Examples with Grammar org.antlr.v4.tool.Grammar used on opensource projects

Example 96 with Grammar

use of org.antlr.v4.tool.Grammar in project antlr4 by antlr.

the class TestATNConstruction method testParserRuleRefInLexerRule.

@Test
public void testParserRuleRefInLexerRule() throws Exception {
    boolean threwException = false;
    ErrorQueue errorQueue = new ErrorQueue();
    try {
        String gstr = "grammar U;\n" + "a : A;\n" + "A : a;\n";
        Tool tool = new Tool();
        tool.removeListeners();
        tool.addListener(errorQueue);
        assertEquals(0, errorQueue.size());
        GrammarRootAST grammarRootAST = tool.parseGrammarFromString(gstr);
        assertEquals(0, errorQueue.size());
        Grammar g = tool.createGrammar(grammarRootAST);
        assertEquals(0, errorQueue.size());
        g.fileName = "<string>";
        tool.process(g, false);
    } catch (Exception e) {
        threwException = true;
        e.printStackTrace();
    }
    System.out.println(errorQueue);
    assertEquals(1, errorQueue.errors.size());
    assertEquals(ErrorType.PARSER_RULE_REF_IN_LEXER_RULE, errorQueue.errors.get(0).getErrorType());
    assertEquals("[a, A]", Arrays.toString(errorQueue.errors.get(0).getArgs()));
    assertTrue(!threwException);
}

Example 97 with Grammar

use of org.antlr.v4.tool.Grammar in project antlr4 by antlr.

the class TestATNConstruction method testAplus.

@Test
public void testAplus() throws Exception {
    Grammar g = new Grammar("parser grammar P;\n" + "a : A+;");
    String expecting = "RuleStart_a_0->PlusBlockStart_3\n" + "PlusBlockStart_3->s2\n" + "s2-A->BlockEnd_4\n" + "BlockEnd_4->PlusLoopBack_5\n" + "PlusLoopBack_5->PlusBlockStart_3\n" + "PlusLoopBack_5->s6\n" + "s6->RuleStop_a_1\n" + "RuleStop_a_1-EOF->s7\n";
    checkRuleATN(g, "a", expecting);
}

Example 98 with Grammar

use of org.antlr.v4.tool.Grammar in project antlr4 by antlr.

the class TestATNSerialization method testLexerUnicodeEscapedSMPNotSetWithRange.

@Test
public void testLexerUnicodeEscapedSMPNotSetWithRange() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "ID : ~('\\u{1F4A9}'|'\\u{1F4AA}'|'\\u{1F441}'|'\\u{1D40F}'..'\\u{1D413}')\n ;");
    String expecting = "max type 1\n" + "0:TOKEN_START -1\n" + "1:RULE_START 0\n" + "2:RULE_STOP 0\n" + "3:BASIC 0\n" + "4:BASIC 0\n" + "rule 0:1 1\n" + "mode 0:0\n" + "0:119823..119827, 128065..128065, 128169..128170\n" + "0->1 EPSILON 0,0,0\n" + "1->3 EPSILON 0,0,0\n" + "3->4 NOT_SET 0,0,0\n" + "4->2 EPSILON 0,0,0\n" + "0:0\n";
    ATN atn = createATN(lg, true);
    String result = ATNSerializer.getDecoded(atn, Arrays.asList(lg.getTokenNames()));
    assertEquals(expecting, result);
}

Example 99 with Grammar

use of org.antlr.v4.tool.Grammar in project antlr4 by antlr.

the class TestATNSerialization method testLexerUnicodeEscapedBMPNotSet.

@Test
public void testLexerUnicodeEscapedBMPNotSet() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "ID : ~('\\u4E9C'|'\\u4E9D')\n ;");
    String expecting = "max type 1\n" + "0:TOKEN_START -1\n" + "1:RULE_START 0\n" + "2:RULE_STOP 0\n" + "3:BASIC 0\n" + "4:BASIC 0\n" + "rule 0:1 1\n" + "mode 0:0\n" + "0:'\\u4E9C'..'\\u4E9D'\n" + "0->1 EPSILON 0,0,0\n" + "1->3 EPSILON 0,0,0\n" + "3->4 NOT_SET 0,0,0\n" + "4->2 EPSILON 0,0,0\n" + "0:0\n";
    ATN atn = createATN(lg, true);
    String result = ATNSerializer.getDecoded(atn, Arrays.asList(lg.getTokenNames()));
    assertEquals(expecting, result);
}

Example 100 with Grammar

use of org.antlr.v4.tool.Grammar in project antlr4 by antlr.

the class TestATNSerialization method testLexerTwoRules.

@Test
public void testLexerTwoRules() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "A : 'a' ;\n" + "B : 'b' ;\n");
    String expecting = "max type 2\n" + "0:TOKEN_START -1\n" + "1:RULE_START 0\n" + "2:RULE_STOP 0\n" + "3:RULE_START 1\n" + "4:RULE_STOP 1\n" + "5:BASIC 0\n" + "6:BASIC 0\n" + "7:BASIC 1\n" + "8:BASIC 1\n" + "rule 0:1 1\n" + "rule 1:3 2\n" + "mode 0:0\n" + "0->1 EPSILON 0,0,0\n" + "0->3 EPSILON 0,0,0\n" + "1->5 EPSILON 0,0,0\n" + "3->7 EPSILON 0,0,0\n" + "5->6 ATOM 97,0,0\n" + "6->2 EPSILON 0,0,0\n" + "7->8 ATOM 98,0,0\n" + "8->4 EPSILON 0,0,0\n" + "0:0\n";
    ATN atn = createATN(lg, true);
    String result = ATNSerializer.getDecoded(atn, Arrays.asList(lg.getTokenNames()));
    assertEquals(expecting, result);
}