3
* Copyright © 2009 Intel Corporation
5
* Permission is hereby granted, free of charge, to any person obtaining a
6
* copy of this software and associated documentation files (the "Software"),
7
* to deal in the Software without restriction, including without limitation
8
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
9
* and/or sell copies of the Software, and to permit persons to whom the
10
* Software is furnished to do so, subject to the following conditions:
12
* The above copyright notice and this permission notice (including the next
13
* paragraph) shall be included in all copies or substantial portions of the
16
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22
* DEALINGS IN THE SOFTWARE.
29
#include "glsl_parser_extras.h"
30
#include "compiler/glsl_types.h"
31
#include "util/bitset.h"
33
struct _mesa_glsl_parse_state;
38
* \defgroup AST Abstract syntax tree node definitions
40
* An abstract syntax tree is generated by the parser. This is a fairly
41
* direct representation of the gramma derivation for the source program.
42
* No symantic checking is done during the generation of the AST. Only
43
* syntactic checking is done. Symantic checking is performed by a later
44
* stage that converts the AST to a more generic intermediate representation.
49
* Base class of all abstract syntax tree nodes
53
DECLARE_LINEAR_ZALLOC_CXX_OPERATORS(ast_node);
56
* Print an AST node in something approximating the original GLSL code
58
virtual void print(void) const;
61
* Convert the AST node to the high-level intermediate representation
63
virtual ir_rvalue *hir(exec_list *instructions,
64
struct _mesa_glsl_parse_state *state);
66
virtual bool has_sequence_subexpression() const;
69
* Retrieve the source location of an AST node
71
* This function is primarily used to get the source position of an AST node
72
* into a form that can be passed to \c _mesa_glsl_error.
74
* \sa _mesa_glsl_error, ast_node::set_location
76
struct YYLTYPE get_location(void) const
80
locp.path = this->location.path;
81
locp.source = this->location.source;
82
locp.first_line = this->location.first_line;
83
locp.first_column = this->location.first_column;
84
locp.last_line = this->location.last_line;
85
locp.last_column = this->location.last_column;
91
* Set the source location of an AST node from a parser location
93
* \sa ast_node::get_location
95
void set_location(const struct YYLTYPE &locp)
97
this->location.path = locp.path;
98
this->location.source = locp.source;
99
this->location.first_line = locp.first_line;
100
this->location.first_column = locp.first_column;
101
this->location.last_line = locp.last_line;
102
this->location.last_column = locp.last_column;
106
* Set the source location range of an AST node using two location nodes
108
* \sa ast_node::set_location
110
void set_location_range(const struct YYLTYPE &begin, const struct YYLTYPE &end)
112
this->location.path = begin.path;
113
this->location.source = begin.source;
114
this->location.first_line = begin.first_line;
115
this->location.last_line = end.last_line;
116
this->location.first_column = begin.first_column;
117
this->location.last_column = end.last_column;
121
* Source location of the AST node.
124
char *path; /**< GLSL shader include path. */
125
unsigned source; /**< GLSL source number. */
126
unsigned first_line; /**< First line number within the source string. */
127
unsigned first_column; /**< First column in the first line. */
128
unsigned last_line; /**< Last line number within the source string. */
129
unsigned last_column; /**< Last column in the last line. */
134
virtual void set_is_lhs(bool);
138
* The only constructor is protected so that only derived class objects can
146
* Operators for AST expression nodes.
150
ast_plus, /**< Unary + operator. */
193
ast_unsized_array_dim,
210
* Number of possible operators for an ast_expression
212
* This is done as a define instead of as an additional value in the enum so
213
* that the compiler won't generate spurious messages like "warning:
214
* enumeration value ‘ast_num_operators’ not handled in switch"
216
#define AST_NUM_OPERATORS (ast_aggregate + 1)
220
* Representation of any sort of expression.
