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Infrastructure for the bytecode() table-valued function. The function itself

Browse Source 
is not yet implemented.

FossilOrigin-Name: 2795f0d633577e0de66b389d9e8e44c55e85975bdc62f1a0b8f93959d19b22bf
This commit is contained in:
drh
2020-03-23 15:49:22 +00:00
parent 74a07986ce
commit 691b5c54b8
10 changed files with 278 additions and 15 deletions
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12
Makefile.in
View File

@@ -190,7 +190,8 @@ LIBOBJS0 = alter.lo analyze.lo attach.lo auth.lo \
table.lo threads.lo tokenize.lo treeview.lo trigger.lo \
update.lo userauth.lo upsert.lo util.lo vacuum.lo \
vdbe.lo vdbeapi.lo vdbeaux.lo vdbeblob.lo vdbemem.lo vdbesort.lo \
vdbetrace.lo wal.lo walker.lo where.lo wherecode.lo whereexpr.lo \
vdbetrace.lo vdbetrace.lo \
wal.lo walker.lo where.lo wherecode.lo whereexpr.lo \
window.lo utf.lo vtab.lo
# Object files for the amalgamation.
@@ -296,6 +297,7 @@ SRC = \
$(TOP)/src/vdbemem.c \
$(TOP)/src/vdbesort.c \
$(TOP)/src/vdbetrace.c \
$(TOP)/src/vdbevtab.c \
$(TOP)/src/vdbeInt.h \
$(TOP)/src/vtab.c \
$(TOP)/src/vxworks.h \
@@ -502,6 +504,7 @@ TESTSRC2 = \
$(TOP)/src/vdbe.c \
$(TOP)/src/vdbemem.c \
$(TOP)/src/vdbetrace.c \
$(TOP)/src/vdbevtab.c \
$(TOP)/src/where.c \
$(TOP)/src/wherecode.c \
$(TOP)/src/whereexpr.c \
@@ -607,6 +610,7 @@ SHELL_OPT += -DSQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
SHELL_OPT += -DSQLITE_ENABLE_STMTVTAB
SHELL_OPT += -DSQLITE_ENABLE_DBPAGE_VTAB
SHELL_OPT += -DSQLITE_ENABLE_DBSTAT_VTAB
SHELL_OPT += -DSQLITE_ENABLE_BYTECODE_VTAB
SHELL_OPT += -DSQLITE_ENABLE_OFFSET_SQL_FUNC
SHELL_OPT += -DSQLITE_ENABLE_DESERIALIZE
FUZZERSHELL_OPT = -DSQLITE_ENABLE_JSON1
@@ -619,6 +623,7 @@ FUZZCHECK_OPT += -DSQLITE_ENABLE_FTS4
FUZZCHECK_OPT += -DSQLITE_ENABLE_RTREE
FUZZCHECK_OPT += -DSQLITE_ENABLE_GEOPOLY
FUZZCHECK_OPT += -DSQLITE_ENABLE_DBSTAT_VTAB
FUZZCHECK_OPT += -DSQLITE_ENABLE_BYTECODE_VTAB
FUZZCHECK_SRC = $(TOP)/test/fuzzcheck.c $(TOP)/test/ossfuzz.c
DBFUZZ_OPT =
@@ -688,6 +693,7 @@ DBFUZZ2_OPTS = \
-DSQLITE_ENABLE_DESERIALIZE \
-DSQLITE_DEBUG \
-DSQLITE_ENABLE_DBSTAT_VTAB \
-DSQLITE_ENABLE_BYTECODE_VTAB \
-DSQLITE_ENABLE_RTREE \
-DSQLITE_ENABLE_FTS4 \
-DSQLITE_ENABLE_FTS5
@@ -1004,6 +1010,9 @@ vdbesort.lo: $(TOP)/src/vdbesort.c $(HDR)
vdbetrace.lo: $(TOP)/src/vdbetrace.c $(HDR)
$(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vdbetrace.c
vdbevtab.lo: $(TOP)/src/vdbevtab.c $(HDR)
$(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vdbevtab.c
vtab.lo: $(TOP)/src/vtab.c $(HDR)
$(LTCOMPILE) $(TEMP_STORE) -c $(TOP)/src/vtab.c
@@ -1210,6 +1219,7 @@ TESTFIXTURE_FLAGS += -DSQLITE_SERIES_CONSTRAINT_VERIFY=1
TESTFIXTURE_FLAGS += -DSQLITE_DEFAULT_PAGE_SIZE=1024
TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_STMTVTAB
TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_DBPAGE_VTAB
TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_BYTECODE_VTAB
TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_DESERIALIZE
TESTFIXTURE_SRC0 = $(TESTSRC2) libsqlite3.la

