third_party/allwpilib/wpimath/build.gradle

import com.hubspot.jinjava.Jinjava;
import com.hubspot.jinjava.JinjavaConfig;

ext {
    useJava = true
    useCpp = true
    baseId = 'wpimath'
    groupId = 'edu.wpi.first.wpimath'

    nativeName = 'wpimath'
    devMain = 'edu.wpi.first.math.DevMain'
}

apply from: "${rootDir}/shared/jni/setupBuild.gradle"

cppHeadersZip {
    from('src/main/native/eigeninclude') {
        into '/'
    }
}

model {
    components {
        all {
            it.sources.each {
                it.exportedHeaders {
                    srcDirs 'src/main/native/include', 'src/main/native/eigeninclude'
                }
            }
        }
    }
}

dependencies {
    api "org.ejml:ejml-simple:0.41"
    api "com.fasterxml.jackson.core:jackson-annotations:2.12.4"
    api "com.fasterxml.jackson.core:jackson-core:2.12.4"
    api "com.fasterxml.jackson.core:jackson-databind:2.12.4"
}

def wpilibNumberFileInput = file("src/generate/GenericNumber.java.jinja")
def natFileInput = file("src/generate/Nat.java.jinja")
def wpilibNumberFileOutputDir = file("$buildDir/generated/java/edu/wpi/first/math/numbers")
def wpilibNatFileOutput = file("$buildDir/generated/java/edu/wpi/first/math/Nat.java")
def maxNum = 20

task generateNumbers() {
    description = "Generates generic number classes from template"
    group = "WPILib"

    inputs.file wpilibNumberFileInput
    outputs.dir wpilibNumberFileOutputDir

    doLast {
        if(wpilibNumberFileOutputDir.exists()) {
            wpilibNumberFileOutputDir.delete()
        }
        wpilibNumberFileOutputDir.mkdirs()

        def config = new JinjavaConfig()
        def jinjava = new Jinjava(config)

        def template = wpilibNumberFileInput.text

        for(i in 0..maxNum) {
            def outputFile = new File(wpilibNumberFileOutputDir, "N${i}.java")
            def replacements = new HashMap<String,?>()
            replacements.put("num", i)
            def output = jinjava.render(template, replacements)
            outputFile.write(output)
        }
    }
}

task generateNat() {
    description = "Generates Nat.java"
    group = "WPILib"
    inputs.file natFileInput
    outputs.file wpilibNatFileOutput
    dependsOn generateNumbers

    doLast {
        if(wpilibNatFileOutput.exists()) {
            wpilibNatFileOutput.delete()
        }

        def config = new JinjavaConfig()
        def jinjava = new Jinjava(config)

        def template = natFileInput.text

        def replacements = new HashMap<String,?>()
        replacements.put("nums", 0..maxNum)

        def output = jinjava.render(template, replacements)
        wpilibNatFileOutput.write(output)
    }
}

sourceSets.main.java.srcDir "${buildDir}/generated/java"
compileJava.dependsOn generateNumbers
compileJava.dependsOn generateNat