From: Bert Vermeulen <redacted>
Date: Tue, 24 Jan 2012 02:51:02 +0000 (+0100)
Subject: sr: better error reporting
X-Git-Tag: libsigrokdecode-0.1.0~102
X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=commitdiff_plain;h=58572aed02d81e2cc75749c2c4b516538b5ca9b9

sr: better error reporting
---

diff --git a/sigrokdecode.h b/sigrokdecode.h
index 0f332b2..dca2f98 100644
--- a/sigrokdecode.h
+++ b/sigrokdecode.h
@@ -67,10 +67,10 @@ enum {
 	SRD_OUTPUT_ANN,
 	SRD_OUTPUT_PROTO,
 	SRD_OUTPUT_BINARY,
-	/* When adding an output type, don't forget to expose it to PDs in:
-	 *     controller.c:PyInit_sigrokdecode()
-	 * and add a check in:
-	 *     module_sigrokdecode.c:Decoder_put()
+	/* When adding an output type, don't forget to...
+	 * 	  - expose it to PDs in controller.c:PyInit_sigrokdecode()
+	 * 	  - add a check in module_sigrokdecode.c:Decoder_put()
+	 *    - add a debug string in type_decoder.c:OUTPUT_TYPES
 	 */
 };
 
diff --git a/type_decoder.c b/type_decoder.c
index 86ccf02..1434cf2 100644
--- a/type_decoder.c
+++ b/type_decoder.c
@@ -22,6 +22,14 @@
 #include "config.h"
 
 
+/* This is only used for nicer srd_dbg() output. */
+char *OUTPUT_TYPES[] = {
+	"OUTPUT_ANN",
+	"OUTPUT_PROTO",
+	"OUTPUT_BINARY",
+};
+
+
 static int convert_pyobj(struct srd_decoder_instance *di, PyObject *obj,
 		int *ann_format, char ***ann)
 {
@@ -87,10 +95,16 @@ static PyObject *Decoder_put(PyObject *self, PyObject *args)
 	int output_id;
 	void (*cb)();
 
-	if (!(di = get_di_by_decobject(self)))
+	if (!(di = get_di_by_decobject(self))) {
+		/* Shouldn't happen. */
+		srd_dbg("srd: put(): self instance not found.");
 		return NULL;
+	}
 
 	if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample, &output_id, &data))
+		/* This throws an exception, but by returning NULL here we let python
+		 * raise it. This results in a much better trace in controller.c
+		 * on the decode() method call. */
 		return NULL;
 
 	if (!(l = g_slist_nth(di->pd_output, output_id))) {
@@ -100,6 +114,9 @@ static PyObject *Decoder_put(PyObject *self, PyObject *args)
 	}
 	pdo = l->data;
 
+	srd_spew("srd: instance %s put %d-%d %s %d", di->instance_id,
+			start_sample, end_sample, OUTPUT_TYPES[output_id], output_id);
+
 	if (!(pdata = g_try_malloc0(sizeof(struct srd_proto_data))))
 		return NULL;
 	pdata->start_sample = start_sample;
@@ -154,13 +171,12 @@ static PyObject *Decoder_add(PyObject *self, PyObject *args)
 	int output_type, pdo_id;
 
 	if (!(di = get_di_by_decobject(self))) {
-		srd_dbg("srd: decoder instance not found");
 		PyErr_SetString(PyExc_Exception, "decoder instance not found");
 		return NULL;
 	}
 
 	if (!PyArg_ParseTuple(args, "is", &output_type, &proto_id)) {
-		catch_exception("");
+		/* Let python raise this exception. */
 		return NULL;
 	}