Enhance TreeView to show WITH clauses. Add an assert to detect the

infinite loop behavior when certain kinds of errors occur on a nested
WITH clause.

FossilOrigin-Name: 2040d88e877bdb69de125a047cefb4a1558e89e8

manifest

@@ -1,5 +1,5 @@
-C The\sOPFLAG_SEEKEQ\soptimization\sis\sonly\sapplicable\sto\sequality\scomparisons\nagainst\san\sindex,\snot\sagainst\sa\srowid\stable.
-D 2015-11-07T01:19:00.997
+C Enhance\sTreeView\sto\sshow\sWITH\sclauses.\s\sAdd\san\sassert\sto\sdetect\sthe\ninfinite\sloop\sbehavior\swhen\scertain\skinds\sof\serrors\soccur\son\sa\snested\nWITH\sclause.
+D 2015-11-07T15:19:59.796
 F Makefile.in 3a705bb4bd12e194212ddbdbf068310d17153cdb
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc 702d3e98f3afc6587a78481257f3c4c900efc3a4
@@ -340,12 +340,12 @@ F src/printf.c 0c4bcdd1c2e2521024f0a69cb5eb334f86b3652a
 F src/random.c ba2679f80ec82c4190062d756f22d0c358180696
 F src/resolve.c 1954a0f01bf65d78d7d559aea3d5c67f33376d91
 F src/rowset.c eccf6af6d620aaa4579bd3b72c1b6395d9e9fa1e
-F src/select.c 167b4e9058bc8e997d18d6b6b20ecbb0c9c457af
+F src/select.c f5b0518eeb623ab4e6883a04b19602e5f914cfd7
 F src/shell.c d25df04168d6ba5a4fa05bdbf859df667f9eb621
 F src/sqlite.h.in 3cfc86c55e57c63d86b9e1e92869e2bfb162ca8e
 F src/sqlite3.rc 992c9f5fb8285ae285d6be28240a7e8d3a7f2bad
 F src/sqlite3ext.h 4b66e3e3435da4b4c8c83696d0349f0c503b3924
-F src/sqliteInt.h 12ff325b433c4ded39995b74b01b78aacc19805a
+F src/sqliteInt.h a6cddd46ae93372eb3b1acd4f2f23c4de02a94d6
 F src/sqliteLimit.h 216557999cb45f2e3578ed53ebefe228d779cb46
 F src/status.c 70912d7be68e9e2dbc4010c93d344af61d4c59ba
 F src/table.c 51b46b2a62d1b3a959633d593b89bab5e2c9155e
@@ -397,7 +397,7 @@ F src/test_vfstrace.c bab9594adc976cbe696ff3970728830b4c5ed698
 F src/test_wsd.c 41cadfd9d97fe8e3e4e44f61a4a8ccd6f7ca8fe9
 F src/threads.c bbfb74450643cb5372a43ad4f6cffd7e9dfcecb0
 F src/tokenize.c 338bc8f7c9dd103188952cda7964696bacac6d22
-F src/treeview.c 154f0acc622fa3514de8777dcedf4c8a8802b4ce
+F src/treeview.c 78842e90c1f71269e7a73a1d4221b6fe360bab66
 F src/trigger.c 322f23aad694e8f31d384dcfa386d52a48d3c52f
 F src/update.c 40e51cd0883cb5bfd6abb7d8a7cd8aa47fab2945
 F src/utf.c fc6b889ba0779b7722634cdeaa25f1930d93820c
@@ -1400,7 +1400,10 @@ F tool/vdbe_profile.tcl 246d0da094856d72d2c12efec03250d71639d19f
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh 48bd54594752d5be3337f12c72f28d2080cb630b
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P dd9a26ecdeaef7b0b9cbf4ff70448ab13a276b4e
-R 37fd8f25666e5cc61c467cdb94b7bb71
+P 0f5b147d1fe83c34d0fbeacc7422be94d8441bc1
+R 62a6359affd853c29ced84c847c76120
+T *branch * infinite-with-loop-bug
+T *sym-infinite-with-loop-bug *
+T -sym-trunk *
 U drh
-Z b3bf4f06c783a2156de71d3cb1963976
+Z 3b853d83f7a6a14368bd6ec3d809b3a9

