*/
package org.opendaylight.yangtools.yang.parser.rfc7950.stmt;
-import static org.opendaylight.yangtools.yang.common.YangConstants.RFC6020_YANG_NAMESPACE;
-import static org.opendaylight.yangtools.yang.common.YangConstants.YANG_XPATH_FUNCTIONS_PREFIX;
-
import com.google.common.annotations.Beta;
import com.google.common.base.Splitter;
-import com.google.common.collect.ImmutableBiMap;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
-import java.util.regex.Matcher;
import java.util.regex.Pattern;
-import javax.annotation.Nonnull;
-import javax.annotation.RegEx;
-import javax.xml.xpath.XPath;
-import javax.xml.xpath.XPathExpressionException;
-import javax.xml.xpath.XPathFactory;
+import org.checkerframework.checker.regex.qual.Regex;
+import org.eclipse.jdt.annotation.NonNull;
import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.common.YangVersion;
-import org.opendaylight.yangtools.yang.model.api.RevisionAwareXPath;
+import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
+import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Descendant;
import org.opendaylight.yangtools.yang.model.api.stmt.UnresolvedNumber;
-import org.opendaylight.yangtools.yang.model.util.RevisionAwareXPathImpl;
import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
/**
- * Utility class for dealing with arguments encountered by StatementSupport classes. Note that using this class may
- * result in thread-local state getting attached. To clean up this state, please invoke
- * {@link #detachFromCurrentThread()} when appropriate.
+ * Utility class for dealing with arguments encountered by StatementSupport classes.
*/
@Beta
public final class ArgumentUtils {
public static final Splitter PIPE_SPLITTER = Splitter.on('|').trimResults();
public static final Splitter TWO_DOTS_SPLITTER = Splitter.on("..").trimResults();
- private static final Logger LOG = LoggerFactory.getLogger(ArgumentUtils.class);
-
- @RegEx
- private static final String YANG_XPATH_FUNCTIONS_STRING =
- "(re-match|deref|derived-from(-or-self)?|enum-value|bit-is-set)([ \t\r\n]*)(\\()";
- private static final Pattern YANG_XPATH_FUNCTIONS_PATTERN = Pattern.compile(YANG_XPATH_FUNCTIONS_STRING);
-
- @RegEx
+ @Regex
private static final String PATH_ABS_STR = "/[^/].*";
private static final Pattern PATH_ABS = Pattern.compile(PATH_ABS_STR);
private static final Splitter SLASH_SPLITTER = Splitter.on('/').omitEmptyStrings().trimResults();
- // XPathFactory is not thread-safe, rather than locking around a shared instance, we use a thread-local one.
- private static final ThreadLocal<XPathFactory> XPATH_FACTORY = new ThreadLocal<XPathFactory>() {
- @Override
- protected XPathFactory initialValue() {
- return XPathFactory.newInstance();
- }
- };
-
// these objects are to compare whether range has MAX or MIN value
// none of these values should appear as Yang number according to spec so they are safe to use
private static final BigDecimal YANG_MIN_NUM = BigDecimal.valueOf(-Double.MAX_VALUE);
private static final BigDecimal YANG_MAX_NUM = BigDecimal.valueOf(Double.MAX_VALUE);
private ArgumentUtils() {
- throw new UnsupportedOperationException();
+ // Hidden on purpose
}
public static int compareNumbers(final Number n1, final Number n2) {
}
}
- public static @Nonnull Boolean parseBoolean(final StmtContext<?, ?, ?> ctx, final String input) {
+ public static @NonNull Boolean parseBoolean(final StmtContext<?, ?, ?> ctx, final String input) {
if ("true".equals(input)) {
return Boolean.TRUE;
} else if ("false".equals(input)) {
return Boolean.FALSE;
} else {
+ final StatementDefinition def = ctx.getPublicDefinition();
throw new SourceException(ctx.getStatementSourceReference(),
"Invalid '%s' statement %s '%s', it can be either 'true' or 'false'",
- ctx.getPublicDefinition().getStatementName(), ctx.getPublicDefinition().getArgumentName(), input);
+ def.getStatementName(), def.getArgumentDefinition().get().getArgumentName(), input);
}
}
