]> git.xonotic.org Git - xonotic/gmqcc.git/blob - gmqcc.h
memvector resize needs to set _count as well
[xonotic/gmqcc.git] / gmqcc.h
1 /*
2  * Copyright (C) 2012
3  *     Dale Weiler, Wolfgang Bumiller
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining a copy of
6  * this software and associated documentation files (the "Software"), to deal in
7  * the Software without restriction, including without limitation the rights to
8  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
9  * of the Software, and to permit persons to whom the Software is furnished to do
10  * so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be included in all
13  * copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21  * SOFTWARE.
22  */
23 #ifndef GMQCC_HDR
24 #define GMQCC_HDR
25 #include <limits.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <stdio.h>
29 #include <stdarg.h>
30 #include <ctype.h>
31
32 /*
33  * Disable some over protective warnings in visual studio because fixing them is a waste
34  * of my time.
35  */
36 #ifdef _MSC_VER
37 #       pragma warning(disable : 4244 ) /* conversion from 'int' to 'float', possible loss of data */
38 #       pragma warning(disable : 4018 ) /* signed/unsigned mismatch                                */
39 #       pragma warning(disable : 4996 ) /* This function or variable may be unsafe                 */
40 #       pragma warning(disable : 4700 ) /* uninitialized local variable used                       */
41 #endif
42
43 #define GMQCC_VERSION_MAJOR 0
44 #define GMQCC_VERSION_MINOR 1
45 #define GMQCC_VERSION_PATCH 0
46 #define GMQCC_VERSION_BUILD(J,N,P) (((J)<<16)|((N)<<8)|(P))
47 #define GMQCC_VERSION \
48     GMQCC_VERSION_BUILD(GMQCC_VERSION_MAJOR, GMQCC_VERSION_MINOR, GMQCC_VERSION_PATCH)
49
50 /*
51  * We cannoy rely on C99 at all, since compilers like MSVC
52  * simply don't support it.  We define our own boolean type
53  * as a result (since we cannot include <stdbool.h>). For
54  * compilers that are in 1999 mode (C99 compliant) we can use
55  * the language keyword _Bool which can allow for better code
56  * on GCC and GCC-like compilers, opposed to `int`.
57  */
58 #ifndef __cplusplus
59 #   ifdef  false
60 #       undef  false
61 #   endif /* !false */
62 #   ifdef  true
63 #       undef true
64 #   endif /* !true  */
65 #   define false (0)
66 #   define true  (1)
67 #   ifdef __STDC_VERSION__
68 #       if __STDC_VERSION__ < 199901L && __GNUC__ < 3
69             typedef int  bool;
70 #       else
71             typedef _Bool bool;
72 #       endif
73 #   else
74         typedef int bool;
75 #   endif /* !__STDC_VERSION__ */
76 #endif    /* !__cplusplus      */
77
78 /*
79  * Of some functions which are generated we want to make sure
80  * that the result isn't ignored. To find such function calls,
81  * we use this macro.
82  */
83 #if defined(__GNUC__) || defined(__CLANG__)
84 #   define GMQCC_WARN __attribute__((warn_unused_result))
85 #else
86 #   define GMQCC_WARN
87 #endif
88 /*
89  * This is a hack to silent clang regarding empty
90  * body if statements.
91  */
92 #define GMQCC_SUPPRESS_EMPTY_BODY do { } while (0)
93
94 /*
95  * Inline is not supported in < C90, however some compilers
96  * like gcc and clang might have an inline attribute we can
97  * use if present.
98  */
99 #ifdef __STDC_VERSION__
100 #    if __STDC_VERSION__ < 199901L
101 #       if defined(__GNUC__) || defined (__CLANG__)
102 #           if __GNUC__ < 2
103 #               define GMQCC_INLINE
104 #           else
105 #               define GMQCC_INLINE __attribute__ ((always_inline))
106 #           endif
107 #       else
108 #           define GMQCC_INLINE
109 #       endif
110 #    else
111 #       define GMQCC_INLINE inline
112 #    endif
113 #else
114 #    define GMQCC_INLINE
115 #endif /* !__STDC_VERSION__ */
116
117 /*
118  * noreturn is present in GCC and clang
119  * it's required for _ast_node_destory otherwise -Wmissing-noreturn
120  * in clang complains about there being no return since abort() is
121  * called.
