done

node_modules/better-sqlite3/src/util/bind-map.cpp

@@ -0,0 +1,73 @@
+class BindMap {
+public:
+
+	// This nested class represents a single mapping between a parameter name
+	// and its associated parameter index in a prepared statement.
+	class Pair { friend class BindMap;
+		public:
+
+			inline int GetIndex() {
+				return index;
+			}
+
+			inline v8::Local<v8::String> GetName(v8::Isolate* isolate) {
+				return name.Get(isolate);
+			}
+
+		private:
+
+			explicit Pair(v8::Isolate* isolate, const char* name, int index)
+				: name(isolate, InternalizedFromUtf8(isolate, name, -1)), index(index) {}
+
+			explicit Pair(v8::Isolate* isolate, Pair* pair)
+				: name(isolate, pair->name), index(pair->index) {}
+
+			const v8::Global<v8::String> name;
+			const int index;
+	};
+
+	explicit BindMap(char _) {
+		assert(_ == 0);
+		pairs = NULL;
+		capacity = 0;
+		length = 0;
+	}
+
+	~BindMap() {
+		while (length) pairs[--length].~Pair();
+		FREE_ARRAY<Pair>(pairs);
+	}
+
+	inline Pair* GetPairs() {
+		return pairs;
+	}
+
+	inline int GetSize() {
+		return length;
+	}
+
+	// Adds a pair to the bind map, expanding the capacity if necessary.
+	void Add(v8::Isolate* isolate, const char* name, int index) {
+		assert(name != NULL);
+		if (capacity == length) Grow(isolate);
+		new (pairs + length++) Pair(isolate, name, index);
+	}
+
+private:
+
+	void Grow(v8::Isolate* isolate) {
+		assert(capacity == length);
+		capacity = (capacity << 1) | 2;
+		Pair* new_pairs = ALLOC_ARRAY<Pair>(capacity);
+		for (int i = 0; i < length; ++i) {
+			new (new_pairs + i) Pair(isolate, pairs + i);
+			pairs[i].~Pair();
+		}
+		FREE_ARRAY<Pair>(pairs);
+		pairs = new_pairs;
+	}
+
+	Pair* pairs;
+	int capacity;
+	int length;
+};

node_modules/better-sqlite3/src/util/binder.cpp

@@ -0,0 +1,193 @@
+class Binder {
+public:
+
+	explicit Binder(sqlite3_stmt* _handle) {
+		handle = _handle;
+		param_count = sqlite3_bind_parameter_count(_handle);
+		anon_index = 0;
+		success = true;
+	}
+
+	bool Bind(NODE_ARGUMENTS info, int argc, Statement* stmt) {
+		assert(anon_index == 0);
+		Result result = BindArgs(info, argc, stmt);
+		if (success && result.count != param_count) {
+			if (result.count < param_count) {
+				if (!result.bound_object && stmt->GetBindMap(OnlyIsolate)->GetSize()) {
+					Fail(ThrowTypeError, "Missing named parameters");
+				} else {
+					Fail(ThrowRangeError, "Too few parameter values were provided");
+				}
+			} else {
+				Fail(ThrowRangeError, "Too many parameter values were provided");
+			}
+		}
+		return success;
+	}
+
+private:
+
+	struct Result {
+		int count;
+		bool bound_object;
+	};
+
+	static bool IsPlainObject(v8::Isolate* isolate, v8::Local<v8::Object> obj) {
+		v8::Local<v8::Value> proto = GET_PROTOTYPE(obj);
+		v8::Local<v8::Context> ctx = obj->GetCreationContext().ToLocalChecked();
+		ctx->Enter();
+		v8::Local<v8::Value> baseProto = GET_PROTOTYPE(v8::Object::New(isolate));
+		ctx->Exit();
+		return proto->StrictEquals(baseProto) || proto->StrictEquals(v8::Null(isolate));
+	}
+
+	void Fail(void (*Throw)(const char* _), const char* message) {
+		assert(success == true);
+		assert((Throw == NULL) == (message == NULL));
+		assert(Throw == ThrowError || Throw == ThrowTypeError || Throw == ThrowRangeError || Throw == NULL);
+		if (Throw) Throw(message);
+		success = false;
+	}
+
+	int NextAnonIndex() {
+		while (sqlite3_bind_parameter_name(handle, ++anon_index) != NULL) {}
+		return anon_index;
+	}
+
+	// Binds the value at the given index or throws an appropriate error.
+	void BindValue(v8::Isolate* isolate, v8::Local<v8::Value> value, int index) {
+		int status = Data::BindValueFromJS(isolate, handle, index, value);
+		if (status != SQLITE_OK) {
+			switch (status) {
+				case -1:
+					return Fail(ThrowTypeError, "SQLite3 can only bind numbers, strings, bigints, buffers, and null");
+				case SQLITE_TOOBIG:
+					return Fail(ThrowRangeError, "The bound string, buffer, or bigint is too big");
+				case SQLITE_RANGE:
+					return Fail(ThrowRangeError, "Too many parameter values were provided");
+				case SQLITE_NOMEM:
+					return Fail(ThrowError, "Out of memory");
+				default:
+					return Fail(ThrowError, "An unexpected error occured while trying to bind parameters");
+			}
+			assert(false);
+		}
+	}
+
+	// Binds each value in the array or throws an appropriate error.
+	// The number of successfully bound parameters is returned.
+	int BindArray(v8::Isolate* isolate, v8::Local<v8::Array> arr) {
+		UseContext;
+		uint32_t length = arr->Length();
+		if (length > INT_MAX) {
+			Fail(ThrowRangeError, "Too many parameter values were provided");
+			return 0;
+		}
+		int len = static_cast<int>(length);
+		for (int i = 0; i < len; ++i) {
+			v8::MaybeLocal<v8::Value> maybeValue = arr->Get(ctx, i);
+			if (maybeValue.IsEmpty()) {
+				Fail(NULL, NULL);
+				return i;
+			}
+			BindValue(isolate, maybeValue.ToLocalChecked(), NextAnonIndex());
+			if (!success) {
+				return i;
+			}
+		}
+		return len;
+	}
+
+	// Binds all named parameters using the values found in the given object.
+	// The number of successfully bound parameters is returned.
+	// If a named parameter is missing from the object, an error is thrown.
+	// This should only be invoked once per instance.
+	int BindObject(v8::Isolate* isolate, v8::Local<v8::Object> obj, Statement* stmt) {
+		UseContext;
+		BindMap* bind_map = stmt->GetBindMap(isolate);
+		BindMap::Pair* pairs = bind_map->GetPairs();
+		int len = bind_map->GetSize();
+
+		for (int i = 0; i < len; ++i) {
+			v8::Local<v8::String> key = pairs[i].GetName(isolate);
+
+			// Check if the named parameter was provided.
+			v8::Maybe<bool> has_property = obj->HasOwnProperty(ctx, key);
+			if (has_property.IsNothing()) {
+				Fail(NULL, NULL);
+				return i;
+			}
+			if (!has_property.FromJust()) {
+				v8::String::Utf8Value param_name(isolate, key);
+				Fail(ThrowRangeError, (std::string("Missing named parameter \"") + *param_name + "\"").c_str());
+				return i;
+			}
+
+			// Get the current property value.
+			v8::MaybeLocal<v8::Value> maybeValue = obj->Get(ctx, key);
+			if (maybeValue.IsEmpty()) {
+				Fail(NULL, NULL);
+				return i;
+			}
+
+			BindValue(isolate, maybeValue.ToLocalChecked(), pairs[i].GetIndex());
+			if (!success) {
+				return i;
+			}
+		}
+
+		return len;
+	}
+
+	// Binds all parameters using the values found in the arguments object.
+	// Anonymous parameter values can be directly in the arguments object or in an Array.
+	// Named parameter values can be provided in a plain Object argument.
+	// Only one plain Object argument may be provided.
+	// If an error occurs, an appropriate error is thrown.
+	// The return value is a struct indicating how many parameters were successfully bound
+	// and whether or not it tried to bind an object.
+	Result BindArgs(NODE_ARGUMENTS info, int argc, Statement* stmt) {
+		UseIsolate;
+		int count = 0;
+		bool bound_object = false;
+
+		for (int i = 0; i < argc; ++i) {
+			v8::Local<v8::Value> arg = info[i];
+
+			if (arg->IsArray()) {
+				count += BindArray(isolate, arg.As<v8::Array>());
+				if (!success) break;
+				continue;
+			}
+
+			if (arg->IsObject() && !node::Buffer::HasInstance(arg)) {
+				v8::Local<v8::Object> obj = arg.As<v8::Object>();
+				if (IsPlainObject(isolate, obj)) {
+					if (bound_object) {
+						Fail(ThrowTypeError, "You cannot specify named parameters in two different objects");
+						break;
+					}
+					bound_object = true;
+
+					count += BindObject(isolate, obj, stmt);
+					if (!success) break;
+					continue;
+				} else if (stmt->GetBindMap(isolate)->GetSize()) {
+					Fail(ThrowTypeError, "Named parameters can only be passed within plain objects");
+					break;
+				}
+			}
+
+			BindValue(isolate, arg, NextAnonIndex());
+			if (!success) break;
+			count += 1;
+		}
+
+		return { count, bound_object };
+	}
+
+	sqlite3_stmt* handle;
+	int param_count;
+	int anon_index; // This value should only be used by NextAnonIndex()
+	bool success; // This value should only be set by Fail()
+};

