xserver and mesa git update 28-12-2010

1 files changed, 721 insertions, 698 deletions

diff --git a/mesalib/src/glsl/ast.h b/mesalib/src/glsl/ast.h
index d7bf90925..5e9c045bf 100644
--- a/mesalib/src/glsl/ast.h
+++ b/mesalib/src/glsl/ast.h
@@ -1,698 +1,721 @@
-/* -*- c++ -*- */
-/*
- * Copyright © 2009 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#pragma once
-#ifndef AST_H
-#define AST_H
-
-#include "list.h"
-#include "glsl_parser_extras.h"
-
-struct _mesa_glsl_parse_state;
-
-struct YYLTYPE;
-
-/**
- * \defgroup AST Abstract syntax tree node definitions
- *
- * An abstract syntax tree is generated by the parser.  This is a fairly
- * direct representation of the gramma derivation for the source program.
- * No symantic checking is done during the generation of the AST.  Only
- * syntactic checking is done.  Symantic checking is performed by a later
- * stage that converts the AST to a more generic intermediate representation.
- *
- *@{
- */
-/**
- * Base class of all abstract syntax tree nodes
- */
-class ast_node {
-public:
-   /* Callers of this talloc-based new need not call delete. It's
-    * easier to just talloc_free 'ctx' (or any of its ancestors). */
-   static void* operator new(size_t size, void *ctx)
-   {
-      void *node;
-
-      node = talloc_zero_size(ctx, size);
-      assert(node != NULL);
-
-      return node;
-   }
-
-   /* If the user *does* call delete, that's OK, we will just
-    * talloc_free in that case. */
-   static void operator delete(void *table)
-   {
-      talloc_free(table);
-   }
-
-   /**
-    * Print an AST node in something approximating the original GLSL code
-    */
-   virtual void print(void) const;
-
-   /**
-    * Convert the AST node to the high-level intermediate representation
-    */
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   /**
-    * Retrieve the source location of an AST node
-    *
-    * This function is primarily used to get the source position of an AST node
-    * into a form that can be passed to \c _mesa_glsl_error.
-    *
-    * \sa _mesa_glsl_error, ast_node::set_location
-    */
-   struct YYLTYPE get_location(void) const
-   {
-      struct YYLTYPE locp;
-
-      locp.source = this->location.source;
-      locp.first_line = this->location.line;
-      locp.first_column = this->location.column;
-      locp.last_line = locp.first_line;
-      locp.last_column = locp.first_column;
-
-      return locp;
-   }
-
-   /**
-    * Set the source location of an AST node from a parser location
-    *
-    * \sa ast_node::get_location
-    */
-   void set_location(const struct YYLTYPE &locp)
-   {
-      this->location.source = locp.source;
-      this->location.line = locp.first_line;
-      this->location.column = locp.first_column;
-   }
-
-   /**
-    * Source location of the AST node.
-    */
-   struct {
-      unsigned source;    /**< GLSL source number. */
-      unsigned line;      /**< Line number within the source string. */
-      unsigned column;    /**< Column in the line. */
-   } location;
-
-   exec_node link;
-
-protected:
-   /**
-    * The only constructor is protected so that only derived class objects can
-    * be created.
-    */
-   ast_node(void);
-};
-
-
-/**
- * Operators for AST expression nodes.
- */
-enum ast_operators {
-   ast_assign,
-   ast_plus,        /**< Unary + operator. */
-   ast_neg,
-   ast_add,
-   ast_sub,
-   ast_mul,
-   ast_div,
-   ast_mod,
-   ast_lshift,
-   ast_rshift,
-   ast_less,
-   ast_greater,
-   ast_lequal,
-   ast_gequal,
-   ast_equal,
-   ast_nequal,
-   ast_bit_and,
-   ast_bit_xor,
-   ast_bit_or,
-   ast_bit_not,
-   ast_logic_and,
-   ast_logic_xor,
-   ast_logic_or,
-   ast_logic_not,
-
-   ast_mul_assign,
-   ast_div_assign,
-   ast_mod_assign,
