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//------------------------------------------------------------------------------
// <copyright file="XmlSchemaObjectTable.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
//------------------------------------------------------------------------------
namespace System.Xml.Schema {
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
/// <include file='doc\XmlSchemaObjectTable.uex' path='docs/doc[@for="XmlSchemaObjectTable"]/*' />
public class XmlSchemaObjectTable {
Dictionary<XmlQualifiedName, XmlSchemaObject> table = new Dictionary<XmlQualifiedName,XmlSchemaObject>();
List<XmlSchemaObjectEntry> entries = new List<XmlSchemaObjectEntry>();
internal XmlSchemaObjectTable() {
}
internal void Add(XmlQualifiedName name, XmlSchemaObject value) {
Debug.Assert(!table.ContainsKey(name), "XmlSchemaObjectTable.Add: entry already exists");
table.Add(name, value);
entries.Add(new XmlSchemaObjectEntry(name, value));
}
internal void Insert(XmlQualifiedName name, XmlSchemaObject value) {
XmlSchemaObject oldValue = null;
if (table.TryGetValue(name, out oldValue)) {
table[name] = value; //set new value
Debug.Assert(oldValue != null);
int matchedIndex = FindIndexByValue(oldValue);
Debug.Assert(matchedIndex >= 0);
//set new entry
Debug.Assert(entries[matchedIndex].qname == name);
entries[matchedIndex] = new XmlSchemaObjectEntry(name, value);
}
else {
Add(name, value);
}
}
internal void Replace(XmlQualifiedName name, XmlSchemaObject value) {
XmlSchemaObject oldValue;
if (table.TryGetValue(name, out oldValue)) {
table[name] = value; //set new value
Debug.Assert(oldValue != null);
int matchedIndex = FindIndexByValue(oldValue);
Debug.Assert(entries[matchedIndex].qname == name);
entries[matchedIndex] = new XmlSchemaObjectEntry(name, value);
}
}
internal void Clear() {
table.Clear();
entries.Clear();
}
internal void Remove(XmlQualifiedName name) {
XmlSchemaObject value;
if (table.TryGetValue(name, out value)) {
table.Remove(name);
int matchedIndex = FindIndexByValue(value);
Debug.Assert(matchedIndex >= 0);
Debug.Assert(entries[matchedIndex].qname == name);
entries.RemoveAt(matchedIndex);
}
}
private int FindIndexByValue(XmlSchemaObject xso) {
int index;
for(index = 0; index < entries.Count; index++) {
if((object)entries[index].xso == (object)xso) {
return index;
}
}
return -1;
}
/// <include file='doc\XmlSchemaObjectTable.uex' path='docs/doc[@for="XmlSchemaObjectTable.Count"]/*' />
public int Count {
get {
Debug.Assert(table.Count == entries.Count);
return table.Count;
}
}
/// <include file='doc\XmlSchemaObjectTable.uex' path='docs/doc[@for="XmlSchemaObjectTable.Contains"]/*' />
public bool Contains(XmlQualifiedName name) {
return table.ContainsKey(name);
}
/// <include file='doc\XmlSchemaObjectTable.uex' path='docs/doc[@for="XmlSchemaObjectTable.this"]/*' />
public XmlSchemaObject this[XmlQualifiedName name] {
get {
XmlSchemaObject value;
if (table.TryGetValue(name, out value)) {
return value;
}
return null;
}
}
/// <include file='doc\XmlSchemaObjectTable.uex' path='docs/doc[@for="XmlSchemaObjectTable.Names"]/*' />
public ICollection Names {
get {
return new NamesCollection(entries, table.Count);
}
}
/// <include file='doc\XmlSchemaObjectTable.uex' path='docs/doc[@for="XmlSchemaObjectTable.Values"]/*' />
public ICollection Values {
get {
return new ValuesCollection(entries, table.Count);
}
}
/// <include file='doc\XmlSchemaObjectTable.uex' path='docs/doc[@for="XmlSchemaObjectTable.GetEnumerator"]/*' />
public IDictionaryEnumerator GetEnumerator() {
return new XSODictionaryEnumerator(this.entries, table.Count, EnumeratorType.DictionaryEntry);
}
internal enum EnumeratorType {
Keys,
Values,
DictionaryEntry,
}
internal struct XmlSchemaObjectEntry {
internal XmlQualifiedName qname;
internal XmlSchemaObject xso;
public XmlSchemaObjectEntry(XmlQualifiedName name, XmlSchemaObject value) {
qname = name;
xso = value;
}
public XmlSchemaObject IsMatch(string localName, string ns) {
if (localName == qname.Name && ns == qname.Namespace) {
return xso;
}
return null;
}
public void Reset() {
qname = null;
xso = null;
}
}
internal class NamesCollection : ICollection {
private List<XmlSchemaObjectEntry> entries;
int size;
