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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#ifndef _MORKTABLE_
#define _MORKTABLE_ 1
#ifndef _MORK_
# include "mork.h"
#endif
#ifndef _MORKNODE_
# include "morkNode.h"
#endif
#ifndef _MORKDEQUE_
# include "morkDeque.h"
#endif
#ifndef _MORKOBJECT_
# include "morkObject.h"
#endif
#ifndef _MORKARRAY_
# include "morkArray.h"
#endif
#ifndef _MORKROWMAP_
# include "morkRowMap.h"
#endif
#ifndef _MORKNODEMAP_
# include "morkNodeMap.h"
#endif
#ifndef _MORKPROBEMAP_
# include "morkProbeMap.h"
#endif
#ifndef _MORKBEAD_
# include "morkBead.h"
#endif
// 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
class nsIMdbTable;
#define morkDerived_kTable /*i*/ 0x5462 /* ascii 'Tb' */
/*| kStartRowArraySize: starting physical size of array for mTable_RowArray.
**| We want this number very small, so that a table containing exactly one
**| row member will not pay too significantly in space overhead. But we want
**| a number bigger than one, so there is some space for growth.
|*/
#define morkTable_kStartRowArraySize 3 /* modest starting size for array */
/*| kMakeRowMapThreshold: this is the number of rows in a table which causes
**| a hash table (mTable_RowMap) to be lazily created for faster member row
**| identification, during such operations as cuts and adds. This number must
**| be small enough that linear searches are not bad for member counts less
**| than this; but this number must also be large enough that creating a hash
**| table does not increase the per-row space overhead by a big percentage.
**| For speed, numbers on the order of ten to twenty are all fine; for space,
**| I believe a number as small as ten will have too much space overhead.
|*/
#define morkTable_kMakeRowMapThreshold 17 /* when to build mTable_RowMap */
#define morkTable_kStartRowMapSlotCount 13
#define morkTable_kMaxTableGcUses 0x0FF /* max for 8-bit unsigned int */
#define morkTable_kUniqueBit ((mork_u1)(1 << 0))
#define morkTable_kVerboseBit ((mork_u1)(1 << 1))
#define morkTable_kNotedBit ((mork_u1)(1 << 2)) /* space has change notes */
#define morkTable_kRewriteBit ((mork_u1)(1 << 3)) /* must rewrite all rows */
#define morkTable_kNewMetaBit ((mork_u1)(1 << 4)) /* new table meta row */
class morkTable : public morkObject, public morkLink, public nsIMdbTable {
// NOTE the morkLink base is for morkRowSpace::mRowSpace_TablesByPriority
// public: // slots inherited from morkObject (meant to inform only)
// nsIMdbHeap* mNode_Heap;
// mork_base mNode_Base; // must equal morkBase_kNode
// mork_derived mNode_Derived; // depends on specific node subclass
// mork_access mNode_Access; // kOpen, kClosing, kShut, or kDead
// mork_usage mNode_Usage; // kHeap, kStack, kMember, kGlobal, kNone
// mork_able mNode_Mutable; // can this node be modified?
// mork_load mNode_Load; // is this node clean or dirty?
// mork_uses mNode_Uses; // refcount for strong refs
// mork_refs mNode_Refs; // refcount for strong refs + weak refs
// mork_color mBead_Color; // ID for this bead
// morkHandle* mObject_Handle; // weak ref to handle for this object
public: // bead color setter & getter replace obsolete member mTable_Id:
NS_DECL_ISUPPORTS_INHERITED
mork_tid TableId() const { return mBead_Color; }
void SetTableId(mork_tid inTid) { mBead_Color = inTid; }
// we override these so we use xpcom ref-counting semantics.