-   ast_add_assign,
-   ast_sub_assign,
-   ast_ls_assign,
-   ast_rs_assign,
-   ast_and_assign,
-   ast_xor_assign,
-   ast_or_assign,
-
-   ast_conditional,
-
-   ast_pre_inc,
-   ast_pre_dec,
-   ast_post_inc,
-   ast_post_dec,
-   ast_field_selection,
-   ast_array_index,
-
-   ast_function_call,
-
-   ast_identifier,
-   ast_int_constant,
-   ast_uint_constant,
-   ast_float_constant,
-   ast_bool_constant,
-
-   ast_sequence
-};
-
-/**
- * Representation of any sort of expression.
- */
-class ast_expression : public ast_node {
-public:
-   ast_expression(int oper, ast_expression *,
-		  ast_expression *, ast_expression *);
-
-   ast_expression(const char *identifier) :
-      oper(ast_identifier)
-   {
-      subexpressions[0] = NULL;
-      subexpressions[1] = NULL;
-      subexpressions[2] = NULL;
-      primary_expression.identifier = (char *) identifier;
-   }
-
-   static const char *operator_string(enum ast_operators op);
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   virtual void print(void) const;
-
-   enum ast_operators oper;
-
-   ast_expression *subexpressions[3];
-
-   union {
-      char *identifier;
-      int int_constant;
-      float float_constant;
-      unsigned uint_constant;
-      int bool_constant;
-   } primary_expression;
-
-
-   /**
-    * List of expressions for an \c ast_sequence or parameters for an
-    * \c ast_function_call
-    */
-   exec_list expressions;
-};
-
-class ast_expression_bin : public ast_expression {
-public:
-   ast_expression_bin(int oper, ast_expression *, ast_expression *);
-
-   virtual void print(void) const;
-};
-
-/**
- * Subclass of expressions for function calls
- */
-class ast_function_expression : public ast_expression {
-public:
-   ast_function_expression(ast_expression *callee)
-      : ast_expression(ast_function_call, callee,
-		       NULL, NULL),
-	cons(false)
-   {
-      /* empty */
-   }
-
-   ast_function_expression(class ast_type_specifier *type)
-      : ast_expression(ast_function_call, (ast_expression *) type,
-		       NULL, NULL),
-	cons(true)
-   {
-      /* empty */
-   }
-
-   bool is_constructor() const
-   {
-      return cons;
-   }
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-private:
-   /**
-    * Is this function call actually a constructor?
-    */
-   bool cons;
-};
-
-
-/**
- * Number of possible operators for an ast_expression
- *
- * This is done as a define instead of as an additional value in the enum so
- * that the compiler won't generate spurious messages like "warning:
- * enumeration value ‘ast_num_operators’ not handled in switch"
- */
-#define AST_NUM_OPERATORS (ast_sequence + 1)
-
-
-class ast_compound_statement : public ast_node {
-public:
-   ast_compound_statement(int new_scope, ast_node *statements);
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   int new_scope;
-   exec_list statements;
-};
-
-class ast_declaration : public ast_node {
-public:
-   ast_declaration(char *identifier, int is_array, ast_expression *array_size,
-		   ast_expression *initializer);
-   virtual void print(void) const;
-
-   char *identifier;
-   
-   int is_array;
-   ast_expression *array_size;
-
-   ast_expression *initializer;
-};
-
-
-enum {
-   ast_precision_high = 0, /**< Default precision. */
-   ast_precision_medium,
-   ast_precision_low
-};
-
-struct ast_type_qualifier {
-   unsigned invariant:1;
-   unsigned constant:1;
-   unsigned attribute:1;
-   unsigned varying:1;
-   unsigned in:1;
-   unsigned out:1;
-   unsigned centroid:1;
-   unsigned uniform:1;
-   unsigned smooth:1;
-   unsigned flat:1;
-   unsigned noperspective:1;
-
-   /** \name Layout qualifiers for GL_ARB_fragment_coord_conventions */
-   /*@{*/
-   unsigned origin_upper_left:1;
-   unsigned pixel_center_integer:1;
