package com.chenyang.druid.sql.dialect.mysql.parser;

import com.chenyang.druid.DbType;
import com.chenyang.druid.sql.ast.SQLAnnIndex;
import com.chenyang.druid.sql.ast.SQLArrayDataType;
import com.chenyang.druid.sql.ast.SQLCurrentTimeExpr;
import com.chenyang.druid.sql.ast.SQLCurrentUserExpr;
import com.chenyang.druid.sql.ast.SQLDataType;
import com.chenyang.druid.sql.ast.SQLDataTypeImpl;
import com.chenyang.druid.sql.ast.SQLExpr;
import com.chenyang.druid.sql.ast.SQLName;
import com.chenyang.druid.sql.ast.SQLOrderBy;
import com.chenyang.druid.sql.ast.SQLOrderingSpecification;
import com.chenyang.druid.sql.ast.SQLPartition;
import com.chenyang.druid.sql.ast.SQLPartitionValue;
import com.chenyang.druid.sql.ast.SQLSubPartition;
import com.chenyang.druid.sql.ast.expr.SQLAggregateExpr;
import com.chenyang.druid.sql.ast.expr.SQLArrayExpr;
import com.chenyang.druid.sql.ast.expr.SQLBinaryOpExpr;
import com.chenyang.druid.sql.ast.expr.SQLBinaryOperator;
import com.chenyang.druid.sql.ast.expr.SQLCharExpr;
import com.chenyang.druid.sql.ast.expr.SQLExtractExpr;
import com.chenyang.druid.sql.ast.expr.SQLHexExpr;
import com.chenyang.druid.sql.ast.expr.SQLIdentifierExpr;
import com.chenyang.druid.sql.ast.expr.SQLIntegerExpr;
import com.chenyang.druid.sql.ast.expr.SQLIntervalExpr;
import com.chenyang.druid.sql.ast.expr.SQLIntervalUnit;
import com.chenyang.druid.sql.ast.expr.SQLListExpr;
import com.chenyang.druid.sql.ast.expr.SQLMethodInvokeExpr;
import com.chenyang.druid.sql.ast.expr.SQLQueryExpr;
import com.chenyang.druid.sql.ast.expr.SQLUnaryExpr;
import com.chenyang.druid.sql.ast.expr.SQLUnaryOperator;
import com.chenyang.druid.sql.ast.expr.SQLVariantRefExpr;
import com.chenyang.druid.sql.ast.statement.SQLAssignItem;
import com.chenyang.druid.sql.ast.statement.SQLColumnDefinition;
import com.chenyang.druid.sql.ast.statement.SQLDDLStatement;
import com.chenyang.druid.sql.ast.statement.SQLForeignKeyImpl;
import com.chenyang.druid.sql.ast.statement.SQLSelect;
import com.chenyang.druid.sql.ast.statement.SQLValuesQuery;
import com.chenyang.druid.sql.dialect.mysql.ast.MySqlPrimaryKey;
import com.chenyang.druid.sql.dialect.mysql.ast.MySqlUnique;
import com.chenyang.druid.sql.dialect.mysql.ast.MysqlForeignKey;
import com.chenyang.druid.sql.dialect.mysql.ast.expr.MySqlCharExpr;
import com.chenyang.druid.sql.dialect.mysql.ast.expr.MySqlJSONTableExpr;
import com.chenyang.druid.sql.dialect.mysql.ast.expr.MySqlOrderingExpr;
import com.chenyang.druid.sql.dialect.mysql.ast.expr.MySqlOutFileExpr;
import com.chenyang.druid.sql.dialect.mysql.ast.expr.MySqlUserName;
import com.chenyang.druid.sql.dialect.mysql.ast.statement.MySqlCreateTableStatement;
import com.chenyang.druid.sql.parser.Lexer;
import com.chenyang.druid.sql.parser.ParserException;
import com.chenyang.druid.sql.parser.SQLExprParser;
import com.chenyang.druid.sql.parser.SQLParserFeature;
import com.chenyang.druid.sql.parser.SQLSelectParser;
import com.chenyang.druid.sql.parser.Token;
import com.chenyang.druid.util.FnvHash;
import com.chenyang.druid.util.MySqlUtils;
import java.util.Arrays;
import java.util.List;

public class MySqlExprParser extends SQLExprParser {
   public static final String[] AGGREGATE_FUNCTIONS;
   public static final long[] AGGREGATE_FUNCTIONS_CODES;
   public static final String[] SINGLE_WORD_TABLE_OPTIONS;
   public static final long[] SINGLE_WORD_TABLE_OPTIONS_CODES;

   public MySqlExprParser(Lexer lexer) {
      super(lexer, DbType.mysql);
      this.aggregateFunctions = AGGREGATE_FUNCTIONS;
      this.aggregateFunctionHashCodes = AGGREGATE_FUNCTIONS_CODES;
   }

   public MySqlExprParser(String sql) {
      this((Lexer)(new MySqlLexer(sql)));
      this.lexer.nextToken();
   }

   public MySqlExprParser(String sql, SQLParserFeature... features) {
      super(new MySqlLexer(sql, features), DbType.mysql);
      this.aggregateFunctions = AGGREGATE_FUNCTIONS;
      this.aggregateFunctionHashCodes = AGGREGATE_FUNCTIONS_CODES;
      if (sql.length() > 6) {
         char c0 = sql.charAt(0);
         char c1 = sql.charAt(1);
         char c2 = sql.charAt(2);
         char c3 = sql.charAt(3);
         char c4 = sql.charAt(4);
         char c5 = sql.charAt(5);
         char c6 = sql.charAt(6);
         if (c0 == 'S' && c1 == 'E' && c2 == 'L' && c3 == 'E' && c4 == 'C' && c5 == 'T' && c6 == ' ') {
            this.lexer.reset(6, ' ', Token.SELECT);
            return;
         }

         if (c0 == 's' && c1 == 'e' && c2 == 'l' && c3 == 'e' && c4 == 'c' && c5 == 't' && c6 == ' ') {
            this.lexer.reset(6, ' ', Token.SELECT);
            return;
         }

         if (c0 == 'I' && c1 == 'N' && c2 == 'S' && c3 == 'E' && c4 == 'R' && c5 == 'T' && c6 == ' ') {
            this.lexer.reset(6, ' ', Token.INSERT);
            return;
         }

         if (c0 == 'i' && c1 == 'n' && c2 == 's' && c3 == 'e' && c4 == 'r' && c5 == 't' && c6 == ' ') {
            this.lexer.reset(6, ' ', Token.INSERT);
            return;
         }

         if (c0 == 'U' && c1 == 'P' && c2 == 'D' && c3 == 'A' && c4 == 'T' && c5 == 'E' && c6 == ' ') {
            this.lexer.reset(6, ' ', Token.UPDATE);
            return;
         }

         if (c0 == 'u' && c1 == 'p' && c2 == 'd' && c3 == 'a' && c4 == 't' && c5 == 'e' && c6 == ' ') {
            this.lexer.reset(6, ' ', Token.UPDATE);
            return;
         }

         if (c0 == '/' && c1 == '*' && this.isEnabled(SQLParserFeature.OptimizedForParameterized) && !this.isEnabled(SQLParserFeature.TDDLHint)) {
            MySqlLexer mySqlLexer = (MySqlLexer)this.lexer;
            mySqlLexer.skipFirstHintsOrMultiCommentAndNextToken();
            return;
         }
      }

      this.lexer.nextToken();
   }

   public MySqlExprParser(String sql, boolean keepComments) {
      this((Lexer)(new MySqlLexer(sql, true, keepComments)));
      this.lexer.nextToken();
   }

   public MySqlExprParser(String sql, boolean skipComment, boolean keepComments) {
      this((Lexer)(new MySqlLexer(sql, skipComment, keepComments)));
      this.lexer.nextToken();
   }

   public SQLExpr primary() {
      Token tok = this.lexer.token();
      switch (tok) {
         case IDENTIFIER:
            long hash_lower = this.lexer.hash_lower();
            Lexer.SavePoint savePoint = this.lexer.mark();
            if (hash_lower == FnvHash.Constants.OUTLINE) {
               this.lexer.nextToken();

               try {
                  SQLExpr file = this.primary();
                  SQLExpr expr = new MySqlOutFileExpr(file);
                  return this.primaryRest(expr);
               } catch (ParserException var12) {
                  this.lexer.reset(savePoint);
               }
            }

