finalized initial c api and built tests for it

This commit is contained in:
Kolten Pearson 2023-04-30 23:45:47 -06:00
parent 8244a8a1a4
commit d4b9d354ed
7 changed files with 660 additions and 98 deletions

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@ -1,41 +0,0 @@
#include "pocketpy_c.h"
#include <stdio.h>
//tests the c bindings for pocketpy
int test_binding(pkpy_vm vm) {
pkpy_push_int(vm, 12);
return 1;
}
int main(int argc, char** argv) {
pkpy_vm vm = pkpy_vm_create(true, true);
pkpy_vm_exec(vm, "print('hello world!')");
pkpy_push_int(vm, 11);
pkpy_set_global(vm, "eleven");
pkpy_push_function(vm, test_binding);
pkpy_set_global(vm, "binding");
pkpy_vm_exec(vm, "print(eleven)");
pkpy_vm_exec(vm, "print(binding())");
pkpy_vm_exec(vm, "def x(x) : return x + 1");
pkpy_get_global(vm, "x");
pkpy_push_int(vm, 1);
pkpy_call(vm, 1);
int r;
pkpy_to_int(vm, -1, &r);
printf("%i\n", r);
pkpy_clear_error(vm, NULL);
pkpy_vm_destroy(vm);
return 0;
}

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@ -3,52 +3,82 @@
using namespace pkpy;
#define SAFEGUARD_OPEN try { \
#define ERRHANDLER_OPEN try { \
#define SAFEGUARD_CLOSE \
} catch(std::exception& e) { \
std::cerr << "ERROR: a std::exception " \
<< "this probably means pocketpy itself has a bug!\n" \
<< e.what() << "\n"; \
exit(2); \
} catch(...) { \
std::cerr << "ERROR: a unknown exception was thrown " \
<< "this probably means pocketpy itself has a bug!\n"; \
exit(2); \
}
#define ERRHANDLER_OPEN SAFEGUARD_OPEN \
try { \
if (vm->c_data.top() == nullptr) \
return false; \
#define ERRHANDLER_CLOSE \
} catch( Exception e ) { \
vm->c_data.clear(); \
vm->c_data.push(VAR(e.summary())); \
vm->c_data.push(VAR(e)); \
vm->c_data.push(NULL); \
return false; \
} \
} catch(...) { \
std::cerr << "ERROR: a non pocketpy exeception was thrown " \
<< "this probably means pocketpy itself has a bug!\n"; \
exit(2); \
SAFEGUARD_CLOSE \
//for now I will unpack a tuple automatically, we may not want to handle
//it this way, not sure
//it is more lua like, but maybe not python like
static void unpack_return(VM* vm, PyObject* ret) {
if (is_type(ret, vm->tp_tuple)) {
Tuple& t = CAST(Tuple&, ret);
for (int i = 0; i < t.size(); i++)
vm->c_data.push(t[i]);
} else if (ret == vm->None) {
//do nothing here
//having to pop the stack after every call that returns none is annoying
//lua does not do this
//
//so for now we will not push none on the stack when it is the sole thing returned
//if this becomes a problem we can change it
//
//you can still check if it returned none by comparing stack size before
//and after if you have too
} else
vm->c_data.push(ret);
}
bool pkpy_clear_error(pkpy_vm vm_handle, const char** message) {
VM* vm = (VM*) vm_handle;
try {
bool pkpy_clear_error(pkpy_vm vm_handle, char** message) {
VM* vm = (VM*) vm_handle;
SAFEGUARD_OPEN
if (vm->c_data.top() != nullptr)
return false;
vm->c_data.pop();
Str wrapped_message = CAST(Str&, vm->c_data.top());
Exception& e = CAST(Exception&, vm->c_data.top());
if (message != nullptr)
*message = wrapped_message.c_str_dup();
*message = e.summary().c_str_dup();
else
std::cerr << "ERROR: " << wrapped_message << "\n";
vm->c_data.pop();
//at this point the stack is clear
std::cerr << "ERROR: " << e.summary() << "\n";
vm->c_data.clear();
vm->callstack.clear();
vm->s_data.clear();
return true;
} catch(...) {
std::cerr << "ERROR: a non pocketpy exeception was thrown "
<< "this probably means pocketpy itself has a bug!\n";
exit(2);
}
SAFEGUARD_CLOSE
}
pkpy_vm pkpy_vm_create(bool use_stdio, bool enable_os) {
pkpy_vm pkpy_new_vm(bool use_stdio, bool enable_os) {
VM* vm = new VM(use_stdio, enable_os);
return (pkpy_vm) vm;
@ -58,17 +88,55 @@ bool pkpy_vm_exec(pkpy_vm vm_handle, const char* source) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
