Meta-CMD-aware instruction pointer.

The main IP from the testing loop gets incremented
ONLY IF the command being processed is NOT a "meta" one.
Meta CMDs have their own internal IP.

src/exchange-lib/testing_api_cmd_batch.c

@@ -0,0 +1,118 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2014-2018 Taler Systems SA
+
+  TALER is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as
+  published by the Free Software Foundation; either version 3, or
+  (at your option) any later version.
+
+  TALER 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 General Public License for more details.
+
+  You should have received a copy of the GNU General Public
+  License along with TALER; see the file COPYING.  If not, see
+  <http://www.gnu.org/licenses/>
+*/
+/**
+ * @file exchange/testing_api_cmd_batch.c
+ * @brief Implement batch-execution of CMDs.
+ * @author Marcello Stanisci
+ */
+#include "platform.h"
+#include "taler_json_lib.h"
+#include <gnunet/gnunet_curl_lib.h>
+#include "exchange_api_handle.h"
+#include "taler_testing_lib.h"
+
+
+/**
+ * State for a "batch" CMD.
+ */
+struct BatchState
+{
+  /* CMDs batch.  */
+  const struct TALER_TESTING_Command *batch;
+
+  /* Internal comand pointer.  */
+  unsigned int batch_ip;
+};
+
+
+/**
+ * Run the command.
+ *
+ * @param cls closure.
+ * @param cmd the command being executed.
+ * @param is the interpreter state.
+ */
+static void
+batch_run (void *cls,
+           const struct TALER_TESTING_Command *cmd,
+           struct TALER_TESTING_Interpreter *is)
+{
+  struct BatchState *bs = cls;
+
+  /* hit end command, leap to next top-level command.  */
+  if (NULL == bs->batch[bs->batch_ip].label)
+    TALER_TESTING_interpreter_next (is);
+
+  bs->batch[bs->batch_ip].run (bs->batch[bs->batch_ip].cls,
+                               &bs->batch[bs->batch_ip],
+                               is);
+  bs->batch_ip++;
+}
+
+
+/**
+ * Cleanup the state from a "reserve status" CMD, and possibly
+ * cancel a pending operation thereof.
+ *
+ * @param cls closure.
+ * @param cmd the command which is being cleaned up.
+ */
+static void
+batch_cleanup (void *cls,
+               const struct TALER_TESTING_Command *cmd)
+{
+  struct BatchState *bs = cls;
+
+  for (unsigned int i=0;
+       NULL != bs->batch[i].label;
+       i++)
+    bs->batch[i].cleanup (bs->batch[i].cls,
+                          &bs->batch[i]);
+}
+
+
+/**
+ * Create a "batch" command.  Such command takes a
+ * end_CMD-terminated array of CMDs and executed them.
+ * Once it hits the end CMD, it passes the control
+ * to the next top-level CMD, regardless of it being
+ * another batch or ordinary CMD.
+ *
+ * @param label the command label.
+ * @param batch array of CMDs to execute.
+ *
+ * @return the command.
+ */
+struct TALER_TESTING_Command
+TALER_TESTING_cmd_batch (const char *label,
+                         struct TALER_TESTING_Command *batch)
+{
+  struct TALER_TESTING_Command cmd;
+  struct BatchState *bs;
+
+  bs = GNUNET_new (struct BatchState);
+  bs->batch = batch;
+
+  cmd.cls = bs;
+  cmd.label = label;
+  cmd.run = &batch_run;
+  cmd.cleanup = &batch_cleanup;
+
+  return cmd;
+}

src/exchange-lib/testing_api_loop.c

@@ -164,12 +164,15 @@ interpreter_run (void *cls);
  * Current command is done, run the next one.
  */
 void
-TALER_TESTING_interpreter_next (struct TALER_TESTING_Interpreter *i)
+TALER_TESTING_interpreter_next (struct TALER_TESTING_Interpreter *is)
 {
-  if (GNUNET_SYSERR == i->result)
+  if (GNUNET_SYSERR == is->result)
     return; /* ignore, we already failed! */
-  i->ip++;
+
-  i->task = GNUNET_SCHEDULER_add_now (&interpreter_run, i);
+  if (GNUNET_NO == is->commands[is->ip].meta)
+    is->ip++;
+
+  is->task = GNUNET_SCHEDULER_add_now (&interpreter_run, is);
 }