ModuleFileTracker (MPS.Core (JetBrains MPS 2019.1.0))

java.lang.Object
- jetbrains.mps.library.ModuleFileTracker

```
public final class ModuleFileTracker
extends Object
```
Simple VFS tracker that knows about modules and files they originate from and provides facilities that help to react with module reload/update according to VFS notifications events. Respects multiple modules per single file.
IMPLEMENTATION NOTE: not thread-safe

Since:

3.5

Constructor Summary

Constructors
Constructor Description

ModuleFileTracker()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`forget(IFile file)`	Discard tracked association between file and modules.
`void`	`forget(IFile file, SModule module)`	Discard specific association between file and module.
`void`	`forget(IFile file, SModuleReference module)`
`Map<SModuleReference,IFile>`	`getAffectedBy(Collection<IFile> files)`
`Map<SModuleReference,IFile>`	`getTrackedFor(Collection<IFile> files)`
`void`	`track(IFile file, SModule module)`	Associates given module with a file.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- ModuleFileTracker
```
public ModuleFileTracker()
```

Method Detail

track
```
public void track(@NotNull
                  IFile file,
                  @NotNull
                  SModule module)
```
Associates given module with a file. Multiple modules per single file are allowed. Multiple registration of the same File-Module pair is tolerated (XXX this is to avoid massive SLibrary refactoring, which may read same module and file).

Parameters:

file - origin of a module

module - module read from the file

forget
```
public void forget(@NotNull
                   IFile file)
```
Discard tracked association between file and modules. Does nothing if no association for the file is known.

Parameters:

file - origin of a module or few modules

forget

public void forget(@NotNull
                   IFile file,
                   @NotNull
                   SModule module)

Discard specific association between file and module. Does nothing if there's no such association.

Parameters:: file - origin of the module; module - module read from the file

forget

public void forget(@NotNull
                   IFile file,
                   @NotNull
                   SModuleReference module)

getAffectedBy

public Map<SModuleReference,IFile> getAffectedBy(Collection<IFile> files)

getTrackedFor

public Map<SModuleReference,IFile> getTrackedFor(Collection<IFile> files)