mcs/class/System.XML/System.Xml.Schema/XmlSchemaParticle.cs

   1 // Author: Dwivedi, Ajay kumar\r
   2 //            Adwiv@Yahoo.com\r
   3
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining
   6 // a copy of this software and associated documentation files (the
   7 // "Software"), to deal in the Software without restriction, including
   8 // without limitation the rights to use, copy, modify, merge, publish,
   9 // distribute, sublicense, and/or sell copies of the Software, and to
  10 // permit persons to whom the Software is furnished to do so, subject to
  11 // the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be
  14 // included in all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23 //
  24 using System;\r
  25 using System.Collections;\r
  26 using System.Globalization;
  27 using System.Xml.Serialization;\r
  28 \r
  29 namespace System.Xml.Schema\r
  30 {\r
  31         /// <summary>\r
  32         /// Summary description for XmlSchemaParticle.\r
  33         /// </summary>\r
  34         public abstract class XmlSchemaParticle : XmlSchemaAnnotated\r
  35         {\r
  36                 internal static XmlSchemaParticle Empty {\r
  37                         get {\r
  38                                 if (empty == null) {\r
  39                                         empty = new EmptyParticle ();\r
  40                                 }\r
  41                                 return empty;\r
  42                         }\r
  43                 }\r
  44 \r
  45                 decimal minOccurs, maxOccurs;\r
  46                 string  minstr, maxstr;\r
  47                 static XmlSchemaParticle empty;\r
  48                 decimal validatedMinOccurs = 1, validatedMaxOccurs = 1;\r
  49                 internal int recursionDepth = -1;\r
  50                 private decimal minEffectiveTotalRange = -1;\r
  51                 internal bool parentIsGroupDefinition;\r
  52 \r
  53                 protected XmlSchemaParticle()\r
  54                 {\r
  55                         minOccurs = decimal.One;\r
  56                         maxOccurs = decimal.One;\r
  57                 }\r
  58 \r
  59                 #region Attributes\r
  60 \r
  61                 [System.Xml.Serialization.XmlAttribute("minOccurs")]\r
  62                 public string MinOccursString\r
  63                 {\r
  64                         get{ return minstr; }\r
  65                         set\r
  66                         {\r
  67                                 if (value == null) {\r
  68                                         minOccurs = decimal.One;\r
  69                                         minstr = value;\r
  70                                         return;\r
  71                                 }\r
  72 \r
  73                                 decimal val = decimal.Parse (value, CultureInfo.InvariantCulture);\r
  74                                 if(val >= 0 && (val == Decimal.Truncate(val)))\r
  75                                 {\r
  76                                         minOccurs = val;\r
  77                                         minstr   = val.ToString (CultureInfo.InvariantCulture);\r
  78                                 }\r
  79                                 else\r
  80                                 {\r
  81                                         throw new XmlSchemaException\r
  82                                                 ("MinOccursString must be a non-negative number",null);                                         \r
  83                                 }\r
  84                         }\r
  85                 }\r
  86 \r
  87                 [System.Xml.Serialization.XmlAttribute("maxOccurs")]\r
  88                 public string MaxOccursString\r
  89                 {\r
  90                         get{ return maxstr; }\r
  91                         set\r
  92                         {\r
  93                                 if(value == "unbounded")\r
  94                                 {\r
  95                                         maxstr = value;\r
  96                                         maxOccurs = decimal.MaxValue;\r
  97                                 }\r
  98                                 else\r
  99                                 {\r
 100                                         decimal val = decimal.Parse (value, CultureInfo.InvariantCulture);\r
 101                                         if(val >= 0 && (val == Decimal.Truncate(val)))\r
 102                                         {\r
 103                                                 maxOccurs = val;\r
 104                                                 maxstr = val.ToString (CultureInfo.InvariantCulture);\r
 105                                         }\r
 106                                         else\r
 107                                         {\r
