Merge remote-tracking branch 'origin/master'

# Conflicts:
#	rt/src/main/java/edu/kit/iti/formal/psdbg/interpreter/dbg/Breakpoint.java
#	ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controller/DebuggerMain.java
#	ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/ProofTree.java

.gitlab-ci.yml

 image: key-ant-openjdk-8:latest
 
-
-
-
 cache:
   paths:
     - .m2/
 
 variables:
-  MAVEN_OPTS: -Dmaven.repo.local=${CI_PROJECT_DIR}/.m2
+  MAVEN_OPTS: >-
+    -Dmaven.repo.local=${CI_PROJECT_DIR}/.m2
+    -Dorg.slf4j.simpleLogger.log.org.apache.maven.cli.transfer.Slf4jMavenTransferListener=WARN
+    -Dorg.slf4j.simpleLogger.showDateTime=true
   GIT_SSL_NO_VERIFY: "true"
 
-  
+stages:
+  - setup
+  - build
+  - test
+  - deploy
+
+setup:
+  stage: setup
+  script:
+    - COMPONENTS=keydeps/lib/components/
+    - GID=key-project-psdbg
+    - V=2.7-SNAPSHOT
+    - mvn install:install-file -Dfile=$COMPONENTS/key.core.jar -DartifactId=key.core  -DgroupId=$GID -Dversion=$V -Dpackaging=jar
+    - mvn install:install-file -Dfile=$COMPONENTS/key.ui.jar -DartifactId=key.ui -DgroupId=$GID -Dversion=$V -Dpackaging=jar
+    - mvn install:install-file -Dfile=$COMPONENTS/key.util.jar -DartifactId=key.util -DgroupId=$GID -Dversion=$V -Dpackaging=jar
+    - mvn install:install-file -Dfile=$COMPONENTS/../libs/recoderKey.jar -DartifactId=recoder  -DgroupId=$GID -Dversion=2.7 -Dpackaging=jar
 
 build:
+  stage: build
   script: "mvn compile -B -T 2"
 
-
-test: 
+test:
+  stage: test
   script: "mvn test -B"
 
 deploy:
+  stage: deploy
   script: 
-    - "mvn package site:site -DperformRelease=true -DcreateChecksum=true -DskipTests=true -B"
+    - "mvn package -DperformRelease=true -DcreateChecksum=true -DskipTests=true -B"
   artifacts: 
     paths:
-      - target/*jar
-      - target/site/*
+      - "*/target/*.jar"
+  allow_failure: true
+
+site:
+  stage: deploy
+  script:
+    - "mvn site:site -DskipTests=true -B"
+  artifacts:
+    paths:
+      - "*/target/site/*"
   allow_failure: true
\ No newline at end of file

TempJars/key.core/2.7-SNAPSHOT/_remote.repositories

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Tue Sep 12 15:15:02 CEST 2017
-key.core-2.7-SNAPSHOT.jar>=
-key.core-2.7-SNAPSHOT.pom>=

TempJars/key.core/2.7-SNAPSHOT/key.core-2.7-SNAPSHOT.pom

-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.core</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <description>POM was created from install:install-file</description>
-</project>

TempJars/key.core/2.7-SNAPSHOT/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata modelVersion="1.1.0">
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.core</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <versioning>
-    <snapshot>
-      <localCopy>true</localCopy>
-    </snapshot>
-    <lastUpdated>20170912131502</lastUpdated>
-    <snapshotVersions>
-      <snapshotVersion>
-        <extension>jar</extension>
-        <value>2.7-SNAPSHOT</value>
-        <updated>20170912131502</updated>
-      </snapshotVersion>
-      <snapshotVersion>
-        <extension>pom</extension>
-        <value>2.7-SNAPSHOT</value>
-        <updated>20170912103035</updated>
-      </snapshotVersion>
-    </snapshotVersions>
-  </versioning>
-</metadata>

TempJars/key.core/2.7-SNAPSHOT/resolver-status.properties

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Thu Oct 05 13:51:55 CEST 2017
-maven-metadata-local-repo.xml.lastUpdated=1507204315285
-maven-metadata-local-repo.xml.error=

