/
mojoshader_compiler.c
4807 lines (4203 loc) · 179 KB
1
2
3
4
5
6
7
8
9
/**
* MojoShader; generate shader programs from bytecode of compiled
* Direct3D shaders.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
10
11
12
13
// !!! FIXME: this needs to be split into separate source files:
// !!! FIXME: parse, AST, IR, etc. The problem is we need to deal with the
// !!! FIXME: "Context" struct being passed around everywhere.
14
15
#define __MOJOSHADER_INTERNAL__ 1
#include "mojoshader_internal.h"
16
17
18
19
20
#if DEBUG_COMPILER_PARSER
#define LEMON_SUPPORT_TRACING 1
#endif
21
22
// !!! FIXME: I'd like to lose this. It's really inefficient. Just keep a
// !!! FIXME: (tail) on these list structures instead?
23
24
25
26
27
28
29
30
31
32
33
34
35
36
#define REVERSE_LINKED_LIST(typ, head) { \
if ((head) && (head->next)) { \
typ *tmp = NULL; \
typ *tmp1 = NULL; \
while (head != NULL) { \
tmp = head; \
head = head->next; \
tmp->next = tmp1; \
tmp1 = tmp; \
} \
head = tmp; \
} \
}
37
static inline int operator_is_unary(const MOJOSHADER_astNodeType op)
38
{
39
40
return ( (op > MOJOSHADER_AST_OP_START_RANGE_UNARY) &&
(op < MOJOSHADER_AST_OP_END_RANGE_UNARY) );
41
42
} // operator_is_unary
43
static inline int operator_is_binary(const MOJOSHADER_astNodeType op)
44
{
45
46
return ( (op > MOJOSHADER_AST_OP_START_RANGE_BINARY) &&
(op < MOJOSHADER_AST_OP_END_RANGE_BINARY) );
47
48
} // operator_is_binary
49
static inline int operator_is_ternary(const MOJOSHADER_astNodeType op)
50
{
51
52
return ( (op > MOJOSHADER_AST_OP_START_RANGE_TERNARY) &&
(op < MOJOSHADER_AST_OP_END_RANGE_TERNARY) );
53
54
55
} // operator_is_ternary
56
typedef union TokenData
57
{
58
59
int64 i64;
double dbl;
60
const char *string;
61
const MOJOSHADER_astDataType *datatype;
62
} TokenData;
63
64
65
// This tracks data types and variables, and notes when they enter/leave scope.
66
67
typedef struct SymbolScope
68
69
{
const char *symbol;
70
const MOJOSHADER_astDataType *datatype;
71
int index; // unique positive value within a function, negative if global.
72
int referenced; // non-zero if something looked for this symbol (so we know it's used).
73
74
struct SymbolScope *next;
} SymbolScope;
75
76
typedef struct SymbolMap
77
{
78
79
80
HashTable *hash;
SymbolScope *scope;
} SymbolMap;
81
82
83
84
85
86
87
88
89
90
91
92
// Compile state, passed around all over the place.
typedef struct Context
{
int isfail;
int out_of_memory;
MOJOSHADER_malloc malloc;
MOJOSHADER_free free;
void *malloc_data;
ErrorList *errors;
93
ErrorList *warnings;
94
StringCache *strcache;
95
96
const char *sourcefile; // current source file that we're parsing.
unsigned int sourceline; // current line in sourcefile that we're parsing.
97
98
SymbolMap usertypes;
SymbolMap variables;
99
MOJOSHADER_astNode *ast; // Abstract Syntax Tree
100
const char *source_profile;
101
int is_func_scope; // non-zero if semantic analysis is in function scope.
102
103
int loop_count;
int switch_count;
104
105
int var_index; // next variable index for current function.
int global_var_index; // next variable index for global scope.
106
107
int user_func_index; // next function index for user-defined functions.
int intrinsic_func_index; // next function index for intrinsic functions.
108
109
// Cache intrinsic types for fast lookup and consistent pointer values.
110
MOJOSHADER_astDataType dt_none;
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
MOJOSHADER_astDataType dt_bool;
MOJOSHADER_astDataType dt_int;
MOJOSHADER_astDataType dt_uint;
MOJOSHADER_astDataType dt_float;
MOJOSHADER_astDataType dt_float_snorm;
MOJOSHADER_astDataType dt_float_unorm;
MOJOSHADER_astDataType dt_half;
MOJOSHADER_astDataType dt_double;
MOJOSHADER_astDataType dt_string;
MOJOSHADER_astDataType dt_sampler1d;
MOJOSHADER_astDataType dt_sampler2d;
MOJOSHADER_astDataType dt_sampler3d;
MOJOSHADER_astDataType dt_samplercube;
MOJOSHADER_astDataType dt_samplerstate;
MOJOSHADER_astDataType dt_samplercompstate;
MOJOSHADER_astDataType dt_buf_bool;
MOJOSHADER_astDataType dt_buf_int;
MOJOSHADER_astDataType dt_buf_uint;
MOJOSHADER_astDataType dt_buf_half;
MOJOSHADER_astDataType dt_buf_float;
MOJOSHADER_astDataType dt_buf_double;
MOJOSHADER_astDataType dt_buf_float_snorm;
MOJOSHADER_astDataType dt_buf_float_unorm;
Buffer *garbage; // this is sort of hacky.
