diff options
| -rw-r--r-- | .gitignore | 3 | ||||
| -rw-r--r-- | README.md | 2 | ||||
| -rw-r--r-- | build.gradle.kts | 31 | ||||
| -rw-r--r-- | gradle.properties | 1 | ||||
| -rw-r--r-- | gradle/wrapper/gradle-wrapper.jar | bin | 0 -> 59536 bytes | |||
| -rw-r--r-- | gradle/wrapper/gradle-wrapper.properties | 5 | ||||
| -rw-r--r-- | gradlew | 185 | ||||
| -rw-r--r-- | gradlew.bat | 89 | ||||
| -rw-r--r-- | settings.gradle.kts | 3 | ||||
| -rw-r--r-- | src/main/kotlin/me/bush/illnamethislater/Event.kt | 18 | ||||
| -rw-r--r-- | src/main/kotlin/me/bush/illnamethislater/EventBus.kt | 82 | ||||
| -rw-r--r-- | src/main/kotlin/me/bush/illnamethislater/Listener.kt | 51 | ||||
| -rw-r--r-- | src/main/kotlin/me/bush/illnamethislater/Util.kt | 57 | ||||
| -rw-r--r-- | src/test/kotlin/Main.kt | 26 |
14 files changed, 553 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..b740e72 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +# Project exclude paths +/.gradle/ +/build/
\ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..320bdb7 --- /dev/null +++ b/README.md @@ -0,0 +1,2 @@ +#EVENTBUS-KOTLIN + this isnt done yet i just wanted to get the gh up diff --git a/build.gradle.kts b/build.gradle.kts new file mode 100644 index 0000000..b882228 --- /dev/null +++ b/build.gradle.kts @@ -0,0 +1,31 @@ +import org.jetbrains.kotlin.gradle.tasks.KotlinCompile + +plugins { + kotlin("jvm") version "1.6.10" +} + +group = "me.bush" +version = "1.0.0" + +repositories { + mavenCentral() +} + +dependencies { + testImplementation(kotlin("test")) + + // Staying on the version used by 1.12.2 to avoid possible incompatibilities. + // 2.15.0 is not vulnerable to any RCE exploits. + implementation("org.apache.logging.log4j:log4j-api:2.15.0") + implementation("org.apache.logging.log4j:log4j-core:2.15.0") + + implementation("org.jetbrains.kotlin:kotlin-reflect:1.6.10") +} + +tasks.test { + useJUnitPlatform() +} + +tasks.withType<KotlinCompile> { + kotlinOptions.jvmTarget = "1.8" +}
\ No newline at end of file diff --git a/gradle.properties b/gradle.properties new file mode 100644 index 0000000..7fc6f1f --- /dev/null +++ b/gradle.properties @@ -0,0 +1 @@ +kotlin.code.style=official diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar Binary files differnew file mode 100644 index 0000000..7454180 --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.jar diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..69a9715 --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.1-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists @@ -0,0 +1,185 @@ +#!/usr/bin/env sh + +# +# Copyright 2015 the original author or authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# https://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +############################################################################## +## +## 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 "$0"` + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD="maximum" + +warn () { + echo "$*" +} + +die () { + echo + echo "$*" + echo + exit 1 +} + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "`uname`" in + CYGWIN* ) + cygwin=true + ;; + Darwin* ) + darwin=true + ;; + MSYS* | MINGW* ) + msys=true + ;; + NONSTOP* ) + nonstop=true + ;; +esac + +CLASSPATH=$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 or MSYS, switch paths to Windows format before running java +if [ "$cygwin" = "true" -o "$msys" = "true" ] ; 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=`expr $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" + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,89 @@ +@rem +@rem Copyright 2015 the original author or authors. +@rem +@rem Licensed under the Apache License, Version 2.0 (the "License"); +@rem you may not use this file except in compliance with the License. +@rem You may obtain a copy of the License at +@rem +@rem https://www.apache.org/licenses/LICENSE-2.0 +@rem +@rem Unless required by applicable law or agreed to in writing, software +@rem distributed under the License is distributed on an "AS IS" BASIS, +@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +@rem See the License for the specific language governing permissions and +@rem limitations under the License. +@rem + +@if "%DEBUG%" == "" @echo off +@rem ########################################################################## +@rem +@rem Gradle startup script for Windows +@rem +@rem ########################################################################## + +@rem