-   /*@}*/
-};
-
-class ast_struct_specifier : public ast_node {
-public:
-   ast_struct_specifier(char *identifier, ast_node *declarator_list);
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   char *name;
-   exec_list declarations;
-};
-
-
-enum ast_types {
-   ast_void,
-   ast_float,
-   ast_int,
-   ast_uint,
-   ast_bool,
-   ast_vec2,
-   ast_vec3,
-   ast_vec4,
-   ast_bvec2,
-   ast_bvec3,
-   ast_bvec4,
-   ast_ivec2,
-   ast_ivec3,
-   ast_ivec4,
-   ast_uvec2,
-   ast_uvec3,
-   ast_uvec4,
-   ast_mat2,
-   ast_mat2x3,
-   ast_mat2x4,
-   ast_mat3x2,
-   ast_mat3,
-   ast_mat3x4,
-   ast_mat4x2,
-   ast_mat4x3,
-   ast_mat4,
-   ast_sampler1d,
-   ast_sampler2d,
-   ast_sampler2drect,
-   ast_sampler3d,
-   ast_samplercube,
-   ast_sampler1dshadow,
-   ast_sampler2dshadow,
-   ast_sampler2drectshadow,
-   ast_samplercubeshadow,
-   ast_sampler1darray,
-   ast_sampler2darray,
-   ast_sampler1darrayshadow,
-   ast_sampler2darrayshadow,
-   ast_isampler1d,
-   ast_isampler2d,
-   ast_isampler3d,
-   ast_isamplercube,
-   ast_isampler1darray,
-   ast_isampler2darray,
-   ast_usampler1d,
-   ast_usampler2d,
-   ast_usampler3d,
-   ast_usamplercube,
-   ast_usampler1darray,
-   ast_usampler2darray,
-
-   ast_struct,
-   ast_type_name
-};
-
-
-class ast_type_specifier : public ast_node {
-public:
-   ast_type_specifier(int specifier);
-
-   /** Construct a type specifier from a type name */
-   ast_type_specifier(const char *name) 
-      : type_specifier(ast_type_name), type_name(name), structure(NULL),
-	is_array(false), array_size(NULL), precision(ast_precision_high)
-   {
-      /* empty */
-   }
-
-   /** Construct a type specifier from a structure definition */
-   ast_type_specifier(ast_struct_specifier *s)
-      : type_specifier(ast_struct), type_name(s->name), structure(s),
-	is_array(false), array_size(NULL), precision(ast_precision_high)
-   {
-      /* empty */
-   }
-
-   const struct glsl_type *glsl_type(const char **name,
-				     struct _mesa_glsl_parse_state *state)
-      const;
-
-   virtual void print(void) const;
-
-   ir_rvalue *hir(exec_list *, struct _mesa_glsl_parse_state *);
-
-   enum ast_types type_specifier;
-
-   const char *type_name;
-   ast_struct_specifier *structure;
-
-   int is_array;
-   ast_expression *array_size;
-
-   unsigned precision:2;
-};
-
-
-class ast_fully_specified_type : public ast_node {
-public:
-   virtual void print(void) const;
-   bool has_qualifiers() const;
-
-   ast_type_qualifier qualifier;
-   ast_type_specifier *specifier;
-};
-
-
-class ast_declarator_list : public ast_node {
-public:
-   ast_declarator_list(ast_fully_specified_type *);
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   ast_fully_specified_type *type;
-   exec_list declarations;
-
-   /**
-    * Special flag for vertex shader "invariant" declarations.
-    *
-    * Vertex shaders can contain "invariant" variable redeclarations that do
-    * not include a type.  For example, "invariant gl_Position;".  This flag
-    * is used to note these cases when no type is specified.
-    */
-   int invariant;
-};
-
-
-class ast_parameter_declarator : public ast_node {
-public:
-   ast_parameter_declarator()
-   {
-      this->identifier = NULL;
-      this->is_array = false;
-      this->array_size = 0;
-   }
-
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   ast_fully_specified_type *type;
-   char *identifier;
-   int is_array;
-   ast_expression *array_size;
-
-   static void parameters_to_hir(exec_list *ast_parameters,
-				 bool formal, exec_list *ir_parameters,
-				 struct _mesa_glsl_parse_state *state);
-
-private:
-   /** Is this parameter declaration part of a formal parameter list? */
-   bool formal_parameter;
-
-   /**
-    * Is this parameter 'void' type?
