/
mojoshader_compiler.c
4407 lines (3842 loc) · 165 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"
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)
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)
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)
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
58
59
int64 i64;
double dbl;
60
const char *string;
61
const MOJOSHADER_astDataType *datatype;
62
} TokenData;
65
// This tracks data types and variables, and notes when they enter/leave scope.
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
73
struct SymbolScope *next;
} SymbolScope;
75
typedef struct SymbolMap
77
78
79
HashTable *hash;
SymbolScope *scope;
} SymbolMap;
82
83
84
85
86
87
88
89
90
91
// 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;
92
ErrorList *warnings;
93
StringCache *strcache;
94
95
const char *sourcefile; // current source file that we're parsing.
unsigned int sourceline; // current line in sourcefile that we're parsing.
96
97
SymbolMap usertypes;
SymbolMap variables;
98
MOJOSHADER_astNode *ast; // Abstract Syntax Tree
99
const char *source_profile;
100
101
102
int is_func_scope; // non-zero if semantic analysis is in function scope.
int var_index; // next variable index for current function.
int global_var_index; // next variable index for global scope.
103
104
int user_func_index; // next function index for user-defined functions.
int intrinsic_func_index; // next function index for intrinsic functions.
106
// Cache intrinsic types for fast lookup and consistent pointer values.
107
MOJOSHADER_astDataType dt_none;
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
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.
133
134
135
} Context;
136
137
138
139
// !!! 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 ...
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
// 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)
{
165
ctx->free(ptr, ctx->malloc_data);
166
167
} // Free
168
169
170
171
172
173
174
175
176
177
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
178
179
180
181
static void failf(Context *ctx, const char *fmt, ...) ISPRINTF(2,3);
static void failf(Context *ctx, const char *fmt, ...)
{
ctx->isfail = 1;
182
if (ctx->out_of_memory)
183
184
185
186
return;
va_list ap;
va_start(ap, fmt);
187
errorlist_add_va(ctx->errors, ctx->sourcefile, ctx->sourceline, fmt, ap);
188
189
190
191
va_end(ap);
} // failf
static inline void fail(Context *ctx, const char *reason)
193
failf(ctx, "%s", reason);
194
} // fail
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
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
213
214
215
216
217
static inline int isfail(const Context *ctx)
{
return ctx->isfail;
} // isfail
219
static void symbolmap_nuke(const void *k, const void *v, void *d) {/*no-op*/}
221
static int create_symbolmap(Context *ctx, SymbolMap *map)
223
// !!! FIXME: should compare string pointer, with string in cache.
224
map->scope = NULL;
225
map->hash = hash_create(ctx, hash_hash_string, hash_keymatch_string,
226
227
symbolmap_nuke, 1, MallocBridge, FreeBridge, ctx);
return (map->hash != NULL);
228
} // create_symbolmap
230
231
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
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
308
static void push_symbol(Context *ctx, SymbolMap *map, const char *sym,
309
310
const MOJOSHADER_astDataType *dt, const int index,
const int check_dupes)
312
313
314
if (ctx->out_of_memory)
return;
315
316
317
// Decide if this symbol is defined, and if it's in the current scope.
SymbolScope *item = NULL;
const void *value = NULL;
318
if ((check_dupes) && (sym != NULL) && (hash_find(map->hash, sym, &value)))
320
321
322
323
324
// 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))
326
if ( ((const void *) item) == value )
328
329
330
331
332
failf(ctx, "Symbol '%s' already defined", sym);
return;
} // if
item = item->next;
} // while
335
336
// Add the symbol to our map and scope stack.
item = (SymbolScope *) Malloc(ctx, sizeof (SymbolScope));
337
338
339
if (item == NULL)
return;
340
if (sym != NULL) // sym can be NULL if we're pushing a new scope.
342
if (hash_insert(map->hash, sym, item) == -1)
343
344
345
{
Free(ctx, item);
return;
347
348
349
} // if
item->symbol = sym; // cached strings, don't copy.
