon_check_dst(ctx
, dst
);
3897 if(!oberon_is_set_type(dst
-> result
))
3899 oberon_error(ctx
, "expect integer");
3903 x
= list_args
-> next
;
3904 oberon_check_src(ctx
, x
);
3906 if(!oberon_is_integer_type(x
-> result
))
3908 oberon_error(ctx
, "expect integer");
3911 oberon_expr_t
* expr
;
3912 expr
= oberon_make_bin_op(ctx
, MINUS
, dst
, oberon_new_operator(OP_RANGE
, dst
-> result
, x
, NULL
));
3913 oberon_assign(ctx
, expr
, dst
);
3917 oberon_make_dec_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
3921 oberon_error(ctx
, "too few arguments");
3926 oberon_error(ctx
, "too mach arguments");
3929 oberon_expr_t
* dst
;
3931 oberon_check_dst(ctx
, dst
);
3933 if(!oberon_is_integer_type(dst
-> result
))
3935 oberon_error(ctx
, "expect integer");
3938 oberon_expr_t
* expr
;
3939 expr
= oberon_make_bin_op(ctx
, MINUS
, dst
, oberon_make_integer(ctx
, 1));
3940 oberon_assign(ctx
, expr
, dst
);
3944 oberon_make_new_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
3948 oberon_error(ctx
, "too few arguments");
3951 oberon_expr_t
* dst
;
3953 oberon_check_dst(ctx
, dst
);
3955 oberon_type_t
* type
;
3956 type
= dst
-> result
;
3958 if(type
-> class != OBERON_TYPE_POINTER
)
3960 oberon_error(ctx
, "not a pointer");
3963 type
= type
-> base
;
3965 oberon_expr_t
* src
;
3966 src
= oberon_new_item(MODE_NEW
, dst
-> result
, 0);
3967 src
-> item
.num_args
= 0;
3968 src
-> item
.args
= NULL
;
3971 if(type
-> class == OBERON_TYPE_ARRAY
)
3973 if(type
-> size
== 0)
3975 oberon_type_t
* x
= type
;
3976 while(x
-> class == OBERON_TYPE_ARRAY
)
3986 if(num_args
< max_args
)
3988 oberon_error(ctx
, "too few arguments");
3991 if(num_args
> max_args
)
3993 oberon_error(ctx
, "too mach arguments");
3996 int num_sizes
= max_args
- 1;
3997 oberon_expr_t
* size_list
= list_args
-> next
;
3999 oberon_expr_t
* arg
= size_list
;
4000 for(int i
= 0; i
< max_args
- 1; i
++)
4002 oberon_check_src(ctx
, arg
);
4003 if(arg
-> result
-> class != OBERON_TYPE_INTEGER
)
4005 oberon_error(ctx
, "size must be integer");
4010 src
-> item
.num_args
= num_sizes
;
4011 src
-> item
.args
= size_list
;
4013 else if(type
-> class != OBERON_TYPE_RECORD
)
4015 oberon_error(ctx
, "oberon_make_new_call: wat");
4018 if(num_args
> max_args
)
4020 oberon_error(ctx
, "too mach arguments");
4023 oberon_assign(ctx
, src
, dst
);
4027 oberon_make_copy_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4031 oberon_error(ctx
, "too few arguments");
4036 oberon_error(ctx
, "too mach arguments");
4039 oberon_expr_t
* src
;
4041 oberon_check_src(ctx
, src
);
4043 oberon_expr_t
* dst
;
4044 dst
= list_args
-> next
;
4045 oberon_check_dst(ctx
, dst
);
4047 if(!oberon_is_string_type(src
-> result
) && !oberon_is_array_of_char_type(src
-> result
))
4049 oberon_error(ctx
, "source must be string or array of char");
4052 if(!oberon_is_array_of_char_type(dst
-> result
