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Example 1 with ParseExpressionErrorResult

use of org.drools.modelcompiler.builder.errors.ParseExpressionErrorResult in project drools by kiegroup.

the class ConstraintParser method getDrlxParseResult.

private DrlxParseResult getDrlxParseResult(Class<?> patternType, String bindingId, String expression, DrlxExpression drlx, boolean isPositional) {
    Expression drlxExpr = drlx.getExpr();
    boolean isEnclosed = false;
    while (drlxExpr instanceof EnclosedExpr) {
        drlxExpr = ((EnclosedExpr) drlxExpr).getInner();
        isEnclosed = true;
    }
    if (drlxExpr instanceof MethodCallExpr && !((MethodCallExpr) drlxExpr).getScope().isPresent() && ((MethodCallExpr) drlxExpr).getNameAsString().equals("eval")) {
        drlxExpr = ((MethodCallExpr) drlxExpr).getArgument(0);
    }
    String exprId;
    if (GENERATE_EXPR_ID) {
        exprId = context.getExprId(patternType, expression);
    }
    if (drlxExpr instanceof BinaryExpr) {
        BinaryExpr binaryExpr = (BinaryExpr) drlxExpr;
        BinaryExpr.Operator operator = binaryExpr.getOperator();
        IndexUtil.ConstraintType decodeConstraintType = DrlxParseUtil.toConstraintType(operator);
        final ExpressionTyperContext expressionTyperContext = new ExpressionTyperContext();
        final ExpressionTyper expressionTyper = new ExpressionTyper(context, patternType, bindingId, isPositional, expressionTyperContext);
        TypedExpressionResult leftTypedExpressionResult = expressionTyper.toTypedExpression(binaryExpr.getLeft());
        Optional<TypedExpression> optLeft = leftTypedExpressionResult.getTypedExpression();
        if (!optLeft.isPresent()) {
            return new DrlxParseFail();
        }
        List<String> usedDeclarationsOnLeft = drlx.getBind() == null ? null : new ArrayList<>(expressionTyperContext.getUsedDeclarations());
        TypedExpressionResult rightExpressionResult = expressionTyper.toTypedExpression(binaryExpr.getRight());
        Optional<TypedExpression> optRight = rightExpressionResult.getTypedExpression();
        if (!optRight.isPresent()) {
            context.addCompilationError(new ParseExpressionErrorResult(drlxExpr));
            return new DrlxParseFail();
        }
        TypedExpression left = optLeft.get();
        TypedExpression right = optRight.get();
        Expression combo;
        if (left.isPrimitive()) {
            if (!right.getType().isPrimitive() && !Number.class.isAssignableFrom(right.getType()) && !Boolean.class.isAssignableFrom(right.getType()) && !String.class.isAssignableFrom(right.getType())) {
                context.addCompilationError(new InvalidExpressionErrorResult("Comparison operation requires compatible types. Found " + left.getType() + " and " + right.getType()));
                return new DrlxParseFail();
            }
            if (right.getExpression() instanceof StringLiteralExpr) {
                right.setExpression(new IntegerLiteralExpr(((StringLiteralExpr) right.getExpression()).asString()));
            } else if (right.getExpression() instanceof LiteralStringValueExpr) {
                right.setExpression(coerceLiteralExprToType((LiteralStringValueExpr) right.getExpression(), left.getType()));
            }
            combo = new BinaryExpr(left.getExpression(), right.getExpression(), operator);
        } else {
            coerceRightExpression(left, right);
