From: drh <drh@noemail.net>
Date: Fri, 5 Nov 2004 05:10:28 +0000 (+0000)
Subject: More use of sqlite3NestedParse.  This version of the code does not work. (CVS 2060)
X-Git-Tag: version-3.6.10~4090
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4e0cff6080890479afb9e418f6edebf45be35e36;p=thirdparty%2Fsqlite.git

More use of sqlite3NestedParse.  This version of the code does not work. (CVS 2060)

FossilOrigin-Name: ac2d5a605c873cac68bfde4bbe3797608a47b21e
---

diff --git a/manifest b/manifest
index 65924a9014..74bc8de275 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Begin\susing\ssqlite3NestedParse()\sto\sgenerate\ssections\sof\scode.\s(CVS\s2059)
-D 2004-11-05T03:56:01
+C More\suse\sof\ssqlite3NestedParse.\s\sThis\sversion\sof\sthe\scode\sdoes\snot\swork.\s(CVS\s2060)
+D 2004-11-05T05:10:29
 F Makefile.in c4d2416860f472a1e3393714d0372074197565df
 F Makefile.linux-gcc a9e5a0d309fa7c38e7c14d3ecf7690879d3a5457
 F README a01693e454a00cc117967e3f9fdab2d4d52e9bc1
@@ -31,10 +31,10 @@ F src/attach.c e49d09dad9f5f9fb10b4b0c1be5a70ae4c45e689
 F src/auth.c 3b81f2a42f48a62c2c9c9b0eda31a157c681edea
 F src/btree.c f97b5a3919147fe36f776d08c80212ba3ea883aa
 F src/btree.h 3166388fa58c5594d8064d38b43440d79da38fb6
-F src/build.c b18a5c7cc68fe77fd6cc30f6bbeefc3ece909108
+F src/build.c 936fb262f26c5b06e7f46ee40778c8d22015bd73
 F src/date.c 34bdb0082db7ec2a83ef00063f7b44e61ee19dad
 F src/delete.c 832adc6fe1c07b7e28e1b4c1038d2b06f7397dd4
-F src/expr.c 3a43e508a3dc213703808bbcbb17633b88b57d17
+F src/expr.c be18081d2959a2cc53846d0fbedfec40fbfa1d6e
 F src/func.c 600e506bccf7648df8ad03efb417560d0f7ad4c1
 F src/hash.c a97721a55440b7bea31ffe471bb2f6b4123cddd5
 F src/hash.h 1b0c445e1c89ff2aaad9b4605ba61375af001e84
@@ -54,14 +54,14 @@ F src/os_win.c 9482dfc92f289b68205bb2c9315757c7e3946bfb
 F src/os_win.h 41a946bea10f61c158ce8645e7646b29d44f122b
 F src/pager.c a43e2a392be51966129e9afb18b81551c9f222b8
 F src/pager.h cbe4ba356d9dd3f30260f322b3dc77408164df14
-F src/parse.y e7f4e87a2ad14ccf5b8adcf1019fb8a355964579
+F src/parse.y 97247c0a89ca1667729db5035f1ee60140960984
 F src/pragma.c 44e192eb5928157bdb015926f858a7c6e3ef6c98
 F src/printf.c 7a92adc00b758cd5ce087dae80181a8bbdb70ed2
 F src/random.c eff68e3f257e05e81eae6c4d50a51eb88beb4ff3
 F src/select.c 156990c636102bb6b8de85e7ff3396a62568476b
 F src/shell.c 55adda3cf3c1cc2f6c1919aac17b2318f9c2a96f
 F src/sqlite.h.in 4f97b5907acfd2a5068cb0cec9d5178816734db7
-F src/sqliteInt.h 83d4ad5c75b50bad5c7c1573827231c148335ae6
+F src/sqliteInt.h 14b36d195ad418fc3d390e36a59ec0e3d0a1bdc7
 F src/table.c 25b3ff2b39b7d87e8d4a5da0713d68dfc06cbee9
 F src/tclsqlite.c 0302e3f42f015d132d1291f3388c06e86c24a008
 F src/test1.c df1d1ca2c40cafefb9a29860f072c4d0fee1a7b5
@@ -69,7 +69,7 @@ F src/test2.c b11fa244fff02190707dd0879987c37c75e61fc8
 F src/test3.c de9edf178c02707cd37fd80b54e4c2ea77251cc0
 F src/test4.c 7c6b9fc33dd1f3f93c7f1ee6e5e6d016afa6c1df