136
137
138
} Context;
139
140
141
142
// !!! FIXME: cut and paste between every damned source file follows...
// !!! FIXME: We need to make some sort of ContextBase that applies to all
// !!! FIXME: files and move this stuff to mojoshader_common.c ...
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
// Convenience functions for allocators...
static inline void out_of_memory(Context *ctx)
{
ctx->isfail = ctx->out_of_memory = 1;
} // out_of_memory
static inline void *Malloc(Context *ctx, const size_t len)
{
void *retval = ctx->malloc((int) len, ctx->malloc_data);
if (retval == NULL)
out_of_memory(ctx);
return retval;
} // Malloc
static inline char *StrDup(Context *ctx, const char *str)
{
char *retval = (char *) Malloc(ctx, strlen(str) + 1);
if (retval != NULL)
strcpy(retval, str);
return retval;
} // StrDup
static inline void Free(Context *ctx, void *ptr)
{
168
ctx->free(ptr, ctx->malloc_data);
169
170
} // Free
171
172
173
174
175
176
177
178
179
180
static void *MallocBridge(int bytes, void *data)
{
return Malloc((Context *) data, (size_t) bytes);
} // MallocBridge
static void FreeBridge(void *ptr, void *data)
{
Free((Context *) data, ptr);
} // FreeBridge
181
182
183
184
static void failf(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
static void failf(Context *ctx, const char *fmt, ...)
{
ctx->isfail = 1;
185
if (ctx->out_of_memory)
186
187
188
189
return;
va_list ap;
va_start(ap, fmt);
190
errorlist_add_va(ctx->errors, ctx->sourcefile, ctx->sourceline, fmt, ap);
191
192
193
194
va_end(ap);
} // failf
static inline void fail(Context *ctx, const char *reason)
195
{
196
failf(ctx, "%s", reason);
197
} // fail
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
static void warnf(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
static void warnf(Context *ctx, const char *fmt, ...)
{
if (ctx->out_of_memory)
return;
va_list ap;
va_start(ap, fmt);
errorlist_add_va(ctx->warnings, ctx->sourcefile, ctx->sourceline, fmt, ap);
va_end(ap);
} // warnf
static inline void warn(Context *ctx, const char *reason)
{
warnf(ctx, "%s", reason);
} // warn
216
217
218
219
220
static inline int isfail(const Context *ctx)
{
return ctx->isfail;
} // isfail
221
222
static void symbolmap_nuke(const void *k, const void *v, void *d) {/*no-op*/}
223
224
static int create_symbolmap(Context *ctx, SymbolMap *map)
225
{
226
// !!! FIXME: should compare string pointer, with string in cache.
227
map->scope = NULL;
228
map->hash = hash_create(ctx, hash_hash_string, hash_keymatch_string,
229
230
symbolmap_nuke, 1, MallocBridge, FreeBridge, ctx);
return (map->hash != NULL);
231
} // create_symbolmap
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
static int datatypes_match(const MOJOSHADER_astDataType *a,
const MOJOSHADER_astDataType *b)
{
int i;
if (a == b)
return 1;
else if (a->type != b->type)
return 0;
switch (a->type)
{
case MOJOSHADER_AST_DATATYPE_STRUCT:
if (a->structure.member_count != b->structure.member_count)
return 0;
for (i = 0; i < a->structure.member_count; i++)
{
if (!datatypes_match(a->structure.members[i].datatype,
b->structure.members[i].datatype))
return 0;
// stringcache'd, pointer compare is safe.