            String strVal = this.lexer.stringVal();
            boolean quoteStart = strVal.length() > 0 && (strVal.charAt(0) == '`' || strVal.charAt(0) == '"');
            if (!quoteStart) {
               this.setAllowIdentifierMethod(true);
            }

            SQLCurrentTimeExpr currentTimeExpr = null;
            if (hash_lower == FnvHash.Constants.CURRENT_TIME && !quoteStart) {
               currentTimeExpr = new SQLCurrentTimeExpr(SQLCurrentTimeExpr.Type.CURRENT_TIME);
            } else if (hash_lower == FnvHash.Constants.CURRENT_TIMESTAMP && !quoteStart) {
               currentTimeExpr = new SQLCurrentTimeExpr(SQLCurrentTimeExpr.Type.CURRENT_TIMESTAMP);
            } else if (hash_lower == FnvHash.Constants.CURRENT_DATE && !quoteStart) {
               currentTimeExpr = new SQLCurrentTimeExpr(SQLCurrentTimeExpr.Type.CURRENT_DATE);
            } else if (hash_lower == FnvHash.Constants.CURDATE && !quoteStart) {
               currentTimeExpr = new SQLCurrentTimeExpr(SQLCurrentTimeExpr.Type.CURDATE);
            } else if (hash_lower == FnvHash.Constants.LOCALTIME && !quoteStart) {
               currentTimeExpr = new SQLCurrentTimeExpr(SQLCurrentTimeExpr.Type.LOCALTIME);
            } else if (hash_lower == FnvHash.Constants.LOCALTIMESTAMP && !quoteStart) {
               currentTimeExpr = new SQLCurrentTimeExpr(SQLCurrentTimeExpr.Type.LOCALTIMESTAMP);
            } else if (hash_lower == FnvHash.Constants.JSON_TABLE) {
               if (this.lexer.identifierEquals("JSON_TABLE")) {
                  this.lexer.nextToken();
                  this.accept(Token.LPAREN);
                  MySqlJSONTableExpr jsonTable = new MySqlJSONTableExpr();
                  jsonTable.setExpr(this.expr());
                  this.accept(Token.COMMA);
                  jsonTable.setPath(this.expr());
                  this.acceptIdentifier("COLUMNS");
                  this.accept(Token.LPAREN);

                  while(this.lexer.token() != Token.RPAREN) {
                     jsonTable.addColumn(this.parseJsonTableColumn());
                     if (this.lexer.token() != Token.COMMA) {
                        break;
                     }

                     this.lexer.nextToken();
                  }

                  this.accept(Token.RPAREN);
                  this.accept(Token.RPAREN);
                  return jsonTable;
               }
            } else {
               if (hash_lower == FnvHash.Constants._LATIN1 && !quoteStart) {
                  this.lexer.nextToken();
                  String hexString;
                  if (this.lexer.identifierEquals(FnvHash.Constants.X)) {
                     this.lexer.nextToken();
                     hexString = this.lexer.stringVal();
                     this.lexer.nextToken();
                  } else if (this.lexer.token() == Token.LITERAL_CHARS) {
                     hexString = null;
                  } else {
                     hexString = this.lexer.hexString();
                     this.lexer.nextToken();
                  }

                  SQLExpr charExpr;
                  if (hexString == null) {
                     String str = this.lexer.stringVal();
                     this.lexer.nextToken();
                     String collate = null;
                     if (this.lexer.identifierEquals(FnvHash.Constants.COLLATE)) {
                        this.lexer.nextToken();
                        collate = this.lexer.stringVal();
                        if (this.lexer.token() == Token.LITERAL_CHARS) {
                           this.lexer.nextToken();
                        } else {
                           this.accept(Token.IDENTIFIER);
                        }
                     }

                     charExpr = new MySqlCharExpr(str, "_latin1", collate);
                  } else {
                     charExpr = new MySqlCharExpr(hexString, "_latin1");
                  }

                  return this.primaryRest(charExpr);
               }

               if ((hash_lower == FnvHash.Constants._UTF8 || hash_lower == FnvHash.Constants._UTF8MB4) && !quoteStart) {
                  this.lexer.nextToken();
                  String hexString;
                  if (this.lexer.identifierEquals(FnvHash.Constants.X)) {
                     this.lexer.nextToken();
                     hexString = this.lexer.stringVal();
                     this.lexer.nextToken();
                  } else if (this.lexer.token() == Token.LITERAL_CHARS) {
                     hexString = null;
                  } else {
                     hexString = this.lexer.hexString();
                     this.lexer.nextToken();
                  }

                  SQLExpr charExpr;
                  if (hexString == null) {
                     String str = this.lexer.stringVal();
                     this.lexer.nextToken();
                     String collate = null;
                     if (this.lexer.identifierEquals(FnvHash.Constants.COLLATE)) {
                        this.lexer.nextToken();
                        collate = this.lexer.stringVal();
                        if (this.lexer.token() == Token.LITERAL_CHARS) {
                           this.lexer.nextToken();
                        } else {
                           this.accept(Token.IDENTIFIER);
                        }
                     }

                     charExpr = new MySqlCharExpr(str, "_utf8", collate);
                  } else {
                     String str = MySqlUtils.utf8(hexString);
                     charExpr = new SQLCharExpr(str);
                  }

                  return this.primaryRest(charExpr);
               }

               if ((hash_lower == FnvHash.Constants._UTF16 || hash_lower == FnvHash.Constants._UCS2) && !quoteStart) {
                  this.lexer.nextToken();
                  String hexString;
                  if (this.lexer.identifierEquals(FnvHash.Constants.X)) {
                     this.lexer.nextToken();
                     hexString = this.lexer.stringVal();
                     this.lexer.nextToken();
                  } else if (this.lexer.token() == Token.LITERAL_CHARS) {
                     hexString = null;
                  } else {
                     hexString = this.lexer.hexString();
                     this.lexer.nextToken();
                  }

                  SQLCharExpr charExpr;
                  if (hexString == null) {
                     String str = this.lexer.stringVal();
                     this.lexer.nextToken();
                     charExpr = new MySqlCharExpr(str, "_utf16");
                  } else {
                     charExpr = new SQLCharExpr(MySqlUtils.utf16(hexString));
                  }

                  return this.primaryRest(charExpr);
               }

               if (hash_lower == FnvHash.Constants._UTF16LE && !quoteStart) {
                  this.lexer.nextToken();
                  String hexString;
                  if (this.lexer.identifierEquals(FnvHash.Constants.X)) {
                     this.lexer.nextToken();
                     hexString = this.lexer.stringVal();
                     this.lexer.nextToken();
                  } else if (this.lexer.token() == Token.LITERAL_CHARS) {
                     hexString = null;
                  } else {
                     hexString = this.lexer.hexString();
                     this.lexer.nextToken();
                  }

                  SQLCharExpr charExpr;
                  if (hexString == null) {
                     String str = this.lexer.stringVal();
                     this.lexer.nextToken();
                     charExpr = new MySqlCharExpr(str, "_utf16le");
                  } else {
                     charExpr = new MySqlCharExpr(hexString, "_utf16le");
                  }

                  return this.primaryRest(charExpr);
               }

               if (hash_lower == FnvHash.Constants._UTF32 && !quoteStart) {
                  this.lexer.nextToken();
                  String hexString;
                  if (this.lexer.identifierEquals(FnvHash.Constants.X)) {
                     this.lexer.nextToken();
                     hexString = this.lexer.stringVal();
                     this.lexer.nextToken();
                  } else if (this.lexer.token() == Token.LITERAL_CHARS) {
                     hexString = null;
                  } else {
                     hexString = this.lexer.hexString();
                     this.lexer.nextToken();
                  }

                  SQLCharExpr charExpr;
                  if (hexString == null) {
                     String str = this.lexer.stringVal();
                     this.lexer.nextToken();
                     charExpr = new MySqlCharExpr(str, "_utf32");
                  } else {
                     charExpr = new SQLCharExpr(MySqlUtils.utf32(hexString));
                  }

                  return this.primaryRest(charExpr);
               }

               if (hash_lower == FnvHash.Constants._GBK && !quoteStart) {
                  this.lexer.nextToken();
                  String hexString;
                  if (this.lexer.identifierEquals(FnvHash.Constants.X)) {
                     this.lexer.nextToken();
                     hexString = this.lexer.stringVal();
                     this.lexer.nextToken();
                  } else if (this.lexer.token() == Token.LITERAL_CHARS) {
                     hexString = null;
                  } else {
                     hexString = this.lexer.hexString();
                     this.lexer.nextToken();
                  }