7
Makefile.msc
View File

@@ -357,6 +357,7 @@ OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_JSON1=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_STMTVTAB=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_DBPAGE_VTAB=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_DBSTAT_VTAB=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_BYTECODE_VTAB=1
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_DESERIALIZE=1
!ENDIF
OPT_FEATURE_FLAGS = $(OPT_FEATURE_FLAGS) -DSQLITE_ENABLE_COLUMN_METADATA=1
@@ -1353,6 +1354,7 @@ SRC01 = \
$(TOP)\src\vdbemem.c \
$(TOP)\src\vdbesort.c \
$(TOP)\src\vdbetrace.c \
$(TOP)\src\vdbevtab.c \
$(TOP)\src\vtab.c \
$(TOP)\src\wal.c \
$(TOP)\src\walker.c \
@@ -1684,6 +1686,7 @@ FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_FTS4
FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_RTREE
FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_GEOPOLY
FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_DBSTAT_VTAB
FUZZCHECK_OPTS = $(FUZZCHECK_OPTS) -DSQLITE_ENABLE_BYTECODE_VTAB
FUZZCHECK_SRC = $(TOP)\test\fuzzcheck.c $(TOP)\test\ossfuzz.c
OSSSHELL_SRC = $(TOP)\test\ossshell.c $(TOP)\test\ossfuzz.c
@@ -2109,6 +2112,9 @@ vdbesort.lo: $(TOP)\src\vdbesort.c $(HDR)
vdbetrace.lo: $(TOP)\src\vdbetrace.c $(HDR)
$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vdbetrace.c
vdbevtab.lo: $(TOP)\src\vdbevtab.c $(HDR)
$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vdbevtab.c
vtab.lo: $(TOP)\src\vtab.c $(HDR)
$(LTCOMPILE) $(CORE_COMPILE_OPTS) -c $(TOP)\src\vtab.c
@@ -2352,6 +2358,7 @@ TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_SERIES_CONSTRAINT_VERIFY=1
TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_DEFAULT_PAGE_SIZE=1024
TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_STMTVTAB=1
TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_DBPAGE_VTAB=1
TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_BYTECODE_VTAB=1
TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_JSON1=1
TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) -DSQLITE_ENABLE_DESERIALIZE=1
TESTFIXTURE_FLAGS = $(TESTFIXTURE_FLAGS) $(TEST_CCONV_OPTS)

