Manual merge

1 files changed, 19 insertions, 5 deletions

diff --git a/sql/sql_lex.h b/sql/sql_lex.h
index b8bf3b220c9..feb8079a06b 100644
--- a/sql/sql_lex.h
+++ b/sql/sql_lex.h
@@ -1394,9 +1394,9 @@ public:
      @retval FALSE OK
      @retval TRUE  Error
   */
-  bool init(THD *thd, const char *buff, unsigned int length);
+  bool init(THD *thd, char *buff, unsigned int length);
 
-  void reset(const char *buff, unsigned int length);
+  void reset(char *buff, unsigned int length);
 
   /**
     Set the echo mode.
@@ -1512,6 +1512,20 @@ public:
   }
 
   /**
+    Puts a character back into the stream, canceling
+    the effect of the last yyGet() or yySkip().
+    Note that the echo mode should not change between calls
+    to unput, get, or skip from the stream.
+  */
+  char *yyUnput(char ch)
+  {
+    *--m_ptr= ch;
+    if (m_echo)
+      m_cpp_ptr--;
+    return m_ptr;
+  }
+
+  /**
     End of file indicator for the query text to parse.
     @return true if there are no more characters to parse
   */
@@ -1668,7 +1682,7 @@ public:
 
 private:
   /** Pointer to the current position in the raw input stream. */
-  const char *m_ptr;
+  char *m_ptr;
 
   /** Starting position of the last token parsed, in the raw buffer. */
   const char *m_tok_start;
@@ -2350,7 +2364,7 @@ public:
      @retval FALSE OK
      @retval TRUE  Error
   */
-  bool init(THD *thd, const char *buff, unsigned int length)
+  bool init(THD *thd, char *buff, unsigned int length)
   {
     return m_lip.init(thd, buff, length);
   }
@@ -2361,7 +2375,7 @@ public:
   Lex_input_stream m_lip;
   Yacc_state m_yacc;
 
-  void reset(const char *found_semicolon, unsigned int length)
+  void reset(char *found_semicolon, unsigned int length)
   {
     m_lip.reset(found_semicolon, length);
     m_yacc.reset();