Package weka.core.mathematicalexpression
Class Parser
- java.lang.Object
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- java_cup.runtime.lr_parser
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- weka.core.mathematicalexpression.Parser
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public class Parser extends java_cup.runtime.lr_parser
CUP v0.11a beta 20060608 generated parser.- Version:
- Sun Jan 11 11:41:39 NZDT 2009
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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.java.lang.Double
getResult()
Returns the result of the evaluation.java.util.HashMap
getSymbols()
Returns the current variable - value relation in use.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
setResult(java.lang.Double 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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setResult
public void setResult(java.lang.Double value)
Sets the result of the evaluation.- Parameters:
value
- the result
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getResult
public java.lang.Double getResult()
Returns the result of the evaluation.- Returns:
- the result
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main
public static void main(java.lang.String[] args) throws java.lang.Exception
Runs the parser from commandline. Either reads lines from System.in or from a provided file (line by line). With-symbols
as first parameter one can provide predefined variable values. E.g.:-symbols "Y=10;X=3" "X+Y"
- Parameters:
args
- the commandline arguments- Throws:
java.lang.Exception
- if something goes wrong
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