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git.gir.st - tmk_keyboard.git/blob - tmk_core/tool/mbed/mbed-sdk/libraries/rpc/rpc.cpp
1 /* mbed Microcontroller Library
2 * Copyright (c) 2006-2013 ARM Limited
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
22 RPC::RPC(const char *name
) {
23 _from_construct
= false;
25 _name
= new char[strlen(name
) + 1];
29 sprintf(_name
, "obj%p", this);
31 // put this object at head of the list
37 // remove this object from the list
38 if (_head
== this) { // first in the list, so just drop me
40 } else { // find the object before me, then drop me
42 while (p
->_next
!= this) {
49 const rpc_method
*RPC::get_rpc_methods() {
50 static const rpc_method methods
[] = {
51 {"delete", rpc_method_caller
<RPC
, &RPC::delete_self
> },
57 RPC
*RPC::lookup(const char *name
) {
58 size_t len
= strlen(name
);
59 for (RPC
*p
= _head
; p
!= NULL
; p
= p
->_next
) {
60 /* Check that p->_name matches name and is the correct length */
61 if (strncmp(p
->_name
, name
, len
) == 0 && (strlen(p
->_name
) == len
)) {
68 void RPC::delete_self() {
70 if (_from_construct
) {
75 void RPC::list_objs(Arguments
*args
, Reply
*result
) {
76 for (RPC
*ptr
= RPC::_head
; ptr
!= NULL
; ptr
= ptr
->_next
) {
77 if (ptr
->_from_construct
) {
78 result
->putData
<const char*>(ptr
->_name
);
83 void RPC::clear(Arguments
*, Reply
*) {
84 RPC
*ptr
= RPC::_head
;
89 if (tmp
->_from_construct
) {
95 const rpc_function
RPC::_RPC_funcs
[] = {
96 {"clear", &RPC::clear
},
97 { "objects", &RPC::list_objs
},
101 rpc_class
RPC::_RPC_class
= { "RPC", _RPC_funcs
, NULL
};
103 RPC
*RPC::_head
= NULL
;
105 rpc_class
*RPC::_classes
= &_RPC_class
;
107 bool RPC::call(const char *request
, char *reply
) {
108 if (request
== NULL
) return false;
110 Arguments
args(request
);
113 /* If there's no name print object and class names to result */
114 if (args
.obj_name
== NULL
) {
115 for (RPC
*p
= RPC::_head
; p
!= NULL
; p
= p
->_next
) {
116 r
.putData
<const char*>(p
->_name
);
118 for (rpc_class
*c
= RPC::_classes
; c
!= NULL
; c
= c
->next
) {
119 r
.putData
<const char*>(c
->name
);
124 /* First try matching an instance */
125 RPC
*p
= lookup(args
.obj_name
);
127 /* Get the list of methods we support */
128 const rpc_method
*cur_method
= p
->get_rpc_methods();
130 /* When there's no method print method names to result */
131 if (args
.method_name
== NULL
) {
133 for (; cur_method
->name
!= NULL
; cur_method
++) {
134 r
.putData
<const char*>(cur_method
->name
);
137 /* write_name_arr's args are references, so result and cur_method will have changed */
138 if (cur_method
->super
!= 0) {
139 cur_method
= cur_method
->super(p
);
146 /* Look through the methods for the one whose name matches */
148 for (; cur_method
->name
!= NULL
; cur_method
++) {
149 if (strcmp(cur_method
->name
, args
.method_name
) == 0) {
150 (cur_method
->method_caller
)(p
, &args
, &r
);
155 if (cur_method
->super
!= 0) {
156 cur_method
= cur_method
->super(p
);
158 /* end of methods and no match */
165 /* Then try a class */
166 for (const rpc_class
*q
= _classes
; q
!= NULL
; q
= q
->next
) {
167 if (strcmp(q
->name
, args
.obj_name
) == 0) {
168 /* Matched the class name, so get its functions */
169 const rpc_function
*cur_func
= q
->static_functions
;
170 if (args
.method_name
== NULL
) {
171 for (; cur_func
->name
!= NULL
; cur_func
++) {
172 r
.putData
<const char*>(cur_func
->name
);
176 /* Otherwise call the appropriate function */
177 for (; cur_func
->name
!= NULL
; cur_func
++) {
178 if (strcmp(cur_func
->name
, args
.method_name
) == 0) {
179 (cur_func
->function_caller
)(&args
, &r
);