node_modules/better-sqlite3/src/util/constants.cpp

@@ -0,0 +1,172 @@
+class CS {
+public:
+
+	v8::Local<v8::String> Code(v8::Isolate* isolate, int code) {
+		auto element = codes.find(code);
+		if (element != codes.end()) return element->second.Get(isolate);
+		return StringFromUtf8(isolate, (std::string("UNKNOWN_SQLITE_ERROR_") + std::to_string(code)).c_str(), -1);
+	}
+
+	explicit CS(v8::Isolate* isolate) {
+		SetString(isolate, database, "database");
+		SetString(isolate, reader, "reader");
+		SetString(isolate, source, "source");
+		SetString(isolate, memory, "memory");
+		SetString(isolate, readonly, "readonly");
+		SetString(isolate, name, "name");
+		SetString(isolate, next, "next");
+		SetString(isolate, length, "length");
+		SetString(isolate, done, "done");
+		SetString(isolate, value, "value");
+		SetString(isolate, changes, "changes");
+		SetString(isolate, lastInsertRowid, "lastInsertRowid");
+		SetString(isolate, statement, "statement");
+		SetString(isolate, column, "column");
+		SetString(isolate, table, "table");
+		SetString(isolate, type, "type");
+		SetString(isolate, totalPages, "totalPages");
+		SetString(isolate, remainingPages, "remainingPages");
+
+		SetCode(isolate, SQLITE_OK, "SQLITE_OK");
+		SetCode(isolate, SQLITE_ERROR, "SQLITE_ERROR");
+		SetCode(isolate, SQLITE_INTERNAL, "SQLITE_INTERNAL");
+		SetCode(isolate, SQLITE_PERM, "SQLITE_PERM");
+		SetCode(isolate, SQLITE_ABORT, "SQLITE_ABORT");
+		SetCode(isolate, SQLITE_BUSY, "SQLITE_BUSY");
+		SetCode(isolate, SQLITE_LOCKED, "SQLITE_LOCKED");
+		SetCode(isolate, SQLITE_NOMEM, "SQLITE_NOMEM");
+		SetCode(isolate, SQLITE_READONLY, "SQLITE_READONLY");
+		SetCode(isolate, SQLITE_INTERRUPT, "SQLITE_INTERRUPT");
+		SetCode(isolate, SQLITE_IOERR, "SQLITE_IOERR");
+		SetCode(isolate, SQLITE_CORRUPT, "SQLITE_CORRUPT");
+		SetCode(isolate, SQLITE_NOTFOUND, "SQLITE_NOTFOUND");
+		SetCode(isolate, SQLITE_FULL, "SQLITE_FULL");
+		SetCode(isolate, SQLITE_CANTOPEN, "SQLITE_CANTOPEN");
+		SetCode(isolate, SQLITE_PROTOCOL, "SQLITE_PROTOCOL");
+		SetCode(isolate, SQLITE_EMPTY, "SQLITE_EMPTY");
+		SetCode(isolate, SQLITE_SCHEMA, "SQLITE_SCHEMA");
+		SetCode(isolate, SQLITE_TOOBIG, "SQLITE_TOOBIG");
+		SetCode(isolate, SQLITE_CONSTRAINT, "SQLITE_CONSTRAINT");
+		SetCode(isolate, SQLITE_MISMATCH, "SQLITE_MISMATCH");
+		SetCode(isolate, SQLITE_MISUSE, "SQLITE_MISUSE");
+		SetCode(isolate, SQLITE_NOLFS, "SQLITE_NOLFS");
+		SetCode(isolate, SQLITE_AUTH, "SQLITE_AUTH");
+		SetCode(isolate, SQLITE_FORMAT, "SQLITE_FORMAT");
+		SetCode(isolate, SQLITE_RANGE, "SQLITE_RANGE");
+		SetCode(isolate, SQLITE_NOTADB, "SQLITE_NOTADB");
+		SetCode(isolate, SQLITE_NOTICE, "SQLITE_NOTICE");
+		SetCode(isolate, SQLITE_WARNING, "SQLITE_WARNING");
+		SetCode(isolate, SQLITE_ROW, "SQLITE_ROW");
+		SetCode(isolate, SQLITE_DONE, "SQLITE_DONE");
+
+		SetCode(isolate, SQLITE_ERROR_MISSING_COLLSEQ, "SQLITE_ERROR_MISSING_COLLSEQ");
+		SetCode(isolate, SQLITE_ERROR_RETRY, "SQLITE_ERROR_RETRY");
+		SetCode(isolate, SQLITE_ERROR_SNAPSHOT, "SQLITE_ERROR_SNAPSHOT");
+		SetCode(isolate, SQLITE_IOERR_READ, "SQLITE_IOERR_READ");
+		SetCode(isolate, SQLITE_IOERR_SHORT_READ, "SQLITE_IOERR_SHORT_READ");
+		SetCode(isolate, SQLITE_IOERR_WRITE, "SQLITE_IOERR_WRITE");
+		SetCode(isolate, SQLITE_IOERR_FSYNC, "SQLITE_IOERR_FSYNC");
+		SetCode(isolate, SQLITE_IOERR_DIR_FSYNC, "SQLITE_IOERR_DIR_FSYNC");
+		SetCode(isolate, SQLITE_IOERR_TRUNCATE, "SQLITE_IOERR_TRUNCATE");
+		SetCode(isolate, SQLITE_IOERR_FSTAT, "SQLITE_IOERR_FSTAT");
+		SetCode(isolate, SQLITE_IOERR_UNLOCK, "SQLITE_IOERR_UNLOCK");
+		SetCode(isolate, SQLITE_IOERR_RDLOCK, "SQLITE_IOERR_RDLOCK");
+		SetCode(isolate, SQLITE_IOERR_DELETE, "SQLITE_IOERR_DELETE");
+		SetCode(isolate, SQLITE_IOERR_BLOCKED, "SQLITE_IOERR_BLOCKED");
+		SetCode(isolate, SQLITE_IOERR_NOMEM, "SQLITE_IOERR_NOMEM");
+		SetCode(isolate, SQLITE_IOERR_ACCESS, "SQLITE_IOERR_ACCESS");
+		SetCode(isolate, SQLITE_IOERR_CHECKRESERVEDLOCK, "SQLITE_IOERR_CHECKRESERVEDLOCK");
+		SetCode(isolate, SQLITE_IOERR_LOCK, "SQLITE_IOERR_LOCK");
+		SetCode(isolate, SQLITE_IOERR_CLOSE, "SQLITE_IOERR_CLOSE");
+		SetCode(isolate, SQLITE_IOERR_DIR_CLOSE, "SQLITE_IOERR_DIR_CLOSE");
+		SetCode(isolate, SQLITE_IOERR_SHMOPEN, "SQLITE_IOERR_SHMOPEN");
+		SetCode(isolate, SQLITE_IOERR_SHMSIZE, "SQLITE_IOERR_SHMSIZE");
+		SetCode(isolate, SQLITE_IOERR_SHMLOCK, "SQLITE_IOERR_SHMLOCK");
+		SetCode(isolate, SQLITE_IOERR_SHMMAP, "SQLITE_IOERR_SHMMAP");
+		SetCode(isolate, SQLITE_IOERR_SEEK, "SQLITE_IOERR_SEEK");
+		SetCode(isolate, SQLITE_IOERR_DELETE_NOENT, "SQLITE_IOERR_DELETE_NOENT");
+		SetCode(isolate, SQLITE_IOERR_MMAP, "SQLITE_IOERR_MMAP");
+		SetCode(isolate, SQLITE_IOERR_GETTEMPPATH, "SQLITE_IOERR_GETTEMPPATH");
+		SetCode(isolate, SQLITE_IOERR_CONVPATH, "SQLITE_IOERR_CONVPATH");
+		SetCode(isolate, SQLITE_IOERR_VNODE, "SQLITE_IOERR_VNODE");
+		SetCode(isolate, SQLITE_IOERR_AUTH, "SQLITE_IOERR_AUTH");
+		SetCode(isolate, SQLITE_IOERR_BEGIN_ATOMIC, "SQLITE_IOERR_BEGIN_ATOMIC");
+		SetCode(isolate, SQLITE_IOERR_COMMIT_ATOMIC, "SQLITE_IOERR_COMMIT_ATOMIC");
+		SetCode(isolate, SQLITE_IOERR_ROLLBACK_ATOMIC, "SQLITE_IOERR_ROLLBACK_ATOMIC");
+		SetCode(isolate, SQLITE_IOERR_DATA, "SQLITE_IOERR_DATA");
+		SetCode(isolate, SQLITE_IOERR_CORRUPTFS, "SQLITE_IOERR_CORRUPTFS");
+		SetCode(isolate, SQLITE_IOERR_IN_PAGE, "SQLITE_IOERR_IN_PAGE");
+		SetCode(isolate, SQLITE_LOCKED_SHAREDCACHE, "SQLITE_LOCKED_SHAREDCACHE");
+		SetCode(isolate, SQLITE_LOCKED_VTAB, "SQLITE_LOCKED_VTAB");
+		SetCode(isolate, SQLITE_BUSY_RECOVERY, "SQLITE_BUSY_RECOVERY");
+		SetCode(isolate, SQLITE_BUSY_SNAPSHOT, "SQLITE_BUSY_SNAPSHOT");
+		SetCode(isolate, SQLITE_CANTOPEN_NOTEMPDIR, "SQLITE_CANTOPEN_NOTEMPDIR");
+		SetCode(isolate, SQLITE_CANTOPEN_ISDIR, "SQLITE_CANTOPEN_ISDIR");
+		SetCode(isolate, SQLITE_CANTOPEN_FULLPATH, "SQLITE_CANTOPEN_FULLPATH");
+		SetCode(isolate, SQLITE_CANTOPEN_CONVPATH, "SQLITE_CANTOPEN_CONVPATH");
+		SetCode(isolate, SQLITE_CANTOPEN_DIRTYWAL, "SQLITE_CANTOPEN_DIRTYWAL");
+		SetCode(isolate, SQLITE_CANTOPEN_SYMLINK, "SQLITE_CANTOPEN_SYMLINK");
+		SetCode(isolate, SQLITE_CORRUPT_VTAB, "SQLITE_CORRUPT_VTAB");
+		SetCode(isolate, SQLITE_CORRUPT_SEQUENCE, "SQLITE_CORRUPT_SEQUENCE");
+		SetCode(isolate, SQLITE_CORRUPT_INDEX, "SQLITE_CORRUPT_INDEX");
+		SetCode(isolate, SQLITE_READONLY_RECOVERY, "SQLITE_READONLY_RECOVERY");
+		SetCode(isolate, SQLITE_READONLY_CANTLOCK, "SQLITE_READONLY_CANTLOCK");
+		SetCode(isolate, SQLITE_READONLY_ROLLBACK, "SQLITE_READONLY_ROLLBACK");
+		SetCode(isolate, SQLITE_READONLY_DBMOVED, "SQLITE_READONLY_DBMOVED");
+		SetCode(isolate, SQLITE_READONLY_CANTINIT, "SQLITE_READONLY_CANTINIT");
+		SetCode(isolate, SQLITE_READONLY_DIRECTORY, "SQLITE_READONLY_DIRECTORY");
+		SetCode(isolate, SQLITE_ABORT_ROLLBACK, "SQLITE_ABORT_ROLLBACK");
+		SetCode(isolate, SQLITE_CONSTRAINT_CHECK, "SQLITE_CONSTRAINT_CHECK");
+		SetCode(isolate, SQLITE_CONSTRAINT_COMMITHOOK, "SQLITE_CONSTRAINT_COMMITHOOK");
+		SetCode(isolate, SQLITE_CONSTRAINT_FOREIGNKEY, "SQLITE_CONSTRAINT_FOREIGNKEY");
+		SetCode(isolate, SQLITE_CONSTRAINT_FUNCTION, "SQLITE_CONSTRAINT_FUNCTION");
+		SetCode(isolate, SQLITE_CONSTRAINT_NOTNULL, "SQLITE_CONSTRAINT_NOTNULL");
+		SetCode(isolate, SQLITE_CONSTRAINT_PRIMARYKEY, "SQLITE_CONSTRAINT_PRIMARYKEY");
+		SetCode(isolate, SQLITE_CONSTRAINT_TRIGGER, "SQLITE_CONSTRAINT_TRIGGER");
+		SetCode(isolate, SQLITE_CONSTRAINT_UNIQUE, "SQLITE_CONSTRAINT_UNIQUE");
+		SetCode(isolate, SQLITE_CONSTRAINT_VTAB, "SQLITE_CONSTRAINT_VTAB");
+		SetCode(isolate, SQLITE_CONSTRAINT_ROWID, "SQLITE_CONSTRAINT_ROWID");
+		SetCode(isolate, SQLITE_CONSTRAINT_PINNED, "SQLITE_CONSTRAINT_PINNED");
+		SetCode(isolate, SQLITE_CONSTRAINT_DATATYPE, "SQLITE_CONSTRAINT_DATATYPE");
+		SetCode(isolate, SQLITE_NOTICE_RECOVER_WAL, "SQLITE_NOTICE_RECOVER_WAL");
+		SetCode(isolate, SQLITE_NOTICE_RECOVER_ROLLBACK, "SQLITE_NOTICE_RECOVER_ROLLBACK");
+		SetCode(isolate, SQLITE_NOTICE_RBU, "SQLITE_NOTICE_RBU");
+		SetCode(isolate, SQLITE_WARNING_AUTOINDEX, "SQLITE_WARNING_AUTOINDEX");
+		SetCode(isolate, SQLITE_AUTH_USER, "SQLITE_AUTH_USER");
+		SetCode(isolate, SQLITE_OK_LOAD_PERMANENTLY, "SQLITE_OK_LOAD_PERMANENTLY");
+		SetCode(isolate, SQLITE_OK_SYMLINK, "SQLITE_OK_SYMLINK");
+	}
+
+	v8::Global<v8::String> database;
+	v8::Global<v8::String> reader;
+	v8::Global<v8::String> source;
+	v8::Global<v8::String> memory;
+	v8::Global<v8::String> readonly;
+	v8::Global<v8::String> name;
+	v8::Global<v8::String> next;
+	v8::Global<v8::String> length;
+	v8::Global<v8::String> done;
+	v8::Global<v8::String> value;
+	v8::Global<v8::String> changes;
+	v8::Global<v8::String> lastInsertRowid;
+	v8::Global<v8::String> statement;
+	v8::Global<v8::String> column;
+	v8::Global<v8::String> table;
+	v8::Global<v8::String> type;
+	v8::Global<v8::String> totalPages;
+	v8::Global<v8::String> remainingPages;
+
+private:
+
+	static void SetString(v8::Isolate* isolate, v8::Global<v8::String>& constant, const char* str) {
+		constant.Reset(isolate, InternalizedFromLatin1(isolate, str));
+	}
+
+	void SetCode(v8::Isolate* isolate, int code, const char* str) {
+		codes.emplace(std::piecewise_construct,
+			std::forward_as_tuple(code),
+			std::forward_as_tuple(isolate, InternalizedFromLatin1(isolate, str)));
+	}
+
+	std::unordered_map<int, v8::Global<v8::String> > codes;
+};

