C# Generator.ScriptGenerator类代码示例

        public static void GenerateClassConstructorScript(ScriptGenerator generator, ClassSymbol classSymbol)
        {
            // NOTE: This is emitted last in the script file, and separate from the initial class definition
            //       because it needs to be emitted after the class registration.

            foreach (MemberSymbol memberSymbol in classSymbol.Members) {
                if ((memberSymbol.Type == SymbolType.Field) &&
                    ((memberSymbol.Visibility & MemberVisibility.Static) != 0)) {
                    if (((FieldSymbol)memberSymbol).IsConstant &&
                        ((memberSymbol.Visibility & (MemberVisibility.Public | MemberVisibility.Protected)) == 0)) {
                        // PrivateInstance/Internal constant fields are omitted since they have been inlined
                        continue;
                    }

                    MemberGenerator.GenerateScript(generator, memberSymbol);
                }
            }

            if (classSymbol.StaticConstructor != null) {
                ScriptTextWriter writer = generator.Writer;

                writer.Write("(function");
                writer.WriteTrimmed(" () ");
                writer.Write("{");
                writer.WriteNewLine();
                writer.Indent++;
                CodeGenerator.GenerateScript(generator, classSymbol.StaticConstructor);
                writer.Indent--;
                writer.Write("})();");
                writer.WriteSignificantNewLine();
            }
        }

        public static void GenerateComment(ScriptGenerator generator, Symbol symbol) {
            ScriptTextWriter writer = generator.Writer;

            switch (symbol.Type) {
                case SymbolType.Class:
                    GenerateClassComment(writer, (ClassSymbol)symbol);
                    break;
                case SymbolType.Enumeration:
                    GenerateEnumerationComment(writer, (EnumerationSymbol)symbol);
                    break;
                case SymbolType.Event:
                    GenerateEventComment(writer, (EventSymbol)symbol);
                    break;
                case SymbolType.Indexer:
                    GenerateIndexerComment(writer, (IndexerSymbol)symbol);
                    break;
                case SymbolType.Interface:
                    GenerateInterfaceComment(writer, (InterfaceSymbol)symbol);
                    break;
                case SymbolType.Method:
                    GenerateMethodComment(writer, (MethodSymbol)symbol);
                    break;
                case SymbolType.Property:
                    GeneratePropertyComment(writer, (PropertySymbol)symbol);
                    break;
                default:
                    Debug.Fail("Unexpected symbol type");
                    break;
            }
        }

        private static void GenerateForStatement(ScriptGenerator generator, MemberSymbol symbol, ForStatement statement) {
            if (statement.Body == null) {
                return;
            }

            ScriptTextWriter writer = generator.Writer;

            writer.WriteTrimmed("for ");
            writer.Write("(");
            if (statement.Initializers != null) {
                ExpressionGenerator.GenerateExpressionList(generator, symbol, statement.Initializers);
            }
            else if (statement.Variables != null) {
                GenerateVariableDeclarations(generator, symbol, statement.Variables);
            }
            writer.WriteTrimmed("; ");
            if (statement.Condition != null) {
                ExpressionGenerator.GenerateExpression(generator, symbol, statement.Condition);
            }
            writer.WriteTrimmed("; ");
            if (statement.Increments != null) {
                ExpressionGenerator.GenerateExpressionList(generator, symbol, statement.Increments);
            }
            writer.WriteTrimmed(") ");
            writer.Write("{");
            writer.WriteNewLine();
            writer.Indent++;
            GenerateStatement(generator, symbol, statement.Body);
            writer.Indent--;
            writer.Write("}");
            writer.WriteNewLine();
        }

        public static void GenerateScript(ScriptGenerator generator, MemberSymbol memberSymbol)
        {
            Debug.Assert(memberSymbol.Parent is TypeSymbol);
            TypeSymbol typeSymbol = (TypeSymbol)memberSymbol.Parent;

            string typeName = typeSymbol.FullGeneratedName;

            switch (memberSymbol.Type) {
                case SymbolType.Field:
                    GenerateField(generator, typeName, (FieldSymbol)memberSymbol);
                    break;
                case SymbolType.Indexer:
                    GenerateIndexer(generator, typeName, (IndexerSymbol)memberSymbol);
                    break;
                case SymbolType.Property:
                    GenerateProperty(generator, typeName, (PropertySymbol)memberSymbol);
                    break;
                case SymbolType.Method:
                    GenerateMethod(generator, typeName, (MethodSymbol)memberSymbol);
                    break;
                case SymbolType.Event:
                    GenerateEvent(generator, typeName, (EventSymbol)memberSymbol);
                    break;
            }
        }

