Pull out some common metadata types

icsharpcode · Jul 22, 2024 · 785ee54 · 785ee54
1 parent c7dcfd9
commit 785ee54
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Showing 4 changed files with 36 additions and 15 deletions.
diff --git a/CodeConverter/CSharp/CommonConversions.cs b/CodeConverter/CSharp/CommonConversions.cs
@@ -20,7 +20,6 @@ namespace ICSharpCode.CodeConverter.CSharp;
 
 internal class CommonConversions
 {
-    public ITypeSymbol System_Linq_Expressions_Expression_T { get; }
     private static readonly Type ExtensionAttributeType = typeof(ExtensionAttribute);
     public Document Document { get; }
     public SemanticModel SemanticModel { get; }
@@ -49,9 +48,11 @@ public CommonConversions(Document document, SemanticModel semanticModel,
         _typeContext = typeContext;
         VisualBasicEqualityComparison = visualBasicEqualityComparison;
         WinformsConversions = new WinformsConversions(typeContext);
-        System_Linq_Expressions_Expression_T = semanticModel.Compilation.GetTypeByMetadataName("System.Linq.Expressions.Expression`1");
+        KnownTypes = new KnownNamedTypes(semanticModel);
     }
 
+    public KnownNamedTypes KnownTypes { get; }
+
     public record VariablePair(CSSyntax.VariableDeclaratorSyntax CsVar, VBSyntax.ModifiedIdentifierSyntax VbVar);
     public record VariablesDeclaration(CSSyntax.VariableDeclarationSyntax Decl, ITypeSymbol Type, List<VariablePair> Variables);
 
@@ -756,5 +757,5 @@ public bool IsLinqDelegateExpression(VisualBasicSyntaxNode node)
         return false;
     }
 
-    private bool IsLinqDelegateExpression(ITypeSymbol convertedType) => System_Linq_Expressions_Expression_T?.Equals(convertedType?.OriginalDefinition, SymbolEqualityComparer.Default) == true;
+    private bool IsLinqDelegateExpression(ITypeSymbol convertedType) =>KnownTypes.System_Linq_Expressions_Expression_T?.Equals(convertedType?.OriginalDefinition, SymbolEqualityComparer.Default) == true;
 }
diff --git a/CodeConverter/CSharp/ExpressionNodeVisitor.cs b/CodeConverter/CSharp/ExpressionNodeVisitor.cs
@@ -35,7 +35,6 @@ internal class ExpressionNodeVisitor : VBasic.VisualBasicSyntaxVisitor<Task<CSha
     private readonly QueryConverter _queryConverter;
     private readonly Lazy<IReadOnlyDictionary<ITypeSymbol, string>> _convertMethodsLookupByReturnType;
     private readonly LambdaConverter _lambdaConverter;
-    private readonly INamedTypeSymbol _vbBooleanTypeSymbol;
     private readonly VisualBasicNullableExpressionsConverter _visualBasicNullableTypesConverter;
     private readonly Dictionary<string, Stack<(SyntaxNode Scope, string TempName)>> _tempNameForAnonymousScope = new();
     private readonly HashSet<string> _generatedNames = new(StringComparer.OrdinalIgnoreCase);
@@ -58,7 +57,6 @@ public ExpressionNodeVisitor(SemanticModel semanticModel,
         // If this isn't needed, the assembly with Conversions may not be referenced, so this must be done lazily
         _convertMethodsLookupByReturnType =
             new Lazy<IReadOnlyDictionary<ITypeSymbol, string>>(() => CreateConvertMethodsLookupByReturnType(semanticModel));
-        _vbBooleanTypeSymbol = _semanticModel.Compilation.GetTypeByMetadataName("System.Boolean");
     }
 
     private static IReadOnlyDictionary<ITypeSymbol, string> CreateConvertMethodsLookupByReturnType(
@@ -775,7 +773,7 @@ public override async Task<CSharpSyntaxNode> VisitBinaryConditionalExpression(VB
     public override async Task<CSharpSyntaxNode> VisitTernaryConditionalExpression(VBasic.Syntax.TernaryConditionalExpressionSyntax node)
     {
         var condition = await node.Condition.AcceptAsync<ExpressionSyntax>(TriviaConvertingExpressionVisitor);
-        condition = CommonConversions.TypeConversionAnalyzer.AddExplicitConversion(node.Condition, condition, forceTargetType: _vbBooleanTypeSymbol);
+        condition = CommonConversions.TypeConversionAnalyzer.AddExplicitConversion(node.Condition, condition, forceTargetType: CommonConversions.KnownTypes.Boolean);
 
