--- /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 jvpp_model import is_array, is_retval, Class, Enum, Union
+
+
+def generate_j2c_identifiers(element, class_ref_name, object_ref_name):
+ identifiers = []
+ for field in element.fields:
+ field_type = field.type
+ identifiers.append(_REQUEST_FIELD_IDENTIFIER_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=class_ref_name,
+ jni_signature=field_type.jni_signature,
+ jni_type=field_type.jni_type,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name
+ ))
+ return "".join(identifiers)
+
+_REQUEST_FIELD_IDENTIFIER_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}, "${java_name}", "${jni_signature}");
+ ${jni_type} ${java_name} = (*env)->Get${jni_accessor}Field(env, ${object_ref_name}, ${java_name}FieldId);
+""")
+
+
+# TODO(VPP-1187): do not inline JNI object creation inside message handlers to reduce number of special cases
+def generate_j2c_swap(element, struct_ref_name):
+ initialization = []
+ for field in element.fields:
+ initialization.append(generate_j2c_field_swap(field, struct_ref_name))
+ return "\n".join(initialization)
+
+
+def generate_j2c_field_swap(field, struct_ref_name):
+ if is_array(field):
+ return _generate_j2c_array_swap(field, struct_ref_name)
+ else:
+ return _generate_j2c_scalar_swap(field, struct_ref_name)
+
+
+def _generate_j2c_array_swap(field, struct_ref_name):
+ # TODO(VPP-1186): move the logic to JNI generators
+ base_type = field.type.base_type
+ if isinstance(base_type, (Class, Enum, Union)):
+ return _generate_j2c_object_array_swap(field, struct_ref_name)
+ elif base_type.is_swap_needed:
+ return _generate_j2c_primitive_type_array_swap(field, struct_ref_name)
+ else:
+ return _generate_j2c_primitive_type_array_no_swap(field, struct_ref_name)
+
+
+def _generate_j2c_object_array_swap(field, struct_ref_name):
+ field_type = field.type
+ field_reference_name = field.java_name
+ c_name = field.name
+ host = "%sArrayElement" % field_reference_name
+ net = "%s->%s[_i]" % (struct_ref_name, c_name)
+ swap_elements = field_type.get_host_to_net_function(host, net)
+ return _J2C_OBJECT_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field_reference_name,
+ field_length_check=_generate_field_length_check(field),
+ swap_elements=swap_elements)
+
+_J2C_OBJECT_ARRAY_SWAP_TEMPLATE = Template("""
+ {
+ if (${field_reference_name}) {
+ size_t _i;
+ jsize cnt = (*env)->GetArrayLength (env, ${field_reference_name});
+ ${field_length_check}
+ for (_i = 0; _i < cnt; _i++) {
+ jobject ${field_reference_name}ArrayElement = (*env)->GetObjectArrayElement(env, ${field_reference_name}, _i);
+ ${swap_elements};
+ }
+ }
+ }
+""")
+
+
+def _generate_j2c_primitive_type_array_swap(field, struct_ref_name):
+ field_reference_name = field.java_name
+ field_type = field.type
+ host = "%sArrayElements[_i]" % field_reference_name
+ net = "%s->%s[_i]" % (struct_ref_name, field.name)
+ swap_elements = field_type.get_host_to_net_function(host, net)
+ return _J2C_PRIMITIVE_TYPE_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field_reference_name,
+ field_length_check=_generate_field_length_check(field),
+ base_type=field_type.base_type.jni_accessor,
+ jni_base_type=field_type.base_type.jni_type,
+ swap_elements=swap_elements
+ )
+
+_J2C_PRIMITIVE_TYPE_ARRAY_SWAP_TEMPLATE = Template("""
+ if (${field_reference_name}) {
+ ${jni_base_type} * ${field_reference_name}ArrayElements = (*env)->Get${base_type}ArrayElements(env, ${field_reference_name}, NULL);
+ size_t _i;
+ jsize cnt = (*env)->GetArrayLength(env, ${field_reference_name});
+ ${field_length_check}
+ for (_i = 0; _i < cnt; _i++) {
+ ${swap_elements};
+ }
+ (*env)->Release${base_type}ArrayElements (env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
+ }
+ """)
+
+
+def _generate_j2c_primitive_type_array_no_swap(field, struct_ref_name):
+ field_type = field.type
+ return _J2C_PRIMITIVE_TYPE_ARRAY_NO_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ field_length_check=_generate_field_length_check(field),
+ base_type=field_type.base_type.jni_accessor,
+ jni_base_type=field_type.base_type.jni_type,
