Tasmota/tasmota/xdrv_52_1_berry_native.ino

126 lines
4.5 KiB
C++

/*
xdrv_52_1_berry_native.ino - Berry scripting language, native fucnctions
Copyright (C) 2021 Stephan Hadinger, Berry language by Guan Wenliang https://github.com/Skiars/berry
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef USE_BERRY
#include <berry.h>
#include <Wire.h>
const char kTypeError[] PROGMEM = "type_error";
const char kInternalError[] PROGMEM = "intenal_error";
/*********************************************************************************************\
* LVGL top level virtual members
*
* Responds to virtual constants
\*********************************************************************************************/
extern "C" {
#include "be_vm.h"
// Call error handler and pop all from stack
void be_error_pop_all(bvm *vm);
void be_error_pop_all(bvm *vm) {
if (vm->obshook != NULL) (*vm->obshook)(vm, BE_OBS_PCALL_ERROR);
be_pop(vm, be_top(vm)); // clear Berry stack
}
#include "be_exec.h"
#include "be_debug.h"
void be_dumpstack(bvm *vm) {
int32_t top = be_top(vm);
AddLog(LOG_LEVEL_INFO, "BRY: top=%d", top);
be_tracestack(vm);
for (uint32_t i = 1; i <= top; i++) {
const char * tname = be_typename(vm, i);
const char * cname = be_classname(vm, i);
if (be_isstring(vm, i)) {
cname = be_tostring(vm, i);
}
AddLog(LOG_LEVEL_INFO, "BRY: stack[%d] = type='%s' (%s)", i, (tname != nullptr) ? tname : "", (cname != nullptr) ? cname : "");
}
}
// convert to unsigned 8 bits
static uint8_t to_u8(int32_t v) {
if (v < 0) { return 0; }
if (v > 0xFF) { return 0xFF; }
return v;
}
int32_t member_find(bvm *vm, const char *key, int32_t default_value) {
int32_t ret = default_value;
if (be_getmember(vm, -1, key)) {
if (be_isint(vm, -1)) {
ret = be_toint(vm, -1);
}
}
be_pop(vm, 1);
return ret;
}
static bool map_find(bvm *vm, const char *key)
{
be_getmethod(vm, -1, "find"); // look for "find" method of "Map" instance
be_pushvalue(vm, -2); // put back instance as first argument (implicit instance)
be_pushstring(vm, key); // push string as second argument
be_call(vm, 2); // call wirn 2 parameters (implicit instance and key)
be_pop(vm, 2); // pop 2 arguments, the function is replaced by result
return !be_isnil(vm, -1); // true if not 'nil'
}
static int32_t get_list_size(bvm *vm) {
be_getmethod(vm, -1, "size"); // look for "size" method of "list" instance
be_pushvalue(vm, -2); // put back instance as first argument (implicit instance)
be_call(vm, 1); // call wirn 2 parameters (implicit instance and key)
int32_t ret = be_toint(vm, -2);
be_pop(vm, 2); // pop 1 argument and return value
return ret;
}
// get item number `index` from list, index must be valid or raises an exception
static void get_list_item(bvm *vm, int32_t index) {
be_getmethod(vm, -1, "item"); // look for "size" method of "list" instance
be_pushvalue(vm, -2); // put back instance as first argument (implicit instance)
be_pushint(vm, index);
// be_dumpstack(vm);
be_call(vm, 2); // call wirn 2 parameters (implicit instance and key)
be_pop(vm, 2); // pop 2 arguments and return value
}
}
/*********************************************************************************************\
* Manage timeout for Berry code
*
\*********************************************************************************************/
void BrTimeoutStart(void) {
berry.timeout = millis() + USE_BERRY_TIMEOUT;
if (0 == berry.timeout) {
berry.timeout = 1; // rare case when value accidentally computes to zero
}
}
void BrTimeoutYield(void) {
if (0 != berry.timeout) {
BrTimeoutStart();
}
}
void BrTimeoutReset(void) {
berry.timeout = 0; // remove timer
}
#endif // USE_BERRY