-/**
+/*
* Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
*/
package org.opendaylight.yangtools.yang.parser.impl;
+import com.google.common.base.Verify;
+import java.util.ArrayDeque;
import java.util.ArrayList;
+import java.util.Deque;
import java.util.List;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import org.antlr.v4.runtime.tree.ParseTree;
-import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParser;
+import javax.annotation.concurrent.Immutable;
+import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParser.ArgumentContext;
+import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParser.KeywordContext;
+import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParser.StatementContext;
import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParserBaseListener;
import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.common.QNameModule;
import org.opendaylight.yangtools.yang.common.YangConstants;
+import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
+import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
+import org.opendaylight.yangtools.yang.parser.spi.source.DeclarationInTextSource;
import org.opendaylight.yangtools.yang.parser.spi.source.PrefixToModule;
import org.opendaylight.yangtools.yang.parser.spi.source.QNameToStatementDefinition;
import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
import org.opendaylight.yangtools.yang.parser.spi.source.StatementWriter;
import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.Utils;
+@Immutable
public class YangStatementParserListenerImpl extends YangStatementParserBaseListener {
+ private static final class Counter {
+ private int value = 0;
- private StatementWriter writer;
- private StatementSourceReference ref;
+ int getAndIncrement() {
+ return value++;
+ }
+ }
+
+ private final List<String> toBeSkipped = new ArrayList<>();
+ private final Deque<Counter> counters = new ArrayDeque<>();
+ private final String sourceName;
private QNameToStatementDefinition stmtDef;
private PrefixToModule prefixes;
- private List<String> toBeSkipped = new ArrayList<>();
- private static final Logger LOG = LoggerFactory.getLogger(YangStatementParserListenerImpl.class);
+ private StatementWriter writer;
- public YangStatementParserListenerImpl(StatementSourceReference ref) {
- this.ref = ref;
+ public YangStatementParserListenerImpl(final String sourceName) {
+ this.sourceName = sourceName;
}
- public void setAttributes(StatementWriter writer, QNameToStatementDefinition stmtDef) {
+ public void setAttributes(final StatementWriter writer, final QNameToStatementDefinition stmtDef) {
this.writer = writer;
this.stmtDef = stmtDef;
+ initCounters();
}
- public void setAttributes(StatementWriter writer, QNameToStatementDefinition stmtDef, PrefixToModule prefixes) {
+ public void setAttributes(final StatementWriter writer, final QNameToStatementDefinition stmtDef,
+ final PrefixToModule prefixes) {
this.writer = writer;
this.stmtDef = stmtDef;
this.prefixes = prefixes;
+ initCounters();
+ }
+
+ private void initCounters() {
+ counters.clear();
+ counters.push(new Counter());
}
@Override
- public void enterStatement(YangStatementParser.StatementContext ctx) {
- boolean action = true;
- for (int i = 0; i < ctx.getChildCount(); i++) {
- ParseTree child = ctx.getChild(i);
- if (child instanceof YangStatementParser.KeywordContext) {
- try {
- QName identifier = new QName(YangConstants.RFC6020_YIN_NAMESPACE,
- ((YangStatementParser.KeywordContext) child).children.get(0).getText());
- if (stmtDef != null && stmtDef.get(identifier) != null && toBeSkipped.isEmpty()) {
- writer.startStatement(identifier, ref);
- } else {
- action = false;
- toBeSkipped.add(((YangStatementParser.KeywordContext) child).children.get(0).getText());
- }
- } catch (SourceException e) {
- LOG.warn(e.getMessage(), e);
- }
- } else if (child instanceof YangStatementParser.ArgumentContext) {
- try {
- if (action)
- writer.argumentValue(
- Utils.stringFromStringContext((YangStatementParser.ArgumentContext) child), ref);
- else
- action = true;
- } catch (SourceException e) {
- LOG.warn(e.getMessage(), e);
- }
- }
+ public void enterStatement(final StatementContext ctx) {
