Remove 'model' from package names in yang-model-parser-impl.
[controller.git] / opendaylight / sal / yang-prototype / code-generator / yang-model-parser-impl / src / main / java / org / opendaylight / controller / yang / model / parser / util / YangModelBuilderUtil.java
diff --git a/opendaylight/sal/yang-prototype/code-generator/yang-model-parser-impl/src/main/java/org/opendaylight/controller/yang/model/parser/util/YangModelBuilderUtil.java b/opendaylight/sal/yang-prototype/code-generator/yang-model-parser-impl/src/main/java/org/opendaylight/controller/yang/model/parser/util/YangModelBuilderUtil.java
deleted file mode 100644 (file)
index 49b177e..0000000
+++ /dev/null
@@ -1,1397 +0,0 @@
-/*
- * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/eplv10.html
- */
-package org.opendaylight.controller.yang.model.parser.util;
-
-import java.net.URI;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Date;
-import java.util.List;
-import java.util.Stack;
-
-import org.antlr.v4.runtime.tree.ParseTree;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Argument_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Base_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Bit_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Bits_specificationContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Config_argContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Config_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Decimal64_specificationContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Default_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Description_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Enum_specificationContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Enum_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Error_app_tag_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Error_message_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Fraction_digits_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Identityref_specificationContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Leafref_specificationContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Length_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Mandatory_argContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Mandatory_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Max_elements_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Min_elements_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Must_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Numerical_restrictionsContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Ordered_by_argContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Ordered_by_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Path_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Pattern_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Position_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Presence_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Range_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Reference_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Refine_anyxml_stmtsContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Refine_choice_stmtsContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Refine_container_stmtsContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Refine_leaf_list_stmtsContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Refine_leaf_stmtsContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Refine_list_stmtsContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Refine_pomContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Refine_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Require_instance_argContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Require_instance_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Status_argContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Status_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.StringContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.String_restrictionsContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Type_body_stmtsContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Units_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Value_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.When_stmtContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Yin_element_argContext;
-import org.opendaylight.controller.antlrv4.code.gen.YangParser.Yin_element_stmtContext;
-import org.opendaylight.controller.yang.common.QName;
-import org.opendaylight.controller.yang.model.api.MustDefinition;
-import org.opendaylight.controller.yang.model.api.RevisionAwareXPath;
-import org.opendaylight.controller.yang.model.api.SchemaPath;
-import org.opendaylight.controller.yang.model.api.Status;
-import org.opendaylight.controller.yang.model.api.TypeDefinition;
-import org.opendaylight.controller.yang.model.api.UnknownSchemaNode;
-import org.opendaylight.controller.yang.model.api.type.BitsTypeDefinition;
-import org.opendaylight.controller.yang.model.api.type.BitsTypeDefinition.Bit;
-import org.opendaylight.controller.yang.model.api.type.EnumTypeDefinition;
-import org.opendaylight.controller.yang.model.api.type.EnumTypeDefinition.EnumPair;
-import org.opendaylight.controller.yang.model.api.type.LengthConstraint;
-import org.opendaylight.controller.yang.model.api.type.PatternConstraint;
-import org.opendaylight.controller.yang.model.api.type.RangeConstraint;
-import org.opendaylight.controller.yang.model.parser.builder.api.SchemaNodeBuilder;
-import org.opendaylight.controller.yang.model.parser.builder.impl.ConstraintsBuilder;
-import org.opendaylight.controller.yang.model.util.BaseConstraints;
-import org.opendaylight.controller.yang.model.util.BinaryType;
-import org.opendaylight.controller.yang.model.util.BitsType;
-import org.opendaylight.controller.yang.model.util.Decimal64;
-import org.opendaylight.controller.yang.model.util.EnumerationType;
-import org.opendaylight.controller.yang.model.util.InstanceIdentifier;
-import org.opendaylight.controller.yang.model.util.Int16;
-import org.opendaylight.controller.yang.model.util.Int32;
-import org.opendaylight.controller.yang.model.util.Int64;
-import org.opendaylight.controller.yang.model.util.Int8;
-import org.opendaylight.controller.yang.model.util.Leafref;
-import org.opendaylight.controller.yang.model.util.RevisionAwareXPathImpl;
-import org.opendaylight.controller.yang.model.util.StringType;
-import org.opendaylight.controller.yang.model.util.Uint16;
-import org.opendaylight.controller.yang.model.util.Uint32;
-import org.opendaylight.controller.yang.model.util.Uint64;
-import org.opendaylight.controller.yang.model.util.Uint8;
-import org.opendaylight.controller.yang.model.util.UnknownType;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-public final class YangModelBuilderUtil {
-
-    private static final Logger logger = LoggerFactory
-            .getLogger(YangModelBuilderUtil.class);
-
-    private YangModelBuilderUtil() {
-    }
-
-    /**
-     * Parse given tree and get first string value.
-     *
-     * @param treeNode
-     *            tree to parse
-     * @return first string value from given tree
-     */
-    public static String stringFromNode(final ParseTree treeNode) {
-        final String result = "";
-        for (int i = 0; i < treeNode.getChildCount(); ++i) {
-            if (treeNode.getChild(i) instanceof StringContext) {
-                final StringContext context = (StringContext) treeNode
-                        .getChild(i);
-                if (context != null) {
-                    return context.getChild(0).getText().replace("\"", "");
-                }
-            }
-        }
-        return result;
-    }
-
-    /**
-     * Parse 'description', 'reference' and 'status' statements and fill in
-     * given builder.
