Module tree

@package antlr3.tree @brief ANTLR3 runtime package, tree module

This module contains all support classes for AST construction and tree parsers.

Classes

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RewriteCardinalityException
@brief Base class for all exceptions thrown during AST rewrite construction.

RewriteEarlyExitException
@brief No elements within a (...)+ in a rewrite rule

RewriteEmptyStreamException
@brief Ref to ID or expr but no tokens in ID stream or subtrees in expr stream

Tree
@brief Abstract baseclass for tree nodes.

TreeAdaptor
@brief Abstract baseclass for tree adaptors.

BaseTree
@brief A generic tree implementation with no payload.

BaseTreeAdaptor
@brief A TreeAdaptor that works with any Tree implementation.

CommonTree
@brief A tree node that is wrapper for a Token object.

CommonErrorNode
A node representing erroneous token range in token stream

CommonTreeAdaptor
@brief A TreeAdaptor that works with any Tree implementation.

TreeNodeStream
@brief A stream of tree nodes

CommonTreeNodeStream
@brief A buffered stream of tree nodes.

TreeParser
@brief Baseclass for generated tree parsers.

TreeVisitor
Do a depth first walk of a tree, applying pre() and post() actions we go.

RewriteRuleElementStream
@brief Internal helper class.

RewriteRuleTokenStream
@brief Internal helper class.

RewriteRuleSubtreeStream
@brief Internal helper class.

RewriteRuleNodeStream
Queues up nodes matched on left side of -> in a tree parser.

TreeRuleReturnScope
This is identical to the ParserRuleReturnScope except that the start property is a tree nodes not Token object when you are parsing trees.

Variables

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INVALID_NODE = CommonTree(INVALID_TOKEN)

__package__ = 'schrodinger.application.desmond.antlr3'