- public static RevisionAwareXPath parseXPath(final StmtContext<?, ?, ?> ctx, final String path) {
- final XPath xPath = XPATH_FACTORY.get().newXPath();
- xPath.setNamespaceContext(StmtNamespaceContext.create(ctx,
- ImmutableBiMap.of(RFC6020_YANG_NAMESPACE.toString(), YANG_XPATH_FUNCTIONS_PREFIX)));
-
- final String trimmed = trimSingleLastSlashFromXPath(path);
- try {
- // XPath extension functions have to be prefixed
- // yang-specific XPath functions are in fact extended functions, therefore we have to add
- // "yang" prefix to them so that they can be properly validated with the XPath.compile() method
- // the "yang" prefix is bound to RFC6020 YANG namespace
- final String prefixedXPath = addPrefixToYangXPathFunctions(trimmed, ctx);
- // TODO: we could capture the result and expose its 'evaluate' method
- xPath.compile(prefixedXPath);
- } catch (final XPathExpressionException e) {
- LOG.warn("Argument \"{}\" is not valid XPath string at \"{}\"", path, ctx.getStatementSourceReference(), e);
- }
+ public static boolean isAbsoluteXPath(final String path) {
+ return PATH_ABS.matcher(path).matches();
+ }
- return new RevisionAwareXPathImpl(path, PATH_ABS.matcher(path).matches());
+ public static Absolute parseAbsoluteSchemaNodeIdentifier(final StmtContext<?, ?, ?> ctx, final String str) {
+ // FIXME: this does accept check for a leading slash
+ return Absolute.of(parseNodeIdentifiers(ctx, str));
+ }
+
+ public static Descendant parseDescendantSchemaNodeIdentifier(final StmtContext<?, ?, ?> ctx, final String str) {
+ // FIXME: this does accept a leading slash
+ return Descendant.of(parseNodeIdentifiers(ctx, str));
}
- @SuppressWarnings("checkstyle:illegalCatch")
public static SchemaNodeIdentifier nodeIdentifierFromPath(final StmtContext<?, ?, ?> ctx, final String path) {
+ final List<QName> qnames = parseNodeIdentifiers(ctx, path);
+ return PATH_ABS.matcher(path).matches() ? Absolute.of(qnames) : Descendant.of(qnames);
+ }
+
+ @SuppressWarnings("checkstyle:illegalCatch")
+ private static List<QName> parseNodeIdentifiers(final StmtContext<?, ?, ?> ctx, final String path) {
// FIXME: is the path trimming really necessary??
- final List<QName> qNames = new ArrayList<>();
+ final List<QName> qnames = new ArrayList<>();
for (final String nodeName : SLASH_SPLITTER.split(trimSingleLastSlashFromXPath(path))) {
try {
- final QName qName = StmtContextUtils.qnameFromArgument(ctx, nodeName);
- qNames.add(qName);
+ qnames.add(StmtContextUtils.parseNodeIdentifier(ctx, nodeName));
} catch (final RuntimeException e) {
throw new SourceException(ctx.getStatementSourceReference(), e,
"Failed to parse node '%s' in path '%s'", nodeName, path);
}
}
- return SchemaNodeIdentifier.create(qNames, PATH_ABS.matcher(path).matches());
- }
-
- /**
- * Cleanup any resources attached to the current thread. Threads interacting with this class can cause thread-local
- * caches to them. Invoke this method if you want to detach those resources.
- */
- public static void detachFromCurrentThread() {
- XPATH_FACTORY.remove();
- }
-
- private static String addPrefixToYangXPathFunctions(final String path, final StmtContext<?, ?, ?> ctx) {
- if (ctx.getRootVersion() == YangVersion.VERSION_1_1) {
- // FIXME once Java 9 is available, change this to StringBuilder as Matcher.appendReplacement() and
- // Matcher.appendTail() will accept StringBuilder parameter in Java 9
- final StringBuffer result = new StringBuffer();
- final String prefix = YANG_XPATH_FUNCTIONS_PREFIX + ":";
- final Matcher matcher = YANG_XPATH_FUNCTIONS_PATTERN.matcher(path);
- while (matcher.find()) {
- matcher.appendReplacement(result, prefix + matcher.group());
- }
-
- matcher.appendTail(result);
- return result.toString();
+ if (qnames.isEmpty()) {
+ throw new SourceException("Schema node identifier must not be empty", ctx.getStatementSourceReference());
}
-
- return path;
+ return qnames;
}
private static String trimSingleLastSlashFromXPath(final String path) {
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