TempJars/key.core/2.7/key.core-2.7.pom.lastUpdated

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Thu Oct 05 13:55:20 CEST 2017
-@default-local-repo-file\:///${basedir}/local-repo/.lastUpdated=1507204520445
-file\:///${basedir}/local-repo/.error=Could not transfer artifact key-project-psdbg\:key.core\:pom\:2.7 from/to local-repo (file\:///${basedir}/local-repo)\: Repository path /${basedir}/local-repo does not exist, and cannot be created.
-@default-central-https\://repo.maven.apache.org/maven2/.lastUpdated=1507204520431
-https\://repo.maven.apache.org/maven2/.error=Could not transfer artifact key-project-psdbg\:key.core\:pom\:2.7 from/to central (https\://repo.maven.apache.org/maven2)\: Connect to repo.maven.apache.org\:443 [repo.maven.apache.org/151.101.120.215] failed\: Connection timed out (Connection timed out)

TempJars/key.core/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.core</artifactId>
-  <versioning>
-    <versions>
-      <version>2.7-SNAPSHOT</version>
-    </versions>
-    <lastUpdated>20170912131502</lastUpdated>
-  </versioning>
-</metadata>

TempJars/key.ui/2.7-SNAPSHOT/_remote.repositories

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Tue Sep 12 15:15:04 CEST 2017
-key.ui-2.7-SNAPSHOT.jar>=
-key.ui-2.7-SNAPSHOT.pom>=

TempJars/key.ui/2.7-SNAPSHOT/key.ui-2.7-SNAPSHOT.pom

-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.ui</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <description>POM was created from install:install-file</description>
-</project>

TempJars/key.ui/2.7-SNAPSHOT/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata modelVersion="1.1.0">
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.ui</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <versioning>
-    <snapshot>
-      <localCopy>true</localCopy>
-    </snapshot>
-    <lastUpdated>20170912131504</lastUpdated>
-    <snapshotVersions>
-      <snapshotVersion>
-        <extension>jar</extension>
-        <value>2.7-SNAPSHOT</value>
-        <updated>20170912131504</updated>
-      </snapshotVersion>
-      <snapshotVersion>
-        <extension>pom</extension>
-        <value>2.7-SNAPSHOT</value>
-        <updated>20170912103037</updated>
-      </snapshotVersion>
-    </snapshotVersions>
-  </versioning>
-</metadata>

TempJars/key.ui/2.7-SNAPSHOT/resolver-status.properties

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Thu Oct 05 13:51:55 CEST 2017
-maven-metadata-local-repo.xml.lastUpdated=1507204315300
-maven-metadata-local-repo.xml.error=

TempJars/key.ui/2.7/key.ui-2.7.pom.lastUpdated

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Thu Oct 05 13:57:27 CEST 2017
-@default-local-repo-file\:///${basedir}/local-repo/.lastUpdated=1507204647790
-file\:///${basedir}/local-repo/.error=Could not transfer artifact key-project-psdbg\:key.ui\:pom\:2.7 from/to local-repo (file\:///${basedir}/local-repo)\: Repository path /${basedir}/local-repo does not exist, and cannot be created.
-@default-central-https\://repo.maven.apache.org/maven2/.lastUpdated=1507204647788
-https\://repo.maven.apache.org/maven2/.error=Could not transfer artifact key-project-psdbg\:key.ui\:pom\:2.7 from/to central (https\://repo.maven.apache.org/maven2)\: Connect to repo.maven.apache.org\:443 [repo.maven.apache.org/151.101.120.215] failed\: Connection timed out (Connection timed out)

TempJars/key.ui/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.ui</artifactId>
-  <versioning>
-    <versions>
-      <version>2.7-SNAPSHOT</version>
-    </versions>
-    <lastUpdated>20170912131504</lastUpdated>
-  </versioning>
-</metadata>

TempJars/key.util/2.7-SNAPSHOT/_remote.repositories

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Tue Sep 12 15:15:07 CEST 2017
-key.util-2.7-SNAPSHOT.jar>=
-key.util-2.7-SNAPSHOT.pom>=

TempJars/key.util/2.7-SNAPSHOT/key.util-2.7-SNAPSHOT.pom

-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.util</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <description>POM was created from install:install-file</description>
-</project>

