com.google.gwt.dev.js

Class JsSafeCloner.Cloner

java.lang.Object

com.google.gwt.dev.js.ast.JsVisitor

com.google.gwt.dev.js.JsSafeCloner.Cloner

Enclosing class:

JsSafeCloner

public static class JsSafeCloner.Cloner
extends JsVisitor

Implements actual cloning logic. We rely on the JsExpressions to provide traversal logic. The stack field is used to accumulate already-cloned JsExpression instances. One gotcha that falls out of this is that argument lists are on the stack in reverse order, so lists should be constructed via inserts, rather than appends.

Field Summary

Fields

Modifier and Type	Field and Description
protected Stack<JsExpression>	stack

Fields inherited from class com.google.gwt.dev.js.ast.JsVisitor

LVALUE_CONTEXT, UNMODIFIABLE_CONTEXT

Constructor Summary

Constructors

Constructor and Description
Cloner()

Method Summary

Modifier and Type	Method and Description
void	endVisit(JsArrayAccess x, JsContext ctx)
void	endVisit(JsArrayLiteral x, JsContext ctx)
void	endVisit(JsBinaryOperation x, JsContext ctx)
void	endVisit(JsBooleanLiteral x, JsContext ctx)
void	endVisit(JsConditional x, JsContext ctx)
void	endVisit(JsFunction x, JsContext ctx) The only functions that would get be visited are those being used as first-class objects.
void	endVisit(JsInvocation x, JsContext ctx) Cloning the invocation allows us to modify it without damaging other call sites.
void	endVisit(JsNameOf x, JsContext ctx)
void	endVisit(JsNameRef x, JsContext ctx) Do a deep clone of a JsNameRef.
void	endVisit(JsNew x, JsContext ctx)
void	endVisit(JsNullLiteral x, JsContext ctx)
void	endVisit(JsNumberLiteral x, JsContext ctx)
void	endVisit(JsNumericEntry x, JsContext ctx)
void	endVisit(JsPostfixOperation x, JsContext ctx)
void	endVisit(JsPrefixOperation x, JsContext ctx)
void	endVisit(JsRegExp x, JsContext ctx)
void	endVisit(JsStringLiteral x, JsContext ctx)
void	endVisit(JsThisRef x, JsContext ctx)
JsExpression	getExpression()
boolean	visit(JsObjectLiteral x, JsContext ctx)

Methods inherited from class com.google.gwt.dev.js.ast.JsVisitor

accept, acceptList, acceptLvalue, acceptWithInsertRemove, didChange, doAccept, doAcceptList, doAcceptLvalue, doAcceptWithInsertRemove, doTraverse, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, endVisit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Field Detail

stack

protected final Stack<JsExpression> stack

Constructor Detail

Cloner

public Cloner()

Method Detail

endVisit

public void endVisit(JsArrayAccess x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsArrayLiteral x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsBinaryOperation x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsBooleanLiteral x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsConditional x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsFunction x,
                     JsContext ctx)

The only functions that would get be visited are those being used as first-class objects.

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsInvocation x,
                     JsContext ctx)

Cloning the invocation allows us to modify it without damaging other call sites.

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsNameOf x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsNameRef x,
                     JsContext ctx)

Do a deep clone of a JsNameRef. Because JsNameRef chains are shared throughout the AST, you can't just go and change their qualifiers when re-writing an invocation.

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsNew x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsNullLiteral x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsNumberLiteral x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsNumericEntry x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

visit

public boolean visit(JsObjectLiteral x,
                     JsContext ctx)

Overrides:

visit in class JsVisitor

endVisit

public void endVisit(JsPostfixOperation x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsPrefixOperation x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsRegExp x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsStringLiteral x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

endVisit

public void endVisit(JsThisRef x,
                     JsContext ctx)

Overrides:

endVisit in class JsVisitor

getExpression

public JsExpression getExpression()