本文整理汇总了C#中Antlr4.Runtime.Atn.ATN.DefineDecisionState方法的典型用法代码示例。如果您正苦于以下问题：C# ATN.DefineDecisionState方法的具体用法？C# ATN.DefineDecisionState怎么用？C# ATN.DefineDecisionState使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Antlr4.Runtime.Atn.ATN的用法示例。
在下文中一共展示了ATN.DefineDecisionState方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GenerateRuleBypassTransitions
protected internal virtual void GenerateRuleBypassTransitions(ATN atn)
{
atn.ruleToTokenType = new int[atn.ruleToStartState.Length];
for (int i_10 = 0; i_10 < atn.ruleToStartState.Length; i_10++)
{
atn.ruleToTokenType[i_10] = atn.maxTokenType + i_10 + 1;
}
for (int i_13 = 0; i_13 < atn.ruleToStartState.Length; i_13++)
{
BasicBlockStartState bypassStart = new BasicBlockStartState();
bypassStart.ruleIndex = i_13;
atn.AddState(bypassStart);
BlockEndState bypassStop = new BlockEndState();
bypassStop.ruleIndex = i_13;
atn.AddState(bypassStop);
bypassStart.endState = bypassStop;
atn.DefineDecisionState(bypassStart);
bypassStop.startState = bypassStart;
ATNState endState;
Transition excludeTransition = null;
if (atn.ruleToStartState[i_13].isPrecedenceRule)
{
// wrap from the beginning of the rule to the StarLoopEntryState
endState = null;
foreach (ATNState state_3 in atn.states)
{
if (state_3.ruleIndex != i_13)
{
continue;
}
if (!(state_3 is StarLoopEntryState))
{
continue;
}
ATNState maybeLoopEndState = state_3.Transition(state_3.NumberOfTransitions - 1).target;
if (!(maybeLoopEndState is LoopEndState))
{
continue;
}
if (maybeLoopEndState.epsilonOnlyTransitions && maybeLoopEndState.Transition(0).target is RuleStopState)
{
endState = state_3;
break;
}
}
if (endState == null)
{
throw new NotSupportedException("Couldn't identify final state of the precedence rule prefix section.");
}
excludeTransition = ((StarLoopEntryState)endState).loopBackState.Transition(0);
}
else
{
endState = atn.ruleToStopState[i_13];
}
// all non-excluded transitions that currently target end state need to target blockEnd instead
foreach (ATNState state_4 in atn.states)
{
foreach (Transition transition in state_4.transitions)
{
if (transition == excludeTransition)
{
continue;
}
if (transition.target == endState)
{
transition.target = bypassStop;
}
}
}
// all transitions leaving the rule start state need to leave blockStart instead
while (atn.ruleToStartState[i_13].NumberOfTransitions > 0)
{
Transition transition = atn.ruleToStartState[i_13].Transition(atn.ruleToStartState[i_13].NumberOfTransitions - 1);
atn.ruleToStartState[i_13].RemoveTransition(atn.ruleToStartState[i_13].NumberOfTransitions - 1);
bypassStart.AddTransition(transition);
}
// link the new states
atn.ruleToStartState[i_13].AddTransition(new EpsilonTransition(bypassStart));
bypassStop.AddTransition(new EpsilonTransition(endState));
ATNState matchState = new BasicState();
atn.AddState(matchState);
matchState.AddTransition(new AtomTransition(bypassStop, atn.ruleToTokenType[i_13]));
bypassStart.AddTransition(new EpsilonTransition(matchState));
}
if (deserializationOptions.VerifyAtn)
{
// reverify after modification
VerifyATN(atn);
}
}示例2: Deserialize
//.........这里部分代码省略.........
state_3.SetTransition(i_10, new ActionTransition(transition.target, ruleIndex, legacyLexerActions.Count, false));
legacyLexerActions.Add(lexerAction);
}
}
atn.lexerActions = legacyLexerActions.ToArray();
}
}
MarkPrecedenceDecisions(atn);
atn.decisionToDFA = new DFA[ndecisions];
for (int i_12 = 0; i_12 < ndecisions; i_12++)
{
atn.decisionToDFA[i_12] = new DFA(atn.decisionToState[i_12], i_12);
}
if (deserializationOptions.VerifyAtn)
{
VerifyATN(atn);
}
if (deserializationOptions.GenerateRuleBypassTransitions && atn.grammarType == ATNType.Parser)
{
atn.ruleToTokenType = new int[atn.ruleToStartState.Length];
for (int i_10 = 0; i_10 < atn.ruleToStartState.Length; i_10++)
{
atn.ruleToTokenType[i_10] = atn.maxTokenType + i_10 + 1;
}
for (int i_13 = 0; i_13 < atn.ruleToStartState.Length; i_13++)
{
BasicBlockStartState bypassStart = new BasicBlockStartState();
bypassStart.ruleIndex = i_13;
atn.AddState(bypassStart);
BlockEndState bypassStop = new BlockEndState();
bypassStop.ruleIndex = i_13;
atn.AddState(bypassStop);
bypassStart.endState = bypassStop;
atn.DefineDecisionState(bypassStart);
bypassStop.startState = bypassStart;
ATNState endState;
Transition excludeTransition = null;
if (atn.ruleToStartState[i_13].isPrecedenceRule)
{
// wrap from the beginning of the rule to the StarLoopEntryState
endState = null;
foreach (ATNState state_3 in atn.states)
{
if (state_3.ruleIndex != i_13)
{
continue;
}
if (!(state_3 is StarLoopEntryState))
{
continue;
}
ATNState maybeLoopEndState = state_3.Transition(state_3.NumberOfTransitions - 1).target;
if (!(maybeLoopEndState is LoopEndState))
{
continue;
}
if (maybeLoopEndState.epsilonOnlyTransitions && maybeLoopEndState.Transition(0).target is RuleStopState)
{
endState = state_3;
break;
}
}
if (endState == null)
{
throw new NotSupportedException("Couldn't identify final state of the precedence rule prefix section.");
}