QilFunction.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / QIL / QilFunction.cs / 1305376 / QilFunction.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
// [....] 
//-----------------------------------------------------------------------------
using System; 
using System.Collections.Generic; 
using System.Diagnostics;
 
namespace System.Xml.Xsl.Qil {

    /// 
    /// An anonymous QilExpression function node. 
    /// 
    ///  
    /// Function is a block, so it may introduce assignments (scoped to the function body). 
    /// Additionally, it has an argument list, which will be assigned values
    /// when the function is invoked. 
    /// The XmlType property defines the expected return type of this function.
    /// Normally, this should be the same as its definition's types, so setting the function
    /// definition changes the function's types.  In some rare cases, a compiler may wish to
    /// override the types after setting the function's definition (for example, an XQuery 
    /// might define a function's return type to be wider than its definition would imply.)
    ///  
    internal class QilFunction : QilReference { 
        private QilNode arguments, definition, sideEffects;
 
        //-----------------------------------------------
        // Constructor
        //-----------------------------------------------
 
        /// 
        /// Construct a node 
        ///  
        public QilFunction(QilNodeType nodeType, QilNode arguments, QilNode definition, QilNode sideEffects, XmlQueryType resultType)
            : base(nodeType) { 
            this.arguments = arguments;
            this.definition = definition;
            this.sideEffects = sideEffects;
            this.xmlType = resultType; 
        }
 
 
        //-----------------------------------------------
        // IList methods -- override 
        //-----------------------------------------------

        public override int Count {
            get { return 3; } 
        }
 
        public override QilNode this[int index] { 
            get {
                switch (index) { 
                    case 0: return this.arguments;
                    case 1: return this.definition;
                    case 2: return this.sideEffects;
                    default: throw new IndexOutOfRangeException(); 
                }
            } 
            set { 
                switch (index) {
                    case 0: this.arguments = value; break; 
                    case 1: this.definition = value; break;
                    case 2: this.sideEffects = value; break;
                    default: throw new IndexOutOfRangeException();
                } 
            }
        } 
 

        //----------------------------------------------- 
        // QilFunction methods
        //-----------------------------------------------

        ///  
        /// Formal arguments of this function.
        ///  
        public QilList Arguments { 
            get { return (QilList) this.arguments; }
            set { this.arguments = value; } 
        }

        /// 
        /// Body of this function. 
        /// 
        public QilNode Definition { 
            get { return this.definition; } 
            set { this.definition = value; }
        } 

        /// 
        /// QilNodeType.True if this function might have side-effects.
        ///  
        public bool MaybeSideEffects {
            get { return this.sideEffects.NodeType == QilNodeType.True; } 
            set { this.sideEffects.NodeType = value ? QilNodeType.True : QilNodeType.False; } 
        }
    } 
}

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

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