1130 lines
28 KiB
C++
1130 lines
28 KiB
C++
/* -*- c++ -*- */
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/*
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* Copyright © 2009 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
|
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#ifndef AST_H
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#define AST_H
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#include "list.h"
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#include "glsl_parser_extras.h"
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struct _mesa_glsl_parse_state;
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struct YYLTYPE;
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/**
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* \defgroup AST Abstract syntax tree node definitions
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*
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* An abstract syntax tree is generated by the parser. This is a fairly
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* direct representation of the gramma derivation for the source program.
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* No symantic checking is done during the generation of the AST. Only
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* syntactic checking is done. Symantic checking is performed by a later
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* stage that converts the AST to a more generic intermediate representation.
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*
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*@{
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*/
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/**
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* Base class of all abstract syntax tree nodes
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*/
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class ast_node {
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public:
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DECLARE_RALLOC_CXX_OPERATORS(ast_node);
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/**
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* Print an AST node in something approximating the original GLSL code
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*/
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virtual void print(void) const;
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/**
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* Convert the AST node to the high-level intermediate representation
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*/
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virtual ir_rvalue *hir(exec_list *instructions,
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struct _mesa_glsl_parse_state *state);
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/**
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* Retrieve the source location of an AST node
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*
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* This function is primarily used to get the source position of an AST node
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* into a form that can be passed to \c _mesa_glsl_error.
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*
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* \sa _mesa_glsl_error, ast_node::set_location
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*/
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struct YYLTYPE get_location(void) const
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{
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struct YYLTYPE locp;
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locp.source = this->location.source;
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locp.first_line = this->location.first_line;
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locp.first_column = this->location.first_column;
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locp.last_line = this->location.last_line;
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locp.last_column = this->location.last_column;
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return locp;
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}
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/**
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* Set the source location of an AST node from a parser location
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*
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* \sa ast_node::get_location
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*/
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void set_location(const struct YYLTYPE &locp)
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{
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this->location.source = locp.source;
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this->location.first_line = locp.first_line;
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this->location.first_column = locp.first_column;
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this->location.last_line = locp.last_line;
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this->location.last_column = locp.last_column;
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}
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/**
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* Set the source location range of an AST node using two location nodes
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*
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* \sa ast_node::set_location
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*/
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void set_location_range(const struct YYLTYPE &begin, const struct YYLTYPE &end)
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{
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this->location.source = begin.source;
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this->location.first_line = begin.first_line;
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this->location.last_line = end.last_line;
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this->location.first_column = begin.first_column;
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this->location.last_column = end.last_column;
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}
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/**
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* Source location of the AST node.
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*/
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struct {
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unsigned source; /**< GLSL source number. */
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unsigned first_line; /**< First line number within the source string. */
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unsigned first_column; /**< First column in the first line. */
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unsigned last_line; /**< Last line number within the source string. */
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unsigned last_column; /**< Last column in the last line. */
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} location;
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exec_node link;
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protected:
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/**
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* The only constructor is protected so that only derived class objects can
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* be created.
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*/
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ast_node(void);
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};
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/**
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* Operators for AST expression nodes.
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*/
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enum ast_operators {
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ast_assign,
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ast_plus, /**< Unary + operator. */
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ast_neg,
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ast_add,
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ast_sub,
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ast_mul,
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ast_div,
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ast_mod,
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ast_lshift,
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ast_rshift,
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ast_less,
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ast_greater,
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ast_lequal,
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ast_gequal,
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ast_equal,
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ast_nequal,
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ast_bit_and,
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ast_bit_xor,
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ast_bit_or,
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ast_bit_not,
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ast_logic_and,
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ast_logic_xor,
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ast_logic_or,
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ast_logic_not,
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ast_mul_assign,
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ast_div_assign,
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ast_mod_assign,
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ast_add_assign,
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ast_sub_assign,
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ast_ls_assign,
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ast_rs_assign,
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ast_and_assign,
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ast_xor_assign,
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ast_or_assign,
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ast_conditional,
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ast_pre_inc,
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ast_pre_dec,
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ast_post_inc,
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ast_post_dec,
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ast_field_selection,
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ast_array_index,
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ast_function_call,
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ast_identifier,
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ast_int_constant,
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ast_uint_constant,
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ast_float_constant,
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ast_bool_constant,
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ast_sequence,
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ast_aggregate
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};
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/**
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* Representation of any sort of expression.
