Class Parser
java.lang.Object
java_cup.runtime.lr_parser
weka.filters.unsupervised.instance.subsetbyexpression.Parser
public class Parser
extends java_cup.runtime.lr_parser
CUP v0.11a beta 20060608 generated parser.
- Version:
- Wed Jun 26 14:32:21 NZST 2013
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Field Summary
Fields inherited from class java_cup.runtime.lr_parser
symbolFactory
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionshort[][]
Access to parse-action table.java_cup.runtime.Symbol
Invoke a user supplied parse action.int
EOF_sym()
EOF
Symbol index.int
error
Symbol index.static Instances
Filters the input dataset against the provided expression.Returns the current attribute - attribute-type relation in use.Returns the result of the evaluation.Returns the current variable - value relation in use.static Object
Returns either a String object for nominal attributes or a Double for numeric ones.static void
Runs the parser from commandline.short[][]
Access to production table.short[][]
Access toreduce_goto
table.void
setAttributeTypes
(Hashtable value) Sets the attribute - attribute-type relation to use.void
Sets the result of the evaluation.void
setSymbols
(HashMap value) Sets the variable - value relation to use.int
Indicates start production.int
Indicates start state.Methods inherited from class java_cup.runtime.lr_parser
debug_message, debug_parse, debug_reduce, debug_shift, debug_stack, done_parsing, dump_stack, expected_token_ids, getScanner, getSymbolContainer, getSymbolFactory, parse, report_error, report_fatal_error, scan, setScanner, symbl_name_from_id, syntax_error, unrecovered_syntax_error, user_init
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Constructor Details
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Parser
public Parser()Default constructor. -
Parser
public Parser(java_cup.runtime.Scanner s) Constructor which sets the default scanner. -
Parser
public Parser(java_cup.runtime.Scanner s, java_cup.runtime.SymbolFactory sf) Constructor which sets the default scanner.
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Method Details
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production_table
public short[][] production_table()Access to production table.- Specified by:
production_table
in classjava_cup.runtime.lr_parser
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action_table
public short[][] action_table()Access to parse-action table.- Specified by:
action_table
in classjava_cup.runtime.lr_parser
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reduce_table
public short[][] reduce_table()Access toreduce_goto
table.- Specified by:
reduce_table
in classjava_cup.runtime.lr_parser
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do_action
public java_cup.runtime.Symbol do_action(int act_num, java_cup.runtime.lr_parser parser, Stack stack, int top) throws Exception Invoke a user supplied parse action.- Specified by:
do_action
in classjava_cup.runtime.lr_parser
- Throws:
Exception
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start_state
public int start_state()Indicates start state.- Specified by:
start_state
in classjava_cup.runtime.lr_parser
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start_production
public int start_production()Indicates start production.- Specified by:
start_production
in classjava_cup.runtime.lr_parser
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EOF_sym
public int EOF_sym()EOF
Symbol index.- Specified by:
EOF_sym
in classjava_cup.runtime.lr_parser
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error_sym
public int error_sym()error
Symbol index.- Specified by:
error_sym
in classjava_cup.runtime.lr_parser
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setSymbols
Sets the variable - value relation to use.- Parameters:
value
- the variable-value relation
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getSymbols
Returns the current variable - value relation in use.- Returns:
- the variable-value relation
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setAttributeTypes
Sets the attribute - attribute-type relation to use.- Parameters:
value
- the att - att-type relation
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getAttributeTypes
Returns the current attribute - attribute-type relation in use.- Returns:
- the att - att-type relation
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setResult
Sets the result of the evaluation.- Parameters:
value
- the result
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getResult
Returns the result of the evaluation.- Returns:
- the result
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getValue
Returns either a String object for nominal attributes or a Double for numeric ones. For all other attribute types this method throws an Exception. It also returns a Double object in case of a missing value (for all attribute types!).- Parameters:
instance
- the instance to work onindex
- the index of the attribute to return- Returns:
- the converted value
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filter
Filters the input dataset against the provided expression.- Parameters:
expression
- the expression used for filteringinput
- the input data- Returns:
- the filtered data
- Throws:
Exception
- if parsing fails
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main
Runs the parser from commandline. Takes the following arguments:- expression
- input file
- class index (first|last|num), use 0 to ignore
- output file
- Parameters:
args
- the commandline arguments- Throws:
Exception
- if something goes wrong
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