diff options
Diffstat (limited to 'chromium/third_party/sqlite/src/ext/wasm/api/sqlite3-wasm.c')
| -rw-r--r-- | chromium/third_party/sqlite/src/ext/wasm/api/sqlite3-wasm.c | 1735 |
1 files changed, 1735 insertions, 0 deletions
diff --git a/chromium/third_party/sqlite/src/ext/wasm/api/sqlite3-wasm.c b/chromium/third_party/sqlite/src/ext/wasm/api/sqlite3-wasm.c new file mode 100644 index 00000000000..e7513509caf --- /dev/null +++ b/chromium/third_party/sqlite/src/ext/wasm/api/sqlite3-wasm.c @@ -0,0 +1,1735 @@ +/* +** This file requires access to sqlite3.c static state in order to +** implement certain WASM-specific features, and thus directly +** includes that file. Unlike the rest of sqlite3.c, this file +** requires compiling with -std=c99 (or equivalent, or a later C +** version) because it makes use of features not available in C89. +** +** At its simplest, to build sqlite3.wasm either place this file +** in the same directory as sqlite3.c/h before compilation or use the +** -I/path flag to tell the compiler where to find both of those +** files, then compile this file. For example: +** +** emcc -o sqlite3.wasm ... -I/path/to/sqlite3-c-and-h sqlite3-wasm.c +*/ +#define SQLITE_WASM +#ifdef SQLITE_WASM_ENABLE_C_TESTS +/* +** Code blocked off by SQLITE_WASM_TESTS is intended solely for use in +** unit/regression testing. They may be safely omitted from +** client-side builds. The main unit test script, tester1.js, will +** skip related tests if it doesn't find the corresponding functions +** in the WASM exports. +*/ +# define SQLITE_WASM_TESTS 1 +#else +# define SQLITE_WASM_TESTS 0 +#endif + +/* +** Threading and file locking: JS is single-threaded. Each Worker +** thread is a separate instance of the JS engine so can never access +** the same db handle as another thread, thus multi-threading support +** is unnecessary in the library. Because the filesystems are virtual +** and local to a given wasm runtime instance, two Workers can never +** access the same db file at once, with the exception of OPFS. +** +** Summary: except for the case of OPFS, which supports locking using +** its own API, threading and file locking support are unnecessary in +** the wasm build. +*/ + +/* +** Undefine any SQLITE_... config flags which we specifically do not +** want defined. Please keep these alphabetized. +*/ +#undef SQLITE_OMIT_DESERIALIZE +#undef SQLITE_OMIT_MEMORYDB + +/* +** Define any SQLITE_... config defaults we want if they aren't +** overridden by the builder. Please keep these alphabetized. +*/ + +/**********************************************************************/ +/* SQLITE_D... */ +#ifndef SQLITE_DEFAULT_CACHE_SIZE +/* +** The OPFS impls benefit tremendously from an increased cache size +** when working on large workloads, e.g. speedtest1 --size 50 or +** higher. On smaller workloads, e.g. speedtest1 --size 25, they +** clearly benefit from having 4mb of cache, but not as much as a +** larger cache benefits the larger workloads. Speed differences +** between 2x and nearly 3x have been measured with ample page cache. +*/ +# define SQLITE_DEFAULT_CACHE_SIZE -16384 +#endif +#if !defined(SQLITE_DEFAULT_PAGE_SIZE) +/* +** OPFS performance is improved by approx. 12% with a page size of 8kb +** instead of 4kb. Performance with 16kb is equivalent to 8kb. +** +** Performance difference of kvvfs with a page size of 8kb compared to +** 4kb, as measured by speedtest1 --size 4, is indeterminate: +** measurements are all over the place either way and not +** significantly different. +*/ +# define SQLITE_DEFAULT_PAGE_SIZE 8192 +#endif +#ifndef SQLITE_DEFAULT_UNIX_VFS +# define SQLITE_DEFAULT_UNIX_VFS "unix-none" +#endif +#undef SQLITE_DQS +#define SQLITE_DQS 0 + +/**********************************************************************/ +/* SQLITE_ENABLE_... */ +#ifndef SQLITE_ENABLE_BYTECODE_VTAB +# define SQLITE_ENABLE_BYTECODE_VTAB 1 +#endif +#ifndef SQLITE_ENABLE_DBPAGE_VTAB +# define SQLITE_ENABLE_DBPAGE_VTAB 1 +#endif +#ifndef SQLITE_ENABLE_DBSTAT_VTAB +# define SQLITE_ENABLE_DBSTAT_VTAB 1 +#endif +#ifndef SQLITE_ENABLE_EXPLAIN_COMMENTS +# define SQLITE_ENABLE_EXPLAIN_COMMENTS 1 +#endif +#ifndef SQLITE_ENABLE_FTS4 +# define SQLITE_ENABLE_FTS4 1 +#endif +#ifndef SQLITE_ENABLE_MATH_FUNCTIONS +# define SQLITE_ENABLE_MATH_FUNCTIONS 1 +#endif +#ifndef SQLITE_ENABLE_OFFSET_SQL_FUNC +# define SQLITE_ENABLE_OFFSET_SQL_FUNC 1 +#endif +#ifndef SQLITE_ENABLE_PREUPDATE_HOOK +# define SQLITE_ENABLE_PREUPDATE_HOOK 1 /*required by session extension*/ +#endif +#ifndef SQLITE_ENABLE_RTREE +# define SQLITE_ENABLE_RTREE 1 +#endif +#ifndef SQLITE_ENABLE_SESSION +# define SQLITE_ENABLE_SESSION 1 +#endif +#ifndef SQLITE_ENABLE_STMTVTAB +# define SQLITE_ENABLE_STMTVTAB 1 +#endif +#ifndef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION +# define SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION +#endif + +/**********************************************************************/ +/* SQLITE_M... */ +#ifndef SQLITE_MAX_ALLOCATION_SIZE +# define SQLITE_MAX_ALLOCATION_SIZE 0x1fffffff +#endif + +/**********************************************************************/ +/* SQLITE_O... */ +#ifndef SQLITE_OMIT_DEPRECATED +# define SQLITE_OMIT_DEPRECATED 1 +#endif +#ifndef SQLITE_OMIT_LOAD_EXTENSION +# define SQLITE_OMIT_LOAD_EXTENSION 1 +#endif +#ifndef SQLITE_OMIT_SHARED_CACHE +# define SQLITE_OMIT_SHARED_CACHE 1 +#endif +#ifndef SQLITE_OMIT_UTF16 +# define SQLITE_OMIT_UTF16 1 +#endif +#ifndef SQLITE_OMIT_WAL +# define SQLITE_OMIT_WAL 1 +#endif +#ifndef SQLITE_OS_KV_OPTIONAL +# define SQLITE_OS_KV_OPTIONAL 1 +#endif + +/**********************************************************************/ +/* SQLITE_T... */ +#ifndef SQLITE_TEMP_STORE +# define SQLITE_TEMP_STORE 3 +#endif +#ifndef SQLITE_THREADSAFE +# define SQLITE_THREADSAFE 0 +#endif + +/**********************************************************************/ +/* SQLITE_USE_... */ +#ifndef SQLITE_USE_URI +# define SQLITE_USE_URI 1 +#endif + +#include <assert.h> +#include "sqlite3.c" /* yes, .c instead of .h. */ + +#if defined(__EMSCRIPTEN__) +# include <emscripten/console.h> +#endif + +/* +** SQLITE_WASM_KEEP is functionally identical to EMSCRIPTEN_KEEPALIVE +** but is not Emscripten-specific. It explicitly marks functions for +** export into the target wasm file without requiring explicit listing +** of those functions in Emscripten's -sEXPORTED_FUNCTIONS=... list +** (or equivalent in other build platforms). Any function with neither +** this attribute nor which is listed as an explicit export will not +** be exported from the wasm file (but may still be used internally +** within the wasm file). +** +** The functions in this file (sqlite3-wasm.c) which require exporting +** are marked with this flag. They may also be added to any explicit +** build-time export list but need not be. All of these APIs are +** intended