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statements
|--- :default
| |--- ::=
| |--- action
| |--- =>
| |--- [values]
|--- :start
| |--- ::=
| |--- graph_grammar
|--- graph_grammar
| |--- ::=
| |--- graph_definition
| |--- action
| |--- =>
| |--- graph
|--- graph_definition
| |--- ::=
| |--- node_definition
| |--- |
| |--- edge_definition
|--- node_definition
| |--- ::=
| |--- node_statement
| |--- |
| |--- node_statement
| |--- graph_definition
|--- node_statement
| |--- ::=
| |--- node_name
| |--- |
| |--- node_name
| |--- attribute_definition
| |--- |
| |--- node_statement
| |--- (',')
| |--- node_statement
|--- node_name
| |--- ::=
| |--- start_node
| |--- end_node
|--- :lexeme
| |--- ~
| |--- start_node
| |--- pause
| |--- =>
| |--- before
| |--- event
| |--- =>
| |--- start_node
|--- start_node
| |--- ~
| |--- '['
|--- :lexeme
| |--- ~
| |--- end_node
|--- end_node
| |--- ~
| |--- ']'
|--- edge_definition
| |--- ::=
| |--- edge_statement
| |--- |
| |--- edge_statement
| |--- graph_definition
|--- edge_statement
| |--- ::=
| |--- edge_name
| |--- |
| |--- edge_name
| |--- attribute_definition
| |--- |
| |--- edge_statement
| |--- (',')
| |--- edge_statement
|--- edge_name
| |--- ::=
| |--- directed_edge
| |--- |
| |--- undirected_edge
|--- :lexeme
| |--- ~
| |--- directed_edge
| |--- pause
| |--- =>
| |--- before
| |--- event
| |--- =>
| |--- directed_edge
|--- directed_edge
| |--- ~
| |--- '->'
|--- :lexeme
| |--- ~
| |--- undirected_edge
| |--- pause
| |--- =>
| |--- before
| |--- event
| |--- =>
| |--- undirected_edge
|--- undirected_edge
| |--- ~
| |--- '--'
|--- attribute_definition
| |--- ::=
| |--- attribute_statement
|--- attribute_statement
| |--- ::=
| |--- start_attributes
| |--- end_attributes
|--- :lexeme
| |--- ~
| |--- start_attributes
| |--- pause
| |--- =>
| |--- before
| |--- event
| |--- =>
| |--- start_attributes
|--- start_attributes
| |--- ~
| |--- '{'
|--- :lexeme
| |--- ~
| |--- end_attributes
|--- end_attributes
| |--- ~
| |--- '}'
|--- :discard
| |--- =>
| |--- whitespace
|--- whitespace
|--- ~
|--- [\s]