Very minor improvement to the performance and reduction in size to the

parser by capturing the name and datatype of table columns in a single
grammar rule reduction.

FossilOrigin-Name: 4b55c520f554163edc174e5995e66242f169cb04

manifest

@@ -1,5 +1,5 @@
-C Eliminate\sthe\sneed\sfor\sthe\sColumn.zDflt\s(using\sColumn.pDflt\sinstead)\sto\sreduce\nthe\samount\sof\smemory\sneeded\sto\shold\sthe\sschema.
-D 2016-02-27T21:16:04.996
+C Very\sminor\simprovement\sto\sthe\sperformance\sand\sreduction\sin\ssize\sto\sthe\nparser\sby\scapturing\sthe\sname\sand\sdatatype\sof\stable\scolumns\sin\sa\ssingle\ngrammar\srule\sreduction.
+D 2016-02-29T13:44:38.497
 F Makefile.in 4e90dc1521879022aa9479268a4cd141d1771142
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc 4f319afb7c049d40aff7af6e8c4e7cc2ba18e079
@@ -295,7 +295,7 @@ F src/btmutex.c bc87dd3b062cc26edfe79918de2200ccb8d41e73
 F src/btree.c 7bb920c473c277380fcb3e8a8ee28ce1a48e0abc
 F src/btree.h a5008b9afe56e8e54ade6c436a910f112defcca9
 F src/btreeInt.h c18b7d2a3494695133e4e60ee36061d37f45d9a5
-F src/build.c 6854e717e3257957b1bd87aadd6371d63937a023
+F src/build.c 5a3e2c884c7fd30f1cc46424fc1f816cc1218f5d
 F src/callback.c 2e76147783386374bf01b227f752c81ec872d730
 F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
 F src/ctime.c 60e135af364d777a9ab41c97e5e89cd224da6198
@@ -338,7 +338,7 @@ F src/os_win.c f0d7aa603eb6262143d7169a222aea07c4fca91d
 F src/os_win.h eb7a47aa17b26b77eb97e4823f20a00b8bda12ca
 F src/pager.c d034c69b958c01289eb8070cbf902e1a68cd7e0b
 F src/pager.h e1d38a2f14849e219df0f91f8323504d134c8a56
-F src/parse.y c3ce2c4a7cbf0b699239be6b2a945c5cb51875e2
+F src/parse.y 5ea8c81c5c41b27887f41b4a7e1c58470d7d3821
 F src/pcache.c 647bb53a86b7bbcf55ad88089b3ea5a9170b90df
 F src/pcache.h 4d0ccaad264d360981ec5e6a2b596d6e85242545
 F src/pcache1.c 72f644dc9e1468c72922eff5904048427b817051
@@ -354,7 +354,7 @@ F src/shell.c 5e0ab1e708dc294330ccd8230536e1801f60822e
 F src/sqlite.h.in 57d2a02b14c9ec4f7cb294153eaf62294dc5aa68
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h dfbe62ffd95b99afe2140d8c35b180d11924072d
-F src/sqliteInt.h bcfbf4785436f318459cdbde07a8cce3de7e6f1a
+F src/sqliteInt.h 01b43972162c2b5ed864060a23502af3abe0e4f4
 F src/sqliteLimit.h 216557999cb45f2e3578ed53ebefe228d779cb46
 F src/status.c 70912d7be68e9e2dbc4010c93d344af61d4c59ba
 F src/table.c 5226df15ab9179b9ed558d89575ea0ce37b03fc9
@@ -1451,7 +1451,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P f681d800340e0e710f73d0f7c09101f899249183
-R 68cf98086fc7541dd6cf15ff81e4d2e2
+P d8c94a46dfa94930732c2de2aa79675c5087d36e 519fd03b845c9b53df9e5397282df2e99f36a672
+R 4784b7c67e30974242406c3dce382bf0
+T +closed 519fd03b845c9b53df9e5397282df2e99f36a672
 U drh
-Z bde0bd56c07a366738817149aa7f9a7d
+Z 5a7ee41f15f54141d2ddaa0e30d16756

manifest.uuid

@@ -1 +1 @@
-d8c94a46dfa94930732c2de2aa79675c5087d36e
+4b55c520f554163edc174e5995e66242f169cb04

src/build.c

@@ -1038,7 +1038,7 @@ void sqlite3ColumnPropertiesFromName(Table *pTab, Column *pCol){
 ** first to get things going.  Then this routine is called for each
 ** column.
 */
-void sqlite3AddColumn(Parse *pParse, Token *pName){
+void sqlite3AddColumn(Parse *pParse, Token *pName, Token *pType){
   Table *p;
   int i;
   char *z;
@@ -1074,13 +1074,17 @@ void sqlite3AddColumn(Parse *pParse, Token *pName){
   pCol->zName = z;
   sqlite3ColumnPropertiesFromName(p, pCol);
  
-  /* If there is no type specified, columns have the default affinity
-  ** 'BLOB'. If there is a type specified, then sqlite3AddColumnType() will
-  ** be called next to set pCol->affinity correctly.
-  */
-  pCol->affinity = SQLITE_AFF_BLOB;
-  pCol->szEst = 1;
+  if( pType->n==0 ){
+    /* If there is no type specified, columns have the default affinity
+    ** 'BLOB'. */
+    pCol->affinity = SQLITE_AFF_BLOB;
+    pCol->szEst = 1;
+  }else{
+    pCol->zType = sqlite3NameFromToken(pParse->db, pType);
+    pCol->affinity = sqlite3AffinityType(pCol->zType, &pCol->szEst);
+  }
   p->nCol++;
+  pParse->constraintName.n = 0;
 }
 
