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// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
// Pipeline.cs
//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// (C) 2006 Jb Evain
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using Mono.Linker.Steps;
namespace Mono.Linker
{
public class Pipeline
{
readonly List<IStep> _steps;
public List<IMarkHandler> MarkHandlers { get; }
public Pipeline ()
{
_steps = new List<IStep> ();
MarkHandlers = new List<IMarkHandler> ();
}
public void PrependStep (IStep step)
{
_steps.Insert (0, step);
}
public void AppendStep (IStep step)
{
_steps.Add (step);
}
public void AppendMarkHandler (IMarkHandler step)
{
MarkHandlers.Add (step);
}
public void AddStepBefore (Type target, IStep step)
{
for (int i = 0; i < _steps.Count; i++) {
if (target.IsInstanceOfType (_steps[i])) {
_steps.Insert (i, step);
return;
}
}
throw new InternalErrorException ($"Step {step} could not be inserted before (not found) {target}");
}
public void AddStepBefore (IStep target, IStep step)
{
for (int i = 0; i < _steps.Count; i++) {
if (_steps[i] == target) {
_steps.Insert (i, step);
return;
}
}
throw new InternalErrorException ($"Step {step} could not be inserted before (not found) {target}");
}
public void AddMarkHandlerBefore (IMarkHandler target, IMarkHandler step)
{
for (int i = 0; i < MarkHandlers.Count; i++) {
if (MarkHandlers[i] == target) {
MarkHandlers.Insert (i, step);
return;
}
}
throw new InternalErrorException ($"Step {step} could not be inserted before (not found) {target}");
}
public void ReplaceStep (Type target, IStep step)
{
AddStepBefore (target, step);
RemoveStep (target);
}
public void AddStepAfter (Type target, IStep step)
{
for (int i = 0; i < _steps.Count; i++) {
if (target.IsInstanceOfType (_steps[i])) {
if (i == _steps.Count - 1)
_steps.Add (step);
else
_steps.Insert (i + 1, step);
return;
}
}
throw new InternalErrorException ($"Step {step} could not be inserted after (not found) {target}");
}
public void AddStepAfter (IStep target, IStep step)
{
for (int i = 0; i < _steps.Count; i++) {
if (_steps[i] == target) {
if (i == _steps.Count - 1)
_steps.Add (step);
else
_steps.Insert (i + 1, step);
return;
}
}
throw new InternalErrorException ($"Step {step} could not be inserted after (not found) {target}");
}
public void AddMarkHandlerAfter (IMarkHandler target, IMarkHandler step)
{
for (int i = 0; i < MarkHandlers.Count; i++) {
if (MarkHandlers[i] == target) {
if (i == MarkHandlers.Count - 1)
MarkHandlers.Add (step);
else
MarkHandlers.Insert (i + 1, step);
return;
}
}
throw new InternalErrorException ($"Step {step} could not be inserted after (not found) {target}");
}
public void RemoveStep (Type target)
{
for (int i = 0; i < _steps.Count; i++) {
if (_steps[i].GetType () != target)
continue;
_steps.RemoveAt (i);
break;
}
}
public void Process (LinkContext context)
{
while (_steps.Count > 0) {
IStep step = _steps[0];
ProcessStep (context, step);
_steps.Remove (step);
}
}
protected virtual void ProcessStep (LinkContext context, IStep step)
{
step.Process (context);
}
public IStep[] GetSteps ()
{
return _steps.ToArray ();
}
public void InitializeMarkHandlers (LinkContext context, MarkContext markContext)
{
while (MarkHandlers.Count > 0) {
IMarkHandler markHandler = MarkHandlers[0];
markHandler.Initialize (context, markContext);
MarkHandlers.Remove (markHandler);
}
}
public bool ContainsStep (Type type)
{
foreach (IStep step in _steps)
if (step.GetType () == type)
return true;
return false;
}
}
}
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