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// Copyright 2023 Google LLC
//
// 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
//
// https://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 THIRD_PARTY_CEL_CPP_RUNTIME_REFERENCE_RESOLVER_H_
#define THIRD_PARTY_CEL_CPP_RUNTIME_REFERENCE_RESOLVER_H_
#include "absl/status/status.h"
#include "runtime/runtime_builder.h"
namespace cel {
enum class ReferenceResolverEnabled { kCheckedExpressionOnly, kAlways };
// Enables expression rewrites to normalize the AST representation of
// references to qualified names of enum constants, variables and functions.
//
// For parse-only expressions, this is only able to disambiguate functions based
// on registered overloads in the runtime.
//
// Note: This may require making a deep copy of the input expression in order to
// apply the rewrites.
//
// Applied adjustments:
// - for dot-qualified variable names represented as select operations,
// replaces select operations with an identifier.
// - for dot-qualified functions, replaces receiver call with a global
// function call.
// - for compile time constants (such as enum values), inlines the constant
// value as a literal.
absl::Status EnableReferenceResolver(RuntimeBuilder& builder,
ReferenceResolverEnabled enabled);
} // namespace cel
#endif // THIRD_PARTY_CEL_CPP_RUNTIME_REFERENCE_RESOLVER_H_