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*/
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class ast_expression : public ast_node {
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public:
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ast_expression(int oper, ast_expression *,
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ast_expression *, ast_expression *);
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ast_expression(const char *identifier) :
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oper(ast_identifier)
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{
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subexpressions[0] = NULL;
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subexpressions[1] = NULL;
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subexpressions[2] = NULL;
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primary_expression.identifier = identifier;
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this->non_lvalue_description = NULL;
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}
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static const char *operator_string(enum ast_operators op);
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virtual ir_rvalue *hir(exec_list *instructions,
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struct _mesa_glsl_parse_state *state);
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virtual void hir_no_rvalue(exec_list *instructions,
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struct _mesa_glsl_parse_state *state);
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ir_rvalue *do_hir(exec_list *instructions,
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struct _mesa_glsl_parse_state *state,
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bool needs_rvalue);
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virtual void print(void) const;
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enum ast_operators oper;
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ast_expression *subexpressions[3];
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union {
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const char *identifier;
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int int_constant;
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float float_constant;
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unsigned uint_constant;
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int bool_constant;
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} primary_expression;
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/**
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* List of expressions for an \c ast_sequence or parameters for an
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* \c ast_function_call
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*/
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exec_list expressions;
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/**
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* For things that can't be l-values, this describes what it is.
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*
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* This text is used by the code that generates IR for assignments to
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* detect and emit useful messages for assignments to some things that
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* can't be l-values. For example, pre- or post-incerement expressions.
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*
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* \note
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* This pointer may be \c NULL.
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*/
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const char *non_lvalue_description;
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};
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class ast_expression_bin : public ast_expression {
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public:
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ast_expression_bin(int oper, ast_expression *, ast_expression *);
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virtual void print(void) const;
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};
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/**
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* Subclass of expressions for function calls
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*/
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class ast_function_expression : public ast_expression {
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public:
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ast_function_expression(ast_expression *callee)
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: ast_expression(ast_function_call, callee,
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NULL, NULL),
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cons(false)
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{
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/* empty */
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}
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ast_function_expression(class ast_type_specifier *type)
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: ast_expression(ast_function_call, (ast_expression *) type,
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NULL, NULL),
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cons(true)
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{
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/* empty */
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}
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bool is_constructor() const
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{
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return cons;
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}
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virtual ir_rvalue *hir(exec_list *instructions,
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struct _mesa_glsl_parse_state *state);
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virtual void hir_no_rvalue(exec_list *instructions,
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struct _mesa_glsl_parse_state *state);
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private:
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/**
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* Is this function call actually a constructor?
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*/
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bool cons;
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};
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class ast_array_specifier : public ast_node {
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public:
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/** Unsized array specifier ([]) */
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explicit ast_array_specifier(const struct YYLTYPE &locp)
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: is_unsized_array(true)
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{
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set_location(locp);
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}
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/** Sized array specifier ([dim]) */
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ast_array_specifier(const struct YYLTYPE &locp, ast_expression *dim)
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: is_unsized_array(false)
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{
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set_location(locp);
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array_dimensions.push_tail(&dim->link);
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}
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void add_dimension(ast_expression *dim)
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{
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array_dimensions.push_tail(&dim->link);
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}
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virtual void print(void) const;
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/* If true, this means that the array has an unsized outermost dimension. */
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bool is_unsized_array;
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/* This list contains objects of type ast_node containing the
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* sized dimensions only, in outermost-to-innermost order.
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*/
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exec_list array_dimensions;
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};
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/**
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* C-style aggregate initialization class
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*
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* Represents C-style initializers of vectors, matrices, arrays, and
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* structures. E.g., vec3 pos = {1.0, 0.0, -1.0} is equivalent to
|
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* vec3 pos = vec3(1.0, 0.0, -1.0).
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*
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* Specified in GLSL 4.20 and GL_ARB_shading_language_420pack.
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*
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* \sa _mesa_ast_set_aggregate_type
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*/
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class ast_aggregate_initializer : public ast_expression {
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public:
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ast_aggregate_initializer()
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: ast_expression(ast_aggregate, NULL, NULL, NULL),
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constructor_type(NULL)
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{
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/* empty */
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}
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/**
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* glsl_type of the aggregate, which is inferred from the LHS of whatever
|
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* the aggregate is being used to initialize. This can't be inferred at
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* parse time (since the parser deals with ast_type_specifiers, not
|
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* glsl_types), so the parser leaves it NULL. However, the ast-to-hir
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* conversion code makes sure to fill it in with the appropriate type
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* before hir() is called.
