options {
                buildAST = true;
            }

            expr:   mexpr (PLUS^ mexpr)* SEMI!
                ;

            mexpr
                :   atom (STAR^ atom)*
                ;

            atom:   INT
                ;"""

        file("grammar-builder/src/main/antlr/AnotherGrammar.g") << """
            header {
                package org.acme;
            }

        options {
            buildAST = true;
        }

        expr:   mexpr (PLUS^ mexpr)* SEMI!
            ;

        mexpr
            :   atom (STAR^ atom)*
            ;

        atom:   INT
            ;"""
        expect:
        "org.acme" == new MetadataExtracter().getPackageName(new StringReader(grammar))
    }

		dec.UseNumber()
		val, err := decodeJSONValue(dec)
		if err == nil && val.atom == json.Delim('{') {
			// Rewrite the Package field.
			found := false
			for i := 0; i < len(val.seq); i += 2 {
				if val.seq[i].atom == "Package" {
					if pkg, ok := val.seq[i+1].atom.(string); ok {
						val.seq[i+1].atom = pkg + ":" + f.variant
						found = true
						break
					}
				}
			}
			if found {

		return "", errors.New("mail: invalid string")
	}
	atom, p.s = p.s[:i], p.s[i:]
	if !permissive {
		if strings.HasPrefix(atom, ".") {
			return "", errors.New("mail: leading dot in atom")
		}
		if strings.Contains(atom, "..") {
			return "", errors.New("mail: double dot in atom")
		}
		if strings.HasSuffix(atom, ".") {
			return "", errors.New("mail: trailing dot in atom")
		}
	}
	return atom, nil
}

        options {
            buildAST = true;
        }

        expr:   mexpr (PLUS^ mexpr)* SEMI!
        ;

        mexpr
        :   atom (STAR^ atom)*
        ;

        atom:   INT
        ;"""
        projectDir.file("build.gradle") << """
            apply plugin: "antlr"

            ${mavenCentralRepository()}
        """
    }

    @Override

        options {
            buildAST = true;
        }

        expr:   mexpr (PLUS^ mexpr)* SEMI!
        ;

        mexpr
        :   atom (STAR^ atom)*
        ;

        atom:   INT
        ;"""

        when:
        succeeds("generateGrammarSource")

        then:
        file("build/generated-src/antlr/main/TestGrammar.java").exists()

    assertEquals("text", MediaType.parse("text/plain").type());
    assertEquals("application", MediaType.parse("application/atom+xml; charset=utf-8").type());
  }

  public void testGetSubtype() {
    assertEquals("plain", MediaType.parse("text/plain").subtype());
    assertEquals("atom+xml", MediaType.parse("application/atom+xml; charset=utf-8").subtype());
  }

  private static final ImmutableListMultimap<String, String> PARAMETERS =

    assertEquals("text", MediaType.parse("text/plain").type());
    assertEquals("application", MediaType.parse("application/atom+xml; charset=utf-8").type());
  }

  public void testGetSubtype() {
    assertEquals("plain", MediaType.parse("text/plain").subtype());
    assertEquals("atom+xml", MediaType.parse("application/atom+xml; charset=utf-8").subtype());
  }

  private static final ImmutableListMultimap<String, String> PARAMETERS =

			panic(&SyntaxError{Offset: p.pos, Err: "double negation not allowed"})
		}
		return not(p.atom())
	}
	return p.atom()
}

// atom parses a tag or a parenthesized expression.
// On entry, the next input token HAS been lexed.
// On exit, the next input token has been lexed and is in p.tok.
func (p *exprParser) atom() Expr {
	// first token already in p.tok
	if p.tok == "(" {
		pos := p.pos
		defer func() {

      parse("text/plain;boundary=foo;charset=utf-8").hashCode(),
    )
  }

  @Test fun testValidParse() {
    assertMediaType("text/plain")
    assertMediaType("application/atom+xml; charset=utf-8")
    assertMediaType("application/atom+xml; a=1; a=2; b=3")
    assertMediaType("image/gif; foo=bar")
    assertMediaType("text/plain; a=1")
    assertMediaType("text/plain; a=1; a=2; b=3")