[Qemu-devel] [PATCH 03/17] qapi: add visitor interfaces for arrays

[Michael Roth <mdroth@linux.vnet.ibm.com>]

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 qapi/qapi-visit-core.c |   25 +++++++++++++++++++++++++
 qapi/qapi-visit-core.h |    8 ++++++++
 scripts/qapi-visit.py  |   26 ++++++++++++++++++++++++++
 3 files changed, 59 insertions(+), 0 deletions(-)

diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index 9a29674..482bab6 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -306,3 +306,28 @@ void input_type_enum(Visitor *v, int *obj, const char *strings[],
     g_free(enum_str);
     *obj = value;
 }
+
+void visit_start_array(Visitor *v, void **obj, const char *name,
+                       size_t elem_count, size_t elem_size, Error **errp)
+{
+    g_assert(v->start_array);
+    if (!error_is_set(errp)) {
+        v->start_array(v, obj, name, elem_count, elem_size, errp);
+    }
+}
+
+void visit_next_array(Visitor *v, Error **errp)
+{
+    g_assert(v->next_array);
+    if (!error_is_set(errp)) {
+        v->next_array(v, errp);
+    }
+}
+
+void visit_end_array(Visitor *v, Error **errp)
+{
+    g_assert(v->end_array);
+    if (!error_is_set(errp)) {
+        v->end_array(v, errp);
+    }
+}
diff --git a/qapi/qapi-visit-core.h b/qapi/qapi-visit-core.h
index a19d70c..19de382 100644
--- a/qapi/qapi-visit-core.h
+++ b/qapi/qapi-visit-core.h
@@ -43,6 +43,10 @@ struct Visitor
     void (*type_str)(Visitor *v, char **obj, const char *name, Error **errp);
     void (*type_number)(Visitor *v, double *obj, const char *name,
                         Error **errp);
+    void (*start_array)(Visitor *v, void **obj, const char *name,
+                        size_t elem_count, size_t elem_size, Error **errp);
+    void (*next_array)(Visitor *v, Error **errp);
+    void (*end_array)(Visitor *v, Error **errp);
 
     /* May be NULL */
     void (*start_optional)(Visitor *v, bool *present, const char *name,
@@ -88,5 +92,9 @@ void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp);
 void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp);
 void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp);
 void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp);
+void visit_start_array(Visitor *v, void **obj, const char *name,
+                       size_t elem_count, size_t elem_size, Error **errp);
+void visit_next_array(Visitor *v, Error **errp);
+void visit_end_array(Visitor *v, Error **errp);
 
 #endif
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 8d4e94a..3a03537 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -17,6 +17,32 @@ import os
 import getopt
 import errno
 
+def generate_visit_array_body(name, info):
+    if info.has_key('array_capacity'):
+        array_capacity = info['array_capacity']
+    else:
+        array_capacity = info['array_size']
+
+    if info['array_size'].isdigit():
+        array_size = info['array_size']
+    else:
+        array_size = "(*obj)->%s" % info['array_size']
+
+    ret = mcgen('''
+visit_start_array(m, (void **)obj, "%(name)s", %(array_capacity)s, sizeof(%(type)s), errp);
+int %(name)s_i;
+for (%(name)s_i = 0; %(name)s_i < %(array_size)s; %(name)s_i++) {
+    visit_type_%(type_short)s(m, &(*obj)->%(name)s[%(name)s_i], NULL, errp);
+    visit_next_array(m, errp);
+}
+visit_end_array(m, errp);
+''',
+                name=name, type=c_type(info['type'][0]),
+                type_short=info['type'][0],
+                array_size=array_size,
+                array_capacity=array_capacity)
+    return ret
+
 def generate_visit_struct_body(field_prefix, members):
     ret = ""
     if len(field_prefix):
-- 
1.7.4.1