Package jay.yydebug
Interface yyDebug
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- All Known Implementing Classes:
yyAnim
,yyAnimPanel
,yyDebugAdapter
public interface yyDebug
debugging interface for parsers generated byjay
. For details consult the skeleton files. The interface expects that the scanner can be queried more then once for a value corresponding to a token.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description void
accept(java.lang.Object value)
parse is successful.void
discard(int state, int token, java.lang.String name, java.lang.Object value)
discarding token during error recovery.void
error(java.lang.String message)
syntax error.void
lex(int state, int token, java.lang.String name, java.lang.Object value)
just called the scanner.void
pop(int state)
discarding a state during error recovery.void
push(int state, java.lang.Object value)
just pushed the state/value stack.void
reduce(int from, int to, int rule, java.lang.String text, int len)
rule completed, calling action.void
reject()
error recovery failed, about to throw yyException.void
shift(int from, int to)
moving to a new state following an action.void
shift(int from, int to, int errorFlag)
moving to a new state because of input or error.
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Method Detail
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push
void push(int state, java.lang.Object value)
just pushed the state/value stack.- Parameters:
state
- current state.value
- current value.
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lex
void lex(int state, int token, java.lang.String name, java.lang.Object value)
just called the scanner.- Parameters:
state
- current state.token
- just obtained from scanner.name
- of token in grammar.value
- will be obtained from scanner.
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shift
void shift(int from, int to, int errorFlag)
moving to a new state because of input or error.- Parameters:
from
- current state.to
- next state.errorFlag
- value in next state.
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pop
void pop(int state)
discarding a state during error recovery.- Parameters:
state
- discarded.
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reject
void reject()
error recovery failed, about to throw yyException.
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discard
void discard(int state, int token, java.lang.String name, java.lang.Object value)
discarding token during error recovery.- Parameters:
state
- current state.token
- discarded.name
- of token in grammar.value
- will be obtained from scanner.
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reduce
void reduce(int from, int to, int rule, java.lang.String text, int len)
rule completed, calling action.- Parameters:
from
- current state.to
- state to be uncovered.rule
- number of completed right-hand side.text
- text of rule.len
- number of symbols in rule.
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shift
void shift(int from, int to)
moving to a new state following an action.- Parameters:
from
- current state.to
- next state.
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accept
void accept(java.lang.Object value)
parse is successful.- Parameters:
value
- to be returned by yyparse().
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error
void error(java.lang.String message)
syntax error.
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