node_modules/better-sqlite3/src/util/custom-aggregate.cpp

@@ -0,0 +1,121 @@
+class CustomAggregate : public CustomFunction {
+public:
+
+	explicit CustomAggregate(
+		v8::Isolate* isolate,
+		Database* db,
+		const char* name,
+		v8::Local<v8::Value> start,
+		v8::Local<v8::Function> step,
+		v8::Local<v8::Value> inverse,
+		v8::Local<v8::Value> result,
+		bool safe_ints
+	) :
+		CustomFunction(isolate, db, name, step, safe_ints),
+		invoke_result(result->IsFunction()),
+		invoke_start(start->IsFunction()),
+		inverse(isolate, inverse->IsFunction() ? inverse.As<v8::Function>() : v8::Local<v8::Function>()),
+		result(isolate, result->IsFunction() ? result.As<v8::Function>() : v8::Local<v8::Function>()),
+		start(isolate, start) {}
+
+	static void xStep(sqlite3_context* invocation, int argc, sqlite3_value** argv) {
+		xStepBase(invocation, argc, argv, &CustomAggregate::fn);
+	}
+
+	static void xInverse(sqlite3_context* invocation, int argc, sqlite3_value** argv) {
+		xStepBase(invocation, argc, argv, &CustomAggregate::inverse);
+	}
+
+	static void xValue(sqlite3_context* invocation) {
+		xValueBase(invocation, false);
+	}
+
+	static void xFinal(sqlite3_context* invocation) {
+		xValueBase(invocation, true);
+	}
+
+private:
+
+	static inline void xStepBase(sqlite3_context* invocation, int argc, sqlite3_value** argv, const v8::Global<v8::Function> CustomAggregate::*ptrtm) {
+		AGGREGATE_START();
+
+		v8::Local<v8::Value> args_fast[5];
+		v8::Local<v8::Value>* args = argc <= 4 ? args_fast : ALLOC_ARRAY<v8::Local<v8::Value>>(argc + 1);
+		args[0] = acc->value.Get(isolate);
+		if (argc != 0) Data::GetArgumentsJS(isolate, args + 1, argv, argc, self->safe_ints);
+
+		v8::MaybeLocal<v8::Value> maybeReturnValue = (self->*ptrtm).Get(isolate)->Call(OnlyContext, v8::Undefined(isolate), argc + 1, args);
+		if (args != args_fast) delete[] args;
+
+		if (maybeReturnValue.IsEmpty()) {
+			self->PropagateJSError(invocation);
+		} else {
+			v8::Local<v8::Value> returnValue = maybeReturnValue.ToLocalChecked();
+			if (!returnValue->IsUndefined()) acc->value.Reset(isolate, returnValue);
+		}
+	}
+
+	static inline void xValueBase(sqlite3_context* invocation, bool is_final) {
+		AGGREGATE_START();
+
+		if (!is_final) {
+			acc->is_window = true;
+		} else if (acc->is_window) {
+			DestroyAccumulator(invocation);
+			return;
+		}
+
+		v8::Local<v8::Value> result = acc->value.Get(isolate);
+		if (self->invoke_result) {
+			v8::MaybeLocal<v8::Value> maybeResult = self->result.Get(isolate)->Call(OnlyContext, v8::Undefined(isolate), 1, &result);
+			if (maybeResult.IsEmpty()) {
+				self->PropagateJSError(invocation);
+				return;
+			}
+			result = maybeResult.ToLocalChecked();
+		}
+
+		Data::ResultValueFromJS(isolate, invocation, result, self);
+		if (is_final) DestroyAccumulator(invocation);
+	}
+
+	struct Accumulator { public:
+		v8::Global<v8::Value> value;
+		bool initialized;
+		bool is_window;
+	};
+
+	Accumulator* GetAccumulator(sqlite3_context* invocation) {
+		Accumulator* acc = static_cast<Accumulator*>(sqlite3_aggregate_context(invocation, sizeof(Accumulator)));
+		if (!acc->initialized) {
+			assert(acc->value.IsEmpty());
+			acc->initialized = true;
+			if (invoke_start) {
+				v8::MaybeLocal<v8::Value> maybeSeed = start.Get(isolate).As<v8::Function>()->Call(OnlyContext, v8::Undefined(isolate), 0, NULL);
+				if (maybeSeed.IsEmpty()) PropagateJSError(invocation);
+				else acc->value.Reset(isolate, maybeSeed.ToLocalChecked());
+			} else {
+				assert(!start.IsEmpty());
+				acc->value.Reset(isolate, start);
+			}
+		}
+		return acc;
+	}
+
+	static void DestroyAccumulator(sqlite3_context* invocation) {
+		Accumulator* acc = static_cast<Accumulator*>(sqlite3_aggregate_context(invocation, sizeof(Accumulator)));
+		assert(acc->initialized);
+		acc->value.Reset();
+	}
+
+	void PropagateJSError(sqlite3_context* invocation) {
+		DestroyAccumulator(invocation);
+		CustomFunction::PropagateJSError(invocation);
+	}
+
+	const bool invoke_result;
+	const bool invoke_start;
+	const v8::Global<v8::Function> inverse;
+	const v8::Global<v8::Function> result;
+	const v8::Global<v8::Value> start;
+};

