mirror of
https://github.com/pocketpy/pocketpy
synced 2025-10-20 03:20:18 +00:00
225 lines
5.9 KiB
C
225 lines
5.9 KiB
C
#include "pocketpy/objects/codeobject.h"
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#include "pocketpy/objects/sourcedata.h"
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#include "pocketpy/pocketpy.h"
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#include "pocketpy/common/utils.h"
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#include "pocketpy/common/sstream.h"
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#include "pocketpy/objects/object.h"
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#include "pocketpy/interpreter/vm.h"
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#include "pocketpy/compiler/compiler.h"
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#include <stdint.h>
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VM* pk_current_vm;
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py_GlobalRef py_True;
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py_GlobalRef py_False;
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py_GlobalRef py_None;
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py_GlobalRef py_NIL;
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static VM pk_default_vm;
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static VM* pk_all_vm[16];
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void py_initialize() {
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MemoryPools__initialize();
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py_Name__initialize();
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pk_current_vm = pk_all_vm[0] = &pk_default_vm;
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// initialize some convenient references
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static py_TValue _True, _False, _None, _NIL;
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py_newbool(&_True, true);
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py_newbool(&_False, false);
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py_newnone(&_None);
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py_newnil(&_NIL);
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py_True = &_True;
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py_False = &_False;
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py_None = &_None;
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py_NIL = &_NIL;
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VM__ctor(&pk_default_vm);
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}
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void py_finalize() {
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for(int i = 1; i < 16; i++) {
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VM* vm = pk_all_vm[i];
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if(vm) {
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VM__dtor(vm);
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free(vm);
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}
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}
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VM__dtor(&pk_default_vm);
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pk_current_vm = NULL;
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py_Name__finalize();
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MemoryPools__finalize();
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}
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void py_switchvm(int index) {
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if(index < 0 || index >= 16) c11__abort("invalid vm index");
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if(!pk_all_vm[index]) {
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pk_all_vm[index] = malloc(sizeof(VM));
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VM__ctor(pk_all_vm[index]);
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}
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pk_current_vm = pk_all_vm[index];
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}
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int py_currentvm() {
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for(int i = 0; i < 16; i++) {
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if(pk_all_vm[i] == pk_current_vm) return i;
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}
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return -1;
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}
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const char* pk_opname(Opcode op) {
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const static char* OP_NAMES[] = {
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#define OPCODE(name) #name,
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#include "pocketpy/xmacros/opcodes.h"
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#undef OPCODE
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};
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return OP_NAMES[op];
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}
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bool py_exec(const char* source, const char* filename, enum py_CompileMode mode, py_Ref module) {
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VM* vm = pk_current_vm;
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CodeObject co;
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SourceData_ src = SourceData__rcnew(source, filename, mode, false);
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Error* err = pk_compile(src, &co);
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if(err) {
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py_exception(tp_SyntaxError, err->msg);
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py_BaseException__stpush(&vm->curr_exception, src, err->lineno, NULL);
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PK_DECREF(src);
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free(err);
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return false;
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}
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if(!module) module = &vm->main;
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Frame* frame = Frame__new(&co, module, false, vm->stack.sp, vm->stack.sp);
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VM__push_frame(vm, frame);
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FrameResult res = VM__run_top_frame(vm);
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CodeObject__dtor(&co);
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PK_DECREF(src);
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if(res == RES_ERROR) return false;
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if(res == RES_RETURN) return true;
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c11__unreachedable();
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}
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bool py_call(py_Ref f, int argc, py_Ref argv) {
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if(f->type == tp_nativefunc) {
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return f->_cfunc(argc, argv);
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} else {
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py_push(f);
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py_pushnil();
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for(int i = 0; i < argc; i++)
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py_push(py_offset(argv, i));
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return py_vectorcall(argc, 0);
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}
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}
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bool py_vectorcall(uint16_t argc, uint16_t kwargc) {
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VM* vm = pk_current_vm;
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return VM__vectorcall(vm, argc, kwargc, false) != RES_ERROR;
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}
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py_Ref py_retval() { return &pk_current_vm->last_retval; }
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bool py_pushmethod(py_Name name) {
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bool ok = pk_loadmethod(py_peek(-1), name);
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if(ok) pk_current_vm->stack.sp++;
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return ok;
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}
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bool pk_loadmethod(py_StackRef self, py_Name name) {
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// NOTE: `out` and `out_self` may overlap with `self`
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py_Type type;
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// handle super() proxy
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if(py_istype(self, tp_super)) {
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type = *(py_Type*)py_touserdata(self);
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*self = *py_getslot(self, 0);
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} else {
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type = self->type;
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}
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py_Ref cls_var = py_tpfindname(type, name);
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if(cls_var != NULL) {
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switch(cls_var->type) {
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case tp_function:
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case tp_nativefunc: {
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py_TValue self_bak = *self;
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// `out` may overlap with `self`. If we assign `out`, `self` may be corrupted.
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self[0] = *cls_var;
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self[1] = self_bak;
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break;
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}
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case tp_staticmethod:
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self[0] = *py_getslot(cls_var, 0);
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self[1] = *py_NIL;
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break;
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case tp_classmethod:
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self[0] = *py_getslot(cls_var, 0);
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self[1] = c11__getitem(py_TypeInfo, &pk_current_vm->types, type).self;
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break;
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default: c11__unreachedable();
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}
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return true;
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}
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return false;
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}
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py_Ref py_tpfindmagic(py_Type t, py_Name name) {
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assert(py_ismagicname(name));
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py_TypeInfo* types = (py_TypeInfo*)pk_current_vm->types.data;
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do {
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py_Ref f = &types[t].magic[name];
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if(!py_isnil(f)) return f;
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t = types[t].base;
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} while(t);
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return NULL;
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}
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py_Ref py_tpfindname(py_Type t, py_Name name) {
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py_TypeInfo* types = (py_TypeInfo*)pk_current_vm->types.data;
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do {
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py_Ref res = py_getdict(&types[t].self, name);
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if(res) return res;
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t = types[t].base;
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} while(t);
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return NULL;
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}
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py_Ref py_tpmagic(py_Type type, py_Name name) {
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assert(py_ismagicname(name));
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VM* vm = pk_current_vm;
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return &c11__at(py_TypeInfo, &vm->types, type)->magic[name];
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}
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py_Ref py_tpobject(py_Type type) {
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assert(type);
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VM* vm = pk_current_vm;
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return &c11__at(py_TypeInfo, &vm->types, type)->self;
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}
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const char* py_tpname(py_Type type) {
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if(!type) return "nil";
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VM* vm = pk_current_vm;
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py_Name name = c11__at(py_TypeInfo, &vm->types, type)->name;
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return py_name2str(name);
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}
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bool py_tpcall(py_Type type, int argc, py_Ref argv) {
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return py_call(py_tpobject(type), argc, argv);
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}
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bool pk_callmagic(py_Name name, int argc, py_Ref argv) {
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assert(argc >= 1);
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assert(py_ismagicname(name));
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py_Ref tmp = py_tpfindmagic(argv->type, name);
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if(!tmp) return AttributeError(argv, name);
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return py_call(tmp, argc, argv);
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}
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bool StopIteration() {
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VM* vm = pk_current_vm;
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assert(!vm->is_stopiteration); // flag is already set
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vm->is_stopiteration = true;
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return false;
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} |