558 lines
17 KiB
C#
558 lines
17 KiB
C#
#region --- License ---
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/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
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* See license.txt for license info
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Runtime.InteropServices;
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using System.Diagnostics;
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using System.IO;
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namespace Bind.Structures
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{
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/// <summary>
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/// Represents an opengl function.
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/// The return value, function name, function parameters and opengl version can be retrieved or set.
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/// </summary>
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public class Delegate
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{
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internal static DelegateCollection Delegates;
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private static bool delegatesLoaded;
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bool? cls_compliance_overriden;
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#region internal static void Initialize(string glSpec, string glSpecExt)
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internal static void Initialize(string glSpec, string glSpecExt)
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{
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if (!delegatesLoaded)
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{
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using (StreamReader sr = Utilities.OpenSpecFile(Settings.InputPath, glSpec))
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{
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Delegates = Bind.MainClass.Generator.ReadDelegates(sr);
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}
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if (!String.IsNullOrEmpty(glSpecExt))
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{
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using (StreamReader sr = Utilities.OpenSpecFile(Settings.InputPath, glSpecExt))
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{
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foreach (Delegate d in Bind.MainClass.Generator.ReadDelegates(sr).Values)
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{
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Utilities.Merge(Delegates, d);
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}
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}
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}
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Console.WriteLine("Marking CLS compliance for wrappers.");
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MarkCLSCompliance(Function.Wrappers);
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delegatesLoaded = true;
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}
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}
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#endregion
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#region --- Constructors ---
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public Delegate()
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{
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Parameters = new ParameterCollection();
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}
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public Delegate(Delegate d)
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{
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this.Category = d.Category;
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this.Name = d.Name;
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this.Parameters = new ParameterCollection(d.Parameters);
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this.ReturnType = new Type(d.ReturnType);
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this.Version = d.Version;
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//this.Version = !String.IsNullOrEmpty(d.Version) ? new string(d.Version.ToCharArray()) : "";
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}
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#endregion
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#region --- Properties ---
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#region public bool CLSCompliant
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/// <summary>
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/// Gets the CLSCompliant property. True if the delegate is not CLSCompliant.
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/// </summary>
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public virtual bool CLSCompliant
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{
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get
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{
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if (cls_compliance_overriden != null)
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return (bool)cls_compliance_overriden;
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if (Unsafe)
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return false;
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if (!ReturnType.CLSCompliant)
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return false;
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foreach (Parameter p in Parameters)
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{
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if (!p.CLSCompliant)
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return false;
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}
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return true;
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}
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set
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{
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cls_compliance_overriden = value;
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}
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}
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#endregion
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#region public string Category
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private string _category;
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public string Category
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{
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get { return _category; }
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set { _category = Enum.TranslateName(value); }
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}
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#endregion
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#region public bool NeedsWrapper
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/// <summary>
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/// Indicates whether this function needs to be wrapped with a Marshaling function.
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/// This flag is set if a function contains an Array parameter, or returns
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/// an Array or string.
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/// </summary>
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public bool NeedsWrapper
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{
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//get { return _needs_wrapper; }
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//set { _needs_wrapper = value; }
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get
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{
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// TODO: Add special cases for (Get)ShaderSource.
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if (ReturnType.WrapperType != WrapperTypes.None)
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return true;
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foreach (Parameter p in Parameters)
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{
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if (p.WrapperType != WrapperTypes.None)
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return true;
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}
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return false;
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}
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}
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#endregion
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#region public virtual bool Unsafe
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/// <summary>
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/// True if the delegate must be declared as 'unsafe'.
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/// </summary>
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public virtual bool Unsafe
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{
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//get { return @unsafe; }
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//set { @unsafe = value; }
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get
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{
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//if ((Settings.Compatibility & Settings.Legacy.NoPublicUnsafeFunctions) != Settings.Legacy.None)
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// return false;
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if (ReturnType.Pointer)
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return true;
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foreach (Parameter p in Parameters)
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{
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if (p.Pointer)
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{
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return true;
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}
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}
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return false;
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}
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}
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#endregion
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#region public Parameter ReturnType
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Type _return_type = new Type();
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/// <summary>
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/// Gets or sets the return value of the opengl function.
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/// </summary>
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public Type ReturnType
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{
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get { return _return_type; }
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set
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{
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_return_type = value;
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}
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}
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#endregion
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#region public virtual string Name
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string _name;
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/// <summary>
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/// Gets or sets the name of the opengl function.