 F src/test5.c b001fa7f1b9e2dc5c2331de62fc641b5ab2bd7a1
-F src/tokenize.c bf9de9689b3bb813d65784bf54472804bf9595e6
+F src/tokenize.c c48221284e729be067237a8cfd7848fb62ee4a92
 F src/trigger.c f9a0a8d3a87238de1a934eeb7d0b6b1f13e6a55b
 F src/update.c 7b17b281d600bf3e220b3c5718e0883442dee722
 F src/utf.c f4f83acd73389090e32d6589d307fc55d794c7ed
@@ -84,8 +84,8 @@ F src/vdbemem.c ef9ac7d32acfe4bce5c5b408b1294c8d9e0cdb56
 F src/where.c 6e637a6b3e61fe3104adc4e5caa4738bf6570daa
 F test/all.test 929bfa932b55e75c96fe2203f7650ba451c1862c
 F test/attach.test e305dd59a375e37c658c6d401f19f8a95880bf9a
-F test/attach2.test 48a802ed9c009bcc36ad62646680a55c18403b3e
-F test/attach3.test 742c932d7130e0e699a5d9f265cb831e0a824633
+F test/attach2.test 399128a7b3b209a339a8dbf53ca2ed42eb982d1a
+F test/attach3.test 4a22dd620a346fe3d8189c05d8e2c55541402915
 F test/auth.test 1cc252d9e7b3bdc1314199cbf3a0d3c5ed026c21
 F test/autovacuum.test a5b11269daac313bea6694b04473fdd0e16e439a
 F test/bigfile.test d3744a8821ce9abb8697f2826a3e3d22b719e89f
@@ -252,7 +252,7 @@ F www/tclsqlite.tcl 560ecd6a916b320e59f2917317398f3d59b7cc25
 F www/vdbe.tcl 59288db1ac5c0616296b26dce071c36cb611dfe9
 F www/version3.tcl 092a01f5ef430d2c4acc0ae558d74c4bb89638a0
 F www/whentouse.tcl fdacb0ba2d39831e8a6240d05a490026ad4c4e4c
-P aed2e623ec9c4044696dc2d6f7f4c53216b45479
-R f11ae296f2dfdf96c95c6e6b63836396
+P 2d302931a69d1add1dae9f820133872b4fefe93e
+R 9d8077c20528ce9bd12b7dfa2968a7b4
 U drh
-Z 443581b69da31601ae9d30cf00bb19d1
+Z 772277e47e3b8f9b2ce58ca939573a56
diff --git a/manifest.uuid b/manifest.uuid
index 2fa8aae4e2..e7c46a0e81 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-2d302931a69d1add1dae9f820133872b4fefe93e
\ No newline at end of file
+ac2d5a605c873cac68bfde4bbe3797608a47b21e
\ No newline at end of file
diff --git a/src/build.c b/src/build.c
index 86b542b883..7bc36fe45a 100644
--- a/src/build.c
+++ b/src/build.c
@@ -24,9 +24,9 @@
 **     PRAGMA
 **
 <<<<<<< build.c
-** $Id: build.c,v 1.263 2004/11/05 03:56:02 drh Exp $
+** $Id: build.c,v 1.264 2004/11/05 05:10:29 drh Exp $
 =======
-** $Id: build.c,v 1.263 2004/11/05 03:56:02 drh Exp $
+** $Id: build.c,v 1.264 2004/11/05 05:10:29 drh Exp $
 >>>>>>> 1.262
 */
 #include "sqliteInt.h"
@@ -1635,52 +1635,20 @@ void sqlite3RootPageMoved(Db *pDb, int iFrom, int iTo){
 ** if a root-page of another table is moved by the btree-layer whilst
 ** erasing iTable (this can happen with an auto-vacuum database).
 */ 
-static void destroyRootPage(Vdbe *v, int iTable, int iDb){
-#ifndef SQLITE_OMIT_AUTOVACUUM
-  int base;
-  /* If SQLITE_OMIT_AUTOVACUUM is not defined, then OP_Destroy pushes
-  ** an integer onto the stack. If this integer is non-zero, then it is
-  ** the root page number of a table moved to location iTable. The 
-  ** following writes VDBE code to modify the sqlite_master table to
-  ** reflect this. It is assumed that cursor number 0 is a write-cursor
-  ** opened on the sqlite_master table.