vm->exec(source, "main.py", EXEC_MODE);
CodeObject_ code = vm->compile(source, "<c-bound>", EXEC_MODE);
PyObject* result = vm->_exec(code, vm->_main);
unpack_return(vm, result);
return true;
ERRHANDLER_CLOSE
}
void pkpy_vm_destroy(pkpy_vm vm_handle) {
void pkpy_delete_vm(pkpy_vm vm_handle) {
VM* vm = (VM*) vm_handle;
delete vm;
}
pkpy_repl pkpy_new_repl(pkpy_vm vm_handle) {
VM* vm = (VM*) vm_handle;
REPL* repl = new REPL(vm);
return (pkpy_repl) repl;
}
bool pkpy_repl_input(pkpy_repl repl_handle, const char* line) {
REPL* repl = (REPL*) repl_handle;
return repl->input(line);
}
void pkpy_delete_repl(pkpy_repl repl_handle) {
REPL* repl = (REPL*) repl_handle;
delete repl;
}
static void propagate_if_errored(VM* vm) {
try {
if (vm->c_data.top() != nullptr)
return;
vm->c_data.pop();
Exception& e = CAST(Exception&, vm->c_data.top());
vm->c_data.pop();
throw e;
} catch(Exception& e) {
throw;
} catch(...) {
std::cerr << "ERROR: a non pocketpy exeception was thrown "
<< "this probably means pocketpy itself has a bug!\n";
exit(2);
}
}
PyObject* c_function_wrapper(VM* vm, ArgsView args) {
LuaStyleFuncC f = CAST(NativeFunc&, args[-2])._lua_f;
@ -81,10 +149,20 @@ PyObject* c_function_wrapper(VM* vm, ArgsView args) {
int retc = f(vm);
PyObject* ret = vm->None;
propagate_if_errored(vm);
//TODO handle tuple packing for multiple returns
if (retc > 0)
if (retc == 1)
ret = vm->c_data.top();
else if (retc > 1) {
Tuple t = Tuple(retc);
for (int i = 0; i < retc; i++) {
int stack_index = (vm->c_data.size() - retc) + i;
t[i] = vm->c_data.get(stack_index);
}
ret = VAR(t);
}
vm->c_data.clear();
vm->c_data.restore(stored);
@ -127,6 +205,50 @@ bool pkpy_push_float(pkpy_vm vm_handle, double value) {
ERRHANDLER_CLOSE
}
bool pkpy_push_bool(pkpy_vm vm_handle, bool value) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
vm->c_data.push(VAR(value));
return true;
ERRHANDLER_CLOSE
}
bool pkpy_push_string(pkpy_vm vm_handle, const char* value) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
vm->c_data.push(VAR(value));
return true;
ERRHANDLER_CLOSE
}
bool pkpy_push_stringn(pkpy_vm vm_handle, const char* value, int length) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
Str s = Str(value, length);
vm->c_data.push(VAR(s));
return true;
ERRHANDLER_CLOSE
}
bool pkpy_push_none(pkpy_vm vm_handle) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
vm->c_data.push(vm->None);
return true;
ERRHANDLER_CLOSE
}
bool pkpy_set_global(pkpy_vm vm_handle, const char* name) {
VM* vm = (VM*) vm_handle;
@ -140,12 +262,18 @@ bool pkpy_set_global(pkpy_vm vm_handle, const char* name) {
ERRHANDLER_CLOSE
}
//get global will also get bulitins
bool pkpy_get_global(pkpy_vm vm_handle, const char* name) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
PyObject* o = vm->_main->attr().try_get(name);
if (o == nullptr) {
o = vm->builtins->attr().try_get(name);
if (o == nullptr)
throw Exception("AttributeError", "could not find requested global");
}
vm->c_data.push(o);
@ -153,15 +281,16 @@ bool pkpy_get_global(pkpy_vm vm_handle, const char* name) {
ERRHANDLER_CLOSE
}
static void call_wrapper(VM* vm, int argc, bool method_call) {
bool pkpy_call(pkpy_vm vm_handle, int argc) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
int callable_index = vm->c_data.size() - argc - 1;
PyObject* callable = vm->c_data.get(callable_index);
vm->s_data.push(callable);
if (method_call)
vm->s_data.push(vm->c_data.get(callable_index - 1));
else
vm->s_data.push(PY_NULL);
for (int i = 0; i < argc; i++)
@ -169,30 +298,41 @@ static void call_wrapper(VM* vm, int argc, bool method_call) {
PyObject* o = vm->vectorcall(argc);
vm->c_data.shrink(argc + 1 + (int) method_call);
vm->c_data.shrink(argc + 1);
//TODO unpack tuple?
