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java.lang.Objectorg.antlr.tool.FASerializer
public class FASerializer
An aspect of FA (finite automata) that knows how to dump them to serialized strings.
Field Summary | |
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protected Grammar |
grammar
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protected java.util.Set |
markedStates
To prevent infinite recursion when walking state machines, record which states we've visited. |
protected int |
stateCounter
Each state we walk will get a new state number for serialization purposes. |
protected java.util.Map |
stateNumberTranslator
Rather than add a new instance variable to NFA and DFA just for serializing machines, map old state numbers to new state numbers by a State object -> Integer new state number HashMap. |
Constructor Summary | |
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FASerializer(Grammar grammar)
This aspect is associated with a grammar; used to get token names |
Method Summary | |
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java.lang.String |
serialize(State s)
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java.lang.String |
serialize(State s,
boolean renumber)
Return a string representation of a state machine. |
protected void |
walkFANormalizingStateNumbers(State s)
In stateNumberTranslator, get a map from State to new, normalized state number. |
protected void |
walkSerializingFA(java.util.List lines,
State s)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected java.util.Set markedStates
protected int stateCounter
protected java.util.Map stateNumberTranslator
protected Grammar grammar
Constructor Detail |
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public FASerializer(Grammar grammar)
Method Detail |
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public java.lang.String serialize(State s)
public java.lang.String serialize(State s, boolean renumber)
protected void walkFANormalizingStateNumbers(State s)
protected void walkSerializingFA(java.util.List lines, State s)
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