            switch(operator) {
                case EQUALS:
                case NOT_EQUALS:
                    combo = getEqualityExpression(left, right, operator);
                    break;
                default:
                    if (left.getExpression() == null || right.getExpression() == null) {
                        context.addCompilationError(new ParseExpressionErrorResult(drlxExpr));
                        return new DrlxParseFail();
                    }
                    combo = handleSpecialComparisonCases(operator, left, right);
            }
        }
        for (Expression e : leftTypedExpressionResult.getPrefixExpressions()) {
            combo = new BinaryExpr(e, combo, BinaryExpr.Operator.AND);
        }
        boolean isBetaNode = false;
        if (right.getExpression() instanceof BinaryExpr) {
            if (((BinaryExpr) right.getExpression()).getRight() instanceof MethodCallExpr) {
                isBetaNode = true;
            }
        } else if (right.getExpression() instanceof NameExpr) {
            isBetaNode = true;
        }
        if (isEnclosed) {
            combo = new EnclosedExpr(combo);
        }
        return new DrlxParseSuccess(patternType, exprId, bindingId, combo, left.getType()).setDecodeConstraintType(decodeConstraintType).setUsedDeclarations(expressionTyperContext.getUsedDeclarations()).setUsedDeclarationsOnLeft(usedDeclarationsOnLeft).setReactOnProperties(expressionTyperContext.getReactOnProperties()).setLeft(left).setRight(right).setBetaNode(isBetaNode);
    }
    if (drlxExpr instanceof UnaryExpr) {
        UnaryExpr unaryExpr = (UnaryExpr) drlxExpr;
        TypedExpressionResult typedExpressionResult = new ExpressionTyper(context, patternType, bindingId, isPositional).toTypedExpression(unaryExpr);
        return typedExpressionResult.getTypedExpression().<DrlxParseResult>map(left -> {
            return new DrlxParseSuccess(patternType, exprId, bindingId, left.getExpression(), left.getType()).setUsedDeclarations(typedExpressionResult.getUsedDeclarations()).setReactOnProperties(typedExpressionResult.getReactOnProperties()).setLeft(left);
        }).orElse(new DrlxParseFail());
    }
    if (drlxExpr instanceof PointFreeExpr) {
        PointFreeExpr pointFreeExpr = (PointFreeExpr) drlxExpr;
        TypedExpressionResult typedExpressionResult = new ExpressionTyper(context, patternType, bindingId, isPositional).toTypedExpression(pointFreeExpr);
        final Optional<TypedExpression> optTypedExpression = typedExpressionResult.getTypedExpression();
        return optTypedExpression.<DrlxParseResult>map(typedExpression -> {
            final Expression returnExpression = typedExpression.getExpression();
            final Class<?> returnType = typedExpression.getType();
            return new DrlxParseSuccess(patternType, exprId, bindingId, returnExpression, returnType).setUsedDeclarations(typedExpressionResult.getUsedDeclarations()).setReactOnProperties(typedExpressionResult.getReactOnProperties()).setLeft(typedExpression.getLeft()).setStatic(typedExpression.isStatic()).setValidExpression(true);
        }).orElse(new DrlxParseFail());
    }
    if (drlxExpr instanceof MethodCallExpr) {
        MethodCallExpr methodCallExpr = (MethodCallExpr) drlxExpr;
        // when the methodCallExpr will be placed in the model/DSL, any parameter being a "this" need to be implemented as _this by convention.