350
item->index = index;
351
item->datatype = dt;
352
353
item->next = map->scope;
map->scope = item;
354
355
} // push_symbol
356
static void push_usertype(Context *ctx, const char *sym, const MOJOSHADER_astDataType *dt)
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
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
379
push_symbol(ctx, &ctx->usertypes, sym, dt, 0, 1);
380
381
} // push_usertype
382
static inline void push_variable(Context *ctx, const char *sym, const MOJOSHADER_astDataType *dt)
384
385
386
387
388
389
390
391
392
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
393
push_symbol(ctx, &ctx->variables, sym, dt, idx, 1);
394
395
} // push_variable
396
397
398
399
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
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
434
435
436
437
438
439
440
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)
442
SymbolScope *item = map->scope;
443
444
445
if (!item)
return;
if (item->symbol)
446
hash_remove(map->hash, item->symbol);
447
448
map->scope = item->next;
Free(ctx, item);
449
} // pop_symbol
451
static void pop_symbol_scope(Context *ctx, SymbolMap *map)
452
453
{
while ((map->scope) && (map->scope->symbol))
454
pop_symbol(ctx, map);
455
456
457
assert(map->scope != NULL);
assert(map->scope->symbol == NULL);
458
459
460
461
462
463
464
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);
465
466
} // push_scope
467
static const MOJOSHADER_astDataType *find_symbol(Context *ctx, SymbolMap *map, const char *sym, int *_index)
469
470
const void *_item = NULL;
hash_find(map->hash, sym, &_item);
471
SymbolScope *item = (SymbolScope *) _item;
472
473
474
if (item && _index)
*_index = item->index;
return item ? item->datatype : NULL;
475
476
} // find_symbol
477
static inline const MOJOSHADER_astDataType *find_usertype(Context *ctx, const char *sym)
479
return find_symbol(ctx, &ctx->usertypes, sym, NULL);
480
481
} // find_usertype
482
static inline const MOJOSHADER_astDataType *find_variable(Context *ctx, const char *sym, int *_index)
484
return find_symbol(ctx, &ctx->variables, sym, _index);
485
486
} // find_variable
487
static void destroy_symbolmap(Context *ctx, SymbolMap *map)
488
489
{
while (map->scope)
490
pop_symbol(ctx, map);
491
492
hash_destroy(map->hash);
} // destroy_symbolmap
495
496
497
498
499
500
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
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
553
554
// !!! FIXME: new_* and delete_* should take an allocator, not a context.
555
556
557
558
559
// 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.
560
#define NEW_AST_NODE(retval, cls, typ) \
561
cls *retval = (cls *) Malloc(ctx, sizeof (cls)); \
562
563
564
565
566
567
568
569
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 { \
570
571
572
if (!cls) return; \
} while (0)
574
575
static void delete_compilation_unit(Context*, MOJOSHADER_astCompilationUnit*);
static void delete_statement(Context *ctx, MOJOSHADER_astStatement *stmt);
577
578
579
580
581
582
583
584
585
static MOJOSHADER_astExpression *new_identifier_expr(Context *ctx,
const char *string)
{
NEW_AST_NODE(retval, MOJOSHADER_astExpressionIdentifier,
MOJOSHADER_AST_OP_IDENTIFIER);
retval->identifier = string; // cached; don't copy string.