-     *
-     * @param ctx
-     *            context to parse
-     * @param builder
-     *            builder to fill in with parsed statements
-     */
-    public static void parseSchemaNodeArgs(final ParseTree ctx,
-            final SchemaNodeBuilder builder) {
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            final ParseTree child = ctx.getChild(i);
-            if (child instanceof Description_stmtContext) {
-                final String desc = stringFromNode(child);
-                builder.setDescription(desc);
-            } else if (child instanceof Reference_stmtContext) {
-                final String ref = stringFromNode(child);
-                builder.setReference(ref);
-            } else if (child instanceof Status_stmtContext) {
-                final Status status = parseStatus((Status_stmtContext) child);
-                builder.setStatus(status);
-            }
-        }
-    }
-
-    /**
-     * Parse given context and return its value;
-     *
-     * @param ctx
-     *            status context
-     * @return value parsed from context
-     */
-    public static Status parseStatus(final Status_stmtContext ctx) {
-        Status result = null;
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree statusArg = ctx.getChild(i);
-            if (statusArg instanceof Status_argContext) {
-                String statusArgStr = stringFromNode(statusArg);
-                if ("current".equals(statusArgStr)) {
-                    result = Status.CURRENT;
-                } else if ("deprecated".equals(statusArgStr)) {
-                    result = Status.DEPRECATED;
-                } else if ("obsolete".equals(statusArgStr)) {
-                    result = Status.OBSOLETE;
-                } else {
-                    logger.warn("Invalid 'status' statement: " + statusArgStr);
-                }
-            }
-        }
-        return result;
-    }
-
-    /**
-     * Parse given tree and returns units statement as string.
-     *
-     * @param ctx
-     *            context to parse
-     * @return value of units statement as string or null if there is no units
-     *         statement
-     */
-    public static String parseUnits(final ParseTree ctx) {
-        String units = null;
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof Units_stmtContext) {
-                units = stringFromNode(child);
-                break;
-            }
-        }
-        return units;
-    }
-
-    /**
-     * Create SchemaPath object from given path list with namespace, revision
-     * and prefix based on given values.
-     *
-     * @param actualPath
-     *            current position in model
-     * @param namespace
-     * @param revision
-     * @param prefix
-     * @return SchemaPath object.
-     */
-    public static SchemaPath createActualSchemaPath(
-            final List<String> actualPath, final URI namespace,
-            final Date revision, final String prefix) {
-        final List<QName> path = new ArrayList<QName>();
-        QName qname;
-        // start from index 1 - module name omited
-        for (int i = 1; i < actualPath.size(); i++) {
-            qname = new QName(namespace, revision, prefix, actualPath.get(i));
-            path.add(qname);
-        }
-        return new SchemaPath(path, true);
-    }
-
-    /**
-     * Create SchemaPath from given string.
-     *
-     * @param augmentPath
-     *            string representation of path
-     * @return SchemaPath object
-     */
-    public static SchemaPath parseAugmentPath(final String augmentPath) {
-        final boolean absolute = augmentPath.startsWith("/");
-        final String[] splittedPath = augmentPath.split("/");
-        List<QName> path = new ArrayList<QName>();
-        QName name;
-        for (String pathElement : splittedPath) {
-            if (pathElement.length() > 0) {
-                String[] splittedElement = pathElement.split(":");
-                if (splittedElement.length == 1) {
-                    name = new QName(null, null, null, splittedElement[0]);
-                } else {
-                    name = new QName(null, null, splittedElement[0],
-                            splittedElement[1]);
-                }
-                path.add(name);
-            }
-        }
-        return new SchemaPath(path, absolute);
-    }
-
-    /**
-     * Create java.util.List of QName objects from given key definition as
-     * string.
-     *
-     * @param keyDefinition
-     *            key definition as string
-     * @param namespace
-     *            current namespace
-     * @param revision
-     *            current revision
-     * @param prefix
-     *            current prefix
-     * @return YANG list key as java.util.List of QName objects
-     */
-    public static List<QName> createListKey(final String keyDefinition,
-            final URI namespace, final Date revision, final String prefix) {
-        List<QName> key = new ArrayList<QName>();
-        String[] splittedKey = keyDefinition.split(" ");
-
-        QName qname = null;
-        for (String keyElement : splittedKey) {
-            if (keyElement.length() != 0) {
-                qname = new QName(namespace, revision, prefix, keyElement);
-                key.add(qname);
-            }
-        }
-        return key;
-    }
-
-    /**
-     * Parse given type body of enumeration statement.
-     *
-     * @param ctx
-     *            type body context to parse
-     * @param path
-     *            actual position in YANG model
-     * @param namespace
-     * @param revision
-     * @param prefix
-     * @return List of EnumPair object parsed from given context
-     */
-    private static List<EnumTypeDefinition.EnumPair> getEnumConstants(
-            final Type_body_stmtsContext ctx, final List<String> path,
-            final URI namespace, final Date revision, final String prefix) {
-        List<EnumTypeDefinition.EnumPair> enumConstants = new ArrayList<EnumTypeDefinition.EnumPair>();
-
-        for (int j = 0; j < ctx.getChildCount(); j++) {
-            ParseTree enumSpecChild = ctx.getChild(j);
-            if (enumSpecChild instanceof Enum_specificationContext) {
-                int highestValue = -1;
-                for (int k = 0; k < enumSpecChild.getChildCount(); k++) {
-                    ParseTree enumChild = enumSpecChild.getChild(k);
-                    if (enumChild instanceof Enum_stmtContext) {
-                        EnumPair enumPair = createEnumPair(
-                                (Enum_stmtContext) enumChild, highestValue,
-                                path, namespace, revision, prefix);
-                        if (enumPair.getValue() > highestValue) {
-                            highestValue = enumPair.getValue();
-                        }
-                        enumConstants.add(enumPair);
-                    }
-                }
-            }
-        }
-        return enumConstants;
-    }
-
-    /**
-     * Parse enum statement context
-     *
-     * @param ctx
-     *            enum statement context
-     * @param highestValue
-     *            current highest value in enumeration
-     * @param path
-     *            actual position in YANG model
-     * @param namespace
-     * @param revision
-     * @param prefix
-     * @return EnumPair object parsed from given context
-     */
-    private static EnumTypeDefinition.EnumPair createEnumPair(
-            final Enum_stmtContext ctx, final int highestValue,
-            final List<String> path, final URI namespace, final Date revision,
-            final String prefix) {
-        final String name = stringFromNode(ctx);
-        final QName qname = new QName(namespace, revision, prefix, name);
-        Integer value = null;
-
-        String description = null;
-        String reference = null;
-        Status status = null;
-
-        List<String> enumPairPath = new ArrayList<String>(path);
-        enumPairPath.add(name);
-
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof Value_stmtContext) {
-                String valueStr = stringFromNode(child);
-                value = Integer.valueOf(valueStr);
-            } else if (child instanceof Description_stmtContext) {
-                description = stringFromNode(child);
-            } else if (child instanceof Reference_stmtContext) {
-                reference = stringFromNode(child);
-            } else if (child instanceof Status_stmtContext) {
-                status = parseStatus((Status_stmtContext) child);
-            }
-        }
-
-        if (value == null) {
-            value = highestValue + 1;
-        }
-        if (value < -2147483648 || value > 2147483647) {
-            throw new YangParseException(
-                    "Error on enum '"
-                            + name
-                            + "': the enum value MUST be in the range from -2147483648 to 2147483647, but was: "
-                            + value);
-        }
-
-        EnumPairImpl result = new EnumPairImpl();
-        result.qname = qname;
-        result.path = createActualSchemaPath(enumPairPath, namespace, revision,
-                prefix);
-        result.description = description;
-        result.reference = reference;
-        result.status = status;
-        result.name = name;
-        result.value = value;
-        return result;
-    }
-
-    /**
-     * Internal implementation of EnumPair.
