Examples of org.modeshape.common.text.Position

org.modeshape.common.text.Position
A class that represents the position of a particular character in terms of the lines and columns of a character sequence.


    protected Literal parseLiteral( TokenStream tokens,
                                    TypeSystem typeSystem ) {
        if (tokens.canConsume("CAST", "(")) {
            // Get the value that is to be cast ...
            Position pos = tokens.nextPosition();
            Object value = parseLiteralValue(tokens, typeSystem);
            // Figure out the type we're supposed to cast to ...
            tokens.consume("AS");
            String typeName = tokens.consume();
            TypeFactory<?> typeFactory = typeSystem.getTypeFactory(typeName);
            if (typeFactory == null) {
                Position typePos = tokens.previousPosition();
                String msg = GraphI18n.invalidPropertyType.text(tokens.consume(), typePos.getLine(), typePos.getColumn());
                throw new ParsingException(typePos, msg);
            }
            // Convert the supplied value to the desired value ...
            tokens.consume(')');
            try {

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            if (tokens.canConsume("TRUE")) return booleanFactory.create(Boolean.TRUE);
            if (tokens.canConsume("FALSE")) return booleanFactory.create(Boolean.FALSE);
        }


        // Otherwise it is an unquoted literal value ...
        Position pos = tokens.nextPosition();
        String sign = "";
        if (tokens.canConsume('-')) sign = "-";
        else if (tokens.canConsume('+')) sign = "";


        // Try to parse this value as a number ...
        String integral = tokens.consume();
        TypeFactory<Double> doubleFactory = typeSystem.getDoubleFactory();
        if (doubleFactory != null) {
            String decimal = null;
            if (tokens.canConsume('.')) {
                decimal = tokens.consume();
                String value = sign + integral + "." + decimal;
                if ((decimal.endsWith("e") || decimal.endsWith("E")) && (tokens.matches('+') || tokens.matches('-'))) {
                    // There's more to the number ...
                    value = value + tokens.consume() + tokens.consume(); // +/-EXP
                }
                try {
                    // Convert to a double and then back to a string to get canonical form ...
                    return doubleFactory.create(value);
                } catch (ValueFormatException e) {
                    String msg = GraphI18n.expectingLiteralAndUnableToParseAsDouble.text(value, pos.getLine(), pos.getColumn());
                    throw new ParsingException(pos, msg);
                }
            }
        }
        TypeFactory<?> dateTimeFactory = typeSystem.getDateTimeFactory();
        if (dateTimeFactory != null) {
            if (tokens.canConsume('-')) {
                // Looks like a date (see Section 3.6.4.3 of the JCR 2.0 specification) ...
                // sYYYY-MM-DDThh:mm:ss.sssTZD
                String year = integral;
                String month = tokens.consume();
                tokens.consume('-');
                String dateAndHour = tokens.consume();
                tokens.consume(':');
                String minutes = tokens.consume();
                tokens.consume(':');
                String seconds = tokens.consume();
                tokens.consume('.');
                String subSeconds = tokens.consume(); // should contain 'T' separator and possibly the TZ name and (if no +/-)
                // hours
                String tzSign = "+";
                String tzHours = "00";
                String tzMinutes = "00";
                String tzDelim = ":";
                if (tokens.canConsume('+')) {
                    // the fractionalSeconds did NOT contain the tzHours ...
                    tzHours = tokens.consume();
                    if (tokens.canConsume(':')) tzMinutes = tokens.consume();
                } else if (tokens.canConsume('-')) {
                    // the fractionalSeconds did NOT contain the tzHours ...
                    tzSign = "-";
                    tzHours = tokens.consume();
                    if (tokens.canConsume(':')) tzMinutes = tokens.consume();
                } else if (tokens.canConsume(':')) {
                    // fractionalSeconds DID contain the TZ hours (without + or -)
                    tzHours = tzSign = "";
                    if (tokens.canConsume(':')) tzMinutes = tokens.consume();
                } else if (subSeconds.endsWith("Z")) {
                    tzSign = tzMinutes = tzDelim = tzHours = "";
                } else if (subSeconds.endsWith("UTC")) {
                    subSeconds = subSeconds.length() > 3 ? subSeconds.substring(0, subSeconds.length() - 3) : subSeconds;
                }
                String value = sign + year + "-" + month + "-" + dateAndHour + ":" + minutes + ":" + seconds + "." + subSeconds
                               + tzSign + tzHours + tzDelim + tzMinutes;
                try {
                    // Convert to a date and then back to a string to get canonical form ...
                    Object dateTime = dateTimeFactory.create(value);
                    return dateTimeFactory.asString(dateTime);
                } catch (ValueFormatException e) {
                    String msg = GraphI18n.expectingLiteralAndUnableToParseAsDate.text(value, pos.getLine(), pos.getColumn());
                    throw new ParsingException(pos, msg);
                }
            }
        }
        TypeFactory<Long> longFactory = typeSystem.getLongFactory();
        // try to parse an a long ...
        String value = sign + integral;
        try {
            // Convert to a long and then back to a string to get canonical form ...
            return longFactory.create(value);
        } catch (ValueFormatException e) {
            String msg = GraphI18n.expectingLiteralAndUnableToParseAsLong.text(value, pos.getLine(), pos.getColumn());
            throw new ParsingException(pos, msg);
        }
    }