222
class ast_expression : public ast_node {
224
ast_expression(int oper, ast_expression *,
225
ast_expression *, ast_expression *);
227
ast_expression(const char *identifier) :
230
subexpressions[0] = NULL;
231
subexpressions[1] = NULL;
232
subexpressions[2] = NULL;
233
primary_expression.identifier = identifier;
234
this->non_lvalue_description = NULL;
235
this->is_lhs = false;
238
static const char *operator_string(enum ast_operators op);
240
virtual ir_rvalue *hir(exec_list *instructions,
241
struct _mesa_glsl_parse_state *state);
243
virtual void hir_no_rvalue(exec_list *instructions,
244
struct _mesa_glsl_parse_state *state);
246
virtual bool has_sequence_subexpression() const;
248
ir_rvalue *do_hir(exec_list *instructions,
249
struct _mesa_glsl_parse_state *state,
252
virtual void print(void) const;
254
enum ast_operators oper;
256
ast_expression *subexpressions[3];
259
const char *identifier;
261
float float_constant;
262
unsigned uint_constant;
264
double double_constant;
265
uint64_t uint64_constant;
266
int64_t int64_constant;
267
} primary_expression;
271
* List of expressions for an \c ast_sequence or parameters for an
272
* \c ast_function_call
274
exec_list expressions;
277
* For things that can't be l-values, this describes what it is.
279
* This text is used by the code that generates IR for assignments to
280
* detect and emit useful messages for assignments to some things that
281
* can't be l-values. For example, pre- or post-incerement expressions.
284
* This pointer may be \c NULL.
286
const char *non_lvalue_description;
288
void set_is_lhs(bool new_value);
294
class ast_expression_bin : public ast_expression {
296
ast_expression_bin(int oper, ast_expression *, ast_expression *);
298
virtual void print(void) const;
302
* Subclass of expressions for function calls
304
class ast_function_expression : public ast_expression {
306
ast_function_expression(ast_expression *callee)
307
: ast_expression(ast_function_call, callee,
314
ast_function_expression(class ast_type_specifier *type)
315
: ast_expression(ast_function_call, (ast_expression *) type,
322
bool is_constructor() const
327
virtual ir_rvalue *hir(exec_list *instructions,
328
struct _mesa_glsl_parse_state *state);
330
virtual void hir_no_rvalue(exec_list *instructions,
331
struct _mesa_glsl_parse_state *state);
333
virtual bool has_sequence_subexpression() const;
337
* Is this function call actually a constructor?
341
handle_method(exec_list *instructions,
342
struct _mesa_glsl_parse_state *state);
345
class ast_subroutine_list : public ast_node
348
virtual void print(void) const;
349
exec_list declarations;
352
class ast_array_specifier : public ast_node {
354
ast_array_specifier(const struct YYLTYPE &locp, ast_expression *dim)
357
array_dimensions.push_tail(&dim->link);
360
void add_dimension(ast_expression *dim)
362
array_dimensions.push_tail(&dim->link);
365
bool is_single_dimension() const
367
return this->array_dimensions.get_tail_raw()->prev != NULL &&
368
this->array_dimensions.get_tail_raw()->prev->is_head_sentinel();
371
virtual void print(void) const;
373
/* This list contains objects of type ast_node containing the
374
* array dimensions in outermost-to-innermost order.
376
exec_list array_dimensions;
379
class ast_layout_expression : public ast_node {
381
ast_layout_expression(const struct YYLTYPE &locp, ast_expression *expr)
384
layout_const_expressions.push_tail(&expr->link);
387
bool process_qualifier_constant(struct _mesa_glsl_parse_state *state,
388
const char *qual_indentifier,
389
unsigned *value, bool can_be_zero);
391
void merge_qualifier(ast_layout_expression *l_expr)
393
layout_const_expressions.append_list(&l_expr->layout_const_expressions);
396
exec_list layout_const_expressions;
400
* C-style aggregate initialization class
402
* Represents C-style initializers of vectors, matrices, arrays, and
403
* structures. E.g., vec3 pos = {1.0, 0.0, -1.0} is equivalent to
404
* vec3 pos = vec3(1.0, 0.0, -1.0).
406
* Specified in GLSL 4.20 and GL_ARB_shading_language_420pack.
