Diffing and UI improvements

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;
+    }
+
+    @Override
+    public ASTNode visit(TermLiteral term) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(StringLiteral string) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(Variable variable) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(BooleanLiteral bool) {
+        return null;
+    }
+
+    @Override
+    public Statements visit(Statements statements) {
+        Statements s = new Statements();
+        Statements other = (Statements) this.other;
+        assert statements.size() <= other.size();
+
+        int i = 0;
+        for (; i < statements.size(); i++) {
+            if (statements.get(i).eq(other.get(i))) {
+                break;
+            }
+        }
+
+        for (int j = i; j < other.size(); j++) {
+            s.add(other.get(i));
+        }
+
+        return s;
+    }
+
+    @Override
+    public ASTNode visit(IntegerLiteral integer) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(CasesStatement cases) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(DefaultCaseStatement defCase) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(CallStatement call) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(TheOnlyStatement theOnly) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(ForeachStatement foreach) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(RepeatStatement repeat) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(Signature signature) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(Parameters parameters) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(UnaryExpression e) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(TryCase TryCase) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(GuardedCaseStatement guardedCaseStatement) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(CaseStatement caseStatement) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(SubstituteExpression subst) {
+        return null;
+    }
+
+    @Override
+    public ASTNode visit(ClosesCase closesCase) {
+        return null;
+    }
+
+    public ProofScript diff(ProofScript old, ProofScript rev) {
+        other = rev;
+        return (ProofScript) visit(old);
+    }
+}

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

@@ -125,4 +125,8 @@ public abstract class ASTNode<T extends ParserRuleContext>
         } while (n != null);
         return true;
     }
+
+    public boolean eq(ASTNode other) {
+        return equals(other);
+    }
 }

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

@@ -74,4 +74,17 @@ public class AssignmentStatement
         return type != null;
     }
 
+
+    @Override
+    public boolean eq(ASTNode o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+
+        AssignmentStatement that = (AssignmentStatement) o;
+
+        if (!getLhs().eq(that.getLhs())) return false;
+        if (!getRhs().eq(that.getRhs())) return false;
+        return getType() != null ? getType().equals(that.getType()) : that.getType() == null;
+    }
 }

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

@@ -64,9 +64,20 @@ public class CallStatement extends Statement<ScriptLanguageParser.ScriptCommandC
      */
     @Override
     public CallStatement copy() {
-
         CallStatement s = new CallStatement(command, parameters.copy());
         s.setRuleContext(this.getRuleContext());
         return s;
     }
+
+    @Override
+    public boolean eq(ASTNode o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+
+        CallStatement that = (CallStatement) o;
+
+        if (!getCommand().equals(that.getCommand())) return false;
+        return getParameters().equals(that.getParameters());
+    }
 }

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

@@ -53,4 +53,15 @@ public abstract class CaseStatement extends Statement<ScriptLanguageParser.Cases
      */
     @Override public abstract CaseStatement copy();
 
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+
+        CaseStatement that = (CaseStatement) o;
+
+        return getBody().eq(that.getBody());
+    }
+
 }

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

@@ -66,4 +66,21 @@ public class CasesStatement extends Statement<ScriptLanguageParser.CasesStmtCont
         c.setRuleContext(this.ruleContext);
         return c;
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+
+        CasesStatement that = (CasesStatement) o;
+
+        for (int i = 0; i < cases.size(); i++) {
+            if(!cases.get(i).eq(that.cases.get(i)))
+                return false;
+        }
+
+        return getDefCaseStmt() != null ? getDefCaseStmt().eq(that.getDefCaseStmt()) : that.getDefCaseStmt() == null;
+    }
+
 }

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

@@ -44,4 +44,15 @@ public class ClosesCase extends CaseStatement {
         return cs;
     }
 
+    @Override
+    public boolean eq(ASTNode o) {
+        if (this == o) return true;
+        if (!(o instanceof ClosesCase)) return false;
+        if (!super.equals(o)) return false;
+
+        ClosesCase that = (ClosesCase) o;
+
+        return getClosesGuard() != null ? getClosesGuard().eq(that.getClosesGuard()) : that.getClosesGuard() == null;
+    }
+
 }

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

@@ -37,6 +37,24 @@ public class DefaultCaseStatement extends Statement<ScriptLanguageParser.StmtLis
         dcs.setRuleContext(this.ruleContext);
         return dcs;
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+
+        DefaultCaseStatement that = (DefaultCaseStatement) o;
+
+        return getBody().eq(that.getBody());
+    }
+
+    @Override
+    public int hashCode() {
+        int result = super.hashCode();
+        result = 31 * result + getBody().hashCode();
+        return result;
+    }
 }
 