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    protected DynamicOperand parseDynamicOperand( TokenStream tokens,
                                                  TypeSystem typeSystem,
                                                  Source source ) {
        DynamicOperand result = null;
        Position pos = tokens.nextPosition();
        if (tokens.canConsume('(')) {
            result = parseDynamicOperand(tokens, typeSystem, source);
            tokens.consume(")");
        } else if (tokens.canConsume("LENGTH", "(")) {
            result = length(parsePropertyValue(tokens, typeSystem, source));
            tokens.consume(")");
        } else if (tokens.canConsume("LOWER", "(")) {
            result = lowerCase(parseDynamicOperand(tokens, typeSystem, source));
            tokens.consume(")");
        } else if (tokens.canConsume("UPPER", "(")) {
            result = upperCase(parseDynamicOperand(tokens, typeSystem, source));
            tokens.consume(")");
        } else if (tokens.canConsume("NAME", "(")) {
            if (tokens.canConsume(")")) {
                if (source instanceof Selector) {
                    return nodeName(((Selector)source).name());
                }
                String msg = GraphI18n.functionIsAmbiguous.text("NAME()", pos.getLine(), pos.getColumn());
                throw new ParsingException(pos, msg);
            }
            result = nodeName(parseSelectorName(tokens, typeSystem));
            tokens.consume(")");
        } else if (tokens.canConsume("LOCALNAME", "(")) {
            if (tokens.canConsume(")")) {
                if (source instanceof Selector) {
                    return nodeLocalName(((Selector)source).name());
                }
                String msg = GraphI18n.functionIsAmbiguous.text("LOCALNAME()", pos.getLine(), pos.getColumn());
                throw new ParsingException(pos, msg);
            }
            result = nodeLocalName(parseSelectorName(tokens, typeSystem));
            tokens.consume(")");
        } else if (tokens.canConsume("SCORE", "(")) {
            if (tokens.canConsume(")")) {
                if (source instanceof Selector) {
                    return fullTextSearchScore(((Selector)source).name());
                }
                String msg = GraphI18n.functionIsAmbiguous.text("SCORE()", pos.getLine(), pos.getColumn());
                throw new ParsingException(pos, msg);
            }
            result = fullTextSearchScore(parseSelectorName(tokens, typeSystem));
            tokens.consume(")");
        } else if (tokens.canConsume("DEPTH", "(")) {
            if (tokens.canConsume(")")) {
                if (source instanceof Selector) {
                    return nodeDepth(((Selector)source).name());
                }
                String msg = GraphI18n.functionIsAmbiguous.text("DEPTH()", pos.getLine(), pos.getColumn());
                throw new ParsingException(pos, msg);
            }
            result = nodeDepth(parseSelectorName(tokens, typeSystem));
            tokens.consume(")");
        } else if (tokens.canConsume("ID", "(")) {
            if (tokens.canConsume(")")) {
                if (source instanceof Selector) {
                    return nodeId(((Selector)source).name());
                }
                String msg = GraphI18n.functionIsAmbiguous.text("ID()", pos.getLine(), pos.getColumn());
                throw new ParsingException(pos, msg);
            }
            result = nodeId(parseSelectorName(tokens, typeSystem));
            tokens.consume(")");
        } else if (tokens.canConsume("PATH", "(")) {
            if (tokens.canConsume(")")) {
                if (source instanceof Selector) {
                    return nodePath(((Selector)source).name());
                }
                String msg = GraphI18n.functionIsAmbiguous.text("PATH()", pos.getLine(), pos.getColumn());
                throw new ParsingException(pos, msg);
            }
            result = nodePath(parseSelectorName(tokens, typeSystem));
            tokens.consume(")");
        } else if (tokens.canConsume("CHILDCOUNT", "(")) {
            if (tokens.canConsume(")")) {
                if (source instanceof Selector) {
                    return childCount(((Selector)source).name());
                }
                String msg = GraphI18n.functionIsAmbiguous.text("CHILDCOUNT()", pos.getLine(), pos.getColumn());
                throw new ParsingException(pos, msg);
            }
            result = childCount(parseSelectorName(tokens, typeSystem));
            tokens.consume(")");
        } else if (tokens.canConsume("REFERENCE", "(")) {

