Parser erweitern

src/de/dhbwstuttgart/parser/SyntaxTreeGenerator.java

@@ -1,24 +1,25 @@
 package de.dhbwstuttgart.parser;
 
-import com.sun.corba.se.spi.monitoring.StatisticMonitoredAttribute;
 import de.dhbwstuttgart.parser.antlr.Java8Parser;
 import de.dhbwstuttgart.syntaxtree.*;
 import de.dhbwstuttgart.syntaxtree.modifier.*;
 import de.dhbwstuttgart.syntaxtree.modifier.fieldModifier.*;
 import de.dhbwstuttgart.syntaxtree.modifier.methodModifier.MethodModifier;
+import de.dhbwstuttgart.syntaxtree.operator.AndOp;
+import de.dhbwstuttgart.syntaxtree.operator.Operator;
+import de.dhbwstuttgart.syntaxtree.operator.OrOp;
 import de.dhbwstuttgart.syntaxtree.statement.*;
 import de.dhbwstuttgart.syntaxtree.type.RefType;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
 import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
 import de.dhbwstuttgart.typecheck.*;
 import java.util.ArrayList;
-import java.util.Arrays;
+import java.util.Iterator;
 import java.util.List;
-import java.lang.ClassNotFoundException;
 
 import org.antlr.v4.runtime.Token;
+import org.antlr.v4.runtime.atn.SemanticContext;
 import org.antlr.v4.runtime.tree.TerminalNode;
-import org.antlr.v4.runtime.RecognitionException;
 
 import sun.reflect.generics.reflectiveObjects.NotImplementedException;
 
@@ -260,41 +261,6 @@ public class SyntaxTreeGenerator{
     return null;
   }
 
-  private Block convert(Java8Parser.BlockContext block) {
-    List<Statement> statements = new ArrayList<>();
-    if(block.blockStatements() != null)
-    for(Java8Parser.BlockStatementContext statementContext : block.blockStatements().blockStatement()){
-      List<Statement> stmt = convert(statementContext);
-      statements.addAll(stmt);
-    }
-
-    return new Block(statements, block.getStart());
-  }
-
-  private List<Statement> convert(Java8Parser.BlockStatementContext statementContext) {
-    List<Statement> ret = new ArrayList<>();
-    if(statementContext.localVariableDeclarationStatement() != null){
-      Java8Parser.LocalVariableDeclarationContext declaration = statementContext.localVariableDeclarationStatement().localVariableDeclaration();
-      RefTypeOrTPH type;
-      if(declaration.unannType()==null){
-        type = TypePlaceholder.fresh(declaration.getStart());
-      }else{
-        type = convert(declaration.unannType());
-      }
-      for(Java8Parser.VariableDeclaratorContext varDecl : declaration.variableDeclaratorList().variableDeclarator()){
-        TerminalNode name = varDecl.variableDeclaratorId().Identifier();
-        ret.add(new LocalVarDecl(name.getText(), type, name.getSymbol()));
-      }
-      return ret;
-    }else if(statementContext.classDeclaration() != null){
-      throw new NotImplementedException();
-    }else{
-      Java8Parser.StatementContext stmt = statementContext.statement();
-      ret.add(SyntaxTreeStatementGenerator.convert(stmt));
-      return ret;
-    }
-  }
-
   private ParameterList convert(Java8Parser.FormalParameterListContext formalParameterListContext) {
     List<FormalParameter> ret = new ArrayList<>();
     List<Java8Parser.FormalParameterContext> fps = new ArrayList<>();
@@ -375,7 +341,6 @@ public class SyntaxTreeGenerator{
     return new RefType(reg.getName(name), unannClassOrInterfaceTypeContext.getStart());
   }
 