))
4054 oberon_error(ctx
, "dst must be array of char");
4057 oberon_generate_copy(ctx
, src
, dst
);
4061 oberon_make_assert_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4065 oberon_error(ctx
, "too few arguments");
4070 oberon_error(ctx
, "too mach arguments");
4073 oberon_expr_t
* cond
;
4075 oberon_check_src(ctx
, cond
);
4077 if(!oberon_is_boolean_type(cond
-> result
))
4079 oberon_error(ctx
, "expected boolean");
4084 oberon_generate_assert(ctx
, cond
);
4088 oberon_expr_t
* num
;
4089 num
= list_args
-> next
;
4090 oberon_check_src(ctx
, num
);
4092 if(!oberon_is_integer_type(num
-> result
))
4094 oberon_error(ctx
, "expected integer");
4097 oberon_check_const(ctx
, num
);
4099 oberon_generate_assert_n(ctx
, cond
, num
-> item
.integer
);
4104 oberon_make_halt_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4108 oberon_error(ctx
, "too few arguments");
4113 oberon_error(ctx
, "too mach arguments");
4116 oberon_expr_t
* num
;
4118 oberon_check_src(ctx
, num
);
4120 if(num
-> result
-> class != OBERON_TYPE_INTEGER
)
4122 oberon_error(ctx
, "expected integer");
4125 oberon_check_const(ctx
, num
);
4127 oberon_generate_halt(ctx
, num
-> item
.integer
);
4130 static oberon_expr_t
*
4131 oberon_make_ash_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4135 oberon_error(ctx
, "too few arguments");
4140 oberon_error(ctx
, "too mach arguments");
4143 oberon_expr_t
* arg1
;
4145 oberon_check_src(ctx
, arg1
);
4146 if(arg1
-> result
-> class != OBERON_TYPE_INTEGER
)
4148 oberon_error(ctx
, "expected integer");
4151 oberon_expr_t
* arg2
;
4152 arg2
= list_args
-> next
;
4153 oberon_check_src(ctx
, arg2
);
4154 if(arg2
-> result
-> class != OBERON_TYPE_INTEGER
)
4156 oberon_error(ctx
, "expected integer");
4159 oberon_expr_t
* expr
;
4160 if(oberon_is_const(arg1
) && oberon_is_const(arg2
))
4162 int64_t x
= arg1
-> item
.integer
;
4163 int64_t y
= arg2
-> item
.integer
;
4164 int64_t v
= (y
> 0) ? (x
<< y
) : (x
>> labs(y
));
4165 expr
= oberon_make_integer(ctx
, v
);
4169 expr
= oberon_new_operator(OP_ASH
, arg1
-> result
, arg1
, arg2
);
4175 static oberon_expr_t
*
4176 oberon_make_lsh_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4180 oberon_error(ctx
, "too few arguments");
4185 oberon_error(ctx
, "too mach arguments");
4188 oberon_expr_t
* arg1
;
4190 oberon_check_src(ctx
, arg1
);
4192 oberon_type_t
* t
= arg1
-> result
;
4193 if(!oberon_is_integer_type(t
)
4194 && !oberon_is_char_type(t
)
4195 && !oberon_is_system_byte_type(t
))
4197 oberon_error(ctx
, "expected integer, char, or SYSTEM.BYTE");
4200 oberon_expr_t
* arg2
;
4201 arg2
= list_args
-> next
;
4202 oberon_check_src(ctx
, arg2
);
4203 if(arg2
-> result
-> class != OBERON_TYPE_INTEGER
)
4205 oberon_error(ctx
, "expected integer");
4208 oberon_expr_t
* expr
;
4209 if(oberon_is_const(arg1
) && oberon_is_const(arg2
))
4211 uint64_t x
