public class Parser
extends java_cup.runtime.lr_parser
Constructor and Description |
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Parser()
Default constructor.
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Parser(java_cup.runtime.Scanner s)
Constructor which sets the default scanner.
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Parser(java_cup.runtime.Scanner s,
java_cup.runtime.SymbolFactory sf)
Constructor which sets the default scanner.
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Modifier and Type | Method and Description |
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short[][] |
action_table()
Access to parse-action table.
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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.
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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.
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java.util.Hashtable |
getAttributeTypes()
Returns the current attribute - attribute-type relation in use.
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java.lang.Boolean |
getResult()
Returns the result of the evaluation.
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java.util.HashMap |
getSymbols()
Returns the current variable - value relation in use.
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static java.lang.Object |
getValue(Instance instance,
int index)
Returns either a String object for nominal attributes or a Double for numeric
ones.
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static void |
main(java.lang.String[] args)
Runs the parser from commandline.
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short[][] |
production_table()
Access to production table.
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short[][] |
reduce_table()
Access to
reduce_goto table. |
void |
setAttributeTypes(java.util.Hashtable value)
Sets the attribute - attribute-type relation to use.
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void |
setResult(java.lang.Boolean value)
Sets the result of the evaluation.
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void |
setSymbols(java.util.HashMap value)
Sets the variable - value relation to use.
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int |
start_production()
Indicates start production.
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int |
start_state()
Indicates start state.
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public Parser()
public Parser(java_cup.runtime.Scanner s)
public Parser(java_cup.runtime.Scanner s, java_cup.runtime.SymbolFactory sf)
public short[][] production_table()
production_table
in class java_cup.runtime.lr_parser
public short[][] action_table()
action_table
in class java_cup.runtime.lr_parser
public short[][] reduce_table()
reduce_goto
table.reduce_table
in class java_cup.runtime.lr_parser
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
do_action
in class java_cup.runtime.lr_parser
java.lang.Exception
public int start_state()
start_state
in class java_cup.runtime.lr_parser
public int start_production()
start_production
in class java_cup.runtime.lr_parser
public int EOF_sym()
EOF
Symbol index.EOF_sym
in class java_cup.runtime.lr_parser
public int error_sym()
error
Symbol index.error_sym
in class java_cup.runtime.lr_parser
public void setSymbols(java.util.HashMap value)
value
- the variable-value relationpublic java.util.HashMap getSymbols()
public void setAttributeTypes(java.util.Hashtable value)
value
- the att - att-type relationpublic java.util.Hashtable getAttributeTypes()
public void setResult(java.lang.Boolean value)
value
- the resultpublic java.lang.Boolean getResult()
public static java.lang.Object getValue(Instance instance, int index)
instance
- the instance to work onindex
- the index of the attribute to returnpublic static Instances filter(java.lang.String expression, Instances input) throws java.lang.Exception
expression
- the expression used for filteringinput
- the input datajava.lang.Exception
- if parsing failspublic static void main(java.lang.String[] args) throws java.lang.Exception
args
- the commandline argumentsjava.lang.Exception
- if something goes wrong