122  */
123 #if (defined(__GNUC__) && __GNUC__ >= 2) || defined(__CLANG__)
124 #    define GMQCC_NORETURN __attribute__ ((noreturn))
125 #else
126 #    define GMQCC_NORETURN
127 #endif
128
129 /*
130  * stdint.h and inttypes.h -less subset
131  * for systems that don't have it, which we must
132  * assume is all systems. (int8_t not required)
133  */
134 #if   CHAR_MIN  == -128
135     typedef unsigned char  uint8_t; /* same as below */
136 #elif SCHAR_MIN == -128
137     typedef unsigned char  uint8_t; /* same as above */
138 #endif
139 #if   SHRT_MAX  == 0x7FFF
140     typedef short          int16_t;
141     typedef unsigned short uint16_t;
142 #elif INT_MAX   == 0x7FFF
143     typedef int            int16_t;
144     typedef unsigned int   uint16_t;
145 #endif
146 #if   INT_MAX   == 0x7FFFFFFF
147     typedef int            int32_t;
148     typedef unsigned int   uint32_t;
149 #elif LONG_MAX  == 0x7FFFFFFF
150     typedef long           int32_t;
151     typedef unsigned long  uint32_t;
152 #endif
153
154
155 #if defined(__GNUC__) || defined (__CLANG__)
156         typedef int          int64_t  __attribute__((__mode__(__DI__)));
157         typedef unsigned int uint64_t __attribute__((__mode__(__DI__)));
158 #elif defined(_MSC_VER)
159         typedef __int64          int64_t;
160         typedef unsigned __int64 uint64_t;
161 #else
162     /*
163     * Incoorectly size the types so static assertions below will
164     * fail.  There is no valid way to get a 64bit type at this point
165     * without making assumptions of too many things.
166     */
167     typedef struct { char _fail : 0; } int64_t;
168     typedef struct { char _fail : 0; } uint64_t;
169 #endif
170 #ifdef _LP64 /* long pointer == 64 */
171     typedef unsigned long  uintptr_t;
172     typedef long           intptr_t;
173 #else
174     typedef unsigned int   uintptr_t;
175     typedef int            intptr_t;
176 #endif
177 /* Ensure type sizes are correct: */
178 typedef char uint8_size_is_correct  [sizeof(uint8_t)  == 1?1:-1];
179 typedef char uint16_size_is_correct [sizeof(uint16_t) == 2?1:-1];
180 typedef char uint32_size_is_correct [sizeof(uint32_t) == 4?1:-1];
181 typedef char uint64_size_is_correct [sizeof(uint64_t) == 8?1:-1];
182 typedef char int16_size_if_correct  [sizeof(int16_t)  == 2?1:-1];
183 typedef char int32_size_is_correct  [sizeof(int32_t)  == 4?1:-1];
184 typedef char int64_size_is_correct  [sizeof(int64_t)  >= 8?1:-1];
185 /* intptr_t / uintptr_t correct size check */
186 typedef char uintptr_size_is_correct[sizeof(intptr_t) == sizeof(int*)?1:-1];
187 typedef char intptr_size_is_correct [sizeof(uintptr_t)== sizeof(int*)?1:-1];
188
189 /*===================================================================*/
190 /*=========================== util.c ================================*/
191 /*===================================================================*/
192 FILE *util_fopen(const char *filename, const char *mode);
193
194 void *util_memory_a      (unsigned int, unsigned int, const char *);
195 void  util_memory_d      (void       *, unsigned int, const char *);
196 void  util_meminfo       ();
197
198 bool  util_strupper      (const char *);
199 bool  util_strdigit      (const char *);
200 bool  util_strncmpexact  (const char *, const char *, size_t);
201 char *util_strdup        (const char *);
202 char *util_strrq         (const char *);
203 char *util_strrnl        (const char *);
204 char *util_strsws        (const char *);
205 char *util_strchp        (const char *, const char *);
206 void  util_debug         (const char *, const char *, ...);
207 int   util_getline       (char **, size_t *, FILE *);
208 void  util_endianswap    (void *,  int, int);
209
210 size_t util_strtocmd    (const char *, char *, size_t);
211 size_t util_strtononcmd (const char *, char *, size_t);
212
213 uint32_t util_crc32(const char *, int, register const short);
214
215 #ifdef NOTRACK
216 #    define mem_a(x) malloc(x)
217 #    define mem_d(x) free  (x)
218 #else
219 #    define mem_a(x) util_memory_a((x), __LINE__, __FILE__)
220 #    define mem_d(x) util_memory_d((x), __LINE__, __FILE__)
221 #endif
222
223 /*
224  * TODO: make these safer to use.  Currently this only works on
225  * x86 and x86_64, some systems will likely not like this. Such
226  * as BE systems.
