Add MySQL DDL table related ast builder

sharding-jdbc-ddl-parser/src/main/java/io/shardingsphere/core/parsing/antler/ast/AbstractParseTreeBuilder.java

+package io.shardingsphere.core.parsing.antler.ast;
+
+import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.CharStreams;
+import org.antlr.v4.runtime.CommonTokenStream;
+import org.antlr.v4.runtime.Lexer;
+import org.antlr.v4.runtime.Parser;
+import org.antlr.v4.runtime.ParserRuleContext;
+import org.antlr.v4.runtime.TokenStream;
+
+public abstract class AbstractParseTreeBuilder implements ParseTreeBuilder {
+
+    @Override
+    public ParserRuleContext parse(final String input) {
+        CharStream stream = CharStreams.fromString(input);
+        Lexer lexer = newLexer(stream);
+        CommonTokenStream tokenStream = new CommonTokenStream(lexer);
+        Parser parser = newParser(tokenStream);
+        return getParserTree(parser);
+    }
+
+    protected abstract Lexer newLexer(final CharStream stream);
+
+    protected abstract Parser newParser(final TokenStream tokenStream);
+
+    protected abstract ParserRuleContext getParserTree(final Parser parser);
+
+}

sharding-jdbc-ddl-parser/src/main/java/io/shardingsphere/core/parsing/antler/ast/ParseTreeBuilder.java

+package io.shardingsphere.core.parsing.antler.ast;
+
+import org.antlr.v4.runtime.ParserRuleContext;
+
+public interface ParseTreeBuilder {
+    ParserRuleContext parse(final String input);
+}

sharding-jdbc-ddl-parser/src/main/java/io/shardingsphere/core/parsing/antler/ast/mysql/MySQLAlterTableParseTreeBuilder.java

+package io.shardingsphere.core.parsing.antler.ast.mysql;
+
+import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.Lexer;
+import org.antlr.v4.runtime.Parser;
+import org.antlr.v4.runtime.ParserRuleContext;
+import org.antlr.v4.runtime.TokenStream;
+
+import io.shardingsphere.core.parsing.antler.ast.AbstractParseTreeBuilder;
+import io.shardingsphere.core.parsing.antler.parser.mysql.MySQLAdvancedAlterTableParser;
+import io.shardingsphere.parser.antlr.mysql.MySQLAlterTableLexer;
+
+public class MySQLAlterTableParseTreeBuilder extends AbstractParseTreeBuilder {
+
+    @Override
+    protected Lexer newLexer(final CharStream stream) {
+        return new MySQLAlterTableLexer(stream);
+    }
+
+    @Override
+    protected Parser newParser(final TokenStream tokenStream) {
+        return new MySQLAdvancedAlterTableParser(tokenStream);
+    }
+
+    @Override
+    protected ParserRuleContext getParserTree(final Parser parser) {
+        MySQLAdvancedAlterTableParser alterTableParser = (MySQLAdvancedAlterTableParser)parser;
+        return alterTableParser.alterTable();
+    }
+
+    
+
+}

sharding-jdbc-ddl-parser/src/main/java/io/shardingsphere/core/parsing/antler/ast/mysql/MySQLCreateTableParseTreeBuilder.java

+package io.shardingsphere.core.parsing.antler.ast.mysql;
+
+import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.Lexer;
+import org.antlr.v4.runtime.Parser;
+import org.antlr.v4.runtime.ParserRuleContext;
+import org.antlr.v4.runtime.TokenStream;
+
+import io.shardingsphere.core.parsing.antler.ast.AbstractParseTreeBuilder;
+import io.shardingsphere.core.parsing.antler.parser.mysql.MySQLAdvancedCreateTableParser;
+import io.shardingsphere.parser.antlr.mysql.MySQLCreateTableLexer;
+
+public class MySQLCreateTableParseTreeBuilder extends AbstractParseTreeBuilder {
+
+    @Override
+    protected Lexer newLexer(final CharStream stream) {
+        return new MySQLCreateTableLexer(stream);
+    }
+
+    @Override
+    protected Parser newParser(final TokenStream tokenStream) {
+        return new MySQLAdvancedCreateTableParser(tokenStream);
+    }
+
+    @Override
+    protected ParserRuleContext getParserTree(final Parser parser) {
+        MySQLAdvancedCreateTableParser createTableParser = (MySQLAdvancedCreateTableParser) parser;
+        return createTableParser.createTable();
+    }
+
+}

sharding-jdbc-ddl-parser/src/main/java/io/shardingsphere/core/parsing/antler/ast/mysql/MySQLDropTableParseTreeBuilder.java

+package io.shardingsphere.core.parsing.antler.ast.mysql;
+
+import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.Lexer;
+import org.antlr.v4.runtime.Parser;
+import org.antlr.v4.runtime.ParserRuleContext;
+import org.antlr.v4.runtime.TokenStream;
+
+import io.shardingsphere.core.parsing.antler.ast.AbstractParseTreeBuilder;
+import io.shardingsphere.core.parsing.antler.parser.mysql.MySQLAdvancedDropTableParser;
+import io.shardingsphere.parser.antlr.mysql.MySQLDropTableLexer;
+
+public class MySQLDropTableParseTreeBuilder extends AbstractParseTreeBuilder {
+
+    @Override
+    protected Lexer newLexer(final CharStream stream) {
+        return new MySQLDropTableLexer(stream);
+    }
+
+    protected Parser newParser(final TokenStream tokenStream) {
+        return new MySQLAdvancedDropTableParser(tokenStream);
+    }
+
+    @Override
+    protected ParserRuleContext getParserTree(final Parser parser) {
+        MySQLAdvancedDropTableParser dropTableParser = (MySQLAdvancedDropTableParser) parser;
+        return dropTableParser.dropTable();
+    }
+
+}

sharding-jdbc-ddl-parser/src/main/java/io/shardingsphere/core/parsing/antler/ast/mysql/MySQLTruncateTableParseTreeBuilder.java

+package io.shardingsphere.core.parsing.antler.ast.mysql;
+
+import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.Lexer;
+import org.antlr.v4.runtime.Parser;
+import org.antlr.v4.runtime.ParserRuleContext;
+import org.antlr.v4.runtime.TokenStream;
+
+import io.shardingsphere.core.parsing.antler.ast.AbstractParseTreeBuilder;
+import io.shardingsphere.core.parsing.antler.parser.mysql.MySQLAdvancedTruncateTableParser;
+import io.shardingsphere.parser.antlr.mysql.MySQLTruncateTableLexer;
+
+public class MySQLTruncateTableParseTreeBuilder extends AbstractParseTreeBuilder {
+
+    @Override
+    protected Lexer newLexer(final CharStream stream) {
+        return new MySQLTruncateTableLexer(stream);
+    }
+
+    @Override
+    protected Parser newParser(final TokenStream tokenStream) {
+        return new MySQLAdvancedTruncateTableParser(tokenStream);
+    }
+
+    @Override
+    protected ParserRuleContext getParserTree(final Parser parser) {
+        MySQLAdvancedTruncateTableParser truncateTableParser = (MySQLAdvancedTruncateTableParser) parser;
+        return truncateTableParser.truncateTable();
+    }
+
+}