Commit c2c8707a authored by Sarah Grebing's avatar Sarah Grebing

added unary Expressions

parent 6a6706ef
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\ No newline at end of file
......@@ -5,6 +5,7 @@ import edu.kit.formal.proofscriptparser.ScriptLanguageVisitor;
import edu.kit.formatl.proofscriptparser.ast.*;
import org.antlr.v4.runtime.ParserRuleContext;
import org.antlr.v4.runtime.tree.*;
import sun.net.idn.Punycode;
import java.util.*;
......@@ -75,12 +76,19 @@ public class TransformAst implements ScriptLanguageVisitor<Object> {
return be;
}
private UnaryExpression createUnaryExpression(ParserRuleContext ctx, ScriptLanguageParser.ExpressionContext expression, Operator op){
UnaryExpression ue = new UnaryExpression();
ue.setExpression((Expression) expression.accept(this));
ue.setOperator(op);
return ue;
}
@Override public Object visitExprMinus(ScriptLanguageParser.ExprMinusContext ctx) {
throw new IllegalStateException("not implemented");
return createUnaryExpression(ctx, ctx.expression(), Operator.MINUS);
}
@Override public Object visitExprNegate(ScriptLanguageParser.ExprNegateContext ctx) {
throw new IllegalStateException("not implemented");
return createUnaryExpression(ctx, ctx.expression(), Operator.NEG);
}
@Override public Object visitExprComparison(ScriptLanguageParser.ExprComparisonContext ctx) {
......
......@@ -42,4 +42,6 @@ public interface Visitor<T> {
T visit(Signature signature);
T visit(Parameters parameters);
T visit(UnaryExpression unaryExpression);
}
......@@ -6,7 +6,7 @@ package edu.kit.formatl.proofscriptparser.ast;
*/
public enum Operator {
MULTIPLY("*"), DIVISION("/"), AND("&&"), OR("||"), IMPLICATION("==>"),
PLUS("+"), MINUS("-"), EQ("="), NEQ("<>");
PLUS("+"), MINUS("-"), EQ("="), NEQ("<>"), NEG("!");
private final String symbol;
......
package edu.kit.formatl.proofscriptparser.ast;
import edu.kit.formatl.proofscriptparser.Visitor;
import org.antlr.v4.runtime.ParserRuleContext;
/**
* Created by S.Grebing
*/
public class UnaryExpression extends Expression<ParserRuleContext>{
private Operator operator;
private Expression expression;
public UnaryExpression setOperator(Operator op){
this.operator = op;
return this;
}
public Operator getOperator() {
return operator;
}
public UnaryExpression setExpression(Expression expr){
this.expression = expr;
return this;
}
@Override
public <T> T accept(Visitor<T> visitor) {
return visitor.visit(this);
}
@Override
public ASTNode<ParserRuleContext> clone() {
return null;
}
}
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