java.lang.Object
- com.google.javascript.jscomp.deps.ModuleResolver

Direct Known Subclasses:

BrowserModuleResolver, BrowserWithTransformedPrefixesModuleResolver, NodeModuleResolver
```
public abstract class ModuleResolver
extends java.lang.Object
```
Base class for algorithms that resolve JavaScript module references to input files.

Field Summary

Fields
Modifier and Type	Field	Description
`protected ErrorHandler`	`errorHandler`
`protected com.google.common.collect.ImmutableSet<java.lang.String>`	`modulePaths`	The set of all known input module URIs (including trailing .js), after normalization.
`protected com.google.common.collect.ImmutableList<java.lang.String>`	`moduleRootPaths`	Root URIs to match module roots against.

Constructor Summary

Constructors
Constructor	Description
`ModuleResolver(com.google.common.collect.ImmutableSet<java.lang.String> modulePaths, com.google.common.collect.ImmutableList<java.lang.String> moduleRootPaths, ErrorHandler errorHandler, ModuleLoader.PathEscaper pathEscaper)`

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected java.lang.String`	`canonicalizePath(java.lang.String scriptAddress, java.lang.String moduleAddress)`	Normalizes a module path reference.
`protected @Nullable java.lang.String`	`locate(java.lang.String scriptAddress, java.lang.String name)`	Locates the module with the given name, but returns null if there is no JS file in the expected location.
`abstract @Nullable java.lang.String`	`resolveJsModule(java.lang.String scriptAddress, java.lang.String moduleAddress, java.lang.String sourcename, int lineno, int colno)`
`java.lang.String`	`resolveModuleAsPath(java.lang.String scriptAddress, java.lang.String moduleAddress)`
`void`	`setErrorHandler(ErrorHandler errorHandler)`

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

Field Detail

modulePaths
```
protected final com.google.common.collect.ImmutableSet<java.lang.String> modulePaths
```
The set of all known input module URIs (including trailing .js), after normalization.

moduleRootPaths

protected final com.google.common.collect.ImmutableList<java.lang.String> moduleRootPaths

Root URIs to match module roots against.

errorHandler
```
protected ErrorHandler errorHandler
```

Constructor Detail

ModuleResolver

public ModuleResolver(com.google.common.collect.ImmutableSet<java.lang.String> modulePaths,
                      com.google.common.collect.ImmutableList<java.lang.String> moduleRootPaths,
                      ErrorHandler errorHandler,
                      ModuleLoader.PathEscaper pathEscaper)

Method Detail

resolveJsModule

public abstract @Nullable java.lang.String resolveJsModule(java.lang.String scriptAddress,
                                                           java.lang.String moduleAddress,
                                                           java.lang.String sourcename,
                                                           int lineno,
                                                           int colno)

resolveModuleAsPath

public java.lang.String resolveModuleAsPath(java.lang.String scriptAddress,
                                            java.lang.String moduleAddress)

locate

protected @Nullable java.lang.String locate(java.lang.String scriptAddress,
                                            java.lang.String name)

Locates the module with the given name, but returns null if there is no JS file in the expected location.

canonicalizePath

protected java.lang.String canonicalizePath(java.lang.String scriptAddress,
                                            java.lang.String moduleAddress)

Normalizes a module path reference. Includes escaping special characters and converting relative paths to absolute references.

setErrorHandler

public void setErrorHandler(ErrorHandler errorHandler)

Class ModuleResolver