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*/
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const glsl_type *constructor_type;
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||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
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struct _mesa_glsl_parse_state *state);
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||
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virtual void hir_no_rvalue(exec_list *instructions,
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struct _mesa_glsl_parse_state *state);
|
||
};
|
||
|
||
/**
|
||
* 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 {
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||
public:
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ast_compound_statement(int new_scope, ast_node *statements);
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virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
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||
struct _mesa_glsl_parse_state *state);
|
||
|
||
int new_scope;
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||
exec_list statements;
|
||
};
|
||
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||
class ast_declaration : public ast_node {
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||
public:
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||
ast_declaration(const char *identifier,
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ast_array_specifier *array_specifier,
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||
ast_expression *initializer);
|
||
virtual void print(void) const;
|
||
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const char *identifier;
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||
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ast_array_specifier *array_specifier;
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||
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||
ast_expression *initializer;
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||
};
|
||
|
||
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||
enum {
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||
ast_precision_high = 0,
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ast_precision_medium,
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ast_precision_low,
|
||
ast_precision_none, /**< Absence of precision qualifier. */
|
||
};
|
||
|
||
struct ast_type_qualifier {
|
||
DECLARE_RALLOC_CXX_OPERATORS(ast_type_qualifier);
|
||
|
||
union {
|
||
struct {
|
||
unsigned invariant:1;
|
||
unsigned precise:1;
|
||
unsigned constant:1;
|
||
unsigned attribute:1;
|
||
unsigned varying:1;
|
||
unsigned in:1;
|
||
unsigned out:1;
|
||
unsigned centroid:1;
|
||
unsigned sample: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;
|
||
/**
|
||
* Flag set if GL_ARB_explicit_attrib_location "index" layout
|
||
* qualifier is used.
|
||
*/
|
||
unsigned explicit_index:1;
|
||
|
||
/**
|
||
* Flag set if GL_ARB_shading_language_420pack "binding" layout
|
||
* qualifier is used.
|
||
*/
|
||
unsigned explicit_binding:1;
|
||
|
||
/**
|
||
* Flag set if GL_ARB_shader_atomic counter "offset" layout
|
||
* qualifier is used.
|
||
*/
|
||
unsigned explicit_offset:1;
|
||
|
||
/** \name Layout qualifiers for GL_AMD_conservative_depth */
|
||
/** \{ */
|
||
unsigned depth_any:1;
|
||
unsigned depth_greater:1;
|
||
unsigned depth_less:1;
|
||
unsigned depth_unchanged:1;
|
||
/** \} */
|
||
|
||
/** \name Layout qualifiers for GL_ARB_uniform_buffer_object */
|
||
/** \{ */
|
||
unsigned std140:1;
|
||
unsigned shared:1;
|
||
unsigned packed:1;
|
||
unsigned column_major:1;
|
||
unsigned row_major:1;
|
||
/** \} */
|
||
|
||
/** \name Layout qualifiers for GLSL 1.50 geometry shaders */
|
||
/** \{ */
|
||
unsigned prim_type:1;
|
||
unsigned max_vertices:1;
|
||
/** \} */
|
||
|
||
/**
|
||
* local_size_{x,y,z} flags for compute shaders. Bit 0 represents
|
||
* local_size_x, and so on.
|
||
*/
|
||
unsigned local_size:3;
|
||
|
||
/** \name Layout and memory qualifiers for ARB_shader_image_load_store. */
|
||
/** \{ */
|
||
unsigned early_fragment_tests:1;
|
||
unsigned explicit_image_format:1;
|
||
unsigned coherent:1;
|
||
unsigned _volatile:1;
|
||
unsigned restrict_flag:1;
|
||
unsigned read_only:1; /**< "readonly" qualifier. */
|
||
unsigned write_only:1; /**< "writeonly" qualifier. */
|
||
/** \} */
|
||
|
||
/** \name Layout qualifiers for GL_ARB_gpu_shader5 */
|
||
/** \{ */
|
||
unsigned invocations:1;
|
||
unsigned stream:1; /**< Has stream value assigned */
|
||
unsigned explicit_stream:1; /**< stream value assigned explicitly by shader code */
|
||
/** \} */
|
||
}
|
||
/** \brief Set of flags, accessed by name. */
|
||
q;
|
||
|
||
/** \brief Set of flags, accessed as a bitmask. */
|
||
uint64_t i;
|
||
} flags;
|
||
|
||
/** Precision of the type (highp/medium/lowp). */
|
||
unsigned precision:2;
|
||
|
||
/** Geometry shader invocations for GL_ARB_gpu_shader5. */
|
||
int invocations;
|
||
|
||
/**
|
||
* Location specified via GL_ARB_explicit_attrib_location layout
|
||
*
|
||
* \note
|
||
* This field is only valid if \c explicit_location is set.
