This commit is contained in:
xiusiyan
2012-03-18 22:57:34 +08:00
1153 changed files with 145776 additions and 145758 deletions
@@ -1,136 +1,136 @@
/*
* Copyright 1999-2011 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.druid.sql.parser;
public class SQLParser {
protected final Lexer lexer;
public SQLParser(String sql){
this(new Lexer(sql));
this.lexer.nextToken();
}
public SQLParser(Lexer lexer){
this.lexer = lexer;
}
public final Lexer getLexer() {
return lexer;
}
protected boolean identifierEquals(String text) {
return lexer.token() == Token.IDENTIFIER && lexer.stringVal().equalsIgnoreCase(text);
}
protected void acceptIdentifier(String text) {
if (identifierEquals(text)) {
lexer.nextToken();
} else {
setErrorEndPos(lexer.pos());
throw new SQLParseException("syntax error, expect " + text + ", actual " + lexer.token());
}
}
protected String as() throws ParserException {
String alias = null;
if (lexer.token() == Token.AS) {
lexer.nextToken();
if (lexer.token() == Token.LITERAL_ALIAS) {
alias = '"' + lexer.stringVal() + '"';
lexer.nextToken();
return alias;
}
if (lexer.token() == Token.IDENTIFIER) {
alias = lexer.stringVal();
lexer.nextToken();
return alias;
}
if (lexer.token() == Token.LITERAL_CHARS) {
alias = "'" + lexer.stringVal() + "'";
lexer.nextToken();
return alias;
}
if (lexer.token() == Token.YEAR || lexer.token() == Token.DAY || lexer.token() == Token.KEY
|| lexer.token() == Token.CASE || lexer.token() == Token.TIMESTAMP) {
alias = lexer.token.name();
lexer.nextToken();
return alias;
}
switch (lexer.token()) {
case KEY:
alias = lexer.token().name();
lexer.nextToken();
return alias;
default:
break;
}
throw new ParserException("Error : " + lexer.token());
}
if (lexer.token() == Token.LITERAL_ALIAS) {
alias = '"' + lexer.stringVal() + '"';
lexer.nextToken();
} else if (lexer.token() == Token.IDENTIFIER) {
alias = lexer.stringVal();
lexer.nextToken();
} else if (lexer.token() == Token.LITERAL_CHARS) {
alias = "'" + lexer.stringVal() + "'";
lexer.nextToken();
} else if (lexer.token() == Token.YEAR || lexer.token() == Token.DAY || lexer.token() == Token.TIME
|| lexer.token() == Token.MONTH || lexer.token() == Token.CASE || lexer.token() == Token.AT
|| lexer.token() == Token.TIMESTAMP || lexer.token() == Token.LOG) {
alias = lexer.token.name();
lexer.nextToken();
}
switch (lexer.token()) {
case KEY:
alias = lexer.token().name();
lexer.nextToken();
return alias;
default:
break;
}
return alias;
}
public void accept(Token token) {
if (lexer.token() == token) {
lexer.nextToken();
} else {
setErrorEndPos(lexer.pos());
throw new SQLParseException("syntax error, expect " + token + ", actual " + lexer.token() + " "
+ lexer.stringVal());
}
}
private int errorEndPos = -1;
protected void setErrorEndPos(int errPos) {
if (errPos > errorEndPos) {
errorEndPos = errPos;
}
}
}
/*
* Copyright 1999-2011 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.druid.sql.parser;
public class SQLParser {
protected final Lexer lexer;
public SQLParser(String sql){
this(new Lexer(sql));
this.lexer.nextToken();
}
public SQLParser(Lexer lexer){
this.lexer = lexer;
}
public final Lexer getLexer() {
return lexer;
}
protected boolean identifierEquals(String text) {
return lexer.token() == Token.IDENTIFIER && lexer.stringVal().equalsIgnoreCase(text);
}
protected void acceptIdentifier(String text) {
if (identifierEquals(text)) {
lexer.nextToken();
} else {
setErrorEndPos(lexer.pos());
throw new SQLParseException("syntax error, expect " + text + ", actual " + lexer.token());
}
}
protected String as() throws ParserException {
String alias = null;
if (lexer.token() == Token.AS) {
lexer.nextToken();
if (lexer.token() == Token.LITERAL_ALIAS) {
alias = '"' + lexer.stringVal() + '"';
lexer.nextToken();
return alias;
}
if (lexer.token() == Token.IDENTIFIER) {
alias = lexer.stringVal();
lexer.nextToken();
return alias;
}
if (lexer.token() == Token.LITERAL_CHARS) {
alias = "'" + lexer.stringVal() + "'";
lexer.nextToken();
return alias;
}
if (lexer.token() == Token.YEAR || lexer.token() == Token.DAY || lexer.token() == Token.KEY
|| lexer.token() == Token.CASE || lexer.token() == Token.TIMESTAMP) {
alias = lexer.token.name();
lexer.nextToken();
return alias;
}
switch (lexer.token()) {
case KEY:
alias = lexer.token().name();
lexer.nextToken();
return alias;
default:
break;
}
throw new ParserException("Error : " + lexer.token());
}
if (lexer.token() == Token.LITERAL_ALIAS) {
alias = '"' + lexer.stringVal() + '"';
lexer.nextToken();
} else if (lexer.token() == Token.IDENTIFIER) {
alias = lexer.stringVal();
lexer.nextToken();
} else if (lexer.token() == Token.LITERAL_CHARS) {
alias = "'" + lexer.stringVal() + "'";
lexer.nextToken();
} else if (lexer.token() == Token.YEAR || lexer.token() == Token.DAY || lexer.token() == Token.TIME
|| lexer.token() == Token.MONTH || lexer.token() == Token.CASE || lexer.token() == Token.AT
|| lexer.token() == Token.TIMESTAMP || lexer.token() == Token.LOG) {
alias = lexer.token.name();
lexer.nextToken();
}
switch (lexer.token()) {
case KEY:
alias = lexer.token().name();
lexer.nextToken();
return alias;
default:
break;
}
return alias;
}
public void accept(Token token) {
if (lexer.token() == token) {
lexer.nextToken();
} else {
setErrorEndPos(lexer.pos());
throw new SQLParseException("syntax error, expect " + token + ", actual " + lexer.token() + " "
+ lexer.stringVal());
}
}
private int errorEndPos = -1;
protected void setErrorEndPos(int errPos) {
if (errPos > errorEndPos) {
errorEndPos = errPos;
}
}
}