Examples with DescrBuilder org.drools.compiler.lang.api.DescrBuilder used on opensource projects

Example 21 with DescrBuilder

use of org.drools.compiler.lang.api.DescrBuilder in project drools by kiegroup.

the class DRL5Parser method intOrChunkAttribute.

/**
 * intOrChunkAttribute := attributeKey ( DECIMAL | chunk_(_) )
 * @param key
 * @throws RecognitionException
 */
private AttributeDescr intOrChunkAttribute(AttributeSupportBuilder<?> as, String[] key) throws RecognitionException {
    AttributeDescrBuilder<?> attribute = null;
    try {
        StringBuilder builder = new StringBuilder();
        for (String k : key) {
            if ("-".equals(k)) {
                match(input, DRL5Lexer.MINUS, k, null, // part of the keyword
                DroolsEditorType.KEYWORD);
                if (state.failed)
                    return null;
            } else {
                match(input, DRL5Lexer.ID, k, null, DroolsEditorType.KEYWORD);
                if (state.failed)
                    return null;
            }
            builder.append(k);
        }
        if (state.backtracking == 0) {
            attribute = helper.start((DescrBuilder<?, ?>) as, AttributeDescrBuilder.class, builder.toString());
        }
        if (input.LA(1) == DRL5Lexer.LEFT_PAREN) {
            String value = chunk(DRL5Lexer.LEFT_PAREN, DRL5Lexer.RIGHT_PAREN, -1);
            if (state.failed)
                return null;
            if (state.backtracking == 0) {
                attribute.value(safeStripDelimiters(value, "(", ")"));
                attribute.type(AttributeDescr.Type.EXPRESSION);
            }
        } else {
            String value = "";
            if (input.LA(1) == DRL5Lexer.PLUS) {
                Token sign = match(input, DRL5Lexer.PLUS, null, null, DroolsEditorType.NUMERIC_CONST);
                if (state.failed)
                    return null;
                value += sign.getText();
            } else if (input.LA(1) == DRL5Lexer.MINUS) {
                Token sign = match(input, DRL5Lexer.MINUS, null, null, DroolsEditorType.NUMERIC_CONST);
                if (state.failed)
                    return null;
                value += sign.getText();
            }
            Token nbr = match(input, DRL5Lexer.DECIMAL, null, null, DroolsEditorType.NUMERIC_CONST);
            if (state.failed)
                return null;
            value += nbr.getText();
            if (state.backtracking == 0) {
                attribute.value(value);
                attribute.type(AttributeDescr.Type.NUMBER);
            }
        }
    } finally {
        if (attribute != null) {
            helper.end(AttributeDescrBuilder.class, attribute);
        }
    }
    return attribute != null ? attribute.getDescr() : null;
}

Example 22 with DescrBuilder

use of org.drools.compiler.lang.api.DescrBuilder in project drools by kiegroup.

the class DRL5Parser method lhsAccumulate.

/**
 * lhsAccumulate := ACCUMULATE LEFT_PAREN lhsAnd (COMMA|SEMICOLON)
 *                      accumulateFunctionBinding (COMMA accumulateFunctionBinding)*
 *                      (SEMICOLON constraints)?
 *                  RIGHT_PAREN SEMICOLON?
 *
 * @param ce
 * @return
 * @throws RecognitionException
 */
private BaseDescr lhsAccumulate(PatternContainerDescrBuilder<?, ?> ce) throws RecognitionException {
    PatternDescrBuilder<?> pattern = null;
    BaseDescr result = null;
    pattern = helper.start((DescrBuilder<?, ?>) ce, PatternDescrBuilder.class, null);
    if (pattern != null) {
        result = pattern.getDescr();
    }
    try {
        if (state.backtracking == 0) {
            pattern.type("Object[]");
            pattern.isQuery(false);
        // might have to add the implicit bindings as well
        }
        AccumulateDescrBuilder<?> accumulate = helper.start(pattern, AccumulateDescrBuilder.class, null);
        try {
            match(input, DRL5Lexer.ID, DroolsSoftKeywords.ACCUMULATE, null, DroolsEditorType.KEYWORD);
            if (state.failed)
                return null;
            if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
                helper.emit(Location.LOCATION_LHS_FROM_ACCUMULATE);
            }
            match(input, DRL5Lexer.LEFT_PAREN, null, null, DroolsEditorType.SYMBOL);
            if (state.failed)
                return null;
            CEDescrBuilder<?, AndDescr> source = accumulate.source();
            try {
                helper.start(source, CEDescrBuilder.class, null);
                lhsAnd(source, false);
                if (state.failed)
                    return null;
                if (source.getDescr() != null && source.getDescr() instanceof ConditionalElementDescr) {
                    ConditionalElementDescr root = (ConditionalElementDescr) source.getDescr();
                    BaseDescr[] descrs = root.getDescrs().toArray(new BaseDescr[root.getDescrs().size()]);
                    root.getDescrs().clear();
                    for (int i = 0; i < descrs.length; i++) {
                        root.addOrMerge(descrs[i]);
                    }
                }
            } finally {
                helper.end(CEDescrBuilder.class, source);
            }
            if (input.LA(1) == DRL5Lexer.COMMA) {
                match(input, DRL5Lexer.COMMA, null, null, DroolsEditorType.SYMBOL);
                if (state.failed)
                    return null;
            } else if (input.LA(-1) != DRL5Lexer.SEMICOLON) {
                // lhsUnary will consume an optional SEMICOLON, so we need to check if it was consumed already
                // or if we must fail consuming it now
                match(input, DRL5Lexer.SEMICOLON, null, null, DroolsEditorType.SYMBOL);
                if (state.failed)
                    return null;
            }
            // accumulate functions
            accumulateFunctionBinding(accumulate);
            if (state.failed)
                return null;
            while (input.LA(1) == DRL5Lexer.COMMA) {
                match(input, DRL5Lexer.COMMA, null, null, DroolsEditorType.SYMBOL);
                if (state.failed)
                    return null;
                accumulateFunctionBinding(accumulate);
                if (state.failed)
                    return null;
            }
            if (input.LA(1) == DRL5Lexer.SEMICOLON) {
                match(input, DRL5Lexer.SEMICOLON, null, null, DroolsEditorType.SYMBOL);
                if (state.failed)
                    return null;
                constraints(pattern);
            }
            match(input, DRL5Lexer.RIGHT_PAREN, null, null, DroolsEditorType.SYMBOL);
            if (state.failed)
                return null;
        } finally {
            helper.end(AccumulateDescrBuilder.class, accumulate);
            if (state.backtracking == 0 && input.LA(1) != DRL5Lexer.EOF) {
                helper.emit(Location.LOCATION_LHS_BEGIN_OF_CONDITION);
            }
        }
    } finally {
        helper.end(PatternDescrBuilder.class, pattern);
    }
    if (input.LA(1) == DRL5Lexer.SEMICOLON) {
        match(input, DRL5Lexer.SEMICOLON, null, null, DroolsEditorType.SYMBOL);
        if (state.failed)
            return null;
    }
    return result;
}