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    }


    protected PropertyValue parsePropertyValue( TokenStream tokens,
                                                TypeSystem typeSystem,
                                                Source source ) {
        Position pos = tokens.nextPosition();
        String firstWord = parseName(tokens, typeSystem);
        SelectorName selectorName = null;
        if (tokens.canConsume('.')) {
            // We actually read the selector name, so now read the property name ...
            selectorName = new SelectorName(firstWord);
            String propertyName = parseName(tokens, typeSystem);
            return propertyValue(selectorName, propertyName);
        }
        // Otherwise the source should be a single named selector
        if (source instanceof Selector) {
            selectorName = ((Selector)source).aliasOrName();
            return propertyValue(selectorName, firstWord);
        }
        String msg = GraphI18n.mustBeScopedAtLineAndColumn.text(firstWord, pos.getLine(), pos.getColumn());
        throw new ParsingException(pos, msg);
    }

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    }


    protected ReferenceValue parseReferenceValue( TokenStream tokens,
                                                  TypeSystem typeSystem,
                                                  Source source ) {
        Position pos = tokens.nextPosition();
        SelectorName selectorName = null;
        if (tokens.canConsume(')')) {
            // There should be a single source ...
            if (source instanceof Selector) {
                selectorName = ((Selector)source).aliasOrName();
                return referenceValue(selectorName);
            }
            String msg = GraphI18n.functionIsAmbiguous.text("REFERENCE()", pos.getLine(), pos.getColumn());
            throw new ParsingException(pos, msg);
        }
        // Otherwise, there is at least one word inside the parentheses ...
        String firstWord = parseName(tokens, typeSystem);
        if (tokens.canConsume('.')) {

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            if (tokens.canConsume(',')) {
                // This is of the 'from,to' style ...
                int to = tokens.consumeInteger();
                int offset = to - first;
                if (offset < 0) {
                    Position pos = tokens.previousPosition();
                    String msg = GraphI18n.secondValueInLimitRangeCannotBeLessThanFirst.text(first, to, pos.getLine(),
                                                                                             pos.getColumn());
                    throw new ParsingException(pos, msg);
                }
                return limit(offset, first);
            }
            if (tokens.canConsume("OFFSET")) {