227  */
228 #define FLT2INT(Y) *((int32_t*)&(Y))
229 #define INT2FLT(Y) *((float  *)&(Y))
230
231 /* Builds vector type (usefull for inside structures) */
232 #define VECTOR_SNAP(X,Y) X ## Y
233 #define VECTOR_FILL(X,Y) VECTOR_SNAP(X,Y)
234 #define VECTOR_TYPE(T,N)                                        \
235     T*     N##_data      = NULL;                                \
236     long   N##_elements  = 0;                                   \
237     long   N##_allocated = 0
238 /* Builds vector add */
239 #define VECTOR_CORE(T,N)                                        \
240     int    N##_add(T element) {                                 \
241         void *temp = NULL;                                      \
242         if (N##_elements == N##_allocated) {                    \
243             if (N##_allocated == 0) {                           \
244                 N##_allocated = 12;                             \
245             } else {                                            \
246                 N##_allocated *= 2;                             \
247             }                                                   \
248             if  (!(temp = mem_a(N##_allocated * sizeof(T)))) {  \
249                 mem_d(temp);                                    \
250                 return -1;                                      \
251             }                                                   \
252             memcpy(temp, N##_data, (N##_elements * sizeof(T))); \
253             mem_d(N##_data);                                    \
254             N##_data = (T*)temp;                                \
255         }                                                       \
256         N##_data[N##_elements] = element;                       \
257         return   N##_elements++;                                \
258     }                                                           \
259     int N##_put(T* elements, size_t len) {                      \
260         len     --;                                             \
261         elements--;                                             \
262         while (N##_add(*++elements) != -1 && len--);            \
263         return N##_elements;                                    \
264     }                                                           \
265     typedef char VECTOR_FILL(extra_semicolon_##N,__COUNTER__)
266 #define VECTOR_PROT(T,N)                                        \
267     extern T*     N##_data     ;                                \
268     extern long   N##_elements ;                                \
269     extern long   N##_allocated;                                \
270     int           N##_add(T);                                   \
271     int           N##_put(T *, size_t)
272 #define VECTOR_MAKE(T,N) \
273     VECTOR_TYPE(T,N);    \
274     VECTOR_CORE(T,N)
275
276 /*===================================================================*/
277 /*=========================== code.c ================================*/
278 /*===================================================================*/
279
280 /* Note: if you change the order, fix type_sizeof in ir.c */
281 enum {
282     TYPE_VOID     ,
283     TYPE_STRING   ,
284     TYPE_FLOAT    ,
285     TYPE_VECTOR   ,
286     TYPE_ENTITY   ,
287     TYPE_FIELD    ,
288     TYPE_FUNCTION ,
289     TYPE_POINTER  ,
290     TYPE_INTEGER  ,
291     TYPE_VARIANT  ,
292
293     TYPE_COUNT
294 };
295
296 extern const char *type_name[TYPE_COUNT];
297
298 extern size_t type_sizeof[TYPE_COUNT];
299 extern uint16_t type_store_instr[TYPE_COUNT];
300 /* could use type_store_instr + INSTR_STOREP_F - INSTR_STORE_F
301  * but this breaks when TYPE_INTEGER is added, since with the enhanced
302  * instruction set, the old ones are left untouched, thus the _I instructions
303  * are at a seperate place.
304  */
305 extern uint16_t type_storep_instr[TYPE_COUNT];
306 /* other useful lists */
307 extern uint16_t type_eq_instr[TYPE_COUNT];
308 extern uint16_t type_ne_instr[TYPE_COUNT];
309
310 typedef struct {
311     uint32_t offset;      /* Offset in file of where data begins  */
312     uint32_t length;      /* Length of section (how many of)      */
313 } prog_section;
314
315 typedef struct {
316     uint32_t     version;      /* Program version (6)     */
317     uint16_t     crc16;        /* What is this?           */
318     uint16_t     skip;         /* see propsal.txt         */
319
320     prog_section statements;   /* prog_section_statement  */
321     prog_section defs;         /* prog_section_def        */
322     prog_section fields;       /* prog_section_field      */
323     prog_section functions;    /* prog_section_function   */
324     prog_section strings;      /* What is this?           */
325     prog_section globals;      /* What is this?           */
326     uint32_t     entfield;     /* Number of entity fields */
327 } prog_header;
328
329 /*
330  * Each paramater incerements by 3 since vector types hold
331  * 3 components (x,y,z).
332  */
333 #define OFS_NULL      0
334 #define OFS_RETURN    1
335 #define OFS_PARM0     (OFS_RETURN+3)
336 #define OFS_PARM1     (OFS_PARM0 +3)
337 #define OFS_PARM2     (OFS_PARM1 +3)
338 #define OFS_PARM3     (OFS_PARM2 +3)
339 #define OFS_PARM4     (OFS_PARM3 +3)
340 #define OFS_PARM5     (OFS_PARM4 +3)
341 #define OFS_PARM6     (OFS_PARM5 +3)
342 #define OFS_PARM7     (OFS_PARM6 +3)
343
344 typedef struct {
345     uint16_t opcode;
346
347     /* operand 1 */
348     union {
349         int16_t  s1; /* signed   */
350         uint16_t u1; /* unsigned */
351     } o1;
352     /* operand 2 */
353     union {
354         int16_t  s1; /* signed   */
355         uint16_t u1; /* unsigned */
356     } o2;
357     /* operand 3 */
358     union {
359         int16_t  s1; /* signed   */
360         uint16_t u1; /* unsigned */
361     } o3;
362
363     /*
364      * This is the same as the structure in darkplaces
365      * {
366      *     unsigned short op;
367      *     short          a,b,c;
368      * }
369      * But this one is more sane to work with, and the
370      * type sizes are guranteed.
