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#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2018 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#endregion
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;
using static Google.Protobuf.Reflection.SourceCodeInfo.Types;
namespace Google.Protobuf.Reflection
{
/// <summary>
/// Provides additional information about the declaration of a descriptor,
/// such as source location and comments.
/// </summary>
public sealed class DescriptorDeclaration
{
/// <summary>
/// The descriptor this declaration relates to.
/// </summary>
public IDescriptor Descriptor { get; }
/// <summary>
/// The start line of the declaration within the source file. This value is 1-based.
/// </summary>
public int StartLine { get; }
/// <summary>
/// The start column of the declaration within the source file. This value is 1-based.
/// </summary>
public int StartColumn { get; }
/// <summary>
/// // The end line of the declaration within the source file. This value is 1-based.
/// </summary>
public int EndLine { get; }
/// <summary>
/// The end column of the declaration within the source file. This value is 1-based, and
/// exclusive. (The final character of the declaration is on the column before this value.)
/// </summary>
public int EndColumn { get; }
/// <summary>
/// Comments appearing before the declaration. Never null, but may be empty. Multi-line comments
/// are represented as a newline-separated string. Leading whitespace and the comment marker ("//")
/// are removed from each line.
/// </summary>
public string LeadingComments { get; }
/// <summary>
/// Comments appearing after the declaration. Never null, but may be empty. Multi-line comments
/// are represented as a newline-separated string. Leading whitespace and the comment marker ("//")
/// are removed from each line.
/// </summary>
public string TrailingComments { get; }
/// <summary>
/// Comments appearing before the declaration, but separated from it by blank
/// lines. Each string represents a newline-separated paragraph of comments.
/// Leading whitespace and the comment marker ("//") are removed from each line.
/// The list is never null, but may be empty. Likewise each element is never null, but may be empty.
/// </summary>
public IReadOnlyList<string> LeadingDetachedComments { get; }
private DescriptorDeclaration(IDescriptor descriptor, Location location)
{
// TODO: Validation
Descriptor = descriptor;
bool hasEndLine = location.Span.Count == 4;
// Lines and columns are 0-based in the proto.
StartLine = location.Span[0] + 1;
StartColumn = location.Span[1] + 1;
EndLine = hasEndLine ? location.Span[2] + 1 : StartLine;
EndColumn = location.Span[hasEndLine ? 3 : 2] + 1;
LeadingComments = location.LeadingComments;
TrailingComments = location.TrailingComments;
LeadingDetachedComments = new ReadOnlyCollection<string>(location.LeadingDetachedComments.ToList());
}
internal static DescriptorDeclaration FromProto(IDescriptor descriptor, Location location) =>
new DescriptorDeclaration(descriptor, location);
}
}
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