408
* \sa _mesa_ast_set_aggregate_type
410
class ast_aggregate_initializer : public ast_expression {
412
ast_aggregate_initializer()
413
: ast_expression(ast_aggregate, NULL, NULL, NULL),
414
constructor_type(NULL)
420
* glsl_type of the aggregate, which is inferred from the LHS of whatever
421
* the aggregate is being used to initialize. This can't be inferred at
422
* parse time (since the parser deals with ast_type_specifiers, not
423
* glsl_types), so the parser leaves it NULL. However, the ast-to-hir
424
* conversion code makes sure to fill it in with the appropriate type
425
* before hir() is called.
427
const glsl_type *constructor_type;
429
virtual ir_rvalue *hir(exec_list *instructions,
430
struct _mesa_glsl_parse_state *state);
432
virtual void hir_no_rvalue(exec_list *instructions,
433
struct _mesa_glsl_parse_state *state);
437
class ast_compound_statement : public ast_node {
439
ast_compound_statement(int new_scope, ast_node *statements);
440
virtual void print(void) const;
442
virtual ir_rvalue *hir(exec_list *instructions,
443
struct _mesa_glsl_parse_state *state);
446
exec_list statements;
449
class ast_declaration : public ast_node {
451
ast_declaration(const char *identifier,
452
ast_array_specifier *array_specifier,
453
ast_expression *initializer);
454
virtual void print(void) const;
456
const char *identifier;
458
ast_array_specifier *array_specifier;
460
ast_expression *initializer;
465
ast_precision_none = 0, /**< Absence of precision qualifier. */
467
ast_precision_medium,
472
ast_depth_none = 0, /**< Absence of depth qualifier. */
479
struct ast_type_qualifier {
480
DECLARE_RALLOC_CXX_OPERATORS(ast_type_qualifier);
481
/* Note: this bitset needs to have at least as many bits as the 'q'
482
* struct has flags, below. Previously, the size was 128 instead of 96.
483
* But an apparent bug in GCC 5.4.0 causes bad SSE code generation
484
* elsewhere, leading to a crash. 96 bits works around the issue.
485
* See https://bugs.freedesktop.org/show_bug.cgi?id=105497
487
DECLARE_BITSET_T(bitset_t, 96);
491
unsigned invariant:1;
494
unsigned attribute:1;
503
unsigned shared_storage:1;
506
unsigned noperspective:1;
508
/** \name Layout qualifiers for GL_ARB_fragment_coord_conventions */
510
unsigned origin_upper_left:1;
511
unsigned pixel_center_integer:1;
515
* Flag set if GL_ARB_enhanced_layouts "align" layout qualifier is
518
unsigned explicit_align:1;
521
* Flag set if GL_ARB_explicit_attrib_location "location" layout
524
unsigned explicit_location:1;
526
* Flag set if GL_ARB_explicit_attrib_location "index" layout
529
unsigned explicit_index:1;
532
* Flag set if GL_ARB_enhanced_layouts "component" layout
535
unsigned explicit_component:1;
538
* Flag set if GL_ARB_shading_language_420pack "binding" layout
541
unsigned explicit_binding:1;
544
* Flag set if GL_ARB_shader_atomic counter "offset" layout
547
unsigned explicit_offset:1;
549
/** \name Layout qualifiers for GL_AMD_conservative_depth */
551
unsigned depth_type:1;
554
/** \name Layout qualifiers for GL_ARB_uniform_buffer_object */
560
unsigned column_major:1;
561
unsigned row_major:1;
564
/** \name Layout qualifiers for GLSL 1.50 geometry shaders */
566
unsigned prim_type:1;
567
unsigned max_vertices:1;
571
* local_size_{x,y,z} flags for compute shaders. Bit 0 represents
572
* local_size_x, and so on.