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/// </summary>
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public virtual string Name
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{
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get { return _name; }
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set
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{
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if (!String.IsNullOrEmpty(value))
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{
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_name = value.Trim();
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}
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}
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}
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#endregion
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#region public ParameterCollection Parameters
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ParameterCollection _parameters;
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public ParameterCollection Parameters
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{
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get { return _parameters; }
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protected set { _parameters = value; }
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}
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#endregion
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#region public string Version
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string _version;
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/// <summary>
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/// Defines the opengl version that introduced this function.
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/// </summary>
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public string Version
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{
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get { return _version; }
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set { _version = value; }
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}
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#endregion
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#region public bool Extension
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string _extension;
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public string Extension
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{
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//get { return _extension; }
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//set { _extension = value; }
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get
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{
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if (!String.IsNullOrEmpty(Name))
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{
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_extension = Utilities.GetGL2Extension(Name);
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return String.IsNullOrEmpty(_extension) ? "Core" : _extension;
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}
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else
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{
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return null;
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}
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}
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}
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#endregion
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#endregion
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#region --- Strings ---
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#region public string CallString()
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public string CallString()
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{
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StringBuilder sb = new StringBuilder();
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sb.Append(Settings.DelegatesClass);
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sb.Append(".");
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sb.Append(Settings.FunctionPrefix);
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sb.Append(Name);
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sb.Append(Parameters.CallString());
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return sb.ToString();
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}
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#endregion
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/// <summary>
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/// Returns a string representing the full non-delegate declaration without decorations.
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/// (ie "(unsafe) void glXxxYyy(int a, float b, IntPtr c)"
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/// </summary>
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#region public string DeclarationString()
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public string DeclarationString()
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{
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StringBuilder sb = new StringBuilder();
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sb.Append(Unsafe ? "unsafe " : "");
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sb.Append(ReturnType);
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sb.Append(" ");
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sb.Append(Name);
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sb.Append(Parameters.ToString(true));
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return sb.ToString();
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}
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#endregion
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#region override public string ToString()
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/// <summary>
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/// Returns a string representing the full delegate declaration without decorations.
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/// (ie "(unsafe) void delegate glXxxYyy(int a, float b, IntPtr c)"
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/// </summary>
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override public string ToString()
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{
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StringBuilder sb = new StringBuilder();
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sb.Append(Unsafe ? "unsafe " : "");
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sb.Append("delegate ");
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sb.Append(ReturnType);
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sb.Append(" ");
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sb.Append(Name);
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sb.Append(Parameters.ToString(true));
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return sb.ToString();
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}
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#endregion
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public Delegate GetCLSCompliantDelegate()
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{
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Delegate f = new Delegate(this);
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for (int i = 0; i < f.Parameters.Count; i++)
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{
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f.Parameters[i].CurrentType = f.Parameters[i].GetCLSCompliantType();
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}
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f.ReturnType.CurrentType = f.ReturnType.GetCLSCompliantType();
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return f;
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}
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#endregion
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#region --- Wrapper Creation ---
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#region MarkCLSCompliance
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static void MarkCLSCompliance(FunctionCollection collection)
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{
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foreach (List<Function> wrappers in Function.Wrappers.Values)
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{
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for (int i = 0; i < wrappers.Count; i++)
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{
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for (int j = i + 1; j < wrappers.Count; j++)
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{
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if (wrappers[i].TrimmedName == wrappers[j].TrimmedName && wrappers[i].Parameters.Count == wrappers[j].Parameters.Count)
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{
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bool function_i_is_problematic = false;
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bool function_j_is_problematic = false;
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int k;
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for (k = 0; k < wrappers[i].Parameters.Count; k++)
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{
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if (wrappers[i].Parameters[k].CurrentType != wrappers[j].Parameters[k].CurrentType)
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break;
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if (wrappers[i].Parameters[k].DiffersOnlyOnReference(wrappers[j].Parameters[k]))
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if (wrappers[i].Parameters[k].Reference)
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function_i_is_problematic = true;
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else
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function_j_is_problematic = true;
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}
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if (k == wrappers[i].Parameters.Count)
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{
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if (function_i_is_problematic)
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wrappers[i].CLSCompliant = false;
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if (function_j_is_problematic)
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wrappers[j].CLSCompliant = false;
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}
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}
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}
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}
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}
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}
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#endregion
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#region CreateWrappers
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void CreateWrappers()
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{
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List<Function> wrappers = new List<Function>();
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if (!NeedsWrapper)
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{
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// No special wrapper needed - just call this delegate:
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Function f = new Function(this);
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f.CreateBody(false);
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wrappers.Add(f);
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}
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else
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{
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Function f = new Function(this);
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f.WrapReturnType();
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f.WrapParameters(wrappers);
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}
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// If the function is not CLS-compliant (e.g. it contains unsigned parameters)
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// we need to create a CLS-Compliant overload. However, we should only do this
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// iff the opengl function does not contain unsigned/signed overloads itself
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// to avoid redefinitions.