-    *
-    * This field is set by \c ::hir.
-    */
-   bool is_void;
-};
-
-
-class ast_function : public ast_node {
-public:
-   ast_function(void);
-
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   ast_fully_specified_type *return_type;
-   char *identifier;
-
-   exec_list parameters;
-
-private:
-   /**
-    * Is this prototype part of the function definition?
-    *
-    * Used by ast_function_definition::hir to process the parameters, etc.
-    * of the function.
-    *
-    * \sa ::hir
-    */
-   bool is_definition;
-
-   /**
-    * Function signature corresponding to this function prototype instance
-    *
-    * Used by ast_function_definition::hir to process the parameters, etc.
-    * of the function.
-    *
-    * \sa ::hir
-    */
-   class ir_function_signature *signature;
-
-   friend class ast_function_definition;
-};
-
-
-class ast_declaration_statement : public ast_node {
-public:
-   ast_declaration_statement(void);
-
-   enum {
-      ast_function,
-      ast_declaration,
-      ast_precision
-   } mode;
-
-   union {
-      class ast_function *function;
-      ast_declarator_list *declarator;
-      ast_type_specifier *type;
-      ast_node *node;
-   } declaration;
-};
-
-
-class ast_expression_statement : public ast_node {
-public:
-   ast_expression_statement(ast_expression *);
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   ast_expression *expression;
-};
-
-
-class ast_case_label : public ast_node {
-public:
-
-   /**
-    * An expression of NULL means 'default'.
-    */
-   ast_expression *expression;
-};
-
-class ast_selection_statement : public ast_node {
-public:
-   ast_selection_statement(ast_expression *condition,
-			   ast_node *then_statement,
-			   ast_node *else_statement);
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   ast_expression *condition;
-   ast_node *then_statement;
-   ast_node *else_statement;
-};
-
-
-class ast_switch_statement : public ast_node {
-public:
-   ast_expression *expression;
-   exec_list statements;
-};
-
-class ast_iteration_statement : public ast_node {
-public:
-   ast_iteration_statement(int mode, ast_node *init, ast_node *condition,
-			   ast_expression *rest_expression, ast_node *body);
-
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *, struct _mesa_glsl_parse_state *);
-
-   enum ast_iteration_modes {
-      ast_for,
-      ast_while,
-      ast_do_while
-   } mode;
-   
-
-   ast_node *init_statement;
-   ast_node *condition;
-   ast_expression *rest_expression;
-
-   ast_node *body;
-
-private:
-   /**
-    * Generate IR from the condition of a loop
-    *
-    * This is factored out of ::hir because some loops have the condition
-    * test at the top (for and while), and others have it at the end (do-while).
-    */
-   void condition_to_hir(class ir_loop *, struct _mesa_glsl_parse_state *);
-};
-
-
-class ast_jump_statement : public ast_node {
-public:
-   ast_jump_statement(int mode, ast_expression *return_value);
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   enum ast_jump_modes {
-      ast_continue,
-      ast_break,
-      ast_return,
-      ast_discard
-   } mode;
-
-   ast_expression *opt_return_value;
-};
-
-
-class ast_function_definition : public ast_node {
-public:
-   virtual void print(void) const;
-
-   virtual ir_rvalue *hir(exec_list *instructions,
-			  struct _mesa_glsl_parse_state *state);
-
-   ast_function *prototype;
-   ast_compound_statement *body;
-};
-/*@}*/
-
-extern void
-_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state);
-
-extern ir_rvalue *
-_mesa_ast_field_selection_to_hir(const ast_expression *expr,
-				 exec_list *instructions,
-				 struct _mesa_glsl_parse_state *state);
-
-#endif /* AST_H */
+/* -*- c++ -*- */

