VariableUsageResolver (cpg 1.1 API)

java.lang.Object
- de.fraunhofer.aisec.cpg.passes.VariableUsageResolver

All Implemented Interfaces:

Pass, java.util.function.Consumer<TranslationResult>
```
public class VariableUsageResolver
extends java.lang.Object
implements Pass
```
Creates new connections between the place where a variable is declared and where it is used.
A field access is modeled with a MemberExpression. After AST building, its base and member references are set to DeclaredReferenceExpression stubs. This pass resolves those references and makes the member point to the appropriate FieldDeclaration and the base to the "this" FieldDeclaration of the containing class. It is also capable of resolving references to fields that are inherited from a superclass and thus not declared in the actual base class. When base or member declarations are not found in the graph, a new "dummy" FieldDeclaration is being created that is then used to collect all usages to the same unknown declaration. DeclaredReferenceExpression stubs are removed from the graph after being resolved.
A local variable access is modeled directly with a DeclaredReferenceExpression. This step of the pass doesn't remove the DeclaredReferenceExpression nodes like in the field usage case but rather makes their "refersTo" point to the appropriate ValueDeclaration.

Constructor Summary

Constructors
Constructor Description

VariableUsageResolver()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`accept(TranslationResult result)`
`void`	`cleanup()`
`LanguageFrontend`	`getLang()`	We do not want the passes to depend on a language frontend
`void`	`setLang(LanguageFrontend lang)`	We do not want the passes to depend on a language frontend

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

Methods inherited from interface java.util.function.Consumer
andThen

Methods inherited from interface de.fraunhofer.aisec.cpg.passes.Pass
createUnknownTranslationUnit

- Constructor Detail
  - VariableUsageResolver
```
public VariableUsageResolver()
```
- Method Detail
  - cleanup
```
public void cleanup()
```
    Specified by:
    
    cleanup in interface Pass
  - getLang
```
public LanguageFrontend getLang()
```
    Description copied from interface: Pass
    
    We do not want the passes to depend on a language frontend
    
    Specified by:
    
    getLang in interface Pass
    
    Returns:
    
    might be null, as it is not designed to be used anymore
  - setLang
```
public void setLang(LanguageFrontend lang)
```
    Description copied from interface: Pass
    
    We do not want the passes to depend on a language frontend
    
    Specified by:
    
    setLang in interface Pass
  - accept
```
public void accept(TranslationResult result)
```
    Specified by:
    
    accept in interface java.util.function.Consumer<TranslationResult>