Index: ext/fts5/fts5Int.h ================================================================== --- ext/fts5/fts5Int.h +++ ext/fts5/fts5Int.h @@ -698,10 +698,16 @@ int eType, Fts5ExprNode *pLeft, Fts5ExprNode *pRight, Fts5ExprNearset *pNear ); + +Fts5ExprNode *sqlite3Fts5ParseImplicitAnd( + Fts5Parse *pParse, + Fts5ExprNode *pLeft, + Fts5ExprNode *pRight +); Fts5ExprPhrase *sqlite3Fts5ParseTerm( Fts5Parse *pParse, Fts5ExprPhrase *pPhrase, Fts5Token *pToken, Index: ext/fts5/fts5_config.c ================================================================== --- ext/fts5/fts5_config.c +++ ext/fts5/fts5_config.c @@ -440,11 +440,13 @@ int ii = fts5Dequote(zOut); zRet = &zIn[ii]; *pbQuoted = 1; }else{ zRet = fts5ConfigSkipBareword(zIn); - zOut[zRet-zIn] = '\0'; + if( zRet ){ + zOut[zRet-zIn] = '\0'; + } } } if( zRet==0 ){ sqlite3_free(zOut); Index: ext/fts5/fts5_expr.c ================================================================== --- ext/fts5/fts5_expr.c +++ ext/fts5/fts5_expr.c @@ -1266,10 +1266,12 @@ pNode->bNomatch = 0; if( Fts5NodeIsString(pNode) ){ /* Initialize all term iterators in the NEAR object. */ rc = fts5ExprNearInitAll(pExpr, pNode); + }else if( pNode->xNext==0 ){ + pNode->bEof = 1; }else{ int i; int nEof = 0; for(i=0; inChild && rc==SQLITE_OK; i++){ Fts5ExprNode *pChild = pNode->apChild[i]; @@ -1317,27 +1319,26 @@ ** Return SQLITE_OK if successful, or an SQLite error code otherwise. It ** is not considered an error if the query does not match any documents. */ int sqlite3Fts5ExprFirst(Fts5Expr *p, Fts5Index *pIdx, i64 iFirst, int bDesc){ Fts5ExprNode *pRoot = p->pRoot; - int rc = SQLITE_OK; - if( pRoot->xNext ){ - p->pIndex = pIdx; - p->bDesc = bDesc; - rc = fts5ExprNodeFirst(p, pRoot); + int rc; /* Return code */ - /* If not at EOF but the current rowid occurs earlier than iFirst in - ** the iteration order, move to document iFirst or later. */ - if( pRoot->bEof==0 && fts5RowidCmp(p, pRoot->iRowid, iFirst)<0 ){ - rc = fts5ExprNodeNext(p, pRoot, 1, iFirst); - } + p->pIndex = pIdx; + p->bDesc = bDesc; + rc = fts5ExprNodeFirst(p, pRoot); - /* If the iterator is not at a real match, skip forward until it is. */ - while( pRoot->bNomatch ){ - assert( pRoot->bEof==0 && rc==SQLITE_OK ); - rc = fts5ExprNodeNext(p, pRoot, 0, 0); - } + /* If not at EOF but the current rowid occurs earlier than iFirst in + ** the iteration order, move to document iFirst or later. */ + if( pRoot->bEof==0 && fts5RowidCmp(p, pRoot->iRowid, iFirst)<0 ){ + rc = fts5ExprNodeNext(p, pRoot, 1, iFirst); + } + + /* If the iterator is not at a real match, skip forward until it is. */ + while( pRoot->bNomatch ){ + assert( pRoot->bEof==0 && rc==SQLITE_OK ); + rc = fts5ExprNodeNext(p, pRoot, 0, 0); } return rc; } /* @@ -1474,12 +1475,11 @@ UNUSED_PARAM2(iUnused1, iUnused2); /* If an error has already occurred, this is a no-op */ if( pCtx->rc!