Package com.google.common.css.compiler.passes

Class RemoveEmptyValues

java.lang.Object

com.google.common.css.compiler.ast.DefaultTreeVisitor

com.google.common.css.compiler.passes.RemoveEmptyValues

All Implemented Interfaces:

AtRuleHandler, CssCompilerPass, CssTreeVisitor

public class RemoveEmptyValues
extends DefaultTreeVisitor
implements CssCompilerPass

Compiler pass that removes empty values and their containing declaration nodes if they become empty.

Constructor Summary

Constructors

Constructor	Description
RemoveEmptyValues(MutatingVisitController visitController)

Method Summary

Modifier and Type	Method	Description
boolean	enterDefinition(CssDefinitionNode node)
boolean	enterValueNode(CssValueNode node)	Called before visiting a CssValueNode that is not a CssCompositeValueNode
void	leaveDeclaration(CssDeclarationNode node)	Called after visiting a CssDeclarationNode's sub trees
void	runPass()

Methods inherited from class com.google.common.css.compiler.ast.DefaultTreeVisitor

enterArgumentNode, enterAttributeSelector, enterBlock, enterCharSet, enterClassSelector, enterCombinator, enterComponent, enterCompositeValueNode, enterCompositeValueNodeOperator, enterConditionalBlock, enterConditionalRule, enterDeclaration, enterDeclarationBlock, enterFontFace, enterForLoop, enterFunctionNode, enterIdSelector, enterImportBlock, enterImportRule, enterKey, enterKeyBlock, enterKeyframeRuleset, enterKeyframesRule, enterMediaRule, enterMediaTypeListDelimiter, enterMixin, enterMixinDefinition, enterPageRule, enterPageSelector, enterPropertyValue, enterProvideNode, enterPseudoClass, enterPseudoElement, enterRequireNode, enterRuleset, enterSelector, enterSelectorBlock, enterTree, enterUnknownAtRule, leaveArgumentNode, leaveAttributeSelector, leaveBlock, leaveCharSet, leaveClassSelector, leaveCombinator, leaveComponent, leaveCompositeValueNode, leaveCompositeValueNodeOperator, leaveConditionalBlock, leaveConditionalRule, leaveDeclarationBlock, leaveDefinition, leaveFontFace, leaveForLoop, leaveFunctionNode, leaveIdSelector, leaveImportBlock, leaveImportRule, leaveKey, leaveKeyBlock, leaveKeyframeRuleset, leaveKeyframesRule, leaveMediaRule, leaveMediaTypeListDelimiter, leaveMixin, leaveMixinDefinition, leavePageRule, leavePageSelector, leavePropertyValue, leaveProvideNode, leavePseudoClass, leavePseudoElement, leaveRequireNode, leaveRuleset, leaveSelector, leaveSelectorBlock, leaveTree, leaveUnknownAtRule, leaveValueNode

Methods inherited from class java.lang.Object

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

Constructor Details

RemoveEmptyValues

public RemoveEmptyValues(MutatingVisitController visitController)

Method Details

enterDefinition

public boolean enterDefinition(CssDefinitionNode node)

Specified by:

enterDefinition in interface AtRuleHandler

Overrides:

enterDefinition in class DefaultTreeVisitor

Parameters:

node - node

Returns:

true if the contents of the rule should be visited, false otherwise. AtRuleHandler.leaveDefinition(CssDefinitionNode) will still be called.

enterValueNode

public boolean enterValueNode(CssValueNode node)

Description copied from interface: CssTreeVisitor

Called before visiting a CssValueNode that is not a CssCompositeValueNode

Specified by:

enterValueNode in interface CssTreeVisitor

Overrides:

enterValueNode in class DefaultTreeVisitor

leaveDeclaration

public void leaveDeclaration(CssDeclarationNode node)

Description copied from interface: CssTreeVisitor

Called after visiting a CssDeclarationNode's sub trees

Specified by:

leaveDeclaration in interface CssTreeVisitor

Overrides:

leaveDeclaration in class DefaultTreeVisitor

runPass

public void runPass()

Specified by:

runPass in interface CssCompilerPass