-
   private Modifier convert(Java8Parser.ClassModifierContext ctx){
     Modifier newModifier = null;
     if(ctx.annotation() == null){
@@ -456,4 +421,544 @@ public class SyntaxTreeGenerator{
   private ClassOrInterface convertInterface(Java8Parser.InterfaceDeclarationContext ctx){
     return null;
   }
+
+  /*
+  * StatementGeneration:
+   */
+
+  public Statement convert(Java8Parser.StatementContext stmt) {
+    if (stmt.statementWithoutTrailingSubstatement() != null) {
+      return convert(stmt.statementWithoutTrailingSubstatement());
+    } else if (stmt.whileStatement() != null) {
+      return convert(stmt.whileStatement());
+    } else if (stmt.forStatement() != null) {
+      return convert(stmt.forStatement());
+    } else if (stmt.ifThenElseStatement() != null) {
+      return convert(stmt.ifThenElseStatement());
+    } else if (stmt.ifThenStatement() != null) {
+      return convert(stmt.ifThenStatement());
+    } else if (stmt.labeledStatement() != null) {
+      return convert(stmt.labeledStatement() );
+    }else throw new NotImplementedException();
+  }
+
+  private Statement convert(Java8Parser.StatementNoShortIfContext stmt){
+    if(stmt.statementWithoutTrailingSubstatement() != null){
+      return convert(stmt.statementWithoutTrailingSubstatement());
+    }else if(stmt.labeledStatementNoShortIf() != null){
+      return convert(stmt.labeledStatementNoShortIf());
+    }else if(stmt.ifThenElseStatementNoShortIf() != null){
+      return convert(stmt.ifThenElseStatementNoShortIf());
+    }else if(stmt.whileStatementNoShortIf() != null){
+      return convert(stmt.whileStatementNoShortIf());
+    }else if(stmt.forStatementNoShortIf() != null){
+      return convert(stmt.forStatementNoShortIf());
+    }else throw new NotImplementedException();
+  }
+
+  private Statement convert(Java8Parser.StatementWithoutTrailingSubstatementContext stmt) {
+    if(stmt.block() != null){
+      return convert(stmt.block());
+    }else if(stmt.emptyStatement() != null){
+      return new EmptyStmt();
+    }else if(stmt.expressionStatement() != null){
+      return convert(stmt.expressionStatement());
+    }else if(stmt.assertStatement() != null){
+      return convert(stmt.assertStatement());
+    }else if(stmt.switchStatement() != null){
+      return convert(stmt.switchStatement());
+    }else if(stmt.doStatement() != null){
+      return convert(stmt.doStatement());
+    }else if(stmt.breakStatement() != null){
+      return convert(stmt.breakStatement());
+    }else if(stmt.continueStatement() != null){
+      return convert(stmt.continueStatement());
+    }else if(stmt.returnStatement() != null){
+      return convert(stmt.returnStatement());
+    }else if(stmt.synchronizedStatement() != null){
+      return convert(stmt.synchronizedStatement());
+    }else if(stmt.throwStatement() != null){
+      return convert(stmt.throwStatement());
+    }else if(stmt.tryStatement() != null){
+      return convert(stmt.tryStatement());
+    }else throw new NotImplementedException();
+  }
+
+  private Block convert(Java8Parser.BlockContext block) {
+    List<de.dhbwstuttgart.syntaxtree.statement.Statement> statements = new ArrayList<>();
+    if(block.blockStatements() != null)
+      for(Java8Parser.BlockStatementContext statementContext : block.blockStatements().blockStatement()){
+        Statement stmt = convert(statementContext);
+        statements.add(stmt);
+      }
+
+    return new Block(statements, block.getStart());
+  }
+
+  private de.dhbwstuttgart.syntaxtree.statement.Statement convert(Java8Parser.BlockStatementContext statementContext) {
+    List<de.dhbwstuttgart.syntaxtree.statement.Statement> ret = new ArrayList<>();
+    if(statementContext.localVariableDeclarationStatement() != null){
+      return convert(statementContext.localVariableDeclarationStatement());
+    }else if(statementContext.classDeclaration() != null){
+      throw new NotImplementedException();
+    }else{
+      Java8Parser.StatementContext stmt = statementContext.statement();
+      return convert(stmt);
+    }
+  }
+
+  private Statement convert(Java8Parser.LocalVariableDeclarationStatementContext stmt) {
+    Java8Parser.LocalVariableDeclarationContext declaration = stmt.localVariableDeclaration();
+    return convert(declaration);
+  }
+
+  private static Statement convert(Java8Parser.LabeledStatementContext labeledStatementContext) {
+    throw new NotImplementedException();
+    //return convert(labeledStatementContext.statement());
+  }
+
+  private static Statement convert(Java8Parser.LabeledStatementNoShortIfContext stmt){
+    throw new NotImplementedException();
+    //return convert(stmt.statementNoShortIf());
+  }
+
+  private static Statement convert(Java8Parser.ExpressionStatementContext stmt){
+    return convert(stmt.statementExpression());
+  }
+
+  private static Statement convert(Java8Parser.StatementExpressionContext stmt) {
+    if(stmt.assignment() != null){
+      return convert(stmt.assignment());
+    }else if(stmt.preIncrementExpression() != null){
+      return convert(stmt.preIncrementExpression());
+    }else if(stmt.preDecrementExpression() != null){
+      return convert(stmt.preDecrementExpression());
+    }else if(stmt.postIncrementExpression() != null){
+      return convert(stmt.postIncrementExpression());
+    }else if(stmt.postDecrementExpression() != null){
+      return convert(stmt.postDecrementExpression());
+    }else if(stmt.methodInvocation() != null){
+      return convert(stmt.methodInvocation());
+    }else if(stmt.classInstanceCreationExpression() != null){
+      return convert(stmt.classInstanceCreationExpression());
+    }else throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.MethodInvocationContext methodInvocationContext) {
+    String name = methodInvocationContext.methodName().Identifier().getText();
+    Expr receiver;
+    if(methodInvocationContext.typeName() != null){