return (MOJOSHADER_astExpression *) retval;
} // new_identifier_expr
586
static MOJOSHADER_astExpression *new_callfunc_expr(Context *ctx,
587
const char *identifier,
588
MOJOSHADER_astArguments *args)
590
591
NEW_AST_NODE(retval, MOJOSHADER_astExpressionCallFunction,
MOJOSHADER_AST_OP_CALLFUNC);
592
593
MOJOSHADER_astExpression *expr = new_identifier_expr(ctx, identifier);
retval->identifier = (MOJOSHADER_astExpressionIdentifier *) expr;
594
retval->args = args;
595
return (MOJOSHADER_astExpression *) retval;
596
597
} // new_callfunc_expr
598
static MOJOSHADER_astExpression *new_constructor_expr(Context *ctx,
599
600
const MOJOSHADER_astDataType *dt,
MOJOSHADER_astArguments *args)
602
603
NEW_AST_NODE(retval, MOJOSHADER_astExpressionConstructor,
MOJOSHADER_AST_OP_CONSTRUCTOR);
604
retval->datatype = dt;
605
retval->args = args;
606
return (MOJOSHADER_astExpression *) retval;
607
608
} // new_constructor_expr
609
static MOJOSHADER_astExpression *new_cast_expr(Context *ctx,
610
const MOJOSHADER_astDataType *dt,
611
MOJOSHADER_astExpression *operand)
613
NEW_AST_NODE(retval, MOJOSHADER_astExpressionCast, MOJOSHADER_AST_OP_CAST);
614
retval->datatype = dt;
615
retval->operand = operand;
616
return (MOJOSHADER_astExpression *) retval;
617
618
} // new_cast_expr
619
620
621
static MOJOSHADER_astExpression *new_unary_expr(Context *ctx,
const MOJOSHADER_astNodeType op,
MOJOSHADER_astExpression *operand)
623
NEW_AST_NODE(retval, MOJOSHADER_astExpressionUnary, op);
624
625
assert(operator_is_unary(op));
retval->operand = operand;
626
return (MOJOSHADER_astExpression *) retval;
627
628
} // new_unary_expr
629
630
631
632
static MOJOSHADER_astExpression *new_binary_expr(Context *ctx,
const MOJOSHADER_astNodeType op,
MOJOSHADER_astExpression *left,
MOJOSHADER_astExpression *right)
634
NEW_AST_NODE(retval, MOJOSHADER_astExpressionBinary, op);
635
636
637
assert(operator_is_binary(op));
retval->left = left;
retval->right = right;
638
return (MOJOSHADER_astExpression *) retval;
639
640
} // new_binary_expr
641
642
643
644
645
static MOJOSHADER_astExpression *new_ternary_expr(Context *ctx,
const MOJOSHADER_astNodeType op,
MOJOSHADER_astExpression *left,
MOJOSHADER_astExpression *center,
MOJOSHADER_astExpression *right)
647
NEW_AST_NODE(retval, MOJOSHADER_astExpressionTernary, op);
648
assert(operator_is_ternary(op));
649
650
assert(op == MOJOSHADER_AST_OP_CONDITIONAL);
retval->datatype = &ctx->dt_bool;
651
652
653
retval->left = left;
retval->center = center;
retval->right = right;
654
return (MOJOSHADER_astExpression *) retval;
655
656
} // new_ternary_expr
657
658
659
static MOJOSHADER_astExpression *new_deref_struct_expr(Context *ctx,
MOJOSHADER_astExpression *identifier,
const char *member)
661
662
NEW_AST_NODE(retval, MOJOSHADER_astExpressionDerefStruct,
MOJOSHADER_AST_OP_DEREF_STRUCT);
663
664
retval->identifier = identifier;
retval->member = member; // cached; don't copy string.
665
retval->isswizzle = 0; // may change during semantic analysis.
666
return (MOJOSHADER_astExpression *) retval;
667
668
} // new_deref_struct_expr
669
670
static MOJOSHADER_astExpression *new_literal_int_expr(Context *ctx,
const int value)
672
673
NEW_AST_NODE(retval, MOJOSHADER_astExpressionIntLiteral,
MOJOSHADER_AST_OP_INT_LITERAL);
674
retval->datatype = &ctx->dt_int;
675
retval->value = value;
676
return (MOJOSHADER_astExpression *) retval;
677
678
} // new_literal_int_expr
679
680
static MOJOSHADER_astExpression *new_literal_float_expr(Context *ctx,
const double dbl)
682
683
NEW_AST_NODE(retval, MOJOSHADER_astExpressionFloatLiteral,
MOJOSHADER_AST_OP_FLOAT_LITERAL);
684
retval->datatype = &ctx->dt_float;
685
retval->value = dbl;
686
return (MOJOSHADER_astExpression *) retval;
687
688
} // new_literal_float_expr
689
690
static MOJOSHADER_astExpression *new_literal_string_expr(Context *ctx,
const char *string)
692
693
NEW_AST_NODE(retval, MOJOSHADER_astExpressionStringLiteral,
MOJOSHADER_AST_OP_STRING_LITERAL);
694
retval->datatype = &ctx->dt_string;
695
retval->string = string; // cached; don't copy string.
