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// 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,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "src/tint/lang/wgsl/sem/variable.h"
#include <utility>
#include "src/tint/lang/core/type/pointer.h"
#include "src/tint/lang/wgsl/ast/identifier_expression.h"
#include "src/tint/lang/wgsl/ast/parameter.h"
#include "src/tint/lang/wgsl/ast/variable.h"
TINT_INSTANTIATE_TYPEINFO(tint::sem::Variable);
TINT_INSTANTIATE_TYPEINFO(tint::sem::GlobalVariable);
TINT_INSTANTIATE_TYPEINFO(tint::sem::LocalVariable);
TINT_INSTANTIATE_TYPEINFO(tint::sem::Parameter);
TINT_INSTANTIATE_TYPEINFO(tint::sem::VariableUser);
namespace tint::sem {
Variable::Variable(const ast::Variable* declaration) : declaration_(declaration) {}
Variable::~Variable() = default;
LocalVariable::LocalVariable(const ast::Variable* declaration, const sem::Statement* statement)
: Base(declaration), statement_(statement) {}
LocalVariable::~LocalVariable() = default;
GlobalVariable::GlobalVariable(const ast::Variable* declaration) : Base(declaration) {}
GlobalVariable::~GlobalVariable() = default;
void GlobalVariable::AddTransitivelyReferencedOverride(const GlobalVariable* var) {
if (transitively_referenced_overrides_.Add(var)) {
for (auto* ref : var->TransitivelyReferencedOverrides()) {
AddTransitivelyReferencedOverride(ref);
}
}
}
Parameter::Parameter(const ast::Parameter* declaration,
uint32_t index /* = 0 */,
const core::type::Type* type /* = nullptr */,
core::ParameterUsage usage /* = core::ParameterUsage::kNone */)
: Base(declaration), index_(index), usage_(usage) {
SetType(type);
}
Parameter::~Parameter() = default;
VariableUser::VariableUser(const ast::IdentifierExpression* declaration,
core::EvaluationStage stage,
Statement* statement,
const core::constant::Value* constant,
sem::Variable* variable)
: Base(declaration,
variable->Type(),
stage,
statement,
constant,
/* has_side_effects */ false),
variable_(variable) {
auto* type = variable->Type();
if (type->Is<core::type::Pointer>() && variable->Initializer()) {
root_identifier_ = variable->Initializer()->RootIdentifier();
} else {
root_identifier_ = variable;
}
}
VariableUser::~VariableUser() = default;
const ast::IdentifierExpression* VariableUser::Declaration() const {
return static_cast<const ast::IdentifierExpression*>(Base::Declaration());
}
} // namespace tint::sem