Example 23 with DescrBuilder

use of org.drools.compiler.lang.api.DescrBuilder in project drools by kiegroup.

the class DRL5Parser method namedConsequence.

/**
 * namedConsequence := DO LEFT_SQUARE ID RIGHT_SQUARE BREAK?
 */
private BaseDescr namedConsequence(CEDescrBuilder<?, ?> ce, NamedConsequenceDescrBuilder<?> namedConsequence) throws RecognitionException {
    if (namedConsequence == null) {
        namedConsequence = helper.start((DescrBuilder<?, ?>) ce, NamedConsequenceDescrBuilder.class, null);
    }
    try {
        match(input, DRL5Lexer.ID, DroolsSoftKeywords.DO, null, DroolsEditorType.KEYWORD);
        if (state.failed)
            return null;
        match(input, DRL5Lexer.LEFT_SQUARE, null, null, DroolsEditorType.SYMBOL);
        if (state.failed)
            return null;
        Token label = match(input, DRL5Lexer.ID, null, null, DroolsEditorType.SYMBOL);
        if (state.failed)
            return null;
        namedConsequence.name(label.getText());
        match(input, DRL5Lexer.RIGHT_SQUARE, null, null, DroolsEditorType.SYMBOL);
        if (state.failed)
            return null;
    } finally {
        helper.end(NamedConsequenceDescrBuilder.class, namedConsequence);
    }
    return namedConsequence.getDescr();
}

Example 24 with DescrBuilder

use of org.drools.compiler.lang.api.DescrBuilder in project drools by kiegroup.

the class DRL5Parser method breakingNamedConsequence.

/**
 * breakingNamedConsequence := BREAK LEFT_SQUARE ID RIGHT_SQUARE
 */
private BaseDescr breakingNamedConsequence(CEDescrBuilder<?, ?> ce, NamedConsequenceDescrBuilder<?> namedConsequence) throws RecognitionException {
    if (namedConsequence == null) {
        namedConsequence = helper.start((DescrBuilder<?, ?>) ce, NamedConsequenceDescrBuilder.class, null);
    }
    try {
        match(input, DRL5Lexer.ID, DroolsSoftKeywords.BREAK, null, DroolsEditorType.KEYWORD);
        if (state.failed)
            return null;
        match(input, DRL5Lexer.LEFT_SQUARE, null, null, DroolsEditorType.SYMBOL);
        if (state.failed)
            return null;
        Token label = match(input, DRL5Lexer.ID, null, null, DroolsEditorType.SYMBOL);
        if (state.failed)
            return null;
        namedConsequence.name(label.getText());
        namedConsequence.breaking(true);
        match(input, DRL5Lexer.RIGHT_SQUARE, null, null, DroolsEditorType.SYMBOL);
        if (state.failed)
            return null;
    } finally {
        helper.end(NamedConsequenceDescrBuilder.class, namedConsequence);
    }
    return namedConsequence.getDescr();
}