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Experimental implementation of sqlite3_result_subtype() and

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sqlite3_value_subtype() interfaces.

FossilOrigin-Name: 7b5be299c617a3d3ed327ed30ef0a66a62c85b1f
This commit is contained in:
drh
2015-09-10 20:34:56 +00:00
parent 0b19c96935
commit bcdf78a61c
7 changed files with 114 additions and 12 deletions
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33
src/test_func.c
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@@ -462,7 +462,7 @@ static void real2hex(
}
/*
** tclcmd: test_extract(record, field)
** test_extract(record, field)
**
** This function implements an SQL user-function that accepts a blob
** containing a formatted database record as the first argument. The
@@ -509,7 +509,7 @@ static void test_extract(
}
/*
** tclcmd: test_decode(record)
** test_decode(record)
**
** This function implements an SQL user-function that accepts a blob
** containing a formatted database record as its only argument. It returns
@@ -601,6 +601,8 @@ static void test_decode(
}
/*
** test_zeroblob(N)
**
** The implementation of scalar SQL function "test_zeroblob()". This is
** similar to the built-in zeroblob() function, except that it does not
** check that the integer parameter is within range before passing it
@@ -615,6 +617,31 @@ static void test_zeroblob(
sqlite3_result_zeroblob(context, nZero);
}
/* test_getsubtype(V)
**
** Return the subtype for value V.
*/
static void test_getsubtype(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
sqlite3_result_int(context, (int)sqlite3_value_subtype(argv[0]));
}
/* test_setsubtype(V, T)
**
** Return the value V with its subtype changed to T
*/
static void test_setsubtype(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
sqlite3_result_value(context, argv[0]);
sqlite3_result_subtype(context, (unsigned int)sqlite3_value_int(argv[1]));
}
static int registerTestFunctions(sqlite3 *db){
static const struct {
char *zName;
@@ -641,6 +668,8 @@ static int registerTestFunctions(sqlite3 *db){
{ "test_decode", 1, SQLITE_UTF8, test_decode},
{ "test_extract", 2, SQLITE_UTF8, test_extract},
{ "test_zeroblob", 1, SQLITE_UTF8|SQLITE_DETERMINISTIC, test_zeroblob},
{ "test_getsubtype", 1, SQLITE_UTF8, test_getsubtype},
{ "test_setsubtype", 2, SQLITE_UTF8, test_setsubtype},
};
int i;