        private static void GenerateBlockStatement(ScriptGenerator generator, MemberSymbol symbol, BlockStatement statement) {
            ScriptTextWriter writer = generator.Writer;

            foreach (Statement s in statement.Statements) {
                GenerateStatement(generator, symbol, s);
            }
        }

        private static void GenerateExpressionStatement(ScriptGenerator generator, MemberSymbol symbol, ExpressionStatement statement) {
            ScriptTextWriter writer = generator.Writer;

            ExpressionGenerator.GenerateExpression(generator, symbol, statement.Expression);
            if (statement.IsFragment == false) {
                writer.Write(";");
                writer.WriteNewLine();
            }
        }

 private static void GenerateErrorStatement(ScriptGenerator generator, MemberSymbol symbol, ErrorStatement statement) {
     ScriptTextWriter writer = generator.Writer;
     writer.Write("// ERROR: ");
     writer.Write(statement.Message);
     writer.WriteSignificantNewLine();
     writer.Write("// ERROR: at ");
     writer.Write(statement.Location);
     writer.WriteSignificantNewLine();
 }

 public static void GenerateScript(ScriptGenerator generator, IndexerSymbol symbol, bool getter) {
     SymbolImplementation accessorImpl;
     if (getter) {
         accessorImpl = symbol.GetterImplementation;
     }
     else {
         accessorImpl = symbol.SetterImplementation;
     }
     GenerateImplementationScript(generator, symbol, accessorImpl);
 }

        public static void GenerateRegistrationScript(ScriptGenerator generator, TypeSymbol typeSymbol)
        {
            ClassSymbol classSymbol = typeSymbol as ClassSymbol;

            if ((classSymbol != null) && classSymbol.IsExtenderClass) {
                return;
            }

            ScriptTextWriter writer = generator.Writer;

            writer.Write(typeSymbol.GeneratedName);
            writer.Write(": ");

            switch (typeSymbol.Type) {
                case SymbolType.Class:
                    writer.Write("[ ");
                    writer.Write(typeSymbol.FullGeneratedName);
                    writer.Write(", ");
                    if (((ClassSymbol)typeSymbol).IsStaticClass == false) {
                        writer.Write(typeSymbol.FullGeneratedName);
                        writer.Write("$, ");
                    }
                    else {
                        writer.Write("null, ");
                    }
                    if ((classSymbol.BaseClass == null) || classSymbol.IsTestClass) {
                        // TODO: We need to introduce the notion of a base class that only exists in the metadata
                        //       and not at runtime. At that point this check of IsTestClass can be generalized.

                        writer.Write("null");
                    }
                    else {
                        writer.Write(classSymbol.BaseClass.FullGeneratedName);
                    }
                    if (classSymbol.Interfaces != null) {
                        foreach (InterfaceSymbol interfaceSymbol in classSymbol.Interfaces) {
                            writer.Write(", ");
                            writer.Write(interfaceSymbol.FullGeneratedName);
                        }
                    }
                    writer.Write(" ]");
                    break;
                case SymbolType.Interface:
                    writer.Write("[ ");
                    writer.Write(typeSymbol.FullGeneratedName);
                    writer.Write(" ]");
                    break;
                case SymbolType.Record:
                case SymbolType.Resources:
                case SymbolType.Enumeration:
                    writer.Write(typeSymbol.FullGeneratedName);
                    break;
            }
        }

