/*
 * Units of Measurement Reference Implementation
 * Copyright (c) 2005-2018, Jean-Marie Dautelle, Werner Keil, Otavio Santana.
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions
 *    and the following disclaimer in the documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of JSR-385, Indriya nor the names of their contributors may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
/* Generated By:JavaCC: Do not edit this line. LocalUnitFormatParser.java */
package tech.units.indriya.internal.format;

import static tech.units.indriya.internal.format.UnitTokenConstants.*;

import javax.measure.Prefix;
import javax.measure.Unit;

import tech.units.indriya.AbstractUnit;
import tech.units.indriya.format.SymbolMap;
import tech.units.indriya.function.LogConverter;
import tech.units.indriya.function.MultiplyConverter;

/**
 * @deprecated use {@link UnitFormatParser} FIXME there are some details e.g. Exception handling that are different, try to resolve or keep LUFP
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
public final class LocalUnitFormatParser {

  private SymbolMap symbols;

  /** Generated Token Manager. */
  public UnitTokenManager tokenSource;

  private DefaultCharStream inputStream;

  /** Current token. */
  public Token token;

  /** Next token. */
  public Token nextToken;

  private int nextTokenIndex;

  private Token scanpos, lastpos;

  private int laInt;

  private int genInt;

  final private int[] laA = new int[19];

  static private int[] laB;
  
  private static class Exponent {
    public final int pow;
    public final int root;

    public Exponent(int pow, int root) {
      this.pow = pow;
      this.root = root;
    }
  }

  
  public LocalUnitFormatParser(SymbolMap symbols, java.io.Reader in) {
    this(in);
    this.symbols = symbols;
  }

  final public Unit parseUnit() throws TokenException {
    Unit result = compoundExpr();
    consumeToken(0);
    {
      return result;
    }
  }

  final public Unit compoundExpr() throws TokenException {
    throw new UnsupportedOperationException("Compound units not supported");
  }

  final public Unit addExpr() throws TokenException {
    Unit result = AbstractUnit.ONE;
    Number n1 = null;
    Token sign1 = null;
    Number n2 = null;
    Token sign2 = null;
    if (jj_2_1(2147483647)) {
      n1 = numberExpr();
      sign1 = sign();
    } else {
    }
    result = mulExpr();
    switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
      case PLUS:
      case MINUS:
        sign2 = sign();
        n2 = numberExpr();
        break;
      default:
        laA[1] = genInt;
    }
    if (n1 != null) {
      if (sign1.image.equals("-")) {
        result = result.multiply(-1);
      }
      result = result.shift(n1.doubleValue());
    }
    if (n2 != null) {
      double offset = n2.doubleValue();
      if (sign2.image.equals("-")) {
        offset = -offset;
      }
      result = result.shift(offset);
    }
    {
      return result;
    }
  }

  final public Unit mulExpr() throws TokenException {
    Unit result = AbstractUnit.ONE;
    Unit temp = AbstractUnit.ONE;
    result = exponentExpr();
    label_2: while (true) {
      switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
        case ASTERISK:
        case MIDDLE_DOT:
        case SOLIDUS:
          break;
        default:
          laA[2] = genInt;
          break label_2;
      }
      switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
        case ASTERISK:
        case MIDDLE_DOT:
          switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
            case ASTERISK:
              consumeToken(ASTERISK);
              break;
            case MIDDLE_DOT:
              consumeToken(MIDDLE_DOT);
              break;
            default:
              laA[3] = genInt;
              consumeToken(-1);
              throw new TokenException();
          }
          temp = exponentExpr();
          result = result.multiply(temp);
          break;
        case SOLIDUS:
          consumeToken(SOLIDUS);
          temp = exponentExpr();
          result = result.divide(temp);
          break;
        default:
          laA[4] = genInt;
          consumeToken(-1);
          throw new TokenException();
      }
    }
    {
      return result;
    }
  }

