header {
    package org.apache.directory.shared.ldap.schema;
}

class LdapSchemaDefinitionsBaseParser extends Parser;

options {
    importVocab=LdapSchemaDefinitionsBaseLexer;
    k=1;
}

keystring : ALPHA ( ALPHA | ( Zero | OneToNine ) | HYPHEN )*;

number : Zero | OneToNine ( Zero | OneToNine  )*;

numericoid : number ( DOT number )+;

descr : keystring;

oid : numericoid | keystring;

noidlen : numericoid ( LCURLY number RCURLY )?;

oids : oid | ( LPAREN ( SPACE )* oid ( SPACE )* ( DOLLAR ( SPACE )* oid ( SPACE ) )* RPAREN );

extensions : ( options { greedy=true; } : ( SPACE )+ xstring ( SPACE )+ qdstrings )*;

xstring : XHYPHEN ( ALPHA | HYPHEN | USCORE )+;

/* qdescrs : qdescr | ( LPAREN ( SPACE )* ( qdescr ( ( SPACE )+ qdescr )* ( SPACE )* )? RPAREN ); */

qdescrs : qdescr | ( LPAREN ( SPACE )* ( qdescr ( qdescr ( SPACE )+ )*  )? RPAREN );

qdescr : SQUOTE descr SQUOTE;

/* qdstrings : qdstring | ( LPAREN ( SPACE )* ( qdstring ( ( SPACE )+ qdstring )* ( SPACE )* )? RPAREN ); */

qdstrings : qdstring | ( LPAREN ( SPACE )* ( qdstring ( qdstring ( SPACE )+ )* )? RPAREN );

qdstring : SQUOTE ( QS | QQ | UTF8 )+ SQUOTE;