/*
    * Themis: Java Project Framework
    * Copyright 2012-2026. Tony Washer
    *
    * Licensed under the Apache License, Version 2.0 (the "License"); you may not
    * use this file except in compliance with the License.  You may obtain a copy
    * of the License at
    *
    *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations under
   * the License.
   */
  package io.github.tonywasher.joceanus.themis.lethe.analysis;
  
  import io.github.tonywasher.joceanus.oceanus.base.OceanusException;
  import io.github.tonywasher.joceanus.themis.lethe.analysis.ThemisAnalysisContainer.ThemisAnalysisAdoptable;
  import io.github.tonywasher.joceanus.themis.lethe.analysis.ThemisAnalysisIf.ThemisIteratorChain;
  import io.github.tonywasher.joceanus.themis.lethe.analysis.ThemisAnalysisStatement.ThemisAnalysisStatementHolder;
  
  import java.util.ArrayDeque;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.Deque;
  import java.util.Iterator;
  import java.util.List;
  
  /**
   * Try construct.
   */
  public class ThemisAnalysisTry
          implements ThemisAnalysisContainer, ThemisAnalysisAdoptable, ThemisAnalysisStatementHolder {
      /**
       * The contents.
       */
      private final Deque<ThemisAnalysisElement> theContents;
  
      /**
       * The catch clause(s).
       */
      private final ThemisAnalysisCatch theCatch;
  
      /**
       * The finally clause.
       */
      private final ThemisAnalysisFinally theFinally;
  
      /**
       * The headers.
       */
      private final ThemisAnalysisStack theHeaders;
  
      /**
       * The fields.
       */
      private final List<ThemisAnalysisField> theFields;
  
      /**
       * The number of lines.
       */
      private final int theNumLines;
  
      /**
       * The dataMap.
       */
      private final ThemisAnalysisDataMap theDataMap;
  
      /**
       * The parent.
       */
      private ThemisAnalysisContainer theParent;
  
      /**
       * Constructor.
       *
       * @param pParser the parser
       * @param pLine   the initial try line
       * @throws OceanusException on error
       */
      ThemisAnalysisTry(final ThemisAnalysisParser pParser,
                        final ThemisAnalysisLine pLine) throws OceanusException {
          /* Access details from parser */
          theParent = pParser.getParent();
          theDataMap = new ThemisAnalysisDataMap(theParent.getDataMap());
  
          /* Create the arrays */
          final Deque<ThemisAnalysisElement> myHeaders = ThemisAnalysisBuilder.parseHeaders(pParser, pLine);
          final Deque<ThemisAnalysisElement> myLines = ThemisAnalysisBuilder.processBody(pParser);
          theNumLines = myHeaders.size() + 1;
  
          /* Look for catch clauses */
          theCatch = (ThemisAnalysisCatch) pParser.processExtra(this, ThemisAnalysisKeyWord.CATCH);
  
          /* Look for finally clauses */
          theFinally = (ThemisAnalysisFinally) pParser.processExtra(this, ThemisAnalysisKeyWord.FINALLY);
  
         /* Create a parser */
         theContents = new ArrayDeque<>();
         final ThemisAnalysisParser myParser = new ThemisAnalysisParser(myLines, theContents, this);
         myParser.processLines();
 
         /* Parse the headers */
         theFields = new ArrayList<>();
         theHeaders = new ThemisAnalysisStack(myHeaders);
     }
 
     @Override
     public Deque<ThemisAnalysisElement> getContents() {
         return theContents;
     }
 
     @Override
     public void postProcessExtras() throws OceanusException {
         /* Process the catch clause if required */
         if (theCatch != null) {
             theCatch.postProcessLines();
         }
 
         /* Process the finally clause if required */
         if (theFinally != null) {
             theFinally.postProcessLines();
         }
 
         /* If the headers are non empty */
         if (!theHeaders.isEmpty()) {
             /* Strip out parentheses and create scanner */
             final ThemisAnalysisStack myResources = theHeaders.extractParentheses();
             final ThemisAnalysisScanner myScanner = new ThemisAnalysisScanner(myResources);
 
             /* Create field for each resource */
             while (myResources.hasLines()) {
                 final Deque<ThemisAnalysisElement> myResource = myScanner.scanForSeparator(ThemisAnalysisChar.SEMICOLON);
                 theFields.add(new ThemisAnalysisField(getDataMap(), new ThemisAnalysisStack(myResource)));
             }
         }
     }
 
     @Override
     public ThemisAnalysisContainer getParent() {
         return theParent;
     }
 
     @Override
     public void setParent(final ThemisAnalysisContainer pParent) {
         theParent = pParent;
         theDataMap.setParent(pParent.getDataMap());
         if (theCatch != null) {
             theCatch.setParent(pParent);
         }
         if (theFinally != null) {
             theFinally.setParent(pParent);
         }
     }
 
     @Override
     public ThemisAnalysisDataMap getDataMap() {
         return theDataMap;
     }
 
     /**
      * Obtain the additional catch clause (if any).
      *
      * @return the catch clause
      */
     public ThemisAnalysisCatch getCatch() {
         return theCatch;
     }
 
     /**
      * Obtain the additional finally clause (if any).
      *
      * @return the finally clause
      */
     public ThemisAnalysisFinally getFinally() {
         return theFinally;
     }
 
     @Override
     public int getNumLines() {
         return theNumLines;
     }
 
     @Override
     public Iterator<ThemisAnalysisStatement> statementIterator() {
         return ThemisAnalysisField.statementIteratorForFields(theFields);
     }
 
     @Override
     public Iterator<ThemisAnalysisContainer> containerIterator() {
         final Iterator<ThemisAnalysisContainer> myCatch = theCatch == null
                 ? Collections.emptyIterator()
                 : Collections.singleton((ThemisAnalysisContainer) theCatch).iterator();
         final Iterator<ThemisAnalysisContainer> myFinally = theFinally == null
                 ? Collections.emptyIterator()
                 : Collections.singleton((ThemisAnalysisContainer) theFinally).iterator();
         return new ThemisIteratorChain<>(myCatch, myFinally);
     }
 
     @Override
     public String toString() {
         /* Start parameters */
         final StringBuilder myBuilder = new StringBuilder();
 
         /* Build parameters */
         boolean bFirst = true;
         for (ThemisAnalysisField myField : theFields) {
             /* Handle separators */
             if (!bFirst) {
                 myBuilder.append(ThemisAnalysisChar.LF);
             } else {
                 bFirst = false;
             }
 
             /* Add parameter */
             myBuilder.append(myField);
         }
 
         /* Return the string */
         return myBuilder.toString();
     }
 }