  final public Unit exponentExpr() throws TokenException {
    Unit result = AbstractUnit.ONE;
    Exponent exponent = null;
    Token token = null;
    if (jj_2_2(2147483647)) {
      switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
        case INTEGER:
          token = consumeToken(INTEGER);
          break;
        case E:
          token = consumeToken(E);
          break;
        default:
          laA[5] = genInt;
          consumeToken(-1);
          throw new TokenException();
      }
      consumeToken(CARET);
      result = atomicExpr();
      double base;
      if (token.kind == INTEGER) {
        base = Integer.parseInt(token.image);
      } else {
        base = StrictMath.E;
      }
      {
        return result.transform(new LogConverter(base).inverse());
      }
    } else {
      switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
        case OPEN_PAREN:
        case INTEGER:
        case FLOATING_POINT:
        case UNIT_IDENTIFIER:
          result = atomicExpr();
          switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
            case CARET:
            case SUPERSCRIPT_INTEGER:
              exponent = exp();
              break;
            default:
              laA[6] = genInt;
          }
          if (exponent != null) {
            if (exponent.pow != 1) {
              result = result.pow(exponent.pow);
            }
            if (exponent.root != 1) {
              result = result.root(exponent.root);
            }
          }
          {
            return result;
          }
        case LOG:
        case NAT_LOG:
          switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
            case LOG:
              consumeToken(LOG);
              switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
                case INTEGER:
                  token = consumeToken(INTEGER);
                  break;
                default:
                  laA[7] = genInt;
              }
              break;
            case NAT_LOG:
              token = consumeToken(NAT_LOG);
              break;
            default:
              laA[8] = genInt;
              consumeToken(-1);
              throw new TokenException();
          }
          consumeToken(OPEN_PAREN);
          result = addExpr();
          consumeToken(CLOSE_PAREN);
          double base = 10;
          if (token != null) {
            if (token.kind == INTEGER) {
              base = Integer.parseInt(token.image);
            } else if (token.kind == NAT_LOG) {
              base = StrictMath.E;
            }
          }
          {
            return result.transform(new LogConverter(base));
          }
        default:
          laA[9] = genInt;
          consumeToken(-1);
          throw new TokenException();
      }
    }
  }

  final public Unit atomicExpr() throws TokenException {
    Unit result = AbstractUnit.ONE;
    Number n = null;
    Token token = null;
    switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
      case INTEGER:
      case FLOATING_POINT:
        n = numberExpr();
        if (n instanceof Integer) {
          {
            return result.multiply(n.intValue());
          }
        } else {
          {
            return result.multiply(n.doubleValue());
          }
        }
      case UNIT_IDENTIFIER:
        token = consumeToken(UNIT_IDENTIFIER);
        Unit unit = symbols.getUnit(token.image);
        if (unit == null) {
          Prefix prefix = symbols.getPrefix(token.image);
          if (prefix != null) {
            String prefixSymbol = symbols.getSymbol(prefix);
            unit = symbols.getUnit(token.image.substring(prefixSymbol.length()));
            if (unit != null) {
              {
                return unit.transform(MultiplyConverter.of(prefix));
              }
            }
          }
          {
            throw new TokenException();
          }
        } else {
          {
            return unit;
          }
        }
      case OPEN_PAREN:
        consumeToken(OPEN_PAREN);
        result = addExpr();
        consumeToken(CLOSE_PAREN);
        {
          return result;
        }
      default:
        laA[10] = genInt;
        consumeToken(-1);
        throw new TokenException();
    }
  }

  final public Token sign() throws TokenException {
    Token result = null;
    switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
      case PLUS:
        result = consumeToken(PLUS);
        break;
      case MINUS:
        result = consumeToken(MINUS);
        break;
      default:
        laA[11] = genInt;
        consumeToken(-1);
        throw new TokenException();
    }
    {
      return result;
    }
  }

  final public Number numberExpr() throws TokenException {
    Token token = null;
    switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
      case INTEGER:
        token = consumeToken(INTEGER);
        {
          return Long.valueOf(token.image);
        }
      case FLOATING_POINT:
        token = consumeToken(FLOATING_POINT);
        {
          return Double.valueOf(token.image);
        }
      default:
        laA[12] = genInt;
        consumeToken(-1);
        throw new TokenException();
    }
  }

