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error: Infrastructure to track locations for error reporting

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New struct Location holds a location.  So far, the only location is
LOC_NONE, so this doesn't do anything useful yet.

Passing the current location all over the place would be too
cumbersome.  Hide it away in static cur_loc instead, and provide
accessors.  Print it in error_report().

Store it in QError, and print it in qerror_print().

Store it in QemuOpt, for use by qemu_opts_foreach().  This makes
error_report() do the right thing when it runs within
qemu_opts_foreach().

We may still have to store it in other data structures holding user
input for better error messages.  Left for another day.
This commit is contained in:
Markus Armbruster 2010-02-18 19:46:49 +01:00
parent ab5b027ee6
commit 827b08139c
6 changed files with 138 additions and 3 deletions
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5
qerror.c
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@ -224,6 +224,7 @@ QError *qerror_from_info(const char *file, int linenr, const char *func,
QError *qerr;
qerr = qerror_new();
loc_save(&qerr->loc);
qerr->linenr = linenr;
qerr->file = file;
qerr->func = func;
@ -321,10 +322,12 @@ QString *qerror_human(const QError *qerror)
* it uses error_report() for this, so that the output is routed to the right
* place (ie. stderr or Monitor's device).
*/
void qerror_print(const QError *qerror)
void qerror_print(QError *qerror)
{
QString *qstring = qerror_human(qerror);
loc_push_restore(&qerror->loc);
error_report("%s", qstring_get_str(qstring));
loc_pop(&qerror->loc);
QDECREF(qstring);
}