371      */
372 } prog_section_statement;
373
374 typedef struct {
375     /* The types:
376      * 0 = ev_void
377      * 1 = ev_string
378      * 2 = ev_float
379      * 3 = ev_vector
380      * 4 = ev_entity
381      * 5 = ev_field
382      * 6 = ev_function
383      * 7 = ev_pointer -- engine only
384      * 8 = ev_bad     -- engine only
385      */
386     uint16_t type;
387     uint16_t offset;
388     uint32_t name;
389 } prog_section_both;
390 typedef prog_section_both prog_section_def;
391 typedef prog_section_both prog_section_field;
392
393 typedef struct {
394     int32_t   entry;      /* in statement table for instructions  */
395     uint32_t  firstlocal; /* First local in local table           */
396     uint32_t  locals;     /* Total ints of params + locals        */
397     uint32_t  profile;    /* Always zero (engine uses this)       */
398     uint32_t  name;       /* name of function in string table     */
399     uint32_t  file;       /* file of the source file              */
400     uint32_t  nargs;      /* number of arguments                  */
401     uint8_t   argsize[8]; /* size of arguments (keep 8 always?)   */
402 } prog_section_function;
403
404 /*
405  * Instructions
406  * These are the external instructions supported by the interperter
407  * this is what things compile to (from the C code).
408  */
409 enum {
410     INSTR_DONE,
411     INSTR_MUL_F,
412     INSTR_MUL_V,
413     INSTR_MUL_FV,
414     INSTR_MUL_VF,
415     INSTR_DIV_F,
416     INSTR_ADD_F,
417     INSTR_ADD_V,
418     INSTR_SUB_F,
419     INSTR_SUB_V,
420     INSTR_EQ_F,
421     INSTR_EQ_V,
422     INSTR_EQ_S,
423     INSTR_EQ_E,
424     INSTR_EQ_FNC,
425     INSTR_NE_F,
426     INSTR_NE_V,
427     INSTR_NE_S,
428     INSTR_NE_E,
429     INSTR_NE_FNC,
430     INSTR_LE,
431     INSTR_GE,
432     INSTR_LT,
433     INSTR_GT,
434     INSTR_LOAD_F,
435     INSTR_LOAD_V,
436     INSTR_LOAD_S,
437     INSTR_LOAD_ENT,
438     INSTR_LOAD_FLD,
439     INSTR_LOAD_FNC,
440     INSTR_ADDRESS,
441     INSTR_STORE_F,
442     INSTR_STORE_V,
443     INSTR_STORE_S,
444     INSTR_STORE_ENT,
445     INSTR_STORE_FLD,
446     INSTR_STORE_FNC,
447     INSTR_STOREP_F,
448     INSTR_STOREP_V,
449     INSTR_STOREP_S,
450     INSTR_STOREP_ENT,
451     INSTR_STOREP_FLD,
452     INSTR_STOREP_FNC,
453     INSTR_RETURN,
454     INSTR_NOT_F,
455     INSTR_NOT_V,
456     INSTR_NOT_S,
457     INSTR_NOT_ENT,
458     INSTR_NOT_FNC,
459     INSTR_IF,
460     INSTR_IFNOT,
461     INSTR_CALL0,
462     INSTR_CALL1,
463     INSTR_CALL2,
464     INSTR_CALL3,
465     INSTR_CALL4,
466     INSTR_CALL5,
467     INSTR_CALL6,
468     INSTR_CALL7,
469     INSTR_CALL8,
470     INSTR_STATE,
471     INSTR_GOTO,
472     INSTR_AND,
473     INSTR_OR,
474     INSTR_BITAND,
475     INSTR_BITOR,
476
477     /*
478      * Virtual instructions used by the assembler
479      * keep at the end but before virtual instructions
480      * for the IR below.
481      */
482     AINSTR_END,
483
484     /*
485      * Virtual instructions used by the IR
486      * Keep at the end!
487      */
488     VINSTR_PHI,
489     VINSTR_JUMP,
490     VINSTR_COND
491 };
492
493 /*
494  * The symbols below are created by the following
495  * expanded macros:
496  *
497  * VECTOR_MAKE(prog_section_statement, code_statements);
498  * VECTOR_MAKE(prog_section_def,       code_defs      );
499  * VECTOR_MAKE(prog_section_field,     code_fields    );
500  * VECTOR_MAKE(prog_section_function,  code_functions );
501  * VECTOR_MAKE(int,                    code_globals   );
502  * VECTOR_MAKE(char,                   code_chars     );
503  */
504 VECTOR_PROT(prog_section_statement, code_statements);
505 VECTOR_PROT(prog_section_statement, code_statements);
506 VECTOR_PROT(prog_section_def,       code_defs      );
507 VECTOR_PROT(prog_section_field,     code_fields    );
508 VECTOR_PROT(prog_section_function,  code_functions );
509 VECTOR_PROT(int,                    code_globals   );
510 VECTOR_PROT(char,                   code_chars     );
511
512 typedef float   qcfloat;
513 typedef int32_t qcint;
514
515 /*
516  * code_write -- writes out the compiled file
517  * code_init  -- prepares the code file
518  */
519 bool     code_write       (const char *filename);
520 void     code_init        ();
521 uint32_t code_genstring   (const char *string);
522 uint32_t code_cachedstring(const char *string);
523 qcint    code_alloc_field (size_t qcsize);
524
525 /*===================================================================*/
526 /*========================= assembler.c =============================*/
527 /*===================================================================*/
528 static const struct {
529     const char  *m; /* menomic     */
530     const size_t o; /* operands    */
531     const size_t l; /* menomic len */
532 } asm_instr[] = {
533     { "DONE"      , 1, 4 },
534     { "MUL_F"     , 3, 5 },
535     { "MUL_V"     , 3, 5 },
536     { "MUL_FV"    , 3, 6 },
537     { "MUL_VF"    , 3, 6 },
