Import SQLite 3.7.6.3.

third_party/sqlite/src/src/complete.c

Index: third_party/sqlite/src/src/complete.c
diff --git a/third_party/sqlite/src/src/complete.c b/third_party/sqlite/src/src/complete.c
index 8993cfd455410a74c27b025c0474a3cda7ebf845..9e9140085c0046ed3bf6f4485220692dca1743c5 100644
--- a/third_party/sqlite/src/src/complete.c
+++ b/third_party/sqlite/src/src/complete.c
@@ -15,8 +15,6 @@
 ** This code used to be part of the tokenizer.c source file.  But by
 ** separating it out, the code will be automatically omitted from
 ** static links that do not use it.
-**
-** $Id: complete.c,v 1.8 2009/04/28 04:46:42 drh Exp $
 */
 #include "sqliteInt.h"
 #ifndef SQLITE_OMIT_COMPLETE
@@ -26,8 +24,7 @@
 */
 #ifndef SQLITE_AMALGAMATION
 #ifdef SQLITE_ASCII
-extern const char sqlite3IsAsciiIdChar[];
-#define IdChar(C)  (((c=C)&0x80)!=0 || (c>0x1f && sqlite3IsAsciiIdChar[c-0x20]))
+#define IdChar(C)  ((sqlite3CtypeMap[(unsigned char)C]&0x46)!=0)
 #endif
 #ifdef SQLITE_EBCDIC
 extern const char sqlite3IsEbcdicIdChar[];
@@ -43,11 +40,13 @@ extern const char sqlite3IsEbcdicIdChar[];
 #define tkSEMI    0
 #define tkWS      1
 #define tkOTHER   2
+#ifndef SQLITE_OMIT_TRIGGER
 #define tkEXPLAIN 3
 #define tkCREATE  4
 #define tkTEMP    5
 #define tkTRIGGER 6
 #define tkEND     7
+#endif
 