node_modules/better-sqlite3/src/util/custom-function.cpp

@@ -0,0 +1,59 @@
+class CustomFunction : protected DataConverter {
+public:
+
+	explicit CustomFunction(
+		v8::Isolate* isolate,
+		Database* db,
+		const char* name,
+		v8::Local<v8::Function> fn,
+		bool safe_ints
+	) :
+		name(name),
+		db(db),
+		isolate(isolate),
+		fn(isolate, fn),
+		safe_ints(safe_ints) {}
+
+	virtual ~CustomFunction() {}
+
+	static void xDestroy(void* self) {
+		delete static_cast<CustomFunction*>(self);
+	}
+
+	static void xFunc(sqlite3_context* invocation, int argc, sqlite3_value** argv) {
+		FUNCTION_START();
+
+		v8::Local<v8::Value> args_fast[4];
+		v8::Local<v8::Value>* args = NULL;
+		if (argc != 0) {
+			args = argc <= 4 ? args_fast : ALLOC_ARRAY<v8::Local<v8::Value>>(argc);
+			Data::GetArgumentsJS(isolate, args, argv, argc, self->safe_ints);
+		}
+
+		v8::MaybeLocal<v8::Value> maybeReturnValue = self->fn.Get(isolate)->Call(OnlyContext, v8::Undefined(isolate), argc, args);
+		if (args != args_fast) delete[] args;
+
+		if (maybeReturnValue.IsEmpty()) self->PropagateJSError(invocation);
+		else Data::ResultValueFromJS(isolate, invocation, maybeReturnValue.ToLocalChecked(), self);
+	}
+
+protected:
+
+	void PropagateJSError(sqlite3_context* invocation) {
+		assert(db->GetState()->was_js_error == false);
+		db->GetState()->was_js_error = true;
+		sqlite3_result_error(invocation, "", 0);
+	}
+
+	std::string GetDataErrorPrefix() {
+		return std::string("User-defined function ") + name + "() returned";
+	}
+
+private:
+	const std::string name;
+	Database* const db;
+protected:
+	v8::Isolate* const isolate;
+	const v8::Global<v8::Function> fn;
+	const bool safe_ints;
+};