 108                                                 throw new XmlSchemaException\r
 109                                                         ("MaxOccurs must be a non-negative integer",null);\r
 110                                         }\r
 111                                         if (val == 0 && minstr == null)\r
 112                                                 minOccurs = 0;\r
 113                                 }\r
 114                         }\r
 115                 }\r
 116 \r
 117                 #endregion\r
 118 \r
 119                 #region XmlIgnore\r
 120 \r
 121                 [XmlIgnore]\r
 122                 public decimal MinOccurs\r
 123                 {\r
 124                         get{ return  minOccurs; }\r
 125                         set\r
 126                         {\r
 127                                 MinOccursString = value.ToString (CultureInfo.InvariantCulture);\r
 128                         }\r
 129                 }\r
 130 \r
 131                 [XmlIgnore]\r
 132                 public decimal MaxOccurs \r
 133                 {\r
 134                         get{ return  maxOccurs; } \r
 135                         set\r
 136                         {
 137                                 if (value == decimal.MaxValue)
 138                                         MaxOccursString = "unbounded";\r
 139                                 else\r
 140                                         MaxOccursString = value.ToString (CultureInfo.InvariantCulture);\r
 141                         }\r
 142                 }\r
 143 \r
 144                 internal decimal ValidatedMinOccurs\r
 145                 {\r
 146                         get { return validatedMinOccurs; }\r
 147                 }\r
 148 \r
 149                 internal decimal ValidatedMaxOccurs\r
 150                 {\r
 151                         get { return validatedMaxOccurs; }\r
 152 //                      set { validatedMaxOccurs = value; }\r
 153                 }\r
 154                 #endregion\r
 155 \r
 156                 internal XmlSchemaParticle OptimizedParticle;\r
 157 \r
 158                 internal abstract XmlSchemaParticle GetOptimizedParticle (bool isTop);\r
 159 \r
 160                 internal XmlSchemaParticle GetShallowClone ()\r
 161                 {\r
 162                         return (XmlSchemaParticle) MemberwiseClone ();\r
 163                 }\r
 164 \r
 165                 internal void CompileOccurence (ValidationEventHandler h, XmlSchema schema)\r
 166                 {\r
 167                         if (MinOccurs > MaxOccurs && !(MaxOccurs == 0 && MinOccursString == null))\r
 168                                 error(h,"minOccurs must be less than or equal to maxOccurs");\r
 169                         else {\r
 170                                 if (MaxOccursString == "unbounded")\r
 171                                         this.validatedMaxOccurs = decimal.MaxValue;\r
 172                                 else\r
 173                                         this.validatedMaxOccurs = maxOccurs;\r
 174                                 if (this.validatedMaxOccurs == 0)\r
 175                                         this.validatedMinOccurs = 0;\r
 176                                 else\r
 177                                         this.validatedMinOccurs = minOccurs;\r
 178                         }\r
 179                 }\r
 180 \r
 181                 internal override void CopyInfo (XmlSchemaParticle obj)\r
 182                 {\r
 183                         base.CopyInfo (obj);\r
 184                         if (MaxOccursString == "unbounded")\r
 185                                 obj.maxOccurs = obj.validatedMaxOccurs = decimal.MaxValue;\r
 186                         else \r
 187                                 obj.maxOccurs = obj.validatedMaxOccurs = this.ValidatedMaxOccurs;\r
 188                         if (MaxOccurs == 0)\r
 189                                 obj.minOccurs = obj.validatedMinOccurs = 0;\r
 190                         else\r
 191                                 obj.minOccurs = obj.validatedMinOccurs = this.ValidatedMinOccurs;\r
 192                         if (MinOccursString != null)\r
 193                                 obj.MinOccursString = MinOccursString;\r
 194                         if (MaxOccursString != null)\r
 195                                 obj.MaxOccursString = MaxOccursString;\r
 196                 }\r
 197 \r
 198                 internal virtual bool ValidateOccurenceRangeOK (XmlSchemaParticle other,\r
 199                         ValidationEventHandler h, XmlSchema schema, bool raiseError)\r
 200                 {\r
 201                         if ((this.ValidatedMinOccurs < other.ValidatedMinOccurs) ||\r
 202                                 (other.ValidatedMaxOccurs != decimal.MaxValue &&\r
