diff options
Diffstat (limited to 'lib/rb/ext/struct.c')
| -rw-r--r-- | lib/rb/ext/struct.c | 605 |
1 files changed, 605 insertions, 0 deletions
diff --git a/lib/rb/ext/struct.c b/lib/rb/ext/struct.c new file mode 100644 index 000000000..fee285e97 --- /dev/null +++ b/lib/rb/ext/struct.c @@ -0,0 +1,605 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + */ + +#include <struct.h> +#include <constants.h> +#include "macros.h" + +#ifndef HAVE_STRLCPY + +static +size_t +strlcpy (char *dst, const char *src, size_t dst_sz) +{ + size_t n; + + for (n = 0; n < dst_sz; n++) { + if ((*dst++ = *src++) == '\0') + break; + } + + if (n < dst_sz) + return n; + if (n > 0) + *(dst - 1) = '\0'; + return n + strlen (src); +} + +#endif + +static native_proto_method_table *mt; +static native_proto_method_table *default_mt; +static VALUE last_proto_class = Qnil; + +#define IS_CONTAINER(ttype) ((ttype) == TTYPE_MAP || (ttype) == TTYPE_LIST || (ttype) == TTYPE_SET) +#define STRUCT_FIELDS(obj) rb_const_get(CLASS_OF(obj), fields_const_id) + +static void set_native_proto_function_pointers(VALUE protocol) { + VALUE method_table_object = rb_const_get(CLASS_OF(protocol), rb_intern("@native_method_table")); + // TODO: check nil? + Data_Get_Struct(method_table_object, native_proto_method_table, mt); +} + +static void check_native_proto_method_table(VALUE protocol) { + VALUE protoclass = CLASS_OF(protocol); + if (protoclass != last_proto_class) { + last_proto_class = protoclass; + if (rb_funcall(protocol, native_qmark_method_id, 0) == Qtrue) { + set_native_proto_function_pointers(protocol); + } else { + mt = default_mt; + } + } +} + +//------------------------------------------- +// Writing section +//------------------------------------------- + +// default fn pointers for protocol stuff here + +VALUE default_write_bool(VALUE protocol, VALUE value) { + rb_funcall(protocol, write_boolean_method_id, 1, value); + return Qnil; +} + +VALUE default_write_byte(VALUE protocol, VALUE value) { + rb_funcall(protocol, write_byte_method_id, 1, value); + return Qnil; +} + +VALUE default_write_i16(VALUE protocol, VALUE value) { + rb_funcall(protocol, write_i16_method_id, 1, value); + return Qnil; +} + +VALUE default_write_i32(VALUE protocol, VALUE value) { + rb_funcall(protocol, write_i32_method_id, 1, value); + return Qnil; +} + +VALUE default_write_i64(VALUE protocol, VALUE value) { + rb_funcall(protocol, write_i64_method_id, 1, value); + return Qnil; +} + +VALUE default_write_double(VALUE protocol, VALUE value) { + rb_funcall(protocol, write_double_method_id, 1, value); + return Qnil; +} + +VALUE default_write_string(VALUE protocol, VALUE value) { + rb_funcall(protocol, write_string_method_id, 1, value); + return Qnil; +} + +VALUE default_write_list_begin(VALUE protocol, VALUE etype, VALUE length) { + rb_funcall(protocol, write_list_begin_method_id, 2, etype, length); + return Qnil; +} + +VALUE default_write_list_end(VALUE protocol) { + rb_funcall(protocol, write_list_end_method_id, 0); + return Qnil; +} + +VALUE default_write_set_begin(VALUE protocol, VALUE etype, VALUE length) { + rb_funcall(protocol, write_set_begin_method_id, 2, etype, length); + return Qnil; +} + +VALUE default_write_set_end(VALUE protocol) { + rb_funcall(protocol, write_set_end_method_id, 0); + return Qnil; +} + +VALUE default_write_map_begin(VALUE protocol, VALUE ktype, VALUE vtype, VALUE length) { + rb_funcall(protocol, write_map_begin_method_id, 3, ktype, vtype, length); + return Qnil; +} + +VALUE default_write_map_end(VALUE protocol) { + rb_funcall(protocol, write_map_end_method_id, 