vm->c_data.push(o);
}
bool pkpy_call(pkpy_vm vm_handle, int argc) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
call_wrapper(vm, argc, false);
unpack_return(vm, o);
return true;
ERRHANDLER_CLOSE
}
bool pkpy_call_method(pkpy_vm vm_handle, int argc) {
bool pkpy_call_method(pkpy_vm vm_handle, const char* name, int argc) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
call_wrapper(vm, argc, true);
int self_index = vm->c_data.size() - argc - 1;
PyObject* self = vm->c_data.get(self_index);
PyObject* callable = vm->get_unbound_method(self, name, &self);
vm->s_data.push(callable);
vm->s_data.push(self);
for (int i = 0; i < argc; i++)
vm->s_data.push(vm->c_data.get(self_index + i + 1));
PyObject* o = vm->vectorcall(argc);
vm->c_data.shrink(argc + 1);
unpack_return(vm, o);
return true;
ERRHANDLER_CLOSE
}
static int lua_to_cstack_index(int index, int size) {
if (index < 0)
index = size + index;
@ -212,3 +352,99 @@ bool pkpy_to_int(pkpy_vm vm_handle, int index, int* ret) {
return true;
ERRHANDLER_CLOSE
}
bool pkpy_to_float(pkpy_vm vm_handle, int index, double* ret) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
index = lua_to_cstack_index(index, vm->c_data.size());
PyObject* o = vm->c_data.get(index);
if (ret != nullptr)
*ret = py_cast<double>(vm, o);
return true;
ERRHANDLER_CLOSE
}
bool pkpy_to_bool(pkpy_vm vm_handle, int index, bool* ret) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
index = lua_to_cstack_index(index, vm->c_data.size());
PyObject* o = vm->c_data.get(index);
if (ret != nullptr)
*ret = py_cast<bool>(vm, o);
return true;
ERRHANDLER_CLOSE
}
bool pkpy_to_string(pkpy_vm vm_handle, int index, char** ret) {
VM* vm = (VM*) vm_handle;
ERRHANDLER_OPEN
index = lua_to_cstack_index(index, vm->c_data.size());
PyObject* o = vm->c_data.get(index);
if (ret != nullptr) {
Str& s = CAST(Str&, o);
*ret = s.c_str_dup();
}
return true;
ERRHANDLER_CLOSE
}
bool pkpy_is_int(pkpy_vm vm_handle, int index) {
VM* vm = (VM*) vm_handle;
index = lua_to_cstack_index(index, vm->c_data.size());
PyObject* o = vm->c_data.get(index);
return is_type(o, vm->tp_int);
}
bool pkpy_is_float(pkpy_vm vm_handle, int index) {
VM* vm = (VM*) vm_handle;
index = lua_to_cstack_index(index, vm->c_data.size());
PyObject* o = vm->c_data.get(index);
return is_type(o, vm->tp_float);
}
bool pkpy_is_bool(pkpy_vm vm_handle, int index) {
VM* vm = (VM*) vm_handle;
index = lua_to_cstack_index(index, vm->c_data.size());
PyObject* o = vm->c_data.get(index);
return is_type(o, vm->tp_bool);
}
bool pkpy_is_string(pkpy_vm vm_handle, int index) {
VM* vm = (VM*) vm_handle;
index = lua_to_cstack_index(index, vm->c_data.size());
PyObject* o = vm->c_data.get(index);
return is_type(o, vm->tp_str);
}
bool pkpy_is_none(pkpy_vm vm_handle, int index) {
VM* vm = (VM*) vm_handle;
index = lua_to_cstack_index(index, vm->c_data.size());
PyObject* o = vm->c_data.get(index);
return o == vm->None;
}
bool pkpy_check_stack(pkpy_vm vm_handle, int free) {
VM* vm = (VM*) vm_handle;
return free <= vm->c_data.remaining();
}
int pkpy_stack_size(pkpy_vm vm_handle) {
VM* vm = (VM*) vm_handle;
return vm->c_data.size();
}

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@ -9,22 +9,30 @@ extern "C" {
#include <stdint.h>
typedef struct pkpy_vm_handle* pkpy_vm;
typedef struct pkpy_repl_hande* pkpy_repl;