                  SQLCharExpr charExpr;
                  if (hexString == null) {
                     String str = this.lexer.stringVal();
                     this.lexer.nextToken();
                     charExpr = new MySqlCharExpr(str, "_gbk");
                  } else {
                     charExpr = new SQLCharExpr(MySqlUtils.gbk(hexString));
                  }

                  return this.primaryRest(charExpr);
               }

               if (hash_lower == FnvHash.Constants._UJIS && !quoteStart) {
                  this.lexer.nextToken();
                  String hexString;
                  if (this.lexer.identifierEquals(FnvHash.Constants.X)) {
                     this.lexer.nextToken();
                     hexString = this.lexer.stringVal();
                     this.lexer.nextToken();
                  } else if (this.lexer.token() == Token.LITERAL_CHARS) {
                     hexString = null;
                  } else {
                     hexString = this.lexer.hexString();
                     this.lexer.nextToken();
                  }

                  SQLCharExpr charExpr;
                  if (hexString == null) {
                     String str = this.lexer.stringVal();
                     this.lexer.nextToken();
                     charExpr = new MySqlCharExpr(str, "_ujis");
                  } else {
                     charExpr = new MySqlCharExpr(hexString, "_ujis");
                  }

                  return this.primaryRest(charExpr);
               }

               if (hash_lower == FnvHash.Constants._BIG5 && !quoteStart) {
                  this.lexer.nextToken();
                  String hexString;
                  if (this.lexer.identifierEquals(FnvHash.Constants.X)) {
                     this.lexer.nextToken();
                     hexString = this.lexer.stringVal();
                     this.lexer.nextToken();
                  } else if (this.lexer.token() == Token.LITERAL_CHARS) {
                     hexString = null;
                  } else {
                     hexString = this.lexer.hexString();
                     this.lexer.nextToken();
                  }

                  SQLCharExpr charExpr;
                  if (hexString == null) {
                     String str = this.lexer.stringVal();
                     this.lexer.nextToken();
                     charExpr = new MySqlCharExpr(str, "_big5");
                  } else {
                     charExpr = new SQLCharExpr(MySqlUtils.big5(hexString));
                  }

                  return this.primaryRest(charExpr);
               }

               if (hash_lower == FnvHash.Constants.CURRENT_USER && this.isEnabled(SQLParserFeature.EnableCurrentUserExpr)) {
                  this.lexer.nextToken();
                  return this.primaryRest(new SQLCurrentUserExpr());
               }

               if (hash_lower == -5808529385363204345L && this.lexer.charAt(this.lexer.pos()) == '\'') {
                  this.lexer.nextToken();
                  SQLHexExpr hex = new SQLHexExpr(this.lexer.stringVal());
                  this.lexer.nextToken();
                  return this.primaryRest(hex);
               }
            }

            if (currentTimeExpr != null) {
               String methodName = this.lexer.stringVal();
               this.lexer.nextToken();
               if (this.lexer.token() == Token.LPAREN) {
                  this.lexer.nextToken();
                  if (this.lexer.token() != Token.LPAREN) {
                     return this.primaryRest(this.methodRest(new SQLIdentifierExpr(methodName), false));
                  }

                  this.lexer.nextToken();
               }

               return this.primaryRest(currentTimeExpr);
            } else {
               return super.primary();
            }
         case VARIANT:
            SQLVariantRefExpr varRefExpr = new SQLVariantRefExpr(this.lexer.stringVal());
            this.lexer.nextToken();
            if (varRefExpr.getName().equalsIgnoreCase("@@global")) {
               this.accept(Token.DOT);
               varRefExpr = new SQLVariantRefExpr(this.lexer.stringVal(), true);
               this.lexer.nextToken();
            } else if (varRefExpr.getName().equals("@") && this.lexer.token() == Token.LITERAL_CHARS) {
               varRefExpr.setName("@'" + this.lexer.stringVal() + "'");
               this.lexer.nextToken();
            } else if (varRefExpr.getName().equals("@@") && this.lexer.token() == Token.LITERAL_CHARS) {
               varRefExpr.setName("@@'" + this.lexer.stringVal() + "'");
               this.lexer.nextToken();
            }

            return this.primaryRest(varRefExpr);
         case VALUES:
            this.lexer.nextToken();
            if (this.lexer.token() != Token.LPAREN) {
               SQLExpr expr = this.primary();
               SQLValuesQuery values = new SQLValuesQuery();
               values.addValue(new SQLListExpr(new SQLExpr[]{expr}));
               return new SQLQueryExpr(new SQLSelect(values));
            }

            return this.methodRest(new SQLIdentifierExpr("VALUES"), true);
         case BINARY:
            this.lexer.nextToken();
            if (this.lexer.token() != Token.COMMA && this.lexer.token() != Token.SEMI && this.lexer.token() != Token.EOF) {
               SQLUnaryExpr binaryExpr = new SQLUnaryExpr(SQLUnaryOperator.BINARY, this.primary());
               return this.primaryRest(binaryExpr);
            }

            return new SQLIdentifierExpr("BINARY");
         case TABLE:
            SQLQueryExpr queryExpr = new SQLQueryExpr(this.createSelectParser().select());
            return this.primaryRest(queryExpr);
         default:
            return super.primary();
      }
   }

   protected MySqlJSONTableExpr.Column parseJsonTableColumn() {
      MySqlJSONTableExpr.Column column = new MySqlJSONTableExpr.Column();
      SQLName name = this.name();
      column.setName(name);
      if (this.lexer.token() == Token.FOR) {
         this.lexer.nextToken();
         this.acceptIdentifier("ORDINALITY");
      } else {
         boolean nested = name instanceof SQLIdentifierExpr && name.nameHashCode64() == FnvHash.Constants.NESTED;
         if (!nested) {
            column.setDataType(this.parseDataType());
         }

         if (this.lexer.token() == Token.EXISTS) {
            this.lexer.nextToken();
            column.setExists(true);
         }

         if (this.lexer.identifierEquals(FnvHash.Constants.PATH)) {
            this.lexer.nextToken();
            column.setPath(this.primary());
         }

         if (name instanceof SQLIdentifierExpr && name.nameHashCode64() == FnvHash.Constants.NESTED) {
            this.acceptIdentifier("COLUMNS");
            this.accept(Token.LPAREN);

            while(this.lexer.token() != Token.RPAREN) {
               MySqlJSONTableExpr.Column nestedColumn = this.parseJsonTableColumn();
               column.addNestedColumn(nestedColumn);
               if (this.lexer.token() != Token.COMMA) {
                  break;
               }

               this.lexer.nextToken();
            }

            this.accept(Token.RPAREN);
         }

         for(int i = 0; i < 2; ++i) {
            if (this.lexer.identifierEquals("ERROR") || this.lexer.token() == Token.DEFAULT || this.lexer.token() == Token.NULL) {
               if (this.lexer.token() == Token.DEFAULT) {
                  this.lexer.nextToken();
               }

