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gnosygnu_xowa/100_core/src/gplx/Exc.java

71 lines
2.8 KiB

/*
XOWA: the XOWA Offline Wiki Application
Copyright (C) 2012 gnosygnu@gmail.com
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gplx;
public class Exc extends RuntimeException {
private final String stack;
private Exc_msg[] msgs_ary = new Exc_msg[8]; private int msgs_len = 8, msgs_idx = 0;
public Exc(String stack, String type, String msg, Object... args) {
Msgs_add(type, msg, args);
this.stack = stack;
}
public int Stack_erase() {return stack_erase;} public Exc Stack_erase_1_() {stack_erase = 1; return this;} private int stack_erase = 0;
public Exc Args_add(Object... args) {msgs_ary[msgs_idx - 1].Args_add(args); return this;} // i - 1 to get current
@gplx.Internal protected boolean Type_match(String type) {
for (int i = 0; i < msgs_len; ++i) {
if (String_.Eq(type, msgs_ary[i].Type())) return true;
}
return false;
}
@gplx.Internal protected void Msgs_add(String type, String msg, Object[] args) {
if (msgs_idx == msgs_len) {
int new_len = msgs_len * 2;
Exc_msg[] new_ary = new Exc_msg[new_len];
Array_.CopyTo(msgs_ary, new_ary, 0);
this.msgs_ary = new_ary;
this.msgs_len = new_len;
}
msgs_ary[msgs_idx] = new Exc_msg(type, msg, args);
++msgs_idx;
}
public String To_str_all() {
String rv = "";
for (int i = msgs_idx - 1; i > -1; --i) {
rv += "[err " + Int_.Xto_str(i) + "] " + msgs_ary[i].To_str() + "\n";
}
rv += "[stack]\n " + Stack_to_str(this, stack);
return rv;
}
@Override public String getMessage() {return To_str_all();}
private static String Stack_to_str(Exception e, String stack) {
String rv = stack;
if (rv == Exc_.Stack_null) { // occurs for thrown gplx exceptions; EX: throw Exc_.new_unimplemented
rv = ""; // set to "" b/c String concat below;
String[] lines = String_.Split_lang(Exc_.Stack_lang(e), '\n');
int len = lines.length;
for (int i = 0; i < len; ++i) {
String line = lines[i];
if (String_.Has_at_bgn(line, "gplx.Exc_.new")) continue; // ignore stack frames with "gplx.Exc_.new"; EX: throw Exc_.new_unimplemented
if (String_.Len(rv) > 0) rv += "\n";
rv += line;
}
}
rv = String_.Replace(rv, "\n", "\n "); // " " is to indent stack stack
return rv;
}
}