-     */
-    private static class EnumPairImpl implements EnumTypeDefinition.EnumPair {
-        private QName qname;
-        private SchemaPath path;
-        private String description;
-        private String reference;
-        private Status status;
-        private List<UnknownSchemaNode> extensionSchemaNodes = Collections
-                .emptyList();
-        private String name;
-        private Integer value;
-
-        @Override
-        public QName getQName() {
-            return qname;
-        }
-
-        @Override
-        public SchemaPath getPath() {
-            return path;
-        }
-
-        @Override
-        public String getDescription() {
-            return description;
-        }
-
-        @Override
-        public String getReference() {
-            return reference;
-        }
-
-        @Override
-        public Status getStatus() {
-            return status;
-        }
-
-        @Override
-        public List<UnknownSchemaNode> getUnknownSchemaNodes() {
-            return extensionSchemaNodes;
-        }
-
-        @Override
-        public String getName() {
-            return name;
-        }
-
-        @Override
-        public Integer getValue() {
-            return value;
-        }
-
-        @Override
-        public int hashCode() {
-            final int prime = 31;
-            int result = 1;
-            result = prime * result + ((qname == null) ? 0 : qname.hashCode());
-            result = prime * result + ((path == null) ? 0 : path.hashCode());
-            result = prime
-                    * result
-                    + ((extensionSchemaNodes == null) ? 0
-                            : extensionSchemaNodes.hashCode());
-            result = prime * result + ((name == null) ? 0 : name.hashCode());
-            result = prime * result + ((value == null) ? 0 : value.hashCode());
-            return result;
-        }
-
-        @Override
-        public boolean equals(Object obj) {
-            if (this == obj) {
-                return true;
-            }
-            if (obj == null) {
-                return false;
-            }
-            if (getClass() != obj.getClass()) {
-                return false;
-            }
-            EnumPairImpl other = (EnumPairImpl) obj;
-            if (qname == null) {
-                if (other.qname != null) {
-                    return false;
-                }
-            } else if (!qname.equals(other.qname)) {
-                return false;
-            }
-            if (path == null) {
-                if (other.path != null) {
-                    return false;
-                }
-            } else if (!path.equals(other.path)) {
-                return false;
-            }
-            if (extensionSchemaNodes == null) {
-                if (other.extensionSchemaNodes != null) {
-                    return false;
-                }
-            } else if (!extensionSchemaNodes.equals(other.extensionSchemaNodes)) {
-                return false;
-            }
-            if (name == null) {
-                if (other.name != null) {
-                    return false;
-                }
-            } else if (!name.equals(other.name)) {
-                return false;
-            }
-            if (value == null) {
-                if (other.value != null) {
-                    return false;
-                }
-            } else if (!value.equals(other.value)) {
-                return false;
-            }
-            return true;
-        }
-
-        @Override
-        public String toString() {
-            return EnumTypeDefinition.EnumPair.class.getSimpleName() + "[name="
-                    + name + ", value=" + value + "]";
-        }
-    }
-
-    /**
-     * Get and parse range from given type body context.
-     *
-     * @param ctx
-     *            type body context to parse
-     * @return List of RangeConstraint created from this context
-     */
-    private static List<RangeConstraint> getRangeConstraints(
-            final Type_body_stmtsContext ctx) {
-        List<RangeConstraint> rangeConstraints = Collections.emptyList();
-        outer: for (int j = 0; j < ctx.getChildCount(); j++) {
-            ParseTree numRestrChild = ctx.getChild(j);
-            if (numRestrChild instanceof Numerical_restrictionsContext) {
-                for (int k = 0; k < numRestrChild.getChildCount(); k++) {
-                    ParseTree rangeChild = numRestrChild.getChild(k);
-                    if (rangeChild instanceof Range_stmtContext) {
-                        rangeConstraints = parseRangeConstraints((Range_stmtContext) rangeChild);
-                        break outer;
-                    }
-                }
-            }
-        }
-        return rangeConstraints;
-    }
-
-    /**
-     * Parse given range context.
-     *
-     * @param ctx
-     *            range context to parse
-     * @return List of RangeConstraints parsed from this context
-     */
-    private static List<RangeConstraint> parseRangeConstraints(
-            final Range_stmtContext ctx) {
-        final int line = ctx.getStart().getLine();
-        List<RangeConstraint> rangeConstraints = new ArrayList<RangeConstraint>();
-        String description = null;
-        String reference = null;
-
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof Description_stmtContext) {
-                description = stringFromNode(child);
-            } else if (child instanceof Reference_stmtContext) {
-                reference = stringFromNode(child);
-            }
-        }
-
-        String rangeStr = stringFromNode(ctx);
-        String trimmed = rangeStr.replace(" ", "");
-        String[] splittedRange = trimmed.split("\\|");
-        for (String rangeDef : splittedRange) {
-            String[] splittedRangeDef = rangeDef.split("\\.\\.");
-            Number min;
-            Number max;
-            if (splittedRangeDef.length == 1) {
-                min = max = parseNumberConstraintValue(splittedRangeDef[0],
-                        line);
-            } else {
-                min = parseNumberConstraintValue(splittedRangeDef[0], line);
-                max = parseNumberConstraintValue(splittedRangeDef[1], line);
-            }
-            RangeConstraint range = BaseConstraints.rangeConstraint(min, max,
-                    description, reference);
-            rangeConstraints.add(range);
-        }
-
-        return rangeConstraints;
-    }
-
-    /**
-     * Get and parse length from given type body context.
