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Copy pathEnumerators.cs
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227 lines (192 loc) · 7.1 KB
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using System;
using System.Collections;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Text;
using ICSharpCode.NRefactory.PatternMatching;
using JSIL.Ast.Traversal;
using JSIL.Internal;
namespace JSIL.Ast.Enumerators {
public struct JSNodeChildren : IEnumerable<JSNode> {
public readonly JSNodeChildEnumerator EnumeratorTemplate;
public JSNodeChildren (JSNode node, JSNodeTraversalData traversalData, bool includeSelf) {
EnumeratorTemplate = new JSNodeChildEnumerator(node, traversalData, includeSelf);
}
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
public JSNodeChildEnumerator GetEnumerator () {
return EnumeratorTemplate;
}
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
System.Collections.Generic.IEnumerator<JSNode> System.Collections.Generic.IEnumerable<JSNode>.GetEnumerator () {
return EnumeratorTemplate;
}
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator () {
return EnumeratorTemplate;
}
}
public struct JSNodeChildrenRecursive : IEnumerable<JSNode> {
public readonly JSNode Node;
public readonly JSNodeTraversalData TraversalData;
public readonly bool IncludeSelf;
public JSNodeChildrenRecursive (JSNode node, JSNodeTraversalData traversalData, bool includeSelf) {
Node = node;
TraversalData = traversalData;
IncludeSelf = includeSelf;
}
public IEnumerator<JSNode> GetEnumerator () {
if (IncludeSelf)
yield return Node;
var list = new LinkedList<JSNode>();
using (var inner = new JSNodeChildEnumerator(Node, TraversalData, false))
while (inner.MoveNext()) {
var node = inner.Current;
if (node != null)
list.AddLast(node);
}
while (list.Count > 0) {
var current = list.First;
using (var e = current.Value.Children.EnumeratorTemplate)
while (e.MoveNext()) {
var leaf = e.Current;
if (leaf != null)
list.AddBefore(current, leaf);
}
list.Remove(current);
yield return current.Value;
}
}
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
IEnumerator IEnumerable.GetEnumerator () {
return GetEnumerator();
}
}
public struct JSNodeChildEnumerator : IEnumerator<JSNode> {
public readonly JSNodeTraversalData TraversalData;
public readonly JSNode Node;
public readonly bool IncludeSelf;
internal readonly int RecordCount;
internal int _Index;
internal JSNodeTraversalArrayRecord _ArrayRecord;
internal JSNodeTraversalArrayRecordState _ArrayRecordState;
internal JSNode _Current;
internal string _CurrentName;
public JSNodeChildEnumerator (JSNode node, JSNodeTraversalData traversalData, bool includeSelf) {
TraversalData = traversalData;
Node = node;
IncludeSelf = includeSelf;
RecordCount = traversalData.Records.Length;
_Index = IncludeSelf ? -2 : -1;
_ArrayRecord = null;
_ArrayRecordState = default(JSNodeTraversalArrayRecordState);
_Current = null;
_CurrentName = null;
}
public string CurrentName {
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
get { return _CurrentName; }
}
public JSNode Current {
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
get { return _Current; }
}
public void Dispose () {
}
object System.Collections.IEnumerator.Current {
get { return _Current; }
}
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
private bool MoveNextArray () {
if (_ArrayRecord.MoveNext(ref _ArrayRecordState)) {
_Current = _ArrayRecordState.CurrentNode;
_CurrentName = _ArrayRecordState.CurrentName;
return true;
} else {
_ArrayRecord = null;
return false;
}
}
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
private bool MoveNextElement (JSNodeTraversalElementRecord elementRecord) {
elementRecord.Get(Node, out _Current, out _CurrentName);
return _Current != null;
}
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
private void MoveNextArrayRecord (JSNodeTraversalArrayRecord arrayRecord) {
_ArrayRecord = arrayRecord;
_ArrayRecordState = arrayRecord.StartEnumeration(Node);
}
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
public bool MoveNext () {
_Current = null;
_CurrentName = null;
while (true) {
var isEnumeratingArray = _ArrayRecord != null;
if (!isEnumeratingArray || (_Index < 0))
_Index += 1;
if (_Index >= RecordCount)
return false;
if (_Index < 0) {
if (IncludeSelf) {
_Current = Node;
_CurrentName = "Self";
return true;
} else
// FIXME: Throw?
return false;
}
if (!isEnumeratingArray) {
var record = TraversalData.Records[_Index];
var elementRecord = record as JSNodeTraversalElementRecord;
if (elementRecord != null) {
if (MoveNextElement(elementRecord))
return true;
} else {
var arrayRecord = record as JSNodeTraversalArrayRecord;
if (arrayRecord != null)
MoveNextArrayRecord(arrayRecord);
else
// FIXME: Throw?
return false;
}
} else {
if (MoveNextArray())
return true;
}
}
}
#if TARGETTING_FX_4_5
[MethodImpl(MethodImplOptions.AggressiveInlining)]
#endif
public void Reset () {
_Index = IncludeSelf ? -2 : -1;
_ArrayRecord = null;
_Current = null;
_CurrentName = null;
}
}
}