  final public Exponent exp() throws TokenException {
    Token powSign = null;
    Token powToken = null;
    Token rootSign = null;
    Token rootToken = null;
    switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
      case CARET:
        consumeToken(CARET);
        switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
          case PLUS:
          case MINUS:
          case INTEGER:
            switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
              case PLUS:
              case MINUS:
                powSign = sign();
                break;
              default:
                laA[13] = genInt;
            }
            powToken = consumeToken(INTEGER);
            int pow = Integer.parseInt(powToken.image);
            if ((powSign != null) && powSign.image.equals("-")) {
              pow = -pow;
            }
            {
              return new Exponent(pow, 1);
            }
          case OPEN_PAREN:
            consumeToken(OPEN_PAREN);
            switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
              case PLUS:
              case MINUS:
                powSign = sign();
                break;
              default:
                laA[14] = genInt;
            }
            powToken = consumeToken(INTEGER);
            switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
              case SOLIDUS:
                consumeToken(SOLIDUS);
                switch ((nextTokenIndex == -1) ? jj_ntk() : nextTokenIndex) {
                  case PLUS:
                  case MINUS:
                    rootSign = sign();
                    break;
                  default:
                    laA[15] = genInt;
                }
                rootToken = consumeToken(INTEGER);
                break;
              default:
                laA[16] = genInt;
            }
            consumeToken(CLOSE_PAREN);
            pow = Integer.parseInt(powToken.image);
            if ((powSign != null) && powSign.image.equals("-")) {
              pow = -pow;
            }
            int root = 1;
            if (rootToken != null) {
              root = Integer.parseInt(rootToken.image);
              if ((rootSign != null) && rootSign.image.equals("-")) {
                root = -root;
              }
            }
            {
              return new Exponent(pow, root);
            }
          default:
            laA[17] = genInt;
            consumeToken(-1);
            throw new TokenException();
        }
      case SUPERSCRIPT_INTEGER:
        powToken = consumeToken(SUPERSCRIPT_INTEGER);
        int pow = 0;
        for (int i = 0; i < powToken.image.length(); i += 1) {
          pow *= 10;
          switch (powToken.image.charAt(i)) {
            case '\u00b9':
              pow += 1;
              break;
            case '\u00b2':
              pow += 2;
              break;
            case '\u00b3':
              pow += 3;
              break;
            case '\u2074':
              pow += 4;
              break;
            case '\u2075':
              pow += 5;
              break;
            case '\u2076':
              pow += 6;
              break;
            case '\u2077':
              pow += 7;
              break;
            case '\u2078':
              pow += 8;
              break;
            case '\u2079':
              pow += 9;
              break;
          }
        }
        {
          return new Exponent(pow, 1);
        }
      default:
        laA[18] = genInt;
        consumeToken(-1);
        throw new TokenException();
    }
  }

  private boolean jj_2_1(int xla) {
    laInt = xla;
    lastpos = scanpos = token;
    try {
      return !jj_3_1();
    } catch (LookaheadSuccess ls) {
      return true;
    } finally {
      jj_save(0, xla);
    }
  }

  private boolean jj_2_2(int xla) {
    laInt = xla;
    lastpos = scanpos = token;
    try {
      return !jj_3_2();
    } catch (LookaheadSuccess ls) {
      return true;
    } finally {
      jj_save(1, xla);
    }
  }

  private boolean jj_3R_3() {
    Token xsp;
    xsp = scanpos;
    if (jj_3R_5()) {
      scanpos = xsp;
      if (jj_3R_6())
        return true;
    }
    return false;
  }

  private boolean jj_3R_6() {
    return scanToken(FLOATING_POINT);
  }

  private boolean jj_3_2() {
    Token xsp;
    xsp = scanpos;
    if (scanToken(14)) {
      scanpos = xsp;
      if (scanToken(19))
        return true;
    }
    return scanToken(CARET);
  }

  private boolean jj_3_1() {
    return jj_3R_3() || jj_3R_4();
  }

  private boolean jj_3R_4() {
    Token xsp;
    xsp = scanpos;
    if (scanToken(5)) {
      scanpos = xsp;
      if (scanToken(6))
        return true;
    }
    return false;
  }

  private boolean jj_3R_5() {
    return scanToken(INTEGER);
  }

  static {
    init();
  }

  private static void init() {
    laB = new int[] { 0x800, 0x60, 0x380, 0x180, 0x380, 0x84000, 0x8400, 0x4000, 0x60000, 0x175000, 0x115000, 0x60, 0x14000, 0x60, 0x60, 0x60, 0x200,
        0x5060, 0x8400, };
  }

  final private JJCalls[] rtns = new JJCalls[2];

  private boolean rescan = false;

  private int gcInt = 0;