internal NamesCollection(List<XmlSchemaObjectEntry> entries, int size) {
this.entries = entries;
this.size = size;
}
public int Count {
get { return size; }
}
public Object SyncRoot {
get {
return ((ICollection)entries).SyncRoot;
}
}
public bool IsSynchronized {
get {
return ((ICollection)entries).IsSynchronized;
}
}
public void CopyTo(Array array, int arrayIndex) {
if (array == null)
throw new ArgumentNullException("array");
if (arrayIndex < 0)
throw new ArgumentOutOfRangeException("arrayIndex");
Debug.Assert(array.Length >= size, "array is not big enough to hold all the items in the ICollection");
for (int i = 0; i < size; i++) {
array.SetValue(entries[i].qname, arrayIndex++);
}
}
public IEnumerator GetEnumerator() {
return new XSOEnumerator(this.entries, this.size, EnumeratorType.Keys);
}
}
//ICollection for Values
internal class ValuesCollection : ICollection {
private List<XmlSchemaObjectEntry> entries;
int size;
internal ValuesCollection(List<XmlSchemaObjectEntry> entries, int size) {
this.entries = entries;
this.size = size;
}
public int Count {
get { return size; }
}
public Object SyncRoot {
get {
return ((ICollection)entries).SyncRoot;
}
}
public bool IsSynchronized {
get {
return ((ICollection)entries).IsSynchronized;
}
}
public void CopyTo(Array array, int arrayIndex) {
if (array == null)
throw new ArgumentNullException("array");
if (arrayIndex < 0)
throw new ArgumentOutOfRangeException("arrayIndex");
Debug.Assert(array.Length >= size, "array is not big enough to hold all the items in the ICollection");
for (int i = 0; i < size; i++) {
array.SetValue(entries[i].xso, arrayIndex++);
}
}
public IEnumerator GetEnumerator() {
return new XSOEnumerator(this.entries, this.size, EnumeratorType.Values);
}
}
internal class XSOEnumerator : IEnumerator {
private List<XmlSchemaObjectEntry> entries;
private EnumeratorType enumType;
protected int currentIndex;
protected int size;
protected XmlQualifiedName currentKey;
protected XmlSchemaObject currentValue;
internal XSOEnumerator(List<XmlSchemaObjectEntry> entries, int size, EnumeratorType enumType) {
this.entries = entries;
this.size = size;
this.enumType = enumType;
currentIndex = -1;
}
public Object Current {
get {
if (currentIndex == -1) {
throw new InvalidOperationException(Res.GetString(Res.Sch_EnumNotStarted, string.Empty));
}
if (currentIndex >= size) {
throw new InvalidOperationException(Res.GetString(Res.Sch_EnumFinished, string.Empty));
}
switch(enumType) {
case EnumeratorType.Keys:
return currentKey;
case EnumeratorType.Values:
return currentValue;
case EnumeratorType.DictionaryEntry:
return new DictionaryEntry(currentKey, currentValue);
default:
break;
}
return null;
}
}
public bool MoveNext() {
if (currentIndex >= size - 1) {
currentValue = null;
currentKey = null;
return false;
}
currentIndex++;
currentValue = entries[currentIndex].xso;
currentKey = entries[currentIndex].qname;
return true;
}
public void Reset() {
currentIndex = -1;
currentValue = null;
currentKey = null;
}
}
internal class XSODictionaryEnumerator : XSOEnumerator, IDictionaryEnumerator {
internal XSODictionaryEnumerator(List<XmlSchemaObjectEntry> entries, int size, EnumeratorType enumType) : base(entries, size, enumType) {
}
//IDictionaryEnumerator members
public DictionaryEntry Entry {
get {
if (currentIndex == -1) {
throw new InvalidOperationException(Res.GetString(Res.Sch_EnumNotStarted, string.Empty));
}
if (currentIndex >= size) {
throw new InvalidOperationException(Res.GetString(Res.Sch_EnumFinished, string.Empty));
}
return new DictionaryEntry(currentKey, currentValue);
}
}
public object Key {
get {
if (currentIndex == -1) {
throw new InvalidOperationException(Res.GetString(Res.Sch_EnumNotStarted, string.Empty));
}
if (currentIndex >= size) {
throw new InvalidOperationException(Res.GetString(Res.Sch_EnumFinished, string.Empty));
}
return currentKey;
}
}
public object Value {
get {
if (currentIndex == -1) {
throw new InvalidOperationException(Res.GetString(Res.Sch_EnumNotStarted, string.Empty));
}
if (currentIndex >= size) {
throw new InvalidOperationException(Res.GetString(Res.Sch_EnumFinished, string.Empty));
}
return currentValue;
}
}
}
}
}
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