+ final StatementSourceReference ref = DeclarationInTextSource.atPosition(sourceName, ctx
+ .getStart().getLine(), ctx.getStart().getCharPositionInLine());
+ final String keywordTxt = Verify.verifyNotNull(ctx.getChild(KeywordContext.class, 0)).getText();
+ final QName validStatementDefinition = getValidStatementDefinition(prefixes, stmtDef, keywordTxt);
+ final int childId = counters.peek().getAndIncrement();
+ counters.push(new Counter());
+ if (stmtDef == null || validStatementDefinition == null || !toBeSkipped.isEmpty()) {
+ SourceException.throwIf(writer.getPhase() == ModelProcessingPhase.FULL_DECLARATION, ref,
+ "%s is not a YANG statement or use of extension.", keywordTxt);
+ toBeSkipped.add(keywordTxt);
+ return;
}
+
+ final ArgumentContext argumentCtx = ctx.getChild(ArgumentContext.class, 0);
+ final String argument = argumentCtx != null ? Utils.stringFromStringContext(argumentCtx) : null;
+ writer.startStatement(childId, validStatementDefinition, argument, ref);
}
@Override
- public void exitStatement(YangStatementParser.StatementContext ctx) {
- for (int i = 0; i < ctx.getChildCount(); i++) {
- ParseTree child = ctx.getChild(i);
- if (child instanceof YangStatementParser.KeywordContext) {
- try {
- String statementName = ((YangStatementParser.KeywordContext) child).children.get(0).getText();
- QName identifier = new QName(YangConstants.RFC6020_YIN_NAMESPACE, statementName);
- if (stmtDef != null && stmtDef.get(identifier) != null && toBeSkipped.isEmpty()) {
- writer.endStatement(ref);
- }
-
- if (toBeSkipped.contains(statementName)) {
- toBeSkipped.remove(statementName);
- }
- } catch (SourceException e) {
- LOG.warn(e.getMessage(), e);
- }
- }
+ public void exitStatement(final StatementContext ctx) {
+ final StatementSourceReference ref = DeclarationInTextSource.atPosition(
+ sourceName, ctx.getStart().getLine(), ctx.getStart().getCharPositionInLine());
+
+ KeywordContext keyword = ctx.getChild(KeywordContext.class, 0);
+ String statementName = keyword.getText();
+ if (stmtDef != null && getValidStatementDefinition(prefixes, stmtDef, statementName) != null
+ && toBeSkipped.isEmpty()) {
+ writer.endStatement(ref);
+ }
+
+ // No-op if the statement is not on the list
+ toBeSkipped.remove(statementName);
+ counters.pop();
+ }
+
+ /**
+ * Based on identifier read from source and collections of relevant prefixes and statement definitions mappings
+ * provided for actual phase, method resolves and returns valid QName for declared statement to be written.
+ * This applies to any declared statement, including unknown statements.
+ *
+ * @param prefixes collection of all relevant prefix mappings supplied for actual parsing phase
+ * @param stmtDef collection of all relevant statement definition mappings provided for actual parsing phase
+ * @param keywordText statement keyword text to parse from source
+ * @return valid QName for declared statement to be written, or null
+ */
+ private static QName getValidStatementDefinition(final PrefixToModule prefixes,
+ final QNameToStatementDefinition stmtDef, final String keywordText) {
+ final int firstColon = keywordText.indexOf(':');
+ if (firstColon == -1) {
+ final StatementDefinition statementDefinition = stmtDef.get(
+ new QName(YangConstants.RFC6020_YIN_NAMESPACE, keywordText));
+ return statementDefinition != null ? statementDefinition.getStatementName() : null;
+ }
+
+ final int secondColon = keywordText.indexOf(':', firstColon + 1);
+ if (secondColon != -1) {
+ // Malformed string
+ return null;
+ }
+ if (prefixes == null) {
+ // No prefixes to look up from
+ return null;
}
+
+ final String prefix = keywordText.substring(0, firstColon);
+ final QNameModule qNameModule = prefixes.get(prefix);
+ if (qNameModule == null) {
+ // Failed to look the namespace
+ return null;
+ }
+
+ final String localName = keywordText.substring(firstColon + 1);
+ final StatementDefinition foundStmtDef;
+ if (prefixes.isPreLinkageMap()) {
+ foundStmtDef = stmtDef.getByNamespaceAndLocalName(qNameModule.getNamespace(), localName);
+ } else {
+ foundStmtDef = stmtDef.get(QName.create(qNameModule, localName));
+ }
+
+ return foundStmtDef != null ? foundStmtDef.getStatementName() : null;
}
}
Code Review / yangtools.git / blobdiff