com.google.dart.compiler.backend.js
Class JsFirstExpressionVisitor

java.lang.Object
  JsVisitor
      com.google.dart.compiler.backend.js.ast.RecursiveJsVisitor
          com.google.dart.compiler.backend.js.JsFirstExpressionVisitor

public class JsFirstExpressionVisitor
extends RecursiveJsVisitor

Determines if an expression statement needs to be surrounded by parentheses.

The statement or the left-most expression needs to be surrounded by parentheses if the left-most expression is an object literal or a function object. Function declarations do not need parentheses.

For example the following require parentheses:

• { key : 'value'}
• { key : 'value'}.key
• function () {return 1;}()
• function () {return 1;}.prototype

The following do not require parentheses:

• var x = { key : 'value'}
• "string" + { key : 'value'}.key
• function func() {}
• function() {}

Method Summary

static boolean	exec(JsExpressionStatement statement)
void	visitArray(JsArrayLiteral x)
void	visitArrayAccess(JsArrayAccess x)
void	visitBinaryExpression(JsBinaryOperation x)
void	visitConditional(JsConditional x)
void	visitFunction(JsFunction x)
void	visitInvocation(JsInvocation invocation)
void	visitNameRef(JsNameRef nameRef)
void	visitNew(JsNew x)
void	visitObjectLiteral(JsObjectLiteral x)
void	visitPostfixOperation(JsPostfixOperation x)
void	visitPrefixOperation(JsPrefixOperation x)

Methods inherited from class com.google.dart.compiler.backend.js.ast.RecursiveJsVisitor

visitElement

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

exec

public static boolean exec(JsExpressionStatement statement)

visitArrayAccess

public void visitArrayAccess(@NotNull
                             JsArrayAccess x)

visitArray

public void visitArray(@NotNull
                       JsArrayLiteral x)

visitBinaryExpression

public void visitBinaryExpression(@NotNull
                                  JsBinaryOperation x)

visitConditional

public void visitConditional(@NotNull
                             JsConditional x)

visitFunction

public void visitFunction(@NotNull
                          JsFunction x)

visitInvocation

public void visitInvocation(@NotNull
                            JsInvocation invocation)

visitNameRef

public void visitNameRef(@NotNull
                         JsNameRef nameRef)

visitNew

public void visitNew(@NotNull
                     JsNew x)

visitObjectLiteral

public void visitObjectLiteral(@NotNull
                               JsObjectLiteral x)

visitPostfixOperation

public void visitPostfixOperation(@NotNull
                                  JsPostfixOperation x)

visitPrefixOperation

public void visitPrefixOperation(@NotNull
                                 JsPrefixOperation x)