Class Parser
- java.lang.Object
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- java_cup.runtime.lr_parser
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- weka.filters.unsupervised.instance.subsetbyexpression.Parser
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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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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description short[][]
action_table()
Access to parse-action table.java_cup.runtime.Symbol
do_action(int act_num, java_cup.runtime.lr_parser parser, java.util.Stack stack, int top)
Invoke a user supplied parse action.int
EOF_sym()
EOF
Symbol index.int
error_sym()
error
Symbol index.static Instances
filter(java.lang.String expression, Instances input)
Filters the input dataset against the provided expression.java.util.Hashtable
getAttributeTypes()
Returns the current attribute - attribute-type relation in use.java.lang.Boolean
getResult()
Returns the result of the evaluation.java.util.HashMap
getSymbols()
Returns the current variable - value relation in use.static java.lang.Object
getValue(Instance instance, int index)
Returns either a String object for nominal attributes or a Double for numeric ones.static void
main(java.lang.String[] args)
Runs the parser from commandline.short[][]
production_table()
Access to production table.short[][]
reduce_table()
Access toreduce_goto
table.void
setAttributeTypes(java.util.Hashtable value)
Sets the attribute - attribute-type relation to use.void
setResult(java.lang.Boolean value)
Sets the result of the evaluation.void
setSymbols(java.util.HashMap value)
Sets the variable - value relation to use.int
start_production()
Indicates start production.int
start_state()
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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Method Detail
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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, java.util.Stack stack, int top) throws java.lang.Exception
Invoke a user supplied parse action.- Specified by:
do_action
in classjava_cup.runtime.lr_parser
- Throws:
java.lang.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
public void setSymbols(java.util.HashMap value)
Sets the variable - value relation to use.- Parameters:
value
- the variable-value relation
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getSymbols
public java.util.HashMap getSymbols()
Returns the current variable - value relation in use.- Returns:
- the variable-value relation
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setAttributeTypes
public void setAttributeTypes(java.util.Hashtable value)
Sets the attribute - attribute-type relation to use.- Parameters:
value
- the att - att-type relation
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getAttributeTypes
public java.util.Hashtable getAttributeTypes()
Returns the current attribute - attribute-type relation in use.- Returns:
- the att - att-type relation
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setResult
public void setResult(java.lang.Boolean value)
Sets the result of the evaluation.- Parameters:
value
- the result
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getResult
public java.lang.Boolean getResult()
Returns the result of the evaluation.- Returns:
- the result
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getValue
public static java.lang.Object getValue(Instance instance, int index)
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
public static Instances filter(java.lang.String expression, Instances input) throws java.lang.Exception
Filters the input dataset against the provided expression.- Parameters:
expression
- the expression used for filteringinput
- the input data- Returns:
- the filtered data
- Throws:
java.lang.Exception
- if parsing fails
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main
public static void main(java.lang.String[] args) throws java.lang.Exception
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:
java.lang.Exception
- if something goes wrong
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