8
main.mk
View File

@@ -74,7 +74,8 @@ LIBOBJ+= vdbe.o parse.o \
table.o threads.o tokenize.o treeview.o trigger.o \
update.o upsert.o userauth.o util.o vacuum.o \
vdbeapi.o vdbeaux.o vdbeblob.o vdbemem.o vdbesort.o \
vdbetrace.o wal.o walker.o where.o wherecode.o whereexpr.o \
vdbetrace.o vdbevtab.o \
wal.o walker.o where.o wherecode.o whereexpr.o \
utf.o vtab.o window.o
LIBOBJ += sqlite3session.o
@@ -173,6 +174,7 @@ SRC = \
$(TOP)/src/vdbemem.c \
$(TOP)/src/vdbesort.c \
$(TOP)/src/vdbetrace.c \
$(TOP)/src/vdbevtab.c \
$(TOP)/src/vdbeInt.h \
$(TOP)/src/vtab.c \
$(TOP)/src/vxworks.h \
@@ -526,6 +528,7 @@ SHELL_OPT += -DSQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
SHELL_OPT += -DSQLITE_ENABLE_STMTVTAB
SHELL_OPT += -DSQLITE_ENABLE_DBPAGE_VTAB
SHELL_OPT += -DSQLITE_ENABLE_DBSTAT_VTAB
SHELL_OPT += -DSQLITE_ENABLE_BYTECODE_VTAB
SHELL_OPT += -DSQLITE_ENABLE_OFFSET_SQL_FUNC
FUZZERSHELL_OPT = -DSQLITE_ENABLE_JSON1
FUZZCHECK_OPT = -DSQLITE_ENABLE_JSON1 -DSQLITE_ENABLE_MEMSYS5
@@ -536,6 +539,7 @@ FUZZCHECK_OPT += -DSQLITE_ENABLE_FTS4
FUZZCHECK_OPT += -DSQLITE_ENABLE_RTREE
FUZZCHECK_OPT += -DSQLITE_ENABLE_GEOPOLY
FUZZCHECK_OPT += -DSQLITE_ENABLE_DBSTAT_VTAB
FUZZCHECK_OPT += -DSQLITE_ENABLE_BYTECODE_VTAB
DBFUZZ_OPT =
KV_OPT = -DSQLITE_THREADSAFE=0 -DSQLITE_DIRECT_OVERFLOW_READ
ST_OPT = -DSQLITE_THREADSAFE=0
@@ -586,6 +590,7 @@ DBFUZZ2_OPTS = \
-DSQLITE_ENABLE_DESERIALIZE \
-DSQLITE_DEBUG \
-DSQLITE_ENABLE_DBSTAT_VTAB \
-DSQLITE_ENABLE_BYTECODE_VTAB \
-DSQLITE_ENABLE_RTREE \
-DSQLITE_ENABLE_FTS4 \
-DSQLITE_ENABLE_FTS5
@@ -894,6 +899,7 @@ TESTFIXTURE_FLAGS += -DSQLITE_SERIES_CONSTRAINT_VERIFY=1
TESTFIXTURE_FLAGS += -DSQLITE_DEFAULT_PAGE_SIZE=1024
TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_STMTVTAB
TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_DBPAGE_VTAB
TESTFIXTURE_FLAGS += -DSQLITE_ENABLE_BYTECODE_VTAB
TESTFIXTURE_FLAGS += -DTCLSH_INIT_PROC=sqlite3TestInit
testfixture$(EXE): $(TESTSRC2) libsqlite3.a $(TESTSRC) $(TOP)/src/tclsqlite.c