//we mostly follow the lua api for these bindings
//the key difference being most methods return a bool, true if it succeeded
//false if it did not
//we we take a lot of inspiration from the lua api for these bindings
//the key difference being most methods return a bool,
//true if it succeeded false if it did not
//if a method returns false call this next method to check the error and clear it
//if this method returns false it means that no error was set, and no action is taken
//if it returns true it means there was an error and it was cleared, it will provide a string summary of the error in the message parameter (if it is not NULL)
//if a method returns false call the pkpy_clear_error method to check the error and clear it
//if pkpy_clear_error returns false it means that no error was set, and it takes no action
//if pkpy_clear_error returns true it means there was an error and it was cleared,
//it will provide a string summary of the error in the message parameter (if it is not NULL)
//NOTE : you need to free the message that is passed back after you are done using it
//or else pass in null as message, and it will just print the message to stderr
bool pkpy_clear_error(pkpy_vm, const char** message);
bool pkpy_clear_error(pkpy_vm, char** message);
pkpy_vm pkpy_vm_create(bool use_stdio, bool enable_os);
bool pkpy_vm_exec(pkpy_vm vm_handle, const char* source);
void pkpy_vm_destroy(pkpy_vm vm);
pkpy_vm pkpy_new_vm(bool use_stdio, bool enable_os);
bool pkpy_vm_exec(pkpy_vm, const char* source);
void pkpy_delete_vm(pkpy_vm);
pkpy_repl pkpy_new_repl(pkpy_vm);
//the repl does its own error management, so this method doesn't follow the ame
//error semantics, it is just a thin wrapper around the REPL classes input method
bool pkpy_repl_input(pkpy_repl, const char* line);
void pkpy_delete_repl(pkpy_repl);
typedef int (*pkpy_function)(pkpy_vm);
@ -32,29 +40,52 @@ typedef int (*pkpy_function)(pkpy_vm);
bool pkpy_push_function(pkpy_vm, pkpy_function);
bool pkpy_push_int(pkpy_vm, int);
bool pkpy_push_float(pkpy_vm, double);
bool pkpy_push_bool(pkpy_vm, bool);
bool pkpy_push_string(pkpy_vm, const char*);
bool pkpy_push_stringn(pkpy_vm, const char*, int length);
bool pkpy_push_none(pkpy_vm);
bool pkpy_set_global(pkpy_vm, const char* name);
bool pkpy_get_global(pkpy_vm vm_handle, const char* name);
bool pkpy_get_global(pkpy_vm, const char* name);
//first push callable you want to call
//then push the arguments to send
//argc is the number of arguments that was pushed (not counting the callable)
bool pkpy_call(pkpy_vm vm_handle, int argc);
bool pkpy_call(pkpy_vm, int argc);
//first push the object the method belongs to (self)
//then push the callable you want to call
//then push the the argments
//argc is the number of arguments that was pushed (not counting the callable or self)
bool pkpy_call_method(pkpy_vm vm_handle, int argc);
//name is the name of the method to call on the object
bool pkpy_call_method(pkpy_vm, const char* name, int argc);
//we will break with the lua api here
//lua uses 1 as the index to the first pushed element for all of these functions
//but we will start counting at zero to match python
//we will allow negative numbers to count backwards from the top
bool pkpy_to_int(pkpy_vm vm_handle, int index, int* ret);