+/*

+ * Copyright © 2009 Intel Corporation

+ *

+ * Permission is hereby granted, free of charge, to any person obtaining a

+ * copy of this software and associated documentation files (the "Software"),

+ * to deal in the Software without restriction, including without limitation

+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,

+ * and/or sell copies of the Software, and to permit persons to whom the

+ * Software is furnished to do so, subject to the following conditions:

+ *

+ * The above copyright notice and this permission notice (including the next

+ * paragraph) shall be included in all copies or substantial portions of the

+ * Software.

+ *

+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

+ * DEALINGS IN THE SOFTWARE.

+ */

+

+#pragma once

+#ifndef AST_H

+#define AST_H

+

+#include "list.h"

+#include "glsl_parser_extras.h"

+

+struct _mesa_glsl_parse_state;

+

+struct YYLTYPE;

+

+/**

+ * \defgroup AST Abstract syntax tree node definitions

+ *

+ * An abstract syntax tree is generated by the parser.  This is a fairly

+ * direct representation of the gramma derivation for the source program.

+ * No symantic checking is done during the generation of the AST.  Only

+ * syntactic checking is done.  Symantic checking is performed by a later

+ * stage that converts the AST to a more generic intermediate representation.

+ *

+ *@{

+ */

+/**

+ * Base class of all abstract syntax tree nodes

+ */

+class ast_node {

+public:

+   /* Callers of this talloc-based new need not call delete. It's

+    * easier to just talloc_free 'ctx' (or any of its ancestors). */

+   static void* operator new(size_t size, void *ctx)

+   {

+      void *node;

+

+      node = talloc_zero_size(ctx, size);

+      assert(node != NULL);

+

+      return node;

+   }

+

+   /* If the user *does* call delete, that's OK, we will just

+    * talloc_free in that case. */

+   static void operator delete(void *table)

+   {

+      talloc_free(table);

+   }

+

+   /**

+    * Print an AST node in something approximating the original GLSL code

+    */

+   virtual void print(void) const;

+

+   /**

+    * Convert the AST node to the high-level intermediate representation

+    */

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   /**

+    * Retrieve the source location of an AST node

+    *

+    * This function is primarily used to get the source position of an AST node

+    * into a form that can be passed to \c _mesa_glsl_error.

+    *

+    * \sa _mesa_glsl_error, ast_node::set_location

+    */

+   struct YYLTYPE get_location(void) const

+   {

+      struct YYLTYPE locp;

+

+      locp.source = this->location.source;

+      locp.first_line = this->location.line;

+      locp.first_column = this->location.column;

+      locp.last_line = locp.first_line;

+      locp.last_column = locp.first_column;

+

+      return locp;

+   }

+

+   /**

+    * Set the source location of an AST node from a parser location

+    *

+    * \sa ast_node::get_location

+    */

+   void set_location(const struct YYLTYPE &locp)

+   {

+      this->location.source = locp.source;

+      this->location.line = locp.first_line;

+      this->location.column = locp.first_column;

+   }

+

+   /**

+    * Source location of the AST node.

+    */

+   struct {

+      unsigned source;    /**< GLSL source number. */

+      unsigned line;      /**< Line number within the source string. */

+      unsigned column;    /**< Column in the line. */

+   } location;

+

+   exec_node link;

+

+protected:

+   /**

+    * The only constructor is protected so that only derived class objects can

+    * be created.

+    */

+   ast_node(void);

+};

+

+

+/**

+ * Operators for AST expression nodes.

+ */

+enum ast_operators {

+   ast_assign,

+   ast_plus,        /**< Unary + operator. */

+   ast_neg,

+   ast_add,

+   ast_sub,

+   ast_mul,

+   ast_div,

+   ast_mod,

+   ast_lshift,

+   ast_rshift,

+   ast_less,

+   ast_greater,

+   ast_lequal,

+   ast_gequal,

+   ast_equal,

+   ast_nequal,

+   ast_bit_and,

+   ast_bit_xor,

+   ast_bit_or,

+   ast_bit_not,

+   ast_logic_and,

+   ast_logic_xor,

+   ast_logic_or,

+   ast_logic_not,

+

+   ast_mul_assign,

+   ast_div_assign,

+   ast_mod_assign,

+   ast_add_assign,

+   ast_sub_assign,

+   ast_ls_assign,

+   ast_rs_assign,

+   ast_and_assign,

+   ast_xor_assign,

+   ast_or_assign,

+

+   ast_conditional,

+

+   ast_pre_inc,

+   ast_pre_dec,

+   ast_post_inc,

+   ast_post_dec,

+   ast_field_selection,

+   ast_array_index,

+

+   ast_function_call,

+

+   ast_identifier,

+   ast_int_constant,

+   ast_uint_constant,

+   ast_float_constant,

+   ast_bool_constant,

+

+   ast_sequence

+};

+

+/**

+ * Representation of any sort of expression.