+ struct_reference_name=struct_ref_name,
+ c_name=field.name
+ )
+
+_J2C_PRIMITIVE_TYPE_ARRAY_NO_SWAP_TEMPLATE = Template("""
+ if (${field_reference_name}) {
+ jsize cnt = (*env)->GetArrayLength (env, ${field_reference_name});
+ ${field_length_check}
+ (*env)->Get${base_type}ArrayRegion(env, ${field_reference_name}, 0, cnt, (${jni_base_type} *)${struct_reference_name}->${c_name});
+ }
+""")
+
+
+def _generate_field_length_check(field):
+ # Enforce max length if array has fixed length or uses variable length syntax
+ field_length = str(field.array_len)
+ if field.array_len_field:
+ field_length = field.array_len_field.java_name
+
+ # TODO: remove when ZLAs without length field are disabled
+ if field_length != "0":
+ return _FIELD_LENGTH_CHECK.substitute(field_length=field_length)
+ else:
+ return ""
+
+# Make sure we do not write more elements that are expected
+_FIELD_LENGTH_CHECK = Template("""
+ size_t max_size = ${field_length};
+ if (cnt > max_size) cnt = max_size;""")
+
+
+def _generate_j2c_scalar_swap(field, struct_ref_name):
+ field_type = field.type
+ if field_type.is_swap_needed:
+ host = field.java_name
+ net = "%s->%s" % (struct_ref_name, field.name)
+ return " %s;" % field_type.get_host_to_net_function(host, net)
+ else:
+ return " %s->%s = %s;" % (struct_ref_name, field.name, field.java_name)
+
+
+def generate_c2j_swap(element, object_ref_name, struct_ref_name):
+ msg_java_name = element.java_name_lower
+ initialization = []
+ for field in element.fields:
+ if is_retval(field):
+ # For retval don't generate setters and generate retval check
+ continue
+ elif is_array(field):
+ initialization.append(_generate_c2j_array_swap(msg_java_name, field, object_ref_name, struct_ref_name))
+ else:
+ initialization.append(_generate_c2j_scalar_swap(msg_java_name, field, object_ref_name, struct_ref_name))
+ return "".join(initialization)
+
+
+def _generate_c2j_array_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ # TODO(VPP-1186): move the logic to JNI generators
+ base_type = field.type.base_type
+ if isinstance(base_type, (Class, Union)):
+ return _generate_c2j_object_array_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ elif isinstance(base_type, Enum):
+ return _generate_c2j_enum_array_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ elif base_type.is_swap_needed:
+ return _generate_c2j_primitive_type_array_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ else:
+ return _generate_c2j_primitive_type_array_no_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+
+
+def _generate_c2j_object_array_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_OBJECT_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_name=field_type.base_type.jni_name,
+ field_length=_generate_array_length(field, struct_ref_name),
+ net_to_host_function=field_type.net_to_host_function,
+ struct_ref_name=struct_ref_name,
+ object_ref_name=object_ref_name,
+ c_name=field.name
+ )
+
+_C2J_OBJECT_ARRAY_SWAP_TEMPLATE = Template("""
+ jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${field_reference_name}", "${jni_signature}");
+ {
+ jclass ${field_reference_name}Class = (*env)->FindClass(env, "${jni_name}");
+ jobjectArray ${field_reference_name} = (*env)->NewObjectArray(env, ${field_length}, ${field_reference_name}Class, 0);
+ jmethodID ${field_reference_name}Constructor = (*env)->GetMethodID(env, ${field_reference_name}Class, "<init>", "()V");
+ unsigned int _i;
+ for (_i = 0; _i < ${field_length}; _i++) {
+ jobject ${field_reference_name}ArrayElement = (*env)->NewObject(env, ${field_reference_name}Class, ${field_reference_name}Constructor);
+ ${net_to_host_function}(env, &(${struct_ref_name}->${c_name}[_i]), ${field_reference_name}ArrayElement);
+ (*env)->SetObjectArrayElement(env, ${field_reference_name}, _i, ${field_reference_name}ArrayElement);
+ (*env)->DeleteLocalRef(env, ${field_reference_name}ArrayElement);
+ }
+ (*env)->SetObjectField(env, ${object_ref_name}, ${field_reference_name}FieldId, ${field_reference_name});
+ (*env)->DeleteLocalRef(env, ${field_reference_name});
+ }
+""")
+
+
