Page Speed Optimization Libraries  1.7.30.1
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net_instaweb::SingleRewriteContext Class Reference

#include "single_rewrite_context.h"

Inheritance diagram for net_instaweb::SingleRewriteContext:
net_instaweb::RewriteContext net_instaweb::CssFilter::Context net_instaweb::CssFlattenImportsContext net_instaweb::FakeFilter::Context net_instaweb::InPlaceRewriteContext net_instaweb::NestedFilter::Context net_instaweb::SimpleTextFilter::Context

List of all members.

Public Member Functions

 SingleRewriteContext (RewriteDriver *driver, RewriteContext *parent, ResourceContext *resource_context)

Protected Member Functions

virtual void RewriteSingle (const ResourcePtr &input, const OutputResourcePtr &output)=0
 Subclasses of SingleRewriteContext must override this:
virtual bool Partition (OutputPartitions *partitions, OutputResourceVector *outputs)
 SingleRewriteContext takes care of these methods from RewriteContext:
virtual void Rewrite (int partition_index, CachedResult *partition, const OutputResourcePtr &output)

Detailed Description

Class that unifies tasks common to building rewriters for filters that only do one-for-one URL substitutions.


Constructor & Destructor Documentation

net_instaweb::SingleRewriteContext::SingleRewriteContext ( RewriteDriver driver,
RewriteContext parent,
ResourceContext *  resource_context 
)

Transfers ownership of resource_context, which must be NULL or allocated with 'new'.


Member Function Documentation

virtual void net_instaweb::SingleRewriteContext::Rewrite ( int  partition_index,
CachedResult *  partition,
const OutputResourcePtr &  output 
) [protected, virtual]

Takes a completed rewrite partition and rewrites it. When complete, implementations should call RewriteDone(kRewriteOk) if they successfully created an output resource using RewriteDriver::Write, and RewriteDone(kRewriteFailed) if they didn't. They may also call RewriteDone(kTooBusy) in case system load/resource usage makes it dangerous for the filter to do optimization at this time.

Any information about the inputs or output that may be needed to update the containing document should be stored inside the CachedResult.

If implementors wish to rewrite resources referred to from within the inputs (e.g. images in CSS), they may create nested rewrite contexts and call AddNestedContext() on each, and then StartNestedTasks() when all have been added.

Todo:
TODO(jmarantz): check for resource completion from a different thread (while we were waiting for resource fetches) when Rewrite gets called.

Implements net_instaweb::RewriteContext.


The documentation for this class was generated from the following file:
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