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//------------------------------------------------------------------------------
// <copyright file="XmlQueryStaticData.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
// <owner current="true" primary="true">Microsoft</owner>
//------------------------------------------------------------------------------
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Xml.Xsl.IlGen;
using System.Xml.Xsl.Qil;
namespace System.Xml.Xsl.Runtime {
/// <summary>
/// Contains all static data that is used by the runtime.
/// </summary>
internal class XmlQueryStaticData {
// Name of the field to serialize to
public const string DataFieldName = "staticData";
public const string TypesFieldName = "ebTypes";
// Format version marker to support versioning: (major << 8) | minor
private const int CurrentFormatVersion = (0 << 8) | 0;
private XmlWriterSettings defaultWriterSettings;
private IList<WhitespaceRule> whitespaceRules;
private string[] names;
private StringPair[][] prefixMappingsList;
private Int32Pair[] filters;
private XmlQueryType[] types;
private XmlCollation[] collations;
private string[] globalNames;
private EarlyBoundInfo[] earlyBound;
/// <summary>
/// Constructor.
/// </summary>
public XmlQueryStaticData(XmlWriterSettings defaultWriterSettings, IList<WhitespaceRule> whitespaceRules, StaticDataManager staticData) {
Debug.Assert(defaultWriterSettings != null && staticData != null);
this.defaultWriterSettings = defaultWriterSettings;
this.whitespaceRules = whitespaceRules;
this.names = staticData.Names;
this.prefixMappingsList = staticData.PrefixMappingsList;
this.filters = staticData.NameFilters;
this.types = staticData.XmlTypes;
this.collations = staticData.Collations;
this.globalNames = staticData.GlobalNames;
this.earlyBound = staticData.EarlyBound;
#if DEBUG
// Round-trip check
byte[] data;
Type[] ebTypes;
this.GetObjectData(out data, out ebTypes);
XmlQueryStaticData copy = new XmlQueryStaticData(data, ebTypes);
this.defaultWriterSettings = copy.defaultWriterSettings;
this.whitespaceRules = copy.whitespaceRules;
this.names = copy.names;
this.prefixMappingsList = copy.prefixMappingsList;
this.filters = copy.filters;
this.types = copy.types;
this.collations = copy.collations;
this.globalNames = copy.globalNames;
this.earlyBound = copy.earlyBound;
#endif
}
/// <summary>
/// Deserialize XmlQueryStaticData object from a byte array.
/// </summary>
public XmlQueryStaticData(byte[] data, Type[] ebTypes) {
MemoryStream dataStream = new MemoryStream(data, /*writable:*/false);
XmlQueryDataReader dataReader = new XmlQueryDataReader(dataStream);
int length;
// Read a format version
int formatVersion = dataReader.ReadInt32Encoded();
// Changes in the major part of version are not supported
if ((formatVersion & ~0xff) > CurrentFormatVersion)
throw new NotSupportedException();
// XmlWriterSettings defaultWriterSettings;
defaultWriterSettings = new XmlWriterSettings(dataReader);
// IList<WhitespaceRule> whitespaceRules;
length = dataReader.ReadInt32();
if (length != 0) {
this.whitespaceRules = new WhitespaceRule[length];
for (int idx = 0; idx < length; idx++) {
this.whitespaceRules[idx] = new WhitespaceRule(dataReader);
}
}
// string[] names;
length = dataReader.ReadInt32();
if (length != 0) {
this.names = new string[length];
for (int idx = 0; idx < length; idx++) {
this.names[idx] = dataReader.ReadString();
}
}
// StringPair[][] prefixMappingsList;
length = dataReader.ReadInt32();
if (length != 0) {
this.prefixMappingsList = new StringPair[length][];
for (int idx = 0; idx < length; idx++) {
int length2 = dataReader.ReadInt32();
this.prefixMappingsList[idx] = new StringPair[length2];
for (int idx2 = 0; idx2 < length2; idx2++) {
this.prefixMappingsList[idx][idx2] = new StringPair(dataReader.ReadString(), dataReader.ReadString());
}
}
}
// Int32Pair[] filters;
