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

Example 16 with OrDescr

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

the class DRL5Parser method lhsPatternBind.

/**
 * lhsPatternBind := label?
 *                ( LEFT_PAREN lhsPattern (OR lhsPattern)* RIGHT_PAREN
 *                | lhsPattern )
 *
 * @param ce
 * @return
 * @throws RecognitionException
 */
@SuppressWarnings("unchecked")
private BaseDescr lhsPatternBind(PatternContainerDescrBuilder<?, ?> ce, final boolean allowOr) throws RecognitionException {
    PatternDescrBuilder<?> pattern = null;
    CEDescrBuilder<?, OrDescr> or = null;
    BaseDescr result = null;
    Token first = input.LT(1);
    pattern = helper.start((DescrBuilder<?, ?>) ce, PatternDescrBuilder.class, null);
    if (pattern != null) {
        result = pattern.getDescr();
    }
    String label = null;
    boolean isUnification = false;
    if (input.LA(1) == DRL5Lexer.ID && input.LA(2) == DRL5Lexer.COLON && !helper.validateCEKeyword(1)) {
        label = label(DroolsEditorType.IDENTIFIER_PATTERN);
        if (state.failed)
            return null;
    } else if (input.LA(1) == DRL5Lexer.ID && input.LA(2) == DRL5Lexer.UNIFY && !helper.validateCEKeyword(1)) {
        label = unif(DroolsEditorType.IDENTIFIER_PATTERN);
        if (state.failed)
            return null;
        isUnification = true;
    }
    if (input.LA(1) == DRL5Lexer.LEFT_PAREN) {
        try {
            match(input, DRL5Lexer.LEFT_PAREN, null, null, DroolsEditorType.SYMBOL);
            if (state.failed)
                return null;
            if (helper.validateCEKeyword(1)) {
                failMismatchedTokenException();
                // in case it is backtracking
                return null;
            }
            lhsPattern(pattern, label, isUnification);
            if (state.failed)
                return null;
            if (allowOr && helper.validateIdentifierKey(DroolsSoftKeywords.OR) && ce instanceof CEDescrBuilder) {
                if (state.backtracking == 0) {
                    // this is necessary because of the crappy bind with multi-pattern OR syntax
                    or = ((CEDescrBuilder<DescrBuilder<?, ?>, OrDescr>) ce).or();
                    result = or.getDescr();
                    helper.end(PatternDescrBuilder.class, pattern);
                    helper.start(or, CEDescrBuilder.class, null);
                    // adjust real or starting token:
                    helper.setStart(or, first);
                    // remove original pattern from the parent CE child list:
                    ((ConditionalElementDescr) ce.getDescr()).getDescrs().remove(pattern.getDescr());
                    // add pattern to the OR instead
                    or.getDescr().addDescr(pattern.getDescr());
                }
                while (helper.validateIdentifierKey(DroolsSoftKeywords.OR)) {
                    match(input, DRL5Lexer.ID, DroolsSoftKeywords.OR, null, DroolsEditorType.KEYWORD);
                    if (state.failed)
                        return null;
                    pattern = helper.start(or, PatternDescrBuilder.class, null);
                    // new pattern, same binding
                    lhsPattern(pattern, label, isUnification);
                    if (state.failed)
                        return null;
                    helper.end(PatternDescrBuilder.class, pattern);
                }
            }
            match(input, DRL5Lexer.RIGHT_PAREN, null, null, DroolsEditorType.SYMBOL);
            if (state.failed)
                return null;
        } finally {
            if (or != null) {
                helper.end(CEDescrBuilder.class, or);
            } else {
                helper.end(PatternDescrBuilder.class, pattern);
            }
        }
    } else {
        try {
            lhsPattern(pattern, label, isUnification);
            if (state.failed)
                return null;
        } finally {
            helper.end(PatternDescrBuilder.class, pattern);
        }
    }
    return result;
}

Example 17 with OrDescr

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

the class DRL5Parser method lhsOr.