= arg1
-> item
.integer
;
4212 int64_t y
= arg2
-> item
.integer
;
4213 uint64_t v
= (y
> 0) ? (x
<< y
) : (x
>> labs(y
));
4215 if(oberon_is_integer_type(t
))
4217 expr
= oberon_make_integer(ctx
, v
);
4219 else if(oberon_is_char_type(t
))
4221 expr
= oberon_make_char(ctx
, v
);
4225 expr
= oberon_make_system_byte(ctx
, v
);
4230 expr
= oberon_new_operator(OP_LSH
, arg1
-> result
, arg1
, arg2
);
4231 expr
= oberon_cast_expr(ctx
, expr
, t
);
4237 static oberon_expr_t
*
4238 oberon_make_rot_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4242 oberon_error(ctx
, "too few arguments");
4247 oberon_error(ctx
, "too mach arguments");
4250 oberon_expr_t
* arg1
;
4252 oberon_check_src(ctx
, arg1
);
4254 oberon_type_t
* t
= arg1
-> result
;
4255 if(!oberon_is_integer_type(t
)
4256 && !oberon_is_char_type(t
)
4257 && !oberon_is_system_byte_type(t
))
4259 oberon_error(ctx
, "expected integer, char, or SYSTEM.BYTE");
4262 oberon_expr_t
* arg2
;
4263 arg2
= list_args
-> next
;
4264 oberon_check_src(ctx
, arg2
);
4265 if(arg2
-> result
-> class != OBERON_TYPE_INTEGER
)
4267 oberon_error(ctx
, "expected integer");
4270 oberon_expr_t
* expr
;
4271 if(oberon_is_const(arg1
) && oberon_is_const(arg2
))
4273 uint64_t x
= arg1
-> item
.integer
;
4274 int64_t y
= arg2
-> item
.integer
;
4279 v
= (x
<< y
) | (x
>> (64 - y
));
4284 v
= (x
>> y
) | (x
<< (64 - y
));
4287 if(oberon_is_integer_type(t
))
4289 expr
= oberon_make_integer(ctx
, v
);
4291 else if(oberon_is_char_type(t
))
4293 expr
= oberon_make_char(ctx
, v
);
4297 expr
= oberon_make_system_byte(ctx
, v
);
4302 expr
= oberon_new_operator(OP_ROT
, arg1
-> result
, arg1
, arg2
);
4303 expr
= oberon_cast_expr(ctx
, expr
, t
);
4309 static oberon_expr_t
*
4310 oberon_make_cap_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4314 oberon_error(ctx
, "too few arguments");
4319 oberon_error(ctx
, "too mach arguments");
4322 oberon_expr_t
* arg
;
4324 oberon_check_src(ctx
, arg
);
4326 if(!oberon_is_char_type(arg
-> result
))
4328 oberon_error(ctx
, "expected char");
4331 oberon_expr_t
* expr
;
4332 if(oberon_is_const(arg
))
4334 expr
= oberon_make_char(ctx
, toupper(arg
-> item
.integer
));
4338 expr
= oberon_new_operator(OP_CAP
, arg
-> result
, arg
, NULL
);
4344 static oberon_expr_t
*
4345 oberon_make_chr_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4349 oberon_error(ctx
, "too few arguments");
4354 oberon_error(ctx
, "too mach arguments");
4357 oberon_expr_t
* arg
;
4359 oberon_check_src(ctx
, arg
);
4361 if(!oberon_is_integer_type(arg
-> result
))
4363 oberon_error(ctx
, "expected integer");
4366 oberon_expr_t
* expr
;
4367 if(oberon_is_const(arg
))
4369 expr
= oberon_make_char(ctx
, arg
-> item
.integer
);
4373 expr
= oberon_cast_expr(ctx
, arg
, ctx
-> char_type
);
4378 static oberon_expr_t
*
4379 oberon_make_ord_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4383 oberon_error(ctx