length = dataReader.ReadInt32();
if (length != 0) {
this.filters = new Int32Pair[length];
for (int idx = 0; idx < length; idx++) {
this.filters[idx] = new Int32Pair(dataReader.ReadInt32Encoded(), dataReader.ReadInt32Encoded());
}
}
// XmlQueryType[] types;
length = dataReader.ReadInt32();
if (length != 0) {
this.types = new XmlQueryType[length];
for (int idx = 0; idx < length; idx++) {
this.types[idx] = XmlQueryTypeFactory.Deserialize(dataReader);
}
}
// XmlCollation[] collations;
length = dataReader.ReadInt32();
if (length != 0) {
this.collations = new XmlCollation[length];
for (int idx = 0; idx < length; idx++) {
this.collations[idx] = new XmlCollation(dataReader);
}
}
// string[] globalNames;
length = dataReader.ReadInt32();
if (length != 0) {
this.globalNames = new string[length];
for (int idx = 0; idx < length; idx++) {
this.globalNames[idx] = dataReader.ReadString();
}
}
// EarlyBoundInfo[] earlyBound;
length = dataReader.ReadInt32();
if (length != 0) {
this.earlyBound = new EarlyBoundInfo[length];
for (int idx = 0; idx < length; idx++) {
this.earlyBound[idx] = new EarlyBoundInfo(dataReader.ReadString(), ebTypes[idx]);
}
}
Debug.Assert(formatVersion != CurrentFormatVersion || dataReader.Read() == -1, "Extra data at the end of the stream");
dataReader.Close();
}
/// <summary>
/// Serialize XmlQueryStaticData object into a byte array.
/// </summary>
public void GetObjectData(out byte[] data, out Type[] ebTypes) {
MemoryStream dataStream = new MemoryStream(4096);
XmlQueryDataWriter dataWriter = new XmlQueryDataWriter(dataStream);
// First put the format version
dataWriter.WriteInt32Encoded(CurrentFormatVersion);
// XmlWriterSettings defaultWriterSettings;
defaultWriterSettings.GetObjectData(dataWriter);
// IList<WhitespaceRule> whitespaceRules;
if (this.whitespaceRules == null) {
dataWriter.Write(0);
}
else {
dataWriter.Write(this.whitespaceRules.Count);
foreach (WhitespaceRule rule in this.whitespaceRules) {
rule.GetObjectData(dataWriter);
}
}
// string[] names;
if (this.names == null) {
dataWriter.Write(0);
}
else {
dataWriter.Write(this.names.Length);
foreach (string name in this.names) {
dataWriter.Write(name);
}
}
// StringPair[][] prefixMappingsList;
if (this.prefixMappingsList == null) {
dataWriter.Write(0);
}
else {
dataWriter.Write(this.prefixMappingsList.Length);
foreach (StringPair[] mappings in this.prefixMappingsList) {
dataWriter.Write(mappings.Length);
foreach (StringPair mapping in mappings) {
dataWriter.Write(mapping.Left);
dataWriter.Write(mapping.Right);
}
}
}
// Int32Pair[] filters;
if (this.filters == null) {
dataWriter.Write(0);
}
else {
dataWriter.Write(this.filters.Length);
foreach (Int32Pair filter in this.filters) {
dataWriter.WriteInt32Encoded(filter.Left);
dataWriter.WriteInt32Encoded(filter.Right);
}
}
// XmlQueryType[] types;
if (this.types == null) {
dataWriter.Write(0);
}
else {
dataWriter.Write(this.types.Length);
foreach (XmlQueryType type in this.types) {
XmlQueryTypeFactory.Serialize(dataWriter, type);
}
}
// XmlCollation[] collations;
if (collations == null) {
dataWriter.Write(0);
}
else {
dataWriter.Write(this.collations.Length);
foreach (XmlCollation collation in this.collations) {
collation.GetObjectData(dataWriter);
}
}
// string[] globalNames;
if (this.globalNames == null) {
dataWriter.Write(0);
}
else {
dataWriter.Write(this.globalNames.Length);
foreach (string name in this.globalNames) {
dataWriter.Write(name);
}
}
// EarlyBoundInfo[] earlyBound;
if (this.earlyBound == null) {
dataWriter.Write(0);
ebTypes = null;
}
else {
dataWriter.Write(this.earlyBound.Length);
ebTypes = new Type[this.earlyBound.Length];
int idx = 0;
foreach (EarlyBoundInfo info in this.earlyBound) {
dataWriter.Write(info.NamespaceUri);
ebTypes[idx++] = info.EarlyBoundType;
}
}
dataWriter.Close();
data = dataStream.ToArray();
}
/// <summary>
/// Return the default writer settings.