 public static void GenerateStatement(ScriptGenerator generator, MemberSymbol symbol, Statement statement)
 {
     switch (statement.Type) {
         case StatementType.Block:
             GenerateBlockStatement(generator, symbol, (BlockStatement)statement);
             break;
         case StatementType.Empty:
             break;
         case StatementType.VariableDeclaration:
             GenerateVariableDeclarationStatement(generator, symbol, (VariableDeclarationStatement)statement);
             break;
         case StatementType.Return:
             GenerateReturnStatement(generator, symbol, (ReturnStatement)statement);
             break;
         case StatementType.Expression:
             GenerateExpressionStatement(generator, symbol, (ExpressionStatement)statement);
             break;
         case StatementType.IfElse:
             GenerateIfElseStatement(generator, symbol, (IfElseStatement)statement);
             break;
         case StatementType.While:
             GenerateWhileStatement(generator, symbol, (WhileStatement)statement);
             break;
         case StatementType.For:
             GenerateForStatement(generator, symbol, (ForStatement)statement);
             break;
         case StatementType.ForIn:
             GenerateForInStatement(generator, symbol, (ForInStatement)statement);
             break;
         case StatementType.Switch:
             GenerateSwitchStatement(generator, symbol, (SwitchStatement)statement);
             break;
         case StatementType.Break:
             GenerateBreakStatement(generator, symbol, (BreakStatement)statement);
             break;
         case StatementType.Continue:
             GenerateContinueStatement(generator, symbol, (ContinueStatement)statement);
             break;
         case StatementType.Throw:
             GenerateThrowStatement(generator, symbol, (ThrowStatement)statement);
             break;
         case StatementType.TryCatchFinally:
             GenerateTryCatchFinallyStatement(generator, symbol, (TryCatchFinallyStatement)statement);
             break;
         case StatementType.Error:
             GenerateErrorStatement(generator, symbol, (ErrorStatement)statement);
             break;
         default:
             Debug.Fail("Unexpected statement type: " + statement.Type);
             break;
     }
 }

        private static void GenerateBaseInitializerExpression(ScriptGenerator generator, MemberSymbol symbol, BaseInitializerExpression expression) {
            ScriptTextWriter writer = generator.Writer;

            Debug.Assert(symbol.Parent is ClassSymbol);

            writer.Write(((ClassSymbol)symbol.Parent).FullGeneratedName);
            writer.Write(".initializeBase(this");
            if (expression.Parameters != null) {
                writer.Write(",");
                writer.WriteTrimmed(" [ ");
                GenerateExpressionList(generator, symbol, expression.Parameters);
                writer.WriteTrimmed(" ]");
            }
            writer.Write(")");
        }

        public static void GenerateScript(ScriptGenerator generator, NamespaceSymbol namespaceSymbol, Dictionary<string,bool> generatedNamespaces)
        {
            Debug.Assert(generator != null);
            Debug.Assert(namespaceSymbol != null);
            Debug.Assert(namespaceSymbol.HasApplicationTypes);

            ScriptTextWriter writer = generator.Writer;

            // First generate enums and interfaces which do not have cross-dependencies
            // (Classes for example, might have dependencies on enums)

            foreach (TypeSymbol type in namespaceSymbol.Types) {
                if (type.IsApplicationType) {
                    if (type.IsTestType && (generator.Options.IncludeTests == false)) {
                        continue;
                    }

                    string namespaceName = type.GeneratedNamespace;
                    if ((namespaceName.Length != 0) &&
                        (generatedNamespaces.ContainsKey(namespaceName) == false)) {
                        writer.Write("Type.registerNamespace('");
                        writer.Write(namespaceName);
                        writer.Write("');");
                        writer.WriteNewLine();
                        writer.WriteNewLine();
                        generatedNamespaces[namespaceName] = true;
                    }
                }

                if (type.IsApplicationType &&
                    ((type.Type == SymbolType.Enumeration) ||
                     (type.Type == SymbolType.Interface) ||
                     (type.Type == SymbolType.Record) ||
                     (type.Type == SymbolType.Resources))) {
                    TypeGenerator.GenerateScript(generator, type);
                }
            }

            foreach (TypeSymbol type in namespaceSymbol.Types) {
                if (type.IsApplicationType && (type.Type == SymbolType.Class)) {
                    if (type.IsTestType && (generator.Options.IncludeTests == false)) {
                        continue;
                    }

                    TypeGenerator.GenerateScript(generator, type);
                }
            }
        }

        public static void GenerateClassRegistrationScript(ScriptGenerator generator, ClassSymbol classSymbol)
        {
            // NOTE: This is emitted towards the end of the script file as opposed to immediately after the
            //       class definition, because it allows us to reference other class (base class, interfaces)
            //       without having to do a manual topological sort to get the ordering of class definitions
            //       that would be needed otherwise.

