Examples with HalfBinaryExpr org.drools.mvel.parser.ast.expr.HalfBinaryExpr used on opensource projects

Example 1 with HalfBinaryExpr

use of org.drools.mvel.parser.ast.expr.HalfBinaryExpr in project drools by kiegroup.

the class ExpressionTyper method toTypedExpressionRec.

private Optional<TypedExpression> toTypedExpressionRec(Expression drlxExpr) {
    Class<?> typeCursor = patternType;
    if (drlxExpr instanceof FullyQualifiedInlineCastExpr) {
        return toTypedExpressionRec(transformFullyQualifiedInlineCastExpr(ruleContext.getTypeResolver(), (FullyQualifiedInlineCastExpr) drlxExpr));
    }
    if (drlxExpr instanceof EnclosedExpr) {
        Expression inner = ((EnclosedExpr) drlxExpr).getInner();
        Optional<TypedExpression> typedExpression = toTypedExpressionRec(inner);
        return typedExpression.map(t -> t.cloneWithNewExpression(new EnclosedExpr(t.getExpression())));
    }
    if (drlxExpr instanceof MethodCallExpr) {
        MethodCallExpr methodExpr = (MethodCallExpr) drlxExpr;
        Expression expr = methodExpr;
        if (isEval(methodExpr.getNameAsString(), methodExpr.getScope(), methodExpr.getArguments())) {
            expr = methodExpr.getArgument(0);
        }
        drlxExpr = expr;
    }
    if (drlxExpr instanceof NullSafeMethodCallExpr) {
        NullSafeMethodCallExpr methodExpr = (NullSafeMethodCallExpr) drlxExpr;
        Expression expr = methodExpr;
        if (isEval(methodExpr.getNameAsString(), methodExpr.getScope(), methodExpr.getArguments())) {
            expr = methodExpr.getArgument(0);
        }
        drlxExpr = expr;
    }
    if (drlxExpr instanceof UnaryExpr) {
        UnaryExpr unaryExpr = (UnaryExpr) drlxExpr;
        Optional<TypedExpression> optTypedExpr = toTypedExpressionRec(unaryExpr.getExpression());
        return optTypedExpr.map(typedExpr -> new TypedExpression(new UnaryExpr(typedExpr.getExpression(), unaryExpr.getOperator()), typedExpr.getType()));
    }
    if (drlxExpr instanceof BinaryExpr) {
        BinaryExpr binaryExpr = (BinaryExpr) drlxExpr;
        BinaryExpr.Operator operator = binaryExpr.getOperator();
        Optional<TypedExpression> optLeft = toTypedExpressionRec(binaryExpr.getLeft());
        Optional<TypedExpression> optRight = toTypedExpressionRec(binaryExpr.getRight());
        return optLeft.flatMap(left -> optRight.flatMap(right -> {
            final BinaryExpr combo = new BinaryExpr(left.getExpression(), right.getExpression(), operator);
            return of(new TypedExpression(combo, left.getType()));
        }));
    }
    if (drlxExpr instanceof HalfBinaryExpr) {
        final Expression binaryExpr = trasformHalfBinaryToBinary(drlxExpr);
        if (binaryExpr instanceof BinaryExpr && ((BinaryExpr) binaryExpr).getLeft() == drlxExpr) {
            throw new CannotTypeExpressionException("left leaf is the same : drlxExpr = " + drlxExpr + ", originalExpression = " + context.getOriginalExpression());
        }
        return toTypedExpressionRec(binaryExpr);
    }
    if (drlxExpr instanceof LiteralExpr) {
        drlxExpr = normalizeDigit(drlxExpr);
        return of(new TypedExpression(drlxExpr, getLiteralExpressionType((LiteralExpr) drlxExpr)));
    }
    if (drlxExpr instanceof ThisExpr || (drlxExpr instanceof NameExpr && THIS_PLACEHOLDER.equals(printNode(drlxExpr)))) {
        return of(new TypedExpression(new NameExpr(THIS_PLACEHOLDER), patternType));
    }
    if (drlxExpr instanceof CastExpr) {
        CastExpr castExpr = (CastExpr) drlxExpr;
        Optional<TypedExpression> optTypedExpr = toTypedExpressionRec(castExpr.getExpression());
        return optTypedExpr.map(typedExpr -> new TypedExpression(new CastExpr(castExpr.getType(), typedExpr.getExpression()), getClassFromContext(ruleContext.getTypeResolver(), castExpr.getType().asString())));
    }
    if (drlxExpr instanceof NameExpr) {
        return nameExpr(((NameExpr) drlxExpr).getNameAsString(), typeCursor);
    }
    if (drlxExpr instanceof FieldAccessExpr || drlxExpr instanceof MethodCallExpr || drlxExpr instanceof ObjectCreationExpr || drlxExpr instanceof NullSafeFieldAccessExpr || drlxExpr instanceof NullSafeMethodCallExpr || drlxExpr instanceof MapCreationLiteralExpression || drlxExpr instanceof ListCreationLiteralExpression) {
        return toTypedExpressionFromMethodCallOrField(drlxExpr).getTypedExpression();
    }
    if (drlxExpr instanceof PointFreeExpr) {
        final PointFreeExpr pointFreeExpr = (PointFreeExpr) drlxExpr;
        Optional<TypedExpression> optLeft = toTypedExpressionRec(pointFreeExpr.getLeft());
        Optional<TypedExpression> optRight = pointFreeExpr.getRight().size() == 1 ? toTypedExpressionRec(pointFreeExpr.getRight().get(0)) : Optional.empty();
        OperatorSpec opSpec = getOperatorSpec(pointFreeExpr.getRight(), pointFreeExpr.getOperator());