else if (a->structure.members[i].identifier !=
b->structure.members[i].identifier)
return 0;
} // for
return 1;
case MOJOSHADER_AST_DATATYPE_ARRAY:
if (a->array.elements != b->array.elements)
return 0;
else if (!datatypes_match(a->array.base, b->array.base))
return 0;
return 1;
case MOJOSHADER_AST_DATATYPE_VECTOR:
if (a->vector.elements != b->vector.elements)
return 0;
else if (!datatypes_match(a->vector.base, b->vector.base))
return 0;
return 1;
case MOJOSHADER_AST_DATATYPE_MATRIX:
if (a->matrix.rows != b->matrix.rows)
return 0;
else if (a->matrix.columns != b->matrix.columns)
return 0;
else if (!datatypes_match(a->matrix.base, b->matrix.base))
return 0;
return 1;
case MOJOSHADER_AST_DATATYPE_BUFFER:
return datatypes_match(a->buffer.base, b->buffer.base);
case MOJOSHADER_AST_DATATYPE_FUNCTION:
if (a->function.num_params != b->function.num_params)
return 0;
else if (a->function.intrinsic != b->function.intrinsic)
return 0;
else if (!datatypes_match(a->function.retval, b->function.retval))
return 0;
for (i = 0; i < a->function.num_params; i++)
{
if (!datatypes_match(a->function.params[i], b->function.params[i]))
return 0;
} // for
return 1;
case MOJOSHADER_AST_DATATYPE_USER:
return 0; // pointers must match, this clearly didn't.
default:
assert(0 && "unexpected case");
return 0;
} // switch
return 0;
} // datatypes_match
310
311
static void push_symbol(Context *ctx, SymbolMap *map, const char *sym,
312
313
const MOJOSHADER_astDataType *dt, const int index,
const int check_dupes)
314
{
315
316
317
if (ctx->out_of_memory)
return;
318
319
320
// Decide if this symbol is defined, and if it's in the current scope.
SymbolScope *item = NULL;
const void *value = NULL;
321
if ((check_dupes) && (sym != NULL) && (hash_find(map->hash, sym, &value)))
322
{
323
324
325
326
327
// check the current scope for a dupe.
// !!! FIXME: note current scope's starting index, see if found
// !!! FIXME: item is < index (and thus, a previous scope).
item = map->scope;
while ((item) && (item->symbol))
328
{
329
if ( ((const void *) item) == value )
330
{
331
332
333
334
335
failf(ctx, "Symbol '%s' already defined", sym);
return;
} // if
item = item->next;
} // while
336
} // if
337
338
339
// Add the symbol to our map and scope stack.
item = (SymbolScope *) Malloc(ctx, sizeof (SymbolScope));
340
341
342
if (item == NULL)
return;
343
if (sym != NULL) // sym can be NULL if we're pushing a new scope.
344
{
345
if (hash_insert(map->hash, sym, item) == -1)
346
347
348
{
Free(ctx, item);
return;
349
} // if
350
351
352
} // if
item->symbol = sym; // cached strings, don't copy.
353
item->index = index;
354
item->datatype = dt;
355
item->referenced = 0;
356
357
item->next = map->scope;
map->scope = item;
358
359
} // push_symbol
360
static void push_usertype(Context *ctx, const char *sym, const MOJOSHADER_astDataType *dt)
361
{
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
if (sym != NULL)
{
MOJOSHADER_astDataType *userdt;
userdt = (MOJOSHADER_astDataType *) Malloc(ctx, sizeof (*userdt));
if (userdt != NULL)
{
// !!! FIXME: this is hacky.
if (!buffer_append(ctx->garbage, &userdt, sizeof (userdt)))
{
Free(ctx, userdt);
userdt = NULL;
} // if
userdt->type = MOJOSHADER_AST_DATATYPE_USER;
userdt->user.details = dt;
userdt->user.name = sym;
dt = userdt;
} // if
} // if
383
push_symbol(ctx, &ctx->usertypes, sym, dt, 0, 1);
384
385
} // push_usertype
386
static inline void push_variable(Context *ctx, const char *sym, const MOJOSHADER_astDataType *dt)
387
{
388
389
390
391
392
393
394
395
396
int idx = 0;
if (sym != NULL)
{
if (ctx->is_func_scope)
idx = ++ctx->var_index; // these are positive.
else
idx = --ctx->global_var_index; // these are negative.
} // if
397
push_symbol(ctx, &ctx->variables, sym, dt, idx, 1);
398
399
} // push_variable
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
static void push_function(Context *ctx, const char *sym,
const MOJOSHADER_astDataType *dt,
const int just_declare)
{
// we don't have any reason to support nested functions at the moment,
// so this would be a bug.
assert(!ctx->is_func_scope);
assert(dt->type == MOJOSHADER_AST_DATATYPE_FUNCTION);
int idx = 0;
if ((sym != NULL) && (dt != NULL))
{
if (!dt->function.intrinsic)
idx = ++ctx->user_func_index; // these are positive.
else
idx = --ctx->intrinsic_func_index; // these are negative.
} // if
// Functions are always global, so no need to search scopes.
