** Token types used by the sqlite3_complete() routine. See the header
** comments on that procedure for additional information.
*/
-#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
+#define tkSEMI 0 /* ; */
+#define tkWS 1 /* whitespace */
+#define tkOTHER 2 /* other puntuation, literal-value, or quoted ID */
+#define tkEXPLAIN 3 /* EXPLAIN keyword */
+#define tkCREATE 4 /* CREATE keyword */
+#define tkTRIGGER 5 /* TRIGGER keyword */
+#define tkEND 6 /* END keyword */
+#define tkFOR 7 /* FOR keyword */
+#define tkEACH 8 /* EACH keyword */
+#define tkROW 9 /* ROW keyword */
+#define tkKYWD 10 /* Any other keyword */
/*
** Return TRUE if the given SQL string ends in a semicolon.
**
** This implementation uses a state machine with 8 states:
**
-** (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.
** (2) NORMAL We are in the middle of statement which ends with a single
** semicolon.
**
-** (3) EXPLAIN The keyword EXPLAIN has been seen at the beginning of
+** (2) EXPLAIN The keyword EXPLAIN has been seen at the beginning of
** a statement.
**
-** (4) CREATE The keyword CREATE has been seen at the beginning of a
+** (3) CREATE The keyword CREATE has been seen at the beginning of a
** statement, possibly preceded by EXPLAIN and/or followed by
** TEMP or TEMPORARY
**
-** (5) TRIGGER We are in the middle of a trigger definition that must be
-** ended by a semicolon, the keyword END, and another semicolon.
+** (4) TRIGGER We are in the middle of a trigger definition or FOR EACH ROW
+** statement that must be ended by ";END:"
**
-** (6) SEMI We've seen the first semicolon in the ";END;" that occurs at
+** (5) SEMI We've seen the first semicolon in the ";END;" that occurs at
** the end of a trigger definition.
**
-** (7) END We've seen the ";END" of the ";END;" that occurs at the end
+** (6) END We've seen the ";END" of the ";END;" that occurs at the end
** of a trigger definition.
**
+** (7) FOR We've seen the "FOR" keyword near the beginning of a
+** statement. Awaiting a following "EACH".
+**
+** (8) EACH We've seen keywrods "FOR" and "EACH" near the beginning of
+** of a statement and are awaiting a "ROW" token.
+**
+** (9) INIT No non-whitespace input seen so far.
+**
+**
** Transitions between states above are determined by tokens extracted
** from the input. The following tokens are significant:
**
** (0) tkSEMI A semicolon.
** (1) tkWS Whitespace.
-** (2) tkOTHER Any other SQL token.
+** (2) tkOTHER Any other token.
** (3) tkEXPLAIN The "explain" keyword.
** (4) tkCREATE The "create" keyword.
-** (5) tkTEMP The "temp" or "temporary" keyword.
-** (6) tkTRIGGER The "trigger" keyword.
-** (7) tkEND The "end" keyword.
+** (5) tkTRIGGER The "trigger" keyword.
+** (6) tkEND The "end" keyword.
+** (7) tkFOR The "for" keyword.
+** (8) tkEACH The "each" keyword.
+** (9) tkROW The "row" keyword.
+** (10) tkKYWD Any other keyword-like token.