        List<ThisExpr> rewriteThisExprs = recurseCollectArguments(methodCallExpr).stream().filter(ThisExpr.class::isInstance).map(ThisExpr.class::cast).collect(Collectors.toList());
        for (ThisExpr t : rewriteThisExprs) {
            methodCallExpr.replace(t, new NameExpr("_this"));
        }
        Optional<MethodDeclaration> functionCall = packageModel.getFunctions().stream().filter(m -> m.getName().equals(methodCallExpr.getName())).findFirst();
        if (functionCall.isPresent()) {
            Class<?> returnType = DrlxParseUtil.getClassFromContext(context.getTypeResolver(), functionCall.get().getType().asString());
            NodeList<Expression> arguments = methodCallExpr.getArguments();
            List<String> usedDeclarations = new ArrayList<>();
            for (Expression arg : arguments) {
                if (arg instanceof NameExpr && !arg.toString().equals("_this")) {
                    usedDeclarations.add(arg.toString());
                } else if (arg instanceof MethodCallExpr) {
                    TypedExpressionResult typedExpressionResult = new ExpressionTyper(context, null, bindingId, isPositional).toTypedExpression(arg);
                    usedDeclarations.addAll(typedExpressionResult.getUsedDeclarations());
                }
            }
            return new DrlxParseSuccess(patternType, exprId, bindingId, methodCallExpr, returnType).setUsedDeclarations(usedDeclarations);
        } else if (methodCallExpr.getScope().isPresent() && methodCallExpr.getScope().get() instanceof StringLiteralExpr) {
            TypedExpressionResult typedExpressionResult = new ExpressionTyper(context, String.class, bindingId, isPositional).toTypedExpression(methodCallExpr);
            Optional<TypedExpression> optConverted = typedExpressionResult.getTypedExpression();
            return optConverted.<DrlxParseResult>map(converted -> {
                return new DrlxParseSuccess(String.class, exprId, bindingId, converted.getExpression(), converted.getType()).setLeft(converted).setUsedDeclarations(typedExpressionResult.getUsedDeclarations());
            }).orElse(new DrlxParseFail());
        } else if (patternType != null) {
            NameExpr _this = new NameExpr("_this");
            TypedExpression converted = DrlxParseUtil.toMethodCallWithClassCheck(context, methodCallExpr, bindingId, patternType, context.getTypeResolver());
            Expression withThis = DrlxParseUtil.prepend(_this, converted.getExpression());
            return new DrlxParseSuccess(patternType, exprId, bindingId, withThis, converted.getType()).setLeft(converted);
        } else {
            return new DrlxParseSuccess(patternType, exprId, bindingId, methodCallExpr, null);
        }
    }
    if (drlxExpr instanceof FieldAccessExpr) {
        FieldAccessExpr fieldCallExpr = (FieldAccessExpr) drlxExpr;
        NameExpr _this = new NameExpr("_this");
        TypedExpression converted = DrlxParseUtil.toMethodCallWithClassCheck(context, fieldCallExpr, bindingId, patternType, context.getTypeResolver());
        Expression withThis = DrlxParseUtil.prepend(_this, converted.getExpression());
        return new DrlxParseSuccess(patternType, exprId, bindingId, withThis, converted.getType()).setLeft(converted);
    }
    if (drlxExpr instanceof NameExpr) {
        NameExpr nameExpr = (NameExpr) drlxExpr;
        NameExpr _this = new NameExpr("_this");
        TypedExpression converted = DrlxParseUtil.toMethodCallWithClassCheck(context, nameExpr, bindingId, patternType, context.getTypeResolver());
        Expression withThis = DrlxParseUtil.prepend(_this, converted.getExpression());
        if (drlx.getBind() != null) {
            return new DrlxParseSuccess(patternType, exprId, bindingId, null, converted.getType()).setLeft(new TypedExpression(withThis, converted.getType())).addReactOnProperty(lcFirst(nameExpr.getNameAsString()));
        } else {
            return new DrlxParseSuccess(patternType, exprId, bindingId, withThis, converted.getType()).addReactOnProperty(nameExpr.getNameAsString());
        }
    }
    if (drlxExpr instanceof OOPathExpr) {
        return new DrlxParseSuccess(patternType, exprId, bindingId, drlxExpr, null);
    }
    if (drlxExpr instanceof LiteralExpr) {
        return new DrlxParseSuccess(patternType, exprId, bindingId, drlxExpr, getLiteralExpressionType(((LiteralExpr) drlxExpr)));
    }
    // TODO
    throw new UnsupportedOperationException("Unknown expression: " + toDrlx(drlxExpr));
}
Also used : IntegerLiteralExpr(org.drools.javaparser.ast.expr.IntegerLiteralExpr) Expression(org.drools.javaparser.ast.expr.Expression) ThisExpr(org.drools.javaparser.ast.expr.ThisExpr) ClassUtil.toNonPrimitiveType(org.drools.modelcompiler.util.ClassUtil.toNonPrimitiveType) DeclarationSpec(org.drools.modelcompiler.builder.generator.DeclarationSpec) CastExpr(org.drools.javaparser.ast.expr.CastExpr) LiteralExpr(org.drools.javaparser.ast.expr.LiteralExpr) DrlxParseUtil(org.drools.modelcompiler.builder.generator.DrlxParseUtil) BinaryExpr(org.drools.javaparser.ast.expr.BinaryExpr) InvalidExpressionErrorResult(org.drools.modelcompiler.builder.errors.InvalidExpressionErrorResult) ArrayList(java.util.ArrayList) ExpressionTyperContext(org.drools.modelcompiler.builder.generator.expressiontyper.ExpressionTyperContext) BigDecimal(java.math.BigDecimal) MethodCallExpr(org.drools.javaparser.ast.expr.MethodCallExpr) 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Example 2 with ParseExpressionErrorResult

use of org.drools.modelcompiler.builder.errors.ParseExpressionErrorResult in project drools by kiegroup.