// Functions overload, though, so we have to continue iterating to
// see if it matches anything.
const void *value = NULL;
void *iter = NULL;
while (hash_iter(ctx->variables.hash, sym, &value, &iter))
{
// there's already something called this.
if (datatypes_match(dt, ((SymbolScope *) value)->datatype))
{
if (!just_declare)
failf(ctx, "Function '%s' already defined.", sym);
return;
} // if
} // while
// push_symbol() doesn't check dupes, because we just did.
push_symbol(ctx, &ctx->variables, sym, dt, idx, 0);
} // push_function
438
439
440
441
442
443
444
static inline void push_scope(Context *ctx)
{
push_usertype(ctx, NULL, NULL);
push_variable(ctx, NULL, NULL);
} // push_scope
static void pop_symbol(Context *ctx, SymbolMap *map)
445
{
446
SymbolScope *item = map->scope;
447
448
449
if (!item)
return;
if (item->symbol)
450
hash_remove(map->hash, item->symbol);
451
452
map->scope = item->next;
Free(ctx, item);
453
} // pop_symbol
454
455
static void pop_symbol_scope(Context *ctx, SymbolMap *map)
456
457
{
while ((map->scope) && (map->scope->symbol))
458
pop_symbol(ctx, map);
459
460
461
assert(map->scope != NULL);
assert(map->scope->symbol == NULL);
462
463
464
465
466
467
468
pop_symbol(ctx, map);
} // pop_symbol_scope
static inline void pop_scope(Context *ctx)
{
pop_symbol_scope(ctx, &ctx->usertypes);
pop_symbol_scope(ctx, &ctx->variables);
469
470
} // push_scope
471
static const MOJOSHADER_astDataType *find_symbol(Context *ctx, SymbolMap *map, const char *sym, int *_index)
472
{
473
474
const void *_item = NULL;
hash_find(map->hash, sym, &_item);
475
SymbolScope *item = (SymbolScope *) _item;
476
477
478
479
480
481
if (item != NULL)
{
item->referenced++;
if (_index != NULL)
*_index = item->index;
} // if
482
return item ? item->datatype : NULL;
483
484
} // find_symbol
485
static inline const MOJOSHADER_astDataType *find_usertype(Context *ctx, const char *sym)
486
{
487
return find_symbol(ctx, &ctx->usertypes, sym, NULL);
488
489
} // find_usertype
490
static inline const MOJOSHADER_astDataType *find_variable(Context *ctx, const char *sym, int *_index)
491
{
492
return find_symbol(ctx, &ctx->variables, sym, _index);
493
494
} // find_variable
495
static void destroy_symbolmap(Context *ctx, SymbolMap *map)
496
497
{
while (map->scope)
498
pop_symbol(ctx, map);
499
500
hash_destroy(map->hash);
} // destroy_symbolmap
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
static const MOJOSHADER_astDataType *new_datatype_vector(Context *ctx,
const MOJOSHADER_astDataType *dt,
const int columns)
{
MOJOSHADER_astDataType *retval;
retval = (MOJOSHADER_astDataType *) Malloc(ctx, sizeof (*retval));
if (retval == NULL)
return NULL;
// !!! FIXME: this is hacky.
// !!! FIXME: I'd like to cache these anyhow and reuse types.
if (!buffer_append(ctx->garbage, &retval, sizeof (retval)))
{
Free(ctx, retval);
return NULL;
} // if
if ((columns < 1) || (columns > 4))
fail(ctx, "Vector must have between 1 and 4 elements");
retval->type = MOJOSHADER_AST_DATATYPE_VECTOR;
retval->vector.base = dt;
retval->vector.elements = columns;
return retval;
} // new_datatype_vector
static const MOJOSHADER_astDataType *new_datatype_matrix(Context *ctx,
const MOJOSHADER_astDataType *dt,
const int rows, const int columns)
{
MOJOSHADER_astDataType *retval;
// !!! FIXME: allocate enough for a matrix, but we need to cleanup things that copy without checking for subsize.
retval = (MOJOSHADER_astDataType *) Malloc(ctx, sizeof (*retval));
if (retval == NULL)
return NULL;
// !!! FIXME: this is hacky.
// !!! FIXME: I'd like to cache these anyhow and reuse types.
if (!buffer_append(ctx->garbage, &retval, sizeof (retval)))
{
Free(ctx, retval);
return NULL;
} // if
if ((rows < 1) || (rows > 4))
fail(ctx, "Matrix must have between 1 and 4 rows");
if ((columns < 1) || (columns > 4))
fail(ctx, "Matrix must have between 1 and 4 columns");
retval->type = MOJOSHADER_AST_DATATYPE_MATRIX;
retval->matrix.base = dt;
retval->matrix.rows = rows;
retval->matrix.columns = columns;
return retval;
} // new_datatype_matrix
// !!! FIXME: move this to mojoshader_ast.c
561
562
// !!! FIXME: new_* and delete_* should take an allocator, not a context.
