WhitespaceRuleLookup.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / XmlUtils / System / Xml / Xsl / Runtime / WhitespaceRuleLookup.cs / 1 / WhitespaceRuleLookup.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
using System; 
using System.Xml; 
using System.Collections;
using System.Collections.Generic; 
using System.Diagnostics;
using MS.Internal.Xml;
using System.Xml.Xsl.Qil;
 
namespace System.Xml.Xsl.Runtime {
 
    ///  
    /// This class keeps a list of whitespace rules in order to determine whether whitespace children of particular
    /// elements should be stripped. 
    /// 
    internal class WhitespaceRuleLookup {
        private Hashtable qnames;
        private ArrayList wildcards; 
        private InternalWhitespaceRule ruleTemp;
        private XmlNameTable nameTable; 
 
        public WhitespaceRuleLookup() {
            this.qnames = new Hashtable(); 
            this.wildcards = new ArrayList();
        }

        ///  
        /// Create a new lookup internal class from the specified WhitespaceRules.  Use the name table to atomize all
        /// names for fast comparison. 
        ///  
        public WhitespaceRuleLookup(IList rules) : this() {
            WhitespaceRule rule; 
            InternalWhitespaceRule ruleInternal;
            Debug.Assert(rules != null);

            for (int i = rules.Count - 1; i >= 0; i--) { 
                // Make a copy of each rule, but atomize each name
                rule = rules[i]; 
                ruleInternal = new InternalWhitespaceRule(rule.LocalName, rule.NamespaceName, rule.PreserveSpace, -i); 

                if (rule.LocalName == null || rule.NamespaceName == null) { 
                    // Wildcard, so add to wildcards array
                    this.wildcards.Add(ruleInternal);
                }
                else { 
                    // Exact name, so add to hashtable
                    this.qnames[ruleInternal] = ruleInternal; 
                } 
            }
 
            // Create a temporary (not thread-safe) InternalWhitespaceRule used for lookups
            this.ruleTemp = new InternalWhitespaceRule();
        }
 
        /// 
        /// Atomize all names contained within the whitespace rules with respect to "nameTable". 
        ///  
        public void Atomize(XmlNameTable nameTable) {
            // If names are already atomized with respect to "nameTable", no need to do it again 
            if (nameTable != this.nameTable) {
                this.nameTable = nameTable;

                foreach (InternalWhitespaceRule rule in this.qnames.Values) 
                    rule.Atomize(nameTable);
 
                foreach (InternalWhitespaceRule rule in this.wildcards) 
                    rule.Atomize(nameTable);
            } 
        }

        /// 
        /// Return true if elements of the specified name should have whitespace children stripped. 
        /// NOTE: This method is not thread-safe.  Different threads should create their own copy of the
        /// WhitespaceRuleLookup object.  This allows all names to be atomized according to a private NameTable. 
        ///  
        public bool ShouldStripSpace(string localName, string namespaceName) {
            InternalWhitespaceRule qnameRule, wildcardRule; 
            Debug.Assert(this.nameTable != null && this.ruleTemp != null);
            Debug.Assert(localName != null && (object) this.nameTable.Get(localName) == (object) localName);
            Debug.Assert(namespaceName != null && (object) this.nameTable.Get(namespaceName) == (object) namespaceName);
 
            this.ruleTemp.Init(localName, namespaceName, false, 0);
 
            // Lookup name in qnames table 
            // If found, the name will be stripped unless there is a preserve wildcard with higher priority
            qnameRule = this.qnames[this.ruleTemp] as InternalWhitespaceRule; 

            for (int pos = this.wildcards.Count; pos-- != 0;) {
                wildcardRule = this.wildcards[pos] as InternalWhitespaceRule;
 
                if (qnameRule != null) {
                    // If qname priority is greater than any subsequent wildcard's priority, then we're done 
                    if (qnameRule.Priority > wildcardRule.Priority) 
                        return !qnameRule.PreserveSpace;
 