+      receiver = new LocalOrFieldVarOrClassname(methodInvocationContext.typeName().getText(), methodInvocationContext.typeArguments().getStart());
+    }else if(methodInvocationContext.expressionName()!=null){
+      receiver = convert(methodInvocationContext.expressionName());
+    }else{
+      receiver = new This(methodInvocationContext.getStart());
+    }
+
+    ArgumentList argumentList = null;
+    MethodCall ret = new MethodCall(new Receiver(receiver), name, argumentList, methodInvocationContext.getStart());
+    return ret;
+  }
+
+  private static Expr convert(Java8Parser.ExpressionNameContext expressionNameContext) {
+    /*
+    Der Parser könnte feststellen, ob es sich um einen Klassennamen,
+    eine lokale Variable oder einen Feldzugriff handelt.
+    Das überprüft allerdings sowieso der Typinferenzalgorithmus,
+    da er auch die Typchecks übernimmt. Code wäre redundant und würde
+    Möglichkeiten des Typinferenzalgorithmus einschränken.
+     */
+    return new LocalOrFieldVarOrClassname(expressionNameContext.getText(), expressionNameContext.getStart());
+  }
+
+
+  private static Statement convert(Java8Parser.ClassInstanceCreationExpressionContext stmt) {
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static ExprStmt convert(Java8Parser.PreIncrementExpressionContext stmt) {
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static ExprStmt convert(Java8Parser.PreDecrementExpressionContext stmt) {
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.PostIncrementExpressionContext stmt) {
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.PostDecrementExpressionContext stmt) {
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static ExprStmt convert(Java8Parser.AssignmentContext stmt) {
+    //TODO
+    //return new StatementReturn(new Assign())
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.IfThenStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.IfThenElseStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.IfThenElseStatementNoShortIfContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.AssertStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.SwitchStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.SwitchBlockContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.SwitchBlockStatementGroupContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.WhileStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.WhileStatementNoShortIfContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.DoStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.ForStatementContext stmt){
+    if(stmt.basicForStatement() != null){
+      return convert(stmt.basicForStatement());
+    }else if(stmt.enhancedForStatement() != null){
+      return convert(stmt.enhancedForStatement());
+    }else throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.ForStatementNoShortIfContext stmt){
+    if(stmt.basicForStatementNoShortIf() != null){
+      return convert(stmt.basicForStatementNoShortIf());
+    }else if(stmt.enhancedForStatementNoShortIf() != null){
+      return convert(stmt.enhancedForStatementNoShortIf());
+    }else throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.BasicForStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.BasicForStatementNoShortIfContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private Statement convert(Java8Parser.ForInitContext stmt){
+    if(stmt.statementExpressionList() != null){
+      return convert(stmt.statementExpressionList());
+    }else if(stmt.localVariableDeclaration() != null){
+      return convert(stmt.localVariableDeclaration());
+    }else throw new NotImplementedException();
+  }
+
+  private Statement convert(Java8Parser.LocalVariableDeclarationContext declaration) {
+    List<LocalVarDecl> declarations = new ArrayList<>();
+    if(declaration.variableModifier() != null && declaration.variableModifier().size() > 0){
+      //TODO
+    }
+    RefTypeOrTPH type;
+    if(declaration.unannType()==null){
+      type = TypePlaceholder.fresh(declaration.getStart());
+    }else{
+      type = convert(declaration.unannType());
+    }
+    for(Java8Parser.VariableDeclaratorContext varDecl : declaration.variableDeclaratorList().variableDeclarator()){
+      TerminalNode name = varDecl.variableDeclaratorId().Identifier();
+      declarations.add(new LocalVarDecl(name.getText(), type, name.getSymbol()));
+    }
+    if(declarations.size()==1)return declarations.get(0);
+    return new LocalVarBunchDeclaration(declarations, declaration.getStart());
+  }
+
+  private static Statement convert(Java8Parser.ForUpdateContext stmt){
+    return convert(stmt.statementExpressionList());
+  }
+
+  private static Statement convert(Java8Parser.StatementExpressionListContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.EnhancedForStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.EnhancedForStatementNoShortIfContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.BreakStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.ContinueStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.ReturnStatementContext stmt){
+    return new Return(convert(stmt.expression()),stmt.getStart());
+    //throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.ThrowStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.SynchronizedStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.TryStatementContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.CatchesContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+  private static Statement convert(Java8Parser.CatchClauseContext stmt){
+    //TODO
+    throw new NotImplementedException();
+  }
+
+/*
+***************+ Expression Conversions:
+ */
+
+  private static Expr convert(Java8Parser.ExpressionContext expression) {
+    if(expression.lambdaExpression()!=null){
+      return convert(expression.lambdaExpression());
+    }else{
+      return convert(expression.assignmentExpression());
+    }
+  }
+
+  private static Expr convert(Java8Parser.AssignmentExpressionContext expression) {
