IronPython.Compiler.Ast.IfStatement.ReduceWorker C# (CSharp) Method

        private MSAst.Expression ReduceWorker(bool optimizeDynamicConvert) {
            MSAst.Expression result;

            if (_tests.Length > 100) {
                // generate:
                // if(x) {
                //   body
                //   goto end
                // } else { 
                // }
                // elseBody
                // end:
                //
                // to avoid deeply recursive trees which can stack overflow.
                BlockBuilder builder = new BlockBuilder();
                var label = Ast.Label();
                for (int i = 0; i < _tests.Length; i++) {
                    IfStatementTest ist = _tests[i];

                    builder.Add(
                        Ast.Condition(
                            optimizeDynamicConvert ?
                                TransformAndDynamicConvert(ist.Test, typeof(bool)) :
                                GlobalParent.Convert(typeof(bool), Microsoft.Scripting.Actions.ConversionResultKind.ExplicitCast, ist.Test),
                            Ast.Block(
                                TransformMaybeSingleLineSuite(ist.Body, GlobalParent.IndexToLocation(ist.Test.StartIndex)),
                                Ast.Goto(label)
                            ),
                            Utils.Empty()
                        )
                    );
                }

                if (_else != null) {
                    builder.Add(_else);
                }

                builder.Add(Ast.Label(label));
                result = builder.ToExpression();
            } else {
                // Now build from the inside out
                if (_else != null) {
                    result = _else;
                } else {
                    result = AstUtils.Empty();
                }

                int i = _tests.Length;
                while (i-- > 0) {
                    IfStatementTest ist = _tests[i];

                    result = GlobalParent.AddDebugInfoAndVoid(
                        Ast.Condition(
                            optimizeDynamicConvert ?
                                TransformAndDynamicConvert(ist.Test, typeof(bool)) :
                                GlobalParent.Convert(typeof(bool), Microsoft.Scripting.Actions.ConversionResultKind.ExplicitCast, ist.Test),
                            TransformMaybeSingleLineSuite(ist.Body, GlobalParent.IndexToLocation(ist.Test.StartIndex)),
                            result
                        ),
                        new SourceSpan(GlobalParent.IndexToLocation(ist.StartIndex), GlobalParent.IndexToLocation(ist.HeaderIndex))
                    );
                }
            }

            return result;
        }