bool pkpy_to_int(pkpy_vm, int index, int* ret);
bool pkpy_to_float(pkpy_vm, int index, double* ret);
bool pkpy_to_bool(pkpy_vm, int index, bool* ret);
//you have to free ret after you are done using it
bool pkpy_to_string(pkpy_vm, int index, char** ret);
//these do not follow the same error semantics as above, their return values
//just say whether the check succeeded or not, or else return the value asked for
bool pkpy_is_int(pkpy_vm, int index);
bool pkpy_is_float(pkpy_vm, int index);
bool pkpy_is_bool(pkpy_vm, int index);
bool pkpy_is_string(pkpy_vm, int index);
bool pkpy_is_none(pkpy_vm, int index);
//will return true if at least free empty slots remain on the stack
bool pkpy_check_stack(pkpy_vm, int free);
//returns the number of elements on the stack
int pkpy_stack_size(pkpy_vm);
#ifdef __cplusplus
}
#endif

262
c_bindings/test.c Normal file
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@ -0,0 +1,262 @@
#include "pocketpy_c.h"
#include <stdio.h>
#include <stdlib.h>
//tests the c bindings for pocketpy
void check_impl(pkpy_vm vm, bool result, int lineno) {
if (!result) {
printf("ERROR: failed where it should have succeed at line %i\n", lineno);
char* message;
if (!pkpy_clear_error(vm, &message)) {
printf("clear error reported everything was fine\n");
exit(1);
}
printf("%s\n", message);
free(message);
exit(1);
}
}
void fail_impl(pkpy_vm vm, bool result, int lineno) {
if (result) {
printf("ERROR: succeeded where it should have failed line %i\n", lineno);
exit(1);
} else {
char* message;
if (pkpy_clear_error(vm, &message)) {
printf("actually errored!\n");
free(message);
exit(1);
}
}
}
void error_impl(pkpy_vm vm, bool result, int lineno) {
if (result) {
printf("ERROR: succeeded where it should have failed line %i\n", lineno);
exit(1);
} else {
char* message;
if (!pkpy_clear_error(vm, &message))
printf("clear error reported everything was fine\n");
else {
printf("successfully errored with this message: \n");
printf("%s\n", message);
free(message);
}
}
}
#define check(r) check_impl(vm, (r), __LINE__)
#define fail(r) fail_impl(vm, (r), __LINE__)
#define error(r) error_impl(vm, (r), __LINE__)
int test_binding(pkpy_vm vm) {
pkpy_push_int(vm, 12);
return 1;
}
int test_multiple_return(pkpy_vm vm) {
pkpy_push_int(vm, 12);
pkpy_push_int(vm, 13);
return 2;
}
int test_return_none(pkpy_vm vm) {
return 0;
}
int test_error_propagate(pkpy_vm vm) {
pkpy_get_global(vm, "does not exist");
return 1;
}
pkpy_vm vm;
void cleanup(void) {
pkpy_delete_vm(vm);
}
int main(int argc, char** argv) {
vm = pkpy_new_vm(true, true);
atexit(cleanup);
//test exec
check(pkpy_vm_exec(vm, "print('hello world!')"));
error(pkpy_get_global(vm, "nonexistatn"));
printf("\ntesting int methods\n");
int r_int;
check(pkpy_push_int(vm, 11));
check(pkpy_set_global(vm, "eleven"));
check(pkpy_vm_exec(vm, "print(eleven)"));
check(pkpy_get_global(vm, "eleven"));
check(pkpy_is_int(vm, -1));
check(pkpy_to_int(vm, -1, &r_int));
printf("%i\n", r_int);
fail(pkpy_is_float(vm, -1));
fail(pkpy_is_bool(vm, -1));
fail(pkpy_is_string(vm, -1));
fail(pkpy_is_none(vm, -1));
printf("\ntesting float methods\n");
double r_float;
check(pkpy_push_float(vm, 11.11));
check(pkpy_set_global(vm, "elevenf"));
check(pkpy_vm_exec(vm, "print(elevenf)"));
check(pkpy_get_global(vm, "elevenf"));