               SQLExpr expr = this.expr();
               this.accept(Token.ON);
               if (this.lexer.identifierEquals("ERROR")) {
                  this.lexer.nextToken();
                  column.setOnError(expr);
               } else {
                  this.acceptIdentifier("EMPTY");
                  column.setOnEmpty(expr);
               }
            }
         }
      }

      return column;
   }

   public final SQLExpr primaryRest(SQLExpr expr) {
      if (expr == null) {
         throw new IllegalArgumentException("expr");
      } else {
         if (this.lexer.token() == Token.LITERAL_CHARS) {
            if (expr instanceof SQLIdentifierExpr) {
               SQLIdentifierExpr identExpr = (SQLIdentifierExpr)expr;
               String ident = identExpr.getName();
               if (ident.equalsIgnoreCase("x")) {
                  char ch = this.lexer.charAt(this.lexer.pos());
                  if (ch == '\'') {
                     String charValue = this.lexer.stringVal();
                     this.lexer.nextToken();
                     expr = new SQLHexExpr(charValue);
                     return this.primaryRest(expr);
                  }
               } else if (ident.startsWith("_")) {
                  String charValue = this.lexer.stringVal();
                  this.lexer.nextToken();
                  MySqlCharExpr mysqlCharExpr = new MySqlCharExpr(charValue);
                  mysqlCharExpr.setCharset(identExpr.getName());
                  if (this.lexer.identifierEquals(FnvHash.Constants.COLLATE)) {
                     this.lexer.nextToken();
                     String collate = this.lexer.stringVal();
                     mysqlCharExpr.setCollate(collate);
                     if (this.lexer.token() == Token.LITERAL_CHARS) {
                        this.lexer.nextToken();
                     } else {
                        this.accept(Token.IDENTIFIER);
                     }
                  }

                  return this.primaryRest(mysqlCharExpr);
               }
            } else if (expr instanceof SQLCharExpr) {
               String text2 = ((SQLCharExpr)expr).getText();

               do {
                  String chars = this.lexer.stringVal();
                  text2 = text2 + chars;
                  this.lexer.nextToken();
               } while(this.lexer.token() == Token.LITERAL_CHARS || this.lexer.token() == Token.LITERAL_ALIAS);

               expr = new SQLCharExpr(text2);
            } else if (expr instanceof SQLVariantRefExpr) {
               SQLMethodInvokeExpr concat = new SQLMethodInvokeExpr("CONCAT");
               concat.addArgument(expr);
               concat.addArgument(this.primary());
               return this.primaryRest(concat);
            }
         } else if (this.lexer.token() == Token.IDENTIFIER) {
            if (expr instanceof SQLHexExpr) {
               if ("USING".equalsIgnoreCase(this.lexer.stringVal())) {
                  this.lexer.nextToken();
                  if (this.lexer.token() != Token.IDENTIFIER) {
                     throw new ParserException("syntax error, illegal hex. " + this.lexer.info());
                  }

                  String charSet = this.lexer.stringVal();
                  this.lexer.nextToken();
                  expr.getAttributes().put("USING", charSet);
                  return this.primaryRest(expr);
               }
            } else {
               if (this.lexer.identifierEquals(FnvHash.Constants.COLLATE)) {
                  this.lexer.nextToken();
                  if (this.lexer.token() == Token.EQ) {
                     this.lexer.nextToken();
                  }

                  if (this.lexer.token() != Token.IDENTIFIER && this.lexer.token() != Token.LITERAL_CHARS) {
                     throw new ParserException("syntax error. " + this.lexer.info());
                  }

                  String collate = this.lexer.stringVal();
                  this.lexer.nextToken();
                  SQLBinaryOpExpr binaryExpr = new SQLBinaryOpExpr(expr, SQLBinaryOperator.COLLATE, new SQLIdentifierExpr(collate), DbType.mysql);
                  return this.primaryRest(binaryExpr);
               }

               if (expr instanceof SQLVariantRefExpr && this.lexer.identifierEquals(FnvHash.Constants.COLLATE)) {
                  this.lexer.nextToken();
                  if (this.lexer.token() != Token.IDENTIFIER && this.lexer.token() != Token.LITERAL_CHARS) {
                     throw new ParserException("syntax error. " + this.lexer.info());
                  }

                  String collate = this.lexer.stringVal();
                  this.lexer.nextToken();
                  expr.putAttribute("COLLATE", collate);
                  return this.primaryRest(expr);
               }
            }
         } else if (this.lexer.token() == Token.LBRACKET) {
            SQLArrayExpr array = new SQLArrayExpr();
            array.setExpr(expr);
            this.lexer.nextToken();
            this.exprList(array.getValues(), array);
            this.accept(Token.RBRACKET);
            return this.primaryRest(array);
         }

         if (this.lexer.token() == Token.VARIANT) {
            String variant = this.lexer.stringVal();
            if ("@".equals(variant)) {
               return this.userNameRest(expr);
            } else if ("@localhost".equals(variant)) {
               return this.userNameRest(expr);
            } else {
               throw new ParserException("syntax error. " + this.lexer.info());
            }
         } else if (this.lexer.token() == Token.ERROR) {
            throw new ParserException("syntax error. " + this.lexer.info());
         } else {
            return super.primaryRest(expr);
         }
      }
   }

   public SQLName userName() {
      SQLName name = this.name();
      if (this.lexer.token() == Token.LPAREN && name.hashCode64() == FnvHash.Constants.CURRENT_USER) {
         this.lexer.nextToken();
         this.accept(Token.RPAREN);
         return name;
      } else {
         return (SQLName)this.userNameRest(name);
      }
   }

   private SQLExpr userNameRest(SQLExpr expr) {
      if (this.lexer.token() == Token.VARIANT && this.lexer.stringVal().startsWith("@")) {
         MySqlUserName userName = new MySqlUserName();
         if (expr instanceof SQLCharExpr) {
            userName.setUserName(((SQLCharExpr)expr).getText());
         } else {
            userName.setUserName(((SQLIdentifierExpr)expr).getName());
         }

         String strVal = this.lexer.stringVal();
         this.lexer.nextToken();
         if (strVal.length() > 1) {
            userName.setHost(strVal.substring(1));
            return userName;
         } else {
            if (this.lexer.token() == Token.LITERAL_CHARS) {
               userName.setHost(this.lexer.stringVal());
            } else {
               if (this.lexer.token() == Token.PERCENT) {
                  throw new ParserException("syntax error. " + this.lexer.info());
               }

               userName.setHost(this.lexer.stringVal());
            }

            this.lexer.nextToken();
            if (this.lexer.identifierEquals(FnvHash.Constants.IDENTIFIED)) {
               Lexer.SavePoint mark = this.lexer.mark();
               this.lexer.nextToken();
               if (this.lexer.token() == Token.BY) {
                  this.lexer.nextToken();
                  if (this.lexer.identifierEquals(FnvHash.Constants.PASSWORD)) {
                     this.lexer.reset(mark);
                  } else {
                     userName.setIdentifiedBy(this.lexer.stringVal());
                     this.lexer.nextToken();
                  }
               } else {
                  this.lexer.reset(mark);
               }
            }

            return userName;
         }
      } else {
         return expr;
      }
   }

   protected SQLExpr parsePosition() {
      SQLExpr expr = this.primary();
      expr = this.primaryRest(expr);
      expr = this.bitXorRest(expr);
      expr = this.additiveRest(expr);
      expr = this.shiftRest(expr);
      expr = this.bitAndRest(expr);
      expr = this.bitOrRest(expr);
      if (this.lexer.token() == Token.IN) {
         this.accept(Token.IN);
      } else {
         if (this.lexer.token() != Token.COMMA) {
            throw new ParserException("syntax error. " + this.lexer.info());
         }

         this.accept(Token.COMMA);
      }

      SQLExpr str = this.expr();
      this.accept(Token.RPAREN);
      SQLMethodInvokeExpr locate = new SQLMethodInvokeExpr("LOCATE");
      locate.addArgument(expr);
      locate.addArgument(str);
      return this.primaryRest(locate);
   }

   protected SQLExpr parseExtract() {
      if (this.lexer.token() != Token.IDENTIFIER) {
         throw new ParserException("syntax error. " + this.lexer.info());
      } else {
         String unitVal = this.lexer.stringVal();
         SQLIntervalUnit unit = SQLIntervalUnit.valueOf(unitVal.toUpperCase());
         this.lexer.nextToken();
         this.accept(Token.FROM);
         SQLExpr value = this.expr();
         SQLExtractExpr extract = new SQLExtractExpr();
         extract.setValue(value);
         extract.setUnit(unit);
         this.accept(Token.RPAREN);
         return this.primaryRest(extract);
      }
   }

   public SQLSelectParser createSelectParser() {
      return new MySqlSelectParser(this);
   }

   protected SQLExpr parseInterval() {
      this.accept(Token.INTERVAL);
      if (this.lexer.token() == Token.LPAREN) {
         this.lexer.nextToken();
         SQLMethodInvokeExpr methodInvokeExpr = new SQLMethodInvokeExpr("INTERVAL");
         if (this.lexer.token() != Token.RPAREN) {
            this.exprList(methodInvokeExpr.getArguments(), methodInvokeExpr);
         }

