Daily update on 20250303-043627 by Nitload Youmu. Additional Message : remove node dependency to context, node instance ctor switched to factory mode,

Signed-off-by: Nitload <YoumuLiu_NSI@whv0t.onmicrosoft.com>
2025-03-03 04:36:27 +08:00
parent d12bbbd873
commit 825e68853c
26 changed files with 440 additions and 238 deletions
@@ -0,0 +1,143 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="_ExpNode.cs"
+//     Project: StgSharp
+//     AuthorGroup: Nitload Space
+//     Copyright (c) Nitload Space. All rights reserved.
+//     
+//     Permission is hereby granted, free of charge, to any person 
+//     obtaining a copy of this software and associated documentation 
+//     files (the “Software”), to deal in the Software without restriction, 
+//     including without limitation the rights to use, copy, modify, merge,
+//     publish, distribute, sublicense, and/or sell copies of the Software, 
+//     and to permit persons to whom the Software is furnished to do so, 
+//     subject to the following conditions:
+//     
+//     The above copyright notice and 
+//     this permission notice shall be included in all copies 
+//     or substantial portions of the Software.
+//     
+//     THE SOFTWARE IS PROVIDED “AS IS”, 
+//     WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+//     INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+//     IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+//     DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+//     ARISING FROM, OUT OF OR IN CONNECTION WITH 
+//     THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//     
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+using CommunityToolkit.HighPerformance.Buffers;
+
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StgSharp.Script.Express
+{
+    public abstract class ExpNode : IASTNode<ExpNode, IExpElementSource>
+    {
+
+        protected internal ExpNodeFlag _nodeFlag;
+        protected internal string _name;
+
+        protected ExpNode( string name )
+        {
+            _name = name;
+            Next = this;
+            Previous = this;
+        }
+
+        public bool IsNumber
+        {
+            get { return ( _nodeFlag | ExpNodeFlag.BuiltinType_Number ) != 0; }
+        }
+
+        public abstract ExpNode Left
+        {
+            get;
+        }
+
+        public static ExpNode Empty
+        {
+            get => ExpEmptyNode._only;
+        }
+
+        public ExpNode Next
+        {
+            get;
+            set;
+        }
+
+        public abstract ExpNode Right
+        {
+            get;
+        }
+
+        public ExpNode Previous
+        {
+            get;
+            set;
+        }
+
+        public abstract IExpElementSource EqualityTypeConvert
+        {
+            get;
+        }
+
+        public long NodeFlag => ( long )_nodeFlag;
+
+        public string CodeConvertTemplate
+        {
+            get;
+            init;
+        }
+
+        public string Name => _name;
+
+        public virtual void AppendNode( ExpNode nextToken )
+        {
+            Next.Previous = nextToken;
+            nextToken.Next = Next;
+            Next = nextToken;
+            Next.Previous = this;
+        }
+
+        public ExpNodeNextEnumerator GetEnumerator()
+        {
+            return new ExpNodeNextEnumerator( this );
+        }
+
+        public static bool IsNullOrEmpty( ExpNode node )
+        {
+            return  node == ExpEmptyNode._only || node == null;
+        }
+
+        public static bool VerifyTypeConvertable( ExpNode left, ExpNode right )
+        {
+            IExpElementSource tLeft = left.EqualityTypeConvert,
+                tRight = right.EqualityTypeConvert;
+            if( tLeft == null || tRight == null ) {
+                return false;
+            }
+            return tLeft.IsConvertable( tRight );
+        }
+
+        private class ExpEmptyNode : ExpNode
+        {
+
+            internal static readonly ExpEmptyNode _only = new();
+
+            public ExpEmptyNode() : base( string.Empty ) { }
+
+            public override ExpInstantiableElement EqualityTypeConvert => ExpInstantiableElement.Void;
+
+            public override ExpNode Left => _only;
+
+            public override ExpNode Right => _only;
+
+        }
+
+    }
+}