#ifndef _MSC_VER
// The first declaration of AddStrongRef is to suppress
// -Werror,-Woverloaded-virtual.
virtual mork_refs AddStrongRef(nsIMdbEnv* ev) override;
#endif
virtual mork_refs AddStrongRef(morkEnv* ev) override;
#ifndef _MSC_VER
// The first declaration of CutStrongRef is to suppress
// -Werror,-Woverloaded-virtual.
virtual nsresult CutStrongRef(nsIMdbEnv* ev) override;
#endif
virtual mork_refs CutStrongRef(morkEnv* ev) override;
public:
// { ===== begin nsIMdbCollection methods =====
// { ----- begin attribute methods -----
NS_IMETHOD GetSeed(nsIMdbEnv* ev,
mdb_seed* outSeed) override; // member change count
NS_IMETHOD GetCount(nsIMdbEnv* ev,
mdb_count* outCount) override; // member count
NS_IMETHOD GetPort(nsIMdbEnv* ev,
nsIMdbPort** acqPort) override; // collection container
// } ----- end attribute methods -----
// { ----- begin cursor methods -----
NS_IMETHOD GetCursor( // make a cursor starting iter at inMemberPos
nsIMdbEnv* ev, // context
mdb_pos inMemberPos, // zero-based ordinal pos of member in collection
nsIMdbCursor** acqCursor) override; // acquire new cursor instance
// } ----- end cursor methods -----
// { ----- begin ID methods -----
NS_IMETHOD GetOid(nsIMdbEnv* ev,
mdbOid* outOid) override; // read object identity
NS_IMETHOD BecomeContent(nsIMdbEnv* ev,
const mdbOid* inOid) override; // exchange content
// } ----- end ID methods -----
// { ----- begin activity dropping methods -----
NS_IMETHOD DropActivity( // tell collection usage no longer expected
nsIMdbEnv* ev) override;
// } ----- end activity dropping methods -----
// } ===== end nsIMdbCollection methods =====
NS_IMETHOD SetTablePriority(nsIMdbEnv* ev, mdb_priority inPrio) override;
NS_IMETHOD GetTablePriority(nsIMdbEnv* ev, mdb_priority* outPrio) override;
NS_IMETHOD GetTableBeVerbose(nsIMdbEnv* ev, mdb_bool* outBeVerbose) override;
NS_IMETHOD SetTableBeVerbose(nsIMdbEnv* ev, mdb_bool inBeVerbose) override;
NS_IMETHOD GetTableIsUnique(nsIMdbEnv* ev, mdb_bool* outIsUnique) override;
NS_IMETHOD GetTableKind(nsIMdbEnv* ev, mdb_kind* outTableKind) override;
NS_IMETHOD GetRowScope(nsIMdbEnv* ev, mdb_scope* outRowScope) override;
NS_IMETHOD GetMetaRow(
nsIMdbEnv* ev, // context
const mdbOid* inOptionalMetaRowOid, // can be nil to avoid specifying
mdbOid* outOid, // output meta row oid, can be nil to suppress output
nsIMdbRow** acqRow)
override; // acquire table's unique singleton meta row
// The purpose of a meta row is to support the persistent recording of
// meta info about a table as cells put into the distinguished meta row.
// Each table has exactly one meta row, which is not considered a member
// of the collection of rows inside the table. The only way to tell
// whether a row is a meta row is by the fact that it is returned by this
// GetMetaRow() method from some table. Otherwise nothing distinguishes
// a meta row from any other row. A meta row can be used anyplace that
// any other row can be used, and can even be put into other tables (or
// the same table) as a table member, if this is useful for some reason.
// The first attempt to access a table's meta row using GetMetaRow() will
// cause the meta row to be created if it did not already exist. When the
// meta row is created, it will have the row oid that was previously
// requested for this table's meta row; or if no oid was ever explicitly
// specified for this meta row, then a unique oid will be generated in
// the row scope named "m" (so obviously MDB clients should not
// manually allocate any row IDs from that special meta scope namespace).
// The meta row oid can be specified either when the table is created, or
// else the first time that GetMetaRow() is called, by passing a non-nil
// pointer to an oid for parameter inOptionalMetaRowOid. The meta row's
// actual oid is returned in outOid (if this is a non-nil pointer), and
// it will be different from inOptionalMetaRowOid when the meta row was
// already given a different oid earlier.