/**
 * lhsOr := LEFT_PAREN OR lhsAnd+ RIGHT_PAREN
 *        | lhsAnd (OR lhsAnd)*
 *
 * @param ce
 * @param allowOr
 * @throws RecognitionException
 */
private BaseDescr lhsOr(final CEDescrBuilder<?, ?> ce, boolean allowOr) throws RecognitionException {
    BaseDescr result = null;
    if (allowOr && input.LA(1) == DRL5Lexer.LEFT_PAREN && helper.validateLT(2, DroolsSoftKeywords.OR)) {
        // prefixed OR
        CEDescrBuilder<?, OrDescr> or = null;
        if (state.backtracking == 0) {
            or = ce.or();
            result = or.getDescr();
            helper.start(or, CEDescrBuilder.class, null);
        }
        try {
            match(input, DRL5Lexer.LEFT_PAREN, null, null, DroolsEditorType.SYMBOL);
            if (state.failed)
                return null;
            match(input, DRL5Lexer.ID, DroolsSoftKeywords.OR, null, DroolsEditorType.KEYWORD);
            if (state.failed)
                return null;
            while (input.LA(1) == DRL5Lexer.AT) {
                // annotation*
                annotation(or);
                if (state.failed)
                    return null;
            }
            if (state.backtracking == 0) {
                helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION_AND_OR);
            }
            while (input.LA(1) != DRL5Lexer.RIGHT_PAREN) {
                lhsAnd(or, allowOr);
                if (state.failed)
                    return null;
            }
            match(input, DRL5Lexer.RIGHT_PAREN, null, null, DroolsEditorType.SYMBOL);
            if (state.failed)
                return null;
        } finally {
            if (state.backtracking == 0) {
                helper.end(CEDescrBuilder.class, or);
            }
        }
    } else {
        // infix OR
        // create an OR anyway, as if it is not an OR we remove it later
        CEDescrBuilder<?, OrDescr> or = null;
        if (state.backtracking == 0) {
            or = ce.or();
            result = or.getDescr();
            helper.start(or, CEDescrBuilder.class, null);
        }
        try {
            lhsAnd(or, allowOr);
            if (state.failed)
                return null;
            if (allowOr && (helper.validateIdentifierKey(DroolsSoftKeywords.OR) || input.LA(1) == DRL5Lexer.DOUBLE_PIPE)) {
                while (helper.validateIdentifierKey(DroolsSoftKeywords.OR) || input.LA(1) == DRL5Lexer.DOUBLE_PIPE) {
                    if (input.LA(1) == DRL5Lexer.DOUBLE_PIPE) {
                        match(input, DRL5Lexer.DOUBLE_PIPE, null, null, DroolsEditorType.SYMBOL);
                    } else {
                        match(input, DRL5Lexer.ID, DroolsSoftKeywords.OR, null, DroolsEditorType.KEYWORD);
                    }
                    if (state.failed)
                        return null;
                    while (input.LA(1) == DRL5Lexer.AT) {
                        // annotation*
                        annotation(or);
                        if (state.failed)
                            return null;
                    }
                    if (state.backtracking == 0) {
                        helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION_AND_OR);
                    }
                    lhsAnd(or, allowOr);
                    if (state.failed)
                        return null;
                }
            } else if (allowOr) {
                if (state.backtracking == 0) {
                    // if no OR present, then remove it and add children to parent
                    ((ConditionalElementDescr) ce.getDescr()).getDescrs().remove(or.getDescr());
                    for (BaseDescr base : or.getDescr().getDescrs()) {
                        ((ConditionalElementDescr) ce.getDescr()).addDescr(base);
                    }
                    result = ce.getDescr();
                }
            }
        } finally {
            if (state.backtracking == 0) {
                helper.end(CEDescrBuilder.class, or);
            }
        }
    }
    return result;
}

Example 18 with OrDescr

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

the class CEDescrBuilderImpl method or.

/**
 * {@inheritDoc}
 */
public CEDescrBuilder<CEDescrBuilder<P, T>, OrDescr> or() {
    OrDescr orDescr = new OrDescr();
    ((ConditionalElementDescr) descr).addDescr(orDescr);
    return new CEDescrBuilderImpl<CEDescrBuilder<P, T>, OrDescr>(this, orDescr);
}

Example 19 with OrDescr

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

the class RuleParserTest method testOrBindingWithBrackets.

@Test
public void testOrBindingWithBrackets() throws Exception {
    final PackageDescr pkg = (PackageDescr) parseResource("compilationUnit", "or_binding_with_brackets.drl");
    assertEquals(1, pkg.getRules().size());
    final RuleDescr rule = (RuleDescr) pkg.getRules().get(0);
    assertEquals(1, rule.getLhs().getDescrs().size());
    assertEquals(1, rule.getLhs().getDescrs().size());
    final OrDescr or = (OrDescr) rule.getLhs().getDescrs().get(0);
    assertEquals(2, or.getDescrs().size());
    // first fact
    final PatternDescr firstFact = (PatternDescr) or.getDescrs().get(0);
    assertEquals("Person", firstFact.getObjectType());
    assertEquals("foo", firstFact.getIdentifier());
    // second "option"
    final PatternDescr secondFact = (PatternDescr) or.getDescrs().get(0);
    assertEquals("Person", secondFact.getObjectType());
    assertEquals("foo", secondFact.getIdentifier());
    assertEqualsIgnoreWhitespace("System.out.println( \"Mark and Michael\" + bar );", (String) rule.getConsequence());
}

Example 20 with OrDescr

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

the class RuleParserTest method testOrBindingComplex.

/**
 * test basic foo : Fact() || Fact() stuff binding to an "or"
 */
@Test
public void testOrBindingComplex() throws Exception {
    final PackageDescr pkg = (PackageDescr) parseResource("compilationUnit", "or_binding_complex.drl");
    assertEquals(1, pkg.getRules().size());
    final RuleDescr rule = (RuleDescr) pkg.getRules().get(0);
    assertEquals(1, rule.getLhs().getDescrs().size());
    assertEquals(1, rule.getLhs().getDescrs().size());
    final OrDescr or = (OrDescr) rule.getLhs().getDescrs().get(0);
    assertEquals(2, or.getDescrs().size());
    // first fact
    final PatternDescr firstFact = (PatternDescr) or.getDescrs().get(0);
    assertEquals("Person", firstFact.getObjectType());
    assertEquals("foo", firstFact.getIdentifier());
    // second "option"
    final PatternDescr secondFact = (PatternDescr) or.getDescrs().get(1);
    assertEquals("Person", secondFact.getObjectType());
    assertEquals(1, secondFact.getConstraint().getDescrs().size());
    assertEquals("foo", secondFact.getIdentifier());
    assertEqualsIgnoreWhitespace("System.out.println( \"Mark and Michael\" + bar );", (String) rule.getConsequence());
}