Examples of net.percederberg.grammatica.parser.Node

Package net.percederberg.grammatica.parser

Examples of net.percederberg.grammatica.parser.Node

net.percederberg.grammatica.parser.Node
An abstract parse tree node. This class is inherited by all nodes in the parse tree, i.e. by the token and production classes. @author Per Cederberg, @version 1.2


        MibContext     local = getContext();
        String         name = null;
        Object         value = null;
        FileLocation   loc = getLocation(node);
        Node           child;


        for (int i = 0; i < node.getChildCount(); i++) {
            child = node.getChildAt(i);
            switch (child.getId()) {
            case Asn1Constants.MODULE_REFERENCE:
                name = getStringValue(child, 0);
                local = currentMib.getImport(name);
                if (local == null) {
                    throw new ParseException(
                        ParseException.ANALYSIS_ERROR,
                        "referenced module not imported '" + name + "'",
                        child.getStartLine(),
                        child.getStartColumn());
                }
                break;
            case Asn1Constants.IDENTIFIER_STRING:
                name = getStringValue(child, 0);
                break;

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    protected Node exitSequenceOfType(Production node)
        throws ParseException {


        MibType     type;
        Constraint  c = null;
        Node        child;


        child = getChildAt(node, node.getChildCount() - 1);
        type = (MibType) getValue(child, 0);
        if (node.getChildCount() == 4) {
            child = getChildAt(node, 1);

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        throws ParseException {


        MibType     type;
        MibTypeTag  tag;
        boolean     implicit = implicitTags;
        Node        child;


        child = getChildAt(node, 0);
        tag = (MibTypeTag) getValue(child, 0);
        child = getChildAt(node, 1);
        if (child.getId() == Asn1Constants.EXPLICIT_OR_IMPLICIT_TAG) {
            implicit = ((Boolean) getValue(child, 0)).booleanValue();
        }
        child = getChildAt(node, node.getChildCount() - 1);
        type = (MibType) getValue(child, 0);
        type.setTag(implicit, tag);

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     * @return the node to add to the parse tree
     *
     * @throws ParseException if the node analysis discovered errors
     */
    protected Node exitClass(Production node) throws ParseException {
        Node  child = getChildAt(node, 0);
        int   category;


        if (child.getId() == Asn1Constants.UNIVERSAL) {
            category = MibTypeTag.UNIVERSAL_CATEGORY;
        } else if (child.getId() == Asn1Constants.APPLICATION) {
            category = MibTypeTag.APPLICATION_CATEGORY;
        } else if (child.getId() == Asn1Constants.PRIVATE) {
            category = MibTypeTag.PRIVATE_CATEGORY;
        } else {
            category = MibTypeTag.CONTEXT_SPECIFIC_CATEGORY;
        }
        node.addValue(new Integer(category));

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     * @throws ParseException if the node analysis discovered errors
     */
    protected Node exitExplicitOrImplicitTag(Production node)
        throws ParseException {


        Node  child = getChildAt(node, 0);


        if (child.getId() == Asn1Constants.EXPLICIT) {
            node.addValue(Boolean.FALSE);
        } else {
            node.addValue(Boolean.TRUE);
        }
        return node;

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    protected Node exitElementType(Production node)
        throws ParseException {


        String   name = null;
        MibType  type;
        Node     child;


        child = getChildAt(node, 0);
        if (child.getId() == Asn1Constants.IDENTIFIER_STRING) {
            name = getStringValue(child, 0);
            child = getChildAt(node, 1);
        }
        if (child.getId() != Asn1Constants.TYPE) {
            throw new ParseException(
                ParseException.ANALYSIS_ERROR,
                "referencing components is currently unsupported",
                child.getStartLine(),
                child.getStartColumn());
        }
        type = new ElementType(name, (MibType) getValue(child, 0));
        type.setComment(MibAnalyzerUtil.getComments(node));
        node.addValue(type);
        return node;

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     *
     * @return the node to add to the parse tree
     */
    protected Node exitNamedNumberList(Production node) {
        MibValueSymbol  symbol;
        Node            child;


        for (int i = 0; i < node.getChildCount(); i++) {
            child = node.getChildAt(i);
            if (child.getId() == Asn1Constants.NAMED_NUMBER) {
                symbol = (MibValueSymbol) child.getValue(0);
                symbol.setComment(MibAnalyzerUtil.getComments(child));
            }
        }
        node.addValue(getChildValues(node));
        return node;

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     * @throws ParseException if the node analysis discovered errors
     */
    protected Node exitValueRange(Production node)
        throws ParseException {


        Node  child;


        // Check for strict lower end point
        child = getChildAt(node, 0);
        if (child.getId() == Asn1Constants.LESS_THAN) {
            node.addValue(Boolean.TRUE);
        } else {
            node.addValue(Boolean.FALSE);
        }


        // Add upper end point (or null)
        child = getChildAt(node, node.getChildCount() - 1);
        node.addValue(child.getValue(0));


        // Check for strict upper end point
        child = getChildAt(node, node.getChildCount() - 2);
        if (child.getId() == Asn1Constants.LESS_THAN) {
            node.addValue(Boolean.TRUE);
        } else {
            node.addValue(Boolean.FALSE);
        }

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        throws ParseException {


        ValueReference  ref;
        MibContext      local = getContext();
        String          name;
        Node            child;


        // Check for module reference
        child = getChildAt(node, 0);
        if (child.getId() == Asn1Constants.MODULE_REFERENCE) {
            name = getStringValue(child, 0);
            local = currentMib.getImport(name);
            if (local == null) {
                throw new ParseException(
                    ParseException.ANALYSIS_ERROR,
                    "referenced module not imported '" + name + "'",
                    child.getStartLine(),
                    child.getStartColumn());
            }
            child = getChildAt(node, 1);
        }


        // Create value reference

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     * @throws ParseException if the node analysis discovered errors
     */
    protected Node exitBooleanValue(Production node)
        throws ParseException {


        Node  child = getChildAt(node, 0);


        if (child.getId() == Asn1Constants.TRUE) {
            node.addValue(BooleanValue.TRUE);
        } else {
            node.addValue(BooleanValue.FALSE);
        }
        return node;

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