, "too few arguments");
4388 oberon_error(ctx
, "too mach arguments");
4391 oberon_expr_t
* arg
;
4393 oberon_check_src(ctx
, arg
);
4395 if(!oberon_is_char_type(arg
-> result
))
4397 oberon_error(ctx
, "expected char");
4400 oberon_expr_t
* expr
;
4401 if(oberon_is_const(arg
))
4403 expr
= oberon_make_integer(ctx
, arg
-> item
.integer
);
4407 expr
= oberon_cast_expr(ctx
, arg
, ctx
-> int_type
);
4412 static oberon_expr_t
*
4413 oberon_make_entier_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4417 oberon_error(ctx
, "too few arguments");
4422 oberon_error(ctx
, "too mach arguments");
4425 oberon_expr_t
* arg
;
4427 oberon_check_src(ctx
, arg
);
4429 if(!oberon_is_real_type(arg
-> result
))
4431 oberon_error(ctx
, "expected real");
4434 oberon_expr_t
* expr
;
4435 if(oberon_is_const(arg
))
4437 expr
= oberon_make_integer(ctx
, floor(arg
-> item
.real
));
4441 expr
= oberon_new_operator(OP_ENTIER
, ctx
-> int_type
, arg
, NULL
);
4446 static oberon_expr_t
*
4447 oberon_make_odd_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4451 oberon_error(ctx
, "too few arguments");
4456 oberon_error(ctx
, "too mach arguments");
4459 oberon_expr_t
* arg
;
4461 oberon_check_src(ctx
, arg
);
4463 if(!oberon_is_integer_type(arg
-> result
))
4465 oberon_error(ctx
, "expected integer");
4468 oberon_expr_t
* expr
;
4469 expr
= oberon_make_bin_op(ctx
, MOD
, arg
, oberon_make_integer(ctx
, 2));
4470 expr
= oberon_make_bin_op(ctx
, EQUAL
, expr
, oberon_make_integer(ctx
, 1));
4474 static oberon_expr_t
*
4475 oberon_make_short_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4479 oberon_error(ctx
, "too few arguments");
4484 oberon_error(ctx
, "too mach arguments");
4487 oberon_expr_t
* arg
;
4489 oberon_check_src(ctx
, arg
);
4491 if(arg
-> result
-> shorter
== NULL
)
4493 oberon_error(ctx
, "already shorter");
4496 oberon_expr_t
* expr
;
4497 expr
= oberon_cast_expr(ctx
, arg
, arg
-> result
-> shorter
);
4501 static oberon_expr_t
*
4502 oberon_make_long_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4506 oberon_error(ctx
, "too few arguments");
4511 oberon_error(ctx
, "too mach arguments");
4514 oberon_expr_t
* arg
;
4516 oberon_check_src(ctx
, arg
);
4518 if(arg
-> result
-> longer
== NULL
)
4520 oberon_error(ctx
, "already longer");
4523 oberon_expr_t
* expr
;
4524 expr
= oberon_cast_expr(ctx
, arg
, arg
-> result
-> longer
);
4528 static oberon_expr_t
*
4529 oberon_make_len_call(oberon_context_t
* ctx
, int num_args
, oberon_expr_t
* list_args
)
4533 oberon_error(ctx
, "too few arguments");
4538 oberon_error(ctx
, "too mach arguments");
4543 oberon_check_src(ctx
, v
);
4545 if(!oberon_is_array_type(v
-> result
))
4547 oberon_error(ctx
, "expected array");
4553 oberon_expr_t
* num
;
4554 num
= list_args
-> next
;
4555 oberon_check_src(ctx
, num
);
4557 if(!oberon_is_integer_type(num