|
||
*/
|
||
int location;
|
||
/**
|
||
* Index specified via GL_ARB_explicit_attrib_location layout
|
||
*
|
||
* \note
|
||
* This field is only valid if \c explicit_index is set.
|
||
*/
|
||
int index;
|
||
|
||
/** Maximum output vertices in GLSL 1.50 geometry shaders. */
|
||
int max_vertices;
|
||
|
||
/** Stream in GLSL 1.50 geometry shaders. */
|
||
unsigned stream;
|
||
|
||
/** Input or output primitive type in GLSL 1.50 geometry shaders */
|
||
GLenum prim_type;
|
||
|
||
/**
|
||
* Binding specified via GL_ARB_shading_language_420pack's "binding" keyword.
|
||
*
|
||
* \note
|
||
* This field is only valid if \c explicit_binding is set.
|
||
*/
|
||
int binding;
|
||
|
||
/**
|
||
* Offset specified via GL_ARB_shader_atomic_counter's "offset"
|
||
* keyword.
|
||
*
|
||
* \note
|
||
* This field is only valid if \c explicit_offset is set.
|
||
*/
|
||
int offset;
|
||
|
||
/**
|
||
* Local size specified via GL_ARB_compute_shader's "local_size_{x,y,z}"
|
||
* layout qualifier. Element i of this array is only valid if
|
||
* flags.q.local_size & (1 << i) is set.
|
||
*/
|
||
int local_size[3];
|
||
|
||
/**
|
||
* Image format specified with an ARB_shader_image_load_store
|
||
* layout qualifier.
|
||
*
|
||
* \note
|
||
* This field is only valid if \c explicit_image_format is set.
|
||
*/
|
||
GLenum image_format;
|
||
|
||
/**
|
||
* Base type of the data read from or written to this image. Only
|
||
* the following enumerants are allowed: GLSL_TYPE_UINT,
|
||
* GLSL_TYPE_INT, GLSL_TYPE_FLOAT.
|
||
*
|
||
* \note
|
||
* This field is only valid if \c explicit_image_format is set.
|
||
*/
|
||
glsl_base_type image_base_type;
|
||
|
||
/**
|
||
* Return true if and only if an interpolation qualifier is present.
|
||
*/
|
||
bool has_interpolation() const;
|
||
|
||
/**
|
||
* Return whether a layout qualifier is present.
|
||
*/
|
||
bool has_layout() const;
|
||
|
||
/**
|
||
* Return whether a storage qualifier is present.
|
||
*/
|
||
bool has_storage() const;
|
||
|
||
/**
|
||
* Return whether an auxiliary storage qualifier is present.
|
||
*/
|
||
bool has_auxiliary_storage() const;
|
||
|
||
/**
|
||
* \brief Return string representation of interpolation qualifier.
|
||
*
|
||
* If an interpolation qualifier is present, then return that qualifier's
|
||
* string representation. Otherwise, return null. For example, if the
|
||
* noperspective bit is set, then this returns "noperspective".
|
||
*
|
||
* If multiple interpolation qualifiers are somehow present, then the
|
||
* returned string is undefined but not null.
|
||
*/
|
||
const char *interpolation_string() const;
|
||
|
||
bool merge_qualifier(YYLTYPE *loc,
|
||
_mesa_glsl_parse_state *state,
|
||
ast_type_qualifier q);
|
||
|
||
bool merge_in_qualifier(YYLTYPE *loc,
|
||
_mesa_glsl_parse_state *state,
|
||
ast_type_qualifier q,
|
||
ast_node* &node);
|
||
|
||
};
|
||
|
||
class ast_declarator_list;
|
||
|
||
class ast_struct_specifier : public ast_node {
|
||
public:
|
||
/**
|
||
* \brief Make a shallow copy of an ast_struct_specifier.
