Package antlr
Class TreeBlockContext
java.lang.Object
antlr.BlockContext
antlr.TreeBlockContext
The context needed to add root,child elements to a Tree. There
is only one alternative (i.e., a list of children). We subclass to
specialize. MakeGrammar.addElementToCurrentAlt will work correctly
now for either a block of alts or a Tree child list.
The first time addAlternativeElement is called, it sets the root element
rather than adding it to one of the alternative lists. Rather than have
the grammar duplicate the rules for grammar atoms etc... we use the same
grammar and same refToken behavior etc... We have to special case somewhere
and here is where we do it.
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Field Summary
FieldsFields inherited from class antlr.BlockContext
altNum, block, blockEnd
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Constructor Summary
Constructors -
Method Summary
Methods inherited from class antlr.BlockContext
currentAlt, currentElement
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Field Details
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nextElementIsRoot
protected boolean nextElementIsRoot
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Constructor Details
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TreeBlockContext
TreeBlockContext()
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Method Details
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addAlternativeElement
- Overrides:
addAlternativeElement
in classBlockContext
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