node_modules/better-sqlite3/src/util/custom-table.cpp

@@ -0,0 +1,409 @@
+class CustomTable {
+public:
+
+	explicit CustomTable(
+		v8::Isolate* isolate,
+		Database* db,
+		const char* name,
+		v8::Local<v8::Function> factory
+	) :
+		addon(db->GetAddon()),
+		isolate(isolate),
+		db(db),
+		name(name),
+		factory(isolate, factory) {}
+
+	static void Destructor(void* self) {
+		delete static_cast<CustomTable*>(self);
+	}
+
+	static sqlite3_module MODULE;
+	static sqlite3_module EPONYMOUS_MODULE;
+
+private:
+
+	// This nested class is instantiated on each CREATE VIRTUAL TABLE statement.
+	class VTab { friend class CustomTable;
+		explicit VTab(
+			CustomTable* parent,
+			v8::Local<v8::Function> generator,
+			std::vector<std::string> parameter_names,
+			bool safe_ints
+		) :
+			parent(parent),
+			parameter_count(parameter_names.size()),
+			safe_ints(safe_ints),
+			generator(parent->isolate, generator),
+			parameter_names(parameter_names) {
+			((void)base);
+		}
+
+		static inline CustomTable::VTab* Upcast(sqlite3_vtab* vtab) {
+			return reinterpret_cast<VTab*>(vtab);
+		}
+
+		inline sqlite3_vtab* Downcast() {
+			return reinterpret_cast<sqlite3_vtab*>(this);
+		}
+
+		sqlite3_vtab base;
+		CustomTable * const parent;
+		const int parameter_count;
+		const bool safe_ints;
+		const v8::Global<v8::Function> generator;
+		const std::vector<std::string> parameter_names;
+	};
+
+	// This nested class is instantiated each time a virtual table is scanned.
+	class Cursor { friend class CustomTable;
+		static inline CustomTable::Cursor* Upcast(sqlite3_vtab_cursor* cursor) {
+			return reinterpret_cast<Cursor*>(cursor);
+		}
+
+		inline sqlite3_vtab_cursor* Downcast() {
+			return reinterpret_cast<sqlite3_vtab_cursor*>(this);
+		}
+
+		inline CustomTable::VTab* GetVTab() {
+			return VTab::Upcast(base.pVtab);
+		}
+
+		sqlite3_vtab_cursor base;
+		v8::Global<v8::Object> iterator;
+		v8::Global<v8::Function> next;
+		v8::Global<v8::Array> row;
+		bool done;
+		sqlite_int64 rowid;
+	};
+
+	// This nested class is used by Data::ResultValueFromJS to report errors.
+	class TempDataConverter : DataConverter { friend class CustomTable;
+		explicit TempDataConverter(CustomTable* parent) :
+			parent(parent),
+			status(SQLITE_OK) {}
+
+		void PropagateJSError(sqlite3_context* invocation) {
+			status = SQLITE_ERROR;
+			parent->PropagateJSError();
+		}
+
+		std::string GetDataErrorPrefix() {
+			return std::string("Virtual table module \"") + parent->name + "\" yielded";
+		}
+
+		CustomTable * const parent;
+		int status;
+	};
+
+	// Although this function does nothing, we cannot use xConnect directly,
+	// because that would cause SQLite to register an eponymous virtual table.
+	static int xCreate(sqlite3* db_handle, void* _self, int argc, const char* const * argv, sqlite3_vtab** output, char** errOutput) {
+		return xConnect(db_handle, _self, argc, argv, output, errOutput);
+	}
+
+	// This method uses the factory function to instantiate a new virtual table.
+	static int xConnect(sqlite3* db_handle, void* _self, int argc, const char* const * argv, sqlite3_vtab** output, char** errOutput) {
+		CustomTable* self = static_cast<CustomTable*>(_self);
+		v8::Isolate* isolate = self->isolate;
+		v8::HandleScope scope(isolate);
+		UseContext;
+
+		v8::Local<v8::Value>* args = ALLOC_ARRAY<v8::Local<v8::Value>>(argc);
+		for (int i = 0; i < argc; ++i) {
+			args[i] = StringFromUtf8(isolate, argv[i], -1);
+		}
+
+		// Run the factory function to receive a new virtual table definition.
+		v8::MaybeLocal<v8::Value> maybeReturnValue = self->factory.Get(isolate)->Call(ctx, v8::Undefined(isolate), argc, args);
+		delete[] args;
+
+		if (maybeReturnValue.IsEmpty()) {
+			self->PropagateJSError();
+			return SQLITE_ERROR;
+		}
+
+		// Extract each part of the virtual table definition.
+		v8::Local<v8::Array> returnValue = maybeReturnValue.ToLocalChecked().As<v8::Array>();
+		v8::Local<v8::String> sqlString = returnValue->Get(ctx, 0).ToLocalChecked().As<v8::String>();
+		v8::Local<v8::Function> generator = returnValue->Get(ctx, 1).ToLocalChecked().As<v8::Function>();
+		v8::Local<v8::Array> parameterNames = returnValue->Get(ctx, 2).ToLocalChecked().As<v8::Array>();
+		int safe_ints = returnValue->Get(ctx, 3).ToLocalChecked().As<v8::Int32>()->Value();
+		bool direct_only = returnValue->Get(ctx, 4).ToLocalChecked().As<v8::Boolean>()->Value();
+
+		v8::String::Utf8Value sql(isolate, sqlString);
+		safe_ints = safe_ints < 2 ? safe_ints : static_cast<int>(self->db->GetState()->safe_ints);
+
+		// Copy the parameter names into a std::vector.
+		std::vector<std::string> parameter_names;
+		for (int i = 0, len = parameterNames->Length(); i < len; ++i) {
+			v8::Local<v8::String> parameterName = parameterNames->Get(ctx, i).ToLocalChecked().As<v8::String>();
+			v8::String::Utf8Value parameter_name(isolate, parameterName);
+			parameter_names.emplace_back(*parameter_name);
+		}
+
+		// Pass our SQL table definition to SQLite (this should never fail).
+		if (sqlite3_declare_vtab(db_handle, *sql) != SQLITE_OK) {
+			*errOutput = sqlite3_mprintf("failed to declare virtual table \"%s\"", argv[2]);
+			return SQLITE_ERROR;
+		}
+		if (direct_only && sqlite3_vtab_config(db_handle, SQLITE_VTAB_DIRECTONLY) != SQLITE_OK) {
+			*errOutput = sqlite3_mprintf("failed to configure virtual table \"%s\"", argv[2]);
+			return SQLITE_ERROR;
+		}
+
+		// Return the successfully created virtual table.
+		*output = (new VTab(self, generator, parameter_names, safe_ints))->Downcast();
+		return SQLITE_OK;
+	}
+
+	static int xDisconnect(sqlite3_vtab* vtab) {
+		delete VTab::Upcast(vtab);
+		return SQLITE_OK;
+	}
+
+	static int xOpen(sqlite3_vtab* vtab, sqlite3_vtab_cursor** output) {
+		*output = (new Cursor())->Downcast();
+		return SQLITE_OK;
+	}
+
+	static int xClose(sqlite3_vtab_cursor* cursor) {
+		delete Cursor::Upcast(cursor);
+		return SQLITE_OK;
+	}
+
+	// This method uses a fresh cursor to start a new scan of a virtual table.
+	// The args and idxNum are provided by xBestIndex (idxStr is unused).
+	// idxNum is a bitmap that provides the proper indices of the received args.
+	static int xFilter(sqlite3_vtab_cursor* _cursor, int idxNum, const char* idxStr, int argc, sqlite3_value** argv) {
+		Cursor* cursor = Cursor::Upcast(_cursor);
+		VTab* vtab = cursor->GetVTab();
+		CustomTable* self = vtab->parent;
+		Addon* addon = self->addon;
+		v8::Isolate* isolate = self->isolate;
+		v8::HandleScope scope(isolate);
+		UseContext;
+
+		// Convert the SQLite arguments into JavaScript arguments. Note that
+		// the values in argv may be in the wrong order, so we fix that here.
+		v8::Local<v8::Value> args_fast[4];
+		v8::Local<v8::Value>* args = NULL;
+		int parameter_count = vtab->parameter_count;
+		if (parameter_count != 0) {
+			args = parameter_count <= 4 ? args_fast : ALLOC_ARRAY<v8::Local<v8::Value>>(parameter_count);
+			int argn = 0;
+			bool safe_ints = vtab->safe_ints;
+			for (int i = 0; i < parameter_count; ++i) {
+				if (idxNum & 1 << i) {
+					args[i] = Data::GetValueJS(isolate, argv[argn++], safe_ints);
+					// If any arguments are NULL, the result set is necessarily
+					// empty, so don't bother to run the generator function.
+					if (args[i]->IsNull()) {
+						if (args != args_fast) delete[] args;
+						cursor->done = true;
+						return SQLITE_OK;
+					}
+				} else {
+					args[i] = v8::Undefined(isolate);
+				}
+			}
+		}
+
+		// Invoke the generator function to create a new iterator.
+		v8::MaybeLocal<v8::Value> maybeIterator = vtab->generator.Get(isolate)->Call(ctx, v8::Undefined(isolate), parameter_count, args);
+		if (args != args_fast) delete[] args;
+
+		if (maybeIterator.IsEmpty()) {
+			self->PropagateJSError();
+			return SQLITE_ERROR;
+		}
+
+		// Store the iterator and its next() method; we'll be using it a lot.
+		v8::Local<v8::Object> iterator = maybeIterator.ToLocalChecked().As<v8::Object>();
+		v8::Local<v8::Function> next = iterator->Get(ctx, addon->cs.next.Get(isolate)).ToLocalChecked().As<v8::Function>();
+		cursor->iterator.Reset(isolate, iterator);
+		cursor->next.Reset(isolate, next);
+		cursor->rowid = 0;
+
+		// Advance the iterator/cursor to the first row.
+		return xNext(cursor->Downcast());
+	}
+
+	// This method advances a virtual table's cursor to the next row.
+	// SQLite will call this method repeatedly, driving the generator function.
+	static int xNext(sqlite3_vtab_cursor* _cursor) {
+		Cursor* cursor = Cursor::Upcast(_cursor);
+		CustomTable* self = cursor->GetVTab()->parent;
+		Addon* addon = self->addon;
+		v8::Isolate* isolate = self->isolate;
+		v8::HandleScope scope(isolate);
+		UseContext;
+
+		v8::Local<v8::Object> iterator = cursor->iterator.Get(isolate);
+		v8::Local<v8::Function> next = cursor->next.Get(isolate);
+
+		v8::MaybeLocal<v8::Value> maybeRecord = next->Call(ctx, iterator, 0, NULL);
+		if (maybeRecord.IsEmpty()) {
+			self->PropagateJSError();
+			return SQLITE_ERROR;
+		}
+
+		v8::Local<v8::Object> record = maybeRecord.ToLocalChecked().As<v8::Object>();
+		bool done = record->Get(ctx, addon->cs.done.Get(isolate)).ToLocalChecked().As<v8::Boolean>()->Value();
+		if (!done) {
+			cursor->row.Reset(isolate, record->Get(ctx, addon->cs.value.Get(isolate)).ToLocalChecked().As<v8::Array>());
+		}
+		cursor->done = done;
+		cursor->rowid += 1;
+
+		return SQLITE_OK;
+	}
+
+	// If this method returns 1, SQLite will stop scanning the virtual table.
+	static int xEof(sqlite3_vtab_cursor* cursor) {
+		return Cursor::Upcast(cursor)->done;
+	}
+
+	// This method extracts some column from the cursor's current row.
+	static int xColumn(sqlite3_vtab_cursor* _cursor, sqlite3_context* invocation, int column) {
+		Cursor* cursor = Cursor::Upcast(_cursor);
+		CustomTable* self = cursor->GetVTab()->parent;
+		TempDataConverter temp_data_converter(self);
+		v8::Isolate* isolate = self->isolate;
+		v8::HandleScope scope(isolate);
+
+		v8::Local<v8::Array> row = cursor->row.Get(isolate);
+		v8::MaybeLocal<v8::Value> maybeColumnValue = row->Get(OnlyContext, column);
+		if (maybeColumnValue.IsEmpty()) {
+			temp_data_converter.PropagateJSError(NULL);
+		} else {
+			Data::ResultValueFromJS(isolate, invocation, maybeColumnValue.ToLocalChecked(), &temp_data_converter);
+		}
+		return temp_data_converter.status;
+	}
+
+	// This method outputs the rowid of the cursor's current row.
+	static int xRowid(sqlite3_vtab_cursor* cursor, sqlite_int64* output) {
+		*output = Cursor::Upcast(cursor)->rowid;
+		return SQLITE_OK;
+	}
+
+	// This method tells SQLite how to *plan* queries on our virtual table.
+	// It gets invoked (typically multiple times) during db.prepare().
+	static int xBestIndex(sqlite3_vtab* vtab, sqlite3_index_info* output) {
+		int parameter_count = VTab::Upcast(vtab)->parameter_count;
+		int argument_count = 0;
+		std::vector<std::pair<int, int>> forwarded;
+
+		for (int i = 0, len = output->nConstraint; i < len; ++i) {
+			auto item = output->aConstraint[i];
+
+			// The SQLITE_INDEX_CONSTRAINT_LIMIT and SQLITE_INDEX_CONSTRAINT_OFFSET
+			// operators have no left-hand operand, and so for those operators the
+			// corresponding item.iColumn is meaningless.
+			// We don't care those constraints.
+			if (item.op == SQLITE_INDEX_CONSTRAINT_LIMIT || item.op == SQLITE_INDEX_CONSTRAINT_OFFSET) {
+				continue;
+			}
+			// We only care about constraints on parameters, not regular columns.
+			if (item.iColumn >= 0 && item.iColumn < parameter_count) {
+				if (item.op != SQLITE_INDEX_CONSTRAINT_EQ) {
+					sqlite3_free(vtab->zErrMsg);
+					vtab->zErrMsg = sqlite3_mprintf(
+						"virtual table parameter \"%s\" can only be constrained by the '=' operator",
+						VTab::Upcast(vtab)->parameter_names.at(item.iColumn).c_str());
+					return SQLITE_ERROR;
+				}
+				if (!item.usable) {
+					// Don't allow SQLite to make plans that ignore arguments.
+					// Otherwise, a user could pass arguments, but then they
+					// could appear undefined in the generator function.
+					return SQLITE_CONSTRAINT;
+				}
+				forwarded.emplace_back(item.iColumn, i);
+			}
+		}
+
+		// Tell SQLite to forward arguments to xFilter.
+		std::sort(forwarded.begin(), forwarded.end());
+		for (std::pair<int, int> pair : forwarded) {
+			int bit = 1 << pair.first;
+			if (!(output->idxNum & bit)) {
+				output->idxNum |= bit;
+				output->aConstraintUsage[pair.second].argvIndex = ++argument_count;
+				output->aConstraintUsage[pair.second].omit = 1;
+			}
+		}
+
+		// Use a very high estimated cost so SQLite is not tempted to invoke the
+		// generator function within a loop, if it can be avoided.
+		output->estimatedCost = output->estimatedRows = 1000000000 / (argument_count + 1);
+		return SQLITE_OK;
+	}
+
+	void PropagateJSError() {
+		assert(db->GetState()->was_js_error == false);
+		db->GetState()->was_js_error = true;
+	}
+
+	Addon* const addon;
+	v8::Isolate* const isolate;
+	Database* const db;
+	const std::string name;
+	const v8::Global<v8::Function> factory;
+};
+
+sqlite3_module CustomTable::MODULE = {
+	0,                            /* iVersion */
+	xCreate,                      /* xCreate */
+	xConnect,                     /* xConnect */
+	xBestIndex,                   /* xBestIndex */
+	xDisconnect,                  /* xDisconnect */
+	xDisconnect,                  /* xDestroy */
+	xOpen,                        /* xOpen */
+	xClose,                       /* xClose */
+	xFilter,                      /* xFilter */
+	xNext,                        /* xNext */
+	xEof,                         /* xEof */
+	xColumn,                      /* xColumn */
+	xRowid,                       /* xRowid */
+	NULL,                         /* xUpdate */
+	NULL,                         /* xBegin */
+	NULL,                         /* xSync */
+	NULL,                         /* xCommit */
+	NULL,                         /* xRollback */
+	NULL,                         /* xFindMethod */
+	NULL,                         /* xRename */
+	NULL,                         /* xSavepoint */
+	NULL,                         /* xRelease */
+	NULL,                         /* xRollbackTo */
+	NULL,                         /* xShadowName */
+	NULL                          /* xIntegrity */
+};
+
+sqlite3_module CustomTable::EPONYMOUS_MODULE = {
+	0,                            /* iVersion */
+	NULL,                         /* xCreate */
+	xConnect,                     /* xConnect */
+	xBestIndex,                   /* xBestIndex */
+	xDisconnect,                  /* xDisconnect */
+	xDisconnect,                  /* xDestroy */
+	xOpen,                        /* xOpen */
+	xClose,                       /* xClose */
+	xFilter,                      /* xFilter */
+	xNext,                        /* xNext */
+	xEof,                         /* xEof */
+	xColumn,                      /* xColumn */
+	xRowid,                       /* xRowid */
+	NULL,                         /* xUpdate */
+	NULL,                         /* xBegin */
+	NULL,                         /* xSync */
+	NULL,                         /* xCommit */
+	NULL,                         /* xRollback */
+	NULL,                         /* xFindMethod */
+	NULL,                         /* xRename */
+	NULL,                         /* xSavepoint */
+	NULL,                         /* xRelease */
+	NULL,                         /* xRollbackTo */
+	NULL,                         /* xShadowName */
+	NULL                          /* xIntegrity */
+};