// } ----- end meta attribute methods -----
// { ----- begin cursor methods -----
NS_IMETHOD
GetTableRowCursor( // make a cursor, starting iteration at inRowPos
nsIMdbEnv* ev, // context
mdb_pos inRowPos, // zero-based ordinal position of row in table
nsIMdbTableRowCursor** acqCursor)
override; // acquire new cursor instance
// } ----- end row position methods -----
// { ----- begin row position methods -----
NS_IMETHOD PosToOid( // get row member for a table position
nsIMdbEnv* ev, // context
mdb_pos inRowPos, // zero-based ordinal position of row in table
mdbOid* outOid) override; // row oid at the specified position
NS_IMETHOD OidToPos( // test for the table position of a row member
nsIMdbEnv* ev, // context
const mdbOid* inOid, // row to find in table
mdb_pos* outPos) override; // zero-based ordinal position of row in table
NS_IMETHOD PosToRow( // test for the table position of a row member
nsIMdbEnv* ev, // context
mdb_pos inRowPos, // zero-based ordinal position of row in table
nsIMdbRow** acqRow) override; // acquire row at table position inRowPos
NS_IMETHOD RowToPos( // test for the table position of a row member
nsIMdbEnv* ev, // context
nsIMdbRow* ioRow, // row to find in table
mdb_pos* outPos) override; // zero-based ordinal position of row in table
// } ----- end row position methods -----
// { ----- begin oid set methods -----
NS_IMETHOD AddOid( // make sure the row with inOid is a table member
nsIMdbEnv* ev, // context
const mdbOid* inOid) override; // row to ensure membership in table
NS_IMETHOD HasOid( // test for the table position of a row member
nsIMdbEnv* ev, // context
const mdbOid* inOid, // row to find in table
mdb_bool* outHasOid) override; // whether inOid is a member row
NS_IMETHOD CutOid( // make sure the row with inOid is not a member
nsIMdbEnv* ev, // context
const mdbOid* inOid) override; // row to remove from table
// } ----- end oid set methods -----
// { ----- begin row set methods -----
NS_IMETHOD NewRow( // create a new row instance in table
nsIMdbEnv* ev, // context
mdbOid*
ioOid, // please use minus one (unbound) rowId for db-assigned IDs
nsIMdbRow** acqRow) override; // create new row
NS_IMETHOD AddRow( // make sure the row with inOid is a table member
nsIMdbEnv* ev, // context
nsIMdbRow* ioRow) override; // row to ensure membership in table
NS_IMETHOD HasRow( // test for the table position of a row member
nsIMdbEnv* ev, // context
nsIMdbRow* ioRow, // row to find in table
mdb_bool* outHasRow) override; // whether row is a table member
NS_IMETHOD CutRow( // make sure the row with inOid is not a member
nsIMdbEnv* ev, // context
nsIMdbRow* ioRow) override; // row to remove from table
NS_IMETHOD CutAllRows( // remove all rows from the table
nsIMdbEnv* ev) override; // context
// } ----- end row set methods -----
// { ----- begin hinting methods -----
NS_IMETHOD SearchColumnsHint( // advise re future expected search cols
nsIMdbEnv* ev, // context
const mdbColumnSet* inColumnSet)
override; // columns likely to be searched
NS_IMETHOD SortColumnsHint( // advise re future expected sort columns
nsIMdbEnv* ev, // context
const mdbColumnSet* inColumnSet)
override; // columns for likely sort requests
NS_IMETHOD StartBatchChangeHint( // advise before many adds and cuts
nsIMdbEnv* ev, // context
const void* inLabel) override; // intend unique address to match end call
// If batch starts nest by virtue of nesting calls in the stack, then
// the address of a local variable makes a good batch start label that
// can be used at batch end time, and such addresses remain unique.
