Daily update on 20250328-131548 by Nitload Youmu. Additional Message : IF branch can be full functionally compiled. Next will be CASE_OF branch

Signed-off-by: Nitload <YoumuLiu_NSI@whv0t.onmicrosoft.com>
2025-03-28 13:15:48 +08:00
parent 36b6ad5a52
commit 17a226c206
18 changed files with 1069 additions and 74 deletions
@@ -0,0 +1,163 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="ExpSyntaxAnalyzer.OperatorParser.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 System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using ExpKeyword = StgSharp.Script.Express.ExpressCompile.Keyword;
+
+namespace StgSharp.Script.Express
+{
+    public partial class ExpSyntaxAnalyzer
+    {
+
+        public int CompareOperatorPrecedence( Token left, Token right )
+        {
+            ExpressCompile.TryGetOperatorPrecedence( left.Value, out int leftPrecedence );
+            ExpressCompile.TryGetOperatorPrecedence( right.Value, out int rightPrecedence );
+            return leftPrecedence - rightPrecedence;
+        }
+
+        public bool TryGenerateUnaryNode( Token t, out ExpNode node )
+        {
+            ExpNode operand = GetNextOperandCache();
+            switch( t.Value )
+            {
+                case ExpKeyword.UnaryPlus:
+                    node = ExpUnaryOperatorNode.UnaryPlus( t, operand );
+                    return true;
+                case ExpKeyword.UnaryMinus:
+                    node = ExpUnaryOperatorNode.UnaryMinus( t, operand );
+                    return true;
+                case ExpKeyword.Not:
+                    node = ExpUnaryOperatorNode.UnaryNot( t, operand );
+                    return true;
+                default:
+                    node = ExpNode.Empty;
+                    return false;
+            }
+        }
+
+        /// <summary>
+        ///   WARNING: This method cannot process INDEXOF, FUNCTION CALLING, LOOP and any ENDING
+        ///   SYMBOLS.
+        /// </summary>
+        private ExpNode ConvertAndPushOneOperator( Token op )
+        {
+            switch( op.Flag )
+            {
+                case TokenFlag.Symbol_Unary:
+                    TryGenerateUnaryNode( op, out ExpNode? node );
+                    _cache.PushOperand( node );
+                    return node;
+                case TokenFlag.Symbol_Binary:
+                    TryGenerateBinaryNode( op, out node );
+                    _cache.PushOperand( node );
+                    return node;
+                case TokenFlag.Member:
+                    if( _context.TryGetFunction( op.Value, out ExpFunctionSource? f ) )
+                    {
+                        if( !_cache.PopOperand( out Token t, out ExpNode? p ) )
+                        {
+                            node = ExpFunctionCallingNode.CallFunction( op, f, p );
+                            return node;
+                        } else
+                        {
+                            throw new ExpCompileException(
+                                t,
+                                "An ExpNode for function calling is needed, but a token was popped" );
+                        }
+                    } else if( ExpSchema.BuiltinSchema.TryGetFunction( op.Value, out f ) )
+                    {
+                        if( !_cache.PopOperand( out Token t, out ExpNode? p ) )
+                        {
+                            node = ExpFunctionCallingNode.CallFunction( op, f, p );
+                            return node;
+                        } else
+                        {
+                            throw new ExpCompileException(
+                                t,
+                                "An ExpNode for function calling is needed, but a token was popped" );
+                        }
+                    } else
+                    {
+                        throw new NotImplementedException();
+
+                        //uncertain case here
+                    }
+                default:
+                    throw new NotImplementedException();
+            }
+        }
+
+        private bool TryGenerateBinaryNode( Token t, out ExpNode node )
+        {
+            ExpNode right = GetNextOperandCache();
+            ExpNode left = GetNextOperandCache();
+            switch( t.Value )
+            {
+                case ExpKeyword.Add:
+                    node = ExpBinaryOperatorNode.Add( t, left, right );
+                    return true;
+                case ExpKeyword.Sub:
+                    node = ExpBinaryOperatorNode.Sub( t, left, right );
+                    return true;
+                case ExpKeyword.Mul:
+                    node = ExpBinaryOperatorNode.Mul( t, left, right );
+                    return true;
+                case ExpKeyword.Div:
+                    node = ExpBinaryOperatorNode.Div( t, left, right );
+                    return true;
+                case ExpKeyword.Equal:
+                    node = ExpBinaryOperatorNode.EqualTo( t, left, right );
+                    return true;
+                case ExpKeyword.NotEqual:
+                    node = ExpBinaryOperatorNode.NotEqualTo( t, left, right );
+                    return true;
+                case ExpKeyword.GreaterThan:
+                    node = ExpBinaryOperatorNode.GreaterThan( t, left, right );
+                    return true;
+                case ExpKeyword.LessThan:
+                    node = ExpBinaryOperatorNode.LessThan( t, left, right );
+                    return true;
+                case ExpKeyword.Assignment:
+                    node = ExpBinaryOperatorNode.Assign( t, left, right );
+                    return true;
+                default:
+                    node = ExpNode.Empty;
+                    return false;
+            }
+        }
+
+    }
+}