Examples with RelationalExprDescr org.drools.compiler.lang.descr.RelationalExprDescr used on opensource projects

Example 11 with RelationalExprDescr

use of org.drools.compiler.lang.descr.RelationalExprDescr in project drools by kiegroup.

the class MVELDumper method processInlineCast.

private String[] processInlineCast(String expr, AtomicExprDescr atomicExpr, ConstraintConnectiveDescr ccd, MVELDumperContext context, int sharpPos, int parentIdx, int childIdx) {
    // convert "field1#Class.field2" in ["field1 instanceof Class && ", "((Class)field1).field2"]
    String field1 = expr.substring(0, sharpPos).trim();
    int sharpPos2 = expr.indexOf('#', sharpPos + 1);
    String part2 = sharpPos2 < 0 ? expr.substring(sharpPos + 1).trim() : expr.substring(sharpPos + 1, sharpPos2).trim();
    String[] classAndField = splitInClassAndField(part2, context);
    BaseDescr desc = parentIdx >= 0 ? ccd.getDescrs().get(parentIdx) : null;
    if (classAndField == null) {
        return new String[] { "", expr };
    } else if (desc instanceof AtomicExprDescr && classAndField.length == 1) {
        return new String[] { "", field1 + " instanceof " + classAndField[0] };
    }
    String className = classAndField[0];
    String castedExpression = classAndField.length == 1 ? "((" + className + ")" + field1 + ")" : "((" + className + ")" + field1 + ")." + classAndField[1] + (sharpPos2 > 0 ? expr.substring(sharpPos2) : "");
    RelationalExprDescr check = new RelationalExprDescr("instanceof", false, null, new AtomicExprDescr(field1), new AtomicExprDescr(className));
    if (ccd.getConnective() == ConnectiveType.AND || ccd.getConnective() == ConnectiveType.INC_AND) {
        ccd.getDescrs().add(childIdx, check);
    } else {
        if (desc instanceof ConstraintConnectiveDescr) {
            ((ConstraintConnectiveDescr) desc).getDescrs().add(childIdx, check);
        } else {
            ConstraintConnectiveDescr localAnd = new ConstraintConnectiveDescr(ConnectiveType.AND);
            BaseDescr original = ccd.getDescrs().remove(parentIdx);
            localAnd.getDescrs().add(check);
            localAnd.getDescrs().add(original);
            ccd.getDescrs().add(parentIdx, localAnd);
        }
    }
    atomicExpr.setRewrittenExpression(castedExpression);
    String innerCheck = check.toString() + " && ";
    return new String[] { innerCheck, castedExpression };
}

Example 12 with RelationalExprDescr

use of org.drools.compiler.lang.descr.RelationalExprDescr in project drools by kiegroup.

the class DRL6Expressions method equalityExpression.

