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30 #include "glsl_parser_extras.h"
32 struct ir_instruction
;
33 struct _mesa_glsl_parse_state
;
40 virtual void print(void) const;
41 virtual ir_rvalue
*hir(exec_list
*instructions
,
42 struct _mesa_glsl_parse_state
*state
);
45 * Retrieve the source location of an AST node
47 * This function is primarily used to get the source position of an AST node
48 * into a form that can be passed to \c _mesa_glsl_error.
50 * \sa _mesa_glsl_error, ast_node::set_location
52 struct YYLTYPE
get_location(void) const
56 locp
.source
= this->location
.source
;
57 locp
.first_line
= this->location
.line
;
58 locp
.first_column
= this->location
.column
;
59 locp
.last_line
= locp
.first_line
;
60 locp
.last_column
= locp
.first_column
;
66 * Set the source location of an AST node from a parser location
68 * \sa ast_node::get_location
70 void set_location(const struct YYLTYPE
&locp
)
72 this->location
.source
= locp
.source
;
73 this->location
.line
= locp
.first_line
;
74 this->location
.column
= locp
.first_column
;
92 ast_plus
, /**< Unary + operator. */
147 class ast_expression
: public ast_node
{
149 ast_expression(int oper
, ast_expression
*,
150 ast_expression
*, ast_expression
*);
152 ast_expression(const char *identifier
) :
155 subexpressions
[0] = NULL
;
156 subexpressions
[1] = NULL
;
157 subexpressions
[2] = NULL
;
158 primary_expression
.identifier
= (char *) identifier
;
161 static const char *operator_string(enum ast_operators op
);
163 virtual ir_rvalue
*hir(exec_list
*instructions
,
164 struct _mesa_glsl_parse_state
*state
);
166 virtual void print(void) const;
168 enum ast_operators oper
;
170 ast_expression
*subexpressions
[3];
175 float float_constant
;
176 unsigned uint_constant
;
178 } primary_expression
;
182 * List of expressions for an \c ast_sequence or parameters for an
183 * \c ast_function_call
185 exec_list expressions
;
188 class ast_expression_bin
: public ast_expression
{
190 ast_expression_bin(int oper
, ast_expression
*, ast_expression
*);
192 virtual void print(void) const;
196 * Subclass of expressions for function calls
198 class ast_function_expression
: public ast_expression
{
200 ast_function_expression(ast_expression
*callee
)
201 : ast_expression(ast_function_call
, callee
,
208 ast_function_expression(class ast_type_specifier
*type
)
209 : ast_expression(ast_function_call
, (ast_expression
*) type
,
216 bool is_constructor() const
221 virtual ir_rvalue
*hir(exec_list
*instructions
,
222 struct _mesa_glsl_parse_state
*state
);
226 * Is this function call actually a constructor?
233 * Number of possible operators for an ast_expression
235 * This is done as a define instead of as an additional value in the enum so
236 * that the compiler won't generate spurious messages like "warning:
237 * enumeration value ‘ast_num_operators’ not handled in switch"
239 #define AST_NUM_OPERATORS (ast_sequence + 1)
242 class ast_compound_statement
: public ast_node
{
244 ast_compound_statement(int new_scope
, ast_node
*statements
);
245 virtual void print(void) const;
247 virtual ir_rvalue
*hir(exec_list
*instructions
,
248 struct _mesa_glsl_parse_state
*state
);
251 exec_list statements
;
254 class ast_declaration
: public ast_node
{
256 ast_declaration(char *identifier
, int is_array
, ast_expression
*array_size
,
257 ast_expression
*initializer
);
258 virtual void print(void) const;
263 ast_expression
*array_size
;
265 ast_expression
*initializer
;
270 ast_precision_high
= 0, /**< Default precision. */
271 ast_precision_medium
,
275 struct ast_type_qualifier
{
276 unsigned invariant
:1;
278 unsigned attribute
:1;
286 unsigned noperspective
:1;
289 class ast_struct_specifier
: public ast_node
{
291 ast_struct_specifier(char *identifier
, ast_node
*declarator_list
);
292 virtual void print(void) const;
294 virtual ir_rvalue
*hir(exec_list
*instructions
,
295 struct _mesa_glsl_parse_state
*state
);
298 exec_list declarations
;
336 ast_sampler2drectshadow
,
337 ast_samplercubeshadow
,
340 ast_sampler1darrayshadow
,
341 ast_sampler2darrayshadow
,
360 class ast_type_specifier
: public ast_node
{
362 ast_type_specifier(int specifier
);
364 /** Construct a type specifier from a type name */
365 ast_type_specifier(const char *name
)
366 : type_specifier(ast_type_name
), type_name(name
), structure(NULL
),
367 is_array(false), array_size(NULL
), precision(ast_precision_high
)
372 /** Construct a type specifier from a structure definition */
373 ast_type_specifier(ast_struct_specifier
*s
)
374 : type_specifier(ast_struct
), type_name(s
->name
), structure(s
),
375 is_array(false), array_size(NULL
), precision(ast_precision_high
)
380 const struct glsl_type
*glsl_type(const char **name
,
381 struct _mesa_glsl_parse_state
*state
)
384 virtual void print(void) const;
386 ir_rvalue
*hir(exec_list
*, struct _mesa_glsl_parse_state
*);
388 enum ast_types type_specifier
;
390 const char *type_name
;
391 ast_struct_specifier
*structure
;
394 ast_expression
*array_size
;
396 unsigned precision
:2;
400 class ast_fully_specified_type
: public ast_node
{
402 virtual void print(void) const;
404 ast_type_qualifier qualifier
;
405 ast_type_specifier
*specifier
;
409 class ast_declarator_list
: public ast_node
{
411 ast_declarator_list(ast_fully_specified_type
*);
412 virtual void print(void) const;
414 virtual ir_rvalue
*hir(exec_list
*instructions
,
415 struct _mesa_glsl_parse_state
*state
);
417 ast_fully_specified_type
*type
;
418 exec_list declarations
;
421 * Special flag for vertex shader "invariant" declarations.