the class ExpressionTyper method nameExpr.

private Optional<TypedExpressionCursor> nameExpr(Expression drlxExpr, NameExpr firstNode, boolean isInLineCast, Class<?> originalTypeCursor) {
    Optional<TypedExpressionCursor> teCursor;
    String firstName = firstNode.getName().getIdentifier();
    Optional<DeclarationSpec> declarationById = ruleContext.getDeclarationById(firstName);
    if (declarationById.isPresent()) {
        // do NOT append any reactOnProperties.
        // because reactOnProperties is referring only to the properties of the type of the pattern, not other declarations properites.
        context.addUsedDeclarations(firstName);
        final Class<?> typeCursor;
        if (!isInLineCast) {
            typeCursor = declarationById.get().getDeclarationClass();
        } else {
            typeCursor = originalTypeCursor;
        }
        teCursor = of(new TypedExpressionCursor(new NameExpr(firstName), typeCursor));
    } else if (packageModel.getGlobals().containsKey(firstName)) {
        context.addUsedDeclarations(firstName);
        return of(new TypedExpressionCursor(new NameExpr(firstName), packageModel.getGlobals().get(firstName)));
    } else {
        final Class<?> typeCursor;
        // In OOPath a declaration is based on a position rather than a name.
        // Only an OOPath chunk can have a backreference expression
        Optional<DeclarationSpec> backReference = Optional.empty();
        if (firstNode.getBackReferencesCount() > 0) {
            List<DeclarationSpec> ooPathDeclarations = ruleContext.getOOPathDeclarations();
            DeclarationSpec backReferenceDeclaration = ooPathDeclarations.get(ooPathDeclarations.size() - 1 - firstNode.getBackReferencesCount());
            typeCursor = backReferenceDeclaration.getDeclarationClass();
            backReference = of(backReferenceDeclaration);
            context.addUsedDeclarations(backReferenceDeclaration.getBindingId());
        } else {
            typeCursor = originalTypeCursor;
        }
        Method firstAccessor = ClassUtils.getAccessor((!isInLineCast) ? typeCursor : patternType, firstName);
        if (firstAccessor != null) {
            // Hack to review - if a property is upper case it's probably not a react on property
            if (!"".equals(firstName) && Character.isLowerCase(firstName.charAt(0))) {
                context.addReactOnProperties(firstName);
            }
            final Class<?> typeOfFirstAccessor;
            if (!isInLineCast) {
                typeOfFirstAccessor = firstAccessor.getReturnType();
            } else {
                typeOfFirstAccessor = typeCursor;
            }
            NameExpr thisAccessor = new NameExpr("_this");
            final NameExpr scope = backReference.map(d -> new NameExpr(d.getBindingId())).orElse(thisAccessor);
            teCursor = of(new TypedExpressionCursor(new MethodCallExpr(scope, firstAccessor.getName()), typeOfFirstAccessor));
        } else {
            try {
                Class<?> resolvedType = ruleContext.getTypeResolver().resolveType(firstName);