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     *      org.modeshape.jcr.query.model.TypeSystem)
     */
    @Override
    protected Source parseFrom( TokenStream tokens,
                                TypeSystem typeSystem ) {
        Position firstSourcePosition = tokens.nextPosition();
        Source source = super.parseFrom(tokens, typeSystem);
        if (tokens.matches(',') && source instanceof NamedSelector) {
            NamedSelector selector = (NamedSelector)source;
            JoinableSources joinedSources = new JoinableSources(selector, firstSourcePosition);
            while (tokens.canConsume(',')) {
                // This is a JCR-SQL-style JOIN ...
                Position nextSourcePosition = tokens.nextPosition();
                NamedSelector nextSource = parseNamedSelector(tokens, typeSystem);
                joinedSources.add(nextSource, nextSourcePosition);
            }
            source = joinedSources;
        }

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                                                                                                                     "("))) {
            JoinableSources joinableSources = (JoinableSources)source;
            // See if this is a join condition ...
            if (tokens.matches(ANY_VALUE, ":", ANY_VALUE, ".", "JCR", ":", "PATH", "=")
                || tokens.matches(ANY_VALUE, ".", "JCR", ":", "PATH", "=")) {
                Position position = tokens.nextPosition();
                SelectorName selector1 = parseSelectorName(tokens, typeSystem);
                tokens.consume('.');
                parseName(tokens, typeSystem); // jcr:path
                tokens.consume('=');
                SelectorName selector2 = parseSelectorName(tokens, typeSystem);

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            || tokens.matches(ANY_VALUE, ":", ANY_VALUE, "IS", "NOT", "NULL")
            || tokens.matches(ANY_VALUE, ":", ANY_VALUE, ".", ANY_VALUE, "IS", "NOT", "NULL")
            || tokens.matches(ANY_VALUE, ":", ANY_VALUE, ".", ANY_VALUE, ":", ANY_VALUE, "IS", "NOT", "NULL")
            || tokens.matches(ANY_VALUE, ":", ANY_VALUE, ".", ANY_VALUE, "IS", "NULL")
            || tokens.matches(ANY_VALUE, ":", ANY_VALUE, ".", ANY_VALUE, ":", ANY_VALUE, "IS", "NULL")) {
            Position pos = tokens.nextPosition();
            String firstWord = parseName(tokens, typeSystem);
            SelectorName selectorName = null;
            String propertyName = null;
            if (tokens.canConsume('.')) {
                // We actually read the selector name, so now read the property name ...
                selectorName = new SelectorName(firstWord);
                propertyName = parseName(tokens, typeSystem);
            } else {
                // Otherwise the source should be a single named selector
                if (!(source instanceof Selector)) {
                    String msg = GraphI18n.mustBeScopedAtLineAndColumn.text(firstWord, pos.getLine(), pos.getColumn());
                    throw new ParsingException(pos, msg);
                }
                selectorName = ((Selector)source).name();
                propertyName = firstWord;
            }

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     */
    @Override
    protected Object parseLiteralValue( TokenStream tokens,
                                        TypeSystem typeSystem ) {
        if (tokens.canConsume("TIMESTAMP")) {
            Position pos = tokens.previousPosition();
            // This should be a timestamp represented as a single-quoted string ...
            String value = removeBracketsAndQuotes(tokens.consume(), tokens.previousPosition());
            TypeFactory<?> dateTimeFactory = typeSystem.getDateTimeFactory();
            try {
                // Convert to a date and then back to a string to get canonical form ...
                Object dateTime = dateTimeFactory.create(value);
                return dateTime;
                // return dateTimeFactory.asString(dateTime);
            } catch (ValueFormatException e) {
                String msg = GraphI18n.expectingLiteralAndUnableToParseAsDate.text(value, pos.getLine(), pos.getColumn());
                throw new ParsingException(pos, msg);
            }
        }
        return super.parseLiteralValue(tokens, typeSystem);
    }

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