yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/impl/YangStatementParserListenerImpl.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.yangtools.yang.parser.impl;
   9
  10 import java.util.ArrayList;
  11 import java.util.List;
  12 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  13 import org.opendaylight.yangtools.yang.parser.spi.source.DeclarationInTextSource;
  14 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.TypeUtils;
  15 import org.slf4j.Logger;
  16 import org.slf4j.LoggerFactory;
  17 import org.antlr.v4.runtime.tree.ParseTree;
  18 import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParser;
  19 import org.opendaylight.yangtools.antlrv4.code.gen.YangStatementParserBaseListener;
  20 import org.opendaylight.yangtools.yang.common.QName;
  21 import org.opendaylight.yangtools.yang.common.YangConstants;
  22 import org.opendaylight.yangtools.yang.parser.spi.source.PrefixToModule;
  23 import org.opendaylight.yangtools.yang.parser.spi.source.QNameToStatementDefinition;
  24 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  25 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
  26 import org.opendaylight.yangtools.yang.parser.spi.source.StatementWriter;
  27 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.Utils;
  28 import org.opendaylight.yangtools.yang.model.api.Rfc6020Mapping;
  29
  30 import javax.annotation.concurrent.Immutable;
  31
  32 @Immutable
  33 public class YangStatementParserListenerImpl extends YangStatementParserBaseListener {
  34
  35     private StatementWriter writer;
  36     private String sourceName;
  37     private QNameToStatementDefinition stmtDef;
  38     private PrefixToModule prefixes;
  39     private List<String> toBeSkipped = new ArrayList<>();
  40     private boolean isType = false;
  41     private static final Logger LOG = LoggerFactory.getLogger(YangStatementParserListenerImpl.class);
  42
  43     public YangStatementParserListenerImpl(String sourceName) {
  44         this.sourceName = sourceName;
  45     }
  46
  47     public void setAttributes(StatementWriter writer, QNameToStatementDefinition stmtDef) {
  48         this.writer = writer;
  49         this.stmtDef = stmtDef;
  50     }
  51
  52     public void setAttributes(StatementWriter writer, QNameToStatementDefinition stmtDef, PrefixToModule prefixes) {
  53         this.writer = writer;
  54         this.stmtDef = stmtDef;
  55         this.prefixes = prefixes;
  56     }
  57
  58     @Override
  59     public void enterStatement(YangStatementParser.StatementContext ctx) {
  60         final StatementSourceReference ref = DeclarationInTextSource.atPosition(sourceName, ctx
  61                 .getStart().getLine(), ctx.getStart().getCharPositionInLine());
  62         boolean action = true;
  63         QName identifier;
  64         for (int i = 0; i < ctx.getChildCount(); i++) {
  65             ParseTree child = ctx.getChild(i);
  66             if (child instanceof YangStatementParser.KeywordContext) {
  67                 try {
  68                     identifier = new QName(YangConstants.RFC6020_YIN_NAMESPACE,
  69                             ((YangStatementParser.KeywordContext) child).children.get(0).getText());
  70                     if (stmtDef != null && Utils.isValidStatementDefinition(prefixes, stmtDef, identifier) && toBeSkipped.isEmpty()) {
  71                         if (identifier.equals(Rfc6020Mapping.TYPE.getStatementName())) {
  72                             isType = true;
  73                         } else {
  74                             writer.startStatement(identifier, ref);
  75                         }
  76                     } else {
  77                         if (writer.getPhase().equals(ModelProcessingPhase.FULL_DECLARATION)) {
  78                             throw new IllegalArgumentException(identifier.getLocalName() + " is not a YANG statement " +
  79                                     "or use of extension. Source: " + ref);
  80                         } else {
  81                             action = false;
  82                             toBeSkipped.add(((YangStatementParser.KeywordContext) child).children.get(0).getText());
  83                         }
  84                     }
  85                 } catch (SourceException e) {
  86                     LOG.warn(e.getMessage(), e);
  87                 }
  88             } else if (child instanceof YangStatementParser.ArgumentContext) {
  89                 try {
  90                     final String argument = Utils.stringFromStringContext((YangStatementParser.ArgumentContext) child);
  91                     if (isType) {
  92                             if (TypeUtils.isYangTypeBodyStmtString(argument)) {
  93                                 writer.startStatement(new QName(YangConstants.RFC6020_YIN_NAMESPACE, argument), ref);
  94                             } else {
  95                                 writer.startStatement(new QName(YangConstants.RFC6020_YIN_NAMESPACE, Rfc6020Mapping
  96                                         .TYPE.getStatementName().getLocalName()), ref);
  97                             }
  98                         writer.argumentValue(argument, ref);
  99                         isType = false;
 100                     } else if (action) {
 101                         writer.argumentValue(Utils.stringFromStringContext((YangStatementParser.ArgumentContext) child), ref);
 102                     } else {
 103                         action = true;
 104                     }
 105                 } catch (SourceException e) {
 106                     LOG.warn(e.getMessage(), e);
 107                 }
 108             }
 109
 110         }
 111     }
 112
 113     @Override
 114     public void exitStatement(YangStatementParser.StatementContext ctx) {
 115         final StatementSourceReference ref = DeclarationInTextSource.atPosition(sourceName, ctx.getStart().getLine(), ctx
 116                 .getStart().getCharPositionInLine());
 117         for (int i = 0; i < ctx.getChildCount(); i++) {
 118             ParseTree child = ctx.getChild(i);
 119             if (child instanceof YangStatementParser.KeywordContext) {
 120                 try {
 121                     String statementName = ((YangStatementParser.KeywordContext) child).children.get(0).getText();
 122                     QName identifier = new QName(YangConstants.RFC6020_YIN_NAMESPACE, statementName);
 123                     if (stmtDef != null && Utils.isValidStatementDefinition(prefixes, stmtDef, identifier) && toBeSkipped.isEmpty()) {
 124                         writer.endStatement(ref);
 125                     }
 126
 127                     if (toBeSkipped.contains(statementName)) {
 128                         toBeSkipped.remove(statementName);
 129                     }
 130                 } catch (SourceException e) {
 131                     LOG.warn(e.getMessage(), e);
 132                 }
 133             }
 134         }
 135     }
 136 }