         this.accept(Token.RPAREN);
         if (methodInvokeExpr.getArguments().size() == 1 && this.lexer.token() == Token.IDENTIFIER) {
            SQLExpr value = (SQLExpr)methodInvokeExpr.getArguments().get(0);
            String unit = this.lexer.stringVal();
            this.lexer.nextToken();
            SQLIntervalExpr intervalExpr = new SQLIntervalExpr();
            intervalExpr.setValue(value);
            intervalExpr.setUnit(SQLIntervalUnit.valueOf(unit.toUpperCase()));
            return intervalExpr;
         } else {
            return this.primaryRest(methodInvokeExpr);
         }
      } else {
         SQLExpr value = this.expr();
         if (this.lexer.token() != Token.IDENTIFIER) {
            throw new ParserException("Syntax error. " + this.lexer.info());
         } else {
            SQLIntervalUnit intervalUnit = null;
            String unit = this.lexer.stringVal();
            long unitHash = this.lexer.hash_lower();
            this.lexer.nextToken();
            intervalUnit = SQLIntervalUnit.valueOf(unit.toUpperCase());
            if (this.lexer.token() == Token.TO) {
               this.lexer.nextToken();
               if (unitHash == FnvHash.Constants.YEAR) {
                  if (!this.lexer.identifierEquals(FnvHash.Constants.MONTH)) {
                     throw new ParserException("Syntax error. " + this.lexer.info());
                  }

                  this.lexer.nextToken();
                  intervalUnit = SQLIntervalUnit.YEAR_MONTH;
               } else if (unitHash == FnvHash.Constants.DAY) {
                  if (this.lexer.identifierEquals(FnvHash.Constants.HOUR)) {
                     this.lexer.nextToken();
                     intervalUnit = SQLIntervalUnit.DAY_HOUR;
                  } else if (this.lexer.identifierEquals(FnvHash.Constants.MINUTE)) {
                     this.lexer.nextToken();
                     intervalUnit = SQLIntervalUnit.DAY_MINUTE;
                  } else if (this.lexer.identifierEquals(FnvHash.Constants.SECOND)) {
                     this.lexer.nextToken();
                     intervalUnit = SQLIntervalUnit.DAY_SECOND;
                  } else {
                     if (!this.lexer.identifierEquals(FnvHash.Constants.MICROSECOND)) {
                        throw new ParserException("Syntax error. " + this.lexer.info());
                     }

                     this.lexer.nextToken();
                     intervalUnit = SQLIntervalUnit.DAY_MICROSECOND;
                  }
               } else if (unitHash == FnvHash.Constants.HOUR) {
                  if (this.lexer.identifierEquals(FnvHash.Constants.MINUTE)) {
                     this.lexer.nextToken();
                     intervalUnit = SQLIntervalUnit.HOUR_MINUTE;
                  } else if (this.lexer.identifierEquals(FnvHash.Constants.SECOND)) {
                     this.lexer.nextToken();
                     intervalUnit = SQLIntervalUnit.HOUR_SECOND;
                  } else {
                     if (!this.lexer.identifierEquals(FnvHash.Constants.MICROSECOND)) {
                        throw new ParserException("Syntax error. " + this.lexer.info());
                     }

                     this.lexer.nextToken();
                     intervalUnit = SQLIntervalUnit.HOUR_MICROSECOND;
                  }
               } else if (unitHash == FnvHash.Constants.MINUTE) {
                  if (this.lexer.identifierEquals(FnvHash.Constants.SECOND)) {
                     this.lexer.nextToken();
                     intervalUnit = SQLIntervalUnit.MINUTE_SECOND;
                  } else {
                     if (!this.lexer.identifierEquals(FnvHash.Constants.MICROSECOND)) {
                        throw new ParserException("Syntax error. " + this.lexer.info());
                     }

                     this.lexer.nextToken();
                     intervalUnit = SQLIntervalUnit.MINUTE_MICROSECOND;
                  }
               } else {
                  if (unitHash != FnvHash.Constants.SECOND) {
                     throw new ParserException("Syntax error. " + this.lexer.info());
                  }

                  if (!this.lexer.identifierEquals(FnvHash.Constants.MICROSECOND)) {
                     throw new ParserException("Syntax error. " + this.lexer.info());
                  }

                  this.lexer.nextToken();
                  intervalUnit = SQLIntervalUnit.SECOND_MICROSECOND;
               }
            }

            SQLIntervalExpr intervalExpr = new SQLIntervalExpr();
            intervalExpr.setValue(value);
            intervalExpr.setUnit(intervalUnit);
            return intervalExpr;
         }
      }
   }

   public SQLColumnDefinition parseColumn() {
      SQLColumnDefinition column = new SQLColumnDefinition();
      column.setDbType(this.dbType);
      SQLName name = this.name();
      column.setName(name);
      column.setDataType(this.parseDataType());
      if (column.getDataType() != null && column.getDataType().jdbcType() == 1 && this.lexer.identifierEquals(FnvHash.Constants.CHARACTER)) {
         this.lexer.nextToken();
         this.accept(Token.SET);
         if (this.lexer.token() != Token.IDENTIFIER && this.lexer.token() != Token.LITERAL_CHARS) {
            throw new ParserException(this.lexer.info());
         }

         column.setCharsetExpr(this.primary());
      }

      while(this.lexer.identifierEquals(FnvHash.Constants.COLLATE)) {
         this.lexer.nextToken();
         SQLExpr collateExpr;
         if (this.lexer.token() == Token.IDENTIFIER) {
            collateExpr = new SQLIdentifierExpr(this.lexer.stringVal());
         } else {
            collateExpr = new SQLCharExpr(this.lexer.stringVal());
         }

         this.lexer.nextToken();
         column.setCollateExpr(collateExpr);
      }

      if (this.lexer.identifierEquals(FnvHash.Constants.GENERATED)) {
         this.lexer.nextToken();
         this.acceptIdentifier("ALWAYS");
         this.accept(Token.AS);
         this.accept(Token.LPAREN);
         SQLExpr expr = this.expr();
         this.accept(Token.RPAREN);
         column.setGeneratedAlawsAs(expr);
      }

      return this.parseColumnRest(column);
   }

   public SQLColumnDefinition parseColumnRest(SQLColumnDefinition column) {
      if (this.lexer.token() == Token.ON) {
         this.lexer.nextToken();
         this.accept(Token.UPDATE);
         SQLExpr expr = this.primary();
         column.setOnUpdate(expr);
      }

      if (this.lexer.identifierEquals(FnvHash.Constants.ENCODE)) {
         this.lexer.nextToken();
         this.accept(Token.EQ);
         column.setEncode(this.charExpr());
      }

      if (this.lexer.identifierEquals(FnvHash.Constants.COMPRESSION)) {
         this.lexer.nextToken();
         this.accept(Token.EQ);
         column.setCompression(this.charExpr());
      }

      if (!this.lexer.identifierEquals(FnvHash.Constants.CHARACTER) && !this.lexer.identifierEquals(FnvHash.Constants.CHARSET)) {
         if (this.lexer.identifierEquals("disableindex")) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.TRUE) {
               this.lexer.nextToken();
               column.setDisableIndex(true);
            }

            return this.parseColumnRest(column);
         } else if (this.lexer.identifierEquals("jsonIndexAttrs")) {
            this.lexer.nextToken();
            column.setJsonIndexAttrsExpr(new SQLIdentifierExpr(this.lexer.stringVal()));
            this.lexer.nextToken();
            return this.parseColumnRest(column);
         } else if (this.lexer.identifierEquals("precision")) {
            this.lexer.nextToken();
            int precision = this.parseIntValue();
            this.acceptIdentifier("scale");
            int scale = this.parseIntValue();
            List<SQLExpr> arguments = column.getDataType().getArguments();
            arguments.add(new SQLIntegerExpr(precision));
            arguments.add(new SQLIntegerExpr(scale));
            return this.parseColumnRest(column);
         } else if (this.lexer.identifierEquals(FnvHash.Constants.COLLATE)) {
            this.lexer.nextToken();
            SQLExpr collateExpr;
            if (this.lexer.token() == Token.IDENTIFIER) {
               collateExpr = new SQLIdentifierExpr(this.lexer.stringVal());
            } else {
               collateExpr = new SQLCharExpr(this.lexer.stringVal());
            }