=SQLITE_OK ) return pCtx->rc; - assert( pPhrase==0 || pPhrase->nTerm>0 ); - if( pPhrase && (tflags & FTS5_TOKEN_COLOCATED) ){ + if( pPhrase && pPhrase->nTerm>0 && (tflags & FTS5_TOKEN_COLOCATED) ){ Fts5ExprTerm *pSyn; int nByte = sizeof(Fts5ExprTerm) + sizeof(Fts5Buffer) + nToken+1; pSyn = (Fts5ExprTerm*)sqlite3_malloc(nByte); if( pSyn==0 ){ rc = SQLITE_NOMEM; @@ -1576,11 +1576,11 @@ sqlite3_free(z); if( rc || (rc = sCtx.rc) ){ pParse->rc = rc; fts5ExprPhraseFree(sCtx.pPhrase); sCtx.pPhrase = 0; - }else if( sCtx.pPhrase ){ + }else{ if( pAppend==0 ){ if( (pParse->nPhrase % 8)==0 ){ int nByte = sizeof(Fts5ExprPhrase*) * (pParse->nPhrase + 8); Fts5ExprPhrase **apNew; @@ -1593,13 +1593,18 @@ pParse->apPhrase = apNew; } pParse->nPhrase++; } + if( sCtx.pPhrase==0 ){ + /* This happens when parsing a token or quoted phrase that contains + ** no token characters at all. (e.g ... MATCH '""'). */ + sCtx.pPhrase = sqlite3Fts5MallocZero(&pParse->rc, sizeof(Fts5ExprPhrase)); + }else if( sCtx.pPhrase->nTerm ){ + sCtx.pPhrase->aTerm[sCtx.pPhrase->nTerm-1].bPrefix = bPrefix; + } pParse->apPhrase[pParse->nPhrase-1] = sCtx.pPhrase; - assert( sCtx.pPhrase->nTerm>0 ); - sCtx.pPhrase->aTerm[sCtx.pPhrase->nTerm-1].bPrefix = bPrefix; } return sCtx.pPhrase; } @@ -1691,27 +1696,29 @@ void sqlite3Fts5ParseSetDistance( Fts5Parse *pParse, Fts5ExprNearset *pNear, Fts5Token *p ){ - int nNear = 0; - int i; - if( p->n ){ - for(i=0; in; i++){ - char c = (char)p->p[i]; - if( c<'0' || c>'9' ){ - sqlite3Fts5ParseError( - pParse, "expected integer, got \"%.*s\"", p->n, p->p - ); - return; + if( pNear ){ + int nNear = 0; + int i; + if( p->n ){ + for(i=0; in; i++){ + char c = (char)p->p[i]; + if( c<'0' || c>'9' ){ + sqlite3Fts5ParseError( + pParse, "expected integer, got \"%.*s\"", p->n, p->p + ); + return; + } + nNear = nNear * 10 + (p->p[i] - '0'); } - nNear = nNear * 10 + (p->p[i] - '0'); + }else{ + nNear = FTS5_DEFAULT_NEARDIST; } - }else{ - nNear = FTS5_DEFAULT_NEARDIST; + pNear->nNear = nNear; } - pNear->nNear = nNear; } /* ** The second argument passed to this function may be NULL, or it may be ** an existing Fts5Colset object. This function returns a pointer to @@ -1894,14 +1901,18 @@ fts5ExprAssignXNext(pRet); if( eType==FTS5_STRING ){ int iPhrase; for(iPhrase=0; iPhrasenPhrase; iPhrase++){ pNear->apPhrase[iPhrase]->pNode = pRet; + if( pNear->apPhrase[iPhrase]->nTerm==0 ){ + pRet->xNext = 0; + pRet->eType = FTS5_EOF; + } } if( pParse->pConfig->eDetail!=FTS5_DETAIL_FULL - && (pNear->nPhrase!=1 || pNear->apPhrase[0]->nTerm!=1) + && (pNear->nPhrase!=1 || pNear->apPhrase[0]->nTerm>1) ){ assert( pParse->rc==SQLITE_OK ); pParse->rc = SQLITE_ERROR; assert( pParse->zErr==0 ); pParse->zErr = sqlite3_mprintf( @@ -1923,10 +1934,74 @@ assert( pParse->rc!