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

Class UnsafeMergeRulesetNodes

java.lang.Object

com.google.common.css.compiler.passes.UnsafeMergeRulesetNodes

All Implemented Interfaces:

CssCompilerPass

public class UnsafeMergeRulesetNodes
extends Object
implements CssCompilerPass

Compiler pass that merges rulesets aggressively. The ordering of the rulesets ensures that shorthand properties appear before their detailed properties, and that the ordering of conflicting shorthand properties is preserved. It assumes all other ordering is irrelevant. When the MarkRemovableRulesetNodes pass is run before this pass, the assumptions of this pass will be valid if no DOM element matches two or more selectors of the same specificity with conflicting declarations. For example, selectors .FOO and .BAR might conflict if these classes co-occur on a DOM element. As another example, .FOO span and .BAR span might conflict say if a span DOM element has a parent with a FOO class and a grandparent with a BAR class.

Constructor Summary

Constructors

Constructor	Description
UnsafeMergeRulesetNodes(CssTree tree, boolean byPartition, boolean skipping)	Constructor.

Method Summary

Modifier and Type	Method	Description
void	runPass()

Methods inherited from class java.lang.Object

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

Constructor Details

UnsafeMergeRulesetNodes

public UnsafeMergeRulesetNodes(CssTree tree,
 boolean byPartition,
 boolean skipping)

Constructor.

This pass runs in two modes, depending on the value of byPartition. If byPartition is true, all declarations on a selector are first grouped by their partition (as defined by CssPropertyNode.getPartition()). Then, selectors which have the same declarations for a partition are grouped together into a ruleset. If byPartition is false (recommended), partitioning is only performed on order-dependent partitions (as defined by ORDER_DEPENDENT_PARTITIONS.

Parameters:

tree - the tree to run the pass on

byPartition - whether to group all declarations by partition (and not just the ones such as border where order matters)

skipping - whether to skip certain properties as defined by SkippingTreeVisitor

Method Details

runPass

public void runPass()

Specified by:

runPass in interface CssCompilerPass