423 * Vertex shaders can contain "invariant" variable redeclarations that do
424 * not include a type. For example, "invariant gl_Position;". This flag
425 * is used to note these cases when no type is specified.
431 class ast_parameter_declarator
: public ast_node
{
433 virtual void print(void) const;
435 virtual ir_rvalue
*hir(exec_list
*instructions
,
436 struct _mesa_glsl_parse_state
*state
);
438 ast_fully_specified_type
*type
;
441 ast_expression
*array_size
;
443 static void parameters_to_hir(exec_list
*ast_parameters
,
444 bool formal
, exec_list
*ir_parameters
,
445 struct _mesa_glsl_parse_state
*state
);
448 /** Is this parameter declaration part of a formal parameter list? */
449 bool formal_parameter
;
452 * Is this parameter 'void' type?
454 * This field is set by \c ::hir.
460 class ast_function
: public ast_node
{
464 virtual void print(void) const;
466 virtual ir_rvalue
*hir(exec_list
*instructions
,
467 struct _mesa_glsl_parse_state
*state
);
469 ast_fully_specified_type
*return_type
;
472 exec_list parameters
;
476 * Is this prototype part of the function definition?
478 * Used by ast_function_definition::hir to process the parameters, etc.
486 * Function signature corresponding to this function prototype instance
488 * Used by ast_function_definition::hir to process the parameters, etc.
493 class ir_function_signature
*signature
;
495 friend class ast_function_definition
;
499 class ast_declaration_statement
: public ast_node
{
501 ast_declaration_statement(void);
510 class ast_function
*function
;
511 ast_declarator_list
*declarator
;
512 ast_type_specifier
*type
;
518 class ast_expression_statement
: public ast_node
{
520 ast_expression_statement(ast_expression
*);
521 virtual void print(void) const;
523 virtual ir_rvalue
*hir(exec_list
*instructions
,
524 struct _mesa_glsl_parse_state
*state
);
526 ast_expression
*expression
;
530 class ast_case_label
: public ast_node
{
534 * An expression of NULL means 'default'.
536 ast_expression
*expression
;
539 class ast_selection_statement
: public ast_node
{
541 ast_selection_statement(ast_expression
*condition
,
542 ast_node
*then_statement
,
543 ast_node
*else_statement
);
544 virtual void print(void) const;
546 virtual ir_rvalue
*hir(exec_list
*instructions
,
547 struct _mesa_glsl_parse_state
*state
);
549 ast_expression
*condition
;
550 ast_node
*then_statement
;
551 ast_node
*else_statement
;
555 class ast_switch_statement
: public ast_node
{
557 ast_expression
*expression
;
558 exec_list statements
;
561 class ast_iteration_statement
: public ast_node
{
563 ast_iteration_statement(int mode
, ast_node
*init
, ast_node
*condition
,
564 ast_expression
*rest_expression
, ast_node
*body
);
566 virtual void print(void) const;
568 virtual ir_rvalue
*hir(exec_list
*, struct _mesa_glsl_parse_state
*);
570 enum ast_iteration_modes
{
577 ast_node
*init_statement
;
579 ast_expression
*rest_expression
;
585 * Generate IR from the condition of a loop
587 * This is factored out of ::hir because some loops have the condition
588 * test at the top (for and while), and others have it at the end (do-while).
590 void condition_to_hir(class ir_loop
*, struct _mesa_glsl_parse_state
*);
594 class ast_jump_statement
: public ast_node
{
596 ast_jump_statement(int mode
, ast_expression
*return_value
);
597 virtual void print(void) const;
599 virtual ir_rvalue
*hir(exec_list
*instructions
,
600 struct _mesa_glsl_parse_state
*state
);
602 enum ast_jump_modes
{
609 ast_expression
*opt_return_value
;
613 class ast_function_definition
: public ast_node
{
615 virtual void print(void) const;
617 virtual ir_rvalue
*hir(exec_list
*instructions
,
618 struct _mesa_glsl_parse_state
*state
);
620 ast_function
*prototype
;
621 ast_compound_statement
*body
;
626 _mesa_ast_to_hir(exec_list
*instructions
, struct _mesa_glsl_parse_state
*state
);
628 extern struct ir_rvalue
*
629 _mesa_ast_field_selection_to_hir(const struct ast_expression
*expr
,
630 exec_list
*instructions
,
631 struct _mesa_glsl_parse_state
*state
);