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

Class ResolveCustomFunctionNodesForChunks<T>

java.lang.Object

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

com.google.common.css.compiler.passes.ResolveCustomFunctionNodes

com.google.common.css.compiler.passes.ResolveCustomFunctionNodesForChunks<T>

All Implemented Interfaces:

AtRuleHandler, CssCompilerPass, CssTreeVisitor

public class ResolveCustomFunctionNodesForChunks<T>
extends ResolveCustomFunctionNodes

This compiler pass evaluates CssCustomFunctionNode instances only when they have no references as arguments. Otherwise, it creates a new definition for the function call even if it's already a definition. At the end, the main tree is free of function calls; all the new definitions are collected in a map of ConstantDefinitions per chunk; there are no nested calls.

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	DEF_PREFIX	The prefix for definitions of calls with references

Fields inherited from class com.google.common.css.compiler.passes.ResolveCustomFunctionNodes

functionMap

Constructor Summary

Constructors

Constructor	Description
ResolveCustomFunctionNodesForChunks(MutatingVisitController visitController, ErrorManager errorManager, java.util.Map<java.lang.String,GssFunction> functionMap, boolean allowUnknownFunctions, java.util.Set<java.lang.String> allowedNonStandardFunctions, com.google.common.base.Function<T,java.lang.String> nextUniqueSuffix)	Constructs the pass.

Method Summary

Modifier and Type	Method	Description
protected java.util.List<CssValueNode>	evaluateFunction(CssCustomFunctionNode node, GssFunction function, java.util.List<CssValueNode> arguments, ErrorManager errorManager)	Evaluates the given function node.
java.util.Map<T,ConstantDefinitions>	getConstantDefinitions()	Gets the constant definitions for the replaced calls with references.

Methods inherited from class com.google.common.css.compiler.passes.ResolveCustomFunctionNodes

leaveFunctionNode, 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, enterDefinition, 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, enterValueNode, leaveArgumentNode, leaveAttributeSelector, leaveBlock, leaveCharSet, leaveClassSelector, leaveCombinator, leaveComponent, leaveCompositeValueNode, leaveCompositeValueNodeOperator, leaveConditionalBlock, leaveConditionalRule, leaveDeclaration, leaveDeclarationBlock, leaveDefinition, leaveFontFace, leaveForLoop, 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

Field Detail

DEF_PREFIX

public static final java.lang.String DEF_PREFIX

The prefix for definitions of calls with references

See Also:

Constant Field Values

Constructor Detail

ResolveCustomFunctionNodesForChunks

public ResolveCustomFunctionNodesForChunks(MutatingVisitController visitController,
                                           ErrorManager errorManager,
                                           java.util.Map<java.lang.String,GssFunction> functionMap,
                                           boolean allowUnknownFunctions,
                                           java.util.Set<java.lang.String> allowedNonStandardFunctions,
                                           com.google.common.base.Function<T,java.lang.String> nextUniqueSuffix)

Constructs the pass.

Parameters:

visitController - the visit controller

errorManager - the error manager

functionMap - the map from function names to resolve to GSS functions

allowUnknownFunctions - whether to allow unknown function calls, leaving them as is, instead of reporting an error

nextUniqueSuffix - a function from a chunk to a globally unique suffix

Method Detail

evaluateFunction

protected java.util.List<CssValueNode> evaluateFunction(CssCustomFunctionNode node,
                                                        GssFunction function,
                                                        java.util.List<CssValueNode> arguments,
                                                        ErrorManager errorManager)
                                                 throws GssFunctionException

Description copied from class: ResolveCustomFunctionNodes

Evaluates the given function node.

Subclasses may sublcass this method to change the evaluation process in some circumstances.

Overrides:

evaluateFunction in class ResolveCustomFunctionNodes

Parameters:

node - the function node to evaluate

function - the GSS function matching this node

arguments - the arguments of this node

errorManager - the error manager passed into the GSS function call

Returns:

the result of the evaluation as a list of value nodes

Throws:

GssFunctionException - if the function call is invalid

getConstantDefinitions

public java.util.Map<T,ConstantDefinitions> getConstantDefinitions()

Gets the constant definitions for the replaced calls with references. Chunks which have no such calls are not in the map.

Returns:

A map of constant definitions per chunk