CODEWITHSUNDEEP
go
Alexander Mills
Alexander Mills

Reputation: 99960

import subpackages with golang, by importing parent dir?

I have this main.go file:

package main

import "one/entities/bar"

func main(){

}

I have this dir structure:

enter image description here

When I build my project with:

go install main

I get this compilation error:

src/main/main.go:3:8: no Go files in /home/oleg/codes/oresoftware/oredoc/test/builds/go/src/one/entities/bar

that error makes sense. Is there some way to import all the subpackages from within the one/entities/bar directory?

Something like this:

package main

import bar "one/entities/bar/*"

func main(){

}

(using some sort of * syntax and importing all subpackages in the bar namespace).

Ultimately I am trying do something like this:

package main

import (
    "log"
    "one/entities/bar"
)

func main(){

    v := bar.Get.Basic.Req.Headers{}
    log.Fatal(v)

}

Upvotes: 2

Views: 10735

Answers (1)

Chen A.
Chen A.

Reputation: 11280

You can't do such thing, according to the specs of import:

The import names an identifier (PackageName) to be used for access and an 
ImportPath that specifies the package to be imported.

ImportDecl       = "import" ( ImportSpec | "(" { ImportSpec ";" } ")" ) .
ImportSpec       = [ "." | PackageName ] ImportPath .
ImportPath       = string_lit .

The import syntax requires a package name or path of a package. So no wildcard import.

This statement will clarify the why; 

The PackageName is used in qualified identifiers to access exported 
identifiers of the package within the importing source file.

You must specify in which package the element you are referring to exists. e.g, bar.Get.Basic.Req.Headers. This can't be determined without an explicit import.

Upvotes: 1

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