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// This file is part of JavaSMT,
// an API wrapper for a collection of SMT solvers:
// https://github.com/sosy-lab/java-smt
//
// SPDX-FileCopyrightText: 2022 Dirk Beyer 
//
// SPDX-License-Identifier: Apache-2.0

package org.sosy_lab.java_smt.api;

import com.google.common.collect.ImmutableList;
import com.google.errorprone.annotations.Immutable;

/**
 * Function declaration, for both UFs and built-in functions (theory and boolean).
 *
 * Can be instantiated using {@link FormulaManager#makeApplication}
 */
@Immutable
public interface FunctionDeclaration {

  /**
   * @return Type of the function (LT / GT / UF / etc...).
   */
  FunctionDeclarationKind getKind();

  /**
   * @return Name of the function (UF name / "LT" / etc...).
   */
  String getName();

  /**
   * @return Sort of the function output.
   */
  FormulaType getType();

  /**
   * @return Sorts of the arguments.
   */
  ImmutableList> getArgumentTypes();
}