// Copyright 2020 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
//
//      http://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 com.google.api.generator.engine.ast;

import com.google.auto.value.AutoValue;
import com.google.common.collect.ImmutableList;
import java.util.List;

@AutoValue
public abstract class BlockStatement implements Statement {
  // TODO(unsupported): Named blocks.
  public abstract ImmutableList<Statement> body();

  public abstract boolean isStatic();

  @Override
  public void accept(AstNodeVisitor visitor) {
    visitor.visit(this);
  }

  public static Builder builder() {
    return new AutoValue_BlockStatement.Builder().setBody(ImmutableList.of()).setIsStatic(false);
  }

  @AutoValue.Builder
  public abstract static class Builder {
    public abstract Builder setBody(List<Statement> body);

    public abstract Builder setIsStatic(boolean isStatic);

    abstract BlockStatement autoBuild();

    public BlockStatement build() {
      BlockStatement blockStatement = autoBuild();
      NodeValidator.checkNoNullElements(blockStatement.body(), "body", "block statement");
      return autoBuild();
    }
  }
}