        return optLeft.map(left -> new TypedExpression(opSpec.getExpression(ruleContext, pointFreeExpr, left, this), left.getType()).setStatic(opSpec.isStatic()).setLeft(left).setRight(optRight.orElse(null)));
    }
    if (drlxExpr instanceof HalfPointFreeExpr) {
        final HalfPointFreeExpr halfPointFreeExpr = (HalfPointFreeExpr) drlxExpr;
        Expression parentLeft = findLeftLeafOfNameExprTraversingParent(halfPointFreeExpr);
        if (parentLeft == halfPointFreeExpr) {
            throw new CannotTypeExpressionException("left leaf is the same : halfPointFreeExpr = " + halfPointFreeExpr + ", originalExpression = " + context.getOriginalExpression());
        }
        Optional<TypedExpression> optLeft = toTypedExpressionRec(parentLeft);
        OperatorSpec opSpec = getOperatorSpec(halfPointFreeExpr.getRight(), halfPointFreeExpr.getOperator());
        final PointFreeExpr transformedToPointFree = new PointFreeExpr(halfPointFreeExpr.getTokenRange().orElseThrow(() -> new IllegalStateException("Token range is not present!")), parentLeft, halfPointFreeExpr.getRight(), halfPointFreeExpr.getOperator(), halfPointFreeExpr.isNegated(), halfPointFreeExpr.getArg1(), halfPointFreeExpr.getArg2(), halfPointFreeExpr.getArg3(), halfPointFreeExpr.getArg4());
        return optLeft.map(left -> new TypedExpression(opSpec.getExpression(ruleContext, transformedToPointFree, left, this), left.getType()).setStatic(opSpec.isStatic()).setLeft(left));
    }
    if (drlxExpr instanceof ArrayAccessExpr) {
        final ArrayAccessExpr arrayAccessExpr = (ArrayAccessExpr) drlxExpr;
        if (Map.class.isAssignableFrom(typeCursor)) {
            return createMapAccessExpression(arrayAccessExpr.getIndex(), arrayAccessExpr.getName() instanceof ThisExpr ? new NameExpr(THIS_PLACEHOLDER) : arrayAccessExpr.getName(), Map.class);
        } else if (arrayAccessExpr.getName() instanceof FieldAccessExpr) {
            Optional<TypedExpression> typedExpression = toTypedExpressionFromMethodCallOrField(drlxExpr).getTypedExpression();
            typedExpression.ifPresent(te -> {
                final Expression originalExpression = te.getExpression();
                DrlxParseUtil.removeRootNode(originalExpression);
            });
            return typedExpression;
        } else {
            String name = printNode(drlxExpr.asArrayAccessExpr().getName());
            final Optional<TypedExpression> nameExpr = nameExpr(name, typeCursor);
            Expression indexExpr = toTypedExpressionFromMethodCallOrField(arrayAccessExpr.getIndex()).getTypedExpression().orElseThrow(() -> new NoSuchElementException("TypedExpressionResult doesn't contain TypedExpression!")).getExpression();
            return nameExpr.flatMap(te -> transformToArrayOrMapExpressionWithType(indexExpr, te));
        }
    }
    if (drlxExpr instanceof InstanceOfExpr) {
        InstanceOfExpr instanceOfExpr = (InstanceOfExpr) drlxExpr;
        ruleContext.addInlineCastType(printNode(instanceOfExpr.getExpression()), instanceOfExpr.getType());
        return toTypedExpressionRec(instanceOfExpr.getExpression()).map(e -> new TypedExpression(new InstanceOfExpr(e.getExpression(), instanceOfExpr.getType()), boolean.class));
    }
    if (drlxExpr instanceof ClassExpr) {
        return of(new TypedExpression(drlxExpr, Class.class));
    }
    if (drlxExpr instanceof InlineCastExpr) {
        return toTypedExpressionFromMethodCallOrField(drlxExpr).getTypedExpression();
    }
    if (drlxExpr instanceof OOPathExpr) {
        Class<?> type = patternType;
        for (OOPathChunk chunk : ((OOPathExpr) drlxExpr).getChunks()) {
            final String fieldName = chunk.getField().toString();
            final TypedExpression callExpr = DrlxParseUtil.nameExprToMethodCallExpr(fieldName, type, null, ruleContext);
            if (callExpr == null) {
                return empty();
            }
            Class<?> fieldType = (chunk.getInlineCast() != null) ? DrlxParseUtil.getClassFromContext(ruleContext.getTypeResolver(), chunk.getInlineCast().toString()) : callExpr.getRawClass();
            if (!chunk.isSingleValue() && Iterable.class.isAssignableFrom(fieldType) || isDataSource(fieldType)) {
                type = extractGenericType(type, ((MethodCallExpr) callExpr.getExpression()).getName().toString());
            } else {
                type = fieldType;
            }
        }
        return of(new TypedExpression(drlxExpr, type));
    }
    if (drlxExpr.isAssignExpr()) {
        AssignExpr assignExpr = drlxExpr.asAssignExpr();
        final Expression rightSide = assignExpr.getValue();
        return toTypedExpressionRec(rightSide).map(e -> {
            final AssignExpr newExpression = new AssignExpr(assignExpr.getTarget(), e.getExpression(), assignExpr.getOperator());
            return new TypedExpression(newExpression, e.getType());
        });
    }
    throw new UnsupportedOperationException();
}

