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Korro

Apache license [Gradle plugin]

Kotlin source code documentation plugin.

Inspired by kotlinx-knit.

This plugin produces code snippets into markdown documents from tests.

Setup

plugins {
    id("io.github.devcrocod.korro") version "0.0.3"
}

or

buildscript {
    dependencies {
        classpath "io.github.devcrocod:korro:0.0.3"
    }
}
                    
apply plugin: 'io.github.devcrocod.korro'

Tasks

  • korro - create/update samples in documentation
  • korroClean - remove inserted code snippets in documentation. Removes everything between the FUN/END and FUNS/END directives.
  • korroCheck - TODO
  • korroTest - TODO

Parameters

korro {
    docs = fileTree(project.rootDir) {
        include '**/*.md'
    }

    samples = fileTree(project.rootDir) {
        include 'src/test/samples/*.kt'
    }
}

To insert several samples by single reference in markdown use groupSamples. For example, to wrap samples that have the same function name prefix followed by _v1 or _v2 within HTML tabs use the following configuration:

korro {
  groupSamples {

    beforeSample = "<tab title=\"NAME\">\n"
    afterSample = "\n</tab>"

    funSuffix("_v1") {
      replaceText("NAME", "Version 1")
    }
    funSuffix("_v2") {
      replaceText("NAME", "Version 2")
    }
    beforeGroup = "<tabs>\n"
    afterGroup = "</tabs>"
  }
}

Docs

Directives

Korro does not parse the document and only recognizes directives. Directives must always start at the beginning of a line, start with

<!---

and end with

-->

There are also two types of directives that require and don't require the END closing directive.

IMPORT

The IMPORT directive is used to import a class containing test functions.

<!---IMPORT org.example.Test-->

Multiple imports can be specified in the documentation file.

Note:

Import will not include the entire package, that is, such a path is not recognized - org.example.*.

You can specify the same classes.

<!---IMPORT org.example.test.Test-->
<!---IMPORT org.example.test2.Test-->

If two classes contain the same function names, then the function will be taken from the first imported class.

FUN

FUN directive is used to insert code into documentation:

<!---FUN fully qualified name -->
<!---END-->

Code will be inserted between these two directives.

Only the part between the two comments // SampleStart, // SampleEnd will be taken from the test function:

fun test() {
    ...
    // SampleStart
    sample code
    // SampleEnd
    ...
}

Note:

Do not use function names with spaces enclosed in backticks

FUNS

END

The END directive is the closing directive for FUN and FUNS.

Sample

build.gradle

plugins {
    id("io.github.devcrocod.korro") version "0.0.3"
}

...

korro {
    docs = fileTree(project.rootDir) {
        include 'docs/doc.md'
    }

    samples = fileTree(project.rootDir) {
        include 'src/test/samples/test.kt'
    }
}

test.kt

package samples

import org.junit.Test
import org.junit.Assert.assertEquals

class Test {
    
    @Test
    fun exampleTest() {
        val a = 1
        val b = 2
        val c: Int
        // SampleStart
        c = a + b
        // SampleEnd
        assertEquals(3, c)
    }
}

doc.md

# Docs
<!---IMPORT samples.Test-->

Some text.

Example:
<!---FUN exampleTest-->
<!---END-->

Some text.

After you run korro you get the following file doc.md:

# Docs
<!---IMPORT samples.Test-->

Some text.

Example:
<!---FUN exampleTest-->
```kotlin
c = a + b
``'
<!---END-->

Some text.

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