--- /dev/null
+#!/usr/bin/env python2
+#
+# Copyright (c) 2018 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from string import Template
+
+from jni_common_gen import generate_j2c_swap, generate_j2c_field_swap, generate_j2c_identifiers, generate_c2j_swap
+from jvpp_model import Class, Enum, Union
+
+
+def generate_type_handlers(model, logger):
+ """
+ Generates host-to-net and net-to-host functions for all custom types defined in the VPP API
+ :param model: meta-model of VPP API used for jVPP generation.
+ :param logger: jVPP logger
+ """
+ type_handlers = []
+ for t in model.types:
+ #TODO(VPP-1186): move the logic to JNI generators
+ if isinstance(t, Class):
+ _generate_class(model, t, type_handlers)
+ elif isinstance(t, Enum):
+ _generate_enum(model, t, type_handlers)
+ elif isinstance(t, Union):
+ _generate_union(model, t, type_handlers)
+ else:
+ logger.debug("Skipping custom JNI type handler generation for %s", t)
+
+ return "\n".join(type_handlers)
+
+
+def _generate_class(model, t, type_handlers):
+ ref_name = t.java_name_lower
+ type_handlers.append(_TYPE_HOST_TO_NET_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ type_reference_name=ref_name,
+ class_FQN=t.jni_name,
+ jni_identifiers=generate_j2c_identifiers(t, class_ref_name="%sClass" % ref_name, object_ref_name="_host"),
+ type_swap=generate_j2c_swap(t, struct_ref_name="_net")
+ ))
+ type_handlers.append(_TYPE_NET_TO_HOST_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ type_reference_name=ref_name,
+ class_FQN=t.jni_name,
+ type_swap=generate_c2j_swap(t, object_ref_name="_host", struct_ref_name="_net")
+ ))
+
+_TYPE_HOST_TO_NET_TEMPLATE = Template("""
+/**
+ * Host to network byte order conversion for ${c_name} type.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _host_to_net_${c_name}(JNIEnv * env, jobject _host, vl_api_${c_name}_t * _net)
+{
+ jclass ${type_reference_name}Class = (*env)->FindClass(env, "${class_FQN}");
+$jni_identifiers
+$type_swap
+}""")
+
+_TYPE_NET_TO_HOST_TEMPLATE = Template("""
+/**
+ * Network to host byte order conversion for ${c_name} type.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _net_to_host_${c_name}(JNIEnv * env, vl_api_${c_name}_t * _net, jobject _host)
+{
+ jclass ${type_reference_name}Class = (*env)->FindClass(env, "${class_FQN}");
+$type_swap
+}""")
+
+
+def _generate_enum(model, t, type_handlers):
+ value_type = t.value.type
+ type_handlers.append(_ENUM_NET_TO_HOST_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ class_FQN=t.jni_name,
+ jni_signature=value_type.jni_signature,
+ jni_type=value_type.jni_type,
+ jni_accessor=value_type.jni_accessor,
+ swap=_generate_scalar_host_to_net_swap(t.value)
+ ))
+
+ type_handlers.append(_ENUM_HOST_TO_NET_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ class_FQN=t.jni_name,
+ jni_type=value_type.jni_type,
+ type_swap=_generate_scalar_net_to_host_swap(t.value)
+ ))
+
+_ENUM_NET_TO_HOST_TEMPLATE = Template("""
+/**
+ * Host to network byte order conversion for ${c_name} enum.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _host_to_net_${c_name}(JNIEnv * env, jobject _host, vl_api_${c_name}_t * _net)
+{
+ jclass enumClass = (*env)->FindClass(env, "${class_FQN}");
+ jfieldID valueFieldId = (*env)->GetStaticFieldID(env, enumClass, "value", "${jni_signature}");
+ ${jni_type} value = (*env)->GetStatic${jni_accessor}Field(env, enumClass, valueFieldId);
+ ${swap};
+}""")
+
+_ENUM_HOST_TO_NET_TEMPLATE = Template("""
+/**
+ * Network to host byte order conversion for ${c_name} type.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline ${jni_type} _net_to_host_${c_name}(vl_api_${c_name}_t _net)
+{
+ return (${jni_type}) $type_swap
+}""")
+
+
+def _generate_scalar_host_to_net_swap(field):
+ field_type = field.type
+ if field_type.is_swap_needed:
+ return field_type.get_host_to_net_function(field.java_name, "*_net")
+ else:
+ return "*_net = %s" % field.java_name
+
+
+def _generate_scalar_net_to_host_swap(field):
+ field_type = field.type
+ if field_type.is_swap_needed:
+ return "%s((%s) _net);" % (field_type.net_to_host_function, field_type.name)
+ else:
+ return "_net"
+
+
+def _generate_union(model, t, type_handlers):
+ type_handlers.append(_generate_union_host_to_net(model, t))
+ type_handlers.append(_generate_union_net_to_host(model, t))
+
+
+def _generate_union_host_to_net(model, t):
+ swap = []
+ for i, field in enumerate(t.fields):
+ field_type = field.type
+ swap.append(_UNION_FIELD_HOST_TO_NET_TEMPLATE.substitute(
+ field_index=i,
+ java_name=field.java_name,
+ jni_signature=field_type.jni_signature,
+ jni_type=field_type.jni_type,
+ jni_accessor=field_type.jni_accessor,
+ swap=generate_j2c_field_swap(field, struct_ref_name="_net")
+ ))
+
+ return _UNION_HOST_TO_NET_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ class_FQN=t.jni_name,
+ swap="".join(swap)
+ )
+
+_UNION_FIELD_HOST_TO_NET_TEMPLATE = Template("""
+ if (_activeMember == ${field_index}) {
+ jfieldID fieldId = (*env)->GetFieldID(env, _class, "${java_name}", "${jni_signature}");
+ ${jni_type} ${java_name} = (*env)->Get${jni_accessor}Field(env, _host, fieldId);
+ ${swap}
+ }""")
+
+_UNION_HOST_TO_NET_TEMPLATE = Template("""
+/**
+ * Host to network byte order conversion for ${c_name} union.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _host_to_net_${c_name}(JNIEnv * env, jobject _host, vl_api_${c_name}_t * _net)
+{
+ jclass _class = (*env)->FindClass(env, "${class_FQN}");
+
+ jfieldID _activeMemberFieldId = (*env)->GetFieldID(env, _class, "_activeMember", "I");
+ jint _activeMember = (*env)->GetIntField(env, _host, _activeMemberFieldId);
+$swap
+}""")
+
+
+def _generate_union_net_to_host(model, t):
+ return _UNION_NET_TO_HOST_TEMPLATE.substitute(
+ c_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ type_reference_name=t.java_name_lower,
+ class_FQN=t.jni_name,
+ swap=generate_c2j_swap(t, object_ref_name="_host", struct_ref_name="_net")
+ )
+
+_UNION_NET_TO_HOST_TEMPLATE = Template("""
+/**
+ * Network to host byte order conversion for ${c_name} union.
+ * Generated based on $json_filename:
+$json_definition
+ */
+static inline void _net_to_host_${c_name}(JNIEnv * env, vl_api_${c_name}_t * _net, jobject _host)
+{
+ jclass ${type_reference_name}Class = (*env)->FindClass(env, "${class_FQN}");
+$swap
+}""")
Code Review / vpp.git / blobdiff