28
manifest
View File

@@ -1,11 +1,11 @@
C Fix\sto\sthe\srecomputation\sof\sthe\scolUsed\sfield\sadded\sby\scheck-in\n[a9bb71ba708ba722].\s\sThis\sfixes\sticket\s[5829597ac43811e3].
D 2020-03-21T23:10:38.823
C Infrastructure\sfor\sthe\sbytecode()\stable-valued\sfunction.\s\sThe\sfunction\sitself\nis\snot\syet\simplemented.
D 2020-03-23T15:49:22.754
F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
F Makefile.in 9dfc7936f675785309b74d09202bb656732325e65df889e5aaa18cc8932e5b0c
F Makefile.in 016dc963c45b84bd4826b2a36da4d61077d55580011567af2c545cdf99bd82ea
F Makefile.linux-gcc f609543700659711fbd230eced1f01353117621dccae7b9fb70daa64236c5241
F Makefile.msc fab23c6b10cb6f06a7e9c407fc2e35cb184a6d653f1b793bda87fcee2eafa4f6
F Makefile.msc 9bbfd86c376c295915e36c21dee1be88cdb46c2f2acf44df58940b69fb25c11c
F README.md 1514a365ffca3c138e00c5cc839906108a01011a6b082bad19b09781e3aa498a
F VERSION 980d78a2ce04a1fd0ebefbaabd665f7f9186563820629ee29c6e350e96f19b52
F aclocal.m4 a5c22d164aff7ed549d53a90fa56d56955281f50
@@ -453,7 +453,7 @@ F ext/userauth/userauth.c 7f00cded7dcaa5d47f54539b290a43d2e59f4b1eb5f447545fa865
F install-sh 9d4de14ab9fb0facae2f48780b874848cbf2f895 x
F ltmain.sh 3ff0879076df340d2e23ae905484d8c15d5fdea8
F magic.txt 8273bf49ba3b0c8559cb2774495390c31fd61c60
F main.mk 7ce055f3df31a4f7d21e38f493f907c21db1f673863a573e231f55e2ab005023
F main.mk 87e0c76bbcfcf32d115c01eb8430b39d679ddadb5e8cb65f717b672b6ac5a4e0
F mkso.sh fd21c06b063bb16a5d25deea1752c2da6ac3ed83
F mptest/config01.test 3c6adcbc50b991866855f1977ff172eb6d901271
F mptest/config02.test 4415dfe36c48785f751e16e32c20b077c28ae504
@@ -478,7 +478,7 @@ F src/btreeInt.h dee1a1d0c621524e006bb260bd6b66d5d1867da6fe38cba9ad7b6a9bb9c0c17
F src/build.c 3d22f21c4701f62c1a191c6b6d17552fb1b593fe9a97c0613cca05ab104a9a51
F src/callback.c d0b853dd413255d2e337b34545e54d888ea02f20da5ad0e63585b389624c4a6c
F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
F src/ctime.c 6a77ec9e0eb87aea929e002c816298907e337094a7b556898ae2d1e6be209f90
F src/ctime.c 6892999ee100bd72b64f84dd7a8f737817d72872648705fbf8ed9575e1f1dd1a
F src/date.c 6c408fdd2e9ddf6e8431aba76315a2d061bea2cec8fbb75e25d7c1ba08274712
F src/dbpage.c 8a01e865bf8bc6d7b1844b4314443a6436c07c3efe1d488ed89e81719047833a
F src/dbstat.c 793deaf88a0904f88285d93d6713c636d55ede0ffd9f08d10f4ea825531d367f
@@ -495,7 +495,7 @@ F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
F src/insert.c 8e4211d04eb460c0694d486c6ba1c068d468c6f653c3f237869a802ad82854de
F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
F src/loadext.c b179df50e6e8bb0c36c149e95d958d49bd8c6c7469e59c01b53d164360bc6c32
F src/main.c b11eec03807a038b4075d310936dc33ce597078ab78c35dacdf5f05446ed53de
F src/main.c ed15d7e6b73ac081cf354b3544e7792a775492b19b2abf95e9f8be06e8c1c5e5