// $ANTLR end "andExpression"
// $ANTLR start "equalityExpression"
// src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:299:1: equalityExpression returns [BaseDescr result] : left= instanceOfExpression ( (op= EQUALS |op= NOT_EQUALS ) right= instanceOfExpression )* ;
public final BaseDescr equalityExpression() throws RecognitionException {
    BaseDescr result = null;
    Token op = null;
    BaseDescr left = null;
    BaseDescr right = null;
    try {
        // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:300:3: (left= instanceOfExpression ( (op= EQUALS |op= NOT_EQUALS ) right= instanceOfExpression )* )
        // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:300:5: left= instanceOfExpression ( (op= EQUALS |op= NOT_EQUALS ) right= instanceOfExpression )*
        {
            pushFollow(FOLLOW_instanceOfExpression_in_equalityExpression1477);
            left = instanceOfExpression();
            state._fsp--;
            if (state.failed)
                return result;
            if (state.backtracking == 0) {
                if (buildDescr) {
                    result = left;
                }
            }
            // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:301:3: ( (op= EQUALS |op= NOT_EQUALS ) right= instanceOfExpression )*
            loop32: while (true) {
                int alt32 = 2;
                int LA32_0 = input.LA(1);
                if ((LA32_0 == EQUALS || LA32_0 == NOT_EQUALS)) {
                    alt32 = 1;
                }
                switch(alt32) {
                    case 1:
                        // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:301:5: (op= EQUALS |op= NOT_EQUALS ) right= instanceOfExpression
                        {
                            // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:301:5: (op= EQUALS |op= NOT_EQUALS )
                            int alt31 = 2;
                            int LA31_0 = input.LA(1);
                            if ((LA31_0 == EQUALS)) {
                                alt31 = 1;
                            } else if ((LA31_0 == NOT_EQUALS)) {
                                alt31 = 2;
                            } else {
                                if (state.backtracking > 0) {
                                    state.failed = true;
                                    return result;
                                }
                                NoViableAltException nvae = new NoViableAltException("", 31, 0, input);
                                throw nvae;
                            }
                            switch(alt31) {
                                case 1:
                                    // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:301:7: op= EQUALS
                                    {
                                        op = (Token) match(input, EQUALS, FOLLOW_EQUALS_in_equalityExpression1489);
                                        if (state.failed)
                                            return result;
                                    }
                                    break;
                                case 2:
                                    // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:301:19: op= NOT_EQUALS
                                    {
                                        op = (Token) match(input, NOT_EQUALS, FOLLOW_NOT_EQUALS_in_equalityExpression1495);
                                        if (state.failed)
                                            return result;
                                    }
                                    break;
                            }
                            if (state.backtracking == 0) {
                                helper.setHasOperator(true);
                                if (input.LA(1) != DRL6Lexer.EOF)
                                    helper.emit(Location.LOCATION_LHS_INSIDE_CONDITION_ARGUMENT);
                            }
                            pushFollow(FOLLOW_instanceOfExpression_in_equalityExpression1511);
                            right = instanceOfExpression();
                            state._fsp--;
                            if (state.failed)
                                return result;
                            if (state.backtracking == 0) {
                                if (buildDescr) {
                                    result = new RelationalExprDescr((op != null ? op.getText() : null), false, null, left, right);
                                }
                            }
                        }
                        break;
                    default:
                        break loop32;
                }
            }
        }
    } catch (RecognitionException re) {
        throw re;
    } finally {
    // do for sure before leaving
    }
    return result;
}

Example 13 with RelationalExprDescr

use of org.drools.compiler.lang.descr.RelationalExprDescr in project drools by kiegroup.

the class DRL6Expressions method singleRestriction.

