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Begin using sqlite3NestedParse() to generate sections of code. (CVS 2059)

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FossilOrigin-Name: 2d302931a69d1add1dae9f820133872b4fefe93e
This commit is contained in:
drh
2004-11-05 03:56:00 +00:00
parent a64a035f7e
commit f197484617
6 changed files with 69 additions and 75 deletions
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55
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.331 2004/11/05 00:43:12 drh Exp $
** @(#) $Id: sqliteInt.h,v 1.332 2004/11/05 03:56:02 drh Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_
@@ -107,6 +107,14 @@
/* #define SQLITE_OMIT_DATETIME_FUNCS 1 */
/* #define SQLITE_OMIT_PROGRESS_CALLBACK 1 */
/*
** GCC does not define the offsetof() macro so we'll have to do it
** ourselves.
*/
#ifndef offsetof
#define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD))
#endif
/*
** Integers of known sizes. These typedefs might change for architectures
** where the sizes very. Preprocessor macros are available so that the
@@ -993,42 +1001,51 @@ struct AggExpr {
** An SQL parser context. A copy of this structure is passed through
** the parser and down into all the parser action routine in order to
** carry around information that is global to the entire parse.
**
** The structure is divided into two parts. When the parser and code
** generate call themselves recursively, the first part of the structure
** is constant but the second part is reset at the beginning and end of
** each recursion.
*/
struct Parse {
sqlite3 *db; /* The main database structure */
int rc; /* Return code from execution */
char *zErrMsg; /* An error message */
Token sErrToken; /* The token at which the error occurred */
Token sNameToken; /* Token with unqualified schema object name */
Token sLastToken; /* The last token parsed */
const char *zSql; /* All SQL text */
const char *zTail; /* All SQL text past the last semicolon parsed */
Table *pNewTable; /* A table being constructed by CREATE TABLE */
Vdbe *pVdbe; /* An engine for executing database bytecode */
u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
u8 explain; /* True if the EXPLAIN flag is found on the query */
u8 nameClash; /* A permanent table name clashes with temp table name */
u8 useAgg; /* If true, extract field values from the aggregator
** while generating expressions. Normally false */
u8 checkSchema; /* Causes schema cookie check after an error */
u8 nested; /* Number of nested calls to the parser/code generator */
int nErr; /* Number of errors seen */
int nTab; /* Number of previously allocated VDBE cursors */
int nMem; /* Number of memory cells used so far */
int nSet; /* Number of sets used so far */
int nAgg; /* Number of aggregate expressions */
int nVar; /* Number of '?' variables seen in the SQL so far */
int nVarExpr; /* Number of used slots in apVarExpr[] */
int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
AggExpr *aAgg; /* An array of aggregate expressions */
const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */
Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */
TriggerStack *trigStack; /* Trigger actions being coded */
u32 cookieMask; /* Bitmask of schema verified databases */
int cookieValue[MAX_ATTACHED+2]; /* Values of cookies to verify */
int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */
u32 writeMask; /* Start a write transaction on these databases */
/* Above is constant between recursions. Below is reset before and after
** each recursion */
int nVar; /* Number of '?' variables seen in the SQL so far */
int nVarExpr; /* Number of used slots in apVarExpr[] */
int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
u8 explain; /* True if the EXPLAIN flag is found on the query */
u8 useAgg; /* If true, extract field values from the aggregator
** while generating expressions. Normally false */
int nAgg; /* Number of aggregate expressions */
AggExpr *aAgg; /* An array of aggregate expressions */
Token sErrToken; /* The token at which the error occurred */
Token sNameToken; /* Token with unqualified schema object name */
Token sLastToken; /* The last token parsed */
const char *zSql; /* All SQL text */
const char *zTail; /* All SQL text past the last semicolon parsed */
Table *pNewTable; /* A table being constructed by CREATE TABLE */
Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */
TriggerStack *trigStack; /* Trigger actions being coded */
const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */
};
/*