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Parser
Parser.LR
Parser.LR.Rule
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Class Parser.LR.Rule
- Description
This object is used to represent a BNF-rule in the LR parser.
- Variable
nonterminal
int Parser.LR.Rule.nonterminal
- Description
Non-terminal this rule reduces to.
- Variable
symbols
array(string|int) Parser.LR.Rule.symbols
- Description
The actual rule
- Variable
action
function|string Parser.LR.Rule.action
- Description
Action to do when reducing this rule.
function - call this function.
string - call this function by name in the object given to the parser.
The function is called with arguments corresponding to the values of
the elements of the rule. The return value of the function will be
the value of this non-terminal. The default rule is to return the first
argument.
- Variable
has_tokens
int Parser.LR.Rule.has_tokens
- Description
This rule contains tokens
- Variable
num_nonnullables
int Parser.LR.Rule.num_nonnullables
- Description
This rule has this many non-nullable symbols at the moment.
- Variable
number
int Parser.LR.Rule.number
- Description
Sequence number of this rule (used for conflict resolving)
Also used to identify the rule.
- Variable
pri
Priority Parser.LR.Rule.pri
- Description
Priority and associativity of this rule.
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