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Resolving Symbolic References in a CodeDOM (Part 7)

, 2 Dec 2012 CDDL
Resolving symbolic references in a CodeDOM.
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Base
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Base
DocComments
CodeRef
Base
List
Name
Base
Other
Simple
CompilerDirectives
Base
Conditionals
Base
Messages
Base
Pragmas
Base
Symbols
Base
Base
Expressions
AnonymousMethods
Base
Operators
Base
Binary
Arithmetic
Base
Assignment
Base
Bitwise
Base
Conditional
Relational
Base
Shift
Base
Other
Base
Unary
Base
Other
References
Base
GotoTargets
Base
Methods
Namespaces
Other
Properties
Types
Base
Variables
Base
Projects
Namespaces
References
Base
Statements
Base
Conditionals
Base
Exceptions
Generics
Constraints
Base
Iterators
Base
Jumps
Loops
Methods
OperatorDecls
Miscellaneous
Namespaces
Properties
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Utilties
// The Nova Project by Ken Beckett.
// Copyright (C) 2007-2012 Inevitable Software, all rights reserved.
// Released under the Common Development and Distribution License, CDDL-1.0: http://opensource.org/licenses/cddl1.php

using System;

using Nova.Parsing;
using Nova.Resolving;

namespace Nova.CodeDOM
{
    /// <summary>
    /// Represents a special type of method used to read the value of a property.
    /// </summary>
    /// <remarks>
    /// A GetterDecl acquires its return type and internal name from its parent <see cref="PropertyDecl"/> or <see cref="IndexerDecl"/>.
    /// The return type will be null if no Parent has been set yet.
    /// </remarks>
    public class GetterDecl : AccessorDecl
    {
        #region /* CONSTANTS */

        /// <summary>
        /// The internal name prefix.
        /// </summary>
        public const string NamePrefix = ParseToken + "_";

        #endregion

        #region /* CONSTRUCTORS */

        /// <summary>
        /// Create a <see cref="GetterDecl"/>.
        /// </summary>
        public GetterDecl(Modifiers modifiers, CodeObject body)
            : base(NamePrefix, null, modifiers, body)
        { }

        /// <summary>
        /// Create a <see cref="GetterDecl"/>.
        /// </summary>
        public GetterDecl(Modifiers modifiers)
            : base(NamePrefix, null, modifiers)
        { }

        /// <summary>
        /// Create a <see cref="GetterDecl"/>.
        /// </summary>
        public GetterDecl()
            : base(NamePrefix, null, Modifiers.None)
        { }

        /// <summary>
        /// Create a <see cref="GetterDecl"/>.
        /// </summary>
        public GetterDecl(CodeObject body)
            : base(NamePrefix, null, body)
        { }

        #endregion

        #region /* PROPERTIES */

        /// <summary>
        /// The return type of the method (never null - will be type 'void' instead).
        /// </summary>
        public override Expression ReturnType
        {
            // The return type of a GetterDecl is always the type of the parent PropertyDeclBase
            get { return ((PropertyDeclBase)_parent).Type; }
            set { throw new Exception("Can't set the ReturnType of a GetterDecl - change the type of the PropertyDecl instead."); }
        }

        /// <summary>
        /// The keyword associated with the <see cref="Statement"/>.
        /// </summary>
        public override string Keyword
        {
            get { return ParseToken; }
        }

        #endregion

        #region /* PARSING */

        /// <summary>
        /// The token used to parse the code object.
        /// </summary>
        public const string ParseToken = "get";

        internal static new void AddParsePoints()
        {
            // Parse 'get' for Properties, Indexers, and Events
            // (analysis will complain in the last case that it should be 'add' instead)
            Parser.AddParsePoint(ParseToken, Parse, typeof(PropertyDeclBase));
        }

        /// <summary>
        /// Parse a <see cref="GetterDecl"/>.
        /// </summary>
        public static new GetterDecl Parse(Parser parser, CodeObject parent, ParseFlags flags)
        {
            return new GetterDecl(parser, parent, flags);
        }

        protected GetterDecl(Parser parser, CodeObject parent, ParseFlags flags)
            : base(parser, parent, NamePrefix, flags)
        {
            ParseAccessor(parser, flags);
        }

        #endregion

        #region /* RESOLVING */

        /// <summary>
        /// Resolve all child symbolic references, using the specified <see cref="ResolveCategory"/> and <see cref="ResolveFlags"/>.
        /// </summary>
        public override CodeObject Resolve(ResolveCategory resolveCategory, ResolveFlags flags)
        {
            if ((flags & (ResolveFlags.Phase1 | ResolveFlags.Phase3)) == 0)
            {
                // Don't resolve our ReturnType (the parent PropertyDeclBase will do it)
                ChildListHelpers.Resolve(_parameters, ResolveCategory.CodeObject, flags);
                if (_name is Expression)
                    _name = ((Expression)_name).Resolve(ResolveCategory.Method, flags);
            }
            if ((flags & (ResolveFlags.Phase1 | ResolveFlags.Phase2)) == 0)
            {
                ResolveAttributes(flags);
                if (_body != null)
                    _body.Resolve(ResolveCategory.CodeObject, flags);
            }
            return this;
        }

        #endregion
    }
}

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License

This article, along with any associated source code and files, is licensed under The Common Development and Distribution License (CDDL)

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About the Author

KenBeckett
Software Developer (Senior)
United States United States
I've been writing software since the late 70's, currently focusing mainly on C#.NET. I also like to travel around the world, and I own a Chocolate Factory (sadly, none of my employees are oompa loompas).

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