From 18da7c0f1f24cc00f7c2f80c27cb85e4b234e091 Mon Sep 17 00:00:00 2001
From: Luiz Capitulino <lcapitulino@redhat.com>
Date: Fri, 20 Jul 2012 12:02:58 -0300
Subject: [PATCH] qerror: don't delay error message construction

Today, the error message is only constructed when it's used. This commit
changes qerror to construct the error message when the error object is
built (ie. when the error is reported).

This eliminates the need of storing a pointer to qerror_table[], which
will be dropped soon, and also simplifies the code.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
---
 qerror.c | 29 ++++-------------------------
 qerror.h |  2 +-
 2 files changed, 5 insertions(+), 26 deletions(-)

diff --git a/qerror.c b/qerror.c
index d073ed7c5a..a254f88531 100644
--- a/qerror.c
+++ b/qerror.c
@@ -385,22 +385,6 @@ static QDict *error_obj_from_fmt_no_fail(const char *fmt, va_list *va)
     return ret;
 }
 
-static const QErrorStringTable *get_desc_no_fail(const char *fmt)
-{
-    int i;
-
-    // FIXME: inefficient loop
-
-    for (i = 0; qerror_table[i].error_fmt; i++) {
-        if (strcmp(qerror_table[i].error_fmt, fmt) == 0) {
-            return &qerror_table[i];
-        }
-    }
-
-    fprintf(stderr, "error format '%s' not found\n", fmt);
-    abort();
-}
-
 /**
  * qerror_from_info(): Create a new QError from error information
  *
@@ -414,7 +398,7 @@ static QError *qerror_from_info(const char *fmt, va_list *va)
     loc_save(&qerr->loc);
 
     qerr->error = error_obj_from_fmt_no_fail(fmt, va);
-    qerr->entry = get_desc_no_fail(fmt);
+    qerr->err_msg = qerror_format(fmt, qerr->error);
 
     return qerr;
 }
@@ -519,7 +503,7 @@ char *qerror_format(const char *fmt, QDict *error)
  */
 QString *qerror_human(const QError *qerror)
 {
-    return qerror_format_desc(qerror->error, qerror->entry);
+    return qstring_from_str(qerror->err_msg);
 }
 
 /**
@@ -566,19 +550,13 @@ struct Error
 void qerror_report_err(Error *err)
 {
     QError *qerr;
-    int i;
 
     qerr = qerror_new();
     loc_save(&qerr->loc);
     QINCREF(err->obj);
     qerr->error = err->obj;
 
-    for (i = 0; qerror_table[i].error_fmt; i++) {
-        if (strcmp(qerror_table[i].error_fmt, err->fmt) == 0) {
-            qerr->entry = &qerror_table[i];
-            break;
-        }
-    }
+    qerr->err_msg = qerror_format(err->fmt, qerr->error);
 
     if (monitor_cur_is_qmp()) {
         monitor_set_error(cur_mon, qerr);
@@ -619,5 +597,6 @@ static void qerror_destroy_obj(QObject *obj)
     qerr = qobject_to_qerror(obj);
 
     QDECREF(qerr->error);
+    g_free(qerr->err_msg);
     g_free(qerr);
 }
diff --git a/qerror.h b/qerror.h
index aec76b24e1..de8497d1eb 100644
--- a/qerror.h
+++ b/qerror.h
@@ -27,7 +27,7 @@ typedef struct QError {
     QObject_HEAD;
     QDict *error;
     Location loc;
-    const QErrorStringTable *entry;
+    char *err_msg;
 } QError;
 
 QString *qerror_human(const QError *qerror);