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

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#ifndef SRC_TINT_LANG_WGSL_AST_INDEX_ATTRIBUTE_H_
#define SRC_TINT_LANG_WGSL_AST_INDEX_ATTRIBUTE_H_

#include <string>

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

namespace tint::ast {

/// An id attribute for pipeline-overridable constants
class IndexAttribute final : public Castable<IndexAttribute, Attribute> {
  public:
    /// Create an index attribute.
    /// @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 numeric id expression
    IndexAttribute(GenerationID pid, NodeID nid, const Source& src, const Expression* expr);
    ~IndexAttribute() 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 IndexAttribute* Clone(CloneContext& ctx) const override;

    /// The id expression
    const Expression* const expr;
};

}  // namespace tint::ast

#endif  // SRC_TINT_LANG_WGSL_AST_INDEX_ATTRIBUTE_H_