-  */
-  static /*const*/ VdbeOpList updateMaster[] = {
-    /* If the Op_Destroy pushed a 0 onto the stack, then skip the following
-    ** code. sqlite_master does not need updating in this case.
-    */
-    { OP_Dup,        0, 0,        0},
-    { OP_Integer,    0, 0,        0},
-    { OP_Eq,         0, ADDR(17), 0},
-
-    /* Search for the sqlite_master row containing root-page iTable. */
-    { OP_Rewind,     0, ADDR(8), 0}, 
-    { OP_Dup,        0, 0,       0}, /* 4 */
-    { OP_Column,     0, 3,       0}, /* 5 */
-    { OP_Eq,         0, ADDR(9), 0},
-    { OP_Next,       0, ADDR(4), 0},
-    { OP_Halt,       SQLITE_CORRUPT, OE_Fail, 0}, /* 8 */
-    { OP_Recno,      0, 0,       0}, /* 9 */
-
-    /* Cursor 0 now points at the row that will be updated. The top of
-    ** the stack is the rowid of that row. The next value on the stack is 
-    ** the new value for the root-page field.
-    */
-    { OP_Column,     0, 0,       0}, /* 10 */
-    { OP_Column,     0, 1,       0},
-    { OP_Column,     0, 2,       0},
-    { OP_Integer,    4, 0,       0}, /* 13 */
-    { OP_Column,     0, 4,       0},
-    { OP_MakeRecord, 5, 0,       0},
-    { OP_PutIntKey,  0, 0,       0}  /* 16 */
-  };
-#endif
-
+static void destroyRootPage(Parse *pParse, int iTable, int iDb){
+  Vdbe *v = sqlite3GetVdbe(pParse);
   sqlite3VdbeAddOp(v, OP_Destroy, iTable, iDb);
-  /* sqlite3VdbeAddOp(v, OP_Pop, 1, 0); */
 #ifndef SQLITE_OMIT_AUTOVACUUM
-  base = sqlite3VdbeAddOpList(v, ArraySize(updateMaster), updateMaster);
-  sqlite3VdbeChangeP1(v, base+13, iTable);
+  /* OP_Destroy pushes an integer onto the stack. If this integer
+  ** is non-zero, then it is the root page number of a table moved to
+  ** location iTable. The following code modifis the sqlite_master table to
+  ** reflect this.
+  **
+  ** The "#0" in the SQL is a special constant that means whatever value
+  ** is on the top of the stack.  See sqlite3RegisterExpr().
+  */
+  sqlite3NestedParse(pParse, "UPDATE %Q.%Q SET rootpage=#0 WHERE rootpage=%d",
+     pParse->db->aDb[iDb].zName, SCHEMA_TABLE(iDb), iTable);
 #endif
 }
 
@@ -1690,9 +1658,10 @@ static void destroyRootPage(Vdbe *v, int iTable, int iDb){