0); + return Qnil; +} + +VALUE default_write_struct_begin(VALUE protocol, VALUE struct_name) { + rb_funcall(protocol, write_struct_begin_method_id, 1, struct_name); + return Qnil; +} + +VALUE default_write_struct_end(VALUE protocol) { + rb_funcall(protocol, write_struct_end_method_id, 0); + return Qnil; +} + +VALUE default_write_field_begin(VALUE protocol, VALUE name, VALUE type, VALUE id) { + rb_funcall(protocol, write_field_begin_method_id, 3, name, type, id); + return Qnil; +} + +VALUE default_write_field_end(VALUE protocol) { + rb_funcall(protocol, write_field_end_method_id, 0); + return Qnil; +} + +VALUE default_write_field_stop(VALUE protocol) { + rb_funcall(protocol, write_field_stop_method_id, 0); + return Qnil; +} + +VALUE default_read_field_begin(VALUE protocol) { + return rb_funcall(protocol, read_field_begin_method_id, 0); +} + +VALUE default_read_field_end(VALUE protocol) { + return rb_funcall(protocol, read_field_end_method_id, 0); +} + +VALUE default_read_map_begin(VALUE protocol) { + return rb_funcall(protocol, read_map_begin_method_id, 0); +} + +VALUE default_read_map_end(VALUE protocol) { + return rb_funcall(protocol, read_map_end_method_id, 0); +} + +VALUE default_read_list_begin(VALUE protocol) { + return rb_funcall(protocol, read_list_begin_method_id, 0); +} + +VALUE default_read_list_end(VALUE protocol) { + return rb_funcall(protocol, read_list_end_method_id, 0); +} + +VALUE default_read_set_begin(VALUE protocol) { + return rb_funcall(protocol, read_set_begin_method_id, 0); +} + +VALUE default_read_set_end(VALUE protocol) { + return rb_funcall(protocol, read_set_end_method_id, 0); +} + +VALUE default_read_byte(VALUE protocol) { + return rb_funcall(protocol, read_byte_method_id, 0); +} + +VALUE default_read_bool(VALUE protocol) { + return rb_funcall(protocol, read_bool_method_id, 0); +} + +VALUE default_read_i16(VALUE protocol) { + return rb_funcall(protocol, read_i16_method_id, 0); +} + +VALUE default_read_i32(VALUE protocol) { + return rb_funcall(protocol, read_i32_method_id, 0); +} + +VALUE default_read_i64(VALUE protocol) { + return rb_funcall(protocol, read_i64_method_id, 0); +} + +VALUE default_read_double(VALUE protocol) { + return rb_funcall(protocol, read_double_method_id, 0); +} + +VALUE default_read_string(VALUE protocol) { + return rb_funcall(protocol, read_string_method_id, 0); +} + +VALUE default_read_struct_begin(VALUE protocol) { + return rb_funcall(protocol, read_struct_begin_method_id, 0); +} + +VALUE default_read_struct_end(VALUE protocol) { + return rb_funcall(protocol, read_struct_end_method_id, 0); +} + +static void set_default_proto_function_pointers() { + default_mt = ALLOC(native_proto_method_table); + + default_mt->write_field_begin = default_write_field_begin; + default_mt->write_field_stop = default_write_field_stop; + default_mt->write_map_begin = default_write_map_begin; + default_mt->write_map_end = default_write_map_end; + default_mt->write_list_begin = default_write_list_begin; + default_mt->write_list_end = default_write_list_end; + default_mt->write_set_begin = default_write_set_begin; + default_mt->write_set_end = default_write_set_end; + default_mt->write_byte = default_write_byte; + default_mt->write_bool = default_write_bool; + default_mt->write_i16 = default_write_i16; + default_mt->write_i32 = default_write_i32; + default_mt->write_i64 = default_write_i64; + default_mt->write_double = default_write_double; + default_mt->write_string = default_write_string; + default_mt->write_struct_begin = default_write_struct_begin; + default_mt->write_struct_end = default_write_struct_end; + default_mt->write_field_end = default_write_field_end; + + default_mt->read_struct_begin = default_read_struct_begin; + default_mt->read_struct_end = default_read_struct_end; + default_mt->read_field_begin = default_read_field_begin; + default_mt->read_field_end = default_read_field_end; + default_mt->read_map_begin = default_read_map_begin; + default_mt->read_map_end = default_read_map_end; + default_mt->read_list_begin = default_read_list_begin; + default_mt->read_list_end = default_read_list_end; + default_mt->read_set_begin = default_read_set_begin; + default_mt->read_set_end = default_read_set_end; + default_mt->read_byte = default_read_byte; + default_mt->read_bool = default_read_bool; + default_mt->read_i16 = default_read_i16; + default_mt->read_i32 = default_read_i32; + default_mt->read_i64 = default_read_i64; + default_mt->read_double = default_read_double; + default_mt->read_string = default_read_string; +} + +// end default protocol methods + + +static VALUE rb_thrift_struct_write(VALUE self, VALUE protocol); +static void write_anything(int ttype, VALUE value, VALUE protocol, VALUE field_info); + +VALUE get_field_value(VALUE obj, VALUE field_name) { + char name_buf[RSTRING_LEN(field_name) + 1]; + + name_buf[0] = '@'; + strlcpy(&name_buf[1], RSTRING_PTR(field_name), sizeof(name_buf)); + + VALUE value = rb_ivar_get(obj, rb_intern(name_buf)); + + return value; +} + +static void write_container(int ttype, VALUE field_info, VALUE value, VALUE protocol) { + int sz, i; + + if (ttype == TTYPE_MAP) { + VALUE keys; + VALUE key; + VALUE val; + + Check_Type(value, T_HASH); + + VALUE key_info = rb_hash_aref(field_info, key_sym); + VALUE keytype_value = rb_hash_aref(key_info, type_sym); + int keytype = FIX2INT(keytype_value); + + VALUE value_info = rb_hash_aref(field_info, value_sym); + VALUE valuetype_value = rb_hash_aref(value_info, type_sym); + int valuetype = FIX2INT(valuetype_value); + + keys = rb_funcall(value, keys_method_id, 0); + + sz = RARRAY_LEN(keys); + + mt->write_map_begin(protocol, keytype_value, valuetype_value, INT2FIX(sz)); + + for (i = 0; i < sz; i++) { + key = rb_ary_entry(keys, i); + val = rb_hash_aref(value, key); + + if (IS_CONTAINER(keytype)) { + write_container(keytype, key_info, key, protocol); + } else { + write_anything(keytype, key, protocol, key_info); + } + + if (IS_CONTAINER(valuetype)) { + write_container(valuetype, value_info, val, protocol); + } else { + write_anything(valuetype, val, protocol, value_info); + } + } + + mt->write_map_end(protocol); + } else if (ttype == TTYPE_LIST) { + Check_Type(value, T_ARRAY); + + sz = RARRAY_LEN(value); + + VALUE element_type_info = rb_hash_aref(field_info, element_sym); + VALUE element_type_value = rb_hash_aref(element_type_info, type_sym); + int element_type = FIX2INT(element_type_value); + + mt->write_list_begin(protocol, element_type_value, INT2FIX(sz)); + for (i = 0; i < sz; ++i) { + VALUE val = rb_ary_entry(value, i); + if (IS_CONTAINER(element_type)) { + write_container(element_type, element_type_info, val, protocol); + } else { + write_anything(element_type, val, protocol, element_type_info); + } + } + mt->write_list_end(protocol); + } else if (ttype == TTYPE_SET) { + VALUE items; + + if (TYPE(value) == T_ARRAY) { + items = value; + } else { + if (rb_cSet == CLASS_OF(value)) { + items = rb_funcall(value, entries_method_id, 0); + } else { + Check_Type(value, T_HASH); + items = rb_funcall(value, keys_method_id, 0); + } + } + + sz = RARRAY_LEN(items); + + VALUE element_type_info = rb_hash_aref(field_info, element_sym); + VALUE element_type_value = rb_hash_aref(element_type_info, type_sym); + int element_type = FIX2INT(element_type_value); + + mt->write_set_begin(protocol, element_type_value, INT2FIX(sz)); + + for (i = 0; i < sz; i++) { + VALUE val = rb_ary_entry(items, i); + if (IS_CONTAINER(element_type)) { + write_container(element_type, element_type_info, val, protocol); + } else { + write_anything(element_type, val, protocol, element_type_info); + } + } + + mt->write_set_end(protocol); + } else { + rb_raise(rb_eNotImpError, "can't write container of type: %d", ttype); + } +} + +static void write_anything(int ttype, VALUE value, VALUE protocol, VALUE field_info) { + if (ttype == TTYPE_BOOL) { + mt->write_bool(protocol, value); + } else if (ttype == TTYPE_BYTE) { + mt->write_byte(protocol, value); + } else if (ttype == TTYPE_I16) { + mt->write_i16(protocol, value); + } else if (ttype == TTYPE_I32) { + mt->write_i32(protocol, value); + } else if (ttype == TTYPE_I64) { + mt->write_i64(protocol, value); + } else if (ttype == TTYPE_DOUBLE) { + mt->write_double(protocol, value); + } else if (ttype == TTYPE_STRING) { + mt->write_string(protocol, value); + } else if (IS_CONTAINER(ttype)) { + write_container(ttype, field_info, value, protocol); + } else if (ttype == TTYPE_STRUCT) { + rb_thrift_struct_write(value, protocol); + } else { + rb_raise(rb_eNotImpError, "Unknown type for binary_encoding: %d", ttype); + } +} + +static VALUE rb_thrift_struct_write(VALUE self, VALUE protocol) { + // call validate + rb_funcall(self, validate_method_id, 0); + + check_native_proto_method_table(protocol); + + // write struct begin + mt->write_struct_begin(protocol, rb_class_name(CLASS_OF(self))); + + // iterate through all the fields here + VALUE struct_fields = STRUCT_FIELDS(self); + VALUE struct_field_ids_unordered = rb_funcall(struct_fields, keys_method_id, 0); + VALUE struct_field_ids_ordered = rb_funcall(struct_field_ids_unordered, sort_method_id, 0); + + int i = 0; + for (i=0; i < RARRAY_LEN(struct_field_ids_ordered); i++) { + VALUE field_id = rb_ary_entry(struct_field_ids_ordered, i); + VALUE field_info = rb_hash_aref(struct_fields, field_id); + + VALUE ttype_value = rb_hash_aref(field_info, type_sym); + int ttype = FIX2INT(ttype_value); + VALUE field_name = rb_hash_aref(field_info, name_sym); + VALUE field_value = get_field_value(self, field_name); + + if (!NIL_P(field_value)) { + mt->write_field_begin(protocol, field_name, ttype_value, field_id); + + write_anything(ttype, field_value, protocol, field_info); + + mt->write_field_end(protocol); + } + } + + mt->write_field_stop(protocol); + + // write struct end + mt->write_struct_end(protocol); + + return Qnil; +} + +//------------------------------------------- +// Reading section +//------------------------------------------- + +static VALUE rb_thrift_struct_read(VALUE self, VALUE protocol); + +static void set_field_value(VALUE obj, VALUE field_name, VALUE value) { + char name_buf[RSTRING_LEN(field_name) + 1]; + + name_buf[0] = '@'; + strlcpy(&name_buf[1], RSTRING_PTR(field_name), sizeof(name_buf)); + + rb_ivar_set(obj, rb_intern(name_buf), value); +} + +static VALUE read_anything(VALUE protocol, int ttype, VALUE field_info) { + VALUE result = Qnil; + + if (ttype == TTYPE_BOOL) { + result = mt->read_bool(protocol); + } else if (ttype == TTYPE_BYTE) { + result = mt->read_byte(protocol); + } else if (ttype == TTYPE_I16) { + result = mt->read_i16(protocol); + } else if (ttype == TTYPE_I32) { + result = mt->read_i32(protocol); + } else if (ttype == TTYPE_I64) { + result = mt->read_i64(protocol); + } else if (ttype == TTYPE_STRING) { + result = mt->read_string(protocol); + } else if (ttype == TTYPE_DOUBLE) { + result = mt->read_double(protocol); + } else if (ttype == TTYPE_STRUCT) { + VALUE klass = rb_hash_aref(field_info, class_sym); + result = rb_class_new_instance(0, NULL, klass); + rb_thrift_struct_read(result, protocol); + } else if (ttype == TTYPE_MAP) { + int i; + + VALUE map_header = mt->read_map_begin(protocol); + int key_ttype = FIX2INT(rb_ary_entry(map_header, 0)); + int value_ttype = FIX2INT(rb_ary_entry(map_header, 1)); + int num_entries = FIX2INT(rb_ary_entry(map_header, 2)); + + VALUE key_info = rb_hash_aref(field_info, key_sym); + VALUE value_info = rb_hash_aref(field_info, value_sym); + + result = rb_hash_new(); + + for (i = 0; i < num_entries; ++i) { + VALUE key, val; + + key = read_anything(protocol, key_ttype, key_info); + val = read_anything(protocol, value_ttype, value_info); + + rb_hash_aset(result, key, val); + } + + mt->read_map_end(protocol); + } else if (ttype == TTYPE_LIST) { + int i; + + VALUE list_header = mt->read_list_begin(protocol); + int element_ttype = FIX2INT(rb_ary_entry(list_header, 0)); + int num_elements = FIX2INT(rb_ary_entry(list_header, 1)); + result = rb_ary_new2(num_elements); + + for (i = 0; i < num_elements; ++i) { + rb_ary_push(result, read_anything(protocol, element_ttype, rb_hash_aref(field_info, element_sym))); + } + + + mt->read_list_end(protocol); + } else if (ttype == TTYPE_SET) { + VALUE items; + int i; + + VALUE set_header = mt->read_set_begin(protocol); + int element_ttype = FIX2INT(rb_ary_entry(set_header, 0)); + int num_elements = FIX2INT(rb_ary_entry(set_header, 1)); + items = rb_ary_new2(num_elements); + + for (i = 0; i < num_elements; ++i) { + rb_ary_push(items, read_anything(protocol, element_ttype, rb_hash_aref(field_info, element_sym))); + } + + + mt->read_set_end(protocol); + + result = rb_class_new_instance(1, &items, rb_cSet); + } else { + rb_raise(rb_eNotImpError, "read_anything not implemented for type %d!", ttype); + } + + return result; +} + +static VALUE rb_thrift_struct_read(VALUE self, VALUE protocol) { + check_native_proto_method_table(protocol); + + // read struct begin + mt->read_struct_begin(protocol); + + VALUE struct_fields = STRUCT_FIELDS(self); + + // read each field + while (true) { + VALUE field_header = mt->read_field_begin(protocol); + VALUE field_type_value = rb_ary_entry(field_header, 1); + int field_type = FIX2INT(field_type_value); + + if (field_type == TTYPE_STOP) { + break; + } + + // make sure we got a type we expected + VALUE field_info = rb_hash_aref(struct_fields, rb_ary_entry(field_header, 2)); + + if (!NIL_P(field_info)) { + int specified_type = FIX2INT(rb_hash_aref(field_info, type_sym)); + if (field_type == specified_type) { + // read the value + VALUE name = rb_hash_aref(field_info, name_sym); + set_field_value(self, name, read_anything(protocol, field_type, field_info)); + } else { + rb_funcall(protocol, skip_method_id, 1, field_type_value); + } + } else { + rb_funcall(protocol, skip_method_id, 1, field_type_value); + } + + // read field end + mt->read_field_end(protocol); + } + + // read struct end + mt->read_struct_end(protocol); + + return Qnil; +} + +void Init_struct() { + VALUE struct_module = rb_const_get(thrift_module, rb_intern("Struct")); + + rb_define_method(struct_module, "write", rb_thrift_struct_write, 1); + rb_define_method(struct_module, "read", rb_thrift_struct_read, 1); + + set_default_proto_function_pointers(); +} + |