563
564
565
566
567
// These functions are mostly for construction and cleanup of nodes in the
// parse tree. Mostly this is simple allocation and initialization, so we
// can do as little in the lemon code as possible, and then sort it all out
// afterwards.
568
#define NEW_AST_NODE(retval, cls, typ) \
569
cls *retval = (cls *) Malloc(ctx, sizeof (cls)); \
570
571
572
573
574
575
576
577
do { \
if (retval == NULL) { return NULL; } \
retval->ast.type = typ; \
retval->ast.filename = ctx->sourcefile; \
retval->ast.line = ctx->sourceline; \
} while (0)
#define DELETE_AST_NODE(cls) do { \
578
579
580
if (!cls) return; \
} while (0)
581
582
583
static void delete_compilation_unit(Context*, MOJOSHADER_astCompilationUnit*);
static void delete_statement(Context *ctx, MOJOSHADER_astStatement *stmt);
584
585
586
587
588
589
static MOJOSHADER_astExpression *new_identifier_expr(Context *ctx,
const char *string)
{
NEW_AST_NODE(retval, MOJOSHADER_astExpressionIdentifier,
MOJOSHADER_AST_OP_IDENTIFIER);
590
retval->datatype = NULL;
591
retval->identifier = string; // cached; don't copy string.
592
retval->index = 0;
593
594
595
return (MOJOSHADER_astExpression *) retval;
} // new_identifier_expr
596
static MOJOSHADER_astExpression *new_callfunc_expr(Context *ctx,
597
const char *identifier,
598
MOJOSHADER_astArguments *args)
599
{
600
601
NEW_AST_NODE(retval, MOJOSHADER_astExpressionCallFunction,
MOJOSHADER_AST_OP_CALLFUNC);
602
MOJOSHADER_astExpression *expr = new_identifier_expr(ctx, identifier);
603
retval->datatype = NULL;
604
retval->identifier = (MOJOSHADER_astExpressionIdentifier *) expr;
605
retval->args = args;
606
return (MOJOSHADER_astExpression *) retval;
607
608
} // new_callfunc_expr
609
static MOJOSHADER_astExpression *new_constructor_expr(Context *ctx,
610
611
const MOJOSHADER_astDataType *dt,
MOJOSHADER_astArguments *args)
612
{
613
614
NEW_AST_NODE(retval, MOJOSHADER_astExpressionConstructor,
MOJOSHADER_AST_OP_CONSTRUCTOR);
615
retval->datatype = dt;
616
retval->args = args;
617
return (MOJOSHADER_astExpression *) retval;
618
619
} // new_constructor_expr
620
static MOJOSHADER_astExpression *new_cast_expr(Context *ctx,
621
const MOJOSHADER_astDataType *dt,
622
MOJOSHADER_astExpression *operand)
623
{
624
NEW_AST_NODE(retval, MOJOSHADER_astExpressionCast, MOJOSHADER_AST_OP_CAST);
625
retval->datatype = dt;
626
retval->operand = operand;
627
return (MOJOSHADER_astExpression *) retval;
628
629
} // new_cast_expr
630
631
632
static MOJOSHADER_astExpression *new_unary_expr(Context *ctx,
const MOJOSHADER_astNodeType op,
MOJOSHADER_astExpression *operand)
633
{
634
NEW_AST_NODE(retval, MOJOSHADER_astExpressionUnary, op);
635
assert(operator_is_unary(op));
636
retval->datatype = NULL;
637
retval->operand = operand;
638
return (MOJOSHADER_astExpression *) retval;
639
640
} // new_unary_expr
641
642
643
644
static MOJOSHADER_astExpression *new_binary_expr(Context *ctx,
const MOJOSHADER_astNodeType op,
MOJOSHADER_astExpression *left,
MOJOSHADER_astExpression *right)
645
{
646
NEW_AST_NODE(retval, MOJOSHADER_astExpressionBinary, op);
647
assert(operator_is_binary(op));
648
retval->datatype = NULL;
649
650
retval->left = left;
retval->right = right;
651
return (MOJOSHADER_astExpression *) retval;
652
653
} // new_binary_expr
654
655
656
657
658
static MOJOSHADER_astExpression *new_ternary_expr(Context *ctx,
const MOJOSHADER_astNodeType op,
MOJOSHADER_astExpression *left,
MOJOSHADER_astExpression *center,
MOJOSHADER_astExpression *right)
659
{
660
NEW_AST_NODE(retval, MOJOSHADER_astExpressionTernary, op);
661
assert(operator_is_ternary(op));
662
663
assert(op == MOJOSHADER_AST_OP_CONDITIONAL);
retval->datatype = &ctx->dt_bool;
664
665
666
retval->left = left;
retval->center = center;
retval->right = right;
667
return (MOJOSHADER_astExpression *) retval;
668
669
} // new_ternary_expr
670
671
672
static MOJOSHADER_astExpression *new_deref_struct_expr(Context *ctx,
MOJOSHADER_astExpression *identifier,
const char *member)
673
{
674
675
NEW_AST_NODE(retval, MOJOSHADER_astExpressionDerefStruct,
MOJOSHADER_AST_OP_DEREF_STRUCT);
676
retval->datatype = NULL;
677
678
retval->identifier = identifier;
retval->member = member; // cached; don't copy string.