TempJars/key.util/2.7-SNAPSHOT/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata modelVersion="1.1.0">
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.util</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <versioning>
-    <snapshot>
-      <localCopy>true</localCopy>
-    </snapshot>
-    <lastUpdated>20170912131507</lastUpdated>
-    <snapshotVersions>
-      <snapshotVersion>
-        <extension>jar</extension>
-        <value>2.7-SNAPSHOT</value>
-        <updated>20170912131507</updated>
-      </snapshotVersion>
-      <snapshotVersion>
-        <extension>pom</extension>
-        <value>2.7-SNAPSHOT</value>
-        <updated>20170912103039</updated>
-      </snapshotVersion>
-    </snapshotVersions>
-  </versioning>
-</metadata>

TempJars/key.util/2.7-SNAPSHOT/resolver-status.properties

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Thu Oct 05 13:51:55 CEST 2017
-maven-metadata-local-repo.xml.lastUpdated=1507204315304
-maven-metadata-local-repo.xml.error=

TempJars/key.util/2.7/key.util-2.7.pom.lastUpdated

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Thu Oct 05 13:59:35 CEST 2017
-@default-local-repo-file\:///${basedir}/local-repo/.lastUpdated=1507204775151
-file\:///${basedir}/local-repo/.error=Could not transfer artifact key-project-psdbg\:key.util\:pom\:2.7 from/to local-repo (file\:///${basedir}/local-repo)\: Repository path /${basedir}/local-repo does not exist, and cannot be created.
-@default-central-https\://repo.maven.apache.org/maven2/.lastUpdated=1507204775148
-https\://repo.maven.apache.org/maven2/.error=Could not transfer artifact key-project-psdbg\:key.util\:pom\:2.7 from/to central (https\://repo.maven.apache.org/maven2)\: Connect to repo.maven.apache.org\:443 [repo.maven.apache.org/151.101.120.215] failed\: Connection timed out (Connection timed out)

TempJars/key.util/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.util</artifactId>
-  <versioning>
-    <versions>
-      <version>2.7-SNAPSHOT</version>
-    </versions>
-    <lastUpdated>20170912131507</lastUpdated>
-  </versioning>
-</metadata>

TempJars/recoder/2.7/_remote.repositories

-#NOTE: This is an Aether internal implementation file, its format can be changed without prior notice.
-#Tue Sep 12 15:15:11 CEST 2017
-recoder-2.7.jar>=
-recoder-2.7.pom>=

TempJars/recoder/2.7/recoder-2.7.pom

-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>recoder</artifactId>
-  <version>2.7</version>
-  <description>POM was created from install:install-file</description>
-</project>

TempJars/recoder/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>recoder</artifactId>
-  <versioning>
-    <release>2.7</release>
-    <versions>
-      <version>2.7</version>
-    </versions>
-    <lastUpdated>20170912131511</lastUpdated>
-  </versioning>
-</metadata>

keydeps/README.user

+#!/bin/bash -x
+
+
 # Execute this in this folder.
 
 # Set to key/key/deployment/components/
-COMPONENTS=${COMPONENTS:-/home/sarah/Documents/KIT_Mitarbeiter/KeYDevelopment/KeYGitDir/key/key/deployment/components/}
+#COMPONENTS=${COMPONENTS:-/home/sarah/Documents/KIT_Mitarbeiter/KeYDevelopment/KeYGitDir/key/key/deployment/components/}
+#COMPONENTS=$HOME/work/key/key/deployment/components/
+COMPONENTS=lib/components/
+
 
 
 mvn install:install-file -Dfile=$COMPONENTS/key.core.jar \

keydeps/local-repo/key-project-psdbg/key.core/2.7-SNAPSHOT/key.core-2.7-SNAPSHOT.pom