 203                                 this.ValidatedMaxOccurs > other.ValidatedMaxOccurs)) {\r
 204                                 if (raiseError)\r
 205                                         error (h, "Invalid derivation occurence range was found.");\r
 206                                 return false;\r
 207                         }\r
 208                         return true;\r
 209                 }\r
 210 \r
 211                 internal virtual decimal GetMinEffectiveTotalRange ()\r
 212                 {\r
 213                         return ValidatedMinOccurs;\r
 214                 }\r
 215 \r
 216                 internal decimal GetMinEffectiveTotalRangeAllAndSequence ()\r
 217                 {\r
 218                         if (minEffectiveTotalRange >= 0)\r
 219                                 return minEffectiveTotalRange;\r
 220 \r
 221                         decimal product = 0; //this.ValidatedMinOccurs;\r
 222                         XmlSchemaObjectCollection col = null;\r
 223                         if (this is XmlSchemaAll)\r
 224                                 col = ((XmlSchemaAll) this).Items;\r
 225                         else\r
 226                                 col = ((XmlSchemaSequence) this).Items;\r
 227                         foreach (XmlSchemaParticle p in col)\r
 228                                 product += p.GetMinEffectiveTotalRange ();\r
 229 \r
 230                         minEffectiveTotalRange = product;\r
 231                         return product;\r
 232                 }\r
 233 \r
 234                 // 3.9.6 Particle Emptiable\r
 235                 internal virtual bool ValidateIsEmptiable ()\r
 236                 {\r
 237                         return this.validatedMinOccurs == 0 || this.GetMinEffectiveTotalRange () == 0;\r
 238                 }\r
 239 \r
 240                 internal abstract bool ValidateDerivationByRestriction (XmlSchemaParticle baseParticle,\r
 241                         ValidationEventHandler h, XmlSchema schema, bool raiseError);\r
 242 \r
 243                 internal abstract void ValidateUniqueParticleAttribution (\r
 244                         XmlSchemaObjectTable qnames, ArrayList nsNames,\r
 245                         ValidationEventHandler h, XmlSchema schema);\r
 246 \r
 247                 internal abstract void ValidateUniqueTypeAttribution (XmlSchemaObjectTable labels,\r
 248                         ValidationEventHandler h, XmlSchema schema);\r
 249 \r
 250                 // See http://www.thaiopensource.com/relaxng/simplify.html\r
 251                 internal abstract void CheckRecursion (int depth, ValidationEventHandler h, XmlSchema schema);\r
 252 \r
 253                 internal abstract bool ParticleEquals (XmlSchemaParticle other);\r
 254 \r
 255                 #region Internal Class\r
 256                 internal class EmptyParticle : XmlSchemaParticle\r
 257                 {\r
 258                         internal EmptyParticle ()\r
 259                         {\r
 260                         }\r
 261 \r
 262                         internal override XmlSchemaParticle GetOptimizedParticle (bool isTop)\r
 263                         {\r
 264                                 return this;\r
 265                         }\r
 266 \r
 267                         internal override bool ParticleEquals (XmlSchemaParticle other)\r
 268                         {\r
 269                                 return other == this || other == XmlSchemaParticle.Empty;\r
 270                         }\r
 271 \r
 272                         internal override bool ValidateDerivationByRestriction (XmlSchemaParticle baseParticle,\r
 273                                 ValidationEventHandler h, XmlSchema schema, bool raiseError)\r
 274                         {\r
 275                                 return true;\r
 276                         }\r
 277 \r
 278                         internal override void CheckRecursion (int depth, \r
 279                                 ValidationEventHandler h, XmlSchema schema)\r
 280                         {\r
 281                                 // do nothing\r
 282                         }\r
 283 \r
 284                         internal override void ValidateUniqueParticleAttribution (XmlSchemaObjectTable qnames,\r
 285                                 ArrayList nsNames, ValidationEventHandler h, XmlSchema schema)\r
 286                         {\r
 287                                 // do nothing\r
 288                         }\r
 289 \r
 290                         internal override void ValidateUniqueTypeAttribution (XmlSchemaObjectTable labels,\r
 291                                 ValidationEventHandler h, XmlSchema schema)\r
 292                         {\r
 293                                 // do nothing\r
 294                         }\r
 295 \r
 296                 }\r
 297                 #endregion\r
 298         }\r
 299 }