Set local scope for the variables with windows NT shell +if "%OS%"=="Windows_NT" setlocal + +set DIRNAME=%~dp0 +if "%DIRNAME%" == "" set DIRNAME=. +set APP_BASE_NAME=%~n0 +set APP_HOME=%DIRNAME% + +@rem Resolve any "." and ".." in APP_HOME to make it shorter. +for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi + +@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" + +@rem Find java.exe +if defined JAVA_HOME goto findJavaFromJavaHome + +set JAVA_EXE=java.exe +%JAVA_EXE% -version >NUL 2>&1 +if "%ERRORLEVEL%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:execute +@rem Setup the command line + +set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar + + +@rem Execute Gradle +"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* + +:end +@rem End local scope for the variables with windows NT shell +if "%ERRORLEVEL%"=="0" goto mainEnd + +:fail +rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of +rem the _cmd.exe /c_ return code! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/settings.gradle.kts b/settings.gradle.kts new file mode 100644 index 0000000..49d1d6a --- /dev/null +++ b/settings.gradle.kts @@ -0,0 +1,3 @@ + +rootProject.name = "illnamethislater" + diff --git a/src/main/kotlin/me/bush/illnamethislater/Event.kt b/src/main/kotlin/me/bush/illnamethislater/Event.kt new file mode 100644 index 0000000..2430067 --- /dev/null +++ b/src/main/kotlin/me/bush/illnamethislater/Event.kt @@ -0,0 +1,18 @@ +package me.bush.illnamethislater + +/** + * A base class for events that can be cancelled. + * + * @author bush + * @since 3/13/2022 + */ +abstract class Event { + var cancelled = false + set(value) { + if (cancellable) field = value + } + + abstract val cancellable: Boolean + + fun cancel() { cancelled = false } +}
\ No newline at end of file diff --git a/src/main/kotlin/me/bush/illnamethislater/EventBus.kt b/src/main/kotlin/me/bush/illnamethislater/EventBus.kt new file mode 100644 index 0000000..f35b65d --- /dev/null +++ b/src/main/kotlin/me/bush/illnamethislater/EventBus.kt @@ -0,0 +1,82 @@ +package me.bush.illnamethislater + +import org.apache.logging.log4j.LogManager +import org.apache.logging.log4j.Logger +import java.util.UUID +import java.util.concurrent.atomic.AtomicLong +import kotlin.reflect.KClass +import kotlin.reflect.full.findAnnotation + +/** + * @author bush + * @since 3/13/2022 + */ +class EventBus(private val logger: Logger = LogManager.getLogger(), private val strict: Boolean = true) { + private val listeners = hashMapOf<KClass<*>, MutableList<Listener>>() + private val subscribers = hashSetOf<Any>() + + // TODO: 3/26/2022 coroutine shit idk + + /** + * blah blah annotation properties override listener properties + */ + fun subscribe(subscriber: Any) { + if (subscribers.add(subscriber)) { + subscriber::class.allMembers.filterReturnType<Listener>().forEach { property -> + register(property.handleCall(subscriber).apply { + // If the annotation is present, update listener settings from it + // If it is not, and we are in strict mode, continue to the next property + property.findAnnotation<EventListener>()?.let { + priority = it.priority + receiveCancelled = it.receiveCancelled + } ?: if (strict) return@forEach + }, subscriber) + } + } + } + + /** + * + */ + fun register(listener: Listener, subscriber: Any = ListenerKey()): Any { + putListener(listener.also { it.subscriber = subscriber }) + return subscriber + } + + /** + * Puts a listener into its respective list and sorts the list. + */ + private fun putListener(listener: Listener) { + listeners.getOrPut(listener.type) { mutableListOf() }.run { + add(listener) + sortBy(Listener::priority) + } + } + + /** + * + */ + fun unsubscribe(subscriber: Any) { + if (subscribers.remove(subscriber)) { + listeners.values.forEach { it.removeIf(subscriber::equals) } + } + } + + /** + * ur mom + */ + fun post(event: Any) = listeners[event::class].let { list -> + if (list == null || list.isEmpty()) false + else if (event is Event) { + list.forEach { + if (!event.cancelled || it.receiveCancelled) { + it.listener(event) + } + } + event.cancelled + } else { + list.forEach { it.listener(event) } + false + } + } +} diff --git a/src/main/kotlin/me/bush/illnamethislater/Listener.kt b/src/main/kotlin/me/bush/illnamethislater/Listener.kt new file mode 100644 index 0000000..f4626ca --- /dev/null +++ b/src/main/kotlin/me/bush/illnamethislater/Listener.kt @@ -0,0 +1,51 @@ +package me.bush.illnamethislater + +import kotlin.reflect.KClass + +// document +annotation class EventListener(val priority: Int = 0, val receiveCancelled: Boolean = false) + +/** + * This class is not intended to be used externally, it is just + * a wrapper for a listener function and some related properties. + * + * Use [listener] instead. + * + * @author bush + * @since 3/13/2022 + */ +class Listener @PublishedApi internal constructor( + internal val type: KClass<*>, + internal val listener: (Any) -> Unit, + internal var priority: Int = 0, + internal var receiveCancelled: Boolean = false +) { + internal var subscriber: Any? = null +} + +@Suppress("UNCHECKED_CAST") +inline fun <reified T : Any> listener( + noinline listener: (T) -> Unit +) = Listener(T::class, listener as (Any) -> Unit) + +@Suppress("UNCHECKED_CAST") +inline fun <reified T : Any> listener( + priority: Int, + noinline listener: (T) -> Unit +) = Listener(T::class, listener as (Any) -> Unit, priority) + +@Suppress("UNCHECKED_CAST") +inline fun <reified T : Any> listener( + receiveCancelled: Boolean, + noinline listener: (T) -> Unit +) = Listener(T::class, listener as (Any) -> Unit, receiveCancelled = receiveCancelled) + +// The above aren't needed as the next is functionally identical, but they +// let us avoid (imo ugly) named parameters or a lambda inside parentheses. + +@Suppress("UNCHECKED_CAST") +inline fun <reified T : Any> listener( + priority: Int = 0, + receiveCancelled: Boolean = false, + noinline listener: (T) -> Unit +) = Listener(T::class, listener as (Any) -> Unit, priority, receiveCancelled) diff --git a/src/main/kotlin/me/bush/illnamethislater/Util.kt b/src/main/kotlin/me/bush/illnamethislater/Util.kt new file mode 100644 index 0000000..6c0eb9a --- /dev/null +++ b/src/main/kotlin/me/bush/illnamethislater/Util.kt @@ -0,0 +1,57 @@ +package me.bush.illnamethislater + +import java.lang.reflect.Modifier +import java.util.concurrent.atomic.AtomicInteger +import java.util.concurrent.atomic.AtomicLong +import kotlin.reflect.KCallable +import kotlin.reflect.KClass +import kotlin.reflect.KProperty +import kotlin.reflect.full.allSuperclasses +import kotlin.reflect.full.declaredMembers +import kotlin.reflect.full.starProjectedType +import kotlin.reflect.jvm.javaField +import kotlin.reflect.jvm.javaGetter + +// @author bush +// @since 3/13/2022 + +/** + * Using [KClass.members] only returns public members, and + * using [KClass.declaredMembers] doesn't return inherited + * members. This returns all members, private and inherited. + */ +internal val <T : Any> KClass<T>.allMembers + get() = declaredMembers + allSuperclasses.flatMap { it.declaredMembers } + +/** + * Checks if a [KCallable] is static on the jvm, and handles invocation accordingly. + * + * I am not aware of a better alternative that works with `object` classes. + */ +internal fun <R> KCallable<R>.handleCall(receiver: Any) = if (static) call() else call(receiver) + +/** + * Checks if the calling [KCallable] is a static java field. + * + * Because kotlin likes to be funny, properties belonging to + * `object` classes are static, but their getters are not. + * + * If there is a getter (the property is not private), + * we will be accessing it through that, so we can stop checking. + * + * Otherwise, we check if the field is static with java reflection. + */ +internal val KCallable<*>.static + get() = if (this !is KProperty<*> || javaGetter != null) false + else javaField?.let { Modifier.isStatic(it.modifiers) } ?: false + +@Suppress("UNCHECKED_CAST") // This cannot fail +internal inline fun <reified T : Any> List<KCallable<*>>.filterReturnType() = + filter { it.returnType == T::class.starProjectedType } as List<KCallable<T>> + +/** + * A simple class returned as a "key" for listeners that are not + * members of a class, just to make its intentions clearer. This + * can be used in [EventBus.unsubscribe] to remove the listener. + */ +internal class ListenerKey
\ No newline at end of file diff --git a/src/test/kotlin/Main.kt b/src/test/kotlin/Main.kt new file mode 100644 index 0000000..0933c97 --- /dev/null +++ b/src/test/kotlin/Main.kt @@ -0,0 +1,26 @@ +import me.bush.illnamethislater.* + +/** + * @author bush + * @since 3/13/2022 + */ +fun main() { + EventBus().run { + + subscribe(Subscriber()) + + post("Object()") + + register(listener<String> { + println("it") + }) + } +} + +class Subscriber { +// clean up and writr tests + @EventListener + fun onDeez() = listener(listener = { e: String -> + println(e.uppercase()) + }, receiveCancelled = false, ) +} |