NS_IMETHOD EndBatchChangeHint( // advise before many adds and cuts
nsIMdbEnv* ev, // context
const void* inLabel) override; // label matching start label
// Suppose a table is maintaining one or many sort orders for a table,
// so that every row added to the table must be inserted in each sort,
// and every row cut must be removed from each sort. If a db client
// intends to make many such changes before needing any information
// about the order or positions of rows inside a table, then a client
// might tell the table to start batch changes in order to disable
// sorting of rows for the interim. Presumably a table will then do
// a full sort of all rows at need when the batch changes end, or when
// a surprise request occurs for row position during batch changes.
// } ----- end hinting methods -----
// { ----- begin searching methods -----
NS_IMETHOD FindRowMatches( // search variable number of sorted cols
nsIMdbEnv* ev, // context
const mdbYarn*
inPrefix, // content to find as prefix in row's column cell
nsIMdbTableRowCursor** acqCursor) override; // set of matching rows
NS_IMETHOD GetSearchColumns( // query columns used by FindRowMatches()
nsIMdbEnv* ev, // context
mdb_count* outCount, // context
mdbColumnSet* outColSet)
override; // caller supplied space to put columns
// GetSearchColumns() returns the columns actually searched when the
// FindRowMatches() method is called. No more than mColumnSet_Count
// slots of mColumnSet_Columns will be written, since mColumnSet_Count
// indicates how many slots are present in the column array. The
// actual number of search column used by the table is returned in
// the outCount parameter; if this number exceeds mColumnSet_Count,
// then a caller needs a bigger array to read the entire column set.
// The minimum of mColumnSet_Count and outCount is the number slots
// in mColumnSet_Columns that were actually written by this method.
//
// Callers are expected to change this set of columns by calls to
// nsIMdbTable::SearchColumnsHint() or SetSearchSorting(), or both.
// } ----- end searching methods -----
// { ----- begin sorting methods -----
// sorting: note all rows are assumed sorted by row ID as a secondary
// sort following the primary column sort, when table rows are sorted.
NS_IMETHOD
CanSortColumn( // query which column is currently used for sorting
nsIMdbEnv* ev, // context
mdb_column inColumn, // column to query sorting potential
mdb_bool* outCanSort) override; // whether the column can be sorted
NS_IMETHOD GetSorting( // view same table in particular sorting
nsIMdbEnv* ev, // context
mdb_column inColumn, // requested new column for sorting table
nsIMdbSorting** acqSorting) override; // acquire sorting for column
NS_IMETHOD SetSearchSorting( // use this sorting in FindRowMatches()
nsIMdbEnv* ev, // context
mdb_column inColumn, // often same as nsIMdbSorting::GetSortColumn()
nsIMdbSorting* ioSorting) override; // requested sorting for some column
// SetSearchSorting() attempts to inform the table that ioSorting
// should be used during calls to FindRowMatches() for searching
// the column which is actually sorted by ioSorting. This method
// is most useful in conjunction with nsIMdbSorting::SetCompare(),
// because otherwise a caller would not be able to override the
// comparison ordering method used during searches. Note that some
// database implementations might be unable to use an arbitrarily
// specified sort order, either due to schema or runtime interface
// constraints, in which case ioSorting might not actually be used.
// Presumably ioSorting is an instance that was returned from some
// earlier call to nsIMdbTable::GetSorting(). A caller can also
// use nsIMdbTable::SearchColumnsHint() to specify desired change
// in which columns are sorted and searched by FindRowMatches().
//
// A caller can pass a nil pointer for ioSorting to request that
// column inColumn no longer be used at all by FindRowMatches().
// But when ioSorting is non-nil, then inColumn should match the
// column actually sorted by ioSorting; when these do not agree,
// implementations are instructed to give precedence to the column
// specified by ioSorting (so this means callers might just pass
// zero for inColumn when ioSorting is also provided, since then
// inColumn is both redundant and ignored).
