#ifndef THIRD_PARTY_CEL_CPP_EVAL_EVAL_EXPRESSION_STEP_BASE_H_

#define THIRD_PARTY_CEL_CPP_EVAL_EVAL_EXPRESSION_STEP_BASE_H_

#include <stdint.h>

#include "eval/eval/evaluator_core.h"

namespace google {

namespace api {

namespace expr {

namespace runtime {

class ExpressionStepBase : public ExpressionStep {

public:

explicit ExpressionStepBase(int64_t expr_id, bool comes_from_ast = true)

: id_(expr_id), comes_from_ast_(comes_from_ast) {}

// Non-copyable

ExpressionStepBase(const ExpressionStepBase&) = delete;

ExpressionStepBase& operator=(const ExpressionStepBase&) = delete;

// Returns corresponding expression object ID.

int64_t id() const override { return id_; }

// Returns if the execution step comes from AST.

bool ComesFromAst() const override { return comes_from_ast_; }

private:

int64_t id_;

bool comes_from_ast_;

};

} // namespace runtime

} // namespace expr

} // namespace api

} // namespace google

#endif // THIRD_PARTY_CEL_CPP_EVAL_EVAL_EXPRESSION_STEP_BASE_H_