574
unsigned local_size:3;
576
/** \name Layout qualifiers for ARB_compute_variable_group_size. */
578
unsigned local_size_variable:1;
581
/** \name Layout and memory qualifiers for ARB_shader_image_load_store. */
583
unsigned early_fragment_tests:1;
584
unsigned explicit_image_format:1;
586
unsigned _volatile:1;
587
unsigned restrict_flag:1;
588
unsigned read_only:1; /**< "readonly" qualifier. */
589
unsigned write_only:1; /**< "writeonly" qualifier. */
592
/** \name Layout qualifiers for GL_ARB_gpu_shader5 */
594
unsigned invocations:1;
595
unsigned stream:1; /**< Has stream value assigned */
596
unsigned explicit_stream:1; /**< stream value assigned explicitly by shader code */
599
/** \name Layout qualifiers for GL_ARB_enhanced_layouts */
601
unsigned explicit_xfb_offset:1; /**< xfb_offset value assigned explicitly by shader code */
602
unsigned xfb_buffer:1; /**< Has xfb_buffer value assigned */
603
unsigned explicit_xfb_buffer:1; /**< xfb_buffer value assigned explicitly by shader code */
604
unsigned xfb_stride:1; /**< Is xfb_stride value yet to be merged with global values */
605
unsigned explicit_xfb_stride:1; /**< xfb_stride value assigned explicitly by shader code */
608
/** \name Layout qualifiers for GL_ARB_tessellation_shader */
610
/* tess eval input layout */
611
/* gs prim_type reused for primitive mode */
612
unsigned vertex_spacing:1;
614
unsigned point_mode:1;
615
/* tess control output layout */
619
/** \name Qualifiers for GL_ARB_shader_subroutine */
621
unsigned subroutine:1; /**< Is this marked 'subroutine' */
624
/** \name Qualifiers for GL_KHR_blend_equation_advanced */
626
unsigned blend_support:1; /**< Are there any blend_support_ qualifiers */
630
* Flag set if GL_ARB_post_depth_coverage layout qualifier is used.
632
unsigned post_depth_coverage:1;
635
* Flags for the layout qualifers added by ARB_fragment_shader_interlock
638
unsigned pixel_interlock_ordered:1;
639
unsigned pixel_interlock_unordered:1;
640
unsigned sample_interlock_ordered:1;
641
unsigned sample_interlock_unordered:1;
644
* Flag set if GL_INTEL_conservartive_rasterization layout qualifier
647
unsigned inner_coverage:1;
649
/** \name Layout qualifiers for GL_ARB_bindless_texture */
651
unsigned bindless_sampler:1;
652
unsigned bindless_image:1;
653
unsigned bound_sampler:1;
654
unsigned bound_image:1;
657
/** \name Layout qualifiers for GL_EXT_shader_framebuffer_fetch_non_coherent */
659
unsigned non_coherent:1;
662
/** \name Layout qualifiers for NV_compute_shader_derivatives */
664
unsigned derivative_group:1;
668
* Flag set if GL_NV_viewport_array2 viewport_relative layout
671
unsigned viewport_relative:1;
673
/** \brief Set of flags, accessed by name. */
676
/** \brief Set of flags, accessed as a bitmask. */
680
/** Precision of the type (highp/medium/lowp). */
681
unsigned precision:2;
683
/** Type of layout qualifiers for GL_AMD_conservative_depth. */
684
unsigned depth_type:3;
687
* Alignment specified via GL_ARB_enhanced_layouts "align" layout qualifier
689
ast_expression *align;
691
/** Geometry shader invocations for GL_ARB_gpu_shader5. */
692
ast_layout_expression *invocations;
695
* Location specified via GL_ARB_explicit_attrib_location layout
698
* This field is only valid if \c explicit_location is set.
700
ast_expression *location;
702
* Index specified via GL_ARB_explicit_attrib_location layout
705
* This field is only valid if \c explicit_index is set.
707
ast_expression *index;
710
* Component specified via GL_ARB_enhaced_layouts
713
* This field is only valid if \c explicit_component is set.