// } ----- end sorting methods -----
// { ----- begin moving methods -----
// moving a row does nothing unless a table is currently unsorted
NS_IMETHOD MoveOid( // change position of row in unsorted table
nsIMdbEnv* ev, // context
const mdbOid* inOid, // row oid to find in table
mdb_pos inHintFromPos, // suggested hint regarding start position
mdb_pos inToPos, // desired new position for row inRowId
mdb_pos* outActualPos) override; // actual new position of row in table
NS_IMETHOD MoveRow( // change position of row in unsorted table
nsIMdbEnv* ev, // context
nsIMdbRow* ioRow, // row oid to find in table
mdb_pos inHintFromPos, // suggested hint regarding start position
mdb_pos inToPos, // desired new position for row inRowId
mdb_pos* outActualPos) override; // actual new position of row in table
// } ----- end moving methods -----
// { ----- begin index methods -----
NS_IMETHOD AddIndex( // create a sorting index for column if possible
nsIMdbEnv* ev, // context
mdb_column inColumn, // the column to sort by index
nsIMdbThumb** acqThumb)
override; // acquire thumb for incremental index building
// Call nsIMdbThumb::DoMore() until done, or until the thumb is broken, and
// then the index addition will be finished.
NS_IMETHOD CutIndex( // stop supporting a specific column index
nsIMdbEnv* ev, // context
mdb_column inColumn, // the column with index to be removed
nsIMdbThumb** acqThumb)
override; // acquire thumb for incremental index destroy
// Call nsIMdbThumb::DoMore() until done, or until the thumb is broken, and
// then the index removal will be finished.
NS_IMETHOD HasIndex( // query for current presence of a column index
nsIMdbEnv* ev, // context
mdb_column inColumn, // the column to investigate
mdb_bool* outHasIndex)
override; // whether column has index for this column
NS_IMETHOD EnableIndexOnSort( // create an index for col on first sort
nsIMdbEnv* ev, // context
mdb_column inColumn) override; // the column to index if ever sorted
NS_IMETHOD QueryIndexOnSort( // check whether index on sort is enabled
nsIMdbEnv* ev, // context
mdb_column inColumn, // the column to investigate
mdb_bool* outIndexOnSort)
override; // whether column has index-on-sort enabled
NS_IMETHOD DisableIndexOnSort( // prevent future index creation on sort
nsIMdbEnv* ev, // context
mdb_column inColumn) override; // the column to index if ever sorted
// } ----- end index methods -----
morkStore* mTable_Store; // non-refcnted ptr to port
// mTable_RowSpace->SpaceScope() is row scope
morkRowSpace* mTable_RowSpace; // non-refcnted ptr to containing space
morkRow* mTable_MetaRow; // table's actual meta row
mdbOid mTable_MetaRowOid; // oid for meta row
morkRowMap* mTable_RowMap; // (strong ref) hash table of all members
morkArray mTable_RowArray; // array of morkRow pointers
morkList mTable_ChangeList; // list of table changes
mork_u2 mTable_ChangesCount; // length of changes list
mork_u2 mTable_ChangesMax; // max list length before rewrite
// mork_tid mTable_Id;
mork_kind mTable_Kind;
mork_u1 mTable_Flags; // bit flags
mork_priority mTable_Priority; // 0..9, any other value equals 9
mork_u1 mTable_GcUses; // persistent references from cells
mork_u1 mTable_Pad; // for u4 alignment
public: // flags bit twiddling
void SetTableUnique() { mTable_Flags |= morkTable_kUniqueBit; }
void SetTableVerbose() { mTable_Flags |= morkTable_kVerboseBit; }
void SetTableNoted() { mTable_Flags |= morkTable_kNotedBit; }
void SetTableRewrite() { mTable_Flags |= morkTable_kRewriteBit; }
void SetTableNewMeta() { mTable_Flags |= morkTable_kNewMetaBit; }
void ClearTableUnique() { mTable_Flags &= (mork_u1)~morkTable_kUniqueBit; }
void ClearTableVerbose() { mTable_Flags &= (mork_u1)~morkTable_kVerboseBit; }
void ClearTableNoted() { mTable_Flags &= (mork_u1)~morkTable_kNotedBit; }
void ClearTableRewrite() { mTable_Flags &= (mork_u1)~morkTable_kRewriteBit; }
void ClearTableNewMeta() { mTable_Flags &= (mork_u1)~morkTable_kNewMetaBit; }
mork_bool IsTableUnique() const {
return (mTable_Flags & morkTable_kUniqueBit) != 0;
}
mork_bool IsTableVerbose() const {
return (mTable_Flags & morkTable_kVerboseBit) != 0;
}
mork_bool IsTableNoted() const {
return (mTable_Flags & morkTable_kNotedBit) != 0;
}
mork_bool IsTableRewrite() const {
return (mTable_Flags & morkTable_kRewriteBit) != 0;
}
mork_bool IsTableNewMeta() const {
return (mTable_Flags & morkTable_kNewMetaBit) != 0;
}
public
: // table dirty handling more complex than morkNode::SetNodeDirty() etc.
