mirror of https://gitlab.freedesktop.org/mesa/mesa
569 lines
12 KiB
C++
569 lines
12 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 "main/simple_list.h"
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#include "list.h"
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#include "glsl_parser_extras.h"
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struct ir_instruction;
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struct _mesa_glsl_parse_state;
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struct YYLTYPE;
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class ast_node : public simple_node {
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public:
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virtual ~ast_node();
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virtual void print(void) const;
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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.line;
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locp.first_column = this->location.column;
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locp.last_line = locp.first_line;
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locp.last_column = locp.first_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.line = locp->first_line;
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this->location.column = locp->first_column;
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}
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int type;
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struct {
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unsigned source;
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unsigned line;
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unsigned column;
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} location;
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protected:
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ast_node(void);
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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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};
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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 = (char *) identifier;
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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 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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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.
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*/
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struct simple_node expressions;
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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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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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/**
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* Number of possible operators for an ast_expression
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*
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* This is done as a define instead of as an additional value in the enum so
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* that the compiler won't generate spurious messages like "warning:
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* enumeration value ‘ast_num_operators’ not handled in switch"
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*/
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#define AST_NUM_OPERATORS (ast_sequence + 1)
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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;
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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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int new_scope;
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struct simple_node statements;
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};
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class ast_declaration : public ast_node {
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public:
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ast_declaration(char *identifier, int is_array, ast_expression *array_size,
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ast_expression *initializer);
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virtual void print(void) const;
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char *identifier;
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int is_array;
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ast_expression *array_size;
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ast_expression *initializer;
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};
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enum {
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ast_precision_high = 0, /**< Default precision. */
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ast_precision_medium,
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ast_precision_low
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};
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struct ast_type_qualifier {
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unsigned invariant:1;
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unsigned constant:1;
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unsigned attribute:1;
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unsigned varying:1;
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unsigned in:1;
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unsigned out:1;
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unsigned centroid:1;
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unsigned uniform:1;
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unsigned smooth:1;
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unsigned flat:1;
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unsigned noperspective:1;
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};
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class ast_struct_specifier : public ast_node {
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public:
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ast_struct_specifier(char *identifier, ast_node *declarator_list);
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virtual void print(void) const;
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char *name;
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struct simple_node declarations;
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};
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enum ast_types {
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ast_void,
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ast_float,
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ast_int,
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ast_uint,
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ast_bool,
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ast_vec2,
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ast_vec3,
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ast_vec4,
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ast_bvec2,
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ast_bvec3,
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ast_bvec4,
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ast_ivec2,
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ast_ivec3,
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ast_ivec4,
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ast_uvec2,
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ast_uvec3,
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ast_uvec4,
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ast_mat2,
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ast_mat2x3,
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ast_mat2x4,
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ast_mat3x2,
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ast_mat3,
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ast_mat3x4,
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ast_mat4x2,
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ast_mat4x3,
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ast_mat4,
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ast_sampler1d,
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ast_sampler2d,
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ast_sampler3d,
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ast_samplercube,
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ast_sampler1dshadow,
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ast_sampler2dshadow,
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ast_samplercubeshadow,
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ast_sampler1darray,
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ast_sampler2darray,
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ast_sampler1darrayshadow,
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ast_sampler2darrayshadow,
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ast_isampler1d,
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ast_isampler2d,
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ast_isampler3d,
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ast_isamplercube,
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ast_isampler1darray,
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ast_isampler2darray,
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ast_usampler1d,
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ast_usampler2d,
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ast_usampler3d,
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ast_usamplercube,
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ast_usampler1darray,
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ast_usampler2darray,
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ast_struct,
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ast_type_name
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};
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class ast_type_specifier : public ast_node {
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public:
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ast_type_specifier(int specifier);
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/** Construct a type specifier from a type name */
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ast_type_specifier(const char *name)
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: type_specifier(ast_type_name), type_name(name), structure(NULL),
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is_array(false), array_size(NULL), precision(ast_precision_high)
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{
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/* empty */
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}
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/** Construct a type specifier from a structure definition */
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ast_type_specifier(ast_struct_specifier *s)
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: type_specifier(ast_struct), type_name(s->name), structure(s),
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is_array(false), array_size(NULL), precision(ast_precision_high)
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{
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/* empty */
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}
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virtual void print(void) const;
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enum ast_types type_specifier;
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const char *type_name;
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ast_struct_specifier *structure;
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int is_array;
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ast_expression *array_size;
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unsigned precision:2;
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};
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class ast_fully_specified_type : public ast_node {
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public:
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virtual void print(void) const;
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ast_type_qualifier qualifier;
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ast_type_specifier *specifier;
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};
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class ast_declarator_list : public ast_node {
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public:
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ast_declarator_list(ast_fully_specified_type *);
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virtual void print(void) const;
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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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ast_fully_specified_type *type;
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struct simple_node declarations;
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/**
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* Special flag for vertex shader "invariant" declarations.