|
||
*
|
||
* Use only if the objects are allocated from the same context and will not
|
||
* be modified. Zeros the inherited ast_node's fields.
|
||
*/
|
||
ast_struct_specifier(const ast_struct_specifier& that):
|
||
ast_node(), name(that.name), declarations(that.declarations),
|
||
is_declaration(that.is_declaration)
|
||
{
|
||
/* empty */
|
||
}
|
||
|
||
ast_struct_specifier(const char *identifier,
|
||
ast_declarator_list *declarator_list);
|
||
virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
const char *name;
|
||
/* List of ast_declarator_list * */
|
||
exec_list declarations;
|
||
bool is_declaration;
|
||
};
|
||
|
||
|
||
|
||
class ast_type_specifier : public ast_node {
|
||
public:
|
||
/**
|
||
* \brief Make a shallow copy of an ast_type_specifier, specifying array
|
||
* fields.
|
||
*
|
||
* Use only if the objects are allocated from the same context and will not
|
||
* be modified. Zeros the inherited ast_node's fields.
|
||
*/
|
||
ast_type_specifier(const ast_type_specifier *that,
|
||
ast_array_specifier *array_specifier)
|
||
: ast_node(), type_name(that->type_name), structure(that->structure),
|
||
array_specifier(array_specifier),
|
||
default_precision(that->default_precision)
|
||
{
|
||
/* empty */
|
||
}
|
||
|
||
/** Construct a type specifier from a type name */
|
||
ast_type_specifier(const char *name)
|
||
: type_name(name), structure(NULL), array_specifier(NULL),
|
||
default_precision(ast_precision_none)
|
||
{
|
||
/* empty */
|
||
}
|
||
|
||
/** Construct a type specifier from a structure definition */
|
||
ast_type_specifier(ast_struct_specifier *s)
|
||
: type_name(s->name), structure(s), array_specifier(NULL),
|
||
default_precision(ast_precision_none)
|
||
{
|
||
/* 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 *);
|
||
|
||
const char *type_name;
|
||
ast_struct_specifier *structure;
|
||
|
||
ast_array_specifier *array_specifier;
|
||
|
||
/** For precision statements, this is the given precision; otherwise none. */
|
||
unsigned default_precision:2;
|
||
};
|
||
|
||
|
||
class ast_fully_specified_type : public ast_node {
|
||
public:
|
||
virtual void print(void) const;
|
||
bool has_qualifiers() const;
|
||
|
||
ast_fully_specified_type() : qualifier(), specifier(NULL)
|
||
{
|
||
qualifier.precision = ast_precision_none;
|
||
}
|
||
|
||
const struct glsl_type *glsl_type(const char **name,
|
||
struct _mesa_glsl_parse_state *state)
|
||
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;
|
||
/** List of 'ast_declaration *' */
|
||
exec_list declarations;
|
||
|
||
/**
|
||
* Flags for redeclarations. In these cases, no type is specified, to
|
||
* `type` is allowed to be NULL. In all other cases, this would be an error.
|
||
*/
|
||
int invariant; /** < `invariant` redeclaration */
|
||
int precise; /** < `precise` redeclaration */
|
||
};
|
||
|
||
|
||
class ast_parameter_declarator : public ast_node {
|
||
public:
|
||
ast_parameter_declarator() :
|
||
type(NULL),
|
||
identifier(NULL),
|
||
array_specifier(NULL),
|
||
formal_parameter(false),
|
||
is_void(false)
|
||
{
|
||
/* empty */
|
||
}
|
||
|
||
virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
ast_fully_specified_type *type;
|
||
const char *identifier;
|
||
ast_array_specifier *array_specifier;
|
||
|
||
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;
|
||
const 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_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:
|
||
ast_case_label(ast_expression *test_value);
|
||
virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
/**
|
||
* An test value of NULL means 'default'.
|
||
*/
|
||
ast_expression *test_value;
|
||
};
|
||
|
||
|
||
class ast_case_label_list : public ast_node {
|
||
public:
|
||
ast_case_label_list(void);
|
||
virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
/**
|
||
* A list of case labels.