+    if(expression.conditionalExpression() != null){
+      return convert(expression.conditionalExpression());
+    }else{
+      return convert(expression.assignment());
+    }
+  }
+
+  private static Expr convert(Java8Parser.ConditionalExpressionContext expression) {
+    if(expression.conditionalOrExpression() != null){
+      return convert(expression.conditionalOrExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.ConditionalOrExpressionContext expression) {
+    if(expression.conditionalOrExpression() == null){
+      return convert(expression.conditionalAndExpression());
+    }else{
+      return new Binary(convert(expression.conditionalOrExpression()),
+              convert(expression.conditionalAndExpression()), new OrOp(null));
+    }
+  }
+
+  private static Expr convert(Java8Parser.ConditionalAndExpressionContext expression) {
+    if(expression.conditionalAndExpression() == null){
+      return convert(expression.inclusiveOrExpression());
+    }else{
+      return new Binary(convert(expression.conditionalAndExpression()),
+              convert(expression.inclusiveOrExpression()), new AndOp(null));
+    }
+  }
+
+  private static Expr convert(Java8Parser.InclusiveOrExpressionContext expression) {
+    if(expression.inclusiveOrExpression() == null){
+      return convert(expression.exclusiveOrExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.ExclusiveOrExpressionContext expression) {
+    if(expression.exclusiveOrExpression() == null){
+      return convert(expression.andExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.AndExpressionContext expression) {
+    if(expression.andExpression() == null){
+      return convert(expression.equalityExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.EqualityExpressionContext expression) {
+    if(expression.equalityExpression() == null){
+      return convert(expression.relationalExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.RelationalExpressionContext expression) {
+    if(expression.relationalExpression() == null){
+      return convert(expression.shiftExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.ShiftExpressionContext expression) {
+    if(expression.shiftExpression() == null){
+      return convert(expression.additiveExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.AdditiveExpressionContext expression) {
+    if(expression.additiveExpression() == null){
+      return convert(expression.multiplicativeExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.MultiplicativeExpressionContext expression) {
+    if(expression.multiplicativeExpression() == null){
+      return convert(expression.unaryExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.UnaryExpressionContext expression) {
+    if(expression.preIncrementExpression() != null){
+      return convert(expression.preIncrementExpression());
+    }else if(expression.preDecrementExpression() != null){
+      return convert(expression.preDecrementExpression());
+    }else if(expression.unaryExpressionNotPlusMinus() != null){
+      return convert(expression.unaryExpressionNotPlusMinus());
+    }else if(expression.getText().startsWith("+")){
+      return new UnaryPlus(convert(expression.unaryExpression()));
+    }else if(expression.getText().startsWith("-")){
+      return new UnaryMinus(convert(expression.unaryExpression()));
+    }else{
+      //Diese Exceptions sollte nie geworfen werden.
+      //Der Code wurde nur noch nicht getestet. Sollte zur Sicherheit drin bleiben.
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.UnaryExpressionNotPlusMinusContext expression) {
+    if(expression.postfixExpression() != null){
+      return convert(expression.postfixExpression());
+    }else if(expression.castExpression() != null){
+      return convert(expression.castExpression());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.PostfixExpressionContext expression) {
+    Expr expr;
+    if(expression.primary() != null){
+      expr = convert(expression.primary());
+    }else{
+      expr = convert(expression.expressionName());
+    }
+    if(expression.postDecrementExpression_lf_postfixExpression() == null &&
+            expression.postIncrementExpression_lf_postfixExpression() == null){
+      return expr;
+    }
+
+    for(Java8Parser.PostIncrementExpression_lf_postfixExpressionContext inc : expression.postIncrementExpression_lf_postfixExpression()){
+      expr = new PostIncExpr(expr);
+    }
+    for(Java8Parser.PostDecrementExpression_lf_postfixExpressionContext dec : expression.postDecrementExpression_lf_postfixExpression()){
+      expr = new PostDecExpr(expr);
+    }
+
+    return expr;
+  }
+
+  private static Expr convert(Java8Parser.PrimaryContext primary) {
+    Expr expr;
+    if(primary.primaryNoNewArray_lfno_primary()!=null){
+      expr = convert(primary.primaryNoNewArray_lfno_primary());
+    }else{
+      expr = convert(primary.arrayCreationExpression());
+    }
+
+    if(primary.primaryNoNewArray_lf_primary() != null && primary.primaryNoNewArray_lf_primary().size()>0){
+      for(Java8Parser.PrimaryNoNewArray_lf_primaryContext e : primary.primaryNoNewArray_lf_primary()){
+        expr = new LocalOrFieldVarOrClassname(expr, e.getText());
+      }
+    }
+    return expr;
+  }
+
+  private static Expr convert(Java8Parser.PrimaryNoNewArray_lfno_primaryContext expression) {
+    if(expression.literal() != null){
+      return convert(expression.literal());
+    }else if(expression.expression()!=null){
+      return convert(expression.expression());
+    }else if(expression.methodInvocation_lfno_primary() != null){
+      return convert(expression.methodInvocation_lfno_primary());
+    }else{
+      throw new NotImplementedException();
+    }
+  }
+
+  private static Expr convert(Java8Parser.MethodInvocation_lfno_primaryContext expression) {
+    throw new NotImplementedException();
+  }
+
+  private static Expr convert(Java8Parser.LambdaExpressionContext expression) {
+    throw new NotImplementedException();
+  }
+
 }

