com.google.javascript.jscomp

Class JsAst

java.lang.Object

com.google.javascript.jscomp.JsAst

All Implemented Interfaces:

SourceAst, java.io.Serializable

public class JsAst
extends java.lang.Object
implements SourceAst

Generates an AST for a JavaScript source file.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and 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 and Description
JsAst(SourceFile sourceFile)

Method Summary

Modifier and Type	Method and 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.
void	setSourceFile(SourceFile file) Sets 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

setSourceFile

public void setSourceFile(SourceFile file)

Description copied from interface: SourceAst

Sets the source file the generated AST represents. This can be called after deserializing if access to the source file is needed. If a different file is provided than that with which this was created, an IllegalStateException will be thrown.

Specified by:

setSourceFile in interface SourceAst

getFeatures

public FeatureSet getFeatures(AbstractCompiler compiler)