Add gradle

.gitignore

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+.gradle
+.idea
+build

README.md

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+Katalyst
+========
+
+[![Download](https://api.bintray.com/packages/aedans/maven/katalyst/images/download.svg)](https://bintray.com/aedans/maven/katalyst/_latestVersion)
+
+Kotlin recursion schemes with [Kategory](https://github.com/kategory/kategory).
+
+Gradle
+------
+
+```gradle
+repositories {
+    maven { url 'https://dl.bintray.com/aedans/maven/' }
+}
+
+dependencies {
+    compile 'io.github.aedans:katalyst:0.1.0'
+}
+```
+
+Features
+--------
+
+- [x] Mu, Nu, and Fix data types
+- [x] Recursive, Corecursive, and Birecursive typeclasses
+- [x] Cata, ana, and hylo morphisms
+- [x] List and Nat defined using recursion schemes
+- [ ] Generalized Functor, Foldable, and Traverse instances
+- [ ] Env and CoEnv data types
+- [ ] Kleisli, Elgot, and Generalized recursion schemes
+- [ ] (G|M|Elgot)Algebra-based morphisms
+- [ ] Free and Cofree defined using recursion schemes
+- [ ] Recursive and Corecursive instances for Free and Cofree 
+
+Contributing
+------------
+
+Katalyst is a long way from being complete, and any help is greatly
+appreciated. If you find a bug, please open an issue. If you just want
+to write some code, there are plenty of unimplemented or incomplete
+features that need to be implemented; just open a Pull Request and
+hack at it. 
+
+Resources
+---------
+
+[Recursion Schemes](https://github.com/ekmett/recursion-schemes), the
+original Haskell implementation.
+
+[Matryoshka](https://github.com/slamdata/matryoshka), which
+much of Katalyst's code is based off of.

build.gradle

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+group 'io.github.aedans'
+version '0.1.0'
+
+buildscript {
+    ext.kotlin_version = '1.1.60'
+
+    repositories {
+        mavenCentral()
+        jcenter()
+    }
+
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
+    }
+}
+
+apply plugin: 'java'
+apply plugin: 'kotlin'
+apply plugin: 'kotlin-kapt'
+apply plugin: 'com.jfrog.bintray'
+apply plugin: 'maven-publish'
+apply from: rootProject.file('gradle/generated-kotlin-sources.gradle')
+
+sourceCompatibility = 1.8
+
+repositories {
+    mavenCentral()
+    jcenter()
+    maven { url 'https://kotlin.bintray.com/kotlinx' }
+    maven { url 'https://dl.bintray.com/kategory/maven' }
+}
+
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jre8:$kotlin_version"
+    compile 'io.kategory:kategory:0.3.11'
+    kapt    'io.kategory:kategory-annotations-processor:0.3.11'
+    testCompile 'io.kotlintest:kotlintest:2.0.7'
+    testCompile 'io.kategory:kategory-test:0.3.11'
+}
+
+task sourcesJar(type: Jar, dependsOn: classes) {
+    classifier = 'sources'
+    from sourceSets.main.allSource
+}
+
+artifacts {
+    archives sourcesJar
+}
+
+publishing {
+    publications {
+        publishToBintray(MavenPublication) {
+            from components.java
+            Artifact sourcesJar
+        }
+    }
+}
+
+bintray {
+    user = System.getenv('BINTRAY_USER')
+    key = System.getenv('BINTRAY_KEY')
+    publications = ['publishToBintray']
+    publish = true
+
+    pkg {
+        repo = 'maven'
+        name = 'katalyst'
+        userOrg = user
+
+        version {
+            name = project.version
+        }
+    }
+}

gradle/generated-kotlin-sources.gradle

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+apply plugin: 'idea'
+
+idea {
+    module {
+        sourceDirs += files(
+                'build/generated/source/kapt/main',
+                'build/generated/source/kaptKotlin/main',
+                'build/tmp/kapt/main/kotlinGenerated')
+        generatedSourceDirs += files(
+                'build/generated/source/kapt/main',
+                'build/generated/source/kaptKotlin/main',
+                'build/tmp/kapt/main/kotlinGenerated')
+    }
+}

gradle/wrapper/gradle-wrapper.properties

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+#Sun Oct 22 15:14:17 PDT 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.5-rc-2-all.zip

gradlew

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+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+    echo "$*"
+}
+
+die ( ) {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save ( ) {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"