src/de/dhbwstuttgart/parser/SyntaxTreeStatementGenerator.java

@@ -1,308 +0,0 @@
-package de.dhbwstuttgart.parser;
-
-import de.dhbwstuttgart.parser.antlr.Java8Parser;
-import de.dhbwstuttgart.syntaxtree.*;
-import de.dhbwstuttgart.syntaxtree.modifier.*;
-import de.dhbwstuttgart.syntaxtree.modifier.fieldModifier.*;
-import de.dhbwstuttgart.syntaxtree.modifier.methodModifier.MethodModifier;
-import de.dhbwstuttgart.syntaxtree.statement.*;
-import de.dhbwstuttgart.syntaxtree.type.RefType;
-import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
-import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
-import de.dhbwstuttgart.typecheck.JavaClassName;
-import de.dhbwstuttgart.typecheck.JavaClassRegistry;
-import org.antlr.v4.runtime.Token;
-import org.antlr.v4.runtime.tree.TerminalNode;
-import sun.reflect.generics.reflectiveObjects.NotImplementedException;
-
-import java.util.ArrayList;
-import java.util.List;
-
-public class SyntaxTreeStatementGenerator {
-
-  public static StatementReturn convert(Java8Parser.StatementContext stmt) {
-    if (stmt.statementWithoutTrailingSubstatement() != null) {
-      return convert(stmt.statementWithoutTrailingSubstatement());
-    } else if (stmt.whileStatement() != null) {
-      return convert(stmt.whileStatement());
-    } else if (stmt.forStatement() != null) {
-      return convert(stmt.forStatement());
-    } else if (stmt.ifThenElseStatement() != null) {
-      return convert(stmt.ifThenElseStatement());
-    } else if (stmt.ifThenStatement() != null) {
-      return convert(stmt.ifThenStatement());
-    } else if (stmt.labeledStatement() != null) {
-      return convert(stmt.labeledStatement() );
-    }else throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.StatementNoShortIfContext stmt){
-    if(stmt.statementWithoutTrailingSubstatement() != null){
-      return convert(stmt.statementWithoutTrailingSubstatement());
-    }else if(stmt.labeledStatementNoShortIf() != null){
-      return convert(stmt.labeledStatementNoShortIf());
-    }else if(stmt.ifThenElseStatementNoShortIf() != null){
-      return convert(stmt.ifThenElseStatementNoShortIf());
-    }else if(stmt.whileStatementNoShortIf() != null){
-      return convert(stmt.whileStatementNoShortIf());
-    }else if(stmt.forStatementNoShortIf() != null){
-      return convert(stmt.forStatementNoShortIf());
-    }else throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.StatementWithoutTrailingSubstatementContext stmt) {
-    if(stmt.block() != null){
-      return convert(stmt.block());
-    }else if(stmt.emptyStatement() != null){
-      return new StatementReturn(new EmptyStmt());
-    }else if(stmt.expressionStatement() != null){
-      return convert(stmt.expressionStatement());
-    }else if(stmt.assertStatement() != null){
-      return convert(stmt.assertStatement());
-    }else if(stmt.switchStatement() != null){
-      return convert(stmt.switchStatement());
-    }else if(stmt.doStatement() != null){
-      return convert(stmt.doStatement());
-    }else if(stmt.breakStatement() != null){
-      return convert(stmt.breakStatement());
-    }else if(stmt.continueStatement() != null){
-      return convert(stmt.continueStatement());
-    }else if(stmt.returnStatement() != null){
-      return convert(stmt.returnStatement());
-    }else if(stmt.synchronizedStatement() != null){
-      return convert(stmt.synchronizedStatement());
-    }else if(stmt.throwStatement() != null){
-      return convert(stmt.throwStatement());
-    }else if(stmt.tryStatement() != null){
-      return convert(stmt.tryStatement());
-    }else throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.LabeledStatementContext labeledStatementContext) {
-    throw new NotImplementedException();
-    //return convert(labeledStatementContext.statement());
-  }
-
-  private static StatementReturn convert(Java8Parser.LabeledStatementNoShortIfContext stmt){
-    throw new NotImplementedException();
-    //return convert(stmt.statementNoShortIf());
-  }
-
-  private static StatementReturn convert(Java8Parser.ExpressionStatementContext stmt){
-    return convert(stmt.statementExpression());
-  }
-
-  private static StatementReturn convert(Java8Parser.StatementExpressionContext stmt) {
-    if(stmt.assignment() != null){
-      return convert(stmt.assignment());
-    }else if(stmt.preIncrementExpression() != null){
-      return convert(stmt.preIncrementExpression());
-    }else if(stmt.preDecrementExpression() != null){
-      return convert(stmt.preDecrementExpression());
-    }else if(stmt.postIncrementExpression() != null){
-      return convert(stmt.postIncrementExpression());
-    }else if(stmt.postDecrementExpression() != null){
-      return convert(stmt.postDecrementExpression());
-    }else if(stmt.methodInvocation() != null){
-      return convert(stmt.methodInvocation());
-    }else if(stmt.classInstanceCreationExpression() != null){
-      return convert(stmt.classInstanceCreationExpression());
-    }else throw new NotImplementedException();
-  }
-
-  private StatementReturn convert(Java8Parser.MethodInvocationContext methodInvocationContext) {
-    String name = methodInvocationContext.methodName().Identifier().getText();
-    Expr receiver;
-    if(methodInvocationContext.typeName() == null){
-      receiver = new This(methodInvocationContext.getStart());
-    }else{
-      receiver = convert(methodInvocationContext.typeName());
-    }
-
-    ArgumentList argumentList = null;
-    MethodCall ret = new MethodCall(new Receiver(receiver), name, argumentList, methodInvocationContext.getStart());
-    return new StatementReturn(ret);
-  }
-
-  private static StatementReturn convert(Java8Parser.ClassInstanceCreationExpressionContext stmt) {
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.PreIncrementExpressionContext stmt) {
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.PreDecrementExpressionContext stmt) {
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.PostIncrementExpressionContext stmt) {
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.PostDecrementExpressionContext stmt) {
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.AssignmentContext stmt) {
-    //TODO
-    //return new StatementReturn(new Assign())
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.IfThenStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.IfThenElseStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.IfThenElseStatementNoShortIfContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.AssertStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.SwitchStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.SwitchBlockContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.SwitchBlockStatementGroupContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.WhileStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.WhileStatementNoShortIfContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.DoStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.ForStatementContext stmt){
-    if(stmt.basicForStatement() != null){
-      return convert(stmt.basicForStatement());
-    }else if(stmt.enhancedForStatement() != null){
-      return convert(stmt.enhancedForStatement());
-    }else throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.ForStatementNoShortIfContext stmt){
-    if(stmt.basicForStatementNoShortIf() != null){
-      return convert(stmt.basicForStatementNoShortIf());
-    }else if(stmt.enhancedForStatementNoShortIf() != null){
-      return convert(stmt.enhancedForStatementNoShortIf());
-    }else throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.BasicForStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.BasicForStatementNoShortIfContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.ForInitContext stmt){
-    if(stmt.statementExpressionList() != null){
-      return convert(stmt.statementExpressionList());
-    }else if(stmt.localVariableDeclaration() != null){
-      return convert(stmt.localVariableDeclaration());
-    }else throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.ForUpdateContext stmt){
-    return convert(stmt.statementExpressionList());
-  }
-
-  private static StatementReturn convert(Java8Parser.StatementExpressionListContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.EnhancedForStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.EnhancedForStatementNoShortIfContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.BreakStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.ContinueStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.ReturnStatementContext stmt){
-    return new StatementReturn(new Return(convert(stmt.expression()),stmt.getStart()));
-  }
-
-  private static StatementReturn convert(Java8Parser.ThrowStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.SynchronizedStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.TryStatementContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.CatchesContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-  private static StatementReturn convert(Java8Parser.CatchClauseContext stmt){
-    //TODO
-    throw new NotImplementedException();
-  }
-
-
-
-}
-
-class StatementReturn{
-  public StatementReturn(Statement statement){
-
-  }
-}

