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Overview
| Comment: | Use ALWAYS and NEVER macros on unchangeable conditions within func.c. (CVS 6435) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
eb65e64e7ed5edbe506365971d4d81ea |
| User & Date: | drh 2009-04-02 13:36:37 |
Context
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2009-04-02
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| 14:05 | Change the way that the random() SQL function prevents the maximum negative integer so that it is testable. (CVS 6436) check-in: 995f2b9b user: drh tags: trunk | |
| 13:36 | Use ALWAYS and NEVER macros on unchangeable conditions within func.c. (CVS 6435) check-in: eb65e64e user: drh tags: trunk | |
| 10:16 | In the built-in SQL function implementations, improve some comments, fix an off-by-one error in detecting over-size strings, and add testcase() macros to verify that boundary values have been tested. (CVS 6434) check-in: 868a487f user: drh tags: trunk | |
Changes
Changes to src/func.c.
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** This file contains the C functions that implement various SQL ** functions of SQLite. ** ** There is only one exported symbol in this file - the function ** sqliteRegisterBuildinFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: func.c,v 1.228 2009/04/02 10:16:18 drh Exp $ */ #include "sqliteInt.h" #include <stdlib.h> #include <assert.h> #include "vdbeInt.h" /* ................................................................................ sqlite3VdbeMemCopy(pBest, pArg); } } static void minMaxFinalize(sqlite3_context *context){ sqlite3_value *pRes; pRes = (sqlite3_value *)sqlite3_aggregate_context(context, 0); if( pRes ){ if( pRes->flags ){ sqlite3_result_value(context, pRes); } sqlite3VdbeMemRelease(pRes); } } /* ................................................................................ /* ** Set the LIKEOPT flag on the 2-argument function with the given name. */ static void setLikeOptFlag(sqlite3 *db, const char *zName, u8 flagVal){ FuncDef *pDef; pDef = sqlite3FindFunction(db, zName, sqlite3Strlen30(zName), 2, SQLITE_UTF8, 0); if( pDef ){ pDef->flags = flagVal; } } /* ** Register the built-in LIKE and GLOB functions. The caseSensitive ** parameter determines whether or not the LIKE operator is case ................................................................................ || pExpr->x.pList->nExpr!=2 ){ return 0; } assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); pDef = sqlite3FindFunction(db, (char*)pExpr->token.z, pExpr->token.n, 2, SQLITE_UTF8, 0); if( pDef==0 || (pDef->flags & SQLITE_FUNC_LIKE)==0 ){ return 0; } /* The memcpy() statement assumes that the wildcard characters are ** the first three statements in the compareInfo structure. The ** asserts() that follow verify that assumption */ |
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** This file contains the C functions that implement various SQL ** functions of SQLite. ** ** There is only one exported symbol in this file - the function ** sqliteRegisterBuildinFunctions() found at the bottom of the file. ** All other code has file scope. ** ** $Id: func.c,v 1.229 2009/04/02 13:36:37 drh Exp $ */ #include "sqliteInt.h" #include <stdlib.h> #include <assert.h> #include "vdbeInt.h" /* ................................................................................ sqlite3VdbeMemCopy(pBest, pArg); } } static void minMaxFinalize(sqlite3_context *context){ sqlite3_value *pRes; pRes = (sqlite3_value *)sqlite3_aggregate_context(context, 0); if( pRes ){ if( ALWAYS(pRes->flags) ){ sqlite3_result_value(context, pRes); } sqlite3VdbeMemRelease(pRes); } } /* ................................................................................ /* ** Set the LIKEOPT flag on the 2-argument function with the given name. */ static void setLikeOptFlag(sqlite3 *db, const char *zName, u8 flagVal){ FuncDef *pDef; pDef = sqlite3FindFunction(db, zName, sqlite3Strlen30(zName), 2, SQLITE_UTF8, 0); if( ALWAYS(pDef) ){ pDef->flags = flagVal; } } /* ** Register the built-in LIKE and GLOB functions. The caseSensitive ** parameter determines whether or not the LIKE operator is case ................................................................................ || pExpr->x.pList->nExpr!=2 ){ return 0; } assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); pDef = sqlite3FindFunction(db, (char*)pExpr->token.z, pExpr->token.n, 2, SQLITE_UTF8, 0); if( NEVER(pDef==0) || (pDef->flags & SQLITE_FUNC_LIKE)==0 ){ return 0; } /* The memcpy() statement assumes that the wildcard characters are ** the first three statements in the compareInfo structure. The ** asserts() that follow verify that assumption */ |