**
** Whitespace never causes a state transition and is always ignored.
** This means that a SQL string of all whitespace is invalid.
** is look for a semicolon that is not part of an string or comment.
*/
int sqlite3_complete(const char *zSql){
- u8 state = 0; /* Current state, using numbers defined in header comment */
+ u8 state = 9; /* Current state, using numbers defined in header comment */
u8 token; /* Value of the next token */
-#ifndef SQLITE_OMIT_TRIGGER
/* A complex statement machine used to detect the end of a CREATE TRIGGER
** statement. This is the normal case.
*/
- static const u8 trans[8][8] = {
- /* Token: */
- /* 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 supported by this compile then the statement machine
- ** used to detect the end of a statement is much simpler
- */
- static const u8 trans[3][3] = {
- /* Token: */
- /* State: ** SEMI WS OTHER */
- /* 0 INVALID: */ { 1, 0, 2, },
- /* 1 START: */ { 1, 1, 2, },
- /* 2 NORMAL: */ { 1, 2, 2, },
+ static const u8 trans[10][11] = {
+ /* Token: */
+ /* 0 1 2 3 4 5 6 7 8 9 10 */
+/* State: ** SEMI WS OTHER EXPLN CREATE TRIGR END FOR EACH ROW KYWD */
+/* 0 START: */{ 0, 0, 1, 2, 3, 1, 1, 7, 1, 1, 1 },
+/* 1 NORMAL: */{ 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
+/* 2 EXPLAIN: */{ 0, 2, 1, 1, 3, 1, 1, 7, 1, 1, 2 },
+/* 3 CREATE: */{ 0, 3, 1, 1, 1, 4, 1, 1, 1, 1, 3 },
+/* 4 TRIGGER: */{ 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 },
+/* 5 SEMI: */{ 5, 5, 4, 4, 4, 4, 6, 4, 4, 4, 4 },
+/* 6 END: */{ 0, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4 },
+/* 7 FOR: */{ 0, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
+/* 8 EACH: */{ 0, 8, 1, 1, 1, 1, 1, 1, 1, 4, 1 },
+/* 9 INIT: */{ 0, 9, 1, 2, 3, 1, 1, 7, 1, 1, 1 }
};
-#endif /* SQLITE_OMIT_TRIGGER */
+
#ifdef SQLITE_ENABLE_API_ARMOR
if( zSql==0 ){
/* Keywords and unquoted identifiers */
int nId;
for(nId=1; IdChar(zSql[nId]); nId++){}
-#ifdef SQLITE_OMIT_TRIGGER
- token = tkOTHER;
-#else
switch( *zSql ){
case 'c': case 'C': {
if( nId==6 && sqlite3StrNICmp(zSql, "create", 6)==0 ){
token = tkCREATE;
}else{
- token = tkOTHER;
- }
- break;
- }
- case 't': case 'T': {
- if( nId==7 && sqlite3StrNICmp(zSql, "trigger", 7)==0 ){
- token = tkTRIGGER;
- }else if( nId==4 && sqlite3StrNICmp(zSql, "temp", 4)==0 ){
- token = tkTEMP;
- }else if( nId==9 && sqlite3StrNICmp(zSql, "temporary", 9)==0 ){
- token = tkTEMP;
- }else{
- token = tkOTHER;
+ token = tkKYWD;
}
break;
}
if( nId==3 && sqlite3StrNICmp(zSql, "end", 3)==0 ){
token = tkEND;
}else
-#ifndef SQLITE_OMIT_EXPLAIN
if( nId==7 && sqlite3StrNICmp(zSql, "explain", 7)==0 ){
token = tkEXPLAIN;
}else
-#endif
- {
- token = tkOTHER;
+ if( nId==4 && sqlite3StrNICmp(zSql, "each", 4)==0 ){
+ token = tkEACH;
+ }else{
+ token = tkKYWD;
+ }
+ break;
+ }
+ case 'f': case 'F': {
+ if( nId==3 && sqlite3StrNICmp(zSql, "for", 3)==0 ){
+ token = tkFOR;
+ }else{
+ token = tkKYWD;
+ }
+ break;
+ }
+ case 'r': case 'R': {
+ if( nId==3 && sqlite3StrNICmp(zSql, "row", 3)==0 ){
+ token = tkROW;
+ }else{
+ token = tkKYWD;
+ }
+ break;
+ }
+ case 't': case 'T': {
+ if( nId==7 && sqlite3StrNICmp(zSql, "trigger", 7)==0 ){
+ token = tkTRIGGER;
+ }else{
+ token = tkKYWD;
}
break;
}
default: {
- token = tkOTHER;
+ token = tkKYWD;
break;
}
}
-#endif /* SQLITE_OMIT_TRIGGER */
zSql += nId-1;
}else{
/* Operators and special symbols */
break;
}
}
+#if 0
+ printf("COMPLETER: %d.%d -> %d\n", state, token, trans[state][token]);
+#endif
state = trans[state][token];
zSql++;
}
- return state==1;
+ return state==0;
}
#ifndef SQLITE_OMIT_UTF16
projects / thirdparty / sqlite.git / commitdiff