for use only within the project's own JS/WASM code, and +** not by client code, so an argument can be made for reducing their +** visibility by not including them in any build-time export lists. +** +** 2022-09-11: it's not yet _proven_ that this approach works in +** non-Emscripten builds. If not, such builds will need to export +** those using the --export=... wasm-ld flag (or equivalent). As of +** this writing we are tied to Emscripten for various reasons +** and cannot test the library with other build environments. +*/ +#define SQLITE_WASM_KEEP __attribute__((used,visibility("default"))) +// See also: +//__attribute__((export_name("theExportedName"), used, visibility("default"))) + + +#if 0 +/* +** An EXPERIMENT in implementing a stack-based allocator analog to +** Emscripten's stackSave(), stackAlloc(), stackRestore(). +** Unfortunately, this cannot work together with Emscripten because +** Emscripten defines its own native one and we'd stomp on each +** other's memory. Other than that complication, basic tests show it +** to work just fine. +** +** Another option is to malloc() a chunk of our own and call that our +** "stack". +*/ +SQLITE_WASM_KEEP void * sqlite3_wasm_stack_end(void){ + extern void __heap_base + /* see https://stackoverflow.com/questions/10038964 */; + return &__heap_base; +} +SQLITE_WASM_KEEP void * sqlite3_wasm_stack_begin(void){ + extern void __data_end; + return &__data_end; +} +static void * pWasmStackPtr = 0; +SQLITE_WASM_KEEP void * sqlite3_wasm_stack_ptr(void){ + if(!pWasmStackPtr) pWasmStackPtr = sqlite3_wasm_stack_end(); + return pWasmStackPtr; +} +SQLITE_WASM_KEEP void sqlite3_wasm_stack_restore(void * p){ + pWasmStackPtr = p; +} +SQLITE_WASM_KEEP void * sqlite3_wasm_stack_alloc(int n){ + if(n<=0) return 0; + n = (n + 7) & ~7 /* align to 8-byte boundary */; + unsigned char * const p = (unsigned char *)sqlite3_wasm_stack_ptr(); + unsigned const char * const b = (unsigned const char *)sqlite3_wasm_stack_begin(); + if(b + n >= p || b + n < b/*overflow*/) return 0; + return pWasmStackPtr = p - n; +} +#endif /* stack allocator experiment */ + +/* +** State for the "pseudo-stack" allocator implemented in +** sqlite3_wasm_pstack_xyz(). In order to avoid colliding with +** Emscripten-controled stack space, it carves out a bit of stack +** memory to use for that purpose. This memory ends up in the +** WASM-managed memory, such that routines which manipulate the wasm +** heap can also be used to manipulate this memory. +** +** This particular allocator is intended for small allocations such as +** storage for output pointers. We cannot reasonably size it large +** enough for general-purpose string conversions because some of our +** tests use input files (strings) of 16MB+. +*/ +static unsigned char PStack_mem[512 * 8] = {0}; +static struct { + unsigned const char * const pBegin;/* Start (inclusive) of memory */ + unsigned const char * const pEnd; /* One-after-the-end of memory */ + unsigned char * pPos; /* Current stack pointer */ +} PStack = { + &PStack_mem[0], + &PStack_mem[0] + sizeof(PStack_mem), + &PStack_mem[0] + sizeof(PStack_mem) +}; +/* +** Returns the current pstack position. +*/ +SQLITE_WASM_KEEP void * sqlite3_wasm_pstack_ptr(void){ + return PStack.pPos; +} +/* +** Sets the pstack position poitner to p. Results are undefined if the +** given value did not come from sqlite3_wasm_pstack_ptr(). +*/ +SQLITE_WASM_KEEP void sqlite3_wasm_pstack_restore(unsigned char * p){ + assert(p>=PStack.pBegin && p<=PStack.pEnd && p>=PStack.pPos); + assert(0==(p & 0x7)); + if(p>=PStack.pBegin && p<=PStack.pEnd /*&& p>=PStack.pPos*/){ + PStack.pPos = p; + } +} +/* +** Allocate and zero out n bytes from the pstack. Returns a pointer to +** the memory on success, 0 on error (including a negative n value). n +** is always adjusted to be a multiple of 8 and returned memory is +** always zeroed out before returning (because this keeps the client +** JS code from having to do so, and most uses of the pstack will +** call for doing so). +*/ +SQLITE_WASM_KEEP void * sqlite3_wasm_pstack_alloc(int n){ + if( n<=0 ) return 0; + //if( n & 0x7 ) n += 8 - (n & 0x7) /* align to 8-byte boundary */; + n = (n + 7) & ~7 /* align to 8-byte boundary */; + if( PStack.pBegin + n > PStack.pPos /*not enough space left*/ + || PStack.pBegin + n <= PStack.pBegin /*overflow*/ ) return 0; + memset((PStack.pPos = PStack.pPos - n), 0, (unsigned int)n); + return PStack.pPos; +} +/* +** Return the number of bytes left which can be +** sqlite3_wasm_pstack_alloc()'d. +*/ +SQLITE_WASM_KEEP int sqlite3_wasm_pstack_remaining(void){ + assert(PStack.pPos >= PStack.pBegin); + assert(PStack.pPos <= PStack.pEnd); + return (int)(PStack.pPos - PStack.pBegin); +} + +/* +** Return the total number of bytes available in the pstack, including +** any space which is currently allocated. This value is a +** compile-time constant. +*/ +SQLITE_WASM_KEEP int sqlite3_wasm_pstack_quota(void){ + return (int)(PStack.pEnd - PStack.pBegin); +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** For purposes of certain hand-crafted C/Wasm function bindings, we +** need a way of reporting errors which is consistent with the rest of +** the C API, as opposed to throwing JS exceptions. To that end, this +** internal-use-only function is a thin proxy around +** sqlite3ErrorWithMessage(). The intent is that it only be used from +** Wasm bindings such as sqlite3_prepare_v2/v3(), and definitely not +** from client code. +** +** Returns err_code. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_db_error(sqlite3*db, int err_code, const char *zMsg){ + if( db!=0 ){ + if( 0!=zMsg ){ + const int nMsg = sqlite3Strlen30(zMsg); + sqlite3ErrorWithMsg(db, err_code, "%.*s", nMsg, zMsg); + }else{ + sqlite3ErrorWithMsg(db, err_code, NULL); + } + } + return err_code; +} + +#if SQLITE_WASM_TESTS +struct WasmTestStruct { + int v4; + void * ppV; + const char * cstr; + int64_t v8; + void (*xFunc)(void*); +}; +typedef struct WasmTestStruct WasmTestStruct; +SQLITE_WASM_KEEP +void sqlite3_wasm_test_struct(WasmTestStruct * s){ + if(s){ + s->v4 *= 2; + s->v8 = s->v4 * 2; + s->ppV = s; + s->cstr = __FILE__; + if(s->xFunc) s->xFunc(s); + } + return; +} +#endif /* SQLITE_WASM_TESTS */ + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. Unlike the +** rest of the sqlite3 API, this part requires C99 for snprintf() and +** variadic macros. +** +** Returns a string containing a JSON-format "enum" of C-level +** constants and struct-related metadata intended to be imported into +** the JS environment. The JSON is initialized the first time this +** function is called and that result is reused for all future calls. +** +** If this function returns NULL then it means that the internal +** buffer is not large enough for the generated JSON and needs to be +** increased. In debug builds that will trigger an assert(). +*/ +SQLITE_WASM_KEEP +const char * sqlite3_wasm_enum_json(void){ + static char aBuffer[1024 * 20] = {0} /* where the JSON goes */; + int n = 0, nChildren = 0, nStruct = 0 + /* output counters for figuring out where commas go */; + char * zPos = &aBuffer[1] /* skip first byte for now to help protect + ** against a small race condition */; + char const * const zEnd = &aBuffer[0] + sizeof(aBuffer) /* one-past-the-end */; + if(aBuffer[0]) return aBuffer; + /* Leave aBuffer[0] at 0 until the end to help guard against a tiny + ** race condition. If this is called twice concurrently, they might + ** end up both writing to aBuffer, but they'll both write the same + ** thing, so that's okay. If we set byte 0 up front then the 2nd + ** instance might return and use the string before the 1st instance + ** is done filling it. */ + +/* Core output macros... */ +#define lenCheck assert(zPos < zEnd - 128 \ + && "sqlite3_wasm_enum_json() buffer is too small."); \ + if( zPos >= zEnd - 128 ) return 0 +#define outf(format,...) \ + zPos += snprintf(zPos, ((size_t)(zEnd - zPos)), format, __VA_ARGS__); \ + lenCheck +#define out(TXT) outf("%s",TXT) +#define CloseBrace(LEVEL) \ + assert(LEVEL<5); memset(zPos, '}', LEVEL); zPos+=LEVEL; lenCheck + +/* Macros for emitting maps of integer- and string-type macros to +** their values. */ +#define DefGroup(KEY) n = 0; \ + outf("%s\"" #KEY "\": {",(nChildren++ ? "," : "")); +#define DefInt(KEY) \ + outf("%s\"%s\": %d", (n++ ? ", " : ""), #KEY, (int)KEY) +#define DefStr(KEY) \ + outf("%s\"%s\": \"%s\"", (n++ ? ", " : ""), #KEY, KEY) +#define _DefGroup CloseBrace(1) + + /* The following groups are sorted alphabetic by group name. */ + DefGroup(access){ + DefInt(SQLITE_ACCESS_EXISTS); + DefInt(SQLITE_ACCESS_READWRITE); + DefInt(SQLITE_ACCESS_READ)/*docs say this is unused*/; + } _DefGroup; + + DefGroup(authorizer){ + DefInt(SQLITE_DENY); + DefInt(SQLITE_IGNORE); + DefInt(SQLITE_CREATE_INDEX); + DefInt(SQLITE_CREATE_TABLE); + DefInt(SQLITE_CREATE_TEMP_INDEX); + DefInt(SQLITE_CREATE_TEMP_TABLE); + DefInt(SQLITE_CREATE_TEMP_TRIGGER); + DefInt(SQLITE_CREATE_TEMP_VIEW); + DefInt(SQLITE_CREATE_TRIGGER); + DefInt(SQLITE_CREATE_VIEW); + DefInt(SQLITE_DELETE); + DefInt(SQLITE_DROP_INDEX); + DefInt(SQLITE_DROP_TABLE); + DefInt(SQLITE_DROP_TEMP_INDEX); + DefInt(SQLITE_DROP_TEMP_TABLE); + DefInt(SQLITE_DROP_TEMP_TRIGGER); + DefInt(SQLITE_DROP_TEMP_VIEW); + DefInt(SQLITE_DROP_TRIGGER); + DefInt(SQLITE_DROP_VIEW); + DefInt(SQLITE_INSERT); + DefInt(SQLITE_PRAGMA); + DefInt(SQLITE_READ); + DefInt(SQLITE_SELECT); + DefInt(SQLITE_TRANSACTION); + DefInt(SQLITE_UPDATE); + DefInt(SQLITE_ATTACH); + DefInt(SQLITE_DETACH); + DefInt(SQLITE_ALTER_TABLE); + DefInt(SQLITE_REINDEX); + DefInt(SQLITE_ANALYZE); + DefInt(SQLITE_CREATE_VTABLE); + DefInt(SQLITE_DROP_VTABLE); + DefInt(SQLITE_FUNCTION); + DefInt(SQLITE_SAVEPOINT); + //DefInt(SQLITE_COPY) /* No longer used */; + DefInt(SQLITE_RECURSIVE); + } _DefGroup; + + DefGroup(blobFinalizers) { + /* SQLITE_STATIC/TRANSIENT need to be handled explicitly as + ** integers to avoid casting-related warnings. */ + out("\"SQLITE_STATIC\":0, \"SQLITE_TRANSIENT\":-1"); + outf(",\"SQLITE_WASM_DEALLOC\": %lld", + (sqlite3_int64)(sqlite3_free)); + } _DefGroup; + + DefGroup(changeset){ + DefInt(SQLITE_CHANGESETSTART_INVERT); + DefInt(SQLITE_CHANGESETAPPLY_NOSAVEPOINT); + DefInt(SQLITE_CHANGESETAPPLY_INVERT); + + DefInt(SQLITE_CHANGESET_DATA); + DefInt(SQLITE_CHANGESET_NOTFOUND); + DefInt(SQLITE_CHANGESET_CONFLICT); + DefInt(SQLITE_CHANGESET_CONSTRAINT); + DefInt(SQLITE_CHANGESET_FOREIGN_KEY); + + DefInt(SQLITE_CHANGESET_OMIT); + DefInt(SQLITE_CHANGESET_REPLACE); + DefInt(SQLITE_CHANGESET_ABORT); + } _DefGroup; + + DefGroup(config){ + DefInt(SQLITE_CONFIG_SINGLETHREAD); + DefInt(SQLITE_CONFIG_MULTITHREAD); + DefInt(SQLITE_CONFIG_SERIALIZED); + DefInt(SQLITE_CONFIG_MALLOC); + DefInt(SQLITE_CONFIG_GETMALLOC); + DefInt(SQLITE_CONFIG_SCRATCH); + DefInt(SQLITE_CONFIG_PAGECACHE); + DefInt(SQLITE_CONFIG_HEAP); + DefInt(SQLITE_CONFIG_MEMSTATUS); + DefInt(SQLITE_CONFIG_MUTEX); + DefInt(SQLITE_CONFIG_GETMUTEX); +/* previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused. */ + DefInt(SQLITE_CONFIG_LOOKASIDE); + DefInt(SQLITE_CONFIG_PCACHE); + DefInt(SQLITE_CONFIG_GETPCACHE); + DefInt(SQLITE_CONFIG_LOG); + DefInt(SQLITE_CONFIG_URI); + DefInt(SQLITE_CONFIG_PCACHE2); + DefInt(SQLITE_CONFIG_GETPCACHE2); + DefInt(SQLITE_CONFIG_COVERING_INDEX_SCAN); + DefInt(SQLITE_CONFIG_SQLLOG); + DefInt(SQLITE_CONFIG_MMAP_SIZE); + DefInt(SQLITE_CONFIG_WIN32_HEAPSIZE); + DefInt(SQLITE_CONFIG_PCACHE_HDRSZ); + DefInt(SQLITE_CONFIG_PMASZ); + DefInt(SQLITE_CONFIG_STMTJRNL_SPILL); + DefInt(SQLITE_CONFIG_SMALL_MALLOC); + DefInt(SQLITE_CONFIG_SORTERREF_SIZE); + DefInt(SQLITE_CONFIG_MEMDB_MAXSIZE); + } _DefGroup; + + DefGroup(dataTypes) { + DefInt(SQLITE_INTEGER); + DefInt(SQLITE_FLOAT); + DefInt(SQLITE_TEXT); + DefInt(SQLITE_BLOB); + DefInt(SQLITE_NULL); + } _DefGroup; + + DefGroup(dbConfig){ + DefInt(SQLITE_DBCONFIG_MAINDBNAME); + DefInt(SQLITE_DBCONFIG_LOOKASIDE); + DefInt(SQLITE_DBCONFIG_ENABLE_FKEY); + DefInt(SQLITE_DBCONFIG_ENABLE_TRIGGER); + DefInt(SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER); + DefInt(SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION); + DefInt(SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE); + DefInt(SQLITE_DBCONFIG_ENABLE_QPSG); + DefInt(SQLITE_DBCONFIG_TRIGGER_EQP); + DefInt(SQLITE_DBCONFIG_RESET_DATABASE); + DefInt(SQLITE_DBCONFIG_DEFENSIVE); + DefInt(SQLITE_DBCONFIG_WRITABLE_SCHEMA); + DefInt(SQLITE_DBCONFIG_LEGACY_ALTER_TABLE); + DefInt(SQLITE_DBCONFIG_DQS_DML); + DefInt(SQLITE_DBCONFIG_DQS_DDL); + DefInt(SQLITE_DBCONFIG_ENABLE_VIEW); + DefInt(SQLITE_DBCONFIG_LEGACY_FILE_FORMAT); + DefInt(SQLITE_DBCONFIG_TRUSTED_SCHEMA); + DefInt(SQLITE_DBCONFIG_MAX); + } _DefGroup; + + DefGroup(dbStatus){ + DefInt(SQLITE_DBSTATUS_LOOKASIDE_USED); + DefInt(SQLITE_DBSTATUS_CACHE_USED); + DefInt(SQLITE_DBSTATUS_SCHEMA_USED); + DefInt(SQLITE_DBSTATUS_STMT_USED); + DefInt(SQLITE_DBSTATUS_LOOKASIDE_HIT); + DefInt(SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE); + DefInt(SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL); + DefInt(SQLITE_DBSTATUS_CACHE_HIT); + DefInt(SQLITE_DBSTATUS_CACHE_MISS); + DefInt(SQLITE_DBSTATUS_CACHE_WRITE); + DefInt(SQLITE_DBSTATUS_DEFERRED_FKS); + DefInt(SQLITE_DBSTATUS_CACHE_USED_SHARED); + DefInt(SQLITE_DBSTATUS_CACHE_SPILL); + DefInt(SQLITE_DBSTATUS_MAX); + } _DefGroup; + + DefGroup(encodings) { + /* Noting that the wasm binding only aims to support UTF-8. */ + DefInt(SQLITE_UTF8); + DefInt(SQLITE_UTF16LE); + DefInt(SQLITE_UTF16BE); + DefInt(SQLITE_UTF16); + /*deprecated DefInt(SQLITE_ANY); */ + DefInt(SQLITE_UTF16_ALIGNED); + } _DefGroup; + + DefGroup(fcntl) { + DefInt(SQLITE_FCNTL_LOCKSTATE); + DefInt(SQLITE_FCNTL_GET_LOCKPROXYFILE); + DefInt(SQLITE_FCNTL_SET_LOCKPROXYFILE); + DefInt(SQLITE_FCNTL_LAST_ERRNO); + DefInt(SQLITE_FCNTL_SIZE_HINT); + DefInt(SQLITE_FCNTL_CHUNK_SIZE); + DefInt(SQLITE_FCNTL_FILE_POINTER); + DefInt(SQLITE_FCNTL_SYNC_OMITTED); + DefInt(SQLITE_FCNTL_WIN32_AV_RETRY); + DefInt(SQLITE_FCNTL_PERSIST_WAL); + DefInt(SQLITE_FCNTL_OVERWRITE); + DefInt(SQLITE_FCNTL_VFSNAME); + DefInt(SQLITE_FCNTL_POWERSAFE_OVERWRITE); + DefInt(SQLITE_FCNTL_PRAGMA); + DefInt(SQLITE_FCNTL_BUSYHANDLER); + DefInt(SQLITE_FCNTL_TEMPFILENAME); + DefInt(SQLITE_FCNTL_MMAP_SIZE); + DefInt(SQLITE_FCNTL_TRACE); + DefInt(SQLITE_FCNTL_HAS_MOVED); + DefInt(SQLITE_FCNTL_SYNC); + DefInt(SQLITE_FCNTL_COMMIT_PHASETWO); + DefInt(SQLITE_FCNTL_WIN32_SET_HANDLE); + DefInt(SQLITE_FCNTL_WAL_BLOCK); + DefInt(SQLITE_FCNTL_ZIPVFS); + DefInt(SQLITE_FCNTL_RBU); + DefInt(SQLITE_FCNTL_VFS_POINTER); + DefInt(SQLITE_FCNTL_JOURNAL_POINTER); + DefInt(SQLITE_FCNTL_WIN32_GET_HANDLE); + DefInt(SQLITE_FCNTL_PDB); + DefInt(SQLITE_FCNTL_BEGIN_ATOMIC_WRITE); + DefInt(SQLITE_FCNTL_COMMIT_ATOMIC_WRITE); + DefInt(SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE); + DefInt(SQLITE_FCNTL_LOCK_TIMEOUT); + DefInt(SQLITE_FCNTL_DATA_VERSION); + DefInt(SQLITE_FCNTL_SIZE_LIMIT); + DefInt(SQLITE_FCNTL_CKPT_DONE); + DefInt(SQLITE_FCNTL_RESERVE_BYTES); + DefInt(SQLITE_FCNTL_CKPT_START); + DefInt(SQLITE_FCNTL_EXTERNAL_READER); + DefInt(SQLITE_FCNTL_CKSM_FILE); + } _DefGroup; + + DefGroup(flock) { + DefInt(SQLITE_LOCK_NONE); + DefInt(SQLITE_LOCK_SHARED); + DefInt(SQLITE_LOCK_RESERVED); + DefInt(SQLITE_LOCK_PENDING); + DefInt(SQLITE_LOCK_EXCLUSIVE); + } _DefGroup; + + DefGroup(ioCap) { + DefInt(SQLITE_IOCAP_ATOMIC); + DefInt(SQLITE_IOCAP_ATOMIC512); + DefInt(SQLITE_IOCAP_ATOMIC1K); + DefInt(SQLITE_IOCAP_ATOMIC2K); + DefInt(SQLITE_IOCAP_ATOMIC4K); + DefInt(SQLITE_IOCAP_ATOMIC8K); + DefInt(SQLITE_IOCAP_ATOMIC16K); + DefInt(SQLITE_IOCAP_ATOMIC32K); + DefInt(SQLITE_IOCAP_ATOMIC64K); + DefInt(SQLITE_IOCAP_SAFE_APPEND); + DefInt(SQLITE_IOCAP_SEQUENTIAL); + DefInt(SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN); + DefInt(SQLITE_IOCAP_POWERSAFE_OVERWRITE); + DefInt(SQLITE_IOCAP_IMMUTABLE); + DefInt(SQLITE_IOCAP_BATCH_ATOMIC); + } _DefGroup; + + DefGroup(limits) { + DefInt(SQLITE_MAX_ALLOCATION_SIZE); + DefInt(SQLITE_LIMIT_LENGTH); + DefInt(SQLITE_MAX_LENGTH); + DefInt(SQLITE_LIMIT_SQL_LENGTH); + DefInt(SQLITE_MAX_SQL_LENGTH); + DefInt(SQLITE_LIMIT_COLUMN); + DefInt(SQLITE_MAX_COLUMN); + DefInt(SQLITE_LIMIT_EXPR_DEPTH); + DefInt(SQLITE_MAX_EXPR_DEPTH); + DefInt(SQLITE_LIMIT_COMPOUND_SELECT); + DefInt(SQLITE_MAX_COMPOUND_SELECT); + DefInt(SQLITE_LIMIT_VDBE_OP); + DefInt(SQLITE_MAX_VDBE_OP); + DefInt(SQLITE_LIMIT_FUNCTION_ARG); + DefInt(SQLITE_MAX_FUNCTION_ARG); + DefInt(SQLITE_LIMIT_ATTACHED); + DefInt(SQLITE_MAX_ATTACHED); + DefInt(SQLITE_LIMIT_LIKE_PATTERN_LENGTH); + DefInt(SQLITE_MAX_LIKE_PATTERN_LENGTH); + DefInt(SQLITE_LIMIT_VARIABLE_NUMBER); + DefInt(SQLITE_MAX_VARIABLE_NUMBER); + DefInt(SQLITE_LIMIT_TRIGGER_DEPTH); + DefInt(SQLITE_MAX_TRIGGER_DEPTH); + DefInt(SQLITE_LIMIT_WORKER_THREADS); + DefInt(SQLITE_MAX_WORKER_THREADS); + } _DefGroup; + + DefGroup(openFlags) { + /* Noting that not all of these will have any effect in + ** WASM-space. */ + DefInt(SQLITE_OPEN_READONLY); + DefInt(SQLITE_OPEN_READWRITE); + DefInt(SQLITE_OPEN_CREATE); + DefInt(SQLITE_OPEN_URI); + DefInt(SQLITE_OPEN_MEMORY); + DefInt(SQLITE_OPEN_NOMUTEX); + DefInt(SQLITE_OPEN_FULLMUTEX); + DefInt(SQLITE_OPEN_SHAREDCACHE); + DefInt(SQLITE_OPEN_PRIVATECACHE); + DefInt(SQLITE_OPEN_EXRESCODE); + DefInt(SQLITE_OPEN_NOFOLLOW); + /* OPEN flags for use with VFSes... */ + DefInt(SQLITE_OPEN_MAIN_DB); + DefInt(SQLITE_OPEN_MAIN_JOURNAL); + DefInt(SQLITE_OPEN_TEMP_DB); + DefInt(SQLITE_OPEN_TEMP_JOURNAL); + DefInt(SQLITE_OPEN_TRANSIENT_DB); + DefInt(SQLITE_OPEN_SUBJOURNAL); + DefInt(SQLITE_OPEN_SUPER_JOURNAL); + DefInt(SQLITE_OPEN_WAL); + DefInt(SQLITE_OPEN_DELETEONCLOSE); + DefInt(SQLITE_OPEN_EXCLUSIVE); + } _DefGroup; + + DefGroup(prepareFlags) { + DefInt(SQLITE_PREPARE_PERSISTENT); + DefInt(SQLITE_PREPARE_NORMALIZE); + DefInt(SQLITE_PREPARE_NO_VTAB); + } _DefGroup; + + DefGroup(resultCodes) { + DefInt(SQLITE_OK); + DefInt(SQLITE_ERROR); + DefInt(SQLITE_INTERNAL); + DefInt(SQLITE_PERM); + DefInt(SQLITE_ABORT); + DefInt(SQLITE_BUSY); + DefInt(SQLITE_LOCKED); + DefInt(SQLITE_NOMEM); + DefInt(SQLITE_READONLY); + DefInt(SQLITE_INTERRUPT); + DefInt(SQLITE_IOERR); + DefInt(SQLITE_CORRUPT); + DefInt(SQLITE_NOTFOUND); + DefInt(SQLITE_FULL); + DefInt(SQLITE_CANTOPEN); + DefInt(SQLITE_PROTOCOL); + DefInt(SQLITE_EMPTY); + DefInt(SQLITE_SCHEMA); + DefInt(SQLITE_TOOBIG); + DefInt(SQLITE_CONSTRAINT); + DefInt(SQLITE_MISMATCH); + DefInt(SQLITE_MISUSE); + DefInt(SQLITE_NOLFS); + DefInt(SQLITE_AUTH); + DefInt(SQLITE_FORMAT); + DefInt(SQLITE_RANGE); + DefInt(SQLITE_NOTADB); + DefInt(SQLITE_NOTICE); + DefInt(SQLITE_WARNING); + DefInt(SQLITE_ROW); + DefInt(SQLITE_DONE); + // Extended Result Codes + DefInt(SQLITE_ERROR_MISSING_COLLSEQ); + DefInt(SQLITE_ERROR_RETRY); + DefInt(SQLITE_ERROR_SNAPSHOT); + DefInt(SQLITE_IOERR_READ); + DefInt(SQLITE_IOERR_SHORT_READ); + DefInt(SQLITE_IOERR_WRITE); + DefInt(SQLITE_IOERR_FSYNC); + DefInt(SQLITE_IOERR_DIR_FSYNC); + DefInt(SQLITE_IOERR_TRUNCATE); + DefInt(SQLITE_IOERR_FSTAT); + DefInt(SQLITE_IOERR_UNLOCK); + DefInt(SQLITE_IOERR_RDLOCK); + DefInt(SQLITE_IOERR_DELETE); + DefInt(SQLITE_IOERR_BLOCKED); + DefInt(SQLITE_IOERR_NOMEM); + DefInt(SQLITE_IOERR_ACCESS); + DefInt(SQLITE_IOERR_CHECKRESERVEDLOCK); + DefInt(SQLITE_IOERR_LOCK); + DefInt(SQLITE_IOERR_CLOSE); + DefInt(SQLITE_IOERR_DIR_CLOSE); + DefInt(SQLITE_IOERR_SHMOPEN); + DefInt(SQLITE_IOERR_SHMSIZE); + DefInt(SQLITE_IOERR_SHMLOCK); + DefInt(SQLITE_IOERR_SHMMAP); + DefInt(SQLITE_IOERR_SEEK); + DefInt(SQLITE_IOERR_DELETE_NOENT); + DefInt(SQLITE_IOERR_MMAP); + DefInt(SQLITE_IOERR_GETTEMPPATH); + DefInt(SQLITE_IOERR_CONVPATH); + DefInt(SQLITE_IOERR_VNODE); + DefInt(SQLITE_IOERR_AUTH); + DefInt(SQLITE_IOERR_BEGIN_ATOMIC); + DefInt(SQLITE_IOERR_COMMIT_ATOMIC); + DefInt(SQLITE_IOERR_ROLLBACK_ATOMIC); + DefInt(SQLITE_IOERR_DATA); + DefInt(SQLITE_IOERR_CORRUPTFS); + DefInt(SQLITE_LOCKED_SHAREDCACHE); + DefInt(SQLITE_LOCKED_VTAB); + DefInt(SQLITE_BUSY_RECOVERY); + DefInt(SQLITE_BUSY_SNAPSHOT); + DefInt(SQLITE_BUSY_TIMEOUT); + DefInt(SQLITE_CANTOPEN_NOTEMPDIR); + DefInt(SQLITE_CANTOPEN_ISDIR); + DefInt(SQLITE_CANTOPEN_FULLPATH); + DefInt(SQLITE_CANTOPEN_CONVPATH); + //DefInt(SQLITE_CANTOPEN_DIRTYWAL)/*docs say not