/// </summary>
public XmlWriterSettings DefaultWriterSettings {
get { return this.defaultWriterSettings; }
}
/// <summary>
/// Return the rules used for whitespace stripping/preservation.
/// </summary>
public IList<WhitespaceRule> WhitespaceRules {
get { return this.whitespaceRules; }
}
/// <summary>
/// Return array of names used by this query.
/// </summary>
public string[] Names {
get { return this.names; }
}
/// <summary>
/// Return array of prefix mappings used by this query.
/// </summary>
public StringPair[][] PrefixMappingsList {
get { return this.prefixMappingsList; }
}
/// <summary>
/// Return array of name filter specifications used by this query.
/// </summary>
public Int32Pair[] Filters {
get { return this.filters; }
}
/// <summary>
/// Return array of types used by this query.
/// </summary>
public XmlQueryType[] Types {
get { return this.types; }
}
/// <summary>
/// Return array of collations used by this query.
/// </summary>
public XmlCollation[] Collations {
get { return this.collations; }
}
/// <summary>
/// Return names of all global variables and parameters used by this query.
/// </summary>
public string[] GlobalNames {
get { return this.globalNames; }
}
/// <summary>
/// Return array of early bound object information related to this query.
/// </summary>
public EarlyBoundInfo[] EarlyBound {
get { return this.earlyBound; }
}
}
/// <summary>
/// Subclass of BinaryReader used to serialize query static data.
/// </summary>
internal class XmlQueryDataReader : BinaryReader {
public XmlQueryDataReader(Stream input) : base(input) { }
/// <summary>
/// Read in a 32-bit integer in compressed format.
/// </summary>
public int ReadInt32Encoded() {
return Read7BitEncodedInt();
}
/// <summary>
/// Read a string value from the stream. Value can be null.
/// </summary>
public string ReadStringQ() {
return ReadBoolean() ? ReadString() : null;
}
/// <summary>
/// Read a signed byte value from the stream and check if it belongs to the given diapason.
/// </summary>
public sbyte ReadSByte(sbyte minValue, sbyte maxValue) {
sbyte value = ReadSByte();
if (value < minValue)
throw new ArgumentOutOfRangeException("minValue");
if (maxValue < value)
throw new ArgumentOutOfRangeException("maxValue");
return value;
}
}
/// <summary>
/// Subclass of BinaryWriter used to deserialize query static data.
/// </summary>
internal class XmlQueryDataWriter : BinaryWriter {
public XmlQueryDataWriter(Stream output) : base(output) { }
/// <summary>
/// Write a 32-bit integer in a compressed format.
/// </summary>
public void WriteInt32Encoded(int value) {
Write7BitEncodedInt(value);
}
/// <summary>
/// Write a string value to the stream. Value can be null.
/// </summary>
public void WriteStringQ(string value) {
Write(value != null);
if (value != null) {
Write(value);
}
}
}
}
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