            ScriptTextWriter writer = generator.Writer;
            string name = classSymbol.FullGeneratedName;

            writer.Write(name);
            writer.Write(".registerClass('");
            writer.Write(generator.Options.AssemblyName);
            writer.Write("', '");
            writer.Write(name);
            writer.Write("'");

            // TODO: We need to introduce the notion of a base class that only exists in the metadata
            //       and not at runtime. At that point this check of IsTestClass can be generalized.
            if (classSymbol.IsTestClass) {
                writer.Write(");");
                writer.WriteNewLine();

                return;
            }

            if (classSymbol.BaseClass != null) {
                writer.WriteTrimmed(", ");
                writer.Write(classSymbol.BaseClass.FullGeneratedName);
            }

            if (classSymbol.Interfaces != null) {
                if (classSymbol.BaseClass == null) {
                    writer.WriteTrimmed(", ");
                    writer.Write("null");
                }
                foreach (InterfaceSymbol interfaceSymbol in classSymbol.Interfaces) {
                    writer.WriteTrimmed(", ");
                    writer.Write(interfaceSymbol.FullGeneratedName);
                }
            }

            writer.Write(");");
            writer.WriteNewLine();
        }

        public static void GenerateClassConstructorScript(ScriptGenerator generator, ClassSymbol classSymbol)
        {
            // NOTE: This is emitted last in the script file, and separate from the initial class definition
            //       because it needs to be emitted after the class registration.

            foreach (MemberSymbol memberSymbol in classSymbol.Members) {
                if ((memberSymbol.Type == SymbolType.Field) &&
                    ((memberSymbol.Visibility & MemberVisibility.Static) != 0)) {
                    FieldSymbol fieldSymbol = (FieldSymbol)memberSymbol;

                    if (fieldSymbol.IsConstant &&
                        ((memberSymbol.Visibility & (MemberVisibility.Public | MemberVisibility.Protected)) == 0)) {
                        // PrivateInstance/Internal constant fields are omitted since they have been inlined
                        continue;
                    }

                    if (fieldSymbol.HasInitializer) {
                        MemberGenerator.GenerateScript(generator, memberSymbol);
                    }
                }
            }

            if (classSymbol.StaticConstructor != null) {
                ScriptTextWriter writer = generator.Writer;

                SymbolImplementation implementation = classSymbol.StaticConstructor.Implementation;
                bool requiresFunctionScope = implementation.DeclaresVariables;

                if (requiresFunctionScope) {
                    writer.WriteLine("(function() {");
                    writer.Indent++;
                }
                CodeGenerator.GenerateScript(generator, classSymbol.StaticConstructor);
                if (requiresFunctionScope) {
                    writer.Indent--;
                    writer.Write("})();");
                    writer.WriteLine();
                }
            }
        }

        private static void GenerateMethodExpression(ScriptGenerator generator, MemberSymbol symbol, MethodExpression expression)
        {
            ScriptTextWriter writer = generator.Writer;

            if (expression.Method.SkipGeneration) {
                // If this method is to be skipped from generation, just generate the
                // left-hand-side object reference, and skip everything past it, including
                // the dot.

                GenerateExpression(generator, symbol, expression.ObjectReference);
                return;
            }

            if (expression.ObjectReference is BaseExpression) {
                Debug.Assert(symbol.Parent is ClassSymbol);
                Debug.Assert(expression.Method.IsGlobalMethod == false);

                writer.Write(((ClassSymbol)symbol.Parent).FullGeneratedName);
                writer.Write(".callBaseMethod(this, '");
                writer.Write(expression.Method.GeneratedName);
                writer.Write("'");
                if ((expression.Parameters != null) && (expression.Parameters.Count != 0)) {
                    writer.Write(",");
                    writer.WriteTrimmed(" [ ");
                    GenerateExpressionList(generator, symbol, expression.Parameters);
                    writer.WriteTrimmed(" ]");
                }
                writer.Write(")");
            }
            else {
                if (expression.Method.IsGlobalMethod) {
                    if (expression.Method.Parent is ClassSymbol) {
                        string mixinRoot = ((ClassSymbol)expression.Method.Parent).MixinRoot;
                        if (String.IsNullOrEmpty(mixinRoot) == false) {
                            writer.Write(mixinRoot);
                            writer.Write(".");
                        }
                    }
                }
                else {
                    GenerateExpression(generator, symbol, expression.ObjectReference);
                    if (expression.Method.GeneratedName.Length != 0) {
                        writer.Write(".");
                    }
                }

                if (expression.Method.GeneratedName.Length != 0) {
                    writer.Write(expression.Method.GeneratedName);
                }
                writer.Write("(");
                if (expression.Parameters != null) {
                    GenerateExpressionList(generator, symbol, expression.Parameters);
                }
                writer.Write(")");
            }
        }