679
retval->isswizzle = 0; // may change during semantic analysis.
680
retval->member_index = 0; // set during semantic analysis.
681
return (MOJOSHADER_astExpression *) retval;
682
683
} // new_deref_struct_expr
684
685
static MOJOSHADER_astExpression *new_literal_int_expr(Context *ctx,
const int value)
686
{
687
688
NEW_AST_NODE(retval, MOJOSHADER_astExpressionIntLiteral,
MOJOSHADER_AST_OP_INT_LITERAL);
689
retval->datatype = &ctx->dt_int;
690
retval->value = value;
691
return (MOJOSHADER_astExpression *) retval;
692
693
} // new_literal_int_expr
694
695
static MOJOSHADER_astExpression *new_literal_float_expr(Context *ctx,
const double dbl)
696
{
697
698
NEW_AST_NODE(retval, MOJOSHADER_astExpressionFloatLiteral,
MOJOSHADER_AST_OP_FLOAT_LITERAL);
699
retval->datatype = &ctx->dt_float;
700
retval->value = dbl;
701
return (MOJOSHADER_astExpression *) retval;
702
703
} // new_literal_float_expr
704
705
static MOJOSHADER_astExpression *new_literal_string_expr(Context *ctx,
const char *string)
706
{
707
708
NEW_AST_NODE(retval, MOJOSHADER_astExpressionStringLiteral,
MOJOSHADER_AST_OP_STRING_LITERAL);
709
retval->datatype = &ctx->dt_string;
710
retval->string = string; // cached; don't copy string.
711
return (MOJOSHADER_astExpression *) retval;
712
713
} // new_literal_string_expr
714
715
static MOJOSHADER_astExpression *new_literal_boolean_expr(Context *ctx,
const int value)
716
{
717
718
NEW_AST_NODE(retval, MOJOSHADER_astExpressionBooleanLiteral,
MOJOSHADER_AST_OP_BOOLEAN_LITERAL);
719
retval->datatype = &ctx->dt_bool;
720
retval->value = value;
721
return (MOJOSHADER_astExpression *) retval;
722
} // new_literal_boolean_expr
723
724
static void delete_arguments(Context *ctx, MOJOSHADER_astArguments *args);
725
726
static void delete_expr(Context *ctx, MOJOSHADER_astExpression *_expr)
727
{
728
729
MOJOSHADER_astNode *expr = (MOJOSHADER_astNode *) _expr;
730
DELETE_AST_NODE(expr);
731
732
733
734
735
736
737
738
739
740
741
742
743
if (expr->ast.type == MOJOSHADER_AST_OP_CAST)
delete_expr(ctx, expr->cast.operand);
else if (expr->ast.type == MOJOSHADER_AST_OP_CONSTRUCTOR)
delete_arguments(ctx, expr->constructor.args);
else if (expr->ast.type == MOJOSHADER_AST_OP_DEREF_STRUCT)
delete_expr(ctx, expr->derefstruct.identifier);
else if (operator_is_unary(expr->ast.type))
delete_expr(ctx, expr->unary.operand);
744
else if (operator_is_binary(expr->ast.type))
745
{
746
747
delete_expr(ctx, expr->binary.left);
delete_expr(ctx, expr->binary.right);
748
} // else if
749
750
else if (operator_is_ternary(expr->ast.type))
751
{
752
753
754
delete_expr(ctx, expr->ternary.left);
delete_expr(ctx, expr->ternary.center);
delete_expr(ctx, expr->ternary.right);
755
} // else if
756
757
else if (expr->ast.type == MOJOSHADER_AST_OP_CALLFUNC)
758
{
759
delete_expr(ctx, (MOJOSHADER_astExpression*)expr->callfunc.identifier);
760
delete_arguments(ctx, expr->callfunc.args);
761
} // else if
762
763
764
// rest of operators don't have extra data to free.
