JsAst

java.lang.Object
- com.google.javascript.jscomp.JsAst

All Implemented Interfaces:

SourceAst
```
public class JsAst
extends java.lang.Object
implements SourceAst
```
Generates an AST for a JavaScript source file.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`JsAst.ParseResult`	Simple class to share parse results between compilation jobs
`static class`	`JsAst.RhinoError`	Representation of Rhino parser error.

Constructor Summary

Constructors
Constructor Description

JsAst(SourceFile sourceFile)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clearAst()`	Removes any references to root node of the AST.
`Node`	`getAstRoot(AbstractCompiler compiler)`	Gets the root node of the AST for the source file this represents.
`FeatureSet`	`getFeatures(AbstractCompiler compiler)`
`InputId`	`getInputId()`
`SourceFile`	`getSourceFile()`	Returns the source file the generated AST represents.

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

- Constructor Detail
  - JsAst
```
public JsAst(SourceFile sourceFile)
```
- Method Detail
  - getAstRoot
```
public Node getAstRoot(AbstractCompiler compiler)
```
    Description copied from interface: SourceAst
    
    Gets the root node of the AST for the source file this represents. The AST is lazily instantiated and cached. This node is always non-null, even in the case of parse errors.
    
    Specified by:
    
    getAstRoot in interface SourceAst
  - clearAst
```
public void clearAst()
```
    Description copied from interface: SourceAst
    
    Removes any references to root node of the AST. If it is requested again, another parse will be performed. This method is needed to allow the ASTs to be garbage collected if the inputs are still around after compilation.
    
    Specified by:
    
    clearAst in interface SourceAst
  - getInputId
```
public InputId getInputId()
```
    Specified by:
    
    getInputId in interface SourceAst
    
    Returns:
    
    The input id associated with this AST
  - getSourceFile
```
public SourceFile getSourceFile()
```
    Description copied from interface: SourceAst
    
    Returns the source file the generated AST represents.
    
    Specified by:
    
    getSourceFile in interface SourceAst
  - getFeatures
```
public FeatureSet getFeatures(AbstractCompiler compiler)
```