Example 2 with HalfBinaryExpr

use of org.drools.mvel.parser.ast.expr.HalfBinaryExpr in project drools by kiegroup.

the class DroolsMvelParserTest method testAndWithImplicitParameterAndParenthesisComplexOnNullSafeField.

@Test
public void testAndWithImplicitParameterAndParenthesisComplexOnNullSafeField() {
    String expr = "value!.length ((> 1 && < 2) || (> 3 && < 4))";
    Expression expression = parseExpression(parser, expr).getExpr();
    BinaryExpr comboExpr = ((BinaryExpr) expression);
    assertEquals(Operator.OR, comboExpr.getOperator());
    BinaryExpr comboExprLeft = ((BinaryExpr) comboExpr.getLeft());
    assertEquals(Operator.AND, comboExprLeft.getOperator());
    BinaryExpr first = (BinaryExpr) comboExprLeft.getLeft();
    assertTrue(first.getLeft() instanceof NullSafeFieldAccessExpr);
    assertEquals("value!.length", toString(first.getLeft()));
    assertEquals("1", toString(first.getRight()));
    assertEquals(Operator.GREATER, first.getOperator());
    HalfBinaryExpr second = (HalfBinaryExpr) comboExprLeft.getRight();
    assertEquals("2", toString(second.getRight()));
    assertEquals(HalfBinaryExpr.Operator.LESS, second.getOperator());
    BinaryExpr comboExprRight = ((BinaryExpr) comboExpr.getRight());
    assertEquals(Operator.AND, comboExprRight.getOperator());
    BinaryExpr third = (BinaryExpr) comboExprRight.getLeft();
    assertEquals("value!.length", toString(third.getLeft()));
    assertEquals("3", toString(third.getRight()));
    assertEquals(Operator.GREATER, third.getOperator());
    HalfBinaryExpr forth = (HalfBinaryExpr) comboExprRight.getRight();
    assertEquals("4", toString(forth.getRight()));
    assertEquals(HalfBinaryExpr.Operator.LESS, forth.getOperator());
}

Example 3 with HalfBinaryExpr

use of org.drools.mvel.parser.ast.expr.HalfBinaryExpr in project drools by kiegroup.

the class DroolsMvelParserTest method testAndWithImplicitParameter2.

