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#ifndef SRC_TINT_LANG_WGSL_AST_ENABLE_H_
#define SRC_TINT_LANG_WGSL_AST_ENABLE_H_

#include <string>
#include <utility>
#include <vector>

#include "src/tint/lang/wgsl/ast/extension.h"

namespace tint::ast {

/// An "enable" directive. Example:
/// ```
///   // Enable an extension named "f16"
///   enable f16;
/// ```
class Enable final : public 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(GenerationID pid, NodeID nid, const Source& src, 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(wgsl::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 tint::Vector<const Extension*, 4> extensions;
};

}  // namespace tint::ast

#endif  // SRC_TINT_LANG_WGSL_AST_ENABLE_H_