private CommonTree parse(String filename) {
try {
final String sql = this.read(filename);
final SqlLexer lexer = new SqlLexer(new ANTLRStringStream(sql));
final CommonTokenStream tokenStream = new CommonTokenStream(lexer);
final SqlParser parser = new SqlParser(tokenStream);
final CommonTree tree = (CommonTree) parser.statements().getTree();
final List<String> errors = parser.getErrors();
if (errors.size() > 0) {
final String errorMsg = Joiner.on("\n\t").skipNulls().join(errors);
SqlTest.LOG.error(
"Cannot parse query: {0}", //
SqlTest.LOG.boxed(
filename, //
new Object[] {
"\n\t" + errorMsg,
"\n\n" + (tree != null ? CommonTreePrinter.toString(tree) : "") + "\n"
}));
throw new RuntimeException("Cannot parse the query:\n" + errorMsg.trim() + ".");
}
return tree;
} catch (final RuntimeException e) {
throw e;
} catch (final Exception e) {
throw new RuntimeException("Cannot parse input", e);
}
}
/** @since 2.0.0 */
@Test
public void testSql() {
SqlTest.LOG.debug("\n" + CommonTreePrinter.toString(this.parse("1.sql")) + "\n");
SqlTest.LOG.debug("\n" + CommonTreePrinter.toString(this.parse("2.sql")) + "\n");
}
/** @since 2.0.0 */
@Test
@Ignore
public void testSqlLarge() {
SqlTest.LOG.debug("\n" + CommonTreePrinter.toString(this.parse("3.sql")) + "\n");
}
