qapi: Use returned bool to check for failure, Coccinelle part

The previous commit enables conversion of

    visit_foo(..., &err);
    if (err) {
        ...
    }

to

    if (!visit_foo(..., errp)) {
        ...
    }

for visitor functions that now return true / false on success / error.
Coccinelle script:

    @@
    identifier fun =~ "check_list|input_type_enum|lv_start_struct|lv_type_bool|lv_type_int64|lv_type_str|lv_type_uint64|output_type_enum|parse_type_bool|parse_type_int64|parse_type_null|parse_type_number|parse_type_size|parse_type_str|parse_type_uint64|print_type_bool|print_type_int64|print_type_null|print_type_number|print_type_size|print_type_str|print_type_uint64|qapi_clone_start_alternate|qapi_clone_start_list|qapi_clone_start_struct|qapi_clone_type_bool|qapi_clone_type_int64|qapi_clone_type_null|qapi_clone_type_number|qapi_clone_type_str|qapi_clone_type_uint64|qapi_dealloc_start_list|qapi_dealloc_start_struct|qapi_dealloc_type_anything|qapi_dealloc_type_bool|qapi_dealloc_type_int64|qapi_dealloc_type_null|qapi_dealloc_type_number|qapi_dealloc_type_str|qapi_dealloc_type_uint64|qobject_input_check_list|qobject_input_check_struct|qobject_input_start_alternate|qobject_input_start_list|qobject_input_start_struct|qobject_input_type_any|qobject_input_type_bool|qobject_input_type_bool_keyval|qobject_input_type_int64|qobject_input_type_int64_keyval|qobject_input_type_null|qobject_input_type_number|qobject_input_type_number_keyval|qobject_input_type_size_keyval|qobject_input_type_str|qobject_input_type_str_keyval|qobject_input_type_uint64|qobject_input_type_uint64_keyval|qobject_output_start_list|qobject_output_start_struct|qobject_output_type_any|qobject_output_type_bool|qobject_output_type_int64|qobject_output_type_null|qobject_output_type_number|qobject_output_type_str|qobject_output_type_uint64|start_list|visit_check_list|visit_check_struct|visit_start_alternate|visit_start_list|visit_start_struct|visit_type_.*";
    expression list args;
    typedef Error;
    Error *err;
    @@
    -    fun(args, &err);
    -    if (err)
    +    if (!fun(args, &err))
         {
             ...
         }

A few line breaks tidied up manually.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200707160613.848843-19-armbru@redhat.com>

6 files changed, 14 insertions, 28 deletions

diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index a2f4733eed..343c227c09 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -467,8 +467,7 @@ static void cpu_max_set_sve_max_vq(Object *obj, Visitor *v, const char *name,
     Error *err = NULL;
     uint32_t max_vq;
 
-    visit_type_uint32(v, name, &max_vq, &err);
-    if (err) {
+    if (!visit_type_uint32(v, name, &max_vq, &err)) {
         error_propagate(errp, err);
         return;
     }
@@ -513,8 +512,7 @@ static void cpu_arm_set_sve_vq(Object *obj, Visitor *v, const char *name,
     Error *err = NULL;
     bool value;
 
-    visit_type_bool(v, name, &value, &err);
-    if (err) {
+    if (!visit_type_bool(v, name, &value, &err)) {
         error_propagate(errp, err);
         return;
     }
@@ -550,8 +548,7 @@ static void cpu_arm_set_sve(Object *obj, Visitor *v, const char *name,
     bool value;
     uint64_t t;
 
-    visit_type_bool(v, name, &value, &err);
-    if (err) {
+    if (!visit_type_bool(v, name, &value, &err)) {
         error_propagate(errp, err);
         return;
     }
diff --git a/target/arm/monitor.c b/target/arm/monitor.c
index ea6598c412..98fe11ae69 100644
--- a/target/arm/monitor.c
+++ b/target/arm/monitor.c
@@ -174,8 +174,7 @@ CpuModelExpansionInfo *qmp_query_cpu_model_expansion(CpuModelExpansionType type,
         Error *err = NULL;
 
         visitor = qobject_input_visitor_new(model->props);
-        visit_start_struct(visitor, NULL, NULL, 0, &err);
-        if (err) {
+        if (!visit_start_struct(visitor, NULL, NULL, 0, &err)) {
             visit_free(visitor);
             object_unref(obj);
             error_propagate(errp, err);
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 36cbd3d027..c69d057df3 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -4420,8 +4420,7 @@ static void x86_cpuid_version_set_family(Object *obj, Visitor *v,
     Error *local_err = NULL;
     int64_t value;
 