 ** in case a root-page belonging to another table is moved by the btree layer
 ** is also added (this can happen with an auto-vacuum database).
 */
-static void destroyTable(Vdbe *v, Table *pTab){
+static void destroyTable(Parse *pParse, Table *pTab){
+  Vdbe *v = pParse->pVdbe;
 #ifdef SQLITE_OMIT_AUTOVACUUM
-  destroyRootPage(v, pTab->tnum, pTab->iDb);
+  destroyRootPage(pParse, pTab->tnum, pTab->iDb);
   for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
     destroyRootPage(v, pIdx->tnum, pIdx->iDb);
   }
@@ -1731,7 +1700,7 @@ static void destroyTable(Vdbe *v, Table *pTab){
       }
     }
     if( iLargest==0 ) return;
-    destroyRootPage(v, iLargest, pTab->iDb);
+    destroyRootPage(pParse, iLargest, pTab->iDb);
     iDestroyed = iLargest;
   }
 #endif
@@ -1827,7 +1796,7 @@ void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView){
         "DELETE FROM %Q.%Q WHERE tbl_name=%Q and type!='trigger'",
         db->aDb[pTab->iDb].zName, SCHEMA_TABLE(pTab->iDb), pTab->zName);
     if( !isView ){
-      destroyTable(v, pTab);
+      destroyTable(pParse, pTab);
     }
     sqlite3VdbeOp3(v, OP_DropTable, pTab->iDb, 0, pTab->zName, 0);
   }
diff --git a/src/expr.c b/src/expr.c
index daf7dc4929..8eec92c646 100644
--- a/src/expr.c
+++ b/src/expr.c
@@ -12,7 +12,7 @@
 ** This file contains routines used for analyzing expressions and
 ** for generating VDBE code that evaluates expressions in SQLite.
 **
-** $Id: expr.c,v 1.167 2004/10/31 02:22:49 drh Exp $
+** $Id: expr.c,v 1.168 2004/11/05 05:10:29 drh Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -198,6 +198,34 @@ Expr *sqlite3Expr(int op, Expr *pLeft, Expr *pRight, Token *pToken){
   return pNew;
 }
 
+/*
+** When doing a nested parse, you can include terms in an expression
+** that look like this:   #0 #1 #2 ...  These terms refer to elements
+** on the stack.  "#0" (or just "#") means the top of the stack.
+** "#1" means the next down on the stack.  And so forth.
+**
+** This routine is called by the parser to deal with on of those terms.
+** It immediately generates code to store the value in a memory location.
+** The returns an expression that will code to extract the value from
+** that memory location as needed.
+*/
+Expr *sqlite3RegisterExpr(Parse *pParse, Token *pToken){
+  Vdbe *v = pParse->pVdbe;
+  Expr *p;
+  int depth;
+  if( v==0 ) return 0;
+  if( pParse->nested==0 ){
+    sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", pToken);
+    return 0;
+  }
+  p = sqlite3Expr(TK_REGISTER, 0, 0, pToken);
+  depth = atoi(&pToken->z[1]);
+  p->iTable = pParse->nMem++;
+  sqlite3VdbeAddOp(v, OP_Dup, depth, 0);
+  sqlite3VdbeAddOp(v, OP_MemStore, p->iTable, 1);
+  return p;
+}
+
 /*
 ** Join two expressions using an AND operator.  If either expression is
 ** NULL, then just return the other expression.
@@ -1239,6 +1267,10 @@ void sqlite3ExprCode(Parse *pParse, Expr *pExpr){
       }
       break;
     }
+    case TK_REGISTER: {
+      sqlite3VdbeAddOp(v, OP_MemLoad, pExpr->iTable, 0);
+      break;
+    }
     case TK_LT:
     case TK_LE:
     case TK_GT:
diff --git a/src/parse.y b/src/parse.y
index 90e4b1394f..f9990525dd 100644
--- a/src/parse.y
+++ b/src/parse.y
@@ -14,7 +14,7 @@
 ** the parser.  Lemon will also generate a header file containing
 ** numeric codes for all of the tokens.
 **
-** @(#) $Id: parse.y,v 1.148 2004/11/05 00:43:12 drh Exp $
+** @(#) $Id: parse.y,v 1.149 2004/11/05 05:10:29 drh Exp $
 */
 %token_prefix TK_
 %token_type {Token}
@@ -588,6 +588,7 @@ expr(A) ::= INTEGER(X).      {A = sqlite3Expr(@X, 0, 0, &X);}
 expr(A) ::= FLOAT(X).        {A = sqlite3Expr(@X, 0, 0, &X);}
 expr(A) ::= STRING(X).       {A = sqlite3Expr(@X, 0, 0, &X);}
 expr(A) ::= BLOB(X).         {A = sqlite3Expr(@X, 0, 0, &X);}
+expr(A) ::= REGISTER(X).     {A = sqlite3RegisterExpr(pParse, &X);}
 expr(A) ::= VARIABLE(X).     {
   Token *pToken = &X;
   Expr *pExpr = A = sqlite3Expr(TK_VARIABLE, 0, 0, pToken);
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index b65412e993..f7a51aa522 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.332 2004/11/05 03:56:02 drh Exp $
+** @(#) $Id: sqliteInt.h,v 1.333 2004/11/05 05:10:29 drh Exp $
 */
 #ifndef _SQLITEINT_H_
 #define _SQLITEINT_H_
@@ -1254,6 +1254,7 @@ int sqlite3KeywordCode(const char*, int);
 int sqlite3RunParser(Parse*, const char*, char **);
 void sqlite3FinishCoding(Parse*);
 Expr *sqlite3Expr(int, Expr*, Expr*, Token*);
+Expr *sqlite3RegisterExpr(Parse*,Token*);
 Expr *sqlite3ExprAnd(Expr*, Expr*);
 void sqlite3ExprSpan(Expr*,Token*,Token*);
 Expr *sqlite3ExprFunction(ExprList*, Token*);
diff --git a/src/tokenize.c b/src/tokenize.c
index ff2d3d2f51..46dcc76338 100644
--- a/src/tokenize.c
+++ b/src/tokenize.c
@@ -15,7 +15,7 @@
 ** individual tokens and sends those tokens one-by-one over to the
 ** parser for analysis.
 **
-** $Id: tokenize.c,v 1.94 2004/11/03 03:59:58 drh Exp $
+** $Id: tokenize.c,v 1.95 2004/11/05 05:10:29 drh Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -177,6 +177,11 @@ static int sqliteGetToken(const unsigned char *z, int *tokenType){
       *tokenType = TK_BITNOT;
       return 1;
     }
+    case '#': {
+      for(i=1; isdigit(z[i]); i++){}
+      *tokenType = TK_REGISTER;
+      return i;
+    }
     case '\'': case '"': {
       int delim = z[0];
       for(i=1; (c=z[i])!=0; i++){
diff --git a/test/attach2.test b/test/attach2.test
index 9f4b8f96f1..e62eca9195 100644
--- a/test/attach2.test
+++ b/test/attach2.test
@@ -12,7 +12,7 @@
 # focus of this script is testing the ATTACH and DETACH commands
 # and related functionality.
 #
-# $Id: attach2.test,v 1.28 2004/11/05 03:56:02 drh Exp $
+# $Id: attach2.test,v 1.29 2004/11/05 05:10:29 drh Exp $
 #
 
 set testdir [file dirname $argv0]
@@ -325,7 +325,6 @@ do_test attach2-5.2 {
 do_test attach2-5.3 {
   lsort [glob test.db*]
 } {test.db test.db2}
-execsql {pragma vdbe_trace=on}
 do_test attach2-5.4 {
   execsql {
     BEGIN;
diff --git a/test/attach3.test b/test/attach3.test
index cc310164af..8075377dc5 100644
--- a/test/attach3.test
+++ b/test/attach3.test
@@ -12,7 +12,7 @@
 # focus of this script is testing the ATTACH and DETACH commands
 # and schema changes to attached databases.
 #
-# $Id: attach3.test,v 1.10 2004/11/04 04:42:28 drh Exp $
+# $Id: attach3.test,v 1.11 2004/11/05 05:10:29 drh Exp $
 #
 
 
@@ -27,6 +27,7 @@ execsql {
 
 # Create tables t1 and t2 in database file test2.db
 file delete -force test2.db
+file delete -force test2.db-journal
 sqlite3 db2 test2.db
 execsql {
   CREATE TABLE t1(a, b);
@@ -68,9 +69,6 @@ do_test attach3-2.1 {
     CREATE INDEX aux.i1 on t3(e);
   }
 } {}
-execsql {
-  pragma vdbe_trace = off;
-}
 do_test attach3-2.2 {
   execsql {
     SELECT * FROM sqlite_master WHERE name = 'i1';