765
766
767
Free(ctx, expr);
} // delete_expr
768
769
static MOJOSHADER_astArguments *new_argument(Context *ctx,
MOJOSHADER_astExpression *arg)
770
{
771
772
NEW_AST_NODE(retval, MOJOSHADER_astArguments, MOJOSHADER_AST_ARGUMENTS);
retval->argument = arg;
773
774
775
776
retval->next = NULL;
return retval;
} // new_argument
777
static void delete_arguments(Context *ctx, MOJOSHADER_astArguments *args)
778
779
780
781
782
783
784
{
DELETE_AST_NODE(args);
delete_arguments(ctx, args->next);
delete_expr(ctx, args->argument);
Free(ctx, args);
} // delete_arguments
785
786
static MOJOSHADER_astFunctionParameters *new_function_param(Context *ctx,
const MOJOSHADER_astInputModifier inputmod,
787
788
const MOJOSHADER_astDataType *dt,
const char *identifier, const char *semantic,
789
790
const MOJOSHADER_astInterpolationModifier interpmod,
MOJOSHADER_astExpression *initializer)
791
{
792
793
NEW_AST_NODE(retval, MOJOSHADER_astFunctionParameters,
MOJOSHADER_AST_FUNCTION_PARAMS);
794
retval->datatype = dt;
795
796
797
798
799
800
801
retval->input_modifier = inputmod;
retval->identifier = identifier;
retval->semantic = semantic;
retval->interpolation_modifier = interpmod;
retval->initializer = initializer;
retval->next = NULL;
return retval;
802
} // new_function_param
803
804
805
static void delete_function_params(Context *ctx,
MOJOSHADER_astFunctionParameters *params)
806
{
807
808
809
810
811
DELETE_AST_NODE(params);
delete_function_params(ctx, params->next);
delete_expr(ctx, params->initializer);
Free(ctx, params);
} // delete_function_params
812
813
static MOJOSHADER_astFunctionSignature *new_function_signature(Context *ctx,
814
const MOJOSHADER_astDataType *dt,
815
816
const char *identifier,
MOJOSHADER_astFunctionParameters *params)
817
{
818
819
NEW_AST_NODE(retval, MOJOSHADER_astFunctionSignature,
MOJOSHADER_AST_FUNCTION_SIGNATURE);
820
retval->datatype = dt;
821
retval->identifier = identifier;
822
retval->params = params;
823
retval->storage_class = MOJOSHADER_AST_FNSTORECLS_NONE;
824
825
826
827
retval->semantic = NULL;
return retval;
} // new_function_signature
828
829
static void delete_function_signature(Context *ctx,
MOJOSHADER_astFunctionSignature *sig)
830
831
{
DELETE_AST_NODE(sig);
832
delete_function_params(ctx, sig->params);
833
834
835
Free(ctx, sig);
} // delete_function_signature
836
837
838
static MOJOSHADER_astCompilationUnit *new_function(Context *ctx,
MOJOSHADER_astFunctionSignature *declaration,
MOJOSHADER_astStatement *definition)
839
{
840
841
NEW_AST_NODE(retval, MOJOSHADER_astCompilationUnitFunction,
MOJOSHADER_AST_COMPUNIT_FUNCTION);
842
843
844
retval->next = NULL;
retval->declaration = declaration;
retval->definition = definition;
845
return (MOJOSHADER_astCompilationUnit *) retval;
846
847
} // new_function
848
849
static void delete_function(Context *ctx,
MOJOSHADER_astCompilationUnitFunction *unitfn)
850
851
852
853
854
855
856
857
{
DELETE_AST_NODE(unitfn);
delete_compilation_unit(ctx, unitfn->next);
delete_function_signature(ctx, unitfn->declaration);
delete_statement(ctx, unitfn->definition);
Free(ctx, unitfn);
} // delete_function
858
859
860
static MOJOSHADER_astScalarOrArray *new_scalar_or_array(Context *ctx,
const char *ident, const int isvec,
MOJOSHADER_astExpression *dim)
861
{
862
863
NEW_AST_NODE(retval, MOJOSHADER_astScalarOrArray,
MOJOSHADER_AST_SCALAR_OR_ARRAY);
864
865
866
867
868
869
retval->identifier = ident;
retval->isarray = isvec;
retval->dimension = dim;
return retval;
} // new_scalar_or_array
870
static void delete_scalar_or_array(Context *ctx,MOJOSHADER_astScalarOrArray *s)
871
{
872
873
874
DELETE_AST_NODE(s);
delete_expr(ctx, s->dimension);
Free(ctx, s);
875
876
} // delete_scalar_or_array
877
static MOJOSHADER_astTypedef *new_typedef(Context *ctx, const int isconst,
878
const MOJOSHADER_astDataType *dt,
879
MOJOSHADER_astScalarOrArray *soa)
880
{
881
// we correct this datatype to the final version during semantic analysis.