 

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

@@ -40,4 +40,16 @@ public abstract class GoalSelector<T extends ParserRuleContext>
     @Getter
     @Setter
     @NonNull private Statements body = new Statements();
+
+    @Override
+    public boolean eq(ASTNode o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+
+        GoalSelector<?> that = (GoalSelector<?>) o;
+
+        return getBody() != null ? getBody().eq(that.getBody()) : that.getBody() == null;
+    }
+
 }

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

@@ -37,5 +37,15 @@ public class GuardedCaseStatement extends CaseStatement {
         return scs;
     }
 
+    @Override
+    public boolean eq(ASTNode o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+
+        GuardedCaseStatement that = (GuardedCaseStatement) o;
+
+        return getGuard().eq(that.getGuard());
+    }
 
 }

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

@@ -23,7 +23,6 @@ package edu.kit.iti.formal.psdbg.parser.ast;
  */
 
 
-
 import edu.kit.iti.formal.psdbg.parser.ScriptLanguageParser;
 import edu.kit.iti.formal.psdbg.parser.Visitor;
 import lombok.EqualsAndHashCode;
@@ -46,11 +45,13 @@ import java.util.function.Function;
 public class Parameters extends ASTNode<ScriptLanguageParser.ParametersContext> {
     private final Map<Variable, Expression> parameters = new LinkedHashMap<>();
 
-    @Override public <T> T accept(Visitor<T> visitor) {
+    @Override
+    public <T> T accept(Visitor<T> visitor) {
         return visitor.visit(this);
     }
 
-    @Override public Parameters copy() {
+    @Override
+    public Parameters copy() {
         Parameters p = new Parameters();
         forEach((k, v) -> p.put(k.copy(), v.copy()));
         p.setRuleContext(this.getRuleContext());
@@ -152,4 +153,24 @@ public class Parameters extends ASTNode<ScriptLanguageParser.ParametersContext>
         return parameters.merge(key, value, remappingFunction);
     }
 
+    @Override
+    public boolean eq(ASTNode o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+
+        Parameters that = (Parameters) o;
+        for (Map.Entry<Variable, Expression> e : that.parameters.entrySet()) {
+            if (!e.getValue().eq(get(e.getKey())))
+                return false;
+        }
+
+        for (Map.Entry<Variable, Expression> e : parameters.entrySet()) {
+            if (!e.getValue().eq(that.get(e.getKey())))
+                return false;
+        }
+
+        return true;
+    }
+
 }

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

@@ -59,4 +59,18 @@ public class ProofScript extends ASTNode<ScriptLanguageParser.ScriptContext> {
     }
 
 
+    @Override
+    public boolean eq(ASTNode o) {
+        if (this == o) return true;
+        if (!(o instanceof ProofScript)) return false;
+        if (!super.equals(o)) return false;
+
+        ProofScript that = (ProofScript) o;
+
+        if (getName() != null ? !getName().equals(that.getName()) : that.getName() != null) return false;
+        if (getSignature() != null ? !getSignature().eq(that.getSignature()) : that.getSignature() != null)
+            return false;
+        return getBody() != null ? getBody().eq(that.getBody()) : that.getBody() == null;
+    }
+
 }

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

@@ -59,4 +59,6 @@ public class RepeatStatement extends GoalSelector<ScriptLanguageParser.RepeatStm
         rs.setRuleContext(this.ruleContext);
         return rs;
     }
+
+
 }

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

@@ -23,7 +23,6 @@ package edu.kit.iti.formal.psdbg.parser.ast;
  */
 
 
-
 import edu.kit.iti.formal.psdbg.parser.ScriptLanguageParser;
 import edu.kit.iti.formal.psdbg.parser.Visitor;
 import edu.kit.iti.formal.psdbg.parser.types.Type;
@@ -42,16 +41,18 @@ import java.util.function.Function;
  * @author Alexander Weigl
  * @version 1 (29.04.17)
  */
-@EqualsAndHashCode(callSuper = false, of="sig")
+@EqualsAndHashCode(callSuper = false, of = "sig")
 @ToString
 public class Signature extends ASTNode<ScriptLanguageParser.ArgListContext> implements Map<Variable, Type> {
     private final Map<Variable, Type> sig = new LinkedHashMap<>();
 
-    @Override public <T> T accept(Visitor<T> visitor) {
+    @Override
+    public <T> T accept(Visitor<T> visitor) {
         return visitor.visit(this);
     }
 