 /*
@@ -1183,28 +1187,6 @@ char sqlite3AffinityType(const char *zIn, u8 *pszEst){
   return aff;
 }
 
-/*
-** This routine is called by the parser while in the middle of
-** parsing a CREATE TABLE statement.  The pFirst token is the first
-** token in the sequence of tokens that describe the type of the
-** column currently under construction.   pLast is the last token
-** in the sequence.  Use this information to construct a string
-** that contains the typename of the column and store that string
-** in zType.
-*/ 
-void sqlite3AddColumnType(Parse *pParse, Token *pType){
-  Table *p;
-  Column *pCol;
-
-  p = pParse->pNewTable;
-  if( p==0 || NEVER(p->nCol<1) ) return;
-  pCol = &p->aCol[p->nCol-1];
-  assert( pCol->zType==0 || CORRUPT_DB );
-  sqlite3DbFree(pParse->db, pCol->zType);
-  pCol->zType = sqlite3NameFromToken(pParse->db, pType);
-  pCol->affinity = sqlite3AffinityType(pCol->zType, &pCol->szEst);
-}
-
 /*
 ** The expression is the default value for the most recently added column
 ** of the table currently under construction.

src/parse.y

@@ -190,22 +190,9 @@ table_options(A) ::= WITHOUT nm(X). {
     sqlite3ErrorMsg(pParse, "unknown table option: %.*s", X.n, X.z);
   }
 }
-columnlist ::= columnlist COMMA column.
-columnlist ::= column.
-
-// A "column" is a complete description of a single column in a
-// CREATE TABLE statement.  This includes the column name, its
-// datatype, and other keywords such as PRIMARY KEY, UNIQUE, REFERENCES,
-// NOT NULL and so forth.
-//
-column(A) ::= columnid(A) type carglist. {
-  A.n = (int)(pParse->sLastToken.z-A.z) + pParse->sLastToken.n;
-}
-columnid(A) ::= nm(A). {
-  sqlite3AddColumn(pParse,&A);
-  pParse->constraintName.n = 0;
-}
-
+columnlist ::= columnlist COMMA columnname carglist.
+columnlist ::= columnname carglist.
+columnname(A) ::= nm(A) typetoken(Y). {sqlite3AddColumn(pParse,&A,&Y);}
 
 // An IDENTIFIER can be a generic identifier, or one of several
 // keywords.  Any non-standard keyword can also be an identifier.
@@ -264,13 +251,12 @@ nm(A) ::= id(A).
 nm(A) ::= STRING(A).
 nm(A) ::= JOIN_KW(A).
 
-// A typetoken is really one or more tokens that form a type name such
+// A typetoken is really zero or more tokens that form a type name such
 // as can be found after the column name in a CREATE TABLE statement.
 // Multiple tokens are concatenated to form the value of the typetoken.
 //
 %type typetoken {Token}
-type ::= .
-type ::= typetoken(X).                   {sqlite3AddColumnType(pParse,&X);}
+typetoken(A) ::= .   {A.n = 0; A.z = 0;}
 typetoken(A) ::= typename(A).
 typetoken(A) ::= typename(A) LP signed RP(Y). {
   A.n = (int)(&Y.z[Y.n] - A.z);
@@ -580,7 +566,7 @@ selcollist(A) ::= sclp(A) nm(X) DOT STAR(Y). {
 %type as {Token}
 as(X) ::= AS nm(Y).    {X = Y;}
 as(X) ::= ids(X).
-as(X) ::= .            {X.n = 0;}
+as(X) ::= .            {X.n = 0; X.z = 0;}
 
 
 %type seltablist {SrcList*}
@@ -1499,7 +1485,9 @@ cmd ::= ANALYZE nm(X) dbnm(Y).  {sqlite3Analyze(pParse, &X, &Y);}
 cmd ::= ALTER TABLE fullname(X) RENAME TO nm(Z). {
   sqlite3AlterRenameTable(pParse,X,&Z);
 }
-cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt column(Y). {
+cmd ::= ALTER TABLE add_column_fullname
+        ADD kwcolumn_opt columnname(Y) carglist. {
+  Y.n = (int)(pParse->sLastToken.z-Y.z) + pParse->sLastToken.n;
   sqlite3AlterFinishAddColumn(pParse, &Y);
 }
 add_column_fullname ::= fullname(X). {

src/sqliteInt.h

@@ -3413,11 +3413,10 @@ void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int);
 #else
 # define sqlite3ColumnPropertiesFromName(T,C) /* no-op */
 #endif
-void sqlite3AddColumn(Parse*,Token*);
+void sqlite3AddColumn(Parse*,Token*,Token*);
 void sqlite3AddNotNull(Parse*, int);
 void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int);
 void sqlite3AddCheckConstraint(Parse*, Expr*);
-void sqlite3AddColumnType(Parse*,Token*);
 void sqlite3AddDefaultValue(Parse*,ExprSpan*);
 void sqlite3AddCollateType(Parse*, Token*);
 void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*);