used*/; + DefInt(SQLITE_CANTOPEN_SYMLINK); + DefInt(SQLITE_CORRUPT_VTAB); + DefInt(SQLITE_CORRUPT_SEQUENCE); + DefInt(SQLITE_CORRUPT_INDEX); + DefInt(SQLITE_READONLY_RECOVERY); + DefInt(SQLITE_READONLY_CANTLOCK); + DefInt(SQLITE_READONLY_ROLLBACK); + DefInt(SQLITE_READONLY_DBMOVED); + DefInt(SQLITE_READONLY_CANTINIT); + DefInt(SQLITE_READONLY_DIRECTORY); + DefInt(SQLITE_ABORT_ROLLBACK); + DefInt(SQLITE_CONSTRAINT_CHECK); + DefInt(SQLITE_CONSTRAINT_COMMITHOOK); + DefInt(SQLITE_CONSTRAINT_FOREIGNKEY); + DefInt(SQLITE_CONSTRAINT_FUNCTION); + DefInt(SQLITE_CONSTRAINT_NOTNULL); + DefInt(SQLITE_CONSTRAINT_PRIMARYKEY); + DefInt(SQLITE_CONSTRAINT_TRIGGER); + DefInt(SQLITE_CONSTRAINT_UNIQUE); + DefInt(SQLITE_CONSTRAINT_VTAB); + DefInt(SQLITE_CONSTRAINT_ROWID); + DefInt(SQLITE_CONSTRAINT_PINNED); + DefInt(SQLITE_CONSTRAINT_DATATYPE); + DefInt(SQLITE_NOTICE_RECOVER_WAL); + DefInt(SQLITE_NOTICE_RECOVER_ROLLBACK); + DefInt(SQLITE_WARNING_AUTOINDEX); + DefInt(SQLITE_AUTH_USER); + DefInt(SQLITE_OK_LOAD_PERMANENTLY); + //DefInt(SQLITE_OK_SYMLINK) /* internal use only */; + } _DefGroup; + + DefGroup(serialize){ + DefInt(SQLITE_SERIALIZE_NOCOPY); + DefInt(SQLITE_DESERIALIZE_FREEONCLOSE); + DefInt(SQLITE_DESERIALIZE_READONLY); + DefInt(SQLITE_DESERIALIZE_RESIZEABLE); + } _DefGroup; + + DefGroup(session){ + DefInt(SQLITE_SESSION_CONFIG_STRMSIZE); + DefInt(SQLITE_SESSION_OBJCONFIG_SIZE); + } _DefGroup; + + DefGroup(sqlite3Status){ + DefInt(SQLITE_STATUS_MEMORY_USED); + DefInt(SQLITE_STATUS_PAGECACHE_USED); + DefInt(SQLITE_STATUS_PAGECACHE_OVERFLOW); + //DefInt(SQLITE_STATUS_SCRATCH_USED) /* NOT USED */; + //DefInt(SQLITE_STATUS_SCRATCH_OVERFLOW) /* NOT USED */; + DefInt(SQLITE_STATUS_MALLOC_SIZE); + DefInt(SQLITE_STATUS_PARSER_STACK); + DefInt(SQLITE_STATUS_PAGECACHE_SIZE); + //DefInt(SQLITE_STATUS_SCRATCH_SIZE) /* NOT USED */; + DefInt(SQLITE_STATUS_MALLOC_COUNT); + } _DefGroup; + + DefGroup(stmtStatus){ + DefInt(SQLITE_STMTSTATUS_FULLSCAN_STEP); + DefInt(SQLITE_STMTSTATUS_SORT); + DefInt(SQLITE_STMTSTATUS_AUTOINDEX); + DefInt(SQLITE_STMTSTATUS_VM_STEP); + DefInt(SQLITE_STMTSTATUS_REPREPARE); + DefInt(SQLITE_STMTSTATUS_RUN); + DefInt(SQLITE_STMTSTATUS_FILTER_MISS); + DefInt(SQLITE_STMTSTATUS_FILTER_HIT); + DefInt(SQLITE_STMTSTATUS_MEMUSED); + } _DefGroup; + + DefGroup(syncFlags) { + DefInt(SQLITE_SYNC_NORMAL); + DefInt(SQLITE_SYNC_FULL); + DefInt(SQLITE_SYNC_DATAONLY); + } _DefGroup; + + DefGroup(trace) { + DefInt(SQLITE_TRACE_STMT); + DefInt(SQLITE_TRACE_PROFILE); + DefInt(SQLITE_TRACE_ROW); + DefInt(SQLITE_TRACE_CLOSE); + } _DefGroup; + + DefGroup(txnState){ + DefInt(SQLITE_TXN_NONE); + DefInt(SQLITE_TXN_READ); + DefInt(SQLITE_TXN_WRITE); + } _DefGroup; + + DefGroup(udfFlags) { + DefInt(SQLITE_DETERMINISTIC); + DefInt(SQLITE_DIRECTONLY); + DefInt(SQLITE_INNOCUOUS); + } _DefGroup; + + DefGroup(version) { + DefInt(SQLITE_VERSION_NUMBER); + DefStr(SQLITE_VERSION); + DefStr(SQLITE_SOURCE_ID); + } _DefGroup; + + DefGroup(vtab) { + DefInt(SQLITE_INDEX_SCAN_UNIQUE); + DefInt(SQLITE_INDEX_CONSTRAINT_EQ); + DefInt(SQLITE_INDEX_CONSTRAINT_GT); + DefInt(SQLITE_INDEX_CONSTRAINT_LE); + DefInt(SQLITE_INDEX_CONSTRAINT_LT); + DefInt(SQLITE_INDEX_CONSTRAINT_GE); + DefInt(SQLITE_INDEX_CONSTRAINT_MATCH); + DefInt(SQLITE_INDEX_CONSTRAINT_LIKE); + DefInt(SQLITE_INDEX_CONSTRAINT_GLOB); + DefInt(SQLITE_INDEX_CONSTRAINT_REGEXP); + DefInt(SQLITE_INDEX_CONSTRAINT_NE); + DefInt(SQLITE_INDEX_CONSTRAINT_ISNOT); + DefInt(SQLITE_INDEX_CONSTRAINT_ISNOTNULL); + DefInt(SQLITE_INDEX_CONSTRAINT_ISNULL); + DefInt(SQLITE_INDEX_CONSTRAINT_IS); + DefInt(SQLITE_INDEX_CONSTRAINT_LIMIT); + DefInt(SQLITE_INDEX_CONSTRAINT_OFFSET); + DefInt(SQLITE_INDEX_CONSTRAINT_FUNCTION); + DefInt(SQLITE_VTAB_CONSTRAINT_SUPPORT); + DefInt(SQLITE_VTAB_INNOCUOUS); + DefInt(SQLITE_VTAB_DIRECTONLY); + DefInt(SQLITE_ROLLBACK); + //DefInt(SQLITE_IGNORE); // Also used by sqlite3_authorizer() callback + DefInt(SQLITE_FAIL); + //DefInt(SQLITE_ABORT); // Also an error code + DefInt(SQLITE_REPLACE); + } _DefGroup; + +#undef DefGroup +#undef DefStr +#undef DefInt +#undef _DefGroup + + /* + ** Emit an array of "StructBinder" struct descripions, which look + ** like: + ** + ** { + ** "name": "MyStruct", + ** "sizeof": 16, + ** "members": { + ** "member1": {"offset": 0,"sizeof": 4,"signature": "i"}, + ** "member2": {"offset": 4,"sizeof": 4,"signature": "p"}, + ** "member3": {"offset": 8,"sizeof": 8,"signature": "j"} + ** } + ** } + ** + ** Detailed documentation for those bits are in the docs for the + ** Jaccwabyt JS-side component. + */ + + /** Macros for emitting StructBinder description. */ +#define StructBinder__(TYPE) \ + n = 0; \ + outf("%s{", (nStruct++ ? ", " : "")); \ + out("\"name\": \"" # TYPE "\","); \ + outf("\"sizeof\": %d", (int)sizeof(TYPE)); \ + out(",\"members\": {"); +#define StructBinder_(T) StructBinder__(T) + /** ^^^ indirection needed to expand CurrentStruct */ +#define StructBinder StructBinder_(CurrentStruct) +#define _StructBinder CloseBrace(2) +#define M(MEMBER,SIG) \ + outf("%s\"%s\": " \ + "{\"offset\":%d,\"sizeof\": %d,\"signature\":\"%s\"}", \ + (n++ ? ", " : ""), #MEMBER, \ + (int)offsetof(CurrentStruct,MEMBER), \ + (int)sizeof(((CurrentStruct*)0)->MEMBER), \ + SIG) + + nStruct = 0; + out(", \"structs\": ["); { + +#define CurrentStruct sqlite3_vfs + StructBinder { + M(iVersion, "i"); + M(szOsFile, "i"); + M(mxPathname, "i"); + M(pNext, "p"); + M(zName, "s"); + M(pAppData, "p"); + M(xOpen, "i(pppip)"); + M(xDelete, "i(ppi)"); + M(xAccess, "i(ppip)"); + M(xFullPathname, "i(ppip)"); + M(xDlOpen, "p(pp)"); + M(xDlError, "p(pip)"); + M(xDlSym, "p()"); + M(xDlClose, "v(pp)"); + M(xRandomness, "i(pip)"); + M(xSleep, "i(pi)"); + M(xCurrentTime, "i(pp)"); + M(xGetLastError, "i(pip)"); + M(xCurrentTimeInt64, "i(pp)"); + M(xSetSystemCall, "i(ppp)"); + M(xGetSystemCall, "p(pp)"); + M(xNextSystemCall, "p(pp)"); + } _StructBinder; +#undef CurrentStruct + +#define CurrentStruct sqlite3_io_methods + StructBinder { + M(iVersion, "i"); + M(xClose, "i(p)"); + M(xRead, "i(ppij)"); + M(xWrite, "i(ppij)"); + M(xTruncate, "i(pj)"); + M(xSync, "i(pi)"); + M(xFileSize, "i(pp)"); + M(xLock, "i(pi)"); + M(xUnlock, "i(pi)"); + M(xCheckReservedLock, "i(pp)"); + M(xFileControl, "i(pip)"); + M(xSectorSize, "i(p)"); + M(xDeviceCharacteristics, "i(p)"); + M(xShmMap, "i(piiip)"); + M(xShmLock, "i(piii)"); + M(xShmBarrier, "v(p)"); + M(xShmUnmap, "i(pi)"); + M(xFetch, "i(pjip)"); + M(xUnfetch, "i(pjp)"); + } _StructBinder; +#undef CurrentStruct + +#define CurrentStruct sqlite3_file + StructBinder { + M(pMethods, "p"); + } _StructBinder; +#undef CurrentStruct + +#define CurrentStruct sqlite3_kvvfs_methods + StructBinder { + M(xRead, "i(sspi)"); + M(xWrite, "i(sss)"); + M(xDelete, "i(ss)"); + M(nKeySize, "i"); + } _StructBinder; +#undef CurrentStruct + + +#define CurrentStruct sqlite3_vtab + StructBinder { + M(pModule, "p"); + M(nRef, "i"); + M(zErrMsg, "p"); + } _StructBinder; +#undef CurrentStruct + +#define CurrentStruct sqlite3_vtab_cursor + StructBinder { + M(pVtab, "p"); + } _StructBinder; +#undef CurrentStruct + +#define CurrentStruct sqlite3_module + StructBinder { + M(iVersion, "i"); + M(xCreate, "i(ppippp)"); + M(xConnect, "i(ppippp)"); + M(xBestIndex, "i(pp)"); + M(xDisconnect, "i(p)"); + M(xDestroy, "i(p)"); + M(xOpen, "i(pp)"); + M(xClose, "i(p)"); + M(xFilter, "i(pisip)"); + M(xNext, "i(p)"); + M(xEof, "i(p)"); + M(xColumn, "i(ppi)"); + M(xRowid, "i(pp)"); + M(xUpdate, "i(pipp)"); + M(xBegin, "i(p)"); + M(xSync, "i(p)"); + M(xCommit, "i(p)"); + M(xRollback, "i(p)"); + M(xFindFunction, "i(pispp)"); + M(xRename, "i(ps)"); + // ^^^ v1. v2+ follows... + M(xSavepoint, "i(pi)"); + M(xRelease, "i(pi)"); + M(xRollbackTo, "i(pi)"); + // ^^^ v2. v3+ follows... + M(xShadowName, "i(s)"); + } _StructBinder; +#undef CurrentStruct + + /** + ** Workaround: in order to map the various inner structs from + ** sqlite3_index_info, we have to uplift those into constructs we + ** can access by type name. These structs _must_ match their + ** in-sqlite3_index_info counterparts byte for byte. + */ + typedef struct { + int iColumn; + unsigned char op; + unsigned char usable; + int iTermOffset; + } sqlite3_index_constraint; + typedef struct { + int iColumn; + unsigned char desc; + } sqlite3_index_orderby; + typedef struct { + int argvIndex; + unsigned char omit; + } sqlite3_index_constraint_usage; + { /* Validate that the above struct sizeof()s match + ** expectations. We could improve upon this by + ** checking the offsetof() for each member. */ + const sqlite3_index_info siiCheck; +#define IndexSzCheck(T,M) \ + (sizeof(T) == sizeof(*siiCheck.M)) + if(!IndexSzCheck(sqlite3_index_constraint,aConstraint) + || !IndexSzCheck(sqlite3_index_orderby,aOrderBy) + || !IndexSzCheck(sqlite3_index_constraint_usage,aConstraintUsage)){ + assert(!"sizeof mismatch in sqlite3_index_... struct(s)"); + return 0; + } +#undef IndexSzCheck + } + +#define CurrentStruct sqlite3_index_constraint + StructBinder { + M(iColumn, "i"); + M(op, "C"); + M(usable, "C"); + M(iTermOffset, "i"); + } _StructBinder; +#undef CurrentStruct + +#define CurrentStruct sqlite3_index_orderby + StructBinder { + M(iColumn, "i"); + M(desc, "C"); + } _StructBinder; +#undef CurrentStruct + +#define CurrentStruct sqlite3_index_constraint_usage + StructBinder { + M(argvIndex, "i"); + M(omit, "C"); + } _StructBinder; +#undef CurrentStruct + +#define CurrentStruct sqlite3_index_info + StructBinder { + M(nConstraint, "i"); + M(aConstraint, "p"); + M(nOrderBy, "i"); + M(aOrderBy, "p"); + M(aConstraintUsage, "p"); + M(idxNum, "i"); + M(idxStr, "p"); + M(needToFreeIdxStr, "i"); + M(orderByConsumed, "i"); + M(estimatedCost, "d"); + M(estimatedRows, "j"); + M(idxFlags, "i"); + M(colUsed, "j"); + } _StructBinder; +#undef CurrentStruct + +#if SQLITE_WASM_TESTS +#define CurrentStruct WasmTestStruct + StructBinder { + M(v4, "i"); + M(cstr, "s"); + M(ppV, "p"); + M(v8, "j"); + M(xFunc, "v(p)"); + } _StructBinder; +#undef CurrentStruct +#endif + + } out( "]"/*structs*/); + + out("}"/*top-level object*/); + *zPos = 0; + aBuffer[0] = '{'/*end of the race-condition workaround*/; + return aBuffer; +#undef StructBinder +#undef StructBinder_ +#undef StructBinder__ +#undef M +#undef _StructBinder +#undef CloseBrace +#undef out +#undef outf +#undef lenCheck +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** This function invokes the xDelete method of the given VFS (or the +** default VFS if pVfs is NULL), passing on the given filename. If +** zName is NULL, no default VFS is found, or it has no xDelete +** method, SQLITE_MISUSE is returned, else the result of the xDelete() +** call is returned. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_vfs_unlink(sqlite3_vfs *pVfs, const char *zName){ + int rc = SQLITE_MISUSE /* ??? */; + if( 0==pVfs && 0!=zName ) pVfs = sqlite3_vfs_find(0); + if( zName && pVfs && pVfs->xDelete ){ + rc = pVfs->xDelete(pVfs, zName, 1); + } + return rc; +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Returns a pointer to the given DB's VFS for the given DB name, +** defaulting to "main" if zDbName is 0. Returns 0 if no db with the +** given name is open. +*/ +SQLITE_WASM_KEEP +sqlite3_vfs * sqlite3_wasm_db_vfs(sqlite3 *pDb, const char *zDbName){ + sqlite3_vfs * pVfs = 0; + sqlite3_file_control(pDb, zDbName ? zDbName : "main", + SQLITE_FCNTL_VFS_POINTER, &pVfs); + return pVfs; +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** This function resets the given db pointer's database as described at +** +** https://sqlite.org/c3ref/c_dbconfig_defensive.html#sqlitedbconfigresetdatabase +** +** But beware: virtual tables destroyed that way do not have their +** xDestroy() called, so will leak if they require that function for +** proper cleanup. +** +** Returns 0 on success, an SQLITE_xxx code on error. Returns +** SQLITE_MISUSE if pDb is NULL. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_db_reset(sqlite3 *pDb){ + int rc = SQLITE_MISUSE; + if( pDb ){ + sqlite3_table_column_metadata(pDb, "main", 0, 0, 0, 0, 0, 0, 0); + rc = sqlite3_db_config(pDb, SQLITE_DBCONFIG_RESET_DATABASE, 1, 0); + if( 0==rc ){ + rc = sqlite3_exec(pDb, "VACUUM", 0, 0, 0); + sqlite3_db_config(pDb, SQLITE_DBCONFIG_RESET_DATABASE, 0, 0); + } + } + return rc; +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Uses the given database's VFS xRead to stream the db file's +** contents out to the given callback. The callback gets a single +** chunk of size n (its 2nd argument) on each call and must return 0 +** on success, non-0 on error. This function returns 0 on success, +** SQLITE_NOTFOUND if no db is open, or propagates any other non-0 +** code from the callback. Note that this is not thread-friendly: it +** expects that it will be the only thread reading the db file and +** takes no measures to ensure that is the case. +** +** This implementation appears to work fine, but +** sqlite3_wasm_db_serialize() is arguably the better way to achieve +** this. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_db_export_chunked( sqlite3* pDb, + int (*xCallback)(unsigned const char *zOut, int n) ){ + sqlite3_int64 nSize = 0; + sqlite3_int64 nPos = 0; + sqlite3_file * pFile = 0; + unsigned char buf[1024 * 8]; + int nBuf = (int)sizeof(buf); + int rc = pDb + ? sqlite3_file_control(pDb, "main", + SQLITE_FCNTL_FILE_POINTER, &pFile) + : SQLITE_NOTFOUND; + if( rc ) return rc; + rc = pFile->pMethods->xFileSize(pFile, &nSize); + if( rc ) return rc; + if(nSize % nBuf){ + /* DB size is not an even multiple of the buffer size. Reduce + ** buffer size so that we do not unduly inflate the db size + ** with zero-padding when exporting. */ + if(0 == nSize % 4096) nBuf = 4096; + else if(0 == nSize % 2048) nBuf = 2048; + else if(0 == nSize % 1024) nBuf = 1024; + else nBuf = 512; + } + for( ; 0==rc && nPos<nSize; nPos += nBuf ){ + rc = pFile->pMethods->xRead(pFile, buf, nBuf, nPos); + if( SQLITE_IOERR_SHORT_READ == rc ){ + rc = (nPos + nBuf) < nSize ? rc : 0/*assume EOF*/; + } + if( 0==rc ) rc = xCallback(buf, nBuf); + } + return rc; +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** A proxy for sqlite3_serialize() which serializes the schema zSchema +** of pDb, placing the serialized output in pOut and nOut. nOut may be +** NULL. If zSchema is NULL then "main" is assumed. If pDb or pOut are +** NULL then SQLITE_MISUSE is returned. If allocation of the +** serialized copy fails, SQLITE_NOMEM is returned. On success, 0 is +** returned and `*pOut` will contain a pointer to the memory unless +** mFlags includes SQLITE_SERIALIZE_NOCOPY and the database has no +** contiguous memory representation, in which case `*pOut` will be +** NULL but 0 will be returned. +** +** If `*pOut` is not NULL, the caller is responsible for passing it to +** sqlite3_free() to free it. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_db_serialize( sqlite3 *pDb, const char *zSchema, + unsigned char **pOut, + sqlite3_int64 *nOut, unsigned int mFlags ){ + unsigned char * z; + if( !pDb || !pOut ) return SQLITE_MISUSE; + if( nOut ) *nOut = 0; + z = sqlite3_serialize(pDb, zSchema ? zSchema : "main", nOut, mFlags); + if( z || (SQLITE_SERIALIZE_NOCOPY & mFlags) ){ + *pOut = z; + return 0; + }else{ + return SQLITE_NOMEM; + } +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Creates a new file using the I/O API of the given VFS, containing +** the given number of bytes of the given data. If the file exists, it +** is truncated to the given length and populated with the given +** data. +** +** This function exists so that we can implement the equivalent of +** Emscripten's FS.createDataFile() in a VFS-agnostic way. This +** functionality is intended for use in uploading database files. +** +** Not all VFSes support this functionality, e.g. the "kvvfs" does +** not. +** +** If pVfs is NULL, sqlite3_vfs_find(0) is used. +** +** If zFile is NULL, pVfs is NULL (and sqlite3_vfs_find(0) returns +** NULL), or nData is negative, SQLITE_MISUSE are returned. +** +** On success, it creates a new file with the given name, populated +** with the fist nData bytes of pData. If pData is NULL, the file is +** created and/or truncated to nData bytes. +** +** Whether or not directory components of zFilename are created +** automatically or not is unspecified: that detail is left to the +** VFS. The "opfs" VFS, for example, creates them. +** +** If an error happens while populating or truncating the file, the +** target file will be deleted (if needed) if this function created +** it. If this function did not create it, it is not deleted but may +** be left in an undefined state. +** +** Returns 0 on success. On error, it returns a code described above +** or propagates a code from one of the I/O methods. +** +** Design note: nData is an integer, instead of int64, for WASM +** portability, so that the API can still work in builds where BigInt +** support is disabled or unavailable. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_vfs_create_file( sqlite3_vfs *pVfs, + const char *zFilename, + const unsigned char * pData, + int nData ){ + int rc; + sqlite3_file *pFile = 0; + sqlite3_io_methods const *pIo; + const int openFlags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE; + int flagsOut = 0; + int fileExisted = 0; + int doUnlock = 0; + const unsigned char *pPos = pData; + const int blockSize = 512 + /* Because we are using pFile->pMethods->xWrite() for writing, and + ** it may have a buffer limit related to sqlite3's pager size, we + ** conservatively write in 512-byte blocks (smallest page + ** size). */; + //fprintf(stderr, "pVfs=%p, zFilename=%s, nData=%d\n", pVfs, zFilename, nData); + if( !pVfs ) pVfs = sqlite3_vfs_find(0); + if( !pVfs || !zFilename || nData<0 ) return SQLITE_MISUSE; + pVfs->xAccess(pVfs, zFilename, SQLITE_ACCESS_EXISTS, &fileExisted); + rc = sqlite3OsOpenMalloc(pVfs, zFilename, &pFile, openFlags, &flagsOut); +#if 0 +# define RC fprintf(stderr,"create_file(%s,%s) @%d rc=%d\n", \ + pVfs->zName, zFilename, __LINE__, rc); +#else +# define RC +#endif + RC; + if(rc) return rc; + pIo = pFile->pMethods; + if( pIo->xLock ) { + /* We need xLock() in order to accommodate the OPFS VFS, as it + ** obtains a writeable handle via the lock operation and releases + ** it in xUnlock(). If we don't do those here, we have to add code + ** to the VFS to account check whether it was locked before + ** xFileSize(), xTruncate(), and the like, and release the lock + ** only if it was unlocked when the op was started. */ + rc = pIo->xLock(pFile, SQLITE_LOCK_EXCLUSIVE); + RC; + doUnlock = 0==rc; + } + if( 0==rc ){ + rc = pIo->xTruncate(pFile, nData); + RC; + } + if( 0==rc && 0!=pData && nData>0 ){ + while( 0==rc && nData>0 ){ + const int n = nData>=blockSize ? blockSize : nData; + rc = pIo->xWrite(pFile, pPos, n, (sqlite3_int64)(pPos - pData)); + RC; + nData -= n; + pPos += n; + } + if( 0==rc && nData>0 ){ + assert( nData<blockSize ); + rc = pIo->xWrite(pFile, pPos, nData, + (sqlite3_int64)(pPos - pData)); + RC; + } + } + if( pIo->xUnlock && doUnlock!=0 ){ + pIo->xUnlock(pFile, SQLITE_LOCK_NONE); + } + pIo->xClose(pFile); + if( rc!=0 && 0==fileExisted ){ + pVfs->xDelete(pVfs, zFilename, 1); + } + RC; +#undef RC + return rc; +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Allocates sqlite3KvvfsMethods.nKeySize bytes from +** sqlite3_wasm_pstack_alloc() and returns 0 if that allocation fails, +** else it passes that string to kvstorageMakeKey() and returns a +** NUL-terminated pointer to that string. It is up to the caller to +** use sqlite3_wasm_pstack_restore() to free the returned pointer. +*/ +SQLITE_WASM_KEEP +char * sqlite3_wasm_kvvfsMakeKeyOnPstack(const char *zClass, + const char *zKeyIn){ + assert(sqlite3KvvfsMethods.nKeySize>24); + char *zKeyOut = + (char *)sqlite3_wasm_pstack_alloc(sqlite3KvvfsMethods.nKeySize); + if(zKeyOut){ + kvstorageMakeKey(zClass, zKeyIn, zKeyOut); + } + return zKeyOut; +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Returns the pointer to the singleton object which holds the kvvfs +** I/O methods and associated state. +*/ +SQLITE_WASM_KEEP +sqlite3_kvvfs_methods * sqlite3_wasm_kvvfs_methods(void){ + return &sqlite3KvvfsMethods; +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** This is a proxy for the variadic sqlite3_vtab_config() which passes +** its argument on, or not, to sqlite3_vtab_config(), depending on the +** value of its 2nd argument. Returns the result of +** sqlite3_vtab_config(), or SQLITE_MISUSE if the 2nd arg is not a +** valid value. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_vtab_config(sqlite3 *pDb, int op, int arg){ + switch(op){ + case SQLITE_VTAB_DIRECTONLY: + case SQLITE_VTAB_INNOCUOUS: + return sqlite3_vtab_config(pDb, op); + case SQLITE_VTAB_CONSTRAINT_SUPPORT: + return sqlite3_vtab_config(pDb, op, arg); + default: + return SQLITE_MISUSE; + } +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Wrapper for the variants of sqlite3_db_config() which take +** (int,int*) variadic args. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_db_config_ip(sqlite3 *pDb, int op, int arg1, int* pArg2){ + switch(op){ + case SQLITE_DBCONFIG_ENABLE_FKEY: + case SQLITE_DBCONFIG_ENABLE_TRIGGER: + case SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER: + case SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION: + case SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE: + case SQLITE_DBCONFIG_ENABLE_QPSG: + case SQLITE_DBCONFIG_TRIGGER_EQP: + case SQLITE_DBCONFIG_RESET_DATABASE: + case SQLITE_DBCONFIG_DEFENSIVE: + case SQLITE_DBCONFIG_WRITABLE_SCHEMA: + case SQLITE_DBCONFIG_LEGACY_ALTER_TABLE: + case SQLITE_DBCONFIG_DQS_DML: + case SQLITE_DBCONFIG_DQS_DDL: + case SQLITE_DBCONFIG_ENABLE_VIEW: + case SQLITE_DBCONFIG_LEGACY_FILE_FORMAT: + case SQLITE_DBCONFIG_TRUSTED_SCHEMA: + return sqlite3_db_config(pDb, op, arg1, pArg2); + default: return SQLITE_MISUSE; + } +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Wrapper for the variants of sqlite3_db_config() which take +** (void*,int,int) variadic args. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_db_config_pii(sqlite3 *pDb, int op, void * pArg1, int arg2, int arg3){ + switch(op){ + case SQLITE_DBCONFIG_LOOKASIDE: + return sqlite3_db_config(pDb, op, pArg1, arg2, arg3); + default: return SQLITE_MISUSE; + } +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Wrapper for the variants of sqlite3_db_config() which take +** (const char *) variadic args. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_db_config_s(sqlite3 *pDb, int op, const char *zArg){ + switch(op){ + case SQLITE_DBCONFIG_MAINDBNAME: + return sqlite3_db_config(pDb, op, zArg); + default: return SQLITE_MISUSE; + } +} + + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Binding for combinations of sqlite3_config() arguments which take +** a single integer argument. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_config_i(int op, int arg){ + return sqlite3_config(op, arg); +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Binding for combinations of sqlite3_config() arguments which take +** two int arguments. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_config_ii(int op, int arg1, int arg2){ + return sqlite3_config(op, arg1, arg2); +} + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Binding for combinations of sqlite3_config() arguments which take +** a single i64 argument. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_config_j(int op, sqlite3_int64 arg){ + return sqlite3_config(op, arg); +} + +#if 0 +// Pending removal after verification of a workaround discussed in the +// forum post linked to below. +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings. +** +** Returns a pointer to sqlite3_free(). In compliant browsers the +** return value, when passed to sqlite3.wasm.exports.functionEntry(), +** must resolve to the same function as +** sqlite3.wasm.exports.sqlite3_free. i.e. from a dev console where +** sqlite3 is exported globally, the following must be true: +** +** ``` +** sqlite3.wasm.functionEntry( +** sqlite3.wasm.exports.sqlite3_wasm_ptr_to_sqlite3_free() +** ) === sqlite3.wasm.exports.sqlite3_free +** ``` +** +** Using a function to return this pointer, as opposed to exporting it +** via sqlite3_wasm_enum_json(), is an attempt to work around a +** Safari-specific quirk covered at +** https://sqlite.org/forum/info/e5b20e1feb37a19a. +**/ +SQLITE_WASM_KEEP +void * sqlite3_wasm_ptr_to_sqlite3_free(void){ + return (void*)sqlite3_free; +} +#endif + +#if defined(__EMSCRIPTEN__) && defined(SQLITE_ENABLE_WASMFS) +#include <emscripten/wasmfs.h> + +/* +** This function is NOT part of the sqlite3 public API. It is strictly +** for use by the sqlite project's own JS/WASM bindings, specifically +** only when building with Emscripten's WASMFS support. +** +** This function should only be called if the JS side detects the +** existence of the Origin-Private FileSystem (OPFS) APIs in the +** client. The first time it is called, this function instantiates a +** WASMFS backend impl for OPFS. On success, subsequent calls are +** no-ops. +** +** This function may be passed a "mount point" name, which must have a +** leading "/" and is currently restricted to a single path component, +** e.g. "/foo" is legal but "/foo/" and "/foo/bar" are not. If it is +** NULL or empty, it defaults to "/opfs". +** +** Returns 0 on success, SQLITE_NOMEM if instantiation of the backend +** object fails, SQLITE_IOERR if mkdir() of the zMountPoint dir in +** the virtual FS fails. In builds compiled without SQLITE_ENABLE_WASMFS +** defined, SQLITE_NOTFOUND is returned without side effects. +*/ +SQLITE_WASM_KEEP +int sqlite3_wasm_init_wasmfs(const char *zMountPoint){ + static backend_t pOpfs = 0; + if( !zMountPoint || !*zMountPoint ) zMountPoint = "/opfs"; + if( !pOpfs ){ + pOpfs = wasmfs_create_opfs_backend(); + } + /** It's not enough to instantiate the backend. We have to create a + mountpoint in the VFS and attach the backend to it. */ + if( pOpfs && 0!=access(zMountPoint, F_OK) ){ + /* Note that this check and is not robust but it will + hypothetically suffice for the transient wasm-based virtual + filesystem we're currently running in. */ + const int rc = wasmfs_create_directory(zMountPoint, 0777, pOpfs); + /*emscripten_console_logf("OPFS mkdir(%s) rc=%d", zMountPoint, rc);*/ + if(rc) return SQLITE_IOERR; + } + return pOpfs ? 0 : SQLITE_NOMEM; +} +#else +SQLITE_WASM_KEEP +int sqlite3_wasm_init_wasmfs(const char *zUnused){ + //emscripten_console_warn("WASMFS OPFS is not compiled in."); + if(zUnused){/*unused*/} + return SQLITE_NOTFOUND; +} +#endif /* __EMSCRIPTEN__ && SQLITE_ENABLE_WASMFS */ + +#if SQLITE_WASM_TESTS + +SQLITE_WASM_KEEP +int sqlite3_wasm_test_intptr(int * p){ + return *p = *p * 2; +} + +SQLITE_WASM_KEEP +void * sqlite3_wasm_test_voidptr(void * p){ + return p; +} + +SQLITE_WASM_KEEP +int64_t sqlite3_wasm_test_int64_max(void){ + return (int64_t)0x7fffffffffffffff; +} + +SQLITE_WASM_KEEP +int64_t sqlite3_wasm_test_int64_min(void){ + return ~sqlite3_wasm_test_int64_max(); +} + +SQLITE_WASM_KEEP +int64_t sqlite3_wasm_test_int64_times2(int64_t x){ + return x * 2; +} + +SQLITE_WASM_KEEP +void sqlite3_wasm_test_int64_minmax(int64_t * min, int64_t *max){ + *max = sqlite3_wasm_test_int64_max(); + *min = sqlite3_wasm_test_int64_min(); + /*printf("minmax: min=%lld, max=%lld\n", *min, *max);*/ +} + +SQLITE_WASM_KEEP +int64_t sqlite3_wasm_test_int64ptr(int64_t * p){ + /*printf("sqlite3_wasm_test_int64ptr( @%lld = 0x%llx )\n", (int64_t)p, *p);*/ + return *p = *p * 2; +} + +SQLITE_WASM_KEEP +void sqlite3_wasm_test_stack_overflow(int recurse){ + if(recurse) sqlite3_wasm_test_stack_overflow(recurse); +} + +/* For testing the 'string:dealloc' whwasmutil.xWrap() conversion. */ +SQLITE_WASM_KEEP +char * sqlite3_wasm_test_str_hello(int fail){ + char * s = fail ? 0 : (char *)sqlite3_malloc(6); + if(s){ + memcpy(s, "hello", 5); + s[5] = 0; + } + return s; +} +#endif /* SQLITE_WASM_TESTS */ + +#undef SQLITE_WASM_KEEP |