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*
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* Vertex shaders can contain "invariant" variable redeclarations that do
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* not include a type. For example, "invariant gl_Position;". This flag
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* is used to note these cases when no type is specified.
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*/
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int invariant;
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};
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class ast_parameter_declarator : public ast_node {
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public:
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virtual void print(void) const;
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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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ast_fully_specified_type *type;
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char *identifier;
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int is_array;
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ast_expression *array_size;
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};
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class ast_function : public ast_node {
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public:
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ast_function(void);
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virtual void print(void) const;
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ast_fully_specified_type *return_type;
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char *identifier;
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struct simple_node parameters;
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};
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class ast_declaration_statement : public ast_node {
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public:
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ast_declaration_statement(void);
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enum {
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ast_function,
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ast_declaration,
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ast_precision
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} mode;
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union {
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class ast_function *function;
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ast_declarator_list *declarator;
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ast_type_specifier *type;
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ast_node *node;
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} declaration;
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};
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class ast_expression_statement : public ast_node {
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public:
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ast_expression_statement(ast_expression *);
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virtual void print(void) const;
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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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ast_expression *expression;
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};
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class ast_case_label : public ast_node {
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public:
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/**
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* An expression of NULL means 'default'.
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*/
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ast_expression *expression;
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};
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class ast_selection_statement : public ast_node {
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public:
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ast_selection_statement(ast_expression *condition,
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ast_node *then_statement,
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ast_node *else_statement);
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virtual void print(void) const;
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ast_expression *condition;
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ast_node *then_statement;
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ast_node *else_statement;
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};
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class ast_switch_statement : public ast_node {
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public:
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ast_expression *expression;
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struct simple_node statements;
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};
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class ast_iteration_statement : public ast_node {
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public:
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ast_iteration_statement(int mode, ast_node *init, ast_node *condition,
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ast_expression *rest_expression, ast_node *body);
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virtual void print(void) const;
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enum ast_iteration_modes {
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ast_for,
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ast_while,
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ast_do_while
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} mode;
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ast_node *init_statement;
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ast_node *condition;
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ast_expression *rest_expression;
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ast_node *body;
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};
|
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|
||
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||
class ast_jump_statement : public ast_node {
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||
public:
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||
ast_jump_statement(int mode, ast_expression *return_value);
|
||
virtual void print(void) const;
|
||
|
||
virtual ir_rvalue *hir(exec_list *instructions,
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struct _mesa_glsl_parse_state *state);
|
||
|
||
enum ast_jump_modes {
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ast_continue,
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ast_break,
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ast_return,
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ast_discard
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} mode;
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||
|
||
ast_expression *opt_return_value;
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};
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||
|
||
|
||
class ast_function_definition : public ast_node {
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||
public:
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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);
|
||
|
||
ast_function *prototype;
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||
ast_compound_statement *body;
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};
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|
||
|
||
extern void
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||
_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state);
|
||
|
||
extern struct ir_rvalue *
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||
_mesa_ast_field_selection_to_hir(const struct ast_expression *expr,
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||
exec_list *instructions,
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||
struct _mesa_glsl_parse_state *state);
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||
|
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#endif /* AST_H */
|