*

.gitignore

+*.jar
+!gradle/wrapper/gradle-wrapper.jar
+!libs/*.jar
+.project
+.classpath
+.idea/
+.gradle/
+/build/
+/src/gen
+/src/gen-res

build.gradle

+buildscript {
+    repositories.jcenter()
+    dependencies {
+        classpath 'org.jastadd:jastaddgradle:1.13.3'
+    }
+}
+
+plugins {
+    id 'java'
+    id 'idea'
+    id 'application'
+}
+
+apply plugin: 'jastadd'
+
+mainClassName = 'de.tudresden.inf.st.mrc.MinimalMain'
+
+repositories {
+    jcenter()
+}
+
+apply plugin: 'jastadd'
+
+configurations {
+    baseRuntimeClasspath
+}
+
+File genSrc = file("src/gen/java")
+sourceSets.main.java.srcDir genSrc
+idea.module.generatedSourceDirs += genSrc
+
+dependencies {
+    implementation fileTree(include: ['dumpAst2uml.jar'], dir: 'libs')
+    implementation group: 'org.fusesource.mqtt-client', name: 'mqtt-client', version: '1.15'
+    implementation group: 'org.apache.logging.log4j', name: 'log4j-api', version: '2.11.2'
+    implementation group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.11.2'
+
+    jastadd2 "org.jastadd:jastadd:2.3.4"
+}
+
+// Input files for relast
+def relastFiles = ["src/gen/jastadd/MinimalModel.relast", "src/gen/jastadd/RagConnect.relast"]
+
+// phases: ragConnect -> RelAst -> JastAdd
+// phase: ragConnect
+task ragConnect(type: JavaExec) {
+    group = 'Build'
+    main = '-jar'
+
+    args([
+            'libs/ragconnect.jar',
+            '--verbose',
+            '--o=src/gen/jastadd',
+            'src/main/jastadd/MinimalModel.relast',
+            'src/main/jastadd/MinimalModel.connect',
+            '--rootNode=MinimalModel'
+    ])
+}
+
+// phase: RelAst
+task relastToJastAdd(type: JavaExec) {
+    group = 'Build'
+    main = "-jar"
+
+    args(["libs/relast.jar",
+            "--grammarName=./src/gen/jastadd/model",
+            "--useJastAddNames",
+            "--listClass=java.util.ArrayList",
+            "--jastAddList=JastAddList",
+            "--resolverHelper",
+            "--file"]
+    +
+            relastFiles)
+
+    inputs.files relastFiles
+    outputs.files file("./src/gen/jastadd/model.ast"), file("./src/gen/jastadd/model.jadd")
+}
+
+// phase: JastAdd
+jastadd {
+    configureModuleBuild()
+    modules {
+        //noinspection GroovyAssignabilityCheck
+        module("minimal") {
+
+            java {
+                basedir "src/"
+                include "main/**/*.java"
+                include "gen/**/*.java"
+            }
+
+            jastadd {
+                basedir "src/"
+                include "main/jastadd/**/*.ast"
+                include "main/jastadd/**/*.jadd"
+                include "main/jastadd/**/*.jrag"
+                include "gen/jastadd/**/*.ast"
+                include "gen/jastadd/**/*.jadd"
+                include "gen/jastadd/**/*.jrag"
+            }
+        }
+    }
+
+    cleanGen.doFirst {
+        delete "src/gen/java/org"
+        delete "src/gen-res/BuildInfo.properties"
+    }
+
+    preprocessParser.doFirst {
+
+        args += ["--no-beaver-symbol"]
+
+    }
+
+    module = "minimal"
+
+    astPackage = 'de.tudresden.inf.st.mrc.ast'
+
+    genDir = 'src/gen/java'
+
+    buildInfoDir = 'src/gen-res'
+
+    // jastaddOptions = ["--lineColumnNumbers", "--visitCheck=true", "--rewrite=cnta", "--cache=all"]
+    // default options are: '--rewrite=cnta', '--safeLazy', '--visitCheck=false', '--cacheCycle=false'
+    extraJastAddOptions = ["--lineColumnNumbers", '--List=JastAddList']
+}
+
+// Workflow configuration for phases
+generateAst.dependsOn relastToJastAdd
+relastToJastAdd.dependsOn ragConnect

gradle/wrapper/gradle-wrapper.properties

+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

+#!/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 "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$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`="\"$arg\""
+        fi
+        i=$((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" "$@"

gradlew.bat

+@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 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 init
+
+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 init
+
+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
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+: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 %CMD_LINE_ARGS%
+
+: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

src/main/jastadd/MinimalModel.connect

+receive A.Input ;
+send A.OutputOnA ;
+send B.OutputOnB using Transformation ;
+
+// mapping definitions
+Transformation maps String s to String {:
+  return s + "postfix";
+:}
+
+// dependency definitions
+A.OutputOnA canDependOn A.Input as dependencyA ;
+B.OutputOnB canDependOn A.Input as dependencyB ;

src/main/jastadd/MinimalModel.jrag

+aspect Computation {
+  syn String A.getOutputOnA() = "a" + getInput();
+
+  syn String B.getOutputOnB() = "b" + input();
+  inh String B.input();
+  eq A.getB().input() = getInput();
+}

src/main/jastadd/MinimalModel.relast

+MinimalModel ::= A ;
+A ::= <Input:String> /<OutputOnA:String>/ B* ;
+B ::= /<OutputOnB:String>/ ;

src/main/java/de/tudresden/inf/st/mrc/MinimalMain.java

+package de.tudresden.inf.st.mrc;
+
+import de.tudresden.inf.st.mrc.ast.A;
+import de.tudresden.inf.st.mrc.ast.B;
+import de.tudresden.inf.st.mrc.ast.MinimalModel;
+
+import java.io.IOException;
+
+/**
+ * Minimal main.
+ *
+ * @author rschoene - Initial contribution
+ */
+public class MinimalMain {
+  public static void main(String[] args) throws IOException {
+    MinimalModel model = new MinimalModel();
+    A a = new A();
+    // set some default value for input
+    a.setInput("");
+    B b1 = new B();
+    B b2 = new B();
+    a.addB(b1);
+    a.addB(b2);
+    model.setA(a);
+
+    // a.OutputOnA -> a.Input
+    a.addDependencyA(a);
+    // b1.OutputOnB -> a.Input
+    b1.addDependencyB(a);
+    // b2.OutputOnB -> a.Input
+    b2.addDependencyB(a);
+
+    a.connectInput("mqtt://localhost/topic/for/input");
+    a.connectOutputOnA("mqtt://localhost/a/out", true);
+    b1.connectOutputOnB("mqtt://localhost/b1/out", true);
+    b2.connectOutputOnB("mqtt://localhost/b2/out", false);
+
+    while (true) {}
+  }
+}

src/main/resources/log4j2.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="INFO">
+    <Appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
+        </Console>
+    </Appenders>
+    <Loggers>
+        <Root level="info">
+            <AppenderRef ref="Console"/>
+        </Root>
+    </Loggers>
+</Configuration>