Package com.scriptbasic.syntax

Class GenericNestedStructureHouseKeeper

java.lang.Object
com.scriptbasic.syntax.AbstractNestedStructureHouseKeeper
com.scriptbasic.syntax.GenericNestedStructureHouseKeeper
All Implemented Interfaces:
NestedStructureHouseKeeper
public final class GenericNestedStructureHouseKeeper extends AbstractNestedStructureHouseKeeper
This version just does not nothing special to recover from error.
Author:
Peter Verhas date June 11, 2012

  • Constructor Details

    • GenericNestedStructureHouseKeeper

      public GenericNestedStructureHouseKeeper(LexicalAnalyzer analyzer)

  • Method Details

    • pop

      public <T extends NestedStructure> T pop(Class<T> expectedClass) throws AnalysisException
      Description copied from interface: NestedStructureHouseKeeper
      Pops one element from the stack.

      Note that nested element have to be pushed on the stack nested. If we get an element off the stack that was not expected it means syntax error and therefore in this case exception is thrown.

      When exception was thrown the functioning of the object is not defined by this interface. Some implementation may seek the appropriate element in the stack and throw off all top element until a proper type of element is found assuming that the user forgot to close some internal programming structured in the scripted language. Other implementations may follow more complex strategy to recover from such an error. In either case the sole reason of further syntax analysis is to discover as many syntax error as possible following the first one.

      Specified by:
      pop in interface NestedStructureHouseKeeper
      Overrides:
      pop in class AbstractNestedStructureHouseKeeper
      Type Parameters:
      T - expected type of the element
      Parameters:
      expectedClass - the expected class of the element
      Returns:
      the top element
      Throws:
      AnalysisException - when the top element of the stack is not the type that we expect