Package nonapi.io.github.classgraph.classpath

Class ModuleFinder

java.lang.Object

nonapi.io.github.classgraph.classpath.ModuleFinder

public class ModuleFinder
extends java.lang.Object

A class to find the visible modules.

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	forceScanJavaClassPath	If true, must forcibly scan java.class.path, since there was an anonymous module layer.
private java.util.List<ModuleRef>	nonSystemModuleRefs	The non system module refs.
private ReflectionUtils	reflectionUtils
private java.util.List<ModuleRef>	systemModuleRefs	The system module refs.

Constructor Summary

Constructors

Constructor	Description
ModuleFinder(java.lang.Class<?>[] callStack, ScanSpec scanSpec, boolean scanNonSystemModules, boolean scanSystemModules, ReflectionUtils reflectionUtils, LogNode log)	A class to find the visible modules.

Method Summary

Modifier and Type	Method	Description
private void	findLayerOrder(java.lang.Object layer, java.util.Set<java.lang.Object> layerVisited, java.util.Set<java.lang.Object> parentLayers, java.util.Deque<java.lang.Object> layerOrderOut)	Recursively find the topological sort order of ancestral layers.
private java.util.List<ModuleRef>	findModuleRefs(java.util.LinkedHashSet<java.lang.Object> layers, ScanSpec scanSpec, LogNode log)	Get all visible ModuleReferences in a list of layers.
private java.util.List<ModuleRef>	findModuleRefsFromCallstack(java.lang.Class<?>[] callStack, ScanSpec scanSpec, boolean scanNonSystemModules, LogNode log)	Get all visible ModuleReferences in all layers, given an array of stack frame Class<?> references.
boolean	forceScanJavaClassPath()	Force scan java class path.
java.util.List<ModuleRef>	getNonSystemModuleRefs()	Get the non-system modules as ModuleRef wrappers.
java.util.List<ModuleRef>	getSystemModuleRefs()	Get the system modules as ModuleRef wrappers.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

systemModuleRefs

private java.util.List<ModuleRef> systemModuleRefs

The system module refs.

nonSystemModuleRefs

private java.util.List<ModuleRef> nonSystemModuleRefs

The non system module refs.

forceScanJavaClassPath

private boolean forceScanJavaClassPath

If true, must forcibly scan java.class.path, since there was an anonymous module layer.

reflectionUtils

private final ReflectionUtils reflectionUtils

Constructor Detail

ModuleFinder

public ModuleFinder(java.lang.Class<?>[] callStack,
                    ScanSpec scanSpec,
                    boolean scanNonSystemModules,
                    boolean scanSystemModules,
                    ReflectionUtils reflectionUtils,
                    LogNode log)

A class to find the visible modules.

Parameters:

callStack - the callstack.

scanSpec - The scan spec.

scanNonSystemModules - whether to scan unnamed and non-system modules

scanSystemModules - whether to scan system modules

log - The log.

Method Detail

getSystemModuleRefs

public java.util.List<ModuleRef> getSystemModuleRefs()

Get the system modules as ModuleRef wrappers.

Returns:

The system modules as ModuleRef wrappers, or null if no modules were found (e.g. on JDK 7 or 8).

getNonSystemModuleRefs

public java.util.List<ModuleRef> getNonSystemModuleRefs()

Get the non-system modules as ModuleRef wrappers.

Returns:

The non-system modules as ModuleRef wrappers, or null if no modules were found (e.g. on JDK 7 or 8).

forceScanJavaClassPath

public boolean forceScanJavaClassPath()

Force scan java class path.

Returns:

If true, must forcibly scan java.class.path, since there was an anonymous module layer.

findLayerOrder

private void findLayerOrder(java.lang.Object layer,
                            java.util.Set<java.lang.Object> layerVisited,
                            java.util.Set<java.lang.Object> parentLayers,
                            java.util.Deque<java.lang.Object> layerOrderOut)

Recursively find the topological sort order of ancestral layers.

(The JDK (as of 10.0.0.1) uses a broken (non-topological) DFS ordering for layer resolution in ModuleLayer#layers() and Configuration#configurations() but when I reported this bug on the Jigsaw mailing list, Alan didn't see what the problem was.)

Parameters:

layer - the layer

layerVisited - layer visited

parentLayers - the parent layers

layerOrderOut - the layer order

findModuleRefs

private java.util.List<ModuleRef> findModuleRefs(java.util.LinkedHashSet<java.lang.Object> layers,
                                                 ScanSpec scanSpec,
                                                 LogNode log)

Get all visible ModuleReferences in a list of layers.

Parameters:

layers - the layers

scanSpec - the scan spec

log - the log

Returns:

the list

findModuleRefsFromCallstack

private java.util.List<ModuleRef> findModuleRefsFromCallstack(java.lang.Class<?>[] callStack,
                                                              ScanSpec scanSpec,
                                                              boolean scanNonSystemModules,
                                                              LogNode log)

Get all visible ModuleReferences in all layers, given an array of stack frame Class<?> references.

Parameters:

callStack - the call stack

scanSpec - the scan spec

scanNonSystemModules - whether to include unnamed and non-system modules

log - the log

Returns:

the list