715
ast_expression *component;
717
/** Maximum output vertices in GLSL 1.50 geometry shaders. */
718
ast_layout_expression *max_vertices;
720
/** Stream in GLSL 1.50 geometry shaders. */
721
ast_expression *stream;
723
/** xfb_buffer specified via the GL_ARB_enhanced_layouts keyword. */
724
ast_expression *xfb_buffer;
726
/** xfb_stride specified via the GL_ARB_enhanced_layouts keyword. */
727
ast_expression *xfb_stride;
729
/** global xfb_stride values for each buffer */
730
ast_layout_expression *out_xfb_stride[MAX_FEEDBACK_BUFFERS];
733
* Input or output primitive type in GLSL 1.50 geometry shaders
734
* and tessellation shaders.
739
* Binding specified via GL_ARB_shading_language_420pack's "binding" keyword.
742
* This field is only valid if \c explicit_binding is set.
744
ast_expression *binding;
747
* Offset specified via GL_ARB_shader_atomic_counter's or
748
* GL_ARB_enhanced_layouts "offset" keyword, or by GL_ARB_enhanced_layouts
749
* "xfb_offset" keyword.
752
* This field is only valid if \c explicit_offset is set.
754
ast_expression *offset;
757
* Local size specified via GL_ARB_compute_shader's "local_size_{x,y,z}"
758
* layout qualifier. Element i of this array is only valid if
759
* flags.q.local_size & (1 << i) is set.
761
ast_layout_expression *local_size[3];
763
/** Tessellation evaluation shader: vertex spacing (equal, fractional even/odd) */
764
enum gl_tess_spacing vertex_spacing;
766
/** Tessellation evaluation shader: vertex ordering (CW or CCW) */
769
/** Tessellation evaluation shader: point mode */
772
/** Tessellation control shader: number of output vertices */
773
ast_layout_expression *vertices;
776
* Image format specified with an ARB_shader_image_load_store
780
* This field is only valid if \c explicit_image_format is set.
782
enum pipe_format image_format;
785
* Arrangement of invocations used to calculate derivatives in a compute
786
* shader. From NV_compute_shader_derivatives.
788
enum gl_derivative_group derivative_group;
791
* Base type of the data read from or written to this image. Only
792
* the following enumerants are allowed: GLSL_TYPE_UINT,
793
* GLSL_TYPE_INT, GLSL_TYPE_FLOAT.
796
* This field is only valid if \c explicit_image_format is set.
798
glsl_base_type image_base_type;
801
* Return true if and only if an interpolation qualifier is present.
803
bool has_interpolation() const;
806
* Return whether a layout qualifier is present.
808
bool has_layout() const;
811
* Return whether a storage qualifier is present.
813
bool has_storage() const;
816
* Return whether an auxiliary storage qualifier is present.
818
bool has_auxiliary_storage() const;
821
* Return true if and only if a memory qualifier is present.
823
bool has_memory() const;
826
* Return true if the qualifier is a subroutine declaration.
828
bool is_subroutine_decl() const;
830
bool merge_qualifier(YYLTYPE *loc,
831
_mesa_glsl_parse_state *state,
832
const ast_type_qualifier &q,
833
bool is_single_layout_merge,
834
bool is_multiple_layouts_merge = false);
837
* Validate current qualifier against the global out one.
839
bool validate_out_qualifier(YYLTYPE *loc,
840
_mesa_glsl_parse_state *state);
843
* Merge current qualifier into the global out one.
845
bool merge_into_out_qualifier(YYLTYPE *loc,
846
_mesa_glsl_parse_state *state,
850
* Validate current qualifier against the global in one.
852
bool validate_in_qualifier(YYLTYPE *loc,
853
_mesa_glsl_parse_state *state);
856
* Merge current qualifier into the global in one.
858
bool merge_into_in_qualifier(YYLTYPE *loc,
859
_mesa_glsl_parse_state *state,
863
* Push pending layout qualifiers to the global values.
