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# Import.scala 
[](https://travis-ci.org/ThoughtWorksInc/Import.scala)
**Import.scala** is a Scala compiler plugin that enables magic imports.
## Setup
```sbt
addCompilerPlugin("com.thoughtworks.import" %% "import" % "latest.release")
```
## Magic Imports
This plugin provides a set of magic imports that let you load additional
code into a Scala source file: these are imports which start with a `$`.
The syntax is similar to [magic imports in Ammonite](https://www.lihaoyi.com/Ammonite/#MagicImports).
### `import $file`
This lets you load code snippets into current source file. For
example given a small script defining one value we want
```scala
// MyScript.sc
val elite = 31337
```
We can load it into our current source file using:
```scala
import $file.MyScript
assert(MyScript.elite == 31337)
```
If the script is in a sub-folder, simply use:
```scala
import $file.myfolder.MyScript
```
Or if the script is in an *outer* folder,
```scala
import $file.`..`.MyScript
```
Or if you want to import the contents of the script in one go:
```scala
import $file.MyScript, MyScript._
assert(elite == 31337)
```
Or if you want to download the script from a website:
```scala
import $file.`https://gist.github.com/Atry/5dcb1414b804fd7679393cacac3c89fc/raw/5b1748ab6b45c00be0109686fdb25e85cde11ce0/include-example.sc`
assert(`https://gist.github.com/Atry/5dcb1414b804fd7679393cacac3c89fc/raw/5b1748ab6b45c00be0109686fdb25e85cde11ce0/include-example.sc`.i == 42)
```
Or if you prefer using dot as the path separator:
```scala
import $file.`https://gist.github.com`.Atry.`5dcb1414b804fd7679393cacac3c89fc`.raw.`5b1748ab6b45c00be0109686fdb25e85cde11ce0`.`include-example`
assert(`include-example`.i == 42)
```
While this is a trivial example, your `MyScript.sc` file can
contain anything you want, not just `val`s: function
`def`s, `class`es `object`s or
`trait`s, or `import`s from *other* scripts.
#### Cannot directly import from inside a Script
You cannot import things from "inside" that script in
one chain:
```scala
import $file.MyScript._
```
Rather, you must always import the script-object first, and then import
things from the script object after:
```scala
import $file.MyScript, MyScript._
```
#### Renamed-scripts and multiple-scripts
You can re-name scripts on-import if you find their names are
colliding:
```scala
import $file.{MyScript => FooBarScript}, FooBarScript._
```
Or re-name a URL:
```scala
import $file.{ `https://gist.github.com/Atry/5dcb1414b804fd7679393cacac3c89fc/raw/5b1748ab6b45c00be0109686fdb25e85cde11ce0/include-example.sc` => Renamed}
assert(Renamed.i == 42)
```
Or import multiple scripts at once
```scala
import $file.{MyScript, MyOtherScript}
```
These behave as you would expect imports to work. Note that when
importing multiple scripts, you have to name them explicitly and
cannot use wildcard `._` imports:
```scala
import $file._ // doesn't work
```
### `import $url`
`import $url` is an alias to `import $file`.
### `import $exec`
This is similar to `import $file`, except that it dumps the definitions and imports from the script into your current source file.
This is useful if you are using a script to hold a set of common imports.
```scala
import $exec.MyScript
assert(elite == 31337)
```
```scala
import $exec.`https://gist.github.com/Atry/5dcb1414b804fd7679393cacac3c89fc/raw/5b1748ab6b45c00be0109686fdb25e85cde11ce0/include-example.sc`
assert(i == 42)
```
## Acknowledgements
The examples in this README.md file is based on Li Haoyi's [Ammonite document](https://www.lihaoyi.com/Ammonite/#MagicImports) and copyright licensed under MIT. See the [Markdown source](https://github.com/ThoughtWorksInc/import.scala/raw/master/README.md).
[](https://travis-ci.org/ThoughtWorksInc/Import.scala)
**Import.scala** is a Scala compiler plugin that enables magic imports.
## Setup
```sbt
addCompilerPlugin("com.thoughtworks.import" %% "import" % "latest.release")
```
## Magic Imports
This plugin provides a set of magic imports that let you load additional
code into a Scala source file: these are imports which start with a `$`.
The syntax is similar to [magic imports in Ammonite](https://www.lihaoyi.com/Ammonite/#MagicImports).
### `import $file`
This lets you load code snippets into current source file. For
example given a small script defining one value we want
```scala
// MyScript.sc
val elite = 31337
```
We can load it into our current source file using:
```scala
import $file.MyScript
assert(MyScript.elite == 31337)
```
If the script is in a sub-folder, simply use:
```scala
import $file.myfolder.MyScript
```
Or if the script is in an *outer* folder,
```scala
import $file.`..`.MyScript
```
Or if you want to import the contents of the script in one go:
```scala
import $file.MyScript, MyScript._
assert(elite == 31337)
```
Or if you want to download the script from a website:
```scala
import $file.`https://gist.github.com/Atry/5dcb1414b804fd7679393cacac3c89fc/raw/5b1748ab6b45c00be0109686fdb25e85cde11ce0/include-example.sc`
assert(`https://gist.github.com/Atry/5dcb1414b804fd7679393cacac3c89fc/raw/5b1748ab6b45c00be0109686fdb25e85cde11ce0/include-example.sc`.i == 42)
```
Or if you prefer using dot as the path separator:
```scala
import $file.`https://gist.github.com`.Atry.`5dcb1414b804fd7679393cacac3c89fc`.raw.`5b1748ab6b45c00be0109686fdb25e85cde11ce0`.`include-example`
assert(`include-example`.i == 42)
```
While this is a trivial example, your `MyScript.sc` file can
contain anything you want, not just `val`s: function
`def`s, `class`es `object`s or
`trait`s, or `import`s from *other* scripts.
#### Cannot directly import from inside a Script
You cannot import things from "inside" that script in
one chain:
```scala
import $file.MyScript._
```
Rather, you must always import the script-object first, and then import
things from the script object after:
```scala
import $file.MyScript, MyScript._
```
#### Renamed-scripts and multiple-scripts
You can re-name scripts on-import if you find their names are
colliding:
```scala
import $file.{MyScript => FooBarScript}, FooBarScript._
```
Or re-name a URL:
```scala
import $file.{ `https://gist.github.com/Atry/5dcb1414b804fd7679393cacac3c89fc/raw/5b1748ab6b45c00be0109686fdb25e85cde11ce0/include-example.sc` => Renamed}
assert(Renamed.i == 42)
```
Or import multiple scripts at once
```scala
import $file.{MyScript, MyOtherScript}
```
These behave as you would expect imports to work. Note that when
importing multiple scripts, you have to name them explicitly and
cannot use wildcard `._` imports:
```scala
import $file._ // doesn't work
```
### `import $url`
`import $url` is an alias to `import $file`.
### `import $exec`
This is similar to `import $file`, except that it dumps the definitions and imports from the script into your current source file.
This is useful if you are using a script to hold a set of common imports.
```scala
import $exec.MyScript
assert(elite == 31337)
```
```scala
import $exec.`https://gist.github.com/Atry/5dcb1414b804fd7679393cacac3c89fc/raw/5b1748ab6b45c00be0109686fdb25e85cde11ce0/include-example.sc`
assert(i == 42)
```
## Acknowledgements
The examples in this README.md file is based on Li Haoyi's [Ammonite document](https://www.lihaoyi.com/Ammonite/#MagicImports) and copyright licensed under MIT. See the [Markdown source](https://github.com/ThoughtWorksInc/import.scala/raw/master/README.md).