-    @Override public Signature copy() {
+    @Override
+    public Signature copy() {
         Signature signature = new Signature();
         forEach((k, v) -> signature.put(k.copy(), v));
         signature.setRuleContext(this.ruleContext);

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

@@ -161,15 +161,18 @@ public class Statements extends ASTNode<ScriptLanguageParser.StmtListContext>
         statements.forEach(action);
     }
 
-    @Override public String toString() {
+    @Override
+    public String toString() {
         return "Statements{" + "statements=" + statements + '}';
     }
 
-    @Override public <T> T accept(Visitor<T> visitor) {
+    @Override
+    public <T> T accept(Visitor<T> visitor) {
         return visitor.visit(this);
     }
 
-    @Override public Statements copy() {
+    @Override
+    public Statements copy() {
         Statements s = new Statements();
         forEach(e -> {
             Statement ecopy = e.copy();
@@ -180,4 +183,17 @@ public class Statements extends ASTNode<ScriptLanguageParser.StmtListContext>
         return s;
     }
 
+    @Override
+    public boolean eq(ASTNode o) {
+        if (this == o) return true;
+        if (!(o instanceof Statements)) return false;
+        if (!super.equals(o)) return false;
+        Statements that = (Statements) o;
+        for (int i = 0; i < statements.size(); i++) {
+            if (!statements.get(i).eq(that.statements.get(i))) {
+                return false;
+            }
+        }
+        return true;
+    }
 }

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

@@ -31,4 +31,6 @@ public class TryCase extends CaseStatement {
         tc.setRuleContext(this.getRuleContext());
         return tc;
     }
+
+
 }

lang/src/test/java/edu/kit/iti/formal/psdbg/parser/ASTDiffTest.java

+package edu.kit.iti.formal.psdbg.parser;
+
+import edu.kit.iti.formal.psdbg.parser.ast.ProofScript;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+
+public class ASTDiffTest {
+
+    private static final String PREFIX = "src/test/resources/edu/kit/iti/formal/psdbg/parser";
+
+    @Test
+    public void testDiff1() throws IOException {
+        List<ProofScript> o = Facade.getAST(new File(PREFIX, "test_diff_1.kps"));
+        ASTDiff astDiff = new ASTDiff();
+        ProofScript res = astDiff.diff(o.get(0), o.get(1));
+
+        assertEquals(
+                o.get(2).accept(new PrettyPrinter()),
+                res.accept(new PrettyPrinter())
+        );
+    }
+
+
+}
\ No newline at end of file

lang/src/test/resources/edu/kit/iti/formal/psdbg/parser/test_diff_1.kps

+script A() {
+    A;
+    B;
+    C;
+    D;
+}
+
+script A() {
+    A;
+    B;
+    C;
+    D;
+    E;F;
+}
+
+script A() {
+    E;F;
+}

lang/src/test/resources/edu/kit/iti/formal/psdbg/parser/test_diff_2.kps

+script A() {
+    A;
+    B;
+    C;
+    cases {
+        case x=2:
+            a;
+
+    }
+}
+
+script A() {
+    A;
+    B;
+    C;
+    F;
+}
+
+script A() {
+    E;F;
+}

rt-key/src/main/java/edu/kit/iti/formal/psdbg/interpreter/KeYProofFacade.java

@@ -71,12 +71,12 @@ public class KeYProofFacade {
     /**
      * reload the current proof. synchronously because only the first load is slow.
      */
-    public void reload() throws ProofInputException, ProblemLoaderException {
+    public void reload(File problemFile) throws ProofInputException, ProblemLoaderException {
         if (contract.get() != null) {// reinstante the contract
             setProof(getEnvironment().createProof(
                     contract.get().getProofObl(getEnvironment().getServices())));
         } else {
-            setProof(KeYApi.loadFromKeyFile(proof.get().getProofFile()).getLoadedProof().getProof());
+            setProof(KeYApi.loadFromKeyFile(problemFile).getLoadedProof().getProof());
         }
     }
 

rt-key/src/main/java/edu/kit/iti/formal/psdbg/interpreter/funchdl/RuleCommandHandler.java

@@ -16,6 +16,8 @@ import edu.kit.iti.formal.psdbg.interpreter.exceptions.ScriptCommandNotApplicabl
 import edu.kit.iti.formal.psdbg.parser.ast.CallStatement;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.key_project.util.collection.ImmutableList;
 
 import java.util.HashMap;
@@ -27,6 +29,8 @@ import java.util.Map;
  */