| fri.patterns.interpreter.parsergenerator.ParserTables
All known Subclasses: fri.patterns.interpreter.parsergenerator.parsertables.AbstractParserTables,
| ParserTables | | public interface ParserTables (Code) | | Responsibilities of (bottom-up) parser tables, that must provide:
- all terminals, without EPSILON (for the Lexer)
- the syntax
- the follow-state from the GOTO-table
- the follow action from the PARSE-ACTION-table
- a list of expected terminals
author:
(c) 2000, Fritz Ritzberger |
| Field Summary | |
| final public static Integer | ACCEPT
Special symbol occuring in a parser table, 0, means: syntax was correct when coming to that cell. | | final public static Integer | ERROR
Special symbol occuring in a parser table, -1, means: error when coming to that cell. | | final public static Integer | SHIFT
Special symbol occuring in a parser table, -2, means: read next token. |
| Method Summary | |
| public void | dump(PrintStream out)
Dumps rules, GOTO-table, PARSE-ACTION-table, FIRST and FOLLOW sets, ... | | public Map | getExpected(Integer state)
The keySet of returned Map contains all expected terminals for the current state. | | public Integer | getGotoState(Integer currentState, String symbol)
Returns the next state from the GOTO-table, for a given state and a received terminal or nonterminal. | | public Integer | getParseAction(Integer currentState, String terminal)
Returns the action from the PARSE-ACTION-table, for a given state and received terminal. | | public Syntax | getSyntax()
Returns the input syntax. | | public List | getTerminals()
Returns the List of treminals, without EPSILON. |
| ACCEPT | | final public static Integer ACCEPT(Code) | | Special symbol occuring in a parser table, 0, means: syntax was correct when coming to that cell.
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| ERROR | | final public static Integer ERROR(Code) | | Special symbol occuring in a parser table, -1, means: error when coming to that cell.
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| SHIFT | | final public static Integer SHIFT(Code) | | Special symbol occuring in a parser table, -2, means: read next token.
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| dump | | public void dump(PrintStream out)(Code) | | Dumps rules, GOTO-table, PARSE-ACTION-table, FIRST and FOLLOW sets, ...
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| getExpected | | public Map getExpected(Integer state)(Code) | | The keySet of returned Map contains all expected terminals for the current state.
These can be used as Lexer hints.
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| getGotoState | | public Integer getGotoState(Integer currentState, String symbol)(Code) | | Returns the next state from the GOTO-table, for a given state and a received terminal or nonterminal.
Parameters:
currentState - the current parser state
Parameters:
symbol - recently received terminal or nonterminal new parser state |
| getParseAction | | public Integer getParseAction(Integer currentState, String terminal)(Code) | | Returns the action from the PARSE-ACTION-table, for a given state and received terminal.
fuer einen gegebenen Zustand und ein Terminal.
Parameters:
currentState - the current parser state
Parameters:
terminal - recently received terminal new action to proceed, SHIFT, ACCEPT, ERROR, or anything above zero, meaning REDUCE. |
| getSyntax | | public Syntax getSyntax()(Code) | | Returns the input syntax.
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| getTerminals | | public List getTerminals()(Code) | | Returns the List of treminals, without EPSILON.
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