node_modules/better-sqlite3/src/util/data-converter.cpp

@@ -0,0 +1,17 @@
+class DataConverter {
+public:
+
+	void ThrowDataConversionError(sqlite3_context* invocation, bool isBigInt) {
+		if (isBigInt) {
+			ThrowRangeError((GetDataErrorPrefix() + " a bigint that was too big").c_str());
+		} else {
+			ThrowTypeError((GetDataErrorPrefix() + " an invalid value").c_str());
+		}
+		PropagateJSError(invocation);
+	}
+
+protected:
+
+	virtual void PropagateJSError(sqlite3_context* invocation) = 0;
+	virtual std::string GetDataErrorPrefix() = 0;
+};

node_modules/better-sqlite3/src/util/data.cpp

@@ -0,0 +1,194 @@
+#define JS_VALUE_TO_SQLITE(to, value, isolate, ...)                            \
+	if (value->IsNumber()) {                                                   \
+		return sqlite3_##to##_double(                                          \
+			__VA_ARGS__,                                                       \
+			value.As<v8::Number>()->Value()                                    \
+		);                                                                     \
+	} else if (value->IsBigInt()) {                                            \
+		bool lossless;                                                         \
+		int64_t v = value.As<v8::BigInt>()->Int64Value(&lossless);             \
+		if (lossless) {                                                        \
+			return sqlite3_##to##_int64(__VA_ARGS__, v);                       \
+		}                                                                      \
+	} else if (value->IsString()) {                                            \
+		v8::String::Utf8Value utf8(isolate, value.As<v8::String>());           \
+		return sqlite3_##to##_text(                                            \
+			__VA_ARGS__,                                                       \
+			*utf8,                                                             \
+			utf8.length(),                                                     \
+			SQLITE_TRANSIENT                                                   \
+		);                                                                     \
+	} else if (node::Buffer::HasInstance(value)) {                             \
+		const char* data = node::Buffer::Data(value);                          \
+		return sqlite3_##to##_blob(                                            \
+			__VA_ARGS__,                                                       \
+			data ? data : "",                                                  \
+			node::Buffer::Length(value),                                       \
+			SQLITE_TRANSIENT                                                   \
+		);                                                                     \
+	} else if (value->IsNull() || value->IsUndefined()) {                      \
+		return sqlite3_##to##_null(__VA_ARGS__);                               \
+	}
+
+#define SQLITE_VALUE_TO_JS(from, isolate, safe_ints, ...)                      \
+	switch (sqlite3_##from##_type(__VA_ARGS__)) {                              \
+	case SQLITE_INTEGER:                                                       \
+		if (safe_ints) {                                                       \
+			return v8::BigInt::New(                                            \
+				isolate,                                                       \
+				sqlite3_##from##_int64(__VA_ARGS__)                            \
+			);                                                                 \
+		}                                                                      \
+	case SQLITE_FLOAT:                                                         \
+		return v8::Number::New(                                                \
+			isolate,                                                           \
+			sqlite3_##from##_double(__VA_ARGS__)                               \
+		);                                                                     \
+	case SQLITE_TEXT:                                                          \
+		return StringFromUtf8(                                                 \
+			isolate,                                                           \
+			reinterpret_cast<const char*>(sqlite3_##from##_text(__VA_ARGS__)), \
+			sqlite3_##from##_bytes(__VA_ARGS__)                                \
+		);                                                                     \
+	case SQLITE_BLOB:                                                          \
+		return node::Buffer::Copy(                                             \
+			isolate,                                                           \
+			static_cast<const char*>(sqlite3_##from##_blob(__VA_ARGS__)),      \
+			sqlite3_##from##_bytes(__VA_ARGS__)                                \
+		).ToLocalChecked();                                                    \
+	default:                                                                   \
+		assert(sqlite3_##from##_type(__VA_ARGS__) == SQLITE_NULL);             \
+		return v8::Null(isolate);                                              \
+	}                                                                          \
+	assert(false);
+
+namespace Data {
+
+	static const char FLAT = 0;
+	static const char PLUCK = 1;
+	static const char EXPAND = 2;
+	static const char RAW = 3;
+
+	v8::Local<v8::Value> GetValueJS(v8::Isolate* isolate, sqlite3_stmt* handle, int column, bool safe_ints) {
+		SQLITE_VALUE_TO_JS(column, isolate, safe_ints, handle, column);
+	}
+
+	v8::Local<v8::Value> GetValueJS(v8::Isolate* isolate, sqlite3_value* value, bool safe_ints) {
+		SQLITE_VALUE_TO_JS(value, isolate, safe_ints, value);
+	}
+
+	v8::Local<v8::Value> GetExpandedRowJS(v8::Isolate* isolate, v8::Local<v8::Context> ctx, sqlite3_stmt* handle, bool safe_ints) {
+		v8::Local<v8::Object> row = v8::Object::New(isolate);
+		int column_count = sqlite3_column_count(handle);
+		for (int i = 0; i < column_count; ++i) {
+			const char* table_raw = sqlite3_column_table_name(handle, i);
+			v8::Local<v8::String> table = InternalizedFromUtf8(isolate, table_raw == NULL ? "$" : table_raw, -1);
+			v8::Local<v8::String> column = InternalizedFromUtf8(isolate, sqlite3_column_name(handle, i), -1);
+			v8::Local<v8::Value> value = Data::GetValueJS(isolate, handle, i, safe_ints);
+			if (row->HasOwnProperty(ctx, table).FromJust()) {
+				row->Get(ctx, table).ToLocalChecked().As<v8::Object>()->Set(ctx, column, value).FromJust();
+			} else {
+				v8::Local<v8::Object> nested = v8::Object::New(isolate);
+				row->Set(ctx, table, nested).FromJust();
+				nested->Set(ctx, column, value).FromJust();
+			}
+		}
+		return row;
+	}
+
+#if !defined(NODE_MODULE_VERSION) || NODE_MODULE_VERSION < 127
+
+	v8::Local<v8::Value> GetFlatRowJS(v8::Isolate* isolate, v8::Local<v8::Context> ctx, sqlite3_stmt* handle, bool safe_ints) {
+		v8::Local<v8::Object> row = v8::Object::New(isolate);
+		int column_count = sqlite3_column_count(handle);
+		for (int i = 0; i < column_count; ++i) {
+			row->Set(ctx,
+				InternalizedFromUtf8(isolate, sqlite3_column_name(handle, i), -1),
+				Data::GetValueJS(isolate, handle, i, safe_ints)
+			).FromJust();
+		}
+		return row;
+	}
+
+	v8::Local<v8::Value> GetRawRowJS(v8::Isolate* isolate, v8::Local<v8::Context> ctx, sqlite3_stmt* handle, bool safe_ints) {
+		v8::Local<v8::Array> row = v8::Array::New(isolate);
+		int column_count = sqlite3_column_count(handle);
+		for (int i = 0; i < column_count; ++i) {
+			row->Set(ctx, i, Data::GetValueJS(isolate, handle, i, safe_ints)).FromJust();
+		}
+		return row;
+	}
+
+	v8::Local<v8::Value> GetRowJS(v8::Isolate* isolate, v8::Local<v8::Context> ctx, sqlite3_stmt* handle, bool safe_ints, char mode) {
+		if (mode == FLAT) return GetFlatRowJS(isolate, ctx, handle, safe_ints);
+		if (mode == PLUCK) return GetValueJS(isolate, handle, 0, safe_ints);
+		if (mode == EXPAND) return GetExpandedRowJS(isolate, ctx, handle, safe_ints);
+		if (mode == RAW) return GetRawRowJS(isolate, ctx, handle, safe_ints);
+		assert(false);
+		return v8::Local<v8::Value>();
+	}
+
+#else
+
+	v8::Local<v8::Value> GetFlatRowJS(v8::Isolate* isolate, sqlite3_stmt* handle, bool safe_ints) {
+		int column_count = sqlite3_column_count(handle);
+		v8::LocalVector<v8::Name> keys(isolate);
+		v8::LocalVector<v8::Value> values(isolate);
+		keys.reserve(column_count);
+		values.reserve(column_count);
+		for (int i = 0; i < column_count; ++i) {
+			keys.emplace_back(
+				InternalizedFromUtf8(isolate, sqlite3_column_name(handle, i), -1).As<v8::Name>()
+			);
+			values.emplace_back(
+				Data::GetValueJS(isolate, handle, i, safe_ints)
+			);
+		}
+		return v8::Object::New(
+			isolate,
+			GET_PROTOTYPE(v8::Object::New(isolate)),
+			keys.data(),
+			values.data(),
+			column_count
+		);
+	}
+
+	v8::Local<v8::Value> GetRawRowJS(v8::Isolate* isolate, sqlite3_stmt* handle, bool safe_ints) {
+		int column_count = sqlite3_column_count(handle);
+		v8::LocalVector<v8::Value> row(isolate);
+		row.reserve(column_count);
+		for (int i = 0; i < column_count; ++i) {
+			row.emplace_back(Data::GetValueJS(isolate, handle, i, safe_ints));
+		}
+		return v8::Array::New(isolate, row.data(), row.size());
+	}
+
+	v8::Local<v8::Value> GetRowJS(v8::Isolate* isolate, v8::Local<v8::Context> ctx, sqlite3_stmt* handle, bool safe_ints, char mode) {
+		if (mode == FLAT) return GetFlatRowJS(isolate, handle, safe_ints);
+		if (mode == PLUCK) return GetValueJS(isolate, handle, 0, safe_ints);
+		if (mode == EXPAND) return GetExpandedRowJS(isolate, ctx, handle, safe_ints);
+		if (mode == RAW) return GetRawRowJS(isolate, handle, safe_ints);
+		assert(false);
+		return v8::Local<v8::Value>();
+	}
+
+#endif
+
+	void GetArgumentsJS(v8::Isolate* isolate, v8::Local<v8::Value>* out, sqlite3_value** values, int argument_count, bool safe_ints) {
+		assert(argument_count > 0);
+		for (int i = 0; i < argument_count; ++i) {
+			out[i] = Data::GetValueJS(isolate, values[i], safe_ints);
+		}
+	}
+
+	int BindValueFromJS(v8::Isolate* isolate, sqlite3_stmt* handle, int index, v8::Local<v8::Value> value) {
+		JS_VALUE_TO_SQLITE(bind, value, isolate, handle, index);
+		return value->IsBigInt() ? SQLITE_TOOBIG : -1;
+	}
+
+	void ResultValueFromJS(v8::Isolate* isolate, sqlite3_context* invocation, v8::Local<v8::Value> value, DataConverter* converter) {
+		JS_VALUE_TO_SQLITE(result, value, isolate, invocation);
+		converter->ThrowDataConversionError(invocation, value->IsBigInt());
+	}
+
+}

