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支持中文空格
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wenshao
@@ -1,98 +1,99 @@
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/*
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* Copyright 1999-2011 Alibaba Group Holding Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.alibaba.druid.sql.parser;
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public class CharTypes {
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private final static boolean[] hexFlags = new boolean[256];
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static {
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for (char c = 0; c < hexFlags.length; ++c) {
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if (c >= 'A' && c <= 'F') {
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hexFlags[c] = true;
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} else if (c >= 'a' && c <= 'f') {
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hexFlags[c] = true;
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} else if (c >= '0' && c <= '9') {
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hexFlags[c] = true;
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}
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}
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}
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public static boolean isHex(char c) {
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return c < 256 && hexFlags[c];
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}
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public static boolean isDigit(char c) {
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return c >= '0' && c <= '9';
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}
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private final static boolean[] firstIdentifierFlags = new boolean[256];
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static {
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for (char c = 0; c < firstIdentifierFlags.length; ++c) {
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if (c >= 'A' && c <= 'Z') {
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firstIdentifierFlags[c] = true;
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} else if (c >= 'a' && c <= 'z') {
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firstIdentifierFlags[c] = true;
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}
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}
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firstIdentifierFlags['`'] = true;
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firstIdentifierFlags['_'] = true;
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firstIdentifierFlags['$'] = true;
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}
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public static boolean isFirstIdentifierChar(char c) {
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return c > firstIdentifierFlags.length || firstIdentifierFlags[c];
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}
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private final static boolean[] identifierFlags = new boolean[256];
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static {
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for (char c = 0; c < identifierFlags.length; ++c) {
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if (c >= 'A' && c <= 'Z') {
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identifierFlags[c] = true;
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} else if (c >= 'a' && c <= 'z') {
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identifierFlags[c] = true;
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} else if (c >= '0' && c <= '9') {
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identifierFlags[c] = true;
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}
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}
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// identifierFlags['`'] = true;
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identifierFlags['_'] = true;
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identifierFlags['$'] = true;
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identifierFlags['#'] = true;
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}
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public static boolean isIdentifierChar(char c) {
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return c > identifierFlags.length || identifierFlags[c];
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}
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private final static boolean[] whitespaceFlags = new boolean[256];
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static {
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whitespaceFlags[' '] = true;
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whitespaceFlags['\n'] = true;
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whitespaceFlags['\r'] = true;
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whitespaceFlags['\t'] = true;
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whitespaceFlags['\f'] = true;
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whitespaceFlags['\b'] = true;
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whitespaceFlags[160] = true; // 特别处理
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}
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/**
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* @return false if {@link LayoutCharacters#EOI}
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*/
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public static boolean isWhitespace(char c) {
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return c <= whitespaceFlags.length && whitespaceFlags[c];
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}
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}
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/*
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* Copyright 1999-2011 Alibaba Group Holding Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.alibaba.druid.sql.parser;
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public class CharTypes {
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private final static boolean[] hexFlags = new boolean[256];
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static {
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for (char c = 0; c < hexFlags.length; ++c) {
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if (c >= 'A' && c <= 'F') {
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hexFlags[c] = true;
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} else if (c >= 'a' && c <= 'f') {
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hexFlags[c] = true;
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} else if (c >= '0' && c <= '9') {
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hexFlags[c] = true;
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}
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}
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}
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public static boolean isHex(char c) {
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return c < 256 && hexFlags[c];
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}
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public static boolean isDigit(char c) {
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return c >= '0' && c <= '9';
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}
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private final static boolean[] firstIdentifierFlags = new boolean[256];
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static {
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for (char c = 0; c < firstIdentifierFlags.length; ++c) {
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if (c >= 'A' && c <= 'Z') {
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firstIdentifierFlags[c] = true;
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} else if (c >= 'a' && c <= 'z') {
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firstIdentifierFlags[c] = true;
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}
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}
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firstIdentifierFlags['`'] = true;
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firstIdentifierFlags['_'] = true;
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firstIdentifierFlags['$'] = true;
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}
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public static boolean isFirstIdentifierChar(char c) {
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return c > firstIdentifierFlags.length || firstIdentifierFlags[c];
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}
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private final static boolean[] identifierFlags = new boolean[256];
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static {
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for (char c = 0; c < identifierFlags.length; ++c) {
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if (c >= 'A' && c <= 'Z') {
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identifierFlags[c] = true;
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} else if (c >= 'a' && c <= 'z') {
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identifierFlags[c] = true;
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} else if (c >= '0' && c <= '9') {
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identifierFlags[c] = true;
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}
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}
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// identifierFlags['`'] = true;
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identifierFlags['_'] = true;
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identifierFlags['$'] = true;
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identifierFlags['#'] = true;
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}
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public static boolean isIdentifierChar(char c) {
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return c > identifierFlags.length || identifierFlags[c];
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}
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private final static boolean[] whitespaceFlags = new boolean[256];
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static {
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whitespaceFlags[' '] = true;
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whitespaceFlags['\n'] = true;
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whitespaceFlags['\r'] = true;
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whitespaceFlags['\t'] = true;
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whitespaceFlags['\f'] = true;
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whitespaceFlags['\b'] = true;
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whitespaceFlags[160] = true; // 特别处理
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}
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/**
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* @return false if {@link LayoutCharacters#EOI}
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*/
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public static boolean isWhitespace(char c) {
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return (c <= whitespaceFlags.length && whitespaceFlags[c]) //
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|| c == ' '; // Chinese space
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}
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}
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