+def _generate_c2j_enum_array_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ base_type = field_type.base_type
+ return _C2J_ENUM_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_name=base_type.jni_name,
+ field_length=_generate_array_length(field, struct_ref_name),
+ net_to_host_function=field_type.net_to_host_function,
+ jni_signature_enum_value=base_type.value.type.jni_signature,
+ struct_ref_name=struct_ref_name,
+ object_ref_name=object_ref_name,
+ c_name=field.name
+ )
+
+_C2J_ENUM_ARRAY_SWAP_TEMPLATE = Template("""
+ jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${field_reference_name}", "${jni_signature}");
+ {
+ jclass ${field_reference_name}Class = (*env)->FindClass(env, "${jni_name}");
+ jobjectArray ${field_reference_name} = (*env)->NewObjectArray(env, ${field_length}, ${field_reference_name}Class, 0);
+ jmethodID ${field_reference_name}Constructor = (*env)->GetStaticMethodID(env, ${field_reference_name}Class, "forValue", "(${jni_signature_enum_value})${jni_signature}");
+ unsigned int _i;
+ for (_i = 0; _i < ${field_length}; _i++) {
+ jobject ${field_reference_name}ArrayElement = (*env)->CallStaticObjectMethod(env, ${field_reference_name}Class, ${field_reference_name}Constructor, ${net_to_host_function}(${struct_ref_name}->${c_name}[_i]));
+ (*env)->SetObjectArrayElement(env, ${field_reference_name}, _i, ${field_reference_name}ArrayElement);
+ (*env)->DeleteLocalRef(env, ${field_reference_name}ArrayElement);
+ }
+ (*env)->SetObjectField(env, ${object_ref_name}, ${field_reference_name}FieldId, ${field_reference_name});
+ (*env)->DeleteLocalRef(env, ${field_reference_name});
+ }
+""")
+
+
+def _generate_c2j_primitive_type_array_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_PRIMITIVE_TYPE_ARRAY_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_type=field_type.jni_type,
+ base_type=field_type.base_type.jni_accessor,
+ field_length=_generate_array_length(field, struct_ref_name),
+ jni_base_type=field_type.base_type.jni_type,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ net_to_host_function=field_type.net_to_host_function,
+ c_name=field.name
+ )
+
+_C2J_PRIMITIVE_TYPE_ARRAY_SWAP_TEMPLATE = Template("""
+ jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${field_reference_name}", "${jni_signature}");
+ {
+ ${jni_type} ${field_reference_name} = (*env)->New${base_type}Array(env, ${field_length});
+ ${jni_base_type} * ${field_reference_name}ArrayElements = (*env)->Get${base_type}ArrayElements(env, ${field_reference_name}, NULL);
+ unsigned int _i;
+ for (_i = 0; _i < ${field_length}; _i++) {
+ ${field_reference_name}ArrayElements[_i] = ${net_to_host_function}(${struct_ref_name}->${c_name}[_i]);
+ }
+
+ (*env)->Release${base_type}ArrayElements(env, ${field_reference_name}, ${field_reference_name}ArrayElements, 0);
+ (*env)->SetObjectField(env, ${object_ref_name}, ${field_reference_name}FieldId, ${field_reference_name});
+ (*env)->DeleteLocalRef(env, ${field_reference_name});
+ }
+""")
+
+
+def _generate_c2j_primitive_type_array_no_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_PRIMITIVE_TYPE_ARRAY_NO_SWAP_TEMPLATE.substitute(
+ field_reference_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_type=field_type.jni_type,
+ base_type=field_type.base_type.jni_accessor,
+ field_length=_generate_array_length(field, struct_ref_name),
+ jni_base_type=field_type.base_type.jni_type,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ c_name=field.name
+ )
+
+_C2J_PRIMITIVE_TYPE_ARRAY_NO_SWAP_TEMPLATE = Template("""
+ jfieldID ${field_reference_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${field_reference_name}", "${jni_signature}");
+ ${jni_type} ${field_reference_name} = (*env)->New${base_type}Array(env, ${field_length});
+ (*env)->Set${base_type}ArrayRegion(env, ${field_reference_name}, 0, ${field_length}, (const ${jni_base_type}*)${struct_ref_name}->${c_name});
+ (*env)->SetObjectField(env, ${object_ref_name}, ${field_reference_name}FieldId, ${field_reference_name});
+ (*env)->DeleteLocalRef(env, ${field_reference_name});
+""")
+
+
+def _generate_array_length(field, struct_ref_name):