node_modules/better-sqlite3/src/util/helpers.cpp

@@ -0,0 +1,109 @@
+inline v8::Local<v8::String> StringFromUtf8(v8::Isolate* isolate, const char* data, int length) {
+	return v8::String::NewFromUtf8(isolate, data, v8::NewStringType::kNormal, length).ToLocalChecked();
+}
+
+inline v8::Local<v8::String> InternalizedFromUtf8(v8::Isolate* isolate, const char* data, int length) {
+	return v8::String::NewFromUtf8(isolate, data, v8::NewStringType::kInternalized, length).ToLocalChecked();
+}
+
+inline v8::Local<v8::Value> InternalizedFromUtf8OrNull(v8::Isolate* isolate, const char* data, int length) {
+	if (data == NULL) return v8::Null(isolate);
+	return InternalizedFromUtf8(isolate, data, length);
+}
+
+inline v8::Local<v8::String> InternalizedFromLatin1(v8::Isolate* isolate, const char* str) {
+	return v8::String::NewFromOneByte(isolate, reinterpret_cast<const uint8_t*>(str), v8::NewStringType::kInternalized).ToLocalChecked();
+}
+
+inline void SetFrozen(v8::Isolate* isolate, v8::Local<v8::Context> ctx, v8::Local<v8::Object> obj, v8::Global<v8::String>& key, v8::Local<v8::Value> value) {
+	obj->DefineOwnProperty(ctx, key.Get(isolate), value, static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::ReadOnly)).FromJust();
+}
+
+void ThrowError(const char* message) { EasyIsolate; isolate->ThrowException(v8::Exception::Error(StringFromUtf8(isolate, message, -1))); }
+void ThrowTypeError(const char* message) { EasyIsolate; isolate->ThrowException(v8::Exception::TypeError(StringFromUtf8(isolate, message, -1))); }
+void ThrowRangeError(const char* message) { EasyIsolate; isolate->ThrowException(v8::Exception::RangeError(StringFromUtf8(isolate, message, -1))); }
+
+// Determines whether to skip the given character at the start of an SQL string.
+inline bool IS_SKIPPED(char c) {
+	return c == ' ' || c == ';' || (c >= '\t' && c <= '\r');
+}
+
+// Allocates an empty array, without calling constructors/initializers.
+template<class T> inline T* ALLOC_ARRAY(size_t count) {
+	return static_cast<T*>(::operator new[](count * sizeof(T)));
+}
+
+// Deallocates an array, without calling destructors.
+template<class T> inline void FREE_ARRAY(T* array_pointer) {
+	::operator delete[](array_pointer);
+}
+
+v8::Local<v8::FunctionTemplate> NewConstructorTemplate(
+	v8::Isolate* isolate,
+	v8::Local<v8::External> data,
+	v8::FunctionCallback func,
+	const char* name
+) {
+	v8::Local<v8::FunctionTemplate> t = v8::FunctionTemplate::New(isolate, func, data);
+	t->InstanceTemplate()->SetInternalFieldCount(1);
+	t->SetClassName(InternalizedFromLatin1(isolate, name));
+	return t;
+}
+
+void SetPrototypeMethod(
+	v8::Isolate* isolate,
+	v8::Local<v8::External> data,
+	v8::Local<v8::FunctionTemplate> recv,
+	const char* name,
+	v8::FunctionCallback func
+) {
+	v8::HandleScope scope(isolate);
+	recv->PrototypeTemplate()->Set(
+		InternalizedFromLatin1(isolate, name),
+		v8::FunctionTemplate::New(isolate, func, data, v8::Signature::New(isolate, recv))
+	);
+}
+
+void SetPrototypeSymbolMethod(
+	v8::Isolate* isolate,
+	v8::Local<v8::External> data,
+	v8::Local<v8::FunctionTemplate> recv,
+	v8::Local<v8::Symbol> symbol,
+	v8::FunctionCallback func
+) {
+	v8::HandleScope scope(isolate);
+	recv->PrototypeTemplate()->Set(
+		symbol,
+		v8::FunctionTemplate::New(isolate, func, data, v8::Signature::New(isolate, recv))
+	);
+}
+
+void SetPrototypeGetter(
+	v8::Isolate* isolate,
+	v8::Local<v8::External> data,
+	v8::Local<v8::FunctionTemplate> recv,
+	const char* name,
+	v8::AccessorNameGetterCallback func
+) {
+	v8::HandleScope scope(isolate);
+	recv->InstanceTemplate()->SetNativeDataProperty(
+		InternalizedFromLatin1(isolate, name),
+		func,
+		0,
+		data
+	);
+}
+
+#if defined(V8_ENABLE_SANDBOX)
+// When V8 Sandbox is enabled (in newer Electron versions), we need to use Buffer::Copy
+// instead of Buffer::New to ensure the ArrayBuffer backing store is allocated inside the sandbox
+static inline v8::MaybeLocal<v8::Object> BufferSandboxNew(v8::Isolate* isolate, char* data, size_t length, void (*finalizeCallback)(char*, void*), void* finalizeHint) {
+    v8::MaybeLocal<v8::Object> buffer = node::Buffer::Copy(isolate, data, length);
+    finalizeCallback(data, finalizeHint);
+    return buffer;
+}
+#define SAFE_NEW_BUFFER(env, data, length, finalizeCallback, finalizeHint) BufferSandboxNew(env, data, length, finalizeCallback, finalizeHint)
+#else
+// When V8 Sandbox is not enabled, we can use the more efficient Buffer::New
+#define SAFE_NEW_BUFFER(env, data, length, finalizeCallback, finalizeHint) node::Buffer::New(env, data, length, finalizeCallback, finalizeHint)
+#endif