manifest.uuid

@@ -1 +1 @@
-0f5b147d1fe83c34d0fbeacc7422be94d8441bc1
+2040d88e877bdb69de125a047cefb4a1558e89e8

src/select.c

@@ -3972,7 +3972,7 @@ static int convertCompoundSelectToSubquery(Walker *pWalker, Select *p){
 ** object that the returned CTE belongs to.
 */
 static struct Cte *searchWith(
-  With *pWith,                    /* Current outermost WITH clause */
+  With *pWith,                    /* Current innermost WITH clause */
   struct SrcList_item *pItem,     /* FROM clause element to resolve */
   With **ppContext                /* OUT: WITH clause return value belongs to */
 ){
@@ -4005,6 +4005,7 @@ static struct Cte *searchWith(
 void sqlite3WithPush(Parse *pParse, With *pWith, u8 bFree){
   assert( bFree==0 || pParse->pWith==0 );
   if( pWith ){
+    assert( pParse->pWith!=pWith );
     pWith->pOuter = pParse->pWith;
     pParse->pWith = pWith;
     pParse->bFreeWith = bFree;

src/sqliteInt.h

@@ -3271,6 +3271,7 @@ char *sqlite3VMPrintf(sqlite3*,const char*, va_list);
   void sqlite3TreeViewExpr(TreeView*, const Expr*, u8);
   void sqlite3TreeViewExprList(TreeView*, const ExprList*, u8, const char*);
   void sqlite3TreeViewSelect(TreeView*, const Select*, u8);
+  void sqlite3TreeViewWith(TreeView*, const With*, u8);
 #endif
 
 

src/treeview.c

@@ -79,6 +79,45 @@ static void sqlite3TreeViewItem(TreeView *p, const char *zLabel,u8 moreFollows){
   sqlite3TreeViewLine(p, "%s", zLabel);
 }
 
+/*
+** Generate a human-readable description of a WITH clause.
+*/
+void sqlite3TreeViewWith(TreeView *pView, const With *pWith, u8 moreToFollow){
+  int i;
+  if( pWith==0 ) return;
+  if( pWith->nCte==0 ) return;
+  if( pWith->pOuter ){
+    sqlite3TreeViewLine(pView, "WITH (0x%p, pOuter=0x%p)",pWith,pWith->pOuter);
+  }else{
+    sqlite3TreeViewLine(pView, "WITH (0x%p)", pWith);
+  }
+  if( pWith->nCte>0 ){
+    pView = sqlite3TreeViewPush(pView, 1);
+    for(i=0; i<pWith->nCte; i++){
+      StrAccum x;
+      char zLine[1000];
+      const struct Cte *pCte = &pWith->a[i];
+      sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0);
+      sqlite3XPrintf(&x, 0, "%s", pCte->zName);
+      if( pCte->pCols && pCte->pCols->nExpr>0 ){
+        char cSep = '(';
+        int j;
+        for(j=0; j<pCte->pCols->nExpr; j++){
+          sqlite3XPrintf(&x, 0, "%c%s", cSep, pCte->pCols->a[j].zName);
+          cSep = ',';
+        }
+        sqlite3XPrintf(&x, 0, ")");
+      }
+      sqlite3XPrintf(&x, 0, " AS");
+      sqlite3StrAccumFinish(&x);
+      sqlite3TreeViewItem(pView, zLine, i<pWith->nCte-1);
+      sqlite3TreeViewSelect(pView, pCte->pSelect, 0);
+      sqlite3TreeViewPop(pView);
+    }
+    sqlite3TreeViewPop(pView);
+  }
+}
+
 
 /*
 ** Generate a human-readable description of a the Select object.
@@ -87,6 +126,11 @@ void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 moreToFollow){
   int n = 0;
   int cnt = 0;
   pView = sqlite3TreeViewPush(pView, moreToFollow);
+  if( p->pWith ){
+    sqlite3TreeViewWith(pView, p->pWith, 1);
+    cnt = 1;
+    sqlite3TreeViewPush(pView, 1);
+  }
   do{
     sqlite3TreeViewLine(pView, "SELECT%s%s (0x%p) selFlags=0x%x",
       ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""),