void SetTableDirty() { this->SetNodeDirty(); }
void SetTableClean(morkEnv* ev);
mork_bool IsTableClean() const { return this->IsNodeClean(); }
mork_bool IsTableDirty() const { return this->IsNodeDirty(); }
public: // morkNode memory management operators
void* operator new(size_t inSize, nsIMdbHeap& ioHeap,
morkEnv* ev) noexcept(true) {
return morkNode::MakeNew(inSize, ioHeap, ev);
}
// { ===== begin morkNode interface =====
public: // morkNode virtual methods
virtual void CloseMorkNode(morkEnv* ev) override; // CloseTable() if open
public: // morkTable construction & destruction
morkTable(
morkEnv* ev, const morkUsage& inUsage, nsIMdbHeap* ioNodeHeap,
morkStore* ioStore, nsIMdbHeap* ioSlotHeap, morkRowSpace* ioRowSpace,
const mdbOid* inOptionalMetaRowOid, // can be nil to avoid specifying
mork_tid inTableId, mork_kind inKind, mork_bool inMustBeUnique);
void CloseTable(morkEnv* ev); // called by CloseMorkNode();
private: // copying is not allowed
morkTable(const morkTable& other);
morkTable& operator=(const morkTable& other);
virtual ~morkTable(); // assert that close executed earlier
public: // dynamic type identification
mork_bool IsTable() const {
return IsNode() && mNode_Derived == morkDerived_kTable;
}
// } ===== end morkNode methods =====
public: // errors
static void NonTableTypeError(morkEnv* ev);
static void NonTableTypeWarning(morkEnv* ev);
static void NilRowSpaceError(morkEnv* ev);
public: // warnings
static void TableGcUsesUnderflowWarning(morkEnv* ev);
public: // noting table changes
mork_bool HasChangeOverflow() const {
return mTable_ChangesCount >= mTable_ChangesMax;
}
void NoteTableSetAll(morkEnv* ev);
void NoteTableMoveRow(morkEnv* ev, morkRow* ioRow, mork_pos inPos);
void note_row_change(morkEnv* ev, mork_change inChange, morkRow* ioRow);
void note_row_move(morkEnv* ev, morkRow* ioRow, mork_pos inNewPos);
void NoteTableAddRow(morkEnv* ev, morkRow* ioRow) {
this->note_row_change(ev, morkChange_kAdd, ioRow);
}
void NoteTableCutRow(morkEnv* ev, morkRow* ioRow) {
this->note_row_change(ev, morkChange_kCut, ioRow);
}
protected: // internal row map methods
morkRow* find_member_row(morkEnv* ev, morkRow* ioRow);
void build_row_map(morkEnv* ev);
public: // other table methods
mork_bool MaybeDirtySpaceStoreAndTable();
morkRow* GetMetaRow(morkEnv* ev, const mdbOid* inOptionalMetaRowOid);
mork_u2 AddTableGcUse(morkEnv* ev);
mork_u2 CutTableGcUse(morkEnv* ev);
// void DirtyAllTableContent(morkEnv* ev);
mork_seed TableSeed() const { return mTable_RowArray.mArray_Seed; }
morkRow* SafeRowAt(morkEnv* ev, mork_pos inPos) {
return (morkRow*)mTable_RowArray.SafeAt(ev, inPos);
}
nsIMdbTable* AcquireTableHandle(morkEnv* ev); // mObject_Handle
mork_count GetRowCount() const { return mTable_RowArray.mArray_Fill; }
mork_bool IsTableUsed() const {
return (mTable_GcUses != 0 || this->GetRowCount() != 0);
}
void GetTableOid(morkEnv* ev, mdbOid* outOid);
mork_pos ArrayHasOid(morkEnv* ev, const mdbOid* inOid);
mork_bool MapHasOid(morkEnv* ev, const mdbOid* inOid);
