com.google.javascript.jscomp

Class TemplateAstMatcher

java.lang.Object

com.google.javascript.jscomp.TemplateAstMatcher

public final class TemplateAstMatcher
extends Object

A matcher that can take an arbitrary AST and use it as a template to find matches in another. As this matcher potentially matches against every node in the AST it is tuned to avoid generating GC garbage. It first checks the AST shape without types and then successful checks the associated types.

Constructor Summary

Constructors

Constructor and Description
TemplateAstMatcher(AbstractCompiler compiler, Node templateFunctionNode, TypeMatchingStrategy typeMatchingStrategy) Constructs this matcher with a Function node that serves as the template to match all other nodes against.

Method Summary

Modifier and Type	Method and Description
Map<String,Node>	getTemplateNodeToMatchMap() Returns a map from named template Nodes (such as parameters or local variables) to Nodes that were matches from the last matched template.
boolean	isLooseMatch()
boolean	matches(Node n)

Methods inherited from class java.lang.Object

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

Constructor Detail

TemplateAstMatcher

public TemplateAstMatcher(AbstractCompiler compiler,
                          Node templateFunctionNode,
                          TypeMatchingStrategy typeMatchingStrategy)

Constructs this matcher with a Function node that serves as the template to match all other nodes against. The body of the function will be used to match against.

Method Detail

matches

public boolean matches(Node n)

Parameters:

n - The node to check.

Returns:

Whether the node is matches the template.

isLooseMatch

public boolean isLooseMatch()

Returns:

Whether the last match succeeded due to loose type information.

getTemplateNodeToMatchMap

public Map<String,Node> getTemplateNodeToMatchMap()

Returns a map from named template Nodes (such as parameters or local variables) to Nodes that were matches from the last matched template.