|
||
*/
|
||
exec_list labels;
|
||
};
|
||
|
||
|
||
class ast_case_statement : public ast_node {
|
||
public:
|
||
ast_case_statement(ast_case_label_list *labels);
|
||
virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
ast_case_label_list *labels;
|
||
|
||
/**
|
||
* A list of statements.
|
||
*/
|
||
exec_list stmts;
|
||
};
|
||
|
||
|
||
class ast_case_statement_list : public ast_node {
|
||
public:
|
||
ast_case_statement_list(void);
|
||
virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
/**
|
||
* A list of cases.
|
||
*/
|
||
exec_list cases;
|
||
};
|
||
|
||
|
||
class ast_switch_body : public ast_node {
|
||
public:
|
||
ast_switch_body(ast_case_statement_list *stmts);
|
||
virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
ast_case_statement_list *stmts;
|
||
};
|
||
|
||
|
||
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_switch_statement(ast_expression *test_expression,
|
||
ast_node *body);
|
||
virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
ast_expression *test_expression;
|
||
ast_node *body;
|
||
|
||
protected:
|
||
void test_to_hir(exec_list *, struct _mesa_glsl_parse_state *);
|
||
};
|
||
|
||
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;
|
||
|
||
/**
|
||
* 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(exec_list *, 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:
|
||
ast_function_definition() : prototype(NULL), body(NULL)
|
||
{
|
||
}
|
||
|
||
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;
|
||
};
|
||
|
||
class ast_interface_block : public ast_node {
|
||
public:
|
||
ast_interface_block(ast_type_qualifier layout,
|
||
const char *instance_name,
|
||
ast_array_specifier *array_specifier)
|
||
: layout(layout), block_name(NULL), instance_name(instance_name),
|
||
array_specifier(array_specifier)
|
||
{
|
||
}
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
ast_type_qualifier layout;
|
||
const char *block_name;
|
||
|
||
/**
|
||
* Declared name of the block instance, if specified.
|
||
*
|
||
* If the block does not have an instance name, this field will be
|
||
* \c NULL.
|
||
*/
|
||
const char *instance_name;
|
||
|
||
/** List of ast_declarator_list * */
|
||
exec_list declarations;
|
||
|
||
/**
|
||
* Declared array size of the block instance
|
||
*
|
||
* If the block is not declared as an array or if the block instance array
|
||
* is unsized, this field will be \c NULL.
|
||
*/
|
||
ast_array_specifier *array_specifier;
|
||
};
|
||
|
||
|
||
/**
|
||
* AST node representing a declaration of the input layout for geometry
|
||
* shaders.
|
||
*/
|
||
class ast_gs_input_layout : public ast_node
|
||
{
|
||
public:
|
||
ast_gs_input_layout(const struct YYLTYPE &locp, GLenum prim_type)
|
||
: prim_type(prim_type)
|
||
{
|
||
set_location(locp);
|
||
}
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
private:
|
||
const GLenum prim_type;
|
||
};
|
||
|
||
|
||
/**
|
||
* AST node representing a decalaration of the input layout for compute
|
||
* shaders.
|
||
*/
|
||
class ast_cs_input_layout : public ast_node
|
||
{
|
||
public:
|
||
ast_cs_input_layout(const struct YYLTYPE &locp, const unsigned *local_size)
|
||
{
|
||
memcpy(this->local_size, local_size, sizeof(this->local_size));
|
||
set_location(locp);
|
||
}
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
|
||
struct _mesa_glsl_parse_state *state);
|
||
|
||
private:
|
||
unsigned local_size[3];
|
||
};
|
||
|
||
/*@}*/
|
||
|
||
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);
|
||
|
||
extern ir_rvalue *
|
||
_mesa_ast_array_index_to_hir(void *mem_ctx,
|
||
struct _mesa_glsl_parse_state *state,
|
||
ir_rvalue *array, ir_rvalue *idx,
|
||
YYLTYPE &loc, YYLTYPE &idx_loc);
|
||
|
||
extern void
|
||
_mesa_ast_set_aggregate_type(const glsl_type *type,
|
||
ast_expression *expr);
|
||
|
||
void
|
||
emit_function(_mesa_glsl_parse_state *state, ir_function *f);
|
||
|
||
extern void
|
||
check_builtin_array_max_size(const char *name, unsigned size,
|
||
YYLTYPE loc, struct _mesa_glsl_parse_state *state);
|
||
|
||
#endif /* AST_H */
|