                return of(new TypedExpressionCursor(null, resolvedType));
            } catch (ClassNotFoundException e) {
            // ignore
            }
            final Optional<Node> rootNode = findRootNodeViaParent(drlxExpr);
            rootNode.ifPresent(n -> {
                // In the error messages HalfBinary are transformed to Binary
                Node withHalfBinaryReplaced = replaceAllHalfBinaryChildren(n);
                ruleContext.addCompilationError(new ParseExpressionErrorResult((Expression) withHalfBinaryReplaced));
            });
            teCursor = Optional.empty();
        }
    }
    return teCursor;
}
Also used : ArrayInitializerExpr(org.drools.javaparser.ast.expr.ArrayInitializerExpr) Expression(org.drools.javaparser.ast.expr.Expression) DrlxParseUtil.findRootNodeViaParent(org.drools.modelcompiler.builder.generator.DrlxParseUtil.findRootNodeViaParent) ThisExpr(org.drools.javaparser.ast.expr.ThisExpr) DrlxParseUtil.prepend(org.drools.modelcompiler.builder.generator.DrlxParseUtil.prepend) DeclarationSpec(org.drools.modelcompiler.builder.generator.DeclarationSpec) DrlxParseUtil.getClassFromType(org.drools.modelcompiler.builder.generator.DrlxParseUtil.getClassFromType) LiteralExpr(org.drools.javaparser.ast.expr.LiteralExpr) TemporalOperatorSpec(org.drools.modelcompiler.builder.generator.operatorspec.TemporalOperatorSpec) Optional.of(java.util.Optional.of) JavaParser(org.drools.javaparser.JavaParser) LoggerFactory(org.slf4j.LoggerFactory) BinaryExpr(org.drools.javaparser.ast.expr.BinaryExpr) ClassUtils.getter2property(org.drools.core.util.ClassUtils.getter2property) ParseExpressionErrorResult(org.drools.modelcompiler.builder.errors.ParseExpressionErrorResult) CustomOperatorSpec(org.drools.modelcompiler.builder.generator.operatorspec.CustomOperatorSpec) ClassUtil(org.drools.modelcompiler.util.ClassUtil) NullSafeFieldAccessExpr(org.drools.javaparser.ast.drlx.expr.NullSafeFieldAccessExpr) FieldAccessExpr(org.drools.javaparser.ast.expr.FieldAccessExpr) PrintUtil.toDrlx(org.drools.javaparser.printer.PrintUtil.toDrlx) DrlxParseUtil.getClassFromContext(org.drools.modelcompiler.builder.generator.DrlxParseUtil.getClassFromContext) OperatorSpec(org.drools.modelcompiler.builder.generator.operatorspec.OperatorSpec) Method(java.lang.reflect.Method) PackageModel(org.drools.modelcompiler.builder.PackageModel) ArrayCreationExpr(org.drools.javaparser.ast.expr.ArrayCreationExpr) InstanceOfExpr(org.drools.javaparser.ast.expr.InstanceOfExpr) DrlxParseUtil.getExpressionType(org.drools.modelcompiler.builder.generator.DrlxParseUtil.getExpressionType) PointFreeExpr(org.drools.javaparser.ast.drlx.expr.PointFreeExpr) HalfPointFreeExpr(org.drools.javaparser.ast.drlx.expr.HalfPointFreeExpr) NameExpr(org.drools.javaparser.ast.expr.NameExpr) UnaryExpr(org.drools.javaparser.ast.expr.UnaryExpr) List(java.util.List) TypedExpression(org.drools.modelcompiler.builder.generator.TypedExpression) DrlxParseUtil.nameExprToMethodCallExpr(org.drools.modelcompiler.builder.generator.DrlxParseUtil.nameExprToMethodCallExpr) Optional(java.util.Optional) DrlxParseUtil.replaceAllHalfBinaryChildren(org.drools.modelcompiler.builder.generator.DrlxParseUtil.replaceAllHalfBinaryChildren) CastExpr(org.drools.javaparser.ast.expr.CastExpr) NullLiteralExpr(org.drools.javaparser.ast.expr.NullLiteralExpr) ArrayList(java.util.ArrayList) HalfBinaryExpr(org.drools.javaparser.ast.drlx.expr.HalfBinaryExpr) InlineCastExpr(org.drools.javaparser.ast.drlx.expr.InlineCastExpr) MethodCallExpr(org.drools.javaparser.ast.expr.MethodCallExpr) DrlxParseUtil.getLiteralExpressionType(org.drools.modelcompiler.builder.generator.DrlxParseUtil.getLiteralExpressionType) EnclosedExpr(org.drools.javaparser.ast.expr.EnclosedExpr) Logger(org.slf4j.Logger) ClassUtils(org.drools.core.util.ClassUtils) ReferenceType(org.drools.javaparser.ast.type.ReferenceType) PrintUtil(org.drools.javaparser.printer.PrintUtil) StringLiteralExpr(org.drools.javaparser.ast.expr.StringLiteralExpr) Type(org.drools.javaparser.ast.type.Type) RuleContext(org.drools.modelcompiler.builder.generator.RuleContext) NodeList(org.drools.javaparser.ast.NodeList) DrlxParseUtil.trasformHalfBinaryToBinary(org.drools.modelcompiler.builder.generator.DrlxParseUtil.trasformHalfBinaryToBinary) ModelGenerator(org.drools.modelcompiler.builder.generator.ModelGenerator) SimpleName(org.drools.javaparser.ast.expr.SimpleName) Node(org.drools.javaparser.ast.Node) Optional(java.util.Optional) Node(org.drools.javaparser.ast.Node) NameExpr(org.drools.javaparser.ast.expr.NameExpr) Method(java.lang.reflect.Method) ParseExpressionErrorResult(org.drools.modelcompiler.builder.errors.ParseExpressionErrorResult) DeclarationSpec(org.drools.modelcompiler.builder.generator.DeclarationSpec) List(java.util.List) ArrayList(java.util.ArrayList) NodeList(org.drools.javaparser.ast.NodeList) DrlxParseUtil.nameExprToMethodCallExpr(org.drools.modelcompiler.builder.generator.DrlxParseUtil.nameExprToMethodCallExpr) MethodCallExpr(org.drools.javaparser.ast.expr.MethodCallExpr)

Aggregations

ArrayList (java.util.ArrayList)2 List (java.util.List)2 Optional (java.util.Optional)2 NodeList (org.drools.javaparser.ast.NodeList)2 PointFreeExpr (org.drools.javaparser.ast.drlx.expr.PointFreeExpr)2 BinaryExpr (org.drools.javaparser.ast.expr.BinaryExpr)2 CastExpr (org.drools.javaparser.ast.expr.CastExpr)2 EnclosedExpr (org.drools.javaparser.ast.expr.EnclosedExpr)2 Expression (org.drools.javaparser.ast.expr.Expression)2 FieldAccessExpr (org.drools.javaparser.ast.expr.FieldAccessExpr)2 LiteralExpr (org.drools.javaparser.ast.expr.LiteralExpr)2 MethodCallExpr (org.drools.javaparser.ast.expr.MethodCallExpr)2 NameExpr (org.drools.javaparser.ast.expr.NameExpr)2 StringLiteralExpr (org.drools.javaparser.ast.expr.StringLiteralExpr)2 ThisExpr (org.drools.javaparser.ast.expr.ThisExpr)2 UnaryExpr (org.drools.javaparser.ast.expr.UnaryExpr)2 PrintUtil.toDrlx (org.drools.javaparser.printer.PrintUtil.toDrlx)2 PackageModel (org.drools.modelcompiler.builder.PackageModel)2 ParseExpressionErrorResult (org.drools.modelcompiler.builder.errors.ParseExpressionErrorResult)2 DeclarationSpec (org.drools.modelcompiler.builder.generator.DeclarationSpec)2