// Copyright 2021 The Dawn & Tint Authors // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are met: // // 1. Redistributions of source code must retain the above copyright notice, this // list of conditions and the following disclaimer. // // 2. Redistributions in binary form must reproduce the above copyright notice, // this list of conditions and the following disclaimer in the documentation // and/or other materials provided with the distribution. // // 3. Neither the name of the copyright holder nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef SRC_TINT_LANG_WGSL_SEM_VARIABLE_H_ #define SRC_TINT_LANG_WGSL_SEM_VARIABLE_H_ #include <optional> #include <utility> #include <vector> #include "src/tint/api/common/override_id.h" #include "src/tint/api/common/binding_point.h" #include "src/tint/lang/core/access.h" #include "src/tint/lang/core/address_space.h" #include "src/tint/lang/core/parameter_usage.h" #include "src/tint/lang/core/type/type.h" #include "src/tint/lang/wgsl/ast/parameter.h" #include "src/tint/lang/wgsl/sem/value_expression.h" #include "src/tint/utils/containers/unique_vector.h" // Forward declarations namespace tint::ast { class IdentifierExpression; class Parameter; class Variable; } // namespace tint::ast namespace tint::sem { class CallTarget; class VariableUser; } // namespace tint::sem namespace tint::sem { /// Variable is the base class for local variables, global variables and /// parameters. class Variable : public Castable<Variable, Node> { … }; /// LocalVariable is a function-scope variable class LocalVariable final : public Castable<LocalVariable, Variable> { … }; /// Attributes that can be applied to global variables struct GlobalVariableAttributes { … }; /// GlobalVariable is a module-scope variable class GlobalVariable final : public Castable<GlobalVariable, Variable> { … }; /// Attributes that can be applied to parameters struct ParameterAttributes { … }; /// Parameter is a function parameter class Parameter final : public Castable<Parameter, Variable> { … }; /// VariableUser holds the semantic information for an identifier expression /// node that resolves to a variable. class VariableUser final : public Castable<VariableUser, ValueExpression> { … }; /// A pair of sem::Variables. Can be hashed. VariablePair; } // namespace tint::sem namespace std { /// Custom std::hash specialization for VariablePair template <> class hash<tint::sem::VariablePair> { … }; } // namespace std #endif // SRC_TINT_LANG_WGSL_SEM_VARIABLE_H_