865
bool push_to_global(YYLTYPE *loc,
866
_mesa_glsl_parse_state *state);
868
bool validate_flags(YYLTYPE *loc,
869
_mesa_glsl_parse_state *state,
870
const ast_type_qualifier &allowed_flags,
871
const char *message, const char *name);
873
ast_subroutine_list *subroutine_list;
876
class ast_declarator_list;
878
class ast_struct_specifier : public ast_node {
880
ast_struct_specifier(const char *identifier,
881
ast_declarator_list *declarator_list);
882
virtual void print(void) const;
884
virtual ir_rvalue *hir(exec_list *instructions,
885
struct _mesa_glsl_parse_state *state);
888
ast_type_qualifier *layout;
889
/* List of ast_declarator_list * */
890
exec_list declarations;
892
const glsl_type *type;
897
class ast_type_specifier : public ast_node {
899
/** Construct a type specifier from a type name */
900
ast_type_specifier(const char *name)
901
: type(NULL), type_name(name), structure(NULL), array_specifier(NULL),
902
default_precision(ast_precision_none)
907
/** Construct a type specifier from a structure definition */
908
ast_type_specifier(ast_struct_specifier *s)
909
: type(NULL), type_name(s->name), structure(s), array_specifier(NULL),
910
default_precision(ast_precision_none)
915
ast_type_specifier(const glsl_type *t)
916
: type(t), type_name(t->name), structure(NULL), array_specifier(NULL),
917
default_precision(ast_precision_none)
922
const struct glsl_type *glsl_type(const char **name,
923
struct _mesa_glsl_parse_state *state)
926
virtual void print(void) const;
928
ir_rvalue *hir(exec_list *, struct _mesa_glsl_parse_state *);
930
const struct glsl_type *type;
931
const char *type_name;
932
ast_struct_specifier *structure;
934
ast_array_specifier *array_specifier;
936
/** For precision statements, this is the given precision; otherwise none. */
937
unsigned default_precision:2;
941
class ast_fully_specified_type : public ast_node {
943
virtual void print(void) const;
944
bool has_qualifiers(_mesa_glsl_parse_state *state) const;
946
ast_fully_specified_type() : qualifier(), specifier(NULL)
950
const struct glsl_type *glsl_type(const char **name,
951
struct _mesa_glsl_parse_state *state)
954
ast_type_qualifier qualifier;
955
ast_type_specifier *specifier;
959
class ast_declarator_list : public ast_node {
961
ast_declarator_list(ast_fully_specified_type *);
962
virtual void print(void) const;
964
virtual ir_rvalue *hir(exec_list *instructions,
965
struct _mesa_glsl_parse_state *state);
967
ast_fully_specified_type *type;
968
/** List of 'ast_declaration *' */
969
exec_list declarations;
972
* Flags for redeclarations. In these cases, no type is specified, to
973
* `type` is allowed to be NULL. In all other cases, this would be an error.
975
int invariant; /** < `invariant` redeclaration */
976
int precise; /** < `precise` redeclaration */
980
class ast_parameter_declarator : public ast_node {
982
ast_parameter_declarator() :
985
array_specifier(NULL),
986
formal_parameter(false),
992
virtual void print(void) const;
994
virtual ir_rvalue *hir(exec_list *instructions,
995
struct _mesa_glsl_parse_state *state);
997
ast_fully_specified_type *type;
998
const char *identifier;
999
ast_array_specifier *array_specifier;
1001
static void parameters_to_hir(exec_list *ast_parameters,
1002
bool formal, exec_list *ir_parameters,
1003
struct _mesa_glsl_parse_state *state);
1006
/** Is this parameter declaration part of a formal parameter list? */
1007
bool formal_parameter;
1010
* Is this parameter 'void' type?
1012
* This field is set by \c ::hir.
1018
class ast_function : public ast_node {
1022
virtual void print(void) const;
1024
virtual ir_rvalue *hir(exec_list *instructions,
1025
struct _mesa_glsl_parse_state *state);
1027
ast_fully_specified_type *return_type;
1028
const char *identifier;
1030
exec_list parameters;
1034
* Is this prototype part of the function definition?
1036
* Used by ast_function_definition::hir to process the parameters, etc.
1044
* Function signature corresponding to this function prototype instance
1046
* Used by ast_function_definition::hir to process the parameters, etc.