// $ANTLR end "andRestriction"
// $ANTLR start "singleRestriction"
// src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:435:1: singleRestriction returns [BaseDescr result] : (op= operator ( ( squareArguments shiftExpression )=>sa= squareArguments value= shiftExpression |value= shiftExpression ) | LEFT_PAREN or= orRestriction RIGHT_PAREN );
public final BaseDescr singleRestriction() throws RecognitionException {
    BaseDescr result = null;
    ParserRuleReturnScope op = null;
    java.util.List<String> sa = null;
    ParserRuleReturnScope value = null;
    BaseDescr or = null;
    try {
        // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:436:3: (op= operator ( ( squareArguments shiftExpression )=>sa= squareArguments value= shiftExpression |value= shiftExpression ) | LEFT_PAREN or= orRestriction RIGHT_PAREN )
        int alt44 = 2;
        int LA44_0 = input.LA(1);
        if ((LA44_0 == EQUALS || (LA44_0 >= GREATER && LA44_0 <= GREATER_EQUALS) || (LA44_0 >= LESS && LA44_0 <= LESS_EQUALS) || LA44_0 == NOT_EQUALS || LA44_0 == TILDE)) {
            alt44 = 1;
        } else if ((LA44_0 == ID) && ((((helper.validateIdentifierKey(DroolsSoftKeywords.NOT))) || ((helper.isPluggableEvaluator(false)))))) {
            alt44 = 1;
        } else if ((LA44_0 == LEFT_PAREN)) {
            alt44 = 2;
        } else {
            if (state.backtracking > 0) {
                state.failed = true;
                return result;
            }
            NoViableAltException nvae = new NoViableAltException("", 44, 0, input);
            throw nvae;
        }
        switch(alt44) {
            case 1:
                // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:436:6: op= operator ( ( squareArguments shiftExpression )=>sa= squareArguments value= shiftExpression |value= shiftExpression )
                {
                    pushFollow(FOLLOW_operator_in_singleRestriction2045);
                    op = operator();
                    state._fsp--;
                    if (state.failed)
                        return result;
                    if (state.backtracking == 0) {
                        helper.emit(Location.LOCATION_LHS_INSIDE_CONDITION_ARGUMENT);
                    }
                    // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:438:6: ( ( squareArguments shiftExpression )=>sa= squareArguments value= shiftExpression |value= shiftExpression )
                    int alt43 = 2;
                    int LA43_0 = input.LA(1);
                    if ((LA43_0 == LEFT_SQUARE)) {
                        int LA43_1 = input.LA(2);
                        if ((synpred12_DRL6Expressions())) {
                            alt43 = 1;
                        } else if ((true)) {
                            alt43 = 2;
                        }
                    } else if ((LA43_0 == BOOL || (LA43_0 >= DECIMAL && LA43_0 <= DIV) || LA43_0 == DOT || LA43_0 == FLOAT || LA43_0 == HEX || (LA43_0 >= ID && LA43_0 <= INCR) || LA43_0 == LEFT_PAREN || LA43_0 == LESS || LA43_0 == MINUS || LA43_0 == NEGATION || LA43_0 == NULL || LA43_0 == PLUS || LA43_0 == QUESTION_DIV || (LA43_0 >= STAR && LA43_0 <= TIME_INTERVAL))) {
                        alt43 = 2;
                    } else {
                        if (state.backtracking > 0) {
                            state.failed = true;
                            return result;
                        }
                        NoViableAltException nvae = new NoViableAltException("", 43, 0, input);
                        throw nvae;
                    }
                    switch(alt43) {
                        case 1:
                            // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:438:8: ( squareArguments shiftExpression )=>sa= squareArguments value= shiftExpression
                            {
                                pushFollow(FOLLOW_squareArguments_in_singleRestriction2074);
                                sa = squareArguments();
                                state._fsp--;
                                if (state.failed)
                                    return result;
                                pushFollow(FOLLOW_shiftExpression_in_singleRestriction2078);
                                value = shiftExpression();
                                state._fsp--;
                                if (state.failed)
                                    return result;
                            }
                            break;
                        case 2:
                            // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:439:10: value= shiftExpression
                            {
                                pushFollow(FOLLOW_shiftExpression_in_singleRestriction2091);
                                value = shiftExpression();
                                state._fsp--;
                                if (state.failed)
                                    return result;
                            }
                            break;
                    }
                    if (state.backtracking == 0) {
                        if (buildDescr) {
                            BaseDescr descr = ((value != null ? ((DRL6Expressions.shiftExpression_return) value).result : null) != null && ((!((value != null ? ((DRL6Expressions.shiftExpression_return) value).result : null) instanceof AtomicExprDescr)) || ((value != null ? input.toString(value.start, value.stop) : null).equals(((AtomicExprDescr) (value != null ? ((DRL6Expressions.shiftExpression_return) value).result : null)).getExpression())))) ? (value != null ? ((DRL6Expressions.shiftExpression_return) value).result : null) : new AtomicExprDescr((value != null ? input.toString(value.start, value.stop) : null));
                            result = new RelationalExprDescr((op != null ? ((DRL6Expressions.operator_return) op).opr : null), (op != null ? ((DRL6Expressions.operator_return) op).negated : false), sa, relationalExpression_stack.peek().lsd, descr);
                            if (relationalExpression_stack.peek().lsd instanceof BindingDescr) {
                                relationalExpression_stack.peek().lsd = new AtomicExprDescr(((BindingDescr) relationalExpression_stack.peek().lsd).getExpression());
                            }
                        }
                        helper.emit(Location.LOCATION_LHS_INSIDE_CONDITION_END);
                    }
                }
                break;
            case 2:
                // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:454:6: LEFT_PAREN or= orRestriction RIGHT_PAREN
                {
                    match(input, LEFT_PAREN, FOLLOW_LEFT_PAREN_in_singleRestriction2116);
                    if (state.failed)
                        return result;
                    pushFollow(FOLLOW_orRestriction_in_singleRestriction2120);
                    or = orRestriction();
                    state._fsp--;
                    if (state.failed)
                        return result;
                    match(input, RIGHT_PAREN, FOLLOW_RIGHT_PAREN_in_singleRestriction2122);
                    if (state.failed)
                        return result;
                    if (state.backtracking == 0) {
                        result = or;
                    }
                }
                break;
        }
    } catch (RecognitionException re) {
        throw re;
    } finally {
    // do for sure before leaving
    }
    return result;
}

Example 14 with RelationalExprDescr

use of org.drools.compiler.lang.descr.RelationalExprDescr in project drools by kiegroup.

the class DRL6Expressions method instanceOfExpression.