         var whenTrue = await node.WhenTrue.AcceptAsync<ExpressionSyntax>(TriviaConvertingExpressionVisitor);
         whenTrue = CommonConversions.TypeConversionAnalyzer.AddExplicitConversion(node.WhenTrue, whenTrue);
@@ -900,7 +898,7 @@ private async Task<CSharpSyntaxNode> ConvertBinaryExpressionAsync(VBasic.Syntax.
                 omitConversion = lhsTypeInfo.Type.SpecialType == SpecialType.System_String ||
                                  rhsTypeInfo.Type.SpecialType == SpecialType.System_String;
                 if (lhsTypeInfo.ConvertedType.SpecialType != SpecialType.System_String) {
-                    forceLhsTargetType = _semanticModel.Compilation.GetTypeByMetadataName("System.String");
+                    forceLhsTargetType = CommonConversions.KnownTypes.String;
                 }
             }
         }
@@ -938,6 +936,8 @@ private async Task<CSharpSyntaxNode> ConvertBinaryExpressionAsync(VBasic.Syntax.
         return node.Parent.IsKind(VBasic.SyntaxKind.SimpleArgument) ? exp : exp.AddParens();
     }
 
+
+
     private async Task<ExpressionSyntax> RewriteBinaryOperatorOrNullAsync(VBSyntax.BinaryExpressionSyntax node) =>
         await _operatorConverter.ConvertRewrittenBinaryOperatorOrNullAsync(node, TriviaConvertingExpressionVisitor.IsWithinQuery);
 
@@ -1837,7 +1837,7 @@ private ArgumentSyntax CreateOptionalRefArg(IParameterSymbol p, RefKind refKind)
 
         bool HasOptionalAttribute(IParameterSymbol p)
         {
-            var optionalAttribute = _semanticModel.Compilation.GetTypeByMetadataName("System.Runtime.InteropServices.OptionalAttribute");
+            var optionalAttribute = CommonConversions.KnownTypes.OptionalAttribute;
             if (optionalAttribute == null) {
                 return false;
             }
@@ -1849,7 +1849,7 @@ bool TryGetDefaultParameterValueAttributeValue(IParameterSymbol p, out object de
         {
             defaultValue = null;
 
-            var defaultParameterValueAttribute = _semanticModel.Compilation.GetTypeByMetadataName("System.Runtime.InteropServices.DefaultParameterValueAttribute");
+            var defaultParameterValueAttribute = CommonConversions.KnownTypes.DefaultParameterValueAttribute;
             if (defaultParameterValueAttribute == null) {
                 return false;
             }
@@ -1941,7 +1941,7 @@ private ISymbol GetInvocationSymbol(SyntaxNode invocation)
             (VBSyntax.InvocationExpressionSyntax e) => _semanticModel.GetSymbolInfo(e).ExtractBestMatch<ISymbol>(),
             (VBSyntax.ObjectCreationExpressionSyntax e) => _semanticModel.GetSymbolInfo(e).ExtractBestMatch<ISymbol>(),
             (VBSyntax.RaiseEventStatementSyntax e) => _semanticModel.GetSymbolInfo(e.Name).ExtractBestMatch<ISymbol>(),
-            (VBSyntax.MidExpressionSyntax _) => _semanticModel.Compilation.GetTypeByMetadataName("Microsoft.VisualBasic.CompilerServices.StringType")?.GetMembers("MidStmtStr").FirstOrDefault(),
+            (VBSyntax.MidExpressionSyntax _) => CommonConversions.KnownTypes.VbCompilerStringType?.GetMembers("MidStmtStr").FirstOrDefault(),
             _ => throw new NotSupportedException());
         return symbol;
     }