check(pkpy_is_float(vm, -1));
check(pkpy_to_float(vm, -1, &r_float));
printf("%f\n", r_float);
fail(pkpy_is_int(vm, -1));
fail(pkpy_is_bool(vm, -1));
fail(pkpy_is_string(vm, -1));
fail(pkpy_is_none(vm, -1));
printf("\ntesting bool methods\n");
bool r_bool;
check(pkpy_push_bool(vm, false));
check(pkpy_set_global(vm, "false_test"));
check(pkpy_vm_exec(vm, "print(false_test)"));
check(pkpy_get_global(vm, "false_test"));
check(pkpy_is_bool(vm, -1));
check(pkpy_to_bool(vm, -1, &r_bool));
printf("%i\n", r_bool);
fail(pkpy_is_int(vm, -1));
fail(pkpy_is_float(vm, -1));
fail(pkpy_is_string(vm, -1));
fail(pkpy_is_none(vm, -1));
printf("\ntesting string methods\n");
char* r_string;
check(pkpy_push_string(vm, "hello!"));
check(pkpy_set_global(vm, "hello1"));
check(pkpy_vm_exec(vm, "print(hello1)"));
check(pkpy_push_stringn(vm, "hello!", 5));
check(pkpy_is_string(vm, -1));
check(pkpy_to_string(vm, -1, &r_string));
printf("%s\n", r_string);
fail(pkpy_is_int(vm, -1));
fail(pkpy_is_float(vm, -1));
fail(pkpy_is_bool(vm, -1));
fail(pkpy_is_none(vm, -1));
free(r_string);
printf("\ntesting None methods\n");
check(pkpy_push_none(vm));
check(pkpy_set_global(vm, "none"));
check(pkpy_vm_exec(vm, "print(none)"));
check(pkpy_get_global(vm, "none"));
check(pkpy_is_none(vm, -1));
fail(pkpy_is_int(vm, -1));
fail(pkpy_is_float(vm, -1));
fail(pkpy_is_bool(vm, -1));
fail(pkpy_is_string(vm, -1));
printf("\ntesting sizing and indexing\n");
int stack_size = pkpy_stack_size(vm);
printf("stack size %i\n", stack_size);
check(pkpy_check_stack(vm, 10));
check(pkpy_check_stack(vm, 251));
fail(pkpy_check_stack(vm, 252));
check(pkpy_is_int(vm, 0));
check(pkpy_is_float(vm, 1));
check(pkpy_is_bool(vm, 2));
check(pkpy_is_string(vm, 3));
check(pkpy_is_none(vm, 4));
check(pkpy_is_int(vm, -5));
check(pkpy_is_float(vm, -4));
check(pkpy_is_bool(vm, -3));
check(pkpy_is_string(vm, -2));
check(pkpy_is_none(vm, -1));
printf("\ntesting error catching\n");
error(pkpy_vm_exec(vm, "let's make sure syntax errors get caught"));
check(pkpy_stack_size(vm) == 0); //stack should be cleared after error is resolved
printf("\ntesting calls\n");
check(pkpy_vm_exec(vm, "def x(x, y) : return x - y"));
check(pkpy_vm_exec(vm, "def vararg_x(*x) : return sum(x)"));
check(pkpy_vm_exec(vm, "def keyword_x(x=1, y=1) : return x+y"));
check(pkpy_vm_exec(vm, "def retmany_x() : return 1, 2, 3"));
check(pkpy_get_global(vm, "x"));
check(pkpy_push_int(vm, 2));
check(pkpy_push_int(vm, 3));
check(pkpy_call(vm, 2));
check(pkpy_to_int(vm, -1, &r_int));
printf("x : %i\n", r_int);
check(pkpy_get_global(vm, "vararg_x"));
check(pkpy_push_int(vm, 1));
check(pkpy_push_int(vm, 2));
check(pkpy_push_int(vm, 3));
check(pkpy_push_int(vm, 4));
check(pkpy_push_int(vm, 5));
check(pkpy_push_int(vm, 6));
check(pkpy_call(vm, 6));
check(pkpy_to_int(vm, -1, &r_int));
printf("vararg_x : %i\n", r_int);
check(pkpy_get_global(vm, "keyword_x"));
check(pkpy_push_int(vm, 3));
check(pkpy_call(vm, 1));
check(pkpy_to_int(vm, -1, &r_int));
printf("keyword_x : %i\n", r_int);
check(pkpy_get_global(vm, "keyword_x"));
check(pkpy_call(vm, 0));
check(pkpy_to_int(vm, -1, &r_int));
printf("keyword_x : %i\n", r_int);
check(pkpy_stack_size(vm) == 4);
check(pkpy_get_global(vm, "retmany_x"));
check(pkpy_call(vm, 0));
check(pkpy_stack_size(vm) == 7);
check(pkpy_to_int(vm, -3, &r_int));