src/de/dhbwstuttgart/syntaxtree/operator/AndOp.java

@@ -2,14 +2,15 @@ package de.dhbwstuttgart.syntaxtree.operator;
 
 import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
 import de.dhbwstuttgart.syntaxtree.statement.Binary;
+import org.antlr.v4.runtime.Token;
 import org.apache.bcel.generic.InstructionList;
 
 public class AndOp extends LogOp
 {
 
-    public AndOp(int offset, int variableLength)
+    public AndOp(Token offset)
     {
-        super(offset,variableLength);
+        super(offset);
     }
 
 

src/de/dhbwstuttgart/syntaxtree/operator/LogOp.java

@@ -1,4 +1,6 @@
 package de.dhbwstuttgart.syntaxtree.operator;
+import org.antlr.v4.runtime.Token;
+
 import java.util.HashMap;
 import java.util.Hashtable;
 import java.util.Iterator;
@@ -8,7 +10,7 @@ import java.util.Iterator;
 public abstract class LogOp extends Operator
 {
     
-    public LogOp(int offset, int variableLength)
+    public LogOp(Token offset)
     {
     }
 

src/de/dhbwstuttgart/syntaxtree/operator/OrOp.java

@@ -1,21 +1,14 @@
 package de.dhbwstuttgart.syntaxtree.operator;
 
-import org.apache.bcel.Constants;
-import org.apache.bcel.generic.BranchInstruction;
-import org.apache.bcel.generic.GOTO;
-import org.apache.bcel.generic.IFEQ;
-import org.apache.bcel.generic.IFNE;
-import org.apache.bcel.generic.InstructionConstants;
-import org.apache.bcel.generic.InstructionList;
-import org.apache.bcel.generic.ObjectType;
+import org.antlr.v4.runtime.Token;
 
 
 public class OrOp extends LogOp
 {
 
-    public OrOp(int offset, int variableLength)
+    public OrOp(Token offset)
     {
-        super(offset,variableLength);
+        super(offset);
     }
 
     

src/de/dhbwstuttgart/syntaxtree/statement/Binary.java

@@ -17,6 +17,8 @@ public class Binary extends BinaryExpr
         super(null);
     }
 
-
+    public Binary(Expr expr1, Expr expr2, Operator op){
+        super(null);
+    }
     
 }

src/de/dhbwstuttgart/syntaxtree/statement/BinaryExpr.java

@@ -3,7 +3,7 @@ package de.dhbwstuttgart.syntaxtree.statement;
 
 import org.antlr.v4.runtime.Token;
 
-public abstract class BinaryExpr extends Expr
+public abstract class BinaryExpr extends Expression
 {
 
     public BinaryExpr(Token offset)

src/de/dhbwstuttgart/syntaxtree/statement/CastExpr.java

@@ -3,7 +3,7 @@ package de.dhbwstuttgart.syntaxtree.statement;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
 