-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.core</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <description>POM was created from install:install-file</description>
-</project>

keydeps/local-repo/key-project-psdbg/key.core/2.7-SNAPSHOT/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata modelVersion="1.1.0">
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.core</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <versioning>
-    <snapshot>
-      <localCopy>true</localCopy>
-    </snapshot>
-      <lastUpdated>20170912105152</lastUpdated>
-    <snapshotVersions>
-      <snapshotVersion>
-        <extension>jar</extension>
-        <value>2.7-SNAPSHOT</value>
-          <updated>20170912105152</updated>
-      </snapshotVersion>
-      <snapshotVersion>
-        <extension>pom</extension>
-        <value>2.7-SNAPSHOT</value>
-          <updated>20170912103022</updated>
-      </snapshotVersion>
-    </snapshotVersions>
-  </versioning>
-</metadata>

keydeps/local-repo/key-project-psdbg/key.core/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.core</artifactId>
-  <versioning>
-    <versions>
-      <version>2.7-SNAPSHOT</version>
-    </versions>
-      <lastUpdated>20170912105152</lastUpdated>
-  </versioning>
-</metadata>

keydeps/local-repo/key-project-psdbg/key.ui/2.7-SNAPSHOT/key.ui-2.7-SNAPSHOT.pom

-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.ui</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <description>POM was created from install:install-file</description>
-</project>

keydeps/local-repo/key-project-psdbg/key.ui/2.7-SNAPSHOT/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata modelVersion="1.1.0">
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.ui</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <versioning>
-    <snapshot>
-      <localCopy>true</localCopy>
-    </snapshot>
-      <lastUpdated>20170912105155</lastUpdated>
-    <snapshotVersions>
-      <snapshotVersion>
-        <extension>jar</extension>
-        <value>2.7-SNAPSHOT</value>
-          <updated>20170912105155</updated>
-      </snapshotVersion>
-      <snapshotVersion>
-        <extension>pom</extension>
-        <value>2.7-SNAPSHOT</value>
-          <updated>20170912103024</updated>
-      </snapshotVersion>
-    </snapshotVersions>
-  </versioning>
-</metadata>

keydeps/local-repo/key-project-psdbg/key.ui/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.ui</artifactId>
-  <versioning>
-    <versions>
-      <version>2.7-SNAPSHOT</version>
-    </versions>
-      <lastUpdated>20170912105155</lastUpdated>
-  </versioning>
-</metadata>

keydeps/local-repo/key-project-psdbg/key.util/2.7-SNAPSHOT/key.util-2.7-SNAPSHOT.pom

-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.util</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <description>POM was created from install:install-file</description>
-</project>

keydeps/local-repo/key-project-psdbg/key.util/2.7-SNAPSHOT/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata modelVersion="1.1.0">
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.util</artifactId>
-  <version>2.7-SNAPSHOT</version>
-  <versioning>
-    <snapshot>
-      <localCopy>true</localCopy>
-    </snapshot>
-      <lastUpdated>20170912105158</lastUpdated>
-    <snapshotVersions>
-      <snapshotVersion>
-        <extension>jar</extension>
-        <value>2.7-SNAPSHOT</value>
-          <updated>20170912105158</updated>
-      </snapshotVersion>
-      <snapshotVersion>
-        <extension>pom</extension>
-        <value>2.7-SNAPSHOT</value>
-          <updated>20170912103027</updated>
-      </snapshotVersion>
-    </snapshotVersions>
-  </versioning>
-</metadata>

keydeps/local-repo/key-project-psdbg/key.util/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>key.util</artifactId>
-  <versioning>
-    <versions>
-      <version>2.7-SNAPSHOT</version>
-    </versions>
-      <lastUpdated>20170912105158</lastUpdated>
-  </versioning>
-</metadata>

keydeps/local-repo/key-project-psdbg/recoder/2.7/recoder-2.7.pom

-<?xml version="1.0" encoding="UTF-8"?>
-<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
-  <modelVersion>4.0.0</modelVersion>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>recoder</artifactId>
-  <version>2.7</version>
-  <description>POM was created from install:install-file</description>
-</project>

keydeps/local-repo/key-project-psdbg/recoder/maven-metadata-local.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<metadata>
-  <groupId>key-project-psdbg</groupId>
-  <artifactId>recoder</artifactId>
-  <versioning>
-    <release>2.7</release>
-    <versions>
-      <version>2.7</version>
-    </versions>
-      <lastUpdated>20170912105201</lastUpdated>
-  </versioning>
-</metadata>

keydeps/src/main/java/gendoc.groovy

-

lang/src/main/antlr4/edu/kit/iti/formal/psdbg/parser/ScriptLanguage.g4

@@ -116,12 +116,12 @@ casesStmt
 casesList
     :    (TRY |
             (CASE  (expression
-                | (CLOSES  INDENT closesScript=stmtList DEDENT) ) ) )
+                | (CLOSES  INDENT closesGuard=stmtList DEDENT) ) ) )
                 COLON INDENT? body=stmtList DEDENT?
     ;
 
