Package com.google.common.css.compiler.ast

Class CssCustomFunctionNode.CssCustomFunctionNodeProxy

java.lang.Object

com.google.common.css.compiler.ast.CssNode

com.google.common.css.compiler.ast.CssValueNode

com.google.common.css.compiler.ast.CssFunctionNode

com.google.common.css.compiler.ast.CssCustomFunctionNode

com.google.common.css.compiler.ast.CssCustomFunctionNode.CssCustomFunctionNodeProxy

All Implemented Interfaces:

ChunkAware, Proxiable<CssCustomFunctionNode>, Locatable

Enclosing class:

CssCustomFunctionNode

public static class CssCustomFunctionNode.CssCustomFunctionNodeProxy
extends CssCustomFunctionNode

Copy-on-Write proxy for CssCustomFunctionNode used to avoid copying of function call subtrees in ReplaceConstantReferences pass. It behaves as a proxy of the original node until a write operation happens. When the first write operation happens, proxy node copies the original node and since then acts as a plain CssCustomFunctionNode.

NOTE(dgajda): Proxied custom function nodes are also replaced by proxies of themselves to disallow changes, which would be visible to all proxy nodes. Only one kind of changes is propagated to proxy nodes - this is setting of function computation results.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.common.css.compiler.ast.CssCustomFunctionNode

CssCustomFunctionNode.CssCustomFunctionNodeProxy

Nested classes/interfaces inherited from class com.google.common.css.compiler.ast.CssFunctionNode

CssFunctionNode.Function

Field Summary

Fields inherited from class com.google.common.css.compiler.ast.CssCustomFunctionNode

resultNodes

Constructor Summary

Constructors

Constructor	Description
CssCustomFunctionNodeProxy(CssCustomFunctionNode function)	Constructs the node proxy.

Method Summary

Modifier and Type	Method	Description
CssCustomFunctionNode	createProxy()	Creates the proxy object.
CssFunctionArgumentsNode	getArguments()
List<CssValueNode>	getResult()
void	setArguments(CssFunctionArgumentsNode arguments)
void	setResult(List<CssValueNode> functionResult)	Sets the results of function computation for this node, can set results on the proxied node.

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

deepCopy, fixupFunctionArguments, getFunctionName, toString

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

getChunk, getFunction, getValue, setChunk

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

getIsDefault, setIsDefault, setValue

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

ancestors, appendComment, deepCopyNodes, equals, getComments, getParent, getShouldBeFlipped, getSourceCodeLocation, getVisitController, hasComment, hashCode, inFunArgs, setComments, setShouldBeFlipped, setSourceCodeLocation

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

CssCustomFunctionNodeProxy

public CssCustomFunctionNodeProxy(CssCustomFunctionNode function)

Constructs the node proxy. It uses a special super class constructor which avoids unnecessary initialization of arguments node.

Parameters:

function - the proxied node

Method Details

getArguments

public CssFunctionArgumentsNode getArguments()

Overrides:

getArguments in class CssFunctionNode

setArguments

public void setArguments(CssFunctionArgumentsNode arguments)

Overrides:

setArguments in class CssCustomFunctionNode

createProxy

public CssCustomFunctionNode createProxy()

Creates the proxy object. If the original object is immutable and does not have any children, it can return itself.

Specified by:

createProxy in interface Proxiable<CssCustomFunctionNode>

Overrides:

createProxy in class CssCustomFunctionNode

Returns:

the copy-on-write proxy for this node

getResult

public List<CssValueNode> getResult()

Overrides:

getResult in class CssCustomFunctionNode

Returns:

cached result of function value computation

setResult

public void setResult(List<CssValueNode> functionResult)

Sets the results of function computation for this node, can set results on the proxied node. This is harmless because proxied node is exactly the same as proxy node, and function computation results are a derivative of function arguments.

Overrides:

setResult in class CssCustomFunctionNode

Parameters:

functionResult - the list of nodes returned by the call to the GssFunction