696
return (MOJOSHADER_astExpression *) retval;
697
698
} // new_literal_string_expr
699
700
static MOJOSHADER_astExpression *new_literal_boolean_expr(Context *ctx,
const int value)
702
703
NEW_AST_NODE(retval, MOJOSHADER_astExpressionBooleanLiteral,
MOJOSHADER_AST_OP_BOOLEAN_LITERAL);
704
retval->datatype = &ctx->dt_bool;
705
retval->value = value;
706
return (MOJOSHADER_astExpression *) retval;
707
} // new_literal_boolean_expr
709
static void delete_arguments(Context *ctx, MOJOSHADER_astArguments *args);
711
static void delete_expr(Context *ctx, MOJOSHADER_astExpression *_expr)
713
714
MOJOSHADER_astNode *expr = (MOJOSHADER_astNode *) _expr;
715
DELETE_AST_NODE(expr);
716
717
718
719
720
721
722
723
724
725
726
727
728
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);
729
else if (operator_is_binary(expr->ast.type))
731
732
delete_expr(ctx, expr->binary.left);
delete_expr(ctx, expr->binary.right);
733
} // else if
735
else if (operator_is_ternary(expr->ast.type))
737
738
739
delete_expr(ctx, expr->ternary.left);
delete_expr(ctx, expr->ternary.center);
delete_expr(ctx, expr->ternary.right);
741
742
else if (expr->ast.type == MOJOSHADER_AST_OP_CALLFUNC)
744
delete_expr(ctx, (MOJOSHADER_astExpression*)expr->callfunc.identifier);
745
delete_arguments(ctx, expr->callfunc.args);
747
748
749
// rest of operators don't have extra data to free.
750
751
752
Free(ctx, expr);
} // delete_expr
753
754
static MOJOSHADER_astArguments *new_argument(Context *ctx,
MOJOSHADER_astExpression *arg)
756
757
NEW_AST_NODE(retval, MOJOSHADER_astArguments, MOJOSHADER_AST_ARGUMENTS);
retval->argument = arg;
758
759
760
761
retval->next = NULL;
return retval;
} // new_argument
762
static void delete_arguments(Context *ctx, MOJOSHADER_astArguments *args)
763
764
765
766
767
768
769
{
DELETE_AST_NODE(args);
delete_arguments(ctx, args->next);
delete_expr(ctx, args->argument);
Free(ctx, args);
} // delete_arguments
770
771
static MOJOSHADER_astFunctionParameters *new_function_param(Context *ctx,
const MOJOSHADER_astInputModifier inputmod,
772
773
const MOJOSHADER_astDataType *dt,
const char *identifier, const char *semantic,
774
775
const MOJOSHADER_astInterpolationModifier interpmod,
MOJOSHADER_astExpression *initializer)
777
778
NEW_AST_NODE(retval, MOJOSHADER_astFunctionParameters,
MOJOSHADER_AST_FUNCTION_PARAMS);
779
retval->datatype = dt;
780
781
782
783
784
785
786
retval->input_modifier = inputmod;
retval->identifier = identifier;
retval->semantic = semantic;
retval->interpolation_modifier = interpmod;
retval->initializer = initializer;