+ */

+class ast_expression : public ast_node {

+public:

+   ast_expression(int oper, ast_expression *,

+		  ast_expression *, ast_expression *);

+

+   ast_expression(const char *identifier) :

+      oper(ast_identifier)

+   {

+      subexpressions[0] = NULL;

+      subexpressions[1] = NULL;

+      subexpressions[2] = NULL;

+      primary_expression.identifier = (char *) identifier;

+   }

+

+   static const char *operator_string(enum ast_operators op);

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   virtual void print(void) const;

+

+   enum ast_operators oper;

+

+   ast_expression *subexpressions[3];

+

+   union {

+      char *identifier;

+      int int_constant;

+      float float_constant;

+      unsigned uint_constant;

+      int bool_constant;

+   } primary_expression;

+

+

+   /**

+    * List of expressions for an \c ast_sequence or parameters for an

+    * \c ast_function_call

+    */

+   exec_list expressions;

+};

+

+class ast_expression_bin : public ast_expression {

+public:

+   ast_expression_bin(int oper, ast_expression *, ast_expression *);

+

+   virtual void print(void) const;

+};

+

+/**

+ * Subclass of expressions for function calls

+ */

+class ast_function_expression : public ast_expression {

+public:

+   ast_function_expression(ast_expression *callee)

+      : ast_expression(ast_function_call, callee,

+		       NULL, NULL),

+	cons(false)

+   {

+      /* empty */

+   }

+

+   ast_function_expression(class ast_type_specifier *type)

+      : ast_expression(ast_function_call, (ast_expression *) type,

+		       NULL, NULL),

+	cons(true)

+   {

+      /* empty */

+   }

+

+   bool is_constructor() const

+   {

+      return cons;

+   }

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+private:

+   /**

+    * Is this function call actually a constructor?

+    */

+   bool cons;

+};

+

+

+/**

+ * Number of possible operators for an ast_expression

+ *

+ * This is done as a define instead of as an additional value in the enum so

+ * that the compiler won't generate spurious messages like "warning:

+ * enumeration value ‘ast_num_operators’ not handled in switch"

+ */

+#define AST_NUM_OPERATORS (ast_sequence + 1)

+

+

+class ast_compound_statement : public ast_node {

+public:

+   ast_compound_statement(int new_scope, ast_node *statements);

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   int new_scope;

+   exec_list statements;

+};

+

+class ast_declaration : public ast_node {

+public:

+   ast_declaration(char *identifier, int is_array, ast_expression *array_size,

+		   ast_expression *initializer);

+   virtual void print(void) const;

+

+   char *identifier;

+   

+   int is_array;

+   ast_expression *array_size;

+

+   ast_expression *initializer;

+};

+

+

+enum {

+   ast_precision_high = 0, /**< Default precision. */

+   ast_precision_medium,

+   ast_precision_low

+};

+

+struct ast_type_qualifier {

+   union {

+      struct {

+	 unsigned invariant:1;

+	 unsigned constant:1;

+	 unsigned attribute:1;

+	 unsigned varying:1;

+	 unsigned in:1;

+	 unsigned out:1;

+	 unsigned centroid:1;

+	 unsigned uniform:1;

+	 unsigned smooth:1;

+	 unsigned flat:1;

+	 unsigned noperspective:1;

+

+	 /** \name Layout qualifiers for GL_ARB_fragment_coord_conventions */

+	 /*@{*/

+	 unsigned origin_upper_left:1;

+	 unsigned pixel_center_integer:1;

+	 /*@}*/

+

+	 /**

+	  * Flag set if GL_ARB_explicit_attrib_location "location" layout

+	  * qualifier is used.

+	  */

+	 unsigned explicit_location:1;

+      } q;

+      unsigned i;

+   } flags;

+

+   /**

+    * Location specified via GL_ARB_explicit_attrib_location layout

+    *

+    * \note

+    * This field is only valid if \c explicit_location is set.

