use of org.antlr.v4.runtime.atn.ATN in project antlr4 by antlr.
the class BaseNodeTest method checkRuleATN.
void checkRuleATN(Grammar g, String ruleName, String expecting) {
ParserATNFactory f = new ParserATNFactory(g);
ATN atn = f.createATN();
DOTGenerator dot = new DOTGenerator(g);
System.out.println(dot.getDOT(atn.ruleToStartState[g.getRule(ruleName).index]));
Rule r = g.getRule(ruleName);
ATNState startState = atn.ruleToStartState[r.index];
ATNPrinter serializer = new ATNPrinter(g, startState);
String result = serializer.asString();
// System.out.print(result);
assertEquals(expecting, result);
}
use of org.antlr.v4.runtime.atn.ATN in project antlr4 by antlr.
the class TestATNConstruction method checkTokensRule.
void checkTokensRule(LexerGrammar g, String modeName, String expecting) {
// }
if (modeName == null)
modeName = "DEFAULT_MODE";
if (g.modes.get(modeName) == null) {
System.err.println("no such mode " + modeName);
return;
}
ParserATNFactory f = new LexerATNFactory(g);
ATN nfa = f.createATN();
ATNState startState = nfa.modeNameToStartState.get(modeName);
ATNPrinter serializer = new ATNPrinter(g, startState);
String result = serializer.asString();
//System.out.print(result);
assertEquals(expecting, result);
}
use of org.antlr.v4.runtime.atn.ATN in project antlr4 by antlr.
the class BaseJavaTest method checkRuleDFA.
List<ANTLRMessage> checkRuleDFA(String gtext, int decision, String expecting) throws Exception {
ErrorQueue equeue = new ErrorQueue();
Grammar g = new Grammar(gtext, equeue);
ATN atn = createATN(g, false);
DecisionState blk = atn.decisionToState.get(decision);
checkRuleDFA(g, blk, expecting);
return equeue.all;
}
use of org.antlr.v4.runtime.atn.ATN in project antlr4 by antlr.
the class BaseCppTest method checkRuleDFA.
List<ANTLRMessage> checkRuleDFA(String gtext, int decision, String expecting) throws Exception {
ErrorQueue equeue = new ErrorQueue();
Grammar g = new Grammar(gtext, equeue);
ATN atn = createATN(g, false);
DecisionState blk = atn.decisionToState.get(decision);
checkRuleDFA(g, blk, expecting);
return equeue.all;
}
use of org.antlr.v4.runtime.atn.ATN in project antlr4 by antlr.
the class BaseCppTest method getTokenTypes.
public List<String> getTokenTypes(LexerGrammar lg, ATN atn, CharStream input) {
LexerATNSimulator interp = new LexerATNSimulator(atn, new DFA[] { new DFA(atn.modeToStartState.get(Lexer.DEFAULT_MODE)) }, null);
List<String> tokenTypes = new ArrayList<String>();
int ttype;
boolean hitEOF = false;
do {
if (hitEOF) {
tokenTypes.add("EOF");
break;
}
int t = input.LA(1);
ttype = interp.match(input, Lexer.DEFAULT_MODE);
if (ttype == Token.EOF) {
tokenTypes.add("EOF");
} else {
tokenTypes.add(lg.typeToTokenList.get(ttype));
}
if (t == IntStream.EOF) {
hitEOF = true;
}
} while (ttype != Token.EOF);
return tokenTypes;
}
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