// $ANTLR end "equalityExpression"
// $ANTLR start "instanceOfExpression"
// src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:312:1: instanceOfExpression returns [BaseDescr result] : left= inExpression (op= instanceof_key right= type )? ;
public final BaseDescr instanceOfExpression() throws RecognitionException {
    BaseDescr result = null;
    BaseDescr left = null;
    ParserRuleReturnScope op = null;
    ParserRuleReturnScope right = null;
    try {
        // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:313:3: (left= inExpression (op= instanceof_key right= type )? )
        // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:313:5: left= inExpression (op= instanceof_key right= type )?
        {
            pushFollow(FOLLOW_inExpression_in_instanceOfExpression1546);
            left = inExpression();
            state._fsp--;
            if (state.failed)
                return result;
            if (state.backtracking == 0) {
                if (buildDescr) {
                    result = left;
                }
            }
            // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:314:3: (op= instanceof_key right= type )?
            int alt33 = 2;
            int LA33_0 = input.LA(1);
            if ((LA33_0 == ID)) {
                int LA33_1 = input.LA(2);
                if ((LA33_1 == ID) && (((helper.validateIdentifierKey(DroolsSoftKeywords.INSTANCEOF))))) {
                    alt33 = 1;
                }
            }
            switch(alt33) {
                case 1:
                    // src/main/resources/org/drools/compiler/lang/DRL6Expressions.g:314:5: op= instanceof_key right= type
                    {
                        pushFollow(FOLLOW_instanceof_key_in_instanceOfExpression1556);
                        op = instanceof_key();
                        state._fsp--;
                        if (state.failed)
                            return result;
                        if (state.backtracking == 0) {
                            helper.setHasOperator(true);
                            if (input.LA(1) != DRL6Lexer.EOF)
                                helper.emit(Location.LOCATION_LHS_INSIDE_CONDITION_ARGUMENT);
                        }
                        pushFollow(FOLLOW_type_in_instanceOfExpression1570);
                        right = type();
                        state._fsp--;
                        if (state.failed)
                            return result;
                        if (state.backtracking == 0) {
                            if (buildDescr) {
                                result = new RelationalExprDescr((op != null ? input.toString(op.start, op.stop) : null), false, null, left, new AtomicExprDescr((right != null ? input.toString(right.start, right.stop) : null)));
                            }
                        }
                    }
                    break;
            }
        }
    } catch (RecognitionException re) {
        throw re;
    } finally {
    // do for sure before leaving
    }
    return result;
}

Example 15 with RelationalExprDescr

use of org.drools.compiler.lang.descr.RelationalExprDescr in project drools by kiegroup.

the class MVELDumper method processNullSafeDereferencing.

private String[] processNullSafeDereferencing(String expr, AtomicExprDescr atomicExpr, ConstraintConnectiveDescr ccd, int nullSafePos, int parentIdx, int childIdx) {
    // convert "field1!.field2" in ["field1 != null && ", "field1.field2"]
    String field1 = expr.substring(0, nullSafePos).trim();
    expr = field1 + "." + expr.substring(nullSafePos + 2).trim();
    RelationalExprDescr check = new RelationalExprDescr("!=", false, null, new AtomicExprDescr(getPreconditionsToAppend(field1)), new AtomicExprDescr("null"));
    if (ccd.getConnective() == ConnectiveType.AND || ccd.getConnective() == ConnectiveType.INC_AND) {
        ccd.getDescrs().add(childIdx, check);
    } else {
        BaseDescr desc = ccd.getDescrs().get(parentIdx);
        if (desc instanceof ConstraintConnectiveDescr) {
            ((ConstraintConnectiveDescr) desc).getDescrs().add(childIdx, check);
        } else {
            ConstraintConnectiveDescr localAnd = new ConstraintConnectiveDescr(ConnectiveType.AND);
            BaseDescr original = ccd.getDescrs().remove(parentIdx);
            localAnd.getDescrs().add(check);
            localAnd.getDescrs().add(original);
            ccd.getDescrs().add(parentIdx, localAnd);
        }
    }
    String innerCheck = check.toString() + " && ";
    String[] nullCheckAndExpr = new String[] { innerCheck, expr };
    atomicExpr.setRewrittenExpression(expr);
    return nullCheckAndExpr;
}