                    // Don't bother to consider wildcards with the same PreserveSpace flag
                    if (qnameRule.PreserveSpace == wildcardRule.PreserveSpace)
                        continue;
                } 

                if (wildcardRule.LocalName == null || (object) wildcardRule.LocalName == (object) localName) { 
                    if (wildcardRule.NamespaceName == null || (object) wildcardRule.NamespaceName == (object) namespaceName) { 
                        // Found wildcard match, so we're done (since wildcards are in priority order)
                        return !wildcardRule.PreserveSpace; 
                    }
                }
            }
 
            return (qnameRule != null && !qnameRule.PreserveSpace);
        } 
 
        private class InternalWhitespaceRule : WhitespaceRule {
            private int priority;       // Relative priority of this test 
            private int hashCode;       // Cached hashcode

            public InternalWhitespaceRule() {
            } 

            public InternalWhitespaceRule(string localName, string namespaceName, bool preserveSpace, int priority) { 
                Init(localName, namespaceName, preserveSpace, priority); 
            }
 
            public void Init(string localName, string namespaceName, bool preserveSpace, int priority) {
                base.Init(localName, namespaceName, preserveSpace);
                this.priority = priority;
 
                if (localName != null && namespaceName != null) {
                    this.hashCode = localName.GetHashCode(); 
                } 
            }
 
            public void Atomize(XmlNameTable nameTable) {
                if (LocalName != null)
                    LocalName = nameTable.Add(LocalName);
 
                if (NamespaceName != null)
                    NamespaceName = nameTable.Add(NamespaceName); 
            } 

            public int Priority { 
                get { return this.priority; }
            }

            public override int GetHashCode() { 
                return this.hashCode;
            } 
 
            public override bool Equals(object obj) {
                Debug.Assert(obj is InternalWhitespaceRule); 
                InternalWhitespaceRule that = obj as InternalWhitespaceRule;

                Debug.Assert(LocalName != null && that.LocalName != null);
                Debug.Assert(NamespaceName != null && that.NamespaceName != null); 
                return (object) LocalName == (object) LocalName && (object) NamespaceName == (object) that.NamespaceName;
            } 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
using System; 
using System.Xml; 
using System.Collections;
using System.Collections.Generic; 
using System.Diagnostics;
using MS.Internal.Xml;
using System.Xml.Xsl.Qil;
 
namespace System.Xml.Xsl.Runtime {
 
    ///  
    /// This class keeps a list of whitespace rules in order to determine whether whitespace children of particular
    /// elements should be stripped. 
    /// 
    internal class WhitespaceRuleLookup {
        private Hashtable qnames;
        private ArrayList wildcards; 
        private InternalWhitespaceRule ruleTemp;
        private XmlNameTable nameTable; 
 
        public WhitespaceRuleLookup() {
            this.qnames = new Hashtable(); 
            this.wildcards = new ArrayList();
        }

        ///  
        /// Create a new lookup internal class from the specified WhitespaceRules.  Use the name table to atomize all
        /// names for fast comparison. 
        ///  
        public WhitespaceRuleLookup(IList rules) : this() {
            WhitespaceRule rule; 
            InternalWhitespaceRule ruleInternal;
            Debug.Assert(rules != null);

            for (int i = rules.Count - 1; i >= 0; i--) { 
                // Make a copy of each rule, but atomize each name
                rule = rules[i]; 
                ruleInternal = new InternalWhitespaceRule(rule.LocalName, rule.NamespaceName, rule.PreserveSpace, -i); 

                if (rule.LocalName == null || rule.NamespaceName == null) { 
                    // Wildcard, so add to wildcards array
                    this.wildcards.Add(ruleInternal);
                }
                else { 
                    // Exact name, so add to hashtable
                    this.qnames[ruleInternal] = ruleInternal; 
                } 
            }
 
            // Create a temporary (not thread-safe) InternalWhitespaceRule used for lookups
            this.ruleTemp = new InternalWhitespaceRule();
        }
 
