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// Copyright 2022 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_TINT_AST_ENABLE_H_
#define SRC_TINT_AST_ENABLE_H_
#include <string>
#include <utility>
#include <vector>
#include "src/tint/ast/extension.h"
namespace tint::ast {
/// An "enable" directive. Example:
/// ```
/// // Enable an extension named "f16"
/// enable f16;
/// ```
class Enable final : public utils::Castable<Enable, Node> {
public:
/// Create a extension
/// @param pid the identifier of the program that owns this node
/// @param nid the unique node identifier
/// @param src the source of this node
/// @param exts the extensions being enabled by this directive
Enable(ProgramID pid, NodeID nid, const Source& src, utils::VectorRef<const Extension*> exts);
/// Destructor
~Enable() override;
/// @param ext the extension to search for
/// @returns true if this Enable lists the given extension
bool HasExtension(builtin::Extension ext) const;
/// Clones this node and all transitive child nodes using the `CloneContext` `ctx`.
/// @param ctx the clone context
/// @return the newly cloned node
const Enable* Clone(CloneContext* ctx) const override;
/// The extensions being enabled by this directive
const utils::Vector<const Extension*, 4> extensions;
};
} // namespace tint::ast
#endif // SRC_TINT_AST_ENABLE_H_