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-rwxr-xr-xextras/japi/java/jvpp/gen/jvppgen/unions_gen.py98
1 files changed, 98 insertions, 0 deletions
diff --git a/extras/japi/java/jvpp/gen/jvppgen/unions_gen.py b/extras/japi/java/jvpp/gen/jvppgen/unions_gen.py
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+++ b/extras/japi/java/jvpp/gen/jvppgen/unions_gen.py
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+#!/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_common_gen import generate_hash_code, generate_equals, generate_to_string, generate_fields
+from jvpp_model import Union
+
+
+def generate_unions(work_dir, model, logger):
+ logger.debug("Generating unions for %s " % model.json_api_files)
+
+ for t in model.types:
+ if not isinstance(t, Union):
+ continue
+ logger.debug("Generating DTO for union %s", t)
+ java_union_name = t.java_name
+ fields = t.fields
+ type_class = _UNION_TEMPLATE.substitute(
+ plugin_package=model.plugin_package,
+ c_type_name=t.name,
+ json_filename=model.json_api_files,
+ json_definition=t.doc,
+ java_union_name=java_union_name,
+ fields=generate_fields(fields, access_modifier="private"),
+ constructors=_generate_constructors(java_union_name, fields),
+ getters=_generate_getters(fields),
+ hash_code=generate_hash_code(fields),
+ equals=generate_equals(java_union_name, fields),
+ to_string=generate_to_string(java_union_name, fields)
+ )
+ with open("%s/%s.java" % (work_dir, java_union_name), "w") as f:
+ f.write(type_class)
+
+_UNION_TEMPLATE = Template("""
+package ${plugin_package}.types;
+
+/**
+ * <p>This class represents ${c_type_name} union definition.
+ * <br>It was generated by unions_gen.py based on ${json_filename}:
+ * <pre>
+${json_definition}
+ * </pre>
+ */
+public class ${java_union_name} {
+ private final int _activeMember;
+${fields}
+ private ${java_union_name}() {
+ // Constructor for JNI usage. All members can be read.
+ _activeMember = -1;
+ }
+${constructors}
+${getters}
+${hash_code}
+${equals}
+${to_string}
+}
+""")
+
+
+def _generate_constructors(union_name, fields):
+ return "".join(
+ _CONSTRUCTOR_TEMPLATE
+ .substitute(union_name=union_name,
+ field_type=f.type.java_name_fqn,
+ field_name=f.java_name,
+ field_index=i) for i, f in enumerate(fields))
+
+_CONSTRUCTOR_TEMPLATE = Template("""
+ public ${union_name}(${field_type} ${field_name}) {
+ this.${field_name} = java.util.Objects.requireNonNull(${field_name}, "${field_name} should not be null");
+ _activeMember = $field_index;
+ }""")
+
+
+def _generate_getters(fields):
+ return "".join(_GETTER_TEMPLATE.substitute(
+ type=f.type.java_name_fqn,
+ getter_name=f.java_name_upper,
+ field_name=f.java_name
+ ) for f in fields)
+
+_GETTER_TEMPLATE = Template("""
+ public ${type} get${getter_name}() {
+ return ${field_name};
+ }""")