+    */

+   unsigned location;

+};

+

+class ast_struct_specifier : public ast_node {

+public:

+   ast_struct_specifier(char *identifier, ast_node *declarator_list);

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   char *name;

+   exec_list declarations;

+};

+

+

+enum ast_types {

+   ast_void,

+   ast_float,

+   ast_int,

+   ast_uint,

+   ast_bool,

+   ast_vec2,

+   ast_vec3,

+   ast_vec4,

+   ast_bvec2,

+   ast_bvec3,

+   ast_bvec4,

+   ast_ivec2,

+   ast_ivec3,

+   ast_ivec4,

+   ast_uvec2,

+   ast_uvec3,

+   ast_uvec4,

+   ast_mat2,

+   ast_mat2x3,

+   ast_mat2x4,

+   ast_mat3x2,

+   ast_mat3,

+   ast_mat3x4,

+   ast_mat4x2,

+   ast_mat4x3,

+   ast_mat4,

+   ast_sampler1d,

+   ast_sampler2d,

+   ast_sampler2drect,

+   ast_sampler3d,

+   ast_samplercube,

+   ast_sampler1dshadow,

+   ast_sampler2dshadow,

+   ast_sampler2drectshadow,

+   ast_samplercubeshadow,

+   ast_sampler1darray,

+   ast_sampler2darray,

+   ast_sampler1darrayshadow,

+   ast_sampler2darrayshadow,

+   ast_isampler1d,

+   ast_isampler2d,

+   ast_isampler3d,

+   ast_isamplercube,

+   ast_isampler1darray,

+   ast_isampler2darray,

+   ast_usampler1d,

+   ast_usampler2d,

+   ast_usampler3d,

+   ast_usamplercube,

+   ast_usampler1darray,

+   ast_usampler2darray,

+

+   ast_struct,

+   ast_type_name

+};

+

+

+class ast_type_specifier : public ast_node {

+public:

+   ast_type_specifier(int specifier);

+

+   /** Construct a type specifier from a type name */

+   ast_type_specifier(const char *name) 

+      : type_specifier(ast_type_name), type_name(name), structure(NULL),

+	is_array(false), array_size(NULL), precision(ast_precision_high)

+   {

+      /* empty */

+   }

+

+   /** Construct a type specifier from a structure definition */

+   ast_type_specifier(ast_struct_specifier *s)

+      : type_specifier(ast_struct), type_name(s->name), structure(s),

+	is_array(false), array_size(NULL), precision(ast_precision_high)

+   {

+      /* empty */

+   }

+

+   const struct glsl_type *glsl_type(const char **name,

+				     struct _mesa_glsl_parse_state *state)

+      const;

+

+   virtual void print(void) const;

+

+   ir_rvalue *hir(exec_list *, struct _mesa_glsl_parse_state *);

+

+   enum ast_types type_specifier;

+

+   const char *type_name;

+   ast_struct_specifier *structure;

+

+   int is_array;

+   ast_expression *array_size;

+

+   unsigned precision:2;

+};

+

+

+class ast_fully_specified_type : public ast_node {

+public:

+   virtual void print(void) const;

+   bool has_qualifiers() const;

+

+   ast_type_qualifier qualifier;

+   ast_type_specifier *specifier;

+};

+

+

+class ast_declarator_list : public ast_node {

+public:

+   ast_declarator_list(ast_fully_specified_type *);

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   ast_fully_specified_type *type;

+   exec_list declarations;

+

+   /**

+    * Special flag for vertex shader "invariant" declarations.

+    *

+    * Vertex shaders can contain "invariant" variable redeclarations that do

+    * not include a type.  For example, "invariant gl_Position;".  This flag

+    * is used to note these cases when no type is specified.

