How to use

getExpression

method

in

org.kie.dmn.feel.lang.ast.SignedUnaryNode

@Override
public DirectCompilerResult visit(SignedUnaryNode n) {
  DirectCompilerResult result = n.getExpression().accept(this);
  if (n.getSign() == SignedUnaryNode.Sign.NEGATIVE) {
    return DirectCompilerResult.of(
        Expressions.negate(result.getExpression()),
        result.resultType,
        result.getFieldDeclarations());
  } else {
    return result;
  }
}

@Test
public void testNegativeFloatLiteral() {
  String inputExpression = "-10.5";
  BaseNode number = parse( inputExpression );
  assertThat( number, is( instanceOf( SignedUnaryNode.class ) ) );
  assertThat( number.getResultType(), is( BuiltInType.NUMBER ) );
  assertLocation( inputExpression, number );
  SignedUnaryNode sun = (SignedUnaryNode) number;
  assertThat( sun.getSign(), is( SignedUnaryNode.Sign.NEGATIVE ) );
  assertThat( sun.getExpression(), is( instanceOf( NumberNode.class ) ) );
  assertThat( sun.getExpression().getText(), is( "10.5" ) );
}

@Test
public void testPositiveIntegerLiteral() {
  String inputExpression = "+10";
  BaseNode number = parse( inputExpression );
  assertThat( number, is( instanceOf( SignedUnaryNode.class ) ) );
  assertThat( number.getResultType(), is( BuiltInType.NUMBER ) );
  assertLocation( inputExpression, number );
  SignedUnaryNode sun = (SignedUnaryNode) number;
  assertThat( sun.getSign(), is( SignedUnaryNode.Sign.POSITIVE ) );
  assertThat( sun.getExpression(), is( instanceOf( NumberNode.class ) ) );
  assertThat( sun.getExpression().getText(), is( "10" ) );
}

@Test
public void testPositiveFloatLiteral() {
  String inputExpression = "+10.5";
  BaseNode number = parse( inputExpression );
  assertThat( number, is( instanceOf( SignedUnaryNode.class ) ) );
  assertThat( number.getResultType(), is( BuiltInType.NUMBER ) );
  assertLocation( inputExpression, number );
  SignedUnaryNode sun = (SignedUnaryNode) number;
  assertThat( sun.getSign(), is( SignedUnaryNode.Sign.POSITIVE ) );
  assertThat( sun.getExpression(), is( instanceOf( NumberNode.class ) ) );
  assertThat( sun.getExpression().getText(), is( "10.5" ) );
}

@Test
public void testNegativeIntegerLiteral() {
  String inputExpression = "-10";
  BaseNode number = parse( inputExpression );
  assertThat( number, is( instanceOf( SignedUnaryNode.class ) ) );
  assertThat( number.getResultType(), is( BuiltInType.NUMBER ) );
  assertLocation( inputExpression, number );
  SignedUnaryNode sun = (SignedUnaryNode) number;
  assertThat( sun.getSign(), is( SignedUnaryNode.Sign.NEGATIVE ) );
  assertThat( sun.getExpression(), is( instanceOf( NumberNode.class ) ) );
  assertThat( sun.getExpression().getText(), is( "10" ) );
}