Examples with DecisionInfo org.antlr.v4.runtime.atn.DecisionInfo used on opensource projects

Example 11 with DecisionInfo

use of org.antlr.v4.runtime.atn.DecisionInfo in project antlr4 by antlr.

the class TestParserProfiler method testLL1.

@Test
public void testLL1() throws Exception {
    Grammar g = new Grammar("parser grammar T;\n" + "s : ';'{}\n" + "  | '.'\n" + "  ;\n", lg);
    DecisionInfo[] info = interpAndGetDecisionInfo(lg, g, "s", ";");
    assertEquals(1, info.length);
    String expecting = "{decision=0, contextSensitivities=0, errors=0, ambiguities=0, SLL_lookahead=1, " + "SLL_ATNTransitions=1, SLL_DFATransitions=0, LL_Fallback=0, LL_lookahead=0, LL_ATNTransitions=0}";
    assertEquals(expecting, info[0].toString());
}

Example 12 with DecisionInfo

use of org.antlr.v4.runtime.atn.DecisionInfo in project antlr4 by antlr.

the class TestParserProfiler method test3xLL2.

@Test
public void test3xLL2() throws Exception {
    Grammar g = new Grammar("parser grammar T;\n" + "s : ID ';'{}\n" + "  | ID '.'\n" + "  ;\n", lg);
    // The '.' vs ';' causes another ATN transition
    DecisionInfo[] info = interpAndGetDecisionInfo(lg, g, "s", "xyz;", "abc;", "z.");
    assertEquals(1, info.length);
    String expecting = "{decision=0, contextSensitivities=0, errors=0, ambiguities=0, SLL_lookahead=6, " + "SLL_ATNTransitions=3, SLL_DFATransitions=3, LL_Fallback=0, LL_lookahead=0, LL_ATNTransitions=0}";
    assertEquals(expecting, info[0].toString());
}