            this.lexer.nextToken();
            column.setCollateExpr(collateExpr);
            return this.parseColumnRest(column);
         } else {
            if (this.lexer.identifierEquals(FnvHash.Constants.VISIBLE)) {
               this.lexer.nextToken();
               column.setVisible(true);
            }

            if (this.lexer.identifierEquals(FnvHash.Constants.INVISIBLE)) {
               this.lexer.nextToken();
               column.setInvisible(true);
            }

            if (this.lexer.identifierEquals(FnvHash.Constants.PRECISION) && column.getDataType().nameHashCode64() == FnvHash.Constants.DOUBLE) {
               this.lexer.nextToken();
            }

            if (this.lexer.identifierEquals("COLUMN_FORMAT")) {
               this.lexer.nextToken();
               SQLExpr expr = this.expr();
               column.setFormat(expr);
            }

            if (this.lexer.identifierEquals(FnvHash.Constants.STORAGE)) {
               this.lexer.nextToken();
               SQLExpr expr = this.expr();
               column.setStorage(expr);
            }

            if (this.lexer.token() == Token.AS) {
               this.lexer.nextToken();
               this.accept(Token.LPAREN);
               SQLExpr expr = this.expr();
               column.setAsExpr(expr);
               this.accept(Token.RPAREN);
            }

            if (this.lexer.identifierEquals(FnvHash.Constants.STORED) || this.lexer.identifierEquals("PERSISTENT")) {
               this.lexer.nextToken();
               column.setStored(true);
            }

            if (this.lexer.identifierEquals(FnvHash.Constants.VIRTUAL)) {
               this.lexer.nextToken();
               column.setVirtual(true);
            }

            if (this.lexer.identifierEquals(FnvHash.Constants.DELIMITER)) {
               this.lexer.nextToken();
               SQLExpr expr = this.expr();
               column.setDelimiter(expr);
               return this.parseColumnRest(column);
            } else if (this.lexer.identifierEquals("delimiter_tokenizer")) {
               this.lexer.nextToken();
               SQLExpr expr = this.expr();
               column.setDelimiterTokenizer(expr);
               return this.parseColumnRest(column);
            } else {
               if (this.lexer.identifierEquals("nlp_tokenizer")) {
                  this.lexer.nextToken();
                  SQLExpr expr = this.expr();
                  column.setNlpTokenizer(expr);
               }

               if (this.lexer.identifierEquals("value_type")) {
                  this.lexer.nextToken();
                  SQLExpr expr = this.expr();
                  column.setValueType(expr);
               }

               if (this.lexer.identifierEquals(FnvHash.Constants.COLPROPERTIES)) {
                  this.lexer.nextToken();
                  this.parseAssignItem(column.getColProperties(), column);
               }

               if (this.lexer.identifierEquals(FnvHash.Constants.ANNINDEX)) {
                  this.lexer.nextToken();
                  this.accept(Token.LPAREN);
                  SQLAnnIndex annIndex = new SQLAnnIndex();

                  while(true) {
                     if (this.lexer.identifierEquals(FnvHash.Constants.TYPE)) {
                        this.lexer.nextToken();
                        this.accept(Token.EQ);
                        String type = this.lexer.stringVal();
                        annIndex.setIndexType(type);
                        this.accept(Token.LITERAL_CHARS);
                     } else if (this.lexer.identifierEquals(FnvHash.Constants.RTTYPE)) {
                        this.lexer.nextToken();
                        this.accept(Token.EQ);
                        String type = this.lexer.stringVal();
                        annIndex.setRtIndexType(type);
                        this.accept(Token.LITERAL_CHARS);
                     } else if (this.lexer.identifierEquals(FnvHash.Constants.DISTANCE)) {
                        this.lexer.nextToken();
                        this.accept(Token.EQ);
                        String type = this.lexer.stringVal();
                        annIndex.setDistance(type);
                        this.accept(Token.LITERAL_CHARS);
                     }

                     if (this.lexer.token() != Token.COMMA) {
                        this.accept(Token.RPAREN);
                        column.setAnnIndex(annIndex);
                        return this.parseColumnRest(column);
                     }

                     this.lexer.nextToken();
                  }
               } else {
                  super.parseColumnRest(column);
                  return column;
               }
            }
         }
      } else {
         if (this.lexer.identifierEquals(FnvHash.Constants.CHARACTER)) {
            this.lexer.nextToken();
            this.accept(Token.SET);
         } else {
            this.lexer.nextToken();
         }

         SQLExpr charSet;
         if (this.lexer.token() == Token.IDENTIFIER) {
            charSet = new SQLIdentifierExpr(this.lexer.stringVal());
         } else {
            charSet = new SQLCharExpr(this.lexer.stringVal());
         }

         this.lexer.nextToken();
         column.setCharsetExpr(charSet);
         return this.parseColumnRest(column);
      }
   }

   protected SQLDataType parseDataTypeRest(SQLDataType dataType) {
      super.parseDataTypeRest(dataType);

      while(true) {
         while(!this.lexer.identifierEquals(FnvHash.Constants.UNSIGNED)) {
            if (!this.lexer.identifierEquals(FnvHash.Constants.ZEROFILL)) {
               if (this.lexer.identifierEquals(FnvHash.Constants.ARRAY)) {
                  this.lexer.nextToken();
                  dataType = new SQLArrayDataType(dataType);
               }

               return dataType;
            }

            this.lexer.nextToken();
            ((SQLDataTypeImpl)dataType).setZerofill(true);
         }

         this.lexer.nextToken();
         ((SQLDataTypeImpl)dataType).setUnsigned(true);
      }
   }

   public SQLAssignItem parseAssignItem(boolean variant) {
      SQLAssignItem item = new SQLAssignItem();
      SQLExpr var = this.primary();
      String ident = null;
      long identHash = 0L;
      if (variant && var instanceof SQLIdentifierExpr) {
         SQLIdentifierExpr identExpr = (SQLIdentifierExpr)var;
         ident = identExpr.getName();
         identHash = identExpr.hashCode64();
         if (identHash == FnvHash.Constants.GLOBAL) {
            ident = this.lexer.stringVal();
            this.lexer.nextToken();
            var = new SQLVariantRefExpr(ident, true);
         } else if (identHash == FnvHash.Constants.SESSION) {
            ident = this.lexer.stringVal();
            this.lexer.nextToken();
            var = new SQLVariantRefExpr(ident, false, true);
         } else {
            var = new SQLVariantRefExpr(ident);
         }
      }

      if (identHash == FnvHash.Constants.NAMES) {
         String charset = this.lexer.stringVal();
         SQLExpr varExpr = null;
         boolean chars = false;
         Token token = this.lexer.token();
         if (token == Token.IDENTIFIER) {
            this.lexer.nextToken();
         } else if (token == Token.DEFAULT) {
            charset = "DEFAULT";
            this.lexer.nextToken();
         } else if (token == Token.QUES) {
            varExpr = new SQLVariantRefExpr("?");
            this.lexer.nextToken();
         } else {
            chars = true;
            this.accept(Token.LITERAL_CHARS);
         }

         if (this.lexer.identifierEquals(FnvHash.Constants.COLLATE)) {
            MySqlCharExpr charsetExpr = new MySqlCharExpr(charset);
            this.lexer.nextToken();
            String collate = this.lexer.stringVal();
            this.lexer.nextToken();
            charsetExpr.setCollate(collate);
            item.setValue(charsetExpr);
         } else if (varExpr != null) {
            item.setValue(varExpr);
         } else {
            item.setValue((SQLExpr)(chars ? new SQLCharExpr(charset) : new SQLIdentifierExpr(charset)));
         }

         item.setTarget(var);
         return item;
      } else {
         if (identHash == FnvHash.Constants.CHARACTER) {
            var = new SQLVariantRefExpr("CHARACTER SET");
            this.accept(Token.SET);
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }
         } else if (identHash == FnvHash.Constants.CHARSET) {
            var = new SQLVariantRefExpr("CHARACTER SET");
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }
         } else if (identHash == FnvHash.Constants.TRANSACTION) {
            var = new SQLVariantRefExpr("TRANSACTION");
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }
         } else if (this.lexer.token() == Token.COLONEQ) {
            this.lexer.nextToken();
         } else {
            this.accept(Token.EQ);
         }

         if (this.lexer.token() == Token.ON) {
            this.lexer.nextToken();
            item.setValue(new SQLIdentifierExpr("ON"));
         } else {
            item.setValue(this.expr());
         }

