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aa037ac489
Change sem::Constant to be an interface to the constant data. Implement this so that zero-initialized data doesn't need to allocate the full size of the type. This also makes usage a lot cleaner (no more flattened-list of elements!), and gives us a clear path for supporting constant structures if/when we want to support them. Bug: chromium:1339558 Bug: chromium:1339561 Bug: chromium:1339580 Bug: chromium:1339597 Change-Id: Ifcd456f69aee18d5b84befa896d7b0189d68c2dd Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/94942 Reviewed-by: Dan Sinclair <dsinclair@chromium.org> Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Ben Clayton <bclayton@google.com> Commit-Queue: Ben Clayton <bclayton@chromium.org>
49 lines
1.8 KiB
C++
49 lines
1.8 KiB
C++
// Copyright 2022 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0(the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_TINT_SEM_MATERIALIZE_H_
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#define SRC_TINT_SEM_MATERIALIZE_H_
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#include "src/tint/sem/expression.h"
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namespace tint::sem {
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/// Materialize is a semantic expression which represents the materialization of a value of an
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/// abstract numeric type to a value of a concrete type.
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/// Abstract numeric materialization is implicit in WGSL, so the Materialize semantic node shares
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/// the same AST node as the inner semantic node.
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/// Abstract numerics types may only be used by compile-time expressions, so a Materialize semantic
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/// node must have a valid Constant value.
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class Materialize final : public Castable<Materialize, Expression> {
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public:
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/// Constructor
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/// @param expr the inner expression, being materialized
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/// @param statement the statement that owns this expression
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/// @param constant the constant value of this expression
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Materialize(const Expression* expr, const Statement* statement, const Constant* constant);
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/// Destructor
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~Materialize() override;
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/// @return the target of the call
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const Expression* Expr() const { return expr_; }
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private:
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Expression const* const expr_;
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};
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} // namespace tint::sem
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#endif // SRC_TINT_SEM_MATERIALIZE_H_
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