538     { "DIV"       , 0, 3 },
539     { "ADD_F"     , 3, 5 },
540     { "ADD_V"     , 3, 5 },
541     { "SUB_F"     , 3, 5 },
542     { "DUB_V"     , 3, 5 },
543     { "EQ_F"      , 0, 4 },
544     { "EQ_V"      , 0, 4 },
545     { "EQ_S"      , 0, 4 },
546     { "EQ_E"      , 0, 4 },
547     { "EQ_FNC"    , 0, 6 },
548     { "NE_F"      , 0, 4 },
549     { "NE_V"      , 0, 4 },
550     { "NE_S"      , 0, 4 },
551     { "NE_E"      , 0, 4 },
552     { "NE_FNC"    , 0, 6 },
553     { "LE"        , 0, 2 },
554     { "GE"        , 0, 2 },
555     { "LT"        , 0, 2 },
556     { "GT"        , 0, 2 },
557     { "FIELD_F"   , 0, 7 },
558     { "FIELD_V"   , 0, 7 },
559     { "FIELD_S"   , 0, 7 },
560     { "FIELD_ENT" , 0, 9 },
561     { "FIELD_FLD" , 0, 9 },
562     { "FIELD_FNC" , 0, 9 },
563     { "ADDRESS"   , 0, 7 },
564     { "STORE_F"   , 0, 7 },
565     { "STORE_V"   , 0, 7 },
566     { "STORE_S"   , 0, 7 },
567     { "STORE_ENT" , 0, 9 },
568     { "STORE_FLD" , 0, 9 },
569     { "STORE_FNC" , 0, 9 },
570     { "STOREP_F"  , 0, 8 },
571     { "STOREP_V"  , 0, 8 },
572     { "STOREP_S"  , 0, 8 },
573     { "STOREP_ENT", 0, 10},
574     { "STOREP_FLD", 0, 10},
575     { "STOREP_FNC", 0, 10},
576     { "RETURN"    , 0, 6 },
577     { "NOT_F"     , 0, 5 },
578     { "NOT_V"     , 0, 5 },
579     { "NOT_S"     , 0, 5 },
580     { "NOT_ENT"   , 0, 7 },
581     { "NOT_FNC"   , 0, 7 },
582     { "IF"        , 0, 2 },
583     { "IFNOT"     , 0, 5 },
584     { "CALL0"     , 1, 5 },
585     { "CALL1"     , 2, 5 },
586     { "CALL2"     , 3, 5 },
587     { "CALL3"     , 4, 5 },
588     { "CALL4"     , 5, 5 },
589     { "CALL5"     , 6, 5 },
590     { "CALL6"     , 7, 5 },
591     { "CALL7"     , 8, 5 },
592     { "CALL8"     , 9, 5 },
593     { "STATE"     , 0, 5 },
594     { "GOTO"      , 0, 4 },
595     { "AND"       , 0, 3 },
596     { "OR"        , 0, 2 },
597     { "BITAND"    , 0, 6 },
598     { "BITOR"     , 0, 5 },
599
600     { "END"       , 0, 3 } /* virtual assembler instruction */
601 };
602
603 void asm_init (const char *, FILE **);
604 void asm_close(FILE *);
605 void asm_parse(FILE *);
606 /*===================================================================*/
607 /*============================= ast.c ===============================*/
608 /*===================================================================*/
609 #define MEM_VECTOR_PROTO(Towner, Tmem, mem)                   \
610     bool GMQCC_WARN Towner##_##mem##_add(Towner*, Tmem);      \
611     bool GMQCC_WARN Towner##_##mem##_remove(Towner*, size_t)
612
613 #define MEM_VECTOR_PROTO_ALL(Towner, Tmem, mem)                    \
614     MEM_VECTOR_PROTO(Towner, Tmem, mem);                           \
615     bool GMQCC_WARN Towner##_##mem##_find(Towner*, Tmem, size_t*); \
616     void Towner##_##mem##_clear(Towner*)
617
618 #define MEM_VECTOR_MAKE(Twhat, name) \
619     Twhat  *name;                    \
620     size_t name##_count;             \
621     size_t name##_alloc
622
623 #define MEM_VEC_FUN_ADD(Tself, Twhat, mem)                           \
624 bool GMQCC_WARN Tself##_##mem##_add(Tself *self, Twhat f)            \
625 {                                                                    \
626     Twhat *reall;                                                    \
627     if (self->mem##_count == self->mem##_alloc) {                    \
628         if (!self->mem##_alloc) {                                    \
629             self->mem##_alloc = 16;                                  \
630         } else {                                                     \
631             self->mem##_alloc *= 2;                                  \
632         }                                                            \
633         reall = (Twhat*)mem_a(sizeof(Twhat) * self->mem##_alloc);    \
634         if (!reall) {                                                \
635             return false;                                            \
636         }                                                            \
637         memcpy(reall, self->mem, sizeof(Twhat) * self->mem##_count); \
638         mem_d(self->mem);                                            \
639         self->mem = reall;                                           \
640     }                                                                \
641     self->mem[self->mem##_count++] = f;                              \
642     return true;                                                     \
643 }
644
645 #define MEM_VEC_FUN_REMOVE(Tself, Twhat, mem)                        \
646 bool GMQCC_WARN Tself##_##mem##_remove(Tself *self, size_t idx)      \
647 {                                                                    \
648     size_t i;                                                        \
649     Twhat *reall;                                                    \
650     if (idx >= self->mem##_count) {                                  \
651         return true; /* huh... */                                    \