-     *
-     * @param ctx
-     *            type body context to parse
-     * @return List of LengthConstraint created from this context
-     */
-    private static List<LengthConstraint> getLengthConstraints(
-            final Type_body_stmtsContext ctx) {
-        List<LengthConstraint> lengthConstraints = Collections.emptyList();
-        outer: for (int j = 0; j < ctx.getChildCount(); j++) {
-            ParseTree stringRestrChild = ctx.getChild(j);
-            if (stringRestrChild instanceof String_restrictionsContext) {
-                for (int k = 0; k < stringRestrChild.getChildCount(); k++) {
-                    ParseTree lengthChild = stringRestrChild.getChild(k);
-                    if (lengthChild instanceof Length_stmtContext) {
-                        lengthConstraints = parseLengthConstraints((Length_stmtContext) lengthChild);
-                        break outer;
-                    }
-                }
-            }
-        }
-        return lengthConstraints;
-    }
-
-    /**
-     * Parse given length context.
-     *
-     * @param ctx
-     *            length context to parse
-     * @return List of LengthConstraints parsed from this context
-     */
-    private static List<LengthConstraint> parseLengthConstraints(
-            final Length_stmtContext ctx) {
-        final int line = ctx.getStart().getLine();
-        List<LengthConstraint> lengthConstraints = new ArrayList<LengthConstraint>();
-        String description = null;
-        String reference = null;
-
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof Description_stmtContext) {
-                description = stringFromNode(child);
-            } else if (child instanceof Reference_stmtContext) {
-                reference = stringFromNode(child);
-            }
-        }
-
-        String lengthStr = stringFromNode(ctx);
-        String trimmed = lengthStr.replace(" ", "");
-        String[] splittedRange = trimmed.split("\\|");
-        for (String rangeDef : splittedRange) {
-            String[] splittedRangeDef = rangeDef.split("\\.\\.");
-            Number min;
-            Number max;
-            if (splittedRangeDef.length == 1) {
-                min = max = parseNumberConstraintValue(splittedRangeDef[0],
-                        line);
-            } else {
-                min = parseNumberConstraintValue(splittedRangeDef[0], line);
-                max = parseNumberConstraintValue(splittedRangeDef[1], line);
-            }
-            LengthConstraint range = BaseConstraints.lengthConstraint(min, max,
-                    description, reference);
-            lengthConstraints.add(range);
-        }
-
-        return lengthConstraints;
-    }
-
-    /**
-     * @param value
-     *            value to parse
-     * @return wrapper object of primitive java type or UnknownBoundaryNumber if
-     *         type is one of special YANG values 'min' or 'max'
-     */
-    private static Number parseNumberConstraintValue(final String value,
-            final int line) {
-        Number result = null;
-        if ("min".equals(value) || "max".equals(value)) {
-            result = new UnknownBoundaryNumber(value);
-        } else {
-            try {
-                result = Long.valueOf(value);
-            } catch (NumberFormatException e) {
-                throw new YangParseException("Error on line " + line
-                        + ": Unable to parse range value '" + value + "'.", e);
-            }
-        }
-        return result;
-    }
-
-    private static List<PatternConstraint> getPatternConstraint(
-            final Type_body_stmtsContext ctx) {
-        List<PatternConstraint> patterns = new ArrayList<PatternConstraint>();
-
-        outer: for (int j = 0; j < ctx.getChildCount(); j++) {
-            ParseTree stringRestrChild = ctx.getChild(j);
-            if (stringRestrChild instanceof String_restrictionsContext) {
-                for (int k = 0; k < stringRestrChild.getChildCount(); k++) {
-                    ParseTree lengthChild = stringRestrChild.getChild(k);
-                    if (lengthChild instanceof Pattern_stmtContext) {
-                        patterns.add(parsePatternConstraint((Pattern_stmtContext) lengthChild));
-                        if (k == lengthChild.getChildCount() - 1) {
-                            break outer;
-                        }
-                    }
-                }
-            }
-        }
-        return patterns;
-    }
-
-    /**
-     * Internal helper method.
-     *
-     * @param ctx
-     *            pattern context
-     * @return PatternConstraint object
-     */
-    private static PatternConstraint parsePatternConstraint(
-            final Pattern_stmtContext ctx) {
-        String description = null;
-        String reference = null;
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof Description_stmtContext) {
-                description = stringFromNode(child);
-            } else if (child instanceof Reference_stmtContext) {
-                reference = stringFromNode(child);
-            }
-        }
-        String pattern = patternStringFromNode(ctx);
-        return BaseConstraints.patternConstraint(pattern, description,
-                reference);
-    }
-
-    /**
-     * Parse given context and return pattern value.
-     *
-     * @param ctx
-     *            context to parse
-     * @return pattern value as String
-     */
-    public static String patternStringFromNode(final Pattern_stmtContext ctx) {
-        StringBuilder result = new StringBuilder();
-        for (int i = 0; i < ctx.getChildCount(); ++i) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof StringContext) {
-                for (int j = 0; j < child.getChildCount(); j++) {
-                    if (j % 2 == 0) {
-                        String patternToken = child.getChild(j).getText();
-                        result.append(patternToken.substring(1,
-                                patternToken.length() - 1));
-                    }
-                }
-            }
-        }
-        return result.toString();
-    }
-
-    /**
-     * Get fraction digits value from context.