-> result
))
4559 oberon_error(ctx
, "expected integer");
4561 oberon_check_const(ctx
, num
);
4563 n
= num
-> item
.integer
;
4567 oberon_type_t
* arr
= v
-> result
;
4568 while(arr
-> class == OBERON_TYPE_ARRAY
)
4574 if(n
< 0 || n
> dim
)
4576 oberon_error(ctx
, "not in range 0..%i", dim
- 1);
4579 assert(v
-> is_item
);
4581 oberon_expr_t
* expr
;
4582 expr
= oberon_new_item(MODE_LEN
, ctx
-> int_type
, true);
4583 expr
-> item
.parent
= (oberon_item_t
*) v
;
4584 expr
-> item
.integer
= n
;
4589 oberon_new_const(oberon_context_t
* ctx
, char * name
, oberon_expr_t
* expr
)
4591 oberon_object_t
* constant
;
4592 constant
= oberon_define_object(ctx
-> decl
, name
, OBERON_CLASS_CONST
, true, false, false);
4593 oberon_check_const(ctx
, expr
);
4594 constant
-> value
= (oberon_item_t
*) expr
;
4598 register_default_types(oberon_context_t
* ctx
)
4600 ctx
-> notype_type
= oberon_new_type_ptr(OBERON_TYPE_NOTYPE
);
4601 oberon_generator_init_type(ctx
, ctx
-> notype_type
);
4603 ctx
-> nil_type
= oberon_new_type_ptr(OBERON_TYPE_NIL
);
4604 oberon_generator_init_type(ctx
, ctx
-> nil_type
);
4606 ctx
-> string_type
= oberon_new_type_string(1);
4607 oberon_generator_init_type(ctx
, ctx
-> string_type
);
4609 ctx
-> bool_type
= oberon_new_type_boolean();
4610 oberon_generator_init_type(ctx
, ctx
-> bool_type
);
4612 ctx
-> char_type
= oberon_new_type_char(1);
4613 oberon_generator_init_type(ctx
, ctx
-> char_type
);
4615 ctx
-> byte_type
= oberon_new_type_integer(1);
4616 oberon_generator_init_type(ctx
, ctx
-> byte_type
);
4618 ctx
-> shortint_type
= oberon_new_type_integer(2);
4619 oberon_generator_init_type(ctx
, ctx
-> shortint_type
);
4621 ctx
-> int_type
= oberon_new_type_integer(4);
4622 oberon_generator_init_type(ctx
, ctx
-> int_type
);
4624 ctx
-> longint_type
= oberon_new_type_integer(8);
4625 oberon_generator_init_type(ctx
, ctx
-> longint_type
);
4627 ctx
-> real_type
= oberon_new_type_real(4);
4628 oberon_generator_init_type(ctx
, ctx
-> real_type
);
4630 ctx
-> longreal_type
= oberon_new_type_real(8);
4631 oberon_generator_init_type(ctx
, ctx
-> longreal_type
);
4633 ctx
-> set_type
= oberon_new_type_set(4);
4634 oberon_generator_init_type(ctx
, ctx
-> set_type
);
4636 ctx
-> system_byte_type
= oberon_new_type_ptr(OBERON_TYPE_SYSTEM_BYTE
);
4637 oberon_generator_init_type(ctx
, ctx
-> system_byte_type
);
4639 ctx
-> system_ptr_type
= oberon_new_type_ptr(OBERON_TYPE_SYSTEM_PTR
);
4640 oberon_generator_init_type(ctx
, ctx
-> system_ptr_type
);
4642 /* LONG / SHORT support */
4643 ctx
-> byte_type
-> shorter
= NULL
;
4644 ctx
-> byte_type
-> longer
= ctx
-> shortint_type
;
4646 ctx
-> shortint_type
-> shorter
= ctx
-> byte_type
;
4647 ctx
-> shortint_type
-> longer
= ctx
-> int_type
;
4649 ctx
-> int_type
-> shorter
= ctx
-> shortint_type
;
4650 ctx
-> int_type
-> longer
= ctx
-> longint_type
;
4652 ctx