652     }                                                                \
653     for (i = idx; i < self->mem##_count-1; ++i) {                    \
654         self->mem[i] = self->mem[i+1];                               \
655     }                                                                \
656     self->mem##_count--;                                             \
657     if (self->mem##_count < self->mem##_count/2) {                   \
658         self->mem##_alloc /= 2;                                      \
659         reall = (Twhat*)mem_a(sizeof(Twhat) * self->mem##_count);    \
660         if (!reall) {                                                \
661             return false;                                            \
662         }                                                            \
663         memcpy(reall, self->mem, sizeof(Twhat) * self->mem##_count); \
664         mem_d(self->mem);                                            \
665         self->mem = reall;                                           \
666     }                                                                \
667     return true;                                                     \
668 }
669
670 #define MEM_VEC_FUN_FIND(Tself, Twhat, mem)                     \
671 bool GMQCC_WARN Tself##_##mem##_find(Tself *self, Twhat obj, size_t *idx) \
672 {                                                               \
673     size_t i;                                                   \
674     for (i = 0; i < self->mem##_count; ++i) {                   \
675         if (self->mem[i] == obj) {                              \
676             if (idx) {                                          \
677                 *idx = i;                                       \
678             }                                                   \
679             return true;                                        \
680         }                                                       \
681     }                                                           \
682     return false;                                               \
683 }
684
685 #define MEM_VEC_FUN_APPEND(Tself, Twhat, mem)                        \
686 bool GMQCC_WARN Tself##_##mem##_append(Tself *s, Twhat *p, size_t c) \
687 {                                                                    \
688     Twhat *reall;                                                    \
689     if (s->mem##_count+c >= s->mem##_alloc) {                        \
690         if (!s->mem##_alloc) {                                       \
691             s->mem##_alloc = c < 16 ? 16 : c;                        \
692         } else {                                                     \
693             s->mem##_alloc *= 2;                                     \
694             if (s->mem##_count+c >= s->mem##_alloc) {                \
695                 s->mem##_alloc = s->mem##_count+c;                   \
696             }                                                        \
697         }                                                            \
698         reall = (Twhat*)mem_a(sizeof(Twhat) * s->mem##_alloc);       \
699         if (!reall) {                                                \
700             return false;                                            \
701         }                                                            \
702         memcpy(reall, s->mem, sizeof(Twhat) * s->mem##_count);       \
703         mem_d(s->mem);                                               \
704         s->mem = reall;                                              \
705     }                                                                \
706     memcpy(&s->mem[s->mem##_count], p, c*sizeof(*p));                \
707     s->mem##_count += c;                                             \
708     return true;                                                     \
709 }
710
711 #define MEM_VEC_FUN_RESIZE(Tself, Twhat, mem)                    \
712 bool GMQCC_WARN Tself##_##mem##_resize(Tself *s, size_t c)       \
713 {                                                                \
714     Twhat *reall;                                                \
715     if (c > s->mem##_alloc) {                                    \
716         reall = (Twhat*)mem_a(sizeof(Twhat) * c);                \
717         if (!reall) { return false; }                            \
718         memcpy(reall, s->mem, sizeof(Twhat) * s->mem##_count);   \
719         s->mem##_alloc = c;                                      \
720         s->mem##_count = c;                                      \
721         mem_d(s->mem);                                           \
722         s->mem = reall;                                          \
723         return true;                                             \
724     }                                                            \
