State.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 / cdf / src / NetFx40 / System.Activities / System / Activities / Debugger / State.cs / 1305376 / State.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

namespace System.Activities.Debugger 
{
    using System; 
    using System.Collections.Generic; 
    using System.Diagnostics;
    using System.Reflection; 
    using System.Runtime;
    using System.Diagnostics.CodeAnalysis;

    // Describes a "state" in the interpretter. A state is any source location that 
    // a breakpoint could be set on or that could be stepped to.
    [DebuggerNonUserCode] 
    [Fx.Tag.XamlVisible(false)] 
    public class State
    { 
        SourceLocation location;
        string name;
        IEnumerable earlyLocals;
        int numberOfEarlyLocals; 

        // Calling Type.GetMethod() is slow (10,000 calls can take ~1 minute). 
        // So we stash extra fields to be able to make the call lazily (as we Enter the state). 
        // this.type.GetMethod
        Type type; 
        string methodName;

        internal State(SourceLocation location, string name, IEnumerable earlyLocals, int numberOfEarlyLocals)
        { 
            this.location = location;
            this.name = name; 
            this.earlyLocals = earlyLocals; 
            Fx.Assert(earlyLocals != null || numberOfEarlyLocals == 0,
                "If earlyLocals is null then numberOfEarlyLocals should be 0"); 
            // Ignore the passed numberOfEarlyLocals if earlyLocal is null.
            this.numberOfEarlyLocals = (earlyLocals == null) ? 0 : numberOfEarlyLocals;
        }
 
        // Location in source file associated with this state.
        internal SourceLocation Location 
        { 
            get { return this.location; }
        } 


        // Friendly name of the state. May be null if state is not named.
        // States need unique names. 
        internal string Name
        { 
            get { return this.name; } 
        }
 

        // Type definitions for early bound locals. This list is ordered.
        // Names should be unique.
        internal IEnumerable EarlyLocals 
        {
            get { return this.earlyLocals; } 
        } 

        internal int NumberOfEarlyLocals 
        {
            get { return this.numberOfEarlyLocals; }
        }
 
        internal void CacheMethodInfo(Type type, string methodName)
        { 
            this.type = type; 
            this.methodName = methodName;
        } 

        // Helper to lazily get the MethodInfo. This is expensive, so caller should cache it.
        internal MethodInfo GetMethodInfo(bool withPriming)
        { 
            MethodInfo methodInfo = this.type.GetMethod(withPriming ? StateManager.MethodWithPrimingPrefix + this.methodName : this.methodName);
            return methodInfo; 
        } 
    }
} 

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

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