node_modules/better-sqlite3/src/util/macros.cpp

@@ -0,0 +1,70 @@
+#define NODE_ARGUMENTS const v8::FunctionCallbackInfo<v8::Value>&
+#define NODE_ARGUMENTS_POINTER const v8::FunctionCallbackInfo<v8::Value>*
+#define NODE_METHOD(name) void name(NODE_ARGUMENTS info)
+#define NODE_GETTER(name) void name(v8::Local<v8::Name> _, const v8::PropertyCallbackInfo<v8::Value>& info)
+#define INIT(name) v8::Local<v8::Function> name(v8::Isolate* isolate, v8::Local<v8::External> data)
+
+#if defined(V8_MAJOR_VERSION) && V8_MAJOR_VERSION >= 13
+// v8::Object::GetPrototype has been deprecated. See http://crbug.com/333672197
+#define GET_PROTOTYPE(obj) ((obj)->GetPrototypeV2())
+#else
+#define GET_PROTOTYPE(obj) ((obj)->GetPrototype())
+#endif
+
+#define EasyIsolate v8::Isolate* isolate = v8::Isolate::GetCurrent()
+#define OnlyIsolate info.GetIsolate()
+#define OnlyContext isolate->GetCurrentContext()
+#define OnlyAddon static_cast<Addon*>(info.Data().As<v8::External>()->Value())
+#define UseIsolate v8::Isolate* isolate = OnlyIsolate
+#define UseContext v8::Local<v8::Context> ctx = OnlyContext
+#define UseAddon Addon* addon = OnlyAddon
+#define Unwrap node::ObjectWrap::Unwrap
+
+#define REQUIRE_ARGUMENT_ANY(at, var)                                          \
+	if (info.Length() <= (at()))                                               \
+		return ThrowTypeError("Expected a "#at" argument");                    \
+	var = info[at()]
+
+#define _REQUIRE_ARGUMENT(at, var, Type, message, ...)                         \
+	if (info.Length() <= (at()) || !info[at()]->Is##Type())                    \
+		return ThrowTypeError("Expected "#at" argument to be "#message);       \
+	var = (info[at()].As<v8::Type>())__VA_ARGS__
+
+#define REQUIRE_ARGUMENT_INT32(at, var)                                        \
+	_REQUIRE_ARGUMENT(at, var, Int32, a 32-bit signed integer, ->Value())
+#define REQUIRE_ARGUMENT_BOOLEAN(at, var)                                      \
+	_REQUIRE_ARGUMENT(at, var, Boolean, a boolean, ->Value())
+#define REQUIRE_ARGUMENT_STRING(at, var)                                       \
+	_REQUIRE_ARGUMENT(at, var, String, a string)
+#define REQUIRE_ARGUMENT_OBJECT(at, var)                                       \
+	_REQUIRE_ARGUMENT(at, var, Object, an object)
+#define REQUIRE_ARGUMENT_FUNCTION(at, var)                                     \
+	_REQUIRE_ARGUMENT(at, var, Function, a function)
+
+#define REQUIRE_DATABASE_OPEN(db)                                              \
+	if (!db->open)                                                             \
+		return ThrowTypeError("The database connection is not open")
+#define REQUIRE_DATABASE_NOT_BUSY(db)                                          \
+	if (db->busy)                                                              \
+		return ThrowTypeError("This database connection is busy executing a query")
+#define REQUIRE_DATABASE_NO_ITERATORS(db)                                      \
+	if (db->iterators)                                                         \
+		return ThrowTypeError("This database connection is busy executing a query")
+#define REQUIRE_DATABASE_NO_ITERATORS_UNLESS_UNSAFE(db)                        \
+	if (!db->unsafe_mode) {                                                    \
+		REQUIRE_DATABASE_NO_ITERATORS(db);                                     \
+	} ((void)0)
+#define REQUIRE_STATEMENT_NOT_LOCKED(stmt)                                     \
+	if (stmt->locked)                                                          \
+		return ThrowTypeError("This statement is busy executing a query")
+
+#define first() 0
+#define second() 1
+#define third() 2
+#define fourth() 3
+#define fifth() 4
+#define sixth() 5
+#define seventh() 6
+#define eighth() 7
+#define ninth() 8
+#define tenth() 9

node_modules/better-sqlite3/src/util/query-macros.cpp

@@ -0,0 +1,71 @@
+#define STATEMENT_BIND(handle)                                                 \
+	Binder binder(handle);                                                     \
+	if (!binder.Bind(info, info.Length(), stmt)) {                             \
+		sqlite3_clear_bindings(handle);                                        \
+		return;                                                                \
+	} ((void)0)
+
+#define STATEMENT_THROW_LOGIC()                                                \
+	db->ThrowDatabaseError();                                                  \
+	if (!bound) { sqlite3_clear_bindings(handle); }                            \
+	return
+
+#define STATEMENT_RETURN_LOGIC(return_value)                                   \
+	info.GetReturnValue().Set(return_value);                                   \
+	if (!bound) { sqlite3_clear_bindings(handle); }                            \
+	return
+
+#define STATEMENT_START_LOGIC(RETURNS_DATA_CHECK, MUTATE_CHECK)                \
+	Statement* stmt = Unwrap<Statement>(info.This());                          \
+	RETURNS_DATA_CHECK();                                                      \
+	sqlite3_stmt* handle = stmt->handle;                                       \
+	Database* db = stmt->db;                                                   \
+	REQUIRE_DATABASE_OPEN(db->GetState());                                     \
+	REQUIRE_DATABASE_NOT_BUSY(db->GetState());                                 \
+	MUTATE_CHECK();                                                            \
+	const bool bound = stmt->bound;                                            \
+	if (!bound) {                                                              \
+		STATEMENT_BIND(handle);                                                \
+	} else if (info.Length() > 0) {                                            \
+		return ThrowTypeError("This statement already has bound parameters");  \
+	} ((void)0)
+
+
+#define STATEMENT_THROW() db->GetState()->busy = false; STATEMENT_THROW_LOGIC()
+#define STATEMENT_RETURN(x) db->GetState()->busy = false; STATEMENT_RETURN_LOGIC(x)
+#define STATEMENT_START(x, y)                                                  \
+	STATEMENT_START_LOGIC(x, y);                                               \
+	db->GetState()->busy = true;                                               \
+	UseIsolate;                                                                \
+	if (db->Log(isolate, handle)) {                                            \
+		STATEMENT_THROW();                                                     \
+	} ((void)0)
+
+
+#define DOES_NOT_MUTATE() REQUIRE_STATEMENT_NOT_LOCKED(stmt)
+#define DOES_MUTATE()                                                          \
+	REQUIRE_STATEMENT_NOT_LOCKED(stmt);                                        \
+	REQUIRE_DATABASE_NO_ITERATORS_UNLESS_UNSAFE(db->GetState())
+#define DOES_ADD_ITERATOR()                                                    \
+	DOES_NOT_MUTATE();                                                         \
+	if (db->GetState()->iterators == USHRT_MAX)                                \
+		return ThrowRangeError("Too many active database iterators")
+#define REQUIRE_STATEMENT_RETURNS_DATA()                                       \
+	if (!stmt->returns_data)                                                   \
+		return ThrowTypeError("This statement does not return data. Use run() instead")
+#define ALLOW_ANY_STATEMENT()                                                  \
+	((void)0)
+
+
+#define _FUNCTION_START(type)                                                  \
+	type* self = static_cast<type*>(sqlite3_user_data(invocation));            \
+	v8::Isolate* isolate = self->isolate;                                      \
+	v8::HandleScope scope(isolate)
+
+#define FUNCTION_START()                                                       \
+	_FUNCTION_START(CustomFunction)
+
+#define AGGREGATE_START()                                                      \
+	_FUNCTION_START(CustomAggregate);                                          \
+	Accumulator* acc = self->GetAccumulator(invocation);                       \
+	if (acc->value.IsEmpty()) return

node_modules/better-sqlite3/src/util/row-builder.cpp

@@ -0,0 +1,49 @@
+class RowBuilder {
+public:
+
+	explicit RowBuilder(
+		v8::Isolate* isolate,
+		sqlite3_stmt* handle,
+		bool safe_ints
+	) :
+		isolate(isolate),
+		handle(handle),
+		column_count(-1),
+		safe_ints(safe_ints),
+		keys(isolate) {}
+
+	v8::Local<v8::Value> GetRowJS() {
+		if (column_count < 0) {
+			column_count = sqlite3_column_count(handle);
+			keys.reserve(column_count);
+			for (int i = 0; i < column_count; ++i) {
+				keys.emplace_back(
+					InternalizedFromUtf8(isolate, sqlite3_column_name(handle, i), -1)
+						.As<v8::Name>()
+				);
+			}
+		}
+
+		v8::LocalVector<v8::Value> values(isolate);
+		values.reserve(column_count);
+		for (int i = 0; i < column_count; ++i) {
+			values.emplace_back(
+				Data::GetValueJS(isolate, handle, i, safe_ints)
+			);
+		}
+
+		return v8::Object::New(isolate,
+			GET_PROTOTYPE(v8::Object::New(isolate)),
+			keys.data(),
+			values.data(),
+			column_count
+		);
+	}
+
+private:
+	v8::Isolate* isolate;
+	sqlite3_stmt* handle;
+	int column_count;
+	const bool safe_ints;
+	v8::LocalVector<v8::Name> keys;
+};