=SQLITE_OK ); sqlite3Fts5ParseNodeFree(pLeft); sqlite3Fts5ParseNodeFree(pRight); sqlite3Fts5ParseNearsetFree(pNear); } + return pRet; +} + +Fts5ExprNode *sqlite3Fts5ParseImplicitAnd( + Fts5Parse *pParse, /* Parse context */ + Fts5ExprNode *pLeft, /* Left hand child expression */ + Fts5ExprNode *pRight /* Right hand child expression */ +){ + Fts5ExprNode *pRet = 0; + Fts5ExprNode *pPrev; + + if( pParse->rc ){ + sqlite3Fts5ParseNodeFree(pLeft); + sqlite3Fts5ParseNodeFree(pRight); + }else{ + + assert( pLeft->eType==FTS5_STRING + || pLeft->eType==FTS5_TERM + || pLeft->eType==FTS5_EOF + || pLeft->eType==FTS5_AND + ); + assert( pRight->eType==FTS5_STRING + || pRight->eType==FTS5_TERM + || pRight->eType==FTS5_EOF + ); + + if( pLeft->eType==FTS5_AND ){ + pPrev = pLeft->apChild[pLeft->nChild-1]; + }else{ + pPrev = pLeft; + } + assert( pPrev->eType==FTS5_STRING + || pPrev->eType==FTS5_TERM + || pPrev->eType==FTS5_EOF + ); + + if( pRight->eType==FTS5_EOF ){ + assert( pParse->apPhrase[pParse->nPhrase-1]==pRight->pNear->apPhrase[0] ); + sqlite3Fts5ParseNodeFree(pRight); + pRet = pLeft; + pParse->nPhrase--; + } + else if( pPrev->eType==FTS5_EOF ){ + Fts5ExprPhrase **ap; + + if( pPrev==pLeft ){ + pRet = pRight; + }else{ + pLeft->apChild[pLeft->nChild-1] = pRight; + pRet = pLeft; + } + + ap = &pParse->apPhrase[pParse->nPhrase-1-pRight->pNear->nPhrase]; + assert( ap[0]==pPrev->pNear->apPhrase[0] ); + memmove(ap, &ap[1], sizeof(Fts5ExprPhrase*)*pRight->pNear->nPhrase); + pParse->nPhrase--; + + sqlite3Fts5ParseNodeFree(pPrev); + } + else{ + pRet = sqlite3Fts5ParseNode(pParse, FTS5_AND, pLeft, pRight, 0); + } + } + return pRet; } static char *fts5ExprTermPrint(Fts5ExprTerm *pTerm){ int nByte = 0; @@ -2060,10 +2135,13 @@ return zRet; } static char *fts5ExprPrint(Fts5Config *pConfig, Fts5ExprNode *pExpr){ char *zRet = 0; + if( pExpr->eType==0 ){ + return sqlite3_mprintf("\"\""); + }else if( pExpr->eType==FTS5_STRING || pExpr->eType==FTS5_TERM ){ Fts5ExprNearset *pNear = pExpr->pNear; int i; int iTerm; @@ -2120,11 +2198,11 @@ if( z==0 ){ sqlite3_free(zRet); zRet = 0; }else{ int e = pExpr->apChild[i]->eType; - int b = (e!=FTS5_STRING && e!=FTS5_TERM); + int b = (e!=FTS5_STRING && e!=FTS5_TERM && e!=FTS5_EOF); zRet = fts5PrintfAppend(zRet, "%s%s%z%s", (i==0 ? "" : zOp), (b?"(":""), z, (b?")":"") ); } Index: ext/fts5/fts5parse.y ================================================================== --- ext/fts5/fts5parse.y +++ ext/fts5/fts5parse.y @@ -102,11 +102,11 @@ expr(A) ::= LP expr(X) RP. {A = X;} expr(A) ::= exprlist(X). {A = X;} exprlist(A) ::= cnearset(X). {A = X;} exprlist(A) ::= exprlist(X) cnearset(Y). { - A = sqlite3Fts5ParseNode(pParse, FTS5_AND, X, Y, 0); + A = sqlite3Fts5ParseImplicitAnd(pParse, X, Y); } cnearset(A) ::= nearset(X). { A = sqlite3Fts5ParseNode(pParse, FTS5_STRING, 0, 0, X); } Index: ext/fts5/test/fts5eb.test ================================================================== --- ext/fts5/test/fts5eb.test +++ ext/fts5/test/fts5eb.test @@ -31,16 +31,16 @@ foreach {tn expr res} { 1 {abc} {"abc"} 2 {abc ""} {"abc"} 3 {""} {} - 4 {abc OR ""} {"abc"} - 5 {abc NOT ""} {"abc"} - 6 {abc AND ""} {"abc"} - 7 {"" OR abc} {"abc"} - 8 {"" NOT abc} {"abc"} - 9 {"" AND abc} {"abc"} + 4 {abc OR ""} {"abc" OR ""} + 5 {abc NOT ""} {"abc" NOT ""} + 6 {abc AND ""} {"abc" AND ""} + 7 {"" OR abc} {"" OR "abc"} + 8 {"" NOT abc} {"" NOT "abc"} + 9 {"" AND abc} {"" AND "abc"} 10 {abc + "" + def} {"abc" + "def"} 11 {abc "" def} {"abc" AND "def"} 12 {r+e OR w} {"r" + "e" OR "w"} 13 {a AND b NOT c} {"a" AND ("b" NOT "c")} ADDED ext/fts5/test/fts5fuzz1.test Index: ext/fts5/test/fts5fuzz1.test ================================================================== --- ext/fts5/test/fts5fuzz1.test +++ ext/fts5/test/fts5fuzz1.test @@ -0,0 +1,89 @@ +# 2014 June 17 +# +# The author disclaims copyright to this source code. In place of +# a legal notice, here is a blessing: +# +# May you do good and not evil. +# May you find forgiveness for yourself and forgive others. +# May you share freely, never taking more than you give. +# +#************************************************************************* +# This file implements regression tests for SQLite library. The +# focus of this script is testing the FTS5 module. +# + +source [file join [file dirname [info script]] fts5_common.tcl] +return_if_no_fts5 +set testprefix fts5fuzz1 + + +#------------------------------------------------------------------------- +reset_db +do_catchsql_test 1.1 { + CREATE VIRTUAL TABLE f1 USING fts5(a b); +} {/1 {parse error in.*}/} + + +#------------------------------------------------------------------------- +reset_db +do_execsql_test 2.1 { + CREATE VIRTUAL TABLE f1 USING fts5(a, b); + INSERT INTO f1 VALUES('a b', 'c d'); + INSERT INTO f1 VALUES('e f', 'a b'); +} + +do_execsql_test 2.2.1 { + SELECT rowid FROM f1('""'); +} {} + +do_execsql_test 2.2.2 { + SELECT rowid FROM f1('"" AND a'); +} {} + + +do_execsql_test 2.2.3 { + SELECT rowid FROM f1('"" a'); +} {1 2} + +do_execsql_test 2.2.4 { + SELECT rowid FROM f1('"" OR a'); +} {1 2} + +do_execsql_test 2.3 { + SELECT a, b FROM f1('NEAR("")'); +} {} + +do_execsql_test 2.4 { + SELECT a, b FROM f1('NEAR("", 5)'); +} {} + +do_execsql_test 2.5 { + SELECT a, b FROM f1('NEAR("" c, 5)'); +} {} + +do_execsql_test 2.6 { + SELECT a, b FROM f1('NEAR("" c d, 5)'); +} {} + +do_execsql_test 2.7 { + SELECT a, b FROM f1('NEAR(c d, 5)'); +} {{a b} {c d}} + +do_execsql_test 2.8 { + SELECT rowid FROM f1('NEAR("a" "b", 5)'); +} {1 2} + +#------------------------------------------------------------------------- +reset_db +do_execsql_test 3.2 { + CREATE VIRTUAL TABLE f2 USING fts5(o, t, tokenize="ascii separators abc"); + SELECT * FROM f2('a+4'); +} {} + + + + + +finish_test + +