mork_bool AddRow(morkEnv* ev, morkRow* ioRow); // returns ev->Good()
mork_bool CutRow(morkEnv* ev, morkRow* ioRow); // returns ev->Good()
mork_bool CutAllRows(morkEnv* ev); // returns ev->Good()
mork_pos MoveRow(
morkEnv* ev, morkRow* ioRow, // change row position
mork_pos inHintFromPos, // suggested hint regarding start position
mork_pos inToPos); // desired new position for row ioRow
// MoveRow() returns the actual position of ioRow afterwards; this
// position is -1 if and only if ioRow was not found as a member.
morkTableRowCursor* NewTableRowCursor(morkEnv* ev, mork_pos inRowPos);
public: // typesafe refcounting inlines calling inherited morkNode methods
static void SlotWeakTable(morkTable* me, morkEnv* ev, morkTable** ioSlot) {
morkNode::SlotWeakNode((morkNode*)me, ev, (morkNode**)ioSlot);
}
static void SlotStrongTable(morkTable* me, morkEnv* ev, morkTable** ioSlot) {
morkNode::SlotStrongNode((morkNode*)me, ev, (morkNode**)ioSlot);
}
};
// 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
// use negative values for kCut and kAdd, to keep non-neg move pos distinct:
#define morkTableChange_kCut ((mork_pos)-1) /* shows row was cut */
#define morkTableChange_kAdd ((mork_pos)-2) /* shows row was added */
#define morkTableChange_kNone ((mork_pos)-3) /* unknown change */
class morkTableChange : public morkNext {
public: // state is public because the entire Mork system is private
morkRow* mTableChange_Row; // the row in the change
mork_pos mTableChange_Pos; // kAdd, kCut, or non-neg for row move
public:
morkTableChange(morkEnv* ev, mork_change inChange, morkRow* ioRow);
// use this constructor for inChange == morkChange_kAdd or morkChange_kCut
morkTableChange(morkEnv* ev, morkRow* ioRow, mork_pos inPos);
// use this constructor when the row is moved
public:
void UnknownChangeError(
morkEnv* ev) const; // morkChange_kAdd or morkChange_kCut
void NegativeMovePosError(
morkEnv* ev) const; // move must be non-neg position
public:
mork_bool IsAddRowTableChange() const {
return (mTableChange_Pos == morkTableChange_kAdd);
}
mork_bool IsCutRowTableChange() const {
return (mTableChange_Pos == morkTableChange_kCut);
}
mork_bool IsMoveRowTableChange() const { return (mTableChange_Pos >= 0); }
public:
mork_pos GetMovePos() const { return mTableChange_Pos; }
// GetMovePos() assumes that IsMoveRowTableChange() is true.
};
// 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
#define morkDerived_kTableMap /*i*/ 0x744D /* ascii 'tM' */
/*| morkTableMap: maps mork_token -> morkTable
|*/
#ifdef MORK_BEAD_OVER_NODE_MAPS
class morkTableMap : public morkBeadMap {
#else /*MORK_BEAD_OVER_NODE_MAPS*/
class morkTableMap : public morkNodeMap { // for mapping tokens to tables
#endif /*MORK_BEAD_OVER_NODE_MAPS*/
public:
virtual ~morkTableMap();
morkTableMap(morkEnv* ev, const morkUsage& inUsage, nsIMdbHeap* ioHeap,
nsIMdbHeap* ioSlotHeap);
public: // other map methods
#ifdef MORK_BEAD_OVER_NODE_MAPS
mork_bool AddTable(morkEnv* ev, morkTable* ioTable) {
return this->AddBead(ev, ioTable);
}
// the AddTable() boolean return equals ev->Good().