diff --git a/CodeConverter/CSharp/KnownNamedTypes.cs b/CodeConverter/CSharp/KnownNamedTypes.cs
@@ -0,0 +1,22 @@
+namespace ICSharpCode.CodeConverter.CSharp;
+
+internal class KnownNamedTypes
+{
+    public KnownNamedTypes(SemanticModel semanticModel)
+    {
+        Boolean = semanticModel.Compilation.GetTypeByMetadataName("System.Boolean");
+        String = semanticModel.Compilation.GetTypeByMetadataName("System.String");
+        DefaultParameterValueAttribute = semanticModel.Compilation.GetTypeByMetadataName("System.Runtime.InteropServices.DefaultParameterValueAttribute");
+        OptionalAttribute = semanticModel.Compilation.GetTypeByMetadataName("System.Runtime.InteropServices.OptionalAttribute");
+        System_Linq_Expressions_Expression_T = semanticModel.Compilation.GetTypeByMetadataName("System.Linq.Expressions.Expression`1");
+        VbCompilerStringType = semanticModel.Compilation.GetTypeByMetadataName("Microsoft.VisualBasic.CompilerServices.StringType");
+    }
+
+    public INamedTypeSymbol System_Linq_Expressions_Expression_T { get; set; }
+
+    public INamedTypeSymbol Boolean { get; }
+    public INamedTypeSymbol String { get; }
+    public INamedTypeSymbol DefaultParameterValueAttribute { get; }
+    public INamedTypeSymbol OptionalAttribute { get; }
+    public INamedTypeSymbol VbCompilerStringType { get; }
+}
diff --git a/CodeConverter/CSharp/MethodBodyExecutableStatementVisitor.cs b/CodeConverter/CSharp/MethodBodyExecutableStatementVisitor.cs
@@ -24,7 +24,6 @@ internal class MethodBodyExecutableStatementVisitor : VBasic.VisualBasicSyntaxVi
     private readonly HashSet<string> _extraUsingDirectives;
     private readonly HandledEventsAnalysis _handledEventsAnalysis;
     private readonly HashSet<string> _generatedNames = new();
-    private readonly INamedTypeSymbol _vbBooleanTypeSymbol;
     private readonly HashSet<ILocalSymbol> _localsToInlineInLoop;
     private readonly PerScopeState _perScopeState;
 
@@ -65,7 +64,6 @@ private MethodBodyExecutableStatementVisitor(VisualBasicSyntaxNode methodNode, S
         _perScopeState = typeContext.PerScopeState;
         var byRefParameterVisitor = new PerScopeStateVisitorDecorator(this, _perScopeState, semanticModel, _generatedNames);
         CommentConvertingVisitor = new CommentConvertingMethodBodyVisitor(byRefParameterVisitor);
-        _vbBooleanTypeSymbol = _semanticModel.Compilation.GetTypeByMetadataName("System.Boolean");
         _localsToInlineInLoop = localsToInlineInLoop;
     }
 
@@ -520,7 +518,7 @@ await node.Name.AcceptAsync<NameSyntax>(_expressionVisitor),
     public override async Task<SyntaxList<StatementSyntax>> VisitSingleLineIfStatement(VBSyntax.SingleLineIfStatementSyntax node)
     {
         var condition = await node.Condition.AcceptAsync<ExpressionSyntax>(_expressionVisitor);
-        condition = CommonConversions.TypeConversionAnalyzer.AddExplicitConversion(node.Condition, condition, forceTargetType: _vbBooleanTypeSymbol);
+        condition = CommonConversions.TypeConversionAnalyzer.AddExplicitConversion(node.Condition, condition, forceTargetType: CommonConversions.KnownTypes.Boolean);
         var block = SyntaxFactory.Block(await ConvertStatementsAsync(node.Statements));
         ElseClauseSyntax elseClause = null;
 
@@ -534,7 +532,7 @@ public override async Task<SyntaxList<StatementSyntax>> VisitSingleLineIfStateme
     public override async Task<SyntaxList<StatementSyntax>> VisitMultiLineIfBlock(VBSyntax.MultiLineIfBlockSyntax node)
     {
         var condition = await node.IfStatement.Condition.AcceptAsync<ExpressionSyntax>(_expressionVisitor);
-        condition = CommonConversions.TypeConversionAnalyzer.AddExplicitConversion(node.IfStatement.Condition, condition, forceTargetType: _vbBooleanTypeSymbol);
+        condition = CommonConversions.TypeConversionAnalyzer.AddExplicitConversion(node.IfStatement.Condition, condition, forceTargetType: CommonConversions.KnownTypes.Boolean);
         var block = SyntaxFactory.Block(await ConvertStatementsAsync(node.Statements));
 
         var elseClause = await ConvertElseClauseAsync(node.ElseBlock);
@@ -553,7 +551,7 @@ public override async Task<SyntaxList<StatementSyntax>> VisitMultiLineIfBlock(VB
     {
         var elseBlock = SyntaxFactory.Block(await ConvertStatementsAsync(elseIf.Statements));
         var elseIfCondition = await elseIf.ElseIfStatement.Condition.AcceptAsync<ExpressionSyntax>(_expressionVisitor);
-        elseIfCondition = CommonConversions.TypeConversionAnalyzer.AddExplicitConversion(elseIf.ElseIfStatement.Condition, elseIfCondition, forceTargetType: _vbBooleanTypeSymbol);
+        elseIfCondition = CommonConversions.TypeConversionAnalyzer.AddExplicitConversion(elseIf.ElseIfStatement.Condition, elseIfCondition, forceTargetType: CommonConversions.KnownTypes.Boolean);
         return (elseIfCondition, elseBlock);
     }