printf("retmany_x : %i\n", r_int);
check(pkpy_to_int(vm, -2, &r_int));
printf("retmany_x : %i\n", r_int);
check(pkpy_to_int(vm, -1, &r_int));
printf("retmany_x : %i\n", r_int);
check(pkpy_get_global(vm, "x"));
error(pkpy_call(vm, 0));
check(pkpy_vm_exec(vm, "l = []"));
check(pkpy_get_global(vm, "l"));
check(pkpy_push_string(vm, "hello"));
check(pkpy_call_method(vm, "append", 1));
check(pkpy_vm_exec(vm, "print(l)"));
printf("\ntesting pushing functions\n");
check(pkpy_push_function(vm, test_binding));
check(pkpy_set_global(vm, "test_binding"));
check(pkpy_vm_exec(vm, "print(test_binding())"));
check(pkpy_push_function(vm, test_multiple_return));
check(pkpy_set_global(vm, "test_multiple_return"));
check(pkpy_vm_exec(vm, "test_multiple_return()"));
check(pkpy_stack_size(vm) == 2);
check(pkpy_push_function(vm, test_error_propagate));
check(pkpy_set_global(vm, "test_error_propagate"));
error(pkpy_vm_exec(vm, "test_error_propagate()"));
check(pkpy_get_global(vm, "test_multiple_return"));
check(pkpy_call(vm, 0));
check(pkpy_stack_size(vm) == 2);
return 0;
}

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@ -0,0 +1,49 @@
hello world!
successfully errored with this message:
Traceback (most recent call last):
AttributeError: could not find requested global
testing int methods
11
11
testing float methods
11.11
11.110000
testing bool methods
False
0
testing string methods
hello!
hello
testing None methods
None
testing sizing and indexing
stack size 5
testing error catching
successfully errored with this message:
File "<c-bound>", line 1
let's make sure syntax errors get caught
SyntaxError: EOL while scanning string literal
testing calls
x : -1
vararg_x : 21
keyword_x : 4
keyword_x : 2
retmany_x : 1
retmany_x : 2
retmany_x : 3
successfully errored with this message:
TypeError: expected 2 positional arguments, but got 0 (x)
['hello']
testing pushing functions
12
ERROR: failed where it should have succeed at line 251
clear error reported everything was fine

24
run_c_binding_test.sh Normal file
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@ -0,0 +1,24 @@
python3 preprocess.py
if [ ! -f "pocketpy_c.o" ]
then
echo "compiling c++ lib"
clang++ -c -o pocketpy_c.o c_bindings/pocketpy_c.cpp -Wfatal-errors --std=c++17 -O2 -Wall -Wno-sign-compare -Wno-unused-variable -fno-rtti -stdlib=libc++ -I src/ -fsanitize=address -g
else
echo "DETECTED PREVIOUS COMPILATION USING IT"
fi
echo "compiling c executable"
clang -c -o test.o c_bindings/test.c -Wfatal-errors -O2 -Wall -Wno-sign-compare -Wno-unused-variable -I src/ -fsanitize=address -g
echo "linking"
clang++ -o c_binding_test test.o pocketpy_c.o -stdlib=libc++ -fsanitize=address -g
echo "running, no weird output should show up"
./c_binding_test > binding_test_scratch
echo "checking results (they should be identical)"
diff -s binding_test_scratch c_bindings/test_answers.txt
echo "cleaning up"
rm pocketpy_c.o
rm test.o
rm binding_test_scratch

View File

@ -117,6 +117,7 @@ struct CVirtualStack {
PyObject** begin() { return _begin + offset; }
PyObject** end() { return _sp; }
void clear() { _sp = _begin + offset;}
int remaining() { return MAX_SIZE - (_sp - _begin); }
size_t store() { size_t ret = offset; offset = _sp - _begin; return ret; }
void restore(size_t stored) { offset = stored; }