882
NEW_AST_NODE(retval, MOJOSHADER_astTypedef, MOJOSHADER_AST_TYPEDEF);
883
retval->datatype = dt;
884
885
886
887
888
retval->isconst = isconst;
retval->details = soa;
return retval;
} // new_typedef
889
static void delete_typedef(Context *ctx, MOJOSHADER_astTypedef *td)
890
891
892
893
894
895
{
DELETE_AST_NODE(td);
delete_scalar_or_array(ctx, td->details);
Free(ctx, td);
} // delete_typedef
896
897
static MOJOSHADER_astPackOffset *new_pack_offset(Context *ctx,
const char *a, const char *b)
898
{
899
NEW_AST_NODE(retval, MOJOSHADER_astPackOffset, MOJOSHADER_AST_PACK_OFFSET);
900
901
902
903
904
retval->ident1 = a;
retval->ident2 = b;
return retval;
} // new_pack_offset
905
static void delete_pack_offset(Context *ctx, MOJOSHADER_astPackOffset *o)
906
907
908
909
910
{
DELETE_AST_NODE(o);
Free(ctx, o);
} // delete_pack_offset
911
912
static MOJOSHADER_astVariableLowLevel *new_variable_lowlevel(Context *ctx,
MOJOSHADER_astPackOffset *po,
913
914
const char *reg)
{
915
916
NEW_AST_NODE(retval, MOJOSHADER_astVariableLowLevel,
MOJOSHADER_AST_VARIABLE_LOWLEVEL);
917
918
919
920
921
retval->packoffset = po;
retval->register_name = reg;
return retval;
} // new_variable_lowlevel
922
923
static void delete_variable_lowlevel(Context *ctx,
MOJOSHADER_astVariableLowLevel *vll)
924
925
926
927
928
929
{
DELETE_AST_NODE(vll);
delete_pack_offset(ctx, vll->packoffset);
Free(ctx, vll);
} // delete_variable_lowlevel
930
static MOJOSHADER_astAnnotations *new_annotation(Context *ctx,
931
const MOJOSHADER_astDataType *dt,
932
MOJOSHADER_astExpression *initializer)
933
{
934
NEW_AST_NODE(retval, MOJOSHADER_astAnnotations, MOJOSHADER_AST_ANNOTATION);
935
retval->datatype = dt;
936
937
938
939
940
retval->initializer = initializer;
retval->next = NULL;
return retval;
} // new_annotation
941
static void delete_annotation(Context *ctx, MOJOSHADER_astAnnotations *annos)
942
{
943
944
945
946
DELETE_AST_NODE(annos);
delete_annotation(ctx, annos->next);
delete_expr(ctx, annos->initializer);
Free(ctx, annos);
947
948
} // delete_annotation
949
950
951
952
953
954
static MOJOSHADER_astVariableDeclaration *new_variable_declaration(
Context *ctx, MOJOSHADER_astScalarOrArray *soa,
const char *semantic,
MOJOSHADER_astAnnotations *annotations,
MOJOSHADER_astExpression *init,
MOJOSHADER_astVariableLowLevel *vll)
955
{
956
957
NEW_AST_NODE(retval, MOJOSHADER_astVariableDeclaration,
MOJOSHADER_AST_VARIABLE_DECLARATION);
958
retval->datatype = NULL;
959
960
961
962
963
964
965
966
967
968
969
retval->attributes = 0;
retval->anonymous_datatype = NULL;
retval->details = soa;
retval->semantic = semantic;
retval->annotations = annotations;
retval->initializer = init;
retval->lowlevel = vll;
retval->next = NULL;
return retval;
} // new_variable_declaration
970
971
static void delete_variable_declaration(Context *ctx,
MOJOSHADER_astVariableDeclaration *dcl)
972
973
974
975
976
977
978
979
980
981
{
DELETE_AST_NODE(dcl);
delete_variable_declaration(ctx, dcl->next);
delete_scalar_or_array(ctx, dcl->details);
delete_annotation(ctx, dcl->annotations);
delete_expr(ctx, dcl->initializer);
delete_variable_lowlevel(ctx, dcl->lowlevel);
Free(ctx, dcl);
} // delete_variable_declaration
982
983
static MOJOSHADER_astCompilationUnit *new_global_variable(Context *ctx,
MOJOSHADER_astVariableDeclaration *decl)
984
{
985
986
NEW_AST_NODE(retval, MOJOSHADER_astCompilationUnitVariable,
MOJOSHADER_AST_COMPUNIT_VARIABLE);
987
988
retval->next = NULL;
retval->declaration = decl;
989
return (MOJOSHADER_astCompilationUnit *) retval;
990
991
} // new_global_variable
992
993
static void delete_global_variable(Context *ctx,
MOJOSHADER_astCompilationUnitVariable *var)
994
995
996
997
998
999
1000
{
DELETE_AST_NODE(var);
delete_compilation_unit(ctx, var->next);
delete_variable_declaration(ctx, var->declaration);
Free(ctx, var);
} // delete_global_variable