/**
* Removes comments from the specified string and returns the first characters of a query.
*
* @param qu query string
* @param max maximum length of string to return
* @return result
*/
public static String removeComments(final String qu, final int max) {
final StringBuilder sb = new StringBuilder();
int m = 0;
boolean s = false;
final int cl = qu.length();
for (int c = 0; c < cl && sb.length() < max; ++c) {
final char ch = qu.charAt(c);
if (ch == 0x0d) continue;
if (ch == '(' && c + 1 < cl && qu.charAt(c + 1) == ':') {
if (m == 0 && !s) {
sb.append(' ');
s = true;
}
++m;
++c;
} else if (m != 0 && ch == ':' && c + 1 < cl && qu.charAt(c + 1) == ')') {
--m;
++c;
} else if (m == 0) {
if (ch > ' ') sb.append(ch);
else if (!s) sb.append(' ');
s = ch <= ' ';
}
}
if (sb.length() >= max) sb.append("...");
return sb.toString().trim();
}
/**
* Returns a string representation of all found arguments.
*
* @param args array with arguments
* @return string representation
*/
static String foundArgs(final Value[] args) {
// compose found arguments
final StringBuilder sb = new StringBuilder();
for (final Value v : args) {
if (sb.length() != 0) sb.append(", ");
sb.append(v instanceof Jav ? Util.className(((Jav) v).toJava()) : v.seqType());
}
return sb.toString();
}
/** Tests the specified instance. */
@Test
public void test() {
final StringBuilder sb = new StringBuilder();
int fail = 0;
for (final Object[] qu : queries) {
final boolean correct = qu.length == 3;
final String query = qu[correct ? 2 : 1].toString();
final Value cmp = correct ? (Value) qu[1] : null;
final QueryProcessor qp = new QueryProcessor(query, context);
try {
final Value val = qp.value();
if (!correct || !new DeepCompare().equal(val, cmp)) {
sb.append("[" + qu[0] + "] " + query);
String s = correct && cmp.size() != 1 ? "#" + cmp.size() : "";
sb.append("\n[E" + s + "] ");
if (correct) {
final String cp = cmp.toString();
sb.append('\'');
sb.append(cp.length() > 1000 ? cp.substring(0, 1000) + "..." : cp);
sb.append('\'');
} else {
sb.append("error");
}
final TokenBuilder types = new TokenBuilder();
for (final Item it : val) types.add(it.type.toString()).add(" ");
s = val.size() == 1 ? "" : "#" + val.size();
sb.append("\n[F" + s + "] '" + val + "', " + types + details() + '\n');
++fail;
}
} catch (final Exception ex) {
final String msg = ex.getMessage();
if (correct || msg == null || msg.contains("mailman")) {
final String cp = correct && cmp.data() != null ? cmp.toString() : "()";
sb.append(
"["
+ qu[0]
+ "] "
+ query
+ "\n[E] "
+ cp
+ "\n[F] "
+ (msg == null ? Util.className(ex) : msg.replaceAll("\r\n?|\n", " "))
+ ' '
+ details()
+ '\n');
ex.printStackTrace();
++fail;
}
} finally {
qp.close();
}
}
if (fail != 0) fail(fail + " Errors. [E] = expected, [F] = found:\n" + sb.toString().trim());
}
@Override
public final String toString() {
final StringBuilder sb = new StringBuilder();
if (root != null) sb.append(root);
for (final Expr s : steps) {
if (sb.length() != 0) sb.append(s instanceof Bang ? " ! " : "/");
sb.append(s);
}
return sb.toString();
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
final int pl = post.length;
for (int p = 0; p < pl; p++) {
sb.append(LET).append(" (: post-group :) ").append(post[p]);
sb.append(' ').append(ASSIGN).append(' ').append(preExpr[p]).append(' ');
}
sb.append(GROUP).append(' ').append(BY);
final int sl = specs.length;
for (int s = 0; s < sl; s++) sb.append(s == 0 ? " " : SEP).append(specs[s]);
return sb.toString();
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
for (final Expr e : preds) sb.append('[').append(e).append(']');
return sb.toString();
}