mork_bool CutTable(morkEnv* ev, mork_tid inTid) {
return this->CutBead(ev, inTid);
}
// The CutTable() boolean return indicates whether removal happened.
morkTable* GetTable(morkEnv* ev, mork_tid inTid) {
return (morkTable*)this->GetBead(ev, inTid);
}
// Note the returned table does NOT have an increase in refcount for this.
mork_num CutAllTables(morkEnv* ev) { return this->CutAllBeads(ev); }
// CutAllTables() releases all the referenced table values.
#else /*MORK_BEAD_OVER_NODE_MAPS*/
mork_bool AddTable(morkEnv* ev, morkTable* ioTable) {
return this->AddNode(ev, ioTable->TableId(), ioTable);
}
// the AddTable() boolean return equals ev->Good().
mork_bool CutTable(morkEnv* ev, mork_tid inTid) {
return this->CutNode(ev, inTid);
}
// The CutTable() boolean return indicates whether removal happened.
morkTable* GetTable(morkEnv* ev, mork_tid inTid) {
return (morkTable*)this->GetNode(ev, inTid);
}
// Note the returned table does NOT have an increase in refcount for this.
mork_num CutAllTables(morkEnv* ev) { return this->CutAllNodes(ev); }
// CutAllTables() releases all the referenced table values.
#endif /*MORK_BEAD_OVER_NODE_MAPS*/
};
#ifdef MORK_BEAD_OVER_NODE_MAPS
class morkTableMapIter : public morkBeadMapIter {
#else /*MORK_BEAD_OVER_NODE_MAPS*/
class morkTableMapIter : public morkMapIter { // typesafe wrapper class
#endif /*MORK_BEAD_OVER_NODE_MAPS*/
public:
#ifdef MORK_BEAD_OVER_NODE_MAPS
morkTableMapIter(morkEnv* ev, morkTableMap* ioMap)
: morkBeadMapIter(ev, ioMap) {}
morkTableMapIter() : morkBeadMapIter() {}
void InitTableMapIter(morkEnv* ev, morkTableMap* ioMap) {
this->InitBeadMapIter(ev, ioMap);
}
morkTable* FirstTable(morkEnv* ev) { return (morkTable*)this->FirstBead(ev); }
morkTable* NextTable(morkEnv* ev) { return (morkTable*)this->NextBead(ev); }
morkTable* HereTable(morkEnv* ev) { return (morkTable*)this->HereBead(ev); }
#else /*MORK_BEAD_OVER_NODE_MAPS*/
morkTableMapIter(morkEnv* ev, morkTableMap* ioMap) : morkMapIter(ev, ioMap) {}
morkTableMapIter() : morkMapIter() {}
void InitTableMapIter(morkEnv* ev, morkTableMap* ioMap) {
this->InitMapIter(ev, ioMap);
}
mork_change* FirstTable(morkEnv* ev, mork_tid* outTid, morkTable** outTable) {
return this->First(ev, outTid, outTable);
}
mork_change* NextTable(morkEnv* ev, mork_tid* outTid, morkTable** outTable) {
return this->Next(ev, outTid, outTable);
}
mork_change* HereTable(morkEnv* ev, mork_tid* outTid, morkTable** outTable) {
return this->Here(ev, outTid, outTable);
}
// cutting while iterating hash map might dirty the parent table:
mork_change* CutHereTable(morkEnv* ev, mork_tid* outTid,
morkTable** outTable) {
return this->CutHere(ev, outTid, outTable);
}
#endif /*MORK_BEAD_OVER_NODE_MAPS*/
};
// 456789_123456789_123456789_123456789_123456789_123456789_123456789_123456789
#endif /* _MORKTABLE_ */