ClassHierarchyAnalysis

java.lang.Object
- com.ensoftcorp.open.cg.analysis.CGAnalysis
- - com.ensoftcorp.open.cg.analysis.ClassHierarchyAnalysis

```
public class ClassHierarchyAnalysis
extends CGAnalysis
```
This analysis builds a call graph using Class Hierarchy Analysis (CHA). In terms of precision, this is the least precise analysis compared to RTA, VTA, and 0-CFA, but is also the cheapest analysis of the available algorithms. Several other algorithms (except 0-CFA) use CHA as a starting input for their analyses. Note: Atlas already has an implementation of CHA baked-in, so its pointless to do this analysis, except for the intellectual exercise of doing so.

Author:

Ben Holland

Field Summary

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`CALL`
`static java.lang.String`	`LIBRARY_CALL`
`static java.lang.String`	`LIBRARY_PER_CONTROL_FLOW`
`static java.lang.String`	`PER_CONTROL_FLOW`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String[]`	`getCallEdgeTags()`	Returns the set of tags applied to edges during call graph construction
`static ClassHierarchyAnalysis`	`getInstance()`
`java.lang.String`	`getName()`
`java.lang.String[]`	`getPerControlFlowEdgeTags()`	Returns the set of tags applied to per control flow edges during call graph construction

Methods inherited from class com.ensoftcorp.open.cg.analysis.CGAnalysis
getCallGraph, getPerControlFlowGraph, hasRun, run

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

- Field Detail
  - CALL
```
public static final java.lang.String CALL
```
    See Also:
    
    Constant Field Values
  - PER_CONTROL_FLOW
```
public static final java.lang.String PER_CONTROL_FLOW
```
    See Also:
    
    Constant Field Values
  - LIBRARY_CALL
```
public static final java.lang.String LIBRARY_CALL
```
    See Also:
    
    Constant Field Values
  - LIBRARY_PER_CONTROL_FLOW
```
public static final java.lang.String LIBRARY_PER_CONTROL_FLOW
```
    See Also:
    
    Constant Field Values
- Method Detail
  - getInstance
```
public static ClassHierarchyAnalysis getInstance()
```
  - getCallEdgeTags
```
public java.lang.String[] getCallEdgeTags()
```
    Description copied from class: CGAnalysis
    
    Returns the set of tags applied to edges during call graph construction
    
    Specified by:
    
    getCallEdgeTags in class CGAnalysis
    
    Returns:
  - getPerControlFlowEdgeTags
```
public java.lang.String[] getPerControlFlowEdgeTags()
```
    Description copied from class: CGAnalysis
    
    Returns the set of tags applied to per control flow edges during call graph construction
    
    Specified by:
    
    getPerControlFlowEdgeTags in class CGAnalysis
    
    Returns:
  - getName
```
public java.lang.String getName()
```
    Specified by:
    
    getName in class CGAnalysis