 
-public class CastExpr extends Expr
+public class CastExpr extends Expression
 {
     public CastExpr(RefTypeOrTPH castType, Expr expr, int offset)
     {

src/de/dhbwstuttgart/syntaxtree/statement/Executable.java

@@ -1,17 +0,0 @@
-
-package de.dhbwstuttgart.syntaxtree.statement;
-
-import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
-import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
-import org.antlr.v4.runtime.Token;
-
-public abstract class Executable extends SyntaxTreeNode
-{
-	private RefTypeOrTPH type;
-		
-   	public Executable(RefTypeOrTPH type, Token offset) {
-		this.type = type;
-	}
-
-	//public abstract String getTypeInformation();
-}

src/de/dhbwstuttgart/syntaxtree/statement/Expr.java

@@ -5,11 +5,6 @@ import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
 import org.antlr.v4.runtime.Token;
 
 
-public abstract class Expr extends Executable
+public interface Expr
 {
-
-    public Expr(RefTypeOrTPH type, Token offset) {
-		super(type, offset);
-	}
-
 }

src/de/dhbwstuttgart/syntaxtree/statement/ExprStmt.java

@@ -3,7 +3,7 @@ package de.dhbwstuttgart.syntaxtree.statement;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
 import org.antlr.v4.runtime.Token;
 
-public abstract class ExprStmt extends Executable {
+public abstract class ExprStmt extends Statement implements Expr {
 
 	public ExprStmt(RefTypeOrTPH type, Token offset) {
 		super(type, offset);

src/de/dhbwstuttgart/syntaxtree/statement/Expression.java

@@ -0,0 +1,14 @@
+
+package de.dhbwstuttgart.syntaxtree.statement;
+
+
+import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
+import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
+import org.antlr.v4.runtime.Token;
+
+public class Expression extends SyntaxTreeNode implements Expr
+{
+    public Expression(RefTypeOrTPH type, Token offset){
+
+    }
+}

src/de/dhbwstuttgart/syntaxtree/statement/InstVar.java

@@ -3,20 +3,19 @@ import java.util.Enumeration;
 import java.util.Hashtable;
 import java.util.Iterator;
 
+import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
 import  org.apache.bcel.generic.ClassGen;
 import org.apache.bcel.generic.InstructionList;
 
 
 
 
-public class InstVar extends Expr
+public class InstVar extends SyntaxTreeNode implements Expr
 {
     private Expr expr;
-    protected String type;  //???? BRAUCHT MAN DEN???
-    public InstVar(Expr e, String n, int offset)
+    public InstVar(Expr instanz, String name, int offset)
     {
-        super(null,null);
-        expr = e;
+        expr = instanz;
     }
 
 }

src/de/dhbwstuttgart/syntaxtree/statement/LambdaExpression.java

@@ -1,6 +1,7 @@
 package de.dhbwstuttgart.syntaxtree.statement;
 
 import de.dhbwstuttgart.syntaxtree.ParameterList;
+import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
 import de.dhbwstuttgart.syntaxtree.type.FunN;
 
 /**
@@ -10,7 +11,7 @@ import de.dhbwstuttgart.syntaxtree.type.FunN;
  * LambdaExpression Aufbau:
  * ( ParameterList ) -> { method_body };
  */
-public class LambdaExpression extends Expr{ 
+public class LambdaExpression extends Expression{
 	
 
 	/**
@@ -22,7 +23,7 @@ public class LambdaExpression extends Expr{
 	private ParameterList params;
 	
 	public LambdaExpression(int offset, int variableLength) {
-		super(null, null);
+		super(null,null);
 	}
 
 

src/de/dhbwstuttgart/syntaxtree/statement/Literal.java

@@ -3,7 +3,7 @@ package de.dhbwstuttgart.syntaxtree.statement;
 
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
 
-public abstract class Literal extends Expr
+public abstract class Literal extends Expression
 {
     // Gibt an, ob das Literal fuer einen Objekttyp oder
     // als primitive Konstante generiert werden soll.

src/de/dhbwstuttgart/syntaxtree/statement/LocalOrFieldVarOrClassname.java

@@ -14,8 +14,15 @@ import org.apache.bcel.generic.ObjectType;
 import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
 
 
-
-public class LocalOrFieldVarOrClassname extends Expr
+/*
+* Ausdrücke der Form [Identifier....]Identifier werden zu dieser Klasse geparst.
+* Typinferenzalgorithmus muss herausfinden um was es sich handelt:
+* Es können folgende Dinge sein
+* package.name.Classname - Classname
+* LocalOrFieldVarOrClassname.FieldVar[.Fieldvar...] - FieldVar
+* Identifier - Lokale Variable oder FieldVar
+*/
+public class LocalOrFieldVarOrClassname extends Expression
 {
 
     private final String name;
@@ -29,5 +36,12 @@ public class LocalOrFieldVarOrClassname extends Expr
     }
 
 
+    public LocalOrFieldVarOrClassname(Expr e1, String access)
+    {
+        super(TypePlaceholder.fresh(null),null);
+        this.name = n;
+    }
+
+
 