F src/malloc.c eaa4dc9602ce28b077f7de2eb275db2be270c5cc56d7fec5466301bd9b80e2f5
F src/mem0.c 6a55ebe57c46ca1a7d98da93aaa07f99f1059645
F src/mem1.c c12a42539b1ba105e3707d0e628ad70e611040d8f5e38cf942cee30c867083de
@@ -604,7 +604,7 @@ F src/utf.c 95fb6e03a5ca679045c5adccd05380f0addccabef5911abddcb06af069500ab7
F src/util.c a285c1e026907b69fa2592bd05047a565a1d8a1aef2b73c924b6a8ffe772871a
F src/vacuum.c 813b510ba887fee6492bcb11f2bf77d7eb58b232b83649136372e0a2fc17f4b9
F src/vdbe.c c1c123c6248fa88940b932a00bcc75056921b6d046d45a82566cb97415d2299c
F src/vdbe.h 51282fbe819ee0e8eeeaab176240860d334c20a12b14f3b363e7f1a4e05d60b9
F src/vdbe.h 07b8c636a87df8b6e58f29d6badd7f10d5844353deff1d7c88ed1c2bfe3bbd35
F src/vdbeInt.h 0b728ee662862a38b1912af741e2ac64f524de3c77aa86cf4306c42bdcd9de59
F src/vdbeapi.c 1252d80c548711e47a6d84dae88ed4e95d3fbb4e7bd0eaa1347299af7efddf02
F src/vdbeaux.c b78b4b71e04643f63820f074ece069834ffa658580546e9f248d5d85966daed2
@@ -612,6 +612,7 @@ F src/vdbeblob.c 253ed82894924c362a7fa3079551d3554cd1cdace39aa833da77d3bc67e7c1b
F src/vdbemem.c 39b942ecca179f4f30a32b54579a85d74ccaefa5af2a0ad2700abe5ef0768b22
F src/vdbesort.c 2be76d26998ce2b3324cdcc9f6443728e54b6c7677c553ad909c7d7cfab587df
F src/vdbetrace.c fa3bf238002f0bbbdfb66cc8afb0cea284ff9f148d6439bc1f6f2b4c3b7143f0
F src/vdbevtab.c dfe1e9b661e3de27f49fc160a04fc0275ab08bb46cdf20943bf2bf418db398a5
F src/vtab.c 7b704a90515a239c6cdba6a66b1bb3a385e62326cceb5ecb05ec7a091d6b8515
F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
F src/wal.c 697424314e40d99f93f548c7bfa526c10e87f4bdf64d5a76a96b999dd7133ebc
@@ -1798,7 +1799,7 @@ F tool/mkshellc.tcl 70a9978e363b0f3280ca9ce1c46d72563ff479c1930a12a7375e3881b732
F tool/mksourceid.c 36aa8020014aed0836fd13c51d6dc9219b0df1761d6b5f58ff5b616211b079b9
F tool/mkspeedsql.tcl a1a334d288f7adfe6e996f2e712becf076745c97
F tool/mksqlite3c-noext.tcl 4f7cfef5152b0c91920355cbfc1d608a4ad242cb819f1aea07f6d0274f584a7f
F tool/mksqlite3c.tcl 5fed3d75069d8f66f202d3b5200b0cea4aa7108481acd06732a06fdd42eb83a2
F tool/mksqlite3c.tcl 3ab95bcf7b765f9d6d99cbeb8c4f150b38b0bb1f001ffac688f2ad02ebce2123
F tool/mksqlite3h.tcl 080873e3856eceb9d289a08a00c4b30f875ea3feadcbece796bd509b1532792c
F tool/mksqlite3internalh.tcl eb994013e833359137eb53a55acdad0b5ae1049b
F tool/mkvsix.tcl b9e0777a213c23156b6542842c238479e496ebf5
@@ -1860,7 +1861,10 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
P 8a5c539b77aa174c048a504d211c56902075f9b42b654e1f8cc5767739e5fcc9
R 480ea7ba1b66f997fe626bc516b1544b
P 5d14a1c4f2fc17de98ad685ad1422cdfda89dfccb00afcaf32ee416b6f84f525
R 3485af640bb73943f778dcc7ece65b48
T *branch * bytecode-function
T *sym-bytecode-function *
T -sym-trunk *
U drh
Z 1f463b1edcb75b2ef80d4761df1603b9
Z c3d3bb21394129afccd09dd7aadc133f

