improved sql formatter

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

@@ -77,6 +77,8 @@ public class Lexer {
     protected boolean        endOfComment = false;
     
     protected boolean        keepComments = false;
+    
+    protected int            line         = 0;
 
     public Lexer(String input){
         this(input, null);
@@ -293,6 +295,10 @@ public class Lexer {
 
         for (;;) {
             if (isWhitespace(ch)) {
+                if (ch == '\n') {
+                    line++;
+                }
+                
                 scanChar();
                 continue;
             }
@@ -827,6 +833,7 @@ public class Lexer {
         for (;;) {
             if (ch == '\r') {
                 if (charAt(pos + 1) == '\n') {
+                    line++;
                     scanChar();
                     break;
                 }
@@ -835,6 +842,7 @@ public class Lexer {
             }
 
             if (ch == '\n') {
+                line++;
                 scanChar();
                 break;
             }
@@ -1181,4 +1189,8 @@ public class Lexer {
         }
         comments.add(stringVal);
     }
+    
+    public int getLine() {
+        return line;
+    }
 }