com.google.gwt.dev.cfg

Class Rule

java.lang.Object

com.google.gwt.dev.cfg.Rule

Direct Known Subclasses:

RuleFail, RuleGenerateWith, RuleReplaceWith

public abstract class Rule
extends Object

Abstract base class for various kinds of deferred binding rules.

Field Summary

Fields

Modifier and Type	Field and Description
protected RuntimeRebindRuleGenerator	runtimeRebindRuleGenerator

Constructor Summary

Constructors

Constructor and Description
Rule()

Method Summary

Modifier and Type	Method and Description
protected void	dispose()
protected abstract String	generateCreateInstanceExpression() Generate and return a String of Java source that will create an instance of whatever type this Rule intends to rebind to.
protected abstract String	generateMatchesExpression() Generate and return a String of Java source that will act as a condition to filter the runtime environment and only pass when the Rule's intended conditions are met.
void	generateRuntimeRebindClasses(TreeLogger logger, ModuleDef module, GeneratorContext context) Generate runtime rebind classes that perform the same rebinding behavior represented by the current Rule.
int	getFallbackEvaluationCost() Returns the cost of evaluation fallback binding values.
ConditionAll	getRootCondition()
boolean	isApplicable(TreeLogger logger, StandardGeneratorContext context, String typeName)
abstract RebindResult	realize(TreeLogger logger, StandardGeneratorContext context, String typeName)

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Field Detail

runtimeRebindRuleGenerator

protected RuntimeRebindRuleGenerator runtimeRebindRuleGenerator

Constructor Detail

Rule

public Rule()

Method Detail

generateRuntimeRebindClasses

public void generateRuntimeRebindClasses(TreeLogger logger,
                                         ModuleDef module,
                                         GeneratorContext context)
                                  throws UnableToCompleteException

Generate runtime rebind classes that perform the same rebinding behavior represented by the current Rule.

Throws:

UnableToCompleteException

getFallbackEvaluationCost

public int getFallbackEvaluationCost()

Returns the cost of evaluation fallback binding values. when isApplicable() is true, this value is meaningless when isApplicable() is false, [1,Integer.MAX_VALUE-1] means a relative scale of cost, where cost c is better than cost c+k Integer.MAX_VALUE implies no match.

Returns:

cost of evaluating fallback values.

getRootCondition

public ConditionAll getRootCondition()

isApplicable

public boolean isApplicable(TreeLogger logger,
                            StandardGeneratorContext context,
                            String typeName)
                     throws UnableToCompleteException

Throws:

UnableToCompleteException

realize

public abstract RebindResult realize(TreeLogger logger,
                                     StandardGeneratorContext context,
                                     String typeName)
                              throws UnableToCompleteException

Throws:

UnableToCompleteException

dispose

protected void dispose()

generateCreateInstanceExpression

protected abstract String generateCreateInstanceExpression()

Generate and return a String of Java source that will create an instance of whatever type this Rule intends to rebind to.

generateMatchesExpression

protected abstract String generateMatchesExpression()

Generate and return a String of Java source that will act as a condition to filter the runtime environment and only pass when the Rule's intended conditions are met.