retval->next = NULL;
return retval;
787
} // new_function_param
789
790
static void delete_function_params(Context *ctx,
MOJOSHADER_astFunctionParameters *params)
792
793
794
795
796
DELETE_AST_NODE(params);
delete_function_params(ctx, params->next);
delete_expr(ctx, params->initializer);
Free(ctx, params);
} // delete_function_params
798
static MOJOSHADER_astFunctionSignature *new_function_signature(Context *ctx,
799
const MOJOSHADER_astDataType *dt,
800
801
const char *identifier,
MOJOSHADER_astFunctionParameters *params)
803
804
NEW_AST_NODE(retval, MOJOSHADER_astFunctionSignature,
MOJOSHADER_AST_FUNCTION_SIGNATURE);
805
retval->datatype = dt;
806
retval->identifier = identifier;
807
retval->params = params;
808
retval->storage_class = MOJOSHADER_AST_FNSTORECLS_NONE;
809
810
811
812
retval->semantic = NULL;
return retval;
} // new_function_signature
813
814
static void delete_function_signature(Context *ctx,
MOJOSHADER_astFunctionSignature *sig)
815
816
{
DELETE_AST_NODE(sig);
817
delete_function_params(ctx, sig->params);
818
819
820
Free(ctx, sig);
} // delete_function_signature
821
822
823
static MOJOSHADER_astCompilationUnit *new_function(Context *ctx,
MOJOSHADER_astFunctionSignature *declaration,
MOJOSHADER_astStatement *definition)
825
826
NEW_AST_NODE(retval, MOJOSHADER_astCompilationUnitFunction,
MOJOSHADER_AST_COMPUNIT_FUNCTION);
827
828
829
retval->next = NULL;
retval->declaration = declaration;
retval->definition = definition;
830
return (MOJOSHADER_astCompilationUnit *) retval;
831
832
} // new_function
833
834
static void delete_function(Context *ctx,
MOJOSHADER_astCompilationUnitFunction *unitfn)
835
836
837
838
839
840
841
842
{
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
843
844
845
static MOJOSHADER_astScalarOrArray *new_scalar_or_array(Context *ctx,
const char *ident, const int isvec,
MOJOSHADER_astExpression *dim)
847
848
NEW_AST_NODE(retval, MOJOSHADER_astScalarOrArray,
MOJOSHADER_AST_SCALAR_OR_ARRAY);
849
850
851
852
853
854
retval->identifier = ident;
retval->isarray = isvec;
retval->dimension = dim;
return retval;
} // new_scalar_or_array
855
static void delete_scalar_or_array(Context *ctx,MOJOSHADER_astScalarOrArray *s)
857
858
859
DELETE_AST_NODE(s);
delete_expr(ctx, s->dimension);
Free(ctx, s);
860
861
} // delete_scalar_or_array
862
static MOJOSHADER_astTypedef *new_typedef(Context *ctx, const int isconst,
863
const MOJOSHADER_astDataType *dt,
864
MOJOSHADER_astScalarOrArray *soa)
866
// we correct this datatype to the final version during semantic analysis.