1051
class ir_function_signature *signature;
1053
friend class ast_function_definition;
1057
class ast_expression_statement : public ast_node {
1059
ast_expression_statement(ast_expression *);
1060
virtual void print(void) const;
1062
virtual ir_rvalue *hir(exec_list *instructions,
1063
struct _mesa_glsl_parse_state *state);
1065
ast_expression *expression;
1069
class ast_case_label : public ast_node {
1071
ast_case_label(ast_expression *test_value);
1072
virtual void print(void) const;
1074
virtual ir_rvalue *hir(exec_list *instructions,
1075
struct _mesa_glsl_parse_state *state);
1078
* An test value of NULL means 'default'.
1080
ast_expression *test_value;
1084
class ast_case_label_list : public ast_node {
1086
ast_case_label_list(void);
1087
virtual void print(void) const;
1089
virtual ir_rvalue *hir(exec_list *instructions,
1090
struct _mesa_glsl_parse_state *state);
1093
* A list of case labels.
1099
class ast_case_statement : public ast_node {
1101
ast_case_statement(ast_case_label_list *labels);
1102
virtual void print(void) const;
1104
virtual ir_rvalue *hir(exec_list *instructions,
1105
struct _mesa_glsl_parse_state *state);
1107
ast_case_label_list *labels;
1110
* A list of statements.
1116
class ast_case_statement_list : public ast_node {
1118
ast_case_statement_list(void);
1119
virtual void print(void) const;
1121
virtual ir_rvalue *hir(exec_list *instructions,
1122
struct _mesa_glsl_parse_state *state);
1131
class ast_switch_body : public ast_node {
1133
ast_switch_body(ast_case_statement_list *stmts);
1134
virtual void print(void) const;
1136
virtual ir_rvalue *hir(exec_list *instructions,
1137
struct _mesa_glsl_parse_state *state);
1139
ast_case_statement_list *stmts;
1143
class ast_selection_statement : public ast_node {
1145
ast_selection_statement(ast_expression *condition,
1146
ast_node *then_statement,
1147
ast_node *else_statement);
1148
virtual void print(void) const;
1150
virtual ir_rvalue *hir(exec_list *instructions,
1151
struct _mesa_glsl_parse_state *state);
1153
ast_expression *condition;
1154
ast_node *then_statement;
1155
ast_node *else_statement;
1159
class ast_switch_statement : public ast_node {
1161
ast_switch_statement(ast_expression *test_expression,
1163
virtual void print(void) const;
1165
virtual ir_rvalue *hir(exec_list *instructions,
1166
struct _mesa_glsl_parse_state *state);
1168
ast_expression *test_expression;
1172
void test_to_hir(exec_list *, struct _mesa_glsl_parse_state *);
1173
void eval_test_expression(exec_list *instructions,
1174
struct _mesa_glsl_parse_state *state);
1175
ir_rvalue *test_val;
1178
class ast_iteration_statement : public ast_node {
1180
ast_iteration_statement(int mode, ast_node *init, ast_node *condition,
1181
ast_expression *rest_expression, ast_node *body);
1183
virtual void print(void) const;
1185
virtual ir_rvalue *hir(exec_list *, struct _mesa_glsl_parse_state *);
1187
enum ast_iteration_modes {
1194
ast_node *init_statement;
1195
ast_node *condition;
1196
ast_expression *rest_expression;
1198
exec_list rest_instructions;
1203
* Generate IR from the condition of a loop
1205
* This is factored out of ::hir because some loops have the condition
1206
* test at the top (for and while), and others have it at the end (do-while).
