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

Example 91 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestGrammarParserInterpreter method testOneAlt.

@Test
public void testOneAlt() throws Exception {
    LexerGrammar lg = new LexerGrammar(lexerText);
    Grammar g = new Grammar("parser grammar T;\n" + "s : ID\n" + "  ;\n", lg);
    testInterp(lg, g, "s", "a", "(s:1 a)");
}

Example 92 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestParserInterpreter method testEmptyRuleAfterEOFInChild.

@Test
public void testEmptyRuleAfterEOFInChild() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "A : 'a' ;\n");
    Grammar g = new Grammar("parser grammar T;\n" + "s : x y;\n" + "x : A EOF ;\n" + "y : ;", lg);
    ParseTree t = testInterp(lg, g, "s", "a", "(s (x a <EOF>) y)");
    // s
    assertEquals("0..1", t.getSourceInterval().toString());
    // x
    assertEquals("0..1", t.getChild(0).getSourceInterval().toString());
// unspecified		assertEquals("1..0", t.getChild(1).getSourceInterval().toString()); // y
}

Example 93 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestParserInterpreter method testEmptyInputWithCallsAfter.

@Test
public void testEmptyInputWithCallsAfter() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "A : 'a' ;\n");
    Grammar g = new Grammar("parser grammar T;\n" + "s : x y ;\n" + "x : EOF ;\n" + "y : z ;\n" + "z : ;", lg);
    ParseTree t = testInterp(lg, g, "s", "", "(s (x <EOF>) (y z))");
    // s
    assertEquals("0..0", t.getSourceInterval().toString());
    // x
    assertEquals("0..0", t.getChild(0).getSourceInterval().toString());
// unspecified		assertEquals("0..-1", t.getChild(1).getSourceInterval().toString()); // x
}

Example 94 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestParserInterpreter method testStarAorB.

@Test
public void testStarAorB() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "A : 'a' ;\n" + "B : 'b' ;\n" + "C : 'c' ;\n");
    Grammar g = new Grammar("parser grammar T;\n" + "s : (A{;}|B)* C ;\n", lg);
    testInterp(lg, g, "s", "c", "(s c)");
    testInterp(lg, g, "s", "ac", "(s a c)");
    testInterp(lg, g, "s", "bc", "(s b c)");
    testInterp(lg, g, "s", "abaaabc", "(s a b a a a b c)");
    testInterp(lg, g, "s", "babac", "(s b a b a c)");
}

Example 95 with LexerGrammar

use of org.antlr.v4.tool.LexerGrammar in project antlr4 by tunnelvisionlabs.

the class TestParserInterpreter method testEmptyInput.

@Test
public void testEmptyInput() throws Exception {
    LexerGrammar lg = new LexerGrammar("lexer grammar L;\n" + "A : 'a' ;\n");
    Grammar g = new Grammar("parser grammar T;\n" + "s : x EOF ;\n" + "x : ;\n", lg);
    ParseTree t = testInterp(lg, g, "s", "", "(s x <EOF>)");
    // s
    assertEquals("0..0", t.getSourceInterval().toString());
    // x
    assertEquals("0..-1", t.getChild(0).getSourceInterval().toString());
}