725     s->mem##_count = c;                                          \
726     if (c < (s->mem##_alloc / 2)) {                              \
727         reall = (Twhat*)mem_a(sizeof(Twhat) * c);                \
728         if (!reall) { return false; }                            \
729         memcpy(reall, s->mem, sizeof(Twhat) * c);                \
730         mem_d(s->mem);                                           \
731         s->mem = reall;                                          \
732     }                                                            \
733     return true;                                                 \
734 }
735
736 #define MEM_VEC_FUN_CLEAR(Tself, mem)   \
737 void Tself##_##mem##_clear(Tself *self) \
738 {                                       \
739     if (!self->mem)                     \
740         return;                         \
741     mem_d((void*) self->mem);           \
742     self->mem = NULL;                   \
743     self->mem##_count = 0;              \
744     self->mem##_alloc = 0;              \
745 }
746
747 #define MEM_VECTOR_CLEAR(owner, mem)  \
748     if ((owner)->mem)                 \
749         mem_d((void*)((owner)->mem)); \
750     (owner)->mem = NULL;              \
751     (owner)->mem##_count = 0;         \
752     (owner)->mem##_alloc = 0
753
754 #define MEM_VECTOR_INIT(owner, mem) \
755 {                                   \
756     (owner)->mem = NULL;            \
757     (owner)->mem##_count = 0;       \
758     (owner)->mem##_alloc = 0;       \
759 }
760
761 #define MEM_VECTOR_MOVE(from, mem, to, tm)   \
762 {                                            \
763     (to)->tm = (from)->mem;                  \
764     (to)->tm##_count = (from)->mem##_count;  \
765     (to)->tm##_alloc = (from)->mem##_alloc;  \
766     (from)->mem = NULL;                      \
767     (from)->mem##_count = 0;                 \
768     (from)->mem##_alloc = 0;                 \
769 }
770
771 #define MEM_VEC_FUNCTIONS(Tself, Twhat, mem) \
772 MEM_VEC_FUN_REMOVE(Tself, Twhat, mem)        \
773 MEM_VEC_FUN_ADD(Tself, Twhat, mem)
774
775 #define MEM_VEC_FUNCTIONS_ALL(Tself, Twhat, mem) \
776 MEM_VEC_FUNCTIONS(Tself, Twhat, mem)             \
777 MEM_VEC_FUN_CLEAR(Tself, mem)                    \
778 MEM_VEC_FUN_FIND(Tself, Twhat, mem)
779
780 enum store_types {
781     store_global,
782     store_local,  /* local, assignable for now, should get promoted later */
783     store_param,  /* parameters, they are locals with a fixed position */
784     store_value,  /* unassignable */
785     store_return  /* unassignable, at OFS_RETURN */
786 };
787
788 typedef struct {
789     qcfloat x, y, z;
790 } vector;
791
792 vector  vec3_add  (vector, vector);
793 vector  vec3_sub  (vector, vector);
794 qcfloat vec3_mulvv(vector, vector);
795 vector  vec3_mulvf(vector, float);
796
797 /*
798  * A shallow copy of a lex_file to remember where which ast node
799  * came from.
800  */
801 typedef struct {
802     const char *file;
803     size_t      line;
804 } lex_ctx;
805
806 /*===================================================================*/
807 /*============================= exec.c ==============================*/
808 /*===================================================================*/
809
810 /* darkplaces has (or will have) a 64 bit prog loader
811  * where the 32 bit qc program is autoconverted on load.
812  * Since we may want to support that as well, let's redefine
813  * float and int here.
814  */
815 typedef union {
816     qcint   _int;
817     qcint    string;
818     qcint    function;
819     qcint    edict;
820     qcfloat _float;
821     qcfloat vector[3];
822     qcint   ivector[3];
823 } qcany;
824
825 typedef char qcfloat_size_is_correct [sizeof(qcfloat) == 4 ?1:-1];
826 typedef char qcint_size_is_correct   [sizeof(qcint)   == 4 ?1:-1];
827
828 enum {
829     VMERR_OK,
830     VMERR_TEMPSTRING_ALLOC,
831
832     VMERR_END
833 };
834
835 #define VM_JUMPS_DEFAULT 1000000
836
837 /* execute-flags */
838 #define VMXF_DEFAULT 0x0000     /* default flags - nothing */
839 #define VMXF_TRACE   0x0001     /* trace: print statements before executing */
840 #define VMXF_PROFILE 0x0002     /* profile: increment the profile counters */
841
842 struct qc_program_s;
843
844 typedef int (*prog_builtin)(struct qc_program_s *prog);
845
846 typedef struct {
847     qcint                  stmt;
848     size_t                 localsp;
849     prog_section_function *function;
850 } qc_exec_stack;
851
852 typedef struct qc_program_s {
853     char           *filename;
854
855     MEM_VECTOR_MAKE(prog_section_statement, code);
856     MEM_VECTOR_MAKE(prog_section_def,       defs);
857     MEM_VECTOR_MAKE(prog_section_def,       fields);
858     MEM_VECTOR_MAKE(prog_section_function,  functions);
859     MEM_VECTOR_MAKE(char,                   strings);
860     MEM_VECTOR_MAKE(qcint,                  globals);
861     MEM_VECTOR_MAKE(qcint,                  entitydata);
862     MEM_VECTOR_MAKE(bool,                   entitypool);