+ if field.array_len_field:
+ len_field = field.array_len_field
+ if len_field.type.is_swap_needed:
+ return "%s(%s->%s)" % (len_field.type.host_to_net_function, struct_ref_name, len_field.name)
+ else:
+ return "%s->%s" % (struct_ref_name, len_field.name)
+ return field.array_len
+
+
+def _generate_c2j_scalar_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ if field_type.is_swap_needed:
+ # TODO(VPP-1186): move the logic to JNI generators
+ if isinstance(field_type, (Class, Union)):
+ return _generate_c2j_object_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ elif isinstance(field_type, Enum):
+ return _generate_c2j_enum_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ else:
+ return _generate_c2j_primitive_type_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+ else:
+ return _generate_c2j_primitive_type_no_swap(msg_java_name, field, object_ref_name, struct_ref_name)
+
+
+def _generate_c2j_object_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_OBJECT_SWAP_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_name=field_type.jni_name,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ net_to_host_function=field_type.net_to_host_function,
+ c_name=field.name)
+
+_C2J_OBJECT_SWAP_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${java_name}", "${jni_signature}");
+ jclass ${java_name}Class = (*env)->FindClass(env, "${jni_name}");
+ jmethodID ${java_name}Constructor = (*env)->GetMethodID(env, ${java_name}Class, "<init>", "()V");
+ jobject ${java_name} = (*env)->NewObject(env, ${java_name}Class, ${java_name}Constructor);
+ ${net_to_host_function}(env, &(${struct_ref_name}->${c_name}), ${java_name});
+ (*env)->Set${jni_accessor}Field(env, ${object_ref_name}, ${java_name}FieldId, ${java_name});
+ (*env)->DeleteLocalRef(env, ${java_name});
+""")
+
+
+def _generate_c2j_enum_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_ENUM_SWAP_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_signature_enum_value=field_type.value.type.jni_signature,
+ jni_name=field_type.jni_name,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ net_to_host_function=field_type.net_to_host_function,
+ c_name=field.name)
+
+_C2J_ENUM_SWAP_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${java_name}", "${jni_signature}");
+ jclass ${java_name}Class = (*env)->FindClass(env, "${jni_name}");
+ jmethodID ${java_name}Constructor = (*env)->GetStaticMethodID(env, ${java_name}Class, "forValue", "(${jni_signature_enum_value})${jni_signature}");
+ jobject ${java_name} = (*env)->CallStaticObjectMethod(env, ${java_name}Class, ${java_name}Constructor, ${net_to_host_function}(${struct_ref_name}->${c_name}));
+ (*env)->SetObjectField(env, ${object_ref_name}, ${java_name}FieldId, ${java_name});
+ (*env)->DeleteLocalRef(env, ${java_name});
+""")
+
+
+def _generate_c2j_primitive_type_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_PRIMITIVE_TYPE_SWAP_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name,
+ net_to_host_function=field_type.net_to_host_function,
+ struct_ref_name=struct_ref_name,
+ c_name=field.name
+ )
+
+_C2J_PRIMITIVE_TYPE_SWAP_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${java_name}", "${jni_signature}");
+ (*env)->Set${jni_accessor}Field(env, ${object_ref_name}, ${java_name}FieldId, ${net_to_host_function}(${struct_ref_name}->${c_name}));
+""")
+
+
+def _generate_c2j_primitive_type_no_swap(msg_java_name, field, object_ref_name, struct_ref_name):
+ field_type = field.type
+ return _C2J_PRIMITIVE_TYPE_NO_SWAP_TEMPLATE.substitute(
+ java_name=field.java_name,
+ class_ref_name=msg_java_name,
+ jni_signature=field_type.jni_signature,
+ jni_accessor=field_type.jni_accessor,
+ object_ref_name=object_ref_name,
+ struct_ref_name=struct_ref_name,
+ c_name=field.name
+ )
+
+_C2J_PRIMITIVE_TYPE_NO_SWAP_TEMPLATE = Template("""
+ jfieldID ${java_name}FieldId = (*env)->GetFieldID(env, ${class_ref_name}Class, "${java_name}", "${jni_signature}");
+ (*env)->Set${jni_accessor}Field(env, ${object_ref_name}, ${java_name}FieldId, ${struct_ref_name}->${c_name});
+""")
Code Review / vpp.git / blobdiff