-     *
-     * @param ctx
-     *            type body context to parse
-     * @return 'fraction-digits' value if present in given context, null
-     *         otherwise
-     */
-    private static Integer getFractionDigits(Type_body_stmtsContext ctx) {
-        Integer result = null;
-        for (int j = 0; j < ctx.getChildCount(); j++) {
-            ParseTree dec64specChild = ctx.getChild(j);
-            if (dec64specChild instanceof Decimal64_specificationContext) {
-                result = parseFractionDigits((Decimal64_specificationContext) dec64specChild);
-            }
-        }
-        return result;
-    }
-
-    private static Integer parseFractionDigits(
-            Decimal64_specificationContext ctx) {
-        Integer result = null;
-        for (int k = 0; k < ctx.getChildCount(); k++) {
-            ParseTree fdChild = ctx.getChild(k);
-            if (fdChild instanceof Fraction_digits_stmtContext) {
-                String value = stringFromNode(fdChild);
-                try {
-                    result = Integer.valueOf(value);
-                } catch (NumberFormatException e) {
-                    throw new YangParseException(
-                            "Unable to parse fraction digits value '" + value
-                                    + "'.", e);
-                }
-            }
-        }
-        return result;
-    }
-
-    /**
-     * Internal helper method for parsing bit statements from given type body
-     * context.
-     *
-     * @param ctx
-     *            type body context to parse
-     * @param actualPath
-     *            current position in YANG model
-     * @param namespace
-     * @param revision
-     * @param prefix
-     * @return List of Bit objects created from this context
-     */
-    private static List<BitsTypeDefinition.Bit> getBits(
-            Type_body_stmtsContext ctx, List<String> actualPath, URI namespace,
-            Date revision, String prefix) {
-        final List<BitsTypeDefinition.Bit> bits = new ArrayList<BitsTypeDefinition.Bit>();
-        for (int j = 0; j < ctx.getChildCount(); j++) {
-            ParseTree bitsSpecChild = ctx.getChild(j);
-            if (bitsSpecChild instanceof Bits_specificationContext) {
-                long highestPosition = -1;
-                for (int k = 0; k < bitsSpecChild.getChildCount(); k++) {
-                    ParseTree bitChild = bitsSpecChild.getChild(k);
-                    if (bitChild instanceof Bit_stmtContext) {
-                        Bit bit = parseBit((Bit_stmtContext) bitChild,
-                                highestPosition, actualPath, namespace,
-                                revision, prefix);
-                        if (bit.getPosition() > highestPosition) {
-                            highestPosition = bit.getPosition();
-                        }
-                        bits.add(bit);
-                    }
-                }
-            }
-        }
-        return bits;
-    }
-
-    /**
-     * Internal helper method for parsing bit context.
-     *
-     * @param ctx
-     *            bit statement context to parse
-     * @param highestPosition
-     *            current highest position in bits type
-     * @param actualPath
-     *            current position in YANG model
-     * @param namespace
-     * @param revision
-     * @param prefix
-     * @return Bit object parsed from this context
-     */
-    private static BitsTypeDefinition.Bit parseBit(final Bit_stmtContext ctx,
-            long highestPosition, List<String> actualPath, final URI namespace,
-            final Date revision, final String prefix) {
-        String name = stringFromNode(ctx);
-        final QName qname = new QName(namespace, revision, prefix, name);
-        Long position = null;
-
-        String description = null;
-        String reference = null;
-        Status status = Status.CURRENT;
-
-        Stack<String> bitPath = new Stack<String>();
-        bitPath.addAll(actualPath);
-        bitPath.add(name);
-
-        SchemaPath schemaPath = createActualSchemaPath(bitPath, namespace,
-                revision, prefix);
-
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof Position_stmtContext) {
-                String positionStr = stringFromNode(child);
-                position = Long.valueOf(positionStr);
-            } else if (child instanceof Description_stmtContext) {
-                description = stringFromNode(child);
-            } else if (child instanceof Reference_stmtContext) {
-                reference = stringFromNode(child);
-            } else if (child instanceof Status_stmtContext) {
-                status = parseStatus((Status_stmtContext) child);
-            }
-        }
-
-        if (position == null) {
-            position = highestPosition + 1;
-        }
-        if (position < 0 || position > 4294967295L) {
-            throw new YangParseException(
-                    "Error on bit '"
-                            + name
-                            + "': the position value MUST be in the range 0 to 4294967295");
-        }
-
-        final List<UnknownSchemaNode> unknownNodes = Collections.emptyList();
-        return new BitImpl(position, qname, schemaPath, description, reference,
-                status, unknownNodes);
-    }
-
-    /**
-     * Parse orderedby statement.
-     *
-     * @param childNode
-     *            Ordered_by_stmtContext
-     * @return true, if orderedby contains value 'user' or false otherwise
-     */
-    public static boolean parseUserOrdered(Ordered_by_stmtContext childNode) {
-        boolean result = false;
-        for (int j = 0; j < childNode.getChildCount(); j++) {
-            ParseTree orderArg = childNode.getChild(j);
-            if (orderArg instanceof Ordered_by_argContext) {
-                String orderStr = stringFromNode(orderArg);
-                if ("system".equals(orderStr)) {
-                    result = false;
-                } else if ("user".equals(orderStr)) {
-                    result = true;
-                } else {
-                    logger.warn("Invalid 'orderedby' statement.");
-                }
-            }
-        }
-        return result;
-    }
-
-    /**
-     * Parse given config context and return true if it contains string 'true',
-     * false otherwise.
-     *
-     * @param ctx
-     *            config context to parse.
-     * @return true if given context contains string 'true', false otherwise
-     */
-    public static boolean parseConfig(final Config_stmtContext ctx) {
-        boolean result = false;
-        if (ctx != null) {
-            for (int i = 0; i < ctx.getChildCount(); ++i) {
-                final ParseTree configContext = ctx.getChild(i);
-                if (configContext instanceof Config_argContext) {
-                    final String value = stringFromNode(configContext);
-                    if ("true".equals(value)) {
-                        result = true;
-                        break;
-                    }
-                }
-            }
-        }
-        return result;
-    }
-
-    /**
-     * Parse given type body and creates UnknownType definition.
