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Changes to reduce the heap space consumed by triggers, views and tables in the in-memory representation of the schema. Also to reduce the space used by prepared statements slightly. (CVS 6305)

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FossilOrigin-Name: d9f6ffbc5ea090ba0daac571fc9a6c68b9c864e4
This commit is contained in:
danielk1977
2009-02-19 14:39:25 +00:00
parent 076d4661a6
commit 6ab3a2ec8a
27 changed files with 664 additions and 366 deletions
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24
src/parse.y
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@@ -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 1.268 2009/01/29 19:27:47 drh Exp $
** @(#) $Id: parse.y,v 1.269 2009/02/19 14:39:25 danielk1977 Exp $
*/
// All token codes are small integers with #defines that begin with "TK_"
@@ -824,7 +824,7 @@ expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] {
pList = sqlite3ExprListAppend(pParse,pList, Y, 0);
A = sqlite3PExpr(pParse, TK_BETWEEN, W, 0, 0);
if( A ){
A->pList = pList;
A->x.pList = pList;
}else{
sqlite3ExprListDelete(pParse->db, pList);
}
@@ -838,7 +838,7 @@ expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] {
expr(A) ::= expr(X) in_op(N) LP exprlist(Y) RP(E). [IN] {
A = sqlite3PExpr(pParse, TK_IN, X, 0, 0);
if( A ){
A->pList = Y;
A->x.pList = Y;
sqlite3ExprSetHeight(pParse, A);
}else{
sqlite3ExprListDelete(pParse->db, Y);
@@ -849,7 +849,8 @@ expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] {
expr(A) ::= LP(B) select(X) RP(E). {
A = sqlite3PExpr(pParse, TK_SELECT, 0, 0, 0);
if( A ){
A->pSelect = X;
A->x.pSelect = X;
ExprSetProperty(A, EP_xIsSelect);
sqlite3ExprSetHeight(pParse, A);
}else{
sqlite3SelectDelete(pParse->db, X);
@@ -859,7 +860,8 @@ expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] {
expr(A) ::= expr(X) in_op(N) LP select(Y) RP(E). [IN] {
A = sqlite3PExpr(pParse, TK_IN, X, 0, 0);
if( A ){
A->pSelect = Y;
A->x.pSelect = Y;
ExprSetProperty(A, EP_xIsSelect);
sqlite3ExprSetHeight(pParse, A);
}else{
sqlite3SelectDelete(pParse->db, Y);
@@ -871,7 +873,8 @@ expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] {
SrcList *pSrc = sqlite3SrcListAppend(pParse->db, 0,&Y,&Z);
A = sqlite3PExpr(pParse, TK_IN, X, 0, 0);
if( A ){
A->pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0,0);
A->x.pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0,0);
ExprSetProperty(A, EP_xIsSelect);
sqlite3ExprSetHeight(pParse, A);
}else{
sqlite3SrcListDelete(pParse->db, pSrc);
@@ -882,7 +885,8 @@ expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] {
expr(A) ::= EXISTS(B) LP select(Y) RP(E). {
Expr *p = A = sqlite3PExpr(pParse, TK_EXISTS, 0, 0, 0);
if( p ){
p->pSelect = Y;
p->x.pSelect = Y;
ExprSetProperty(A, EP_xIsSelect);
sqlite3ExprSpan(p,&B,&E);
sqlite3ExprSetHeight(pParse, A);
}else{
@@ -895,7 +899,7 @@ expr(A) ::= expr(W) between_op(N) expr(X) AND expr(Y). [BETWEEN] {
expr(A) ::= CASE(C) case_operand(X) case_exprlist(Y) case_else(Z) END(E). {
A = sqlite3PExpr(pParse, TK_CASE, X, Z, 0);
if( A ){
A->pList = Y;
A->x.pList = Y;
sqlite3ExprSetHeight(pParse, A);
}else{
sqlite3ExprListDelete(pParse->db, Y);
@@ -1100,14 +1104,14 @@ trigger_cmd(A) ::= select(X). {A = sqlite3TriggerSelectStep(pParse->db, X); }
expr(A) ::= RAISE(X) LP IGNORE RP(Y). {
A = sqlite3PExpr(pParse, TK_RAISE, 0, 0, 0);
if( A ){
A->iColumn = OE_Ignore;
A->affinity = OE_Ignore;
sqlite3ExprSpan(A, &X, &Y);
}
}
expr(A) ::= RAISE(X) LP raisetype(T) COMMA nm(Z) RP(Y). {
A = sqlite3PExpr(pParse, TK_RAISE, 0, 0, &Z);
if( A ) {
A->iColumn = T;
A->affinity = T;
sqlite3ExprSpan(A, &X, &Y);
}
}