2
manifest.uuid
View File

@@ -1 +1 @@
5d14a1c4f2fc17de98ad685ad1422cdfda89dfccb00afcaf32ee416b6f84f525
2795f0d633577e0de66b389d9e8e44c55e85975bdc62f1a0b8f93959d19b22bf

3
src/ctime.c
View File

@@ -193,6 +193,9 @@ static const char * const sqlite3azCompileOpt[] = {
#if SQLITE_ENABLE_BATCH_ATOMIC_WRITE
"ENABLE_BATCH_ATOMIC_WRITE",
#endif
#if SQLITE_ENABLE_BYTECODE_VTAB
"ENABLE_BYTECODE_VTAB",
#endif
#if SQLITE_ENABLE_CEROD
"ENABLE_CEROD=" CTIMEOPT_VAL(SQLITE_ENABLE_CEROD),
#endif

6
src/main.c
View File

@@ -3346,6 +3346,12 @@ static int openDatabase(
}
#endif
#ifdef SQLITE_ENABLE_BYTECODE_VTAB
if( !db->mallocFailed && rc==SQLITE_OK){
rc = sqlite3VdbeBytecodeVtabInit(db);
}
#endif
#ifdef SQLITE_ENABLE_INTERNAL_FUNCTIONS
/* Testing use only!!! The -DSQLITE_ENABLE_INTERNAL_FUNCTIONS=1 compile-time
** option gives access to internal functions by default.

3
src/vdbe.h
View File

@@ -290,6 +290,9 @@ void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *);
int sqlite3VdbeHasSubProgram(Vdbe*);
int sqlite3NotPureFunc(sqlite3_context*);
#ifdef SQLITE_ENABLE_BYTECODE_VTAB
int sqlite3VdbeBytecodeVtabInit(sqlite3*);
#endif
/* Use SQLITE_ENABLE_COMMENTS to enable generation of extra comments on
** each VDBE opcode.