-     *
-     * @param typedefQName
-     *            qname of current type
-     * @param ctx
-     *            type body
-     * @return UnknownType object with constraints from parsed type body
-     */
-    public static TypeDefinition<?> parseUnknownTypeBody(QName typedefQName,
-            Type_body_stmtsContext ctx) {
-        UnknownType.Builder unknownType = new UnknownType.Builder(typedefQName);
-
-        if (ctx != null) {
-            List<RangeConstraint> rangeStatements = getRangeConstraints(ctx);
-            List<LengthConstraint> lengthStatements = getLengthConstraints(ctx);
-            List<PatternConstraint> patternStatements = getPatternConstraint(ctx);
-            Integer fractionDigits = getFractionDigits(ctx);
-
-            unknownType.rangeStatements(rangeStatements);
-            unknownType.lengthStatements(lengthStatements);
-            unknownType.patterns(patternStatements);
-            unknownType.fractionDigits(fractionDigits);
-        }
-
-        return unknownType.build();
-    }
-
-    /**
-     * Create TypeDefinition object based on given type name and type body.
-     *
-     * @param typeName
-     *            name of type
-     * @param typeBody
-     *            type body
-     * @param actualPath
-     *            current path in schema
-     * @param namespace
-     *            current namespace
-     * @param revision
-     *            current revision
-     * @param prefix
-     *            current prefix
-     * @return TypeDefinition object based on parsed values.
-     */
-    public static TypeDefinition<?> parseTypeBody(final String typeName,
-            final Type_body_stmtsContext typeBody,
-            final List<String> actualPath, final URI namespace,
-            final Date revision, final String prefix) {
-        TypeDefinition<?> type = null;
-
-        List<RangeConstraint> rangeStatements = getRangeConstraints(typeBody);
-        Integer fractionDigits = getFractionDigits(typeBody);
-        List<LengthConstraint> lengthStatements = getLengthConstraints(typeBody);
-        List<PatternConstraint> patternStatements = getPatternConstraint(typeBody);
-        List<EnumTypeDefinition.EnumPair> enumConstants = getEnumConstants(
-                typeBody, actualPath, namespace, revision, prefix);
-
-        if ("decimal64".equals(typeName)) {
-            type = new Decimal64(actualPath, namespace, revision,
-                    fractionDigits);
-        } else if (typeName.startsWith("int")) {
-            if (typeName.equals("int8")) {
-                type = new Int8(actualPath, namespace, revision,
-                        rangeStatements, null, null);
-            } else if (typeName.equals("int16")) {
-                type = new Int16(actualPath, namespace, revision,
-                        rangeStatements, null, null);
-            } else if (typeName.equals("int32")) {
-                type = new Int32(actualPath, namespace, revision,
-                        rangeStatements, null, null);
-            } else if (typeName.equals("int64")) {
-                type = new Int64(actualPath, namespace, revision,
-                        rangeStatements, null, null);
-            }
-        } else if (typeName.startsWith("uint")) {
-            if (typeName.equals("uint8")) {
-                type = new Uint8(actualPath, namespace, revision,
-                        rangeStatements, null, null);
-            } else if (typeName.equals("uint16")) {
-                type = new Uint16(actualPath, namespace, revision,
-                        rangeStatements, null, null);
-            } else if (typeName.equals("uint32")) {
-                type = new Uint32(actualPath, namespace, revision,
-                        rangeStatements, null, null);
-            } else if (typeName.equals("uint64")) {
-                type = new Uint64(actualPath, namespace, revision,
-                        rangeStatements, null, null);
-            }
-        } else if ("enumeration".equals(typeName)) {
-            type = new EnumerationType(actualPath, namespace, revision,
-                    enumConstants);
-        } else if ("string".equals(typeName)) {
-            type = new StringType(actualPath, namespace, revision,
-                    lengthStatements, patternStatements);
-        } else if ("bits".equals(typeName)) {
-            type = new BitsType(actualPath, namespace, revision, getBits(
-                    typeBody, actualPath, namespace, revision, prefix));
-        } else if ("leafref".equals(typeName)) {
-            final String path = parseLeafrefPath(typeBody);
-            final boolean absolute = path.startsWith("/");
-            RevisionAwareXPath xpath = new RevisionAwareXPathImpl(path,
-                    absolute);
-            type = new Leafref(actualPath, namespace, revision, xpath);
-        } else if ("binary".equals(typeName)) {
-            List<Byte> bytes = Collections.emptyList();
-            type = new BinaryType(actualPath, namespace, revision, bytes,
-                    lengthStatements, null);
-        } else if ("instance-identifier".equals(typeName)) {
-            boolean requireInstance = isRequireInstance(typeBody);
-            type = new InstanceIdentifier(actualPath, namespace, revision,
-                    null, requireInstance);
-        }
-        return type;
-    }
-
-    public static String getIdentityrefBase(Type_body_stmtsContext ctx) {
-        String result = null;
-        outer: for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof Identityref_specificationContext) {
-                for (int j = 0; j < child.getChildCount(); j++) {
-                    ParseTree baseArg = child.getChild(j);
-                    if (baseArg instanceof Base_stmtContext) {
-                        result = stringFromNode(baseArg);
-                        break outer;
-                    }
-                }
-            }
-        }
-        return result;
-    }
-
-    private static boolean isRequireInstance(Type_body_stmtsContext ctx) {
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof Require_instance_stmtContext) {
-                for (int j = 0; j < child.getChildCount(); j++) {
-                    ParseTree reqArg = child.getChild(j);
-                    if (reqArg instanceof Require_instance_argContext) {
-                        return Boolean.valueOf(stringFromNode(reqArg));
-                    }
-                }
-            }
-        }
-        return false;
-    }
-
-    private static String parseLeafrefPath(Type_body_stmtsContext ctx) {
-        for (int i = 0; i < ctx.getChildCount(); i++) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof Leafref_specificationContext) {
-                for (int j = 0; j < child.getChildCount(); j++) {
-                    ParseTree leafRefSpec = child.getChild(j);
-                    if (leafRefSpec instanceof Path_stmtContext) {
-                        return stringFromNode(leafRefSpec);
-                    }
-                }
-            }
-        }
-        return null;
-    }
-
-    /**
-     * Internal helper method for parsing Must_stmtContext.