         item.setTarget(var);
         return item;
      }
   }

   public SQLName nameRest(SQLName name) {
      if (this.lexer.token() == Token.VARIANT && "@".equals(this.lexer.stringVal())) {
         this.lexer.nextToken();
         MySqlUserName userName = new MySqlUserName();
         userName.setUserName(((SQLIdentifierExpr)name).getName());
         if (this.lexer.token() == Token.LITERAL_CHARS) {
            userName.setHost("'" + this.lexer.stringVal() + "'");
         } else {
            userName.setHost(this.lexer.stringVal());
         }

         this.lexer.nextToken();
         if (this.lexer.identifierEquals(FnvHash.Constants.IDENTIFIED)) {
            this.lexer.nextToken();
            this.accept(Token.BY);
            userName.setIdentifiedBy(this.lexer.stringVal());
            this.lexer.nextToken();
         }

         return userName;
      } else {
         return super.nameRest(name);
      }
   }

   public MySqlPrimaryKey parsePrimaryKey() {
      MySqlPrimaryKey primaryKey = new MySqlPrimaryKey();
      this.parseIndex(primaryKey.getIndexDefinition());
      return primaryKey;
   }

   public MySqlUnique parseUnique() {
      MySqlUnique unique = new MySqlUnique();
      this.parseIndex(unique.getIndexDefinition());
      return unique;
   }

   public MysqlForeignKey parseForeignKey() {
      this.accept(Token.FOREIGN);
      this.accept(Token.KEY);
      MysqlForeignKey fk = new MysqlForeignKey();
      if (this.lexer.token() != Token.LPAREN) {
         SQLName indexName = this.name();
         fk.setIndexName(indexName);
      }

      this.accept(Token.LPAREN);
      this.names(fk.getReferencingColumns(), fk);
      this.accept(Token.RPAREN);
      this.accept(Token.REFERENCES);
      fk.setReferencedTableName(this.name());
      this.accept(Token.LPAREN);
      this.names(fk.getReferencedColumns());
      this.accept(Token.RPAREN);
      if (this.lexer.identifierEquals(FnvHash.Constants.MATCH)) {
         this.lexer.nextToken();
         if (!this.lexer.identifierEquals("FULL") && this.lexer.token() != Token.FULL) {
            if (this.lexer.identifierEquals(FnvHash.Constants.PARTIAL)) {
               fk.setReferenceMatch(SQLForeignKeyImpl.Match.PARTIAL);
               this.lexer.nextToken();
            } else {
               if (!this.lexer.identifierEquals(FnvHash.Constants.SIMPLE)) {
                  throw new ParserException("TODO : " + this.lexer.info());
               }

               fk.setReferenceMatch(SQLForeignKeyImpl.Match.SIMPLE);
               this.lexer.nextToken();
            }
         } else {
            fk.setReferenceMatch(SQLForeignKeyImpl.Match.FULL);
            this.lexer.nextToken();
         }
      }

      while(this.lexer.token() == Token.ON) {
         this.lexer.nextToken();
         if (this.lexer.token() == Token.DELETE) {
            this.lexer.nextToken();
            SQLForeignKeyImpl.Option option = this.parseReferenceOption();
            fk.setOnDelete(option);
         } else {
            if (this.lexer.token() != Token.UPDATE) {
               throw new ParserException("syntax error, expect DELETE or UPDATE, actual " + this.lexer.token() + " " + this.lexer.info());
            }

            this.lexer.nextToken();
            SQLForeignKeyImpl.Option option = this.parseReferenceOption();
            fk.setOnUpdate(option);
         }
      }

      return fk;
   }

   protected SQLAggregateExpr parseAggregateExprRest(SQLAggregateExpr aggregateExpr) {
      if (this.lexer.token() == Token.ORDER) {
         SQLOrderBy orderBy = this.parseOrderBy();
         aggregateExpr.setOrderBy(orderBy);
         aggregateExpr.putAttribute("ORDER BY", orderBy);
      }

      if (this.lexer.identifierEquals(FnvHash.Constants.SEPARATOR)) {
         this.lexer.nextToken();
         SQLExpr seperator = this.primary();
         seperator.setParent(aggregateExpr);
         aggregateExpr.putAttribute("SEPARATOR", seperator);
      }

      return aggregateExpr;
   }

   public MySqlOrderingExpr parseSelectGroupByItem() {
      MySqlOrderingExpr item = new MySqlOrderingExpr();
      item.setExpr(this.expr());
      if (this.lexer.token() == Token.ASC) {
         this.lexer.nextToken();
         item.setType(SQLOrderingSpecification.ASC);
      } else if (this.lexer.token() == Token.DESC) {
         this.lexer.nextToken();
         item.setType(SQLOrderingSpecification.DESC);
      }

      return item;
   }

   public SQLSubPartition parseSubPartition() {
      SQLSubPartition subPartition = new SQLSubPartition();
      subPartition.setName(this.name());

      while(true) {
         boolean storage = false;
         if (this.lexer.identifierEquals(FnvHash.Constants.DATA)) {
            this.lexer.nextToken();
            this.acceptIdentifier("DIRECTORY");
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            subPartition.setDataDirectory(this.expr());
         } else if (this.lexer.token() == Token.TABLESPACE) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLName tableSpace = this.name();
            subPartition.setTablespace(tableSpace);
         } else if (this.lexer.token() == Token.INDEX) {
            this.lexer.nextToken();
            this.acceptIdentifier("DIRECTORY");
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            subPartition.setIndexDirectory(this.expr());
         } else if (this.lexer.identifierEquals(FnvHash.Constants.MAX_ROWS)) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLExpr maxRows = this.primary();
            subPartition.setMaxRows(maxRows);
         } else if (this.lexer.identifierEquals(FnvHash.Constants.MIN_ROWS)) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLExpr minRows = this.primary();
            subPartition.setMinRows(minRows);
         } else if (!this.lexer.identifierEquals(FnvHash.Constants.ENGINE) && !(storage = this.lexer.token() == Token.STORAGE || this.lexer.identifierEquals(FnvHash.Constants.STORAGE))) {
            if (this.lexer.token() != Token.COMMENT) {
               return subPartition;
            }

            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLExpr comment = this.primary();
            subPartition.setComment(comment);
         } else {
            if (storage) {
               this.lexer.nextToken();
            }

            this.acceptIdentifier("ENGINE");
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLName engine = this.name();
            subPartition.setEngine(engine);
         }
      }
   }

   public SQLPartition parsePartition() {
      if (!this.lexer.identifierEquals(FnvHash.Constants.DBPARTITION) && !this.lexer.identifierEquals(FnvHash.Constants.TBPARTITION) && !this.lexer.identifierEquals(FnvHash.Constants.SUBPARTITION)) {
         this.accept(Token.PARTITION);
      } else {
         this.lexer.nextToken();
      }

      SQLPartition partitionDef = new SQLPartition();
      partitionDef.setName(this.name());
      SQLPartitionValue values = this.parsePartitionValues();
      if (values != null) {
         partitionDef.setValues(values);
      }

      while(true) {
         boolean storage = false;
         if (this.lexer.identifierEquals(FnvHash.Constants.DATA)) {
            this.lexer.nextToken();
            this.acceptIdentifier("DIRECTORY");
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            partitionDef.setDataDirectory(this.expr());
         } else if (this.lexer.token() == Token.TABLESPACE) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLName tableSpace = this.name();
            partitionDef.setTablespace(tableSpace);
         } else if (this.lexer.token() == Token.INDEX) {
            this.lexer.nextToken();
            this.acceptIdentifier("DIRECTORY");
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            partitionDef.setIndexDirectory(this.expr());
         } else if (this.lexer.identifierEquals(FnvHash.Constants.MAX_ROWS)) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLExpr maxRows = this.primary();
            partitionDef.setMaxRows(maxRows);
         } else if (this.lexer.identifierEquals(FnvHash.Constants.MIN_ROWS)) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLExpr minRows = this.primary();
            partitionDef.setMaxRows(minRows);
         } else if (!this.lexer.identifierEquals(FnvHash.Constants.ENGINE) && !(storage = this.lexer.token() == Token.STORAGE || this.lexer.identifierEquals(FnvHash.Constants.STORAGE))) {
            if (this.lexer.token() != Token.COMMENT) {
               if (this.lexer.token() == Token.LPAREN) {
                  this.lexer.nextToken();

