Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / XsltOld / StateMachine.cs / 1305376 / StateMachine.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Xml.Xsl.XsltOld { using Res = System.Xml.Utils.Res; using System; using System.Diagnostics; using System.Xml; using System.Xml.XPath; internal class StateMachine { // Constants for the state table private const int Init = 0x000000; // Initial state private const int Elem = 0x000001; // Element was output private const int NsN = 0x000002; // Namespace name was output private const int NsV = 0x000003; // Namespace value was output (some more can follow) private const int Ns = 0x000004; // Namespace was output private const int AttrN = 0x000005; // Attribute name was output private const int AttrV = 0x000006; // Attribute value was output (some more can follow) private const int Attr = 0x000007; // Attribute was output private const int InElm = 0x000008; // Filling in element, general state text private const int EndEm = 0x000009; // After end element event - next end element doesn't generate token private const int InCmt = 0x00000a; // Adding text to a comment private const int InPI = 0x00000b; // Adding text to a processing instruction private const int StateMask = 0x00000F; // State mask internal const int Error = 0x000010; // Invalid XML state private const int Ignor = 0x000020; // Ignore this transition private const int Assrt = 0x000030; // Assrt private const int U = 0x000100; // Depth up private const int D = 0x000200; // Depth down internal const int DepthMask = 0x000300; // Depth mask internal const int DepthUp = U; internal const int DepthDown = D; private const int C = 0x000400; // BeginChild private const int H = 0x000800; // HadChild private const int M = 0x001000; // EmptyTag internal const int BeginChild = C; internal const int HadChild = H; internal const int EmptyTag = M; private const int B = 0x002000; // Begin Record private const int E = 0x004000; // Record finished internal const int BeginRecord = B; internal const int EndRecord = E; private const int S = 0x008000; // Push namespace scope private const int P = 0x010000; // Pop current namepsace scope internal const int PushScope = S; internal const int PopScope = P; // Next event must pop scope // // Runtime state // private int _State; internal StateMachine() { _State = Init; } internal int State { get { return _State; } set { // Hope you know what you are doing ... _State = value; } } internal void Reset() { _State = Init; } internal static int StateOnly(int state) { return state & StateMask; } internal int BeginOutlook(XPathNodeType nodeType) { int newState = s_BeginTransitions[(int)nodeType][_State]; Debug.Assert(newState != Assrt); return newState; } internal int Begin(XPathNodeType nodeType) { int newState = s_BeginTransitions[(int)nodeType][_State]; Debug.Assert(newState != Assrt); if (newState != Error && newState != Ignor) { _State = newState & StateMask; } return newState; } internal int EndOutlook(XPathNodeType nodeType) { int newState = s_EndTransitions[(int)nodeType][_State]; Debug.Assert(newState != Assrt); return newState; } internal int End(XPathNodeType nodeType) { int newState = s_EndTransitions[(int)nodeType][_State]; Debug.Assert(newState != Assrt); if (newState != Error && newState != Ignor) { _State = newState & StateMask; } return newState; } private static readonly int [][] s_BeginTransitions = { /* { Init, Elem, NsN, NsV, Ns, AttrN, AttrV, Attr, InElm, EndEm, InCmt, InPI }, */ /* Root */ new int[] { Error, Error, Error, Error, Error, Error, Error, Error, Error, Error, Error, Error }, /* Element */ new int[] { Elem |B|S, Elem |U|C|B|S, Error, Error, Elem |C|B|S, Error, Error, Elem |C|B|S, Elem |B|S, Elem |B|P|S, Error, Error }, /* Attribute */ new int[] { Error, AttrN|U, Error, Error, AttrN, Error, Error, AttrN, Error, Error, Error, Error }, /* Namespace */ new int[] { Error, NsN|U, Error, Error, NsN, Error, Error, Error, Error, Error, Error, Error }, /* Text */ new int[] { InElm|B, InElm|U|C|B, NsV|U, NsV, InElm|C|B, AttrV|U, AttrV, InElm|C|B, InElm, InElm|B|P, InCmt, InPI }, /* SignificantWhitespace */ new int[] { InElm|B, InElm|U|C|B, NsV|U, NsV, InElm|C|B, AttrV|U, AttrV, InElm|C|B, InElm, InElm|B|P, InCmt, InPI }, /* Whitespace */ new int[] { InElm|B, InElm|U|C|B, NsV|U, NsV, InElm|C|B, AttrV|U, AttrV, InElm|C|B, InElm, InElm|B|P, InCmt, InPI }, /* ProcessingInstruction */ new int[] { InPI |B, InPI |U|C|B, Error, Error, InPI |C|B, Error, Error, InPI |C|B, InPI |B, InPI |B|P, Error, Error }, /* Comment */ new int[] { InCmt|B, InCmt|U|C|B, Error, Error, InCmt|C|B, Error, Error, InCmt|C|B, InCmt|B, InCmt|B|P, Error, Error }, /* All */ new int[] { Error, Error, Error, Error, Error, Error, Error, Error, Error, Error, Error, Error }, }; private static readonly int [][] s_EndTransitions = { /* { Init, Elem, NsN, NsV, Ns, AttrN, AttrV, Attr, InElm, EndEm, InCmt, InPI }, */ /* Root */ new int[] { Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt }, /* Element */ new int[] { Assrt, EndEm|B|E|P|M, Assrt, Assrt, EndEm|D|B|E|P|M, Assrt, Assrt, EndEm|D|B|E|P|M, EndEm|D|H|B|E|P, EndEm|D|H|B|E|P, Assrt, Assrt }, /* Attribute */ new int[] { Assrt, Assrt, Assrt, Assrt, Assrt, Attr, Attr |D, Assrt, Assrt, Assrt, Assrt, Assrt }, /* Namespace */ new int[] { Assrt, Assrt, Ns, Ns |D, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt }, /* Text */ new int[] { Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt }, /* SignificantWhitespace */ new int[] { Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt }, /* Whitespace */ new int[] { Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt }, /* ProcessingInstruction */ new int[] { Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, EndEm|E}, /* Comment */ new int[] { Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, EndEm|E, Assrt }, /* All */ new int[] { Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt, Assrt }, }; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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