diff --git a/runtime-testsuite/test/org/antlr/v4/test/runtime/java/api/TestExpectedTokens.java b/runtime-testsuite/test/org/antlr/v4/test/runtime/java/api/TestExpectedTokens.java index 7b541fee4..1499db02e 100644 --- a/runtime-testsuite/test/org/antlr/v4/test/runtime/java/api/TestExpectedTokens.java +++ b/runtime-testsuite/test/org/antlr/v4/test/runtime/java/api/TestExpectedTokens.java @@ -5,7 +5,6 @@ import org.antlr.v4.runtime.RuleContext; import org.antlr.v4.runtime.atn.ATN; import org.antlr.v4.runtime.misc.IntervalSet; import org.antlr.v4.test.runtime.java.BaseJavaTest; -import org.antlr.v4.tool.DOTGenerator; import org.antlr.v4.tool.Grammar; import org.junit.Test; @@ -97,41 +96,48 @@ public class TestExpectedTokens extends BaseJavaTest { @Test public void testFollowIncludedInLeftRecursiveRule() throws Exception { String gtext = "grammar T;\n" + + "s : expr EOF ;\n" + "expr : L expr R\n"+ " | expr PLUS expr\n"+ " | ID\n"+ " ;\n"; Grammar g = new Grammar(gtext); String atnText = - "RuleStart_expr_0->BlockStart_8\n"+ - "BlockStart_8->s2\n"+ - "BlockStart_8->s7\n"+ - "s2-action_0:-1->s3\n"+ - "s7-ID->BlockEnd_9\n"+ - "s3-L->s4\n"+ - "BlockEnd_9->StarLoopEntry_15\n"+ - "s4-expr->RuleStart_expr_0\n"+ - "StarLoopEntry_15->StarBlockStart_13\n"+ - "StarLoopEntry_15->s16\n"+ - "s5-R->s6\n"+ - "StarBlockStart_13->s10\n"+ - "s16->RuleStop_expr_1\n"+ - "s6->BlockEnd_9\n"+ - "s10-2 >= _p->s11\n"+ - "RuleStop_expr_1->s5\n"+ - "RuleStop_expr_1->BlockEnd_14\n"+ - "s11-PLUS->s12\n"+ - "s12-expr->RuleStart_expr_0\n"+ - "BlockEnd_14->StarLoopBack_17\n"+ - "StarLoopBack_17->StarLoopEntry_15\n"; + "RuleStart_expr_2->BlockStart_13\n"+ + "BlockStart_13->s7\n"+ + "BlockStart_13->s12\n"+ + "s7-action_1:-1->s8\n"+ + "s12-ID->BlockEnd_14\n"+ + "s8-L->s9\n"+ + "BlockEnd_14->StarLoopEntry_20\n"+ + "s9-expr->RuleStart_expr_2\n"+ + "StarLoopEntry_20->StarBlockStart_18\n"+ + "StarLoopEntry_20->s21\n"+ + "s10-R->s11\n"+ + "StarBlockStart_18->s15\n"+ + "s21->RuleStop_expr_3\n"+ + "s11->BlockEnd_14\n"+ + "s15-2 >= _p->s16\n"+ + "RuleStop_expr_3->s5\n"+ + "RuleStop_expr_3->s10\n"+ + "RuleStop_expr_3->BlockEnd_19\n"+ + "s16-PLUS->s17\n"+ + "s17-expr->RuleStart_expr_2\n"+ + "BlockEnd_19->StarLoopBack_22\n"+ + "StarLoopBack_22->StarLoopEntry_20\n"; checkRuleATN(g, "expr", atnText); ATN atn = g.getATN(); - DOTGenerator gen = new DOTGenerator(g); - String dot = gen.getDOT(atn.states.get(0), g.getRuleNames(), false); - System.out.println(dot); - int blkStartStateNumber = 9; - IntervalSet tokens = atn.getExpectedTokens(blkStartStateNumber, null); - assertEquals("{, PLUS}", tokens.toString(g.getTokenNames())); + +// DOTGenerator gen = new DOTGenerator(g); +// String dot = gen.getDOT(atn.states.get(2), g.getRuleNames(), false); +// System.out.println(dot); + + // Simulate call stack after input '(x' + ParserRuleContext callStackFrom_s = new ParserRuleContext(null, 4); + ParserRuleContext callStackFrom_expr = new ParserRuleContext(callStackFrom_s, 9); + int afterID = 14; + IntervalSet tokens = atn.getExpectedTokens(afterID, callStackFrom_expr); + assertEquals("{R, PLUS}", tokens.toString(g.getTokenNames())); } }