  /** Constructor with InputStream. */
  public LocalUnitFormatParser(java.io.InputStream stream) {
    this(stream, null);
  }

  /** Constructor with InputStream and supplied encoding */
  public LocalUnitFormatParser(java.io.InputStream stream, String encoding) {
    try {
      inputStream = new DefaultCharStream(stream, encoding, 1, 1);
    } catch (java.io.UnsupportedEncodingException e) {
      throw new RuntimeException(e);
    }
    tokenSource = new UnitTokenManager(inputStream);
    token = new Token();
    nextTokenIndex = -1;
    genInt = 0;
    for (int i = 0; i < 19; i++) {
      laA[i] = -1;
    }
    for (int i = 0; i < rtns.length; i++) {
      rtns[i] = new JJCalls();
    }
  }

  /** Reinitialise. */
  public void reInit(java.io.InputStream stream) {
    reInit(stream, null);
  }

  /** Reinitialise. */
  public void reInit(java.io.InputStream stream, String encoding) {
    try {
      inputStream.reInit(stream, encoding, 1, 1);
    } catch (java.io.UnsupportedEncodingException e) {
      throw new RuntimeException(e);
    }
    tokenSource.reInit(inputStream);
    token = new Token();
    nextTokenIndex = -1;
    genInt = 0;
    for (int i = 0; i < 19; i++) {
      laA[i] = -1;
    }
    for (int i = 0; i < rtns.length; i++) {
      rtns[i] = new JJCalls();
    }
  }

  /** Constructor. */
  public LocalUnitFormatParser(java.io.Reader stream) {
    inputStream = new DefaultCharStream(stream, 1, 1);
    tokenSource = new UnitTokenManager(inputStream);
    token = new Token();
    nextTokenIndex = -1;
    genInt = 0;
    for (int i = 0; i < 19; i++) {
      laA[i] = -1;
    }
    for (int i = 0; i < rtns.length; i++) {
      rtns[i] = new JJCalls();
    }
  }

  /** Reinitialise. */
  public void reInit(java.io.Reader stream) {
    inputStream.reInit(stream, 1, 1);
    tokenSource.reInit(inputStream);
    token = new Token();
    nextTokenIndex = -1;
    genInt = 0;
    for (int i = 0; i < 19; i++) {
      laA[i] = -1;
    }
    for (int i = 0; i < rtns.length; i++) {
      rtns[i] = new JJCalls();
    }
  }

  /** Constructor with generated Token Manager. */
  public LocalUnitFormatParser(UnitTokenManager tm) {
    tokenSource = tm;
    token = new Token();
    nextTokenIndex = -1;
    genInt = 0;
    for (int i = 0; i < 19; i++) {
      laA[i] = -1;
    }
    for (int i = 0; i < rtns.length; i++) {
      rtns[i] = new JJCalls();
    }
  }

  /** Reinitialise. */
  public void reInit(UnitTokenManager tm) {
    tokenSource = tm;
    token = new Token();
    nextTokenIndex = -1;
    genInt = 0;
    for (int i = 0; i < 19; i++) {
      laA[i] = -1;
    }
    for (int i = 0; i < rtns.length; i++) {
      rtns[i] = new JJCalls();
    }
  }

  private Token consumeToken(int kind) throws TokenException {
    Token oldToken;
    if ((oldToken = token).next != null)
      token = token.next;
    else
      token = token.next = tokenSource.getNextToken();
    nextTokenIndex = -1;
    if (token.kind == kind) {
      genInt++;
      if (++gcInt > 100) {
        gcInt = 0;
        for (JJCalls jj_2_rtn : rtns) {
          JJCalls c = jj_2_rtn;
          while (c != null) {
            if (c.gen < genInt)
              c.first = null;
            c = c.next;
          }
        }
      }
      return token;
    }
    token = oldToken;
    this.kind = kind;
    throw raiseTokenException();
  }

  static private final class LookaheadSuccess extends java.lang.RuntimeException {
    private static final long serialVersionUID = 2205332054119123041L;
  }

  private boolean scanToken(int kind) {
    if (scanpos == lastpos) {
      laInt--;
      if (scanpos.next == null) {
        lastpos = scanpos = scanpos.next = tokenSource.getNextToken();
      } else {
        lastpos = scanpos = scanpos.next;
      }
    } else {
      scanpos = scanpos.next;
    }
    if (rescan) {
      int i = 0;
      Token tok = token;
      while (tok != null && tok != scanpos) {
        i++;
        tok = tok.next;
      }
      if (tok != null)
        jj_add_error_token(kind, i);
    }
    if (scanpos.kind != kind)
      return true;
    if (laInt == 0 && scanpos == lastpos)
      throw new LookaheadSuccess();
    return false;
  }