-    visit_type_int(v, name, &value, &local_err);
-    if (local_err) {
+    if (!visit_type_int(v, name, &value, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
@@ -4463,8 +4462,7 @@ static void x86_cpuid_version_set_model(Object *obj, Visitor *v,
     Error *local_err = NULL;
     int64_t value;
 
-    visit_type_int(v, name, &value, &local_err);
-    if (local_err) {
+    if (!visit_type_int(v, name, &value, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
@@ -4501,8 +4499,7 @@ static void x86_cpuid_version_set_stepping(Object *obj, Visitor *v,
     Error *local_err = NULL;
     int64_t value;
 
-    visit_type_int(v, name, &value, &local_err);
-    if (local_err) {
+    if (!visit_type_int(v, name, &value, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
@@ -4606,8 +4603,7 @@ static void x86_cpuid_set_tsc_freq(Object *obj, Visitor *v, const char *name,
     Error *local_err = NULL;
     int64_t value;
 
-    visit_type_int(v, name, &value, &local_err);
-    if (local_err) {
+    if (!visit_type_int(v, name, &value, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
@@ -6816,8 +6812,7 @@ static void x86_cpu_set_bit_prop(Object *obj, Visitor *v, const char *name,
         return;
     }
 
-    visit_type_bool(v, name, &value, &local_err);
-    if (local_err) {
+    if (!visit_type_bool(v, name, &value, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
diff --git a/target/ppc/compat.c b/target/ppc/compat.c
index fda0dfe8f8..42f87a4bfe 100644
--- a/target/ppc/compat.c
+++ b/target/ppc/compat.c
@@ -264,8 +264,7 @@ static void ppc_compat_prop_set(Object *obj, Visitor *v, const char *name,
     char *value;
     uint32_t compat_pvr;
 
-    visit_type_str(v, name, &value, &local_err);
-    if (local_err) {
+    if (!visit_type_str(v, name, &value, &local_err)) {
         error_propagate(errp, local_err);
         return;
     }
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index 2fa609bffe..65c26c4c86 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -510,8 +510,7 @@ static void cpu_model_from_info(S390CPUModel *model, const CpuModelInfo *info,
 
     if (qdict) {
         visitor = qobject_input_visitor_new(info->props);
-        visit_start_struct(visitor, NULL, NULL, 0, &err);
-        if (err) {
+        if (!visit_start_struct(visitor, NULL, NULL, 0, &err)) {
             error_propagate(errp, err);
             visit_free(visitor);
             object_unref(obj);
@@ -1017,8 +1016,7 @@ static void set_feature(Object *obj, Visitor *v, const char *name,
         return;
     }
 
-    visit_type_bool(v, name, &value, &err);
-    if (err) {
+    if (!visit_type_bool(v, name, &value, &err)) {
         error_propagate(errp, err);
         return;
     }
@@ -1076,8 +1074,7 @@ static void set_feature_group(Object *obj, Visitor *v, const char *name,
         return;
     }
 
-    visit_type_bool(v, name, &value, &err);
-    if (err) {
+    if (!visit_type_bool(v, name, &value, &err)) {
         error_propagate(errp, err);
         return;
     }
diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c
index 3f05aba9d6..4a9257005d 100644
--- a/target/sparc/cpu.c
+++ b/target/sparc/cpu.c
@@ -804,8 +804,7 @@ static void sparc_set_nwindows(Object *obj, Visitor *v, const char *name,
     Error *err = NULL;
     int64_t value;
 
-    visit_type_int(v, name, &value, &err);
-    if (err) {
+    if (!visit_type_int(v, name, &value, &err)) {
         error_propagate(errp, err);
         return;
     }