src/tint/lang/wgsl/ast/input_attachment_index_attribute.h

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#ifndef SRC_TINT_LANG_WGSL_AST_INPUT_ATTACHMENT_INDEX_ATTRIBUTE_H_
#define SRC_TINT_LANG_WGSL_AST_INPUT_ATTACHMENT_INDEX_ATTRIBUTE_H_

#include <string>

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

// Forward declarations
namespace tint::ast {
class Expression;
}

namespace tint::ast {

/// An input attachment attribute (enabled with the input attachments extension)
class InputAttachmentIndexAttribute final
    : public Castable<InputAttachmentIndexAttribute, Attribute> {
  public:
    /// constructor
    /// @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 expr the input attachment index value
    InputAttachmentIndexAttribute(GenerationID pid,
                                  NodeID nid,
                                  const Source& src,
                                  const Expression* expr);
    ~InputAttachmentIndexAttribute() override;

    /// @returns the WGSL name for the attribute
    std::string Name() const override;

    /// Clones this node and all transitive child nodes using the `CloneContext`
    /// `ctx`.
    /// @param ctx the clone context
    /// @return the newly cloned node
    const InputAttachmentIndexAttribute* Clone(CloneContext& ctx) const override;

    /// The index value expression
    const Expression* const expr;
};

}  // namespace tint::ast

#endif  // SRC_TINT_LANG_WGSL_AST_INPUT_ATTACHMENT_INDEX_ATTRIBUTE_H_