  /** Get the next Token. */
  final public Token getNextToken() {
    if (token.next != null)
      token = token.next;
    else
      token = token.next = tokenSource.getNextToken();
    nextTokenIndex = -1;
    genInt++;
    return token;
  }

  /** Get the specific Token. */
  final public Token getToken(int index) {
    Token t = token;
    for (int i = 0; i < index; i++) {
      if (t.next != null)
        t = t.next;
      else
        t = t.next = tokenSource.getNextToken();
    }
    return t;
  }

  private int jj_ntk() {
    if ((nextToken = token.next) == null) {
      return (nextTokenIndex = (token.next = tokenSource.getNextToken()).kind);
    } else {
      return (nextTokenIndex = nextToken.kind);
    }
  }

  private final java.util.List<int[]> expentries = new java.util.ArrayList<>();

  private int[] expentry;

  private int kind = -1;

  private final int[] lastTokens = new int[100];

  private int endpos;

  private void jj_add_error_token(int kind, int pos) {
    if (pos >= 100)
      return;
    if (pos == endpos + 1) {
      lastTokens[endpos++] = kind;
    } else if (endpos != 0) {
      expentry = new int[endpos];
      System.arraycopy(lastTokens, 0, expentry, 0, endpos);
      entriesLoop: for (int[] jj_expentry1 : expentries) {
        if (jj_expentry1.length == expentry.length) {
          for (int i = 0; i < expentry.length; i++) {
            if (jj_expentry1[i] != expentry[i]) {
              continue entriesLoop;
            }
          }
          expentries.add(expentry);
          break;
        }
      }
      if (pos != 0)
        lastTokens[(endpos = pos) - 1] = kind;
    }
  }

  /** Generate TokenException. */
  TokenException raiseTokenException() {
    expentries.clear();
    boolean[] la1tokens = new boolean[21];
    if (kind >= 0) {
      la1tokens[kind] = true;
      kind = -1;
    }
    for (int i = 0; i < 19; i++) {
      if (laA[i] == genInt) {
        for (int j = 0; j < 32; j++) {
          if ((laB[i] & (1 << j)) != 0) {
            la1tokens[j] = true;
          }
        }
      }
    }
    for (int i = 0; i < 21; i++) {
      if (la1tokens[i]) {
        expentry = new int[1];
        expentry[0] = i;
        expentries.add(expentry);
      }
    }
    endpos = 0;
    jj_rescan_token();
    jj_add_error_token(0, 0);
    int[][] exptokseq = new int[expentries.size()][];
    for (int i = 0; i < expentries.size(); i++) {
      exptokseq[i] = expentries.get(i);
    }
    return new TokenException(token, exptokseq, tokenImage);
  }

  /** Enable tracing. */
  final public void enableTracing() {
  }

  /** Disable tracing. */
  final public void disableTracing() {
  }

  private void jj_rescan_token() {
    rescan = true;
    for (int i = 0; i < 2; i++) {
      try {
        JJCalls p = rtns[i];
        do {
          if (p.gen > genInt) {
            laInt = p.arg;
            lastpos = scanpos = p.first;
            switch (i) {
              case 0:
                jj_3_1();
                break;
              case 1:
                jj_3_2();
                break;
            }
          }
          p = p.next;
        } while (p != null);
      } catch (LookaheadSuccess ls) {
      }
    }
    rescan = false;
  }

  private void jj_save(int index, int xla) {
    JJCalls p = rtns[index];
    while (p.gen > genInt) {
      if (p.next == null) {
        p = p.next = new JJCalls();
        break;
      }
      p = p.next;
    }
    p.gen = genInt + xla - laInt;
    p.first = token;
    p.arg = xla;
  }

  static final class JJCalls {

    int gen;

    Token first;

    int arg;

    JJCalls next;

  }
}