-> longint_type
-> shorter
= ctx
-> int_type
;
4653 ctx
-> longint_type
-> longer
= NULL
;
4655 ctx
-> real_type
-> shorter
= NULL
;
4656 ctx
-> real_type
-> longer
= ctx
-> longreal_type
;
4658 ctx
-> longreal_type
-> shorter
= ctx
-> real_type
;
4659 ctx
-> longreal_type
-> longer
= NULL
;
4663 oberon_new_intrinsic(oberon_context_t
* ctx
, char * name
, GenerateFuncCallback f
, GenerateProcCallback p
)
4665 oberon_object_t
* proc
;
4666 proc
= oberon_define_object(ctx
-> decl
, name
, OBERON_CLASS_PROC
, true, false, false);
4667 proc
-> type
= oberon_new_type_ptr(OBERON_TYPE_PROCEDURE
);
4668 proc
-> type
-> sysproc
= true;
4669 proc
-> type
-> genfunc
= f
;
4670 proc
-> type
-> genproc
= p
;
4673 static void oberon_new_intrinsic_type(oberon_context_t
* ctx
, char * name
, oberon_type_t
* type
)
4675 oberon_object_t
* id
;
4676 id
= oberon_define_object(ctx
-> decl
, name
, OBERON_CLASS_TYPE
, true, false, false);
4681 oberon_begin_intrinsic_module(oberon_context_t
* ctx
, char * name
, oberon_module_t
** m
)
4683 oberon_scope_t
* module_scope
;
4684 module_scope
= oberon_open_scope(ctx
);
4686 oberon_module_t
* module
;
4687 module
= GC_MALLOC(sizeof *module
);
4688 memset(module
, 0, sizeof *module
);
4689 module
-> name
= name
;
4690 module
-> intrinsic
= true;
4691 module
-> decl
= module_scope
;
4692 module
-> next
= ctx
-> module_list
;
4694 ctx
-> mod
= module
;
4695 ctx
-> module_list
= module
;
4701 oberon_end_intrinsic_module(oberon_context_t
* ctx
, oberon_module_t
* m
)
4703 oberon_close_scope(m
-> decl
);
4709 oberon_create_context(ModuleImportCallback import_module
)
4711 oberon_context_t
* ctx
= GC_MALLOC(sizeof *ctx
);
4712 memset(ctx
, 0, sizeof *ctx
);
4714 oberon_scope_t
* world_scope
;
4715 world_scope
= oberon_open_scope(ctx
);
4716 ctx
-> world_scope
= world_scope
;
4718 ctx
-> import_module
= import_module
;
4720 oberon_generator_init_context(ctx
);
4723 register_default_types(ctx
);
4726 oberon_new_const(ctx
, "TRUE", oberon_make_boolean(ctx
, true));
4727 oberon_new_const(ctx
, "FALSE", oberon_make_boolean(ctx
, false));
4730 oberon_new_intrinsic_type(ctx
, "BOOLEAN", ctx
-> bool_type
);
4731 oberon_new_intrinsic_type(ctx
, "CHAR", ctx
-> char_type
);
4732 oberon_new_intrinsic_type(ctx
, "SHORTINT", ctx
-> byte_type
);
4733 oberon_new_intrinsic_type(ctx
, "INTEGER", ctx
-> shortint_type
);
4734 oberon_new_intrinsic_type(ctx
, "LONGINT", ctx
-> int_type
);
4735 oberon_new_intrinsic_type(ctx
, "HUGEINT", ctx
-> longint_type
);
4736 oberon_new_intrinsic_type(ctx
, "REAL", ctx
-> real_type
);
4737 oberon_new_intrinsic_type(ctx
, "LONGREAL", ctx
-> longreal_type
);
4738 oberon_new_intrinsic_type(ctx
, "SET", ctx
-> set_type
);
4741 oberon_new_intrinsic(ctx
, "ABS", oberon_make_abs_call
, NULL
);
4742 oberon_new_intrinsic(ctx
, "ASH", oberon_make_ash_call
, NULL
);
4743 oberon_new_intrinsic(ctx