 /*
 ** Return TRUE if the given SQL string ends in a semicolon.
@@ -56,36 +55,38 @@ extern const char sqlite3IsEbcdicIdChar[];
 ** Whenever the CREATE TRIGGER keywords are seen, the statement
 ** must end with ";END;".
 **
-** This implementation uses a state machine with 7 states:
+** This implementation uses a state machine with 8 states:
 **
-**   (0) START     At the beginning or end of an SQL statement.  This routine
+**   (0) INVALID   We have not yet seen a non-whitespace character.
+**
+**   (1) START     At the beginning or end of an SQL statement.  This routine
 **                 returns 1 if it ends in the START state and 0 if it ends
 **                 in any other state.
 **
-**   (1) NORMAL    We are in the middle of statement which ends with a single
+**   (2) NORMAL    We are in the middle of statement which ends with a single
 **                 semicolon.
 **
-**   (2) EXPLAIN   The keyword EXPLAIN has been seen at the beginning of 
+**   (3) EXPLAIN   The keyword EXPLAIN has been seen at the beginning of 
 **                 a statement.
 **
-**   (3) CREATE    The keyword CREATE has been seen at the beginning of a
+**   (4) CREATE    The keyword CREATE has been seen at the beginning of a
 **                 statement, possibly preceeded by EXPLAIN and/or followed by
 **                 TEMP or TEMPORARY
 **
-**   (4) TRIGGER   We are in the middle of a trigger definition that must be
+**   (5) TRIGGER   We are in the middle of a trigger definition that must be
 **                 ended by a semicolon, the keyword END, and another semicolon.
 **
-**   (5) SEMI      We've seen the first semicolon in the ";END;" that occurs at
+**   (6) SEMI      We've seen the first semicolon in the ";END;" that occurs at
 **                 the end of a trigger definition.
 **
-**   (6) END       We've seen the ";END" of the ";END;" that occurs at the end
+**   (7) END       We've seen the ";END" of the ";END;" that occurs at the end
 **                 of a trigger difinition.
 **
 ** Transitions between states above are determined by tokens extracted
 ** from the input.  The following tokens are significant:
 **
 **   (0) tkSEMI      A semicolon.
-**   (1) tkWS        Whitespace
+**   (1) tkWS        Whitespace.
 **   (2) tkOTHER     Any other SQL token.
 **   (3) tkEXPLAIN   The "explain" keyword.
 **   (4) tkCREATE    The "create" keyword.
@@ -94,6 +95,7 @@ extern const char sqlite3IsEbcdicIdChar[];
 **   (7) tkEND       The "end" keyword.
 **
 ** Whitespace never causes a state transition and is always ignored.
+** This means that a SQL string of all whitespace is invalid.
 **
 ** If we compile with SQLITE_OMIT_TRIGGER, all of the computation needed
 ** to recognize the end of a trigger can be omitted.  All we have to do
@@ -107,26 +109,28 @@ int sqlite3_complete(const char *zSql){
   /* A complex statement machine used to detect the end of a CREATE TRIGGER
   ** statement.  This is the normal case.
   */
-  static const u8 trans[7][8] = {
+  static const u8 trans[8][8] = {
                      /* Token:                                                */
-     /* State:       **  SEMI  WS  OTHER EXPLAIN  CREATE  TEMP  TRIGGER  END  */
-     /* 0   START: */ {    0,  0,     1,      2,      3,    1,       1,   1,  },
-     /* 1  NORMAL: */ {    0,  1,     1,      1,      1,    1,       1,   1,  },
-     /* 2 EXPLAIN: */ {    0,  2,     2,      1,      3,    1,       1,   1,  },
-     /* 3  CREATE: */ {    0,  3,     1,      1,      1,    3,       4,   1,  },
-     /* 4 TRIGGER: */ {    5,  4,     4,      4,      4,    4,       4,   4,  },
-     /* 5    SEMI: */ {    5,  5,     4,      4,      4,    4,       4,   6,  },
-     /* 6     END: */ {    0,  6,     4,      4,      4,    4,       4,   4,  },
+     /* State:       **  SEMI  WS  OTHER  EXPLAIN  CREATE  TEMP  TRIGGER  END */
+     /* 0 INVALID: */ {    1,  0,     2,       3,      4,    2,       2,   2, },
+     /* 1   START: */ {    1,  1,     2,       3,      4,    2,       2,   2, },
+     /* 2  NORMAL: */ {    1,  2,     2,       2,      2,    2,       2,   2, },
+     /* 3 EXPLAIN: */ {    1,  3,     3,       2,      4,    2,       2,   2, },
+     /* 4  CREATE: */ {    1,  4,     2,       2,      2,    4,       5,   2, },
+     /* 5 TRIGGER: */ {    6,  5,     5,       5,      5,    5,       5,   5, },
+     /* 6    SEMI: */ {    6,  6,     5,       5,      5,    5,       5,   7, },
+     /* 7     END: */ {    1,  7,     5,       5,      5,    5,       5,   5, },
   };
 #else
-  /* If triggers are not suppored by this compile then the statement machine
+  /* If triggers are not supported by this compile then the statement machine
   ** used to detect the end of a statement is much simplier
   */
-  static const u8 trans[2][3] = {
+  static const u8 trans[3][3] = {
                      /* Token:           */
      /* State:       **  SEMI  WS  OTHER */
-     /* 0   START: */ {    0,  0,     1, },
-     /* 1  NORMAL: */ {    0,  1,     1, },
+     /* 0 INVALID: */ {    1,  0,     2, },
+     /* 1   START: */ {    1,  1,     2, },
+     /* 2  NORMAL: */ {    1,  2,     2, },
   };
 #endif /* SQLITE_OMIT_TRIGGER */
 
@@ -162,7 +166,7 @@ int sqlite3_complete(const char *zSql){
           break;
         }
         while( *zSql && *zSql!='\n' ){ zSql++; }
-        if( *zSql==0 ) return state==0;
+        if( *zSql==0 ) return state==1;
         token = tkWS;
         break;
       }
@@ -184,7 +188,9 @@ int sqlite3_complete(const char *zSql){
         break;
       }
       default: {
-        int c;
+#ifdef SQLITE_EBCDIC
+        unsigned char c;
+#endif
         if( IdChar((u8)*zSql) ){
           /* Keywords and unquoted identifiers */
           int nId;
@@ -244,7 +250,7 @@ int sqlite3_complete(const char *zSql){
     state = trans[state][token];
     zSql++;
   }
-  return state==0;
+  return state==1;
 }
 
 #ifndef SQLITE_OMIT_UTF16