System.CodeDom.Tests.CSharpCodeGenerationTests.Goto C# (CSharp) Метод

        public void Goto()
        {
            CodeNamespace ns = new CodeNamespace("NS");
            ns.Imports.Add(new CodeNamespaceImport("System"));

            CodeTypeDeclaration class1 = new CodeTypeDeclaration();
            class1.Name = "Test";
            class1.IsClass = true;
            ns.Types.Add(class1);

            // create first method to test gotos that jump ahead to a defined label with statement
            var cmm = new CodeMemberMethod();
            cmm.Name = "FirstMethod";
            cmm.ReturnType = new CodeTypeReference(typeof(int));
            cmm.Attributes = MemberAttributes.Public | MemberAttributes.Static;
            CodeParameterDeclarationExpression param = new CodeParameterDeclarationExpression(typeof(int), "i");
            cmm.Parameters.Add(param);
            CodeConditionStatement condstmt = new CodeConditionStatement(new CodeBinaryOperatorExpression(
                                new CodeVariableReferenceExpression("i"), CodeBinaryOperatorType.LessThan, new CodePrimitiveExpression(1)),
                                new CodeGotoStatement("comehere"));
            cmm.Statements.Add(condstmt);
            cmm.Statements.Add(new CodeMethodReturnStatement(new CodePrimitiveExpression(6)));
            cmm.Statements.Add(new CodeLabeledStatement("comehere",
                                new CodeMethodReturnStatement(new CodePrimitiveExpression(7))));
            class1.Members.Add(cmm);

            // create second method to test gotos that jump ahead to a defined label without a statement attached to it
            cmm = new CodeMemberMethod();
            cmm.Name = "SecondMethod";
            cmm.ReturnType = new CodeTypeReference(typeof(int));
            cmm.Attributes = MemberAttributes.Public | MemberAttributes.Static;
            param = new CodeParameterDeclarationExpression(typeof(int), "i");
            cmm.Parameters.Add(param);
            condstmt = new CodeConditionStatement(new CodeBinaryOperatorExpression(
                                new CodeVariableReferenceExpression("i"), CodeBinaryOperatorType.LessThan, new CodePrimitiveExpression(1)),
                                new CodeGotoStatement("comehere"));
            cmm.Statements.Add(condstmt);
            cmm.Statements.Add(new CodeMethodReturnStatement(new CodePrimitiveExpression(6)));
            cmm.Statements.Add(new CodeLabeledStatement("comehere"));
            cmm.Statements.Add(new CodeMethodReturnStatement(new CodePrimitiveExpression(7)));
            class1.Members.Add(cmm);

            // create third method to test gotos that jump to a previously defined label
            cmm = new CodeMemberMethod();
            cmm.Name = "ThirdMethod";
            cmm.ReturnType = new CodeTypeReference(typeof(int));
            cmm.Attributes = MemberAttributes.Public | MemberAttributes.Static;
            param = new CodeParameterDeclarationExpression(typeof(int), "i");
            cmm.Parameters.Add(param);
            CodeAssignStatement assignmt = new CodeAssignStatement(new CodeVariableReferenceExpression("i"),
                                new CodeBinaryOperatorExpression
                                (new CodeVariableReferenceExpression("i"), CodeBinaryOperatorType.Add,
                                new CodePrimitiveExpression(5)));
            cmm.Statements.Add(new CodeLabeledStatement("label", assignmt));
            condstmt = new CodeConditionStatement(new CodeBinaryOperatorExpression(
                                new CodeVariableReferenceExpression("i"), CodeBinaryOperatorType.LessThan, new CodePrimitiveExpression(1)),
                                new CodeGotoStatement("label"));
            cmm.Statements.Add(condstmt);
            cmm.Statements.Add(new CodeMethodReturnStatement(new CodeVariableReferenceExpression("i")));
            class1.Members.Add(cmm);

            AssertEqual(ns,
                @"namespace NS {
                      using System;

                      public class Test {
                          public static int FirstMethod(int i) {
                              if ((i < 1)) {
                                  goto comehere;
                              }
                              return 6;
                          comehere:
                              return 7;
                          }

                          public static int SecondMethod(int i) {
                              if ((i < 1)) {
                                  goto comehere;
                              }
                              return 6;
                          comehere:
                              return 7;
                          }

                          public static int ThirdMethod(int i) {
                          label:
                              i = (i + 5);
                              if ((i < 1)) {
                                  goto label;
                              }
                              return i;
                          }
                      }
                  }");
        }