Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Workflow.Activities/Rules/References.cs

@@ -0,0 +1,89 @@
+// ---------------------------------------------------------------------------
+// Copyright (C) 2005 Microsoft Corporation All Rights Reserved
+// ---------------------------------------------------------------------------
+
+#define CODE_ANALYSIS
+using System.CodeDom;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Reflection;
+
+namespace System.Workflow.Activities.Rules
+{
+    public class RulePathQualifier
+    {
+        private string name;
+        private RulePathQualifier next;
+
+        public RulePathQualifier(string name, RulePathQualifier next)
+        {
+            this.name = name;
+            this.next = next;
+        }
+
+        public string Name
+        {
+            get { return name; }
+        }
+
+        public RulePathQualifier Next
+        {
+            get { return next; }
+        }
+    }
+
+    public class RuleAnalysis
+    {
+        private RuleValidation validation;
+        private bool forWrites;
+        private Dictionary<string, object> symbols = new Dictionary<string, object>();
+
+        public RuleAnalysis(RuleValidation validation, bool forWrites)
+        {
+            this.validation = validation;
+            this.forWrites = forWrites;
+        }
+
+        internal RuleValidation Validation
+        {
+            get { return validation; }
+        }
+
+        public bool ForWrites
+        {
+            get { return forWrites; }
+        }
+
+        public void AddSymbol(string symbol)
+        {
+            symbols[symbol] = null;
+        }
+
+
+        [SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate")]
+        public ICollection<string> GetSymbols()
+        {
+            List<string> symbolList = new List<string>(symbols.Keys.Count);
+
+            foreach (KeyValuePair<string, object> pair in symbols)
+                symbolList.Add(pair.Key);
+
+            return symbolList;
+        }
+
+        #region RuleAttribute Analysis
+
+        internal void AnalyzeRuleAttributes(MemberInfo member, CodeExpression targetExpr, RulePathQualifier targetQualifier, CodeExpressionCollection argExprs, ParameterInfo[] parameters, List<CodeExpression> attributedExprs)
+        {
+            object[] attrs = member.GetCustomAttributes(typeof(RuleAttribute), true);
+            if (attrs != null && attrs.Length > 0)
+            {
+                RuleAttribute[] ruleAttrs = (RuleAttribute[])attrs;
+                for (int i = 0; i < ruleAttrs.Length; ++i)
+                    ruleAttrs[i].Analyze(this, member, targetExpr, targetQualifier, argExprs, parameters, attributedExprs);
+            }
+        }
+
+        #endregion
+    }
+}