867
NEW_AST_NODE(retval, MOJOSHADER_astTypedef, MOJOSHADER_AST_TYPEDEF);
868
retval->datatype = dt;
869
870
871
872
873
retval->isconst = isconst;
retval->details = soa;
return retval;
} // new_typedef
874
static void delete_typedef(Context *ctx, MOJOSHADER_astTypedef *td)
875
876
877
878
879
880
{
DELETE_AST_NODE(td);
delete_scalar_or_array(ctx, td->details);
Free(ctx, td);
} // delete_typedef
881
882
static MOJOSHADER_astPackOffset *new_pack_offset(Context *ctx,
const char *a, const char *b)
884
NEW_AST_NODE(retval, MOJOSHADER_astPackOffset, MOJOSHADER_AST_PACK_OFFSET);
885
886
887
888
889
retval->ident1 = a;
retval->ident2 = b;
return retval;
} // new_pack_offset
890
static void delete_pack_offset(Context *ctx, MOJOSHADER_astPackOffset *o)
891
892
893
894
895
{
DELETE_AST_NODE(o);
Free(ctx, o);
} // delete_pack_offset
896
897
static MOJOSHADER_astVariableLowLevel *new_variable_lowlevel(Context *ctx,
MOJOSHADER_astPackOffset *po,
898
899
const char *reg)
{
900
901
NEW_AST_NODE(retval, MOJOSHADER_astVariableLowLevel,
MOJOSHADER_AST_VARIABLE_LOWLEVEL);
902
903
904
905
906
retval->packoffset = po;
retval->register_name = reg;
return retval;
} // new_variable_lowlevel
907
908
static void delete_variable_lowlevel(Context *ctx,
MOJOSHADER_astVariableLowLevel *vll)
909
910
911
912
913
914
{
DELETE_AST_NODE(vll);
delete_pack_offset(ctx, vll->packoffset);
Free(ctx, vll);
} // delete_variable_lowlevel
915
static MOJOSHADER_astAnnotations *new_annotation(Context *ctx,
916
const MOJOSHADER_astDataType *dt,
917
MOJOSHADER_astExpression *initializer)
919
NEW_AST_NODE(retval, MOJOSHADER_astAnnotations, MOJOSHADER_AST_ANNOTATION);
920
retval->datatype = dt;
921
922
923
924
925
retval->initializer = initializer;
retval->next = NULL;
return retval;
} // new_annotation
926
static void delete_annotation(Context *ctx, MOJOSHADER_astAnnotations *annos)
928
929
930
931
DELETE_AST_NODE(annos);
delete_annotation(ctx, annos->next);
delete_expr(ctx, annos->initializer);
Free(ctx, annos);
932
933
} // delete_annotation
934
935
936
937
938
939
static MOJOSHADER_astVariableDeclaration *new_variable_declaration(
Context *ctx, MOJOSHADER_astScalarOrArray *soa,
const char *semantic,
MOJOSHADER_astAnnotations *annotations,
MOJOSHADER_astExpression *init,
MOJOSHADER_astVariableLowLevel *vll)
941
942
NEW_AST_NODE(retval, MOJOSHADER_astVariableDeclaration,
MOJOSHADER_AST_VARIABLE_DECLARATION);
943
944
945
946
947
948
949
950
951
952
953
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
954
955
static void delete_variable_declaration(Context *ctx,
MOJOSHADER_astVariableDeclaration *dcl)
956
957
958
959
960
961
962
963
964
965
{
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
966
967
static MOJOSHADER_astCompilationUnit *new_global_variable(Context *ctx,
MOJOSHADER_astVariableDeclaration *decl)
969
970
NEW_AST_NODE(retval, MOJOSHADER_astCompilationUnitVariable,
MOJOSHADER_AST_COMPUNIT_VARIABLE);
971
972
retval->next = NULL;
retval->declaration = decl;
973
return (MOJOSHADER_astCompilationUnit *) retval;
974
975
} // new_global_variable
976
977
static void delete_global_variable(Context *ctx,
MOJOSHADER_astCompilationUnitVariable *var)
978
979
980
981
982
983
984
{
DELETE_AST_NODE(var);
delete_compilation_unit(ctx, var->next);
delete_variable_declaration(ctx, var->declaration);
Free(ctx, var);
} // delete_global_variable
985
986
static MOJOSHADER_astCompilationUnit *new_global_typedef(Context *ctx,
MOJOSHADER_astTypedef *td)
988
989
NEW_AST_NODE(retval, MOJOSHADER_astCompilationUnitTypedef,
MOJOSHADER_AST_COMPUNIT_TYPEDEF);
990
991
retval->next = NULL;
retval->type_info = td;
992
return (MOJOSHADER_astCompilationUnit *) retval;
993
994
} // new_global_typedef
995
996
static void delete_global_typedef(Context *ctx,
MOJOSHADER_astCompilationUnitTypedef *unit)
997
998
999
1000
{
DELETE_AST_NODE(unit);
delete_compilation_unit(ctx, unit->next);
delete_typedef(ctx, unit->type_info);