+    */

+   int invariant;

+};

+

+

+class ast_parameter_declarator : public ast_node {

+public:

+   ast_parameter_declarator()

+   {

+      this->identifier = NULL;

+      this->is_array = false;

+      this->array_size = 0;

+   }

+

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   ast_fully_specified_type *type;

+   char *identifier;

+   int is_array;

+   ast_expression *array_size;

+

+   static void parameters_to_hir(exec_list *ast_parameters,

+				 bool formal, exec_list *ir_parameters,

+				 struct _mesa_glsl_parse_state *state);

+

+private:

+   /** Is this parameter declaration part of a formal parameter list? */

+   bool formal_parameter;

+

+   /**

+    * Is this parameter 'void' type?

+    *

+    * This field is set by \c ::hir.

+    */

+   bool is_void;

+};

+

+

+class ast_function : public ast_node {

+public:

+   ast_function(void);

+

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   ast_fully_specified_type *return_type;

+   char *identifier;

+

+   exec_list parameters;

+

+private:

+   /**

+    * Is this prototype part of the function definition?

+    *

+    * Used by ast_function_definition::hir to process the parameters, etc.

+    * of the function.

+    *

+    * \sa ::hir

+    */

+   bool is_definition;

+

+   /**

+    * Function signature corresponding to this function prototype instance

+    *

+    * Used by ast_function_definition::hir to process the parameters, etc.

+    * of the function.

+    *

+    * \sa ::hir

+    */

+   class ir_function_signature *signature;

+

+   friend class ast_function_definition;

+};

+

+

+class ast_declaration_statement : public ast_node {

+public:

+   ast_declaration_statement(void);

+

+   enum {

+      ast_function,

+      ast_declaration,

+      ast_precision

+   } mode;

+

+   union {

+      class ast_function *function;

+      ast_declarator_list *declarator;

+      ast_type_specifier *type;

+      ast_node *node;

+   } declaration;

+};

+

+

+class ast_expression_statement : public ast_node {

+public:

+   ast_expression_statement(ast_expression *);

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   ast_expression *expression;

+};

+

+

+class ast_case_label : public ast_node {

+public:

+

+   /**

+    * An expression of NULL means 'default'.

+    */

+   ast_expression *expression;

+};

+

+class ast_selection_statement : public ast_node {

+public:

+   ast_selection_statement(ast_expression *condition,

+			   ast_node *then_statement,

+			   ast_node *else_statement);

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   ast_expression *condition;

+   ast_node *then_statement;

+   ast_node *else_statement;

+};

+

+

+class ast_switch_statement : public ast_node {

+public:

+   ast_expression *expression;

+   exec_list statements;

+};

+

+class ast_iteration_statement : public ast_node {

+public:

+   ast_iteration_statement(int mode, ast_node *init, ast_node *condition,

+			   ast_expression *rest_expression, ast_node *body);

+

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *, struct _mesa_glsl_parse_state *);

+

+   enum ast_iteration_modes {

+      ast_for,

+      ast_while,

+      ast_do_while

+   } mode;

+   

+

+   ast_node *init_statement;

+   ast_node *condition;

+   ast_expression *rest_expression;

+

+   ast_node *body;

+

+private:

+   /**

+    * Generate IR from the condition of a loop

+    *

+    * This is factored out of ::hir because some loops have the condition

+    * test at the top (for and while), and others have it at the end (do-while).

+    */

+   void condition_to_hir(class ir_loop *, struct _mesa_glsl_parse_state *);

+};

+

+

+class ast_jump_statement : public ast_node {

+public:

+   ast_jump_statement(int mode, ast_expression *return_value);

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   enum ast_jump_modes {

+      ast_continue,

+      ast_break,

+      ast_return,

+      ast_discard

+   } mode;

+

+   ast_expression *opt_return_value;

+};

+

+

+class ast_function_definition : public ast_node {

+public:

+   virtual void print(void) const;

+

+   virtual ir_rvalue *hir(exec_list *instructions,

+			  struct _mesa_glsl_parse_state *state);

+

+   ast_function *prototype;

+   ast_compound_statement *body;

+};

+/*@}*/

+

+extern void

+_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state);

+

+extern ir_rvalue *

+_mesa_ast_field_selection_to_hir(const ast_expression *expr,

+				 exec_list *instructions,

+				 struct _mesa_glsl_parse_state *state);

+

+void

+emit_function(_mesa_glsl_parse_state *state, exec_list *instructions,

+	      ir_function *f);

+

+#endif /* AST_H */