                  while(true) {
                     this.acceptIdentifier("SUBPARTITION");
                     SQLSubPartition subPartition = this.parseSubPartition();
                     partitionDef.addSubPartition(subPartition);
                     if (this.lexer.token() != Token.COMMA) {
                        this.accept(Token.RPAREN);
                        break;
                     }

                     this.lexer.nextToken();
                  }
               }

               return partitionDef;
            }

            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLExpr comment = this.primary();
            partitionDef.setComment(comment);
         } else {
            if (storage) {
               this.lexer.nextToken();
            }

            this.acceptIdentifier("ENGINE");
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLName engine = this.name();
            partitionDef.setEngine(engine);
         }
      }
   }

   protected SQLExpr parseAliasExpr(String alias) {
      if (this.isEnabled(SQLParserFeature.KeepNameQuotes)) {
         return new SQLIdentifierExpr(alias);
      } else {
         Lexer newLexer = new Lexer(alias);
         newLexer.nextTokenValue();
         return new SQLCharExpr(newLexer.stringVal());
      }
   }

   public boolean parseTableOptions(List<SQLAssignItem> assignItems, SQLDDLStatement parent) {
      boolean succeed = false;

      while(this.lexer.token() != Token.EOF) {
         long hash = this.lexer.hash_lower();
         int idx = Arrays.binarySearch(SINGLE_WORD_TABLE_OPTIONS_CODES, hash);
         SQLAssignItem assignItem = null;
         Lexer.SavePoint mark = null;
         if (idx < 0 || idx >= SINGLE_WORD_TABLE_OPTIONS_CODES.length || SINGLE_WORD_TABLE_OPTIONS_CODES[idx] != hash || this.lexer.token() != Token.IDENTIFIER && (this.lexer.token().name == null || this.lexer.token().name.length() != SINGLE_WORD_TABLE_OPTIONS[idx].length())) {
            mark = this.lexer.mark();
            if (this.lexer.token() == Token.DEFAULT) {
               this.lexer.nextToken();
               if (this.lexer.identifierEquals(FnvHash.Constants.CHARACTER)) {
                  this.lexer.nextToken();
                  this.accept(Token.SET);
                  if (this.lexer.token() == Token.EQ) {
                     this.lexer.nextToken();
                  }

                  assignItem = new SQLAssignItem(new SQLIdentifierExpr("CHARACTER SET"), this.expr());
               } else if (this.lexer.identifierEquals(FnvHash.Constants.COLLATE)) {
                  this.lexer.nextToken();
                  if (this.lexer.token() == Token.EQ) {
                     this.lexer.nextToken();
                  }

                  assignItem = new SQLAssignItem(new SQLIdentifierExpr("COLLATE"), this.expr());
               }
            } else if (hash == FnvHash.Constants.CHARACTER) {
               this.lexer.nextToken();
               this.accept(Token.SET);
               if (this.lexer.token() == Token.EQ) {
                  this.lexer.nextToken();
               }

               assignItem = new SQLAssignItem(new SQLIdentifierExpr("CHARACTER SET"), this.expr());
            } else if (hash == FnvHash.Constants.DATA || this.lexer.token() == Token.INDEX) {
               this.lexer.nextToken();
               if (this.lexer.identifierEquals("DIRECTORY")) {
                  this.lexer.nextToken();
                  if (this.lexer.token() == Token.EQ) {
                     this.lexer.nextToken();
                  }

                  assignItem = new SQLAssignItem(new SQLIdentifierExpr("COLLATE"), this.expr());
               }
            }
         } else if (this.lexer.token() == Token.TABLESPACE) {
            this.lexer.nextToken();
            MySqlCreateTableStatement.TableSpaceOption option = new MySqlCreateTableStatement.TableSpaceOption();
            option.setName(this.name());
            if (this.lexer.identifierEquals("STORAGE")) {
               this.lexer.nextToken();
               option.setStorage(this.name());
            }

            assignItem = new SQLAssignItem(new SQLIdentifierExpr("TABLESPACE"), option);
         } else if (this.lexer.token() == Token.UNION) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            this.accept(Token.LPAREN);
            SQLListExpr list = new SQLListExpr();
            this.exprList(list.getItems(), list);
            this.accept(Token.RPAREN);
            assignItem = new SQLAssignItem(new SQLIdentifierExpr("UNION"), list);
         } else if (this.lexer.identifierEquals("PACK_KEYS")) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            if (this.lexer.identifierEquals("PACK")) {
               this.lexer.nextToken();
               this.accept(Token.ALL);
               assignItem = new SQLAssignItem(new SQLIdentifierExpr("PACK_KEYS"), new SQLIdentifierExpr("PACK ALL"));
            } else {
               assignItem = new SQLAssignItem(new SQLIdentifierExpr("PACK_KEYS"), this.expr());
            }
         } else if (this.lexer.identifierEquals(FnvHash.Constants.ENGINE)) {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            SQLExpr expr;
            if (this.lexer.token() == Token.MERGE) {
               expr = new SQLIdentifierExpr(this.lexer.stringVal());
               this.lexer.nextToken();
            } else {
               expr = this.expr();
            }

            assignItem = new SQLAssignItem(new SQLIdentifierExpr("ENGINE"), expr);
         } else {
            this.lexer.nextToken();
            if (this.lexer.token() == Token.EQ) {
               this.lexer.nextToken();
            }

            assignItem = new SQLAssignItem(new SQLIdentifierExpr(SINGLE_WORD_TABLE_OPTIONS[idx]), (SQLExpr)(idx == 11 ? this.charExpr() : this.expr()));
         }

         if (assignItem == null) {
            if (mark != null) {
               this.lexer.reset(mark);
            }

            return succeed;
         }

         assignItem.setParent(parent);
         assignItems.add(assignItem);
         succeed = true;
         if (this.lexer.token() == Token.COMMA) {
            this.lexer.nextToken();
         } else if (this.lexer.token() == Token.EOF) {
            break;
         }
      }

      return succeed;
   }

   static {
      String[] strings = new String[]{"AVG", "ANY_VALUE", "BIT_AND", "BIT_OR", "BIT_XOR", "COUNT", "GROUP_CONCAT", "LISTAGG", "MAX", "MIN", "STD", "STDDEV", "STDDEV_POP", "STDDEV_SAMP", "SUM", "VAR_SAMP", "VARIANCE", "JSON_ARRAYAGG", "JSON_OBJECTAGG"};
      AGGREGATE_FUNCTIONS_CODES = FnvHash.fnv1a_64_lower(strings, true);
      AGGREGATE_FUNCTIONS = new String[AGGREGATE_FUNCTIONS_CODES.length];

      for(String str : strings) {
         long hash = FnvHash.fnv1a_64_lower(str);
         int index = Arrays.binarySearch(AGGREGATE_FUNCTIONS_CODES, hash);
         AGGREGATE_FUNCTIONS[index] = str;
      }

      String[] options = new String[]{"AUTO_INCREMENT", "AVG_ROW_LENGTH", "CHECKSUM", "COLLATE", "COMMENT", "COMPRESSION", "CONNECTION", "DELAY_KEY_WRITE", "ENCRYPTION", "ENGINE", "INSERT_METHOD", "KEY_BLOCK_SIZE", "MAX_ROWS", "MIN_ROWS", "PACK_KEYS", "PASSWORD", "ROW_FORMAT", "STATS_AUTO_RECALC", "STATS_PERSISTENT", "STATS_SAMPLE_PAGES", "TABLESPACE", "UNION", "STORAGE_TYPE", "STORAGE_POLICY", "AUTOEXTEND_SIZE", "ENGINE_ATTRIBUTE", "SECONDARY_ENGINE_ATTRIBUTE"};
      SINGLE_WORD_TABLE_OPTIONS_CODES = FnvHash.fnv1a_64_lower(options, true);
      SINGLE_WORD_TABLE_OPTIONS = new String[SINGLE_WORD_TABLE_OPTIONS_CODES.length];

      for(String str : options) {
         long hash = FnvHash.fnv1a_64_lower(str);
         int index = Arrays.binarySearch(SINGLE_WORD_TABLE_OPTIONS_CODES, hash);
         SINGLE_WORD_TABLE_OPTIONS[index] = str;
      }

   }
}