-     *
-     * @param ctx
-     *            Must_stmtContext
-     * @return MustDefinition object based on parsed context
-     */
-    public static MustDefinition parseMust(final YangParser.Must_stmtContext ctx) {
-        StringBuilder mustText = new StringBuilder();
-        String description = null;
-        String reference = null;
-        String errorAppTag = null;
-        String errorMessage = null;
-        for (int i = 0; i < ctx.getChildCount(); ++i) {
-            ParseTree child = ctx.getChild(i);
-            if (child instanceof StringContext) {
-                final StringContext context = (StringContext) child;
-                if (context.getChildCount() == 1) {
-                    String mustPart = context.getChild(0).getText();
-                    // trim start and end quotation
-                    mustText.append(mustPart.substring(1, mustPart.length() - 1));
-                } else {
-                    for (int j = 0; j < context.getChildCount(); j++) {
-                        String mustPart = context.getChild(j).getText();
-                        if (j == 0) {
-                            mustText.append(mustPart.substring(0,
-                                    mustPart.length() - 1));
-                            continue;
-                        }
-                        if (j % 2 == 0) {
-                            mustText.append(mustPart.substring(1));
-                        }
-                    }
-                }
-            } else if (child instanceof Description_stmtContext) {
-                description = stringFromNode(child);
-            } else if (child instanceof Reference_stmtContext) {
-                reference = stringFromNode(child);
-            } else if (child instanceof Error_app_tag_stmtContext) {
-                errorAppTag = stringFromNode(child);
-            } else if (child instanceof Error_message_stmtContext) {
-                errorMessage = stringFromNode(child);
-            }
-        }
-
-        MustDefinition must = new MustDefinitionImpl(mustText.toString(),
-                description, reference, errorAppTag, errorMessage);
-        return must;
-    }
-
-    /**
-     * Parse given tree and set constraints to given builder.
-     *
-     * @param ctx
-     *            context to search
-     * @param constraints
-     *            ConstraintsBuilder to fill
-     */
-    public static void parseConstraints(final ParseTree ctx,
-            final ConstraintsBuilder constraints) {
-        for (int i = 0; i < ctx.getChildCount(); ++i) {
-            final ParseTree childNode = ctx.getChild(i);
-            if (childNode instanceof Max_elements_stmtContext) {
-                Integer max = Integer.valueOf(stringFromNode(childNode));
-                constraints.setMinElements(max);
-            } else if (childNode instanceof Min_elements_stmtContext) {
-                Integer min = Integer.valueOf(stringFromNode(childNode));
-                constraints.setMinElements(min);
-            } else if (childNode instanceof Must_stmtContext) {
-                MustDefinition must = parseMust((Must_stmtContext) childNode);
-                constraints.addMustDefinition(must);
-            } else if (childNode instanceof Mandatory_stmtContext) {
-                for (int j = 0; j < childNode.getChildCount(); j++) {
-                    ParseTree mandatoryTree = ctx.getChild(j);
-                    if (mandatoryTree instanceof Mandatory_argContext) {
-                        Boolean mandatory = Boolean
-                                .valueOf(stringFromNode(mandatoryTree));
-                        constraints.setMandatory(mandatory);
-                    }
-                }
-            } else if (childNode instanceof When_stmtContext) {
-                constraints.addWhenCondition(stringFromNode(childNode));
-            }
-        }
-    }
-
-    /**
-     * Parse given context and return yin value.
-     *
-     * @param ctx
-     *            context to parse
-     * @return true if value is 'true', false otherwise
-     */
-    public static boolean parseYinValue(Argument_stmtContext ctx) {
-        boolean yinValue = false;
-        outer: for (int j = 0; j < ctx.getChildCount(); j++) {
-            ParseTree yin = ctx.getChild(j);
-            if (yin instanceof Yin_element_stmtContext) {
-                for (int k = 0; k < yin.getChildCount(); k++) {
-                    ParseTree yinArg = yin.getChild(k);
-                    if (yinArg instanceof Yin_element_argContext) {
-                        String yinString = stringFromNode(yinArg);
-                        if ("true".equals(yinString)) {
-                            yinValue = true;
-                            break outer;
-                        }
-                    }
-                }
-            }
-        }
-        return yinValue;
-    }
-
-    /**
-     * Check this base type.
-     *
-     * @param typeName
-     *            base YANG type name
-     * @param moduleName
-     *            name of current module
-     * @param line
-     *            line in module
-     * @throws YangParseException
-     *             if this is one of YANG type which MUST contain additional
-     *             informations in its body
-     */
-    public static void checkMissingBody(final String typeName,
-            final String moduleName, final int line) throws YangParseException {
-        if ("decimal64".equals(typeName)) {
-            throw new YangParseException(moduleName, line,
-                    "The 'fraction-digits' statement MUST be present if the type is 'decimal64'.");
-        } else if ("identityref".equals(typeName)) {
-            throw new YangParseException(moduleName, line,
-                    "The 'base' statement MUST be present if the type is 'identityref'.");
-        } else if ("leafref".equals(typeName)) {
-            throw new YangParseException(moduleName, line,
-                    "The 'path' statement MUST be present if the type is 'leafref'.");
-        } else if("bits".equals(typeName)) {
-            throw new YangParseException(moduleName, line,
-                    "The 'bit' statement MUST be present if the type is 'bits'.");
-        } else if("enumeration".equals(typeName)) {
-            throw new YangParseException(moduleName, line,
-                    "The 'enum' statement MUST be present if the type is 'enumeration'.");
-        }
-    }
-
-    public static RefineHolder parseRefine(Refine_stmtContext child) {
-        final String refineTarget = stringFromNode(child);
-        final RefineHolder refine = new RefineHolder(refineTarget, child
-                .getStart().getLine());
-        for (int j = 0; j < child.getChildCount(); j++) {
-            ParseTree refinePom = child.getChild(j);
-            if (refinePom instanceof Refine_pomContext) {
