improve sql wall

src/main/java/com/alibaba/druid/sql/parser/CharTypes.java

@@ -15,6 +15,8 @@
  */
 package com.alibaba.druid.sql.parser;
 
+import static com.alibaba.druid.sql.parser.LayoutCharacters.EOI;
+
 public class CharTypes {
 
     private final static boolean[] hexFlags = new boolean[256];
@@ -53,9 +55,9 @@ public class CharTypes {
     }
 
     public static boolean isFirstIdentifierChar(char c) {
-       if (c <= firstIdentifierFlags.length) {
-           return firstIdentifierFlags[c];
-       }
+        if (c <= firstIdentifierFlags.length) {
+            return firstIdentifierFlags[c];
+        }
         return c != '　' && c != '，';
     }
 
@@ -85,12 +87,15 @@ public class CharTypes {
 
     private final static boolean[] whitespaceFlags = new boolean[256];
     static {
-        whitespaceFlags[' '] = true;
-        whitespaceFlags['\n'] = true;
-        whitespaceFlags['\r'] = true;
-        whitespaceFlags['\t'] = true;
-        whitespaceFlags['\f'] = true;
-        whitespaceFlags['\b'] = true;
+        for (int i = 0; i <= 32; ++i) {
+            whitespaceFlags[i] = true;
+        }
+        
+        whitespaceFlags[EOI] = false;
+        for (int i = 0x7F; i <= 0xA0; ++i) {
+            whitespaceFlags[i] = true;
+        }
+   
         whitespaceFlags[160] = true; // 特别处理
     }