@Test
public void testAndWithImplicitParameter2() {
    String expr = "name == \"Mark\" && == \"Mario\" || == \"Luca\"";
    Expression expression = parseExpression(parser, expr).getExpr();
    BinaryExpr comboExpr = ((BinaryExpr) expression);
    assertEquals(Operator.OR, comboExpr.getOperator());
    assertEquals(Operator.AND, ((BinaryExpr) (comboExpr.getLeft())).getOperator());
    BinaryExpr first = ((BinaryExpr) ((BinaryExpr) comboExpr.getLeft()).getLeft());
    assertEquals("name", toString(first.getLeft()));
    assertEquals("\"Mark\"", toString(first.getRight()));
    assertEquals(Operator.EQUALS, first.getOperator());
    HalfBinaryExpr second = (HalfBinaryExpr) ((BinaryExpr) comboExpr.getLeft()).getRight();
    assertEquals("\"Mario\"", toString(second.getRight()));
    assertEquals(HalfBinaryExpr.Operator.EQUALS, second.getOperator());
    HalfBinaryExpr third = (HalfBinaryExpr) comboExpr.getRight();
    assertEquals("\"Luca\"", toString(third.getRight()));
    assertEquals(HalfBinaryExpr.Operator.EQUALS, third.getOperator());
}

Example 4 with HalfBinaryExpr

use of org.drools.mvel.parser.ast.expr.HalfBinaryExpr in project drools by kiegroup.

the class DroolsMvelParserTest method testAndWithImplicitParameter3.

@Test
public void testAndWithImplicitParameter3() {
    String expr = "age == 2 && == 3 || == 4";
    Expression expression = parseExpression(parser, expr).getExpr();
    BinaryExpr comboExpr = ((BinaryExpr) expression);
    assertEquals(Operator.OR, comboExpr.getOperator());
    assertEquals(Operator.AND, ((BinaryExpr) (comboExpr.getLeft())).getOperator());
    BinaryExpr first = ((BinaryExpr) ((BinaryExpr) comboExpr.getLeft()).getLeft());
    assertEquals("age", toString(first.getLeft()));
    assertEquals("2", toString(first.getRight()));
    assertEquals(Operator.EQUALS, first.getOperator());
    HalfBinaryExpr second = (HalfBinaryExpr) ((BinaryExpr) comboExpr.getLeft()).getRight();
    assertEquals("3", toString(second.getRight()));
    assertEquals(HalfBinaryExpr.Operator.EQUALS, second.getOperator());
    HalfBinaryExpr third = (HalfBinaryExpr) comboExpr.getRight();
    assertEquals("4", toString(third.getRight()));
    assertEquals(HalfBinaryExpr.Operator.EQUALS, third.getOperator());
}

Example 5 with HalfBinaryExpr

use of org.drools.mvel.parser.ast.expr.HalfBinaryExpr in project drools by kiegroup.

the class DroolsMvelParserTest method testAndWithImplicitParameterAndParenthesis.

@Test
public void testAndWithImplicitParameterAndParenthesis() {
    String expr = "value (> 1 && < 2)";
    Expression expression = parseExpression(parser, expr).getExpr();
    BinaryExpr comboExpr = ((BinaryExpr) expression);
    assertEquals(Operator.AND, comboExpr.getOperator());
    BinaryExpr first = (BinaryExpr) comboExpr.getLeft();
    assertEquals("value", toString(first.getLeft()));
    assertEquals("1", toString(first.getRight()));
    assertEquals(Operator.GREATER, first.getOperator());
    HalfBinaryExpr second = (HalfBinaryExpr) comboExpr.getRight();
    assertEquals("2", toString(second.getRight()));
    assertEquals(HalfBinaryExpr.Operator.LESS, second.getOperator());
}