-                for (int k = 0; k < refinePom.getChildCount(); k++) {
-                    ParseTree refineStmt = refinePom.getChild(k);
-                    if (refineStmt instanceof Refine_leaf_stmtsContext) {
-                        parseRefine(refine,
-                                (Refine_leaf_stmtsContext) refineStmt);
-                    } else if (refineStmt instanceof Refine_container_stmtsContext) {
-                        parseRefine(refine,
-                                (Refine_container_stmtsContext) refineStmt);
-                    } else if (refineStmt instanceof Refine_list_stmtsContext) {
-                        parseRefine(refine,
-                                (Refine_list_stmtsContext) refineStmt);
-                    } else if (refineStmt instanceof Refine_leaf_list_stmtsContext) {
-                        parseRefine(refine,
-                                (Refine_leaf_list_stmtsContext) refineStmt);
-                    } else if (refineStmt instanceof Refine_choice_stmtsContext) {
-                        parseRefine(refine,
-                                (Refine_choice_stmtsContext) refineStmt);
-                    } else if (refineStmt instanceof Refine_anyxml_stmtsContext) {
-                        parseRefine(refine,
-                                (Refine_anyxml_stmtsContext) refineStmt);
-                    }
-                }
-            }
-        }
-        return refine;
-    }
-
-    private static RefineHolder parseRefine(RefineHolder refine,
-            Refine_leaf_stmtsContext refineStmt) {
-        for (int i = 0; i < refineStmt.getChildCount(); i++) {
-            ParseTree refineArg = refineStmt.getChild(i);
-            if (refineArg instanceof Default_stmtContext) {
-                String defaultStr = stringFromNode(refineArg);
-                refine.setDefaultStr(defaultStr);
-            } else if (refineArg instanceof Mandatory_stmtContext) {
-                for (int j = 0; j < refineArg.getChildCount(); j++) {
-                    ParseTree mandatoryTree = refineArg.getChild(j);
-                    if (mandatoryTree instanceof Mandatory_argContext) {
-                        Boolean mandatory = Boolean
-                                .valueOf(stringFromNode(mandatoryTree));
-                        refine.setMandatory(mandatory);
-                    }
-                }
-            } else if (refineArg instanceof Must_stmtContext) {
-                MustDefinition must = parseMust((Must_stmtContext) refineArg);
-                refine.setMust(must);
-
-            }
-        }
-        return refine;
-    }
-
-    private static RefineHolder parseRefine(RefineHolder refine,
-            Refine_container_stmtsContext refineStmt) {
-        for (int m = 0; m < refineStmt.getChildCount(); m++) {
-            ParseTree refineArg = refineStmt.getChild(m);
-            if (refineArg instanceof Must_stmtContext) {
-                MustDefinition must = parseMust((Must_stmtContext) refineArg);
-                refine.setMust(must);
-            } else if (refineArg instanceof Presence_stmtContext) {
-                refine.setPresence(true);
-            }
-        }
-        return refine;
-    }
-
-    private static RefineHolder parseRefine(RefineHolder refine,
-            Refine_list_stmtsContext refineStmt) {
-        for (int m = 0; m < refineStmt.getChildCount(); m++) {
-            ParseTree refineArg = refineStmt.getChild(m);
-            if (refineArg instanceof Must_stmtContext) {
-                MustDefinition must = parseMust((Must_stmtContext) refineArg);
-                refine.setMust(must);
-            } else if (refineArg instanceof Max_elements_stmtContext) {
-                Integer max = Integer.valueOf(stringFromNode(refineArg));
-                refine.setMinElements(max);
-            } else if (refineArg instanceof Min_elements_stmtContext) {
-                Integer min = Integer.valueOf(stringFromNode(refineArg));
-                refine.setMinElements(min);
-            }
-        }
-        return refine;
-    }
-
-    private static RefineHolder parseRefine(RefineHolder refine,
-            Refine_leaf_list_stmtsContext refineStmt) {
-        for (int m = 0; m < refineStmt.getChildCount(); m++) {
-            ParseTree refineArg = refineStmt.getChild(m);
-            if (refineArg instanceof Must_stmtContext) {
-                MustDefinition must = parseMust((Must_stmtContext) refineArg);
-                refine.setMust(must);
-            } else if (refineArg instanceof Max_elements_stmtContext) {
-                Integer max = Integer.valueOf(stringFromNode(refineArg));
-                refine.setMinElements(max);
-            } else if (refineArg instanceof Min_elements_stmtContext) {
-                Integer min = Integer.valueOf(stringFromNode(refineArg));
-                refine.setMinElements(min);
-            }
-        }
-        return refine;
-    }
-
-    private static RefineHolder parseRefine(RefineHolder refine,
-            Refine_choice_stmtsContext refineStmt) {
-        for (int i = 0; i < refineStmt.getChildCount(); i++) {
-            ParseTree refineArg = refineStmt.getChild(i);
-            if (refineArg instanceof Default_stmtContext) {
-                String defaultStr = stringFromNode(refineArg);
-                refine.setDefaultStr(defaultStr);
-            } else if (refineArg instanceof Mandatory_stmtContext) {
-                for (int j = 0; j < refineArg.getChildCount(); j++) {
-                    ParseTree mandatoryTree = refineArg.getChild(j);
-                    if (mandatoryTree instanceof Mandatory_argContext) {
-                        Boolean mandatory = Boolean
-                                .valueOf(stringFromNode(mandatoryTree));
-                        refine.setMandatory(mandatory);
-                    }
-                }
-            }
-        }
-        return refine;
-    }
-
-    private static RefineHolder parseRefine(RefineHolder refine,
-            Refine_anyxml_stmtsContext refineStmt) {
-        for (int i = 0; i < refineStmt.getChildCount(); i++) {
-            ParseTree refineArg = refineStmt.getChild(i);
-            if (refineArg instanceof Must_stmtContext) {
-                MustDefinition must = parseMust((Must_stmtContext) refineArg);
-                refine.setMust(must);
-            } else if (refineArg instanceof Mandatory_stmtContext) {
-                for (int j = 0; j < refineArg.getChildCount(); j++) {
-                    ParseTree mandatoryTree = refineArg.getChild(j);
-                    if (mandatoryTree instanceof Mandatory_argContext) {
-                        Boolean mandatory = Boolean
-                                .valueOf(stringFromNode(mandatoryTree));
-                        refine.setMandatory(mandatory);
-                    }
-                }
-            }
-        }
-        return refine;
-    }
-
-}