223
src/vdbevtab.c Normal file
View File

@@ -0,0 +1,223 @@
/*
** 2020-03-23
**
** The author disclaims copyright to this source code. In place of
** a legal notice, here is a blessing:
**
** May you do good and not evil.
** May you find forgiveness for yourself and forgive others.
** May you share freely, never taking more than you give.
**
*************************************************************************
**
** This file implements virtual-tables for examining the bytecode content
** of a prepared statement.
*/
#ifdef SQLITE_ENABLE_BYTECODE_VTAB
#include "sqliteInt.h"
#include "vdbeInt.h"
/* An instance of the bytecode() table-valued function.
*/
typedef struct bytecodevtab_vtab bytecodevtab_vtab;
struct bytecodevtab_vtab {
sqlite3_vtab base; /* Base class - must be first */
sqlite3_stmt *pStmt; /* The statement whose bytecode is to be displayed */
};
/* A cursor for scanning through the bytecode
*/
typedef struct bytecodevtab_cursor bytecodevtab_cursor;
struct bytecodevtab_cursor {
sqlite3_vtab_cursor base; /* Base class - must be first */
sqlite3_int64 iRowid; /* The rowid */
};
/*
** Create a new bytecode() table-valued function.
*/
static int bytecodevtabConnect(
sqlite3 *db,
void *pAux,
int argc, const char *const*argv,
sqlite3_vtab **ppVtab,
char **pzErr
){
bytecodevtab_vtab *pNew;
int rc;
rc = sqlite3_declare_vtab(db,
"CREATE TABLE x("
"addr INT,"
"opcode TEXT,"
"p1 INT,"
"p2 INT,"
"p3 INT,"
"p4 TEXT,"
"p5 INT,"
"comment TEXT,"
"subprog TEXT,"
"stmt HIDDEN"
");"
);
if( rc==SQLITE_OK ){
pNew = sqlite3_malloc( sizeof(*pNew) );
*ppVtab = (sqlite3_vtab*)pNew;
if( pNew==0 ) return SQLITE_NOMEM;
memset(pNew, 0, sizeof(*pNew));
}
return rc;
}
/*
** This method is the destructor for bytecodevtab_vtab objects.
*/
static int bytecodevtabDisconnect(sqlite3_vtab *pVtab){
bytecodevtab_vtab *p = (bytecodevtab_vtab*)pVtab;
sqlite3_free(p);
return SQLITE_OK;
}
/*
** Constructor for a new bytecodevtab_cursor object.
*/
static int bytecodevtabOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){
bytecodevtab_cursor *pCur;
pCur = sqlite3_malloc( sizeof(*pCur) );
if( pCur==0 ) return SQLITE_NOMEM;
memset(pCur, 0, sizeof(*pCur));
*ppCursor = &pCur->base;
return SQLITE_OK;
}
/*
** Destructor for a bytecodevtab_cursor.
*/
static int bytecodevtabClose(sqlite3_vtab_cursor *cur){
bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
sqlite3_free(pCur);
return SQLITE_OK;
}
/*
** Advance a bytecodevtab_cursor to its next row of output.
*/
static int bytecodevtabNext(sqlite3_vtab_cursor *cur){
bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
pCur->iRowid++;
return SQLITE_OK;
}
/*
** Return values of columns for the row at which the bytecodevtab_cursor
** is currently pointing.
*/
static int bytecodevtabColumn(
sqlite3_vtab_cursor *cur, /* The cursor */
sqlite3_context *ctx, /* First argument to sqlite3_result_...() */
int i /* Which column to return */
){
bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
#if 0
switch( i ){
case TEMPLATEVTAB_A:
sqlite3_result_int(ctx, 1000 + pCur->iRowid);
break;
default:
assert( i==TEMPLATEVTAB_B );
sqlite3_result_int(ctx, 2000 + pCur->iRowid);
break;
}
#endif
return SQLITE_OK;
}
/*
** Return the rowid for the current row. In this implementation, the
** rowid is the same as the output value.
*/
static int bytecodevtabRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
*pRowid = pCur->iRowid;
return SQLITE_OK;
}
/*
** Return TRUE if the cursor has been moved off of the last
** row of output.
*/
static int bytecodevtabEof(sqlite3_vtab_cursor *cur){
bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
return pCur->iRowid>=10;
}
/*
** This method is called to "rewind" the bytecodevtab_cursor object back
** to the first row of output. This method is always called at least
** once prior to any call to bytecodevtabColumn() or bytecodevtabRowid() or
** bytecodevtabEof().
*/
static int bytecodevtabFilter(
sqlite3_vtab_cursor *pVtabCursor,
int idxNum, const char *idxStr,
int argc, sqlite3_value **argv
){
bytecodevtab_cursor *pCur = (bytecodevtab_cursor *)pVtabCursor;
pCur->iRowid = 1;
return SQLITE_OK;
}
/*
** SQLite will invoke this method one or more times while planning a query
** that uses the virtual table. This routine needs to create
** a query plan for each invocation and compute an estimated cost for that
** plan.
*/
static int bytecodevtabBestIndex(
sqlite3_vtab *tab,
sqlite3_index_info *pIdxInfo
){
pIdxInfo->estimatedCost = (double)10;
pIdxInfo->estimatedRows = 10;
return SQLITE_OK;
}
/*
** This following structure defines all the methods for the
** virtual table.
*/
static sqlite3_module bytecodevtabModule = {
/* iVersion */ 0,
/* xCreate */ 0,
/* xConnect */ bytecodevtabConnect,
/* xBestIndex */ bytecodevtabBestIndex,
/* xDisconnect */ bytecodevtabDisconnect,
/* xDestroy */ 0,
/* xOpen */ bytecodevtabOpen,
/* xClose */ bytecodevtabClose,
/* xFilter */ bytecodevtabFilter,
/* xNext */ bytecodevtabNext,
/* xEof */ bytecodevtabEof,
/* xColumn */ bytecodevtabColumn,
/* xRowid */ bytecodevtabRowid,
/* xUpdate */ 0,
/* xBegin */ 0,
/* xSync */ 0,
/* xCommit */ 0,
/* xRollback */ 0,
/* xFindMethod */ 0,
/* xRename */ 0,
/* xSavepoint */ 0,
/* xRelease */ 0,
/* xRollbackTo */ 0,
/* xShadowName */ 0
};
int sqlite3VdbeBytecodeVtabInit(sqlite3 *db){
int rc;
rc = sqlite3_create_module(db, "bytecodevtab", &bytecodevtabModule, 0);
return rc;
}
#endif /* SQLITE_ENABLE_BYTECODE_VTAB */

1
tool/mksqlite3c.tcl
View File

@@ -341,6 +341,7 @@ foreach file {
vdbe.c
vdbeblob.c
vdbesort.c
vdbevtab.c
memjournal.c
walker.c