863
864     uint16_t crc16;
865
866     size_t tempstring_start;
867     size_t tempstring_at;
868
869     qcint  vmerror;
870
871     MEM_VECTOR_MAKE(size_t, profile);
872
873     MEM_VECTOR_MAKE(prog_builtin, builtins);
874
875     /* size_t ip; */
876     qcint  entities;
877     size_t entityfields;
878     bool   allowworldwrites;
879
880     MEM_VECTOR_MAKE(qcint,         localstack);
881     MEM_VECTOR_MAKE(qc_exec_stack, stack);
882     size_t statement;
883
884     int    argc; /* current arg count for debugging */
885 } qc_program;
886
887 qc_program* prog_load(const char *filename);
888 void        prog_delete(qc_program *prog);
889
890 bool prog_exec(qc_program *prog, prog_section_function *func, size_t flags, long maxjumps);
891
892 char*             prog_getstring (qc_program *prog, qcint str);
893 prog_section_def* prog_entfield  (qc_program *prog, qcint off);
894 prog_section_def* prog_getdef    (qc_program *prog, qcint off);
895 qcany*            prog_getedict  (qc_program *prog, qcint e);
896 qcint             prog_tempstring(qc_program *prog, const char *_str);
897
898 /*===================================================================*/
899 /*===================== error.c message printer =====================*/
900 /*===================================================================*/
901
902 #ifndef WIN32
903 enum {
904     CON_BLACK   = 30,
905     CON_RED,
906     CON_GREEN,
907     CON_BROWN,
908     CON_BLUE,
909     CON_MAGENTA,
910     CON_CYAN ,
911     CON_WHITE
912 };
913 #endif
914 enum {
915     LVL_MSG,
916     LVL_WARNING,
917     LVL_ERROR
918 };
919
920 void vprintmsg (int level, const char *name, size_t line, const char *msgtype, const char *msg, va_list ap);
921 void printmsg  (int level, const char *name, size_t line, const char *msgtype, const char *msg, ...);
922 void cvprintmsg(lex_ctx ctx, int lvl, const char *msgtype, const char *msg, va_list ap);
923 void cprintmsg (lex_ctx ctx, int lvl, const char *msgtype, const char *msg, ...);
924
925 /*===================================================================*/
926 /*===================== parser.c commandline ========================*/
927 /*===================================================================*/
928
929 bool parser_init   ();
930 bool parser_compile(const char *filename);
931 bool parser_finish (const char *output);
932 void parser_cleanup();
933
934 /*===================================================================*/
935 /*======================= main.c commandline ========================*/
936 /*===================================================================*/
937
938 #if 0
939 /* Helpers to allow for a whole lot of flags. Otherwise we'd limit
940  * to 32 or 64 -f options...
941  */
942 typedef struct {
943     size_t  idx; /* index into an array of 32 bit words */
944     uint8_t bit; /* index _into_ the 32 bit word, thus just uint8 */
945 } longbit;
946 #define LONGBIT(bit) { ((bit)/32), ((bit)%32) }
947 #else
948 typedef uint32_t longbit;
949 #define LONGBIT(bit) (bit)
950 #endif
951
952 /* Used to store the list of flags with names */
953 typedef struct {
954     const char *name;
955     longbit    bit;
956 } opts_flag_def;
957
958 /*===================================================================*/
959 /* list of -f flags, like -fdarkplaces-string-table-bug */
960 enum {
961 # define GMQCC_DEFINE_FLAG(X) X,
962 #  include "flags.def"
963 # undef GMQCC_DEFINE_FLAG
964     COUNT_FLAGS
965 };
966 static const opts_flag_def opts_flag_list[] = {
967 # define GMQCC_DEFINE_FLAG(X) { #X, LONGBIT(X) },
968 #  include "flags.def"
969 # undef GMQCC_DEFINE_FLAG
970     { NULL, LONGBIT(0) }
971 };
972
973 enum {
974 # define GMQCC_DEFINE_FLAG(X) WARN_##X,
975 #  include "warns.def"
976 # undef GMQCC_DEFINE_FLAG
977     COUNT_WARNINGS
978 };
979 static const opts_flag_def opts_warn_list[] = {
980 # define GMQCC_DEFINE_FLAG(X) { #X, LONGBIT(WARN_##X) },
981 #  include "warns.def"
982 # undef GMQCC_DEFINE_FLAG
983     { NULL, LONGBIT(0) }
984 };
985
986 /* other options: */
987 enum {
988     COMPILER_QCC,     /* circa  QuakeC */
989     COMPILER_FTEQCC,  /* fteqcc QuakeC */
990     COMPILER_QCCX,    /* qccx   QuakeC */
991     COMPILER_GMQCC    /* this   QuakeC */
992 };
993 extern uint32_t    opts_O;      /* -Ox */
994 extern const char *opts_output; /* -o file */
995 extern int         opts_standard;
996 extern bool        opts_debug;
997 extern bool        opts_memchk;
998 extern bool        opts_dump;
999 extern bool        opts_werror;
1000 extern bool        opts_forcecrc;
1001 extern uint16_t    opts_forced_crc;
1002
1003 /*===================================================================*/
1004 #define OPTS_FLAG(i) (!! (opts_flags[(i)/32] & (1<< ((i)%32))))
1005 extern uint32_t opts_flags[1 + (COUNT_FLAGS / 32)];
1006 #define OPTS_WARN(i) (!! (opts_warn[(i)/32] & (1<< ((i)%32))))
1007 extern uint32_t opts_warn[1 + (COUNT_WARNINGS / 32)];
1008
1009 #endif