func()

in tools/go-agent/instrument/logger/instrument.go [299:342]

• 38 lines of code
• 6 McCabe index (conditional complexity)

func (i *Instrument) addAutomaticFuncDelegators(f *dst.File, importDecl *dst.GenDecl) {
	packageName := filepath.Base(i.compileOpts.Package)
	for _, fun := range i.automaticFunc {
		fun.ImportAnalyzer.AppendUsedImports(importDecl)
		delegatorFunc := &dst.FuncDecl{
			Name: dst.NewIdent(fun.FuncName),
			Type: &dst.FuncType{
				Params: &dst.FieldList{},
			},
		}

		for i, recv := range tools.EnhanceParameterNamesWithPackagePrefix(packageName, fun.Func.Recv, tools.FieldListTypeRecv) {
			delegatorFunc.Type.Params.List = append(delegatorFunc.Type.Params.List, &dst.Field{
				Names: []*dst.Ident{dst.NewIdent(fmt.Sprintf("recv_%d", i))},
				Type:  &dst.StarExpr{X: recv.PackagedType()},
			})
		}

		for i, parameter := range tools.EnhanceParameterNamesWithPackagePrefix(packageName, fun.Func.Type.Params, tools.FieldListTypeParam) {
			packagedType := parameter.PackagedType()
			// if the parameter is dynamic list, then change it to the array type
			if el, ok := packagedType.(*dst.Ellipsis); ok {
				packagedType = &dst.ArrayType{Elt: el.Elt}
			}
			delegatorFunc.Type.Params.List = append(delegatorFunc.Type.Params.List, &dst.Field{
				Names: []*dst.Ident{dst.NewIdent(fmt.Sprintf("param_%d", i))},
				Type:  &dst.StarExpr{X: packagedType},
			})
		}

		for i, result := range tools.EnhanceParameterNamesWithPackagePrefix(packageName, fun.Func.Type.Results, tools.FieldListTypeResult) {
			delegatorFunc.Type.Params.List = append(delegatorFunc.Type.Params.List, &dst.Field{
				Names: []*dst.Ident{dst.NewIdent(fmt.Sprintf("ret_%d", i))},
				Type:  &dst.StarExpr{X: result.PackagedType()},
			})
		}

		delegatorFunc.Body = &dst.BlockStmt{
			List: tools.GoStringToStats(fun.DelegateBody),
		}

		f.Decls = append(f.Decls, delegatorFunc)
	}
}