        /// 
        /// Atomize all names contained within the whitespace rules with respect to "nameTable". 
        ///  
        public void Atomize(XmlNameTable nameTable) {
            // If names are already atomized with respect to "nameTable", no need to do it again 
            if (nameTable != this.nameTable) {
                this.nameTable = nameTable;

                foreach (InternalWhitespaceRule rule in this.qnames.Values) 
                    rule.Atomize(nameTable);
 
                foreach (InternalWhitespaceRule rule in this.wildcards) 
                    rule.Atomize(nameTable);
            } 
        }

        /// 
        /// Return true if elements of the specified name should have whitespace children stripped. 
        /// NOTE: This method is not thread-safe.  Different threads should create their own copy of the
        /// WhitespaceRuleLookup object.  This allows all names to be atomized according to a private NameTable. 
        ///  
        public bool ShouldStripSpace(string localName, string namespaceName) {
            InternalWhitespaceRule qnameRule, wildcardRule; 
            Debug.Assert(this.nameTable != null && this.ruleTemp != null);
            Debug.Assert(localName != null && (object) this.nameTable.Get(localName) == (object) localName);
            Debug.Assert(namespaceName != null && (object) this.nameTable.Get(namespaceName) == (object) namespaceName);
 
            this.ruleTemp.Init(localName, namespaceName, false, 0);
 
            // Lookup name in qnames table 
            // If found, the name will be stripped unless there is a preserve wildcard with higher priority
            qnameRule = this.qnames[this.ruleTemp] as InternalWhitespaceRule; 

            for (int pos = this.wildcards.Count; pos-- != 0;) {
                wildcardRule = this.wildcards[pos] as InternalWhitespaceRule;
 
                if (qnameRule != null) {
                    // If qname priority is greater than any subsequent wildcard's priority, then we're done 
                    if (qnameRule.Priority > wildcardRule.Priority) 
                        return !qnameRule.PreserveSpace;
 
                    // Don't bother to consider wildcards with the same PreserveSpace flag
                    if (qnameRule.PreserveSpace == wildcardRule.PreserveSpace)
                        continue;
                } 

                if (wildcardRule.LocalName == null || (object) wildcardRule.LocalName == (object) localName) { 
                    if (wildcardRule.NamespaceName == null || (object) wildcardRule.NamespaceName == (object) namespaceName) { 
                        // Found wildcard match, so we're done (since wildcards are in priority order)
                        return !wildcardRule.PreserveSpace; 
                    }
                }
            }
 
            return (qnameRule != null && !qnameRule.PreserveSpace);
        } 
 
        private class InternalWhitespaceRule : WhitespaceRule {
            private int priority;       // Relative priority of this test 
            private int hashCode;       // Cached hashcode

            public InternalWhitespaceRule() {
            } 

            public InternalWhitespaceRule(string localName, string namespaceName, bool preserveSpace, int priority) { 
                Init(localName, namespaceName, preserveSpace, priority); 
            }
 
            public void Init(string localName, string namespaceName, bool preserveSpace, int priority) {
                base.Init(localName, namespaceName, preserveSpace);
                this.priority = priority;
 
                if (localName != null && namespaceName != null) {
                    this.hashCode = localName.GetHashCode(); 
                } 
            }
 
            public void Atomize(XmlNameTable nameTable) {
                if (LocalName != null)
                    LocalName = nameTable.Add(LocalName);
 
                if (NamespaceName != null)
                    NamespaceName = nameTable.Add(NamespaceName); 
            } 

            public int Priority { 
                get { return this.priority; }
            }

            public override int GetHashCode() { 
                return this.hashCode;
            } 
 
            public override bool Equals(object obj) {
                Debug.Assert(obj is InternalWhitespaceRule); 
                InternalWhitespaceRule that = obj as InternalWhitespaceRule;

                Debug.Assert(LocalName != null && that.LocalName != null);
                Debug.Assert(NamespaceName != null && that.NamespaceName != null); 
                return (object) LocalName == (object) LocalName && (object) NamespaceName == (object) that.NamespaceName;
            } 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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