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foreach (Function f in wrappers)
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{
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Bind.Structures.Function.Wrappers.AddChecked(f);
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if (!f.CLSCompliant)
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{
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Function cls = new Function(f);
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cls.Body.Clear();
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cls.CreateBody(true);
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bool somethingChanged = false;
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for (int i = 0; i < f.Parameters.Count; i++)
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{
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cls.Parameters[i].CurrentType = cls.Parameters[i].GetCLSCompliantType();
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if (cls.Parameters[i].CurrentType != f.Parameters[i].CurrentType)
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somethingChanged = true;
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}
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if (somethingChanged)
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Bind.Structures.Function.Wrappers.AddChecked(cls);
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}
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}
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}
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#endregion
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#region void TranslateReturnType()
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/// <summary>
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/// Translates the opengl return type to the equivalent C# type.
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/// </summary>
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/// <param name="d">The opengl function to translate.</param>
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/// <remarks>
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/// First, we use the official typemap (gl.tm) to get the correct type.
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/// Then we override this, when it is:
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/// 1) A string (we have to use Marshal.PtrToStringAnsi, to avoid heap corruption)
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/// 2) An array (translates to IntPtr)
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/// 3) A generic object or void* (translates to IntPtr)
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/// 4) A GLenum (translates to int on Legacy.Tao or GL.Enums.GLenum otherwise).
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/// Return types must always be CLS-compliant, because .Net does not support overloading on return types.
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/// </remarks>
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void TranslateReturnType()
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{
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/*
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if (Bind.Structures.Type.GLTypes.ContainsKey(ReturnType.CurrentType))
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ReturnType.CurrentType = Bind.Structures.Type.GLTypes[ReturnType.CurrentType];
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if (Bind.Structures.Type.CSTypes.ContainsKey(ReturnType.CurrentType))
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ReturnType.CurrentType = Bind.Structures.Type.CSTypes[ReturnType.CurrentType];
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*/
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ReturnType.Translate(this.Category);
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if (ReturnType.CurrentType.ToLower().Contains("void") && ReturnType.Pointer)
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{
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ReturnType.CurrentType = "IntPtr";
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ReturnType.WrapperType = WrapperTypes.GenericReturnType;
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}
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if (ReturnType.CurrentType.ToLower().Contains("string"))
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{
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ReturnType.CurrentType = "IntPtr";
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ReturnType.WrapperType = WrapperTypes.StringReturnType;
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}
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if (ReturnType.CurrentType.ToLower().Contains("object"))
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{
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ReturnType.CurrentType = "IntPtr";
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ReturnType.WrapperType |= WrapperTypes.GenericReturnType;
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}
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if (ReturnType.CurrentType.Contains("GLenum"))
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{
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if ((Settings.Compatibility & Settings.Legacy.ConstIntEnums) == Settings.Legacy.None)
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ReturnType.CurrentType = String.Format("{0}.{1}", Settings.EnumsOutput, Settings.CompleteEnumName);
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else
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ReturnType.CurrentType = "int";
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}
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ReturnType.CurrentType = ReturnType.GetCLSCompliantType();
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}
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#endregion
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#region protected virtual void TranslateParameters()
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protected virtual void TranslateParameters()
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{
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// Iterates through all parameters, calling the Parameter.Translate() function.
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for (int i = 0; i < Parameters.Count; i++)
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{
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Parameters[i].Translate(this.Category);
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if (Parameters[i].CurrentType == "UInt16" && Name.Contains("LineStipple"))
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Parameters[i].WrapperType = WrapperTypes.UncheckedParameter;
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// Special case: these functions take a string[]
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if (Name.Contains("ShaderSource") && Parameters[i].CurrentType.ToLower().Contains("string"))
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Parameters[i].Array = 1;
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}
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}
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#endregion
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internal void Translate()
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{
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TranslateReturnType();
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TranslateParameters();
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CreateWrappers();
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}
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#endregion
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}
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#region class DelegateCollection : Dictionary<string, Delegate>
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class DelegateCollection : Dictionary<string, Delegate>
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{
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public void Add(Delegate d)
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{
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if (!this.ContainsKey(d.Name))
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{
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this.Add(d.Name, d);
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}
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else
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{
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Trace.WriteLine(String.Format(
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"Spec error: function {0} redefined, ignoring second definition.",
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d.Name));
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}
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}
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}
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#endregion
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}
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