 }

src/de/dhbwstuttgart/syntaxtree/statement/LocalVarBunchDeclaration.java

@@ -0,0 +1,16 @@
+package de.dhbwstuttgart.syntaxtree.statement;
+
+import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
+import de.dhbwstuttgart.syntaxtree.type.Void;
+import org.antlr.v4.runtime.Token;
+
+import java.util.List;
+
+/**
+ * Created by janulrich on 27.02.17.
+ */
+public class LocalVarBunchDeclaration extends Statement {
+    public LocalVarBunchDeclaration(List<LocalVarDecl> declarations, Token start) {
+        super(new Void(start), start);
+    }
+}

src/de/dhbwstuttgart/syntaxtree/statement/MethodCall.java

@@ -15,7 +15,7 @@ import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
 
 
 
-public class MethodCall extends Statement
+public class MethodCall extends ExprStmt
 {
 	public MethodCall(Receiver receiver, String methodName, ArgumentList argumentList, Token offset){
 		super(TypePlaceholder.fresh(offset),offset);

src/de/dhbwstuttgart/syntaxtree/statement/NewArray.java

@@ -4,7 +4,7 @@ import java.util.List;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
 
 
-public class NewArray extends Expr
+public class NewArray extends Expression
 {
     public NewArray(int offset,int variableLength)
     {

src/de/dhbwstuttgart/syntaxtree/statement/NewClass.java

@@ -7,7 +7,7 @@ import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
 
 
 
-public class NewClass extends Expr
+public class NewClass extends ExprStmt
 {
     public NewClass(int offset,int variableLength)
     {

src/de/dhbwstuttgart/syntaxtree/statement/PostDecExpr.java

@@ -2,21 +2,20 @@ package de.dhbwstuttgart.syntaxtree.statement;
 import java.util.Hashtable;
 import java.util.Iterator;
 
+import de.dhbwstuttgart.parser.antlr.Java8Parser;
 import  org.apache.bcel.generic.ClassGen;
 import org.apache.bcel.generic.InstructionList;
 
 
 
 
-public class PostDecExpr extends UnaryExpr
+public class PostDecExpr extends PostIncExpr
 {
-    public PostDecExpr(int offset,int variableLength)
-    {
-        super(offset,variableLength);
+
+    public PostDecExpr(Expr expr) {
+        super(expr);
     }
 
-    
-    
     public void set_Expr(Expr ex)
     {
     this.expr = ex;

src/de/dhbwstuttgart/syntaxtree/statement/PostIncExpr.java

@@ -15,13 +15,11 @@ import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
 
 public class PostIncExpr extends UnaryExpr
 {
-    public PostIncExpr(int offset,int variableLength)
-    {
-        super(offset,variableLength);
+    public PostIncExpr(Expr expr) {
+        super(null);
     }
 
 
-    
     public void set_Expr(Expr ex)
     {
     this.expr = ex;

src/de/dhbwstuttgart/syntaxtree/statement/Return.java

@@ -15,7 +15,7 @@ import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
 
 public class Return extends Statement
 {
-    public Return(Statement retExpr, Token offset)
+    public Return(Expr retExpr, Token offset)
     {
         super(null,null);
     }

src/de/dhbwstuttgart/syntaxtree/statement/Statement.java

@@ -1,16 +1,17 @@
 package de.dhbwstuttgart.syntaxtree.statement;
 
+import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPH;
 import org.antlr.v4.runtime.Token;
 
 
-public abstract class Statement extends Executable
+public abstract class Statement extends SyntaxTreeNode
 {
     
     
     public Statement(RefTypeOrTPH type, Token offset)
     {
-    	super(type,offset);
+
     }
 
 

src/de/dhbwstuttgart/syntaxtree/statement/This.java

@@ -3,7 +3,7 @@ package de.dhbwstuttgart.syntaxtree.statement;
 import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
 import org.antlr.v4.runtime.Token;
 
-public class This extends Expr
+public class This extends Expression
 {
     public This(Token offset)
     {

src/de/dhbwstuttgart/syntaxtree/statement/UnaryExpr.java

@@ -1,12 +1,13 @@
 package de.dhbwstuttgart.syntaxtree.statement;
 
 
+import org.antlr.v4.runtime.Token;
 
 public abstract class UnaryExpr extends MethodCall
 {
     public Expr expr;
 
-    public UnaryExpr(int offset,int variableLength)
+    public UnaryExpr(Token offset)
     {
         super(null,null,null,null);
     }

src/de/dhbwstuttgart/syntaxtree/statement/UnaryMinus.java

@@ -1,9 +1,12 @@
 package de.dhbwstuttgart.syntaxtree.statement;
 
 
-public class UnaryMinus
+import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
+
+public class UnaryMinus extends UnaryPlus
 {
 
-    
-    
+    public UnaryMinus(Expr expression) {
+        super(expression);
+    }
 }

src/de/dhbwstuttgart/syntaxtree/statement/UnaryPlus.java

@@ -1,5 +1,10 @@
 package de.dhbwstuttgart.syntaxtree.statement;
-public class UnaryPlus
-{
 
+import de.dhbwstuttgart.syntaxtree.SyntaxTreeNode;
+
+public class UnaryPlus extends SyntaxTreeNode implements Expr
+{
+    public UnaryPlus(Expr expression){
+
+    }
 }