// Copyright 2022 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.

package codelab;

import dev.cel.common.CelAbstractSyntaxTree;

/**

* Exercise1 evaluates a simple literal expression: "Hello, World!"

*

* <p>Compile, eval, profit!

*/

final class Exercise1 {

/**

* Compile the input {@code expression} and produce an AST. This method parses and type-checks the

* given expression to validate the syntax and type-agreement of the expression.

*

* @throws IllegalArgumentException If the expression is malformed due to syntactic or semantic

* errors.

*/

@SuppressWarnings("DoNotCallSuggester")

CelAbstractSyntaxTree compile(String expression) {

throw new UnsupportedOperationException("To be implemented");

}

/**

* Evaluates the compiled AST.

*

* @throws IllegalArgumentException If the compiled expression in AST fails to evaluate.

*/

@SuppressWarnings("DoNotCallSuggester")

Object eval(CelAbstractSyntaxTree ast) {

throw new UnsupportedOperationException("To be implemented");

}

}