Package com.google.javascript.jscomp

Class TemplateAstMatcher

  • public final class TemplateAstMatcher
extends java.lang.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.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.util.Map<java.lang.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 java.util.Map<java.lang.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.