 /*closesExpression
-    : CLOSES  INDENT closesScript=stmtList DEDENT
+    : CLOSES  INDENT closesGuard=stmtList DEDENT
     ;*/
 
 forEachStmt

lang/src/main/java/edu/kit/iti/formal/psdbg/ShortCommandPrinter.java

+package edu.kit.iti.formal.psdbg;
+
+import edu.kit.iti.formal.psdbg.parser.DefaultASTVisitor;
+import edu.kit.iti.formal.psdbg.parser.Facade;
+import edu.kit.iti.formal.psdbg.parser.ast.*;
+
+/**
+ * Prints every command to a single line representation.
+ *
+ * @author Alexander Weigl
+ * @version 1
+ */
+public class ShortCommandPrinter extends DefaultASTVisitor<String> {
+    @Override
+    public String defaultVisit(ASTNode node) {
+        return (Facade.prettyPrint(node));
+    }
+
+    @Override
+    public String visit(Statements statements) {
+        return "{ ... " + statements.size() + " ... }";
+    }
+
+    @Override
+    public String visit(ProofScript proofScript) {
+        return String.format("script %s (%s) {%n",
+                proofScript.getName(),
+                Facade.prettyPrint(proofScript.getSignature()));
+    }
+
+    @Override
+    public String visit(CasesStatement casesStatement) {
+        return "cases {";
+    }
+
+    @Override
+    public String visit(GuardedCaseStatement caseStatement) {
+        return "case " + Facade.prettyPrint(caseStatement.getGuard());
+    }
+
+    @Override
+    public String visit(TryCase tryCase) {
+        return "try " + Facade.prettyPrint(tryCase.getBody());
+    }
+
+    @Override
+    public String visit(ClosesCase closesCase) {
+        return "closes with {" + Facade.prettyPrint(closesCase.getClosesGuard()) + "}";
+    }
+
+    @Override
+    public String visit(TheOnlyStatement theOnly) {
+        return "theonly {";
+    }
+
+    @Override
+    public String visit(ForeachStatement foreach) {
+        return "foreach {";
+    }
+
+    @Override
+    public String visit(RepeatStatement repeatStatement) {
+        return ("repeat {");
+    }
+}

lang/src/main/java/edu/kit/iti/formal/psdbg/parser/ASTChanger.java

@@ -118,15 +118,15 @@ public class ASTChanger extends DefaultASTVisitor<ASTNode> {
     }
 
     @Override
-    public SimpleCaseStatement visit(SimpleCaseStatement simpleCaseStatement) {
-        simpleCaseStatement.getGuard().accept(this);
-        simpleCaseStatement.getBody().accept(this);
-        return simpleCaseStatement;
+    public GuardedCaseStatement visit(GuardedCaseStatement guardedCaseStatement) {
+        guardedCaseStatement.getGuard().accept(this);
+        guardedCaseStatement.getBody().accept(this);
+        return guardedCaseStatement;
     }
 
     @Override
     public ASTNode visit(ClosesCase closesCase) {
-        closesCase.getClosesScript().accept(this);
+        closesCase.getClosesGuard().accept(this);
         closesCase.getBody().accept(this);
         return closesCase;
     }

lang/src/main/java/edu/kit/iti/formal/psdbg/parser/ASTDiff.java

+package edu.kit.iti.formal.psdbg.parser;
+
+import edu.kit.iti.formal.psdbg.parser.ast.*;
+
+public class ASTDiff implements Visitor<ASTNode> {
+    private ASTNode other;
+
+    private ProofScript newScript;
+
+    @Override
+    public ProofScript visit(ProofScript proofScript) {
+        newScript = new ProofScript();
+        newScript.setName(proofScript.getName());
+        newScript.setSignature(proofScript.getSignature());
+
+        other = ((ProofScript) other).getBody();
+        newScript.setBody(visit(newScript.getBody()));
+        return newScript;
+    }
+
+    @Override
+    public ASTNode visit(AssignmentStatement assign) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(BinaryExpression e) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(MatchExpression match) {
+        return null;