void (PsiBuilder builder) { final PsiBuilder.Marker marker = builder.mark(); builder.advanceLexer(); checkMatches(builder, RegExpTT.CHARACTER, RegExpBundle.message("parse.error.character.expected")); checkMatches(builder, RegExpTT.MYSQL_CHAR_EQ_END, RegExpBundle.message("parse.error.unclosed.mysql.character.equivalence.class")); marker.done(RegExpElementTypes.MYSQL_CHAR_EQ_EXPRESSION); }