1208
void condition_to_hir(exec_list *, struct _mesa_glsl_parse_state *);
1212
class ast_jump_statement : public ast_node {
1214
ast_jump_statement(int mode, ast_expression *return_value);
1215
virtual void print(void) const;
1217
virtual ir_rvalue *hir(exec_list *instructions,
1218
struct _mesa_glsl_parse_state *state);
1220
enum ast_jump_modes {
1227
ast_expression *opt_return_value;
1231
class ast_demote_statement : public ast_node {
1233
ast_demote_statement(void) {}
1234
virtual void print(void) const;
1236
virtual ir_rvalue *hir(exec_list *instructions,
1237
struct _mesa_glsl_parse_state *state);
1241
class ast_function_definition : public ast_node {
1243
ast_function_definition() : prototype(NULL), body(NULL)
1247
virtual void print(void) const;
1249
virtual ir_rvalue *hir(exec_list *instructions,
1250
struct _mesa_glsl_parse_state *state);
1252
ast_function *prototype;
1253
ast_compound_statement *body;
1256
class ast_interface_block : public ast_node {
1258
ast_interface_block(const char *instance_name,
1259
ast_array_specifier *array_specifier)
1260
: block_name(NULL), instance_name(instance_name),
1261
array_specifier(array_specifier)
1265
virtual ir_rvalue *hir(exec_list *instructions,
1266
struct _mesa_glsl_parse_state *state);
1268
ast_type_qualifier default_layout;
1269
ast_type_qualifier layout;
1270
const char *block_name;
1273
* Declared name of the block instance, if specified.
1275
* If the block does not have an instance name, this field will be
1278
const char *instance_name;
1280
/** List of ast_declarator_list * */
1281
exec_list declarations;
1284
* Declared array size of the block instance
1286
* If the block is not declared as an array or if the block instance array
1287
* is unsized, this field will be \c NULL.
1289
ast_array_specifier *array_specifier;
1294
* AST node representing a declaration of the output layout for tessellation
1297
class ast_tcs_output_layout : public ast_node
1300
ast_tcs_output_layout(const struct YYLTYPE &locp)
1305
virtual ir_rvalue *hir(exec_list *instructions,
1306
struct _mesa_glsl_parse_state *state);
1311
* AST node representing a declaration of the input layout for geometry
1314
class ast_gs_input_layout : public ast_node
1317
ast_gs_input_layout(const struct YYLTYPE &locp, GLenum prim_type)
1318
: prim_type(prim_type)
1323
virtual ir_rvalue *hir(exec_list *instructions,
1324
struct _mesa_glsl_parse_state *state);
1327
const GLenum prim_type;
1332
* AST node representing a decalaration of the input layout for compute
1335
class ast_cs_input_layout : public ast_node
1338
ast_cs_input_layout(const struct YYLTYPE &locp,
1339
ast_layout_expression *const *local_size)
1341
for (int i = 0; i < 3; i++) {
1342
this->local_size[i] = local_size[i];
1347
virtual ir_rvalue *hir(exec_list *instructions,
1348
struct _mesa_glsl_parse_state *state);
1351
ast_layout_expression *local_size[3];
1354
class ast_warnings_toggle : public ast_node {
1356
ast_warnings_toggle(bool _enable)
1362
virtual ir_rvalue *hir(exec_list *instructions,
1363
struct _mesa_glsl_parse_state *state);
1371
_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state);
1374
_mesa_ast_field_selection_to_hir(const ast_expression *expr,
1375
exec_list *instructions,
1376
struct _mesa_glsl_parse_state *state);
1379
_mesa_ast_array_index_to_hir(void *mem_ctx,
1380
struct _mesa_glsl_parse_state *state,
1381
ir_rvalue *array, ir_rvalue *idx,
1382
YYLTYPE &loc, YYLTYPE &idx_loc);
1385
_mesa_ast_set_aggregate_type(const glsl_type *type,
1386
ast_expression *expr);
1389
emit_function(_mesa_glsl_parse_state *state, ir_function *f);
1392
check_builtin_array_max_size(const char *name, unsigned size,
1393
YYLTYPE loc, struct _mesa_glsl_parse_state *state);
1395
extern void _mesa_ast_process_interface_block(YYLTYPE *locp,
1396
_mesa_glsl_parse_state *state,
1397
ast_interface_block *const block,
1398
const struct ast_type_qualifier &q);
1401
process_qualifier_constant(struct _mesa_glsl_parse_state *state,
1403
const char *qual_indentifier,
1404
ast_expression *const_expression,