mirror of
https://github.com/pocketpy/pocketpy
synced 2025-10-20 19:40:18 +00:00
93 lines
3.0 KiB
Dart
93 lines
3.0 KiB
Dart
// ignore_for_file: prefer_function_declarations_over_variables, non_constant_identifier_names, no_leading_underscores_for_local_identifiers
|
|
import 'dart:convert' as cvt;
|
|
import 'package:js/js.dart';
|
|
import 'common.dart';
|
|
|
|
@JS("Module.ccall")
|
|
external dynamic ccall(
|
|
String name, String? returnType, List<String> argTypes, List<dynamic> args);
|
|
|
|
class _Bindings {
|
|
static final pkpy_delete =
|
|
(dynamic p) => ccall("pkpy_delete", null, ["number"], [p]);
|
|
static final pkpy_new_repl =
|
|
(dynamic vm) => ccall("pkpy_new_repl", "number", ["number"], [vm]);
|
|
static final pkpy_repl_input = (dynamic r, String line) =>
|
|
ccall("pkpy_repl_input", "boolean", ["number", "string"], [r, line]);
|
|
static final pkpy_new_vm = (bool use_stdio) =>
|
|
ccall("pkpy_new_vm", "number", ["boolean"], [use_stdio]);
|
|
static final pkpy_vm_add_module = (dynamic vm, String name, String source) =>
|
|
ccall("pkpy_vm_add_module", null, ["number", "string", "string"],
|
|
[vm, name, source]);
|
|
static final pkpy_vm_eval = (dynamic vm, String source) =>
|
|
ccall("pkpy_vm_eval", "string", ["number", "string"], [vm, source]);
|
|
static final pkpy_vm_exec = (dynamic vm, String source) =>
|
|
ccall("pkpy_vm_exec", null, ["number", "string"], [vm, source]);
|
|
static final pkpy_vm_get_global = (dynamic vm, String name) =>
|
|
ccall("pkpy_vm_get_global", "string", ["number", "string"], [vm, name]);
|
|
static final pkpy_vm_read_output =
|
|
(dynamic vm) => ccall("pkpy_vm_read_output", "string", ["number"], [vm]);
|
|
}
|
|
|
|
class VM {
|
|
late final pointer = _Bindings.pkpy_new_vm(false);
|
|
static bool _firstNew = true;
|
|
|
|
VM() {
|
|
if (!_firstNew) return;
|
|
_firstNew = false;
|
|
}
|
|
|
|
void dispose() {
|
|
_Bindings.pkpy_delete(pointer);
|
|
}
|
|
|
|
PyOutput read_output() {
|
|
var _o = _Bindings.pkpy_vm_read_output(pointer);
|
|
String _j = _o;
|
|
var ret = PyOutput.fromJson(cvt.jsonDecode(_j));
|
|
|
|
return ret;
|
|
}
|
|
|
|
/// Add a source module into a virtual machine.
|
|
void add_module(String name, String source) {
|
|
_Bindings.pkpy_vm_add_module(pointer, name, source);
|
|
}
|
|
|
|
/// Evaluate an expression. Return `__repr__` of the result. If there is any error, return `nullptr`.
|
|
String? eval(String source) {
|
|
var ret = _Bindings.pkpy_vm_eval(pointer, source);
|
|
return ret;
|
|
}
|
|
|
|
/// Run a given source on a virtual machine.
|
|
void exec(String source) {
|
|
_Bindings.pkpy_vm_exec(pointer, source);
|
|
}
|
|
|
|
/// Get a global variable of a virtual machine. Return `__repr__` of the result. If the variable is not found, return `nullptr`.
|
|
String? get_global(String name) {
|
|
var ret = _Bindings.pkpy_vm_get_global(pointer, name);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
class REPL {
|
|
late final dynamic pointer;
|
|
|
|
REPL(VM vm) {
|
|
pointer = _Bindings.pkpy_new_repl(vm.pointer);
|
|
}
|
|
|
|
void dispose() {
|
|
_Bindings.pkpy_delete(pointer);
|
|
}
|
|
|
|
/// Input a source line to an interactive console. Return true if need more lines.
|
|
bool input(String line) {
|
|
var ret = _Bindings.pkpy_repl_input(pointer, line);
|
|
return ret;
|
|
}
|
|
}
|