Daily update on 20250330-080745 by Nitload Youmu. Additional Message : CASEOF block in full function, next is Collection operation, relative keywords processing and REPEAT block.

Signed-off-by: Nitload <YoumuLiu_NSI@whv0t.onmicrosoft.com>
2025-03-30 08:07:45 +08:00
parent 17a226c206
commit 1a1db3554b
11 changed files with 208 additions and 47 deletions
@@ -0,0 +1,131 @@
+//-----------------------------------------------------------------------
+//-----------------------------------------------------------------------
+//     file="ExpSyntaxAnalyzer.CaseOf.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.Diagnostics;
+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
+    {
+
+        private bool AppendToken_CaseOf( Token t )
+        {
+            Token op;
+            ExpNode root;
+            switch( t.Value )
+            {
+                case ExpKeyword.Case:
+                    CaseOfStateCache state = new CaseOfStateCache( t );
+                    _cache.CurrentDepthMark.StateCache = state;
+                    state.CurrentState = t.Value;
+                    return true;
+                case ExpKeyword.Of:
+                    state = _cache.StateOfCurrentDepth<CaseOfStateCache>();
+                    while( _cache.TryPopOperator( out op ) ) {
+                        ConvertAndPushOneOperator( op );
+                    }
+                    _cache.PopOperand( out _, out root );
+                    state.CaseExpression = root;
+                    state.CurrentState = t.Value;
+                    return true;
+                case ":":
+                    state = _cache.StateOfCurrentDepth<CaseOfStateCache>();
+                    if( state.CurrentState != ExpKeyword.Of && state.CurrentState !=
+                        ExpKeyword.Otherwise )
+                    {
+                        root = _cache.PackAllStatements();
+                        state.CloseCurrentCase( root );
+                    }
+                    while( _cache.TryPopOperator( out op ) ) {
+                        ConvertAndPushOneOperator( op );
+                    }
+                    if( !_cache.PopOperand( out _, out root ) )
+                    {
+                        // sth wrong, case expression cannot generate;
+                    }
+                    state.CurrentCase = root;
+                    return true;
+                case ExpKeyword.Otherwise:
+                    state = _cache.StateOfCurrentDepth<CaseOfStateCache>();
+                    root = _cache.PackAllStatements();
+                    state.CloseCurrentCase( root );
+                    state.CurrentState = t.Value;
+                    return true;
+                case ExpKeyword.EndCase:
+                    state = _cache.StateOfCurrentDepth<CaseOfStateCache>();
+                    root = _cache.PackAllStatements();
+                    state.CloseCurrentCase( root );
+                    root = new ExpSwitchNode(
+                        state.Begin, state.CaseExpression, state.DefaultCase, state.Cases );
+                    _cache.DecreaseDepth();
+                    _cache.StatementsInDepth.Push( root );
+                    return true;
+                default:
+                    AppendToken_common( t );
+                    return true;
+            }
+        }
+
+        private class CaseOfStateCache : ICompileDepthState
+        {
+
+            public CaseOfStateCache( Token t )
+            {
+                Begin = t;
+            }
+
+            public Dictionary<ExpNode, ExpNode> Cases { get; } = new Dictionary<ExpNode, ExpNode>();
+
+            public ExpNode CaseExpression { get; set; }
+
+            public ExpNode DefaultCase { get; set; }
+
+            public ExpNode CurrentCase { get; set; }
+
+            public string CurrentState { get; set; }
+
+            public Token Begin { get; init; }
+
+            public void CloseCurrentCase( ExpNode root )
+            {
+                Cases.Add( CurrentCase, root );
+            }
+
+        }
+
+    }
+}