, "CAP", oberon_make_cap_call
, NULL
);
4744 oberon_new_intrinsic(ctx
, "CHR", oberon_make_chr_call
, NULL
);
4745 oberon_new_intrinsic(ctx
, "ENTIER", oberon_make_entier_call
, NULL
);
4746 oberon_new_intrinsic(ctx
, "LEN", oberon_make_len_call
, NULL
);
4747 oberon_new_intrinsic(ctx
, "LONG", oberon_make_long_call
, NULL
);
4748 oberon_new_intrinsic(ctx
, "MAX", oberon_make_max_call
, NULL
);
4749 oberon_new_intrinsic(ctx
, "MIN", oberon_make_min_call
, NULL
);
4750 oberon_new_intrinsic(ctx
, "ODD", oberon_make_odd_call
, NULL
);
4751 oberon_new_intrinsic(ctx
, "ORD", oberon_make_ord_call
, NULL
);
4752 oberon_new_intrinsic(ctx
, "SHORT", oberon_make_short_call
, NULL
);
4753 oberon_new_intrinsic(ctx
, "SIZE", oberon_make_size_call
, NULL
);
4756 oberon_new_intrinsic(ctx
, "ASSERT", NULL
, oberon_make_assert_call
);
4757 oberon_new_intrinsic(ctx
, "COPY", NULL
, oberon_make_copy_call
);
4758 oberon_new_intrinsic(ctx
, "DEC", NULL
, oberon_make_dec_call
);
4759 oberon_new_intrinsic(ctx
, "EXCL", NULL
, oberon_make_excl_call
);
4760 oberon_new_intrinsic(ctx
, "HALT", NULL
, oberon_make_halt_call
);
4761 oberon_new_intrinsic(ctx
, "INC", NULL
, oberon_make_inc_call
);
4762 oberon_new_intrinsic(ctx
, "INCL", NULL
, oberon_make_incl_call
);
4763 oberon_new_intrinsic(ctx
, "NEW", NULL
, oberon_make_new_call
);
4766 oberon_begin_intrinsic_module(ctx
, "SYSTEM", &ctx
-> system_module
);
4769 oberon_new_intrinsic_type(ctx
, "BYTE", ctx
-> system_byte_type
);
4770 oberon_new_intrinsic_type(ctx
, "PTR", ctx
-> system_ptr_type
);
4773 oberon_new_intrinsic(ctx
, "LSH", oberon_make_lsh_call
, NULL
);
4774 oberon_new_intrinsic(ctx
, "ROT", oberon_make_rot_call
, NULL
);
4776 oberon_end_intrinsic_module(ctx
, ctx
-> system_module
);
4782 oberon_destroy_context(oberon_context_t
* ctx
)
4784 oberon_generator_destroy_context(ctx
);
4788 oberon_compile_module(oberon_context_t
* ctx
, const char * newcode
)
4790 const char * code
= ctx
-> code
;
4791 int code_index
= ctx
-> code_index
;
4793 int token
= ctx
-> token
;
4794 char * string
= ctx
-> string
;
4795 int integer
= ctx
-> integer
;
4796 int real
= ctx
-> real
;
4797 bool longmode
= ctx
-> longmode
;
4798 oberon_scope_t
* decl
= ctx
-> decl
;
4799 oberon_module_t
* mod
= ctx
-> mod
;
4801 oberon_scope_t
* module_scope
;
4802 module_scope
= oberon_open_scope(ctx
);
4804 oberon_module_t
* module
;
4805 module
= GC_MALLOC(sizeof *module
);
4806 memset(module
, 0, sizeof *module
);
4807 module
-> decl
= module_scope
;
4808 module
-> next
= ctx
-> module_list
;
4810 ctx
-> mod
= module
;
4811 ctx
-> module_list
= module
;
4813 oberon_init_scaner(ctx
, newcode
);
4814 oberon_parse_module(ctx
);
4816 module
-> ready
= 1;
4819 ctx
-> code_index
= code_index
;
4821 ctx
-> token
= token
;
4822 ctx
-> string
= string
;
4823 ctx
-> integer
= integer
;
4825 ctx
-> longmode
= longmode
;